Re: [CR] engraved vs. etched campy crankarms

Date: Wed, 16 Mar 2005 17:19:06 -0800 From: Jay Sexton <jvs@sonic.net> To: classicrendezvous@bikelist.org Subject: [CR]engraved vs. etched campy crankarms

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And the etched logo was located in a slightly different position on the arms than the engraved logo.

Are we anal about this stuff, or what?

Wayne Bingham Lovettsville VA

Is there any truth to the story I have heard that the etched and/or the engraved versions of Campy crank arms broke due stress fractures from these processes?

What are the locations of the logos on engraved and etched crank arms?

Jay Sexton Sebastopol, CA

It is possible for arms to fail in fatigue at the stamped logo, but not the laser-etched ones, AFAIK. I've seen one picture of one arm (a Stronglight) that broke that way. As always, see Ric Hjertberg's page for some enlightening broken crank pics: http://pardo.net/pardo/bike/pic/fail/FAIL-001.html The Stamped logos on late R/SR ("non-fluted") arms are fairly high up on the arms, whereas the (even later) laser-etched logos are about mid-arm. Very early C-Rec parts had stamped logos, then switched to laser-etched. I imagine this happened at approximately the same time that the R/SR arms switched their processing method. Laser-etched logos can fade significantly with long-term exposure to UV light, it seems.... Greg Parker Dexter, Michigan, USA