Musical instrument pedal

A musical instrument pedal comprising:

• a base;
• two supporting posts mounted uprightly on the base;
• a pedal plate mounted on the base between the supporting posts and having
• a rear end mounted pivotally on the base;
• and
• a fore end defined opposite to the rear end and lifted over the base;
• a shaft mounted rotatably on and between the supporting posts and having at least one friction ring mounted securely around the shaft;
• an elevation-angle-adjusting assembly mounted detachably on the friction mount of the shaft, selectively changing an angle thereof relative to the shaft and having
• a lower clamping jaw having a mounting hole defined through the lower clamping jaw;
• an upper clamping jaw connected to and cooperating with the lower clamping jaw to detachably clamp the at least one friction mount of the shaft, the upper clamping jaw being formed by a curved segment and a flat tongue segment protruding from the curved segment, the upper clamping jaw having a fastening hole defined through the flat tongue segment of the upper clamping jaw;
• and
• a pad mounted detachably on the upper clamping jaw so that the flat tongue segment of the upper clamping jaw is located between the lower clamping jaw and the pad, the pad having a threaded hole defined through the pad;
• a chain assembly connected to the fore end of the pedal plate and the elevation-angle-adjusting assembly and having
• a fastener mounted detachably on the pad;
• and
• a chain having two ends, one end mounted on the fastener and the other end mounted on the fore end of the pedal plate;
• and
• two beaters mounted transversely on the shaft;
• wherein an adjusting bolt presses against the lower clamping jaw, is mounted through the mounting hole of the lower clamping jaw and the fastening hole of the upper clamping jaw and is screwed detachably in the threaded hole of the pad.