Tech query: BB length for cook bros racing cranks

[James_Geldart]

I have no idea what BB length i need.

I want to fit a set of old school cook bros racing cranks to my zaskar.

its a 73mm sheel on the zaskar, and the XT BB i had with my XT cranks appears too short!

Anybody know what size im going to need?


cheers!

 

[pete_mcc]

122.5mm or 127.5mm

Here's your best resource:


http://www.bikepro.com/products/bottom_ ... able.shtml

 

[James_Geldart]

122.5mm or 127.5mm

Here's your best resource:


http://www.bikepro.com/products/bottom_ ... able.shtml

cheers matey!

 

[Sithlord]

Hi fella,

I am running my cooks on a 127mm BB on the IBIS

 

[James_Geldart]

Hi fella,

I am running my cooks on a 127mm BB on the IBIS

cheer matey, do you think that'll be the same for a zaskar? or does an IBIS usually require a longer BB?

Im running 46/34/24 with an 11-28 cassette if that makes a difference?

 

[Sithlord]

What was the BB axle length on the XT setup you had.. ?

 

[James_Geldart]

What was the BB axle length on the XT setup you had.. ?

i'll check tonight, i cant remember, somewhere inbetween 107 and 113 i think.... :roll:

 

[Sithlord]

If its a old style cup and cone type I have a spare XT Axle! I think its about a 125 so you could try that if its any help..

 

[David Gibson]

bb length

through personal experience don't use anything less than a 122.5mm.