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Re: Gearing a Rotating Arm
Back in 2011 when we had a long arm, we used gas springs on moment arms to balance the weight of the arm. If you do it right, the arm will stay at any position you put it without having to stall the motor to hold it there. A sprocket or gear bolted directly to the arm, driven by a miniCIM in a 100:1 planetary with a decent secondary gear/sprocket reduction should get the job done.
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Design/fab team 2011-2013
Design/fab mentor 2014--
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