My 132K6 came with a danish clutch motor that I had no way of controling the speed of. As I looked for a solution I came up with this servo motor. I had looked at speed reducers, but as the clutch motor has a rather large wheel I decidet for the servo motor. It did not disapoint me, it starts and stop rather smoothly. No jolting, I wrote before that it has lower limit of 300 rpm, that is not right (my bad) It is adjustable so that max speed can be 300 to 3000 rpm. From zero to what ever I decide. And as the wheel is just 65 mm it works well.
Now I have to work on the sewing machine as there are some things that need adjusting.
Best wishes
GK