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Forum topic by woodworm1962 posted 03-04-2018 04:04 PM 694 views 0 times favorited 15 replies Add to Favorites Watch
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woodworm1962

145 posts in 520 days


03-04-2018 04:04 PM

I am looking for a 120 volt Motor that has variable speed that I can use to make make shift large lathe and other stuff with. So will need pullies and belts and bearing as well

Any advise

-- No one likes the truth...


15 replies so far

View Ripper70's profile

Ripper70

1290 posts in 1328 days


#1 posted 03-04-2018 04:13 PM

I’ve seen allot of those kinds of projects that use treadmill motors. You can usually find treadmills for sale on CL pretty cheap or, sometimes, people give them away just to get rid of them. DC motors up tp 2.5 h.p. are pretty common.

-- "You know, I'm such a great driver, it's incomprehensible that they took my license away." --Vince Ricardo

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woodworm1962

145 posts in 520 days


#2 posted 03-04-2018 07:21 PM

WOW thanks… BUT what is the point of having a MOTORIZED treadmill???? ARent you suppose to do the work?


I ve seen allot of those kinds of projects that use treadmill motors. You can usually find treadmills for sale on CL pretty cheap or, sometimes, people give them away just to get rid of them. DC motors up tp 2.5 h.p. are pretty common.

- Ripper70


-- No one likes the truth...

View Woodknack's profile

Woodknack

12842 posts in 2799 days


#3 posted 03-05-2018 12:54 AM

Keep all the treadmill electronics, you’ll need them. But it’s fairly simple to figure out.

-- Rick M, http://thewoodknack.blogspot.com/

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waho6o9

8674 posts in 2996 days


#4 posted 03-05-2018 02:24 AM

View Lazyman's profile

Lazyman

3543 posts in 1807 days


#5 posted 03-05-2018 03:22 PM

How big of a motor do you want? PSI sells one specifically designed to retrofit small lathes to variable speed but I think that it is only 1/2 HP.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View Andybb's profile

Andybb

1932 posts in 1023 days


#6 posted 03-05-2018 05:19 PM

If you type “free treadmill” into CL you will usually come up with a few. That’s what I did. Plenty of vids on youtube on how to set them up. Had to swap out the pulley in the headstock with the one from the treadmill. Spent $12 on an RPM meter.

-- Andy - Seattle USA

View Sloboy's profile

Sloboy

6 posts in 636 days


#7 posted 03-05-2018 07:42 PM

Just remember that most of the pulleys on the DC motor have reverse threaded nuts. I did not realize this, but luckily I didn’t pull out the cheater before I figured it out :)

The parts you need to keep are the motor, choke (transformer-looking thing) and the speed control board. To control the speed you connect a rheostat to the blades on the speed control board. I used a standard wall dimmer switch for my project. It was really easy to set up.

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Andybb

1932 posts in 1023 days


#8 posted 03-05-2018 07:51 PM

This was the most complete and helpful vid I found. Especially the part about the toggle so that it will start back up at the same speed vs having to reset it each time. Very handy. Here is my build. Went very smoothly.

My challenge was the pulley for the headstock. I didn’t want to mess with the pulley on the motor. Naturally, it was a V groove belt to start with vs the treadmill style flat grooved belt. I took the pulley from the treadmill shaft, used the lathe to turn a wood center to fit the pulley and drilled a 3/4” hole for the shaft but was not happy as it started to wear. Coincidentally, I bought a Laguna 1412 bandsaw last week. When I looked inside, the 3/4” motor pulley was the perfect replacement so I called Laguna and ordered one for $10.

-- Andy - Seattle USA

View woodworm1962's profile

woodworm1962

145 posts in 520 days


#9 posted 03-05-2018 08:13 PM

Nice work guys!

-- No one likes the truth...

View Fresch's profile

Fresch

434 posts in 2340 days


#10 posted 03-05-2018 10:26 PM

If you find a Shopsmith 10er it’s cast iron and all set up with 3step pulley.

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Andybb

1932 posts in 1023 days


#11 posted 03-05-2018 11:56 PM

Or, you can find a v-belt pulley that will fit on the treadmill motor. You just don’t need the step pulley with the variable speed motor. Matching them either way will work.

-- Andy - Seattle USA

View MalcolmLaurel's profile

MalcolmLaurel

300 posts in 2042 days


#12 posted 03-06-2018 01:38 AM

I did a treadmill motor conversion on a metalworking mill/drill last year. Worked great. I just modified a single pulley to attach to the motor’s original flywheel/pulley.

-- Malcolm Laurel - http://MalcolmLaurel.com

View Woodknack's profile

Woodknack

12842 posts in 2799 days


#13 posted 03-06-2018 04:28 AM

View Andybb's profile

Andybb

1932 posts in 1023 days


#14 posted 03-06-2018 04:55 AM

The red wire from the motor is the one you put the toggle in to switch it on and off without having to reset the pot.

-- Andy - Seattle USA

View MrRon's profile

MrRon

5571 posts in 3663 days


#15 posted 03-06-2018 07:19 PM

Here is a place that sells treadmill motors. They also have controllers for them. http://www.surpluscenter.com/Electric-Motors/DC-Motors/Special-Purpose-DC-Motors/

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