Biax and Triax fiberglass in one

[ProbsMagobs]

Im getting to the point now where i will be ordering my materials. I was curious if for a 156cm snowboard, would having all triax be too stiff? it is going to be a park/freeride board so i dont want it to be too stiff or soft. If i used triax on the bottom and biax on top, would that be good or would i run into problems. i feel like ive read about it before but i cant find the thread so i thought i'd start one for anybody intersted

[NinetyFour]

I'd stick with all triax if possible. The triax does a better job of adding torsional rigidity so that's why it's preferred. I'm not a snowboard guy but I'd think excluding a full layer of triax would make the board ride weird because it's so wide.

To control stiffness it's probably easier to use a lighter/heavier weight of glass combined with a thinner/thicker core to get a desired stiffness.

[Dtrain]

Triaxial and biaxial layer is common. Some brands put the triaxial on top. It's preference, a little science, and a little luck. My last 2 splitboards have had triaxial ontop quadax on bottom. Thinned out the core and put UNi carbon In to keep it stiffer top to tail. The torsion is great. I would suggest making your first board simple, so you have a "baseline" to compare too. I personally would only put biax in a beginner board. Or a flimsy noodle intended to putt around the mountain or park for hit runs. Biax has no place in all mountain charger meant for speed and response, unless you have Some super crazy layup with multiple layers above and below the core. I've rode hunderds of boards. Those are my findings. Next guy might sing you a completely different story.

[twizzstyle]

For your first board, do triax top and bottom. Get the process down before you start experimenting - better chances of getting a usable board that you can ride.

[olie25]

id say dtrain and twizz summed it up good i use lots of biax but i do build some strait jib/park boards, probably good to start tri, tri probably a 19oz. if you do wanna go with biax i have some 22oz 0,90 vectorply.

[ProbsMagobs]

thanks guys! ordering my materials tomorrow. Im getting blue crown uhmw base material, aspen core, black sidewall/tip spacers, 4 meters of triax fiberglass, and a glossy white pbt topsheet. (along with epoxy, edges, etc...)

[RYM Experimentals]

I use 20oz triax on the bottom layer below the core and 17oz biax on top of the core with a 6oz eglass as my topsheet, that's what I've been going with on my last few all mountain boards and it has been working pretty well. Haven't tried using triax on top yet but after reading the posts, Im gonna give it a try.