• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

rear shock spring rate?

MotoXotica

MotoXotica

Husqvarna
AA Class
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.
 
tommie d;124242 said:
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.
Click to expand...

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
 
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