Need help with Campy shifter install

Discuss light weight issues concerning road bikes & parts.
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Noctiluxx
Posts: 823
Joined: Tue Feb 07, 2017 7:17 pm
Location: Southern California

by Noctiluxx

I'm transitioning from Shimano Di2 to Campy SR 12-spd mechanical on my 2018 De Rosa SK Pininfarina. The issue is with shifter cables. My mechanical told me he needs a cable guide specific to this bike. I bought this frame brand new but never received a cable guide of any type. Full disclosure, my mechanic is brilliant, easily the best in town, though he works primarily on Shimano and Sram 99% of the time. He told me and I know this myself, the internal carbon on this frame is extremely sloppy and would making shifting rough unless I had the cable guide made specifically made for this frame. I'm hoping there is simple solution otherwise I'll take my bike to a Campy specialist Bike Effect in Santa Monica to complete the build.
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2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

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Calnago
Posts: 8608
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

Is that a “legit” De Rosa? If so, call or email them and ask what is up with the mechanical routing option. I suspect there must have been some sort of guide with the frame initially but since it was a Di2 install it got lost in the shuffle. Or, I wonder if they intended there to be a full length run of derailleur housing from through the top tube all the way though to the derailleurs. Would be weird, and there would have to be a stop somewhere along the way for the front derailleur. Sure you don’t want to stick with electric in that frame?... as any time I see mechanical cable routing through the top of the top tube like that, it screams bad bends and compromised shifting. I really have to wonder about design choices manufacturers make sometimes. In any case, it’s not a Campy issue, it’s a frame design issue. You’d have the same dilemma with Shimano 9100.
Colnago C64 - The Naked Build; Colnago C60 - PR99; Trek Koppenberg - Where Emonda and Domane Meet;
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by Weenie


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Miller
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Joined: Thu Sep 21, 2006 8:54 pm
Location: Reading, UK

by Miller

Looks to me like full length housing is required. There should/could be a cable stop for the front mech at the back of the BB shell, accessible through the hatch.

Zakalwe
Posts: 549
Joined: Sun Jun 17, 2012 3:15 pm

by Zakalwe

Definitely stick to electronic because that routing for mechanical is seriously messed up. It’s almost as if Pininfarina aren’t actually bicycle designers

robertbb
Posts: 1177
Joined: Thu Jul 23, 2009 3:35 am
Location: Melbourne, Australia

by robertbb

I just want measurements/pics of your 25mm contis on the bora ultra... :lol:

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Noctiluxx
Posts: 823
Joined: Tue Feb 07, 2017 7:17 pm
Location: Southern California

by Noctiluxx

Zakalwe wrote:
Mon Dec 17, 2018 9:19 pm
Definitely stick to electronic because that routing for mechanical is seriously messed up. It’s almost as if Pininfarina aren’t actually bicycle designers
Neither is De Rosa!
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

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Noctiluxx
Posts: 823
Joined: Tue Feb 07, 2017 7:17 pm
Location: Southern California

by Noctiluxx

robertbb wrote:
Mon Dec 17, 2018 9:21 pm
I just want measurements/pics of your 25mm contis on the bora ultra... :lol:
Measurements?
Attachments
IMG_4015.jpg
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

robertbb
Posts: 1177
Joined: Thu Jul 23, 2009 3:35 am
Location: Melbourne, Australia

by robertbb

Noctiluxx wrote:
Mon Dec 17, 2018 9:54 pm
robertbb wrote:
Mon Dec 17, 2018 9:21 pm
I just want measurements/pics of your 25mm contis on the bora ultra... :lol:
Measurements?
Yep, measurements... as in, how wide do they measure at 100PSI? they look a fair bit wider than the rim width

(Thanks for the pic... great looking rig!)

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Noctiluxx
Posts: 823
Joined: Tue Feb 07, 2017 7:17 pm
Location: Southern California

by Noctiluxx

robertbb wrote:
Mon Dec 17, 2018 11:31 pm
Noctiluxx wrote:
Mon Dec 17, 2018 9:54 pm
robertbb wrote:
Mon Dec 17, 2018 9:21 pm
I just want measurements/pics of your 25mm contis on the bora ultra... :lol:
Measurements?
Yep, measurements... as in, how wide do they measure at 100PSI? they look a fair bit wider than the rim width

(Thanks for the pic... great looking rig!)

Don’t have a digital caliper, but based on a conventional tape measure, the tires are a tick under 1” at 100 psi. I have the two pairs of Bora Ultras wheelset, both with Conti GP 4000 SII’s, and hands down the best wheels I’ve ever owned.
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

AJS914
Posts: 3604
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

They should be 27mm. I just fit the same tires to my C59 on 25mm wide (18mm internal) rims. The biggest problem with GP4000s is that they are tall.

https://www.bicyclerollingresistance.co ... i-23-25-28

robertbb
Posts: 1177
Joined: Thu Jul 23, 2009 3:35 am
Location: Melbourne, Australia

by robertbb

Noctiluxx wrote:
Tue Dec 18, 2018 2:18 am
robertbb wrote:
Mon Dec 17, 2018 11:31 pm
Noctiluxx wrote:
Mon Dec 17, 2018 9:54 pm
robertbb wrote:
Mon Dec 17, 2018 9:21 pm
I just want measurements/pics of your 25mm contis on the bora ultra... :lol:
Measurements?
Yep, measurements... as in, how wide do they measure at 100PSI? they look a fair bit wider than the rim width

(Thanks for the pic... great looking rig!)

Don’t have a digital caliper, but based on a conventional tape measure, the tires are a tick under 1” at 100 psi. I have the two pairs of Bora Ultras wheelset, both with Conti GP 4000 SII’s, and hands down the best wheels I’ve ever owned.
Cheers for that! Yep, I also have two sets of Bora Ultra 35's; tubular (had for a few years, used sparingly for alpine climbing) and now I just picked up some clinchers to use regularly. Best wheelset money can buy!

Sorry to derail the thread :)

by Weenie


wilwil
Posts: 376
Joined: Thu Sep 23, 2010 5:47 pm

by wilwil

Its sold as electronic or cable. My guess is that BB plate is replaced with one with indents and cable entry and exit holes. Bike shops are really good at losing the small parts that come with frames.

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