Wing Walk Area

After reviewing the Mark Langford way to construct the stub wings (glass on both sides for strenth, though he used CF) and Mark Jones' design for the wing walk area, I decided to take what I felt was the best from each.

This photo and the one next to it show my version of what Mark Jones did.  Here I chose 1/2" by 1/2" spruce and installed them at 2" spacing between ribs set 11" apart.  Triangular gussets were added under to add strength.

Note that the 1/2" by 1/2" spruce is set down about 1/2".  This is a main deviation which I did from what Mark Jones did.

My plan is to glass the underside of the foam as did Mark Langford.  This will then be place on top of the plywood.  Additional pictures will be added once I get to this point.

3/32" ply was then added.

So....here's what I decided to do.  I bought a yard of carbon fiber and cut various size pieces on the bias from this yard.  This is the largest and measures 24 x 36.  This is sitting on plastic.  I wetted this piece out, added a 16 x 32 inch piece, wetted this out and finally added a 12 x 25 inch piece.  I then lifted the plastic over to the stub wing placing the triple thickness on top of the double thick KR glass thus giving 5 thicknesses at the walk area.

Here I have the foam installed.  I used 5/8" thick styrafoam over wingwalk area for added density.  Two layers of KR glass are over the blue foam but after curing, I pushed on this area with my hand and could hear the foam "give" a little and knew that this would not do.

And here she is covered with peel ply ready to cure until tomorrow morning.

So, here is the end product after micro has been added and all has been sanded.  I have put my full wieght on this area with no problem.  But my thought is that Mark Jones has the best wing walk plan.  I added the foam over Mark's design for sanding, but it also adds squish.  Do it the Mark Jones way is my 2 cents worth.