Originally Posted by
bulgie
Are you sure about that? I (vaguely) remember it opposite, that they were 128 at first, with some 122 mm ones later. 128 is close enough to use 130 rings with some filing, not ideal but do-able. 122 of course is a perfect match with Stronglight 93 and similar (49, 57, 63, 104 et al.)
of course...
Not.
I recalled there being 2 BCDs for Nervar Star and checked on Velobase, where there is some contradictory info!
But then found this entry by none other than our own Chas, and he agrees with our own Bulgie, so... end of story!
"These are the earlier model Nevar Star cranks from the Bike Boom era of the early 1970s. They take proprietary 128mm BCD chainrings. The later version from the late 70's used 122mm BCD chainrings - the same as Stronglight."