Pneumatic accumulator design

Thanks for a most interesting insight into strange inventions indeed.

However, yes I intend to charge one side of the piston mechanically , via a pedal of 12" long with mass of 200 lb through a freewheel gear. That will periodically get charged and thus keep ratcheting/moving the piston up the cylinder. Eventually a valve will exhaust the compressed air to a motor for driving, the mechanicals will then reset for another time.

air motors are very inefficient you will need to pressurize the tank to a very high level to 2000 psi or more to obtain enough volume of air to run the motor much more than a minute or two. I would not like to be riding around with a tank with that much pressure on it. Do to the inefficiency of an air motor you will be doing a lot more work over the long hull than if you petaled up the hill.

Good and accurate answer! I have rated it as such too.