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Old 09-26-2005, 06:48 PM   #1
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Default ESC FRIED, please help me figure this out!

Ok guys I am trying to help out a buddy. He bought a brand new XXX-S Losi onroad electric RTR. The only thing he has done is put a set of 3800 integy mathced packs in the car. still using all the stock electronics ESC etc. Last night he was running the car and it ran great for 30 min or so. He then recharged the battery and tried runnig it again. The car started to smoke and it completly melted all his wires and FRIED his ESC. Any ideas anyone has would be great thanks a lot
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Old 09-26-2005, 06:58 PM   #2
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It might sound stupid, but many of us have done it. Did he connect the wires backwards? Reversing the polarity on many speed controls has a very bad smelling effect. Just one idea.
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Old 09-26-2005, 07:13 PM   #3
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Not sure I will have to ask him, we are tying to find any and all causes so please keep the ideas rolling in. Can the stock ESC handle the 3800's?


Chris
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Old 09-26-2005, 07:14 PM   #4
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how long a break in b/w? if the ESC (not sure what type of esc is on that rtr) is not well made, and hasn't had enough to cool, excessive use can cause it to burn out... this is assuming all the wiring and polarity is correct.
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Old 09-26-2005, 07:15 PM   #5
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I have seen this happen a couple of times with the XXX-T RTR,
i think it is the same speed control in the xxx-s
call losi For Electronics suport 1-877-504-0233
they will help you.
and change your plugs to a high amp plugs like deans or powerpole,
when you get the replacment,
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Old 09-26-2005, 07:18 PM   #6
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YEAH SAME THING HAPPEND to me. My car can handle like up to a 18 t> but i ran like 2 packs of 2400 and the wires were to thin and the plugs had so much resistence the wires got to hot and melted together
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Old 09-26-2005, 07:21 PM   #7
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if you have a deans plug on the motor, for quick changes of motors......

this will fry the esc... i know coz i done it...

connected the Battery to the Motor on the ESC and

connected the Motor to the battery on the ESC


to prevent this you have to put the male deans plug on the motor
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Old 09-26-2005, 07:25 PM   #8
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if it is new and he has a receipt, i would call losi. you may have to send it in for repair but its cheaper than buying new electronics.
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Old 09-26-2005, 07:25 PM   #9
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Quote:
Originally Posted by qwerty
if you have a deans plug on the motor, for quick changes of motors......

this will fry the esc... i know coz i done it...

connected the Battery to the Motor on the ESC and

connected the Motor to the battery on the ESC


to prevent this you have to put the male deans plug on the motor
Not to sure what you mean could you explain it a bit more?


Thanks
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Old 09-26-2005, 07:27 PM   #10
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Quote:
Originally Posted by DR.FeelGood
Not to sure what you mean could you explain it a bit more?


Thanks
well battery goes to battery on the esc , and motor goes to motor on the esc...

if you cross them around then.... u get the idea
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Old 09-26-2005, 07:30 PM   #11
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I know what you mean however the truck was a RTR and everything was hooked up from the factory, all he did was add a matched pack.
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Old 09-26-2005, 08:28 PM   #12
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Old 09-26-2005, 08:29 PM   #13
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I think it got a little HOT!




After further inspection we might have found the pos and neg wire to the motor may have shorted out!

Chris
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Old 09-26-2005, 08:53 PM   #14
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if everything is original, i would send it back for warranty. you may want to send losi the pic.
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Old 09-26-2005, 08:58 PM   #15
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Wauu.... I've smoked about 3 ESC thoughout my 7 yrs of RC...But I've never seen something this bad.

I think the ESC only can take high turn mods at best.And the plugs and wires has prob too high a IR rating and too much heat is created by the 30 min run,which is a little too long for my liking too.And I assume that your friend having let the electronics cool down and immediately slap on a fresh pack and go bash again.

The poor little thing didn't have a chance to cool and the heat finally melt every component in there...

I think your friend should invest in a good no limit ESC.Worth every penny...
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