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Old 10-22-07, 08:46 PM   #1
Alzonder
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left-hand die for a lock ring

Has anyone cut left-hand threads for a lock ring on a regular hub?
If so, what does 1.29" x 24 tpi mean in tap/die "jargon"?
Thanks
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Old 10-23-07, 06:16 AM   #2
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The lockring inside diameter is smaller than the cog inside diameter, ie. the hub is "stepped". Doubt you'll have the material to accomplish what you're trying to do. Even if you did, you'd have to mill the step first before you could thread it - way more work and expense than just buying the correct hub.
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Old 10-23-07, 06:57 AM   #3
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Originally Posted by Alzonder View Post
Has anyone cut left-hand threads for a lock ring on a regular hub?
If so, what does 1.29" x 24 tpi mean in tap/die "jargon"?
Thanks
1.29 is the OD of the thread. 24 tpi = 24 threads per inch, (the pitch) . If you could find a die (doubt it) it would cost more then a Chris King rear hub.

If you had a lathe and there's enough material on the hub you may be able to turn the 1.29 dia, then single point the thread.

Wait a minute, I have a lathe and an NOS screw on rear hub......?

I never thought of doing this before but ya got me thinking.................................
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Old 10-23-07, 06:58 AM   #4
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Originally Posted by vpiuva View Post
way more work and expense than just buying the correct hub.

+1

But it might be fun to try.
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Old 10-23-07, 09:12 AM   #5
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Check this out:
http://thebikestand.com/track-hub.html
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Old 10-23-07, 09:36 AM   #6
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Yeah, thats what I'm talking about!

Thats all of the encouragement I need. Now I just need to find the time


My Baby, a 1943 Monarch 10EE.
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