Got this old singer 331k4 to do the canvas work I wanted to do on van. It’s a straight stitch industrial , clutch motor ,very fast.
I got it working ok, and learning to use it. Did I say it was fast? You that know, know that many convert the clutch motor to a more controllable dc servo motor. Or use jack shaft pulleys. Maybe one day, right now I have enough low speed control to do what I want.
Will punch through 1/8” leather even with fabric needle. Low speed control will be very very advisable if I’m going to do more leather. No second chance with leather.
shooftie 
#1 by coryjhughes on July 15, 2024 - 9:16 am
sometimes you can restore some of the sensitivity of the clutch motor by dressing the mating surfaces. There are a couple bolts that hold on the clutch side (where the lever arm presses) and the mating surfaces can be abraded to break the glaze. I have had some success doing this in the past.
#2 by albell on July 16, 2024 - 7:07 pm
Hi Cory,
Yeah good idea. I’ll give it a go. Machine came with spare motor and clutch so I can practice the disassembly on that . Right now my foot is better trained and I have right hand on the machine pulley wheel to moderate the initial throttle tip in 🙂
Sewing is fun but it’s hard too. Cheers, Alistair