Quote:
Originally posted by Capt.ArD
ok viperdout, i see what you mean, but i dont think you are saying it correctly. Are you sure it's centifugal force that moves the pully? centifugal force moves rotating objects away from the axis of rotation, you need something to move objects along the axis. see what i mean? maybe i just don't follow your explaination, but it seems you got your physic mixed up a bit...
good idea tho.
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That's what I said. The pinion on the motor moves away from the motor, increasing the ratio. The belt would have to be stretchy, and the springs would be soft, but strong enough to pul it back. You'd be surprised how much force a pinion can build up. The idea of the cone forces the belt to stretch. a very wide rubber band could be used as the belt.