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Unread 24-06-2002, 00:20
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#0047 (ChiefDelphi)
 
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Re: Difference in forward/reverse drill motor speed

Posted by Al Skierkiewicz at 2/6/2001 1:46 PM EST


Engineer on team #111, Wildstang, from Wheeling High & Rolling Meadows High and Motorola.


In Reply to: Difference in forward/reverse drill motor speed
Posted by Patrick Dingle on 2/5/2001 11:38 PM EST:



I am having a tough time with this one. I have not heard that there is a difference between forward and reverse. (although I'm old and miss a lot.) The motors are electrically identical in either direction, the transmission is the same, the output shaft is the same and the speed controller is the same. That leaves only two places outside of drive train for the anamoly to occur. 1. The joystick pot is not symetrical (but this should be corrected in the calibration of the speed controller) or 2. the full data is not being sent to the controller (software correctable.) We had a problem a few years ago until we realized that the controller calibrates itself (stores the full swing data points) only when you release the button. I will have to check with Raul on more info on this.


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