ORIGINAL: Osirisf16
I asked about if the OS FL-70 is great choice for a 46 UCD and they told me to install an even bigger engine, while the manual only reccomends for the 46 4-stroke engines in the range of 51-70 (something like that). That's why i chosen a 70, because is the biggest i can install. With a bigger engine, i think it will be hurt to do aerobatics. What about that?
There is a 3d flying forum of RCU where you might get a good answer.
http://www.rcuniverse.com/forum/forumid_82/tt.htm
The u-can-do, and its set up, is definitely above the level of the beginner forum.