I recently bought a St Model Acrobat (3d) at a fly in awhile back. I did fly it and went out a ways like with any model I have and it had a signal failure and yes it went down. No damage other then dirt in cowl and all up front. I cleaned it out and all seemed to be good, but now I don't have enough power to even get off the ground. My question is, would the motor be bad cause the may be dirt in it or would the ESC be bad? This is a 4s 2200 plane. I have used 2200 and 2500. One the first flight it took off with no problem. I did put another receiver in and all control surfaces work flawless.
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Possible that there is an ESC issue and its likely you have one you could swap in to test.
Its also possible there's dirt in the motor bearings.
I'd be more inclined to think ESC, since you may have had an ESC shut-down causing the loss of control.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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The ESC didn't shut down. I lost total control of it in flight. Nothing would work when it went down. All control surfaces work now flawless. When I throttling up it goes up pretty quick on response just the power isn't there. No I don't have a spare ESC. I guess that's one spare thing I need to stock in the box. It may be the bearings in the motor.Still Learning:D
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Not a great idea to spray the motor with oil. that is essentially a dirt magnet that makes the dirt into oil-mud.
Try an electronics cleaner spray that evaporates completely.
We used to use Freon. That's illegal now.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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Originally posted by fhhuber View PostNot a great idea to spray the motor with oil. that is essentially a dirt magnet that makes the dirt into oil-mud.
Try an electronics cleaner spray that evaporates completely.
We used to use Freon. That's illegal now.Still Learning:D
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If it wasn't an ESC failure that caused loss of RX power... then you also need to find out why you lost control.
There are 3 ways an ESC typically responds to overheating:
#1: It burns out. (if there is no thermal protection)
#2: Thermal protection shuts down the motor side only
#3: Thermal protection shuts it down completely, motor side and BEC.
Better ESCs will use #2,since killing throttle should reduce ability to load the servos via high G aerobatics, so the BEC side SHOULD see less load and cool down. This is usually a longer motor shut-down than LVC and might take a few tries of lowering throttle before you can get power back.
It means... land now (like LVC does) and you have a problem that needs fixing, not just a battery that needs recharge.
Some do use #3 and there are still some with no thermal protection.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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