Smiths. BSA Gold Star. Tacho Gearbox/Tacho Drive 1:1Ratio 1:1Gearbox Revolution Tacho DriveIf you look at the drive end turn it clockwise, the final drive turns clockwiseMade in England
S25,S26,S27,S28,S29,S30-
9,S31-7 493cc ,SV 1925-31
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
Amal BSA T10 GP2 Carburettor 1 5/32" usedfor restoration - no warrantyYou can tell us the jetting, needle size, etc., and we quote you for the changePlease look at all pictures
BSA M23 Carburettor1939 STD 289 1.1/8"
Made in England. replaces 89/014
Main Jet 200
Valve 4
Needle Jet 106
This carburettor fits many OHV Motorcycles, 500 cc in the era of 1930-1945, having a slightly longer arm on the float ball,
no adjusters on top of the carburettor.
The float bowl can be fitted lefthandside or right hand side
We can change any inernal parts on the carb. to suit your motorcycle
Please look at all pictures