Hello Don,
I think it was marketed as the Wing or Spoiler. An aerodynamic thing. Personally, I think it cheapened the marque, rather than have subtle beauty and function, Cinellis became gimicky. Note how many flying C decals are on Cinellis from that period verses Cinelli logos found on bikes from the 70s and prior.
Regards, David Martinez Fremont Ca US of A
Donald Gillies <gillies@cs.ubc.ca> wrote: Why do Cinelli bottom brackets have the apparent "vent" or "duct" shape on the bottom ?? I would think that this shape probably makes the bottom bracket very heavy. I have never understood the reason why it has this shape, thanx.
- Don Gillies
San Diego, CA, USA