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Atomic Salomon Backland-MTN Binding Heel Breakdown

by Lou Dawson March 28, 2017
written by Lou Dawson March 28, 2017
Backland-MTN heel unit, in this case the Atomic version in orange and black.

Backland-MTN heel unit, in this case the Atomic version in orange and black.

Break it down! The Backland-MTN is a beautifully executed classic tech binding that combines both vertical and lateral release under the control of one U-spring. How do they do it? We dig in.

Atomic Backland Binding and U-spring.

Atomic Backland Binding with U-spring installed, as well as an example U-spring to left.

We just happened to have a damaged pre-retail Atomic MTN binding heel unite here at WildSnow HQ, shown here with lifter pin driven part way out and the length adjuster ground off.

We just happened to have a damaged pre-retail Atomic MTN binding here at WildSnow HQ, shown here with lifter pin driven part way out and the length adjuster head ground off. U-spring to right.

Pin out of top, lifters removed, U-spring to right.

Pin out of top, lifters removed, U-spring to right.

Heel lifters off, but, tower still wouldn't come apart.

Heel lifters off, but, tower still wouldn’t come apart.

Aha, looking underneath tower, hex head machine screw.

Aha, looking underneath tower, hex head machine screw.

Boot length adjustment rod removed, hex fastener easy to access.

Boot length adjustment rod removed, hex fastener easy to access.

Extraction.

Extraction.

Off comes the top.

Off comes the top.

Exploded view of heel unit center tower.

Exploded view of heel unit center tower.

Top of tower with spring installed, showing what are clearly hardened steel glide surfaces.

Top of tower with spring installed, showing what are clearly hardened steel glide surfaces.

This depicts how the U-spring rides on the steel gliders.

This depicts how the U-spring rides on the steel gliders, on the tower ‘lobes’ that create release resistance by expanding the U-spring rods as the U-spring rotates.

Simulated lateral release.

Simulated lateral release.

When I busted the pre-retail tester (my fault) I was bummed, but every cloud has a silver lining. In this case, I had a binding to dissect! The Backland-MTN can probably be taken apart in a way that would allow reassembly, but I obviously didn’t bother with that here. In terms of wear and tear, it’s obvious this simple machinery could be quite durable. On first glance, you might wonder how well the housing rides on the center post, and how durable that assembly is. The machining on this part of the binding is impressively tight, and everything appears durable, but consumer testing is obviously key. We’ve got a couple sets of Atomic-Salomon bindings that have seen a number of days and don’t exhibit any problems. But the history of tech bindings as many of you know firsthand is fraught with disappointment. So we be watching things such as how the aluminum heel lifters interact with their steel axle pin.

More, we’d like to see one more spring option for fine-tuning release. We’re not sure if the spring is tunable as it is on some other U-spring bindings. Research is ongoing.


U-spring is basic, same as used on many other tech bindings over the last three decades.

U-spring is basic, same as used on many other tech bindings over the last three decades. The plastic housing snaps on, is screwed down to anchor the rear of the spring.

Related Links

FAQ for Backland MTN ski touring binding.

A few tech bindings compared.


Another one.

Low Tech

Lou Dawson

WildSnow.com publisher emeritus and founder Lou (Louis Dawson) has a 50+ years career in climbing, backcountry skiing and ski mountaineering. He was the first person in history to ski down all 54 Colorado 14,000-foot peaks, has authored numerous books about about backcountry skiing, and has skied from the summit of Denali in Alaska, North America’s highest mountain.

www.loudawson.com
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