Headset spec?

tonyride

tonyride

Don't piss off the red guy
I should know the answer to this but I don't and I'm admitting it. I have a frame where the head tube is not tapered, both top and bottom ID is around 44mm. How should I buy a tapered headset for that frame to fit a tapered fork where the top of the fork's steer tube is 1-1/8" and the bottom is 1.5"? I've only built bikes where the top and bottom of the frame's head tube are also tapered. TIA.
 
My IndyFab Steel Deluxe has a 44mm headtube with a Chris King headset used with an Enve carbon fork that has a tapered steerer tube.
IMG_20190629_184312504.jpg

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It's the same configuration as the El Mariachi so I think I can help. Top is ZS44 and bottom is a EC44, that configuration fits a 1 1/8- 1 1/2 tapered steerer tube (as shown on @JDurk 's picture right above). One thing though, define 'around 44mm"...
 
serviceguy said:
It's the same configuration as the El Mariachi so I think I can help. Top is ZS44 and bottom is a EC44, that configuration fits a 1 1/8- 1 1/2 tapered steerer tube (as shown on @JDurk 's picture right above). One thing though, define 'around 44mm"...
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My caliper says 43.42mm. Is that close enough to 44mm?
 
serviceguy said:
Not really, that's closer to 43mm...what frame are we talking about?
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I have a Gen 3 Stanton Sherpa Ti +. Since my measurement of the opening is a little over 43mm, a 43mm cup would be too loose in there. I thought a 44mm cup would make for a snug fit which is desired.... I think.
 
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tonyride said:
I have a Gen 3 Stanton Sherpa Ti +. Since my measurement of the opening is a little over 43mm, a 43mm cup would be too loose in there. I thought a 44mm cup would make for a snug fit which is desired.... I think.
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You're good according to Stanton's website... .56 mm interfence? Not good, any chance your measurement wasn't super accurate?

sherpa TI.JPG
 
mwlikesbikes said:
Make sure that $12 Harbor freight caliper is zeroed out before you use it.
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Excuse me, it was $19 from Amazon. LOL. I guess as long as the markings on the ruler don't shift the measurements should be close enough. I learned how to read various measuring instruments in the '80s before digital anything so I can always rely on that.
 
I reached out to Stanton and Dan Stanton responded and confirmed it is ZS 44 and EC 44. Can't wait to use my $8 home-made headset press again.
 
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