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 The previous version was outdated and no longer supported.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

1988 400WR?

go up one on the front sprocket, that will tame it a bit and you should be able to do a genuine 100 miles an hour in top gear!
 
whats your gearing currently? the pipe is likely producing some of the effect, as the uptite is supposed to increase power.
are you still running the mini 6 motoplat? i would imagine too much response from using the aftermarket internal rotors ive seen used
 
justintendo said:
whats your gearing currently? the pipe is likely producing some of the effect, as the uptite is supposed to increase power.
are you still running the mini 6 motoplat? i would imagine too much response from using the aftermarket internal rotors ive seen used
Click to expand...


Just from a quick look, it appears to be 13/52, what is the max size front sprocket that can be fitted? Tonight I will have a proper look with the sprocket cover off.
 
ajcmbrown said:
Just from a quick look, it appears to be 13/52, what is the max size front sprocket that can be fitted? Tonight I will have a proper look with the sprocket cover off.
Click to expand...
if so, then yes that would be a bit responsive. nothing insane, tho. i run 14/52 for mostly woods and medium speed stuff on my 430. a 14 will last longer and probably make your chain last longer as well..for the 430 i dislike going taller than 14/52 as its geared too tall in 1st and 2nd for woods work imo...i dislike a ton of clutching...
 
This is quite brutal in its initial snap, then seems to sign off a bit. After the initial hit, it feels like my previous 400WR, smooth and linear.
Just as a bit of background, I have owned many big bore two strokes and four strokes over the years, but none that had a delivery like this.

I probably sound like I think it's unmanageable, it's not. It just isn't the enduro motor that I remember. I have not had the barrel off, so there could be some "mods" to the porting that are not ideal, I'll have a better idea once the OEM exhaust goes on. If what I'm experiencing is the effect of the Uptite pipe, then maybe I need to adapt to it, or just use the OEM pipe.
Maybe I'm just getting old?
Tony.
 
justintendo said:
whats your gearing currently? the pipe is likely producing some of the effect, as the uptite is supposed to increase power.
are you still running the mini 6 motoplat? i would imagine too much response from using the aftermarket internal rotors ive seen used
Click to expand...


Mine still has the external rotor SEM ignition, so plenty of flywheel weight there.
 
ajcmbrown said:
Well I have now ridden this bike for a total of about an hour, I am using the Uptite pipe and it goes great! Maybe even a little too well, it has a major bottom end to midrange hit that takes some getting used to.
My '86 wasn't like this from memory, it was much more linear in it's power delivery, this is a little bit like a light switch, it just hits and goes, it does taper off as the revs climb but it is still accelerating at a fairly good rate of knots.
Is this the effect of the pipe? Or should I be looking at jetting and needle height to smooth this old girl out!
Ignition is set at 1.8mm btdc, with no kickbacks so far, the carb is stock, the only "mod" other than the pipe is the muffler, the PO cut it shorter by approximately three inches from what I can tell, was this a common mod or is it more of a repair?
Sorry for all the questions, it has just taken me by surprise a little. I'm unsure if this is a good thing or I will need to compensate for the sudden hit.
Tony.
Click to expand...
Could be the pipe or Surprize's mate could have tidy'd up the ports a little.:D

My 400 has a linear power delivery with no Surprizes.:D
 
ajcmbrown said:
This is quite brutal in its initial snap, then seems to sign off a bit. After the initial hit, it feels like my previous 400WR, smooth and linear.
Just as a bit of background, I have owned many big bore two strokes and four strokes over the years, but none that had a delivery like this.

I probably sound like I think it's unmanageable, it's not. It just isn't the enduro motor that I remember. I have not had the barrel off, so there could be some "mods" to the porting that are not ideal, I'll have a better idea once the OEM exhaust goes on. If what I'm experiencing is the effect of the Uptite pipe, then maybe I need to adapt to it, or just use the OEM pipe.
Maybe I'm just getting old?
Tony.
Click to expand...
likely a combination of the 13 gear and the pipe, making it a bit abrupt. at least the swede has the super slow gunnar gasser throttle.
 
ajcmbrown said:
Just from a quick look, it appears to be 13/52, what is the max size front sprocket that can be fitted? Tonight I will have a proper look with the sprocket cover off.
Click to expand...


I run a 14/52 or 15/52 depending on the ride obviously 15/52 in more open areas
with all the torque you should be up a gear anyway
to answer the question a 17 tooth will fit
 
13 is too low, and will be jumpy. min 14 tooth front will tame it down a tad, and 15 if you barely use first. its a well spread gearbox and you can mix those front sprockets for a wide range of riding. that mid range hit will be a blessing with a 14 / 15 combo
 
I just saw that picky of "Le Camel" at the Echuca dustbowl Vinduro last year.

The highlight being when my esky fell out the back of the ute on the way home and ol mate picked it up. he was seriously annoyed that he didn't find the 3 stubbies that were inside it. he only saw the margarine and the cheese and snags so he left them on the side of the road...:rolleyes:
 
I had a proper look and it is 13/52 gearing, may have to get a 14 and 15 just to cover most conditions.
I think a 15 would be great as you say, and it has the grunt to pull higher gearing.
 
ajcmbrown said:
Just from a quick look, it appears to be 13/52, what is the max size front sprocket that can be fitted? Tonight I will have a proper look with the sprocket cover off.
Click to expand...
For the spline on your bike I have from 10 to 16 tooth and there may be a 17 in the book. Not sure what one could actually get at this point. This is one thing these bikes have over the modern ones though it must come at the price of having the output shaft farther from the swingarm pivot.
 
You must log in or register to reply here.
Back
Top