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Old 05-23-11, 12:56 PM   #1
buzz111
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Non-standard chainring combinations

I've got a campagnolo centaur ultra-torque 10sp crank with the standard 39/53 double chainring combination. I'd like to switch to a different combination, but Campagnolo doesn't offer this option.

I did find Campi-compatible chainrings with various tooth counts on this site. Do these work well (shifting, durability)? Can I run any combination as long as I don't exceed the rear derailleur capacity?

http://www.ribblecycles.co.uk/sp/roa...ng/STROCHRI500

http://www.ribblecycles.co.uk/sp/roa...pd/TAAACHRI350
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Old 05-23-11, 01:16 PM   #2
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so what combination Do you want? 39 is as small as you can fit on 135 bolt circle,
39 is it , so there is a bigger small ring and smaller big ring.
7075 aluminum is good , Stronglight and TA make top notch spare chainrings.
so you will be reducing the wrap capacity required of your Rear derailleur

Cyclocrossers often switch to a smaller big ring, on their cranksets.
the Paris Roubaix racers swap in a bigger small ring.
so it's all fine.
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Old 05-23-11, 01:23 PM   #3
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if you don't mind mixing stuff, then you can always switch out your crankset for a shimano or sram offering.
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Old 05-23-11, 04:19 PM   #4
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Quote:
Originally Posted by fietsbob View Post
so what combination Do you want? 39 is as small as you can fit on 135 bolt circle,
39 is it , so there is a bigger small ring and smaller big ring.
7075 aluminum is good , Stronglight and TA make top notch spare chainrings.
so you will be reducing the wrap capacity required of your Rear derailleur

Cyclocrossers often switch to a smaller big ring, on their cranksets.
the Paris Roubaix racers swap in a bigger small ring.
so it's all fine.
Hey thanks for the info... I wasn't sure if the non-oem rings work well. I was surprised that there were so few ring options from campagnolo when I started looking into this.

After running Sheldon's gear calculator I'm probably going to run 39/48 so your're absolutely right that derailleur capacity is not an issue. I was just so happy to find such a large range of rings that I was looking at all the combinations Now I'll finally be able to put my 12-25 cassette to good use!
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