Unavailable Yet: The bellows and your hands are the engine... the pistons are the drive shaft and the wheel is the wheel! When you say engine... it should be something that generates power itself by burning (Using) some sort of fuel!
Christopher stewart: wonder how much power a full scale would make? maybe make a generator out of it and sell it
Air Engine Research: I would like to share some of your videos on my channel, if it OK?
hemagoura nayak: how many strength can gain by the motor plz tell in k.g
Wasim Pervez: german are masters of mechainics...
ryan dezeng: heres some thing u should try to make di pietro engine
Eric Hawk: Here is an industrial steam engine construction based on a similar design: