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Performance Binaries With Skis

post #1 of 12
Thread Starter 
Can someone help me understand how different features of skis TEND (please note that word) to create trade-off binaries in terms performance?

In other words, if you're getting more forgiveness, what are you most likely losing? If you get more edge hold, what do you most often have to sacrifice? If ski dampness goes up, what's down? If liveliness goes up, what goes down? Shorter length, more what? etc etc etc

So, I'm trying to create an actual list of binaries. I fully realize that some skis don't function like this, and that part of what makes a ski stand out may be how it manages to buck the binary tendencies of other skis.
post #2 of 12
Here's a start:

More forgiveness = less edge hold
Shorter length = more instability at speed
More radius = more instability at speed
post #3 of 12
Length = Stability(long) v. Maneuverability(short)
Torsional Rigidity = Good Edge Grip(rigid) v. Forgiveness(soft)
Flex= Stability+rebound(stiffer) v. Maneuverability+forgiveness (softer)
Sidecut = More= clean carved shorter turns v. Less=Stability at speed
Taper Angle = wide shovel draws the ski into a turn, narrow tail allows it to release, symmetrical sidecut wants to complete turns across the fall line.
Width = Edge quickness v. Soft snow performance
Dampness = Less=lively v. More= smoother/ more stable
post #4 of 12
Only one thing to add.

Width: More = Kool..........Less = UnKool

SJ
post #5 of 12
cool graphics = more performance in every category imaginable
post #6 of 12
Quote:
Originally Posted by Tyrone Shoelaces View Post
cool graphics = more performance in every category imaginable

Geeeez how could I have missed that one??

SJ
post #7 of 12
"Performance trade-off binaries"

Is that a phrase created by suits with MBA degrees?
post #8 of 12
Quote:
Originally Posted by Voltron View Post
"Performance trade-off binaries"

Is that a phrase created by suits with MBA degrees?
It's a poser term, obviously!
post #9 of 12
Whiteroom summed it up;

Compare and contrast the Head Supershape (170cm, 120-65-105mm) with the Dynastar Legend XXL (194cm, 132-109-122mm) and the data rings true in all cases except taper. Always one exception to prove the rule!

Michael
post #10 of 12
Thread Starter 
OK, to sum things up (notwithstanding the hilarious joke-binaries):
  • More forgiveness = less edge hold
  • Shorter length = more instability at speed
  • More radius = more instability at speed
  • Length = Stability(long) v. Maneuverability(short)
  • Torsional Rigidity = Good Edge Grip(rigid) v. Forgiveness(soft)
  • Flex= Stability+rebound(stiffer) v. Maneuverability+forgiveness (softer)
  • Sidecut = More= clean carved shorter turns v. Less=Stability at speed
  • Taper Angle = wide shovel draws the ski into a turn, narrow tail allows it to release, symmetrical sidecut wants to complete turns across the fall line.
  • Width = Edge quickness v. Soft snow performance
  • Dampness = Less=lively v. More= smoother/ more stable
ANY OTHERS? This is really helpful for this dumbarse. I've been looking for an article that would explain all this stuff but really never found one that seemed to have it all. Some of it I knew, but much was a mystery to me.
post #11 of 12
Heavy = More stable at speed though less forgiving
post #12 of 12
I think you need to change "more radius" to lower radius for less stable at speed and more wobbly going straight at any speed. And the stability is something other than just vibrational stability.

Add Heavy and solid = less sensitive and less responsive

Stiffer - better hard snow performance and poorer soft snow performance.
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