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steerer tube die pitch threading advice required.

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steerer tube die pitch threading advice required.

Old 07-12-15, 04:30 AM
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steerer tube die pitch threading advice required.

As I have unthreaded 1" steerer tube I was wondering what die and die pitch I should get to thread. I'm hoping that there is one standard thread pitch for most steerers.

I presume as an alternative I could buy a threadless headset for 1" tube. Not sure about this though..

Any advice welcome

Thanks
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Old 07-12-15, 06:11 AM
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Originally Posted by klingspor
As I have unthreaded 1" steerer tube I was wondering what die and die pitch I should get to thread. I'm hoping that there is one standard thread pitch for most steerers.
ISO spec is 1" x 24tpi with 60° pitch. A lathe is preferred over a die and stock for threading an unthreaded steer tube; perhaps have a machine shop thread it for you prior to building the fork. If you do want to try a die, make sure to use a piloted stock.

I presume as an alternative I could buy a threadless headset for 1" tube. Not sure about this though...
These are available and worth considering.
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Old 07-12-15, 08:57 AM
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get a threadless headset. Ritchey makes a nice, cheap model. Steerers were threaded with machines that made a better quality thread than a hand die is capable of.
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Old 07-12-15, 10:04 AM
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Bike Manufacturing has its own Machine tools , like a Special tool holder for threading steerer tubes .

with a centering sleeve .. the piloted alignment in the die holding handle..

But yea given there are headset parts made for 1" thread-less, go that way ..
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Old 07-12-15, 11:31 AM
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Thanks for all the advice. machine threading a tube of that diameter is obviously the way forward instead of using a hand die. Threadless is obviously the way to go on my design. I'm going to drop you guys a line tomorrow with a picture as I have an unconventional design and just want to run a couple of details past others. Thanks
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Old 07-14-15, 01:21 AM
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Make sure also that your steerer wall thickness is thick enough for threading - threading a steerer that's intended for threadless can take away too much metal.
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