I’ve got a 1911 Singer 24-50 that someone has setup to use a motor for power, with both machine and motor mounted flat on a board. The motor is an old Kenmore type that takes the Kenmore 3-spade plug and control. It’s got a belt groove in the handwheel for the motor, plus the normal pulley that is designed to be powered from below. I don’t know if the extra belt groove was something that Singer offered, or it was milled by a previous owner. I’d love to have a handcrank model.
My spreadsheet says that it takes a 24-1 needle, but I’ve never tried sewing with it. I use it for decoration up on a shelf in the sewing room.
CD in Oklahoma