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PostPosted: Fri Sep 27, 2013 8:37 pm 
Retro Guru

Joined: Tue Jun 07, 2011 10:00 pm
Posts: 523
Location: Ely. UK
Most pedal/crank threads are 9/16" x 20 tpi, that is all except the one piece crankset normally found on kids bikes & they're 1/2" threads.
Taps & dies are available from here http://www.webbline.co.uk/default.asp?pID=10


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PostPosted: Fri Sep 27, 2013 8:41 pm 
Old School Hero

Joined: Sun Feb 24, 2013 9:40 pm
Posts: 150
Many thanks. On close inspection, it's only the very end of the threads that's damaged so I'm going to see if a local machine shop can grind off a couple of turns - there will still be plenty of thread. If they can't, I'll order the dies and give them a try.


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