RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: Taipan on August 06, 2011, 01:23 PM
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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:
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it's 20 tpi :daumenhoch:
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I need to know the pitch of the thread,eg. 1.25/1.5/1.75 :daumenhoch:
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As said, 9/16" x 20 tpi (treads per inch)
NOT 12mm x anything
:daumenhoch:
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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 ???
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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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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)
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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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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.
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thx stidds,maybe sorted,but if not i'll get back to you with your kind offer :daumenhoch: