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Originally Posted by mechanicalbrain
Yes thats exactly how it works. As to the retracting part. It would have to involve a mechanical function so i can keep the motors to a minimum. I want it to come around back so it can clear stairs and such objects. Finally, If I added wheels to the end of legs it would need to be some type of pulley system and then again I run into having more then two motors a leg.
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Finally getting around to answering this... You could obviate the need for tons of extra motors, pulleys, chains, flexible shafts, etc by going with a large, well designed leg, and then putting a motor/gear case/wheel assembly on the end of it. Using FIRST parts, it'd be some sort of sturdy leg system with a Nothin'-But-Dewalts motor assembly attached to a wheel at the end of the leg. There are trade-offs, obviously. This makes your leg much heavier. But on the plus side, electricity is an awful lot easier to bend around corners than mechanical rotation.