Originally Posted by
miamijim
IMHO a 'conventional headset' has 30.2mm cups and either a 26.4mm or 27.0mm crown race. A headset with 30.0mm cups is JIS and NOT 'conventional'.
To say a headset with a 27.0mm fork race is a JIS heasdet is a misnomer in my opinion.
I am a babe in the woods with all this Headset stuff... If I went to buy a new threaded headset do you just say "Gimmie a 1" threaded headset" and they say "Do you want a 26.4 or 27.0mm crown race" ?
For example when I go to build this bike up properly over the winter and I want to use really nice components...Lets say I want a new Campy Record Threaded headset. Is that gonna be a 'conventional headset' size and I'll just specify what size crown race I want? Will that be the same case if I go with a new Shimano threaded headset?