Spring Rates

[Colin]

Hi,
Anyone know the right spring rates for a NR4 and a NR2 on a 4000 or a 5500 if they are expressed in lb's per inch?

(I might be buying a 3rd party supplier spring and I'm not sure which weight to buy)

I weigh about 200lb and do XC mainly.

from the K2 site "spring chart" I've got the following:
Rider Weight (lbs) Spring Rate Part Number(s)  
up to 140    350/400  (350 - SM) NB175-350X
130-170      500          (MD) NB175-500X
160-200      550          (LG) NB175-550X
190-230      600          (WB) NB175-600X
230 +         650                  NB175-650X

Is the second column, the "lb's per inch" rating?

also crosslinks - the same question
up to 140   175         NB2L-175X
130-170     200         NB2L-200X
160-200     200        NB2L-200X
190-230     225        NB2L-225X
230 +         250        NB2L-250X

Thanks
Col.

[Simon]

My understanding is the NB175 stands for the stroke eg 1 3/4" (to fit a shock with a 1 3/4" stroke) no good fitting this spring to a 2" stroke shock as the coils would bind and eventually lead to spring failure,and the other number, eg 400 stands for 400lbs per square inch
NB2 stands for 2" stroke
The X at the end is a prefix indicating if there is a part number with a B =black R=red Y=yellow, I find the chart confusing in that application
From the chart you require (I believe you have an Oz)
Rear NB2-550B (2"STROKE 550LBs)
Front NB2L-200X (2"STROKE 200LBs) assuming you have a crosslink CS,C,ELT,EXP
Hope I'm correct but thats how I understand it,others may have there own interpretation.
Simon.  

[kiwi]

yes the second column is pounds per inch [smiley=groucho.gif] [smiley=nod.gif] [smiley=beer.gif]

[james]

hi colin i have a yellow 550lbs spring you can have , if you are in milton keynes i am only just up the road in leicester, drop me a mail if your interested