So I bought a Sherline, need a motor

S

skogkatt007

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It's an older 1, with the long/wide tailstock, and silver dials. Seems to be in really nice shape, but no motor. I have a couple of small ac motors here I'm thinking I could get by with. I am NOT laying out hundreds more for the motor/speed controller. I'll just make do with what I have for now. Eventually upgrade to "a" dc motor and controller. Nothing against the Sherline unit, just for the money I can get a brutal combination.

Please don't lecture me about buying a new motor from Sherline. My purpose in posting is to see if anyone has fenagled a motor, ac or dc. Taig sells a set of 6 step pulleys that may prove useful.

I have a really small Dayton motor, 5000rpm, that may be underpowered. Also have a 1/20HP Boston Gear motor, 1750 rpm. Very beefy looking. Have another 12vdc motor by Bosch that realistically looks as large as a Sherline motor. Maybe 10,000rpm. As I've said I'm looking to hear from Sherline/Taig/Unimat 3 owners that have substituted non-standard motor setups.
 
Sorry just have the stock motor on mine, but yeah the replacement Sherline motor / speed control is not cheap.

The current motor is 60w or about 1/12hp. The older version used a 1/8hp motor.

My little watchmaker lathe uses a 1/15hp Universal motor, if that is what your Dayton motor is that might not be a bad place to start.
 
Correction. The little Dayton motor says 1/15 HP, 1.2 amps, 115vac, 5000rpm. The much beefier Boston Gear unit says 1725 rpm, 1.35 amps at 115vac. Not really understanding how the little motor is more powerful, significantly. I should point out the BG motor says ".05 TE" for HP. The little Dayton motor looks like it's fit for a sewing machine. The BG is about 4.5" in diameter, 7" long.
 
So substituting a slower rpm motor for a faster one simply requires enlarging the motor pulley (or shrinking the spindle pulley, or a combination of both)? Is it that simple? A larger motor pulley should mean more power to the spindle, no?
 
Here's the Dayton motor:

www.ebay.com

Dayton 2M033 Universal Ac/Dc Mtr,1/15Hp,5000 Rpm,115V | eBay

Class A, Max. Ambient Temp. 40 Degrees C, Motor Shaft Rotation CCWSE, Motor Enclosure Design Open, Motor Mounting Type Hole, Motor Mounting Position All Angle, Finish Unfinished, Number of Shafts 1, Shaft Dia.
www.ebay.com

And here's the BG:

www.ebay.com

Boston Gear Electric Motor 25E690W021 | eBay

Find many great new & used options and get the best deals for Boston Gear Electric Motor 25E690W021 at the best online prices at eBay! Free shipping for many products!
www.ebay.com
 
There are plenty of writeups on using a treadmill motor. Check Craigslist and Marketplace. Free to $40. Look for older models they will have those 3/4 to 1.5 HP.

Sent from my SM-G736U using Tapatalk
 
skogkatt007 said:
So substituting a slower rpm motor for a faster one simply requires enlarging the motor pulley (or shrinking the spindle pulley, or a combination of both)? Is it that simple? A larger motor pulley should mean more power to the spindle, no?
Click to expand...

I think that is correct. The 1/4hp motor Taig offers is also 1750rpm so a set of the Taig pulleys with the BG motor would probably work OK if they could be made to fit the lathe and motor.

That would give you a good range of speeds.Taig parts are also fairly inexpensive.

Is the BG motor also variable speed?
 
Those are both 115vac motors. Neither is variable speed. I could lower the speed with Variac. But you lose torque that way I'm told.

The Dayton is listed as an ac/dc motor. Or in that series. Whatever that means. But at the end.of the day both do their stuff at 115vac.
 
skogkatt007 said:
It's an older 1, with the long/wide tailstock, and silver dials. Seems to be in really nice shape, but no motor. I have a couple of small ac motors here I'm thinking I could get by with. I am NOT laying out hundreds more for the motor/speed controller. I'll just make do with what I have for now. Eventually upgrade to "a" dc motor and controller. Nothing against the Sherline unit, just for the money I can get a brutal combination.

Please don't lecture me about buying a new motor from Sherline. My purpose in posting is to see if anyone has fenagled a motor, ac or dc. Taig sells a set of 6 step pulleys that may prove useful.

I have a really small Dayton motor, 5000rpm, that may be underpowered. Also have a 1/20HP Boston Gear motor, 1750 rpm. Very beefy looking. Have another 12vdc motor by Bosch that realistically looks as large as a Sherline motor. Maybe 10,000rpm. As I've said I'm looking to hear from Sherline/Taig/Unimat 3 owners that have substituted non-standard motor setups.
Click to expand...
pics or it didn't happen
 
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