[Dan_Karol]

cxcad,

This tensioning method relies on the clamping force (essentially friction) to hold the bearing block in place. Under load there is a high likelyhood of the bearing block slipping and relieving the tension on the chain. I would highly recommend looking into some sort of locking CAM mechanism to hold the block in place after it is tensioned.

There are many methods of tensioning drive systems in FRC that are very similar to this that you might be able to use for inspiration (look at some of the West Coast Drive white papers)

Looks like a good start,
-Dan