Spring Rates - kg/mm to pounds
02-08-2012, 08:24 AM
#1
Spring Rates - kg/mm to pounds
I have a set of Skunk2 basic coilovers on my 89 Civic hatch which the website says are 8kg/mm front and 6kg/mm rear. Although I like the stiffness, I want a little less for my 93 Del Sol and am going to get a GC/Koni combo from a sponsor here.
I tried converting KG to pounds on the WEB but 8kg = 17.63 pounds and need to know how to include the 'mm' portion into the formula since this is obviously not the correct number.
Thanks!
I tried converting KG to pounds on the WEB but 8kg = 17.63 pounds and need to know how to include the 'mm' portion into the formula since this is obviously not the correct number.
Thanks!
02-08-2012, 09:08 AM
#2
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Re: Spring Rates - kg/mm to pounds
to do kg/mm to in/lb just take the spring rate (in kg/mm) and multiply it by 55.88!
so your 8kg/mm springs are 447.04 lbs/in. i assumed theres 2.2lbs in 1kg and 2.54cm in 1in (not 100% accurate but pretty close)
Xkg * (2.2lbs / 1kg) = (your springs in kg)*2.2lbs
1mm * (1cm / 10mm) * (1in / 2.54cm) = 1/25.4 in
so lbs/in = 2.2 / (1/25.4) = 55.88
edit: so to convert from lb/in to kg/mm just divide by 55.88
so your 8kg/mm springs are 447.04 lbs/in. i assumed theres 2.2lbs in 1kg and 2.54cm in 1in (not 100% accurate but pretty close)
Xkg * (2.2lbs / 1kg) = (your springs in kg)*2.2lbs
1mm * (1cm / 10mm) * (1in / 2.54cm) = 1/25.4 in
so lbs/in = 2.2 / (1/25.4) = 55.88
edit: so to convert from lb/in to kg/mm just divide by 55.88
02-08-2012, 09:29 AM
#3
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Re: Spring Rates - kg/mm to pounds
6k=350lbs 8k is about 450lbs, 10k=550, and so forth.
Easy way to do it is multiply the K number by 56. 8x56=448lbs.
Easy way to do it is multiply the K number by 56. 8x56=448lbs.
02-09-2012, 03:05 AM
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Re: Spring Rates - kg/mm to pounds
Originally Posted by Libertariat
here's a conversion table for Kg/mm to LB/in
kg/mm to lbs/in
-----------------------------
16 = 896
15 = 840
14 = 784
13 = 728
12 = 672
11 = 616
10 = 560
9.0 = 504
8.5 = 476
8.0 = 448
7.5 = 420
7.0 = 392
6.5 = 364
6.0 = 336
5.5 = 308
5.0 = 280
4.5 = 252
4.0 = 224
3.0 = 168
2.0 = 112
kg/mm to lbs/in
-----------------------------
16 = 896
15 = 840
14 = 784
13 = 728
12 = 672
11 = 616
10 = 560
9.0 = 504
8.5 = 476
8.0 = 448
7.5 = 420
7.0 = 392
6.5 = 364
6.0 = 336
5.5 = 308
5.0 = 280
4.5 = 252
4.0 = 224
3.0 = 168
2.0 = 112
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