Originally Posted by bernyberns
i was driving the other night and everything was fine until my car all of a sudden started to trip out and stall. i turned off everything and my motor was hotter then usual. i stopped racing after that. but ever since my motor gets extremely hot within like 3 minutes and it has this weird smell coming from the motor.
it still runs like normal. but the smell and the temp is worring me.. think its time for a new motor?
It is hard to tell with the limited information given. It is important to know what the motor is in, the setup etc.
General thoughts. If you just put this motor in a car chances are it is not geared right. In general a 5700 Kv motor will need a lower gear ratio than the stock motor it replaced. Go down at least a couple of teeth on the pinion to begin with. You should have a temp gage, the Ofan one is great. Donot run more than 155 to 175 degrees. Check all parts of the motor till you find the hotspot. If you are running the motor in a car with a slipper clutch make sure it's not slipping too much.
My last assumption is that you are not running a Lipo that is beyond the capabilities of the motor esc combo. I think the 5700 Castle will do a 3S lipo and no more, but check that.
If it had always been running well and this is a new problem and you didn't change anything then the motor is probably going bad. Using the instructions, check the input voltage to the motor to make sure that the ESC has not gone bad.
Beyond that contact Castle Creations.
Depending on your car there are forums that have more specific recommendations about gearing, but you will notice that with a smaller pinion and or a bigger spur the engine temps should come down.
Hope all this helps
Hope this helps