i did up a drawing of the wings on my boat for reference to the new slino. this drawing is available thru my google docs (i will gradually transfer all of my drawings to this site - still not sure where to put the rhino model and cad files, for now these can be emailed on request).
at the moment I am running aluminium wings as noted on the drawing. i also did some calcs for equivilent carbon wings (based on CST products):
76x1.27 Aluminium (EI 14.37kN/m2)
*ID63x1.8 Carbon
50x1.6 Aluminium (EI 4.92kN/m2)
*ID35x2.5 Carbon
ID40.4x2 Carbon
ID44.7x1.8 Carbon
ID47.2x1.5 Carbon
40x1.6 Aluminium (EI 2.46kN/m2)
ID32x1.5 Carbon
*ID30x12.6x1.5 Ellipse Carbon
As drawn in aluminium the wings would be approx 7.47kg
Using the alternative carbon sections marked with * above gets 4.72kg
A bugetary price for aluminium tubes is $266, for carbon $1873 (again using the * sections)
your wings looks like a bit big - make them small and the price will decrease!
ReplyDeletei agree. they can cross the boat 500mm from the transom, and if you can do a nice curved carbon bit at the front corner, or just a kink in the front wingbars at the chainplates, the outer bars need only be 1000 or 1100 long.
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