Instead, just use one rc helicopter turbine engine to spin a decent size prop. I've seen free-turbine shaft drive rc helicopter engines in the low 20HP range. A 22HP engine would surely power a Thundergull, especially since the engine swap would probably knock about 20 pounds off the empty weight of the airplane. Also, I have not looked in a year or two. There may very well be more powerful engines available now than when I last looked.I wonder if a Thundergull would fly on 4 RC model airplane turbines?
$$$$$$ Mucho dinero. Demasiado. $$$I have also wondered why the larger R/C helicopter turboshaft systems were not used on small E-AB aircraft to run a propeller.
Yup. Dave is a participant here at HBA.These guys are making turbines for light aircraft. The fuel consumption per hour is very close to piston engines. Too powerful for the Thundergull though.