Originally Posted by 16skyline
Does any one cut there brushes on the trailing and leading edges. Do you get better performance when doing this, also which way do you cut them.( for example positive side cut on trailing or leading edge)?
If you remove material from the trailing edge of each brush, (similar to a "timed" cut) torque and rpm increases, which increases watts, (electrical horsepower.)
If you remove material from the leading edge, torque increases, and amp draw and rpm decreases. If you increase torque to a greater degree than you decrease RPM, your overall watts will increase.
You can gain performance by utilizing the above information. I'd suggest keeping the brush faces symetrical, ie: keep the brush cuts/widths the same for both poles.