As early Dynafits came on the scene, other binding makers attempted to enter the lightweight game. Fact of the matter: when skiers buy touring bindings the scale rules. In 1991 the Emery Chrono ski binding was a contender in the weight game, and somewhat popular among the fanatic light-and-fast crowd. While basically a plate (frame) binding, the Chrono had one incredibly innovative feature: A vertical heel release that was built into the heel clamp lever, with spring tension provided by rubber bands. Check it out.
Plus-minus adjustment shown at top is for side release tension that uses an ingenious combination of ramp and vertical compression spring. When the jaw rotates, it climbs up a ramp and thus meets resistance from the spring, creating release tension. While not ideal in terms of elasticity and friction, this weighs a fraction of most other toe-wing style release systems.
In all, we’re still amazed that a plate frame binding could be made this light in weight. While probably not suitable for high energy extreme skiing, the Chrono no doubt stood steed for many excellent tours in the early 1990s.
Weight (one binding with screws and adapter): 17.2 oz, 488 gr
Thanks goes to David Erskine for donating these bindings to the WildSnow collection.