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I removed the fork from my old racer because I was hit by a car. When I'm trying to put the new fork on the frame, I get a gap where the top bearing is situated. What should I do? Could I just remove the bearing and put everything in place, or is that just too stupid?

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Do not remove the bearing. It sounds like the steer tube on your new fork is too long for your head tube. Post back with a picture if possible and we should be able to clear up the problem. – user973810 Jun 11 '12 at 13:57
I can't upload pictures, but I found this one. It's the same frame: – Andreas Jun 11 '12 at 21:53
I can't upload pictures, but I found this one. It's the same frame: cdn.velospace.org/files/peugeota.jpg This one is threaded, but when I put the unthreaded fork, I get a gap between the frame and the silver "screw"ring under the stem. Maybe I should ask this different. Do I need to do something with the head bearing when I go from threaded to unthreaded fork and stem? – Andreas Jun 11 '12 at 22:03
Threadless forks usually have a lip at the crown for the lowest race to be pressed on. I don't know if threaded forks have this. If they are not supposed to have the lip, it may be causing the problem? – Jack M. Jun 11 '12 at 23:35
You're trying to change from a threaded fork and stem to an unthreaded fork and stem? If that's the case, you need a whole different headset - the "head bearing" as you called it. – jimirings Jun 12 '12 at 4:45
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1 Answer

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It's possible that your head tube was ovalized when the wreck occured causing a gap. Also keep in mind that head tubes come in many sizes. Your fork may be the wrong size.

See this Wikipedia article for more: http://en.wikipedia.org/wiki/Headset_(bicycle_part)

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If this helps, if you see this picture: upload.wikimedia.org/wikipedia/commons/c/c6/… I've got the gap between the upper head tube race and the adjustable race ( And just thing it's unthreaded ) – Andreas Jun 11 '12 at 22:05

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