by Bryan Cotton » Thu Oct 13, 2016 9:46 am
Kevin,
You are right that the skins hold the wing square. The root rib is not parallel to the other ribs (classic A model). If you drill the root rib to the angles when the wing is not square, you will have to flex the root rib to get it to line up later.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23