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After a slight vertical landing last fall in cumberland, I had to assess the usual stress around the back canopies of the plane.
Stress is cause by scissors effect between the wing that are stiff so quite heavy and the weak part of the fuse that is between the wings. Too much opening with not enough meat lead to shear...
Should have done that stiffening before...
I liked the way Don did on his plane, basically rip the back windows, stiffen the area, a bit of putty, paint and windows are simulated by using black vinyl. Great idea that I duplicated on mine
At first couple layers of fiberglass and epoxy to fill the holes.
I used a sheet of mylar on the outside to layup with the correct shape
Untitled by steffruelle, on Flickr
Untitled by steffruelle, on Flickr
Then tearing up the bead of fiberglass tow that join the two haves together (really painful to not damage everything), using scrapping blades and coarse sand paper
After, lay up of carbon fiber cloth (heavy) as a ring on front and back of the fairings as on the split halves
Untitled by steffruelle, on Flickr
Untitled by steffruelle, on Flickr
And.... Putty and sanding...
Untitled by steffruelle, on Flickr
Untitled by steffruelle, on Flickr
Stress is cause by scissors effect between the wing that are stiff so quite heavy and the weak part of the fuse that is between the wings. Too much opening with not enough meat lead to shear...
Should have done that stiffening before...
I liked the way Don did on his plane, basically rip the back windows, stiffen the area, a bit of putty, paint and windows are simulated by using black vinyl. Great idea that I duplicated on mine
At first couple layers of fiberglass and epoxy to fill the holes.
I used a sheet of mylar on the outside to layup with the correct shape
Untitled by steffruelle, on FlickrUntitled by steffruelle, on FlickrThen tearing up the bead of fiberglass tow that join the two haves together (really painful to not damage everything), using scrapping blades and coarse sand paper
After, lay up of carbon fiber cloth (heavy) as a ring on front and back of the fairings as on the split halves
Untitled by steffruelle, on FlickrUntitled by steffruelle, on FlickrAnd.... Putty and sanding...
Untitled by steffruelle, on FlickrUntitled by steffruelle, on Flickr
AAA TT TN
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