Vintage Edinger motor stopped working

[Frankentruck]

If you don't have a good way to crimp the tabs over again, I'd recommend not removing the endbell. I spring loaded punch does a good job with the tabs. Hammer methods are harder to do. Also, the tabs can snap off.

[Brendan2904]

If you have Facebook access to the RC10 Talk group I uploaded a new video after I changed the brushes.

[juicedcoupe]

You should be able to look through the brush slot and get an idea of the comm condition. You can use a fiberglass pen through the slot and turn the motor to remove carbon buildup.

If you don't have the tools to true the comm, I wouldn't bother trying to remove it.I don't recommend the YouTube sandpaper method.

[JosephS]

I don't recommend the YouTube sandpaper method.

What is the you tube sandpaper method? Sounds a lot like something I would try. What's wrong with it?

[juicedcoupe]

I don't recommend the YouTube sandpaper method.

What is the you tube sandpaper method? Sounds a lot like something I would try. What's wrong with it?

It is basically wrapping a piece of sandpaper around the comm and twisting the armature.

It is very crude and inconsistent. You can't correct highs and lows on the comm. There is also a chance of embedding foreign material into the comm.

Before getting a comm lathe, I tried it. It arced like crazy, even though it looked good. After getting a lathe, I could see that the comm surface was very inconsistent.

[JosephS]

I don't recommend the YouTube sandpaper method.

What is the you tube sandpaper method? Sounds a lot like something I would try. What's wrong with it?

It is basically wrapping a piece of sandpaper around the comm and twisting the armature.

It is very crude and inconsistent. You can't correct highs and lows on the comm. There is also a chance of embedding foreign material into the comm.

Before getting a comm lathe, I tried it. It arced like crazy, even though it looked good. After getting a lathe, I could see that the comm surface was very inconsistent.

That is 100% what I was going to do. Do any modern motor rotors work in vintage cans? I have a motor exactly like the one on the thread and I'd like to bring it back to like new condition. Could I just disassemble a modern 27turn stock motor and call it a day? Are there even modern 27turn motors to scavenge parts from?

I just sent a mail to Holmes hobby to see if they would service an old motor seems like they may :

https://holmeshobbies.com/service-and-labor/brushed-motor-rebuild.html

[juicedcoupe]

The Tamiya Dirt Tuned motor is 27T. But it would be a shame to part out a nice motor.

[Brendan2904]

Thank you all for your help.

[mileloud2605]

I have never opened one, but I have read various methods on this site. If no one responds, you might try searching. Your motor has been opened at least once already as evidenced by the motor tabs. You might be able to get a small flat blade screwdriver under them and pry them up to remove the cummutator since they don't appear to have been pushed all the way down last time.

In case you don't know how JuicedCoupe determined that your brushes were shot just from the photo, look at the springs, specifically the part pushing on the back of the brush.

I'll give it a try.

The brushes were shot. The new ones were a lot bigger when I replaced the old ones. I saved the old ones for "original parts ' I have collected. I will probably give it a quick run and then shelf it with my other restoration jobs and original builds from long ago.

There's a repair service on this site that could examine the motor https://www.noahsrcark.co.uk/