Telemark Talk / Telemark Tips Forum

Anyone else had this happen? This is the fourth time for me. Not exactly sure how a sub-120 pound person can snap dual 1/4" stainless extrusions like that.

What did Eric say? Did you get the bindings through him too?

I had the same thing happen to me at the end of the season last year. I am heavier than you 175lb) and pretty aggressive skier, but was still surprised by that level of failure. It snapped as I was dropping in a mogul line...ruined a great run lol.

I warranteed it directly with 22 designs. They sent me 2 replacement rear assemblies because I told them I wasn't too psyched to ski on the other one waiting for it to snap....

So far so good this season with the replacement assemblies.

Heart of the matter regarding stainless steel:
"Basic Metallurgy
Stainless steel is basically iron with sides of nickel, chromium and carbon. Together they make a metal that’s very hard and virtually immune to corrosion. It’s hardness can be an issue though because that makes stainless difficult to machine and form. Bend it too far and it cracks."

(From https://www.wileymetal.com/aluminum-ext ... ect-guide/)

maybe the steel material is not good. Looks like the strength is not enough.
Maybe can try other steels, such as 52100 steel round bar, 4340 steel, 4140 steel, 6150 steel and etc

I’m curious, do you guys remember in which meteorological conditions did you break your Outlaws? From my computer screen this looks really similar to the Rottefella toe cup problem. The toe cup had 2 issues, stress concentration and ductile-to-brittle transition.

First, the stress concentration in the bending of the rod. Stress concentrations occur when there are irregularities in the geometry of the material that cause an interruption to the flow of stress, the rupture seems to stat exactly on the end of the bend.

If the temperature was cold enough (-20C) when the snap occur, I might suspect also a ductile-to-brittle transition. (DBTT ductile-to-brittle-transition temperature) is a phenomenon that is widely observed in metals but too often underestimated but the ski designer. Below critical temperature (DBTT), the material suddenly loss ductility and becomes brittle. All ferrous materials exhibit a transition from ductile to brittle.

If anyone has a broken pair of binding that is not under warranty anymore for sale, i’d like to give it a try. I’m pretty sure I can come up with a permanent solution...

Bri7 wrote: ↑

Thu Aug 13, 2020 7:01 pm

From my computer screen this looks really similar to the Rottefella toe cup problem. The toe cup had 2 issues, stress concentration and ductile-to-brittle transition.

FWIW, I remember trying really hard to find a correlation between binding failures and temperature/conditions but couldn't find any. I broke as many Freerides when it was -20C as when it was +10C... Icy bumps or spring corn didn't make any difference...

I’m pretty sure I can come up with a permanent solution...

Trust me, he sure can.

Bri7 wrote: ↑

Thu Aug 13, 2020 7:01 pm

If the temperature was cold enough (-20C) when the snap occur, I might suspect also a ductile-to-brittle transition. (DBTT ductile-to-brittle-transition temperature) is a phenomenon that is widely observed in metals but too often underestimated but the ski designer. Below critical temperature (DBTT), the material suddenly loss ductility and becomes brittle. All ferrous materials exhibit a transition from ductile to brittle.

@Bri7
Perhaps a little more nickel sprinkled in?

@Bri7
Perhaps a little more nickel sprinkled in?

Too much variables, too less informations.

Which kind of SS was used? Martensitic, austhenitic or ferretic? Was the bend perform under heating? Is there a HAZ (heat affected zone) on the rod?

I’d like to see how titanium perform on that king of binding. I have a rod somewhere sitting in the garage...

Please make me a killer deal on your broken bindings!