sport10,
That's exactly what I am trying to understand. Are the gas engines I listed suitable for a 1/4 scale plane like the Edge.

True...that people are getting the "Unlimited Vertical" with the gas engines, but they are adding at least 2 lbs to the overall weight.

Question is ... Is it really worth it ?

Another question ... Would you rather have a light plane or have supercharged monster which is heavier ?

BTW: I too have been bitten by the gas bug and have a MVVS 26 IFS gas engine for my H9 CAP 232. I haven't put this combo together yet.