The A-tele and B-tele skiing techniques have different braking mechanisms.Montana St Alum wrote: ↑Sun Dec 10, 2023 6:47 amI believe that to be the case. I think there was something in the thread about stomping the rear foot (apologies if I have that wrong) in the B-technique that sounds like a way of slowing. That would be unique to B-tely. It's an interesting discussion for sure. But the actual mechanisms of bleeding off speed seem to be the same to me once you get to the ski/snow interface. But everything that happens there is directed by what people do from the ankles up.
That could be longhand for the response "hmmm, I'm not sure". When it comes to lighter gear, I don't know what I don't know. I alpine skied for almost 40 years before I took up telemark and my strategies for controlling speed haven't changed in the almost 20 years since I took communion as a "genuflector".
In A-tele, the downward moment of the upper body is the main factor that helps to brake. For example, you need to quickly squat down to bend the skis downward to reduce speed significantly. Both skis will scrub the surface to brake. Once you reach the telemark position, you'll wait for the speed to decrease to a comfortable level and maintain the position. Since the bindings are heel-free and the telemark position is static, the skis carve very little and skid more than alpine skis. The braking action begins after the crossover, and the center of turn is located outside farther than that of B-tele, which means that the centrifugal force tends to be greater than in B-tele, so the braking time is longer.
In B-tele, the speed of the extension movement of the body is the main factor that helps to brake. The braking action starts right before the crossover due to the spinning motion of the body. The rear ski is mainly responsible for braking, and the lead ski carves the surface due to its swinging action and the boot, whose heel has contact with the binding. Since the center of the turn is located close to the body, the centrifugal force is smaller. All these benefits contribute to quick and efficient B-tele turns. Since the skier's stance is high and the energy loss is smaller than in A-tele, you can ski longer and stay in comfort. The B-tele turn is dynamic, with no stop motion included.
Please note that these are theoretical concepts, and actual results may vary based on the skill level of the skiers.