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As far as I know lightly refacing would be fine, I think the metal under the bearing surface is softer though isn’t it?
Depends on the headset. The frames I’ve had with integrated headset cups and drop-in races (e.g. roadsters, anything with a headclip), the races have been machined from high carbon steel. They’ll be the same hardness all the way through. Pressed in cups, I guess, were case hardened? They’ll be softer underneath.
I would intend to literally only dress the surface. I’m pretty sure you could make the headset 80% better with 20% work; at the least make an unusable headset usable again, but not perfect.
Jonny69-
Pressed in cups, I guess, were case hardened? They’ll be softer underneath.
How deep does the case hardening go?
I think it’s pretty shallow, I can see why pressed in cups need to remain ductile.Would it not be possible to re-case harden after grinding the races?
I’ve got a Magistroni fork crown race that could do with a bit of love.
🙂
absurdbird
That’s great, thank you. Good tip turning the cups.
I can’t remember exactly what the machine shop needs but pretty sure it’s an annular something or other. Not a huge surprise! Didn’t seem like many places have one when I was looking.
As far as I know lightly refacing would be fine, I think the metal under the bearing surface is softer though isn’t it? That was the question with mine - could it just be re-faced or would it need hard chroming as well. Starts to get a bit pricey!
Please put my name down for one of your tools!