ORIGINAL: BMatthews
ORIGINAL: DICKEYBIRD
....Granted, they were all conservative designs with light wing loadings so maybe any old airfoil would fly great......
From what I've read about how critical these are this sentance pretty much sums it up I suspect.
Someone in another post was describing the shape of the 8035 and the "old" S7037 and how on a 10 inch chord the differences between the two are less than 30 thou or so and how important that 30 thou was if you expect to see the advantages in the new airfoil.
Are we talking about the same airfoils? The ones I'm referring to are the S8036 & S8037, originally designed by the good Dr. S. & tested for the Top Flite P-47 R/C semi-scale model and subsequently used by lotsa folks on a plethora of other R/C power models with reportedly great performance.
The S7037 is kinda different, being a sailplane airfoil, yes? S8035 is 14% symmetrical aerobatic airfoil. [sm=confused.gif]