• 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st 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 The previous version was outdated and no longer supported.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!

125-200cc CR144 Flywheel weight, Rekluse or both?

I do what I find that works from experiance. You can't tell difference when ridding.
Per the DID Chain Spec site : http://www.didchain.com/chainSpecs.html
520VT2 T ring Enduro Chain 3.28lbs per 100L
520ERV3 X ring racing Chain 3.3 lbs per 100L
520MX Non sealed racing chain 3.43lbs per 100L
520ERT2 Non sealed racing chain 2.99lbs per 100L
520NZ non sealed racing chain 3.54lbs per 100L

Doesn't appear to me that Oring chains are out of the hunt at all on chain weight. I even prefer steel sprockets too although maybe a MX guy won't. If you can find a Sunstar Z steel sproket that fits , I find they last longer , clean better in mud and weight almost same as an aluminum sprocket.
 
FWIW, I've been using the same O ring chain and steel sprockets on my 125 MX bike for the past 4 years. I couldn't tell the difference switching from non O ring, and aluminum sprockets, and I haven't made a chain adjustment in 2 years :banana:
 
Coming from the bicycle side chains do effect power output (new vs broke in vs worn) so I would expect an o-ring chain to considerable power especially when new. It is also possible to make a chain 15% lighter in the same pitch and width by hollowing pins and links but likely not done on motorcycles. My guess is the power loss is significant and obviously much more noticeable on a 125 vs a 450 both due to the larger percentage of total power and the much greater rotational inertia of the big 4 cycle. So maybe everyone is "right"?!

What about 18" vs 19" wheels? Seems like the OD is about the same but the tire is more substantial on the 18". However the rim and spokes are smaller so weight is saved. Have any of you ever compared same rim/spokes/hub in both sizes with same width tire. Is one wheelsize considerably heavier than the other?

I have thought of going to an 18" rim on the back of my CR mainly because I still have some tires to fit and they seem cheaper/more available. However maybe there is some performance advantage I do not understand on the 19". Interesting that the "off-road" bikes still come with 18" while the track bikes come with 19". I am sure we can start a great discussion on this topic! ;)
 
Your absolutely right that the chain has more noticeable effect on a 125 than a 450. The 19 rear wheel is supposedly lighter but I never weighed them. How bout tubes? A moose hd tube is about 1 pound more than a standard tube and makes a huge difference in the flywheel effect on a 125. I guess the point I should have made is that an off road guy should do the common sense stuff like, oring chain, hd tube, 18 rear wheel, maybe ever steel vs aluminum clutch before putting a flywheel weight on a 125. The smallest things make huge differences on these bikes.

pedalpro said:
Coming from the bicycle side chains do effect power output (new vs broke in vs worn) so I would expect an o-ring chain to considerable power especially when new. It is also possible to make a chain 15% lighter in the same pitch and width by hollowing pins and links but likely not done on motorcycles. My guess is the power loss is significant and obviously much more noticeable on a 125 vs a 450 both due to the larger percentage of total power and the much greater rotational inertia of the big 4 cycle. So maybe everyone is "right"?!

What about 18" vs 19" wheels? Seems like the OD is about the same but the tire is more substantial on the 18". However the rim and spokes are smaller so weight is saved. Have any of you ever compared same rim/spokes/hub in both sizes with same width tire. Is one wheelsize considerably heavier than the other?

I have thought of going to an 18" rim on the back of my CR mainly because I still have some tires to fit and they seem cheaper/more available. However maybe there is some performance advantage I do not understand on the 19". Interesting that the "off-road" bikes still come with 18" while the track bikes come with 19". I am sure we can start a great discussion on this topic! ;)
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