These are the known mechanical and performance specifications for your 1957 BSA Golden Flash.
Basic Specs
Engine
Displacement646.00 ccm (39.42 cubic inches)
Type
DetailsTwin, four-stroke
Max RPM
Compression
Bore/Stroke70.0 x 84.0 mm (2.8 x 3.3 inches)
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaust
Lubrication
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity19.00 litres (5.02 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front SuspensionHydralic telescopic forks
Front Travel
Rear SuspensionTwin shock
Rear Travel
SeatDual seat
Seat Height
Alt. Seat Height
Total Height
Total Length2,130 mm (83.9 inches)
Total Width
Ground Clearance
Wheelbase
Dry Weight190.0 kg (418.9 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre3.25-19
Rear Tire/Tyre3.25-19
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments