Originally Posted by
Smertrios
Hows this for a reason to have light weight and cheap hydraulics... A hybrid pneumatic+hydraulic pedal car where there is a compressor unit (the pedals) consisting of an axial piston pump directly connected to an axial piston motor that is compressing air. This would allow the difficulty of pedaling to stay the same irregardless of how much psi there is stored in the air tank. And the driven wheel(s) would have an axial piston air motor that is driving an axial piston pump that is driving an axial piston motor so that it can deliver more consistent speed+torque as the pressure in the tank fluctuates.