Subarubrat: Yep, that's the same Decathlon I built. IF you are careful, and build it really light, like 14 pounds, you could likely fly it with your 25cc. When you cover it be sure to use a covering that is light. I used Super Coverite (fabric) and that added quite a bit of weight. If I build another one, I will use monocote or something as light. I used large 1/4 scale futaba servos which are also heavy (but powerful). You could use some of the newer smaller servos that may be lighter and just as powerful. Just keep it light...

Bob