General > The Shape Shack
Which construction?
burchas:
I'm working on a downwind hybrid board 15x27x4.5 @225L
Found a cool way to add stiffness without weight penalty using triangle carbon stringers added into the foam
(hot wire foam cutout added back after the layup) and runs 3/4 length of the board.
Now want to keep the construction fairly light, stiff and cheap but still reasonably impact resistant.
I'm afraid that glass alone will not do the trick. Read some positive stuff about Innegra reinforcements sandwiched
in between the glass layers placed in strategic sections. Also read some negatives about vector net. Trying to avoid
any carbon and bagging for the same reasons.
Target weight is under 25LB (1.5# blank).
Any ideas?
TallDude:
Starting out with 1.5# is going to make it tougher to stay under 25 lbs. With the big boards you kind of have to stay with 1#.
burchas:
--- Quote from: TallDude on November 22, 2018, 10:26:11 AM ---Starting out with 1.5# is going to make it tougher to stay under 25 lbs. With the big boards you kind of have to stay with 1#.
--- End quote ---
Noted. Any words of wisdom about that layup and cost effective alternatives?
TallDude:
With a hand layup, E and S glass will make a flexy 16' or 18' board. At a minimum you need CF down the rails. I talked with a lot of glassers before glassing mine. The responses where all similar. One layer CF, overlap the rails. Then a sander layer of Veil cloth (2 or 4 oz glass). If you have the money, very light 1K plain or twill weave 3.5 oz.(twill is more). A few pounds more use 3K CF 5.7 oz. plain weave. The 3K is a course fabric, almost like burlap. Those little pockets in the weave of the 3K hold epoxy weight. The only way to reduce that is use 1K CF or V-bag the 3K CF.
https://www.fibreglast.com/product/1K_Plain_Weave_Ultralight_Carbon_Fiber_Fabric_2363/carbon_fiber_all
PonoBill:
That 1K ultra light is just insanely expensive.
Navigation
[0] Message Index
[#] Next page
Go to full version