BMW R12 Twin carb 1936 - Specifications & Review

Introducing the 1936 BMW R12 Twin Carb: A Classic Sport Motorcycle

The 1936 BMW R12 Twin Carb is a quintessential representation of the golden age of motorcycle engineering, where form and function harmoniously converge. Positioned as a sport motorcycle, the R12 was designed for enthusiasts seeking a spirited ride combined with the robust reliability that BMW is renowned for. Its distinctive design, complete with the iconic boxer engine, makes it a standout not only on the road but also at vintage motorcycle shows, where collectors and enthusiasts alike gather to admire its timeless elegance and engineering prowess.

Engine Performance and Riding Characteristics

At the heart of the R12 lies a 745cc two-cylinder boxer engine, delivering a spirited 19.99 horsepower at 4,000 RPM. This robust powerplant is paired with a smooth 4-speed gearbox, allowing riders to harness the thrill of acceleration while maintaining a top speed of 120 km/h (74.6 mph). The boxer configuration not only contributes to the motorcycle's low center of gravity but also enhances its stability, making cornering a delight. With a compression ratio of 5.2:1 and an Amal carburetor fueling the engine, the R12 achieves a commendable fuel consumption rate of 4.50 litres per 100 km, translating to approximately 52.27 mpg. Riders can therefore enjoy longer journeys with fewer stops, making the R12 an ideal companion for both spirited rides and leisurely explorations.

Key Features and Technology

The R12’s design showcases a robust steel double cradle frame, which provides incredible rigidity and support for the rider, resulting in a comfortable and controlled ride. The suspension system features a cartridge front setup paired with a rigid rear, delivering a balanced ride quality that is both responsive and forgiving. The stopping power comes from single expanding drum brakes both front and rear, with a 200 mm diameter in the front, ensuring that the motorcycle can come to a halt efficiently. A kick starter adds to the vintage charm, harkening back to a time when motorcycles were all about the rider’s connection with the machine. With a fuel capacity of 14 liters, the R12 allows for extended journeys without the constant worry of refueling, solidifying its status as a practical yet stylish choice for the sport rider.

Pros and Cons of the 1936 BMW R12 Twin Carb

Pros:

1. Timeless Design: The classic aesthetic of the R12 is a major draw, appealing to vintage motorcycle enthusiasts and collectors.
2. Strong Engine Performance: The boxer engine provides excellent torque delivery and a unique riding experience that distinguishes it from inline configurations.
3. Fuel Efficiency: With a fuel consumption of 52.27 mpg, the R12 is surprisingly economical for its era, making it suitable for longer rides.

Cons:

1. Limited Speed: While 74.6 mph is respectable for the time, modern sport motorcycles far exceed this, potentially limiting its appeal for those seeking high-speed thrills.
2. Basic Technology: The R12 lacks advanced features such as disc brakes or modern suspension, which may deter riders accustomed to contemporary performance.
3. Kick Start Only: The absence of an electric start may pose a challenge for some riders, especially in adverse conditions or during cold starts.

In summary, the 1936 BMW R12 Twin Carb is a motorcycle that beautifully encapsulates the spirit of its era while offering a unique blend of style, performance, and nostalgia. It remains an enduring favorite among vintage motorcycle enthusiasts, proving that true craftsmanship stands the test of time.