The design for the original crank brothers pedal began out of frustration the founders of crank brothers carl and frank were tired of getting stuck in mud covered pedals with no way in or out they realised that existing pedals were too complicated it started with a simple question what is the best way to attach a shoe to a crank to answer this question carl and frank created a system with only two moving parts hinging on a spring this system became known as the eggbeater pedal and later