hi

I have two excelleron 90's and with a YS110 it was good, but them I put in an os120AX and it was very very good. Perfect engine for
that plane, you fly on 1/3 throttle and can do all you need.

HOWEVER, you need to watch out for two things, ONE - change out the landing gear to a bolly gear to get good cleanance for you prop and SECOND reinvorce the landing gear at the base, put the triangle stock in there to give it full support.

otherwise, the plane flys well