Campag Centaur 10 speed 34t chainring

[SteveParry]

Possibly 50t too. Ideally to match my Centaur Carbon Compact (Ultratorque) crankset with 5 holes. My inner is v worn and causing a scraping sound when pedalling. I understand the early 11 speed rings may also fit but not certain about this.

 

[mrushton]

Appears to be the hidden bolt version. I may have something in storage.Will check today.

Update. Only 36 I'm afraid but I do have a silver TA 49t in that configuration ie 5 arm hidden bolt 110bcd

 

[SteveParry]

Thanks, I'll hold out for a 34. Didn't know about the hidden bolt thing.

 

[mrushton]

It goes in behind the crank and is offset. Such is the Campag way. Will look again if I have a 34 but have a look at TA as an alternative. BCD is 110 and Nerius is the TA line I think

 

[gbb]

Wasn't sure if I had a very nearly brand new set of Campag MPS 10 sp chainrings of that size dug them out...oh well, theyre 53/39..so different PCD as well id think.
Id have gladly given them FOC.

If theyre of use to anyone, same applies, FOC. Bikes long gone, I dont do roadbikes anymore so theyre just clutter to me.

 

[SteveParry]

Bought a new TA Nerius 9/10 speed 34t 110 BCD ring from e^ay. Also discovered the bolts are not 5mm Hex as thought - they are Torx. Now to find a torque wrench. Any suggestions for a budget model?

 

[berty bassett]

Can look tomorrow if you want ! Used to run same set up and I am not known to throw things away !

 

[SteveParry]

The bolts are supposed to be T27 torx; looks like two of mine might be T30 - perhaps a bodge by previous owner. But I have both T27 and T30 to hand. I just had delivered the giant Park Tool 10mm hex wrench from Amzn - with a 30 day return. Before I use it I wondered if I can remove the chainrings while leaving the crank in place? Would the 34t inner ring slide over the crank spider? If so I could simply return the 10mm hex wrench.

 

[Pblakeney]

The bolts are supposed to be T27 torx; looks like two of mine might be T30 - perhaps a bodge by previous owner. But I have both T27 and T30 to hand. I just had delivered the giant Park Tool 10mm hex wrench from Amzn - with a 30 day return. Before I use it I wondered if I can remove the chainrings while leaving the crank in place? Would the 34t inner ring slide over the crank spider? If so I could simply return the 10mm hex wrench.

You could, but you will probably need it at some point in the future. BB's don't last forever.
That said, my foul weather bike was bought in 2011 with a Chorus crankset and is still smooth and without play. Decisions, decisions...

 

[berty bassett]

The bolts are supposed to be T27 torx; looks like two of mine might be T30 - perhaps a bodge by previous owner. But I have both T27 and T30 to hand. I just had delivered the giant Park Tool 10mm hex wrench from Amzn - with a 30 day return. Before I use it I wondered if I can remove the chainrings while leaving the crank in place? Would the 34t inner ring slide over the crank spider? If so I could simply return the 10mm hex wrench.

You can take rings off without crank , it’s a bit of a faff but you can - it’s teeming down here today , j will go in shed tomorrow morning and post on here