Shinnworld2 wrote: ↑
Fri Mar 24, 2017 2:58 pm
A bottom mounted wing with box is trying to spread this junction open.
It is just easy to understand that the surface area of the top of the F wing where it joins the bottom of the fuse can be about 20 cm2 (conservative example if fuse 2 cm wide, wing 10 cm long) or MUCH more depending fuse width and wing cord as it looks on your design, maybe even 35 cm2?
Not taking advantage of this physical mechanical contact seems less than ideal?
At least for most D I Y projects, and quite possible factory made designs, it sure would look like wing under fuse is WAY stronger.
Just consider the forces on the threads of the inserts, bolts, wing beveled holes having to almost constantly support the rider and board.
How much overall surface area do the hopefully beveled mounting holes where they mate with the bolts provide in the top mount,I guess less that 1 cm2, as compaired to an overall bottom?
Just thinking about flat landing a jump with only about 1 cm2 of wing surface area being help in place by thin inox, SS threads and how they are fixed into the fuse...
For sure in the D I Y failures I have seen and fixed after the wing is mounted under fuse no worries!
Not trying to be argumentative, the one STRUT Cannondale fork has proved strong enough despite the look.
But if you hold true to your design idea than the rear wing should be mounted UNDER the fuse.
Time will tell....