Cap Strip Ribs for I-Beam Strength

Cap strips are applied to the edges of ribs to both strengthen the ribs and provide additional area to attach a wing covering. They marginally lessen the dip in the covering between ribs, slightly improving the uniformity of the wing’s airfoil. Cap strips create a kind of I-beam rib structure, strengthening the ribs so that they can better withstand rough landings. Of course, always cut cap strips with the grain of the balsa running along...