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Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:16 am
by THEYTOOKMYTHUMB
My nephew got this Blitz and against my advice got a 5.5 turn which I told him would cause a lot of breakage issues of all different kinds. Of course, he's had all kinds of issues. Most of it he's learned from, but is now having real issues with arcing and asked me to take a look. As you can see this thing is a mess. It looks like 2 of the bars on the motor have gone bye-bye. My question is, can I solder the wires on to that board if I can get them to stay or is that going to continue causing issues? I figure it's worth checking on before I tell him to replace the motor.

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Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:20 am
by RC10th
Are the solder tabs completely gone or is there still something to solder to?

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:21 am
by THEYTOOKMYTHUMB
There's only one tab left on it.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:23 am
by RC10th
Technically you could solder straight onto the stator, but physical room becomes the issue. Can you take a pic of the damaged tabs?

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:26 am
by THEYTOOKMYTHUMB
Will do. May be a day or two before I have time. Worst case I guess I'll just try it and see what happens. Thanks

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:30 am
by RC10th
If that's the case can you take a pic of where the tabs are still in tact, you'll probably have to pull off the end cap.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:38 am
by THEYTOOKMYTHUMB
Ok. I wish he'd had me take a look before he got it in such bad shape. These damn kids these days!! :lol:

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:47 am
by RC10th
I'll have a look tomorrow but the black coating can be scratched off the tabs and soldered directly to. Without seeing the tabs it's hard to tell if it's fixable or not. If I remember there is copper on both sides of the board so you may get lucky.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:55 am
by jwscab
I would bet you could take the unit apart and solder directly to the stator, but I would say that the PCB is pretty much shot at this point. maybe you can dremel off a small section of the endbell to allow the wires to pass through, but insulation of the wires and windings becomes very important.

should probably be shopping for a new motor at this point.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:58 am
by THEYTOOKMYTHUMB
Yeah, it sounds too complicated for me. :oops: :lol: I think I'll just buy him a new motor. Thanks guys.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 9:59 am
by RC10th
Don't give up yet, it could as simple as "scrape and solder"....

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 10:00 am
by THEYTOOKMYTHUMB
I'll give it a shot.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 10:51 am
by Coelacanth
To be honest--that's an EZRun motor. Maybe buying another one would be probably less hassle than trying to repair that mess.

http://www.ebay.ca/itm/TrackStar-5-5T-Sensored-Brushless-Motor-Fits-Hobbwing-Xerun-Brushless-ESC-/131561571272?hash=item1ea1ae43c8:g:V0sAAOSwLVZVrrpy

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 11:22 am
by THEYTOOKMYTHUMB
Coelacanth wrote:To be honest--that's an EZRun motor. Maybe buying another one would be probably less hassle than trying to repair that mess.

http://www.ebay.ca/itm/TrackStar-5-5T-Sensored-Brushless-Motor-Fits-Hobbwing-Xerun-Brushless-ESC-/131561571272?hash=item1ea1ae43c8:g:V0sAAOSwLVZVrrpy
Thanks for the link. I'm kinda thinking the same thing. I may goof with it one day anyway when I have some time to kill.

Re: Brushless motor soldering question

Posted: Mon Nov 16, 2015 5:25 pm
by RC10th
There is copper on both sides....

We had a spec class with that motor and we always removed the bullets, scratched off the black stuff, and soldered direct.