After reading Dan's letter, I had to go look at my machine. My motor is a clutch type (it says easy clutch) and it has variable speed from one stitch at a time to probably 200 mph. We have three machines and all have the same type motors. 2 Chandlers and a Pfaff. The only ones I've seen that are single speed are the old leather machines from the shoe shops and they are really slow. If it only has one speed you are going to want to change it for sure, you need variable speeds. Just push pedal down by hand an see if it speeds up as you push down.