Back to Bike FinderYears: 1941 · 1940 · 1939 · 1938
BMW R71
1940Cruiser

BMW R71

Key specifications

Engine
746 cc
Power
22 HP
Fuel type
petrol
Fuel capacity
3.7 L
Transmission
4-speed
Front brakes
Expanding brake (drum brake). Single
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1940 BMW R71: A Classic Cruiser with Timeless Appeal The 1940 BMW R71 stands as a hallmark of early 20th-century engineering, embodying the spirit of adventure and robust design that characterized the era. Positioned as a custom-cruiser, this motorcycle is not only a stunning piece of history but also a testament to BMW's commitment to performance and reliability. With its unique boxer engine and classic styling, the R71 remains a highly sought-after model by collectors and enthusiasts alike, offering a glimpse into the golden age of motorcycle manufacturing. Engine Performance and Riding Characteristics At the heart of the R71 lies a 746cc air-cooled, two-cylinder boxer engine, delivering a commendable 22.03 horsepower at 4,600 RPM. This powertrain, coupled with a 4-speed gearbox and a shaft drive, translates into a smooth and engaging ride. Riders can expect a top speed of 125 km/h (77.7 mph), making it an exhilarating choice for both city cruising and open-road adventures. The engine’s design, featuring a balanced bore and stroke of 78mm, ensures a harmonious power delivery and a distinctive rumble that resonates with enthusiasts. With a fuel consumption rate of just 4.5 liters per 100 km (52.27 mpg), the R71 also proves to be efficient, allowing for longer journeys without frequent stops at the pump. Key Features and Technology The R71's design showcases an array of thoughtful features that enhance both safety and comfort. Equipped with a single expanding drum brake at the front and rear, both measuring 200mm, the motorcycle offers reliable stopping power. The front suspension employs a cartridge system while the rear features a twin-shock swingarm setup, providing a stable and comfortable ride over various terrains. With a weight of 187 kg (412.3 pounds), the R71 strikes a balance between agility and sturdiness, making it a pleasure to maneuver. Additional features like a 14-liter fuel tank and a kickstarter exemplify the simplicity and reliability of this classic machine, ensuring that it remains a favorite among vintage enthusiasts. **

Pros

    Cons

    • Timeless Design: The R71 boasts classic aesthetics that appeal to vintage motorcycle lovers and collectors.
    • Reliable Performance: With its solid engine and efficient fuel consumption, the R71 is well-suited for long rides.
    • Comfortable Handling: The balanced weight distribution and quality suspension contribute to a smooth and enjoyable riding experience.
    • Limited Speed: While the top speed is respectable for its time, modern motorcycles can easily outpace the R71.
    • Basic Features: Lacking modern technology, such as electronic ignition or advanced braking systems, may deter some riders.
    • Kick Starter Only: The absence of an electric start can be inconvenient, particularly for less experienced riders.

    Technical details

    Source specification data

    Make
    BMW
    Model
    R71
    Category
    Custom-cruiser
    Starter
    Kick
    Power
    22.03 HP (16.1 kW)) @ 4600 RPM
    Clutch
    Dry-single plate-cable operated
    Gearbox
    4-speed
    Top Speed
    125.0 km/h (77.7 mph)
    Fuel System
    Carburettor. Graetzin G24
    Bore X Stroke
    78.0 x 78.0 mm (3.1 x 3.1 inches)
    Compression
    5.5:1
    Displacement
    746.00 ccm (45.52 cubic inches)
    Cooling System
    Air
    Engine Details
    Two cylinder boxer, four-stroke
    Fuel Consumption
    4.50 litres/100 km (22.2 km/l or 52.27 mpg)
    Greenhouse Gases
    O2
    g/km. (
    O2
    -
    Carbon
    dioxide emission)
    Lubrication System
    Wet sump
    Transmission Type Final Drive
    Shaft drive (cardan)
    Fuel Capacity
    14.00 litres (3.70 gallons)
    Overall Width
    815 mm (32.1 inches)
    Overall Height
    960 mm (37.8 inches)
    Overall Length
    2,130 mm (83.9 inches)
    Weight Incl Oil Gas Etc
    187.0 kg (412.3 pounds)
    Seat
    Single seat
    Wheels
    Spoked
    Rear Tyre
    3.5-19
    Front Tyre
    3.5-19
    Rear Brakes
    Expanding brake (drum brake)
    Front Brakes
    Expanding brake (drum brake). Single
    Rear Suspension
    Twin shock-Swingarm
    Front Suspension
    Cartridge
    Rear Brakes Diameter
    200 mm (7.9 inches)
    Front Brakes Diameter
    200 mm (7.9 inches)