Old School machining question

[Conor Ryan]

Originally Posted by team222badbrad

Maybe it has something to do with the way the belts are set up?

no it couldn't really be the belts, unless they have rather unique grooves. Take for example, last year's CIM motor, ever run it in reverse? If you did you'd notice there was a rather large change in RPMs. This is caused by the motor brushes most the time. What happens is that the brushes are pushed into an offset position and peak performance doesn't occur when the current is simply reversed.

My one solution to improve performance besides getting a new motor, is to possibly add another gear somewhere to reverse the direction of the spin with out changing the current input into the motor.
------edit------
I guess I kind of worded it wrong earlier, to make my point a little clearer:
1.) Nothing is wrong with the Mill at all, its the motor
2.) The problem with motor is quite simple, first I'd reconmend reading this to understand how a motor works, or you'd probably have no clue what i'm talking about.
3.) What is happening is that the brush is being pushed offset by the direction of the current and by being pushed offset its no long running at the optimised speed. Read this for a more detailed explaination.