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Old 06-07-2012, 08:18 PM   #202 (permalink)
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The side doors could be opened and closed by a motor driving a rack and pinion actuator. This could be powered by either an air or electric motor controlled by a three position switch. A traditional center stand for parking would require most of the force to be applied in the last 20 degrees of rotation. The big question is when do you want your feet to be inside the frame. Poke around some old car window crank systems.
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