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would I need a long cage derailleur with this config ?(11 posts)

would I need a long cage derailleur with this config ?PeterRider
Apr 23, 2003 2:54 PM
with 42/60 chainrings in front (yes, 42/60) and 11/29 or 13/29 in rear on a campy setup, would I need a long cage rear derailleur ? If yes, do all lines of campy stuff have long cage rears, or only some do ?

Thanks !

Pierre
wowDougSloan
Apr 23, 2003 3:12 PM
I'd recommend one to take up all the slack resulting from the gear differences. You could get around it by running a short chain, but being extremely careful not to go bigxbig, or run a long chain but not go smallxsmall.

There is simply no reason not to use a long cage derailleur if it might help to avoid a problem; you gain 5 grams, and, at least for me, shifting does not in any way suffer. I have a short cage and a long cage Record on 2 differnt bikes right now, and I can't tell the difference.

I'd just take a look at the Campy site for your other question. Don't know myself.

Doug
What are you planning to use for a front derailleur?Spoke Wrench
Apr 23, 2003 3:32 PM
I'm thinking you may encounter a derailleur arc issue. A derailleur designed to shift a 53 or a 54 is going to have to be mounted way high to keep from rubbing that 60 chainring.
Who do we know that can spin a 60/11?Kerry
Apr 23, 2003 5:00 PM
Unless this is going on a 20" wheeled bike, 60/11 (or even 60/13) seems a bit extreme for any practical riding.
Nick could, but he's in Australia right now(nm)merckx56
Apr 23, 2003 6:32 PM
depends on the situationDougSloan
Apr 23, 2003 7:30 PM
For the 508 team, I used a 56x11 and was spun out a lot on the long descents; I had a 6'4" team mate who spun out his 60x11 frequently; he made up 6 minutes on one opponent team with that gear on one descent. Even on the solo 508 last year, I used a 55x11.

Racing in the mountains is different that what most people may be used to.

Doug
It's on 451 wheels.PeterRider
Apr 23, 2003 8:54 PM
Currently it has 48/60 and 11/23 in rear, I didn't do the calculation but was told lowest gear is equivalent to 39/26 on 700 wheels. I want lower than that, so first I'll try a 42 ring (hope it will be ok w/ front derailleur), then I'll try to change the cassette.

Pierre
what are you using that combo for?rockbender
Apr 23, 2003 6:02 PM
The last time I used a 60T ring I had a long cage rear der. using 7 spd RSX gear. My chain was just a bit too short to run big/big and I did actually bind it up once (my fault).

given the wide ratio cassette you plan to run, plus the 18T difference in rings I would think running a long cage would probably be a good idea.

What are you setting up for? Keep in mind that a 53-11 is going to provide a higher gear than 60-13.
re: would I need a long cage derailleur with this config ?wielerpret
Apr 24, 2003 1:23 AM
Campy manufactures long cage rear derailleurs to be used with the 13 - 29 cassette only (and two front blades; try campagnolo.com). I'm surprised at learning of your 60 front blade. Even the strongest pro sprinters would't go for such an extreme. They'd rather take 54 x 11 for the final few yards or a descent. A 60 will seriously limit your options on the flat. Shifting 60 x 29 is not to be recommended, nor is 42 x 13. It will be noisy if at all possible, and ruinous for your drivetrain. With a 60 blade you should seriously mind your knees, mate! With 42(39!)-52 and 12-25 one can go most anywhere. Cheers. Luke. Amsterdam. www.iwaarden.com
You can get just the long cage...PdxMark
Apr 24, 2003 6:53 AM
to replace short/med cage, if you already have a Campy derrailleur. The part is the same for Chorus/Record. When I last checked, the cage was about $50US, and the whole new derailleur was about $120 (Chorus), so it seemed a toss-up to me whether it was worth replacing just the cage.
Yes...but why?sievers11
Apr 25, 2003 1:47 PM
Why are you are you putting together such a weird configuration? All you are doing is adding extra weight. I am not sure what the chain lengths are, but wouldn't you get the same or similar ratios with a smaller cassette and chainrings? And save weight.