Treadmill Motor for the Mini Lathe

  Рет қаралды 54,546

Robert Adair

Robert Adair

Күн бұрын

Пікірлер: 123
@stefanomazzoleni4603
@stefanomazzoleni4603 2 жыл бұрын
If you over power the lathe without changing the plastic trasmsission gear located inside the box spindle support, with new stronger gears driving the spindle, you will soon wear them and have a major seroous fault.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
That's a good point. Mine are metal and I've modified my headstock so that the gears sit in an oil bath. I did this right after I got the lathe. But it's a really good point for others to keep in mind.
@johnrussell6620
@johnrussell6620 2 жыл бұрын
@@RobertAdairWorkshop How about a video on the oil bath setup? I have seem dozens of mini-lathe upgrade videos, but not that one!
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
@@johnrussell6620 I've been thinking about doing a video on it. It wasn't the most straightforward modification but one that I've been quite happy with. That's a good idea. I think I will!
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
In the interim, here's one of the posts on my blog where I show what I did. There are quite a few of them but if you start with this one, you'll find the others. radare.net/2021/02/oil-lubrication-for-the-mini-lathe-primary-shaft
@johnrussell6620
@johnrussell6620 2 жыл бұрын
@@RobertAdairWorkshop ​ I read through the referenced links and have a couple of suggestions... 1. Use of automotive engine oil is not good. It has detergents and surfactants that will keep debris generated by the rubbing action of the gears inside, in suspension, that will go round-n-round again-and-again, grinding all the way, all the time. You need to use "non-detergent" oil inside an oiling system operating without an oil filter as these debris will be allowed to eventually fall to the bottom and stay there... 2. You could remove the inner rubber seals on the spindle bearings to allow oil splash to get inside these main bearings... 3. You could use angular contact, or, tapered roller bearings once you get your main spindle oil seals worked out. Excellent ideas and execution, similar to my plans for my lathe!
@stancooper5436
@stancooper5436 2 жыл бұрын
Beautiful bit of craftsmanship there brother. Best treadmill motor install I've seen.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
That's real nice of you to say, Stan Cooper. Thank you.
@GlennNowOnYouTube
@GlennNowOnYouTube 2 жыл бұрын
Very nice job. A very professional look to your work. Enjoyed every bit of this video. Thanks for sharing.
@yertelt5570
@yertelt5570 2 жыл бұрын
Great job!! I really like the fact that it was a direct wire up. Seems like every other mini lathe motor upgrade video involves wiring up new controls and or a new power supply. 👍👍
@dandesjardins6875
@dandesjardins6875 3 жыл бұрын
Great attention to detail, and really well explained!
@RobertAdairWorkshop
@RobertAdairWorkshop 3 жыл бұрын
Thank you, Dan Desjardins. That's really nice to hear.
@Motocue912
@Motocue912 2 жыл бұрын
Very nice job , I’ve owned probably 10 mini lathes as I build pool cues and use them to put tips on . I did notice you using the compound slide , My suggestion swing that over at 29° and lock it out By snugging up the gib. The reason I say this is you will get a lot more rigidity , you only want to use the compound slide for tapers and to assist in threading. Otherwise great job.
@middleway1885
@middleway1885 Жыл бұрын
What a glorious find!!! Cheers!!
@Forge5894
@Forge5894 Жыл бұрын
Bravo, excellent video, thank you!
@mirosawkrzysztofczyk4788
@mirosawkrzysztofczyk4788 3 ай бұрын
Dziękuje Panu za film długo myślałem jak to zrobić a tu pan rozwiazał mi problem z zamontowaniem silnika szacunek dla pana prosze wiecej filmów...
@RobertAdairWorkshop
@RobertAdairWorkshop 3 ай бұрын
Thank you.
@kamilotapowicz7427
@kamilotapowicz7427 Жыл бұрын
Wow, amazing work!
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
Thank you!
@kwayne1125
@kwayne1125 2 жыл бұрын
Hey, I'm surprised I haven't seen your channel before and I think you've convinced me to upgrade. A couple things that can cause that arcing is the temper of brush spring is sprung from overloading heat (spring conductors) and brush crud between the armature coppers. It's usually a sign you need to turn your armature but a simple inductance measurement across the brushes will tell you if its shorted inside. But make sure there's no graphite crud in it first. It really messes with rpm controllers.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Thank you, K Wayne. That's really good info. I still have that old motor on the bench. I'll put the meter on it and see what I find.
@ralphjennings9064
@ralphjennings9064 2 жыл бұрын
Good design and good information.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Thank you, Ralph.
@markkoons7488
@markkoons7488 2 жыл бұрын
Nice video and timely for me. Thank you.
@raystevens687
@raystevens687 Жыл бұрын
I think you did a great job thanks for sharing
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
Thanks for watching!
@uguyssss
@uguyssss 2 жыл бұрын
Did I miss something? How did you wire the motor and control? Nice job,tho!
@checopacheco420
@checopacheco420 Жыл бұрын
Super good stuff 🎉
@QwikKota
@QwikKota 2 жыл бұрын
Nice work, came out great.
@gwater12345
@gwater12345 4 ай бұрын
Normally, carbon brush is replaceable. However, BLDC motor is recommended for future revises.
@Jameson4327
@Jameson4327 2 жыл бұрын
Impressive!
@kevino6670
@kevino6670 2 жыл бұрын
Well Done! I predict a bigger lathe in your future.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Ha! There’s a 12” Atlas lathe on my workbench right now. It’s a project that I’ll share with you soon. You called it!
@airrifletech8085
@airrifletech8085 Жыл бұрын
Quality, nice job
@JohnThawley
@JohnThawley 3 жыл бұрын
I've been planning to make this upgrade but I had no idea using the existing controller was an option. That's the most intimidating part of the project to me. My modest electrical knowhow doesn't go much past running romex to a new breaker...
@RobertAdairWorkshop
@RobertAdairWorkshop 3 жыл бұрын
Hey, John. The only thing to watch out for is that your voltage matches the voltage of your existing motor and that you don't pull too many amps through the DC controller. Wiring is straightforward. Two wires and a ground and if you get them hooked up backward, the motor will just spin backward. Good luck with your conversion.
@JohnThawley
@JohnThawley 3 жыл бұрын
@@RobertAdairWorkshop thank you sir.
@gvet47
@gvet47 2 жыл бұрын
@@RobertAdairWorkshop I'm just surprised the controls worked for the bigger motor. Normally even the fuse would not handle more current. You probably needed new brushes on the original motor to maintain the brush tension. Cleaning the commutator as it developes bridging from arcing.
@Houseworksaws
@Houseworksaws Жыл бұрын
Wow impressive video.. Really fantastic results. Thank you for taking the time to document this project.
@rafkend1422
@rafkend1422 Жыл бұрын
You built a tank which you did not have to really. Great job regardless, I wish you had changed all the plastic gears to steel gears as well.
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
That was the first thing I did to the lathe when I got it. Change gears and headstock gears are both metal. Check out my lubricated headstock video. It shows better what gears I used. I think you'll like it. kzbin.info/www/bejne/eKWTZ31mgLqIpqs
@paulsurbanhunter2457
@paulsurbanhunter2457 4 ай бұрын
I think you need to reverse the polarities inside your welder. Your welds will look a lot better. Thanks for the video.
@RobertAdairWorkshop
@RobertAdairWorkshop 4 ай бұрын
I'll give it a shot.
@McKildafor
@McKildafor 2 жыл бұрын
Just found this channel and just subbed. Looking forward to seeing some more!
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Thanks Marco. Welcome!
@binomair9326
@binomair9326 2 жыл бұрын
Nice work I did the same stuff a long time in 2012 but if you like to keep this mini lathe I advise you to change the back gears from plastic to steel or aluminum for heavy cutting u can buy it from eBay ...good luck
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
That's good advice. I had changed them to steel gears when I first got the lathe. I no longer have the mini lathe, though. I put together an Atlas late (there's a video on it) and it replaced the mini lathe.
@mxcollin95
@mxcollin95 3 жыл бұрын
Great job! 👍
@RobertAdairWorkshop
@RobertAdairWorkshop 3 жыл бұрын
Thank you!
@77jerufe
@77jerufe 2 жыл бұрын
Good job, the DC motor control is other, or is equal old motor
@markstevens7211
@markstevens7211 2 ай бұрын
Hi, wondering what gearing you think works best for this application, ie the ratio between driven and the drive pulley.
@paulfreed6394
@paulfreed6394 2 жыл бұрын
Very nice👌
@michaelevans2989
@michaelevans2989 Жыл бұрын
Great video. I'm doing this to a craftsman 109 i picked up. Since it's been a year how has that. Motor held up in the enclosure those things heat up a lot.
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
Honestly, I don’t have the Mini Lathe anymore. I replaced it with an Atlas 12”. But it ran great while I had it. The fan on the treadmill motor did a good job pulling air through the shroud.
@michaelevans2989
@michaelevans2989 Жыл бұрын
I'm glad to hear that. Cause like you i want a shroud covering it that will match the powder coating of my lathe when I'm finally finished with it. Yeah i just finished watching your Atlas build videos. Have to say I'm enjoying your work.
@jakechoi2359
@jakechoi2359 Жыл бұрын
How do you mount the chuck on the mini rotary table ? BTW, Thank you for the video.
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
Studs and magnets. The studs that are already on the chuck fit into the rotary table just fine. They worked to make sure it was aligned correctly. Then I used large neodymium magnets to hold the chuck to the table.
@JohnThawley
@JohnThawley 5 ай бұрын
Haven’t seen any updates on the mini lathe since you did the treadmill upgrade. Do you still have it and use it? Does it excel at anything over the Atlas? Love to hear your thoughts and perspective since it’s been a while.
@RobertAdairWorkshop
@RobertAdairWorkshop 5 ай бұрын
Hey, John. No, I no longer own it. I sold it to guy on Craigslist last year, just about broke even. The Atlas lathe is just quite a bit bigger than the mini lathe was so I can do a lot more with it, and the 3/4hp motor and VFD gives it plenty of power. The mini lathe did a lot of good work for me. I turned down the shafts for the surface grinder with it, made a number of bicycle parts and it even fixed a defective harmonic balancer in a pinch, when I needed it. I've no disappointment with the mini lathe. The Atlas is just a better tool for what I use a lathe for. But the Atlas also cost about 5X what the mini lathe did and it takes up a lot more space in the shop.
@MrSamonkel
@MrSamonkel Жыл бұрын
Very good
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
Thanks Ralf.
@kendonahve924
@kendonahve924 2 жыл бұрын
Thanks! I just got my Chinese mini lathe. Once I get accustomed to it I'll decide if I want to upgrade the motor. Can you say how much parts cost?
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Hey, Ken. It's been a while since I've done this one. Treadmill motor was an eBay find, $40. The XL pulleys and belt were in the $30 range on Amazon. And the steel was probably another $30. The 3/16" I used for the mount was kind of expensive. That totals about $100 not including the couple weekend's worth of labor.
@jackmefford6902
@jackmefford6902 Жыл бұрын
Just broke a belt on mine and it doesn’t have enough power. Where did you get the belt and pulleys? I have a treadmill motor I want to use.
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
Amazon and eBay. They are XL timing belts and pulleys. 3/8 width. Number of teeth and belt length contingent on what your ratios and dimensions need to be.
@tommypugh1208
@tommypugh1208 Жыл бұрын
Why didn't you show how you hooked the belt to the spindle
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
That’s what is happening at 14:27. My lathe is a 2-speed model . The belt drives the intermediate shaft. The shaft drives the spindle via spur gears inside the headstock.
@anthonyalleyne8724
@anthonyalleyne8724 2 жыл бұрын
Great video!! Why is it humming?
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
You know, I really don't know. It's always done that from new. I figured it was some sort of capacitive discharge and assumed they all did it. I'm guessing that's not the case?
@anthonyalleyne8724
@anthonyalleyne8724 2 жыл бұрын
I figured out the issue with humming! I think you need a ferrite core between the treadmill motor and bridge rectifier, dimensions are 38x19x13mm ferrite core.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
@@anthonyalleyne8724 Awesome, Anthony. Thank you. Looks like I can get one on eBay. I’ll snag it and give it a try. Appreciate it.
@anthonyalleyne8724
@anthonyalleyne8724 2 жыл бұрын
kzbin.info/www/bejne/imOVoX2DfqZ8iLM
@anthonyalleyne8724
@anthonyalleyne8724 2 жыл бұрын
Watch this guy he would explain the ferrite core to motor.
@david-the-aspergian8977
@david-the-aspergian8977 2 жыл бұрын
You didn’t show fitting the belt, though you mentioned an idler shaft.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Belt runs from the motor directly to the lathe drive pulley. On the two-speed headstock, it connects onto the intermediate shaft. Single speed spindles do not have the intermediate shaft.
@puntoyfinal2553
@puntoyfinal2553 2 жыл бұрын
Muy muy bien 👌
@AVmanKP
@AVmanKP 2 жыл бұрын
Вы справились с поставленной задачей, но есть очень важный момент, который Вы не учли: станина в штатном месте крепления двигателя имеет "карман" (по сути, это консоль), как следствие - она нежесткая с этом месте, Вы освободили это "карман", а двигатель (более тяжелый, учтите также вес кронштейнов и защиты) вывесили еще с большей консольностью, чем неминуемо скрутили станину, передняя бабка тоже сместилась, в сторону консоли. Мои советы: 1) Программа минимум - добавьте еще одну опору под двигателем , снимите часть консольной нагрузки со станины через эту опору на стол . 2) Программа максимум - изготовьте пластину-имплант из стали 10-14 мм, установив его в освободившийся "карман от двигателя", тем самым ужесточив станину на порядок, а уже к импланту прикрепляйте переделанный кронштейн с двигателем, в этом случае дополнительную опору под двигателем можно и не делать.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Really good advice. I hadn't considered additional bracing. Thank you.
@AVmanKP
@AVmanKP 2 жыл бұрын
@@RobertAdairWorkshop I will be glad if you implement this proposal in your design - both for increasing the rigidity of your machine, and for the viewers of your channel who will learn how to improve their lathes. I wish you not to stop there, you have interesting ideas and you implement them with high quality.
@NickShl
@NickShl Жыл бұрын
What size tool post do you have? OXA or AXA?
@RobertAdairWorkshop
@RobertAdairWorkshop Жыл бұрын
It was an oxa.
@orion7353
@orion7353 2 жыл бұрын
How do you keep the collet chuck in the drill press when side loading (cutting)? There no room for a draw bar?
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
On this old drill press mill, I turned the end of the spindle down to 12mm and hard-pressed the collet chuck onto the spindle. There's a setscrew there, too, but the tight press fit is what is keeping it in place.
@cfnaround1585
@cfnaround1585 2 жыл бұрын
I was thinking of getting a sewing machine motor to upgrade my lathe. Is 750watt 1HP too much or will that work fine?
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
That's probably the perfect size. Mine is only a 1/2HP unit. I went with that since it was the same size as the original and I didn't want to cook the controls. But should work out, especially if you use a sewing machine control and pedal. If the sewing machine motor is AC current, you won't be able to use your existing controller as it's DC, so keep that in mind.
@cfnaround1585
@cfnaround1585 2 жыл бұрын
@@RobertAdairWorkshop I ordered it. I also got the tapered roller bearings and metal change gears. I also picked up sealed angular contact bearings. My thought is to start off with those, then upgrade to a sealed bath later down the road as I get enough tooling to complete the job.
@uwewatermann5463
@uwewatermann5463 2 жыл бұрын
Hallo ich habe ne frage hast du die elektronick auch geändert mfg Uwe Watermann
@c2jacks
@c2jacks 2 жыл бұрын
Where did you get the gear that goes on the Treadmill Motor?
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
Amazon. I looked for XL pulley. Looking at my order history, it seems I ordered 6 of them. They were all Uxcell branded. I don't remember which one I ultimately went with, though. I had to bore it out and face it.
@c2jacks
@c2jacks 2 жыл бұрын
@@RobertAdairWorkshop Thanks. I am about to do the same thing, I have a treadmill motor but I am concerned because of its weight that it can add its own distortion? I have a 7 Gauge steel table and will mount a steel box to it and then the only connection between the motor and the lathe is the belt and electrics. The lathe is already bolted to the same table. I have a single speed so my motor has to be higher up than yours to get at the drive within the lathe without the belt intersecting bolts within the cover. So higher and heavier may caused more problems bolted to the frame. I also got a 750mm belt so I am able to clear the levers I have. I enjoyed your video! Thanks very much for doing it.
@hedning003
@hedning003 2 жыл бұрын
what's the point of putting a colletholder in a 3jaw? ?
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
For the fun of it.
@mfs5493
@mfs5493 2 жыл бұрын
Why did you hold the bolt in a collet? It isn't concentric as it's held in the same inaccurate 3-jaw chuck!
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
I wanted to try it out. It was concentric enough to turn the head off of a bolt. Just playing around.
@Pushyhog
@Pushyhog 2 жыл бұрын
what motor would u link to us if you had any choice??????
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
I don’t have a specific link I can post. Look on eBay or Amazon for a “90v DC motor” or “90v treadmill motor”. Look for one that runs around 2500rpm and is the same HP rating as your DC controller. Those are the three important characteristics: Voltage, HP (or kW) and RPM.
@minskmade
@minskmade 2 жыл бұрын
you can find free treadmills on craigslist and facebook market place all the time...you can actually use the treadmills speed controller also...kzbin.info/www/bejne/qH-cf56cYteZZ68
@someotherdude
@someotherdude 2 жыл бұрын
I take your question to be more wide open than the others who answered. Going AC 1 hp along with a quality VFD would be the way to go. Also having a separate cooling fan that is on at any motor speed may be needed. If you are turning the motor very slow, it's own cooling fan isn't doing anything.
@hdooley
@hdooley 2 жыл бұрын
Leave enough space for airflow through the motor on the inner fan shroud!!!
@hdooley
@hdooley 2 жыл бұрын
Ok looks like there enough space on it later in the video...
@SergeiPetrov
@SergeiPetrov 2 жыл бұрын
Editing a video about the operation of this machine devalues everything.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
I guess I can understand that. The video was getting to be quite long and cutting the head off of a bolt can be boring. I released a video a couple weeks ago where I rebuild a 6" chuck. In that one, I did quite a bit of work with it on the Mini Lathe with the new treadmill motor. That 6" chuck is heavy and the Mini Lathe handled it well. You might check it out to see how the treadmill motor worked out on a bigger project: kzbin.info/www/bejne/b3K6cmiEdrGFntk
@Dodi-nz3fd
@Dodi-nz3fd 2 жыл бұрын
@@RobertAdairWorkshop , Please address the dealer/distributor of this mini lathe, in *Indonesia* .
@LE-6920
@LE-6920 2 жыл бұрын
The headstock of your lathe is hanging in the air, cause chineses were made it such. The first, which you was needed to make - give rigidity to it and only then invent a new motor mount. But with mount, which you was made, you just twisted a lathe bed down...
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
It's bolted to a metal table with four M8 bolts. It's pretty stoutly mounted. But that's a good reminder for others who may do the same thing, especially given how much weight this adds to the back side of the lathe.
@LE-6920
@LE-6920 2 жыл бұрын
@@RobertAdairWorkshop Four M8 bolts is nice. But... I'll not convince you of anything and prove nothing. An ordinary bubble level will show you all... I highly recommend you to check with it along the V-guides of the carriage... Of course, check position of tabletop firstly...
@Pushyhog
@Pushyhog 2 жыл бұрын
u still have the mother board and they cost.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
KB Electronics makes a DC motor controller that I’ll use when mine dies. KBMD-240D. It has the potentiometer built in and matches voltage and amperage specs for the treadmill motor.
@robert5
@robert5 2 жыл бұрын
Do not use treadmill motors unless you find a commercial type higher quality treadmill motor and if you might need to buy a DC controller, then don't bother. Buy a small 3 phase motor 3/4 hp or 1 hp or what ever you need. I like the 1 hp motors as the VFD of that size is cheap. MUCH BETTER. I did a conversion on a old craftsman 12: lathe with a 2 hp DC motor. Though it worked out great I later gained a lot of experience with 3 phase motors and VFD controllers. MUCH BETTER CHOICE. More common easy to find and usually far better quality then the Chinese treadmill motors.
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
I like my treadmill motor. But I have a 3-phase on both my Atlas and Walker Turner and it is the better way to go. Downside is that the equpment is large so the mini-lathe looks like a toy next to it.
@stewartfrye
@stewartfrye 2 жыл бұрын
I'm not surprised, that "LATHE" will barely cut plastic much less metal, you get what you bought. garbage
@RobertAdairWorkshop
@RobertAdairWorkshop 2 жыл бұрын
You're wrong!!! I've had this lathe for 2 years and have cut everything from brass to steel on it. Look at some of my other videos and you'll see what I've done with it.
@Ketis1985
@Ketis1985 2 жыл бұрын
@@RobertAdairWorkshop yeah. With good sharp tooling, right rpms, correct feed rate and light cuts you can machine pretty much any material with small lathe.
@marcobotha9376
@marcobotha9376 2 жыл бұрын
@@RobertAdairWorkshop I feel your pain Always get picked on you have crap but cant expect everyone to have 10K for a industrial lathe
@panjandrum.conundrum
@panjandrum.conundrum Жыл бұрын
Have you ever watched Clickspring? It's astonishing what you can do with a minilathe. You won't believe his stuff.
@bustednuckles2
@bustednuckles2 3 жыл бұрын
Turned out nice but man was that a project!
@RobertAdairWorkshop
@RobertAdairWorkshop 3 жыл бұрын
it was a lot more work than I thought. Could have saved a lot of time with the shroud if I just made it a single-piece rectangle. Thank you for the compliment!
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