Bottom Bracket Size

[chrisv40]

Hi, got a problem i have a m730 chainset to go on my Saracen Sahara but the cartridge bottom bracket is too short and the chainset fouls the chainstay. Does anyone know what size bottom bracket i will need or is the chainset not compatible due to its age?

 

[Wold Ranger]

BB length

What axle length You using on the BB? Will prob need a 122 or 127 mm

 

[chrisv40]

Thanks, hope a 122 will do there are some on ebay what about diameter do i need 62mm or 72mm?

 

[Wold Ranger]

Shell

You must mean shell width? just measure it with a ruler, wil be 68 or 73mm but prob 68? whats axle length of the one ur trying?

 

[chrisv40]

Yep better do some measuring tomorrow.

 

[chrisv40]

Sorted 73mm shell 122 axle UN54 off ebay worked a treat.

 

[DeletedUser006]

Had the same issue this week for my Saracen and we both went for the same cartridge

http://www.retrobike.co.uk/forum/viewtopic.php?t=37390