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PostPosted: Fri Feb 26, 2016 4:04 pm 
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Posts: 429
Below is an excerpt from the Campy Compatibility manual on their site. I was surprised to know that the 11/29 cassette is not compatible with the EPS drivetrain. Has anyone experienced issues with this setup?

http://www.campagnolo.com/media/files/0 ... _09_15.pdf

2 - SPROCKETS COMPATIBILITY
WARNING!
For complete functionality of the EPS system the dimensions of the compatible chainrings or sprockets cannot be chan- ged.
11S SPROCKETS
11-23

11-25
11-27
12-25
12-27
12-29
Important – compatibility note: the 11-29 sprocket pack is not compatible with the EPS groupsets.


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PostPosted: Fri Feb 26, 2016 5:42 pm 
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Wow, given the cost of those expensive Campy cassettes I'm very relieved I ordered 12-29 and not 11-29 with my upcoming SR EPS V3 setup. Had no idea!
Seems it has something to do with the difference between smallest and largest cog then. Thanks for the info.


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PostPosted: Fri Feb 26, 2016 7:14 pm 
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Location: Bristol uk
Used my 11/29 in the alps last year worked a treat

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PostPosted: Fri Feb 26, 2016 7:15 pm 
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Same - I have 11-29 on mine and no Issues

EPS V2


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PostPosted: Fri Feb 26, 2016 7:39 pm 
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cool -- good to know as i intend to do the same.


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PostPosted: Fri Feb 26, 2016 7:50 pm 
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Location: Bristol uk
Just wondering why they say it wont work,if the eps will go to 29 on 12/29 why would it not go on 11/29 :noidea: don't make sense to me.

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PostPosted: Fri Feb 26, 2016 8:22 pm 
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markyboy wrote:
Just wondering why they say it wont work,if the eps will go to 29 on 12/29 why would it not go on 11/29 :noidea: don't make sense to me.


i think a lot of factors come into play, i.e., chainring combo, chainstay length, RD hanger length, etc.

that said, it may work for some and not for others (hence the general disclaimer that "it will not work"). using non-campy cranks/chainrings may further complicate the issue.


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PostPosted: Sat Feb 27, 2016 3:58 am 
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Eps v2, no problems with 11-29 at all


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PostPosted: Sat Feb 27, 2016 6:07 am 
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It would definitely be good to know "why" they say it isn't compatible with eps. That way, it would be easier to check out to see if it actually applies to your own situation or not. Have not tried it myself.
I tend to heed these types of statements unless I am very aware of the pitfalls of doing it differently and am sure that whatever departure I take will not be an issue, but it's always on a case by case basis. Nothing worse than when something blows up when you least expect it and leaves you saying "Aahhh, I get it now, so that's why they say it's not compatible". How much is a new EPS rear derailleur anyway.

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PostPosted: Sat Feb 27, 2016 6:40 pm 
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Even the tech manual "allows" 11-29.

Weird.


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PostPosted: Sun Feb 28, 2016 8:33 am 
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mattr wrote:
Even the tech manual "allows" 11-29.

Weird.

Does it? Can't see any mention of it on their site.


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PostPosted: Sun Feb 28, 2016 9:18 am 
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Location: NorthEU
Maybe it's been a "silent update" and they forgot to change at the web?
Or,... maybe they claim it will not work because it might not work with all frames/ wheels?
I mean, they go for the safe route instead of having clients getting mad because it will not work with their specific frame/ wheel combo!?

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PostPosted: Sun Feb 28, 2016 9:25 am 
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The reason is that EPS mechs have the same geometry as the previous generation 11 speed mechs. While they may shift an 11-29, the shifting is not optimal.


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PostPosted: Sun Feb 28, 2016 11:28 am 
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@ultimobici: Interesting, thanks. But do you you know specifically what it is that is suboptimal? I would like to test it out and look for it; do kind of a comparison if you will.

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PostPosted: Sun Feb 28, 2016 11:39 am 
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Calnago wrote:
@ultimobici: Interesting, thanks. But do you you know specifically what it is that is suboptimal? I would like to test it out and look for it; do kind of a comparison if you will.

From experience of running 11-29 with 52/36 and 52/34 I think it is simply that in order to clear the 29 one needs to adjust the "H" screw to such a point that the mech sits too low at the opposite end of the cassette. So shifting in the 11-12-13 suffers in quality.


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