Campagnolo Chorus Freehub/Lockring Woes

frieddoh · #1 02-27-2014, 08:34 PM

Hi Everyone,

This is my first posting, a pal of mine on the board recommended that I ask for some advice from the community, so here I am.

I am in the process of a new bike build and have hit a roadblock with the rear wheel. The lockring for the cassette does not thread onto the freehub which seems to be a common occurrence. Went to LBS, they said could be lockring, could be freehub... an that I could replace either but should start with some gentle persuasion to get beyond the threads that are not catching. Spent a while tonight persuading with no success... I don't think such nice bits and pieces deserve a hack/kludge/square peg in a round hole.

Here are the particulars of what I have on hand sourced from various sellers:
Campagnolo Chorus hubset (9 to 11 cassette)
Mavic open pro SUP clincher rims, 36 holes
Campagnolo Record 10 speed cassette with & lock ring

I think that the cause of the problem is that the freehub threads are toast

My plan is to replace both the lockring and the freehub, but I'm unsure of what I need in terms of part numbers for lockring and freehub. The freehub job looks doable but it may be worthwhile to let LBS get the job.

Thanks for your help, it is greatly appreciated!

I've attached photos for reference,

Dan
Durham, NC

oldpotatoe · #2 02-27-2014, 08:39 PM

Quote:

Originally Posted by frieddoh

Hi Everyone,

This is my first posting, a pal of mine on the board recommended that I ask for some advice from the community, so here I am.

I am in the process of a new bike build and have hit a roadblock with the rear wheel. The lockring for the cassette does not thread onto the freehub which seems to be a common occurrence. Went to LBS, they said could be lockring, could be freehub... an that I could replace either but should start with some gentle persuasion to get beyond the threads that are not catching. Spent a while tonight persuading with no success... I don't think such nice bits and pieces deserve a hack/kludge/square peg in a round hole.

Here are the particulars of what I have on hand sourced from various sellers:
Campagnolo Chorus hubset (9 to 11 cassette)
Mavic open pro SUP clincher rims, 36 holes
Campagnolo Record 10 speed cassette with & lock ring

I think that the cause of the problem is that the freehub threads are toast

My plan is to replace both the lockring and the freehub, but I'm unsure of what I need in terms of part numbers for lockring and freehub. The freehub job looks doable but it may be worthwhile to let LBS get the job.

Thanks for your help, it is greatly appreciated!

I've attached photos for reference,

Dan
Durham, NC

You have a 9s wheel, yes a 10 and 11s cogset will fit but the lockring with the 10s cogset is too large. Need a lockring with '9speed' on it. Steel axle, 1997, early 1998 hub. 10s happened in 2000, aluminum axle hubs.

Jim@vecchios.com has them, about $26.

frieddoh · #3 02-27-2014, 08:46 PM

Thanks oldpotatoe! Will drop Vecchios a line.

nighthawk · #4 02-27-2014, 09:48 PM

I think you need a 26 mm lockring, specifically. I believe there were 26 and 27 for 9 speed. Trying to thread a 27mm lockring onto that hub will just spin and not catch the threads.

oliver1850 · #5 02-27-2014, 10:24 PM

I had someone tell me they have a 27 mm lockring that's labeled "9 speed". Every one I've handled marked 9 speed has been 26 mm. I would specify 26 mm when ordering to be clear, or part number CS-201 (12-13T) or CS-301 (11T).

nighthawk · #6 02-27-2014, 10:30 PM

I know you can currently buy 9 speed cassettes that come with 27mm lockrings, but the lockring isn't labeled 9 speed. That's why I mentioned it.

Ken Robb · #7 02-27-2014, 11:09 PM

Gee, I never had this problem with Shimano.

buldogge · #8 02-27-2014, 11:11 PM

I guess you stayed away from Dura Ace, or haven't decided to move up to 11.

-Mark in St. Louis

Quote:

Originally Posted by Ken Robb

Gee, I never had this problem with Shimano.

donevwil · #9 02-27-2014, 11:14 PM

Quote:

Originally Posted by Ken Robb

Gee, I never had this problem with Shimano.

Sure, but that jump to 11 will be a real bitch.

thirdgenbird · #10 02-27-2014, 11:43 PM

Quote:

Originally Posted by Ken Robb

Gee, I never had this problem with Shimano.

Yeah, their problems are much worse.

Dura ace freehubs:
Uniglide
Hyperglide 7
Hyperglide 8 (9 and 10)
7800
11spd

cekte · #11 02-28-2014, 12:12 AM

Yes, as some folks previously mentioned, you will need a 26.0mm 9 speed Campagnolo lockring. Specifically 26.0mm as Campagnolo made both 27.0mm and 26.0mm with the "9 Speed" markings on it. I have gotten several of each over the years and still have a few of each to positively verify.