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Re: DA 9000 cables

Posted: Tue Oct 15, 2013 7:42 pm
by HammerTime2
Is there going to be a CS-9001? I'm sure you all remember this thread Dura Ace 9000 11 speed cassette- rubish product design.

Re: DA 9000 cables

Posted: Tue Oct 15, 2013 11:09 pm
by Svetty
Seems like Shimano have realised the problem but no sign of a recall/ replacement scheme :-(

Re: DA 9000 cables

Posted: Tue Oct 15, 2013 11:23 pm
by rijndael
Yea, that's disappointing.

Re: DA 9000 cables

Posted: Mon Oct 28, 2013 5:47 am
by virenque
ST-9001 VS ST-9000

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Re: DA 9000 cables

Posted: Mon Oct 28, 2013 5:48 am
by virenque
ST-6800 VS ST-9001

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Re: DA 9000 cables

Posted: Mon Oct 28, 2013 6:59 am
by petal666
Svetty wrote:Seems like Shimano have realised the problem but no sign of a recall/ replacement scheme :-(


Same with the 7900 and 7901 chains (removal of quicklink)

Re: DA 9000 cables

Posted: Mon Oct 28, 2013 8:46 am
by OwenJames
Aside from the slight ergonomic reworking, the main thing I see here is the cable guide thingy, which was what I initially thought was causing the hassle in the first place.

So, any chance you can post a picture of the other side of the cable guide thingy, so we can have a look at the part which touches the cable.

It was my thoughts from the beginning that the 'fin' element of the 9000 cable guide thingy, that presses into the body of the shifter, would be constantly in contact with the cable and causing wear.

Show us the other side of the 9001 cable guide thingy, and maybe we can modify the ones we have on our 9000s to match.

Alternatively, I was considering just taking it out completely and running it without. Has anyone tried that?

Cheers

Re: DA 9000 cables

Posted: Thu Nov 07, 2013 11:59 pm
by addicted
When are the 9001 shifters supposed to hit the UK vendors??

Re: DA 9000 cables

Posted: Fri Nov 08, 2013 5:20 am
by Ceebers1
The new Shimano Poly cables have much less friction than their PTFE 7900 cables, as well as most any other shift cables.

The coating doesn't bunch up like it does on other coated cables, so it remains very slick for a long time.

Last year I was at a Park Tool Summit Clinic and they had 4 Orca's built with 9000 DA, only difference being the cables, and no mechanic there doubted the overwhelming lack of friction on the bike with 9000 cables.

Re: DA 9000 cables

Posted: Wed Nov 13, 2013 12:58 pm
by Svetty
Anyone have 9001s they can photo to show revised cable guide as per OwenJames' post above?

Re: DA 9000 cables

Posted: Thu Nov 14, 2013 7:48 am
by Roundabout
Admittedly I've only been on the system for three months, but the polymer cables and appropriate housing run through Ultegra 6800 shifters and derailleurs has been working brilliantly for me. Much lower friction and zero issues. The polymer itself does get scuffed up at the ends if you aren't careful, but has had no appreciable difference on shift quality.

Re: DA 9000 cables

Posted: Fri Nov 15, 2013 9:08 pm
by Zigmeister
Does this apply to Di2 and those shifters on the 9070? Haven't heard this issue with those.

Re: DA 9000 cables

Posted: Fri Nov 15, 2013 10:23 pm
by OwenJames
Zigmeister wrote:Does this apply to Di2 and those shifters on the 9070? Haven't heard this issue with those.


LOLWOT?

Let's think about this for a second; the Dura Ace 9000 cables are snapping due to a cable routing issue putting excessive stress on the bend which sits inside the shifter, which causes grossly accelerated wear.

Di2 uses electronic cables to send an electronic signal from the shifter to the front / rear mech. The electrical cable does not move, and is not subject to any friction / stress as part of the standard operation.

So no, LOL, this does not affect Di2.

:shock:

Re: DA 9000 cables

Posted: Sat Nov 16, 2013 12:59 am
by goodboyr
If the electrons have to make a sharp turn in the cable that might lead to localized heating and cable failure. :-)

Re: DA 9000 cables

Posted: Fri Jan 02, 2015 12:38 am
by 5DII
Question for you guys.

Any functional/tactile differences between 6800 and 9001 shifters?

Asking because I recently upgrade my components from 6800 to 9000 (going to put the 6800 components on the TT bike). Didnt buy the shifters yet though. Ignoring price, cable snapping and weight, are the 9001 shifters better than the 6800 shifters in any way?