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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  9/16 pedal...whats the Thread pitch?
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Author Topic: 9/16 pedal...whats the Thread pitch?  (Read 1431 times)

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Offline Taipan

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9/16 pedal...whats the Thread pitch?
« on: August 06, 2011, 01:23 PM »
Can anybody tell me the Pitch of the pedal thread on my 9/16 pedals please,Need this as I need to know what size heli-coil kit to buy,I'm sure its 12mm but dont know the pitch :daumenhoch:

Offline MartyC

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #1 on: August 06, 2011, 02:16 PM »
it's 20 tpi  :daumenhoch:


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Offline Taipan

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #2 on: August 07, 2011, 10:19 PM »
I need to know the pitch of the thread,eg. 1.25/1.5/1.75  :daumenhoch:

Offline steve69

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #3 on: August 07, 2011, 11:22 PM »
As said, 9/16" x 20 tpi (treads per inch)

NOT 12mm x anything
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Offline Taipan

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #4 on: August 07, 2011, 11:32 PM »
The diameter of the pedals shaft is 12mm,you need to find the correct 'Pitch' of the thread (the distance between each thread ;)) to be able to buy the correct hel-Coil kit?
At this rate I'll have to nip it down the local garage and measure  it with their gauge ???

Offline Gnarlyscoots

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #5 on: August 07, 2011, 11:51 PM »
If it's 20 TPI, then divide 20 threads by 25.4mm. That will give you the MM you need  :daumenhoch:

That works out 0.78mm per thread.

Not sure if that helps ya  :-\
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Offline steve69

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #6 on: August 07, 2011, 11:55 PM »
If it's 20 TPI, then divide 20 threads by 25.4mm. That will give you the MM you need  :daumenhoch:

That works out 0.78mm per thread.

Not sure if that helps ya  :-\

You won't be able to get m12 x 0.78 

It's NOT metric

The 'pitch' is 20 threads per inch (9/16" x 20tpi)
If there's air in the tyres... it's a rider

Offline Gnarlyscoots

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #7 on: August 08, 2011, 12:02 AM »
French pedal spindles use M14 x 1.25 (14 mm/0.55 in metric diameter with 1.25 mm or 0.049 in pitch) threads, and thread loosely into a 9/16 pedal hole.
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Offline stidds

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #8 on: August 08, 2011, 01:48 AM »
You can also cut the correct threads for pedals on the heli-coil, I have a set of 9/16 pedal taps (left and right tap) that you can use if you need them.

Offline Taipan

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Re: 9/16 pedal...whats the Thread pitch?
« Reply #9 on: August 08, 2011, 11:38 AM »
thx stidds,maybe sorted,but if not i'll get back to you with your kind offer :daumenhoch:

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  9/16 pedal...whats the Thread pitch?
 

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