Dura Ace 9000 - ETA late 2012/early 2013

Discuss light weight issues concerning road bikes & parts.
upside
Posts: 601
Joined: Fri Mar 09, 2007 1:26 am
Location: USA

by upside

Lucky guy.. Let us know how you like the group. The stuff isn't showing up in the USA till next week, but would like to grab a group. :beerchug:

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Guerdi
Posts: 393
Joined: Mon Jan 15, 2007 5:27 pm
Location: Switzerland

by Guerdi

Nice old school (7400?) lettering on the chain's packaging.

by Weenie


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SvenNijs
Posts: 152
Joined: Mon Dec 20, 2010 9:25 am
Location: Sydaaneeeee

by SvenNijs

upside wrote:Lucky guy.. Let us know how you like the group.

Seconded.

tcurtbike
Best Freak bike poster
Posts: 426
Joined: Mon May 25, 2009 9:34 am
Location: VIC, Australia

by tcurtbike

Why are the shifter internals so exposed? My biggest gripe with 7900 is that dirt, sweat and water can get inside the shifter body so easily.

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Foghat
Posts: 24
Joined: Sat Nov 03, 2012 12:03 pm

by Foghat

Well, have taken delivery of various 9000 components here in the UK, but still need the as-yet-unavailable 12-28 cassette and brakes before I can finish building the bike.

Anyway, does anyone have the definitive answer on backwards compatibility of the chainset with earlier HollowTech II bottom brackets? Various reviewing websites have commented on the fact that the new one is still HollowTech II, but with some changes in design and dimensions, and giving no indications as to whether they are effectively interchangeable.

FairWheel Bikes had this to say:
The spindle remains the same 24mm diameter while the bottom bracket itself gets smaller. The cup shrinks but will come with a plastic sleeve that increases its outer diameter during installation so that existing Shimano BB tools will work with it.

RoadCC:
You’ll be pleased to know that Shimano haven’t come up with a new bottom bracket standard although they have reduced the size of the bearing they use to save a little weight. The cup diameter is also reduced so you need to use a special tool when fitting, and Shimano say they've improved the sealing. The 9000 Series will come in a standard external version and in a press-fit option.

So, has anyone used a non-Shimano, or a 7900/7800, bottom bracket with the new Dura Ace 9000 chainset? If so, did it just fit as normal? Presumably the critical factors are the length and diameter of the chainset spindle - we know it remains 24mm in diameter, but is it still the same length?

I have a nice unused Hope unit that I would like to use if possible.

Thanks for any information.
Freight-train groove-ride: 4'02" to 14'40" LOUD, bass right up and eyes closed!

spartan
Posts: 1107
Joined: Fri Sep 03, 2004 2:52 am

by spartan

the crankset will work with any current bb used with 7900 da crankset. visit praxis face book they have a pair of 9000 cranks installed to bb30 conversion kit..
Current Rides:

2017 Giant TCR Advanced SL 0 DI2 9150

AptosBigRing
in the industry
Posts: 66
Joined: Mon Apr 04, 2011 9:59 pm
Location: Santa Cruz, CA
Contact:

by AptosBigRing

9000 is the Hollowtech II 24mm spindle.
Our BB30/PF30 Conv BB is quickly becoming the Go-To BB for many shops getting ready to install the 9000 crank onto these frames.
Rock solid. Give us a call or email if any questions!

Here is some info that we just sent out. - http://campaign.r20.constantcontact.com/render?llr=6hiviyhab&v=001gjTeQvTgjpoYAleDdzGbBJTtEjT9XvcQ1jEBh3M6kKhwTLRd3mHMhmVT42FowlCOETn9KjwtcACoAMqKuL0wPyscZm1fQT54b_f7twh87oTjrvzHT3yaAUmnVcur8ExW

Adam@Praxis
Praxis Works
Manufacturer
Praxis Works
Manufacturer
Santa Cruz, CA
www.praxis-works.com

mann2
Posts: 75
Joined: Sun Nov 04, 2012 11:36 am

by mann2

Greetings from the Philippines!

been riding this for a couple of weeks, 50/34 with 11-28 at the back.

my personal experience is consistent with all the reviews. front shifting is sublime, brakes are much improved coming from the 7900. shifters feel much better in your hand and the rear shift effort stays consistent over every cog. overall, a worthy upgrade over the 7900.

Image
Last edited by mann2 on Sun Nov 04, 2012 12:47 pm, edited 1 time in total.

upside
Posts: 601
Joined: Fri Mar 09, 2007 1:26 am
Location: USA

by upside

I work for a Trek dealer and noticed they had a few pieces of Dura Ace 9000 come into stock. I ordered everything I needed and should have it Friday. I also picked up the Praxis BB30 adapter to use the new Dura Ace crank. I have been on Sram for a couple of years now and anyone that has used the new 9000 says it great. Now I have to decide on wheels. I could build up some 9000 hubs with Open Pro's, also noticed Trek has the 11 sp conversion for the DT Swiss 240/180 hubs. I'll let you know when I'm done.

spartan
Posts: 1107
Joined: Fri Sep 03, 2004 2:52 am

by spartan

so

2012 sram red weight

11-28 160
crank 50-34 600
bb 110
rderailleur 148
fderailleur 65
chain 262
shifters 300
brakes 252
+++++++++++++++++++
total 1897


dura ace 9000

11-28 190
crank 50-34 620
bb 75
rderailleur 159
fderailleur 65
chain 253
shifters 363
brakes 293
+++++++++++++++++++
total 2018


dura ace 9070

11-28 190
crank 50-34 620
bb 75
rderailleur 217
fderailleur 114
chain 253
shifters 237
brakes 293
+++++++++++++++++++
total 1999
Current Rides:

2017 Giant TCR Advanced SL 0 DI2 9150

sbkidd
Posts: 19
Joined: Sun Sep 26, 2010 1:55 am

by sbkidd

Shouldn't the weight of the DA 9070 include the battery and harness? Don't think it will function without it. I rode the 9000 on a Evo Black yesterday and it makes 7900 seem like junk.

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Gearjunkie
Posts: 767
Joined: Tue Feb 19, 2008 5:17 am
Location: NZ

by Gearjunkie

Cool. And what did you think of the Evo Black?

sbkidd
Posts: 19
Joined: Sun Sep 26, 2010 1:55 am

by sbkidd

Gearjunkie wrote:Cool. And what did you think of the Evo Black?

Coming off a 13.5 lb SuperSix I wouldn't say there's a huge difference in the frames, but the 9000 makes it feel like a different bike. The Evo Black sure is nice to look at though. I changed the seat to a Aliante, and with Speedplays and bottle cages a 60cm bike was 12.75.

commfire
Posts: 140
Joined: Thu Oct 22, 2009 11:14 pm

by commfire

Any idea when we will see the c35 and c50 clinchers? Seems like everything oem has the c24 only?

by Weenie


Geoff
Posts: 5098
Joined: Sat Dec 13, 2003 2:25 am
Location: Canada

by Geoff

Hmmmmm. My friends at GreenEdge said that Shimano is having difficulty with the delivery of DA9000 Di2, so they can't get me my bike until Spring... :cry:

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