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› Best way to diagnose esc/motor overheating power loss?
12-30-2009 12:33 AM  7 years agoPost 1
RappyTappy

rrProfessor

North Denver, Colorado

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Today about 2 mins in on my L500 with orbit expert motor and jazz esc, power dropped off and when landing the esc felt hot and the motor felt warmer/hot than normal. What is the best way to diagnose whether its the motor or esc giving me trouble? Gives very good power and response until it overheats and then starts shutting down. Thanks for some tips.

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12-30-2009 12:43 AM  7 years agoPost 2
Heli 770

rrProfessor

USA.

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Switch out a good known motor or ESC.

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12-30-2009 02:15 AM  7 years agoPost 3
RappyTappy

rrProfessor

North Denver, Colorado

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That was pretty obvious to me, but unfortunately I don't have a spare motor or esc. Was hoping there was a way to pinpoint what it is before shelling out un-necessary dough on possibly a good motor or esc. Sucks cause it looks like it's going to kill my new years weekend flying.

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12-30-2009 02:26 AM  7 years agoPost 4
Heli 770

rrProfessor

USA.

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The only thing you could check is the motor resistance with the manufactures spec.

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12-30-2009 04:55 AM  7 years agoPost 5
Dr.Ben

rrMaster

Richmond, VA, USA

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Do you own a datalogger?

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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12-30-2009 05:24 AM  7 years agoPost 6
RappyTappy

rrProfessor

North Denver, Colorado

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I don't, but wish I did now at least the problem still wouldn't be a mystery. Both the motor, speed control, and batt have never even been hot after doing near full throttle hard 3D flights and it just happened one flight from the next.

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12-30-2009 05:40 AM  7 years agoPost 7
Dr.Ben

rrMaster

Richmond, VA, USA

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I suppose if I were going to flip a coin, I'd look at the motor first. ESC's are sorta like being pregnant (no in between). Either they're OK or more or less dead.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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12-30-2009 03:37 PM  7 years agoPost 8
RappyTappy

rrProfessor

North Denver, Colorado

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Thats what I'm assuming is that maybe the motor is going bad and drawing excessive current and the speed control heats up and starts to reduce power. Thanks for some insight and a sorta reassurance of what I was kinda thinking.

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12-30-2009 04:34 PM  7 years agoPost 9
clayboy

rrApprentice

phuket thailand

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a guy at my field had the same symptom , for him it was the middle heat sink plate stand offs had collapsed .. maybe it could be worth to take the heat shrink off and have a look.he just put some packers in and then it worked perfect again

i started with nothing and still got most of it left

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12-30-2009 05:08 PM  7 years agoPost 10
RappyTappy

rrProfessor

North Denver, Colorado

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cool, thanks for the tip, I'll take a look at that too.

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