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Edge angles for K2 Public Enemy Twins?

post #1 of 10
Thread Starter 
 I have a pair of K2 Public Enemy Twins, 163s. Does anyone have any knowledge what edge angles, base and side I should use for these bad boys? They have only been waxed, never sharpened. I'm a ski racer myself, pretty much fluent in Tuning skis. They aren't center mounted, they are at -7. I use them mainly for free skiing, occasionally park, and powder, i barely do rails.
post #2 of 10
i've found it impossible to hand-tune the PE's specifically because the side walls are made of rubber,  which my sidewall planer isn't able to cut through.  Without being able to remove the sidewall, any edge work is impossible.
post #3 of 10
I tuned mine for the first time Monday.  I guess I don't see what you guys are fussing about.  I filed mine flat with a medium large file, then just ran my smallest file along the sides, flush and square by hand

But, they only had about 8 hours of actual skiing on them so this was really just a touch up
I did see an itty bitty lip of rubber/plastic where the sidewall meets the edge.  I just held the file against that parallel with the edge using little lateral side to side strokes along each side tip to tail.  Then I went over it with a stone.  When it is time for a major tune, my plan is to just run a large file across that and carefully take it down flush with the edge when the sides really need some attention.  Then I'll tune them just like the other twenty skis I've tunes myself with advice and guidance from others, reps, ski techs, etc,,  over the past thirty years.  Mine PEs are probably different than yours though because they are the 05/06 model with the 80 mm waist. 

Regardless, taking down a bit of sidewall is sometimes what has to happen if you want an edge beveled beyond 90 degrees or what is flush with the sidewall when it came out of the plastic.  Frankly, I think an edge bevel on anything other than a true race stock ski is a waste of time.  Unless you're trying to shave hundredths off a 30 second run down bulletproof ice it isn't worth the effort. 
post #4 of 10
You can't be serious about not edge beveling anything but a race ski.
Oh wait... is this your first shape ski?
You're right, factory tunes are often better
post #5 of 10
Quote:
Originally Posted by Tog View Post

You can't be serious about not edge beveling anything but a race ski.
Oh wait... is this your first shape ski?
You're right, factory tunes are often better

I'm dead serious.  And, I've been skiing shaped skis since way back in 2006

A ski is a ski and and edge is an edge.  I do understand the allure of spending all that time trying to eek the pinnacle of performance out of your new skis.  I just can't rationalize the actual physics of additional edge bevels making THAT much difference on snow or even ice for an expert skier that knows good edging technique.  It's all in your head mate.  Well, an 87 degree edge will dull more quickly than a 90 degree one will.  A sharp 90 degree edge isn't noticeably different than a sharp 89 or 87 degree edge on an 85mmm waist ski.  But, if taking the time and investing in the equipment to file that sucker anything beyond flush with the sidewall makes you feel better while skiing it wonderful!! Go knock yourself out

Wait, I almost forgot this
post #6 of 10

I use 1 base / 2 side. But it doesn't really matter...

post #7 of 10
Quote:
Originally Posted by crgildart View Post

I'm dead serious.  And, I've been skiing shaped skis since way back in 2006

A ski is a ski and and edge is an edge.  I do understand the allure of spending all that time trying to eek the pinnacle of performance out of your new skis.  I just can't rationalize the actual physics of additional edge bevels making THAT much difference on snow or even ice for an expert skier that knows good edging technique.  It's all in your head mate.  Well, an 87 degree edge will dull more quickly than a 90 degree one will.  A sharp 90 degree edge isn't noticeably different than a sharp 89 or 87 degree edge on an 85mmm waist ski.  But, if taking the time and investing in the equipment to file that sucker anything beyond flush with the sidewall makes you feel better while skiing it wonderful!! Go knock yourself out

Wait, I almost forgot this

 
Are you still "detuning" your skis also?
(This might explain his problem...no, doubtful we'll get anywhere here)
Well!! This is the Tuning section of the website ya know...
(and the sidewalls can be planed - even on a straight ski. hmm...should I point that out?)
I think you're about to make the jump to hyperspace and....a wide reverse camber, tail and tip rockered, potato chip ski. Yes, that explains it all.
or maybe you're about to start doing rails.

post #8 of 10
Quote:
Originally Posted by Tog View Post



Are you still "detuning" your skis also?
(This might explain his problem...no, doubtful we'll get anywhere here)
Well!! This is the Tuning section of the website ya know...
(and the sidewalls can be planed - even on a straight ski. hmm...should I point that out?)
I think you're about to make the jump to hyperspace and....a wide reverse camber, tail and tip rockered, potato chip ski. Yes, that explains it all.
or maybe you're about to start doing rails.


I thought everybody de-tuned their topsheets  At least on telemark skis anyway

Back on topic,, never EVER de-tune a dedicated bump ski.  A 1/3 or 1/5's totally the way to go there.  Wait, might I be confusing tune with detune??.... Neverminnnnnnnnd

Edited by crgildart - 1/27/10 at 6:17pm
post #9 of 10
Quote:
Originally Posted by Tog View Post



Are you still "detuning" your skis also?
(This might explain his problem...no, doubtful we'll get anywhere here)
Well!! This is the Tuning section of the website ya know...
(and the sidewalls can be planed - even on a straight ski. hmm...should I point that out?)
I think you're about to make the jump to hyperspace and....a wide reverse camber, tail and tip rockered, potato chip ski. Yes, that explains it all.
or maybe you're about to start doing rails.



good luck skiing a un detuned PE....

I just got mine back from a shop that made them way to freaking sharp scary un releaseable sharp.

Epic showed me how to do it myself and best tune on them to date.

I use 1 and 3 on all my skis these included.
post #10 of 10
That's one thing I don't miss about skiing in W. PA.... constantly trying to keep my skis undetuned. :D Hehe

I don't think the PE has that much to offer as an ice skate.. so this is sort of academic. Especially since the OP is using them for mostly park and powder and just enough rails to detune them...
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EpicSki › The Barking Bear Forums › On the Snow (Skiing Forums) › Tuning, Maintenance and Repairs › Edge angles for K2 Public Enemy Twins?