Hi Phil,
I built my wing walks with multiple ribs made from left over 3/32 plywood. The
ribs are spaced 5/8" apart with foam between them. The ribs were about 1 inch
tall from what I remember. Where the ribs meet the spars, I glued 5/8 x 5/8
spruce blocks positioned vertically and sandwiched between the ribs. I used
enough ribs to make about an 10 inch wide wing walk.
I quit building over 10 years ago, but I've been climbing into the cockpit for
15 year using the wing walk to make occaisional airplane noises and it is solid
as a rock. Don't tell anyone, but I weigh 240 lbs. I believe this method is
very good especially due to it's light weight.
Not to say this is the best method, but I am confident that it works well and
is reasonably light. Just to give you another option to consider!
Best Regards,
KerwynMattoon, IL
