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Bindings releasing prematurely

post #1 of 16
Thread Starter 
 My ski is the Atomic SL12 race stock, and the binding is the Race 614. I'm 160lbs, 5'9", type 3+, boot sole length 317mm, DIN set to 10. The ski occasionally gets ripped off my foot during a sharp/intense turn, or in ruts. I've gotten the bindings checked twice, and both stores couldn't tell me why I was popping out. I don't suppose anyone has any ideas as to what may be causing this?
post #2 of 16
not too far back is a very inclusive thread about just such issues. scroll back or search.
I think you will uncover some very ugly things said about Atomic bindings. and of course there is the recall.
post #3 of 16
Recall only affects 310 and 412 models.

Is the release from the toe or heel?
post #4 of 16
Also: if the binding is even remotely of the vintage of the SL12 ski, it's well after the recall, I believe. Atomic still only "went to 11" in their ski models when the recalled bindings were made (and for several years thereafter).

Based on anecdote and scuttlebutt, rather than the actual recall, the 614 could also have the same problem. But - as Betaracer notes - whether you're suffering from the "known issue" depends on whether it's the toe or heel that's releasing.
post #5 of 16
Thread Starter 
 I'm 90% sure it's the heel releasing. I'm not really familiar with the "known issue"... what exactly is it?
post #6 of 16
Check forward pressure. the binding sounds like it is working right. My friends your size use a din of 10 for free skiing up to 12, 13 to race, and turned up forward pressure. Binding din chart is for sport skiing, not racing. Check with Atomic for setting for racing.
post #7 of 16
 get rid of the skis and binding. the binding are an inferior design to what you can buy today.
post #8 of 16
 The Atomic athletes were still running that binding at this years Birds of Prey downhill.

If I had to guess, I'd say that you have too much forward pressure. People always want to turn it up, but if you go too far, the binding has to release when the ski flexes deeply.
post #9 of 16
The "known issue" was obviously inadvertent heel releases, due to something (I think I knew what once, but I don't remember) breaking inside the heel mechanism.

My highly imperfect understanding is that it affected all the Xentrix-style bindings (including the Race ones) other than the 1018, but only those of what are now fairly old vintage: specifically, the ones with the red colored shells, rather than the later ones with black shells with colored translucent plastic inserts.

Inconsistent with that understanding is the fact that Atomic recalled lots of models, but not the 614, so who knows?

Red shell, questionable:



Black shell, okay:

post #10 of 16
Atomic recall had to do with the heel cup, not how the binding release. I have the same thing with my Marker binding. It release, when I ski my GS ski like a SL ski.
post #11 of 16
I'm not a binding expert, but if the heel pre-tension is too tight, or too loose, it may not matter how high you try to set the DIN.
Another person here referred to it as "forward pressure"   It's the same thing.   Most bindings adjust at the heel for pre-tension.  Lots of people don't even know that.   I'm not saying you don't, but if it's to tight, like the guy said, your ski can pop off at the wrong time.
Setting the DIN  and setting the pre-tension are not the same thing.   If the pre-tension is wrong, the binding is not going to work right.
Good luck.  
post #12 of 16

Not sure about your binding model, but the older 614 Race Xentrix, and other Atomic Xentrix models shared a problem that was not related to the recall.  The forward pressure on most bindings is adjusted by putting the boot in the binding and tightening the screw until it it flush.  If you did this on some Atomics it could strip the adjustment screw, afterwhich the forward pressure would not stay fixed and the the heels would constantly pre-release.  Once this happens to your binding it is toast, unless it is rebuilt.  

Some of the Atomic Xentrixs required you to adjust the forward pressure without the boot in the binding:  put the boot in check to see if screw was flush, take boot out, adjust, put boot in, check adjustment, repeat.  If you did this the bindings worked great, but many shop mechanics adjusted them like all other bindings, and once they did, and the mechanism was stripped, you might as well throw the bindings away.

post #13 of 16
The pre-tension, or forward pressure screw, as Atomic calls it, should NEVER be adjusted with the boot in!   Always, and only adjust those with the boot out!   If not you can ruin the threads!  Go a couple clicks at a time, then put the boot back in, and check again.

Again, over cranking forward pressure is not going to let the binding work the way it's supposed to.
post #14 of 16
Quote:
Originally Posted by Jacques View Post

The pre-tension, or forward pressure screw, as Atomic calls it, should NEVER be adjusted with the boot in!   Always, and only adjust those with the boot out!   If not you can ruin the threads!  Go a couple clicks at a time, then put the boot back in, and check again.

Again, over cranking forward pressure is not going to let the binding work the way it's supposed to.
This is how I've always done it.  Even when I worked at a ski shop many years ago.
post #15 of 16
Quote:
Originally Posted by MLBfreek35 View Post

 My ski is the Atomic SL12 race stock, and the binding is the Race 614. I'm 160lbs, 5'9", type 3+, boot sole length 317mm, DIN set to 10. The ski occasionally gets ripped off my foot during a sharp/intense turn, or in ruts. I've gotten the bindings checked twice, and both stores couldn't tell me why I was popping out. I don't suppose anyone has any ideas as to what may be causing this?

Some people don't like Atomic bindings.  That's fine, but they are wrong to suggest that they are somehow an inferior design.

Repeating two important points already noted above (see betaracer, sjj, mudfoot, jacques):

1)  The Race 614 was not included in the recall.

2)  The forward pressure setting is important, and you must not adjust forward pressure with the boot in the binding.  I think the shop manual actually says that the heel should be in the open position -- if anyone has the manual nearby they can confirm or correct this detail. 

(Side note:  Tyrolia bindings carry the same warning.)

It doesn't sound like there is anything wrong with your equipment per se.  I'm skiing on the same setup and have had no equipment issues.  If the forward pressure screw had been damaged by someone adjusting this setting with a boot in it, the shop inspection should have picked that up.  You would also be blowing out a lot more than you've described if your bindings were damaged.  Also, if you gave them your boot as well, they would have confirmed the proper forward pressure adjustment as part of the inspection.

I have occasionally lost a ski in similar conditions as you have.  There is usually an "operator error" factor, but sometimes I do need to re-adjust the bindings.  If it's in a race course, and my bindings are at 8, it's because I forgot to crank them up.   If it's when I'm freeskiing, I just put myself back together and keep going. 
post #16 of 16
Quote:
Originally Posted by mohrgan View Post

This is how I've always done it.  Even when I worked at a ski shop many years ago.


 

I'm not sure if you meant it, but that is very good humor!   Be good up there!   Thanks for the conformation!
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