I gave my Money Motor a run this weekend in my sedan on a medium sized carpet track with foams. Heres what I found:
-First I noticed that there was a lot of arching on the comm by the positive brush. This was as I was breaking it in. I thought it was a bit much, but I wanted to run it as is first.
-My first run with the motor, I geared it at about 6.13, which is much more conservative than the 5.8 many people mentioned here. The thing was ballistic!!!
The top speed was a bit much for the track, but it was clearly a fast motor. The temp coming off the track was 140 degrees. Hotter than my C2 motors, but there seemed to be no ill effects
-After about 3-4 total runs, I wanted to open the motor up for the first time. First thing I noticed was that there were no balancing cuts on the arm, so I hope that just means I got a perfectly balanced one without the need for adjustment at the factory.
There was some burning on the comm, obviously from the arching I first saw when I broke in the motor. I cut the comm on my Cobra lathe and found that the comm wasn't cut perfectly flat from the factory.
-So I cut the comm and rebuilt it, broke it in again and gave the brushes a chance to reseat with the newly perfect comm. After that, the arching was gone.
-Motor was very smooth and the comm showed no more signs of burning.
*The higher running temp doesn't seem to have any effect on the performance, the motor didn't soften at all during the 5 min race.
*I expect that with rubber tires and on a more flowing track, the temps will drop a good 10 degrees at least. Carpet racinig (with the high traction and heavy throttle usage) is tough on motors.
*I'm very happy with the motor. I do plan on trying the Infinity brushes and maybe some different springs.
Very worth while purchase.