Riding my Yamaha RD350 YPVS

The Yamaha RD350 YPVS (Yamaha Power Valve System) is a high-performance two-stroke motorcycle produced by Yamaha during the 1980s. It was an evolution of the RD350 series, notable for its advanced technology and significant impact on the motorcycling world. Here's an overview of its key features and characteristics:

1. Engine
Type: 347cc, liquid-cooled, parallel-twin, two-stroke engine.
Power Valve System: The YPVS (Yamaha Power Valve System) was the standout feature, a variable exhaust valve system that adjusted port timing based on engine RPM. This provided a broad powerband, improving low-end torque while retaining high-end performance.
Horsepower: Approximately 59–63 hp (varied slightly depending on the market and year).
Fuel System: Dual carburetors.
2. Chassis and Suspension
Frame: Lightweight tubular steel frame designed for agility and sporty handling.
Front Suspension: Telescopic forks.
Rear Suspension: Mono-shock system, contributing to improved stability and comfort.
Brakes: Disc brakes at both front and rear, offering strong stopping power.
3. Design
Styling: Sleek and aerodynamic with a race-inspired aesthetic, featuring a distinctive fuel tank, sharp tail section, and twin exhaust pipes.
Weight: Approximately 152–156 kg (dry weight), contributing to its nimble handling.
Instrumentation: Analog gauges for speed, RPM, and other indicators.
4. Performance
Top Speed: Around 180–200 km/h (112–124 mph), depending on conditions and modifications.
Acceleration: Quick and exhilarating, especially when the power valve engages.
Handling: Renowned for its sharp, responsive handling, making it a favorite among sport riders.
5. Legacy
The RD350 YPVS became iconic for its thrilling performance and advanced engineering, influencing future sportbike designs.
It was marketed under different names in some regions, such as the RZ350 in North America.
It gained popularity among racers and enthusiasts and is now considered a collectible classic.
The Yamaha RD350 YPVS remains a symbol of the golden era of two-stroke motorcycles, celebrated for its combination of technology, power, and style.