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Changing forward pressure due to temperature.

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cultrara
Posts: 5147 - Karma: 46,849
While skiing the other day, I noticed that my boot was loose in the binding; I could wiggle my foot and the ski would rattle around.

I adjusted the forward pressure of the binding which solved the problem.

In my room today, I tried to put my boot into the binding and it wouldn't fit because the binding was too tight.

I think that the plastic of my boot expanded slightly because of the temperature increase. When I was skiing the temp was 5° F and in my room the temp is 70° F.

I also had problems with my bindings being too tight while I was at Mt Hood this summer, which is obviously warmer skiing than in mid January.

Has anyone ever experienced this problem?
Jan 24 2016 1:59PM
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japanada
Posts: 13785 - Karma: 1,956
I have never experienced that in the 14 years I have been skiing and Ive skied from -40 with windchill up to 80 and sunny. What kind of bindings were you using?
Jan 24 2016 2:20PM
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cultrara
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japanadaI have never experienced that in the 14 years I have been skiing and Ive skied from -40 with windchill up to 80 and sunny. What kind of bindings were you using?


The bindings are Axial 2s
Jan 24 2016 2:48PM
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japanada
Posts: 13785 - Karma: 1,956
cultraraThe bindings are Axial 2s


Hmm I know of bindings developing slop to the point they would move a notch or two forward or back on the track. Maybe it's time for a new set of bindings?
Jan 24 2016 7:53PM
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Caucasian_Asian
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Maybe you had snow built up on your boots
Jan 24 2016 8:46PM
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KravtZ
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I have axial 2's I have used on warm summer days on the Whistler Glacier to -40+ mid EC winter...never had an issue.

Must be a problem with your binding. Temp shouldn't affect fit at all.
Jan 25 2016 9:59AM
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cultrara
Posts: 5147 - Karma: 46,849
KravtZI have axial 2's I have used on warm summer days on the Whistler Glacier to -40+ mid EC winter...never had an issue.

Must be a problem with your binding. Temp shouldn't affect fit at all.


I don't think its an issue with my binding, I think its the plastic of my boot expanding and contracting
Jan 25 2016 10:16AM
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Caucasian_Asian
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cultraraI don't think its an issue with my binding, I think its the plastic of my boot expanding and contracting


Its not going to expand/contract enough to noticeably change your forward pressure.
Jan 25 2016 11:10AM
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cultrara
Posts: 5147 - Karma: 46,849
Caucasian_AsianIts not going to expand/contract enough to noticeably change your forward pressure.


That seems more plausible than my forward pressure somehow tightening itself.
Jan 25 2016 11:13AM
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russsavokskis
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japanadaskied from -40 with windchill


Was that bad?
Jan 26 2016 2:35AM
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marrows
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Were you wearing the boots when you tried to put them into the binding in your room?
Jan 26 2016 7:23AM
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japanada
Posts: 13785 - Karma: 1,956
russsavokskisWas that bad?


Not really, while skiing youre giving off so much heat, and properly layered. The lifts were a different story.
Jan 26 2016 9:01AM
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cultrara
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marrowsWere you wearing the boots when you tried to put them into the binding in your room?


No
Jan 26 2016 11:21AM
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s-hand
Posts: 1334 - Karma: 1,800
I have always wondered about this. I think it is a legitimate thing, but im not an expert. Threads for when someone who knows what theyre talking about has an answer.
Jan 26 2016 7:01PM
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japanada
Posts: 13785 - Karma: 1,956
s-handI have always wondered about this. I think it is a legitimate thing, but im not an expert. Threads for when someone who knows what theyre talking about has an answer.


For as tight of standards boot and binding manufactures have to go through for compatibility and legality, there is no way I could see them knowingly releasing a product that changes sizes. Thats just asking for a lawsuit!

Also with the amount of people on Axials, this problem would have been noticed and addressed in the 10 years of that model being on market.

Do you always kick the snow off the boot by using the heel piece as a scraper?
Jan 26 2016 7:30PM
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cultrara
Posts: 5147 - Karma: 46,849
japanadaFor as tight of standards boot and binding manufactures have to go through for compatibility and legality, there is no way I could see them knowingly releasing a product that changes sizes. Thats just asking for a lawsuit!

Also with the amount of people on Axials, this problem would have been noticed and addressed in the 10 years of that model being on market.

Do you always kick the snow off the boot by using the heel piece as a scraper?


This isn't a problem with the binding. The binding is 100% fine.

Its the plastic of my boot that is potentially expanding.
Jan 27 2016 1:41AM
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RudyGarmisch
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Replicate this shit, go find a walk in freezer and film it.
Jan 27 2016 1:45AM
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japanada
Posts: 13785 - Karma: 1,956
cultraraThis isn't a problem with the binding. The binding is 100% fine.

Its the plastic of my boot that is potentially expanding.


Both bindings AND boots have to pass ISO din standards bud
Jan 27 2016 11:00AM
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cultrara
Posts: 5147 - Karma: 46,849
japanadaBoth bindings AND boots have to pass ISO din standards bud


I understand that. However, it doesn't rule out that the problem is with my boot.
Jan 27 2016 11:39AM
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KneeDrop
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How old are your boots? I'm wondering if they'd pass inspection in a shop
Jan 27 2016 12:13PM
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.boz
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KneeDropHow old are your boots? I'm wondering if they'd pass inspection in a shop


Could be this, maybe toe or heel strikes are worn out..? Just seems unlikely that will all the industry wide safety standards your boots are made with plastic that contracts enough to fuck your forward pressure in a single day....also Ive worked in a shop for a couple years and never once had someone bring boots to my attention with this problem
Jan 27 2016 1:12PM
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KneeDrop
Posts: 641 - Karma: 1,487
Ya, never heard of this..
I'd be very interested in doing some tests with the equipment.
I may just do some with some older boots and axials we have in the shop
Jan 27 2016 1:26PM
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cultrara
Posts: 5147 - Karma: 46,849
RudyGarmischReplicate this shit, go find a walk in freezer and film it.


Rowen I think I'll have to do that. I'll measure my BSL at room temperature and again at temps bellow freezing.

KneeDropHow old are your boots? I'm wondering if they'd pass inspection in a shop


.bozCould be this, maybe toe or heel strikes are worn out..? Just seems unlikely that will all the industry wide safety standards your boots are made with plastic that contracts enough to fuck your forward pressure in a single day....also Ive worked in a shop for a couple years and never once had someone bring boots to my attention with this problem



My toe and heel lugs are worn, so it could be related to that.

The reason I think its because of temperature is because each hot day I've skied I had to loosen the pressure and each cold day I had to tighten it.

If its a problem with worn heel and toe lugs, one would think that the adjustments would be random and not associated with the temp.
Jan 27 2016 2:29PM
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.Hugo.
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cultraraNo


Its considerably harder to snap your boot in by hand rather than while its on your foot
Jan 27 2016 3:06PM
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japanada
Posts: 13785 - Karma: 1,956
cultraraIf its a problem with worn heel and toe lugs, one would think that the adjustments would be random and not associated with the temp.



My guess would be, and no offense here, is that you dont know what youre doing when adjusting you binding. Axials are easy to set in between notches on the heel piece and then depending on your step in procedure, easy to knock forward or back.

Stupid question, youre not on demo axials?

What boots?

plastics in boots have only been getting more advanced since the 60s, no way this magical shrinking and expanding boot would just be isolated to you.
Jan 28 2016 3:11PM
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cultrara
Posts: 5147 - Karma: 46,849
japanadaMy guess would be, and no offense here, is that you dont know what youre doing when adjusting you binding. Axials are easy to set in between notches on the heel piece and then depending on your step in procedure, easy to knock forward or back.

Stupid question, youre not on demo axials?

What boots?

plastics in boots have only been getting more advanced since the 60s, no way this magical shrinking and expanding boot would just be isolated to you.


No offense taken. Its totally possible that I'm knocking the heel piece out between notches when I'm stepping in.

When I had my forward pressure adjusted, it was done by a shop tech at Sugarbush when I noticed the problem.

The bindings aren't demos. The boots are Head Adapt Edge 90s from 2013

Jan 28 2016 5:42PM
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