Back to Bike FinderYears: 1961 · 1960 · 1959 · 1958 · 1957 · 1956 · 1955 · 1954
BSA Golden Flash
1957Allround

BSA Golden Flash

Key specifications

Engine
646 cc
Power
35 HP
Weight
190 kg
Fuel type
petrol
Fuel capacity
5.0 L
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1957 BSA Golden Flash The 1957 BSA Golden Flash stands as a classic example of British motorcycle engineering, embodying a blend of style, performance, and innovation. Positioned in the all-rounder category, this motorcycle captures the spirit of the golden age of motorcycling in the 1950s, appealing to both seasoned riders and collectors alike. With its striking aesthetics and robust build, the Golden Flash was designed for versatility, making it an excellent choice for everything from spirited weekend rides to daily commutes. As part of BSA’s impressive lineup, the Golden Flash holds a special spot in the hearts of enthusiasts, showcasing the quality craftsmanship that the Birmingham Small Arms Company is known for. At the heart of the Golden Flash is its powerful 646cc twin, four-stroke engine, capable of producing a respectable 35 horsepower at 4500 RPM. This powerplant delivers a thrilling riding experience, with smooth acceleration and a delightful growl that resonates with every twist of the throttle. The engine's bore and stroke dimensions of 70.0 x 84.0 mm allow for a balanced performance, while the air-cooled system ensures reliability under various riding conditions. Coupled with a chain final drive, the Golden Flash offers seamless power delivery, making it a joy to handle on winding country roads or city streets. Its power-to-weight ratio of 0.1842 HP/kg strikes a harmonious balance between agility and stability, providing riders with confidence in any situation. The 1957 BSA Golden Flash is not just about power; it also incorporates thoughtful features that enhance the riding experience. The hydraulic telescopic front forks and twin-shock rear suspension work in unison to deliver a comfortable ride, absorbing bumps and imperfections in the road with ease. For stopping power, the expanding drum brakes at both the front and rear ensure reliable deceleration, bringing the motorcycle to a halt safely. With a fuel capacity of 19 liters (5.02 gallons), riders can embark on longer journeys without the worry of frequent refueling. The classic design, featuring elegant curves and chrome accents, is not only visually appealing but also a testament to BSA’s commitment to quality. **

Pros

    Cons

    • Classic Aesthetics: The Golden Flash features a timeless design that appeals to vintage motorcycle enthusiasts and collectors, making it a standout in any collection.
    • Smooth Performance: The robust 646cc engine provides a balanced blend of power and torque, ensuring a satisfying ride on varied terrains.
    • Comfortable Riding Experience: With its hydraulic telescopic forks and twin-shock rear suspension, riders enjoy a smooth and comfortable ride, even on less-than-perfect road surfaces.
    • Weight: At 190 kg (418.9 pounds), the Golden Flash may feel heavier compared to modern motorcycles, which can affect maneuverability for some riders.
    • Drum Brakes: While effective, the drum brake system may not offer the same level of stopping power and responsiveness as modern disc brakes, particularly in emergency situations.
    • Limited Technology: As a vintage motorcycle, the Golden Flash lacks modern amenities such as fuel injection, advanced electronics, and safety features commonly found in contemporary bikes.

    Technical details

    Source specification data

    Make
    BSA
    Model
    Golden Flash
    Category
    Allround
    Power
    35.00 HP (25.5 kW)) @ 4500 RPM
    Fuel System
    Carburettor
    Bore X Stroke
    70.0 x 84.0 mm (2.8 x 3.3 inches)
    Displacement
    646.00 ccm (39.42 cubic inches)
    Cooling System
    Air
    Engine Details
    Twin, four-stroke
    Transmission Type Final Drive
    Chain
    Dry Weight
    190.0 kg (418.9 pounds)
    Fuel Capacity
    19.00 litres (5.02 gallons)
    Overall Length
    2,130 mm (83.9 inches)
    Power Weight Ratio
    0.1842 HP/kg
    Seat
    Dual seat
    Rear Tyre
    3.25-19
    Front Tyre
    3.25-19
    Rear Brakes
    Expanding brake (drum brake)
    Front Brakes
    Expanding brake (drum brake)
    Rear Suspension
    Twin shock
    Front Suspension
    Hydralic telescopic forks