BMW R37
1925Allround

BMW R37

Key specifications

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

Overview

Introducing the 1925 BMW R37, a remarkable motorcycle that epitomizes the spirit of early 20th-century engineering and innovation. As part of BMW’s illustrious history, the R37 stands out not only as a representation of the brand’s commitment to quality but also as a versatile all-rounder that caters to both enthusiasts and everyday riders. With its unique combination of classic aesthetic and advanced technology for its time, the R37 has become a coveted piece of motorcycling heritage, appealing to collectors and riders who appreciate the charm and character of vintage machines. At the heart of the R37 lies a robust 494cc two-cylinder boxer engine, renowned for its distinctive layout that provides a low center of gravity and exceptional stability. Producing 16.04 horsepower at 4000 RPM, this air-cooled, four-stroke powerplant allows the R37 to reach a commendable top speed of 115 km/h (71.5 mph). The engine’s design is complemented by a 3-speed gearbox and a shaft drive system, ensuring smooth power delivery and effortless handling. Riders will appreciate the engaging experience that comes with the R37, as it offers a unique blend of vintage charm and reliable performance, making it perfect for leisurely rides or spirited jaunts through the countryside. The R37 is equipped with several key features that set it apart from its contemporaries. The steel double cradle frame provides a sturdy foundation, while the leading link front suspension enhances ride comfort and stability, particularly on uneven surfaces. The drum brakes—measuring 150 mm in diameter—offer reliable stopping power, crucial for a motorcycle of this vintage. The single plate dry-cable operated clutch is another testament to BMW’s engineering prowess, ensuring seamless gear transitions. With a fuel capacity of 14 liters, the R37 not only allows for extended rides but also boasts an impressive fuel efficiency of 4.00 liters per 100 km (58.81 mpg), making it a practical choice for riders seeking both adventure and economy. **

Pros

  • Timeless Design: The R37 boasts a classic aesthetic that appeals to vintage motorcycle enthusiasts and collectors alike.
  • Stable Handling: The boxer engine configuration and leading link suspension provide a low center of gravity, resulting in improved stability and handling.
  • Fuel Efficiency: With a fuel consumption rate of 4.00 liters per 100 km, the R37 is both economical and practical for long-distance rides.

Cons

  • Limited Power Output: While charming, the 16.04 HP may feel underwhelming to modern riders accustomed to higher performance machines.
  • Basic Features: The technology and features may be considered sparse by today's standards, lacking modern conveniences such as electric start or advanced braking systems.
  • Weight: At 134 kg (295.4 pounds), the R37 may feel heavy compared to lighter modern motorcycles, potentially affecting maneuverability for some riders.

Technical details

Source specification data

Make
BMW
Model
R37
Category
Allround
Starter
Kick
Power
16.04 HP (11.7 kW)) @ 4000 RPM
Clutch
Single plate dry-cable operated
Gearbox
3-speed
Ignition
Bosh magento
Top Speed
115.0 km/h (71.5 mph)
Fuel System
Carburettor. 26mm
Bore X Stroke
68.0 x 68.0 mm (2.7 x 2.7 inches)
Compression
6.2:1
Displacement
494.00 ccm (30.14 cubic inches)
Cooling System
Air
Engine Details
Two cylinder boxer, four-stroke
Fuel Consumption
4.00 litres/100 km (25.0 km/l or 58.81 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Wet sump
Transmission Type Final Drive
Shaft drive (cardan)
Fuel Capacity
14.00 litres (3.70 gallons)
Overall Width
800 mm (31.5 inches)
Overall Height
950 mm (37.4 inches)
Overall Length
2,100 mm (82.7 inches)
Weight Incl Oil Gas Etc
134.0 kg (295.4 pounds)
Seat
Solo seat with springs
Rear Tyre
2.99-26
Frame Type
Steel doble cradle
Front Tyre
2.99-26
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Rigid
Front Suspension
Leading link
Rear Brakes Diameter
150 mm (5.9 inches)
Front Brakes Diameter
150 mm (5.9 inches)