Back to Bike FinderYears: 1953 · 1952 · 1951 · 1950
Hercules 311
1952Sportbike

Hercules 311

Key specifications

Engine
123 cc
Power
5 HP
Weight
90 kg
Fuel type
petrol
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

### 1952 Hercules 311: A Slice of Vintage Sport Performance Introducing the 1952 Hercules 311, an iconic motorcycle that embodies the spirit of post-war European innovation. Positioned in the sport category, the Hercules 311 was designed for those who craved both style and performance in a compact package. With its distinctive retro aesthetic and a build that reflects the craftsmanship of the early 1950s, this motorcycle has captured the hearts of vintage enthusiasts and collectors alike. Its lightweight frame and peppy engine make it a delightful ride for both seasoned bikers and those looking to dip their toes into the world of classic motorcycles. At the heart of the Hercules 311 is a robust single-cylinder, two-stroke engine with a displacement of 123cc. This little powerhouse produces a respectable 5 HP at 5000 RPM, allowing riders to reach a top speed of 75 km/h (46.6 mph). The engine’s simplicity is its charm—paired with a Bing 18mm carburettor and air cooling, the 311 offers a thrilling riding experience that emphasizes agility and responsiveness. The lightweight design, tipping the scales at just 90 kg (198.4 pounds), results in an impressive power-to-weight ratio of 0.0556 HP/kg. Whether you’re navigating tight turns or cruising down open roads, the Hercules 311 delivers a spirited performance that keeps the excitement alive. The 1952 Hercules 311 features a well-engineered chassis that balances comfort with sportiness. Its telescopic front suspension ensures a smooth ride over uneven terrain, while the rigid rear suspension offers stability during spirited rides. Both front and rear drum brakes provide reliable stopping power, although they may require a bit of getting used to in terms of feel compared to modern hydraulic systems. The bike's classic design is not only about aesthetics; it incorporates practical features that enhance the riding experience, like the chain-driven final drive and the minimalistic yet effective instrumentation that keeps the rider informed without overwhelming them. **

Pros

  • Lightweight and Agile: At just 90 kg, the Hercules 311 is easy to handle, making it perfect for both new riders and those looking for a nimble bike for city commuting.
  • Classic Design: With its vintage styling and attention to detail, the 311 stands out in a sea of modern motorcycles, appealing to collectors and enthusiasts alike.
  • Simple Mechanics: The uncomplicated two-stroke engine and straightforward design make it relatively easy to maintain and repair, a boon for DIY enthusiasts.

Cons

  • Limited Power: With only 5 HP, the Hercules 311 may feel underpowered for those accustomed to modern machines, especially when riding with a passenger or uphill.
  • Basic Braking System: The drum brakes, while reliable, may not provide the same level of stopping power or responsiveness as contemporary disc brake systems.
  • Rigid Rear Suspension: While it offers stability, the rigid rear suspension might not provide the same level of comfort on longer rides compared to more advanced setups.

Technical details

Source specification data

Make
Hercules
Model
311
Category
Sport
Power
5.00 HP (3.6 kW)) @ 5000 RPM
Top Speed
75.0 km/h (46.6 mph)
Fuel System
Carburettor. Bing 18mm
Bore X Stroke
52.0 x 58.0 mm (2.0 x 2.3 inches)
Displacement
123.00 ccm (7.51 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, two-stroke
Transmission Type Final Drive
Chain
Dry Weight
90.0 kg (198.4 pounds)
Power Weight Ratio
0.0556 HP/kg
Seat
Single
Wheels
Spoked
Rear Tyre
2.50-19
Front Tyre
2.50-19
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Rigid
Front Suspension
Telescopic