Smaller (50mm) Motor Pulley for Mitsubishi Sewing Machine DB-130

This is a smaller replacement motor pulley for a Mitsubishi Model DB-130G industrial sewing machine.

This sewing machine is insanely fast with the stock motor pulley. It is a little too fast for normal home use by an occasional user. This 50mm motor pulley replaces the 109mm stock pulley and reduces the max speed of the machine by a bit more than 2X. This is a common modification as they sell belt and pulley sets for just this purpose.

The Inventor 2018 file is included so that you can ed