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Old 05-01-12, 06:51 PM   #1
gearbasher
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Early '80s Nuovo Record RD question(s)...If you have a Pat 81...please take a look.

First off, I'm not sure of the proper terminology. So, if a call a part the wrong name...please forgive me.

The photo below shows four NR RDs. From left to right, they are Pat. '79, '80, '82 and '83.



If you take a look at the spring covers (not sure if that's the right term), where the pulley cage stop screw threads into, on the '79 and '80 the place where the stop screw goes into extends down to the bottom of the cover. On the '82 and '83 that section is a few MMs short of reaching the bottom. Close-up photos below:

Earlier:


Later:


I'm curious...Which one does the '81s have?

Also, The one on my '79 is cracked. I bought another one and it's a later version (this is what made me notice there was a difference). And, being anal, I would like an earlier one. So, if some one has an early version and wants to trade for a later one, that would make my day. Or, if you have one and want to trade for something else, PM me and ask. If not, I'll just use the one I have and live with my OCD.

Thanks.

Last edited by gearbasher; 05-01-12 at 06:59 PM.
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Old 05-01-12, 07:16 PM   #2
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both my '70 and '83 covers fit flush with the cage. sorry i don't have an '81, and i'm not sure i even addressed your question.

i also have major issues with your two cycling rules: i ain't a fallin' no mo!
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Old 05-01-12, 07:40 PM   #3
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I've got an '84 that looks like your '82. Seems they swapped limit screw designs every other year ?!?!
Or maybe they used whatever screws were in the closest box.
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Old 05-01-12, 07:49 PM   #4
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My '81 is like your '82 and '83 - a few mm's short of being flush. I have no idea when the switch was made - looks to be saving a bit of weight on the later units (but minimal). As Homebrew01 notes, they probably just put them together with whatever was available.

I couldn't say for sure the collar on mine is the original one in any case - I take apart and swap stuff around so much I don't know anymore

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Old 05-01-12, 08:37 PM   #5
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So far, it looks like they used whatever was there. So, I don't have to be anal and I'll just use the one I have for my '79.
I just assumed there was a switch-over, but I guess my sample was too small.
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Old 05-01-12, 08:49 PM   #6
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Maybe if you switched from obsessing about derailleur minutiae to obsessing about bike handling drills, you wouldn't fall off so much.
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Old 05-01-12, 08:55 PM   #7
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Just checked the portion of my NR fleet that's in the house (1968-1984's). Everything except one '84 has the earlier design, and said oddball '84 was built up from parts; hence, I'm at fault for that one.

I have an '81 on the faux Rossin - I'll check it in the morning.

-Kurt

P.S.: Yes, I'd most gladly trade this piece. Might even have a spare so I don't have to tear down the '84 just yet. Email me or I'll forget.
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Old 05-01-12, 09:40 PM   #8
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I have a pat. 80 on my Bianchi, and I am willing to swap, if you wish.
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Old 05-02-12, 07:40 AM   #9
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just got back from the garage. I checked an '81 and mine has the longer stop housing. I also checked an '82 and '84 in the parts bin and those have the shorter housing.
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Old 05-02-12, 07:43 AM   #10
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Kurt and John E, thanks for the offers to trade but, since it doesn't seem to matter, I won't obsess. I'll just use the one I have.

Six jours, as far as my falling abilities, I only fall once every four years. Like clockwork, I take a spill every leap year (yes, I know, I'm due this year). Considering I average 10-15K a year, one spill every 50,000 miles isn't too bad. What pisses me off is: I know guys who fall 3-4 times a year and never get a scratch. When I wipe out, I end up off the bike and out of work for 6-8 weeks. Sucks being me.

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Old 05-02-12, 08:21 AM   #11
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Since there is a royal flush starting here, I think you should buy the entire lineup from '68 on, Campagnolo made lots of running changes, especially to this key key chromed part. early on there was no limit screw, it was sculpted from the barrel. Then they brazed on the limit screw boss before either finishing the tool to form it or fully committing to the design.

If I remember the shorter later limit screw boss is a through hole, the earlier that extends longer is closed. Easier to tap and clean a through hole than a closed port. It was the production engineer's doing.
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Old 05-02-12, 09:36 AM   #12
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Quote:
Originally Posted by repechage View Post
If I remember the shorter later limit screw boss is a through hole, the earlier that extends longer is closed. Easier to tap and clean a through hole than a closed port. It was the production engineer's doing.
Actually, my longer '79 and '80 are through-hole, also. Maybe, even earlier ones weren't?
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Old 05-02-12, 09:59 AM   #13
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Quote:
Originally Posted by gearbasher View Post
Actually, my longer '79 and '80 are through-hole, also. Maybe, even earlier ones weren't?
Some were, as I had to dig out debris from one that fell to the bottom the the cleaning tub long ago. Running changes, the Campagnolo way. Kind of Japanese, continuous improvement.
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