I have a Consew 225 on a Pfaff table. I thought I could make a speed reducer that clamped to the square tubing table leg (many sewing tables have these). To adjust I could slide the reducer up and down. Doing this, the clutch motor does not have to be moved, the belt slot in the table does not have to be widened. I did have to move the bobbin winder back, move the motor pulley all the way right, and remove the belt shield on the motor. I had a 3/4 bore by 7 inch and 2.25 inch pulley, some 3/4 shaft, and some 6 inch channel. I would have preferred flat bar but had none. I oredered 2 $12.50 pillow blocks from Surplus Center, got 4. 3.5 x 3/8 bolts and nurs, and 2 pieces of 2 x 1/4 flat bar to clamp the reducer. Would have preferred square u bolts but could locate none. My cost with belts around $50 plus shipping. Can quickly change back to full speed if needed.