Thanks guys. I am replacing the Saito I had in mine and am looking for engine options. I don't like the fuel costs of the OS the Moki 1.8 is not too bad. I am looking at either the Evolution 1.6 or the Moki (Mark) 1.8 Gas. My Cap-X is a bit of a pig with no engine in it right now it is 11.7 pounds. This is with the supplied landing gear, carbon fiber push rods, Hitec digital servos in the recomended places, and an empty 20oz tank. I figured with the Moki gassser it would have enough power and fairly low fuel cost. Total weight with a Bisson Pitts Muffler is about 13.3 pounds, with a wing loading of 29 oz/ft^2. Kinda high but I have heard some guys with DA 50's come close to 14 in some cases.