Dynafit Boot Fittings – Everything You Ever Wanted to Know


This post by WildSnow.com blogger  

I got curious. How exactly is a Dynafit toe fitting held in a boot, how easy is it to remove, and how much does it weigh? On the alter of blog I sacrifice a worn out pair of Scarpa Laser backcountry skiing boots:

Removing Dynafit fitting from backcountry skiing boot.
The Dynafit toe fittings are easy to remove. Just grind the sole off, grind away a bit of plastic around the edges, and the fitting pops out when you pry it up.

Dynafit boot fittings.
Dynafit fittings removed from boot. Weight 1.1 ounces (32 g) total, per boot. (Coin for scale).

People have had mixed success with installing Dynafit fittings themselves. In mine and many other people’s opinion, there are so many great Dynafit compatible boots out there, why spend the time to make them yourself? But then, who am I to judge other backcountry skiing modders? If you’re curious, here is the article written by one guy who did it.

Comments

8 Responses to “Dynafit Boot Fittings – Everything You Ever Wanted to Know”

  1. Greydon Clark March 22nd, 2006 4:08 pm

    Seems like a cool mod if you were adding a hiking sole to an alpine boot.

  2. jason August 19th, 2009 4:43 pm

    Hi Lou,

    i’ve had a few problems with my scarpa spirit 4′s, the most annoying being that the tech fittings in one of the boot are off alignment significantly (to me, at least). one of the boots is spot on (lines up perfectly on a jig mount, as well as other’s skis), and the other is off by almost 5mm to the side (ie, the heel fittings are off center of the heel pins by 5mm). from my calculations, this amounts to approximately 1 degree, which seems minuscule, but amounts to the tip of my ski being off center by over 1.6 cms. i have been able to alleviate this problem somewhat by having a dedicated right and left ski by having the toepiece cocked (after mount, screws backed up, then the boot toe locked in and adjusted somewhat, then the screws re-tightened), but this creates other problems (uneven edge wear, in-ability to share skis, problems with having multiple boots, weird pivot when skinning, etc), and it doesn’t seem like this completely solves the alignment issue either.

    I understand that there is some inherent natural error in the manufacture of tech fittings, but wouldn’t you be upset if you had alpine bindings mounted and the heel unit was 1cm closer to one side than the other (what being off center by .5cm amounts to)? during winter it seemed not worth dealing on this as i need boots to ski, but is this within tolerable error or deserving of a solution from scarpa?

    on a somewhat related note (issue with scarpa)… As of late, some boot manufacturers who have partnered with intuition have decided to use a thinner foam around the sides of the toe-box in their thermo liners, which is a contrast with the prior 3-peice wrap construcion. I know this is a marketing gimmick to make boots feel more comfortable out of the box, but thermo molding seems to be standard operating procedure in AT boots. seeing how one of the most common boot fit problems is inflammation of the 5th metatarsal creating a “6th toe,” what real good comes out of this (there is less padding around the 6th toe to alleviate pressure due to the limit of the thinner foams thickness than if the liner was a uniform thicker foam – no problem is created by uniform thick foam because foam is compressed during molding procedure) , and how do we get the boot manufacturers to stop doing this? the original wrap design hit the nail pretty much on the head, and it’s frustrating having to replace intuition liners that come with the boots for intuition liners from the store.

    Thank’s for your time and your seemingly limitless gear insights

  3. Mick McLennan August 19th, 2009 5:25 pm

    I had the same problem with a new pair of Spirit 4′s this spring (size 27.0). Sent them back to Scarpa, after Lou gave me the advice that this is definitely not correct – thanks Lou – been meaning to follow up with you but summer got in the way. I believe they have a widespread problem. But I finally got a pair that was nearly straight. Scarpa was very helpful in the end.
    On a related note though, there is almost no clearance with the ST dynafit toe piece with the plastic near the pins. It is worse than with an old pair of classic toes. I plan on removing some of this plastic with dremel or file so that it doesn’t stop the pins closing fully.

  4. Lou August 19th, 2009 6:10 pm

    First, the boots. What Mick said. Like any boot maker Scarpa is only as good as their quality, and they stand behind their product if something gets through their inspection and quality control that doesn’t meet their standards (that’s one of the best things about Scarpa). So yep, boots with Dynafit fittings should be interchangeable left/right with properly mounted bindings, perhaps with very very very small variations, much less than you describe and that do NOT require having a right/left binding. If the boots are not right, the answer is simple, they should be returned on warranty.

    As for the liners, it’s been true for some time that the best liner designs are compromised by the need for the unmolded “store fit.” The egregious example of this is liners that are lined with a thin layer of non-thermo foam so they feel more cush when you first put them on, but which simply compresses after a bit of use and thus makes the boot feel sloppy. It goes on and on… My only suggestion is that working with a good boot fitter and knowing the options (and being ready to purchase after-market liners in some cases) are the only ongoing solutions. If a boot doesn’t feel good in the shop, it’ll get aced out in sales by the ones who do, so things are not going to change in that area anytime soon.

  5. jason August 20th, 2009 12:39 pm

    thanks a million Lou!

  6. Stretch March 10th, 2010 9:09 pm

    Hi everybody.

    I’m wondering if anyone has experimented with modifying alpine climbing boots to work with Dynafit fittings.

    Here in New Zealand you often fly into a hut for some mid-winter glacier skiing and climbing. I’d like to mod a pair of Scarpa Omega’s to fit in a Dynafit binding simply for approaching climbs. I don’t want to have to haul two pair’s of boots across to the climb, or have to climb in the touring boots.

    Any comments folks?

  7. Angus August 22nd, 2010 4:21 pm

    Hi. Along the same lines as Stretch’s question on 10 March, I’m looking at a pair of Scarpa Inverno or Scarpa Omega boots for climbing. Do you know whether there is a binding system available to fit them to touring skis? If not, do you know of any other plastic boots that will fit this dual (climbing / skiing) purpose? I appreciate your help.

  8. Lou August 22nd, 2010 5:56 pm

    Angus, if the boot has a crampon welt (ledge), you can use the Silvretta 500 or find a used pair of Silvretta 404.

    http://www.wildsnow.com/1156/silvretta-500-in-the-museum-and-still-available/

    That said, why not look for a Dynafit TLT 4 boot or something like that, and use it for climbing, and use with Dynafit bindings?

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