Dura Ace 9000 cassette; top two cogs creaking...

Discuss light weight issues concerning road bikes & parts.
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TheDarkInstall
Posts: 723
Joined: Sun Jan 26, 2014 3:44 am

by TheDarkInstall

Hey

We have all read the massive thread about the second 3-cog, nylon mounted cluster cracking, but have any of you had any issues with the metal mounted top arrangement of 2 cogs?

I am currently 'enjoying' creaking with my Dura Ace cassette mounted to an Extralite CyberRear SP. It comes and goes, and only really kicks in when I am gurning my way up 12% + climbs, in 34-28, in a high torque situation. The creaking does not occur on any other cogs apart from the top two, in any riding scenario, so it is definitely something happening here.

I have tried putting various things like automobile brake assembly paste, and copper slip on the splines, to no avail.

So, anyone had any creaking with the top two cogs? I realise it might be an issue with the Extralite freebody splines and how they interact with the Dura Ace cassette splines, but thought I would ask.

I have checked the splines for gouges, twists and warps in the metal, and there is nothing...

by Weenie


uraz
Posts: 76
Joined: Thu Dec 12, 2013 9:48 pm

by uraz

Did you tighten lock ring to 40-45NM?

Brus
Posts: 38
Joined: Mon Apr 25, 2016 1:36 pm

by Brus

mine is creaking in the same way. Not always, sometimes.

uraqt
Posts: 810
Joined: Mon Apr 03, 2006 8:53 am

by uraqt

its a bad cassette, Shimano should replace it with a cassette that will also fail.. there is a massive thread about it here some place..


C

cunn1n9
Posts: 73
Joined: Sat Jan 15, 2011 1:24 am

by cunn1n9

I have it but only on lowest gear (biggest cog). Only when power is high enough so sounds like some movement is cause of noise


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uraqt
Posts: 810
Joined: Mon Apr 03, 2006 8:53 am

by uraqt

Yep the metal gears/pins/rivets are rubbing in the carbon carrier. If the creak they will fail .. get them replaced...

here is the thread with pix...

viewtopic.php?f=3&t=118879

TheDarkInstall
Posts: 723
Joined: Sun Jan 26, 2014 3:44 am

by TheDarkInstall

Hi

-lock ring tightened properly.
-I realise there is a massive thread but the focus of that was the middle cluster mounted to the nylon composite carrier, not the top cluster mounted to metal, hence my new thread.
-yes, this is absolutely an issue with movement. Just want to know his to eliminate it.
-uraqt; I am not talking about the middle cluster mounted to the composite carrier. Read my initial post :)

Bit more info;

This always occurs after I have done a big climb, and then when I start the next one on a ride. Movement is definitely the issue here. I do think that the Extralite freebody plays a part in this, as well as the cassette itself.

uraqt
Posts: 810
Joined: Mon Apr 03, 2006 8:53 am

by uraqt

The carbon carrier is the top cluster not the middle ... closest to the spokes

C

Nejmann
Posts: 363
Joined: Mon May 06, 2013 6:25 pm

by Nejmann

It's a fault in the design. It sounds awful.

TheDarkInstall
Posts: 723
Joined: Sun Jan 26, 2014 3:44 am

by TheDarkInstall

uraqt wrote:The carbon carrier is the top cluster not the middle ... closest to the spokes

C


You have to be trolling.

uraqt
Posts: 810
Joined: Mon Apr 03, 2006 8:53 am

by uraqt

Sorry, I'm wrong.

I forgot and hadn't taken mine out of the box in two years.

C

by Weenie


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