You cannot measure armature resistance and get a sensible reading with that type of meter, it will look like a short circuit because the resistanc is very low. Also, if there is a shorted turn on one of the windings, that will not be detectable either. There is a way to test this - use 6v A.C. and measure the current of each winding pair by connecting across opposite copper strips on the commutator, a similar level of current should be observed with each measurement. A shorted turn will show as higher current or an open circuit will show zero current. As well as cleaning the commutator, each gap between copper strips should be cleared of debris as well. Ensure that there is no connection between the commutator and the armature body. Hope this helps.

Thank you I feel 1 step closer to understanding the sparking motor I have. Also it helped that it was a bad motor all the other videos worked after cleaning up and parts changed. You told me what a burnt up motor looks like and why it's no good. Thank you very much.

Generally handy men is good with idea of tune-up. Just few recomendations from my experience. Never ever use files for commutators at home. Just sand paper different grit 100, 200, 400. Turning by power drill good but must be at higher rpm. Carbon residues from the grooves could be cleaned with utility knife. Also woud be better to blow off all armature from dust with compressed air, if possible.

hi handsome. you me laugh. thanks. I have a 2014 kobalt km210 electric lawn mower, and this is exactly what I need to do to mine. I found it on the side of the road,free. I removed the cover and the carbon was full of metal debris, so I used a wire brush and got the spring to retract and the carbon has 80% left , one side chiped off as I was cleaning it. I examined the copper and it needs cleaning, I thought and said to myself, I know who can teach me , someone from India. I searched for carbon brushes and here you are. I'm happy your here . thank you.

Inspiring video, thank you. I agree with the comments though I would never use a file because it would take up too much material. Thanks for sharing

Great video. & Sir I most definitely agree with the comments about the "Mayor" 😆! IDK what state your in, but I tell you one thing.. in 2023 I think all sides from far left to the far right & even the "extreme middle" can all agree on these politicians being out of touch with reality! But from a Man of the working class while maintaining a family & a stubborn truck.. I appreciate this video my brother from another mother! 🤝 P. S I also agree with one of the comments down below.. being "if your in buzzer mode u will get those beeps & to check for resistance near the OHM as well high amps when it runs. But if possible try using a 6V AC! Defeat the issue & never let these things beat you! I hope the comment section *(as I'm sure this man fixed his issue 2 years ago lol)* as well as the video helps everyone with this problem F. Y. Pretty much dropping this comment altogether to support your channel & the algorithm. Best of luck & God bless you AND everyone who reads this, on ALL of future endeavors 💯 ✌️

Thank you for making this video.

I was very entertained ..Thank you for vid..

The armature isn't shorted. It is supposed to show a resistance reading. Use an armature growler to test it properly.

Its not shorting, the beeping is a good thing, its showing there is no dead bars on the commutator. The best thing to do is to check resistance and have it checked on a growler tester.

Awesome vid it thank you !

Simple easy video. Your comment “I am officially pissed off“ was hilarious.

Nice info, thanks

good job!

Can I use sandpaper if a file is not available?

i think it's not shorted, it beeps normally if your in buzzer mode. you must check for resistance value near to an ohm. you might as well check if it is high amps when it runs,refer to the output specs of the unit.

hi handsome this end result is beautiful. what cream do you recommend applying?

Oh ok there ya go. Nice and btw I like that you told us about the mayor! Just like the United States man spot on when it comes to over here lol

Use sandpaper you will have a better results. Best regards and thank you for your Video.

I'm pretty sure the mica between the comuntator is packed full of copper shavings from you file work causing the short

dont you have sandpaper?

Total greșit! Toleranta între cota de rulment și colector trebuie sa fie sub 0, 05mm

I like your style and I don't disagree with your recycling view.

You need to put your armature on a lathe and machine the commutator. You will never get rid of the sparking this way (by looking at your brushes), you probably ruined your armature now unless you try and machine it to get rid of the file gouges. Do not do this people you will ruin your armature . You armature is probably fine , your commutator just needs to be machined / polished even. If anything try putting new brushes in. won't completely solve your problem but will probably get you through a job.

Thanks

Can I use sand paper?

Plz grinder me karbin jaldi se Chala jata h kya krna h kese sad krna h

I have same GRADO

Good job

Where can we order a new armature

"The mayor is driving around in a good car - but let's not talk about politics" - love it!

i sware that i sleep when you was sanding the coper.

Sir gender me karbin jaldi jaldi kyo ghas jata h khatam ho jata h end plz btaye

Minute 08:10 . . . don't blow up with your breath, unless you wear goggles, otherwise some copper or carbon particles can get your eyes . . . or, as a minimum protection when not wearing goggles, close your eyes when blowing . . . for your safety . . . Good job in any case, i have a couple of rotors to treat as you explain in your video . . . thank you very much ! Best regards. Alessandro ( Italy )

Using this method is bad. You are putting scratches in the copper connections which needs to smooth for the brushes to make greater contact to operate properly. It will also wear the brushes unevenly. You can remove the dark markings from the copper where the brush makes contact simply using a eraser from a pencil.

Good morning sir why still sparkling im already sandpaper and changed the carbor

Still thanks for the shearing

you could also use a wire brush head on the end of a drill that spins great for taking rust off very small one else if its fanning out to far wrap it in duct tape to pull the brushes inwards for more controlled direction.

I have the same problem with anglegrinder I just bought in a pawnshop. Why does it eat so many brushes, why is it so hungry? I just read somewhere that man 3 reasons are 1. Inadequate Spring 2. Pressure, Poor Commutator or Ring Condition or 3. Brush Holders are Unequally Spaced or Out-of-Neutral. I guess now I have to disassemble it and try to eliminate these possible faults.

Main kam motor carbon plate kaise dalna chahie

Such technique maybe good but most of thebtime when burning brush with high ligh often times the amature is grounded and shorted. I have done many times in my own power tools, replacing the amateur is still the ultimate solution if testing the stator is good

Rewind it

Try filing that chip and around it

I guess you're getting bananas ...

this means next time before you go through the whole profess of setting up your armature and clean it, you would be checking if there are short or other wise open circuit anywhere first. Right? :-)

My drill machine also sparks a lot

"We" weren't talking politics, you were 😝

I might be wrong but your file seems to be the wrong way round

You are rotating the armature the wrong way. Your file is made to cut in a way that you need to reverse your direction.

Your meter will beep on a healthy motor.... 🙄

Also make sure you don't put too much pressure on it because you might cause those to combine which would defeat the purpose of the repair.

Sir, pl. reply me what happened if Capacitor of angle grinder 0.22 mfd disconnected?

Should have checked functionality before doing any work on armature. Also when using file, you should have it set to cut against the rotation of armature (files are made to cut when pushed away from handle} and use a machinist file (about 1 inch wide) to help make armature flat and even. It was a good idea start with though.

use a soap stone to clean commutator, or some very fine emery paper. file is just fucking it up more

So thanks for the comments. I saw it and was curious why is he using a file on something that looks delicate and has tight separation yet he is introducing copper dust and particles into the spaces. LOL

Why not just use a Brillow pad or sandpaper a file will take too much off and you can’t test it that way

Keep up good and u r funny

Parfait

You Win Sometimes ☺️ And Lose Sometimes 🥵

put it back in the damn saw and TRY IT JESUS

Omong opo weki boss Ra dong q

Emery paper would be best. 320 grit.

This is wrong in many ways using file stripping to much metal from the rotor surface just use 1000 grit sand paper and you will get perfect results

This time I will do it manually with the help of Woodglut designs.

NEVER use wood sand-paper, or metal (silicon carbide) papers on the commutator. Metal dust particles are a safety hazard.

Not only is the commutator scored, but you are using horrible brushes, if you search, how to wear in carbon brushes, the first result shows what brushes are good or bad

Partactwo

Lol

I prefer to build with Woodglut plans.

You could have put that whole situation and it just two little lines I watched it and did not learn nothing

Is not short

🤦🏻‍♂️ omg! You create scratches, thinner and scratches on the surface of the commutator armatures!

You don't know what you are doing!!

Thanks