Clockwork bottom bracket

[orangeone]

Hello, the old bottom bracket in my old orange clockwork is 122mm but it looks to long. It came with the bike when I brought it. Can anyone help me with the right length it should be. Thank you

 

[poweredbypies]

Just changed the one in my prestige and a 110 came out of that so as a stopgap a £4 special from crc went in.

 

[Broken Biker]

The old UN72 that I ran with some old school cranks was 122.2mm I seem to recall, then when low profile Shimano cranks came out, they went to 113mm.

 

[orangeone]

Thank you I thought it might be about that. Explans why the front mech never work like it should

 

[orangeone]

Its running deore lx cranks of 93/94 vintage

 

[poweredbypies]

m560's or 563's thats a change over year according to sheldon.

http://sheldonbrown.com/bbsize.html

 

[We_are_Stevo]

Easily check which BB matches which crank/chainset here...

...EDIT: B*gger! Beaten to it again

 

[orangeone]

Just had a look I need a 113mm one. Thank you all for help saved me a lot of head scratching

 

[jax13]

i just fitted a 113 to mine, you would potentially get away with a 110 depending on the chainset but i would imagine 120+ is overkill for almost all cranks.

 

[poweredbypies]

Just measure mine up again sheldons data and im bang on the money .