Hey.
A friend and I are building a Guillow bipe, and we're going RC. Which should be the best engine for it? I´m thinking of a good Big mig .061, but there's also a good chance to get a .074 instead. Which would be the best one? (did I mention we're flying higher than 8000ft over sea level?. U understand we need as much power as we can get, and make the thing light).
I also need to know the prop I should use for each of them.
Suggestions anyone?