FSA Square Taper 68mm Shell

mcfaddenowen

I have a Boardman Sport 2014 Alloy Road bike that has a FSA Square Taper 68mm Shell but I had a bottom bracket fitted to hold a Rotor 24mm hollowshell type Crank a long time ago. On looking at the non-drive side bearing the small cap that covers the bearing is missing and there's a bit of meovement in the crank as a result. I'd like to put a new BB in it but want to ensure I order the right BB for the job. I think (I'm new) that I would need a threaded BB that is 68mm wide but don't know exactly what else to specifiy when looking for the exact bracket I need..
Has anyone worked on this type of shell before and if so what did you choose as a good replacement for the FSA Square Taper 68mm Shell for a 24mm hollowshell crank please?
Your help would be greatly appreciated!!

keef66

Sounds like your frame has a completely standard BS threaded bottom bracket shell.

(I'm guessing the square taper refers to the original cartridge BB / crank)

What kind of BB you fit will depend on the chainset. Am I to understand it's a Rotor chainset with a 24mm spindle? I have no idea what Hollowshell is.

keef66

If it is a Rotor chainset with a 24mm spindle you can fit a matching external BB from Rotor or one of the Shimano Hollowtech versions.

https://www.wiggle.co.uk/rotor-bb1-bott ... ket-steel/

https://www.wiggle.co.uk/shimano-bb-r60 ... m-bracket/

step83

Sounds like you need a Rotor BB1 68mm english threaded

https://www.wiggle.co.uk/rotor-bb1-bott ... ket-steel/

Just need to confirm the model crankset you have, usually its on the arm somewhere.

*edit Keef ninjad me

mcfaddenowen

keef66 wrote:

Am I to understand it's a Rotor chainset with a 24mm spindle? I have no idea what Hollowshell is.

That's right - 24mm spindle..

mcfaddenowen

keef66 wrote:

If it is a Rotor chainset with a 24mm spindle you can fit a matching external BB from Rotor or one of the Shimano Hollowtech versions.

Thanks for the quick reply - I'll order one today -

mcfaddenowen

Step83 wrote:

Sounds like you need a Rotor BB1 68mm english threaded

https://www.wiggle.co.uk/rotor-bb1-bott ... ket-steel/

Thank you for confirming this - much appreciated!