Originally Posted by markojp
Some T3's or T4's ( the old brown two buckle T3 is the same as the T4), a 3pin cable or a set of Rainey Superloops, some skis, and you're good to go.
There are also a ton of old Riva and Riva 2 binding in garages across America. Someone mentioned NTN... No need to go there. It'd be like fly fishing with grenades.
I skied XC/Downhill for 20 years and I ended up with three setups for that purpose:
(1) Rossi BC6 boot with 3 pins and narrow ski for groomed trails and occasional off trail (I just never adapted to NNN, NNN-BC, on SNS-BC);
(2) Scarpa T-3s (old brown ones) and 3-pins on AT skis up to 76 mm waists for alpine touring & ski mountaineering; and
(3) Scarpa T-2s with 3 pins for AT 70 mm+ and alpine (e.g. Atomic R:EX) for skiing more difficult snows.
The T-3s and T-2s have a sufficiently rigid sole that a cable binding is not necessary and a 3 pin only set up is so much lighter (but the newer cable binding with free pivoting toes for going up hill are very nice too, altho on the heavy side.
I still have a BC-6/3pin/Madshus Epoch for groomed trails but when on XC ski patrol I use Dynafit TLT5s (no tongue, no power strap, just 2 buckles), Dynafit Speed Radicals, and Karhu Guides--a go anywhere do anything combo for groomed, beyond the groomed, steep, or flat. The XC only set is just a little lighter but so much fun when conditions are nice.
BTW, my wife's favorite telemark/ski mountaineering setup was brown t-3s, Rainey Superloops, and Kneissel Tourstar Ultras (a carbon-kevlar AT ski in the classic 90-70-80 dimensions).
We both now use AT gear for alpine touring/ski mountaineering; easier, lighter, safer, with bigger skis LOL
p.p.s.: I spent plenty of time on Riva cables, Voile cables, Voile CRB, Voile Hardwires, Voile Switchbacks, Rainey super loops, Rainey Hammerheads (I was a beta tester), 7 tm releasables, Armond Dubuque's Ultimate Tele Binding, etc. exc. and still went back to 3-pins.