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skis with little LED lights on them that flash as the ski vibrates or flexes

post #1 of 8
Thread Starter 

this is a test, pencils down.

 

saw this guy skiing down the hill and thought sparks were flying off his edges. then I saw that there were no rocks where he was skiing. as he came under the chair, I could see that there were little lights in the forebody of the ski, set into the top sheet. anyone? Is it mechanical feedback to indicate some function of the ski is indeed functioning? Head chip perhaps? Something old or something new? I dunnoth_dunno-1[1].gif

post #2 of 8
Sounds like the old K2 Four.... Those little lights were marketed as "piezo-electric dampers"--vibration controllers of some sort--something about the energy of vibration being converted to electricity, with a light to prove it. Good marketing, probably not so effective on the engineering side, but those little red light skis were the epitome of cool for many!

Best regards,
Bob
post #3 of 8
Quote:
Originally Posted by davluri View Post

this is a test, pencils down.

 

saw this guy skiing down the hill and thought sparks were flying off his edges. then I saw that there were no rocks where he was skiing. as he came under the chair, I could see that there were little lights in the forebody of the ski, set into the top sheet. anyone? Is it mechanical feedback to indicate some function of the ski is indeed functioning? Head chip perhaps? Something old or something new? I dunnoth_dunno-1[1].gif



K2 fours  (around 1996)

 

If the lights blinking the ski is thinking..

 

K2 Four 1996 2.jpg

 

 

 

 

post #4 of 8

I think K2 put that LED on some other models as well. A pezioelectric element was used to convert vibrational energy to electric energy, thus damping the vibrations. I rode a lift with someone Friday who had some red K2s with a gray stripe down the middle that had the little lights.

 

There is a new model (I forgot which one) that uses pezioelectricity to stiffen the ski somehow but they don't light up.

post #5 of 8

My first shaped skis - K2 Merlin III - had the led and piezoelectric damping.

post #6 of 8

I still have an old pair or the K2 X-15s. Their OK I guess. The last time I had them in my hands I banged them on the ground to see if I would get a flash. They did. rolleyes.gif

 

K2 had different sizes of energy producing grids for their skis that year. It all depended on which ski model you chose as to the size the skis got. But still there was only one red LED on each ski. If it would have been really all that great I think they would still be with us today.

 

I think Dave saw something else. Possibly a home brew or proposal design.

 

Come to think of it I do remember a friend of mine stating he saw sparks from my Rossignol ROCs on ice in the woods at night on a run called Log Chute. No lights on those skis. Just steel edges. icon14.gif

post #7 of 8
Thread Starter 

how did I know you guys would know? awesome. thanks. funny. ski on! I guess rubber does the same, converts vibration by absorbing/spending it.

post #8 of 8

Merlin IV, V and VI had the little blinker too....

 

I still have a 2 near mint sets of K2 4's on with Sal 977 equipe bindings on em (the yellow ones) and the other with Look Pivot turntables.... they get out for the occasional spin, especially at Yawgoo....a pair might go for a spin Wednesday nite actually!

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