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	<title>Portent &#187; engineering</title>
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	<link>http://portent.org</link>
	<description>Interesting Facts and Websites</description>
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		<title>Higher Efficiency Engine</title>
		<link>http://portent.org/higher-efficiency-engine/</link>
		<comments>http://portent.org/higher-efficiency-engine/#comments</comments>
		<pubDate>Fri, 23 Dec 2011 08:59:05 +0000</pubDate>
		<dc:creator>David</dc:creator>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[technology]]></category>

		<guid isPermaLink="false">http://portent.org/?p=740</guid>
		<description><![CDATA[The efficiency of the Internal Combustion engine has not significantly increased over the last few years. Oh sure there have marginal increases, using turbo-charging but the most efficient has been diesel. That&#39;s only because a gallon of diesel has 25% more energy than a gallon of gas. There was of course the Wankel Rotary engine [...]]]></description>
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		<item>
		<title>Steampunk Centipede</title>
		<link>http://portent.org/steampunk-centipede/</link>
		<comments>http://portent.org/steampunk-centipede/#comments</comments>
		<pubDate>Sun, 30 Oct 2011 18:14:35 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[mechanical]]></category>

		<guid isPermaLink="false">http://portent.org/index.php/2007/07/08/steampunk-centipede/</guid>
		<description><![CDATA[This is both bizarre looking and a remarkable piece of engineering. It&#8217;s a steam powered locomotive with a centipede like locomotion method. It&#8217;s not a fake, there is a video on the linked page that shows in being operated by remote control. Steampunk is a genre of writing that posits Victorians with advanced technology based [...]]]></description>
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		<title>Human Powered Hovercraft</title>
		<link>http://portent.org/human-powered-hovercraft/</link>
		<comments>http://portent.org/human-powered-hovercraft/#comments</comments>
		<pubDate>Mon, 12 Sep 2011 05:12:26 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[aviation]]></category>
		<category><![CDATA[design]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[UK]]></category>

		<guid isPermaLink="false">http://portent.org/?p=1814</guid>
		<description><![CDATA[Fifty years ago, the first hovercraft was invented here in the UK. I travelled on a commercial one in 1976 between England and France. It was fun and fast apart from the rough weather then. Now, this project Steam Boat Willy, named presumably after the first Walt Disney Mickey Mouse Cartoon is a hand built [...]]]></description>
		<wfw:commentRss>http://portent.org/human-powered-hovercraft/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Engines of Ingenuity</title>
		<link>http://portent.org/engines-of-ingenuity/</link>
		<comments>http://portent.org/engines-of-ingenuity/#comments</comments>
		<pubDate>Sun, 03 Jul 2011 00:36:46 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[history]]></category>
		<category><![CDATA[resource]]></category>
		<category><![CDATA[U.S.]]></category>

		<guid isPermaLink="false">http://portent.org/index.php/2007/07/21/engines-of-ingenuity/</guid>
		<description><![CDATA[PBR (Public Broadcasting Radio) in the USA is the nearest equivalent to the BBC in the UK. One of their longest running broadcasts has been Engines of Ingenuity that tells the story of how our culture is formed by human creativity. Written and hosted by John Lienhard, it is heard nationally on Public Radio and [...]]]></description>
		<wfw:commentRss>http://portent.org/engines-of-ingenuity/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Citizen Engineer &#8211; Not a web Comic</title>
		<link>http://portent.org/citizen-engineer-not-a-web-comic/</link>
		<comments>http://portent.org/citizen-engineer-not-a-web-comic/#comments</comments>
		<pubDate>Sun, 29 May 2011 14:08:34 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[information]]></category>

		<guid isPermaLink="false">http://portent.org/?p=1753</guid>
		<description><![CDATA[Despite the web-comic approach, this is a website for those who want to understand how things work. In this case it&#8217;s making a reader/write for sim cards and also how to wire up a pay-phone so you can use it for VOIP type calls. there&#8217;s plenty of such information on the web but the web-comic [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How Round Is Your Circle</title>
		<link>http://portent.org/how-round-is-your-circle/</link>
		<comments>http://portent.org/how-round-is-your-circle/#comments</comments>
		<pubDate>Wed, 04 May 2011 20:47:15 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[maths]]></category>
		<category><![CDATA[technology]]></category>

		<guid isPermaLink="false">http://portent.org/?p=2057</guid>
		<description><![CDATA[How round is your circle is a book published in 2008 about engineering and mathematics. If you are interested in how to draw circles, cut slices through cones but in a practical sense, not just a drawing then this is the book for you. I like this kind of stuff, things like the shape of [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Engine Carving Video</title>
		<link>http://portent.org/engine-carving-video/</link>
		<comments>http://portent.org/engine-carving-video/#comments</comments>
		<pubDate>Mon, 11 Apr 2011 04:02:41 +0000</pubDate>
		<dc:creator>David</dc:creator>
				<category><![CDATA[default]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[technology]]></category>
		<category><![CDATA[video]]></category>

		<guid isPermaLink="false">http://portent.org/?p=233</guid>
		<description><![CDATA[Watching a solid chunk of metal being carved by a machine into a high precision engine block is just amazing. When you realise that the accuracy of the carving is fractions of a millimetre, the precision of the carving robot is a wonder. This 10 minute video shows the block, from start to finished block. [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Bio Diesel Conversion Facts Website</title>
		<link>http://portent.org/bio-diesel-conversion/</link>
		<comments>http://portent.org/bio-diesel-conversion/#comments</comments>
		<pubDate>Fri, 01 Apr 2011 11:44:11 +0000</pubDate>
		<dc:creator>David</dc:creator>
				<category><![CDATA[automobile]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[information]]></category>
		<category><![CDATA[technology]]></category>

		<guid isPermaLink="false">http://portent.org/?p=822</guid>
		<description><![CDATA[Diesel (or PetroDiesel to distinguish it from BioDiesel) is derived from distilling Petroleum. A gallon of gas (sorry Petrol) has about 15% less energy than a gallon of diesel and in cars the difference can be 40% more mileage for diesel engined vehicles than petrol. Of course Petrodiesel is a fossil fuel. It takes millions [...]]]></description>
		<wfw:commentRss>http://portent.org/bio-diesel-conversion/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>30 seconds &#8211; Photos of Motorbike Models made from Watch Parts</title>
		<link>http://portent.org/30-seconds-photos-of-motorbike-models-made-from-watch-parts/</link>
		<comments>http://portent.org/30-seconds-photos-of-motorbike-models-made-from-watch-parts/#comments</comments>
		<pubDate>Sat, 19 Mar 2011 17:21:57 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[30 seconds]]></category>
		<category><![CDATA[art]]></category>
		<category><![CDATA[craft]]></category>
		<category><![CDATA[design]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[models]]></category>
		<category><![CDATA[photos]]></category>

		<guid isPermaLink="false">http://portent.org/index.php/2007/09/07/30-seconds-photos-of-motorbike-models-made-from-watch-parts/</guid>
		<description><![CDATA[I bought a clock made from watch parts once, when I stayed in the Anjoa hotel in Leeds in 1991. The watch parts were arranged around the actual clock face i.e. decorative not functional. I think it cost me £35. The owner was selling them. These 16 motorbike models are also made from watch parts. [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Computer Element Made of Wood</title>
		<link>http://portent.org/computer-element-made-of-wood/</link>
		<comments>http://portent.org/computer-element-made-of-wood/#comments</comments>
		<pubDate>Mon, 10 Jan 2011 09:42:54 +0000</pubDate>
		<dc:creator>David</dc:creator>
				<category><![CDATA[art]]></category>
		<category><![CDATA[computing]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[lego]]></category>
		<category><![CDATA[video]]></category>

		<guid isPermaLink="false">http://portent.org/?p=245</guid>
		<description><![CDATA[This is quite clever. In all CPUs there are circuits for doing arithmetic. One is an adder. It er adds numbers. It works in binary (all ones and zeroes). If you add 1 to 1 you 10 (in binary- the equivalent of 2 in decimal). You can read more about adders on wikipedia. Matthias Wandell [...]]]></description>
		<wfw:commentRss>http://portent.org/computer-element-made-of-wood/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>DIY Flame Thrower</title>
		<link>http://portent.org/diy-flame-thrower/</link>
		<comments>http://portent.org/diy-flame-thrower/#comments</comments>
		<pubDate>Sat, 07 Aug 2010 04:36:53 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[bizarre]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[fun]]></category>
		<category><![CDATA[gadgets]]></category>
		<category><![CDATA[photos]]></category>
		<category><![CDATA[diy flame]]></category>
		<category><![CDATA[diy flame thrower]]></category>

		<guid isPermaLink="false">http://portent.org/index.php/2007/09/17/diy-flame-thrower/</guid>
		<description><![CDATA[This is almost certainly one that should be filed under the &#8220;Don&#8217;t try this at home&#8221; category. Mankind&#8217;s ingenuity has developed many different types of weapons of which one of the most nasty is a flame thrower. They have their uses- clearing bunkers and caves in wartime. Of course one of the things you don&#8217;t [...]]]></description>
		<wfw:commentRss>http://portent.org/diy-flame-thrower/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Fitting a Jet Engine to a C5!</title>
		<link>http://portent.org/fitting-a-jet-engine-to-a-c5/</link>
		<comments>http://portent.org/fitting-a-jet-engine-to-a-c5/#comments</comments>
		<pubDate>Wed, 14 Apr 2010 18:54:39 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[automobile]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[jet engine]]></category>
		<category><![CDATA[modifications]]></category>

		<guid isPermaLink="false">http://portent.org/?p=870</guid>
		<description><![CDATA[Imagine fitting jet turbine engines (small ones) to the likes of pickup trucks or Sinclair C5s. Ideal for racing boy racers off from traffic lights though somehow I cannot see these as being exactly road worthy. That&#8217;s what this website is about- with photos of descriptions. Fancy a turbo jet go-kart? There are also videos [...]]]></description>
		<wfw:commentRss>http://portent.org/fitting-a-jet-engine-to-a-c5/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>WII Bowling Lego Robot</title>
		<link>http://portent.org/wii-bowling-lego-robot/</link>
		<comments>http://portent.org/wii-bowling-lego-robot/#comments</comments>
		<pubDate>Tue, 17 Jul 2007 06:27:46 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[console]]></category>
		<category><![CDATA[engineering]]></category>
		<category><![CDATA[lego]]></category>
		<category><![CDATA[photos]]></category>
		<category><![CDATA[video]]></category>

		<guid isPermaLink="false">http://portent.org/index.php/2007/07/17/wii-bowling-lego-robot/</guid>
		<description><![CDATA[This is brilliant. Someone created a small robot- well more like a harness, for the Nintendo Wii bowling game using the Lego robotics system Lego Mindstorms. It moves the Wiimote absolutely perfectly so that it can score a perfect 100% (a 300 score!) on the game. It&#8217;s a heck of a way to cheat! You [...]]]></description>
		<wfw:commentRss>http://portent.org/wii-bowling-lego-robot/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>A Big Ship needs a Very Big Engine</title>
		<link>http://portent.org/a-big-ship-needs-a-very-big-engine/</link>
		<comments>http://portent.org/a-big-ship-needs-a-very-big-engine/#comments</comments>
		<pubDate>Fri, 01 Sep 2006 07:06:00 +0000</pubDate>
		<dc:creator>David</dc:creator>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[mechanical]]></category>
		<category><![CDATA[photos]]></category>

		<guid isPermaLink="false">http://portent.org/?p=742</guid>
		<description><![CDATA[And they don&#8217;t come any bigger than this awesome monstrosity that weighs 2300 for the 14 cylinder version. Sure it only does 102 RPM max, and yes it drinks fuel at an inordinate rate- but it does produce 108,920 hp. Yes that is a man standing between cylinders 4 and 5- this is a very [...]]]></description>
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