This 1934 BMW R7 prototype is one of the most talked about and best-loved motorcycles of the 1930s, yet it never left the factory, and was known only through a single, mysterious photo for over 70 years.
When completed in 1934, the R7 wasn’t exhibited of press-released and appears to have been shelved immediately. Complicated forces worked against the R7. While the prototype is a hand fabricated one-off, actual production would require huge investment in tooling for the metal pressings, new casting for the engine, gearbox, and cylinders, plus set-up for the unique internal parts. Internal factory politics certainly played a hand as well. The BMW team saw the R7 as impractical in the owners would need specialist mechanics.
Clamor arose in the 1980s to revive the R7; it wasn’t until 2005 the task was handed to two legendary restorers: Armin Frey undertook to mechanicals, while Hans Keckeisen massaged the sheet metal.
The 1934 R7 prototype is an unquestioned design success – a graceful and beautiful study of flowing line, curves, and feminine masses.
Key Features and Specifications
- Manufacturer: BMW Motorrad
- Model: R7
- Year: 1934 (Prototype)
- Engine:
- Type: Boxer twin, four-stroke
- Displacement: 800 cc
- Bore x Stroke: Approximately 78 mm x 78 mm
- Compression Ratio: 5.8:1
- Power Output: Approximately 35 horsepower at 5,000 rpm
- Top Speed: Around 90 mph (145 km/h)
- Transmission: 4-speed manual
- Frame: Pressed steel frame
- Suspension:
- Front: Telescopic fork (one of the first uses in motorcycle design)
- Rear: Rigid (no rear suspension)
- Brakes:
- Front: Drum brake
- Rear: Drum brake
- Weight: Approximately 165 kg (364 lbs)
- Fuel Capacity: Approximately 14 liters (3.7 gallons)
- Design: Art Deco styling with streamlined bodywork, integrated fuel tank and fenders, and an enclosed drivetrain.
Design and Features
- Art Deco Styling: The 1934 BMW R7 featured elegant and aerodynamic lines, reflecting the Art Deco movement of the time. Its streamlined bodywork and integrated components were ahead of its time.
- Enclosed Drivetrain: The R7 had an enclosed driveshaft and gearbox, which not only protected these components from dirt and debris but also contributed to the bike's clean and futuristic appearance.
- Pressed Steel Frame: The use of a pressed steel frame was innovative, providing a rigid and durable structure while reducing weight.
- Telescopic Fork: One of the earliest uses of telescopic forks in motorcycle design, providing improved front suspension and handling.
You may purchase a print of the 1934 BMW R7 in our online gallery.