|Opinions on Campy 13-29 cassette please||GileyD|
Mar 6, 2003 9:11 AM
|On my winter / distance bike I have been running a triple for a couple of years and have really got to appreciate the low gearing on the very steep climbs around here (16% + is common) and on longer rides, audaxes, centuries etc.
On my "best" bike I run 39/53 with a 12-25 cassette (Campy 10 Centaur). I have been toying with the idea of fitting a 13-29 cassette to give me a serious climbing gear. I have no problem getting up the local climbs (albeit often out of the saddle to save my knees!) but it can be a different story at the end of a long ride. I am also going on a long cycling weekend to Scotland in May and intend to ride all the big climbs.
I have slight concerns about fitting this cassette though, namely:
Does having a 29 cog mean the rest of the ratios are too spaced out? I don't race but like to ride hard and maintain a regular cadence.
Given that I tend to run the chain long enough to cover an accidental "big-big" shift, will there be a lot of excess chain flapping about when lower down the cassette on the 39 ring?
Any thoughts from those who have experience with this appreciated.
(PS am I correct in thinking the standard Centaur medium cage rear mech will handle this ok?)
|re: Opinions on Campy 13-29 cassette please||ukiahb|
Mar 6, 2003 9:24 AM
|I have 13-29 and a medium cage mech (Chorus) on my bike and it works fine....gear spacing is almost identical to the 12-25, you are just giving up the 12 to gain the 29. If you do buy a cassette I'd go with Centaur rather than Chorus as the paired 17-19 cogs on my Chorus cassette are creaky and the Centaur uses seperate cogs and is a little cheaper too...should be less potential for creaking as only two cogs are paired rather than six.|
|How do the ratios compare 39/29 to your triple?||Spunout|
Mar 6, 2003 9:32 AM
|If well installed and adjusted, there is not a problem with chain slap. Med. cage RD runs great, as it should. Gearing is great, you get a 16 cog.
Are you touring loaded? You may need that bailout gear then.
|re: Opinions on Campy 13-29 cassette please||tarwheel|
Mar 6, 2003 10:20 AM
|The only downside to the 13-29 cassette, in my view, is the lack of a 12 gear for long downhills. Other than that, it has just about the same gears as a 12-25. All the middle gears are the same, you just lose the 12 and substitute a 26 for the 25. You will need a medium cage rear derailleur for the 13-29. After using the 13-29 for a while, I tried a 13-26 and found no real benefit to it. You gain an extra gear in the middle (18 I think), which I hardly noticed, and lose that granny gear which is really essential when you need it. |
What's funny to be is why so many cyclists worry about spaced gearing when you can still get a pretty tight cluster even with the 13-29. When you compare the gearing to an old 6 or 7-speed bike, which many of us older cyclists rode for years, a 13-29 has closer gears and more range than most old bikes. Since I rode for many years with a wider ratio, the 13-29 doesn't feel spread out a bit.
|Short cage with 13-29?||Overhill|
Mar 6, 2003 4:39 PM
|Iv'e heard it said that you can run a 13-29 with a short cage Record 10 rear drlr, but have neither seen or tried it. I am tempted to try a 13-29. Will it work with the short cage? If not, can the short cage drlr be modified, or does one need a new drlr? Thanks.|
|Short cage with 13-29?||Spunout|
Mar 7, 2003 4:58 AM
|It will run, but you have to watch your gearing combinations. Setup your chain by being the longest that can be handled while in 39/13. NEVER go past 53/26: Your $200 RD will explode. Fiddle the adjustments so it climbs to the 29 easily.
OTOH, you only have to buy the medium cage sans pulleys to convert the RD. Available from your friendly neighbourhood Campagnolo dealer.