mmattlockx:

Great advice as to the the cost effective airframe. If you want to scoot, gotta have reasonable power and rpm ability up front. A OS, other than the Ducted Fan units are just not designed for the rpms needed. Yess, a Jett 60LX would be ideal, but your talking big bucks, worth every penny. Alternative is a Webera 55speed, 10 X 10 apc prop after carefull breakin. The thing is not far behind a Jett 60 in performance. Must also buy a Jett or Nelson pipe. A K & B screamer 48 is a ok cost effective engine, but way behind the Webra, way above OS. A good delta design will scoot and slow down when needed. Usually are a pain in the tail unless you install retracts. The Viper type is a better overall user friendly bird, but space for fuel is a problem. I usually scratch build a fuse using the same basic moments, just a 1" or so in the front and rear added along with width for fuel and reasonable install room, and cowell in the engine area. . My jett 60LX powered home brew will run with the best of the local Q-500s with 12oz of fuel, landing gear user friendly and land like a hot sport airframe. If we had a decent grass field, the Jett would probably be in a Delta, a Mike Conners delta design for overall user friendly. My "Speed Racer" delta with OS 46 is fun, but yawn, go sleep performance with fixed landing gear. There is just no substitute for a good engine, a gotta have if you want to be impressed. ENJOY