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Old 04-16-2009, 11:09 AM   #9
SkurdalenFox
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Join Date: Sep 2005
Location: Boulder, CO
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http://en.wikipedia.org/wiki/Fan_clutch

As for the mounting brackets, there are a number of things you can do. You could just get some bar stock, and bend up some brackets. You just need to make sure the fan assembly is held tightly against the radiator, and that there is no interference. The assembly shouldn't allow too much air to leak out the sides.

I just made two big hook type things for the bottom mounts. The fan just sets on them, and they have a hook to keep the fan moving back. At the top I just made two little right angle brackets with holes. The angle pieces bolt to the top of the radiator (there is a little flange with holes) and I drilled a couple holes in the fan shroud.

Alternatively, there are these zip-tie like things out there. They are square with a long zip tie thing. You put it ziptie part through the radiator. Drill a whole in the shroud and then use a retaining clip to hold it snugly together. They seem to work just fine
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