1992 m2000 bb size

[Mr-Cerberus]

Hi guys I can't find any information relating to the correct size

The one I've pulled out the frame isn't the original BB-UN70 it's a BB-UN50 that measures 68mm X 122.5mm but is that correct? As I had real trouble settings up the front mech.

Thanks Andy.

 

[cce]

the shell width depends on the frame, easily measured, either 68 or 73.
the axle length depends on the crank.

 

[Mr-Cerberus]

the shell width depends on the frame, easily measured, either 68 or 73.
the axle length depends on the crank.

The bike has the original richley logic cranks. I wasn't clear the frame measures 68mm I'm pretty sure the bb is 68mm although it was damaged on the left side cup so cant be screwed all the way in. ( Someone has used vise grips to install it, god knows why when a tool is £5.)

Thanks Andy