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Wax the boot glide zone interface with AFD?

post #1 of 5
Thread Starter 
I just picked up rental skis and boots for my two sons for this season.  I noticed that the flat area on the boot toe pieces that mates up with the binding AFD (I think this is called the glide zone) is quite scuffed up on their rental boots.  Also the AFD teflon strips on the toe bindings have a few grains of sand embedded in them.

I want to make sure the toe bindings re-center during hard skiing, and also release properly in a forward weighted fall, so I'm wondering if the scuffed surfaces will cause much increase in friction.  Is there a good way to smooth out the scuffed up surface of the glide zone on the boots (short of replacing the toe pieces)?

Would it help to apply some kind of wax to the glide zone on the toe pieces?

I did my best to remove the embedded sand particles from the teflon strips, since I know a few of those can dramatically increase the release force needed in a forward weighted fall.  I want to keep my kids ACL's in one piece.
post #2 of 5
For a season rental the shop should have done a function test with the boots and the binding. Ask to see the paperwork.
post #3 of 5
Thread Starter 
Quote:
Originally Posted by JDoyal View Post

For a season rental the shop should have done a function test with the boots and the binding. Ask to see the paperwork.

They did do a release test and a box is checked saying it passed.  But I doubt the test simulates actual on hill forces very well.

Don't those tests just apply rotational torque to verify that the springs release at the set DIN value?  A test like that wouldn't apply any significant downward force on the AFD pad, so wouldn't detect much difference between a slippery AFD and one made of sandpaper.

If the friction at the AFD is high, the binding will pre-release when you don't want (due to slow re-centering), and not release when you do want (due to grabbing the boot in a forward twisting fall).  So that's why I want to minimize the friction.

I see in another thread sometimes silicone spray can be applied to the AFD, but I think that would attract dirt and would probably wear off rather quickly.  Seems like a little wax on the boot glide zone would be better to fill in the scuffed plastic.
post #4 of 5
The only test is the one they did. Wax will wear off just as fast as pretty much anything else. I really doubt your going to see much of a difference in any case, if that were the case the lawyers would have a field day with the way bindings are checked.
post #5 of 5
Your point is well taken and you are correct that the binding function test does not apply a vetical load to the toe.  Therefore, frictional effects of rough AFDs and boot soles are not indicative of actual field conditions.  However, it is the only test that exists.  We have no method of quantifying the changes.

Why not purchase new AFDs.  Certainly they are not expensive compared to your peace of mind.  It may be possible to have the boot soles smoothed on a jointer without removing enough material to have the boot sole under DIN standard thickness.

Lou
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