Campagnolo Chorus HO Rear Derailleur

Discuss light weight issues concerning road bikes & parts.
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stormur
Posts: 1182
Joined: Tue Aug 12, 2014 3:50 pm
Location: FIN

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 ?
Go to Heaven for the climate, Hell for the company.
Mark Twain


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duende
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Joined: Sun Jan 11, 2015 9:07 am

by duende

Go regular unless you are after running a 32 in the rear.

by Weenie


raisinberry777
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Joined: Wed Jul 30, 2014 1:09 am

by raisinberry777

All Campag rear derailleurs for the 2018 season are the 'HO' models, including those for mechanical groups.

stormur
Posts: 1182
Joined: Tue Aug 12, 2014 3:50 pm
Location: FIN

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 ?
Go to Heaven for the climate, Hell for the company.
Mark Twain


I can be wrong, and have plenty of examples for that ;)

mag
Posts: 91
Joined: Thu Mar 16, 2017 12:23 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.

stormur
Posts: 1182
Joined: Tue Aug 12, 2014 3:50 pm
Location: FIN

by stormur

that would mean ALL derailleurs are now for disc brakes frames only ? / "optimized for 142 rear spacing" /
Go to Heaven for the climate, Hell for the company.
Mark Twain


I can be wrong, and have plenty of examples for that ;)

mag
Posts: 91
Joined: Thu Mar 16, 2017 12:23 pm

by mag

They can be used with rim brake setups as well.

joejack951
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Location: Wilmington, DE

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.

by Weenie


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ultimobici
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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.

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