Miki pulley Driven pulley (without belt)

PDS uses two types of shifting pulleys to shift gears without changing the distance between the shafts.
(Uses AK type / PE type pulley) When the shift handle of AK type (drive side pulley) that can forcibly open and close the pulley is turned by the feed screw to change the pitch diameter of the belt on the pulley, the spring is changed accordingly. Since the pitch diameter of the PE type (driven pulley) used also changes, it is possible to shift gears without changing the distance between the shafts. Turn the shift handle to the right for slower speeds and to the left for faster speeds.