Asies
Páginas: 7 (1525 palabras)
Publicado: 13 de febrero de 2011
V2-XL100 & 98...
free style roller skis for paved surfaces
V2... THE CHOICE OF CHAMPIONS
Revised October 12, 2008
Just a few of the 2006 Olympic skiers that train on V2 Roller skis. Kristina Smigun...Gold 15 K pursuit, Gold 10K classic, 8th 30K free. Andrus Veerpalu... Gold 15K classic Evgni Medvedeva... Gold relay, Bronze 15K pursuit Natalia Baranova... Gold relay Jay Hakkinen... 10th20K, 13th 15K biathlon Julija Tchepalova...Gold relay, Silver 30K free Larissa Kurkina...Gold relay Jack Mae...5th 15K classic Sarah Konrad... top US distance skier at the Olympics Chandra Crawford... Gold Sprint The XL 100 & XL98 incorporate the best design elements from previous V2 models combined with revolutionary new technology.
COMPOSITE SHAFT: Most roller ski shafts are made of aluminum.It’s a wonderful material and when using the shock absorbing pneumatic tires on the V2 Aero series the ride is smooth. However, aluminum has a low fatigue resistance so the shaft has to be very stiff. When using solid tires the aluminum shaft can produce a stiff ride, especially for lighter skiers. If you make a flexible aluminum shaft it will fail prematurely due to fatigue. Composite shafts havegood fatigue resistance and can be designed to flex so the shaft absorbs the road vibration. But, if you design a composite shaft for a person weighing 90 Kg., it will be too stiff for a person weighing 50 Kg. In order to get a smooth ride for different weight skiers we produce two shafts, a Medium Flex for skiers up to about 77Kg. (170 pounds) and a Stiff Flex for heavier skiers. ( However, theweight of the skier is not the only factor in picking the shaft flex. A very strong light weight skier who has a very powerful push off might need a Stiff flex ski and a heavier skier who skis very smoothly might prefer a Medium flex shaft. ) The XL100 XL98 use a true composite shaft made from 20 laminations. To reduce weight, the center of the core is hollow. The latest XL100 shafts have aseamless carbon fiber so the carbon completely encases the core. With this structure we can make the core much lighter as the carbon is now in both tension and compression. This is what Zach Caldwell, one of the most respected members in the X-C ski community, e mailed us about the XL100.
The latest composite shaft have a seamless carbon fibre structure which covers all sides of the core. This makesfor a stronger, lighter shaft.
XL 98
100 mm XL100
The only difference between the XL100 and the XL98 is the size and profile of the tire. The XL98 is 98 mm and has a more rounded profile. This tire weighs approximately 25 grams less than the larger and flatter profile XL100 tire. Since a pair of XL98 weigh about 100 grams less than the XL100, those who like very light roller skis mightprefer the XL98. Since both skis use the same shafts, when using the XL98 tires you loose 1.25 mm of ground clearance.
“Bottom - line - these are clearly the best roller skis I have ever been on. These shafts are SO MUCH better than any previous shafts, it’s not even worth comparing.”
Page 2 of 3 ISR & ROLLING RESISTANCE: The rolling resistance of tires is dependent on the amount of energyabsorption. A fast tire absorbs very little energy while a slow tire absorbs a lot of energy. Slow tires can become extremely hot, so hot that they rupture. Instead of using high energy absorbing rubber, V2 uses a patented kinematic damping system to increase rolling resistance. But, with a split rim we cannot employ our standard kinematic system. In order to increase rolling resistance we added a 22mm pocket on the inside of the split rim. In this pocket we press fit the ISR ( Internal Speed Reducer). The ISR has two elastic sealing lips that rotate around a very precise hardened steel spindle. Between the two sealing wipers is a high viscosity lubricating fluid. This system increases the rolling resistance by about 15 to 20%. The heat generated is dissipated via the aluminum bearing tube...
free style roller skis for paved surfaces
V2... THE CHOICE OF CHAMPIONS
Revised October 12, 2008
Just a few of the 2006 Olympic skiers that train on V2 Roller skis. Kristina Smigun...Gold 15 K pursuit, Gold 10K classic, 8th 30K free. Andrus Veerpalu... Gold 15K classic Evgni Medvedeva... Gold relay, Bronze 15K pursuit Natalia Baranova... Gold relay Jay Hakkinen... 10th20K, 13th 15K biathlon Julija Tchepalova...Gold relay, Silver 30K free Larissa Kurkina...Gold relay Jack Mae...5th 15K classic Sarah Konrad... top US distance skier at the Olympics Chandra Crawford... Gold Sprint The XL 100 & XL98 incorporate the best design elements from previous V2 models combined with revolutionary new technology.
COMPOSITE SHAFT: Most roller ski shafts are made of aluminum.It’s a wonderful material and when using the shock absorbing pneumatic tires on the V2 Aero series the ride is smooth. However, aluminum has a low fatigue resistance so the shaft has to be very stiff. When using solid tires the aluminum shaft can produce a stiff ride, especially for lighter skiers. If you make a flexible aluminum shaft it will fail prematurely due to fatigue. Composite shafts havegood fatigue resistance and can be designed to flex so the shaft absorbs the road vibration. But, if you design a composite shaft for a person weighing 90 Kg., it will be too stiff for a person weighing 50 Kg. In order to get a smooth ride for different weight skiers we produce two shafts, a Medium Flex for skiers up to about 77Kg. (170 pounds) and a Stiff Flex for heavier skiers. ( However, theweight of the skier is not the only factor in picking the shaft flex. A very strong light weight skier who has a very powerful push off might need a Stiff flex ski and a heavier skier who skis very smoothly might prefer a Medium flex shaft. ) The XL100 XL98 use a true composite shaft made from 20 laminations. To reduce weight, the center of the core is hollow. The latest XL100 shafts have aseamless carbon fiber so the carbon completely encases the core. With this structure we can make the core much lighter as the carbon is now in both tension and compression. This is what Zach Caldwell, one of the most respected members in the X-C ski community, e mailed us about the XL100.
The latest composite shaft have a seamless carbon fibre structure which covers all sides of the core. This makesfor a stronger, lighter shaft.
XL 98
100 mm XL100
The only difference between the XL100 and the XL98 is the size and profile of the tire. The XL98 is 98 mm and has a more rounded profile. This tire weighs approximately 25 grams less than the larger and flatter profile XL100 tire. Since a pair of XL98 weigh about 100 grams less than the XL100, those who like very light roller skis mightprefer the XL98. Since both skis use the same shafts, when using the XL98 tires you loose 1.25 mm of ground clearance.
“Bottom - line - these are clearly the best roller skis I have ever been on. These shafts are SO MUCH better than any previous shafts, it’s not even worth comparing.”
Page 2 of 3 ISR & ROLLING RESISTANCE: The rolling resistance of tires is dependent on the amount of energyabsorption. A fast tire absorbs very little energy while a slow tire absorbs a lot of energy. Slow tires can become extremely hot, so hot that they rupture. Instead of using high energy absorbing rubber, V2 uses a patented kinematic damping system to increase rolling resistance. But, with a split rim we cannot employ our standard kinematic system. In order to increase rolling resistance we added a 22mm pocket on the inside of the split rim. In this pocket we press fit the ISR ( Internal Speed Reducer). The ISR has two elastic sealing lips that rotate around a very precise hardened steel spindle. Between the two sealing wipers is a high viscosity lubricating fluid. This system increases the rolling resistance by about 15 to 20%. The heat generated is dissipated via the aluminum bearing tube...
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