Din correction factor - what causes the deviations?

[SumJongGuy]

IMO, it's not necessary. The spring will outlast the plastic (and the skis themselves) regardless.

But there is grease in there, so backing the DIN off for the summer does spread the grease around a bit, which is not a bad idea.

I've wondered what hot boxing the skis does to that grease inside the bindings..

[doebedoe]

I've wondered what hot boxing the skis does to that grease inside the bindings..

The only people who should be hot boxing their skis are racers. It's completely overkill for anyone else. And race skis have plates. You should be taking the bindings off.

[SumJongGuy]

The only people who should be hot boxing their skis are racers. It's completely overkill for anyone else. And race skis have plates. You should be taking the bindings off.

Most of the online photos I see of alpine ski hot boxing show the bindings still on. Clearly some people leave the bindings on. quite a few.



I had this discussion with racers on PugSki. Most seem to think the grease in bindings doesn't break down at 140-150 degrees. I find that hard to believe

[Ted Striker]

If that did happen, it's not hard to put more grease in there.

[jono]

...Pugski. Most seem to think the grease in bindings doesn't break down at 140-150 degrees. I find that hard to believe

Polimer chain breakdown or deformation? Loss of flavor? Fahrenheit, though, right?

[Spyderjon]

I've hot boxed hundreds of pairs of skis with the bindings on for four hours at 150F/65C with absolutely no ill affect on the binding grease, or anything else.

[XXX-er]

Is it true the primary use of the hotbox in most shops is for warming up leftover pizza?

i still love spring break plus hotboxxed with skis on!

I think you can leave the bindings on but you don't wana wear your skis in the hot box

[Spyderjon]

Is it true the primary use of the hotbox in most shops is for warming up leftover pizza?......

There's never any pizza left over in my shop.

[XXX-er]

how about warming chicken Tika Masala, the most popular takaway in england, you know ... because brits can't cook

[jono]

I've hot boxed hundreds of pairs of skis with the bindings on for four hours at 150F/65C with absolutely no ill affect on the binding grease, or anything else.

Kooky talk, Shirley. You using space age synthetics?

[Spyderjon]

Kooky talk, Shirley. You using space age synthetics?

You don't know what you don't know

[SumJongGuy]

If that did happen, it's not hard to put more grease in there.

Only as hard as disassembling the binding, removing the spring, slathering lithium grease all around it and putting it back together.. X4..

[SumJongGuy]

I think you can leave the bindings on but you don't wana wear your skis in the hot box

Home Sauna Thread Jong!

[skizix]

A properly engineered coil spring (for any application) should really not suffer any metal fatigue (with the possible exception of corrosion-induced fatigue, or forces outside design parameters, etc).

As alluded to earlier: I would suspect every single other moving part on the binding, before assuming it's the springs.

[old goat]

Wouldn't boot wear, lubrication break down, road grime etc all cause bindings to test high. The OP's toes are testing 2 numbers low.
I don't know this binding (I realize not knowing Pivots is grounds for being banned)--is toe height adjustable? Although I assume any shop testing bindings would make sure that's correct and I wouldn't expect loose toe height to cause that far out of spec.

When faced with a test result you can't explain, consider retesting (at a different shop).

[pureantigravity]

Wouldn't boot wear, lubrication break down, road grime etc all cause bindings to test high. The OP's toes are testing 2 numbers low.
I don't know this binding (I realize not knowing Pivots is grounds for being banned)--is toe height adjustable? Although I assume any shop testing bindings would make sure that's correct and I wouldn't expect loose toe height to cause that far out of spec.

When faced with a test result you can't explain, consider retesting (at a different shop).

We think alike. Something seems awry.

[Ted Striker]

I don't know this binding (I realize not knowing Pivots is grounds for being banned)--is toe height adjustable? Although I assume any shop testing bindings would make sure that's correct and I wouldn't expect loose toe height to cause that far out of spec.

When faced with a test result you can't explain, consider retesting (at a different shop).

No toe height adjustment on those things.

A symptom of insufficient forward pressure is pre-release.

[scottishrider]

Not clear but did the OP have these tested when new? Could have been 2 out the whole time rather than something going off?

[pureantigravity]

Not clear but did the OP have these tested when new? Could have been 2 out the whole time rather than something going off?

No. They are second hand mogul skis. The shop also checked for forward boot pressure. So I guess it is what it is.

[stuckathuntermtn]

Are they off all over the place or off the same every time? Because that is a big difference.

[pureantigravity]

Are they off all over the place or off the same every time? Because that is a big difference.

Every time.

update: Picked up a better set of used mogul skis and had new Look 14 bindings installed. The toes test +0.5 DIN and the heels test -0.5 DIN.
All I can guess is that the deviation from the previous set to this set is related to boot sole wear and binding wear. The boots are a little worn (walking wear) and don't sit 100% flat anymore. I suppose that is why the toes need adjusting upwards. Heels? I have no idea. The tester tested them, adjusted them, cycled them several times and says that the answer is "All bindings test on/off spec and there is no single factor why. Even new boots with new bindings often test +/- to rated DIN by more than 1 DIN. "
It just freaked me out because I don't want toes that never release! I will sleep better now knowing that the shop guy cycled them, adjusted forward pressure and retested them.
Now I just need to learn to ski moguls! :P

[stuckathuntermtn]

A tech should be able to give your a equipment the occular pat down and pass or fail it.
The fact that it doesn't sit flat doesn't sound good, but the fact that the bindings show the same release value every time is good. That can be easily corrected for. It seems there is quite a bit of tolerance in the system as a whole and that means wear and tear, ranges of forward pressure, and (hopefully slight) variations in actual release values. Nevermind the effects of ski flex and centrifugal force, torque, impacts, etc.
Unfortunately, no one has figured out a safer way.