U Can Do engine?
In my UCD3D, I have a .91 FX. I used that engine for two reasons.
1) I didn't want to pay the extra money for a Saito 100 right now.(that engine would be my first choice)
2) I just don't believe all that hooey about the O.S. being a bad engine and I'm going to prove them all wrong!(wink wink)
I even mounted it inverted (after much reflection) and other than the typical initial starting problems associated with inverted two strokes, it runs STRONG!
Weather has been poor, so I haven't been able to really fly it. But It looks like a winner so far.