vespasianus

Hello everyone and sorry for the naive question. But I am thinking of buying frame and building up the bike with Campagnolo components. I have done MTBs for a long time but never actually built up a road bike.

The question I have is that I was going to use Campagnolo H11 shifters and brake calipers (disk). But I thought I could save some cash by using an 11 speed Centaur front derailleur with a Potenza Disc brake specific Crankset (I don't know if I need this), a Potenza medium cage rear derailleur, an Ultegra 11-32 cassette (cheaper and lighter) and a SRAM 11 speed chain. I know, some mixing and matching but it should work, right?

Thanks again and be gentle!

DaveSSS 

Shimano sprocket spacing is close to Campy, but not the same, so you won't get the full experience. Be sure that the RD can handle an 11-32.

I'm not a fan of Campy shifters, below the Chorus level.

The Chorus 12 group is much better and has an 11-29, 11-32, or 11-34 cassettes. I switched two bikes over to it last July. To me, it's well worth the $1060 that I paid for each rim brake group. I bought from pinkjersey.com. The disc brake version does add a lot to the cost.

I see the chorus 12 disc group for $1400 at Texas cyclesport. That's $220 more than potenza and well worth it.

HillRider

How is a crankset "disc brake specific"?

alcjphil

Different chainline to account for the wider spacing on disc wheels

vespasianus

The 12 speed was just too much of a price jump for the disk version. I should mention the H11 shifters are carbon and a step above the Potenza shifters (carbon blade). The big question I have now is if the Centaur front derailleur will work. Not sure why it would not. Two rings are two rings. Right? I did get the medium cage derailleur so it should work.

They make some claim that the crankset is optimized for the 142 rear end. Not sure how much I believe that.

Litespud

IIRC the disc-specific cranks shift the chainline out (to the right) by 4.5mm to accommodate the wider dropout spacing (and the consequent shift of the cassette further from the centerline of the frame) of disc-specific frames. It's not a huge difference, but if you use a standard crankset, you might see some issues, particularly when on the smaller sprockets - maybe some rubbing when on small:small

Litespud

IIRC the disc-specific cranks shift the chainline out (to the right) by 4.5mm to accommodate the wider dropout spacing (and the consequent shift of the cassette further from the centerline of the frame) of disc-specific frames. It's not a huge difference, but if you use a standard crankset, you might see some issues, particularly when on the smaller sprockets - maybe some rubbing when on small:small

canopus 

Don't you just miss the good ol' days of calling up Phil Wood and telling them you need a wider BB on the drive side instead of changing out cranks...

tomato coupe

H11 is Record / Super record level.

The figure that's usually tossed around is 2.5mm, but even that seems to be an urban legend. A Campagnolo factory rep on the Weight Weenies forum says the inner chain is shifted outwards 0.2mm and the outer chain ring is shifted outwards 1.0mm.

I have three H11 setups – two with H11 cranks and one with a standard Campy (5 arm) crank. There's no noticeable difference in the shifting, and no rubbing with the standard crank.

DaveSSS 

A centaur fd would not be made for the wider spacing of a disc crank. The fd is one of the chaper parts. There can't be much money to be saved.

Litespud

Yeah, I don't know where I came up with the 4.5mm number. I've been hunting around the interwebz looking for a specific crankset and I thought I came across a discussion addressing this - could've misremembered - or imagined it . A quick look just now has some publications stating 2.5mm, which is based on the logic that if the rear dropout spacing is 5mm larger, the cassette must shift 2.5mm out, so the crankset must shift by the same amount. Makes sense, but pure speculation, as Campagnolo themselves aren't saying anything. As your experience suggests, it likely makes no difference except it gives Campagnolo an opportunity to sell you more stuff

vespasianus

Thanks. I think the centaur 11 speed crank would be fine with a 142 rear end.

JohnDThompson 

You still can: "Custom spindle lengths and cartridge widths are available upon special request."
https://phil-wood-co.myshopify.com/c...ottom-brackets

DaveSSS 

Try the pace line forum. There is one long time campy expert who knows just about everything. https://forums.thepaceline.net/

vespasianus

OK. I will cross post there as well. Thanks. Got lots of good information here so am feeling much better.

fietsbob

IDK is the crank spindle fixed to the crank arm? the new external bearing stuff is..

I believe Potenza is on the lower end of Campag's price range .. of late..


can you refer to web page links on all of those components & Campag part numbers?

cut on the blind guessing, 20 questions approach..





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