Quote:
Originally Posted by 1502
They will be used for our cart to allow us switch between driving it and pushing it basically on the fly. We're using the pneumatic shifting method as we will have other pneumatic features on our cart. (it has mecanums) 
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For that, it should work fine. You could have a problem with using pneumatics because the system may not always be pressurized. Servos might work better because they would allow you to shift regardless of air pressure in the system, and shifting at seed will not be an issue. Just curious, will there be 2 cims per wheel? Because that would be pretty cool.