pedaalid

Pedaalid, the Estonian term for pedals, are devices mounted on the crank arms of bicycles and other pedal-operated machinery that enable a user to apply force with the foot and rotate the crank. They transfer energy from the rider into the drivetrain, propelling the bike forward. Most bicycle pedals attach via a threaded spindle, a design that allows easy removal and replacement. On most bikes the right pedal uses a standard right-hand thread, while the left pedal uses a reverse (left-hand) thread to resist loosening.

Common pedal types include platform pedals, which provide a flat surface for the shoe; clipless pedals, which attach to compatible cleats on cycling shoes; and toe-clip or strap pedals that retain the foot with a cage and strap. Platform pedals are versatile and suit casual riding; clipless systems offer secure connection and efficient transfer of power, while toe-clips provide optional restraint for older setups.

Pedal bodies are usually made from aluminum alloys, steel, magnesium, or durable plastics, with axles typically of steel. Bearings may be sealed cartridge types or conventional loose-ball assemblies. Pedals may incorporate reflectors, mudguards, or extra grip surfaces. They must fit the crank’s thread standard, most commonly 9/16 inch with 20 threads per inch, though some smaller frames use 1/2 inch threads.

Maintenance includes regular inspection for wear, cleaning to prevent grit ingress, and re-greasing or replacing bearings as needed. Periodic torque checks ensure pedals are securely fastened. Worn or damaged pedals should be replaced to avoid injury, and cleats used with clipless pedals require proper adjustment to align the shoe with the pedal for safe entry and release.