[chriskaiser]

My BB that I have now is 70x123. I am going to get the FSA superlight crank with the ISIS drive, I will also need to get a new BB. Their italian threaded BBs come in 70 x 108mm, 118mm Italian thread does this mean that it will fit but the axel will be a bit shorter?


FSA Crank

Should I get the 108mm or the 118?

also another number that I see on my bb is 36x24T, what is this relating to?

 

[Wumpus]

36x24T is a standard Italian BB.

The 36mm is the diameter of the BB and the 24T is the thread pitch.

 

[Wumpus]

A double would take the 108 and a triple would take the 118 most likely.

 

[oldfart]

You can't make direct length comparisons between older square tapered bbs and ISIS or Octalink splined. The fit between crank and spindle is different.

 

[chriskaiser]

Merçi, so I guess that I will get the 108mm one, I'm excited it is going to be purdy

 

[EpicRide]

I just went from an old square-taper to a newer splined one. Of course I also switched from a triple to a double. I went from a 68x118 to a 68x109.5..

New stuff is always nice, eh?