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Re: Motor for arm: what should be used when?
We have two window motors hooked up to a 20:3 (~7:1) gear ratio to a 40" upper arm, on which is attached another window motor hooked up by timing belt ~3:1 to a 33" lower arm with a pneumatic claw attached to the end adding length and weight. We never had any problems with our arm lifting, but we have four strands of surgical tubing just in case.
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Prototypes ARE the final product.
Last edited by Kyoshirin : 09-03-2011 at 14:23.
Reason: Had the gear ratios backwards and had wrong arm measurements.
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