construction

[Whale]

Does anybody have an idea of the laminates and orientations that are used to build these light-weight freestyle/freeriding hulls and decks?

 

[Takeastand SJ]

Most use some type of carbon or carbon kevlar, the strong ones use both.

 

[Matt_E]

The good hulls use more advanced - and more expensive - techniques than what you can whip up in your garage, unfortunately.

 

[WaveDemon]

there is a hull builder who posts on this site. maybe he'll help you out...

 

[ArtMaybee]

hmm... do any of the hull builders use systems too advanced or expensive to replicate in your garage?

I haven't seen anyone using prepreg or autoclaves.

I think the biggest thing is knowledge and practice.

 

[Matt_E]

Lightweight uses at least vacuum bagging, I believe.

Sergio uses vacuum bagging, and autoclave, per his claims.

 

[unclehulka13]

sergio vac bags his hulls. How he can build them so cheaply, and vac bag em, is still a mystery. Unless carbon is THAT cheap in brazil.

 

[Whale]

there is a hull builder who posts on this site. maybe he'll help you out...

can this hull builder help me out??
im looking more for the spec's of the laminates for example, weights orientations, resin ratios and hull and deck thicknes. I know this is info that most builders will not let out. But hopeing there maby one.:biggrin:

 

[SuperJETT]

With all due respect, it sounds like you want to use someone else's research/testing without doing it yourself. The people that build hulls put a ton of time (at least most) into figuring out that information so they can build a strong and lightweight hull.

 

[ArtMaybee]

Vacuum bagging can be done affordably...

I agree with superjett. I highly doubt that the information you're looking for will be shared. A lot of time goes into developing a layup schedule.

as far as resin ratios the closer you can get to 50/50 the better

If you want a REALLY durable hull, you might want to look into using S glass and maybe some carbon/kevlar hybrid cloth in key places. Then use vinylester resin.

Even though a hull builder won't give up his hard earned secrets, there is a LOT of information on the subject available.

 

[Whale]

Cheers for the idea's guys, yes i agree that these are trade secrets and respect that. Just thort someone might have built one in the garage at home and might have some idea's. when i get my project underway ill post. what is S glass??

 

[ArtMaybee]

High-strength glass, carbon or other advanced fibers are used in applications requiring greater strength and lower weight. High-strength glass is generally known as S-type glass in the United States, R-glass in Europe and T-glass in Japan. S-glass was originally developed for military applications in the 1960s, and a lower cost version, S-2 glass, was later developed for commercial applications.

High-strength glass has appreciably higher amounts of silica oxide, aluminum oxide and magnesium oxide than E-glass. S-2 glass is approximately 40-70% stronger than E-glass.



a couple links with info:
http://www.azom.com/details.asp?ArticleID=769
http://www.sweetcomposites.com/Fabric.html