
Douglas Dragonfly
Key specifications
Overview
Introducing the 1955 Douglas Dragonfly: A Vintage Sport Icon Nestled in the rich tapestry of mid-century motorcycle history, the 1955 Douglas Dragonfly stands as a testament to the innovative spirit of British engineering. Positioned within the sport category, this motorcycle captures the essence of post-war optimism, combining style with a purpose-built performance. With its sleek lines and distinctive frame, the Dragonfly is not just a motorcycle; it’s a piece of art that resonates with enthusiasts and collectors alike. Designed for those who seek both agility and vintage charm, this machine has become a revered symbol of its era, embodying the adventurous spirit of the open road. At the heart of the Dragonfly lies a 348 cc twin-cylinder, four-stroke engine that delivers a respectable 17 horsepower at 5,500 RPM. Though modest by today’s standards, this power output offers a lively ride, particularly given the bike's lightweight design at just 166 kg (366 pounds). The Dragonfly’s engine is paired with a traditional carburettor fuel system and coil ignition, creating a responsive and engaging riding experience. Coupled with a chain final drive, riders will appreciate the seamless power delivery that makes navigating twisty roads and city streets exhilarating. With a fuel consumption rate of 4.3 litres per 100 km, the Dragonfly offers commendable efficiency, allowing riders to enjoy extended journeys without frequent stops at the pump. The Douglas Dragonfly is engineered with a tubular duplex cradle frame that not only enhances durability but also contributes to the motorcycle's nimble handling characteristics. The leading link front suspension, combined with hydraulic shock absorbers at the rear, provides a smooth ride over varied surfaces, making it a versatile choice for both rural and urban adventures. Stopping power is delivered through reliable drum brakes at both the front and rear, ensuring a reassuring grip when it matters most. With a fuel capacity of 25 litres (6.61 gallons), the Dragonfly is equipped for longer rides, allowing enthusiasts to enjoy the freedom of the road without constant refueling. **
Pros
Cons
- Timeless Design: The classic aesthetics and unique frame of the Dragonfly make it a head-turner, ideal for vintage motorcycle shows and gatherings.
- Lightweight & Agile: Weighing in at just 166 kg, the Dragonfly offers exceptional maneuverability, perfect for both city commuting and spirited rides in the countryside.
- Fuel Efficient: With impressive fuel economy of 54.7 miles per gallon, riders can enjoy longer journeys without worrying about frequent stops at gas stations.
- Limited Power Output: The 17 HP engine may not satisfy those seeking high-performance thrills, particularly compared to modern sport motorcycles.
- Drum Brakes: While reliable for its time, the drum brake system may not inspire confidence for riders accustomed to the superior stopping power of modern disc brakes.
- Vibration: The vintage engine design may produce noticeable vibrations at higher RPMs, which could detract from the comfort on longer rides.
Technical details
Source specification data
- Make
- Douglas
- Model
- Dragonfly
- Category
- Sport
- Power
- 17.00 HP (12.4 kW)) @ 5500 RPM
- Ignition
- Coil
- Fuel System
- Carburettor
- Displacement
- 348.00 ccm (21.23 cubic inches)
- Engine Details
- Twin, four-stroke
- Fuel Consumption
- 4.30 litres/100 km (23.3 km/l or 54.70 mpg)
- Greenhouse Gases
- O2
- g/km. (
- O2
- -
- Carbon
- dioxide emission)
- Transmission Type Final Drive
- Chain
- Dry Weight
- 166.0 kg (366.0 pounds)
- Fuel Capacity
- 25.00 litres (6.61 gallons)
- Power Weight Ratio
- 0.1024 HP/kg
- Seat
- Dual
- Wheels
- Spoked
- Frame Type
- Tubular duplex cradle
- Rear Brakes
- Expanding brake (drum brake)
- Front Brakes
- Expanding brake (drum brake)
- Rear Suspension
- Hydraulic Shock Absorber
- Front Suspension
- Leading link