To be succinct: Drainage/ventilation
Fred Rednor - Arlington, Virginia (USA)
> Hi Chuck,
> My guess is the cutouts were only to save weight. I have
> a 1973
> Italvega SuperSpeciale which has no BB cutouts and the 1974
> Italvega
> SuperLight did have cutouts. Both were top of the line for
> their year.
> Usually there was a plastic liner inside but I agree with
> you why open
> up the frame and bearings to moisture and dirt to save a few
> ounces.
> Skip Magnuson
> Spokane, WA USA
>
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