A vehicle propulsion system for maximizing power output, comprising: a frame; a first crankset and second crankset securably attached to the frame; a first sprocket wheel and second sprocket wheel attached to the first crankset and second crankset; a first pedal arm and second pedal arm attached to the first crankset and second crankset each having a pedal; a first chain and second chain disposed on the first sprocket wheel and second sprocket wheel, and the chain connecting to a wire on one end and a spring and wire on the other end; and a series of springs and wires attached to the distal ends of the first chain and second chain and disposed on a series of pulleys and sprockets.