BB english or italian threads????

[naffets]

thinking of upgrading my crankset from a campag centaur compact to a fsa k force compact how do i recognise what bottom bracket thread it is english or italian? and just for the record what is the difference between the two?

 

[gavintc]

I asked the LBS. However, you can usually google the question, presuming you know the basic details of your frame. Most are English. Even my Bianchi was English.

 

[joebe]

Slight difference in diameter and thread

ISO/English or BSA 1.37 in x 24 TPI 34.6-34.9 mm Cup diameter Left-hand thread drive side
Italian 36 mm x 24 TPI 35.6-35.9 mm Cup Diameter Right-hand thread both sides

Oh, and the Italian ones are more stylish

 

[Steve Austin]

the Italian ones can undo through the natural effect of pedaling...

Tell us what frame it is , and we'll tell you if its Italian.

 

[naffets]

cheers for the info!
bit of research found mines english thread

 

[Landslide]

Also, English BBs fit into a 68mm wide BB shell, Italian BB shells are 70mm. (I think...)

 

[Proto]

Also, English BBs fit into a 68mm wide BB shell, Italian BB shells are 70mm. (I think...)

Is correct.

 

[Landslide]

Hurrah!