spring rates
10-03-2007, 03:45 PM
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spring rates
hey im getting ready to order some coils with custom rates but i have to order them in pounds. i want to know if anyone knows how to put 11k and 9k, and 10k and 8k in pounds.
thanks for any help. my setup is going to be koni yellows with GC custom rated coil sleeves and top hats.
thanks for any help. my setup is going to be koni yellows with GC custom rated coil sleeves and top hats.
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10-03-2007, 11:49 PM
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Re: spring rates (93egB16A)
k is the names used for the spring constant in hooke's law. You could play around with trying to convert it, but you have to know what units it's already defined in.
If you assume that the k values are newtons per millimeter then:
11N/mm = 62.8 lbf/inch
10N/mm = 57.1 lbf/inch
9N/mm = 51.4 lbf/inch
8N/mm = 45.6 lbf/inch
I have no idea if those are reasonable spring rates. They sound rather low to me. If you assume instead that the k values are kgf (kilograms-force = 9.8N) per mm then
11Kgf/mm = 616.5 lbf/inch
10Kgf/mm = 559.6 lbf/inch
9Kgf/mm = 503.6 lbf/inch
8Kgf/mm = 447.6 lbf/inch
Those sound a bit high, but again, I have no idea what a reasonable spring rate is.
If I were you, I'd call up whoever you're buying the springs from and have them figure it out for you. They're more likely to know exactly what's up with the numbers you have.
If you assume that the k values are newtons per millimeter then:
11N/mm = 62.8 lbf/inch
10N/mm = 57.1 lbf/inch
9N/mm = 51.4 lbf/inch
8N/mm = 45.6 lbf/inch
I have no idea if those are reasonable spring rates. They sound rather low to me. If you assume instead that the k values are kgf (kilograms-force = 9.8N) per mm then
11Kgf/mm = 616.5 lbf/inch
10Kgf/mm = 559.6 lbf/inch
9Kgf/mm = 503.6 lbf/inch
8Kgf/mm = 447.6 lbf/inch
Those sound a bit high, but again, I have no idea what a reasonable spring rate is.
If I were you, I'd call up whoever you're buying the springs from and have them figure it out for you. They're more likely to know exactly what's up with the numbers you have.
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