extra layers of glass underfoot?pre-mature release bindings?

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MontuckyMadman
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Post by MontuckyMadman »

FG supply has 45/45 with chopped strand in a 25oz.
seems like more than enough.
I bet if you email on3p, scott will tell you what he is using.
Who wants to split that iso doc?
I found it for 98 USD.
sammer wrote: I'm still a tang on top guy.
troublemaker
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Post by troublemaker »

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Dr. Delam
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Post by Dr. Delam »

If you are worried about pre-release then you should be looking at the binding more than the ski. Certain bindings are significantly better at retention, i.e. Salomons with Driver toes.

When the ski flexes the base elongates and the topsheet is compressed. The heel piece will slide backwards on the track to allow for the shortened distance between toe and heel. However, if the toe wings are short and the forward pressure spring is weak then there is a greater chance of pre-releasing at the toe in hyper flexion situations. Most of these bindings are designed for upward toe release.

Many AT bindings can go into tele mode when the ski is overflexed. Improvements have been made in this area over the last few years but I still have not seen a perfect design.

I think the issue with overflexing has more to do with the forces on the ski than the binding. When the top sheet is compressed to a high degree it can actually buckle and break where it meets the binding toe piece. I think the best solution is to add a full rubber layer that will allow for the top sheet to shear more relative to the glass.

Adding any boot and binding to a ski will increase stiffness underfoot. Most boots don't flex that much.

You shouldn't need to add any glass in the binding zone as long as you are screwing into a decent hardwood which you are. The pullout tests that I saw at the Praxis shop had the maple wood rip in half and the screws stayed put! 95% of pullouts that I see are due to improper mounting or rotted wood due to moisture. Your binding mount integrity will come mostly from the core, not the composites.
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Dr. Delam
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Post by Dr. Delam »

https://www.e-standard.org/index.php?ma ... _id=110810

ISO 8364-2007 PDF FORMAT(ELECTRONIC COPY) for only $8.

I also found http://www.pdfstd.com/index.php?main_pa ... _id=127525 for the same price.
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vinman
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Post by vinman »

DD this has always been my though. By adding glass you just get less wood to screw into. I'm sure the Fg and resin do add done sort of reinforcement to the wood for pull out but I always wonder how much an extra layer really does. Guess that ISO doc might have some info....
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ben_mtl
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Post by ben_mtl »

I post the ISO référence but I don't have it, I've learned about it while looking at some new AT bindings... the Plum brand says it matches ISO8364 specs but I don't know this document contains anything useful about the "ski" part...
8$ for the e-version is pretty cheap... might make that "big" investment soon !
A bad day skiing is always better than a good one at work...
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