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#11
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Help needed!!! What kind of group is this? ~20yr Bianchi bike, Campa group.
Hi Jeff,
thank you! I assume the cast stop is this little ring with the thing sticking out which pushes against the little knob shown in that picture? The "thing" broke off that ring. Any idea where I could get a cast stop? Max JeffWills wrote: Diablo Scott wrote: Yeah, definitely Victory or Triomphe for the crank and ders, Victory cranks had a self-extractor, The crank has a self-extractor, so it's probably all Victory. Second (?) lowest in that era's Campy line, lowest being Triomphe. From the looks of the rear derailleur, I'd suspect that the cast stop on the rear derailleur has been sheared off. This pictu http://www.physik.tu-berlin.de/~mxhf...s/img_4729.jpg shows an intact stop on the derailleur hanger, so a replacement is in order. IIRC, this was a weak point of these derailleurs. I could be worng, though- those are 17-year-old memories, and I ain't getting any younger. Jeff |
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#13
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Help needed!!! What kind of group is this? ~20yr Bianchi bike, Campa group.
"damyth" writes:
On the way back Delta damaged the gear group [ broke away the derailleur stop for a victory rear derailleur] in the back. Nobody would blame you if you bought a Nuovo Record rear derailleur for your bike, they were still being made in those years and they are 1 or 2 levels up in the world, I'd look for a 1985 or 1986 model, they will say "PAT 85" or "PAT 85" on the top shoulder of the derailleur, on ebay, cost should be $35 for a pretty nice one. The Victory and Triomphe derailleurs are nearly identical except for the geometry of the pulley cage ( victory ~ super record, triomphe ~ nuovo record). There is no name on the parallelogram so you can swap the pulley cages over. Buy either type of derailleur. If you get a Triomphe, just move your pulley cage over to the new derailleur, campy stuff is all easily taken apart and rebuilt, and you will have your Victory derailleur again. Alternately, take you derailleur to any machine stop and have them weld a piece of aluminum onto the back of it to recreate the derailleur stop. Then spent about half an hour with a file and sandpaper to clean it up. Good luck, - Don Gillies San Diego, CA |
#14
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Help needed!!! What kind of group is this? ~20yr Bianchi bike, Campa group.
"Art Harris" wrote in news:1153484089.115931.111950
@i3g2000cwc.googlegroups.com: john wrote: Is your purpose to totally restore it to new condition? If not, you can use a newer & probably superior derailleur for less money. I agree in principle, but a modern derailleur might have to be modified slightly to work with his wide chain. It looks like he's got a 7-speed system. Also, if his shifters are friction rather than indexed, his choice of derailleur would be greater (Shimano, Sun Tour, etc. as well as Campy). FWIW, when I went Triple, I replaced my mid-'80s Sachs-Huret New Success rear with a long cage 9-speed Veloce. Worked fine with a Suntour New Winner Ultra-7 and a SRAM PC58 chain, with Rivendell Silver bar-ends. I've since gone indexed and am running all-Veloce. |
#15
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Help needed!!! What kind of group is this? ~20yr Bianchi bike, Campa group.
wrote:
I bought this beautiful oldtimer bianchi road bike about a year ago. It has written the name Record 920 on the frame. I liked it so much, I took it from Germany to the US when I went there to write my thesis. On the way back Delta damaged the gear group in the back. Before I can start looking for the replacement part I'd need to know what type/year the campagnolo group is. Pictures are posted he http://www.physik.tu-berlin.de/~mxhf...WWW/index.html It's either Campy Triomphe or Victory - equvilant to Shimano 105 and 600 back then. The finnish makes me think its Triomhpe. -- Morten Reippuert Knudsen :-) http://blog.reippuert.dk PowerMac G5: 1.6GHz, 1,25GB RAM, 300+300GB SATA, 16xDVD DL, Bluetooth mus+tastatur, R9600PRO, iSight, eyeTV200 & LaCie Photon18Vision TFT. |
#16
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Help needed!!! What kind of group is this? ~20yr Bianchi bike, Campa group.
Donald Gillies wrote: Alternately, take you derailleur to any machine stop and have them weld a piece of aluminum onto the back of it to recreate the derailleur stop. Then spent about half an hour with a file and sandpaper to clean it up. Good luck, - Don Gillies Donald, I'm really curious, were you actually able to spot that damage, or was it an educated guess? Also do you know if the extent of heat treatment to that particular derailleur was so low that welding would not render it useless? I guess it really doesn't matter, as it's useless now Regards, John |
#17
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Help needed!!! What kind of group is this? ~20yr Bianchi bike, Campa group.
"john" writes:
How did you know the derailleur stop was broken off ? Also do you know if the extent of heat treatment to that particular derailleur was so low that welding would not render it useless? I guess it really doesn't matter, as it's useless now 1. I could guess that the stop had broken off because the derailleur was pointing too far forward. 2. Derailleurs are typically not heat-treated, although the parts may be forged, there have been many successful CNC'd derailleurs, so I wouldn't worry about welding compromising the strength of the derailleur. under normal circumstances the derailleur is under almost no stress - just a few pounds from the springs and pulleys taking up the slack in what otherwise would be a _loose_ chain. - Don Gillies San Diego, CA |
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