• 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 The previous version was outdated and no longer supported.

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    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!

250WR Caliper deforms when braking, normal ?

P

paul-ochon

Husqvarna
C Class
Hi,

On a Husqvarna 250WR year 2003 the front brake was not hard enough, as if there were bubbles in the system. Today I've unmounted the brake caliper and noticed, using a caliper (measuring tool), that there are no bubbles but that the brake caliper deforms when I press the brake lever.

The deformation between the piston and the opposite part of the caliper is about 1 or 2 millimeters. At this moment, the brake lever touches the accelerator.

I suppose that with a greater lever clearance the caliper would deform more.

Any idea ?
Can the caliper's material have aged and not be so hard as originally ?
Have the 250WR reputation of having soft calipers ?
 
Material will not "age" in such a manner. It either is the same as it always was, or there are cracks in the unit allowing it to spread (unlikely).
 
I had the same on an old KDX250, the caliper would spread under load. As said above aluminium doesn't 'age' but can it become more flexible after 10 years of use? Not sure as I'm no metallurgist but I do know when I changed the caliper for one from a newer bike the new caliper didn't spread like the original.
 
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