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@Betty_Swollocks
[FONT=Arial]sorry to sound anal Hugh Janus with reference to your enquiry about Campag. bottom bracket spindles but the transition period of 1978 to '79 (Nuovo to Super Record) brought about some crank arm changes, the result is that the crank arms were redesigned - older right arms can be identified by a bulge of larger diameter on the backside where the spindle enters. Later arms have a smaller bulge of smaller diameter. Early Campag. cranks use spindles with markings such as 68ss x 120 or 70ss x 120, while the later cranks use slightly longer spindles that are marked simply 68ss or 70ss. Some transition era spindles carry the designations such as 68ss x 120 AND have +1 /+1.5 markings to the side of the 68ss x 120 or 70ss x 120 stampings. That means that the spindle is the same as the later ones without the 120 designation. [/FONT]
**[FONT=Arial]Use of a later crank on early spindles usually caused the crank to hit the frame. Use of the later spindle on an early crank pushes the arms out farther than optimal - but if using on a 6 or 7sp, or if the arms are worn, then the chainline error may be minimal - this combo may in some cases even be better.
overall my reckoning is that the 120 designation does not, for practical purposes, refer to rear frame spacing - the issue to worry about is era of cranks, [/FONT]**[FONT=Arial]a modern Campag. cartridge of the same length should be fine,[/FONT]
[FONT=Arial]ps: sorry for plagiarising the CR forum a bit for this info.[/FONT]