Search found 39 matches

by pentagram
Fri Nov 09, 2007 11:47 am
Forum: Materials and Supplies
Topic: carbon and kevlar weights vs glass stiffness
Replies: 8
Views: 7280

had put my building plans on hold for a while but now is the time, can anyone please give me some advice on how the materials i have for reinforcement might work out. I have 200gm m2 biaxial carbon (0,90) and 200gm m2 plain weave carbon (45,45) 70gm m2 kevlar biaxial (0,90) the plan was to use one o...
by pentagram
Tue May 29, 2007 6:01 pm
Forum: Materials and Supplies
Topic: carbon and kevlar weights vs glass stiffness
Replies: 8
Views: 7280

i have already bought some carbon and kevlar for my board. i have 200 gram/m biaxial and also 200 gram/m plain weave ( this covers 0,90 and 45,45) my plan was to have one layer of each of these carbons to get quad axial carbon action..and using 70 gram/m kevlar to protect the carbon. can anyone give...
by pentagram
Wed May 09, 2007 4:09 am
Forum: Aprés Ski Building
Topic: travelling with skis
Replies: 6
Views: 5245

to add my recent experience with air new zealand (being a kiwi)and most other airlines. you are normally aloud one piece of luggage up to 20kg with the allowance of one further piece of luggage of up to 10kg for sports equipment...the thing is skis are ok but they say a big f..k you to some other sp...
by pentagram
Wed May 09, 2007 3:58 am
Forum: Materials and Supplies
Topic: carbon and kevlar weights vs glass stiffness
Replies: 8
Views: 7280

carbon and kevlar weights vs glass stiffness

hi everyone, yeah i know there has been heaps of threads about carbon but I have been looking hard through this site and grafsnowboards and come up with a'lot of conflicting calculations on what weights of carbon and kevlar are equal to glass. the best i have found is, 70 gm2 of carbon = 100 gm2 gla...
by pentagram
Wed May 09, 2007 3:34 am
Forum: Ski/Snowboard Design and Layup
Topic: nomex honeycomb
Replies: 16
Views: 16177

has anyone made a full or near full nomex or other material of honeycomb core?
i would like to know if the flex is softer/stiffer when using the same amount of reinforcment?
also what weight of honeycomb have you used? thanks.
by pentagram
Sat Apr 14, 2007 3:29 pm
Forum: Ski/Snowboard Design and Layup
Topic: University Project
Replies: 4
Views: 3944

ok...one of the big differences to aerospace enginering is the use of autoclaves to achiece maximum strengh with minimum weight due to pressing out of excess resin. how can a home builder make a cheap easy auto clave...i have not done it but sure someone has...i scuba dive o.k...so i have tanks fill...
by pentagram
Thu Mar 29, 2007 6:37 pm
Forum: Ski/Snowboard Design and Layup
Topic: ghetto build
Replies: 3
Views: 3239

I think that if we can use such simple methods than thats great.i have been thinking of doing it simple with my board and the technique you described is one of them, I have also heard you can use the same technique for your template to get the chamber.good luck for yoyr skis and let us know any othe...
by pentagram
Wed Mar 28, 2007 9:43 pm
Forum: Ski/Snowboard Design and Layup
Topic: Perfered Core Material for hardpack
Replies: 5
Views: 3976

if you want a core that does not vibrate and holds a good ege i know mahogany is very good, I have heard of top snowboard races using in the range of 50 percent to keep the ride smooth.It's heavy but I guess if your not going off the ground much...good luck
by pentagram
Sat Jan 27, 2007 9:48 pm
Forum: Materials and Supplies
Topic: Eco-friendly Ski Contruction
Replies: 29
Views: 22990

an idea for reinforcements..silk cloth is the strongest natural fiber along with hemp but as silk is extremely light weight to high strength than layered up could be a good option...i know that the silk moth is killed in the process but silk moths are renewable!.expensive perhaps but for hundresds o...