I found some motors here:
Industrial Sewing Machine Clutch, Servo, and Brushless Servo Motors
I don't have a photo
available just now but the Singer has some kind of service
door in the back; anyone knows if a suitable motor
could be installed there?
(link here for a similar model showing the door):
Singer Industrial Sewing machine zig zig thread Great Condition | hobbies, crafts | City of Toronto | Kijiji
apparently motors for this model apparently locate under the machine just like here:
Amazon.com: SINGER 20U109 Complete Industrial Commercial-Grade ZigZag and Straight-Stitch Sewing Machine: Arts, Crafts & Sewing
but in my opinion this type of setup becomes too bulky and space consuming in a sailboat. I would really like to see a more compact design, so anyone knows if a suitable motor can be mounted in a more compact manner to this machine??
Another Q about motors, am I correct to say that clutch
type motors can be described as " on/off high speed motors", and servo motors are more for slow speed detailed work when accuracy is needed?
Pardon me but I'm new to this but need a sewing machine!