Re: [CR] Was Velo-Mine polishing - Now crank arm breakage

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Date: Wed, 07 Apr 2010 19:16:42 -0500
From: "John Thompson" <johndthompson@gmail.com>
Organization: The Crimson Permanent Assurance
To: Classicrendezvous@bikelist.org
References: <1341534334.6762921270158063557.JavaMail.root@sz0151a.westchester.pa.mail.comcast.net> <4BB5336A.4020801@aol.com> <h2v75d04b481004011627me0b912fcp97ab092c5c5e5d62@mail.gmail.com>
In-Reply-To:
Subject: Re: [CR] Was Velo-Mine polishing - Now crank arm breakage

Kurt Sperry wrote:
> I was always amazed people were able to abrade through the very hard
> anodized oxide layer with leather toestraps.

I don't think it's the leather that's abrading the finish, but rather grit stuck to the leather. Plenty of silica on most roads, at least.

-John Thompson (john@os2.dhs.org)
Appleton WI USA