Campagnolo C-Record Ist gen date query

[gerryattrick]

I am trying to get a date for this rear mech. I have read that 11 date stamp is a 1985 model but cannot get a definite answer for a date stamp 21, which this is. Does anybody here know?

 

[27motorhead]

@ferrus !!!

 

[ferrus]

Beautiful mech!
I can't remember too well to be honest, but IIRC '85 is 11 as you say, '86 should be 22, '87 = 33 etc.
Not sure how 21 fits in there. I'll try and find my old files but they might be stuck on an old PC

 

[ferrus]

There were a couple of iterations of the 1st gen' C-Record mech. The earliest version actually had a sprung 'b-pivot'. All later versions inc. 2nd gen' were unsprung, if this helps at all..

 

[gerryattrick]

There were a couple of iterations of the 1st gen' C-Record mech. The earliest version actually had a sprung 'b-pivot'. All later versions inc. 2nd gen' were unsprung, if this helps at all..

This one has the spring around the P-pivot end of the parallelogram as shown in the photo.
I hope I’ve got the P and B pivots right in my head!!
Definitely a 21 stamp in a square in the parallelogram.

 

[ferrus]

Ok, I'd have thought the sprung b-pivot (hanger bolt) would make this an early one from '85.
That 21 stamp is very confusing though