Measuring true center?

M

mountainviper

Active member
So maybe the answers to this thread could maybe be stickied or added to the maintenance thread but I've been unable to find this info elsewhere on ns.......essentially measuring true center on a symmetrical ski is a no brainer but what about a rockered ski?....or a rockered ski that is asymmetrical?....I'm curious as to if I'm doing it right by measuring off of actual running surface....can anyone provide a legit explanation?
 
on the sidewall there should be a marking as to where the skis midsole is located. not always necessarily true center but the most useful piece of info when mounting skis. if you really want to get a true center then just break out a tape measure.
 
Yeah dude midsole isn't always true center and yes a tape measure works great and is super easy on a true symmetrical ski...I'm talking about an asymmetric rockered ski.....anyone who works at a shop or is a rep and knows how to do this please jump in here...thanks.
 
true center is the exact center of the total length of ski, doesn't matter whether it's symmetrical or not. just break out the tape measure.
 
there is true center and then there is core center

true center(or dead center) is the direct middle of the ski

core center where the core is the thickest
 
All of our skis have rocker, and believe me, we've stressed over mount point.

First, there are a few ways of measuring to find a good place to mark skis. I'm not a veteran at all, but heres my quick and dirty:

- Measuring tip to tip, measuring tape on the base of the ski (flat length)

- Measuring straight across tip to tip, or whats commonly referred to as true center. (Yes, since the tips are raised, you do sorta make the tape into a slight triangle when you measure down to the near center of the ski, but your mark will be a fraction of a mm off at most)

- Measuring the running length.

- Measuring to find the narrowest point of the ski, or the apex of the sidecut.

For finding a good mount on skis nowadays via the old tried and true methods... man, hard question. Rocker changes characteristics of the skis so much that I'd almost go off what the manufacturer suggests, making appropriate changes for the type of skier versus the type of ski - for example, if someones a very thoroughbred BC skier that drives the ski at all times, I'd even suggest that person to go back from our mark on something jibby like the Caylor, probably 2-3cm. With so many crazy rocker styles and shapes, I dont think I could give you a better generic rule that would apply to everything out there right now.

But do double check. Topsheets can slide in the press, errors can be made (not that we do), and its always a good idea to check the recommended mark against something. Straight tip to tip is easy and pretty foolproof (watch, now that I've said that someones going to mess it up), if there was a standard set for measured mounting positions, I would hope it would be based off this measure of "true" center.

 
Heres another way of thinking about it I guess.

If I put "Mount at Center" on my ski ticket:

- I would be happy if the midsole mark on my boot was exactly in line with the measured straight from tip to tip location on the ski.

- I would be unhappy with anything else.
 
Thanks....that was a decent amount of effort and it is appreciated....that should be stickied.....I've always done the tip to tail measure but now you have skis with asymmetrical rises and funky sidecuts....wasn't sure if there was something to measuring actual running surface or not.
 
Flat length is important for the stuff we design and do, but for the consumer, I think you'd be safe with straight across from tip to tail.
 
Ginko what company do ya rep?...I always remember the people who put forth some help to your regular guy when I'm making purchasing decisions.
 
Comforting to know that humanity is always aspiring to find a new way of cocking something up.

And I'm one of the owners of ON3P, apologies for nerding out on stuff like this, but its what gets me going.
 
Haha....nah I def appreciate it....actually wish you'd nerd way the eff out and start breakin down the complex mathematics....haha....cause I know there's somethin to the whole running length, sidecut, rise, taper thing....it's probably some secret equation that only company owners can know, like the masons huh?....lmao....
I think I remember seeing that you were a part of on3p....didn't want to assume and offend if it was another company though....I've heard nothin but good things about the skis but I've not had the pleasure to ride them yet....think I have heard you say a few things on the forums here about doing some cool things for people that other companies wouldn't do...I vaguely remember something about a custom topsheet....that's stellar and says alot about your company....it's also impressive that your in here giving out help and advice on a regular basis.....that definitely will make a difference in people's purchasing decisions.....I promise that the first on3p demo I see this season I'll make it a point to jump on a set and see how they ride...... And thanks again for the effort...people like you are the reason why I love skiing and it's community.
 
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