ORIGINAL: proulxlaw
I'm with ya Rare Bear but, which one? Will the 110 be overkill?
Of course I will do the usual ARF things to strengthen the airframe e.g. firewall-fiberglass cloth & epoxy, paint the inside of the fuse with epoxy cut in half with alcohol, put a carbon fiber rod throught the horiz stab and I have even thought about using wires to strengthen the stab area.
Are there any other weak areas that should concern me?
I had this same model last summer and flew it with an O.S. 91FX. It flew great on that engine and had plenty of power. I flew the model straight into a tree late last season.....most awesome crash I've ever had!! About the only thing I couldn't do was hold it in a hover. It would hover for a few seconds and then fall out. With that said, I think a Y.S. 110 would be overkill for this plane. The Y.S 110 is a powerhouse 4-stroke.
I saw a Funtana (70" w.s. I believe) that had a YS 110, and it flew unlimited....could also maintain a hover. This airplane is bigger than the Hobbico Sukhoi.
For your questions on strengthening the model: I built the model with no modifications to the instructions and did just about everything in the book including some very violent snap rolls. With that said, I would at least strengthen the entire firewall section with some fiberglass cloth/epoxy.