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	<title>1994 US Electricar Repair Blog by Mike</title>
	<link>http://rotordesign.com/blog</link>
	<description>Preserving, Repairing, and Advancing US Electricar Vehicles</description>
	<lastBuildDate>Mon, 08 Mar 2010 18:33:28 +0000</lastBuildDate>
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	<item>
		<title>Saved!</title>
		<description><![CDATA[After delivering several more boards it was time to assemble my system. I turned the key and as soon as the ready light comes on there was a gun like pop! I had forgotten to connect the igbt driver cables. At least the main board was not affected. All 3 igbt&#8217;s are shorted. I am [...]]]></description>
		<link>http://rotordesign.com/blog/saved/</link>
			</item>
	<item>
		<title>2 more!</title>
		<description><![CDATA[The #2 and #3 main boards that have received the Classic Dropout mod shipped today. They work very well compared to when I first got them running. What a thrill to finally see such great success with a problem that plagued these vehicles for years.
]]></description>
		<link>http://rotordesign.com/blog/2-more/</link>
			</item>
	<item>
		<title>Spot Welder update</title>
		<description><![CDATA[Fritz put up his fet board for sale today. It&#8217;s a beauty! It&#8217;s made from 3 oz copper. It should handle the current spikes nicely. I have to decide to either have Shawn make me one of his chassis for the welder or just use a short PC tower that are super cheap but probably [...]]]></description>
		<link>http://rotordesign.com/blog/spot-welder-update/</link>
			</item>
	<item>
		<title>CNC smoked.</title>
		<description><![CDATA[Today I wanted to see if I could devise a way to use my 3 axis cnc to wind 41ga wire onto the current transformers from the Dolphin charger. They tend to fail if the fets go up in smoke. So there are better grades of fets that have helped the chargers live well. But [...]]]></description>
		<link>http://rotordesign.com/blog/cnc-smoked/</link>
			</item>
	<item>
		<title>Spot Welder Project</title>
		<description><![CDATA[Along with several others I&#8217;m on a spot welder project. This will be the tool I need to spot weld A123 cells together to make a nicad replacement module for my truck. I was in Merced a few weeks ago and got the chance to meet Fritz. Here is a video of the spot welder [...]]]></description>
		<link>http://rotordesign.com/blog/spot-welder-project/</link>
			</item>
	<item>
		<title>First Classic Dropout mod shipped!!</title>
		<description><![CDATA[The first main board with the Classic Dropout mod shipped today!! Two more have
been modified and are ready to ship as well.
 
]]></description>
		<link>http://rotordesign.com/blog/first-classic-dropout-mod-shipped/</link>
			</item>
	<item>
		<title>Dolphin cooling plate pressure test</title>
		<description><![CDATA[The Dolphin passed a 17psi coolant system pressure test in the truck today.
It&#8217;s running very nicely now. Since I have to spend to much time under the hood I
added a toggle switch to the power steering pump relay. Man it&#8217;s a lot quieter
in the garage!
So now it&#8217;s time to test drive this 1 of the [...]]]></description>
		<link>http://rotordesign.com/blog/dolphin-cooling-plate-pressure-test/</link>
			</item>
	<item>
		<title>Dolphin repair wonderland!</title>
		<description><![CDATA[Some wonderful people sent me a pair of Dolphins to repair. Someone before them
had been into both of them deeply and did some serious damage. Pins were not put
back into connectors properly. The fets on the charger board were not even
parallel to the base plate. Both main boards and chargers were toasted. Even the
GFI hardware [...]]]></description>
		<link>http://rotordesign.com/blog/dolphin-repair-wonderland/</link>
			</item>
	<item>
		<title>Better Charger fets and diode, transformer rewinding</title>
		<description><![CDATA[Better charger fets were ordered today. The wattage rating is double that of the original fets. The rds of the IXFH44N50P-ND is .140 ohms. Rds on a IXYS IXFH26N50Q-ND is 0.20 ohm vs 0.25 on the original IXFH21N50.
The original MR826 charger diodes are too hard to get. So I found an equivalent at Mouser. 625-GI828-E3, [...]]]></description>
		<link>http://rotordesign.com/blog/better-charger-fets-and-diode-transformer/</link>
			</item>
	<item>
		<title>Water Pump Brushes 10k+ mile update</title>
		<description><![CDATA[Since I am swapping around complete Dolphin systems for testing, it made it very
easy to reach down and pull out a water pump brush. Was I surprised. The brush
still had about 85% of it&#8217;s length left after over 10k miles were put on it. The
originals only lasted a total of 10500 miles! What an improvement! [...]]]></description>
		<link>http://rotordesign.com/blog/water-pump-brushes-10k-mile-update/</link>
			</item>
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