Originally Posted by
Appowner
I think a 74 is too much. Not saying it can't be made to work but..... Tom, you saw one fly scale on a 38. Sig recommends up to a 50. 74 just seems excessive to me. Unless you want unlimited vertical.
Pick up an OS Pegasus 320 (53cc). Bet that would look sweet in that air frame. And you wouldn't have to build a dummy engine!
EF asked about the Zenoah twin. I agree that it is more than required, power wise, but I feel that it's a suitable choice.
The G-38 powered models flew like full scale Cubs. A dive was necessary to perform a loop.
My 1/3 Spacewalker has yet to be maidened, so I can't comment on it's performance. . It is powered by a Sachs 4.2. It balanced perfectly with that engine. The 774 may be good choice, based on it's weight.