While looking for something else I ran across this in the '82 Olympic Catalogue. We're always trying to figure out what Campy did to the cranks when they made the CPSC change. Don't know why I'd never noticed it. Sorry if it's been posted before.

Love the translation to the word collar, technical dimension changes are a bit more invloved than stated but that is a quick way to identify the difference.

Can someone post pictures of both?

Here ya go....

That passage is not in the catalog, but it is a good description of the change.

There's some good info here:
https://www.bicycleclassics.com/bottom.html

I have seen that note before... I just sent a crank set off to a forum member, the drive side is dated '77 and it has the small "collar"... either way it will work on a newer style spindle.. but just pointing that out... how could that be? Were they told prior to 1978 that they had to make this change and so the first prototypes were made in 1977? Just wondering out loud fell free to comment.

Edit: just looked at the bicycle classics link. notice the overlap... for '77.

Wherever it is from, it is incorrect. The transition began in 1977 at the latest.

-Kurt

I read the actual catalog that is in my hands. It's not there, that was a web site notation, not part of the catalog. Additionally, why would Campagnolo refer to themselves in the third person in their own catalog??

It's in the scan I have. Looks like Campagnolo decided to rewrite history.

And here is the page that IDs the old and new axles.

I looked up the scan. There must be two 82 olympic catalogs My oroginal catalog is an 8 & 1/2 x 11 landscape layout with a blue front cover. I'll have to print this one out and look for an original of it...