Restoration of Electric Motor - Will It Run? 

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Friendly advice for the future electric restorations: -In motors do not use duct tape. Shrink tube instead. -Use high temperature tolerant wires if you are soldering (look at the shrinking of the plastic while soldering) -Always use isolation transformer when you power up such old equipment. The lacquer on the magnet wire tend to weaken and cause a leakage to the body of the motor. This may lead to electric shock.

Nice restoration. But,,, couple items for next time. One, always use a grommet when a wire passed through a metal hole. The starter capacitor wires are in danger of shorting from rubbing on the motor housing due to vibration over time.. Second, the armature end play is excessive, on older motors like this it was usually set by shims on the end of the armature shaft. Notice how the armature moves in and out when you power it up and down. Third, I have to agree re the shrink tube or kapton tape, even 3M 88 gets soft if heated to temps a motor can easily reach. I don't know why, but there's something appealing about the sound of an old electric motor, especially the big ones. Must be something about the type of metal used in the armature and windings that make them sound a bit different the modern motors.

I was amused by your revving your impact gun after removing the drive pulley. :D

Careful with the paint stripper! If it gets on the magnet wire it'll eat away the insulating enamel!!! Nice job btw...

Nice job! Maybe shrink tubing would’ve been a better choice to wrap those wire connectors rather than electrical tape. Keep up the good work!

My humble suggestion, besides the electrical connections and painting, is this. Use a dead blow hammer or rubber mallet. I've busted stuff unintentionally and then just stare at my mistake in unbelief.

I have a motor much like this my father dug out of a dump when he was a kid he fixed it up and it has been used to power a disk sander since 1948. I still have it and use all the time.

I think shrink wrap would have looked more professional than electric tape.

Very nice! Now I feel bad about throwing away my 65 yr old motor I should've restored.

Answer to some of the questions raised. The motor is a single phase capacitor start. The internal centrifugal switch opens the start windings when it is up to speed, the capacitor gives a phase shift. If the switch doesn't operate as soon as the motor is up to speed the start windings can burn out. It should only takes 2 or 3 seconds if it hangs on I would put a new switch in, I expect they are still available. Check it under load when the compressor is back together. A 1/2 hp would be 375W current will depend on the voltage if its 220V W=IV I=375/220 = 1.7A (approx.) The bearings will be plain usually bronze with grooves for the oil to lubricate. The wick needs to have oil added periodically depending how often its run. I was surprised when you washed the Stator windings (coils). How did you dry them? When I worked in a repair shop we would dry them in a big oven for 2 - 3 hours then megger test for good resistance to earth, 2Mohm or above, before re varnish was applied. IMPORTANT make sure to restore the earth wire as if you get a fault your whole compressor could become live with dire consequences. The shrink tube already mentioned. If this is you first attempt at refurbishing a motor you have done a reasonable job. Back in the day I must have repaired 100's of these never kept count. I used to do re winds mainly.

How can anyone not “like” this restoration? Bravo!!!

1:30 - I'm the same way when I defeat something like that. "Ahhhh! That'll teach ya!"

very nice restore THANK YOU for using a grounded cord

This channel is so underrated and your skills are not even that bad in fact you have don't fantastic job on the motor i must say that you do need some more precision training in some parts but the rest is perfect. Keep up the good work m8.

Very nice restoration. I was surprised to see how you washed everything in water and amazed you could reuse the windings. I have an old grinder this vintage. I may try to open it up and see if I can get it to work. Much better grinder than a new one.

Beautiful work!!!! 🤩

Never in my life have I seen someone clean a start switch, motor winding , or sleeve bearings in soapy water before this day. Nor have I seen sleeve bearings get sandblasted haha.

Please tell me that electrical tape was use for trolling purposes. You had shrink tubing, you could've used kapton instead.

Thanks for this good restoration 👌👌

I always admire the ingenuity of restoration projects like this, but I've rarely seen one that makes economic sense, Considering the time and trouble involved, it's easier and cheaper to scrap the old one and buy new.

I love your oil pump!

Runs like a brand new motor!!

You did a great job bringing it back from death, but why didn't you use shrink tube on the motor connections instead of electrical tape? I never rely on electrical tape in such a situation. Shrink tube does a better job and you don't have to worry about it unwrapping and causing any electrical issues. Just my opinion. Thumbs Up!

Turned out very nice...

Nice to see how you took that old motor and cleaned it up.

Dang. That spider or whatever made that motor his condo! I don't know how you made heads or tails out of that mess, but you did and it runs!! Great work.

Couldn't see the numerals in outer edge of thumbnail, could only read "xx0 year old motor". But I have an old GE motor on my compressor, it has bearings that must be oiled by hand, I took the spec plate to a motor service shop and was told it is at least 60 years old, HP rating is 1.5 but it drives a Binks 2 stage pump that would normally require a 5 HP rating, because HP was rated differently back then, and the frame size of the motor is much larger than a modern motor of that HP range. It is in daily service, runs fine, all original, never rebuilt as far as I can tell, I've had it for over 30 years.

Super. Poland Polska. Piękna pasją lubię silniki elektryczne mam parę simens schuckert przedwojenne 1930 rok podziwiam ludzi którzy zbierają silniki zabytkowe pozdrawiam mirek

Lots of fun to watch.

Just beautiful and most inspiring! BRAVO!!

Nice work…👍🏼

Great restoration. I have just done the the on an old Vickers motor. The one thing I wasn't sure about was the oil pots. I kept squirting oil in the and they were not filling up. You have shown me I need to put in string to hold & drip feed the oil onto the spindle.

Nice job. Restoring that old stuff is fun. PLEASE purchase a brass hammer or a brass punch.

Nice restoration. You never know just what you’re going to find inside motors that old. I think you were quite lucky that the wiring wasn’t completely shot. Good job.

Nice work. I enjoyed watching and your presentation was great.

Superb restoration !

Very very good👍

His soldering skills gives me anxiety

nice vesy ache kopsis ki apny

A joy to see you at work!

Beautiful!

Excellent work and very satisfying to watch.

Is the rotor pulling itself backwards upon start. Doesn't it cause alignment issues when you mount a belt onto it.it is really interesting to see a motor without bearing mounts.Nice work.

Good workmanship.But one thing that the motor must rewind before restoration.

Amazing!

That motor is an induction motor with a capacitor start winding and a thermal fuse. 90 years old would bring us back in 1930! I believe it is much more recent than.

Good work

This guy is doing a good job. Please subscribe...

Awesome job my friend!👍👍👍

Very nice but I think my granddad’s fan is just gonna have to be for decoration.

Hi bro 👋👋👋 good to see you 🤝🤝🤝 very good restoration electric motor 👍👍👍

a very nice job ¡

Great work. ✔️💯🏆 Thanks so much for sharing. 😉👌🏼

That paint striping gel looks delicious

Awsome video. Good job. But i did cringe when you put varnish remover on the winding section cause the wires are varnished

always remember the windings in these old motors are asbestos windings, good idea to wear a mask in the event of any accumulated dust inside😉

I have a 1959 Craftsman Drill Press with original motor.. I did install a grounded cord in 2015.

WHAT A REBUILD! im surprised, you didn't yell SMOKE TEST when you plugged it in ;) UXWBill says it when he fixes his electronics and finds PC's on the side of the road. LOL

Great rebuild!

First of all: great work. I would not know how to restore a motor. Thumbs up. Aren't you concerned about lead in the paint?

Beautiful job!

So the string is a good replacement for the original felt and there's no problems with it? How do you get the oil cups out?

I wish you had your shop somewhere in southwest WI so I could hire you to restore an old delco motor that powers an old Voss wringer washing machine...

That's impressive!

You have an amazing talent sir

Pay attention to camera picture sharpness

I think 90 years back ALUMINIUM casting was not used for motor cover plates . West German introduced this in 1955

I was totally expecting that gear puller to blow apart. That happened to me using one of those things on my crankshaft pulley. One of my less fortunate HF purchases.

From Iraq 🌹👍

Good job

Nice video! This thing is so old, I didn't know they had electricity back then. I rather expected him to find some extinct insects in there... btw, the double speed for some scenes is a good idea.

Is that a century motor? Looks to me like one. I have a half hp running my bandsaw. Lovely motors

That is ridiculous...my father has a few of these and I was afraid they are full of pcbs...but I'm encouraged by your efforts...I notice you left the stator alone...did you test it before you did all that work?

Brilliant to watch...did this go with the red and white compressor?

look amazing good work

Sandblasting camera work excellent

What did you end up doing with the ground wire?

Amazing that those same windings still work!

Interesting It's a shame you didn't show how the various engine components are connected!

I've got about a half dozen of these ranging from the 1930s to the 1970s, in varying conditions that I plan to start restoring soon. The old school ones are particularly daunting for me right now.

Nice restotion 👌

Awesome. This is very helpful I just got a lathe that used this motor. This is prob a dumb question but I can find a thing anywhere on it. What type of oil is used in this motor? Thankyou in advanced for any response.

May I ask where you attached the new ground wire inside the motor, please?

So we're figuring those old windings are good to go? What is the cylinder on top, resistor? fuse?

Risky using paint stripper close to those motor windings. When I was in the repair trade overhauling electric motors, we used kero to clean parts on small motors, 10HP to 25 HP and steam pressure cleaner for motors larger. The stator windings were cleaned the same way, after being tested and found OK. Stator was then stoved and varnished on larger motors and smaller motors stoved then spray varnished. The windings on motors that age have old varnish that is often brittle, and great care is needed handling them.

Nice job.

I enjoyed the video.

Es un Trabajo con tremendo talento y calidad👍🚜🚜🚜

the best

Great job Thank you .other videos

Nice ❤️❤️❤️

I like it

Excellent🇦🇷

bravo bravo!! You added a ground wire

hello, I have one, its other side is for something? because I have noticed that it also rotates, I wish I could use it to sharpen knives, but I can't think of how to place it. Sorry for my English, I'm from Argentina.

Not bad, but I still had to cringe at a few things. When cutting connections for disassembly, I would cut as close to the joint as possible to preserve the original lead length for easier reassembly. Soldering: if you are using leaded solder, make sure you use 63/37 instead of 60/40 (solidifies quicker), look at adding a bit of flux to the wires beforehand so the solder fully wets the wire and the crimp connector. Check the heat rating on the wire chosen (was surprised to see how quickly the insulation pulled back during soldering), and of course, heat shrink is a better option than tape ;) All things considered, not bad for a first restoration.

Amazing work! 🧐😃

The coil inside the engine looked grungy yet needed no restoration. Interesting!

Very nice..