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Unread 27-07-2006, 10:08
lukevanoort lukevanoort is offline
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AKA: Luke Van Oort
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Join Date: Oct 2005
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Location: Waterloo, ON, Canada
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Re: pic: 114 2 speed Coaxial Crab Drive

I can't recommend idler sprockets enough, they're easy to work with, reduce your efficiency losses, and aren't too heavy. Here is a picture of our implementation of them on a u-bolt, this design can easily be mounted on some aluminum angle and can be used sideways (although the chain might be a bit more likely to fall off, but some sort of spacer on the u-bolt could solve that problem, if it occurs) a simple nut can adjust tension, or they can even be spring loaded, as I suggested here .
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