Well with Italian BBs both cups are 36x24tpi and right hand threaded so you could install the BB cups "backwards." I've never known of a bike that came with the fixed cup on the non-drive side, though there's a lot of stuff I haven't seen. enjoy, Brandon"monkeyman"Ives
"Nobody can do everything, but if everybody did something everything would get done." Gil Scott-Heron
On Wed, 16 May 2001, Aldo Ross wrote:
> I've been overhauling some of my bikes, and noticed that the original cottered bb on the 1960 Atala appears to be installed backwards, with the fixed cup on the drive side. With the cups reversed, both ends of the spindle are too short to allow the chainring to clear the chainstay.
>
> Is this common? I'd always assumed the adjustable cup should go on the non-drive side.
>
> Aldo Ross
> perplexed in Ohio