BMW R11 Series 1
1930Allround

BMW R11 Series 1

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 1930 BMW R11 Series 1, a motorcycle that embodies the spirit of early 20th-century engineering excellence. Positioned as an all-rounder in the market, the R11 Series 1 marked a significant evolution in BMW's motorcycle lineage, blending innovative design with robust performance. This model was not just a means of transportation; it was a statement of engineering prowess and a symbol of freedom on two wheels. With its distinctive styling and an air of sophistication, the R11 Series 1 quickly became a favorite among enthusiasts and riders who appreciated its blend of functionality and elegance. At the heart of the R11 Series 1 lies a 745cc two-cylinder boxer engine that produces a respectable 18 horsepower at 3,400 RPM. This four-stroke powerhouse is not only capable of propelling the bike to a top speed of 95 km/h (59 mph) but also delivers a smooth and predictable ride, thanks to its well-designed gearbox and shaft final drive. The bike’s compression ratio of 5.5:1, combined with its 24mm carburettor and magneto ignition, ensures a reliable performance, while the air cooling system keeps the engine running efficiently. Riders will appreciate the bike’s fuel consumption of just 4.5 litres per 100 km, making it an economical choice for long-distance rides and daily commutes alike. The R11 Series 1 is a testament to BMW's commitment to quality, featuring a sturdy steel double cradle frame that provides excellent stability and handling. The front suspension employs a plate spring design, which aids in absorbing bumps on the road, while the rear remains rigid, offering a classic riding experience. Braking power is delivered through an expanding drum brake system, with a 200 mm diameter front brake that ensures confident stopping power, complemented by a smaller 55 mm rear brake. With a weight of 162 kg (357 lbs) and dimensions that strike a balance between agility and comfort, the R11 Series 1 is designed for both spirited rides and leisurely cruising. **

Pros

  • Timeless Design: The R11 Series 1’s classic styling and engineering make it a standout piece for collectors and enthusiasts.
  • Reliable Performance: With its boxer engine and efficient fuel consumption, this motorcycle offers a dependable and economical ride.
  • Comfortable Handling: The well-balanced chassis and front suspension lend themselves to a smooth, enjoyable riding experience.

Cons

  • Limited Top Speed: While adequate for its time, the top speed of 95 km/h may feel limiting compared to modern motorcycles.
  • Rigid Rear Suspension: The lack of rear suspension may lead to a less comfortable ride over rough terrain.
  • Kick Starter Only: The absence of an electric starter means riders need to rely on their physical effort to start the engine, which may not appeal to everyone.

Technical details

Source specification data

Make
BMW
Model
R11 Series 1
Category
Allround
Starter
Kick
Carrying Capacity
210kg
Power
18.00 HP (13.1 kW)) @ 3400 RPM
Clutch
Two plates-dry
Gearbox
3-speed
Ignition
Magneto
Top Speed
95.0 km/h (59.0 mph)
Fuel System
Carburettor. BMW single 24mm
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)
Seat
Spring-mounted seat
Rear Tyre
3.25-26.00
Frame Type
Steel-double cradlel
Front Tyre
3.25-26.00
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)