The Organic Rankin engine, which uses a lower state change temperature. People have built these from used auto parts and power them by very cheap solar trough. Why more people don't build this in their backyard I have no idea. Look up a project at MIT to see more
Try to find a supercharger at a car dump this is a nice turbine wheel on a axis with nice bearings!
This type of thought has enabled many independent replicators to find further applicaitons and imporive their R and D. The RV is the RV, its what you can do with it by your own applicaiton that counts.
And this is thinking in the right directrion, apply it and imporive it will give you the options to do it, main thing also is to support it and sign the petitions on this page please (to support the RV's energy savings)
Guys please report your success and description so we can help and improve. After the New year im testing Norm set up, we have more efficient double coiled RV motos then Norm to try, if you dont have Double coiled mortors, we still can HALF the input down by using a circuit in the compilations on the NPO page
steam car Edit
Clean Energy Systems Edit
Steam boat association Edit
Variable Geometry Toroidal Engine (VGT): http://www.roundengine.com/
Star Rotor Expander: http://www.starrotor.com/Expander.htm
Centripetal Dynamics: http://www.centripetal-dynamics.com/projects_ert.htm