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 The previous version was outdated and no longer supported.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

250 Auto 80 - 82

Bigbill said:
The 250 has 64.5mm stroke, the 430 has 74mm stroke. That's 10mm difference. That's 5mm more going up on top tdc. And 5mm lower that's BDC.
Click to expand...


FAKE NEWS !!!
The 250 -87 & 88 has 70.8 mm stroke. The 390-420 has a 71 mm stroke.
Anyway the 250 vs 430 has a 3.2 mm difference stroke, so it must be 1.6 mm up and
1.6 mm down.

250 wr 88.a.jpg430 AE 86.a..jpg
 
I use cylinder 16 11 790-01 (250 CR -81) instead of 16 11 772-01 (258)
The crankcase 16 11 828-01 (420 AE -81) instead of 16 19 820-01 and 16 19 819-01 (MC 258 left and right crankcase) for better gas flow..
Crankshaft 16 11 792-01 (MC 258) for correct stroke
The gearbox are 258 except for 1'st gear second axle 16 12 747-01 and first gear first axle 16 12 746-01 instead of the 258 1'st gear, second axle 16 12 723-01 and first gear first axle 16 12 704-01. With this I have another ratio as I believe is better when I have 250 CR spec.
 
I am very interested in this, I have a bottom end which I hope to graft a 250 top end too so will look forward to your progress Fabrice.:notworthy:
 
Note, I believe there is a difference in porting between the auto and standard trannys. Could the auto tranny hold up to the cr porting that has more power?

Isn't the length of the connecting rods all the same in the 70's early case between the 250, 360, 390, 420. Then the connecting rods changed in the newer case from '82 on in the 250, 430, till 88 I believe, the 500 is a different rod. The position of the crank pin hole changed to adjust the stroke.

Sorry for my other posts we went from 80/82 auto to 87/88 LC auto. Different beasts.
 
The flywheel weights are to calm down the hit.

I was told years ago when the auto tranny was raced by a pro rider here I believe it was Kevin Hines he had no problems, but he was on the gas all the time. It was the up and down constant shifting were it hammered itself apart. This kind of tells me the auto must be modified. There's a older racer in Stratford,ct who raced a 390 auto dirt track.
 
you are confused Bill. he is talking about FLYWIEGHTS in the auto transmission. NOT flywheel weights.
 
I saw that trike earlier in one of claudes posts. very cool. and my apologies to BIG BILL.
 
In Belgium there's 2 days but sold (250AE 81)
txim.jpg
 
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