by Audi1 » Fri Feb 27, 2015 5:26 am
A 3 Volt break-in should never be enough to damage a motor. After running-in my motors for 3-5 minutes at a 3V-12V ramp; in order to sort out the good ones from the not-so-good ones, I routinely run them in again at: 3V - 20 min, 4.5V 0- 20 min, 6.0V - 20 minutes, 7.5V - 5 min, 9V - 5 min, and 12V - 5 minutes. I've never seen a motor overheat using this sequence.
One thing that you may want to check is the amps that you're feeding into the motor from your power supply. High amps are more apt to burn out a motor than high volts. I would not go over 5 amps in breaking in a motor. Most motors in race form, on the track will draw less that one amp. So, check your amps.
Some of the mag racers that I know will run their track voltages up to 14V. After a long heat, you can usually smell some of the motors, but I haven't seen one burn out at these voltages, unless the magnet drag was just too much for the motor.
Who said magnuts....................??
And, yes, IMO you can't do better than SCC for products, customer service and slot car knowledge.
Allan