(Another) Dynafit Binding Failure

While Dynafit celebrates 30 years of 'tech' style alpine touring binding/boot systems, some users are simmering with frustrating failures of Dynafit products. I have experienced two binding heel piece failures in 17 ski days, and one of my ski buddies suffered an essentially identical failure during this same period.

These failures occurred on the 'Radical'-style heel piece. The top portion of the binding, including the heel pins, separates from the lower portion of the binding. In the most recent failure, it appears that the failure initiated with the two screws connecting the top plate to the lower portion of the heel piece.

Intact Heel Piece on the Right

The two screws forward of the heel elevator mechanism connect the binding top plate to the lower portion of the binding. In my most recent heel piece failure, remnants of these two screws were still present.

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I believe the two screws failed, and then the rear portion of the binding plastic failed due to the upward force on the heel pins

Dynafit was one of the most significant skiing innovations in my lifetime. But, the failures described in this post, and other failures not described here, indicate that we need a more robust, yet still lightweight, binding/boot system for alpine touring.

Heel Piece Plastic Fracture Surface in Red Polygon

Magnum

Still thin down low

And thin up high in some places

Above the clouds, in the moment

Photocredits: Kruser & YT

2014 Late Start to Tincan Winter

Alaska's most popular backcountry skiing (and boot packing) destination must be Tincan Ridge at Turnagain Pass. Rainy weather at the road and stormy in the alpine did not dissuade seven powder-starved souls that endured the weather and the hike.  By late November, a normal winter would have well worn ski track and boot packer track in a good snow pack from the Seward Highway through the forest and up to the alpine bowl. But 2014 snows were late, and hiking the first 300-ft vertical was required November 22.

Drizzly, Drippy FUN!

Skinning was possible just above the intersection of the Iditarod and Tincan Ridge Trails. Above timberline, Kruser, Doc and yours truly wandered around semi-lost in the alpine whiteout, but relied on our combined experience of nearly 100 seasons of skiing this mountain, plus a brief window of visibility, and persevered to our normal Tincan turnaround. The visibility window vanished for our descent, but the alpine bowl snow skied really well. Even though the vertigo-inducing whiteout had us asking ourselves if we were moving or motionless a few times, we remained upright and enjoyed the first lap so much, we returned for another.

Our Blustery Turnaround

Knuckle draggers outnumbered the skiers 4 to 3, skinners outnumbered post-holers 4 to 3, men outnumbered women 7 to 0 and humans to dogs 7 to 1.

Doc Dropping In

Kruser brought his waterproof camera and collected all of the photocredits. And he deserves all of the rallying credit as yours truly's will was wilted by the rain at the road. Thanks Kruser! Your rally call led me to powder!

Fondly recalling this route from free-heeling days with sub-70 mm wide skis at the widest ski tip, we had a terrific time on our contemporary alpine touring gear with skis exceeding 100 mm at the under-foot narrowest width. During our ascent, we imagined the way back down would be hideous. But, we enjoyed the skiing all the way down to the Iditarod Trail, and the 2" fresh snow made the hiking more tolerable than we had imagined.

While the fresh snow made our hike out a lot easier, we still managed to get muddy boots hiking across the unfrozen meadow.

Return to Patrick's Line

October skiing at Crow Pass, Alaska became a tradition because this place has accessible glacial terrain and early snow. Halloween 2014 continued the tradition for Kruser and yours truly with an excellent tour up the Summit Mountain Glacier, down Patrick's Line toward Raven Glacier and back home via Crow Pass. For us, the Crow Pass ski trip tradition goes back to the early 1980's. 

Long Time Since We've Skinned from Trail Head in October

Boney, but Skinnable

Windy Corner

On many a trip nowadays, one of us will recall our conversation from the 1980's that asked the question, "Do you think we'll be doing this when we're in our 40's?" At the time, forty years old seemed far too old to be doing what we were doing in our 20's. The reader must do the math, but the answer has been affirmative plus a good number of years.

But contemplating the question in greater depth, the answer is not simple mathematics. The gear we used in in the early 80's - leather boots, skinny skis, and 3-pin bindings would probably yield a failed trip, i.e. broken bodies, 30 years after the question was originally posed. Our current technology of wide and lightweight skis, fixed heels for the descent, stiff boots, and nearly frictionless pivot for the ascent has increased yours truly's 'ability' and enabled this trip well beyond my 40's.

And, with age comes satisfaction with the knowledge that what some lesser experienced have concluded "no-go due to crevasses", can be a safely skiable, untracked powder paradise if you know where, and where not to go.

Moraine - Jewel Mountain (Right)

Toe of Jewel Glacier

You gotta go to know - after viewing the weather update in bed at 6:00 a.m., I had to repeat this thought a few times before finally rousing to go. The weather forecast was accurate: blustery and snowy. But, we managed to find enough windows to see and thoroughly enjoy the route. Knowing the route helped 'seeing it' with the in-and-out visibility. There are numerous crevasses deep enough to kill - this trip is not recommended. Crevasses and snow bridges change over time - we found some surprises requiring extreme caution in our glacier travel method.

"Seeing" the Route

Summit Mtn Glacier

Tracks Lead into a Crevasse

Following our tracks would be very risky - there are many open and deep crevasses. Extreme caution is required to safely navigate Patrick's Line.

Patrick's Line to Raven

Lower Patrick's

Patrick's Line is nuanced below the glacier with swales filled-in with snow and adequate inclination to ski but not so steep that skis hit rocks with more forceful turns.

Raven Glacier - Looking North from Lower Patrick's Line

The 2014 October snowpack was terrific at the trail head and lower portion of the Crow Pass Trail, but up high it is mediocre to thin. The storm Kruser and yours truly endured on our Halloween 2014 trip likely added a significant amount.

Touring Back to the South in Blustery Winds

Crow Pass Cabin - A Welcome Sight on the Return

Great Place for a Break from the 30 mph Winds

Back on the Trail

Open Water on Crow Creek

On Our Way Home

Rocks!

And Other Hazards

Crow Pass has a rich history of mining and skiing, almost 100% compatible - the abandoned mine tram cables an exception. Though my ski bases are worse for a few rocks, the ski home was a lot of fun. For the end of October, coverage on the lower section was as good as I've seen it.

Photocredits: Kruser & YT

Pastoral Autumn 2014

Kruser, mw, and yours truly toured to Pastoral in boot-top fresh snow.  The glacier skied well, but we scraped through to rocks or tundra on many turns on the return from Taylor Creek Pass.

An early start

After starting up in the dark, the warm sunshine was a godsend. We had a thin snowpack, but good ski up to the pass. The uptrack to Taylor Creek Pass was great - return was rocky. Beyond the pass, mounting the glacier was tricky and rocky.

mw at Taylor Creek Pass back lit by the rising sun and Pastoral

The concentration of crevasses was worrisome, but not too surprising given the low snowpack of last winter.

mw on the Return Leg at the Glacier Mount

Finding the right place to mount the glacier was tricky, but worth the effort. On the outbound leg, we descended mw's uptrack with skins on - it was rocky.

Susitna Rainbow

Yours truly witnessed the annual metamorphasis of Johnny Rocketship to Johnny Master Angler in waters that originated as powder in the Talkeetnas. Was it possible that the waters we waded were a continuum of the powder we skied?

The Susitna Valley is home to some beautiful fish, some call it the Leopard Rainbow.

Johnny Angler tempted the fish with what appeared to be the perfect morsel. These fish had a lot of energy and the swift water provided plenty of power to help them put up a fair fight. The 'bows were not worse for the wear as they returned to their lairs to lie in wait, ready to pounce on unlucky smolt migrating to the sea.