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I have just started restoring my early James ML and I have a brief question I hope you help me with? Can anyone tell me the size of the top and bottom nut securing the fork spring to the forks?
I hope this makes sense.
Thank you in anticipation.
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Steve the top nut on mine is 3/8 BSF. The bottom screws into the fork casting and I assume it's the same?
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That’s exactly what I thought.
I bought these size nuts from a reputable source but they do not seam to fit.
I believe the headstock bolt is also the same size and these new nuts do not fit that either.
I have overlooked something somewhere...
Generally these things are built with 26tpi BSCycl fasteners, But BSF and Whitworth threads are also used. BSF threads get courser as they get bigger 1/4" is the same as BSC 26tpi. 5/16" is 22tpi and 3/8" is 20tpi etc. Ron