Fixed cup removal (with pics)

[Splatter Paint]

Am I right that this relies on the friction between the tool and the cup?

Could you also use a headset spanner on the cup at the same time?

 

[rmwesley]

Thanks very much for the kind words

Original article by Sheldon Brown: LINK

@novocaine That's a stunt cup, I refuse to accept it as real. Weird huh? That's exactly what I thought.

@Splatter Paint Am I right that this relies on the friction between the tool and the cup? Yes, exactly right. The cup is clamped solidly between the steel tube inside the BB shell and the penny washers outside. The cup is heat-treated steel, so much stronger than the washers and "will not" get damaged. Could you also use a headset spanner on the cup at the same time? I don't think there is actually any need. That cup was absolutely immovable with a headset spanner alone, but the huge force you can apply with a breaker bar means no spanner required.