Hi sides7

I am almost done my B-25 with twin Ryobi's. You say your plane weighs 42 lbs. Each ryobi weighs 4 lbs, that's 50 lbs. You can expect an average of 12 -13 lbs of thrust from each ryobi depending on how you prop it. To me it would look underpowered. The one advantage of a ryobi though is it is rear induction making it a streamline installation.

Peter[img][/img]