1939 BSA Gold Star

THE 1939 BSA GOLD STAR IS FAST!
The BSA Gold Star was introduced in 1938 in both 350cc and 500cc form. They were hand-built as high-performance machines. The BSA factory offered several performance modifications as options. Every bike was run on a dyno, and came from the factory with a printout of its dynamometer results showing the actual horsepower that the engine produced. The BSA Gold Star was one of the fastest production motorcycles on the planet in 1939. 1939 was also the last year of civilian production prior to World War II. These early pre-war bikes had rigid frames and girder front forks. Production resumed at war's end, and the mighty Gold Star continued to distinguish itself as one of the best off-road machines on the planet. Postwar bikes got telescopic forks in place of the ancient girder, and a rear swing arm followed in 1953. The "Goldie" was a runaway hit for BSA right up until they killed the bike in 1963 when they replaced it with the unit-construction 441 Victor. Alas, the magic was gone.


1939 BSA Gold Star SPECIFICATIONS

Engine type

Displacement

Bore & Stroke

Compression

Lubrication

Ignition

Charging

Primary drive

Clutch

Gearbox

Final drive

Frame type

Suspension, front

Suspension, rear

Brake, front

Brake, rear

Tire, front

Tire, rear

Wheelbase

Ground clearance

Seat height

Air-cooled OHV single

496cc

82mm X 94mm

NA

Dry sump

Lucas 6V MagDyno, gear-driven

Lucas 6V MagDyno, gear-driven

1/2" X .305" Chain w/cush-drive

Multi-plate, wet

BSA 'Electron' 4-speed, right foot shift

5/8" X 1/4" chain

Full cradle, steel tube, rigid

Sprung Girder-type fork, adjustable damping

None

7" X 1-3/8" SLS drum

7" X 1-3/8" SLS drum

3.00" X 20" Dunlop Universal

3.25" X 19" Dunlop Universal

54"

4-5/8"

28-1/2"



MORE BSA PAGES:
BSA Motorcycles
..... BSA Gold Star
..........1939
..........1953
..........1954
..........1961
..........1962
..... BSA A7 (pre-unit 500)
..........1952
..........1955
..... BSA A10 (pre-unit 650)
..........1951
..........1954
..........1957
..........1958
..... BSA A65 (unit-construction 650)
..........1962
..........1963
..........1964
..........1965
..........1966
..........1967
..........1968
..........1969
..........1970
..........1971
..... BSA Rocket 3 (750 triple)
..........1969
..........1971
..... BSA Bantam


Check out these BSA BOOKS





BSA Motorcycles: The Final Evolution



The BSA Gold Star: Motorcycle History



Illustrated Bsa Buyer's Guide (Motorbooks International Illustrated Buyer's Guide)



Bsa Twin Restoration



BSA Unit Singles: The Complete Story including the Triumph Derivatives



Bsa Motor Cycles: Since 1950 (British Motor cycles since 1950)



BSA Unit Twins



BSA 500 & 650 Twins: The Essential Buyer's Guide



Triumph and Bsa Triples



How to Restore Triumph Trident T150/T160 & BSA Rocket III: YOUR step-by-step colour illustrated guide to complete restoration (Enthusiast's Restoration Manual)




For more like these, visit our BSA BOOK STORE






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Back to top - 1939 BSA Gold Star
Updated 12/9/17

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