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Thread: Well, I hope I didn't fry the ESC...

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Old 05-17-2019, 10:57 AM   #1
mtm
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Default Well, I hope I didn't fry the ESC...

So I got a like new ECX Barrage in the mail today. Went to try it out and the battery was low. I figured I'd just throw one of the little 1s lipos on it that I use with my other two RGT Adventurers. Nope. As soon as I hooked it up, it started smoking and melted the positive wire loose from the ESC. The wires are backwards. I should have paid attention to the wiring colors but I've never had this problem before. Silly me for believing in the "it can only plug in one way" connector.

Is this normal? Why would the wiring be backwards? The battery that came with it is NiMH. Surely positive and negative would be the same between lipo and NiMH or no?



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Last edited by mtm; 05-17-2019 at 11:01 AM.
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Old 05-17-2019, 01:55 PM   #2
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Default Re: Well, I hope I didn't fry the ESC...

It's most likely fried.

There are eBay esc's for $10 or so, but if you feel like tinkering, you can make a really good ESC out of a servo board. The one I'm using is 2s capable from a helicopter servo.
You will need a separate RX, but a lot people do that anyways.

Lmk if you want to do that or just buy an ESC.
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Old 05-17-2019, 04:23 PM   #3
mtm
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Default Re: Well, I hope I didn't fry the ESC...

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Originally Posted by Xrayray View Post
It's most likely fried.

There are eBay esc's for $10 or so, but if you feel like tinkering, you can make a really good ESC out of a servo board. The one I'm using is 2s capable from a helicopter servo.
You will need a separate RX, but a lot people do that anyways.

Lmk if you want to do that or just buy an ESC.
Link to $10 eBay ESC?

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Old 05-17-2019, 05:30 PM   #4
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Default Re: Well, I hope I didn't fry the ESC...

Link to making an ESC from a servo board?
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Old 05-17-2019, 08:44 PM   #5
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Default Re: Well, I hope I didn't fry the ESC...

For the cost of the $10 china ESC you're better off buying it unless you already have a large broken servo with good electronics.
You should be able to find them on banggood, AliExpress, and similar sites sold as a 20 amp brushed ESC. If like most people you prefer the instant reverse a typical crawler ESC look for one sold as "no brake" if it says no brake or isn't mentioned it has a double tap reverse delay like a typical car ESC.
However If you're on a budget you can get a replacement 2-1 ESC from a Barrage/RGT/ECX, very cheap. Personally I prefer a decent radio with separate Electronics.

Always make sure to check polarity on your 1s lipos and micro crawler electronics. 1s drone lipos seem to have reverse polarity, and some of the micro crawlers that come with 1s lipo have a reverses ESC to compensate, that will fry with a standard lipo

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Old 05-17-2019, 10:15 PM   #6
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Default Re: Well, I hope I didn't fry the ESC...

Quote:
Originally Posted by spoo76 View Post
For the cost of the $10 china ESC you're better off buying it unless you already have a large broken servo with good electronics.
You should be able to find them on banggood, AliExpress, and similar sites sold as a 20 amp brushed ESC. If like most people you prefer the instant reverse a typical crawler ESC look for one sold as "no brake" if it says no brake or isn't mentioned it has a double tap reverse delay like a typical car ESC.
However If you're on a budget you can get a replacement 2-1 ESC from a Barrage/RGT/ECX, very cheap. Personally I prefer a decent radio with separate Electronics.

Always make sure to check polarity on your 1s lipos and micro crawler electronics. 1s drone lipos seem to have reverse polarity, and some of the micro crawlers that come with 1s lipo have a reverses ESC to compensate, that will fry with a standard lipo

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This is right on. I have seen those little white connectors with the wires clicked into the wrong slot too.
The ESC can be found as XYZ 20a I believe and is very common in Chinese sites too.
I happen to break servo gears and cases when crashing large helicopters so I had 3 servos lying around. The good part is that the servo board is very precise with good resolution and has instant forward/reverse and strong brake (for a micro crawler)
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Old 05-17-2019, 10:17 PM   #7
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Default Re: Well, I hope I didn't fry the ESC...

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Originally Posted by shimey View Post
Link to making an ESC from a servo board?
http://www.built-to-spec.com/blog/20...ut-of-a-servo/

Last edited by Xrayray; 05-17-2019 at 10:23 PM.
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