Re: [CR]Question: BB fixed cup

Example: Events:Cirque du Cyclisme

Date: Fri, 13 Jan 2006 07:10:25 -0800 (PST)
From: Jerome & Elizabeth Moos <>
Subject: Re: [CR]Question: BB fixed cup
To: Steve Maas <>,
In-Reply-To: <>

Yes, if it's really 70mm, it would be extremely rare to be anything other than Italian, not sure I've ever seen English, French or even Swiss thread on a 70mm BB. The surest way to tell was already suggested - remove the adjustable cup and try an English adjustable cup. It will slide easily into an italian BB without engaging the threads. Now, telling French from Swiss thread on a 68mm BB shell on 60's/70's French or Swiss bikes presents a much greater challenge - been there, done that.


Jerry Moos Big Spring, TX

Steve Maas <> wrote: Almost certainly standard Italian--i.e., right-hand--threading. If you want to be absolutely sure, look into the BB from the opposite side, and you should be able to see a few threads. This will tell you how it is threaded. Simple enough!

Steve Maas Long Beach, CA, US of A

Bianca Pratorius wrote:
> Item: 70mm shell Bianchi bb.... Frame made in Italy mid 80's Columbus
> tubing
> I need to remove the fixed cup. This must be a common problem. I don't
> want to muck up the threads, but I have no way of knowing which way to
> turn the fixed cup. You can't see in there to determine which way the
> threads are running. If I make a mistake I will have damaged the frame.
> Which way should I remove the fixed cup....Normal counterclockwise or
> clockwise?
> Garth Libre in Miami Fl.