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adjusting tyrolia sp120 demo bindings, boots floating when clicked in

post #1 of 6
Thread Starter 

hi all.  new to the forum.  let me preface with a few comments, i know binding adjustments are extremely important and should be done by a trained tech otherwise bad things might happen.  i'm usually on a tight budget when it comes to equipment.  buy used and hold onto for many years. 

 

just bought a used pair or volkl mantras mounted with tyrolia sp120 demo bindings.  don't laugh, my boots are rossignol r900 that are about 25 years old.  they have always served me well.  but now, they don't click in tight.  thinking my ancient boots are the issue, but just want to confirm.  i have the binding adjusted for the bsl and forward pressure seems to be correct per the tech manual.  my boot heel is floating a few mm above the heel cup of the binding.  thinking they should be tight. 

 

tech manual calls for a boot heel height of 31 mm, mine measures about 28 mm.  trying to determine if my ancient boots are the likely problem or if the bindings are the issue.

post #2 of 6

your boots are the problem. I mean, it's a demo binding, so you aren't getting the same 'locked in' feel that a high performance binding would provide due to the moving parts needed for adjustability... but it sounds like your heel lugs are toast.

post #3 of 6
Thread Starter 
Quote:
Originally Posted by Whiteroom View Post
 

your boots are the problem.


thanks for the fast response.  i think that is an easier fix than the bindings.

post #4 of 6
Thread Starter 
Quote:
Originally Posted by Whiteroom View Post
 

your boots are the problem. I mean, it's a demo binding, so you aren't getting the same 'locked in' feel that a high performance binding would provide due to the moving parts needed for adjustability... but it sounds like your heel lugs are toas

thanks again.  another question, with regard to the daylight between the heel cup and the lug, have heel lug heights increased over the years (this probably varies by manufacturer)?  or, could there be an adjustment on the bindings to compensate for varying heights?

 

the heel of these boots fit tight in rossignol binding i have on another pair of skis.  those skis and binding are about 10 years old.

 

just trying to understand the problem before i go to the shop.

post #5 of 6

No, the toe and heel shape of boots (called the DIN sole) is standardized. All ski boot manufacturers and all binding manufacturers are supposed to be working off the exact same dimensions. 

 

I read 25 year old boot and am picturing toe and heel wear that has taken the boot out of spec, but it might be worth having a technician take a look at your binding/ boot setting. Sometimes demo bindings need to be adjusted creatively to get the forward pressure set right. I would move the heel forward one notch and see if that changes the way the boot is sitting in the binding.

post #6 of 6
Thread Starter 
Quote:
Originally Posted by Whiteroom View Post
 

No, the toe and heel shape of boots (called the DIN sole) is standardized. All ski boot manufacturers and all binding manufacturers are supposed to be working off the exact same dimensions. 

 

I read 25 year old boot and am picturing toe and heel wear that has taken the boot out of spec, but it might be worth having a technician take a look at your binding/ boot setting. Sometimes demo bindings need to be adjusted creatively to get the forward pressure set right. I would move the heel forward one notch and see if that changes the way the boot is sitting in the binding.


thanks.  makes sense there are standardized specs for boot soles and bindings.  will have my local shop take a look this week.

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