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 The previous version was outdated and no longer supported.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

Husqvarna WR250 2 stroke concept

KTM also moved the crank up on the new SX65

65_sx_persp_2.jpg


65_sx.jpg


Just like Husaberg did.

Believe me I'm not a KTM lover, but it looks like a whole movement on their part.
 
BlipBlip!;21252 said:
There's a belief out there that by moving the crankshaft up and between the two axles as Husaberg did... you create a gyroscopic inertia effect that produces a very light feeling machine while the engine is spinning.

If that is true could you imagine the benefit a 2-stroke might gain from doing the same thing?
Click to expand...
the intention with the 'berg engine was to put the crankshaft closer to the centre of gravity of the bike, and closer to the green axle:
3ca62dc5.jpg


on a two-stroke it will not make such a big difference because a two-stroke crankshaft has a lower inertia/weight. also, a layout like this would move the exhaust to an even more exposed position.

Actually if you look at the new 2009 KTM 50SX engine you'll see that they too moved the crank up higher in the engine for that same reason.
Click to expand...
this was not an intention on the 50cc engine (even though it looks like that in your nice illustration).

BlipBlip!;21398 said:
KTM also moved the crank up on the new SX65
Click to expand...
on the 65cc engine, the intention for the engine layout was to optimize the intake tract.

Motosportz;21318 said:
And for the 2009 KTM 50SX I don't know if that is intentional on that bike for that reason as there is a TON of ways to loose weight on that bike with aluminum and upside down forks etc, but in that class spending big $$$ on exotic engine packages :excuseme:
Click to expand...
these bike have a minimum weight rule, and they are already at the minimum weight.

r
 
rasputin;21988 said:
the intention with the 'berg engine was to put the crankshaft closer to the centre of gravity of the bike, and closer to the green axle:

3ca62dc5.jpg


on a two-stroke it will not make such a big difference because a two-stroke crankshaft has a lower inertia/weight. also, a layout like this would move the exhaust to an even more exposed position.
Click to expand...

Rasputin,

I would have never in a thousant years thought of that.

Again, thanks for answering those questions.

Enquiring minds want to know!

BlipBlip/HuskyRips:thumbsup:
 
Thanks Blip for the info on the pre mixers. Did you get a load of the Maico breako? They're back. Looks somewhat old technology (engine cradling in frame) but some good components. The 500 2 stroke looks like a CR250 from the seat back.
 
If I was going to pick-up a Maico, I'd want something mid 70s to very early 80s. Always liked the look of the 1976/77 MAICO AW250

patelski_maico-2.jpg
 
I raced a '78 450 and a '79 250. Only difference with it than your '77 is a rounded off tank and up-pipe but same wrap on the rear fender with the '78 frame.

I'll try and find some photos.
 
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