Hello Fused.
Bulit more than one, but not the liquid/gas Co2, only gas Co2 as yet.
The other Turbo Charged hot air engine, built more than once.
Happy you to have, happy to assist, its Open Technology, free copy to all.
First posting, requirements, water pipe, one way valves, tennis ball and water turbine. Any gas may be employed to give greater pressure to heat than air.
Second posting, requirements, water pipe, one way valves, tennis ball, water turbine and turbo charger. Any gas may be employed to give greater pressure to heat than air.