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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 05-17-11, 03:03 PM   #1
AaronH
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Threading on hubs?

Hi
I tried searching the forums but didn't end up finding what I was looking for.
I have a 2010 Motobecane Track, currently set up FG. The hub is a flipflop hub and I want to try a freewheel cog, and I know there are different thread patterns. How do I know which thread pattern I have? Is it just a matter of counting TPI or are the ridges higher on some thread patterns than others?
Thanks in advance,
Aaron
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Old 05-17-11, 03:09 PM   #2
wearyourtruth
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notice on the left side there are 2 thread sizes. the right side has one thread size.

the left side is for fixed. the lockring is a smaller diameter and reverse-threaded. the right side is for a freewheel, which just threads straight on.
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Old 05-17-11, 03:13 PM   #3
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I'm not quite sure but didn't I read in some other thread just last week that you can also fit a freewheel on the fixed side?
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Old 05-17-11, 03:14 PM   #4
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The most common by far is ISO, 1.375"x24TPI. It will be what's on your hub.
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Old 05-17-11, 03:17 PM   #5
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Get a fixed/ fixed hub; you can mount a cog or freewheel on both sides; which you can't do with a flip flop hub.
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Old 05-17-11, 03:36 PM   #6
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Quote:
Originally Posted by calv View Post
I'm not quite sure but didn't I read in some other thread just last week that you can also fit a freewheel on the fixed side?
Yes.
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Old 05-17-11, 03:38 PM   #7
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The most common by far is ISO, 1.375"x24TPI. It will be what's on your hub.
+1

You can mount a freewheel on either side of your hub. But you can only put a fixed cog on the fixed side because that's the side that has provisions for a lockring.
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