XTR M950 BB question..

[ishaw]

Just to try and add some clarity, it sounds like you have an m950bb already. These are rebuildable, but if you have done so few miles on yours, perhaps a regrease is all that is needed?

You can also get an m952bb, but thus is sealed, so once gone, it's gone.

Other options are: 105, 600 (ultegra) or dura ace,though the road bbs weren't available in the correct size for xtr, they are close enough.

 

[dbmtb]

I found the M950 BB to be prone to needing frequent stripping and regreasing - but is otherwise pretty much indestructible.

It's not fit and forget like most BBs. But it is buy and keep.....

 

[Carsten G]

Hi

With all these replys so fast I´m impressed by this site

I will start to get the BB removed and se if it´s a real XTR 950 BB then the bearings will be testet and relubed/changed (maybe se if I can make a better bearing solution to it).

The thing that worries me with the road BB are the chainline when using E-Type front mech and the seals.

Cheers

 

[Carsten G]

The BB is out now and it is a BB-M950 and is in a degreasing bath right now but in my eager I forgot to see which side the two different bearing cups belong..

Any who can remember that ?

 

[cce]

they're threaded such that they only fit one side of the frame

 

[FluffyChicken]

These may or may not help you rebuild it.
The Dura-Ace do not seem to be setup to run in 73mm or in e-type setting. Just standard 68mm shell. So probably no luck there (I do not know)
As they are similar
7700 tech docs and exploded diagram
http://techdocs.shimano.com/media/techd ... 646804.pdf
http://www.kurbelix.com/Shimano_Technis ... 700-EV.jpg
This rebuild walk-through in details (pics as I cannot read that)
http://blog.goo.ne.jp/kino55crazy55/e/2 ... 6b85beed6e


The M950 one (both versions)

and another

 

[cce]

for anyone who may be interested i'll be listing an M950 BB in the FS forum shortly...

 

[Carsten G]

Very very nice whith all the info and technical pictures..

BB are fixed and runs smooth again.. Thanks Mates :xmas-big-grin:

 

[dbmtb]

BB are fixed and runs smooth again.. Thanks Mates :xmas-big-grin:

Velbekommen

 

[Aluminium Ohhh]

Hi All

Couple of questions regarding the M950 bottom bracket
Anyone know where I can buy on line 2.5mm and 1mm spacers?
I think I need a 1mm spacer RHS as I will be using a e-type mech
Second question is what is the function of the threaded ring No.5 in the first pic and No. 6 in the second pic in this thread and how should it be adjusted?