Another Pavel Tip: Plastic ski plates and screws

Dave Mac wrote:

Simple innit?

crystal :thumbup:

Dave Mac wrote:Forgot to say, great picture, beautiful technique. I'm not a carving fan, but when it's done as well as that .....

I'm sure there's still plenty to critisize.... :wink:

Dave Mac wrote:

This indicates that in the riser condition, there is 2.5% less force on the knee.

However, in that case, the force on the knee would be even less.

It may also be that in using a riser, the fulcrum remains as the base of the boot, actually at the toepoint. In which case, there would be no change in knee leverage.

Simple innit?

Thanks for input Dave. Hope didn't you stay up too late.

I would have thought that the longer the lever, the more force might be applied. Are we thinking diferent scenarios ? I was picturing a spanner on a nut (the knee). The longer the spanner, the easier it is to turn (and break something).

Trencher

Dave Mac wrote:For skiing dynamics, the body momentum passes through at the metacentric height. On the human body, the MH is at the centre of the chest

That sounds a little too high to me, it's also lower for women for what it's worth. One of the genuine reasons, apart from colour, that womens kit should differ.

Otherwise that's about right. It's just another example of a ski myth defying all evidence. In fact, ski accidents measured by mean time between accidents or number of accidents per skier days are going down. Even knee injuries, measured by reported ACL injuries are going down as well. Snowboarding and snowblading figures are going the other way, in the latter case there is a real level effect.

Like many ski myths if people just stopped and thought about it they'd see it's not likely to be true, binding's have improved so very much that they're able to open under a huge range of forces from different directions unlike 20 or even 10 years ago.

ise wrote:
Otherwise that's about right. It's just another example of a ski myth defying all evidence. In fact, ski accidents measured by mean time between accidents or number of accidents per skier days are going down. Even knee injuries, measured by reported ACL injuries are going down as well. Snowboarding and snowblading figures are going the other way, in the latter case there is a real level effect.

Like many ski myths if people just stopped and thought about it they'd see it's not likely to be true, binding's have improved so very much that they're able to open under a huge range of forces from different directions unlike 20 or even 10 years ago.

Don't want to keep a myth alive, but didn't the FIS reduce regulation stand height from 55mm to 45mm because of an increase in knee injuries to racers ? Wouldn't like to think those stimulators of ski innovation relyed on urban legends for guidance :wink:

Trencher

Trencher wrote:

ise wrote:
Otherwise that's about right. It's just another example of a ski myth defying all evidence. In fact, ski accidents measured by mean time between accidents or number of accidents per skier days are going down. Even knee injuries, measured by reported ACL injuries are going down as well. Snowboarding and snowblading figures are going the other way, in the latter case there is a real level effect.

Like many ski myths if people just stopped and thought about it they'd see it's not likely to be true, binding's have improved so very much that they're able to open under a huge range of forces from different directions unlike 20 or even 10 years ago.

Don't want to keep a myth alive, but didn't the FIS reduce regulation stand height from 55mm to 45mm because of an increase in knee injuries to racers ? Wouldn't like to think those stimulators of ski innovation relyed on urban legends for guidance :wink:

Trencher

I'm not sure we can draw many conclusions from what racers experience, it's a little different from the rest of the skiing public. There's a couple of surveys, one re-posted here a few days back, which show that incidence in racers is higher. While many people ski on kit heavily based on race stock gear very few actually have access to real race stock gear. I can't imagine many recreational skiers have stand heights of 55mm )

ise wrote:

I'm not sure we can draw many conclusions from what racers experience, it's a little different from the rest of the skiing public. There's a couple of surveys, one re-posted here a few days back, which show that incidence in racers is higher. While many people ski on kit heavily based on race stock gear very few actually have access to real race stock gear. I can't imagine many recreational skiers have stand heights of 55mm )

We were actually talking about big risers, not the run of the mill set ups.

Trencher wrote:

One thing is for sure, big riser plates make you look very serious 8).

Trencher

Trencher

Trencher wrote:
We were actually talking about big risers, not the run of the mill set ups.

yes, and I was pointing out that a run of the mill set up would be under 45mm already. So, if we're talking about run of the mill set ups then you're saying they're already below the level FIS though was dangerous and i agree, that's what I said.

Trencher wrote:

One thing is for sure, big riser plates make you look very serious 8).

Trencher

:lol:




Trencher