BMW R28 Military
1964Allround

BMW R28 Military

Key specifications

Engine
247 cc
Power
18 HP
Fuel type
petrol
Fuel capacity
4.0 L
Transmission
4-speed
Seat height
31 mm
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1964 BMW R28 Military motorcycle, a remarkable blend of rugged durability and classic engineering, perfectly positioned in the all-round category of the motorcycle market. Originally designed for military use, the R28 embodies the ethos of BMW's commitment to quality and performance, making it a sought-after classic among motorcycle enthusiasts and collectors alike. With its distinctive styling, clean lines, and robust build, this motorcycle not only serves as a nod to the past but stands out with its impressive capabilities, making it a versatile choice for both casual rides and serious adventures. At the heart of the R28 is a spirited 247cc single-cylinder four-stroke engine, delivering a punchy 17.95 HP at a lively 7400 RPM. This power allows the R28 to achieve a top speed of 105 km/h (65.2 mph), providing a thrilling ride that belies its modest engine size. The combination of an 8.2:1 compression ratio and a rubber-mounted carburettor ensures a smooth ride, while the air cooling system keeps the engine operating optimally, even during extended journeys. The motorcycle is equipped with a 4-speed gearbox and a reliable shaft drive, which not only simplifies maintenance but also enhances the overall durability of the machine. With an impressive fuel consumption of just 3.90 litres per 100 km, or 60.31 MPG, the R28 is economical, allowing riders to enjoy long rides without frequent stops at the fuel pump. The R28's design showcases a steel single cradle frame that is both lightweight and sturdy, allowing it to handle a variety of terrains with ease. The front and rear drum brakes, each measuring 160 mm in diameter, provide reliable stopping power, while the cartridge front suspension and twin shock-swingarm rear suspension offer a comfortable and controlled ride. With a seat height of 785 mm, this motorcycle is accessible for a wide range of riders. Enthusiasts will also appreciate the thoughtful details, such as the kick starter, which adds to the classic charm and gives riders a genuine connection to the machine. The R28's 15-litre fuel tank ensures you can venture far without worrying about running dry, making it a capable companion for both on-road and off-road escapades. **

Pros

  • Robust Performance: The 247cc engine delivers reliable power and excellent fuel efficiency, making it suitable for both urban commuting and countryside explorations.
  • Classic Design: Timeless styling and build quality that appeals to vintage motorcycle enthusiasts and collectors.
  • Durable Construction: The steel frame and reliable shaft drive enhance durability, ensuring the R28 stands the test of time.

Cons

  • Limited Power for High Speeds: While it can reach 105 km/h, the power output may feel limited compared to modern motorcycles, especially on highways.
  • Drum Brakes: The traditional drum brakes may not provide the stopping power and responsiveness of modern disc brake systems.
  • Kick Starter Only: The absence of an electric starter may deter some riders who prefer the convenience of modern ignition systems.

Technical details

Source specification data

Make
BMW
Model
R28 Military
Category
Allround
Light
160mm diameter headlamp
Starter
Kick
Carrying Capacity
375kg
Power
17.95 HP (13.1 kW)) @ 7400 RPM
Clutch
Single plate dry-cable operated
Gearbox
4-speed
Ignition
Centrifugal
Top Speed
105.0 km/h (65.2 mph)
Fuel System
Carburettor. Rubber mounted slide
Bore X Stroke
68.0 x 68.0 mm (2.7 x 2.7 inches)
Compression
8.2:1
Displacement
247.00 ccm (15.07 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Fuel Consumption
3.90 litres/100 km (25.6 km/l or 60.31 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Wet sump
Transmission Type Final Drive
Shaft drive (cardan)
Seat Height
785 mm (30.9 inches) If adjustable, lowest setting.
Fuel Capacity
15.00 litres (3.96 gallons)
Overall Width
790 mm (31.1 inches)
Overall Height
1,010 mm (39.8 inches)
Overall Length
2,080 mm (81.9 inches)
Ground Clearance
170 mm (6.7 inches)
Weight Incl Oil Gas Etc
155.0 kg (341.7 pounds)
Seat
Spring-mounted seat
Rear Tyre
3.27-18
Frame Type
Steel single cradle
Front Tyre
3.27-18
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Twin shock-Swingarm
Front Suspension
Cartridge
Rear Wheel Travel
105 mm (4.1 inches)
Front Wheel Travel
126 mm (5.0 inches)
Rear Brakes Diameter
160 mm (6.3 inches)
Front Brakes Diameter
160 mm (6.3 inches)