Thanks for bumping this one Dower.
A good example of a thread that makes a heck of a lot more sense to me now than it did a year & a half ago.
thats what I was thinking. Berts comments re: franchising puts a lot of other things into perspective, too.
Kind of coming into the conversation late but.
I sell a lot of S2 glass, most of the applications I see it is used in is for the added tensile. Tensile is a huge factor with ballistics, whole other world. It also gets used in combination with e-glass in certain spring applications as a bandaid to increase tensile on unbalanced laminates (balanced laminate meaning in a laminate that flexes the same way every time, the tensile side of the laminate should equal the compression side of the laminate.) In surfboards I don’t see a huge amount of need for the added tensile. You would be better off using a quality resin as resin has a lot to do with compression. Also a flat weave glass will only lower your compression. Ive seen people using flat weave s2 glass thinking they are gettng a benefit, my guess is they are wrong.
Yes yes yes…all boards can break and can ding.
I can say this, (putting all technical factors aside and speaking from personal experience) I have had several boards made with E and then I have several boards made with different combination of S.
S dings a lot less, is stronger, lighter and I think flex’s a bit differently.
(That I have seen)
thanks for the info Sluggo and bass.
hey basswave, i was wondering if the S glass boards were made with epoxy or poly ?
thanks
dower
Quote:
In glass composites, compression is usually only half of the tensile strength. This leads to difficult imbalance in the strength between the side of the board that is in compression and the side that is in tension. If compression and tension in fiberglass composites were equal, we would see far fewer boards breaking.
Wouldn’t this suggest that we should be using glass on the inside of the sandwich that is half the weight on the deck, but twice the weight on the bottom
----- 4oz
----- balsa
----- 2 oz
----- eps foam
----- 4 oz
----- balsa
----- 2 oz
Is the balsa good enough in compression that it would cancel the glass weights out?
The first surfboards i made were in Florida near Cape Canaveral, i’d buy resin and cloth from a place right near the cape… the old guy that ran the place was one of the engineers that developed the stuff for the space program in the 40’s, he said that the only place that gives any kind of strength in a resin/glass application is where the resin touches the glass, everything else is wasted material and weight…the way i was sold s-glass in 1975 was that the process of making the fibers improved so that there could be two times the number of tiny glass fibers in the same volume of glass… so that there were more bonds in the same volume of material happening, thus you do have a higher strength and less wasted weight… maybe… God bless…danny
Aloha! I think I remember those boat guys in Cape Canaveral. I used to make boards down there in Cocoa Beach with P. Dooley, Scott Busbey, and G.L., back in about '70/'71. Sometimes we’d go buy materials from them. One of those crusty old-timers clued me in to how to make surf. agent. Aloha…RH
Bert,
You and I have clashed in the past, however, on the subject of your business and lifestyle, I think you’ve got it snookered. You’re living the life most of us strive for, doing something that gives you personal satisfaction and providing for your family both financially and emotionally. If I was you I wouldn’t change a thing. Except maybe take on a protege who you can teach and mentor and who can carry on for you when you decide to retire. There’s great satisfaction in that. Just make sure you select the proper student. Cheers, mate.
Hey Dower
All the boards where Poly and by different shapers/labels.