HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Articles FAQ Contact About




Post new topic Reply to topic  [ 19 posts ] 
Go to page 1, 2  Next
Author Message
PostPosted: Sat May 10, 2014 10:03 pm 
Offline
User avatar

Joined: Tue May 25, 2004 10:53 pm
Posts: 213
Location: CT, USA
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


Top
 Profile  
 
Posted: Sat May 10, 2014 10:03 pm 


Top
  
 
PostPosted: Sat May 10, 2014 10:34 pm 
Offline

Joined: Tue Nov 11, 2003 9:47 pm
Posts: 1813
Location: Santa Cruz, California, USA
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.


Top
 Profile  
 
PostPosted: Sat May 10, 2014 10:35 pm 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1128
Location: Toronto
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.

_________________
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


Last edited by bikerjulio on Mon May 12, 2014 1:51 pm, edited 1 time in total.

Top
 Profile  
 
PostPosted: Sat May 10, 2014 10:40 pm 
Offline
in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 1621
Location: Glermsford, Suffolk U.K
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.

_________________
www.thecycleclinic.co.uk


Top
 Profile  
 
PostPosted: Sat May 10, 2014 10:42 pm 
Offline

Joined: Tue May 23, 2006 9:39 pm
Posts: 352
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.

_________________
- Parlee Z5 SLi + DA9070 + Enve 3.4 Tune/Dash hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


Top
 Profile  
 
PostPosted: Sun May 11, 2014 12:46 am 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1128
Location: Toronto
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


Top
 Profile  
 
PostPosted: Sun May 11, 2014 1:03 am 
Offline
User avatar

Joined: Tue May 25, 2004 10:53 pm
Posts: 213
Location: CT, USA
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.


Top
 Profile  
 
PostPosted: Sun May 11, 2014 1:21 am 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1128
Location: Toronto
Quote:
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


Top
 Profile  
 
PostPosted: Sun May 11, 2014 5:21 am 
Offline
User avatar

Joined: Wed Oct 20, 2010 5:56 am
Posts: 333
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.


Top
 Profile  
 
PostPosted: Sun May 11, 2014 7:15 am 
Offline

Joined: Thu Jan 08, 2004 10:11 pm
Posts: 730
Teeth don't look worn to me. But might have been overtorqued, judging by the marks.


Top
 Profile  
 
PostPosted: Sun May 11, 2014 9:18 pm 
Offline
User avatar

Joined: Sat May 26, 2007 11:57 am
Posts: 534
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!


Top
 Profile  
 
PostPosted: Mon May 12, 2014 8:42 am 
Offline

Joined: Wed Mar 28, 2007 12:49 pm
Posts: 1581
Location: Near Horgen, Switzerland
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.


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 12, 2014 10:45 am 
Offline

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


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

Top
 Profile  
 
PostPosted: Mon May 12, 2014 11:06 am 
Offline

Joined: Tue Sep 20, 2011 12:54 pm
Posts: 395
Location: Haines, AK - Temporarily
Please explain the details that lead you to believe it's an installation issue, rather than a material issue.


Top
 Profile  
 
Posted: Mon May 12, 2014 11:06 am 


Top
  
 
PostPosted: Mon May 12, 2014 11:55 am 
Offline

Joined: Tue May 23, 2006 9:39 pm
Posts: 352
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.

_________________
- Parlee Z5 SLi + DA9070 + Enve 3.4 Tune/Dash hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 19 posts ] 
Go to page 1, 2  Next


Who is online

Users browsing this forum: Bing [Bot], Google [Bot], Google Adsense [Bot], ipaul and 50 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Campagnolo Zonda cracked rim

in Road

marcio riva

12

1826

Fri Jul 04, 2014 11:26 am

kavitator View the latest post

There are no new unread posts for this topic. 11 speed Titanium cassette options (shimano/sram)

in Road

prebsy

5

582

Wed Oct 08, 2014 6:03 pm

vdrey View the latest post

There are no new unread posts for this topic. KCNC titanium shift cable with Campagnolo Ultrashift?

in Road

dreweckhardt

3

648

Thu Apr 10, 2014 3:38 am

NiFTY View the latest post

There are no new unread posts for this topic. 11-28 11spd Campagnolo cassette available?

[ Go to page: 1, 2, 3 ]

in Road

RedRacer

43

1556

Sun Oct 12, 2014 6:12 pm

RedRacer View the latest post

There are no new unread posts for this topic. Hacking a Campagnolo 11-29 cassette?

in Road

colster

8

969

Wed Sep 17, 2014 1:52 pm

graeme_f_k View the latest post


It is currently Fri Dec 26, 2014 10:33 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB