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Will a foot bed change boot/foot geometry (ie: ramp angle)?

post #1 of 8
Thread Starter 
Friends, a couple weeks ago I posted re: the considerable quad burn I was getting in my new Doberman 130 Pro's. I was coming from a pair of Dal Krypton Pro's last year, which gave me no issues. 
Stance is obviously an issue when quad burn happens. I was fortunate enough to train with Rick Schnellman this summer. And as he posted to my earlier thread, he checked the video and did not detect any stance issue (in the Kryptons) that would explain this.
So I am left with the different boot as the likely issue - but also the Aline footbed I got with these boots. I played around a lot today with both pair of boots. I use the same liner in each (Doberman leather lace up). Did the "squat test" and did not notice a great deal of difference between them. The lower I got, the more I was on my heels to balance. Was very little weight on  the toes. Not sure what that means in terms of forward/aft balance or where shims would go to fix that. Did put some duct tape shims under the toes and then heels, but did not have a "breakthrough" impression when shimming either toe or heel.

So it occurred to me that the other variable from last year is the Aline footbeds that I got this year. I did have them "fitted" by a boot guy who did the whole balance thing. I ended up with a shim on the outside edge of each heel. Have to say, the edge control has been terrific. And for the first time, I have been able to turn equally strong in both directions. Skis track dead on (one-footed). And my wife says that have lost the "A frame" that was a problem this summer when I was training. So the re-alignment has definitely been a good thing.
But I wondered how much the ramp angle of the boot might be affected by these footbeds. So I pulled one out and left the other in. I felt more upright in the "without" boot and more forward in the "with" boot. I took a closer look. I do not have calipers, but it looks as if the footbed arch/heel area is about 1/2" thicker than the front. This, I assume puts the heel higher than the toes. Naturally, I am just eye-balling all of this. But was wondering from those who make footbeds whether this is a consideration. And whether a higher heel effectively raises the ramp angle or does anything else that might explain my quad issue. I will pull them out next time I go skiing to test the theory - but I like what they do for my skiing so I do not want to give up on them.
Much obliged,
David

PS: Since posting I measured the forward lean of the Dobies vs. Kryptons. The Dobies are forward about 3/16" - not sure if this is enough to be significant. 
And I was also wondering if softening the boot (by taking one of the bolts out) would allow me to stand taller between turns and unload the quads, if that is the culprit. We often hear about softening the boot to make the flex easier. But what about making it softer to make the extension (standing taller) easier. Or is that more of a cuff realignment issue?


Edited by deliberate1 - 1/10/10 at 1:28pm
post #2 of 8
Well if you are correct about the half inch I would say you've found the problem.  That said I have never, never seen a footbed that even came close to being 1/2" thick.  Before we comment I think you should try and get accurate measurements.  The height of the footbeds on the sides is not an issue.  Only the thickness in the centre of the heel area is of importance when talking about heel height.

Lou
post #3 of 8
Thread Starter 
Lou,
Thanks for yours. I have sent an email to Aline to see if I can get the definitive answer.
Failing that I will see if I can put my hands on a pair of calipers to get the scientific answer.
But my seat-of-the-pants impression is that these beds put you distinctly forward. I have taken them out of the liners and put them on a tile floor. Several times on and off them. The clear sensation is that the heels are discernibly elevated relative to the forefoot. 
And then I put one bed in a boot shell directly on the foot board. The other boot went without. Distinct feeling that the heel was lifted in the "bed boot."
When you make beds are they neutral on a horizontal plain, so that the heel and forefoot are "level"?
Thanks for your time,
David
post #4 of 8
     Push a needle up through the center bottom of the footbed heel till it just becomes visible inside the center of the heel cup---mark the needle shaft on the under side with a sharpy--- pull the needle out then measure the amount of needle that went up through the footbed---no harm done.  Raising your heels will move load toward the forefoot.  Are your footbeds made of dark blue and bright yellow material?
     So far as the title of your post---a footbed will align your foot in a more subtalor neutral position which usually helps with tracking and alignment issues.
post #5 of 8
Thread Starter 
I had the same thought - easy than a micrometer. Will do the test and report back. The Alines I have are a clear material trimmed with red. And the heel wedge is black.
post #6 of 8
Thread Starter 
Lou, I tried pushing the needle through it but no way. It is a hard plastic that is impervious to a mere needle. Anyway, I will go back to the fitter that sold the Alines to me and we can work this out.
Appreciate your interest.
David
post #7 of 8
Thread Starter 
Quad pain problem solved by an Insta Print shim and sucked up the space between chicken shins and tongue, and by 3mm toe shim. Amazing how just a little bad geometry can cause big issues.
post #8 of 8
Congratulations.  To one of your questions.  We use Conformable footbeds which are ramp angle neutral as you describe it.  Others are also..

Lou
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