Originally posted by matrix
For the guys who have been out flying the .46 what is the best engine size? I was planning on a YS 63, but now I'm a bit worried also. Marc, I believe you were going to use a YS 63...any data to report??? 
The plane is on the bench now. I haven't finalized between the OS 70, Saito 80 or YS 63 but will this week. I'm waiting for a little more feedback myself before a decision is made since this one is for review in the RCU magazine. Since I did a detailed review of the big brother I can compare the two planes. I've had a lot of time on the big brother so I'll be able to see what the differences might be.