I've just replaced the headset on an old Specialized Rockhopper frame, it's an FSA Orbit MX. After knocking out the old headset the new one was pressed in using a mates Park headset press. We did it up as tight as possible but there is a small gap between the cups and the frame (top and bottom about 1mm).
With the fork in everything feels OK, but is it likely to be a problem?
Cheers,
John
Probably. As long as the gap is the same all the way round. If ther'es any 'skew' the bearings will bind though. Is it obviously catching on something?
On a more positive note maybe you could answer Mackem's question on crown races?
That's odd. You didn't bottom out the threads on the headset press did you?
Just bray it in the rest of the way with a decent hammer and block of wood.
And shout RAHHHHH! while you do it.
or AAAAAARRRHHHHH! when you hit your thumb.
Or YARRRRRGH! as you slip your eye patch into place..
Thanks, I was considering the hammer and wood option but after using the press I did think that I might do more damage than good. Don't think the threads were bottomed out but will check.
Cheers
John
Check inside your head tube, if you have long cups they may be bottoming out on a step that's reamed into it.
Hey. You should get your head tube reamed and faced while you're at it. Sometimes there's a small amount of difference between factory head tubes and aftermarket headsets.
Reaming it will simply remove a small amount of material. If you visualize what's happening you will realize that the fit is too tight so removing a very small amount of alloy material is the logical course of action.
I don't think it's a numpty question better to ask and see if someone has experience rather than damage something.
My opinion for what it's worth.
There's no such thing as a "numpty question" you'd only be a numpty if you asked a question you already knew the answer to.
It sounds like you've got a deep cup headset designed for DH/FR/DJ bikes and tried to fit it to a XC frame.
Some XC frames are only milled out to a depth that accommodates XC style headsets. You wouldn't know that unless you tried to fit a different type headset or read all the boring tech spec produced for the frame. (which is hard to come by for the regular punter).
So you will need a new headset, but it's not a stupid question.
Good luck with the refit.
I'm pretty sure an Orbit MX is not a deep cup headset though.