I was running a Checkpoint 19T in a BMI DB12RR. The best performance I got was with the high silver content brush on the positive side and the
Atlas brush on the negative, medium springs and no shims to preload the brushes. I cut the comm and do a 90sec at 3v breakin of the brushes. It seems to get better as the race day goes on so I only cut the comm once before I get to the track as part of my weekly maintenance. The only maintenance I do is cutting the comm and lubing the bearings after a race day. I would use a little Locktite on the screws that hold the endbell on. The gearing that produced 170 degrees(88/33) after an 8 minute run was the sweet spot for my motor.
Originally Posted by jdeadman
Sorry I should have mentioned that. I have it in a CRC 3.2R with Gen X Front end. Novak GTX ESC and 4000 mAh batteries 4 Cell pack