I have read a bit about Tesla turbines and their amazingly high RPM output. I have also read that they don't product much torque, which is possibly why they haven't been used in anything more than dentist's drills and other things requiring speed but not high torque. How much power could one such as the turbine shown http://www.instructables.com/id/E5R0LEN6OFEP287CZL/?ALLSTEPS output? Is it enough to drive a wheel or propeller for propulsion? Thanks!