HI Otto,
The magneto "direction" is defined looking at it from the drive end
So looking at the inner end of the drive box it will rotate clockwise
(maybe I stand corrected on the direction change as it will depend on which way the worm gear is cut
this is an extract of the fitment list I have on the pc
John.
Smiths Chronometeric
Model Information
Model Speedometer Tachometer Speedometer Gear Box Tachometer Gear Box
BSA
D1 -1958 S.630/L
D1 Bantam 123cc SC 1102/07 BG5331/247
D3 150cc S.630/L
D5 175cc SC 1102/L
C10 250cc S.630/L
C11 S.433/1/L
C12 S.433/1
C15 Starfire Roadster 250cc SC 5301/03 BG5331/247
C15 Sunbeam 250cc ↑ BG5330/847
C15 Trials SC 1102/14 ↑
C15 Scrambler SC 5301/03 ↑
B31 -1957 S.608/9/L
B31 1958- SC 3305/04
B32 Triail & Scrambler -1957 S.525/3/L
B32 Comp S.608/11/L
B33 -1957 ↑
B33 1958- SC 3305/04
B32/34 Goldstar 1954-1956 S.546/3/L RC.83
B32/34 Goldstar 1957 S.608/11/L ↑
B32/34 Goldstar 1958- SC 5301/23 RC 1302/00 BG 5331/247
B32/34 Goldstar Scrambler SC 5301/07 ↑
B32/34 Clubmans SC 5301/23 ↑ BG 1508/04
M20 -1954 S.608/9/L
M20 1955- S.608/11/L
M21 -1957 S.608/3/L
M21 1958- S.433/3/N
M33 S.608/3/L
A50 SC 5313/00
A50 Star SC 3313/00
A65 SC 3313/02
A7 -1957 S.608/19/L
A7 1958- SC 3305/04
A10 -1957 S.608/11/L
A10 Super Rocket 1958-1962 SC 5301/22 RC 1303/03
A10 Super Rocket 1963- SC 5301/06 RC 1303/00
A10 Golden Flash SC 3305/04
A10 Spitfire Scrambler SC 5301/24
A10 Rocket Goldstar U.S.A. SC 5301/23 RC 1303/03
A10 Rocket Goldstar SC 5031/03 RC 1303/00