Thanks for the information and photos.
Looks like the der in question in an 84 because it has the flat back pivot plate and the 84 spring location. Never noticed the difference before so it was interesting to see it after your comment got me to take a closer look at my ders than I ever have. I've been on N. Record for a long time but never noticed this before.
I have other 84 N. Records that say "84" on them near the cable entry and have the black plastic sleeves on the adjustment screws. This blank 84 der in question, however, has naked spings--although there may be a black plastic coating on the springs themselves. These open springs made me think it was an early der intially, because with those springs it looked like my various 70s N. Record ders. Now it looks pretty different to me.
--Why would this 84 have no pat. date stamp and no plastic sleeves while my other 84 N. Records have both? --Why do you say the 84 is a retro deraillure? Did they end production and then start up again with remanufactured tooling? Why did they do a retro version? Did they use S. Record rear pivot plates? --Why do you say that the retro 84 is not worth discussing? Is it because it technically goes out of the '83 CR time limit? Or is it because it is not period correct on the most desirable collectibles from the 70s and before? Is it less well made in some way? Now that I see the difference, the flat rear pivot plate looks less substantial than the curved stamped ones on my 70s N. Records.
Thanks for the knowledge, Mitch Harris Utah Co. UT
>From: kenneth denny <kendenny55@yahoo.com>
>To: mitch_harris789@msn.com
>Subject: Campy NR Rear Date: Fri, 18 Jul 2003 17:10:31 -0700 (PDT)
>
>
>Hi Mitch,
>
>The Campy NR was produced in four different versions with no patent date -
>67, 68, 69 and post '84 (1984 was a re-issue that not only had no patent
>date, but the pivot spring retaining bvolt was mounbted on the lower pivot
>body, as opposed to the upper.
>
>1967 was the first year of the NR derailleur. It was marked "Patent
>Campagnolo" on the upper pivot body, with the lettering aligned
>perpendicular to the pivot bolt. This year the derailleur was fitted with 9
>tooth pulleys, the knurled spring pivot barrel is slightly shorter (16mm)
>as opposed to later versions (19mm). The pivot stop was also shorter and
>did not ectend to the end of the knurled pivot barrel as in later models.
>The spring retaining holes that are drilled into the pulley cage are
>oriented in four locations. (see attachment)
>
>1968 was pretty muich the same as 1967, except that the word "Patent ___"
>was oriented in the more familiar location adjacent to the cable entry.
>Spring hole orientations are now in two locations. Knurled spring barrel is
>19mm. (see attachment 2)
>
>1969 is the same as '68, except that the pulleys are now 10 teeth and the
>spring pivot pin extends to the end of the knurled spring barrel.
>
>1984+ is a retro-derailleur and not worthy of discussion, for all intents
>and purposes.
>
>Please feel free to share this info with the CR group.
>
>Take care,
>Ken Denny
>Boston
>
>
>What years were N. Record read deraillures not stamped with year numerals
>near the cable stop?
>
>Thanks,
>Mitch Harris
>Utah Co., UT
>
>
>
>
>
>
>Kenneth E. Denny
>70 River Street
>Boston, MA 02108
>kendenny55@yahoo.com
>617-523-1173 H
>617-620-2011 M
>
>---------------------------------
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