Sunbeam S7 500 1946 - Specifications & Review
Article Complete Info
| Articleid | 812621 |
|---|---|
| Category | Sport touring |
| Make | Sunbeam |
| Model | S7 500 |
| Year | 1946 |
Chassis, Suspension, Brakes & Wheels
| Frametype | Twin cradle |
|---|---|
| Frontbrakes | Expanding brake (drum brake) |
| Frontbrakesdiameter | 200 mm (7.9 inches) |
| Frontsuspension | Telescopic |
| Fronttyre | 4.50-16 |
| Rearbrakes | Expanding brake (drum brake) |
| Rearbrakesdiameter | 200 mm (7.9 inches) |
| Rearsuspension | Plungers |
| Reartyre | 4.50-16 |
| Seat | Single |
| Wheels | Spoked |
Engine & Transmission
| Borexstroke | 70.0 x 63.5 mm (2.8 x 2.5 inches) |
|---|---|
| Clutch | Dry singleplate |
| Compression | 6.5:1 |
| Coolingsystem | Oil & air |
| Displacement | 487.00 ccm (29.72 cubic inches) |
| Enginedetails | Twin, four-stroke |
| Fuelsystem | Carburettor |
| Lubricationsystem | Wet sump |
| Power | 24.00 HP (17.5 kW)) @ 5800 RPM |
| Topspeed | 121.0 km/h (75.2 mph) |
| Transmissiontypefinaldrive | Shaft drive (cardan) |
Other Specifications
| Coloroptions | Black/ green |
|---|---|
| Starter | Kick |
Physical Measures & Capacities
| Dryweight | 194.0 kg (427.7 pounds) |
|---|---|
| Powerweightratio | 0.1237 HP/kg |
About Sunbeam S7 500 1946
Introducing the 1946 Sunbeam S7 500
Step into the golden age of motorcycling with the 1946 Sunbeam S7 500, a remarkable sport touring motorcycle that stands as a testament to British engineering excellence. Emerging just after World War II, the S7 500 was designed for those who craved both performance and comfort. It carved out a niche for itself among enthusiasts looking for a reliable yet stylish ride that could tackle long distances with ease. With its sleek lines and distinctive aesthetics, this motorcycle not only embodies the spirit of adventure but also serves as a rolling piece of history, appealing to collectors and riders alike.
Engine Performance and Riding Characteristics
At the heart of the S7 500 lies a robust 487 cc twin-cylinder, four-stroke engine that delivers a spirited 24 horsepower at a lively 5800 RPM. With a compression ratio of 6.5:1, this machine is not only capable of reaching a top speed of 121 km/h (75.2 mph) but does so with a smoothness that belies its vintage roots. The oil and air cooling system ensures that the engine remains efficient even during long rides, while the dry single-plate clutch offers a reliable transfer of power to the road. Riders will appreciate the smoothness and balance provided by the shaft drive system, which minimizes maintenance and enhances the overall riding experience.
Key Features and Technology
The S7 500 is not just about power; it’s also packed with features that enhance comfort and usability. Its twin cradle frame provides stability, complemented by a telescopic front suspension and plungers at the rear for a plush ride. Both front and rear drum brakes, boasting a diameter of 200 mm, ensure effective stopping power, essential for the spirited rides this motorcycle promises. Starting the bike is done the traditional way with a kick starter, and its classic color options of black and green add a touch of vintage flair, making it a striking presence on any road.
Pros and Cons
Pros:
- Classic Aesthetics: The S7 500 showcases a timeless design that appeals to vintage enthusiasts.
- Comfortable Ride: The combination of its frame design and suspension features provides a smooth and enjoyable riding experience.
- Reliable Engine: The well-engineered twin-cylinder engine offers a good balance of power and economy.
Cons:
- Weight: At 194 kg (427.7 lbs), the bike may feel heavy for newer riders or those accustomed to lighter models.
- Drum Brakes: While effective, drum brakes may not provide the same stopping power as modern disc brakes, particularly under heavy use.
- Kick Starter: The traditional kick-start mechanism can be less convenient for those used to electric starters found on contemporary motorcycles.
The 1946 Sunbeam S7 500 is more than just a motorcycle; it's a piece of history that offers a blend of performance, comfort, and style for those who appreciate the art of motorcycling. Whether you're cruising through the countryside or attending a vintage bike show, the S7 500 is sure to turn heads and ignite passion among fellow riders.