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Electric Fan

March 17th, 2008

 The mechanical fan in C30x’s is really loud.   Especially when cruising at 50+mph — and that’s when you don’t need the fan running at all.   I got a Flex-A-Lite 12V DC fan — It’s rated at 3000cfm.   I also got Flex-A-Lites variable speed controller.    This controller will run the fan at 60%-100% speed depending upon coolant temp.    It has a number of other cool features, such as soft start, variable temp threshold, and running for a brief period after the ignition is turned off.


The 3″ thick civilian radiator was pretty beaten up — various impacts had smashed the cooling fins.   Also some impact had split the welds on the frame.     It turns out that a cheap plastic scraper from Harbor Freight was the perfect tool to realign the cooling fins.


I had to fabricate and weld some brackets to the radiator to attach the fan.    The whole assembly barely fits after rerouting the air intake snorkel.   There really isn’t a lot of extra space in the front of the C30x.


I can’t test it out until I get the CV boot installed and the brakes fixed…

  1. Ryan Brown
    February 28th, 2012 at 19:55 | #1

    Hey, Wes! been following your build with rapt fascination. 😀

    Question about your flexalite fan – what size fan did you wind up going with, and how much did it drop the noise over the mechanical fan? I’m looking at doing the same thing with my C-304…

  2. wesc
    February 28th, 2012 at 20:13 | #2

    Hi Ryan, I forget which size fan. I think 16″ but that’s off the top of my head. It did dramatically reduce the noise in the cabin.

  3. Ryan Brown
    February 29th, 2012 at 13:24 | #3

    Awesome, thanks! Good luck with the rest of the build! 🙂

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