DIN Settings

Well, the person's real but it's just a made up name, see?

Thank you all for your thoughts. The age adjustment is (I think) a bit of a given! I’m not sure where caution lies though - too low a setting is probably as dangerous as too high. I wouldn’t like to lose a ski at speed.

Using http://www.mechanicsofsport.com/skiing/equipment/bindings/din-calculator.html I get:

______50+ 50-
Type II 6.0 6.5
Type III 6.5 8.0

I think I’m going to stick with 7 for now. I haven’t problems with that in the past, and it’s in the middle of the range that I occupy if >50/Type II comes out as a 6 and <50/Type III comes out as 8.

Edited to try to fix formatting problems caused by the conventional symbols for “less than” and “greater than”..!

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If in doubt drop the setting by 0.5 and see how you go on. If you haven't popped out in a month drop it again. I'd prefer to be as low as I can manage with for general skiing.

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Boot sole length also has an effect on predicted releases, a shorter length can increase the DIN setting quite a bit. I have a 304mm BSL and have had SL skis pop off at slow speed off piste at DIN 10 with no perceptable force applied to my legs.

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I think I'm about 6.5 or 7... I'm 172ish cm and 69 kg so not heavy... coming up on 48 soon and I try to not keep them too tight since I blew out my right knee last year and I don't want my binding to not release. That said, just spent the week skiing and bindings never released but also only fell once... maybe didn't ski hard enough or whatever. My knee is fine so the setting must have been good.

After all it is free · Last edited by After all it is free on Sun 24-03-19 2:32; edited 1 time in total

I really shouldn't read this type of thread at this time of night after a long day. I want to shout "yer all fullashoite" . . . but you're not. It's almost impossible for us average plebs to empirically measure each individual binding release force vectors (both nose and heel) and create an algorithm to use our multitudinous physical variations with those measurements. . .

Yup, bullshoite rolling eyes

and whilst I have enormous respect for @spyderjon, not everyone and very few of us at 50 have bones crumbling to dust. Exercise, diet and activity can have bone strength retained into our 80s . . . but that does require an element of dedication and selfishness.

The better you ski, the better you can read the hill, the terrain you choose, the quality and certification of your bindings defines how you set you release values. I ski very hard on DIN5 . . . 'on piste' . . . doesn't work so well in off-piste crud. When I get better in the frozen crap I may well be able to slide on shoite with a DIN5 . . . so . . .

Should I practice on a low setting and enjoy the experience of free-fall . . . or wind them up and get the 'chopper' ride I've always wanted as my knee dissolves to jelly?

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Totally confused as to how all you very strong male skiiers can ski on DINS of 5, whereas the charts give 6.5 for a type 2, small, light female!
Can only think it’s because I have stupidly small feet, but why does that make such a difference? Intuitively I would have thought a short boot capable of exerting less leverage than a long one Puzzled

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@swoafs, the 'force' the binding needs to hold you in the binding is 'amplified' by the longer lever of a longer boot sole.

So long boot sole means a lower DIN will hold you in the binding more, shorter boot sole means you need more DIN to hold you in (for a given skier weight).

The ' **** 's are because I suspect 'force' and 'amplified' are the wrong words really, but you get the drift.

snow reports

@midgetbiker, so why is that conflicting in my head with my GCSE physics that the longer a “lever” (boot), the greater the force applied at one end when an equivalent force (eg upward projectile of skier body in a-over-t manoeuvre) is applied at the other end?

That would mean a longer boot would apply more force and need a higher DIN to hold it in than a short one???

Clearly I’m missing a fundamental point here because I do know you’re right, just can’t work out how!!

@swoafs, You're thinking about it backwards, it is the 'force' that the binding DIN is sending down the longer lever to keep you in the ski.

Imagine a see saw with a child sat on one end. The child's weight is trying to lift the other end of the see saw (pop you out of the binding) if you push down on the see saw on the other side to prevent this (DIN setting) then the further from the fulcrum you are (the longer the BSL) then the less force you need to prevent the see saw rising (lower DIN to stop you popping out).

I think.

You know it makes sense.

Here's the current DIN chart (2012/2013 was the last time it was updated)

Let's look at an under 50 yrs old 175cm tall type II skier skier weighing 76kg with a bsl of 305mm. The din setting would be 6.5 (ie the intersection of the horizontal line L and the 291-310mm bsl column). If you continue along the L line to the right hand end two columns you'll see the figures 58 and 229. These are the actual Nm of force required to twist laterally out of the toe binding (58 ) and pull vertically out the heel binding (229).

Note that all of the din settings detailed along line L (ie 7.5 / 7 / 6.5 / 6 / 5.5/ 5) all release the binding at 58/229Nm, the only difference between them is the boot sole lengths.

Otherwise you'll just go on seeing the one name:

Brain is slowly processing (sure I used to think quicker in my yoof).... thank you @midgetbiker, and @spyderjon, for the explanations!

Help!!

DIN Settings

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