Binding and DIN Adjustment

posted in: Skis, Tech Tips, Winter | 0


Lets talk about DIN!

In many ways bindings and DIN settings are to skiing as Air bags are to cars:  If things go wrong they’re there to stop you getting hurt, or in extreme situations minimize how much you get hurt. I guess for the few of us who have got it wadded  up that bad, its more comparable to a cross between an ejection seat in a fighter jet, and a kid throwing a Rag doll across a room……

But seriously binding DIN adjustment is the one thing that should not be over looked in your ski setup. As a shop there are many restrictions and standards to which we must comply in order to set and adjust DIN settings.

DIN is a reference to series of pre-designated values anywhere from about 0.75 up to 18, which are  directly related to how much force it takes to make either the toe piece or heel piece release to boot from the binding. These values are recognized and governed throughout the ski industry.

Things that are taken into account when determining someone’s DIN are :

  • Age
  • Weight
  • Height
  • Boot sole length
  • Skier ability

As you can see this would make the setting pretty specific to the skier; change any one or more of these and you change the DIN setting.

What would happen if I skied someone else’s skis without resetting the DIN for myself?

What if the DIN were too Low? This could mean being prematurely ejected from your skis. Doesn’t seem like too big a deal if you are going to land in nice fluffy snow. But what if you are skiing trees, on or around obstacles or other skiers, dropping off something, hammering turns or just pinning it?  Its not sounding like as much fun now is it?

What if the DIN were too high?  It could mean the binding doesn’t release when you get into trouble.  This usually culminates with the forces ending up in your ankles or knees instead of dissipating in the binding. This is even more important in the case of young children or the elderly whose  joints aren’t as strong as they could be.

Here’s something worth thinking about…
We all know that metal fatigues. The release mechanism and governor of DIN tension in a binding is a big old metal spring. Most people have their DIN set and never look at it again. Now imagine a big old metal spring under tension for 5-10 years, metal fatigues right. As a shop we are not allowed to work on, mount or adjust bindings over 10 years old, for some companies its less for exactly this reason. As the spring fatigues the adjustment values on the binding are no longer accurate to the force it takes to release. Might be worth checking out the age of your binding. At the shop we have a list of all currently acceptable bindings for the current season, every season.