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Can I put an SGS-length cage on a Campy rear derailler?(8 posts)

Can I put an SGS-length cage on a Campy rear derailler?pusher
Feb 25, 2003 4:46 PM
I am aware that there is a Record Long Cage with a capacity of 39. However, I need one that will work properly with a capacity of 45. Besides, I can't spend $210 on a rear derailler no matter how much carbon and titanium is on it.
Only this would make it possible for me to get away from my all-mighty maddam, the big S.
re: Can I put an SGS-length cage on a Campy rear derailler?Rusty Coggs
Feb 25, 2003 5:13 PM
Why not just avoid the smallest cogs when in the smallest ring, and what's wrong with the other campy long cages?
Not sure of your goals, but ...IFRider
Feb 25, 2003 5:17 PM
Checkout this ... I have tried it and it works. I intend to do this once my Ultegra STI levers wearout ...
My goal: 52-42-30 with an 11-34 cassette and Campy Shiftingpusher
Feb 26, 2003 8:33 AM
I could not find Chorus, Centaur, or Daytona long cages; just mediums and shorts.
I do not wnat to re-rout my cable around the clamp to make it sort-of compatible. I want it to be exact.
What I want to do, I can do easily with Shimano.
Campy Cassettes: Why should I give up my high gear (11 or 12 tooth) in exchange for a low one (28) when I can have both with a Shimano MTB Cluster?
Here's why, Campy clusters and to a lesser degree, Shimano road clusters are a holdover from the days when medium and long cage road deraillers did not exist.
My goal: 52-42-30 with an 11-34 cassette and Campy ShiftingRusty Coggs
Feb 26, 2003 8:58 AM
Cage length itself does not have alot to do with shifting a big cog.Shimano short cage mtb derailers will also shift a 34, and back in the days of 5 and 6 speed there were deraliers that would shift a 34.I kinda think you are out of luck if you refuse to fudge the cable mounting.
"campy shifting"C-40
Feb 26, 2003 2:46 PM
Long cage rear derailleurs in centaur or chorus are available from

Anytime you use a shimano cassette, you won't have "campy shifting" because the shimano cog spacing is not the same as campy. Shimano 9 speed spacing 4.32mm and campy is 4.55mm. The campy derailleur overshifts by 5% on each shift. The best you can hope for is a 20% error in the derailleur position on the fourth shift, if the derailleur is perfectly positioned under the center cog.

The idea of using campy 10 speed shifters and a shimano long cage derailleur with the cable routed as shown on the HubBub website has a better chance of working with an 11-34 cassette than trying to use a campy derailleur that's only designed to handle a 29 tooth largest cog and only has a capacity of 39 teeth.

The 11-34 cassette idea makes no sense to me. With the large jumps between cogs, you'll constantly find yourself in a gear that's too high or too low. You'll be hunting for the right gear, only to find it's not there.

If you don't have the power to handle the steepest hills with a 30/28 (the lowest campy 9 speed ratio) then you don't have the power to need a 52/11.

IMO, the smartest setup is a 53/39/30 with a campy 10 speed 13-29 cassette and a campy 10 speed long cage derailleur. At present, this chainring combo is only available in a Record crank. A cheaper chorus 10 speed long cage derailleur is available.
Wow, I didn't know that about the cog spacing...pusher
Feb 26, 2003 5:52 PM
Thanks for the heads up. I guess Campy shifters aren't in my future. Maybe I'll just get some slicks for the mountain bike. It would be a whole lot cheaper.
As for that wide gear spacing, I currently ride a 53-39 with a 12-32 8 speed XTR cassette. I do not miss the close ratios like I thought I would. I do, however, like the lower ratios. They just aren't enough. Where I live in East Tennessee we have lots of small rolling hills. My city does not grade its streets like the forest service. I am shifting almost constantly. I am rarely on perfectly flat terrain, in search of that sweet spot.
Sell it and get ShimanoLC
Feb 26, 2003 10:28 AM
In your situation there is not much choice.