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 The previous version was outdated and no longer supported.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

126,875mph. Stock Production 1983 500XC

suprize said:
don't forget not many baja, finke and salt bikes are stock gearing... they are usually 1up on the front if not less on the back as well.

the 400 will out run a 450 fourbanger no stress and match a 500.
Click to expand...
the 400/430 are great and pull a long ways thanks to the powerband and gearbox. they do not however "match" a swede 500. thats a different beast.
 
2012 Kalahari Desert Speedweek was run on a dry lakebed.
I entered the bike with WR gearing which is 33/76 primary and 17/48 sprockets.
Knobbly reached 164kph and proved unstable.
Roadsport had less diameter and ran 166kph.
Negate "tyre slippage" on a 53hp machine. This only occurs with big hp.
Engine was screaming at well beyond what is healthy for it.
2016 was run on slightly inclined aircraft runway.
XC primary is 39/70, no other dirtbike in existence offers this tall gearing potential.
Sprockets 14/48.
Top speed was easily reached in less than 700m and i just shrieked onwards to the kilometre trap.
Rpm was recorded at 7900, which is 1500 beyond max power and well into the dropoff of powercurve. I have not dynoed this engine but it certainly makes more than the previous.

2017 will see me concentrating on 1km runs with taller sprocketing to cross traps at 6500rpm.
400m drags would be a completely different setup alltogether.
My point is 500cc stock production (yes a great deal of time into blueprinting), aircooled.
I have developed a 500 lc but due to pipe and reedvalve setup it cant run as stock. In development phase this engine has a lot more power and potential than aircooled Husky.
 
husqyhamm said:
2012 Kalahari Desert Speedweek was run on a dry lakebed.
I entered the bike with WR gearing which is 33/76 primary and 17/48 sprockets.
Knobbly reached 164kph and proved unstable.
Roadsport had less diameter and ran 166kph.
Negate "tyre slippage" on a 53hp machine. This only occurs with big hp.
Engine was screaming at well beyond what is healthy for it.
2016 was run on slightly inclined aircraft runway.
XC primary is 39/70, no other dirtbike in existence offers this tall gearing potential.
Sprockets 14/48.
Top speed was easily reached in less than 700m and i just shrieked onwards to the kilometre trap.
Rpm was recorded at 7900, which is 1500 beyond max power and well into the dropoff of powercurve. I have not dynoed this engine but it certainly makes more than the previous.

2017 will see me concentrating on 1km runs with taller sprocketing to cross traps at 6500rpm.
400m drags would be a completely different setup alltogether.
My point is 500cc stock production (yes a great deal of time into blueprinting), aircooled.
I have developed a 500 lc but due to pipe and reedvalve setup it cant run as stock. In development phase this engine has a lot more power and potential than aircooled Husky.
Click to expand...

164kph is about 102 mph.
This thread was started on Oct 15 , proof of your original 126,875 mph claim ?
 
GaryM said:
Hey were you ever able to find the ultimate lower end seal. You mentioned to me on testing you found the husky main seals were not the best for sealing

please let us know.
Click to expand...

Yes Gary M, i sourced 2 sets of seals from a bearing supplier and tested to 15psi. They are of a higher rating than the viton type.
 
The cr500 husky uses the 39/70 primary.

We drag raced a lot of bikes. The ported 81 cr250 beat newer kawies kx 125/250's they couldn't touch the 250. My '86 400 cross country beat a 250 KDX bad. We clocked the kx's top end at 85mph. Against a streetbike. The 400 walked all over it.

I never thought of the option of playing with the primary gear ratio and the tranny cr & wr ratios for the optimum ratio for top end speed.
 
At that rpm your up over 4500 fpm for mean piston speed . I thought 4000 general regarded as the upper limit ? I'm not trying to argue just curious as I'll never be in your situation
 
Bigbill said:
The cr500 husky uses the 39/70 primary.

We drag raced a lot of bikes. The ported 81 cr250 beat newer kawies kx 125/250's they couldn't touch the 250. My '86 400 cross country beat a 250 KDX bad. We clocked the kx's top end at 85mph. Against a streetbike. The 400 walked all over it.

I never thought of the option of playing with the primary gear ratio and the tranny cr & wr ratios for the optimum ratio for top end speed.
Click to expand...
Bill Ive done all of that on th 4 and 6spd trannys, and can advise. Never had a 5Spd to play with and for 1/4 miles it would be my 1st choice.
 
silverstreakNZ said:
At that rpm your up over 4500 fpm for mean piston speed . I thought 4000 general regarded as the upper limit ? I'm not trying to argue just curious as I'll never be in your situation
Click to expand...
Streak, im well aware of piston velocity. With a 400 odd gramme slug at such rpm the smallend bearings dont like the stress and i replace regularly. Eventually the bigends also go beyond tolerance.
My pistons are prepared for additional lubrication. Premix is 20:1 to 25:1 and i use a full synthetic oil for microlights. The viscosity is way thicker than other top brand oils. Normal 93 or 95 pumpgas. 50:1 mixes and fuel additives are bs.
Piston to cylinder clearance and squish are also increased.

Ultimately i want to cross the traps lugging at 6500 rpm.
 
Go by the maxima chart with oil ratio. Drag racing at a higher steady rpm requires 20-:1. The mix thins out at a steady rpm. Don't ask me how I know.

There's a example to go by. The pro mods/ drag race cars are using the two speed power glides over the 400th auto tranny. There's so much horse power you want to get thru the gears to get it to the last gear to pour it on quickly. Now to me when I drag raced my shifting was at maximum rpm/power was 6,700 rpm on the big block Chevy. Shift at 6,700rpm and go thru the traps at 6,700 rpm. That's as fast as she's going to go once dialed in. I forgot to turn on the e fuel pump and shifted at 3,500rpm she would rev up. I ran 12.85et 1/4 mile. That's another story stupid me. A good day but a bad day too.

I'm thinking drag racing a motorcycle would be the same theory. I just purchased a tach from eBay $10. Just for ha, ha's.
I'd like to drag race a built dirtbike. Motard rims and tire balanced. I know my Italian husky 250wr ran in the 12 second 1/4 mile or better. She flew stock.

When I raced husky chainsaws at the local fairs speed cutting some guys were using aviation fuel with 100:1 optimal. I ran high test pump gas with husky oil. Plugged governors, larger driving sprocket. Rakers at
.060" on the chain. For pine I went .080". One mean 100cc saw. At 50:1 mix.
 
justintendo said:
the 400/430 are great and pull a long ways thanks to the powerband and gearbox. they do not however "match" a swede 500. thats a different beast.
Click to expand...

I was playing with a Honda 600cbr on the street with my stock gearing on my husky 98/250wr. I pulled him of the light, wheelies and was ahead when he let off as I was beating him. He didn't want to lose but he would of beat me as we went faster but I didn't tell him that.

Talking and comparing the 390, 430, 500 we have different strokes and from a higher rpm (smaller bore) to the lower rpm but more torque with the bigger bores. It's like comparing a Chevy 283, 327 to a 350. Throw a roller cam in a 283 she's going above 10k rpm. She's all rpm. Now how fast can we get the rear wheel turning. Ratios.? A cr tranny will keep the rpms up. But a or tranny might be better?
 
I was using motorex full synth at 100:1 in my wr 400 for some time with no dramas. I should qualify, I DONT recommend these ratios in a/c bikes. I use the castor 727 at 40:1 now as the kato shop folded:(.
 
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