Originally Posted by Kiesling
If you are really trying to build the lightest model possible you will probably have to shop around for the lightest batch of foam you can find. Kind of like looking for contest grade balsa . . .
OK, now I understand. I think because down here we get Dow styrofoam through one supplier, and I do all my work with them over the phone (600km away) all they have is a spec to go by.. so caveat emptor.
Tip airfoil is as below from http://www.charlesriverrc.org/articles/supra/supra.htm
HT12 88.9 mm
so you dail the HT12.dat file into profili and plot to those dimensions. This file is at http://www.charlesriverrc.org/articl...t-airfoils.htm
It is not shown on the VT plan.. enjoy the build.