Absolutely. No question about it. I have two OS 75 AX's and three OS 1.20 AX's and they all run the same way. They start, usually on the first flip with the chicken stick, require minimal tuning, and just plain fly fly fly. Great engines. And I have them on a variety of planes: Protege, Skylark 70, Excelleron 90, Venus II, & a Tiger 120. They seem to do it all, and do it well.

CGr