In a message dated 11/5/03 7:40:07 PM Pacific Standard Time, FujiFish1
writes:
> Stevan, I'm confused. Please review my description, to make sure there
> isn't a mistake in your response, and then please un-confuse me.
>
Hi Mark, It's difficult to completely un-confuse things without having known parts to inspect and compare, but I'll try.
> Wouldn't the Sport or GS bb's have the spindle length of 112mm pre-CPSC,
> and then move out to like 114.5 post-CPSC (with Record changing to 115)? Are
> you saying above that you think it is, or is not, possibly a GS from Cat. 17
> or 18 time? Cat.17 came before the CPSC changes, and Cat.18 came after, no?
They can be a little late changing the graphics in catalogues, so it would seem likely that it's from the period of Catalogue 17. There may be someone out there with greater knowledge of specifically when things were actually changed.
This spindle is 113mm, so that is pre-CPSC Record length, no? If
pre-rifled NR bb's have
> thin walled cups, then how was the spindle marked? How would those cups
> differ from GS cups of the time, and of later? Would that description be for
> the correct bb for a later 151bcd crank?
>
113 is close enough, my one and only thin cup road axle is marked 68-SS-120 with a world logo and is 112mm in length. My 68-P-120 is 109.2mm. The cups would only likely differ in the finish and possibly very subtle differences in the lettering. Practically speaking, they should be functionally the same. Are you trying to use it with a 151 crankset? At some point, you just have to be empirical, install it, and see if it works with your cranks. I actually prefer to have the chainline in a little from the ideal, it makes it easier to use the big ring with larger cogs. I used to do this by using shorter bb axles with the cranks that needed slightly longer ones, commonly achieved by using Nadax, OMAS or other non Campy bbs. I broke 2 Campy bb axles. They were both nice radial splits that failed slowly enough I didn't have to worry about anything more than how to get where I was going. I've never had a failure with the other 2 mentioned. Stevan Thomas Alameda, CA
BTW, if anyone has anything to add to the identification of any of these parts, please chime in!