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	<title>Mukerji.co.uk &#187; Neil Mukerji</title>
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	<link>http://mukerji.co.uk</link>
	<description>life in the angry lane</description>
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		<title>Wyedean rally 2012</title>
		<link>http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/</link>
		<comments>http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/#comments</comments>
		<pubDate>Sun, 12 Feb 2012 12:51:32 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[Motorsport]]></category>
		<category><![CDATA[Subaru Impreza]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2720</guid>
		<description><![CDATA[Yesterday I made my annual trip to the Welsh border to see Alex and spectate at the Wyedean rally. I think this is the sixth consecutive year we&#8217;ve been, and the first time I&#8217;ve not taken a BMW. I took the Impreza, and as you can see, we had another snowy event. I must now [...]]]></description>
			<content:encoded><![CDATA[<p>Yesterday I made my annual trip to the Welsh border to see Alex and spectate at the <a href="http://www.wyedeanrally.com/" target="_blank">Wyedean rally</a>. I think this is the sixth consecutive year we&#8217;ve been, and the first time I&#8217;ve not taken a BMW.</p>
<p><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/img_1576/" rel="attachment wp-att-2721"><img class="alignnone size-large wp-image-2721" title="IMG_1576" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/02/IMG_1576-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>I took the Impreza, and as you can see, we had another snowy event. I must now wax lyrical about that car&#8217;s practicality. We arrived in the snowy car park to find it full, so we simply made the car park bigger by parking on a frozen, muddy bit of bog-land on the edge. When we needed to leave I popped the car in reverse and it happily chomped back onto the then ice-rink-like car park, and we naffed off, leaving others in two wheel drive vehicles spinning their wheels and generally rueing the day they failed to acknowledge the glory of proper all wheel drive, no matter how unsubtle it may appear.</p>
<p>So, back to the rally. With well over 200 cars running at (we guess) 60 second intervals we figured two special stages should be about right for the day. We chose to spectate on Serridge 1 &amp; 2, basically because we&#8217;re a bit lazy like that. As ever, we hunted down corners that were most likely to provoke mistakes. As it turned out we can&#8217;t have done such a good job as previous years, as we didn&#8217;t so much as need to push anyone, but we certainly saw some action.</p>
<p><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/dsc_1416/" rel="attachment wp-att-2722"><img class="alignnone size-large wp-image-2722" title="DSC_1416" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/02/DSC_1416-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>Now here&#8217;s another testament to four wheel drive and good tyre choice. After a 360° spin, this Evo rolls backwards off the track. Both rear wheels are suspended over that ditch; the front wheels are on sheet ice. Did it need pushing? No. They just boiled it up, and the Evo dragged itself forward on its belly panels to the point where the rear wheels could get a good purchase on the edge of the ditch, whereupon it leapt out, ripped up the ice and shot off back on track.</p>
<p>Even so, my real heroes are of course those who manage all this, quickly, with just rear wheel drive. Legends, one and all.</p>
<p><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/dsc_1532/" rel="attachment wp-att-2723"><img class="alignnone size-large wp-image-2723" title="DSC_1532" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/02/DSC_1532-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/dsc_1593/" rel="attachment wp-att-2724"><img class="alignnone size-large wp-image-2724" title="DSC_1593" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/02/DSC_1593-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>In the afternoon we carefully located a <em>really</em> slippery 90° corner. It didn&#8217;t disappoint!</p>
<p><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/dsc_1702/" rel="attachment wp-att-2725"><img class="alignnone size-large wp-image-2725" title="DSC_1702" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/02/DSC_1702-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/dsc_1656/" rel="attachment wp-att-2726"><img class="alignnone size-large wp-image-2726" title="DSC_1656" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/02/DSC_1656-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>I&#8217;m annoyed that &#8211; yet again &#8211; I took too many stills and not enough video. The juniors and classics run though the course first, but then the open competition come through. The top seeds &#8211; cars potentially worth hundreds of thousands of pounds &#8211; come storming through the forest like monsters. It starts with popping and cracking exhausts in the distance, escalating rapidly to a full roar accompanied by dump valves hissing, straight-cut gears whining, tyres scrabbling, hot brakes, flaming exhausts and general rage. Car 21, a Lancer Evo IX, sounded absolutely terrifying and only after it had passed it occurred to me to take some video. Sadly by then the real animals had been and gone, but hopefully this selection gives a good idea of the atmosphere.</p>
<p>Here&#8217;s a wonderful bit of RWD from a MkII Escort. Note I&#8217;m silent during filming, but one of the other spectators was clearly getting a bit nervous!</p>
<p><span style="text-align:center; display: block;"><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/"><img src="http://img.youtube.com/vi/kkPKx8i2RLw/2.jpg" alt="" /></a></span></p>
<p>And now an Impreza turbo demonstrating superior traction up the hill, but perhaps a little too much pace into the corner.</p>
<p><span style="text-align:center; display: block;"><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/"><img src="http://img.youtube.com/vi/MLPA0ypzInc/2.jpg" alt="" /></a></span></p>
<p>An Impreza digging itself out of a small ditch:</p>
<p><span style="text-align:center; display: block;"><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/"><img src="http://img.youtube.com/vi/XIknz7vRt6I/2.jpg" alt="" /></a></span></p>
<p>And finally, taken from slightly further round the corner, a general demonstration of the ice-rink conditions competitors had to handle:</p>
<p><span style="text-align:center; display: block;"><a href="http://mukerji.co.uk/2012/02/12/wyedean-rally-2012/"><img src="http://img.youtube.com/vi/rU7WHFrKDU0/2.jpg" alt="" /></a></span></p>
<p>Overall a very interesting (and cold!) day out. 45 miles of special stage in the forest on mud, snow and ice. I was fascinated to learn that while the winner was a WRC Focus, and second place went to a Lancer Evo, third place was awarded to a 1.4l Vauxhall Nova, proving that the conditions really were a playing field leveller.</p>
<p>All my <a href="http://cloud.mukerji.co.uk/images/2012/02-11-rally/index.html" target="_blank">stills from the day can be found here</a> &#8211; note that&#8217;s a 40MB page though. <img src='http://mukerji.co.uk/wp-includes/images/smilies/icon_wink.gif' alt=';)' class='wp-smiley' /> </p>
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		<title>2007 Subaru Impreza GB270 Wagon</title>
		<link>http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/</link>
		<comments>http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/#comments</comments>
		<pubDate>Sat, 07 Jan 2012 18:37:36 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[Subaru Impreza]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2705</guid>
		<description><![CDATA[Back in July, with the impending arrival of my daughter, I sold the M5. It really wasn&#8217;t getting used much (less than 4,000 miles a year), and without isofix points for child seats or room for Snoop that situation was unlikely to improve. The plan was to cut down to a single car &#8211; the [...]]]></description>
			<content:encoded><![CDATA[<p>Back in July, with the impending arrival of my daughter, I sold <a title="Farewell M5" href="http://mukerji.co.uk/2011/07/16/farewell-m5/" target="_blank">the M5</a>. It really wasn&#8217;t getting used much (less than 4,000 miles a year), and without isofix points for child seats or room for <a title="My name is Snoop" href="http://mukerji.co.uk/2009/09/27/my-name-is-snoop/" target="_blank">Snoop</a> that situation was unlikely to improve. The plan was to cut down to a single car &#8211; the 330d does every we need, after all.</p>
<p>Except it doesn&#8217;t. It has two major failings.</p>
<p>First of all, it can&#8217;t be used in two different places at once. This limits our progress through various chores at weekends, and means that if one of us goes out in the car, the other is marooned at the house. Also, were it to break down, we would be well and truly stuffed.</p>
<p>The other problem I&#8217;ve got with the 330d is that, capable as it is, it&#8217;s a bit dull. I really like cars, and I like them to be interesting &#8211; a bit special. There&#8217;s nothing special about the 330d in the way that my previous 5 &#8216;M&#8217; cars had a certain following and inherent entertainment value.</p>
<p>So a second car was required, and it had to be capable of both entertaining me and carting the family around. E61 M5s were out of budget, and I just couldn&#8217;t get excited about an Audi. I&#8217;ve had an itch for an Impreza for about a decade, and when I found out about the run of just 100 limited edition GB270 wagons produced in 2007, I got more than a bit interested, and bought one. I&#8217;m its third owner, and it arrived with just 29,500 miles on the clock.</p>
<p><a href="http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/dsc_1367/" rel="attachment wp-att-2708"><img class="alignnone size-large wp-image-2708" title="DSC_1367" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/01/DSC_1367-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>Yeah, so it&#8217;s a bit brash. Twin spoilers and a massive zorst on display there. The GB270 has the Prodrive Performance Pack giving it 270PS and 420Nm, along with different suspension and a bunch more bling. The power figure isn&#8217;t particularly impressive when stacked up against the M5&#8242;s 400hp, but at only 1,425kg and with four wheel drive this is faster to 60mph in just 4.9s.</p>
<p><a href="http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/dsc_1365/" rel="attachment wp-att-2706"><img class="alignnone size-large wp-image-2706" title="DSC_1365" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/01/DSC_1365-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>From the side the lack of subtlety in the colour scheme becomes apparent, as does the frankly ridiculous bonnet scoop.</p>
<p><a href="http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/dsc_1366/" rel="attachment wp-att-2707"><img class="alignnone size-large wp-image-2707" title="DSC_1366" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/01/DSC_1366-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/dsc_1368/" rel="attachment wp-att-2709"><img class="alignnone size-large wp-image-2709" title="DSC_1368" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/01/DSC_1368-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>Inside it is all a bit flimsy compared with a BMW, but it is all so light. The bucket seats don&#8217;t offer much adjustment but are certainly very comfortable and supportive. The car came with a standard CD and cassette (yes, cassette, in a 2007 car&#8230;) head unit. Fortunately Ben Smith still had his touch-screen head unit from his 2004 Impreza, so today he kindly both donated and fitted it. Thanks Ben!</p>
<p><a href="http://mukerji.co.uk/2012/01/07/2007-subaru-impreza-gb270-wagon/dsc_1369/" rel="attachment wp-att-2710"><img class="alignnone size-large wp-image-2710" title="DSC_1369" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2012/01/DSC_1369-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>This car is an absolute hoot to drive. It makes a fantastic sound, delivers power in such a playful yet competent way, and grips and grips and grips. It won&#8217;t oversteer, which in many ways is probably for the best! It&#8217;s certainly a welcome addition to the driveway.</p>
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		<title>iPad ownership</title>
		<link>http://mukerji.co.uk/2011/12/30/ipad-ownership/</link>
		<comments>http://mukerji.co.uk/2011/12/30/ipad-ownership/#comments</comments>
		<pubDate>Fri, 30 Dec 2011 06:40:04 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[Information Technology]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2685</guid>
		<description><![CDATA[When Apple&#8217;s iPad was first launched I was openly skeptical about it. What was the point of this device? It wasn&#8217;t as mobile as my phone, or as powerful as my trusty laptop. A satirical video spoof of a man out jogging with an iPad strapped to his arm, and of course all the gaffes [...]]]></description>
			<content:encoded><![CDATA[<p>When Apple&#8217;s iPad was first launched I was openly skeptical about it. What was the point of this device? It wasn&#8217;t as mobile as my phone, or as powerful as my trusty laptop. A satirical video spoof of a man out jogging with an iPad strapped to his arm, and of course all the gaffes about the name better representing a sanitary towel amused me greatly.</p>
<p>A colleague (and long established Apple fan) was quick to snap one up, so it wasn&#8217;t long before I got to see an iPad in the flesh. Then, still, I mocked the device, and (carefully!) used it as a iBeerMat.</p>
<p><a href="http://mukerji.co.uk/2011/12/30/ipad-ownership/28569_389590176932_674036932_4574342_7340243_n/" rel="attachment wp-att-2688"><img class="alignnone size-full wp-image-2688" title="28569_389590176932_674036932_4574342_7340243_n" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/28569_389590176932_674036932_4574342_7340243_n.jpg" alt="" width="604" height="453" /></a></p>
<p>However, last Christmas I was fortunate enough to be gifted an original 32GB wireless iPad. Given my previous iPhone experience it didn&#8217;t take me long to get everything set up. After an initial period of fascination with what is certainly a very interesting gadget, its real benefits started to show.</p>
<p>A year on, this device (yes, this post has been written on my iPad) is used far more than the workstation, laptop or my mobile while I&#8217;m in the house. It doesn&#8217;t do any single thing well enough to warrant its price tag, but it does so many things that I&#8217;d now swiftly replace it if it ever broke.</p>
<p>On that topic, the screen is (understandably) fragile. I managed to crack mine during a spectacularly malcoordinated mishap. Fortunately I sourced a replacement screen kit for around £40 (thanks, eBay!) and while the outer edges of the device show the signs of my rudimentary intrusion, it&#8217;s all working okay.</p>
<h2>Use cases</h2>
<p>The various catch up TV apps mean I can watch television no matter where I am in the house, from the bedroom to the bathroom and of course the kitchen. On the subject of the kitchen, the web browser there is incredibly useful for recipes, and while the iPad is mounted on the wall the touch screen means the talented among us can even navigate the web with our noses while our hands are covered in sticky ingredients.</p>
<p>An iPad is substantially easier to take on holiday than a laptop, and is just as good if like me your only needs are to stay on top of email and social media while you&#8217;re away. Oh, and for taking your own films to watch (try <a href="http://itunes.apple.com/gb/app//id384098375?mt=8" target="_blank">CineXPlayer</a>) on the plane or in the hotel room.</p>
<p>I&#8217;ve used the notepad feature a great deal, while studying or taking measurements etc. When our daughter came along, the iPad became an essential part of the baby feeding kit during the early days when it was important to note down all her intake &#8211; we still know the details of every feed she had during her first month at home!</p>
<p>While watching TV I&#8217;m often distracted by questions such as &#8220;what other film have I seen this guy in?&#8221; or &#8220;surely that&#8217;s not factually correct!&#8221; &#8211; well, the IMDB and Wikipanion apps come straight to the rescue there. Sure, I could look this up on the phone or the laptop, but (and I can&#8217;t believe I&#8217;m saying this now) the laptop is too big and slow to get going, and the mobile does have a rather poky screen.</p>
<p>The battery life is good too &#8211; the iPad craps all over both the iPhone and my laptop in that department.</p>
<p>I use the reminders application a lot to keep on top of my domestic to-do list. If I think of something while I&#8217;m out and about I can add the task from my phone and it&#8217;ll be waiting for me on the iPad when I&#8217;ve got time to crack on with things.</p>
<p>It&#8217;s also my home device of choice for staying up to date with Twitter and Facebook, although the lack of synchronisation between Twitter apps gets quite tedious (ooh I&#8217;ve got a new mention; oh no, I saw that hours ago on my phone). Some web sites are better to read on their free iPad app than the original web version due to fewer adverts &#8211; Mashable is a good example here.</p>
<p>Finally (for now!), it&#8217;s a great portable radio which I use a lot for radio 4 and cricket commentary.</p>
<p><a href="http://mukerji.co.uk/2011/12/30/ipad-ownership/img_1417/" rel="attachment wp-att-2689"><img class="alignnone size-large wp-image-2689" title="IMG_1417" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/IMG_1417-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>&nbsp;</p>
<p>Overall then, I can&#8217;t believe what a fan-boy I&#8217;ve become. The iPad is a great device. There, I said it.</p>
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		<title>Solar panel update &#8211; shortest day review</title>
		<link>http://mukerji.co.uk/2011/12/22/solar-panel-update-shortest-day-review/</link>
		<comments>http://mukerji.co.uk/2011/12/22/solar-panel-update-shortest-day-review/#comments</comments>
		<pubDate>Thu, 22 Dec 2011 07:15:55 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[Solar Technology]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2671</guid>
		<description><![CDATA[On this, the shortest day of 2011, I mark a third of a year since my solar panel installation. Solar PV has been in the news in the meantime because the government made a fairly dramatic U-turn on the FiT (Feed in Tariff) on the 31st October, announcing that only systems registered before the 12th [...]]]></description>
			<content:encoded><![CDATA[<p>On this, the shortest day of 2011, I mark a third of a year since <a title="Solar PV installation" href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/">my solar panel installation</a>. Solar PV has been in the news in the meantime because the government made a fairly dramatic U-turn on the FiT (Feed in Tariff) on the 31st October, announcing that only systems registered before the 12th December would get the then established rates of payback for the full 25 year period; all systems registered after that date would see the FiT almost halved depending on the size of the installation. Just yesterday the Friends of the Earth and a couple of installation companies managed to obtain a high court ruling that this change was unlawful as the government hadn&#8217;t finished their consultation on the matter, so we shall see where this goes!</p>
<p>The government claimed that the FiT scheme had been so successful that it had brought down the cost of installations to the point where they are far too profitable. They wanted payback to take about 16 years, but reckoned some systems would payback in only 8 years. Fortunately for me, my solar system has been registered well within the approved period, so unless the government breaks their existing agreement, I&#8217;m tied in to the more favourable rate of payback for the next 25 years. Time will tell as to how long it&#8217;ll take to reach payback!</p>
<h2>Consumption</h2>
<p>My wonderful Wattson energy monitoring system has been measuring both our consumption and generation since the PV system was installed. In the graph below, it should be noted that the values for August and December are not complete, as the system was brought online late on the 23rd August, and the last measurement was uploaded yesterday morning.</p>
<p><a href="http://mukerji.co.uk/2011/12/22/solar-panel-update-shortest-day-review/energy-aug-dec-2011/" rel="attachment wp-att-2672"><img class="alignnone size-full wp-image-2672" title="energy - aug-dec-2011" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/energy-aug-dec-2011.png" alt="" width="564" height="365" /></a></p>
<p>The blue bars are our consumption, and the green line is our solar PV generation. I&#8217;m pleased to note that in the final week of August, we very nearly generated enough power to meet our needs &#8211; hopefully that&#8217;ll be the case in from May to August.</p>
<p>Our consumption has increased month on month due to the fact that a part of the house (a north facing extension) is heated by electric storage heaters, so as winter has drawn in it has been necessary for us to put a lot of energy in to keep us warm. The remainder of the house is heated by gas fired central heating, which isn&#8217;t included in our consumption here, but we need to use that surprisingly little &#8211; my theory here is that a combination of a heated northern edge and the heat from kitchen appliances goes a long way to maintaining a comfortable temperature.</p>
<p>Another key change in our consumption has been caused by the arrival of our daughter in mid-October. Suddenly we need to run bottle warmers, sterilisers, and electric heaters on cold nights. Also we bath her nearly every night, and as our water is heated overnight we generally need to run the booster immersion heater for 15 minutes or so every evening &#8211; something we rarely used to do.</p>
<p>On the other hand, when compared with the same period last year, our consumption is well down. This is partly due to a milder winter so far (we had snow twice by this time last year!), and also due to the solar generation offsetting our consumption. These two factors are reasonably easy to separate as our night readings are down 40% (milder winter) and our day readings are down 54% (due to solar PV assistance), causing an immediate saving in outgoing bills before the generation payouts listed below are taken into account.</p>
<h2>Generation</h2>
<p>Generation has faded as I&#8217;d expect as we slipped into winter. Given an even spread of cloud throughout the year I&#8217;d expect the green line to be roughly sinusoidal, with a peak in June and a trough in December.</p>
<p>On the 23rd November I submitted my first quarterly generation reading: 817kWh. There&#8217;s an agreed 3.1ppkWh export payout, plus the 43.5ppkWh FiT. The trouble is there&#8217;s no export meter &#8211; when we are generating more than we are consuming my consumption meter simply stops, so there&#8217;s an assumption that we use half and export half of what we generate. I&#8217;m therefore paid (3.1/2)+43.5=45.05ppkWh, so was pleased to receive my first cheque for £366.42 this month.</p>
<p>If every quarter gave an identical yield (which of course they won&#8217;t), I&#8217;d achieve payback in a little over 8 years. Nice. Perhaps though things are even more optimistic: the majority of that quarter was actually winter-side of equinox, so it should be below average. Time will tell &#8211; perhaps the government were right to make a hasty change after all, although I am inclined to suggest that 6 weeks notice wasn&#8217;t at all reasonable on both prospective consumers and those businesses that had cropped up around this industry.</p>
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		<title>Winter tyres on the BMW e46 330d at last</title>
		<link>http://mukerji.co.uk/2011/12/14/winter-tyres-wheels/</link>
		<comments>http://mukerji.co.uk/2011/12/14/winter-tyres-wheels/#comments</comments>
		<pubDate>Wed, 14 Dec 2011 08:58:11 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[BMW E46 330d]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2656</guid>
		<description><![CDATA[Some 15 months ago I embarked on a project to have a set of winter wheels and tyres for the 330d. Naturally I didn&#8217;t get around to it for last winter, so we had lots of snow. This year however, I am ready! So this week as temperatures seem to have dropped below the magic [...]]]></description>
			<content:encoded><![CDATA[<p>Some 15 months ago I embarked on a project to have a set of <a title="BMW e46 – winter wheels for winter tyres" href="http://mukerji.co.uk/2010/09/18/winter-tyres/" target="_blank">winter wheels</a> and tyres for the 330d. Naturally I didn&#8217;t get around to it for last winter, so we had lots of snow. This year however, I am ready! So this week as temperatures seem to have dropped below the magic 7°C mark, I&#8217;ve taken the 18&#8243; MV2s off for the winter.</p>
<p><a href="http://mukerji.co.uk/2011/12/14/winter-tyres-wheels/dscn3565/" rel="attachment wp-att-2658"><img class="alignnone size-large wp-image-2658" title="DSCN3565" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/DSCN3565-800x600.jpg" alt="" width="800" height="600" /></a></p>
<p>Getting the rear wheels off the 330d was a real bitch, a combination of the cold and a lack of copper grease ensured this job took me hours. The new tyres are 225/45 R17  <a href="http://www.pirelli.com/tyre/gb/en/car/sheet/winter_sottozero_serie2.html" target="_blank">Pirelli Sottozero Series 2s</a> which I mail  ordered from <a href="http://www.oponeo.co.uk/" target="_blank">Oponeo</a>. Below the difference in tread style is obvious when compared to one of the 255/35 R18 summer tyres (Falkens).</p>
<p><a href="http://mukerji.co.uk/2011/12/14/winter-tyres-wheels/dscn3566/" rel="attachment wp-att-2659"><img class="alignnone size-large wp-image-2659" title="summer/winter tyre comparison" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/DSCN3566-800x600.jpg" alt="" width="800" height="600" /></a></p>
<p>The tread blocks are much bigger and further apart, which should make them far less liable to clog up with snow. Also the rubber is slightly different &#8211; far softer at lower temperatures.</p>
<p><a href="http://mukerji.co.uk/2011/12/14/winter-tyres-wheels/dsc_1233/" rel="attachment wp-att-2660"><img class="alignnone size-large wp-image-2660" title="330d on winter wheels and tyres" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/DSC_1233-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>So the car doesn&#8217;t look quite as purposeful on these smaller wheels, although the brakes really do look like they&#8217;re bulging out of the wheels now! The ride quality has certainly improved thanks to the higher profile tyres, but then the 18s demand such skinny tyres that even the M5 rode better.</p>
<p>I can&#8217;t be too critical of the performance just yet as the tyres haven&#8217;t had a chance to bed in, but so far things feel pretty good. There&#8217;s <em>slightly </em>less stability when I grab the car by the scruff of the neck, but any misbehaviour is entirely controllable as breakaway is less sudden that on the 18s. When out and about in the wet in near freezing conditions, the car is certainly at least as capable as on the 18s. Due to the camber matters have always noticeably improved as tyres bed in on the 330d, so I&#8217;m hopeful for some serious winter performance. I&#8217;ll report back when I&#8217;ve got some mud, snow and ice experience!</p>
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		<title>e46 window regulator replacement</title>
		<link>http://mukerji.co.uk/2011/12/11/e46-window-regulator-replacement/</link>
		<comments>http://mukerji.co.uk/2011/12/11/e46-window-regulator-replacement/#comments</comments>
		<pubDate>Sun, 11 Dec 2011 09:06:47 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[BMW E46 330d]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2648</guid>
		<description><![CDATA[Recently I made the mistake of lowering a rear window while a window blind was stuck to it. The suction cup disappeared down into the door, so I went to raise the window, at which point it all went horribly wrong! There was a sound like breaking glass, and the window got stuck. Fortunately it [...]]]></description>
			<content:encoded><![CDATA[<p>Recently I made the mistake of lowering a rear window while a window blind was stuck to it. The suction cup disappeared down into the door, so I went to raise the window, at which point it all went horribly wrong! There was a sound like breaking glass, and the window got stuck. Fortunately it transpired that no glass was broken, but the window regulator was, and that needed replacing. So the most obvious question is, what the hell is a window regulator?</p>
<p><a href="http://mukerji.co.uk/2011/12/11/e46-window-regulator-replacement/dsc_1192-copy/" rel="attachment wp-att-2649"><img class="alignnone size-large wp-image-2649" title="Broken window regulator" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/DSC_1192-Copy-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>So in the above photo, the top item is a replacement window regulator, and the lower item is the broken one I removed. There&#8217;s a steel cable that&#8217;s wrapped around the central drum, and that had burst off the drum, and the noise I&#8217;d heard was it flipping around the drum and hitting the window glass.</p>
<p>Replacing the item isn&#8217;t especially hard. I found a good guide here: <a href="http://www.bmwgm5.com/Rear_Window_Regulator.htm">http://www.bmwgm5.com/Rear_Window_Regulator.htm</a></p>
<p>The part is BMW B51.35.8.212.099 which currently retails at £75.84 ex VAT.</p>
<p><a href="http://mukerji.co.uk/2011/12/11/e46-window-regulator-replacement/dsc_1191-copy/" rel="attachment wp-att-2650"><img class="alignnone size-large wp-image-2650" title="DSC_1191 (Copy)" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/12/DSC_1191-Copy-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
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		<title>BMW e46 speakers not working</title>
		<link>http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/</link>
		<comments>http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/#comments</comments>
		<pubDate>Tue, 13 Sep 2011 19:37:52 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[BMW E46 330d]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2625</guid>
		<description><![CDATA[For a few years now, the 330d&#8217;s rear right speaker hasn&#8217;t been working. As I sit in the front, I chose not to let that bother me. However recently, both front and rear left speakers cut in and out a few times, and then stopped working altogether. This left the front right and the sub, [...]]]></description>
			<content:encoded><![CDATA[<p>For a few years now, the 330d&#8217;s rear right speaker hasn&#8217;t been working. As I sit in the front, I chose not to let that bother me. However recently, both front and rear left speakers cut in and out a few times, and then stopped working altogether. This left the front right and the sub, which was enough to prompt me in to action. I know the screen at the front is a fairly dumb terminal, and that the audio gear is all in the boot:</p>
<p><img class="alignnone" title="comms deck" src="http://p.mukerji.co.uk/2006-05-20-wlw/7.jpg" alt="" width="800" height="602" /></p>
<p>I traced the problem to the item described above as &#8220;Radio/Car Amp&#8221;. It&#8217;s a Becker BM54, and a short trawl of the internet quickly revealed that the amplifier&#8217;s output stages are a fairly weak link. Replacement units seem to cost several hundred pounds. Hmm.</p>
<p>There were some eBay sellers willing to effect a repair for a couple of hundred quid, mentioning reflowing solder joints. While consulting various forums though I saw a recommendation that caught my eye. It seems that <a href="http://www.cartronics.co.uk/" target="_blank">Cartronics</a>, a firm based just a few miles up the road from me who did a decent job of installing a Thatcham approved immobiliser in my second E30 M3, offer a warrantied repair for similar money. They claimed their repair involved entirely replacing the amplifier&#8217;s output stages to both ensure this wouldn&#8217;t happen again and provide a superior sound. I concluded that while the £210 they were asking was a bit rich compared with the cost of a standard head unit, the sound quality certainly couldn&#8217;t get any worse, and they were at least a devil I knew.</p>
<p>I dropped the unit off late on Saturday, and they called lunchtime today (Tuesday) to say it was ready. I understand they also provide a service by mail. This evening I&#8217;ve verified the repair, and also concluded that the sound quality certainly isn&#8217;t any worse.</p>
<p>So, if your BMW (or Range Rover) speakers are cutting out, locate your amplifier module and get it sorted. While mine is a B54, it replaced the B24 which also suffered in a similar matter, and I noted Cartronics had a couple of those also in for repair at the same time. In e46-land, to remove the module, start by lifting up the boot floor:</p>
<p><a href="http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/img_1202/" rel="attachment wp-att-2626"><img class="alignnone size-large wp-image-2626" title="IMG_1202" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1202-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>Remove your rude-boy sub, tow hook and spare wheel cover. Then using a 10mm socket release the two black plastic nuts and open the flap to the comms deck. I found a 3/8 extension a useful prop to hold the flap up.</p>
<p>&nbsp;</p>
<p><a href="http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/img_1199/" rel="attachment wp-att-2627"><img class="alignnone size-large wp-image-2627" title="IMG_1199" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1199-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>There&#8217;s a big black block connector that can be unclipped. Before going too much further though I&#8217;d trace that to the nearby (and just out of shot below) black connector and make sure all the pins in that are firmly home &#8211; I&#8217;ve lost sound before due to those working loose.</p>
<p>&nbsp;</p>
<p><a href="http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/img_1197/" rel="attachment wp-att-2628"><img class="alignnone size-large wp-image-2628" title="IMG_1197" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1197-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>In the above picture I&#8217;ve got two unused white connectors. The lower left one is from the old CD changer &#8211; my rather primitive iPod kit actually replaces that in the black block connector. The loose white connector at the top by the TV module is the old A/V connector &#8211; my DVD player has replaced that. So, remove the black block connector, the aerial (on the left) and the 8mm nut, and whip out the unit.</p>
<p><a href="http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/img_1196/" rel="attachment wp-att-2629"><img class="alignnone size-large wp-image-2629" title="IMG_1196" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1196-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>&nbsp;</p>
<p>Send it off to repair, and it should come back with one of these stuck on it.</p>
<p><a href="http://mukerji.co.uk/2011/09/13/bmw-e46-speakers-not-working/img_1193/" rel="attachment wp-att-2630"><img class="alignnone size-large wp-image-2630" title="IMG_1193" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1193-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>Plug it in and off you chug down the road. Boom-tish, boom-tish, etc. <img src='http://mukerji.co.uk/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
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		<title>Solar PV installation</title>
		<link>http://mukerji.co.uk/2011/09/03/solar-pv-installation/</link>
		<comments>http://mukerji.co.uk/2011/09/03/solar-pv-installation/#comments</comments>
		<pubDate>Sat, 03 Sep 2011 15:53:22 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[Home Improvement]]></category>
		<category><![CDATA[Neil Mukerji]]></category>
		<category><![CDATA[Solar Technology]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2572</guid>
		<description><![CDATA[Solar what? I&#8217;ve not got a history of being especially green, yet I&#8217;ve just done something (apparently) rather &#8220;eco&#8221;. I&#8217;ve sold the M5, and rather than replacing it I have invested those funds along with some savings into a fairly noticeable set of solar panels for the house roof. There are three good reasons to [...]]]></description>
			<content:encoded><![CDATA[<h2>Solar what?</h2>
<p>I&#8217;ve not got a history of being especially green, yet I&#8217;ve just done something (apparently) rather &#8220;eco&#8221;. I&#8217;ve <a title="Farewell M5" href="http://mukerji.co.uk/2011/07/16/farewell-m5/" target="_blank">sold the M5</a>, and rather than replacing it I have invested those funds along with some savings into a fairly noticeable set of solar panels for the house roof. There are three good reasons to do this:</p>
<p>1) It is ecologically preferable. Just 3 years ago we were a 3 car family, totalling nearly 10 litres and 700hp of motoring genius. There were all sorts of excursions such as trips to the Nűrburgring etc, but since then we&#8217;ve moved to larger house and become more invested in our local jobs and making a nest for our imminent family. It makes sense to try and put something back in. That said though to be honest I&#8217;d be quick to buy another large V8 if I thought I&#8217;d have the time and money to drag it sideways around circuits all weekend. Hmm.</p>
<p>2) More convincingly, there are substantial financial incentives currently in place for solar PV installations. Install after March 2012 and these incentives start fading annually, but install before April 2012 and there&#8217;s a tasty government backed, indexed linked &#8220;Feed in Tariff&#8221; (FiT) that should provide ROI for 25 years.</p>
<p>3) Most interestingly, this is some geeky apparatus. I&#8217;ve got some rather cool kit and can produce lots of stats and graphs. Fruity!</p>
<h2>Research</h2>
<p>So anyway, all this started at the beginning of the year when the cost of heating water here at home was starting to get to me. At that point I was interested in solar thermal (and I still am), but my research from that point forward suggested that it would make sense to get solar PV first (to get in before the April 2012 deadline), and worry about solar thermal once I&#8217;d recovered from that. I&#8217;m fortunate that my friend Henry&#8217;s (of <a title="12 meals, 4 men, 3 peaks, and an M5" href="http://mukerji.co.uk/2011/06/28/3-peaks-and-m5/" target="_blank">three peaks</a> fame) father is the project leader for <a href="http://rushcliffesolar.blogspot.com/" target="_blank">Rushcliffe Solar</a>, and was able to point me in the right direction on many of these matters.</p>
<p>Still it wasn&#8217;t until July, when amidst British Gas&#8217;s announcement that they were going to significantly increase energy costs from mid-August, that I took a slightly different route to work and noticed a couple of nearby homes had recently had some panels fitted.</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_10761/" rel="attachment wp-att-2573"><img class="alignnone size-large wp-image-2573" title="neighbours" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_10761-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>The above photo neatly highlights both the different styles of panels available, and the restrictions that roof size can make on an installation. Personally, I don&#8217;t like those silver trimmed efforts on the right, and I really like those black panels on the left. Also, the house on the right was clearly restricted to 12 panels by the size of their roof. With a good panel yielding around 245W, that installation on the right can at best produce 2,940W, whereas the 16 panels on the left could produce 3,920W. Systems under 4kW are eligible for the most favourable FiT, so I wondered if the installation on the left was exactly what I was looking for.</p>
<p>That evening on the way home from work I decided to visit the house on the left and see if they wouldn&#8217;t mind giving me some details. I was lucky enough to find the owners extremely enthusiastic and more than happy to pass on as much information as I could digest. Those are 245W Solar World PV modules, and they were installed by a company called <a href="http://www.eco-fusion.co.uk/" target="_blank">Eco Fusion</a>. Later that week I called up and soon had a site survey booked in.</p>
<h2>Installation size and pre-requisites</h2>
<p>I also realised that I&#8217;d probably have to do something about my house&#8217;s original 1975 fuse box:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0800/" rel="attachment wp-att-2574"><img class="alignnone size-large wp-image-2574" title="DSC_0800" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0800-401x600.jpg" alt="" width="401" height="600" /></a></p>
<p>So I booked an electrician from <a href="http://www.thamesidebusinessassoc.co.uk/Our_Members.htm" target="_blank">Diane&#8217;s business group</a> to come in and replace that. As it happens he arrived on the same day as the PV survey, which handily allowed him to confirm their requirements. Once he had finished the fuse cupboard looked rather more satisfactory:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0848/" rel="attachment wp-att-2575"><img class="alignnone size-large wp-image-2575" title="DSC_0848" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0848-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>Anyway, back to the PV survey, which is where things got interesting. I&#8217;d roughly measured the roof, and had feared that we would only be able to have a 2&#215;7 panel array up there. The survey guy explained that in order to protect against wind and to ensure running water doesn&#8217;t surge over the gutter, it&#8217;s necessary to ensure that the panels are at least 200mm from any roof edge. Consequently, we could only fit a 2&#215;6 panel array on the main roof. He therefore suggested that we put 4 panels on the extension roof. Let&#8217;s put this into context with a photograph:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0828/" rel="attachment wp-att-2576"><img class="alignnone size-large wp-image-2576" title="DSC_0828" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0828-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>Yeah, it&#8217;s an ugly house. At least there&#8217;s no beauty to lose by coating it in solar technology! The house faces a little east of south, so the extension roof would be okay in the morning but would be shaded by the main house roof later in the day &#8211; not ideal. Still, the surveyor left and I mulled things over while I waited to hear back from them. I went out for a run and, having memorized the roof and panel dimensions, pondered the situation.</p>
<p>Suddenly I had a Eureka moment &#8211; what if the panels could be mounted in landscape rather than portrait? I knew the panels were 1001mm wide and a 20mm gap is required between each panel. So for panels + gaps + run-off the roof would need to be (4&#215;1001) + (3&#215;20) + (2&#215;200) = 4464mm from ridge to gutter. There was only one way to be sure, and that was to get up there and measure it with a tape measure, and I was pleased to note it could be managed with a few mm to spare! So I called the shop and put this suggestion to them, and after and hour or so they came back to me and said it would work out.</p>
<p>I should note here that since then I&#8217;ve done some reading around as to what the minimum recommended distance from the edge is, and I&#8217;ve seen a variety of responses from 200mm to 600mm. So it would seem that my supplier (perhaps predictably) was willing to (literally!) sail a little closer to the wind than most. Still, there&#8217;s plenty of room from the left and right, and the panels can&#8217;t be seen over the ridge at all from the rear of the house (the danger point for wind-loading). We&#8217;ve had heavy rain and haven&#8217;t suffered with water flowing off the panels over the guttering at the front either.</p>
<h2>Final specification</h2>
<p>I had been quoted for 16x245W <a href="http://www.solardesigntool.com/components/module-panel-solar/Solar%20World/SW-245-Mono/specification-data-sheet.html" target="_blank">Solar World SW245 Mono panels</a> (3,920W), and a <a href="http://www.fronius.com/cps/rde/xchg/SID-97382F40-A25F3800/fronius_international/hs.xsl/83_16684_ENG_HTML.htm" target="_blank">Fronius TL 3.6 inverter</a> (max input 3,800W, max output 3,600W). Obviously I questioned this &#8211; there&#8217;s the potential for the panels to overdrive this inverter. I was assured this was standard practice and that the inverter could cope with it just fine. I&#8217;ve pondered this and concluded that peak output is extremely unlikely to be delivered by the panels for long, and these inverters are designed to sense overload and shut down. If that happens, or if it&#8217;s damaged, I&#8217;ll hold Eco-Fusion accountable, but it does seem like a sensible approach.</p>
<p>The panels do degrade with time. Their specification sheet (linked to above) states they carry warranty to produce at least 90% of rated power after 10 years and at least 80% of rated power after 25 years. After 3% degradation they will match the inverter.</p>
<h2>Installation</h2>
<p>So, before the installation we had some scaffold arrive:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0839/" rel="attachment wp-att-2577"><img class="alignnone size-large wp-image-2577" title="DSC_0839" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0839-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0840-2/" rel="attachment wp-att-2578"><img class="alignnone size-large wp-image-2578" title="DSC_0840" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0840-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>Now, that evening I decided to make use of this. Note the yellow tinge on the roof &#8211; there was a huge amount of moss and general roof garden up there. So I decided to get up there and blast it all off &#8211; with some kind assistance from <a href="https://www.facebook.com/DecompStar" target="_blank">Robin the second</a> and <a href="https://www.facebook.com/profile.php?id=728406344" target="_blank">Ben the first</a>. The roof was cleaned by nightfall.</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_11321/" rel="attachment wp-att-2579"><img class="alignnone size-large wp-image-2579" title="IMG_1132[1]" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_11321-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/302335_10150255058261933_674036932_7897757_4640915_n/" rel="attachment wp-att-2580"><img class="alignnone size-full wp-image-2580" title="302335_10150255058261933_674036932_7897757_4640915_n" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/302335_10150255058261933_674036932_7897757_4640915_n.jpg" alt="" width="720" height="538" /></a></p>
<p>The following morning the house roof looked rather different.</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0851/" rel="attachment wp-att-2581"><img class="alignnone size-large wp-image-2581" title="DSC_0851" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0851-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>It was suggested as a result of this process being documented on Facebook that we had removed a protective layer on the tiles by pressure washing them. Certainly there was a fairly radical change in colour which suggested some kind of staining had been removed. I inspected them carefully and compared the way they handled water being poured over them with the tiles on the back of the house (that we didn&#8217;t clean). There was no difference. I consulted an experienced roofer and trusted friend on the matter, and he seemed to think there was no issue. Still, to be safe I gave the roof a couple of coats of transparent tile seal.</p>
<p>Installation day itself was miserable &#8211; overcast with pretty constant drizzle. Did this stop the installation? Hell no!</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1134/" rel="attachment wp-att-2582"><img class="alignnone size-large wp-image-2582" title="IMG_1134" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1134-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>At about 10am a 3 man team arrived &#8211; two for the roof and an electrician. There was work to be done in the electrical cupboard, and the inverter was to be installed in the loft.</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1135/" rel="attachment wp-att-2583"><img class="alignnone size-large wp-image-2583" title="IMG_1135" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1135-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>On the roof the rails went up first, and then the panels were fixed in place.</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1137/" rel="attachment wp-att-2584"><img class="alignnone size-large wp-image-2584" title="IMG_1137" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1137-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1141/" rel="attachment wp-att-2585"><img class="alignnone size-large wp-image-2585" title="IMG_1141" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1141-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1146/" rel="attachment wp-att-2586"><img class="alignnone size-large wp-image-2586" title="IMG_1146" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1146-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>In the loft:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1139/" rel="attachment wp-att-2587"><img class="alignnone size-large wp-image-2587" title="IMG_1139" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1139-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1149/" rel="attachment wp-att-2588"><img class="alignnone size-large wp-image-2588" title="IMG_1149" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1149-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>In the electrical cupboard:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_1147/" rel="attachment wp-att-2589"><img class="alignnone size-large wp-image-2589" title="IMG_1147" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_1147-800x597.jpg" alt="" width="800" height="597" /></a></p>
<p>By 3pm they were finished &#8211; very impressive given what they had to achieve and the weather. The panels are connected into two groups of eight and then feed into the black (DC) side of the inverter. From the inverter a cable runs to the roof edge and then subtly down the side of the house and into the electrical cupboard where the distribution board is driven.</p>
<h2>Measuring</h2>
<p>The installation came with a <a href="http://www.diykyoto.com/uk" target="_blank">Wattson energy meter</a>. This is a fantastic piece of kit, especially if it is installed correctly, which it almost was. It comes with a couple of sensors which clip around live cables, and by measuring the EMF it knows how much current is flowing in those cables. Sadly though, it doesn&#8217;t know which way the current is flowing. It is bright enough to understand that one of the sensors may be for generated input power, which makes it ideal for the job.</p>
<p>It was installed with the generator clip in the right place, but the usage clip connected to our main feed from the grid. Under circumstances where we were generating less than we were using it worked a treat, but as it always assumed that the current sensed between the house and the grid was inbound (not export), when we generated more than we used it got things wrong. I fixed this by installing that clip within the distribution board on the feed to the RCDs (post-generator input), but that meant that it knew nothing about our night-time only circuit which powers things like our storage and immersion heaters. Fortunately the Wattson can have additional inputs, so I invested in another clip and now the system works perfectly.</p>
<p>The Wattson logs all data and I can access it via USB using my laptop and the inevitably named software &#8220;Holmes&#8221;.</p>
<p>I&#8217;ve also got an Environ Current Cost meter and internet bridge. I&#8217;ve connected this in such a way that it measures only our generated power and it logs this every 15 minutes on the internet. This means that from anywhere in the world, I can at any time see how much energy the house is generating. Which, as a geek, makes me very happy indeed. So for instance, here&#8217;s our generation stats so far today:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/img_11701/" rel="attachment wp-att-2590"><img class="alignnone size-large wp-image-2590" title="IMG_1170[1]" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/IMG_11701-e1315063191955-800x533.png" alt="" width="800" height="533" /></a></p>
<p>Isn&#8217;t that wonderful! The blue line and scale on the right are the temperature in the office here at home. Here are the two meters next to each other earlier today:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0880/" rel="attachment wp-att-2591"><img class="alignnone size-large wp-image-2591" title="DSC_0880" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0880-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>That&#8217;s 3.17kW of energy being harvested from the roof on the left, and an export (hence the minus symbol) of 2.7kW on the right. From that we can deduce that the house is using a little under 500W, which is about right (fridge, freezer, server, laptop, computer, 2 screens, modem, router, switches etc). I have even seen generation figures of just over 3.6kW which is nice and proves that everything is certainly working as it should. To drive all this the electrical cupboard has a couple of wireless transmitters and a total of 4 sensor clips:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0882/" rel="attachment wp-att-2592"><img class="alignnone size-large wp-image-2592" title="DSC_0882" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0882-800x535.jpg" alt="" width="800" height="535" /></a></p>
<h2>Financials</h2>
<p>So as you can see from the generation meter above, in the ten days since this system was brought online we&#8217;ve generated 146kWh. At the current FiT rate of 43.3ppkWh, that&#8217;s £63.22 I&#8217;m owed. Put into perspective against the massive capital outlay required to install this system that&#8217;s not much, but it&#8217;ll continue to grow with no additional effort. There are also other revenues. Firstly, my supplier pays 3.1ppkWh exported. As they can&#8217;t tell exactly what was exported they assume 50% (which probably suits them more than me), but that&#8217;s another £2.26 off my next bill so far. If that is averaged over the quarterly cycle that&#8217;s a more meaningful £20 saving. More importantly though, our daytime usage from the grid has more than halved since these panels were installed, so especially in the summer months those bills will be drastically reduced.</p>
<p>As I&#8217;d expect from such a big financial outlay, this is a fantastic toy. However, compared with say a car (and I spent more on the 330d when I bought it), it should prove to be rather more profitable! As it happened it was installed on my 32nd birthday, and it is my hope that the capital expenditure will have been recouped before I am 40. I will post again some time around late October when I&#8217;ve got statistics for the system being active either side of equinox &#8211; hopefully from there I&#8217;ll be able to extrapolate with enough meaningful data to make a more accurate prediction. Until then, here are some photos of the completed system:</p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0853/" rel="attachment wp-att-2594"><img class="alignnone size-large wp-image-2594" title="DSC_0853" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0853-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/dsc_0856/" rel="attachment wp-att-2593"><img class="alignnone size-large wp-image-2593" title="DSC_0856" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/DSC_0856-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2011/09/03/solar-pv-installation/weekoutput/" rel="attachment wp-att-2595"><img class="alignnone size-large wp-image-2595" title="weekoutput" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/09/weekoutput-774x600.png" alt="" width="774" height="600" /></a></p>
<p>&nbsp;</p>
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		<title>BMW e39 M5 VBR (fuel burn rate)</title>
		<link>http://mukerji.co.uk/2011/08/22/bmw-e39-m5-vbr-fuel-burn-rate/</link>
		<comments>http://mukerji.co.uk/2011/08/22/bmw-e39-m5-vbr-fuel-burn-rate/#comments</comments>
		<pubDate>Mon, 22 Aug 2011 07:25:27 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[BMW E39 M5]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2562</guid>
		<description><![CDATA[A short video demonstrating how to get a BMW e39 M5 (or any e39 with high OBC) to tell you how many litres of fuel it is burning per hour (instantaneous reading). This is extremely useful for determining how healthy the air mass meters are &#8211; if they&#8217;re in good condition an E39 M5 should [...]]]></description>
			<content:encoded><![CDATA[<p>A short video demonstrating how to get a BMW e39 M5 (or any e39 with high OBC) to tell you how many litres of fuel it is burning per hour (instantaneous reading). This is extremely useful for determining how healthy the air mass meters are &#8211; if they&#8217;re in good condition an E39 M5 should burn almost 140 litres/hour at full throttle (easier to measure in a high gear).</p>
<p><iframe width="800" height="485" src="http://www.youtube.com/embed/qJn8M1vEqsU?hl=en&#038;fs=1" frameborder="0" allowfullscreen></iframe></p>
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		<title>Farewell M5</title>
		<link>http://mukerji.co.uk/2011/07/16/farewell-m5/</link>
		<comments>http://mukerji.co.uk/2011/07/16/farewell-m5/#comments</comments>
		<pubDate>Sat, 16 Jul 2011 09:57:14 +0000</pubDate>
		<dc:creator>Neil Mukerji</dc:creator>
				<category><![CDATA[BMW E39 M5]]></category>

		<guid isPermaLink="false">http://mukerji.co.uk/?p=2569</guid>
		<description><![CDATA[So today I delivered the M5 to its new owner. It was ultimately a pleasant sale, and in fact despite advertising on both Pistonheads and Auto Trader, the first car I&#8217;ve ever sold through Facebook &#8211; to a friend&#8217;s dad. Looking back over the near three years of ownership, I have thoroughly enjoyed this car. [...]]]></description>
			<content:encoded><![CDATA[<p>So today I delivered the M5 to its new owner. It was ultimately a pleasant sale, and in fact despite advertising on both Pistonheads and Auto Trader, the first car I&#8217;ve ever sold through Facebook &#8211; to a friend&#8217;s dad.</p>
<p>Looking back over the near three years of ownership, I have thoroughly enjoyed this car. I&#8217;ve spent less time with it recently, but at first there was a flurry of activity including a <a title="Track Outing!" href="http://mukerji.co.uk/2008/12/23/track-outing/" target="_blank">trip to Curborough</a>, and a <a title="M5 Clutch Change" href="http://mukerji.co.uk/2009/01/04/m5-clutch-change/" target="_blank">DIY clutch change</a>; my favourite photos from those to follow:</p>
<p><a href="http://mukerji.co.uk/2008/12/23/track-outing/dsc_0186/" rel="attachment wp-att-495"><img class="alignnone size-large wp-image-495" title="no hands!" src="http://mukerji.co.uk/wp-content/uploads/2008/12/dsc_0186-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p><a href="http://mukerji.co.uk/2009/01/04/m5-clutch-change/dsc_0026-2/" rel="attachment wp-att-676"><img class="alignnone size-large wp-image-676" title="dsc_0026" src="http://mukerji.co.uk/wp-content/uploads/2009/01/dsc_0026-800x535.jpg" alt="" width="800" height="535" /></a></p>
<p>I had dearly wanted to take this car to the Nurburgring. I imagine the M5 would intensely contrast with the E30 M3; I&#8217;d love to see how the extra weight hurt in the tighter corners, while I&#8217;m sure 400bhp and 500Nm would help immensely at times, especially up Ex-Mϋhle. More recently there was the epic three peaks weekend:</p>
<p><a href="http://mukerji.co.uk/2011/06/28/3-peaks-and-m5/olympus-digital-camera/" rel="attachment wp-att-2459"><img class="alignnone size-large wp-image-2459" title="Cast" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/06/P4070940-800x600.jpg" alt="" width="800" height="600" /></a></p>
<p>As is common, this car leaves me in far better condition than it arrived, and yet worth a lot less. That&#8217;s motoring for you. Even so, I think I&#8217;ve owned this car at exactly the right time. Any younger, and I would either have crashed it or just been arrested, any older and I wouldn&#8217;t have been likely to really use it to its potential.</p>
<p>So, what&#8217;s next? As soon as I put it up for sale I was asked that question a lot. The answer is&#8230; nothing just yet. Yes, that is partially because I&#8217;ve got a baby on the way and that changes priorities, but the main reason is that I&#8217;m frankly tired of trying to use Britain&#8217;s roads. Barely anyone else can, and having a decent car is really, really frustrating! So for now at least, I&#8217;ll just chug around in the tractor.</p>
<p>Anyway, let&#8217;s not let such depression detract from such a great car. Here it is, the most ridiculous car I&#8217;ve ever owned. Hurrah!</p>
<p><a href="http://mukerji.co.uk/cars/2000-e39-m5/dsc_0654-2/" rel="attachment wp-att-2400"><img class="alignnone size-large wp-image-2400" title="BMW e39 M5 for sale" src="http://mukerji.s3.amazonaws.com/wp-content/uploads/2011/06/DSC_0654-800x535.jpg" alt="" width="800" height="535" /></a></p>
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