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#11
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Ski Binding Question
"Roger Moss" wrote in message
... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. My bones don't get any thicker or stronger just because I may put on weight! However, my wife and I recently had to hire some skis in an old-style family-run business in... well, anyway, the owner keyed all our details (including age) into a rather dated-looking Rossignol calculator. The figure which emerged was quite a bit lower than that which both of us have used in the past, but we decided to go with it to prove a point. Interestingly, despite skiing some of the steepest stuff in Areches quite enthusiastically, we had no problems at all with pre-releasing. Bottom Line, FWIW, seems to be that in the past maybe we've tended to over-spec the settings. I tell the shop to set my (hired) skis to 5 and my wifes to 3 (less than 9 stone). The skis don't pre-release. I see no benefit in having them on tighter. -- Michael Chare |
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#12
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Ski Binding Question
On 6 Feb, 12:05, "Michael Chare"
wrote: "Roger Moss" wrote in message ... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. *My bones don't get any thicker or stronger just because I may put on weight! I've always assumed it's momentum - 70Kg at 50 Km/h will be more likely to release than 50Kg at 50 Km/h and if you ski hard that could make a big difference. Matt |
#13
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Ski Binding Question
On Wed, 6 Feb 2008 12:05:29 -0000, in
, "Michael Chare" wrote: "Roger Moss" wrote in message ... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. My bones don't get any thicker or stronger just because I may put on weight! But the amount of pressure you're putting through the bindings does. for example, a 20-stone man would just pop out of bindings set on 5 as soon as he tried to edge even the gentlest turn, whereas a 5-stone 6-year-old might never release them on the same setting in even the hardest twisting fall. |
#14
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Ski Binding Question
Ace wrote:
On Wed, 6 Feb 2008 12:05:29 -0000, in , "Michael Chare" wrote: "Roger Moss" wrote in message ... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. My bones don't get any thicker or stronger just because I may put on weight! But the amount of pressure you're putting through the bindings does. for example, a 20-stone man would just pop out of bindings set on 5 as soon as he tried to edge even the gentlest turn, whereas a 5-stone 6-year-old might never release them on the same setting in even the hardest twisting fall. Also remember that boot sole length has a big effect on din setting, and though it seems counter intuitive the bigger your feet, the lower your DIN setting -- Chris *:-) |
#15
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Ski Binding Question
"MoonMan" wrote in message ... Ace wrote: On Wed, 6 Feb 2008 12:05:29 -0000, in , "Michael Chare" wrote: "Roger Moss" wrote in message ... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. My bones don't get any thicker or stronger just because I may put on weight! But the amount of pressure you're putting through the bindings does. for example, a 20-stone man would just pop out of bindings set on 5 as soon as he tried to edge even the gentlest turn, whereas a 5-stone 6-year-old might never release them on the same setting in even the hardest twisting fall. Also remember that boot sole length has a big effect on din setting, and though it seems counter intuitive the bigger your feet, the lower your DIN setting -- Chris *:-) Elementary physics agrees with you - think of the boot base/sole as the lever, so the shorter it is for an applied force... RM www.mountainpassions.com - an Online Magazine with Altitude. |
#16
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Ski Binding Question
"Ace" wrote in message
... On Wed, 6 Feb 2008 12:05:29 -0000, in , "Michael Chare" wrote: "Roger Moss" wrote in message ... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. My bones don't get any thicker or stronger just because I may put on weight! But the amount of pressure you're putting through the bindings does. for example, a 20-stone man would just pop out of bindings set on 5 as soon as he tried to edge even the gentlest turn, whereas a 5-stone 6-year-old might never release them on the same setting in even the hardest twisting fall. But if the 20 stone man had the same size bones as a 10 stone man, then I would say that he would be taking a considerable risk if he set the bindings to a high setting. -- Michael Chare |
#17
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Ski Binding Question
"Ace" wrote in message ... On Mon, 4 Feb 2008 22:15:22 -0000, in , "PSmith" paulDOTsmith_UK@tiscaliDOTcoDOTuk wrote: When my skis are in summer storage I always un-tension the bindings (which I recall reading some years ago as being good practice). I really don't thin it's necessary. I've never done this, and most years they bindings are re-tested (free, a servoce offered by our employer, presumably to reduce accidents and lost time) and are fine. I must say I have not realy looked into what constitutes a binding design. I always have a mental picture of a piece of rubber under tension. I would then suspect that rubber would deteriorate. For all the years that I lived in Munich I never bothered de-tensioning my bindings. Afterall the skis were never stored for that long anyway. Before Munich I always de-tensioned and now that we are back in the UK with skis stored in what can be a hot garden shed I did it as a matter of course. Maybe I needn't bother in future - just have a pre-season service. My wife has not skied (mainly because of the kids) for several years. Now on preparing her skis for our forthcoming trip to Kitzbühel I cannot find the sheet of paper where I recorded her DIN settings. I think my wife's bindings where set to 7. She remembers them as being set to 7. This could be correct, but only if she's a very fit, aggressive skier, and not on the short and thin side. But the tone of your post seems to suggest otherwise. Alas not anymore. If only she were a thin and fit and aggressive skier! Then she could keep up with me! I have found several websites with DIN guides, and I have downloaded DIN calculators: they return a value of 5.25/5.5 for my wife (based on age, height, weight, ability and boot sole length)? Sounds about right for an int-adv female of normal size, so I'd go with it. Try skiing a couple of normal runs, then increase difficulty. If they don't pre-release they should be fine. Our local ski shop today calculated 5. My wife and I are somewhat confused by our recollection of the 7. She does plan a couple of "shakedown" runs to ensure they perform as expected. When she bought her skis (in Munich), the technician measured the width of her leg / bone as part of binding setup. Is there a reason for this discrepancy? Doubtful. More likely the ski-tech was using some ancient approximation, possibly based on the longer skis of yore. Her skis/bindings (Salomon) are probably five years old (but she is very happy with them): is this a factor? No. Thanks very much for the useful advise. There are certainly some interesting things coming out of this thread. Paul |
#18
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Ski Binding Question
"Michael Chare" wrote in message news "Ace" wrote in message ... On Wed, 6 Feb 2008 12:05:29 -0000, in , "Michael Chare" wrote: "Roger Moss" wrote in message ... "Matt T" wrote in message Agreed. Usual ski-tech questions centre on height, weight and ability - i.e. aggressive or leisurely approach. Obviously, weight is a key factor here. I've never understood why. My bones don't get any thicker or stronger just because I may put on weight! But the amount of pressure you're putting through the bindings does. for example, a 20-stone man would just pop out of bindings set on 5 as soon as he tried to edge even the gentlest turn, whereas a 5-stone 6-year-old might never release them on the same setting in even the hardest twisting fall. But if the 20 stone man had the same size bones as a 10 stone man, then I would say that he would be taking a considerable risk if he set the bindings to a high setting. -- Michael Chare All the guidance on DIN settings hovers around age as well. Hitting "50" the DIN settings seem to reduce by 1. I appreciate that bones in older people can become brittle, or is it an indication that older people should slow down! Paul |
#19
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Ski Binding Question
On Wed, 6 Feb 2008 22:12:47 -0000, in
, "PSmith" paulDOTsmith_UK@tiscaliDOTcoDOTuk wrote: "Ace" wrote in message .. . On Mon, 4 Feb 2008 22:15:22 -0000, in , "PSmith" paulDOTsmith_UK@tiscaliDOTcoDOTuk wrote: When my skis are in summer storage I always un-tension the bindings (which I recall reading some years ago as being good practice). I really don't thin it's necessary. I've never done this, and most years they bindings are re-tested (free, a servoce offered by our employer, presumably to reduce accidents and lost time) and are fine. I must say I have not realy looked into what constitutes a binding design. I always have a mental picture of a piece of rubber under tension. Well I suggest you endeavour to lose that image and replace it with one made up of high-quality metal springs in perfect balance. I would then suspect that rubber would deteriorate. Modern materials, including rubber (usually at least partially artificial) are astonishing in their versatility and longevity. And all else apart, if rubber were going to perish over time it would do si just as much whether under tension or not. For all the years that I lived in Munich I never bothered de-tensioning my bindings. Afterall the skis were never stored for that long anyway. Before Munich I always de-tensioned and now that we are back in the UK with skis stored in what can be a hot garden shed I did it as a matter of course. Maybe I needn't bother in future - just have a pre-season service. Probably. There is a school of thought that suggests the de-/re-tensioning puts more strain on the springs than just leaving them, or so I've heard. |
#20
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Ski Binding Question
On Wed, 6 Feb 2008 22:19:18 -0000, in
, "PSmith" paulDOTsmith_UK@tiscaliDOTcoDOTuk wrote: All the guidance on DIN settings hovers around age as well. Hitting "50" the DIN settings seem to reduce by 1. I appreciate that bones in older people can become brittle, or is it an indication that older people should slow down! Yes, and Yes. Or more accurately that most people become somewhat less gung-ho and more controlled as they get older and wiser. The overriding rule should always be that bindings should be set as low as is possible, to avoid injury, while still ensuring they'll stay on for any level of abuse which the skier would be able to recover from. If you don't _need_ your bindings set high, don't set them high. |
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