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Old Jun 19, 2013, 04:34 PM
gravity is optional
Joined Jun 2012
46 Posts
Help!
Motor cutting out on Super Cub LP

Ok, so I have a dilemma. The motor in my Super Cub LP keeps cutting out at random times. It especially happens when I go 3/4 throttle or above. I cannot think of what the problem could be!
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Old Jun 19, 2013, 04:46 PM
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United States, CA, Hayward
Joined Feb 2013
164 Posts
What size prop is on it, and what is the state of battery charge when it happens?
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Old Jun 19, 2013, 05:01 PM
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Joined Jun 2012
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It is using the stock prop, 9X6? It happens no matter how much the battery is charged, does it through the whole flight.
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Old Jun 19, 2013, 05:13 PM
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United States, CA, Hayward
Joined Feb 2013
164 Posts
Is the anti crash system still hooked up?
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Old Jun 19, 2013, 06:38 PM
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No, I have it turned off.
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Old Jun 19, 2013, 07:07 PM
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United States, NJ, Pennsville
Joined Feb 2008
506 Posts
Do you lose just motor or all control (servos)?
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Old Jun 19, 2013, 07:12 PM
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Joined Jun 2012
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I just lost the motor.
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Old Jun 19, 2013, 07:44 PM
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USA, CA, Oceanside
Joined Jul 2008
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They still use the garbage tamyia connectors on these? If so ditch it.
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Old Jun 21, 2013, 02:28 AM
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United States, CA, Hayward
Joined Feb 2013
164 Posts
No, it comes with an ec3. I am pretty sure this is an esc problem if you're sure the batteries are charged up.
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Old Jun 21, 2013, 06:48 AM
turn, turn, turn.
Athol, Massachusetts
Joined Oct 2005
10,234 Posts
you're probably reaching the automatic low voltage cutoff.

You can disable this feature in your ESC programming... Hopefully.
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Old Jun 21, 2013, 09:26 AM
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Evansville Dress Reg., Indiana, United States
Joined Jun 2004
1,060 Posts
Easy and quick check , use a different battery and see if it continues to act up .
Then replace the brushed motor with a new one , and if it still acts up , call HH for more help and replacement esc / receiver .
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Old Jun 21, 2013, 10:30 AM
turn, turn, turn.
Athol, Massachusetts
Joined Oct 2005
10,234 Posts
I always push my batteries, and I always have my low voltage cutoff disabled.
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Old Jun 21, 2013, 02:24 PM
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United States, AL, Tuscaloosa
Joined May 2013
37 Posts
Had the same problem on my SC LP

Mine turned out to be the battery. Specifically, it was a breaking solder joint in the EC3 connector. It only reared it's head at nearly full throttle and would cut the motor (note I had the floats and larger prop on at the time, too, so more draw). I noticed it when removing the battery (cable a bit loose and partially pulling away from the conenctor).

I put it on the bench & cut the cable down, got a new EC3 connector and re-soldered. Good as new and hasn't happened since.

I still don't have the experience to tell you exactly what happened electrically that would cause the motor to cut (yet the controls to retain functionality), but hopefully it's worth something - at least a battery check. Best of luck.

BamaWade
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