An enhanced bass drum pedal is provided with an eccentricity-adjustable cam system
comprising a cam core mounted on a rotating shaft, a cam member rotatably connected
to the cam core by a first pin, a positioning member rotatably connected to the
cam member by a second pin, and a set screw. The positioning member is fastened
onto the cam core by the set screw at a selected position of the positioning member
to adjust the eccentricity of the cam system relative to the axis of rotation.
As a result, a user can readily alter the impact force acted on a drum head and
the restoring force applied to the foot board thereby tuning the bass drum pedal
to suit the user's playing style and ability.
