Nuovo Record rear derailleur version 5, pat '83
05-21-20, 05:07 PM
#1
señor miembro
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Nuovo Record rear derailleur version 5, pat '83
From this pat '83 rear derailleur in my bin, I was going to use only its nice looking hanger bolt in another NR derailleur on a bike -- y'all do that right? Grab the nicest, shiniest bits for your bikes? -- and noticed there's no spring return bolt (part 84 in the schematic below).
The other derailleur is also an '83, but has that return bolt ... so I guess this last version (5) of the Nuovo Record rear derailleur came out that year.
Anyhoo, I learned something. Both derailleurs have hollow rivets, of course. My pat '72 NR rd on the Paramount has the solid rivets. So I'm probably losing watts on that bike.
NR group on velobase
Y'all can thank me for not choosing a click-bait title, like "the last of the great derailleurs."
The other derailleur is also an '83, but has that return bolt ... so I guess this last version (5) of the Nuovo Record rear derailleur came out that year.
Anyhoo, I learned something. Both derailleurs have hollow rivets, of course. My pat '72 NR rd on the Paramount has the solid rivets. So I'm probably losing watts on that bike.
NR group on velobase
Y'all can thank me for not choosing a click-bait title, like "the last of the great derailleurs."
Last edited by SurferRosa; 05-21-20 at 05:11 PM.
05-21-20, 05:14 PM
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So it goes.
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The gear return spring 98/A doesn't look right on yours either - to be sure I checked an '84 I have here, it complies with the drawing. Odd.
Edit: My bad - my derailleur is a Pat 83, the bike is an '84 and I made a wrong assuption.
Edit: My bad - my derailleur is a Pat 83, the bike is an '84 and I made a wrong assuption.
Last edited by PilotFishBob; 05-21-20 at 05:18 PM.
05-21-20, 05:23 PM
#3
señor miembro
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05-21-20, 08:10 PM
#5
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Velobase tells me the derailleur went from 205 grams at introduction to 194 grams in its version 5.
Thought this change in ver3 was interesting:
Thought this change in ver3 was interesting:
Originally Posted by velobase
Another variation in this V3 era is the arrival of a short 'top-hat' nylon sleeve inserted into the outside end of the P block. It abutts the outer end of the jockey cage tension spring, and goes under the head of the pivot bolt that rotates inside the spring. It appears in '72... it is still there in the V5 photo and is now made of bronze. It effectively shields the end of the spring from the rotational friction of the pivot bolt end-shank, which in the V1 also holds the spring-end in place in its slot in the P block.
05-21-20, 09:05 PM
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SurferRosa,
There was a change in how the spring was installed. I have a body sitting here on my desk that is vintage 84 that has the new spring installed in it. The newer spring is locked in place by the spring being installed into the riveted in place arm of the derailleur, rather than the bolt l through of the earlier models with the remove-able spring held in place by a through bolt. That is the reason for the lower weight of the later models of the derailleur. The newer model is a bit harder to clean than the older models where taking the complete spring assembly out of the body is an option. It still works, but is a pita for any refurbishing of the derailleur. HTH, MH
There was a change in how the spring was installed. I have a body sitting here on my desk that is vintage 84 that has the new spring installed in it. The newer spring is locked in place by the spring being installed into the riveted in place arm of the derailleur, rather than the bolt l through of the earlier models with the remove-able spring held in place by a through bolt. That is the reason for the lower weight of the later models of the derailleur. The newer model is a bit harder to clean than the older models where taking the complete spring assembly out of the body is an option. It still works, but is a pita for any refurbishing of the derailleur. HTH, MH
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05-21-20, 11:08 PM
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Early outer plate. Early inner plate, later lower knuckle with revised spring - which works better as the spring does not have to slide along the link. Earlier cage layout. Could be a Vincenzia “ barbershop “ unit.
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05-22-20, 02:17 AM
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I have a Pat. 1983 NR RD I bought new that year, when I was in college.
Although it shifts white below compared to my Simplex and Suntour RDs through the years, it is a high quality piece and looks more like jewelry that a bike component.
Difference I can see is, my Pat. 83 NR RD has the CPSC required adjuster screw black plastic "horns" on it. Your NR RD also seem to have been treated to some black paint on check patterned background on the outer derailleur arm face which was a popular mod for NR RDs in the 70's and very early 80's.
Although it shifts white below compared to my Simplex and Suntour RDs through the years, it is a high quality piece and looks more like jewelry that a bike component.
Difference I can see is, my Pat. 83 NR RD has the CPSC required adjuster screw black plastic "horns" on it. Your NR RD also seem to have been treated to some black paint on check patterned background on the outer derailleur arm face which was a popular mod for NR RDs in the 70's and very early 80's.
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72 Line Seeker
83 Davidson Signature
84 Peugeot PSV
84 Peugeot PY10FC
84 Gitane Tour de France.
85 Vitus Plus Carbone 7
86 ALAN Record Carbonio
86 Medici Aerodynamic (Project)
88 Pinarello Montello
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72 Line Seeker
83 Davidson Signature
84 Peugeot PSV
84 Peugeot PY10FC
84 Gitane Tour de France.
85 Vitus Plus Carbone 7
86 ALAN Record Carbonio
86 Medici Aerodynamic (Project)
88 Pinarello Montello
89 Bottecchia Professional Chorus SL
95 Trek 5500 OCLV (Project)
05-22-20, 10:40 AM
#9
señor miembro
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