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Gravity Wheel Ideas & Suggestions

This one, using ‘hanging pendulem weights’ might work better if there was a ‘ramp’ along the bottom third to direct the weights from the outer to the inner radius.

The problems with wheels like these (which use rolling weights) are:
1. (As far as I know) any wheel that uses gravity to move the weights will always move the weights too late to optimize torque on the wheel.
2. (In most cases) weights that move with gravity are subject to being neutralized by centrifugal force… If the wheel was ever to speed up the weights would not ‘roll’ to the inner radius…

Then there are the people who fool themselves with levers:

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