No worries, I wouldn't be surprised if I were using the improper terms or at least used improperly. I've read so many things that they've all become jumbled. Also, keep in mind that I've been looking at spring hinges, gas springs and soft close devices. You'll see that formula (whatever it may be) for these hinges....
http://www.rockler.com/self-balancing-lid-support-select-lbs-weight-you-need
"Surface mounts only 4-1/2" from back of the cabinet. Statuary bronze finish. (Lid weight times front to back size) divided by 2 equals" pounds range."
http://www.rockler.com/soft-down-lid-support
"Use one support per 43 inch/lbs. Determine inch/lbs with this formula: (lid wt. X front to back size) divided by 2. "
Calculators...http://www.rockler.com/self-balancing-lid-support-select-lbs-weight-you-need
"Surface mounts only 4-1/2" from back of the cabinet. Statuary bronze finish. (Lid weight times front to back size) divided by 2 equals" pounds range."
http://www.rockler.com/soft-down-lid-support
"Use one support per 43 inch/lbs. Determine inch/lbs with this formula: (lid wt. X front to back size) divided by 2. "
On Tue, Oct 27, 2015 at 8:56 PM, Bob Davis bob@wrobertdavis.com [DoIt_Yourself] <DoIt_Yourself@yahoogroups.com> wrote:
With all due respect, this just doesn't make sense. Force and torque are not the same thing. Pounds/sq inch has no relevance. Can you give a link to an example for what your are describing that shows a formula? The formula you quoted is not one I am familiar with. What is the "width" term? Why is it divided by 2? Can you post a sketch of picture of what you are trying to do? I get the feeling your analysis of capacities needed is not based on a proper model of how to calculate the forces.
BobOn Oct 27, 2015, at 3:46 PM, subprong subprong@gmail.com [DoIt_Yourself] <DoIt_Yourself@yahoogroups.com> wrote:Bob, I think I'm using the correct term but perhaps not. As I've been researching these devices, I've seen a formula given with several products. The formula is to basically determine how much force or torque your item needs in order to lift it so that you can compare it to the pound rating for the hinges. The formula is weight (pounds) x (TIMES) width (inches) (front to back) / (DIVIDED BY) 2 . What I need is between 1000-2000. The highest I've seen in-store is about 100 per hinge.
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Posted by: subprong <subprong@gmail.com>
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