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The voltage doesn't matter - it's the power that counts. I reckon for the DB/SL and U3 about 100 to 150 watts is fine. I wouldn't go for more. The treadmill motors I see on Ebay are much higher power,

It’s all in the gearing!

Look at motors for invalid/elderly scooters. They're mostly 24 VDC, compact, and quite powerful. They can push a 300 lb person up a hill! Neil -----

here in Cleveland we have HGR a resale place from lathes to pieces. I have both the controllers for my SB 10H and others I can reduce my speed to 5 revs, but you better get one rater more than you AC

I have a DC motor control rated at 90 volt input. ?I have not found a reasonably priced motor to pair it with. Most likely a treadmill motor would work but they are expensive on EBay. Dick

Kool - I really liked Grimm... -Guy-

I was undoubtedly lucky, but I just used my eyes and hands to straighten my leadscrew... -Guy-

There are also taps and dies that do not cut metal, but just push damaged threads back into correct position. -Guy-

I know what you mean and I have already advised other people not to go mad and fit huge motors to little lathes. The standard Basic/PC motor is 40 W, and is generally thought to be too weak. The DB/SL

Used my UniPCs to make tools and parts from steel, titanium, brass as well as POM and other plastic materials since the Uni came out. Both, the manual and CNC have still their original motors Found

The standard motor is 48 mm diameter. The holes it fits through are not much bigger, 52 mm I think, and there is not much scope to open them up. Once the motor gets much bigger their is nowhere to put

OP has a PC. A little more difficult to re-motor because of the way the motor attaches.

Good to hear it's been used. My Unimat SL looked like it had never been used when I got it last year. It must be older than your 3.

Keith, I share your frustration in trying to get data on the R/C model motors. They seem to operate in some non SI universe. Should you succeed in ferreting out the specs please share it.? Baffled

Hi Keith Thanks for the reply. What is the actual size is the motor that comes with the Unimat PC. I was thinking of putting a 24v DC motor is as they are very popular, but if they are too big it's a

yes its a unimat 3, i have had it from new back in the 1970's its been loved and used then sat for years and is now back being loved and used.

Hi Peter. Thanks for the photos. It looks a nice setup. Is that a Unimat 3?

I intend to replace the motor on mine soon. I searched for a long time before I came to the conclusion you can't get a more powerful motor that fits in the hole for the original one, unless you go to

no the motor i had was just fixed to the base board i have on the lathe, and then i joined a polyethelene belt to the right length.

Thanks Peter. Did the mod need any special machining to mount the motor any further away? I don't suppose you have any photos do you?