Cracked Campagnolo Titanium Cassette carrier

Discuss light weight issues concerning road bikes & parts.
User avatar
jbf
Posts: 215
Joined: Tue May 25, 2004 10:53 pm
Location: CT, USA

by jbf

Has anyone ever seen this? Campagnolo 21-23-25 titanium joined cogs off a 11-25 Record cassette. I gave it a good cleaning yesterday and discovered the cracked cassette interface. Do you think this would hold up after it is torqued down or is it now a paperweight?


Image


Image

eric
Posts: 2196
Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
Contact:

by eric

Paperweight, unless you want it to fail when you're cranking out of the saddle on a 15% grade, causing you to smash your gonads on the top tube.

by Weenie


User avatar
bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

Sadly it's a paperweight.

Yours is the first reported case that I've seen with Campy 11-speed in what, over 5 years now?

There's a thread discussing similar issues with Shimano DA 11-speed too.

Although some or most of those issues seem to involve big guys putting down a lot of torque in the low gears.
Last edited by bikerjulio on Mon May 12, 2014 1:51 pm, edited 1 time in total.
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

bm0p700f
in the industry
Posts: 3388
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
Contact:

by bm0p700f

Not much of a paper weight though as those things are light. I hope mine does not give up as a full Ti cassette is expensive. New cassette time I'm afriad bad luck.

kode54
Posts: 1102
Joined: Tue May 23, 2006 9:39 pm

by kode54

you can just replace those three cogs in the set. use the rest of your cassette.

like others have said...i've never seen that.
- AX Lightness Vial EVO D + DA9150 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
- Parlee ESX + DA9150 + THM SRM PM + Enve SES 6.7 CK hubs
- Independent Fabrication Ti FLW + DA9100 + Enve 3.4 CK hubs

User avatar
bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

OP just for the record, how big and powerful are you? It turned out that the first Shimano poster was an ex track sprinter.

Just asking.
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

User avatar
jbf
Posts: 215
Joined: Tue May 25, 2004 10:53 pm
Location: CT, USA

by jbf

bikerjulio wrote:OP just for the record, how big and powerful are you? It turned out that the first Shimano poster was an ex track sprinter.

Just asking.


I hate to admit it, I am a fit 55 year old 155 lb rider who does lots of miles but have never owned a power meter so cannot comment on power. Draw your own conclusions.

User avatar
bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

I hate to admit it, I am a fit 55 year old 155 lb rider who does lots of miles but have never owned a power meter so cannot comment on power. Draw your own conclusions.


well, good for you :D anything can be fixed now.

https://www.youtube.com/watch?v=8r9er8I_Fqs
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

User avatar
kbbpll
Posts: 402
Joined: Wed Oct 20, 2010 5:56 am

by kbbpll

What's with the scarring/pitting in four places around the surface? In the closeup it looks pretty nasty. Were you missing a spacer? If not, what did the spacer look like? Those teeth look pretty worn too - how old / how many miles on it? Had you ever serviced it before? When I cleaned my Chorus cassette for the first time after being built, one of the spacers came apart into three pieces in my hand, shop warrantied it. Said Campy told them the torque on the lockring was supposed to be 15 nm instead of the 40 (?) stamped on it. This makes me curious if it's an over-torqued issue. The crack and the scars make it look like it was really mashed.

Edit - sorry, I realize now that there is no spacer at the 25 cog.

Oswald
Posts: 792
Joined: Thu Jan 08, 2004 10:11 pm

by Oswald

Teeth don't look worn to me. But might have been overtorqued, judging by the marks.

User avatar
Max Gravity
Posts: 534
Joined: Sat May 26, 2007 11:57 am

by Max Gravity

If you can't warrant it I would try giving it as zap with a TIG welder.
Less torque more loctite on the aluminum lockring if you ask me.
Max Gravity, unfairly treated by gravity!

mrfish
Posts: 1604
Joined: Wed Mar 28, 2007 12:49 pm
Location: Near Horgen, Switzerland

by mrfish

Personally I wouldn't bother welding this given it's a part-worn cassette. Campag might warranty it, and even if they don't, it looks as though you got some distance out of the cassette. Certainly don't ride it. Talk to your friendly LBS, then if they can't help, buy another and move on.

Causidicus
Posts: 325
Joined: Tue Apr 17, 2012 11:20 am

by Causidicus

.
Last edited by Causidicus on Wed Jun 18, 2014 1:08 am, edited 1 time in total.

rijndael
Posts: 395
Joined: Tue Sep 20, 2011 12:54 pm
Location: Haines, AK - Temporarily

by rijndael

Please explain the details that lead you to believe it's an installation issue, rather than a material issue.

by Weenie


kode54
Posts: 1102
Joined: Tue May 23, 2006 9:39 pm

by kode54

rijndael wrote:Please explain the details that lead you to believe it's an installation issue, rather than a material issue.


looks overtorqued. the small pitted marks around the contact surface look uneven and dug into.
- AX Lightness Vial EVO D + DA9150 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
- Parlee ESX + DA9150 + THM SRM PM + Enve SES 6.7 CK hubs
- Independent Fabrication Ti FLW + DA9100 + Enve 3.4 CK hubs

Post Reply
  • Similar Topics
    Replies
    Views
    Last post