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Old 07-02-2013, 05:05 PM   #1
Quarry Creeper
 
Join Date: Jan 2010
Location: Lunenburg
Posts: 349
Default Hot caps and brownout.

Today I pulled a Castle 3800 4 Pole and BH LT4 120 amp ESC out of my FOFF so I could test out a KOH buggy I'm working on. The system was working fine and never overheated or had any other problems. Always ran on 3s.

In the KOH, after about 1 minute the throttle cut out but steering still worked. I reset the ESC and got another minute out of it before the same thing happened again. I noticed the ESC was pretty hot, but the caps were cooking.

I'm wondering if the servo is too much for the internal BEC or if there might be another problem. I do plan on a Castle BEC but just wanted to try out the KOH for bugs. The servo is a Hitec 7954SH. Also have a Hitec MG85 for shifting but I never used it.

Could this be a simple BEC fix or do I have other problems?
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Old 07-02-2013, 05:13 PM   #2
I wanna be Dave
 
Join Date: Aug 2007
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Posts: 2,274
Default Re: Hot caps and brownout.

It's going into thermal protection because the motor load is too great.

Check your gearing and drop a tooth or two on your pinion.
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Old 07-02-2013, 05:23 PM   #3
Quarry Creeper
 
Join Date: Jan 2010
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It's possible to thermal that fast? Like I said, it only ran for a minute or so.
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