Originally Posted by
wearyourtruth
those races on the frame can be removed. your fork sounds like it's called a "1 inch threaded fork" the same fork used on bikes for deeeeeeeeeeeecades
Originally Posted by
huerro
Those headset cups are not part of the frame, they are pressed into it.
Read this:
http://www.parktool.com/repair/readhowto.asp?id=127
As far as new forks fitting, you will need a 1 inch fork (the other option is 1 1/8). You may or may not need to replace the whole headset depending on its condition and the kind of replacement fork you get.
Why do you need a new one?
Yes I see that it is a "threaded headset" probably 1" cause it says that is the japanese standard.
I would not want to have to pull those cups.
My thinking was that a carbon or round fork might be more laterally stable than the one I have if the process was as simple as unscrewing the old and putting the new in it's place.
Should I just leave well enough alone?