Problem with a Novak esc

[grimidol]

I have had it runing but the motor was making a noise like it was hitting some thing on the way round and getting really hot !!!!!!!
Any ideas ? im guessing it must be a motor problem not esc?

[_sleigh_]

Is it a new set-up or have you been running it a while?

[grimidol]

Second hand ..... ( as the guy said was working fine ) worked ok to start but the motor was hot after 5 seconds of running it seems like a short in the motor maybe ?

[Dazzler]

Is this installed in your car currently? or are you testing on the bench? If you are free reving the motor without load, eg - not in a car, you could well have caused some damage to the motor.

[_sleigh_]

Depending on the exact noise it's making, I'd focus on the motor. If you've got another then swapping this out will confirm this straight away.

If not, try this;

You will be able to rotate the motor shaft by hand and it will tend to stop in fixed locations (where the magnetic fields are equal, i think that's right) Well you should get able 5-6 of these postitions throughout a complete rotation.

For each of these postitions, try starting the motor from a standstill with a very small amount of power. If you get a position that doesn't allow the motor to start, then you could be looking at a dead sensor in the motor. I've had this before and it does cause a fair amount of heat when running and produces a knotchy/noisy feel to the motor.

I think I've explained that OK, if not let me know and I'll try again. :-)

[grimidol]

It is in the car but have taken it out to make sure the motor bolts are not touching and they are not moves free by hand so i would guess the moise is coming from inside ie top end

[_sleigh_]

Also going on that extra detail, it could be a collapsed bearing.

[grimidol]

now it is at the point where them otor doesnt want to turn stutters to move then stops and goes or doesnt move at all lol .... what fun .....

[Dazzler]

As an addition to what Phil has suggested, ensure that the sensor cable is plugged in properly, and early Novak motors (SS/Velocity) had sensor wires which were not easily replaced. Having used them in my touring car, I found them to be a little prone to damage - check them specifically where they exit the motor.

[grimidol]

http://www.jperkinsdistribution.co.u...catname=Motors & ESC
are these any good or ok ? will it work with any speed controler also lol like my one ...