BMW R11 Series 4
1934Allround

BMW R11 Series 4

Key specifications

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

Overview

Introducing the 1934 BMW R11 Series 4: A Vintage Icon of All-Round Performance The 1934 BMW R11 Series 4 stands as a hallmark of motorcycle engineering from the early 20th century. Positioned within the all-round category, this classic beauty represents BMW's commitment to quality and performance, making it a sought-after piece for collectors and enthusiasts alike. With its iconic lines and robust build, the R11 Series 4 not only reflects the design ethos of its time but also showcases the innovative spirit that BMW has maintained over the decades. As an all-rounder, it was built for versatility, appealing to riders who sought both utility and style in their two-wheeled adventures. At the heart of the R11 is its powerful two-cylinder boxer engine, a hallmark of BMW engineering that has become legendary in the motorcycle world. With a displacement of 745 cc and a power output of 18 HP at 3400 RPM, this four-stroke engine offers a satisfying blend of torque and smoothness, allowing riders to cruise comfortably at a top speed of 110 km/h (68.4 mph). The simplicity of its air-cooled design, paired with a 3-speed gearbox and shaft drive, creates a unique riding experience that is both responsive and engaging. Riders will appreciate the bike’s fuel efficiency, consuming just 4.5 litres per 100 km, making it a practical choice for longer rides, while the harmonious balance of the boxer engine ensures stability and control on the road. The R11 Series 4 is not just about performance; it also boasts a number of key features that enhance its appeal. The steel double cradle frame provides a sturdy foundation, while the innovative plate spring front suspension delivers a comfortable ride, even on uneven surfaces. With a fuel capacity of 14 litres, this motorcycle is designed to take you on extended journeys, and the kick starter adds a nostalgic touch to the riding experience. Additionally, the expanding drum brakes ensure reliable stopping power, critical for a bike of this vintage. While it may lack the modern conveniences of today’s motorcycles, the R11 Series 4 captures the essence of the freedom that motorcycling represents. **

Pros

    Cons

    • Iconic Engine Design: The two-cylinder boxer engine offers a unique aesthetic and excellent balance, providing a classic riding experience.
    • Efficient Fuel Consumption: With a consumption rate of 4.5 litres per 100 km, this motorcycle proves to be economical for long rides.
    • Timeless Design: The elegant lines and classic BMW styling make the R11 Series 4 a standout piece in any collection, appealing to both enthusiasts and casual admirers.
    • Limited Speed and Power: With a top speed of 110 km/h, it may feel underwhelming for riders accustomed to modern high-performance motorcycles.
    • Basic Suspension: The rigid rear suspension can lead to a less comfortable ride on bumpy roads compared to contemporary models with advanced suspension technology.
    • Kick Start Mechanism: While nostalgic, the kick starter may not suit every rider's preference, especially those accustomed to electric start systems found in modern bikes.

    Technical details

    Source specification data

    Make
    BMW
    Model
    R11 Series 4
    Category
    Allround
    Starter
    Kick
    Power
    18.00 HP (13.1 kW)) @ 3400 RPM
    Clutch
    Two plates-dry
    Gearbox
    3-speed
    Ignition
    Magneto
    Top Speed
    110.0 km/h (68.4 mph)
    Fuel System
    Carburettor. 24mm Amal
    Bore X Stroke
    78.0 x 78.0 mm (3.1 x 3.1 inches)
    Compression
    5.5:1
    Displacement
    745.00 ccm (45.46 cubic inches)
    Cooling System
    Air
    Engine Details
    Two cylinder boxer, four-stroke
    Fuel Consumption
    4.50 litres/100 km (22.2 km/l or 52.27 mpg)
    Greenhouse Gases
    O2
    g/km. (
    O2
    -
    Carbon
    dioxide emission)
    Lubrication System
    Forced feed
    Transmission Type Final Drive
    Shaft drive (cardan)
    Fuel Capacity
    14.00 litres (3.70 gallons)
    Overall Width
    890 mm (35.0 inches)
    Overall Height
    940 mm (37.0 inches)
    Overall Length
    2,100 mm (82.7 inches)
    Weight Incl Oil Gas Etc
    162.0 kg (357.1 pounds)
    Rear Tyre
    3.50-26.00
    Frame Type
    Steel-double cradlel
    Front Tyre
    3.50-26.00
    Front Brakes
    Expanding brake (drum brake)
    Rear Suspension
    Rigid
    Front Suspension
    Plate springe
    Rear Brakes Diameter
    55 mm (2.2 inches)
    Front Brakes Diameter
    200 mm (7.9 inches)