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PostPosted: Tue Jan 03, 2017 6:56 am 
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Joined: Fri Jan 25, 2013 7:26 pm
Posts: 255
Patient: 5-year-old Chris King R45 Campagnolo Hub w/ a Campy 11-29 cassette

Possible Preconditions: Rain ride

Disease Onset: Short 15-20% hill, halfway up some believed chain skipping

Disease Presentation: Locked drivetrain, misaligned axle

Physical Examination:

Driveshell about 2-3mm off center
Image

Most notched Campy freehub evah
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Chunks coming off aka worst weight weenie tuning evah
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Image


DX aka what the hell happened?


Last edited by beeatnik on Tue Feb 07, 2017 6:30 pm, edited 3 times in total.

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Posted: Tue Jan 03, 2017 6:56 am 


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PostPosted: Tue Jan 03, 2017 7:21 am 
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Joined: Thu Jan 19, 2012 11:17 am
Posts: 161
Location: bottom edge of Australia
From the top image - The freehub bearings have collapsed if the freehub body is off centre.


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PostPosted: Tue Jan 03, 2017 7:28 am 
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Posts: 255
^In the 3rd and 4th pictures you can see parts of the free hub which shredded off. I lost the small shards which showed the inner threads. The deep gouging must have occurred just before the hub failed (play?) as the freehub was pristine a few weeks ago.


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PostPosted: Tue Jan 03, 2017 7:38 am 
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Location: bottom edge of Australia
Does the axle smoothly rotate through the body OK? If so then the hub bearings should be OK.

Does the freehub body smoothly freewheel OK? If so the freehub body bearings should be OK.

The bite / shred marks all over the freehub spines look like the cassette was moving on the body ie) maybe lockring was not correctly torqued?


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PostPosted: Tue Jan 03, 2017 7:58 am 
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Joined: Fri Jan 25, 2013 7:26 pm
Posts: 255
^No axle rotation.

Freehub essentially came off the hub body. Wheel rubs against chainstay in the dropouts.

Before failing, I now recall that there were a few instances when the chain seemed to skip on steep grades.

I previously used a 12T CK lockring for a 12-27 cassette. A few months back I swapped out to an 11-29 using the 11T CK lockring.


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PostPosted: Tue Jan 03, 2017 2:54 pm 
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Joined: Sun Jan 26, 2014 3:44 am
Posts: 723
First of all, well done. That is impressive, no matter how you did it.

Take is apart and get a load of in-focus photos of the various parts. Would love to see what is going on inside.

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PostPosted: Tue Jan 03, 2017 11:40 pm 
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Joined: Tue Mar 27, 2012 4:35 pm
Posts: 33
I'm currently now on my 4th Campy freehub for my three year old Chris King rear hub. Each freehub cracked, causing chain slipping/slap & inability to spin in reverse. I'm not blessed with the technical knowledge help you with your problem, but might be something to look in to, as they are generally hairline cracks. Good luck.


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PostPosted: Wed Jan 04, 2017 1:43 am 
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Joined: Fri Jan 25, 2013 7:26 pm
Posts: 255
yikes, cracks seem to be the culprit(s) here as well

fun pics:

Image

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crackz is wackz
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Servicing is so easy

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Bearings and pawls (engagement) seem qoo
Image

Image


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PostPosted: Wed Jan 04, 2017 4:51 am 
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Posts: 161
Location: bottom edge of Australia
That's a catastrophe.

Never seen that before........ yikes indeed - you powerful animal you...........


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PostPosted: Wed Jan 04, 2017 6:06 am 
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Joined: Sun May 16, 2010 7:28 pm
Posts: 1166
New freehub and you should be good to go, no?


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PostPosted: Wed Jan 04, 2017 8:48 pm 
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Joined: Tue May 23, 2006 9:39 pm
Posts: 1064
you may need to replace the wheel bearings as well as the entire free hub. i've never seen that destroyed like that...and it doesn't look water related from riding in the rain.

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PostPosted: Thu Jan 05, 2017 9:12 am 
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Joined: Mon Jun 01, 2009 5:53 pm
Posts: 66
I had also a problem with the rear hub R45 Campagnolo, bearings exploded in 5 tkm and 2,5 year, minimal of rain seen.

Talked to my LBS, would not help me and also CK left me in the cold, reason with those kilometers and years they have been serviced......

I am very disappointed in the product Chris King, will never buy it again bad product!


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PostPosted: Fri Jan 06, 2017 7:33 am 
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Joined: Sun Jan 26, 2014 3:44 am
Posts: 723
Haha, that is full on destruction.

Wonder what Chris King will have to say about this...

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PostPosted: Fri Jan 06, 2017 11:36 am 
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Joined: Mon Jun 01, 2009 5:53 pm
Posts: 66
TheDarkInstall wrote:
Haha, that is full on destruction.

Wonder what Chris King will have to say about this...


They will do nothing, is my experience !


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PostPosted: Fri Jan 06, 2017 11:45 am 
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Joined: Mon Jul 07, 2014 8:15 am
Posts: 1731
Location: NorthEU
^
Atleast they must have been leaving you with some sort of comment on this?

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Posted: Fri Jan 06, 2017 11:45 am 


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