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Marker iPT Fore/Aft Adjustment

post #1 of 14
Thread Starter 

   I started this thread on the "Tuning" board but did not get a response, so...

   I have the Marker Motion iPT w/ Piston integrated binding on my Volkl AC30 skis. I've adjusted the DIN and forward pressure, (yes, I know how), then went skiing in Utah last week. I want to move the binding 1 or 2 cm forward on the rail, then readjust the DIN/forward pressure.

   I see that the lock screw has a lock/unlock symbol, but when I unlocked it, the binding did not move forward. Is there an easy way to do this? Also, do the AC30's have a mark on the ski that lines up with the center mark on the boot?

post #2 of 14

trying to help but can't get pics to work.

 

where's the user control panel???


Edited by skier357 - Fri, 06 Feb 09 00:05:18 GMT


Edited by skier357 - Fri, 06 Feb 09 00:06:32 GMT
post #3 of 14

The Binding will not slide forward, only up to a notch that's in the track... there's a pin that lowers into this notch when you turn the locking screw.

 

 

The only way to move the binding is to take it off the ski... turn the screw to the unlock position and slide the binding back towards the tail of the ski. Flip it over and separate the toe from the heel piece stem... adjust the stem for one or two larger boot sizes and snap it back together... slide the binding back into the track, lock it down, move the heel piece and set the forward pressure.


Edited by skier357 - Fri, 06 Feb 09 00:20:31 GMT
post #4 of 14
Thread Starter 

When I check it out, if, as I assume, the boot length is set correctly at 315, (my boot is 318), than can I set the binding more forward on the ski and still use the 315 setting?

post #5 of 14

I am also interested in this.

 

I am pretty sure I know how to remove the toepiece (just those 2 screws), but I cant seem to be able to take out the heelpiece of the binding ??

post #6 of 14
Quote:
Originally Posted by mmpotash View Post

When I check it out, if, as I assume, the boot length is set correctly at 315, (my boot is 318), than can I set the binding more forward on the ski and still use the 315 setting?

 

No.

 

You can't move the binding forward on the motion rails there is only one spot for the binding to 'lock on' (I suppose you could dremel out a new spot... but that could fail catastrophically). What is being suggested is to set the binding to a bigger boot sole length (this moves the toe forward on the ski) then to re-adjust the heel forward to close the gap. Try 325mm, this should allow the heel to move far enough and will move you forward 1/2 a cm.

 

MAKE SURE the forward pressure is correct for the new setting !!!

post #7 of 14
Thread Starter 

I found out from a tech guy that I should be be able to change it from 315, (my boots are 318), to 335 without a problem IF, I can adjust the forward pressure to the correct place, (flush).

 

I'll try it tonight.

post #8 of 14
Thread Starter 

I tried last night but I could not loosen the screw that holds the piston, (the most forward screw). I have a better screwdriver but before trying again I realized I wasn't sure if I could use the same hole for the piston screw, or if I needed to drill a new one.

post #9 of 14
Thread Starter 

OK, I needed a Pozi type screwdriver, which I had, and I verified that I use the same hole for the piston after I change the binding.  So I removed the screw holding the piston, turned the lock to unlock... but still could not slide the binding back???  Do I need to remove any other screws???

What am I missing!!!


Edited by mmpotash - 2/11/2009 at 03:59 am
post #10 of 14
Thread Starter 

With the phone help of the tech guy that sold the skis, I completed the adjustment.

I needed to tap the toepiece with a rubber mallet for it to move. After I slid it off the ski I put a flathead screwdriver under the end of the black bar with the slots and lifted it up. If you look closely you'll see 2 small black tabs that held the bar in the slot, (on the picture above they are between the 325 and 335 mark). Make sure when you put the bar back that the tabs close. Slide the binding back on the skis track, if necessary tapping it with the mallet, and lock it. When replacing the piston screw, use Elmers glue to seal it from moisture. Reset the forward pressure. That's it. I moved it from the 315 mark to the 335 mark, which will give me a 1 cm change.

post #11 of 14

nicely done... I'm glad it worked out for you.

post #12 of 14
Thread Starter 

I skied Whistler for 5 days last week.  The change in binding position did make a difference. Initiating turns, particularly in bumps, was quicker.  On the other hand it was slightly less stable at high speed on the groomers.  Altogether, I liked it!

post #13 of 14

This thread was a great help for me adjusting to a new boot size.  Thank you to everyone above who provided input.

 

 

post #14 of 14

Ditto. Thanks to all. For some irrational reason, Marker thinks that restricting information makes us all safer... see www.epicski.com/forum/thread/76040/forward-pressure-adjustment-marker-12-0-ipt and www.epicski.com/forum/thread/79107/installing-marker-ipt-wideride-bindings-on-volkl-ac50-s-question for additional discussion of setting forward pressure

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