Hey guys

I have most of the pics, but I hadn't the time to post them. I will do so soon...

Hey guys

I'm attending ISPO during the next few days where all the companies present next years stuff. Is there anything particular you want I have a look at and maybe post a picture?

Cheers, Reto

Let us know how the mogul performs!

Ok, finished them this weekend. Need to get the base sanded and mount a binding. I'm pretty happy how they turned out for the second pair. 1800g a ski, just 10g weight difference between the two. flex seems to be pretty good. maybe a little too stiff in torsion for such a powdergun. http://home.rega...

MontuckyMadman wrote:Even without vds u really thik the resin will go into those tooth gaps? Its like the perfect airtrap. Depends on the viscosity i guess. Seems hard to get it all in there even with my fingers.

that shouldn't be an issue, because at first there is a vacuum there and resin will be sucked into it.

I wanted to try resin infusion but there is no way to get resin between VDS and edge. Would be interested in your approach regarding this challenge... Cheers, Christoph I guess it would work with a very light fiberglass mat (like 30gsm or so) between the edges and the ruber. And put the ruber just ...

Ok, maybe there is a mistake in my calculations. I was a little in a hurry

Not infused any skis. But kiteboards and plenty other stuff (kind of my day job)...

with a core thickness of 4mm it will be a noodle. Even tough flax is way stiffer than a standard wood core, to get the same stiffness as a ski with 10mm wood core you need a 8.5mm flax core. And that will be quite heavy. Even if you go full carbon you still need a 6mm "core". Thats because...

any mechanical engineers out there?? ... yep! Made a rough calculation and according to that the max deflection is 7.7mm at 50psi. So the gap opening would be 15mm, which is a lot… For higher pressures this will increase linear. It’s calculated on the conservative side, but it will be in this order...

Nice one! I hope they sky as well as they look! At the last minute I decided to mark the midline of the running length right on the core with a sharpie. Didn't really let it dry and it bled a bit and doesn't look so great, but whatever. Use a NON permanent pencil next time and you wont have any trou...

Hmm, I think you might be wrong as well. :D Stiffness is proportional to the thickness cubed for plain material, but not for a sandwich. The sandwich stiffness is the sum of the stiffness of the core and the stiffness of the two face sheets. The core gets stiffer by the thickness cubed but the face ...

carbon fiber has about 4.7 times the specific stiffness as fiber glass.
I'm talking about a T700 standard carbon fiber type, but there are huge differences from carbon fiber type to type...

Nope, linear dependent. Your fatty should be 50% stiffer than the 80mm one... But if a ski is flexed, tail on the ground, tip in one hand, the other hand bending ( 3 point bending), the bending moment on the ground is zero, max below the flexing hand and zero again on the tip with a linear distribut...

I wouldn't go too light with the fabric. You might weaken the ski because face wrinkling (or was it buckling? I always mess up the words in english...) Will occur more likely. That said I don't know what "too light" is. But probably a mix between a thinner core and lighter fabric might be ...

That's how it's recommended by Bcomp. Either mill a pocket and put hard wood or a cotton/phenolic resin plate in there, or just use an additional sheet of titanal.