#21
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Why 52-42-30?
I forgot that the rings will be out of phase most of the time anyway.
You can't drop a roller where you want it, unless you always shift at the same spots, or the pins catch and bend the chain the right way... Both of which I think might be possible (I think force of habit can "find" the right spot, and computer design can set the pins optimally). JG |
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