But whether that mass is distributed over 24" or 60" makes a difference.No, it's the mass of the skier that bends the ski in a turn
But whether that mass is distributed over 24" or 60" makes a difference.No, it's the mass of the skier that bends the ski in a turn
No it doesn't, there's one vector only.But whether that mass is distributed over 24" or 60" makes a difference.
Real life NEVER has one vector. Physics texts simplify for the purpose of illustration.No it doesn't, there's one vector only.
No, it's the mass of the skier that bends the ski in a turn
This is the mindset that I have had for sometime after taking a lesson with @Bob Barnes.You're not supposed to lean on your boots to get forward, just pull your feet back.
And anyway it's the turn forces that bend a ski
You are right, the skiers ability to maintain a carved turn will influence how much her can bend the ski, and his ability to attain high edge angles and high speed.I get that the mass of the skier bends the ski, but I understand that it goes deeper than that.
Example @ScotsSkier is a small guy, but I have no doubt that he can bend a ski better than some bigger guys I know who don't have his skill set.
At what point do we look at physiology?
@Mendieta is considering changing the mount point on his skis, but he is still in his beginner boots that he got a few years ago, while his skis have graduated.
It could (emphasis on could) be possible that his boots are too soft for the updated skis.
This is the mindset that I have had for sometime after taking a lesson with @Bob Barnes.
Its the difference between thinking about flexing your ankles and flexing into the front of the boot.
When I work with someone in a ski package I ask a lot of questions regarding other activities they do. Then I match the ski and boot combo. It doesn't work well to have someone in a marshmallow of a boot on a stiffer ski, or vice versa.
@Mendieta is considering changing the mount point on his skis, but he is still in his beginner boots that he got a few years ago, while his skis have graduated.
It's true that the weight of the skier bends the ski. It is also true that the skis can be leveraged to bend. Warren W actually describes both of those... but what should happen? Good question... if you find that you have to leverage the boot to bend the ski, you're likely unweighting the tails too much and also you're very likely to jam the bottom of the turn pretty hard, as you're "stuck" on the front of the boot! And yes, taller skiers would find it easier to leverage the ski into bending!
It is more preferable, in my mind, to let the centrifugal force bend the ski for you (or centripetal, whatever).
Also, interestingly, I was just looking at this discussion on bending the skis with weight or angles on Facebook, started by the mischievous Tom Gellie and, as I couldn't sleep well - having replaced scotch with tequila (yeah, I know)-, I did the math/physics.
It turns out that
1) the mass of the skier is not relevant (as long as you have enough to balance on the ski on edge, I guess)
2) at 60 degrees edge angle, the centrifugal force is 3x and the radius is x/3 compared to 30 degrees edge angle
3) at 60 degrees edge angle and 40 kmh linear speed, the radius is 7m and at 30 degrees, it is 22m, which instinctively sounds about right...
F = m S^2 / r
F = G * tan(e)
G = m * g
F = m g tan (e)
r = S^2 / g tan(e))
or thereabouts - it is likely that the tequila had an impact on my math... and I got my sins or cousins wrong...
p.s. of course this looks at an idealized turn, but in reality, the shape of the ski (SL vs GS) dictates the ski bend thus the centripetal force, which emphasizes the dangers of relying on tequila... when dealing with these quarks... err, quirks...
So... what all this quantum physics shows is that the way to bend the ski is to put it on edge and balance on it!