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The threads on the rear chain adjusters on my '55 ES2 are a bit iffy but I can't seem to find a replacement set. I'm thinking of buying a set of taps/dies and re-threading them down a size. Does anyone know the size/TPI/and thread type (Whitworth/BSF etc) of the standard unit? Many thanks for any help. George
The parts list for my '61…
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The parts list for my '61 Model50 says the part number for the adjusting nut is E3229 but the book does not say what the thread pattern is.
One interchange I found says that the thread form is 1/4-26CEI
I wouldn't think that Norton made any changes from '55 to '61 for this insignificant part.
Mike