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traumatizing... bad fall and related din setting/problem analysis

post #1 of 15
Thread Starter 
Hey all. Decided to jump the train tunnel in Truckee again today. The place I found ended up to be about 35 feet. About a foot of powder with all spring ice/corny stuff under that. I already ride with a din of 9 when I should ride with a 6. Upon impact I blacked out first of all, but they say I did a double roll and stopped. This was of course preceded by a double ejection. I woke up as soon as I stopped, just in time to see my pocket rocket cruise out the bottom of the bowl and off another cliff. I climbed up, strapped in, and skied after it the best I could. Was I just too far forward? I think my helmet hit my knees. Can my din be set higher or did I really need to double eject? Thanks
post #2 of 15
I dunno! I'm still trying to work this out for myself. I skiied on 5.5 for ages, way too low. It became a problem in bumps and pow, so I filled out the form and it came to 6.5 So I upped it to that, but at A Basin just before my cert 2 exam, I slammed my tips into a big mogul, the skis didn't come off, and my feet twisted inside my (foamed!) boots. did something slightly weird to my knee, too.

So I turned them down to 6, but at Breck the other day some sticky crust ripped one of the skis off...
And like you, i'm wondering if that ski needed to come off, or didn't.
post #3 of 15
Thread Starter 
Can anyone with some sort of an analytical mind and an understanding of bindings or ski-related injuries help us out? Please.
post #4 of 15
Were the heel pieces cocked open or did you have to recock them to get back into the bindings?

I ski fairly aggressively with bindings set at 5.5 despite my exceeding 200 pounds and had three releases this spring when my dominant ski hit a hole between slush or crud piles. Each release, the heel piece of the ski that came off first was sprung open. I decided I was a little too pressured at the cuff, trying to power through the heavy snow, so I consciously backed off. I skied in similar and worse conditions for seven or eight more days with no releases.
post #5 of 15

I know you should keep your DIN setting adjusted somewhat less than "black out." Somewhere near an acceptable IQ.

What are you thinking????

You huck 35 feet, slam your head on you knees and complain that you blew out of your skis. I would have loved to see the footage. Those skis must have been doing some flexing.

What about your goggles man? What did you have the straps set at??


I couldn't help my self.

post #6 of 15
If you think you are smart enough to huck semi-stupid air. Then you should be smart enough to set your own bindings.
You should learn some balance in the air and how to land properly before you get yourself hurt.

[ April 23, 2002, 06:36 PM: Message edited by: NordtheBarbarian ]
post #7 of 15
Thread Starter 
I huck big airs all the time. The size of this air was not very impressive. Just the hard pack landing. I simply misjudged the slope of my landing. A little steeper and the landing would have stuck. As far as din settings... I set my own. I'm just wondering if I can safely set any higher.
post #8 of 15
Super -mat

I have done such blow outs my self. Though I try not to, they are usually the result of hitting a
feature such as a cat track at too great a speed.
Bam!, head and knees collide, teeth crack and there you have it, a yard sale! Ah! to be young and expendable.

What I have discovered, is that in these massive compression hits, the ski flexes beyond the compliance of the binding.
This is a mechanical thing. You just blow out. First you compress the bindings as the ski arcs on impact, then the bounce has you out of the binding before they can move back to the normal position. The distance between the bindings is greater than the boot length. You don't cam out which is the DIN adjustment.

Some bindings have a greater amount of Compliance than others. The Look/Rossi comes to mind. Even still, the binding would have to follow as rapidly as the ski flexed. This may be beyond any available units. Light weight would help here.

I don't think adjusting the bindings will save you from any grief under these conditions and upping the settings may hurt you during the tumble.

Stretch for your landings and try to soak it up when you stick. The higher the huck, the steeper the landing needs to be.

I hope this helps See you in the movies.

post #9 of 15
If you are not having pre releases in your normal skiing bumps, etc I would leave them at the lower setting.

A majority of the knee/soft tissue injuries are done at slow speeds. (slow twisting falls) not the high energy explosions. The reason for this is with your mass and speed there is a lot of energy built up. When you fall or hit something at these speeds the amount of energy that is released into your bindings is very high and POP! out you come. But when it is a slow fall, the energy does not all get released at once. The binding does not "see" a huge amount of energy so it does not release. If 100 % of your skiing is done at these high speeds loading your skis to that level at all times then It makes sense to crank them up a bit. (racers/mogul comps etc) for for the rest of us mortals that have to constantly make that last run to the bottom weaving through the slow signs and trails, I would opt for a release during a fall rather than a twisted or blown knee.
post #10 of 15
Thread Starter 
CalG and Dchan,
Thank you for you comments and explanations. I think I'm beginning to understand bindings a lot more. The concept of the binding spreading makes a lot of sense. Could it also be that it opens up more on the "snap" back? When the tip and tail both go back down, after bouncing up, it seems that the binding would be very open, leaving the boot to step out very cleanly. Well, thanks again. That helps a lot.
post #11 of 15

The binding overloads and flexes on compression and then
the binding opens on rebound.

We need some slo mo video. "want to get some film time?"

post #12 of 15
Originally posted by CalG:

The binding overloads and flexes on compression and then
the binding opens on rebound.

We need some slo mo video. "want to get some film time?"

Should this be in the Random Humor forum? "crash test dummys wanted"...
post #13 of 15
So the landing was too flat and hard. That's not Semi-stupid air, that's Stoopid air. Pick your landing better next time. If you are landing airs well the bindingsforces aren't that high, so bindings don't have to be cranked. Landing big airs can over flex and break skis. Good advice from Dchan and CalG.

See flex effect at

post #14 of 15
I feel very unfashionable; I've been coming out of the toes, not the heel. A little bird is whispering that I should leave them at 6, as pre releaseing and the golf-cart speeds I do is preferrable to not releasing when necessary. I h@te falling!
post #15 of 15
Salomon bindings?
My Marker turntables hold me in much better at the same din. I wouldn't buy salomon bindings again. My salomons pre-release all the time.
I can get away with more mistakes on my Markers.
I am forced to ski much more quietly on the salomons.
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