we have designed an air propelled boat ....
components used:
1)Emax 2812 motor (120 watts approx)
2)Emax 18amps esc
3)aquaprop
4) Futaba S3003 servo
we are designing boat for sp4mm3r that is water propelled ..just for experimentation we made this air propelled boat ...in test running it was giving almost 650gms of thrust (not accurate as measured with whole assembly).
videos will follow
pankaj
Pankaj..see my postings on this craft...and see video...http://www.youtube.com/watch?v=EV4RnsjOzvA
http://www.rcindia.org/boats-kites-trains-and-all-others/its-l-4-my-rescue-craft/msg47576/#new try it...its simple...all with reworked toy motors...