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 The previous version was outdated and no longer supported.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

Husky 2t dual sport bike coming?

Colo moto said:
This article isn't exactly about 2 stroke dirt bikes, but is about air cooled vs water cooled aircraft engines. Different application, but all the same principles apply. Pretty short, and some good info.

http://www.liquidcooledairpower.com/lc-ridofheat.shtml

This one isn't about air cooled dirt bikes either, but about detonation in air cooled 2 stroke engines. It offers some insight into what could be one reason every performance engine today is water cooled.

http://klemmvintage.com/deto.htm
Click to expand...

there is a reason almost every modern engine is water cooled...

"Water (or water and antifreeze) offers 1000 times greater thermal conductivity than air and it can be routed much more closely to high temperature areas such as the exhaust valve seat and guide."


"Unlike air, the flow of water through a liquid cooled cylinder head can be manipulated much more easily. The flow pattern, rate, temperature and pressure can all be adjusted in order to provide maximum cooling effectiveness without increasing the surface area of the cylinder head or walls. Suddenly it becomes possible to start increasing the power per cubic inch without any detrimental thermal effects on the cylinder head and valve train. When water cooling is compared to air-cooling this effect is almost magical in that it solves a myriad of thermally related problems all of which have a positive effect on the reliability of the components used in the top end of the cylinder head including the cylinder head itself.
"
 
Motosportz said:
there is a reason almost every modern engine is water cooled...I know when I started entering vents there were a lot of those kdx 200 bikes but the water cooled ones and they were amazingly quiet. I have seen elsewhere those 86-88 ones but never paid attention to them. Nice seats on those kdx bikes pictured in this thread.

"Water (or water and antifreeze) offers 1000 times greater thermal conductivity than air and it can be routed much more closely to high temperature areas such as the exhaust valve seat and guide."
while I won't argue with this statement the conduction is in the aluminum and the heat leaves the aluminum (air cooled fins) mostly via radiation. Remember conduction, convection, radiation. Kind of same thing if you talk thermal storage, water stores heat real well but there is a lot more mass of aluminum fins than water. It has been so long since I took any physics I don't recall the formulas but I world think the radiation formula works off a cubed or higher of the temp above absolute zero. And how close to the exhaust passage of a power valved two stroke is the water anyway?



"Unlike air, the flow of water through a liquid cooled cylinder head can be manipulated much more easily. The flow pattern, rate, temperature and pressure can all be adjusted in order to provide maximum cooling effectiveness without increasing the surface area of the cylinder head or walls. Suddenly it becomes possible to start increasing the power per cubic inch without any detrimental thermal effects on the cylinder head and valve train. When water cooling is compared to air-cooling this effect is almost magical in that it solves a myriad of thermally related problems all of which have a positive effect on the reliability of the components used in the top end of the cylinder head including the cylinder head itself.
My problem is the reliability of the exhaust pipe and problems on the husky 125 class machine when that pipe is forced back into the hoses going into the water pump housing. The majority of folks here might have problems melting the top end. I seem to hit two to three inch trees/saplings pretty much in the area a clutch cable adjuster would be. Sometimes they stop the bike sometimes they deform and the pipe gets smashed. I was thinking earlier today since the new 125 bikes come with a spare top end to make a 150 one could remove the water jacket and weld on pure aluminum (better conductivity than cast) fins, relocate the exhaust to be like the 1982 models, in the center and under the tank but I have other projects.

"
Click to expand...

I don't mean to be argumentative just pointing a different way to look at things.
 
Ryan said:
In the first part of your reply, you basically made my point. Better bearings, better metal, better chains, better lube, better cylinders...BETTER!!! Its common sense stuff not worth arguing against. Hey, I think vintage bikes are cool as hell and I was raised on stories of old huskys and their riders. Its what got me into the brand. However, if you truly believe that your modern husky wouldn't "survive" a race back in '82, you are the one that needs to wake up.
Click to expand...
You weren't there so how could you know ? I believe I have already pointed out that NO watercooled bikes finished the 1982 ISDE in Czecho. You have to understand why watercooling came about in the first place . I didn't say I wanted to go back to short travel bikes with Piston Port engines , small clutches and points. I do believe that aircooled bikes can be just as competitive as a watercooled bike.
 
I think the bottomline is whoever (Husky or KTM) brings a direct inject 2t to market first will be the sales winner.
 
Suamico SD said:
I think the bottomline is whoever (Husky or KTM) brings a direct inject 2t to market first will be the sales winner.
Click to expand...

While I wish to believe that too many more will wait for the KTM because husky is still a small obscure company to most.
 
well I would definately plunk down the $$$ to get one of these. Too bad we had to wade thru 5 pages of 'back in the day' off topic ranting to get a few scraps of details on the bike the thread was about. (And I most surely 'was there' back in the day, no real desire to hop in my Delorean and go back there, foregoing all the new iron. Ebay is there for those who wish to).
 
Suamico SD said:
I think the bottomline is whoever (Husky or KTM) brings a direct inject 2t to market first will be the sales winner.
Click to expand...
If it is done well, yes, I think so too.

Personally I would love to have a super light trail bike, preferably with a license plate, in addition to my 2006 TE250. We need another bike and do not want it to be too heavy.
 
Would be kind of cool if it was a trail/trials like the Ossa explorer or KTM 350 freeride.

More importantly, if they are such clean burners will be able to call them "2 smokes"?
 
Suamico SD said:
More importantly, if they are such clean burners will be able to call them "2 smokes"?
Click to expand...

Good question ... yep, I think the name will stay ...

Suamico SD said:
I think the bottomline is whoever (Husky or KTM) brings a direct inject 2t to market first will be the sales winner.
Click to expand...

ESP in the case of Husky needing market share and riders to just try their bikes .... A DI 2T can attract riders due to it's own merit alone ... Husky can ride this wave ...
 
I am dumb on the topic. What is a quick rundown to advantages of a DI two stroke (besides dealing with jetting)?
 
I am not an expert and Im sure I will be corrected, however the benifit of the direct inject is the fuel is introduced in a way that it is more consistant fuel mix and much cleaner burning. That on top of all the usual FI benefits like adj maps for terain, weather , elevation etc.
 
They have mentioned a Husky street legal 2 stroke in 2014 in almost every motorcycle mag I have picked up this month. I can't wait to see the 2014 stuff and have a feeling the 2T revamp is going to lead a Husqvarna marketing blitz!
 
So just for the sake of argument. If and when Husky decides to bring this bike to market what will it offer in terms of transmission, weight, fuel capacity...
The current TE310 is claimed to weigh 247 Lbs, and the WR300 comes in at 230 Lbs. I would hope a six speed with a wider ratio, a three gallon fuel tank, and the weight around 240-250 Lbs. You lose the extra weight of the four stroke cylinder head, but add the unknown of the DI components. I would think that it could be brought in for at least the same (weight wise) as the TE310.
 
TrailPunter said:
You lose the extra weight of the four stroke cylinder head, but add the unknown of the DI components. I would think that it could be brought in for at least the same (weight wise) as the TE310.
Click to expand...

Don't forget that you're swapping the DI hardware in and taking out the carb. So it's not all added weight by any means.

I just hope they make them with user friendly seat heights (unlike all the current 2Ts which are the tallest bikes Husky makes, even though there's plenty of room to make it lower without changing the suspension OR ground clearance).
 
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