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Old Aug 11, 2013, 09:15 PM
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InvalidUsername's Avatar
Australia, VIC, Melbourne
Joined Jan 2005
358 Posts
Motor squeal issue *Solved*

I have a HK YEP 30A esc, controlling a 2830-1130kv motor. Going just past half throttle causes the motor to suddenly jerk and then omit a rough sounding squeal. As that happens it also has a reduction in power, I've tried swapping motors, same problem, so it has to be ESC related?
I've tried all different timing percentages and frequency settings but to no avail

Anyone know of a cure or had any experience with this type of esc?
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Last edited by InvalidUsername; Aug 12, 2013 at 09:29 PM.
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Old Aug 11, 2013, 10:07 PM
High on Nitro, Lithium and Air
Joe Blow's Avatar
Joined Jul 2011
77 Posts
I've have the same problem on two different models , changing the ESC timing from low (default setting it came with) to medium completely cured it (using program card).
The sound can be very similar to a dry bearing squeal but with a electronic tone to it.

EDIT: my ESCs was Turnigy plush and only did it on quick accelerations from low to high, so may or may not be the same problem.
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Last edited by Joe Blow; Aug 11, 2013 at 11:01 PM. Reason: More info
Old Aug 11, 2013, 10:18 PM
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cynr100's Avatar
Australia, QLD, Cairns
Joined Sep 2012
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Also check that you do not have it in any form of Governor Mode.
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Old Aug 12, 2013, 01:58 AM
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Australia, NSW, Picnic Point
Joined Aug 2011
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I had the same issue with my motors in my Phoenix2000 and nothing but changing the ESC could fix it. I think you'll need to bite the bullet and get a new one.
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