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Campagnolo Chorus HO Rear Derailleur

Posted: Sat Aug 05, 2017 8:11 pm
by stormur
It's described as
A. for disc brake frames
B. "optimized" for 142 dropouts

I wonder what about 135... to go regular Chorus or HO ... Any ideas ?

Campagnolo Chorus HO Rear Derailleur

Posted: Sat Aug 05, 2017 8:11 pm
by Weenie

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Sat Aug 05, 2017 11:27 pm
by duende
Go regular unless you are after running a 32 in the rear.

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Sat Aug 05, 2017 11:49 pm
by raisinberry777
All Campag rear derailleurs for the 2018 season are the 'HO' models, including those for mechanical groups.

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Sun Aug 06, 2017 12:12 am
by stormur
I see this different way ; from 2018 there's NEW series of RD called "HO" optimized for disc braked frames. "2015" or "non HO" RD's didn't disappeared from offer...

it doesn't answer my question , isn't it ?

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Sun Aug 06, 2017 12:17 pm
by mag
Well, in the official 2018 price list there are only RD18 (HO) derailleurs listed so they don't seem to complement the current (RD15) ones, but rather replace them.

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Sun Aug 06, 2017 6:27 pm
by stormur
that would mean ALL derailleurs are now for disc brakes frames only ? / "optimized for 142 rear spacing" /

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Sun Aug 06, 2017 11:13 pm
by mag
They can be used with rim brake setups as well.

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Mon Aug 07, 2017 1:21 am
by joejack951
stormur wrote:It's described as
A. for disc brake frames
B. "optimized" for 142 dropouts

I wonder what about 135... to go regular Chorus or HO ... Any ideas ?


Two things:

1. 142mm is just 135mm dropout spacing with 3.5mm alignment pockets for the axle ends.
2. I am using a 2016 Chorus RD with a 142mm spaced frame and no issues. I think you'll be fine whichever way you go.

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Mon Aug 07, 2017 11:30 pm
by ultimobici
HO refers to the changes made to the jockey wheels that helps IF you are using discs and consequently wider spacing. It has no detrimental effect on a regular 130mm spaced set up using calliper brakes. 2015 mechs are no longer available from Campagnolo. All mechs for 2018 are HO.

Re: Campagnolo Chorus HO Rear Derailleur

Posted: Mon Aug 07, 2017 11:30 pm
by Weenie