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Unread 23-10-2005, 18:03
Rickertsen2 Rickertsen2 is offline
Umm Errr...
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Re: Victor 884 won't go forward

Quote:
Originally Posted by KenWittlief
when you spin a motor (backdrive it) it acts like a generator. We use to demo this with the globe motors and the old rotating lights - hooking them together, turning the globe motor with a wrench and the rotating light would lightup and spin

during an event when you let off the joystick, the motors back-feed, and depending on whether you have your victors set to coast or brake, the counter-EMF (generated voltage) from the motors will either be shorted through the victors to act like a brake, or it will be left open circuit and the bot will coast to a stop.

I dont think you can blow out your victors this way unless you were pushing the bot really fast, and the motors were generating a voltage above the Victors rated MAX voltage spec.
Reminds me of the day a couple years ago when we were dusting off our robot with compressed air and we realized that when spun by compressed air, the large kit fan produced enough voltage and current to power up the robot(but not to move anything other than pneumatics). I would not recommend doing this as very high voltages can be produced this way. The lil fans also make a whizzing noise when you blow air over them.... until they promptly die....
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