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headstock bearings

Posted: Tue Nov 15, 2011 1:52 pm
by tonydevon
Hi all, Im after some help again LOL

Im looking to see if I can mod the bottom of my fork to run taper race bearings top and bottom as I prefer them, but if I cant or decide not to, I need some advice

I have bare GP forks, and will be making the headstock tube for my frame on the lathe, so from what I can see this kit:


has the 2 bearings, , stem nut etc

BUT are the bearings complete, ie both parts, or will there be other parts required.

will simply start with some fat wall tube and take the internal ends out to suit the bearings.

taper race would be simpler and better, top one is simple as its 25mm stem, but the very bottom of the stem appears to be tapered, to either need to turn up a collar and sweat it into place to take a taper race, but will be huge bore.

dont fancy hanging the forks out the lathe chuck and turning the base parrellel, think they would vibrate about like a bitch LOL

Re: headstock bearings

Posted: Tue Nov 15, 2011 2:24 pm
by RICSPEED
to be honest tony all of the new bearing sets are mismatched shite ...the ball races them selves are OK (ish)
and the lower ones are acceptable but the top ones i have found are not matched and the balls dont sit in the groove

i would personally go with the taper set up

Re: headstock bearings

Posted: Tue Nov 15, 2011 2:40 pm
by tonydevon
ok thanks, thats my mind made up then :)

will probably buy a kit just to get the fork nut LOL

Re: headstock bearings

Posted: Tue Nov 15, 2011 2:59 pm
by mark
I have just seen a top screw on bearing race on a gp that didn't have the thread in it correctly so when you wound it in fork stem it was not level.

Re: headstock bearings

Posted: Wed Nov 16, 2011 10:52 pm
by paulmgreen
Loose balls

Re: headstock bearings

Posted: Wed Nov 16, 2011 10:54 pm
by RICSPEED
swinging freely eh pablo ??

Re: headstock bearings

Posted: Wed Nov 16, 2011 11:21 pm
by tonydevon
LOL do they hang low?

Can you swing them to and fro?

going to take the forks into work and have a think, will go with taper races top and bottom, thems what I know and use on everything else, seem silly when Im starting from scratch, not to use them

Re: headstock bearings

Posted: Wed Nov 16, 2011 11:49 pm
by RICSPEED
if you can find a way to make then fit without to much fuss let me know

Re: headstock bearings

Posted: Thu Nov 17, 2011 12:49 am
by tonydevon
dont forget Im making my own headstock tube, so its easy, just need to get the bottom of the fork stem to accept the inner race and the rest is childs play

headstock bearings

Posted: Thu Nov 17, 2011 8:42 am
by soulsurfer
I like the way this build is going, this could be the new Lambretta we've all been waiting for, keep it up Tony ;-)
Do you have a budget or an estimated total build cost?