Campy Cassette Size / Rear Derailleur Q

[srenda]

Does anybody know max cassette size one can run with a 10 speed short cage rear derailleur (08 Centaur)? Searched the archives, but couldn't tell from what's out there what's possible. Can one run a 13-29 with the short cage or is the medium required? TIA.

[dd74]

Does anybody know max cassette size one can run with a 10 speed short cage rear derailleur (08 Centaur)? Searched the archives, but couldn't tell from what's out there what's possible. Can one run a 13-29 with the short cage or is the medium required? TIA.
I run 13-29 with my short cage Record 11 RD, so unless anything's changed between 10 and 11, I'm sure you can also run 13-29.

[thirdgenbird]

What chainrings do you have? I think you need a medium cage to run the 29 with a compact.

[Ralph]

You can usually make the short cage work. But a med cage will probably shift better. It can take up chain slack better on a front down shift. But if you already have the short cage, I bet it will work fine.

I have both short and med cage Campy derailleirs, and have been experimenting with how they both shift when I'm operating the short cage slightly beyond it's rated capacity. After adding 2 links to chain, I think the med cage shifts better in those 30 plus tooth differences (add difference in front teeth to difference in rear cogs). Lately I've been shifting to med cage for some combinations, even though the short cage will work.

[srenda]

Thanks all, am running 53/39, will give a 13/29 a shot, see what happens...

[Ralph]

Thanks all, am running 53/39, will give a 13/29 a shot, see what happens...

Am sure it will work fine.

[zmudshark]

Running that combo on most of my bikes, no issues.

[pdmtong]

Running a short cage and 13-29. No difference versus medium cage and 13-29 on other bike

This is r10.

[Pete Mckeon]

Thanks all, am running 53/39, will give a 13/29 a shot, see what happens...

the effects of that combo will very likely be :eek::mad:

and ask yourself why you need a 29 with a 53:confused: besides the no no of cross over at the extreme and wrap or the UNWRAP of potentially that no no



Pete

[pdmtong]

the effects of that combo will very likely be :eek::mad:

and ask yourself why you need a 29 with a 53:confused: besides the no no of cross over at the extreme and wrap or the UNWRAP of potentially that no no



Pete

Pete the point is to get the 53-13 for better top end and make the equivalent of a 34-26 on the low end. This was covered a few years ago by Brunk

[Pete Mckeon]

crank is 53x39 that he has. and cassette is 13x29. I said do not use 29 on big front 53.

53-13 is for fastest on flat or non hilly

and the 39x29 is best on his specific cranks, best very steep hill,

If he wants to get a compact crank 34x50 and leave for BIG hills

or in poor shape the 34front X29 rear is best used unless going to triple.

If riding the rockies and a non racer that 34x26 is going to be painful at times.

J:banana:ack Brunk is very fit and experienced AND far more in shape than us mere :bike: mortals. Wish I was a fraction of his fitness :mad:




Pete the point is to get the 53-13 for better top end and make the equivalent of a 34-26 on the low end. This was covered a few years ago by Brunk

[thirdgenbird]

Running a short cage and 13-29. No difference versus medium cage and 13-29 on other bike

This is r10.

This talk makes me tempted to trade one of my new 12-23s for a 13-29.

[Columbus SLX]

crank is 53x39 that he has. and cassette is 13x29. I said do not use 29 on big front 53.

53-13 is for fastest on flat or non hilly

and the 39x29 is best on his specific cranks, best very steep hill,

If he wants to get a compact crank 34x50 and leave for BIG hills

or he is in poor shape for the 34front X29 rear.

If he is riding the rockies and a non racer that 34x26 is going to be painful at times.

J:banana:ack Brunk is very fit and experienced AND far more in shape than us mere :bike: mortals. Wish I was a fraction of his fitness :mad:

Eh? No idea what you mean. 53-13 for downhills, 39-29 for up. Simple. I do it for moderately hilly events with a short cage RD and it works great if you avoid cross-chaining. In this setup I usually have at least 13 smooth ratios - 6 on the large chainring, 7 on the small. Correct chain length and good B tension = success.

[DRZRM]

I like the 13-29 so much (granted with a compact and a mid RD) that I got some of the new 12-30s. Awesome in SLC this summer.

[oldpotatoe]

Does anybody know max cassette size one can run with a 10 speed short cage rear derailleur (08 Centaur)? Searched the archives, but couldn't tell from what's out there what's possible. Can one run a 13-29 with the short cage or is the medium required? TIA.

Not required. I do this all the time w/o issue or problem. make sure the chain length is proper..not too short but enough chain for big-big...same for Centaur 12-30.

Somebody here has talked about RD hanger dimensions making it not work but I haven't seen one yet that doesn't.

[fiataccompli]

Minor data point: I have had success with 13-29 and short cage with 10 Record and Chorus (no reason to think it would matter what level Campy, right?) And a 39/53 crankset. That is my "heavy climbing" ride Campy setup at the moment and the only significant consideration is a different chain for this vs the one for my "usual" 12-25 cassette.

The only issue I have with it is my engineering mind is sort of offended that I am using extra chain links and larger cogs and chainrings for gearing ratios I could get with a compact....but that is more of a personal problem! Ha

[Dromen]

Not required. I do this all the time w/o issue or problem. make sure the chain length is proper..not too short but enough chain for big-big...same for Centaur 12-30.

Somebody here has talked about RD hanger dimensions making it not work but I haven't seen one yet that doesn't.

Compact verification: So my Centaur SC RD will work fine with a 50/34 - 29/13 setup with proper chain length?

[Dromen]

Nevermind. Found my answer.

[umami]

Here's an ancillary question, since we're on the topic. What length cage campy RD is needed to run 50-34 x 12-32? I had assumed this would require a long cage, but judging from the comments here, it sounds like a medium cage RD would suffice.

No, Campy doesn't make a 12-32. But IRD does...;)

[oldpotatoe]

Here's an ancillary question, since we're on the topic. What length cage campy RD is needed to run 50-34 x 12-32? I had assumed this would require a long cage, but judging from the comments here, it sounds like a medium cage RD would suffice.

No, Campy doesn't make a 12-32. But IRD does...;)

Medium or long, long being best. 2014 Athena, Centaur and Veloce have a long cage.