RE: Building the BUSA SPAD 13
Hi Rich,
Don't worry about the 1/16" thick ribs. I thought the same thing until I realised there are twice as many as there usually are on a WW1 plane.
One thing that bothered me about the wings was that the rear spar shows through the fabric. Next time I would sand slight scallops between the ribs so the fabric doesn't touch. Since you added webs, that would maintain the strength of the spar.
As you probably know, I had a mid-air with mine last summer and I have to build a new set of wings.[&o]
Jim