BMW R47
1928Allround

BMW R47

Key specifications

Engine
494 cc
Power
18 HP
Fuel type
petrol
Fuel capacity
3.7 L
Transmission
3-speed
Front brakes
Expanding brake (drum brake)

Overview

### Introducing the 1928 BMW R47 Step back into the golden age of motorcycling with the 1928 BMW R47, a quintessential allround motorcycle that perfectly encapsulates the spirit of its era. Designed for versatility and reliability, the R47 was positioned as a capable companion for both urban commuting and scenic touring. With its classic aesthetics and robust engineering, this model stands as a testament to BMW's commitment to quality and innovation during the early years of motorcycle manufacturing. Its streamlined silhouette and iconic BMW badge evoke nostalgia among enthusiasts, making it a sought-after piece for collectors and riders alike. ### Engine Performance and Riding Characteristics At the heart of the R47 lies a powerful 494cc two-cylinder boxer engine that produces a respectable 17.95 horsepower at 4,000 RPM. This four-stroke powerplant, with its unique horizontal layout, not only provides a lower center of gravity for improved handling but also delivers a signature throaty growl that resonates with any motorcycle aficionado. Capable of reaching a top speed of 110 km/h (68.4 mph), the R47 offers a spirited ride that channels the freedom of the open road. The 3-speed gearbox, combined with a smooth shaft drive, ensures seamless power delivery while maintaining a low fuel consumption rate of just 3.00 litres per 100 km. Whether navigating twisty backroads or cruising along highways, the R47 provides a delightful blend of acceleration and stability. ### Key Features and Technology The R47 boasts a variety of features that enhance both performance and rider comfort. Its steel double cradle frame provides exceptional rigidity and stability, aiding in confident maneuverability. The leading link front suspension, paired with a rigid rear, ensures a responsive yet comfortable ride, perfect for those long weekend journeys. Safety is not overlooked, thanks to the 150mm expanding drum brakes that offer reliable stopping power. The bike's classic design is complemented by a kick starter, embracing the traditional methods of the time while ensuring ease of use. With a fuel capacity of 14 liters, this vintage machine invites riders to embark on extended adventures without frequent stops. ###

Pros

    Cons

    • Timeless Design: The classic aesthetics and iconic boxer engine layout make the R47 a striking presence on the road and a cherished piece for collectors.
    • Efficient Performance: With low fuel consumption and a respectable top speed, the R47 balances performance with practicality, making it ideal for both short commutes and longer excursions.
    • Robust Engineering: Built with a sturdy steel frame and reliable components, the R47 is a testament to BMW's engineering prowess and durability.
    • Limited Power Output: With just under 18 horsepower, the R47 may feel underpowered compared to modern motorcycles, especially for riders seeking thrilling acceleration.
    • Rigid Rear Suspension: The lack of rear suspension may result in a harsher ride on bumpy roads, affecting comfort on longer journeys.
    • Kick Start Only: The absence of an electric starter can be a drawback for some riders, particularly those accustomed to modern conveniences.

    Technical details

    Source specification data

    Make
    BMW
    Model
    R47
    Category
    Allround
    Starter
    Kick
    Carrying Capacity
    192kg
    Power
    17.95 HP (13.1 kW)) @ 4000 RPM
    Clutch
    Dry-single plate-cable operated
    Gearbox
    3-speed
    Ignition
    Bosh magneto
    Top Speed
    110.0 km/h (68.4 mph)
    Fuel System
    Carburettor. 20mm BMW Spezial
    Bore X Stroke
    68.0 x 68.0 mm (2.7 x 2.7 inches)
    Compression
    5.8:1
    Displacement
    494.00 ccm (30.14 cubic inches)
    Cooling System
    Air
    Engine Details
    Two cylinder boxer, four-stroke
    Fuel Consumption
    3.00 litres/100 km (33.3 km/l or 78.41 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
    800 mm (31.5 inches)
    Overall Height
    950 mm (37.4 inches)
    Overall Length
    2,100 mm (82.7 inches)
    Weight Incl Oil Gas Etc
    126.0 kg (277.8 pounds)
    Rear Tyre
    3.50-27
    Frame Type
    Steel doble cradle
    Front Tyre
    3.50-27
    Front Brakes
    Expanding brake (drum brake)
    Rear Suspension
    Rigid
    Front Suspension
    Leading link
    Front Brakes Diameter
    150 mm (5.9 inches)