George Rausch wrote:
>
> Can anyone explain the reasons for Columbus tubing being rifled ? I see some
> rifling down inside my head tube, but cannot for life of me think of a
> reason.
The helical ribs add stiffness without too much added weight.
Columbus History 1919-2001
http://www.columbustubi.com/
Chuck Schmidt SoPas, SoCal http://www.velo-retro.com (Catalog reprints, updated Campagnolo Timeline and T-shirts)
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