You'd have to make your own fan. The diameter of a DF is significantly smaller than a prop for the same engine and because the 3" prop puts out so little thrust as it is, it may be impractical. I considered trying it with a CPU fan, but it may not hold together at the RPMs that an .010 turns. I also thought about cutting down a 3 1/8 X 2 1/2 3 blade. http://www.coxmodels.com/prodinfo.asp?number=C05410 You could try one of the GWS fans, but again, it would probably blow apart. http://www2.towerhobbies.com/cgi-bin...?&I=LXHHP4&P=7