Modifying a brushed motor for more speed

If you've gone this far... you might also drive out the brass bushings in the motor case, and put in ball bearings if you have access to them.
The vibration concern may not be noticed when inside the vehicle .
You would have noticed this vibration when holding the motor in you hand. Your hand has more nerve endings focused on a single point then anywhere else in the body.
These vibrations will cause faster wear in the motor bushings and gears.
I would only recommend this modification as a last resort to increased speed, where it might have lacked or you have no other options for modifications.

[@danielhutchinson7115]

Sir it's not very often I offer advise.
But in that at one time I was a mad scientist rewinder in day gone by I thought a couple of things to make this easier for you.
You mention balance .
After you have preped to start the rewind never do it by number of turns . Wind wire onto the armature and then take it off.
Now measure the wire length and place the exact amount onto each pole .
This eliminates mis counts and myriad other factors .
Now after testing the armature for function
Take and vertically mount 2 razor blade on glass surface using candel wax .
Using a level set ithis on a level surface .
Epoxy wire and let dry.
When accomplished
Take and the the armature shaft onto the razor blades.
Let the armature rotate about 10 times and the heave poll will always be the one hanging
Down.
Now place armature in a vice and using drill press drill small portion of the metal pole off untill a better balance is created.
Now you're ready to roll.
Good luck
DH.

[@MangoJim90]

Thanks man!!! :) Will experiment with a small one🤭

[@NBC_NCO]

Your welcome.

[@danielhutchinson7115]

Never use a torch or open flame on an armature.
Small hobby soldering iron appliance and snip the wire from the com tab.
The hot iron is used only when reattaching wire on the com.
* Note many of these round motor can designs are press fits.
On reassemble it many times getting these units to fit together properly is very difficult
I also advise to mark the cap against a mark on the can so that the motor timing is replicated correctly.
This is important as it will serve to place the brushes into the correct timing orientation with the Com.

[@NBC_NCO]

I use a butane torch with a soldering tip.

[@danielhutchinson7115]

@@NBC_NCO
Of course that's acceptable
Basically I'm referring to an operflame like a small torch which will take and inenerate all the various components and elements due to its nature.
All components must remain functional after you've performed the operational repairs , rewinds all things that you might address and or eventually place hands upon ..
#1 rule. If performing any sort activity upon the motor , always make it better , never worse .
Rule#2 . If it's not broke , then Don't Fix It.
Rule#3 Always refer to the manual or instructions .
Rule#4 always save old or broken part for reference And comparison .
Try and utilize parts Item #s .verify prior to opening any package .
Rule#5. Use proper tools .
Don't use a chizzel for a screw driver a wrench for a hammer
Etc.
Rule#6 check and double check .
When utilizing power tools soldering Iron that get hot , or anything that can potentially be dangerous , disconnect from power source and
Put away correctly...
Rule#7 Always use safety gear and observe and obey shop rules.
I mentions this because many times it's young boys/men
That work on hobby
Items , and ideally everyone wants a good out come and continued fun.
If you're a young person reading this and you have a question or need advise all you need do is send me a message and I'm more than happy to try to help you.
And note
IN THE CASE OF ANY ACCIDENT , INJURY
FIRE , SONT HESITATE OR WAIT CALL 911
IMMEDIATELY . THESE PEOPLE ARE YOUR FRIENDS AND NEVER FEAR THEM . TELL THE THE TRUTH OF WHATS HAPPENING SO THAT THEY CAN HELP OR RESCUE YOU.
LASTLY BEFORE DOKNG ANYTHING MAKE SURE YOU HAVE PERMISSION FROM YOUR OARENTS PRIOR TO ANYTHING AND THAT THEY MNOW WHATS HAPPENING .
REGARDS
DH.

[@prerupa]

Hi.
Is it possible to change the windings of a 775 brushed motor to spin at 60000 RPM ?

[@NBC_NCO]

They make slot car motors that are the same size that will spin that fast.
The brushes in those are quite a bit better as well.
So yes, it's possible. It won't last very long, though.

[@prerupa]

​@@NBC_NCO I would need this much speed to make an experiment with electrostatic fields, ionization and gyroscopic effects.

[@NBC_NCO]

@@prerupa I wouldn't worry about these cheap toy grade ones and get a slot car motor if you're just making noises of frequencies and things of that nature.

[@morris4069]

Why bother?
You said for more speed but the balance issue.
Then you just said the same thing is available??!!🤦
Now for a kid that’s learning how things work and just understanding the concept, good project.

[@NBC_NCO]

When you race in factory stock this is a way to cheat.
Especially if your factory stock motor is like a 21 turn. Making it a 12 turn will give you an advantage.
The other reason is if you have to rebuild a motor for a vintage rc car and no hop up options for it.
I used to purchase old vintage rc cars and throw in modern electronics. The Motors in those are built for longevity not for smiles.

[@jeavenstubin5112]

Or just to learn somthing new.