I am concerned that the Evo 10cc gas engine may not be powerful enough for a .60 size or 10cc size RC plane. The planes tend to weigh 8 pounds or more and were intended for glow 10cc 2 stroke  to 20cc 4 stroke engines. But to those of you who are using them in these bigger planes, you have me quite interested in how it works out for those planes. The 10cc gas engine is basically a replacement for a glow .40 through .50 size RC plane. The Evo 10cc uses the small NX crankcase size and in glow engines. The Evo .60 NX is a high performance upgrade for .40 through .52 size glow engine powered planes.  But I am watching you guys use the engine in these .60 size planes to see how it goes. It is very fascinating.

Now then the old .60 size planes were smaller many years ago as the old .60 engines used baffled pistons and didn't develop much more power than the .45 through .46 modern glow engines of today. So the old .60 plane designs would work OK though.

But then the Evo 10cc gas engine does work pretty well with larger props though, so maybe my concerns are wrong. Thus I will be watching you folks leading the way here.