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Unread 04-08-2015, 19:06
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Re: [FTC]: Drive Platform- Design Exercise

Quote:
Originally Posted by wgardner View Post
FYI, if you're considering this CAD model for use on a real robot, you might want to read some of the reviews on the Dremel angle drive complaining of lack of durability. It's probably made for high speed but not necessarily high torque. It would be a shame to buy 4 of them at $20 each, build a robot based on them, and then find that they break the first time your robot runs into a wall or another robot, stalling your motor.
Even if you solve the durability problem, the roller-on-roller transfer of energy from one axle to the other is not likely to transfer much torque (though it would be good for high-speed, low torque applications, like attaching to a dremel). With that device in your drivetrain on the wheel side of the gearbox, I doubt you would be able to get anywhere near stalling the motor; I'd be more worried about not getting enough traction to get the robot rolling at all. I don't know the contact force or coefficient of friction, so I can't even give a rough numerical estimate of the torque, but it's something else you should check before including it in your design.
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