Hi.Dommie Nator said:If you are re-threading an existing hole why would you re-drill?
pierodn said:Sorry but here is not possible to have 6,8 mm (in inch?).
fiatfan said:in to my forthcoming book: "All the threads in a Norton Commando engine"
Rohan said:P.S. Dynodaves website sez "all the threads in Norton heads are Whitworth".
He obviously hasn't read your book....
Not entirely related here, but not disconnected either.
dynodave said:Jerry/Lab how long do we have to put up with him?
dynodave said:ROHAN you are a jerk..... insult or FACT?
L.A.B. said:Not for long if he does something like that again. :roll:
Rohan said:L.A.B. said:Not for long if he does something like that again. :roll:
So it is verboten to point out false news/info on this website ???
BSF was developed by R. E. B. Crompton, and his assistant George Field.[1] BSF threads use the 55 degree Whitworth thread form. It was introduced by the British Engineering Standards Association in 1908
The British Standard Fine (BSF) thread has the same profile as the BSW thread form but was used when a finer pitch was required for a given diameter.
British Standard fine thread
a screw thread having a Whitworth profile but a finer pitch for a given diameter