BMW R39 1927 - Specifications & Review

R39

Article Complete Info

Articleid918406
CategoryNaked bike
MakeBMW
ModelR39
Year1927

Chassis, Suspension, Brakes & Wheels

FrametypeSteel doble cradle
FrontbrakesExpanding brake (drum brake)
FrontsuspensionLeading link
Fronttyre3.5-27
RearsuspensionRigid
Reartyre3.5-27

Engine & Transmission

Borexstroke68.0 x 68.0 mm (2.7 x 2.7 inches)
ClutchDry-single plate-cable operated
Compression6.1:1
CoolingsystemAir
Displacement247.00 ccm (15.07 cubic inches)
EnginedetailsSingle cylinder, four-stroke
FuelsystemCarburettor. 20mm BMW Spezial
Gearbox3-speed
LubricationsystemWet sump
Power5.98 HP (4.4 kW)) @ 4000 RPM
Topspeed100.0 km/h (62.1 mph)
TransmissiontypefinaldriveShaft drive (cardan)

Physical Measures & Capacities

Overallheight950 mm (37.4 inches)
Overalllength2,050 mm (80.7 inches)
Overallwidth800 mm (31.5 inches)
Weightincloilgasetc110.0 kg (242.5 pounds)

About BMW R39 1927

Introducing the 1927 BMW R39: A Classic Naked Bike

Step back in time to the roaring twenties, when motorcycles began to capture the imagination of riders worldwide. Enter the 1927 BMW R39, a stunning representation of early German engineering and design. As a naked bike, the R39 was positioned to appeal to those who craved an unadulterated riding experience, combining performance with simplicity. This motorcycle is not just a means of transportation; it is a symbol of freedom and adventure, making it a coveted piece for collectors and vintage motorcycle enthusiasts alike.

Engine Performance and Riding Characteristics

At the heart of the R39 lies a robust 247cc single-cylinder, four-stroke engine, which produces a respectable 5.98 horsepower at 4,000 RPM. While it may not seem like a powerhouse by today’s standards, this motorcycle's lightweight frame—tipping the scales at just 110 kg (242.5 pounds)—ensures that it delivers an exhilarating ride. With a top speed of 100 km/h (62.1 mph), the R39 offers a delightful blend of agility and stability, allowing riders to navigate both urban streets and winding country roads with ease. The three-speed gearbox coupled with a shaft drive provides seamless power delivery, giving riders confidence in their maneuvers.

Key Features and Technology

The R39 showcases a steel double cradle frame, which not only contributes to its rigidity but also offers a classic aesthetic that stands the test of time. The leading link front suspension offers improved handling and stability, particularly during turns, while the rigid rear suspension maintains the bike's simplicity and enhances its classic look. Equipped with a 20mm BMW Spezial carburettor and an air-cooling system, this vintage gem emphasizes mechanical purity and reliability. The expanding drum brakes provide adequate stopping power for the era, although modern standards may leave riders wanting more in terms of braking performance.

Pros and Cons of the 1927 BMW R39

Pros:

  1. Classic Aesthetic: The design and engineering encapsulate the charm of the late 1920s, making it a great addition to any vintage motorcycle collection.
  2. Lightweight and Agile: Weighing only 110 kg, the R39 is nimble and easy to handle, perfect for both novice and experienced riders looking for a classic experience.
  3. Simplicity in Mechanics: With a straightforward engine and minimal electronic components, the R39 is easy to maintain for those who appreciate hands-on care.

Cons:

  1. Limited Power Output: With only 5.98 HP, it may not satisfy those seeking high-performance thrills typical of modern motorcycles.
  2. Basic Braking System: The drum brakes may feel inadequate compared to contemporary disc brakes, requiring more care when slowing down.
  3. Rigid Rear Suspension: While it adds to the classic look, the rigid rear suspension can result in a less comfortable ride over bumpy terrain.

In summary, the 1927 BMW R39 is a motorcycle that embodies the spirit of early motorcycling, merging classic design with reliable performance. Whether you’re a collector, a vintage ride enthusiast, or someone simply looking to experience the past, the R39 promises an unforgettable journey through history.

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