Bottom bracket 22mm...
 

[Closed] Bottom bracket 22mm - 24mm - 86 - link to buy help please - its a minefield

Posts: 0
Free Member
Topic starter
 

Its a mine field - even the Fuji contact gave me th ewrong details

I have a Fuji Altamire 1.5 CX bike

Its 86 mm acrocss the bottom bracket -

it has just pressed it bearing - with no inner connecting sleeve

one side is 22mm inside diameter

the other side is 24mm inside diameter

What replacement bearings do I need ? and where from please - Im struggling

cheers


 
Posted : 14/09/2017 12:47 pm
Posts: 21
Free Member
 

Do the bearings have a code on the seal on them? If so let me know.


 
Posted : 15/09/2017 2:24 pm
Posts: 4331
Full Member
 

Sounds like you have a GXP crankset. http://wheelsmfg.com/complete-crankset-bb-adapter-guide gives an idea of the many different BBs.

What year is the bike? From google http://www.thebikelist.co.uk/fuji/altamira-cx-1-5-2014 for that model year it was BB86


 
Posted : 15/09/2017 2:45 pm
Posts: 19914
Free Member
 

22/24mm is a GXP bottom bracket, Truvaiv originally.


 
Posted : 15/09/2017 2:51 pm
Posts: 0
Free Member
 

Yep definitely GXP, BB86 by your shell measurement.

Your options are basically replace with same or one of the conversions such as the Hope PF41 although if you're keeping the existing GXP crank, many of the conversions make less sense.

Alignment is critical to pressfit BBs as most have plastic shells so will happily go in wonky if you try, leading to creaks and short life, as compared to say, an alloy headset cup that will pull itself into true if its slightly out of line on insertion. While whacking s PF in is mechanically simple due to the necessary alignment it's one of the few jobs I'd seriously consider asking my experienced LBS to do for me.


 
Posted : 15/09/2017 3:26 pm
Posts: 6332
Free Member
 

+1 BB86 GXP

Basic Sram ones aren't very good. Better ones exist, like Wheels Mfg. None are that good though, as GXP isn't a good design, particularly in pressfit BBs.


 
Posted : 15/09/2017 4:28 pm