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Old 02-13-2003, 11:35 PM   #1
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Posts: 237
Default Motor Question

How do I know when i need a new motor. What should i look for. Right now the motor gets hotter than it normally wood under normal racing conditions. Also the brushes have little dark pits in them. The com kinda looks like this )( and also the performance is down. Also is that little metal thing between the magnets in the can and endbell suppose to be bent like this _/. Do i need a new engine or am i doing something wrong. Please help???
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Old 02-13-2003, 11:51 PM   #2
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Location: Greeley, CO
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For now, I would get a new motor. I'd suggest a Trinity P2K or a Reedy MVP. For future reference, do the following on your motors in the future:

1. Cut the comm every 5 runs. If you don't have a lathe, your LHS or a racing buddy can do it for you.

2. Change the brushes when they are severely discolored, pitted, or otherwise just plain look bad.

3. Don't over or under gear. If the motor gets hot quickly or the comm turns orange, red, or purple, you are geared incorrectly.

4. Make sure everything is clean. EVERYTIME you run your motor you should spray it out with motor spray.

Hope this helps.
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Old 02-14-2003, 12:13 AM   #3
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should i invest in a comm cutter?? i don't think my lhs has one and i don't know of any racers with one
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Old 02-14-2003, 08:28 AM   #4
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If you race a lot, a comm cutter is a great investment. It will easily triple the life of a motor.

As a motor wears, the comm will get grooves and go out of round. By cutting the comm, you are basically giving the motor a new comm. As long as the motor has not been heated to the point of melting the insulation on the winds, it will be as good as new after cutting.
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