• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

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 The previous version was outdated and no longer supported.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

Radiator Fluid Expansion Reservoir for 449/511

Rearwheelin

Rearwheelin

Husqvarna
Pro Class
This is my radiator reservoir designed to catch hot fluid spit out from your radiators . When your bike cools it refills the radiators back up. During normal fluid expansion this system will store escaping fluid and hold it until your rads want it back ..... So run the rads full and they will stay that way :thumbsup: during major boil overs this system will help but might not refill rads to where they need to be..... This is just a mock up but same exact bracket as my breather can..
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oregonsage said:
Looks to me like that would siphon more coolant out if the tank got full......
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It won't siphon . The radiators only have a vent/overflow to plug into and siphoning won't work unless there is air that can freely come in to replace the fluid that is being gravity fed out of the rads . The can can be mounted any where on the bike and as long as there are no leaks in the hose and the radiator line stays under the coolant level the line will stay primed and fluid will be pulled back into the rads against gravity... Same concept as all radiator reservoirs on bikes. The DRZ and WR reservoirs are under the airbox , cfr x is between engine and skid plate I think...
 
oregonsage said:
Sure, but why vent it down instead of up. But Im no engineer....
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You can vent it strait up so it sprays all over your engine should you ever have a full blow boil over , most shut things down before stuff gets that hot. Does not matter where you vent as long as it's vented and doesn't burn you.
 
Xcuvator said:
If the tank gets full, it would mean there are much bigger problems than lost fluid.:)

I'm surprised the 449/511 don't come with and expansion tank.
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Me too ! It needs it bad. Unless you are fine with running with fluid levels just above the cooling fins , at thoughs fluid levels a small squirt of coolant hear and there starts compromizing your systems efficiency. The reservoir will let you run a higher level of coolant wich helps keep bubbles that get pulled into the fins to a minimum .
 
Rearwheelin said:
Me too ! It needs it bad. Unless you are fine with running with fluid levels just above the cooling fins , at thoughs fluid levels a small squirt of coolant hear and there starts compromizing your systems efficiency. The reservoir will let you run a higher level of coolant wich helps keep bubbles that get pulled into the fins to a minimum .
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I totally agree with you. I have seen the coolant level drop below the top of the fins after hours of technical climbing in hot weather.
Rearwheelin said:
Can you explain the vented cap part ?
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Just a vent hole, preferably baffled with a washer in the cap. That is how the expansion tanks are vented on many bikes, including my TE610 and TE450.

Don't get me wrong, I like the idea of a hose do direct the steam away from the bike. It can't siphon (you already know this) unless the hose goes below the level of the cap. The early automotive expansion tanks had vent hoses that vent down and the add on kits available today for vintage cars etc do too.:)
 
Xcuvator said:
I totally agree with you. I have seen the coolant level drop below the top of the fins after hours of technical climbing in hot weather.

Just a vent hole, preferably baffled with a washer in the cap. That is how the expansion tanks are vented on many bikes, including my TE610 and TE450.

Don't get me wrong, I like the idea of a hose do direct the steam away from the bike. It can't siphon (you already know this) unless the hose goes below the level of the cap.
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With my setup you would have to be at a really xtreme incline and the tank would need to be allmost full to push a couple drops , unless you were steaming I could see a 50% run out of the tank with the bike at a 90 degree angle :)
 
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