BMW R12 Twin carb 1940 - Specifications & Review

R12 Twin carb

Article Complete Info

Articleid131849
CategorySport
MakeBMW
ModelR12 Twin carb
Year1940

Chassis, Suspension, Brakes & Wheels

FrametypeSteel-doble cradle
FrontbrakesExpanding brake (drum brake). Single
Frontbrakesdiameter200 mm (7.9 inches)
FrontsuspensionCartrige
Fronttyre3.50-19
RearbrakesExpanding brake (drum brake)
RearsuspensionRigid-
Reartyre3.5-19
SeatSpring-mounted seat
WheelsSpoked

Engine & Transmission

Borexstroke78.0 x 78.0 mm (3.1 x 3.1 inches)
ClutchDry multiplate-cable operated
Compression5.2:1
CoolingsystemAir
Displacement745.00 ccm (45.46 cubic inches)
EnginedetailsTwo cylinder boxer, four-stroke
FuelsystemCarburettor. Amal
Gearbox4-speed
LubricationsystemWet sump
Power19.99 HP (14.6 kW)) @ 4000 RPM
Topspeed120.0 km/h (74.6 mph)

Other Specifications

Carryingcapacity300
StarterKick

Physical Measures & Capacities

Fuelcapacity14.00 litres (3.70 gallons)
Overallheight940 mm (37.0 inches)
Overalllength2,100 mm (82.7 inches)
Overallwidth900 mm (35.4 inches)
Weightincloilgasetc185.0 kg (407.9 pounds)

About BMW R12 Twin carb 1940

The 1940 BMW R12 Twin Carb: A Timeless Classic

The 1940 BMW R12 Twin Carb stands as a testament to the golden age of motorcycle engineering, embodying a blend of performance and style that continues to captivate enthusiasts today. As a sport category motorcycle, the R12 was designed to deliver an exhilarating riding experience, making it a favorite among riders seeking both speed and comfort. With its distinctive two-cylinder boxer engine and iconic design, the R12 has carved a niche for itself in the annals of motorcycle history, appealing not only to collectors but also to those who appreciate the craftsmanship of vintage machines.

At the heart of the R12 is a robust 745cc air-cooled, four-stroke boxer engine that generates a respectable 19.99 horsepower at 4,000 RPM. This powerplant, paired with a four-speed gearbox, delivers a top speed of 120 km/h (74.6 mph), making it a formidable contender on the roads of its time. Riders will appreciate the linear power delivery and the distinctive thrum of the boxer engine, which provides a unique character that sets the R12 apart from its contemporaries. The engine’s simple yet effective design, combined with a dry multiplate clutch, ensures a smooth and engaging ride, whether navigating city streets or cruising along winding country roads.

The 1940 BMW R12 Twin Carb showcases an array of features that highlight BMW's commitment to innovation and quality. Its steel double-cradle frame and rigid rear suspension contribute to a solid ride, while the cartridge front suspension enhances handling and comfort. The drum brakes, both front and rear, are designed to provide reliable stopping power, although modern riders may find them less responsive compared to contemporary disc systems. With a fuel capacity of 14 liters, this classic bike is also well-equipped for longer journeys, allowing riders to embrace the open road with fewer stops. The nostalgia-inducing kick starter adds an authentic touch to the experience, reminding riders of simpler times when every ride required a bit of effort and engagement.

#### PROs:

  • Classic Design: The R12's timeless aesthetics are a head-turner and a symbol of vintage motorcycle culture.
  • Engaging Riding Experience: The boxer engine provides a unique auditory and tactile experience, enhancing the joy of riding.
  • Strong Community: The R12 is well-regarded among collectors and vintage motorcycle enthusiasts, offering ample opportunities for camaraderie and support.

#### CONs:

  • Limited Braking Performance: While sufficient for its time, the drum brakes may feel inadequate to modern riders accustomed to disc brakes.
  • Weight: At 185 kg (407.9 pounds), the R12 may be considered heavy compared to more contemporary motorcycles, which can affect maneuverability.
  • Kick Start Only: The absence of an electric starter may deter some riders, especially those seeking convenience and ease of use in modern machines.

In summary, the 1940 BMW R12 Twin Carb is not just a motorcycle; it's a piece of history that continues to resonate with those who value both engineering excellence and the spirit of adventure. Whether you're a seasoned collector or a newcomer to the world of vintage rides, the R12 promises an experience that is both nostalgic and exhilarating.

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