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June, 2025

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1mm Change in Boot sole Length, Need to Modify FKS Bindings at All?

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rickmorty
Posts: 29 - Karma: 34
So I finally decided to upgrade to upgrade from my old Kryptons. They changed the designed so the boot has an extra millimetre so a 28.5 BSL is 327mm instead of 326mm, the toe height difference is exactly the same. So does 1mm make any difference? I've got FKS so adjustability is kinda a bitch
10 years ago
5 2
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Black.Bird
Posts: 2566 - Karma: 684
You'll have to adjust your bindings. You can adjust FKS bindings a little.
There are two stems on each side of the heel piece that you can adjust to create more room for your boot. Make sure the white tab is flush with the two dashes, by making incremental adjustments to both stems equally.
I did the same thing when I got some new boots earlier this season.
10 years ago
0 0
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NinetyFour
Posts: 8650 - Karma: 13,410
Yeah I would definitely check the forward pressure and re-adjust as necessary. Here's a solid guide on how to do it:

http://theskimonster.com/blog/posts/how-to-adjust-your-rossignol-ski-bindings/
10 years ago
0 0
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shin-bang
Posts: 4106 - Karma: 7,038
Black.BirdYou'll have to adjust your bindings. You can adjust FKS bindings a little.
There are two stems on each side of the heel piece that you can adjust to create more room for your boot. Make sure the white tab is flush with the two dashes, by making incremental adjustments to both stems equally.
I did the same thing when I got some new boots earlier this season.


do not use the white tab as an indicator. this is a very common misconception that can cause people to pre release. so many people make this mistake. but he his right when turning the stems, turn them incrementally. dont crank one side and then go back and crank the otherside. do like 1 turn on the left and then a turn on the right. note. 1 turn will most likely be too much for a 1mm change.
10 years ago
1 0
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NinetyFour
Posts: 8650 - Karma: 13,410
shin-bangdo not use the white tab as an indicator. this is a very common misconception that can cause people to pre release. so many people make this mistake. but he his right when turning the stems, turn them incrementally. dont crank one side and then go back and crank the otherside. do like 1 turn on the left and then a turn on the right. note. 1 turn will most likely be too much for a 1mm change.


How is it a misconception? The white tab and raised dashes' specific functio, purposely built in by Look/Rossi is to indicate forward pressure. I've rode 4 different sets of skis this year, loads of days, all adjusted so that the end of the white tab is centered with the raised dashes and haven't had any weird pre-releases.

And if you didn't use it, how do you set the forward pressure? Really, the only way to do it like that would be guess and check which probably isn't a solid idea. At the least use it to get a ballpark on your forward pressure...
10 years ago
1 1
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Muggydude
Posts: 701 - Karma: 383
The white tab DOES NOT indicate correct forward pressure. It's a poor design, and is not what you want to go off of. Well known fact. Now, depending on the boots and how the bindings were mounted lengthwise relative to that the indicator may actually work correctly for some boots- but not often. Hence don't go off the tab.

The only reliable way to set them is have a shop do it and then have them do release tests. Or if you're familiar with the bindings and what they feel like with proper forward pressure you can do it yourself by "feel" and how much movement is possible/how hard the heel is to rotate while clicked in.
10 years ago
0 0
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Jaggy_Snake
Posts: 2287 - Karma: 1,418
shin-bangdo not use the white tab as an indicator. this is a very common misconception that can cause people to pre release. so many people make this mistake. but he his right when turning the stems, turn them incrementally. dont crank one side and then go back and crank the otherside. do like 1 turn on the left and then a turn on the right. note. 1 turn will most likely be too much for a 1mm change.

This.


The indicator for the forward pressure is terrible. On mine the tab is 3/4mm behind the indicator and the forward pressure is as correct as it could be.

OP: If you are unsure about adjusting them yourself I would recommend to take them to a certified tech to adjust them for you, just to be on the safe side.
10 years ago
0 0
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goonsquad
Posts: 550 - Karma: 224
shin-bangdo not use the white tab as an indicator. this is a very common misconception that can cause people to pre release. so many people make this mistake. but he his right when turning the stems, turn them incrementally. dont crank one side and then go back and crank the otherside. do like 1 turn on the left and then a turn on the right. note. 1 turn will most likely be too much for a 1mm change.


the indicator isnt the white tab its the groves cut in on both the screws they have to be flush with the edge of the metal casing. It will seriously be like a quarter turn for a mm and you may not even have to touch it check the forward pressure before you mess with it
10 years ago
0 1
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NinetyFour
Posts: 8650 - Karma: 13,410
Jaggy_SnakeThis.


The indicator for the forward pressure is terrible. On mine the tab is 3/4mm behind the indicator and the forward pressure is as correct as it could be.

OP: If you are unsure about adjusting them yourself I would recommend to take them to a certified tech to adjust them for you, just to be on the safe side.


0.75mm is nothing. Like I said, at least use it as a ballpark, if the white tab is several MM away from center and the angle of the dildo looks wack, then your shit is probably not correct and you're going to get messed up.
10 years ago
0 0
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shin-bang
Posts: 4106 - Karma: 7,038
NinetyFourHow is it a misconception? The white tab and raised dashes' specific functio, purposely built in by Look/Rossi is to indicate forward pressure. I've rode 4 different sets of skis this year, loads of days, all adjusted so that the end of the white tab is centered with the raised dashes and haven't had any weird pre-releases.

And if you didn't use it, how do you set the forward pressure? Really, the only way to do it like that would be guess and check which probably isn't a solid idea. At the least use it to get a ballpark on your forward pressure...


Yea if you're doing it yourself use the
Tab to get a general idea. But for op it's a 1mm difference so the tab is already in the ball Park. Every time my shop Sets mine, the tab is over the mark, indicating they're to tight but in reality they work great and pass the release tests. And yes I've talked to a ton of people and setting them is more a black art, rather than just looking at the indicator, which is very in accurate. Op, so if you love your acls just take them to a shop.
10 years ago
0 0
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rozboon
Posts: 1642 - Karma: 868
1mm is maybe 1 click on the heel adjusters. I have a friend with a 306 boot, I'm on a 307, we both have FKS and swap skis fairly often, no issues with release.

And +1 to the white tab being rubbish, maybe in an ideal world it works but it only seems to be accurate with like a brand new boot.
10 years ago
1 0
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Blake.P
Posts: 9894 - Karma: 3,590
based on the discussion above, just take them to a shop...
10 years ago
0 0
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supersquid
Posts: 1430 - Karma: 2,552
since they had to be mounted perfectly the forward pressure is probably perfect so 1mm will make them a little bit tighter but not crazy. I would probably just keep riding them they are most likely fine but i would recommend having your shop look at them as they are professionals and i just set rental skis for people. park skis need to be more exact
10 years ago
0 0
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