Hi you guys

Anyone wanting to research propellers there is a propeller list along with all the other stuff on the web.

Chris I could be persuade to let you try my prop, you'd need to run without a spinner but if you could persuade GM to test it let me know?

Jon what was the ground run acceleration like with the your "Finlips" ?

10mph for 800 less rpm,s is not to sniffed at.

There was another guy that independently came up with something close to Paul Lipps plan form.

Cheers
Clive .................Gobxoy