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Threads on bottom of steerer tube?

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Threads on bottom of steerer tube?

Old 10-01-18, 06:01 PM
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marcs34
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Threads on bottom of steerer tube?

I am trying to put together my first bike and am having a problem installing the fork. Where the steerer tube meets the crown there are threads. How do I put crown race on with these there? Do I file them off?




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Old 10-01-18, 06:25 PM
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Tamiya
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Umm... what parts are you trying to mix, are they MEANT to mate with each other?
Old style headset has big nut on top that goes on the threaded tubevsAhead style newer design stem that clamps on onto threadless stem Afaik there are adapters available to allow one to swing either way.But filing threads anything will make diameter smaller & I can't ever handfile anything perfectly round, that's why I'd love owning a lathe... etc etc
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Old 10-01-18, 06:49 PM
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You need to give people more information. What kind of fork? threaded, threadless? 1" 1.25"? Threaded headset? threadless? Internal? Integrated?
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Old 10-01-18, 06:50 PM
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marcs34
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Forks and headset bought separate. Forks are Jinguo brand. threadless. 1"
Headset Ginyea. Threadless headset. Semi-integrated.

Last edited by marcs34; 10-01-18 at 07:03 PM.
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Old 10-01-18, 07:03 PM
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Is the steerer threaded & glued into the fork crown ?? So extra threads are exposed ?
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Old 10-01-18, 07:04 PM
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Have you measured it? The crown race should have an interference fit. Are they threads or just ridges?

1.125" threadless steerer.
  • Fork crown race ID: 30.0mm
  • Fork crown seat OD acceptable range: 30.1mm to 30.2mm
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Old 10-01-18, 07:19 PM
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Originally Posted by Homebrew01 View Post
Is the steerer threaded & glued into the fork crown ?? So extra threads are exposed ?

Threads appear to be part of fork crown, not part of steerer.
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Old 10-01-18, 07:39 PM
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Originally Posted by dedhed View Post
Have you measured it? The crown race should have an interference fit. Are they threads or just ridges?

1.125" threadless steerer.
  • Fork crown race ID: 30.0mm
  • Fork crown seat OD acceptable range: 30.1mm to 30.2mm
They look like threads. Do some crown races fit over ridges?
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Old 10-03-18, 09:00 PM
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Photo?
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Old 10-04-18, 02:37 AM
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As they say, "a photo is worth a thousand words."
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Old 10-08-18, 05:32 AM
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Originally Posted by MikeyMK View Post
Photo?
The page wasn't letting me post a photo without 10 previous posts.
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Old 10-08-18, 07:48 AM
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Originally Posted by marcs34 View Post
I am trying to put together my first bike and am having a problem installing the fork. Where the steerer tube meets the crown there are threads. How do I put crown race on with these there? Do I file them off?
Threaded steerer down at the fork crown?
that's a new one.

post more to get to 10 and then get a pic on here
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Old 10-08-18, 03:03 PM
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marcs34
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ok
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Old 10-08-18, 03:06 PM
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more options

you can find a 3rd party host, of your picture, then post a link, to that place,
rather than the picture, here.
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