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cheapo esc went up in smoke, motor issues found, but were they the problem.
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junkman
RC-Monster Carbon Fiber
 
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cheapo esc went up in smoke, motor issues found, but were they the problem. - 06.14.2008, 10:43 PM

Well, the little ebay 60 amp esc went up in smoke. Here is the rundown, losi xxxt, 3s 4000mah, hobby city L can 380, 4800kv. I have ran probably 8 packs through the truck, pretty much a rocket, the esc has gotten really hot, but never shut down, or acted like it was having a problem. The last pack, about 2 min into the run, started cogging really bad, wouldn't move, started smoking. I took off running to it, smoke was rolling out of the controller. I uplugged the batt. Nothing had really changed, took a closer look at things tonight, first off the front plate of the can was loose, second off, where the motor wires exit the can, there is a some shrink wrap over all the wires, I slid the shrink wrap back, and the wires look to all be bare, and touching. Now I don't really know how a brushless motor works, but I wouldn't think it should be like that. At first I figured that was the problem, I took a ohm meter and measured for continuity between the leads, and they all did. I tried every other brushless motor I had, and they all do to, so I guess that may not be the problem. I hate to try the motor on another contoller, in fear of frying it too. I find it odd though that the cheapo esc had been doing just fine and then took a dump with no real warning. Would the loose front plate cause some kind of a short? Thanks for any help. Here is some pics of what I am talking about, and the inners if you are curious.



   
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