The human foot is a masterpiece of engineering and a work of art.
Leonardo da Vinci
Despite what da Vinci said, skiers seem to have an inherent distrust in the structural capacity and integrity of the human foot.
In skiing demonstrations with ski boot prototypes based on the Birdcage it didn’t matter how hard I tried to explain to testers how the dorsal loading system worked and how little force was needed to secure their foot, it didn’t stop them from attempting to crush their foot by tightening down the dorsal plate until their noses bled. They were so conditioned by the persistent, ‘the tighter the boot, the better the ski control’ message that they just didn’t want to believe how little force it takes to activate the auto stiffening mechanism of the longitudinal arch (FIT VS. FUNCTION) and retain the foot in solid contact with the base of the boot.
In order to try and convince testers how little force was required to make their foot dynamically rigid one of our team members had a device we called the Logan Chassis designed and fabricated. The photo below is of the Logan Chassis aka The Convincer.
If it’s not obvious from the photo the Logan Chassis was very heavy. The components were milled from solid blocks of aluminum. The heel counter and a few other components are missing. But the photo should give you a good enough idea. This thing was a tank. This device was not intended for skiing. It was a pre-ski boot skiing test conditioner.
To demonstrate how little force it takes to make the foot so rigid it is like steel I would get the test subject to put their foot in the Logan Chassis. Then I would try to get them to adjust the knob on the screw to the point where it applied firm but gentle pressure on the dorsum of their foot making sure there was no discomfort. Then I would ask them to stand up and lift the foot in Logan Chassis off the floor and tell me what they felt. They were shocked. Hell, I was shocked when I tried this.
The Logan Chassis feels incredibly light and the foot feels glued to the base with no sensation of pressure or discomfort. It defies logic. But I doubt I would have to convince da Vinci.
The truth is whatever people are willing to believe.
The problem is that most skiers have been convinced to believe that tight is not just right, tight is might.