– The Backcountry Ski Site
  • Avalanches
  • Gear Reviews
    • Ski Reviews
    • Boot Reviews
    • Binding Reviews
    • Snowboard Splitboard
    • Book Reviews
    • Avalanche Beacon Reviews
    • Airbag Backpacks
    • Backcountry Electronics
    • Misc Gear Reviews
  • Podcast
  • Tips & Tricks
    • Ski Touring Basics
    • Boot Fitting
    • Fitness & Health
    • Gear Mods
  • Trip Reports
    • Fourteeners
    • Huts – Cabins – Lodges
    • Denali McKinley
    • 8,000 Meter Skiing
  • Stories
    • History
    • Humor
    • Land Use Issues
    • Evergreen Ski Touring
    • Poetry
  • Resources
    • All Posts Listed
    • 100 Recent Comments
    • Backcountry Skiing & Ski Touring Webcams
    • Ski Weights Comparison
    • Archives of WildSnow.com
    • Authors Page
    • Ski Touring Bindings
      • Trab TR2 Index and FAQ
      • Salomon Guardian & Tracker
      • Naxo Backcountry Skiing Bindings – Info Index
      • Silvretta Pure Backcountry Skiing Bindings – Info Index
      • Marker F10-12 Duke Baron
      • G3 Onyx Ski Binding FAQ
      • G3 ION Ski Touring Binding
      • Fritschi Backcountry Skiing Bindings – Info Index
      • Fritschi Diamir Frame Bindings Mount DIY
      • Fritschi Diamir Bindings FAQ
      • Fritschi Tecton FAQ
      • Atomic Salomon Backland MTN
      • Dynafit Tri-Step Binding 2001-2003
      • Naxo randonnee alpine touring AT ski binding FAQ
      • Dynafit Skiing Bindings – Info Index
      • Dynafit Binding Frequently Asked Questions FAQ
      • Dynafit Beast 16 FAQ Review 1
      • Dynafit Beast 16 FAQ Page Two
    • History
      • Ski Touring Binding Museum
      • Trooper Traverse Intro & Index
      • Randonnee Ski Touring “AT” ski gear — What is Hip?
      • Chronology
    • Backcountry Skiing Core Glossary
    • Gear Review Policy & Disclosures

– The Backcountry Ski Site

  • Avalanches
  • Gear Reviews
    • Ski Reviews
    • Boot Reviews
    • Binding Reviews
    • Snowboard Splitboard
    • Book Reviews
    • Avalanche Beacon Reviews
    • Airbag Backpacks
    • Backcountry Electronics
    • Misc Gear Reviews
  • Podcast
  • Tips & Tricks
    • Ski Touring Basics
    • Boot Fitting
    • Fitness & Health
    • Gear Mods
  • Trip Reports
    • Fourteeners
    • Huts – Cabins – Lodges
    • Denali McKinley
    • 8,000 Meter Skiing
  • Stories
    • History
    • Humor
    • Land Use Issues
    • Evergreen Ski Touring
    • Poetry
  • Resources
    • All Posts Listed
    • 100 Recent Comments
    • Backcountry Skiing & Ski Touring Webcams
    • Ski Weights Comparison
    • Archives of WildSnow.com
    • Authors Page
    • Ski Touring Bindings
      • Trab TR2 Index and FAQ
      • Salomon Guardian & Tracker
      • Naxo Backcountry Skiing Bindings – Info Index
      • Silvretta Pure Backcountry Skiing Bindings – Info Index
      • Marker F10-12 Duke Baron
      • G3 Onyx Ski Binding FAQ
      • G3 ION Ski Touring Binding
      • Fritschi Backcountry Skiing Bindings – Info Index
      • Fritschi Diamir Frame Bindings Mount DIY
      • Fritschi Diamir Bindings FAQ
      • Fritschi Tecton FAQ
      • Atomic Salomon Backland MTN
      • Dynafit Tri-Step Binding 2001-2003
      • Naxo randonnee alpine touring AT ski binding FAQ
      • Dynafit Skiing Bindings – Info Index
      • Dynafit Binding Frequently Asked Questions FAQ
      • Dynafit Beast 16 FAQ Review 1
      • Dynafit Beast 16 FAQ Page Two
    • History
      • Ski Touring Binding Museum
      • Trooper Traverse Intro & Index
      • Randonnee Ski Touring “AT” ski gear — What is Hip?
      • Chronology
    • Backcountry Skiing Core Glossary
    • Gear Review Policy & Disclosures
   

Sportiva Synchro Double Power Tongue Swapology

by Lou Dawson March 13, 2018
written by Lou Dawson March 13, 2018

(This post sponsored by our publishing partner Cripple Creek Backcountry. We hear they are into tongue swapping.)

Left to right. Original Spectre tongue makes and effort, with bellows hinge, but still obstructs natural touring stride. Sportive two piece power tongue solves the problem. Installed on Spectre. Install hints: Tongue mount can be loosened just enough to pop tongues in and out, but in doing so you might drop a T-nut from the inside. If that happens stick the T-nut up with a square of duct tape so it's easy to re-insert screw.

Left to right. Original Spectre tongue makes an effort at walking freedom, with bellows hinge, but still obstructs natural touring stride. Sportiva two piece ‘Double Power’ tongue solves the problem, installed on Spectre. Install hints: Tongue mount can be loosened just enough to pop tongues in and out, but in doing so you might drop a T-nut from the inside. If that happens stick the T-nut up with a square of duct tape so it’s easy to re-insert screw.

Sorry kids, this isn’t a kissing howto. You can find that over at Cosmo. Meanwhile, La Sportiva’s Double Power Tongue is one of the best ski touring boot innovations in years (see Synchro review for more details). This cultural event is not quite on the level of when cavemen went from bare feet to sandal, but close. In case you’ve been out of touch, perhaps living in a crevasse on the Kahiltna, the idea is simple. Read on.

Regular “tongue” style boot shells have trouble allowing adequately free forward motion in touring mode, due to the shell tongue obstructing forward movement of your shin. Providing some sort of hinge in the tongue is the usual solution, but doing so compromises downhill stiffness. Sportiva’s two piece tongue is easy hinged for touring (though we’d like it to be totally free hinged) , and stiffens up when you buckle down by virtue of a separate smaller-stiffer tongue the keys into the underlying full tongue. (Other companies have tried this sort of thing over the years, but in our opinion never this effectively). Sportiva’s solution works, albeit you need take care down to align the two tongues when buckling. You get used to it, and it’s worth it.


Secret sauce, the darker part matches up with  the orange cutout, locking together when the boot is buckled.

Secret sauce, the darker part matches up with the orange cutout, locking together when the boot is buckled. Getting the parts to mate during buckling is easy, a bit tougher configuring for walking as a buckle that’s too tight will lock the parts together.

Of course you mod-happy readers of WildSnow.com have already asked: “Swap this to the earlier Spectre models?” Sure. And more.

Orange on yellow? Hey, it's La Sportiva, need we say more?

Orange on yellow? Hey, it’s La Sportiva, need we say more?

For grins, I swapped a Sportiva tongue to a Scott Cosmos 3, am pleased with the results.

For grins, I swapped a Sportiva tongue to a Scott Cosmos 3, am pleased with the results. Problem: the tongue is sold WITHOUT the hing-holder bracket the screws go through. That part might be available as well, I got mine from an old pair of original Spectres we have here for parts.

Sportiva bracket on Scott Cosmos.

Sportiva bracket on Scott Cosmos. The holes nearly line up, I egged them out using a roto-cut bit on rotary grinder.

Tape backing for T-nuts.

This type of project requires three hands, if necessary back the T-nuts with a square of tape so they don’t fall into the boot shell as you attempt to thread screws.

Good result.

Good result.

The info you need for ordering, probably through a dealer.

Some of the info you need for ordering, probably through a dealer. Sportiva ITEM NUMBER is 49H in their catalog.

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
0
Email
previous post
Black Diamond Coefficient and First Light Hoodies at Valdez
next post
North Face Women’s Summit Proprius Kit

Trip Reports

  • A Small Hut for Big Skiing in the San Juans: Aladdin’s Lamp

    April 23, 2024
  • Revisiting a 2011 Trip Report: Adventure in the Pickets — Thread of Ice Ski Descent

    December 9, 2022

Avalanche Department

  • Ask a Forecaster: Q&A with CAIC’s Andrew McWilliams

    March 10, 2024

Tips & Tricks

  • Transition Efficiencies 101 with Tech Binding Heel Units

    January 6, 2023
  • Visualizing the Backcountry as a Splitboarder: Minimizing the Challenges of Movement by Anticipating Terrain

    December 5, 2022
  • TURBOCHARGE YOUR TRAILHEAD BEACON CHECK

    November 15, 2022

Recent Comments

  • Daniel on Backcountry Ski Boots Buyer’s Guide: The Touring Boots Worth the Money
  • Jim Milstein on Best Touring Packs for Guides and Daytrippers
  • Bergen Tjossem on Much more than a steep ski: Fischer Transalp 92 CTI Long-Term Review
  • Maciej on Much more than a steep ski: Fischer Transalp 92 CTI Long-Term Review


  • Facebook
  • Twitter
  • Instagram
  • About Lou Dawson
  • Terms of Service
  • Authors Page
  • About
  • Contact
  • Advertise
  • Copyright & Legal
  • Website Security

@2025 - All Rights Reserved. Designed and Developed by WildSnow


Back To Top

Read alsox

Polar Star Inn Hut Report: Mellow...

March 7, 2025

Best Touring Packs for Guides and...

March 3, 2025

Moment Wildcat 108 Tour Long-Term Ski...

February 10, 2025