Re: [CR]Constructeurs/technical trials/drillium


Date: Tue, 03 Jun 2003 12:02:59 -0700
From: Chuck Schmidt <chuckschmidt@earthlink.net>
To: classicrendezvous@bikelist.org
Subject: Re: [CR]Constructeurs/technical trials/drillium
References: <a05010405bb0257c3172d@[66.167.139.57]>


Jan Heine wrote:
> (cut)
> Which gets me to my question: How much is saved by drilling out
> parts? Somebody must have before/after weights, or be able to compare
> drilled vs. undrilled parts.
>
> I suspect the savings are small - Ernest Csuka once told me how they
> spent an hour to drill out a chainring, and then weighed it. They had
> saved 2 or 3 grams. I think to really save material, one had to cut
> away whole sections.

One thing I learned from Peter Johnson was (and I'm paraphrasing) "If you can drill holes in a part and it doesn't fail, then the part was overbuilt to begin with."

Chuck Schmidt L.A. http://www.velo-retro.com (Drillium on site)

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