BMW R11 Series 3 1931 - Specifications & Review
Article Complete Info
| Articleid | 641110 |
|---|---|
| Category | Allround |
| Make | BMW |
| Model | R11 Series 3 |
| Year | 1931 |
Chassis, Suspension, Brakes & Wheels
| Frametype | Steel-double cradlel |
|---|---|
| Frontbrakes | Expanding brake (drum brake) |
| Frontbrakesdiameter | 200 mm (7.9 inches) |
| Frontsuspension | Plate springe |
| Fronttyre | 3.50-26.00 |
| Rearbrakesdiameter | 55 mm (2.2 inches) |
| Rearsuspension | Rigid |
| Reartyre | 3.50-26.00 |
| Seat | Spring-mounted seat |
Engine & Transmission
| Borexstroke | 78.0 x 78.0 mm (3.1 x 3.1 inches) |
|---|---|
| Clutch | Two plates-dry |
| Compression | 5.5:1 |
| Coolingsystem | Air |
| Displacement | 745.00 ccm (45.46 cubic inches) |
| Enginedetails | Two cylinder boxer, four-stroke |
| Fuelconsumption | 4.50 litres/100 km (22.2 km/l or 52.27 mpg) |
| Fuelsystem | Carburettor. Single SUM CK 3/500 F 1 |
| Gearbox | 3-speed |
| Greenhousegases | 104.4 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Ignition | Magneto |
| Lubricationsystem | Forced feed |
| Power | 18.00 HP (13.1 kW)) @ 3400 RPM |
| Topspeed | 100.0 km/h (62.1 mph) |
| Transmissiontypefinaldrive | Shaft drive (cardan) |
Other Specifications
| Carryingcapacity | 210kg |
|---|---|
| Starter | Kick |
Physical Measures & Capacities
| Fuelcapacity | 14.00 litres (3.70 gallons) |
|---|---|
| Overallheight | 940 mm (37.0 inches) |
| Overalllength | 2,100 mm (82.7 inches) |
| Overallwidth | 890 mm (35.0 inches) |
| Weightincloilgasetc | 162.0 kg (357.1 pounds) |
About BMW R11 Series 3 1931
Introducing the 1931 BMW R11 Series 3: A Timeless Classic
Step back into the golden age of motorcycling with the 1931 BMW R11 Series 3, a striking embodiment of early 20th-century engineering that remains a beloved choice among vintage motorcycle enthusiasts. Positioned in the allround category, the R11 Series 3 was designed for both urban commuting and leisurely rides through the countryside. With its iconic lines and robust build, it captures the essence of German craftsmanship, making it an enduring symbol of reliability and performance from an era when motorcycles began to transform from mere utility vehicles into objects of desire.
Engine Performance and Riding Characteristics
At the heart of the R11 Series 3 lies a powerful two-cylinder boxer engine that displaces 745 cc. This four-stroke marvel produces an impressive 18 horsepower at 3,400 RPM, allowing riders to reach a top speed of 100 km/h (62.1 mph). The engine’s 5.5:1 compression ratio ensures a smooth delivery of power, while the single SUM CK 3/500 F 1 carburettor and magneto ignition system enhance its reliability. Riders will appreciate the bike's spirited acceleration and balanced handling, thanks to its shaft drive and three-speed gearbox. With a fuel consumption of just 4.50 litres per 100 km (an efficient 52.27 mpg), the R11 Series 3 invites you to explore the open road without the constant worry of refueling.
Key Features and Technology
The engineering prowess of the 1931 BMW R11 Series 3 is evident in its steel double cradle frame, which provides a sturdy base for both comfort and stability. The front features an expanding drum brake with a diameter of 200 mm, ensuring confident stopping power, while the rear brake, measuring 55 mm, adds to the bike's overall braking efficiency. The front suspension utilizes a plate spring design, offering a smooth ride over varying terrains, while the rigid rear suspension provides a connection to the road that many modern riders crave. Furthermore, the classic kick starter adds to the motorcycle’s vintage charm, inviting riders to engage with their machine in an authentic manner.
Pros and Cons of the 1931 BMW R11 Series 3
Pros:
- Classic Aesthetics: The timeless design and craftsmanship of the R11 Series 3 make it a standout piece in any collection, appealing to both enthusiasts and casual observers alike.
- Reliable Performance: With a robust boxer engine and efficient fuel consumption, this motorcycle offers reliable performance that's perfect for long rides.
- Smooth Handling: The combination of a sturdy frame and effective suspension allows for a comfortable and balanced ride, whether navigating city streets or winding country roads.
Cons:
- Limited Speed: While the top speed of 100 km/h is respectable for its time, modern riders may find it lacking compared to contemporary motorcycles.
- Basic Technology: The R11 Series 3 lacks modern safety features such as disc brakes and advanced suspension systems, which might not appeal to all riders.
- Maintenance Requirements: As a vintage motorcycle, it may require more frequent maintenance and care to keep it in optimal condition compared to newer models.
In summary, the 1931 BMW R11 Series 3 is not just a motorcycle; it’s a piece of history that resonates with those who appreciate the artistry of engineering and the thrill of the ride. Whether you’re a seasoned collector or a newcomer to the vintage motorcycle scene, the R11 promises a captivating experience on the road.