Here is another one for fun...Water powered engine very low friction.
This was built a couple years ago as an experiment mainly so see what would happen. A little squirt of water and the thing takes off like a jet!
Filsinger Turbine
http://www.youtube.com/watch?v=Erf7Fn--324
Check out the water turbine. Cant wait to get a bigger pressure washer on it and a super generator. Not sure of what this can be developed into but man dose this thing ever spin fast.
