rear shock spring rate?

the bike is a 1982 XC 250.anyone know the stock spring rate for the shock springs in this bike.it has ohlin piggy backs of course.the top shorter springs are about 90 mm long.looking for the spring rate for the short and the longer spring.thanks,dan

I'd like to qualify my answer first. I checked my springs (82,250XC) at work on a Tinius Olsen force tester. The accuracy is +/- 1% of full scale (1,200 pounds) so about 12 lbs either side, I'll mention our calibration guy says it is much closer than that.

Short spring is 180 lbs per inch spring rate. (3.22 kg/mm)
Long spring is 170 lbs, per inch spring rate. (3.04 kg/mm)
Combined rate is 87.4 lbs per inch rate. (1.56 kg/mm)
The change over between rates occurs at about 70% of stroke.
So..
You have 87 lbs per inch for the first 2/3's for shock travel then you change to the 170 lbs per inch spring rate when the small spring coil binds.

Regards
PC

From the 1982 250XC Husqvarna spec. sheet
Springs
Short 32N/mm
Long 27N/mm
Of course their were many optional springs you could get from Husky. My list shows seven optional long springs and four optional short springs. And below this list it also states "Additional springs are available from Ohlins through HP Racing.

To compare apples to apples this works out as:

32N/mm = 3.26kg/mm = 182.5 lbs per inch
27N/mm = 2.75kg/mm = 154.16 lbs per inch.

I'd say my long spring is different than what is listed as stock.

Regards,
PC