Old 04-17-13, 05:14 PM
  #13  
roadrunner2012
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Originally Posted by Ex Pres
That schematic is all screwed up. The upper head-tube race shown isn't a race, it's a cup. And it's not going to fit inside of that adjustable "race" shown, which is also a cup.

I've always used the term race for the "inside" contact of the caged/loose bearing, and cup for the "outside". Calling all 4 pieces races just confuses the situation. A threaded headset has a crown race, a lower cup, an upper race, and an adjustable cup. Having clearly definable terminology for each part makes it a lot easier to understand.
Oh no, Sheldon Brown used the wrong terminology!

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