Just wondering if someone ever tryed glassing 4+4oz deck and 4+4oz bottom to get a strong glass job. The reason I´m asking is that I want to glass a board for power waves and I dont have 6oz cloth to glass the traditional 6+4 deck 4 bottom. Closest place to buy stuff is far away from home and if anyone know if it works I will do it. How it will affect the ride?
If nobody knows about it , I will do the normal 4+4 deck and 4 bottom that I´m used to and still strong....
I've done a 6+6 deck and6+6 bottom, and it was fine. havn't done it with four oz though. If your gonna add the weight, why not do it by placing a deck patch where your feet are, and leaving the bottom 4 oz only?
Sounds good but will it be stronger than the 4+4 bottom? Because I dont care about deck dents...just want to avoid the board snap in haf as usual to my shortys in power waves, I´m light surfer and ride 2 1/8'' thick boards...really easy to snap.
Wondering to know how the double layer on bottom afect the ride...
I read something in an article or online that was said by fletcher chouinard, about how having the same glass schedule on the deck as the bottom is how boards ought to be made. I guess he swears by this theory. He makes some super sick boards so i'd say go for it if you don't mind extra weight.
I'm still searching info about glassing 2 layers on bottom, to get a stronger board. Sounds like a good ideia to me just dont know how much it will compromise the flex.
Imagine the same board, 6'2'' 18 1/8'' x 2 1/8'' glassed in 2 diferent ways:
(1) 4+4oz deck , 4+4oz bottom = 16oz
(2) 6+4ozdeck , 6oz bottom = 16oz
The second option has more flex I guess? But the first is stronger?
I was just thinking ...if nobody puts 2 fiberglass layers on the bottom of PU shortys must have a good reason...maybe loose all the good flex and have a dead board?
Fiberglass has a a very good tensile strength and very very very poor stress strength .
board snap mechanism - what happens is that when the board is heavilly flexed/distorted , the bottom glass experiences
tensile forces which it can handle but the deck glass collapses and breaks.
therefore the weak side of a surfboard is the deck and almost every board snap began as a deck failure , reinforcing the deck is more importent that doing it to the bottom.
I guess that adding one more layer to the bottom of the board will more likely stiffen the board rather than actually
Most of snap boards i see here (hossegor, shorebreak waves) snap from the bottom when lip fall on the return board. Now i put more glass on bottom, no more snap.
On poly light shortboards, guys don’t use more glass because it cost more and it’s heavy.
Here on the North shore it is not uncommon for boards to have 2 - 4oz layers on the bottom. Primarily for the purpose of reducing breakage. You will be fine if you do your board that way. Due to the thinness of your board, you should still get enough flex. The longer your board, the more value the extra layer on the bottom will be.
You should lam the two layers together at the same time and really pull them as tight and dry as possible to keep down the weight. Since 4 oz has a tight thin weave, you should be able to pull it pretty dry without getting too much pin air. Though it is a delicate balance!