SNS 244: Electric Motor Shaft Finished 

Hi Adam, I just wanted to put in a random note. I've been watching you awhile now. Lately more than usual. Going back through the archives through SNS and various shop projects. Life provides some dark moments and in those moments we seek out islands of sanity, sturdy rocks to lean on. Your dedication to work, to excellence, to precision and perfection has been of more comfort than you know. You reaffirm that there remain people out there who care about what they do, about getting it right and about being teachers and sharing their knowledge. The affection you have for the tools and skills imparted by your father and grandfather are obvious and admirable. You keep being you. Thank you.

NACA was the predecessor of NASA. Lewis Research Center, now Glenn Research Center, is next to Cleveland Hopkins airport. ERB would be the Engine Research Building, 263 would be his mail stop.

Hey Adam. You and some other youtubers really inspired me to get a small lathe and start making stuff. I've been having lots of fun turning some small things, and it's very rewarding becoming better and better every time I make something. This week I needed to turn some simple stepped bushings for some project; 6mm ID and 9.12mm on one side, 12.57mm on the other side. It was the first time I really felt comfortable hitting it exactly on spec without really breaking a sweat. The odd-ball sizes were annoying, but they didn't intimidate me as much as they would have a few months ago. When I hit the 9.12 I was so happy and proud. I know it's just a simple thing, but it was a nice moment for me. Your videos have really been a huge help and inspiration to me.

NACA Lewis is actually NACA Lewis Flight Propulsion Laboratory, now known as NASA's Glenn Research Center!!! HOLY CRAP!!!!! That book is a part of history!! NACA Lewis is where all the research for liquid hydrogen use as a rocket fuel was developed and most current liquid propellant rocket engine technologies used by the US were developed! :-O!!!!!! The tie in to Notre Dame is very very historical. University of Notre Dame was one of the universities that was doing heavy research in the areas of propulsions and aerodynamics for inter- and exoatmospheric flight for NACA and the government. Its probable that a worker/researcher/professor/student was at Notre Dame and then transitioned over to Lewis/Glenn in Cincinnati. The ERB (Engine Research Building) was literally the heart of all research at Glenn. Rooms of draftsmen and engineers designing and producing drawings to be built in the machine shops to ultimately be tested and/or flown. Whoever owned that book was likely a machinist or engineer for NACA Glenn at one point. WOW!

Looking forward to hearing how quietly it runs. Really good to see how your weight loss is going. Almost at 1/4 million subs - and every single one is deserved.

Looking thinner and healthy. Great job Adam.

To get keyway depth use say a 1-2 micrometer and measure from bottom of keyway to the other side of shaft, take this dimension away from shaft diameter. Just a thought from England. Great videos Adam.

Guy you do everything as I would . Been in the business for over 40 years. Great to see you and your family running together through the years. My kids now run my business with over 39 machines and 3 canceled lathes and machining centers . God Bless ,👍Vinny

Wow! How much weight have you lost?? You’re looking great! I was watching some of your older vids and I’ll say, your weight loss is significant. Congrats!!! Love the video as always.

i'm an electrician and have spent my working life installing and repairing motors that is the prettiest one I've seen, well done.

No matter how many weeks in a row you do the Machinery’s Handbook it always makes me smile.

Hi Adam, you are looking great. This is building up to a really great series of videos. It was so nice to see Stella's picture in the background at the end. I'm sure I can still see her some nights in your shop (like Bailly in Brian's shop) checking up on the progress of your projects. Most sincerely. Joe.

Great job Adam ...... you really have lost weight, well done ... 🇬🇧

Adam, you're looking very healthy. Congrats on your 250K subscribers.

Manual machinists are a dying breed and just when I think to myself Id take .005 to see where its at....thats exactly what you do. I machine pump parts and safety valves for the past 13yrs with a total of 17yrs machining experience. Great videos in my opinion brother!

Adam, don't forget that the rotor laminations are dipped in varnish so that they are electrically insulated from each other. This is to reduce eddy currents and power loss. Make sure that the cleaning job does not allow them to short out. This will reduce efficiency. Great job and most interesting. I really enjoyed these videos.

I can tell you are a true precision engineer - "About 39.6mm". If that motor rotor has some dings in it, it might be worth seeing if the motor guys can do a dynamic balance on it, considering the quakity of the shaft you made. As always, thanks for sharing - I learn something every time I watch one of your videos.

holy crap. You lost weight. You can even hear it when you speak.(less of a pause to breath) Keep it up man.

Damn Adam you look great dude. We can actually see MORE of your shop in your intros now because you’ve lost so much weight. Keep it up Man!

When you are facing the camera at the end of this vid, you can clearly see, in your face, the weight loss you have achieved!

This was a very pleasing video. I love the K&T related videos. They're some of my personal favorites.

"NACA Lewis" is shorthand for The National Advisory Committee on Aeronautics, Lewis Flight Propulsion Laboratory. It is located in Cleaveland, OH and is now called the NASA Glenn Research Center, renamed for the NASA and John Glenn. (NASA - National Aeronautics and Space Administration, succeeded NACA as we entered the space age.) Thought you might be interested in a little history. You seem to like museums.

NACA Lewis was the name for National Advisory Committee for Aeronautics, Lewis Field, Ohio, now the John Gleen Research Center of NASA. NACA was the preceeding organization to nasa, dissolved in 58 and turned into NASA when they got some space up in there.

The more I watch your videos and see how you put your special talent to work the more I want to watch. You seem to be able to see what the finished product will look like before you start. I give you 5 stars on all your work. Thanks for allowing us to watch you work.

Man, that turned out nice (no pun intended)! Well done as usual. And, as always, I like seeing the Booth trio at the end. It makes me smile. Thanks.

Looking good bro, you seem to have a new pep in your step. Good video as always.

Another great video series Adam. I always appreciate the repair rather than replace content, but then that's what makes you a great machinist.

I'm working on a 2x72 belt grinder for my shop posting the build on my channel. I have to cut a keyway slot in the shaft of the motor I have so this video comes in at a perfect time. Thanks for sharing, it will be used by me very shortly.

Excellent precise job again. Looking well with the weight loss. Keep them coming. Dave UK.

Adam, you had enough never-seize on your finger to do an aircraft carrier. That stuff gets on everything. You can use it in the garage, walk into your bedroom, and there will be a dab on your pillow. Two days later you order a hotdog and notice a spot on the bun.....

The lighting on the lathe made the surface finish on the shaft look all kinds of funky, but the lighting on the table shows the fantastic finish you've shown time and time again. Great looking part, boss!

Adam, Looking good on your weight loss. Keep up the good work.

The Isle of Wight is pretty small. I wonder if he knows of those maniacs who spend their days rebuilding old tanks. That Sherman project was something even Adam would like.

30:23 That's why manual presses are so helpful for jobs like this, with a little bit of experience you can feel how the press fitment is going

You're really doing well on your weight. Keep up the good work!!

Hey Adam. Superb work on the shaft for the K&T,. It’s a pleasure to watch someone so highly skilled at work. Thanks for sharing what you do with us. Personally, I have learned a huge amount. Thanks!

Run-out is way better than I feared. My motor shop experience was 35 years ago so maybe my recollection is a bit cloudy. I recall pressing a finish shaft in an armature worked about 4 out of 5 times. 1 in 5 required a little inspired press work to get the pulley end of the shaft in line with the bearing fits. Nice work. Economically done. Motor shaft replacement is a good test for a new on the job machinist. Pass that and you're on the way to continued employment. Fail and you're out the door soon as the next guy passes his interview.

Hi Adam, thanks for the video as always. Regarding the Machinery's Handbook, NACA - Lewis (Flight Propulsion Laboratory) is the predecessor of NASA/Lewis - Glenn Research Center in Cleveland, Ohio. NACA, short for National Advisory Committee for Aeronautics was established around WWI to oversee Federal government funding of research into human flight, changing to NASA in 1958. It seems possible Mr. Steinflug (sp?) may have been involved in machining work at the Cleveland research location prior to 1958, suggesting he may have been involved in research projects providing the foundation for rocket engine design used in project Apollo. This book may have quite a history associated with it!

Niagara Cutters end mills are great. I use them at work for pretty much everything. With the right feeds/speeds, they leave a surface finish 2nd to none.

Wow you just cracked the quarter million subs. Congrats!

"About 39.6 for you metric guys." I laughed at that.

I would like to see more works with electric motors, good job.

I haven't laid eyes on ya since I met you in KC. What a change.

Thanks Adam. BTW, you are looking trim. Keep it up, don't quit.

Merry Christmas, Adam. Thanks for the great content.

Adam you’re looking good won’t be long to you reach your goal

Lookin' good Adam! Very happy for you man. Absolutely love watching you work on your lathes and shaper. Always look forward to SNS!

Adam, well done on the new shaft, hope everything else is good on the motor.

Most consistent RU-vidr

I have an idea. Get a corkboard with a world map and use a colored pin to mark where the winners live. I'm sure most folks wouldn't have a problem with it.

Great job Adam! You are one very talented Dude!!! Keep em coming.

My first machining job was in an electric motor shop, though they used a different process to replace shafts. First, one end of the shaft was sawed off, and the rotor set in a lathe, so a drill could be run through it. The idea was not to machine the shaft entirely out, but to take most of the metal out of the middle, so that the rest could be pressed out easier. The rotors at this shop were a fair bit bigger than this one, and would've taken too much pressure. To put them back in, the rotor was heated with a propane torch until an infra-red thermometer read 400° in the rotor bore, then the new shaft inserted. Usually it dropped right into place, but sometimes needed a bit of pressure to seat it. The shafts were also made with a shoulder that fit up against the lamination stack, to make sure the axial position was correct. Also, at the end, that motor might have even less runout than you think. Remember, in when assembled, it's turning on the bearings, not on the centers. So if you set it on balancing rollers, running on the bearing journals, then you'll see the runout as finally assembled; if the rotor stack and the drive-end bearing journal had the runout with the high spot in the same place, it'd be nearly perfect. Either way, that's more than good enough for this machine, with any wobble taken up by the drive belt.

Can't wait to see the K&T running again.... so satisfying to watch.

Hey Adam, beautiful work as always. Love your attention to detail. Not sure how humid it gets where you are but it would be a good idea to put some lacquer on those rotor laminations. Over here they rust really quickly even from finger grease. Can't wait to see the K&T up and running👍

Close to a quarter million subs. You're the man, Adam.

Looking good Adam! Great job on the weight loss!

Good machining is an art. You are very maticulas. I shows in the work that you do. I believe, the only way is todo a job right. This is the way you work. Great!!

Glad to see you get the rotor shaft for the K&T electric motor finished. Keep up the great videos.

Love all your work. Love watching old gear get a new life.

A beautiful job Adam, you've made a silk purse out of a sow's ear as we say here in the UK!

Getting healthy. Keep going

Love these laid back visits with you my friend.The new chopsaw is great. I never had one in the shop for long as truck drivers would try to cut series 7 chain with it and never had it clamped properly. Stuff flying everywhere as you can imagine. That 6 jaw really is something else. .001 over rgat length is nothing in the grand plan my friend. You and Steve Summers have made great progress with your K&N's. Onward fella !

Looking great, boss! Keep it up!

9:51 I use a depth gauge for setting up to cut short parts in the band before settings the work stop all the time. Those tools are handy for setting a table saw also.

You do good work! Its a shame your not here in the UK id pass a lot of work on to you.

Those magnetic edge finders are like some kind of magic.

We are loosing you a bit every week. Careful you don’t fade away. Well done. Have a merry Christmas and a couple of drams of the good stuff (Scottish single malt) that is.

i would love to see the guys faces at the electric motor shop when you walk in with the armature and end bells that are ready to install. i guess we will have to wait to see what they did with the windings..

Good job, on larger rotors you can finish turn the shaft first, but on smaller dia. Rotors they can bend / bulge at the ends , that’s why I always rough turn the shaft then press in then finish turn , that way all areas run true.

Off topic. Good to see you a half of your previous weight at least. Now I can see it is possible. 😁

Just an outstanding production. Thanks.

Very nice video and very impressive work as usual thanks for sharing.

Adam,, yes smigo. I definitely enjoy and learn so much from your videos. Thanks amigo, for your time and energy

What in life is better than fixing your K&T with your DoAll? I mean come on. Glad to see you're almost there. Ryan

That precision is crazy love it! Good you added the paypal donations!

It is enjoyable to see the results of the shaft replacement, looking forward to the completed motor restoration! What if anything else will you be doing to restore the remainder of the K&T? Your efforts to maintain and improve your machines and tools yourself show your passion for machining more clearly than any number of jobs by or for others. Finding new ways to put my appreciation into words is the most difficult part of commenting, as every video is excellent. You set the standard for great content every week, and exemplify self-improvement at the same time. Thanks for this series, and everything you do to share it with us!

Your manufacturing skill are awsome , there are things you cant buy that you can make from scratch !

Very nice job on your “Richard Roundtree”. Congrats on completion of a job well done. Thanks for sharing this.

That shaving on the way out is caused by tool deflection on the way in. Under steady feed pressure, the tool cuts the proper width but shifted off to the side. When you pass back out of the cut, the tool shaves the side that was deflected away from since there is now very little side pressure. (EDIT: And BTW, it will be climb milling on the way out.)

You are looking good Adam. Keep up the good job on your weight loss. If you gain some during the holidays don’t get frustrated and remember that it isn’t about some number on a scale, it is about how you feel and watching your clothing size change.

Great video Adam superb quality keep it up,you are an inspiration to this old machinist,coming up to 82 now and still getting out to my shop.Christmas greetings from Australia.Cheers Brian.

On the AMF machines in the bowling world they have three electric motors on them a table motor a sweep motor and a back-end motor all three motors are 1/3 horsepower a lot of people don't know that if you have trouble with your motor starting with a known good capacitor on it sometimes what you can do is the striations that are on the rotor, if you take a razor blade and just cut those not very deep just enough to separate it helps to bring the induction back to the rotor.. we had piles and piles of rotors in our back shop and because somebody didn't know what they were doing and figured the rotor was bad and just bought another one.. I reused and built many motors with only because the striations were connecting with one another Bringing Down the magnetic directional induction..😉

The Lewis Research Center one day after the National Aeronautics and Space Administration (NASA) was officially established. NASA came into being on October 1, 1958, and the National Advisory Committee for Aeronautics (NACA) Lewis Flight Propulsion Laboratory became the NASA Lewis Research Center.

Keith Rucker from vintage machinery just got one of those little metal devils too, seems like a cool saw

I always like your work Adam..nice work

Thanks Adam, iv'e learnt so much from watching you do lathe and mill work.

Very nice lathe work! I love to watch the lathe do it’s job. Motor shaft looks great.

i am about to do the same for a smaller motor, i remembered your videos and it helps a lot! thanks man :)

I know it's not directly shop related, but congratulations on the continuing weight loss.

The motor will be good as new, perhaps even better. Can’t wait to see it assembled and running.

I didn't have the proper scale the entire time......until the end then I realized how small the part was. In my mind the whole time it was being made I thought it was huge. Pretty cool though. And I learned a thing or two.

As always great video Adam.Thanks for sharing your time with us.Happy Holidays!!!

Adam nice work great video.

Looking good Adam, the weight is really coming off. Good for you buddy. On edit, I use a Morse blade in my Dewalt metal cutting saw, huge improvement over the factory blade.

When you drop that off at the motor shop they're gonna be like "hey while your at it".

Nice job, I actually use the same little depth gauge you showed... easy to use at the mill, then I measure it with my caliper; to get the depth.

Great share Adam , So ENJOYED ! Thanks man.. That motor will last for many years now !!

Hands down the best tools for the job. Wishmy company would buy this stuff.

Dude looking slim, good job!

Great video Adam and nice job on the motor shaft, i really enjoy your videos.