
BMW R71
Key specifications
Overview
### 1939 BMW R71: A Timeless Classic in Custom-Cruiser Design The 1939 BMW R71 is an iconic motorcycle that embodies the essence of pre-war German engineering, combining classic aesthetics with robust performance. Positioned as a custom-cruiser, the R71 was designed for riders seeking both style and substance. With its distinctive lines and vintage charm, the R71 has garnered a loyal following among enthusiasts and collectors alike. Its historical significance is underscored by its influence on subsequent models, including the famed BMW R75, which was developed during World War II. The R71 is not just a motorcycle; it's a piece of history that resonates with the spirit of freedom and adventure. At the heart of the R71 lies a powerful two-cylinder boxer engine with a displacement of 746 cc. Producing 22.03 horsepower at 4,600 RPM, this air-cooled, four-stroke powerplant delivers a delightful riding experience. Riders can expect a top speed of 125 km/h (77.7 mph), making it more than capable of cruising on open roads. The engine's design, featuring a balanced bore and stroke of 78 mm, contributes to its smooth and reliable performance. The 4-speed gearbox and shaft drive system not only enhance the riding experience but also ensure exceptional torque delivery. With a fuel consumption rate of just 4.50 liters per 100 kilometers (52.27 mpg), the R71 offers a commendable range for long-distance rides. The R71's chassis and suspension are a testament to BMW's commitment to quality and comfort. It features a tubular steel duplex cradle frame that provides both rigidity and agility, complemented by cartridge front suspension and a twin shock-swingarm setup at the rear. The motorcycle is equipped with 200 mm drum brakes on both the front and rear, ensuring reliable stopping power. With a weight of 187 kg (412.3 pounds), the R71 strikes a balance between stability and maneuverability. Riders will appreciate the generous 14-liter fuel capacity, which allows for extended journeys without the constant need to refuel. Adding to its old-world charm, the R71 employs a kick starter, inviting riders to engage with their machine in a more hands-on manner. ####
Pros
Cons
- Classic Design: The R71’s vintage aesthetics appeal to classic motorcycle enthusiasts, making it a standout in any collection.
- Reliable Performance: With a capable boxer engine and smooth power delivery, this motorcycle offers a satisfying ride, whether for leisurely cruises or spirited outings.
- Comfortable Ride: The thoughtful suspension setup and ergonomic design provide a comfortable riding experience over long distances.
- Limited Top Speed: While adequate for cruising, the top speed of 125 km/h may not satisfy those looking for high-performance thrills.
- Kick Starter Only: The absence of an electric starter might deter some riders who prefer modern conveniences, especially in challenging conditions.
- Weight: At 187 kg, the R71 may feel cumbersome for some riders, particularly during slow-speed maneuvers or in tight spaces.
Technical details
Source specification data
- Make
- BMW
- Model
- R71
- Category
- Custom-cruiser
- Starter
- Kick
- Power
- 22.03 HP (16.1 kW)) @ 4600 RPM
- Clutch
- Dry-single plate-cable operated
- Gearbox
- 4-speed
- Top Speed
- 125.0 km/h (77.7 mph)
- Fuel System
- Carburettor. Graetzin G24
- Bore X Stroke
- 78.0 x 78.0 mm (3.1 x 3.1 inches)
- Compression
- 5.5:1
- Displacement
- 746.00 ccm (45.52 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
- Wet sump
- Transmission Type Final Drive
- Shaft drive (cardan)
- Fuel Capacity
- 14.00 litres (3.70 gallons)
- Overall Width
- 815 mm (32.1 inches)
- Overall Height
- 960 mm (37.8 inches)
- Overall Length
- 2,130 mm (83.9 inches)
- Weight Incl Oil Gas Etc
- 187.0 kg (412.3 pounds)
- Seat
- Single seat
- Wheels
- Spoked
- Rear Tyre
- 3.5-19
- Frame Type
- Tubular steal duplex cradle
- Front Tyre
- 3.5-19
- Rear Brakes
- Expanding brake (drum brake)
- Front Brakes
- Expanding brake (drum brake). Single
- Rear Suspension
- Twin shock-Swingarm
- Front Suspension
- Cartridge
- Rear Brakes Diameter
- 200 mm (7.9 inches)
- Front Brakes Diameter
- 200 mm (7.9 inches)