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  [ 18 posts ] 
Go to page 1, 2  Next
Author Message
PostPosted: Tue Jan 22, 2013 4:22 pm 
Offline

Joined: Fri Oct 28, 2011 3:25 am
Posts: 908
Location: United Kingdom of Great Britain and Northern Ireland
Can someone please tell me if the Dura Ace SM-BB9000 bottom bracket requires a different pattern fitting tool? Shimano docs say use a TL-FC34 or adapter TL-FC24. I notice that Cyclus are bringing out a new tool for this type of BB. And what is the Shimano 'adapter' actually for. Thanks.


Top
 Profile  
 
Posted: Tue Jan 22, 2013 4:22 pm 


Top
  
 
PostPosted: Tue Jan 22, 2013 4:36 pm 
Offline
Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1976
Location: NoVA/DC
The adapter fits into the "old" bb tool, to step it down to fit the new, smaller, bb. It comes with the new bb, so you won't have to buy a new tool.
cyclus and others are making tools that will directly fit this new bb.


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 5:07 pm 
Offline

Joined: Thu Jan 26, 2006 6:01 pm
Posts: 1561
I love that they are mucking with one of the most successful standards in the industry... for no real reason. Sram, Shimano, MTB, Road, FSA... Heck, even Campy use the same pattern on their UT cups. Hopefully it will go the way of the XTR M970 preload adjuster and crank extractor tool. Meh...


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 5:51 pm 
Offline

Joined: Sat Jul 29, 2006 2:36 am
Posts: 1189
Location: UK
Thought it was changed to reduce weight? We can't complain about that here!


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 5:58 pm 
Offline

Joined: Fri Oct 28, 2011 3:25 am
Posts: 908
Location: United Kingdom of Great Britain and Northern Ireland
5 8 5 wrote:
Thought it was changed to reduce weight? We can't complain about that here!


That's what Shimano claim - smaller bearings, 4 nanograms or whatever lighter. But we suspect that it is actually a pathetic attempt to subvert an existing standard that has found favour with consumers for purely commercial ends. Maybe us cyclists need more of a voice.


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 6:05 pm 
Offline

Joined: Sat Jul 29, 2006 2:36 am
Posts: 1189
Location: UK
But they include the adapter in the box. What's the problem with that?


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 8:31 pm 
Offline

Joined: Sun Oct 21, 2012 8:15 pm
Posts: 49
Valbrona wrote:
5 8 5 wrote:
Thought it was changed to reduce weight? We can't complain about that here!


That's what Shimano claim - smaller bearings, 4 nanograms or whatever lighter. But we suspect that it is actually a pathetic attempt to subvert an existing standard that has found favour with consumers for purely commercial ends. Maybe us cyclists need more of a voice.


The BB 9000 is 68 grams only! Is that reason enough to make the cup's OD smaller? Yes! If you don't think so then you're on the wrong site.
And there are no commercial ends to it as they supply the adapter with the BB for FREE!


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 8:32 pm 
Offline

Joined: Sun Oct 21, 2012 8:15 pm
Posts: 49
5 8 5 wrote:
But they include the adapter in the box. What's the problem with that?


Some people always need to complain about something.


Top
 Profile  
 
PostPosted: Tue Jan 22, 2013 8:39 pm 
Offline
User avatar

Joined: Sat Dec 06, 2008 10:14 am
Posts: 963
Location: Sweden
Also in theory less sealing drag with smaller bearings (less surface contact), and as the old standard held up well for downhill mountainbiking, they were likely a bit oversized for roadbikes... or so I'd reckon :)

_________________
Roadbike
Planet X Stealth w/ drop bars

Mountainbike
Van Nicholas Zion Ti


Top
 Profile  
 
PostPosted: Wed Jan 23, 2013 6:10 am 
Offline

Joined: Mon Feb 18, 2008 9:47 pm
Posts: 258
Location: CA
Valbrona wrote:
5 8 5 wrote:
Thought it was changed to reduce weight? We can't complain about that here!


That's what Shimano claim - smaller bearings, 4 nanograms or whatever lighter. But we suspect that it is actually a pathetic attempt to subvert an existing standard that has found favour with consumers for purely commercial ends. Maybe us cyclists need more of a voice.


How has the existing standard been "subverted"? The new BB is compatible with all existing and future thread-in frames AND is backwards compatible with all existing 24mm Shimano road cranks. I don't see a grand plot to subvert the consumer anywhere in either of those two facts. Oh, and it's lighter and more durable to boot.

_________________
Turn down the suck knob.


Top
 Profile  
 
PostPosted: Wed Feb 06, 2013 9:50 am 
Offline

Joined: Wed Feb 22, 2012 3:16 pm
Posts: 33
How much force does the adapter hold up for? I am thinking of installing this bb on one of my bikes since I need a new bb anyway and this gives almost free weightsavings. However the threading at the bottom of the frame is not perfect so installation tends to require some force. If the adapter is flimsy I may go for the old dura ace bb that I have a proper tool for.
Typically the biggest problem is getting the BB off again though, but by that time I suppose the TL-FC34 tool will be more widely available.


Top
 Profile  
 
PostPosted: Thu Feb 07, 2013 4:22 am 
Offline
Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1976
Location: NoVA/DC
The adapter is very tough. it is likely a fiber reinforced plastic. It is a very, very snug fit in all the socket type bb tools I've tried it on. I don't think you'll have a problem using the adapter multiple times, up to the 50Nm max.


Top
 Profile  
 
PostPosted: Thu Feb 07, 2013 10:38 am 
Offline

Joined: Wed Feb 22, 2012 3:16 pm
Posts: 33
Thanks for the info, I'll give the BB9000 a try then.


Top
 Profile  
 
PostPosted: Thu Feb 07, 2013 2:53 pm 
Offline

Joined: Fri Jan 04, 2008 3:44 pm
Posts: 6
Location: Florida
Not only is it slightly lighter but supposedly it also has 50% less drag. Sounds like a win-win.


Top
 Profile  
 
PostPosted: Thu Feb 07, 2013 5:48 pm 
Offline

Joined: Fri Oct 28, 2011 3:25 am
Posts: 908
Location: United Kingdom of Great Britain and Northern Ireland
If this new modified BB is so much better and so likely to revolutionize your riding with lighter weight and less drag ... why didn't Shimano Mega Corp with all its bike experts think of it first time around? The new BB is just different. They have made a part that is less durable on account of smaller bearings. That is 'swings and roundabouts' as we say in the UK.


Top
 Profile  
 
Posted: Thu Feb 07, 2013 5:48 pm 


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 18 posts ] 
Go to page 1, 2  Next


Who is online

Users browsing this forum: Baidu [Spider], Exabot [Bot], fromtrektocolnago, Google [Bot], Google Adsense [Bot], stormur, Yahoo [Bot] and 37 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. Shimano FC-9000 crank in Trek BB90 bottom bracket fitment

in Road

Gearhead65

3

646

Tue Mar 04, 2014 9:04 pm

FIJIGabe View the latest post

There are no new unread posts for this topic. Which PF 30 bottom bracket

[ Go to page: 1, 2 ]

in Road

mattlawro

21

2208

Wed Jun 25, 2014 2:28 pm

topflightpro View the latest post

There are no new unread posts for this topic. Truvativ FP-30 Bottom Bracket

in Road

Krull

6

300

Wed Oct 22, 2014 3:37 pm

goodboyr View the latest post

There are no new unread posts for this topic. Colnago Bottom Bracket

in Road

ironman1

9

1086

Sat Nov 22, 2014 6:03 pm

kmenon610 View the latest post

There are no new unread posts for this topic. Cervélo bottom bracket change

[ Go to page: 1, 2 ]

in Road

Champ5000

16

791

Fri Oct 31, 2014 9:40 am

Champ5000 View the latest post


It is currently Sun Dec 21, 2014 12:49 am

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