Moderator: scubarider2
kenryan wrote:Incidentally, the Helio has metal wing and fabric ailerons (but metal flaps).
jak wrote:heliojoe if you want to all metal the wing, please call troy he has some info you will want to know. Jak
kenryan wrote:85.75 square feet
X .228 (.016) = 19.5 lbs
X .285 (.020) = 24.4 lbs
It looks like the ribs are already set up for additional stringers, one top, one bottom. I can't imagine any problem with wavy-ness if stringers are added top and bottom. Using 1/2 X .035 round stringers would add another 2.6 pounds total. Using Oratex for figuring (because the weight is known) subtract about 6 pounds for fabric but then add back paint.
Bottom line: .016 with additional stringers, painted, probably about 20 pounds heavier than same two wings covered with Oratex.