Re-Wire an Outrunner

by smit6089 | May 10, 2013 | (40) Posted in How To

      Since I've started flying a few months back I've been doing all I can to get others into the hobby. (I must admit it's partly just to have someone to streamer combat with.) That being said I only have one transmitter at the time so anytime one of my friends takes the sticks it's a bit of a risk.

 

     Long story short a full throttle nose first grounding of my FT Flyer left me a pile of foam board and a Turnigy Park 300 1380KV motor without any motor leads. After placing an order for a replacement I thought there must be a way to fix this. After tearing into the motor and realizing there was no way to re-solder the joints I went on a hunt of how to re-wire a motor. 



     My search lead me to IBCrazy's wonderful article on RC Groups which can be found at http://www.rcgroups.com/forums/showthread.php?t=666877 , what a well written article and full of great information. After some more research and three different motor wrap attempts I decided to make a video to help out anyone out there looking to re-wrap there own motor. 

 

 

     Just a heads up, failure is always an option and should not be cause to worry, there is always something to learn from it. For instance my first motor wrap was with 30AUG wire, 22 wraps per stator armature. It could spin any size prop you wanted but didn't have enough speed for well... anything. My next attempt went to the opposite end of the spectrum. 20AUG wire with 4 wraps per armature. It could probably have flown a small house, however at the cost of 85AMPS at full throttle.... on a 300 Series Park... woops.  Learn from what you do and don't give up. However pay special attention the insulation of your stator and your wires. A short inside the motor can very quickly fry your ESC.

 

Try to do a better job then I did winding the wires as neat as possible. It will make your wrap much more efficient.

Also as I'm sure you've noticed, be sure and keep rouge paper towels far away from your stator while securing your wires. I haven't noticed any performance issues from the paper towel being stuck the the wire but I know the day is coming when It will heat up enough to cause a little smoke and worry me. It also completely kills the pride in "Look what I did, just ignore the paper towel" :-/

As you can see I did not run the leads through the standard wire outlet!

Now is a great time to use a small cloth to clean the inside of your bell to try and remove any slight rust / corrosion / dust build up.

 

 Star or WYE Termination Style (The style used in this video)

 Delta Termination Style

 

 

Links and Credits:

IBCrazy's article that got me started re wrapping my own motors:

http://www.rcgroups.com/forums/showthread.php?t=666877

 

3-D model used in images created by A.Koehn and can be found at:http://sketchup.google.com/3dwarehouse/details?mid=9cdf12b89a22095eec1735dccb170a66&prevstart=0


Wonderfull resources for the beginner winder and the source of above diagrams:

http://www.bavaria-direct.co.za/models/motor_info.htm


Outrunner Wiki:

http://en.wikipedia.org/wiki/Outrunner

 

Wire Gauge Converter:

http://www.engineeringtoolbox.com/awg-wire-gauge-d_731.html



Please comment below or PM me with any questions. I love feedback about my articles and will respond to any comments as quickly as I can. Thanks for looking and Happy Flying.

COMMENTS

casehatter on May 15, 2013
Awesome Thanks so much Now I'm glad I never throw away anything I'll have something to do all winter. Thanks to all involved..
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smit6089 on May 16, 2013
You're welcome and thanks for the comment. Im a bit of a packrat myself but I'm pretty sure the dear wife sneaks things out when I'm not looking.
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ghostrider03z on May 16, 2013
THANK YOU SO MUCH FOR MAKING THIS!!! Every single other video i have seen doesnt show anything going over the process but you cleared up any doubts i had, thank you!
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smit6089 on May 17, 2013
You're welcome. Glad it helped. Be sure and see jetpackninjas advice above about non metallic tools. Great advice and something really simple I overlooked.
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gavin davey on May 14, 2013
Very good article. Looks easy but looks can be deceiving. But I am encouraged to have a go.
Thank you
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smit6089 on May 16, 2013
It's not super easy but its not bad. Just take your time and you'll be fine.
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ftwingnut on May 10, 2013
Great tutorial. I had heard of guys re-wrapping their motors and it always seemed mysterious and a lot of work. After watching your video, I realize there isn't that much to it, and I should give it a shot with a burned out motor. Thanks!
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smit6089 on May 10, 2013
Thank you very much. I was very intimidated by it until I finally did it. Once you experiment a few times a get a better feel for it. Try it with an old burnt out motor, if it doesn't work, what have you lost? Good luck.
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Wizguber on May 10, 2013
Great video - well done.
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smit6089 on May 10, 2013
Thank you, I appreciate that.
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ScrapDaddy14 on May 11, 2013
Great video, its like you were with me yesterday when I said to myself how do you rewind a brushless motor. Watching this gave me the confidence to fix my damaged motor.
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smit6089 on May 11, 2013
Great, let me know how it goes. And thank you very much!
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tramsgar on May 12, 2013
Thanks! I have yet not had the need to do this, thankfully, but now I'd be less reluctant to take the step.
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smit6089 on May 16, 2013
Im glad that it helped!
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jetpackninja on May 16, 2013
Hey smit-
Popsicle sticks, bamboo skewers and credit cards are your friends when you do the motor rewinds.
Use of these enamel friendly tools help drastically reduce your chances of chipping the enamel off from the stator as well as the insulation on the wires.
Also, try gobrushless.com for high temp rated wire. Have had nothing but great results with this stuff. http://www.gobrushless.com/shop/index.php?app=ccp0&ns=catshow&ref=magnet+wire+std
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smit6089 on May 16, 2013
Great tips! When I can I'll update my article to include them. Thank you very much.
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Varmit57 on May 16, 2013
Thanks for the Video, You have inspired me to attempt to rewind my G160. I was really close to ordering a new one. I had a rough landing with it last year with it and the motor came apart, the stater spun and shorted out the leads in the motor.
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smit6089 on May 17, 2013
You're welcome. I'm glad it's inspired you. The great thing is, if it doesn't work, just unwrap and try again. Let me know how it turns out.
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rickthebrewer on May 13, 2013
Thanks for making this process a bit less daunting.
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smit6089 on May 16, 2013
Any time! Hope it helps.
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apache64 on May 11, 2013
Good video and it does not intimidate you , and so makes it look easy. I want to do this inorder to make some gimble motors, would this be the same proccedure do you think?
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smit6089 on May 11, 2013
It should but I really have no experiance with that so I hate to say it would work!
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LordVader on October 15, 2013
WOW! This has made it super easy to understand. Thanks so much.
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smit6089 on November 16, 2013
Very glad that it helped! :)
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KennG on November 6, 2015
Have you tried twin and triple winds yet? I used to do this in my old slot car motor days and it gave a large increase on power.
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Re-Wire an Outrunner