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 The previous version was outdated and no longer supported.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

Mikuni 38mm flatslide carb

Fran, if you send Kelly a PM or email he will get back to you (he may be away). I had to specify the diameters and O/A length of my original Mikuni. The new Lectron slipped in there smoother than a Kashmir barrow boys cod piece. Both my Lectrons have been a perfect fit. I won't use anything else now.
 
fran...k. said:
I have never had a bike with a lectron on it. I bought one at a NETRA auction thing at the awards night thing for $10 No one else bid and sold it for $10 a few years later and that must have been 15 years ago. I think it was a 36 mm one.

Since Motorsports doesn't seem intrested in answering, do they have one the right length for the dual shock set up? One to fit into the rubber parts for the 40/44mm round slide?
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if you can send measurements of total length, and the diameter of the spigots, lectron will machine the carb to fit to whatever bike so the stock boots can be used.
 
fran...k. said:
Right or wrong the extention of this logic is in the six or so years BMW owned Husqvarna motorcycles they chose to use something far inferior.
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Yes. They used mikuni for years and it is hard to jet and people replace them a lot. Zokes were sometimes not the best forks but they choose this too.
 
I'm going to purchase a hand held tach so I can adjust the balance screw for the best idle. It changes the guess work out where the best idle it. The pilot jet on the mikuni carb should be between 3/4 to 2 turns on the balance screw.

Jetting isn't hard once we follow the correct process. If the float level is set correctly. If the needle and seat doesn't leak.
We need to lower the idle as we adjust the balance screw. Once you do it right you will say that was easy.
 
fran...k. said:
Right or wrong the extention of this logic is in the six or so years BMW owned Husqvarna motorcycles they chose to use something far inferior. Was that Meo guy able to win his title with the stock carb? ( I know he had some impressive finishes on the two stroke huskies even if the title was on a four stroke, don't follow it that close)I know they didn't use the stock suspention just from examining pictures on the internet. USA Off road stuff.
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sometimes a smaller company isnt able to meet production requests or sometimes companies are in contracts. with that kind of mentality there would be zero aftermarket.
 
They will machine the carb to fit anything, but they have carbs ready in all the standard Mikuni and Keihin dimensions.
 
Bigbill said:
I'm going to purchase a hand held tach so I can adjust the balance screw for the best idle. It changes the guess work out where the best idle it. The pilot jet on the mikuni carb should be between 3/4 to 2 turns on the balance screw.

Jetting isn't hard once we follow the correct process. If the float level is set correctly. If the needle and seat doesn't leak.
We need to lower the idle as we adjust the balance screw. Once you do it right you will say that was easy.
Click to expand...
Setting the idle mixture screw I doubt is much of an issue, same as a volkswagen beetle before fuel injection or most anything else. Screw it in until it speeds up and then back it out some. Probably the frustration comes in that there are a few jets, I think 3 on the VM If i recall the idle or pilot one is somewhere around 35 to 45.

Whether the jetting is hard or not really depends on how easy it is to get the slide out without putting a bind on the throttle cable. Also how easy it is to change out the stuff you go in through the float bowl comes into play as with an airbox the amount I can rotate a carb is quite limited. Then comes the slide, oh my goodness those tmx slides from Husky were quite a lot and I think the pwk ones were at least a third of a complete carb. How can you really jet it right without a bunch of slides. With the vm a few parts bikes and you can have a selection even if you have to modify one. I am not the enthusiast about jetting as others but would suggest having a 2, 2.5 and possibly a 3 to experiment with on the 38mm round slide. One bike I twice have ended up with one smaller (one size, half a number) on the slide than in the specs. At least I ended up in the same place twice with that one.

I am sure I have had a lot of quality time using gasoline powered devices instead of fussing with the jets, and it is not only motorcycles with carburetors with needle in a hole and a slide either.
 
Installing the UFO on the bottom of the round slide does help clean up the throttle movement. The round slides on the bottom are very crude. The UFO cleans this up and improves the gas/air flow.
 
Bill's threads are generally a little scarce on pictures. This is from an Olympus 1.3 mega pixel camera that uses smart media. One could probably get into something like this off ebay for around $50. It re sets to 1999 if the batteries are removed.

In hind sight I probably should just have extended the airbox side of a good mono shock 40 mm instead of going to the trouble I did. That a number of years. This thread got me paying attention and it seems the 360 stayed with the tm while the 125 and 250 got the tmx. The one I modified supposedly came from a 2002, I got the triple clamps and front brake assembly as well. I found a 1999 parts sheet and it sure is the case in that year.
5.micuni.carbs..JPG


Here we have, right to left as I call them 40mm dual shock,single shock,38mm dual shock,single shock, and a vm micuni that came on a 360 I mentioned prior. After I took the pictures and making measurements it looks like the 38mm mono shock one has had about a tenth of an inch trimmed off the air box end. I found some other carbs these were most likely to stock my jet, needle, float, etc and slide traveling container.

micuni.tm.carb.a.JPG


I suppose this is what the thread title is about, this one does have a bit smaller bore than the round slides pictured.

micuni.tm.carb.b.JPG


OK the part that slides in the sides is flat but there is a cylindrical portion kind of fused to it. There is a definite weight saving here and a no tool needed idle speed adjustment.

modified.tm.carb.a.JPG


There it is my creation, It has become rather problematic to start, initially I just got the biggest jet I think a 50 on the 2002 parts sheet and just put my main jet from the 40mm one in. I did get it going today and even could start it on the bike with the left leg when I tried.

modified.tm.carb.b.JPG


modified.tm.carb.c.JPG

Poor dog was traumatized with me kicking it, (fumes in the exhaust lit off every 20 kicks or so) I guess it is a bit different than a modern 125, relatively modern anyway. It worked fine, at least for the bone pile/rock garden I have here to ride around in/on. Even the pwk I have on an 88 430 I wonder if the starting circuit when you pull the knob up needs tuned for these big bikes.
 
Ill take out my flat side carb and look closer at it.

Does the mikuni 38mm round slide carb jets fit my flat side 38 mm carb?
I have every size jets for the round slides, probably 2 or 3 of each jet.
 
The main jet is the same, I doubt the main would be the one to frustrate a person if they are "hard to jet". Of note is the slide goes in and out easier than the round slide. I mean how easy it is to put the slide/needle assembly back with the carb on the bike but it does use screws to hold the top on.


Edit, why add a post and bring it up to the top.
While looking for some sprockets I think I found the flat slide carburetor that came on the 1976 or so 360 hillclimber and it matches what I see for 240 and 250 in 1986 parts sheet. This one really has a flat slide, sure looks like it has needle jets, quite possibly the same as the round slide one. I took it off for a variety of reasons one was to use the carb I entered a bunch of events with.

early.flat.slide.a.JPG


I noticed I have spaces in the directory structure I posted yesterday if there is a problem seeing them please notify.


early.flat.slide.b.JPG
 
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