No worries crazing? Or impending failure.
07-27-14, 12:24 AM
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No worries crazing? Or impending failure.
I have had these DT R450 rims for a few years now, and done at least 15000km (actually no idea, but at least 15k for a reference) in that time. I weigh ~65kg. Within the first year these stress marks had appeared but I had been told they were just cosmetic.
I am building them onto a fresh set of hubs, and just wanted to get a second opinion as to whether the marks are 100% cosmetic.
Thanks.
I am building them onto a fresh set of hubs, and just wanted to get a second opinion as to whether the marks are 100% cosmetic.
Thanks.
07-27-14, 07:30 AM
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This type of thing is very common in hard anodized rims and is one reason they've gone out of favor. The surface is very brittle compared to the base metal and so cracks as the rim flexes. Eventually (very eventually) these surface cracks can become places deeper stress cracks in the structure begin, and the process of metal fatigue can be faster than if the rim weren't hard anodized.
But eventually is a long time and these rims will probably succumb to some sort of crash or pothole damage before that.
But eventually is a long time and these rims will probably succumb to some sort of crash or pothole damage before that.
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07-31-14, 06:43 AM
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I'd be leery about building up any used rims with that much distance on them. The stress cracks don't worry me but the brake tracks are obviously worn and you could do a lot of work only to have them crack there.
08-01-14, 05:27 AM
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I do share the same sentiments HillRider. The picture doesn't show it well but the brake track is in very good shape wear wise (minimal concave curve with a straight edge against its surface). Wear indicating dots still have depth to them. Uneven lines in pic from whatever crap being caught up in the pads.
08-01-14, 08:42 AM
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I do share the same sentiments HillRider. The picture doesn't show it well but the brake track is in very good shape wear wise (minimal concave curve with a straight edge against its surface). Wear indicating dots still have depth to them. Uneven lines in pic from whatever crap being caught up in the pads.
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