Changing from square taper BB to GXP or BB30

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danedan679
Posts: 57
Joined: Sun Jan 14, 2007 20:43 pm

Changing from square taper BB to GXP or BB30

Postby danedan679 » Thu Jan 31, 2013 10:21 am

I want to upgrade to a sram force chainset, and currently have an fsa tempo with what I assume is a square taper bottom bracket.

If i manage to get the bracket out, will it be indicated on it what diameter it is and whether it's italian or english screw? I have a bianchi camaleonte 2010 4, and it doesn't mention the bb anywhere.

secondly, will a gxp bb just screw into the bike, i.e. is it going to be compaitble with what i have?

cheers

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ride_whenever
Posts: 13199
Joined: Tue Oct 17, 2006 19:31 pm

Re: Changing from square taper BB to GXP or BB30

Postby ride_whenever » Thu Jan 31, 2013 11:10 am

It should say whether is it english or italian, everything else is not really necessary for GXP.

If you're on square taper then you will need the gxp cranks and cups to fit your frame, but I'm fairly sure all the modern bianchi are english thread.

danedan679
Posts: 57
Joined: Sun Jan 14, 2007 20:43 pm

Re: Changing from square taper BB to GXP or BB30

Postby danedan679 » Thu Jan 31, 2013 13:25 pm

thanks rw. i emailed bianchi, they replied with:

FSA BB7420AL JIS 68-116 BSA

which to my untrained eye looks like an english thread 68mm?

keef66
Posts: 8712
Joined: Tue Apr 29, 2008 09:46 am

Re: Changing from square taper BB to GXP or BB30

Postby keef66 » Thu Jan 31, 2013 13:31 pm

Correct!

danedan679
Posts: 57
Joined: Sun Jan 14, 2007 20:43 pm

Re: Changing from square taper BB to GXP or BB30

Postby danedan679 » Thu Jan 31, 2013 13:56 pm

cheers!

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Monty Dog
Posts: 20383
Joined: Thu Dec 14, 2006 14:31 pm

Re: Changing from square taper BB to GXP or BB30

Postby Monty Dog » Thu Jan 31, 2013 18:46 pm

FWIW BB30 simply won't fit, only GXP
Make mine an Italian, with Campagnolo on the side..

danedan679
Posts: 57
Joined: Sun Jan 14, 2007 20:43 pm

Re: Changing from square taper BB to GXP or BB30

Postby danedan679 » Thu Jan 31, 2013 20:17 pm

Cheers md


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