CafeenMan - First of all - let me apologize - I mis-interpreted your previous question about the spars - so let me start over and try this again. The first image is a picture of the rib I started with. The main spar was built using an upper 3/8 square hardwood stick, and a lower 3/8 hardwood stick, and then they were joined with a 3/32 web on the front and back side, in effect making a box beam structure.
See picture #2. Then, I used two more 3/8 hardwood sticks for alignment spars - I use these mainly to hold the ribs in place and align them properly - and they also add strength without too much weight. OK - now - if you look at picture #3 you will see a thick 1/4" spar and it looks like it is the fourth rib - well - I have to admit that I changed my design late in the game. I orginally was going to use large "barn door" style ailerons on this wing - so - this 1/4" thick piece was going to be my original trailing edge. Instead, I decided I wanted to add flaps, so I went with the design you see now. This is the first "large" wing I ever built, so I was concerned about it's structural integrety. Perhaps I overbuilt it. Every time I build a wing, I learn something, and I think the design process continually evolves. In other words, I don't think I really ever build a wing the same way twice - I like to see how how other people build their wings, and learn from folks like yourself - which is what makes this a fun hobby.

Hope this does a better job of answering your question. I put the wingtips on this weekend and got the bottom of the wing covered. It was absolutely beautiful weather yesterday, could have flown it if it was ready. Will post some more pictures as it gets closer to flying condition.

Regards
Ramrod25