BMW R2 Series 1
1931Allround

BMW R2 Series 1

Key specifications

Engine
198 cc
Power
6 HP
Fuel type
petrol
Fuel capacity
2.9 L
Transmission
3-speed
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1931 BMW R2 Series 1, a quintessential motorcycle that embodies the spirit of early 20th-century engineering and design. As part of BMW's foray into the motorcycle market during the post-World War I era, the R2 was crafted as an allround bike, ideal for both city commuting and leisurely country rides. With its classic lines and robust build, this motorcycle carved out a niche for itself among enthusiasts seeking a reliable and stylish ride. The R2 Series 1 stands as a testament to BMW's commitment to quality and innovation, positioning it as a significant player in the realm of vintage motorcycles. At the heart of the R2 Series 1 lies a single-cylinder, four-stroke engine with a displacement of 198cc, delivering a respectable 5.98 horsepower at 3,500 RPM. While this may not seem like a lot by today's standards, the R2's power is perfectly matched to its lightweight frame, achieving a top speed of 95 km/h (59 mph). The air-cooled engine, coupled with a 3-speed gearbox and a shaft drive, offers a smooth and engaging riding experience. The bike's fuel efficiency is noteworthy, boasting an impressive consumption of just 2.75 liters per 100 km, allowing riders to enjoy longer journeys without frequent stops at the pump. The R2 Series 1 comes equipped with several key features that highlight its technological advancements for the time. The pressed steel duplex frame provides strength and stability, while the rigid rear suspension ensures a solid ride. Stopping power is delivered through expanding drum brakes at both the front and rear, each measuring 180 mm in diameter, offering reliable braking performance. In addition, the 11-liter fuel tank secures ample capacity for extended rides, making this motorcycle a dependable companion for any adventure. Kick-starting the engine adds an authentic touch, connecting riders to the tradition of motorcycling in its purest form. **

Pros

  • Fuel Efficiency: The R2 Series 1 boasts impressive fuel consumption, allowing for extended rides without frequent refueling.
  • Classic Aesthetics: Its vintage design appeals to enthusiasts who appreciate the charm of early 20th-century motorcycles.
  • Smooth Performance: The lightweight frame and well-matched engine provide a smooth and engaging riding experience.

Cons

  • Limited Power: With only 5.98 HP, the R2 may struggle to keep up with modern traffic and highway speeds.
  • Basic Features: The technology and features are quite rudimentary compared to contemporary motorcycles, which may not suit all riders.
  • Rigid Suspension: The lack of rear suspension may result in a less comfortable ride over rough terrain, making it less versatile for varied road conditions.

Technical details

Source specification data

Make
BMW
Model
R2 Series 1
Category
Allround
Starter
Kick
Carrying Capacity
200kg
Power
5.98 HP (4.4 kW)) @ 3500 RPM
Clutch
Dry-single plate-cable operated
Gearbox
3-speed
Ignition
Battery
Top Speed
95.0 km/h (59.0 mph)
Fuel System
Carburettor. 19mm
Bore X Stroke
63.0 x 64.0 mm (2.5 x 2.5 inches)
Compression
6.7:1
Displacement
198.00 ccm (12.08 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Fuel Consumption
2.75 litres/100 km (36.4 km/l or 85.53 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Wet sump
Transmission Type Final Drive
Shaft drive (cardan)
Fuel Capacity
11.00 litres (2.91 gallons)
Overall Width
850 mm (33.5 inches)
Overall Height
950 mm (37.4 inches)
Overall Length
1,950 mm (76.8 inches)
Weight Incl Oil Gas Etc
130.0 kg (286.6 pounds)
Seat
Solo seat with springs
Rear Tyre
2.99-25.00
Frame Type
Pressed steel duplex
Front Tyre
2.99-25.00
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Rigid
Front Suspension
Cartridge
Rear Brakes Diameter
180 mm (7.1 inches)
Front Brakes Diameter
180 mm (7.1 inches)