- Sat Feb 04, 2012 3:47 am
#293266
This is from a different forum, credits go to
Vankuen from
www.evolutionm.net
I was looking through the spring rate chart for various vendors, and thought this might be useful.
1lb = 0.45359237kg
1in = 25.4mm
.45359237 / 25.4 = .017857967322834645669291338582677
So now we know that 1lb/in = .017857967322834645669291338582677.
So if we want a spring that's roughly 560lbs; we'd multiply both sides by 560, and come up with roughly a 10k spring rate. Alternatively if you already know the kg/mm rate and want to find out what the lbs/in is, just divide the spring rate by that reaaally long factoral above (the .0178...).
But just in case you all didn't want to go through all that, here's a chart:
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
The spring rates you mentioned seems perfect for a DD, but a little too soft for track, just my opinion, 100 pounds is a big difference. I Auto-X and have 10k 5k rates.[/b]