This has been bugging me for a while, I can't work it out in my head. I am pretty good a physics, but I have a feeling I am missing something obvious, so at the risk of looking stupid, I'm posting the question anyway.
The basic formula for DIN is a chart that considers the skiers height, weight, ability, age and boot sole length. All we really care about is the amount of torque potentially applied to the binding before it releases. Sole length applies to the lever and age and ability relate to the potential force the skier will tolerate. Obviously weight is a huge concern as it directly relates to force, but height? The skiers height doesn't really affect the lever in such a dramatic way, as the height is perpendicular to the force vector. I know the center of inertia is further from the fulcrum in a taller skier, but....
Isn't the most important factor the length of the ski? The ski, not the skier, is the lever, the longer the ski the less force is required to release the binding. Right? A longer ski will release with much less force than a shorter ski with the same DIN setting.
I'm just getting back to skiing so forgive the naivety. But do the charts use the height of the skier to presume the length of the ski he is using. In today's' market, any one skier could be using a variety of skis of different lengths all on the same day, with the same DIN setting, but radically different forces at work. Whats the length range in your quiver, I bet it's close to 50cm for some.
Set me straight guys before my head explodes.
Oops, can't edit my dyslexic lenght out of the title, sorry