Cross compatible Chorus and Record 10 speed? One last check.

[jamesdak]

So, finally getting around to the build on the Olmo frame I've had waiting in the wings for awhile now.

I have a square taper Record 10 speed groupset and a Chorus Ultra Torque 10 speed groupset.

What I want to do is use the Chorus Ultra Torque crank with the Record shifters, FD, RD, and brakes. I can't find anything that says it won't work but I want to make sure. Basically I prefer a 172.5 crank which the Chorus one is and it's got carbon arms that match this build better than the silver. There's also a minor tear on the bottom of one of the Chorus hoods as well as the FD for it being a clamp on and I need a braze on. The record meets this need.

So just doing one final check with the knowledgeable ones here before I start down this path. Any reason why this won't work? Thanks!

The group:



The Crank part number:



The frame as I plan to use it. Save for getting a new black stem without the out of place red on it.

[old fat man]

10 speed is 10 speed as far as campy goes. Heck, I've run 11 speed shimano cranks with 10 speed campy drivetrain without issue for years.

You can't find any info because it's an obvious non-issue

[KJMUNC]

Yep, what he said.....obviously gotta use the Campy BB cups required to install the crankset, but otherwise the derailleurs and shifters don't know the difference.

[Pegoready]

Match made in heaven. It will work perfectly.

There was an era ~2007 with Ultra Torque + 'pre-Gumby' levers so it's not even a hack workaround. They were designed for each other.

Like this bike:

[C40_guy]

I read "cross compatible" and was wondering whether you were going to run cantis or vbrakes...

I don't think those Campy calipers will have much mud clearance.

[rwsaunders]

I’ve been using an 11-speed Athena compact crank for several years with 10-speed Ergos, derailleurs and chain…no issues.

[thwart]

You’re going to lose major style points for mixing and matching a bit .

In Shimano-speak: You’re asking whether you can run a 10 spd Ultegra crank on an otherwise DA 10 spd drivetrain.

Cool Olmo, BTW. That should be lovely with those parts hung on it.

[jamesdak]

Thanks all!

One final question. It appears the only outboard cups I have in my stash Super Record with a warning inside not to use with Record Cranks. So....

I've got a used silver set of cups that are also Italian 36 x 24 but don't know if these came with this groupset or can be used or not. Don't see any other part markings on them.

Anyway to easily tell if they are compatible with the crank?

[thwart]

Originally Posted by jamesdak

Thanks all!

One final question. It appears the only outboard cups I have in my stash Super Record with a warning inside not to use with Record Cranks. So....

I've got a used silver set of cups that are also Italian 36 x 24 but don't know if these came with this groupset or can be used or not. Don't see any other part markings on them.

Anyway to easily tell if they are compatible with the crank?

Exactly right on the SR; IIRC they don’t have seals. The other versions do.

If your other cups are silver, they’re probably one of the early versions of the UT cups. Later versions are bronze or some sort of (ugly) greenish bronze color.

Some folks have had problems with the ‘loose tolerance’ of these early silver cups, but in my experience (mostly with Italian threaded ones also) they have worked out OK. And they’ll look much better on that Olmo.

[SDJ]

Re cups

I've used many different cups from SR to fulcrum with different UT cranks and never had any issues

[oldpotatoe]

Originally Posted by Pegoready

Match made in heaven. It will work perfectly.

There was an era ~2007 with Ultra Torque + 'pre-Gumby' levers so it's not even a hack workaround. They were designed for each other.

Like this bike:

Yup, Campagnolo jumped onto the external cup, UltraTorque bandwagon in 2007. 11s started in 2009.

Great design, UltraTorque but nothing wrong with square taper, except couldn't sell em in the 'external cup' world.

[C40_guy]

Originally Posted by oldpotatoe

...nothing wrong with square taper, except couldn't sell em in the 'external cup' world.

Only thing wrong with square taper is that they are unobtanium!

[jamesdak]

Originally Posted by C40_guy

Only thing wrong with square taper is that they are unobtanium!

I've been able to get them a couple of times recently from Excel Sports. They currently show them in stock.

https://www.excelsports.com/campagno...bottom-bracket

The core BB is the same either Italian or British. I've also been able to find the cups for these on Ebay cheap and brand new. So it still doesn't seem that hard right now to source what you need, or at least in my case, what I needed.

[tandem2]

The bottom brackets and BB parts are easy to find. But the square taper 10-speed cranksets, those are hard to find, but really great cranksets, especially the 50/34s

Jody

[tandem2]

On the compatibility question, I’m using 10-speed Centaur shifters with a new Chorus 11-speed RD, and 10-speed cassette. It shifts perfectly.

Jody