Quote:
Originally Posted by lutach
You demagnetized the rotor. Even though it still has some magnetism, it'll make your motor hot as it needs more current now to turn the rotor. I have a lot of demagnetized rotors that I sometime use to magnetize some tools I use. You I used the 31/69 combo to hit 65mph in my TC3 which has the same diff ratio? With the 17.5r you have no problem and you should be able to use the bigger pinions as the 17.5r will needs it to be fast.Keep in mind if your ESC shut down because the motor got too hot, then the rotor probably went above the 175-180F mark. Most temps taken from outside the can will not tell you how the temps were inside. Open your 13.5 and check the magnet wires to see if they look ok and if they do just buy a new rotor and don't use such a big pinion or small spur.
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what wires do you mean ?. What gear ratio & spur would you suggest for the 13.5 ?.