• 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 The previous version was outdated and no longer supported.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!

1979 250WR Fork oil

Richard Colahan

Richard Colahan

Husqvarna
AA Class
Good day...
I'm doing a pre-season service on a friend's 1979 250WR.
Vintage Hare scrambles...mud, roots, rocks, low speed.
Novice rider, maybe 240 lbs...big fellow!

Looking for recommendation on fork oil height...inches from top of tube, springs out, fully compressed. New seals.
On my 125WR's Betors, etc...usually ~ 6 1/2 "
Is that about right?
Oil weight?
Does anyone ever put a few lbs of air in via the cap valves?
Or just bleed air out?

thanks for any advice.
 
FRONT FORCKS 35 MM WR
270/280 ml oil / 20 W/15 w
Not air
FRONT FORCKS 40 MM WR
430 ml oil 20/15 w
not air
FRONT FORCKS BETOR WR/CR
220/250 ml oil 10/15 W
 
These are 35mm, ~ 9 1/2" travel
I put ~ 290cc in each leg....fully compressed still ~ 11" space from oil to top of fork leg.
That seems like alot to me...but I'm more used to 7" travel forks like Betors, Cerianni, Honda XL250.
On those I set oil height between 6.5 and 7"

Anyone?
 
Racetech has fork oil level recommendations... I could not find a 79 250WR in the Digital product search but they did have a 79 250CR. They show the level at 130mm... keep in mind that this spec might be for use with their emulators only and the WR could be different forks... but they do show the level at 130mm for the 250CR forks back to 1975... again probably with the assumption you're using emulators?

You could try calling them... they have always been helpful when I've talked to them. They also have replacement piston rings if your forks need them.

http://www.racetech.com/page/title/Husky Forks-Vintage

.
 
There is certainly a big difference in CR fork length from 1975 to 1979 yet RaceTech shows a level of 130mm for all.

I think that's the beauty of the "fork oil height" method... oil level is measured with springs out and fork completely collapsed.

If you measured the oil needed, shorter forks will need less oil than longer forks to get to the same 130mm level so this "oil level with fork compressed and no spring" method is more universal than the old "drain forks and add 7.6 ounces of oil" method...
 
I flipped a coin and set it at 7" fully compressed.
Easy enough to add just a bit if needed.

Thanks to all for the advice.
 
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