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WL-915 ESC Started smoking

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WL-915 ESC Started smoking

Old 05-07-2020, 09:04 AM
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Syden
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Question WL-915 ESC Started smoking

Hello,
Recently I bought a RC electric boat from WLToys WL915. Since I bought the boat it worked all fine and all parts are original from the factory. Today I took my boat for a quick ride and pluged the battery, but as I pluged the battery the ESC started to beep like crazy and after 2 seconds it smoked and I directly unpluged it. I'm totally new to the RC electric boat world so I have no idea what can cause such a thing, since everything is original. I wander if any of you have an idea of what might have happened so I don't repeate my mistake (if there is one). Thank You.
Old 05-08-2020, 12:59 AM
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mfr02
 
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If the ESC has been hot enough to smoke, there is a good chance that it is now a paperweight.
The usual cause is too high a load - with the power off, the prop should be able to be turned easily. Although it beeped and smoked before it had time to do anything, it might have had a problem at the end of the previous session.
With any brushless setup, the motor and ESC can only be tested together as they are two parts of the same thing. A replacement ESC should also have a replacement motor, the last thing you need is to have the motor break the new ESC.
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Syden (05-08-2020)
Old 05-08-2020, 01:44 AM
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Syden
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If it can be from the previous session than I think that might be the case. 4 hours before I cleaned the shaft, after the assembly I took it for a ride and I noticed loud noices from the shaft, so I took the boat home re calibrated and also oiled to make shaft run smoother. After I was sure everything was clean and smooth I took it to a short ride again and I turned on the controller and as I pluged the battery it beeped unusually and after 2 seconds it started to smoke. I hope if I replace the ESC it doesn't smokes again, since it's a stock model the transmitter and the ESC are combined together and makes the part expensive. I hope the only problem is the last session.
Old 05-08-2020, 07:14 AM
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mfr02
 
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Hopefully any problems in the motor and drive have been fixed. The big problem with brushless is that you can not test the individual parts separately. A faulty motor (there might be cooked windings in there) could take out the new ESC. Probably why I prefer brushed motors - you can test them with just a battery.
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Syden (05-09-2020)
Old 05-09-2020, 01:10 AM
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Syden
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Yeah, It's a shame to put also the new ESC to risk but I guess that's what RC is about . I'll look forward for the new ESC. I actuallly want to order a normal ESC and a seperate controller with the receiver (since mine is all together) but since I don't have enough place in the boat and knowledge I don't know how to make them fully waterproof. I will also post pictures so you get a better idea.

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