Brushless motor sounds strange, please help! - RC Groups
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Aug 06, 2005, 04:24 PM
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Brushless motor sounds strange, please help!


I have just bought a Nippy 1210/103 brushless motor, with a Align 20A esc and a 3 cells, 700mah LiPoly battery pack. The prop I have on is a gws 10x4,7. The problem is that when I pull the throttle more than half the way, the motor starts to sounds strange. It's sounds like something rattles, or braking or something like that, and the motor loses it's effect. What is that!? Can somebody help me and tell me what to do!?

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Aug 06, 2005, 04:31 PM
clumsy thumbs
shakysticks's Avatar
Is that ESC programmable? Maybe you need to advance/retard the timing.
Aug 06, 2005, 04:55 PM
Registered User
Yes, the ESC is programmable. You can set the timing in three steps. But I don't if I have set the timing right. The motor I have is a 12 pole outrunner, and in the ESC setup paper it says this;
1.Low timing - (apply to 2 pole inrunner motors)
2.Mid timing - (apply to 6 pole in/outrunner motors)
3.High timing - (apply to high power output)
Which one should I have? Right now I have the setup on step 3, High timing. And the motor sounds the way it does.

Aug 08, 2005, 01:06 PM
Registered User
mike50's Avatar
I had a motor that acted like that, it was due to a loose magnet. I glued the magnet back in place and no more rattle.


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