
BMW R42
Key specifications
Overview
Introducing the 1928 BMW R42: A Classic Allrounder Step back in time to the late 1920s, when motorcycling was transforming into a thrilling mode of transportation, and meet the BMW R42. Launched in 1928, this iconic model signified a pivotal moment for BMW as it entered the motorcycle market with a robust and versatile design. Positioned as an allround motorcycle, the R42 was engineered to cater to a vast array of riders—from casual enthusiasts to those seeking spirited rides across the open road. Its classic styling, paired with BMW’s commitment to quality, quickly established the R42 as a respected choice among motorcyclists of the era. At the heart of the R42 lies its impressive 494cc two-cylinder boxer engine, which delivers a respectable 11.96 horsepower at 3,400 RPM. This four-stroke powerhouse, with a balanced bore and stroke of 68mm, is renowned for its distinctive sound and character. Riders will appreciate the smooth power delivery and the capability to reach a top speed of 95 km/h (59 mph), making it suitable for both city commuting and weekend getaways. The 3-speed gearbox and shaft drive offer a reliable and engaging riding experience, while the air-cooled system ensures longevity even during extended journeys. The R42’s rigid rear suspension contributes to its vintage charm, providing a ride that feels connected to the road. The BMW R42 is not just about raw power; it also boasts several features that highlight the ingenuity of its time. The steel double cradle frame ensures stability and durability, while the leading-link front suspension enhances cornering capabilities. The expanding drum brakes, with a diameter of 150 mm, offer sufficient stopping power, a necessity in an era when brakes were still evolving. Complemented by a kick starter, the R42 seamlessly blends simplicity with function, making it a reliable companion for any ride. Whether you're cruising through town or embarking on an adventure, the R42 stands as a testament to BMW's engineering prowess and commitment to rider satisfaction. **
Pros
Cons
- Timeless Design: The classic aesthetics and iconic BMW styling make it a coveted piece for collectors and enthusiasts alike.
- Reliable Engine: The boxer engine configuration offers smooth performance and a uniquely engaging riding experience.
- Sturdy Construction: Built with a robust steel frame and solid components, the R42 is designed to withstand the rigors of the road.
- Limited Speed and Power: While it offers decent performance for its time, modern standards may find the R42 lacking in acceleration and top speed.
- Rigid Suspension: The rear rigid suspension can lead to a less comfortable ride on bumpy roads compared to modern motorcycles with advanced suspension systems.
- Basic Features: Lacking modern conveniences such as electric start and advanced braking systems, the R42 requires a more hands-on approach to riding and maintenance.
Technical details
Source specification data
- Make
- BMW
- Model
- R42
- Category
- Allround
- Starter
- Kick
- Power
- 11.96 HP (8.7 kW)) @ 3400 RPM
- Clutch
- Dry-single plate-cable operated
- Gearbox
- 3-speed
- Top Speed
- 95.0 km/h (59.0 mph)
- Fuel System
- Carburettor. 20mm BMW Spezial
- Bore X Stroke
- 68.0 x 68.0 mm (2.7 x 2.7 inches)
- Compression
- 4.9:1
- Displacement
- 494.00 ccm (30.14 cubic inches)
- Cooling System
- Air
- Engine Details
- Two cylinder boxer, four-stroke
- Lubrication System
- Wet sump
- Transmission Type Final Drive
- Shaft drive (cardan)
- 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
- 126.0 kg (277.8 pounds)
- Seat
- Single seat
- Rear Tyre
- 3.5-26
- Frame Type
- Steel doble cradle
- Front Tyre
- 3.5-26
- Front Brakes
- Expanding brake (drum brake)
- Rear Suspension
- Rigid
- Front Suspension
- Leading link
- Front Brakes Diameter
- 150 mm (5.9 inches)