REWINDING A BRUSHED MOTOR???

by **combatking** » Thu Jun 21, 2007 4:59 pm

anyone ever accoplish this? just wondering how to terminate? is each stator seperate wire like a brushless system or the same wire? can someone send a link on how to do this?

by **ILV2FLY** » Thu Jun 21, 2007 7:02 pm

I have been looking for you Mike but all I can find is how to convert a brushed motor into a brushless motor. Sorry, not much help.

by **DiamondMox** » Thu Jun 21, 2007 7:41 pm

Ask JJ. He was working on winding motors for his EDF-55s.

by **combatking** » Fri Jun 22, 2007 12:27 am

hey brian, send me some links on how to convert brushed motors to brushless please i have been wonding if this can actually be done or not. thanks

I will have to PM JJ and see what he has to say, i talked to him before about this but it was just an off topic now im really thinking about doing one.

by **Mark** » Fri Jun 22, 2007 2:00 am

I never thought I would see the day when it was easier to find info on building an ESC than building a brushed motor. One hour I have been searching and have come up empty handed.

This is strange. Have I now found the end of the internet ?

by **combatking** » Fri Jun 22, 2007 2:35 am

MARK dude answer your phone!!!!

I just converted my BLACKFOOT TO BRUSHLESS!!!!!!
ITS CRAZY OFF THE HOOK FAST!!!
HAHAHA omg you have to see it,, its to damn funny!!!

now i have to convince mark to let me put this system in his on road car... but we need a really long smooth straight long, did i meniton long place to run it and get a speed run with radar!!! im gonna say at least 70mph easy!

by **SilverCheetah** » Mon Jun 25, 2007 12:30 pm

After doing a little Googling (search string: "dc motor winding -brushless -control"). I came up with a few good pages to look through.

a basic intro to DC motor functionality:
http://www.solarbotics.net/starting/200111_dcmotor/200111_dcmotor2.html

math involved with DC motors:
http://myweb.dal.ca/gillm/Assets/motorcalculations.pdf

how to rewind a 300W size DC motor (the same idea applies for small motors as well):
http://scootersupport.com/motorrewind.htm

if you still have questions, I'll see if I can make up a diagram or something (could take me several days to get to it)

by **combatking** » Wed Jun 27, 2007 6:29 pm

Well i decided to take my motor apart (which i should not have done ) and found how many winds were on the amature. 27 to be exact well its a 27 turn motor DUH..

anyhow its wrapped with 22 gauge wire, I had some and said screw it, so i went 17 wraps the first time around, and put it all back together and she screamed!!! untill i put it in the truck, then i found out it had no torque at all and for the first 20 feet it barely moved. had better top end but nothing to brag about...

second time around i wound it 24 turns, this had much better take off but still lagged compared to how it usually acted. so I decided to strip all the wire off again and go for another try, this time im going to wrap it 27 turns just like how it was made and HOPEFULLY she will be back to normal...

i just wonder how they wind lower turn motors that still actually have low end punch.. hmmm i guess ill never know.

by **Mark** » Thu Jun 28, 2007 1:54 am

What awg was the original wire? I still think it should be re-timed ?

by **SilverCheetah** » Thu Jun 28, 2007 11:31 am

raise your voltage or reduce your resistance.. this will get more current into the motor to produce more torque. Think of current as torque and voltage as speed generally. To get more current you must increase voltage for a given resistance, or reduce resistance for a given voltage.

always remember ohm's law: voltage = current * resistance (V=I*R)

I agree with Mark.. if you want fewer winds you need more copper to reduce the resistance (to get more current for a given voltage). And timing can play a small part in efficiency (unless its way off then its a big factor)

by **combatking** » Thu Jun 28, 2007 1:13 pm

the original gauge wire was 22 and that is what i went with, i have been checking out motors on a few different websides and most lower wound motors have at least 19gauge wire, with double strands. i dont think i could get that many wraps on this stator with the 22 gauge..
HMMMM and i cant increase my voltage because the speedcontrol is only meant up to an 9.6 volt.. I tried a fully charged 9.6 volt battery and every thing started going crazy... to much voltage not to mention the fact most RC car escs wont take more than a 2 cell..
so the higher voltage thing is out of the question. im gonna have to think about this some more

by **Factory Team Gair** » Thu Jun 28, 2007 3:38 pm

Most of the time when you put in a lower turn motor you also increase the gear ratio as well. In most modern cars it's basically a pinion gear tooth per wind up or down. For instance going from 8 turns to 12 turns would mean going from a 18 tooth pinion to a 22 tooth. In your Blackfoot you may be more restricted.

by **combatking** » Thu Jun 28, 2007 4:34 pm

ya basically it has a 10 tooth stock, i can fit a 12 tooth but only thing is with the 10 tooth it had no power low end at all, and i think the only pinion i could get smaller would be a clodbuster rockcrawler 8 and 9 tooth.. im bidding on a 15 turn on ebay right now for 3 bucks lol

by **Mark** » Fri Jun 29, 2007 1:05 am

Will changing the motor do anything if you are restricted with gear size ?

by **combatking** » Fri Jun 29, 2007 10:31 am

oh ya just a change in a motor that spins 19000 rpm to one that can spin 30000 is a huge difference, i would probably change to the 12 tooth so that the tires dont spin all day long but its just for bashin anyways!!
I do have a bid on ebay for some Tmaxx shocks .98 cents HAHA

REWINDING A BRUSHED MOTOR???

REWINDING A BRUSHED MOTOR???

Who is online