More than likely it is SL, but it might depend on the size. SP may have been used for frames in the larger sizes (>58 cm?)
Do you know the seat post diameter? If 27.2 mm, then the tubing is likely SL. I think 27.0 means SP. Do you know the weight of the bare frame? SL frames are generally around 4.3 lb.
Brian Samson Vancouver, BC, Canada
On 6-Apr-10, at 9:29 AM, jeff holt wrote:
>
> "I have a Gios Torino "Professional" circa 1985 and was wondering
> about the
> tubing the frame is made with. It has no tubing decals on it, the
> dropouts, head tube lug, BB and seat tube lug all have GIOS cast in
> them.
> The BB is slotted on the bottom and it came with a full-chrome fork
> that
> has GIOS cast in the sloping crown. It is unusual in that the frame is
> painted matte black instead of the usual Gios blue. All the other
> decals
> look in order.
>
> Does anyone have any information about what kind of tubing this
> frame was
> made with? I would imagine it is Columbus, but I would just be
> guessing -
> and still don't know if it's SL, SP or some other inferior quality."
>
> The 1986 GIOS brochure shows pictures of the "Professional" all
> bearing Columbus SL stickers.
>
> Jeff Holt
> West Deptford, NJ