Technical & Reference Section > Tech and Restoration

1inch threadless headset question

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Glen:
Will a 1 inch threadless headset cups and bearings only work with a 1 inch threaded fork using the current cone, washer and head lock??  I assume it would as its only the cups and bearings and the top bearing is a normal caged bearing.  I also assume Ill have to change the fork race to the new race to use the new needle lower bearing?

This YST threadless on a 1inch threaded fork:  http://cgi.ebay.co.uk/YST-1-threadless-headset-w-hanger-BLUE-ANODIZED_W0QQitemZ200291036354QQcmdZViewItemQQptZCycling_Parts_Accessories?hash=item200291036354&_trksid=p3286.m63.l1177

thanks

harris:
its the internal headset size you should double check first as alot of 1" arent actually the same.
ones for racers are about 2mm smaller.

telelogic:
I just tried to have a Nikyo Oldschool Headset fitted to my 85 performer build,

the bloody cups are about 1mm too big :'(

really gutted. was told that it would fit any old school build!

and it was the only black headset I could find :-\

Now I feel like my whole build is compromised.

bloody gutted for christmas :(

telelogic:
I know that doesn't really pertain to the thread,

but my shrinks phone was engaged and I had to tell someone ;)

harris:
telelogic that headset should fit might be tight but should fit.

glen a regular bmx headstock internal should be approx 32mm    a 1" threadless is  about 29.8mm so will flop about

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