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Brushless motor won't spin

Old 07-17-2007, 05:58 PM
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Join Date: Sep 2006
Posts: 138
Default Brushless motor won't spin

I just purchased this esc and brushless motor combo.
I started everything up and turned the motor on it started spinning fine then all of a sudden i heard a loud grinding noise. I turned it off immediately. It happened again after i tried again. Now the motor won't turn at all it just studders back and forth a little! What could be wrong did i fry something? Also im using a 7.4 volt lipo to power it.
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Old 07-17-2007, 07:28 PM
Join Date: Jan 2007
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Default Call Jeff

You bought it from Heads Up Rc. The owner, Jeff, is a great guy and he stands behind his products. e-mail him or give him a call and I'm sure he will help you out.
Have you examined the motor closely? There may be something caught in it that is preventing it from turning. These are cheap motors and maybe a screw fell out and got lodged inside somehow. Small metal objects like screws are attracted by the strong magnets inside the motor and I have had some get caught in there while I was mounting the motors to the motor mount.
Take a magnifying glass and get a close look.
Good Luck,
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Old 07-17-2007, 08:26 PM
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OK i sent him an email. I checked everything closely and nothing seems to be jammed at all. The esc wont go through the normal start up sequence anymore but everything still has power.

EDIT: He has tested an esc and motor and is going to ship me out the new one and im shipping him back mine. He has amazing customer service!

Last edited by Pconn5; 07-18-2007 at 12:57 AM.
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Old 07-18-2007, 08:37 PM
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I have bought this same motor 3-4 times. I have used it on all my planes, save the new mini ultra stick I just got. My latest one has the sam problem you are describing! But, that esc has been through many crashes, and several planes......
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Old 07-18-2007, 10:01 PM
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I had something like this happen. Turned out that the little "C" clip that holds the shaft, came off, and the magnets sucked it inside the bell housing. Check in there.
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Old 07-18-2007, 10:04 PM
Some Assembly Required
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Location: Nashville, TN
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I also had a motor do that once. The thing just sat there and stuttered as you described. I reprogrammed the ESC and all was good.
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Old 07-20-2007, 11:26 AM
Sky Sharkster
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Default Check The Wires?

Hello Pconn5, I had a similar problem, turns out it was the wiring. Here's the thread;
Just another idea!
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Old 08-14-2007, 05:00 PM
Join Date: Jan 2007
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I had a problem with mine also, but I used ESC CC-10 with a home made CDrom motor. The motor could not keep up with the ESC, so it failed at high power climb during take off. This caused the airplane plunged into the lake. I took everything apart and used alcohol to dry them up, reprogrammed the ESC, and everthing went smooth except the lipo had to be replaced (old one died in the water).
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Old 08-19-2007, 10:46 PM
homo ludens modelisticus
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MDTV, it's the motor that 'tell's' the controller when to switch.

Vriendelijke groeten Ron
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Old 10-13-2007, 07:22 PM
fly it like you stole it.
Join Date: Oct 2007
Location: mankato mn.
Posts: 5

yep.......just yesterday my rimfire 1000 took a dump on me found out an hour later wire was on with one strand so i solderd it and works perfect now way down deep it was
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