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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