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PostPosted: Sun Nov 23, 2014 3:37 am 
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Joined: Wed Apr 11, 2012 3:40 am
Posts: 628
I see the 2015 revolution front dérailleurs can be had with or without "S2". What exactly is it? Campy's website isn't helping and my google fu is failing me.


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PostPosted: Sun Nov 23, 2014 4:02 am 
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Joined: Sat Feb 07, 2009 5:52 am
Posts: 399
It refers to the tab or lever which bolts onto the top of the mounting. The tab is adjustable to sit against the seat tube and stiffen the base assembly for improved shifting.


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PostPosted: Sun Nov 23, 2014 4:52 am 
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Joined: Tue May 04, 2010 1:02 am
Posts: 46
It is a stiffener that presses against the seat tube to counter the flex of thin-walled tubing, should your bike have such an issue. The new FD does up to 45Nm of shifting force to the big ring versus the 32Nm of the 2014 and below design.


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PostPosted: Wed Nov 26, 2014 2:00 am 
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Shop Owner / Manufacturer

Joined: Mon May 26, 2008 12:21 pm
Posts: 162
Location: UK
To gently correct Fishyskawa, it's more to counter flex in the front derailleur mounting itself, than flex resulting from a thin tube wall ... the new-design 2015 FDs are all available either with or without S2 fittings - it's only some FD mounts that are insufficiently rigid as to require the additional stabilisation of the FD in order to give good shifting.

Of course it will never be a problem to use S2 if you don't really need to ...

HTH
Graeme
Velotech Cycling Ltd
UK Main Campagnolo SC

_________________
A Tech-Reps work is never done ...
Head Tech, Campagnolo main UK ASC


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