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Unread 06-01-2004, 22:49
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Re: It might bind the chain...

Quote:
Originally Posted by Joe Johnson
Is the forward red thing a spring loaded tensioner for the chain?

If so, I think you many need one on the back side also (for when the tension in the chain is on the front chain -- this would tend to pull the tensioner solid on the front side, leaving slack to cause issues elsewhere).
Yes, it is. Yes, it does. I didn't include the backmost tensioning mechanism because I was feeling too lazy to mirror the parts in this assembly. It's designed to accomodate a second tensioning mechanism, however.

Quote:
If not, I am thinking perhaps the shifter will bind during shifting, when the chain is routed over 2 drive spockets. This is especially a problem since the chain will not like to sit over the two sprockets because the they are spinning at different speeds.
That is a concern I share. The easiest solution seems to be avoiding shifting while the chain is moving.

Quote:
I am concerned about what keeps the two triangular carriers in line with eachother. Perhaps the carriers could be gears and a wide gear could keep them in phase by bridging both sides. Not a perfect solution, but I suppose it could work. Just a thought.
As good a thought as any, really. I hadn't considered that the carrier would twist under torque.

Thanks for the comments, Joe
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