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#15699
BRIAN MARSHALL
Participant

On all but one of the Scotts that have been thru’ my hands, those lugs have been 18mm metric. The one exception is an early (1928) TT bike that has 3/4″ Whitworth threads @10tpi. Ironically, when the bike was new it was sold to Holland, and fitted with a sidecar for the Dutch TT as Assen. You would think that metric threads would have been far more appropriate !
Brian