Which Campy Derailleur?
07-30-18, 12:08 PM
#1
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Which Campy Derailleur?
Campy people: I can’t figure out if this 7 speed RD is C-Record or Athena. (Pretty sure the crankset is C-Record.) Thanks.
Last edited by Horochar; 07-30-18 at 12:08 PM. Reason: Typo
07-30-18, 12:09 PM
#2
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FWIW, on a 1985 Masi Nueva Strada.
07-30-18, 12:24 PM
#3
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Its Chorus , A/B ..perhaps sneaking around Sun Tours Slant parallelogram patent..
since you unscrewed the bolts and use it as you have shown for straight blocks ..
Angled for wider range gear ..
I used mine that way with single chain ring & 14-34t freewheel..
....
since you unscrewed the bolts and use it as you have shown for straight blocks ..
Angled for wider range gear ..
I used mine that way with single chain ring & 14-34t freewheel..
....
07-30-18, 12:28 PM
#4
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LOL. None of the above! Thanks.
07-30-18, 02:10 PM
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1st Gen Chorus RD and C Record crank......
Good you have the Chorus RD on the bike, rather than the C Record RD, as it will shift so much better with its double slant parallelogram design.....
Good you have the Chorus RD on the bike, rather than the C Record RD, as it will shift so much better with its double slant parallelogram design.....
07-30-18, 02:41 PM
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Originally Posted by Chombi1
1st Gen Chorus RD and C Record crank......
Good you have the Chorus RD on the bike, rather than the C Record RD, as it will shift so much better with its double slant parallelogram design.....
Good you have the Chorus RD on the bike, rather than the C Record RD, as it will shift so much better with its double slant parallelogram design.....
07-30-18, 07:42 PM
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Originally Posted by Grand Bois
That's one I haven't heard before. What is meant by double slant parallelogram?
Last edited by Chombi1; 07-30-18 at 08:05 PM.
07-30-18, 08:01 PM
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There's a bit about them on the always excellent Retrogrouch blog: The Retrogrouch: Campagnolo Derailleurs: Evolutionary Dead Ends
Also, they don't work with 8 speed cassettes. Just saying.
Also, they don't work with 8 speed cassettes. Just saying.
07-30-18, 11:30 PM
#9
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I like the intermediate or transitional design of the Athena and Xenon Synchro-7 derailers, and that they index really well using Shimano 9s chain.
07-31-18, 08:25 AM
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Originally Posted by Chombi1
Sorry maybe I mistated.... I think "Offset top pivot/Slant Parallelogram" might be the proper description...... "Slant" meaning the angle the arms go to follow the cogs closely. While the top pivot is "Offset" from the axis of the bottom pivot....
07-31-18, 08:49 AM
#11
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BITD , [USA, 80's] Bikes , with premium brand steel frames were assembled in LBS
with group of customer's choice..
so buying used bikes now you get other people's choices made at the time..
with group of customer's choice..
so buying used bikes now you get other people's choices made at the time..
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