mparker326

I'm looking to replace the pitted Campy BB cups on my 74 Motobecane Grand Record. They are french threaded. The spindle is a 68 SS 120 X3 (I'm running a Triple Campy crank).

Do I need a thick wall cup or a thin wall cup? If I am looking at replacements on ebay, how do I tell the difference between the two?

Thanks,

Mark

conspiratemus1

For a Record triple spindle, you need the thin cups. (Nuovo Records, made only for doubles, used thick cups.) The thick cups have helical grooves milled into the spindle hole (resembling the lands in a rifle barrel), to thrust dirty water out of the bearings. They should be easily visible in photos taken with any degree of obliqueness. In a head-on shot that prevents you from seeing any of the thickness, the grooves make the hole look mis-shapen and not properly round, as if it had been drilled off kilter.

Good luck in finding the thin cups.

Pars 

Bicycle Classics seems to have them. Record (not Nuovo) and Gran Sport also used thin cups as well as all triples:

https://00eda5d.netsolhost.com/bottom.html

• NOS thin-wall British-thread cupset (1.370" x 24 tpi), $49.00, BBCS-CTB

This link has the best info I have found for Campy BBs (I found the link in another thread here while searching, so thanks whoever dug this up)

https://www.minortriad.com/campagbb.html

ftwelder

I have a bunch of Campy french cups, I will see what I can find.

mparker326

Thanks for the info guys. ftwelder, I appreciate you looking for me. Please let me know.

mparker326

I went out and looked and my adjustable cup is a thin wall and my fixed cup is a thick wall. That explains why there was a 2 mm spacer on the adjustable cup.

ftwelder

sorry, I guess I sold them all at the swap.