RE: [CR]Stress cracks on Super Record cranks?

Example: Production Builders:Peugeot:PY-10

Subject: RE: [CR]Stress cracks on Super Record cranks?
Date: Sun, 15 Oct 2006 22:57:38 -0700
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Thread-Topic: [CR]Stress cracks on Super Record cranks?
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From: "Mark Bulgier" <>
To: "ryan hildebrand" <>, <>

Yes, I believe those are cracks. While it might be possible for some other kind of surface mark to look like that, I doubt it.

If you catch the cracks while they're shallow enough, you can file away all the cracked metal, leaving the edge rounded and smooth, and have a potentially better than new crank. Yours look like they've progressed too far though.

For a good description, with pictures, of what might happen (to the crank, not to you) if you keep riding them, check out: Another good webpage for fatigue crack pictures: Check out the Campy crank about 1/3 down the page.

Mark Bulgier Seattle WA USA

> -----Original Message-----
> From:
> [] On Behalf Of
> ryan hildebrand
> Sent: Sunday, October 15, 2006 7:59 PM
> To:
> Subject: [CR]Stress cracks on Super Record cranks?
> While cleaning my bike today I noticed some very small marks on my
> 1979 Super Record spider:
> Are these stress cracks? How worried should I be? Please advise!
> Ryan Hildebrand
> Costa Mesa, Calif.