bike wrench

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A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

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Headset cup removal problem (lemmy.world)

submitted 3 weeks ago by calamitycastle@lemmy.world to c/bikewrench@lemmy.world

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Hoping someone can offer some advice. I'm working on a late 80s Raleigh Montage, 88 I think. It has a u-brake on the rear which dates it.

Anyway I have it all stripped down, including the cup and cone bb.

The only thing I can't seem to remove are the headset cups, as the headtube is slightly flared on the inside top and bottom, so I can't get the tool to make contact with the edge of the cup.

What am I missing here? How do I get these out?

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[–] RubberElectrons@lemmy.world 2 points 3 weeks ago (1 children)

I've had to do similar for getting mildly press-fit ball bearings out from the inside of my motorcycle wheels.

You're making a tool called a 'drift', so look for a square edged piece of metal, could be a nice steel rod, paired with a light metal-face hammer. Slow and steady.

Doesn't apply here but for general knowledge: any type of impact on ball bearing races turns the bearing into 100% junk, do not reuse that extracted bearing.

[–] calamitycastle@lemmy.world 1 points 3 weeks ago

Posted an imgur link showing what I'm dealing with. Any advice appreciated! I am reticent to resort to the screwdriver, although I can see the logic in small taps in a rotation