|
Re: Difference in forward/reverse drill motor speed
Posted by Patrick Dingle at 2/6/2001 3:04 PM EST
Other on team #639, Red B^2, from Ithaca High School and Cornell University.
In Reply to: Re: Difference in forward/reverse drill motor speed
Posted by Al Skierkiewicz on 2/6/2001 1:46 PM EST:
It has to be something with either the motor or the gearbox. When I noticed it, I was hooking up the battery directly to the motor. You can hear the difference (and measure it with proper equipment) in speeds from forward and reverse.
Patrick
: 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.
__________________
This message was archived from an earlier forum system. Some information may have been left out. Start new discussion in the current forums, and refer back to these threads when necessary.
|