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General Info for Radio Controlled Motors
General Information About RC Motors
The single most important thing about motors is that cleaning is the priority. The best way to improve the performance of a motor is to keep it CLEAN. It does not mean to spray it out once a month with motor spray, instead an absolute cleaning is very important. If you are a serious racer cleaning motors means extra and free horsepower for the engine. This is because it gives proper inflow of fuel and prevents and contaminants or foreign bodies from hurting the machine. Cleaning of all components is an important aspect. It is very important to clean the brushes and the commutator since this is where the power is applied. Any drop in the resistance of the connection from the brushes to the commutator will be rewarded with either an increase in power or efficiency, or BOTH! Allowing brush dust to accumulate on the brushes and the com will add resistance to the connection of the batteries to the motor. As the resistance of that connection is increased, performance is decreased because some of the battery power is converted to what is called ‘Isquared- R losses’. This results in heat being produced at the brush connection instead of power being transferred to the com.
The best way to keep brushes and com clean, without cutting them, is the little shaped eraser-looking products from RPM. Use one on both the brushes and the com between runs. This keeps the motor ‘fresher’ between visits to the com lathe. There is not any real marked difference between the yellow one and the black one, they both seem to do the same thing equally well. Another way to keep peak performance is to be sure that the com is true. This is accomplished by regularly cutting the motor on a com lathe. Doing it about every 5-10 runs may seem excessive but doing it so often, you will only end up taking .001-.002 from the surface. Since taking such a small cut, the motor can be re-trued upwards of 25 times. Springs are yet another way to alter the performance of a motor. In 4- cell 1/12th scale, it is best to run LIGHT springs. Run a Trinity gold on the ‘+’ and a Trinity silver on the ‘-’. This has proven, after what seems like months on the dyno, to be the best combination for 1/12th scale STOCK racing. 4-cell mod follows basically the same rules of thumb for springs, but the timing needs to be adjusted for maximum efficiency as well to take full advantage of what the motor can do.
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Contributor's Note
This intel reflects only one of my activities. I also write about and/or have websites on Vespa Scooters, Lambretta Scooters, Hardy Banana plants, Medical memorabilia, reborn baby dolls and much more. Hope you enjoyed the read, Philip Davey
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The copyright for this content entitled "General Info for Radio Controlled Motors" has been specified by the contributor as:
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This content may not be copied, distributed or adapted by anyone under any circumstances.
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This intel was contributed by Phildave
Phildave
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May, 2012
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