ASTM F939-19 PDF Download

A standard technique called ASTM F939-19 lays out how Alpine ski binding release torque values should be chosen. This procedure is used to make sure that the release torque is selected properly based on the type of skier, age, and other variables. Manufacturers of ski bindings may provide clear installation and use instructions by adhering to this standard, and ski shops can make precise changes to ski bindings that have already been mounted.

The typical procedure goes over how to choose the right skier type, figure out the skier code, and calculate the release torque value. Additionally, it states that the steps described in this practice are only to be used with releaseable Alpine ski, boot, and binding systems. Bindings that are not mechanical or that are used with boots that extend higher than midway up the lower thigh are not covered.

It's important to note that the release torque values chosen using this method may not be appropriate in some situations, such as when the skier is carrying an object that significantly increases their effective body weight, is holding or controlling an object, such as a sled, or is confronted with unusually difficult snow or terrain that is not typically present on constructed ski slopes.

Furthermore, the standard practice underlines that release torque levels that deviate from those suggested by this practice could put the skier at an increased risk of injury. However, skiers who are aware of this possible risk might ask for such settings, subject to any restrictions put forth by the binding maker.

Finally, it should be noted that the recommended release torque values given in this practice are meant for the initial adjustment of a ski binding and subsequent readjustments made during routine maintenance or after a suspected malfunction. These values are not intended to apply to the equipment's state following use. Relevant practices (F1063 and F1064) should be consulted for details on applicable tolerances for adjustment and inspection in retail or rental activities.