I can no longer find that thread where it tells you how to read the spring rates etched on the Eibach spring on the GC set.

Can anybody link me or give me a quick crash course on how to read them.

Thanks.

 

the springs are printed with: free height X inner diameter X spring rate, in either metric measurements or english. English stats would look like 0700.250.600 -- a 7" free height, 2.5" ID spring with a 600 lb/in rate for example

the spring rate will be given in either lb/in or kg/mm. to convert kg/mm to lb/in, multiply by 55.6. to convert the inverse, divide by 55.6

 

mind says GC200.64.58

 

How do I tell what my spring rates are?
Ground Control sells Eibach Race Springs (ERS) which are labelled by 3 different values in the following convention: length . diameter . spring rate. However, ERS will come labelled in either Metric (mm.mm.N/m) or English (inchx100.inchx100.lbs/inch) units. 180.64.61 is the same thing as 700.250.350. The conversion from Metric to English is (/.254, /.254, x5.7) "/" means "divide by", "x" means "multiply by".

If you ordered a Ground Control kit without specifying custom rates, they will choose an appropriate spring rate for your vehicle. For the CRX, it is 350f/250r.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Voyage34 &raquo;</TD></TR><TR><TD CLASS="quote">
the spring rate will be given in either lb/in or kg/mm. to convert kg/mm to lb/in, multiply by 55.6. to convert the inverse, divide by 55.6</TD></TR></TABLE>

the conversion kg/mm to lbs/inch is just 56.0, not 55.6.

and eibach doesnt use kg/mm.

 

Thanks for the input. big info guys thanks!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIC_jdm_da9 &raquo;</TD></TR><TR><TD CLASS="quote">mind says GC200.64.58</TD></TR></TABLE>

That's the same as 800.250.325 in English units.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">the conversion kg/mm to lbs/inch is just 56.0, not 55.6.
and eibach doesnt use kg/mm.</TD></TR></TABLE>my bad, i just did the calculations and got 55.997~56 instead of using a number i saw online long-*** time ago

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIC_jdm_da9 &raquo;</TD></TR><TR><TD CLASS="quote">mind says GC200.64.58</TD></TR></TABLE> but it seems they do stamp metric rates as well

 

thats Newtons/meter. not kg/mm.