ORIGINAL: Bob Laine
My humble opinion it that anything less than 1400 square inches strokes the "EGO" than anything else. Simply because of the weight.
Hi Bob,
You lost me on that one... do you mean that you don't think you ought to use gas on anything under 1400 sq in's? FYI, your 87" Yak(which is really 85" ) is really only 1350 sq in, not 1450 as advertised. My Yak is the same and flies like a feather at 17.5lbs. Also, as I mentioned my 1150ish sq in Extra with Taurus at 15 pounds also flew great. My opinion is that 14-15lbs for a 11-1200 sq in plane with a 40-50cc gas engine is just fine. Of course lighter is better, but for most people, the above combinations work fine.