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T-REX 550 › Power Cutting out in an on/off fashion after a​mild crash
12-18-2011 08:21 PM  5 years agoPost 1
rudyy

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E. Amherst, NY

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I am doing a rainbow too low and the blades hit the ground. Fortunately, I am just in time to recover it before letting the heli eating the dirt, and I auto and land it safely. The heli remains intact including the blades, and the only damage is just the stripped main gear.

Today I fly again, but the motor gives me a problem. As soon as I apply throttle, the motor power is cutting out in an on and off fashion like a sine wave. I think I may have a slippery pinion, but it is not the case.

So, what could be the problem then? Do I wreck the motor or the esc? Any suggestion how to diagnose this problem?

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12-18-2011 08:33 PM  5 years agoPost 2
BladeStrikes

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Shelby TWP,Mi

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Pull on all the solder joint's real good and check all connectors .It could also be the pinion like you said.
My 700E pinion was bad like that.Headspeed and all was good but as soon as I smacked the throttle,it felt like the motor lost power.Take the oneway sleeve out of the oneway and clean it with VERY fine sand paper..I did that with mine and it worked perfect after..

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12-18-2011 09:50 PM  5 years agoPost 3
rudyy

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E. Amherst, NY

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Update

Problem solved. It is caused by the loosening esc lead wire to the rx, giving intermittent signal. Thanks God it is not completely loosened in mid air.

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T-REX 550 › Power Cutting out in an on/off fashion after a​mild crash
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