A linkage coupling a drum foot pedal rotor to a drum beater apparatus
comprising in combination an elongated link, a first universal joint
coupling the rotor to the link, and a second universal joint coupling the
link to the apparatus, at least one of the universal joints coupling
first and second components relatively rotatable about a transverse axis,
two transversely spaced bearings carried by the first component, each
bearing including annular inner and outer races and bearing balls located
between the races, there being members tightly coupling the inner races
to the second component at transversely spaced locations, whereas the
inner races are offset transversely relative to the outer races to
thereby clamp the balls transversely between the races, and immobilizing
means joining the outer races to the first component, and/or the members
to the second component.