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Binding adjustments

post #1 of 6
Thread Starter 
Posted this first in Tuning and Maintenance, but no joy...

If the final answer is "Take it to the shop and don't mess with it!", I've got no problem with that - just some questions for my general knowledge and future reference.

Recently acquired Volkl AC3 w/ Marker Motion AT w/ PCOS... then immediately switched from 323mm to 317 boot length (Lange CRL 90).

Questions: 1) Will there be any issues with aligning boot center to ski center, since the adjustment dial moves the toe only?
2) Will the PCOS require a separate adjustment?
3) Where is boot center, anyway? I have matching, straight line tick marks on inside and outside - plus an arrow mark slightly forward of that, on the outside only.
4) Moving the adjustment dial by 2 of its 6 points puts the scale over 317, between dot and line, like it was over 323 before I started playing with it. Is that it, or do I need to head to the shop?

Thanks!
post #2 of 6
When we've changed the boot settings on our Marker/Volkl Motion system bindings, we've just dialed in the number closest to the boot size then adjusted the rear with a phillips screw driver.
For instance....my boot is 308, so we dial in 310, then turn the bottom screw two clicks clockwise.

This may not be the correct answer but it's the only one I have. We've skied this type of binding for some time. My husband and I share skis all the time and never seem to have any troubles with them.

Now I'll wait for the really smart people to tell me how wrong I am.
post #3 of 6
I just got new AC4s today and am playing around with the bindings to figure them out. Adjusting the AT bindings for boot size moves the toe and heel equally. The PCOS should be fine since where that unit fits into the binding it remains stationary. Like Trek though - I am no binding expert!
post #4 of 6
Thread Starter 
OK, I was looking at the wrong component of the heel (forest/trees type thing, I guess). Finally saw it moving in concert with the toe!

As for the PCOS, the unit is stationary, yes; but I'm wondering whether the tension of the mechanism is altered when boot length is altered, and therefore needs to be compensated in some way?
post #5 of 6
Quote:
Originally Posted by gyro
. . . . but I'm wondering whether the tension of the mechanism is altered when boot length is altered, and therefore needs to be compensated in some way?
The calculation of your DIN setting involves factoring in the boot sole length under one method. I don't think the setting is so precise, however. You can't tell me that you know the setting is at 8.25 just by looking at the line on the binding window. That's why they do the torque test.
post #6 of 6
Gyro, I am a total newbie with this but there does not seem to be any way to adjust the piston. It is screwed in towards the tip and set in place under the binding.
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