Hey, did you know the throat on a sewing machine is usually more than 51/2 inches? This means you can sew booklets and signatures printed on your computer printer. I did one last night.
Short of refitting a stepper motor, how could I make progress toward the goal of having the knee lever on my Sears Kenmore 1750 sewing machine (36 years old) control the speed of the motor more directly, rather than controlling the power input to the motor?
Sure I can oil the machine.
I was wondering if adding a cap bank to reduce the supply impedance during stalls would make a difference.
And it seems adding a bump of epoxy putty to the flywheel that would operate a leaf switch with adjustable dwell to put a variable extra resistance into the circuit at top dead center would also make a difference. This would tend to stall the machine at TDC then complete one stitch at a time.
Any ideas for sewing machine tweaks and mods?
Doug Goncz Replikon Research Falls Church, VA 22044-0394