Ryan: What I would do... 'is test all the springs on a scale..' too! A BATHroom scale.
HoMedics makes a good one!!
(Like I know this is going to work out)...
Using PVC or some dowel..configure a tool to test your springs on a good (digital) bathroom scale. If you're lucky, your scale will be pound/kg selectable The tool needs to work as a spring guide to keep the spring straight and to provide a positive stop at a given distance when it's compressed.
Ex: Compress the spring 10mm on the scale. Convert the pounds to kg if you need to. A .38kg/mm spring in the this case will 'weigh' 8.36 pounds.
Anyway......
This is fun. I figgered the formula as simply something interesting to post, not anything etched in stone. Obviously what the spring is MADE out of matters..so figuring a spring rate based on # of coils, diameter and thickness leaves a whole lot to be desired.
Or...what IC said.
'What rate spring do I have' is a common question. I figured a little math would shut some of THAT up!!
BTW, 'No... doesn't sound right... '
Yes, it does.
23lbs/inch=.9055+lb/mm= .41kg/mm
Considering the plus and minus of things, margin of error etc, I'd say Ryan measured a .40kg/mm spring. More correctly, a spring that is
supposed to be .40, but is in fact .41!!
..obviously I missed something, but I don't know what.
Good job, Ryan!!
BTW#2 'OK Mr. CC! Take this quiz...'
My dictionary don't even have 1/2 those words in it!! Besides, I didn't say
I knew anything about it..I just copied and pasted!