Tyrolia TRB ski mountaineering binding was somewhat popular in the early to mid 1980s due to the alpine looking toe, reasonably solid alpine feel and functional heel lift. The binding suffered from durability problems and was quite heavy at more than two pounds each. In terms of historical perspective, the most interesting thing about the TRB is the double toe pivot, comprising one pivot ahead of the boot toe, and one pivot in the bottom plate a short distance aft of the boot toe.
Interesting AFD on the TRB consists of two rubber bands riding on greased tracks, ostensibly they move sideways to allow lateral release of boot. This is a lightweight and simple solution to providing an AFD for a plate binding, though the rubber bands are subject to damage and don’t do well in dirty or dusty environments as the grease picks up debris.
Weight: 32.6 ounces, 924 grams (one binding, with screws)
These bindings were donated to our collection by Peter Kelley, thanks Peter!