Originally posted by Steve Campbell2
That's a bit of a broad statement, don't you think? There are too many variables to flatly say that any one prop is THE thing for "any airplane under 6.5 pounds".
Actually a broad statement would be, "ANY plane under 6.5 Lbs." I clearly stated the "13x4W is the best
3D prop for the YS .63." 3D being the operative word. That leaves a whole lot of other planes and prop combinations that would work fine with the YS .63. Again, the proof is in seeing (the video) not just talking about it.