illusionist wrote:does anyone have an idea as to where i can get curved wing ribs to create the aerofoil?
Cut them yourself. Its easy once you see how.
Make a pattern (a simple arc works fine for these planes, simplex curve is nice too) from heavy poster board, mat board, illustration board, the back cardboard off a notepad. Start with a simple rectangle, say 3-4 inches wide by the longest rib you want (say 15 cm) Now, along the 15 cm edge draw a nice smooth curve (you can print out a curve from you 'puter and paste it on the cardboard). Cut along that curve as smooth as you can. Harden by soaking it with thin CA. Sand smooth.
Now, take a rectangle of balsa as long as your rib. Grain should run along the length of the rib. Cut along your pattern so that rib length edge is now curved. Slide the pattern down 1/16 to 3/64 of an inch (or per plan). Repeat cut. You now have a nice curved rib piece. Slide down again, repeat cut. Another rib. And so on.