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Re: Chain Tensioners
For our robot, we used 2 different sized hole saws - the larger diameter circle for the 2 outside pieces, and a smaller diameter circle goes in the middle to make the "groove." We bolt them directly to the frame. They don't have to turn, the chain will just wear against the wood.
We did consider cutting a slot in our frame so that the tensioners could be adjusted, but we deemed it unnecessary.
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