Advice on short or medium cage rear derailleur

[thinpin]

Putting a 50/34 front CT on a new dirt road bike. Using a 12/25 cassette. Which size derailleur is best suited to this combo? Oh I'll be running camapg centaur stuff. It seems to be a grey spot. Thanks Guys

[WickedWheels]

It all depends on your age and shape.
If you're planning on getting in much better shape go with the short cage, it will work fine.
If you're planning on getting older, go with the long or mid cage so that you can eventually fit the 13-29t on there.
:D

[93LegendTG]

Campagnolo states that with their compact crankset you may use the short cage rear in all applications except with the 13-29 where a medium cage is required. Actually, a short cage will shift just fine with the 13-29, you just have to stay away from the 50/29 combination, (which you shouldn't use anyway). Short answer: short cage.

[thinpin]

Thanks chaps

[Birch]

Campagnolo states that with their compact crankset you may use the short cage rear in all applications except with the 13-29 where a medium cage is required. Actually, a short cage will shift just fine with the 13-29, you just have to stay away from the 50/29 combination, (which you shouldn't use anyway). Short answer: short cage.

Hmph... so I picked up a med RD for the 13-29 for nuttin'? ugh. :crap:

[Pete Serotta]

go with the med cage.....it works just as well just a "smidge" heavier