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Posted: Wed Jun 02, 2010 4:06 pm
by OnDeck
Shame on you. I thought you called yourself a geek?
Well, non-quantitatively, how is the dampening in your opinion? i gotta think it's very little, but am very curious because i want to try something similar myself.
Glad you broke some ground here!
Posted: Thu Jun 03, 2010 4:52 am
by Jekul
I would have to say the dampening characteristics are not very good. It seems to take about 1.5x as long as a capped board to recover from a vibration test. My layup is as follows:
4001 Durasurf (1.2mm)
Triax CF
Core
Triax CF
Durasurf Topsheet (0.75mm)
Posted: Thu Jun 03, 2010 5:37 am
by Alex13
How do you do your vibration tests, out of curiosity?
Posted: Thu Jun 03, 2010 9:54 am
by Jekul
As noted earlier, I don't have a technical method developed, nor do I plan to develop one anytime soon. For this 'test' (which any engineer would laugh at) I clamped down one end of the board and deflected the opposite end approximately 4". Then I timed how long it took the board to stop vibrating (to the human eye). It's not very technical, but OnDeck just wanted a very rough estimate on damping properties. I know I've read much better methods from the founders and other ski builders who've been doing this longer, but this only took me 1 minute.
Posted: Thu Jun 03, 2010 7:48 pm
by OnDeck
Jekul wrote:As noted earlier, I don't have a technical method developed, nor do I plan to develop one anytime soon. For this 'test' (which any engineer would laugh at) I clamped down one end of the board and deflected the opposite end approximately 4". Then I timed how long it took the board to stop vibrating (to the human eye). It's not very technical, but OnDeck just wanted a very rough estimate on damping properties. I know I've read much better methods from the founders and other ski builders who've been doing this longer, but this only took me 1 minute.
I'm not sure it gets a whole lot more compelxt than that.
That was exactly what I was looking for. What do you think, some some extra VDS? Would shaving the core down in the middle make it a little less stiff and more damp? Thanks for guinea-pigging this.
Posted: Fri Jun 04, 2010 9:18 am
by MontuckyMadman
An all carbon layup is not really going to give you an all mountain ride hence the reason DPS and other carbon only companies use a hybrid, glass and carbon layup for more shock absorption. Using a bucket of rubber will negate the weight saving you get with the use of carbon.
Metal might be a better option check out the SS tech from DPS