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#41
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Can I set my own bindings?
Walt wrote:
VtSkier wrote: Walt wrote: Pound is the unit of force in the English system. Weight is the force that is due to gravity, but it's a force all the same so that's why we express weight in units of force: i.e. pounds. Newton is the unit of force in the metric system. Yes, but, generally... Force = Weight And I realize I got my units wrong. Weight is just one particular kind of force (force due to gravity). It's a common force, but not the only one. Weight is force. But force is not necessarily weight. Torque is rotational force, and is expressed as the force times the Almost but not quite. Pound-foot and Newton-meter are measures of WORK which is the movement of a weight or force over a distance. Then Torque is rotational WORK. In this case, a torque wrench operates in a rotational mode. BTW, I actually meant to hit Cancel, but hit Send instead. mea culpa. But, now that I'm in the middle of the argument, torque is force applied at some distance, Yes, but isn't that what WORK/ENERGY is? hence it has units of force X length (i.e. foot-pounds or newton-metres) Work (energy) also has units of force x distance, but to say that torque is equivalent to work is not quite correct. For instance, if I'm trying to unscrew a nut, but can't get the &%^$*! thing to move I may be exerting substantial torque but I'm not doing any work since nothing's moving. Here's where we get into the difference between potential energy and kinetic energy. If the nut doesn't move, the force you are applying is POTENTIAL because no WORK is getting done. If the nut moves, then TORQUE is being applied and, as you say, TORQUE is a form of WORK. You are applying FORCE, but it's not yet TORQUE/WORK because nothing has moved. TORQUE is not a form of FORCE. Torque is not a form of work or energy, although the units are the same. Yes it is. //Walt |
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#42
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Can I set my own bindings?
(snip)
And who said you can't learn a thing or two here on RSA!?! JQ Dancing on the edge |
#43
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Can I set my own bindings?
VtSkier wrote:
Walt wrote: ... torque is force applied at some distance, Yes, but isn't that what WORK/ENERGY is? Work is force acting though a distance: W = F(dot)d. With torque, the force is perpendicular to the distance vector , so when you compute the dot product you get zero. Torque, like distance and force, is a vector quantity while energy (work) is a scalar. To compute torque, you take the vector cross product of force and position vector: T = F x d. This gives a vector, unlike the dot product above which gives a scalar. To say a vector (torque) is equal to a scalar (energy) is like saying Wednesday is equal to cheese. It makes no sense. //Walt |
#44
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Can I set my own bindings?
This is no joke: Please, Please PLEASE have the binding/boot combo
certified by a real technician. Make sure they put it on the boot torque machine--or whatever they call it to ensure that the boot and binding system are working together properly and the binding releases as it should. Please don't risk your daughter's knees any further. "Suanne Lippman" wrote in message ... I just bought a pair of Fischer skis and bindings over the internet for my wife. (actually everyone local was out of stock for the year!) The system is such that mounting the bindings and setting them for the boot size is pretty foolproof. She is a very conservative skier, so setting the adjustments at the very bottom of the scale (4) like her old skis should be fine. I am able to pop the boots out with what seems like a reasonable amount of force Is there any compelling reason to have an "expert" check this over; are brand new binding likely to be really far off? If it were for me I wouldn't worry about it, but I would hate to see someone else get hurt because I would spring for a prudent expense. Thanks. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#45
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Can I set my own bindings?
Walt wrote:
To say a vector (torque) is equal to a scalar (energy) is like saying Wednesday is equal to cheese. It makes no sense. I pushed my Brie into next Thursday. -klaus |
#46
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Can I set my own bindings?
Wayne Decker wrote:
This is no joke: Please, Please PLEASE have the binding/boot combo certified by a real technician. Make sure they put it on the boot torque machine--or whatever they call it to ensure that the boot and binding system are working together properly and the binding releases as it should. Please don't risk your daughter's knees any further. So here is a what to do question. Last year I spent a fair amount of time trying to get my binding tested. I wanted to check my downhill -SG ski's with a pair of 10-18 binding on them. I went to one place that would only test them at my DIN setting of 7. I said the DIN range is 10 to 18 how are you going to test them at 7? I would be happy to pay what ever would be charged. Do you know of any shops that will test race binding? With further investigation it appears that the only way this testing works is to follow the charts, you can not set the machine to test for a din of 13 and they will not even test my 6-14 bindings at 9 which is what I run my GS ski's at. So as much as it is best to have binding checked it is not always possible. Sometimes it is pointless binding do not work as well at one extreme setting or the other and should be picked so your DIN adjustment is in the middle of the range. I have had 3 sessions with techs on binding so I am getting familiar with the atomic race line of binding and comfortable with setting up my own. I can always check with a tech if I have a question. But it is not really the thing to do to save money by setting your own binding, if your going to do it yourself you need to invest the time to learn to do it properly. Otherwise it is much cheaper to have somebody else do it. I had my first pair of atomic binding setup at Ski Stop on LI the bindings worked but were not setup correctly. Ric Hodge noticed they were done incorrectly, he removed & reset them while waiting to take my GS race run. I was a little freaked to see my binding in pieces on top of the race hill. The Ric Hodge story is to illustrate the difference between a knowledgeable person and someone reading from a manual as they setup your binding. Most techs that really understand what they are doing will fill you with information if you ask, but you need to ask the right questions. I bring cannoli's from Little Italy as bribe food. But the experience of the tech is what he has learned from those abnormal problems that crop up. A insert that has been cross threaded, or a screw from the factory that is too long and should be used with a riser plate that when installed with out a riser plate only sticks out a little of the base. michael |
#47
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Can I set my own bindings?
klaus wrote:
Walt wrote: To say a vector (torque) is equal to a scalar (energy) is like saying Wednesday is equal to cheese. It makes no sense. I pushed my Brie into next Thursday. Silly cheese-pusher. Real men roll their cheese. http://www.cheese-rolling.co.uk/ //Walt |
#48
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Can I set my own bindings?
"Walt" wrote in message ... klaus wrote: Walt wrote: To say a vector (torque) is equal to a scalar (energy) is like saying Wednesday is equal to cheese. It makes no sense. I pushed my Brie into next Thursday. Silly cheese-pusher. Real men roll their cheese. Oh, klaus loves to push cheese. Especially into his buddy Andrew McLean. Hey, this is fun. Next thing you know, I'll really emulate Klaus Biggers and start calling him mentally ill, deranged, etc. More fun just to call him a liddle faggot. Fair is fair, right? ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#49
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Can I set my own bindings?
Walt wrote:
klaus wrote: Walt wrote: To say a vector (torque) is equal to a scalar (energy) is like saying Wednesday is equal to cheese. It makes no sense. Yes it does! I pushed my Brie into next Thursday. Silly cheese-pusher. Real men roll their cheese. http://www.cheese-rolling.co.uk/ I've heard that a number of participants have been killed in the endeavor. Indeed, it is a manly sport. -- Cheers, Bev ++++++++++++++++++++++++++++++++++++++++++++++ I'm pretty sure omnipotent entities don't need middlemen to get their message to the people. |
#50
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Can I set my own bindings?
On Feb 15, 7:57 pm, Walt wrote:
VtSkier wrote: Walt wrote: ... torque is force applied at some distance, Yes, but isn't that what WORK/ENERGY is? Work is force acting though a distance: W = F(dot)d. With torque, the force is perpendicular to the distance vector , so when you compute the dot product you get zero. Torque, like distance and force, is a vector quantity while energy (work) is a scalar. To compute torque, you take the vector cross product of force and position vector: T = F x d. This gives a vector, unlike the dot product above which gives a scalar. To say a vector (torque) is equal to a scalar (energy) is like saying Wednesday is equal to cheese. It makes no sense. //Walt Yeah, everybody know Wednesday is Prince spaghetti (day). Chris |
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