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Old 01-19-08, 01:29 PM   #1
tcmers
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Campy compact crank?

I've got a Bianchi Veloce with 9 speed veloce components. I'd like to swap out the standard Veloce crank for the compact. It looks like I'll need to change the bottom bracket. I believe the standard crank takes a 111mm and the compact takes a 102mm. Has anyone made this change? Will the standard front deraileur work ok? I've heard that the compact specific isn't needed, but am looking for some first hand info. The compact cranks I've found are listed as 10 spped. Any compatibility concerns with a 9 speed drive train? Thanks!

One more thing...My Bianchi is an 03 model. (made in Italy) Does anyone know if these are English or Italian thread bottom brackets?

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Old 01-19-08, 07:34 PM   #2
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You've asked all the right questions.

If you are buying a 2008 FR der from Campagnolo, they are now all ST and CT compatible. If you are buying a new crankset it will be Ultra Torque (UT) which includes the BB cups and bearings.

If you are staying with a square taper BB you need 111mm. 102 is for Record and Chorus.

If you are buying a FR Der that is 2007 or older, you need a CT specific Der. It matters.
If you buy a braze-on der, buy a Campagnolo clamp. The Shimano ones can cause the tail of the der to rise, affecting shifting. Also the radius where the der mounts into the clamp is slightly different for the two. This can cause a campagnolo fr der to slide out of alignment over time if used on a Shimano clamp.
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Old 01-20-08, 03:28 PM   #3
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Just to add my $0.02: a compact crank on a pre-2007 Campy setup doesn't require the CT-specific front mech to work properly. In my experience, the non-CT front mech works better on my own setup than did the CT-specific: crisper shifting, no thrown chains, no excess rub in the extremes.
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Old 01-20-08, 06:09 PM   #4
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Quote:
Originally Posted by songfta View Post
Just to add my $0.02: a compact crank on a pre-2007 Campy setup doesn't require the CT-specific front mech to work properly. In my experience, the non-CT front mech works better on my own setup than did the CT-specific: crisper shifting, no thrown chains, no excess rub in the extremes.
I can't count the number of service calls I've received that were solved by adding the CT Fr der to the CT crankset. As I mentioned in my first post, the braze-on positioning and shape can affect the performance of a Campagnolo set-up if it is welded for Shimano (or if a Shimano clamp is used). It is also possible that it will have no effect or might make a normally border-line situation tenable. The later is far less likely, in my experience.
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Old 01-20-08, 07:19 PM   #5
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Thanks for the input. If the 111 bottom bracket is what I need, then I'm all set. I think I'll install the compact crank and try it with the existing veloce deraileur first. If it doesn't work, I'll swap the der.
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Old 01-26-08, 09:52 AM   #6
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I found a Centaur 10 speed compact (50/34) crank on clearance at Nashbar. After discounts, the crank, tool and shipping came to $72. Thought that was a great deal! I changed it out last night. All I had to do was lower the der. slightly and adjust the cable tension. I've only ridden it on the trainer, but so far, it shifts as well as it ever did. Still running the nine speed chain, etc. Seems to work great. Maybe these old legs will be able to tackle some of those hills a little better this year! Thanks for all of the input.
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