The O.S. Engine FS-91 Surpass II: A Powerhouse for RC Aircraft Enthusiasts
If you're an RC airplane enthusiast looking for a reliable engine that offers exceptional performance and durability, the O.S. Engine FS-91 Surpass II with Pump is a standout choice. This engine is designed to deliver consistent power and reliability, making it a favorite among hobbyists who demand the best from their aircraft engines.
Enhanced Performance with Pump Technology
One of the key features that sets the FS-91 Surpass II apart is its innovative pump system. Typically found in larger 1.20 class engines, this regulating style pump significantly boosts the engine's responsiveness and reliability. Whether you're performing aerobatic maneuvers or flying scale models, you'll appreciate the smooth, consistent power delivery this engine provides.
Built to Last with Corrosion-Resistant Components
The FS-91 Surpass II is engineered with longevity in mind. It features a rear ball bearing that is rubber-sealed on both sides and internally greased to prevent corrosion. Additionally, critical components like the crankshaft, camshaft, and piston ring are plated to further resist wear and tear, ensuring your engine remains in top condition even after extensive use.
Versatile Design for Customization
This engine also boasts a reversible carburetor, allowing the needle valve to be positioned on either side of the engine, providing flexibility in installation and tuning. The black anodized rocker cover not only adds a sleek look but also contributes to the engine's overall durability.
Quiet Operation with Large-Volume Muffler
For those who value a quieter flying experience, the FS-91 Surpass II comes equipped with a large-volume muffler. This feature effectively reduces noise levels, making your flights more enjoyable without compromising performance.
Specifications
- Displacement: 0.912 cu in (14.95 cc)
- Bore: 1.091 in (27.7 mm)
- Stroke: 0.976 in (24.8 mm)
- Practical RPM Range: 2,000-12,000
- Output: 1.6 hp @ 11,000 rpm
- Weight with Muffler & Manifold: 23.9 oz (678 g)
- Weight without Muffler & Manifold: 22.2 oz (630 g)
- Recommended Props: Stunt: 11x10, 11x11, 12x9.5, 12x10, 12x11; Scale: 13.5x8, 14x7, 15x6, 16x6, 12x8 3-blade, 12.5x7 3-blade
The O.S. Engine FS-91 Surpass II with Pump is perfect for advanced RC flyers seeking a powerful and durable engine. Its unique features make it ideal for both stunt and scale flying, offering flexibility and reliability that seasoned hobbyists will appreciate.
