Vibraphone Speed Controller

This is a pedal that I made to control the motor speed of the fans in a vibraphone.  It’s designed to fit any Musser frame’s motor and pivots side-to-side so that the player’s full weight is supported, leaving the other foot to press the sustain pedal.  The fans move slower when turned to the left, faster to the right, freeing both hands to play as the vibrato is increased or decreased.