fits model: 650, Twin.

( Brand: Hirth ), ( Part Type: Engine )
The F20BA KG Motoren Hirth Type Twin Engine 650 is a remarkable aviation powerplant characterized by its superior performance, reliability, and versatility. This horizontally opposed two-cylinder engine is a popular choice for light aircraft, and its design delivers an exceptional flying experience.
Engine Overview
The F20BA engine is an air-cooled, mechanically fuel-injected powerplant with a displacement of 650 cubic centimeters. It boasts a unique Hirth engine architecture, which features a twin-magneto ignition system and a complex intercooling system for optimized airflow. Its total weight is approximately 155 kg (342 lbs), including the engine, accessories, and fuel system.
Power and Performance
The F20BA engine offers impressive power output, generating approximately 100 horsepower at 5700 rpm. Its maximum takeoff power exceeds 110 horsepower, delivering strong acceleration and climb performance for light aircraft. Moreover, its Continuous Power Output (CPO) is also notable, reaching around 88 horsepower at 4750 rpm, ensuring stable and consistent cruising power.
Fuel Efficiency and EASA Certification
This twin engine is designed for efficient fuel consumption, utilizing an electronically controlled fuel injection system. It is EASA certified, which speaks to its popularity among aircraft manufacturers and owners. The engine's compliance with modern aviation regulations ensures the highest standards of safety and reliability.
Additional Features
Some additional impressive features of the Hirth F20BA engine include its advanced cooling system, which efficiently extracts heat from the engine, enhancing both performance and durability. Its robust design also incorporates multiple redundancies to reduce the chance of unscheduled maintenance and downtime.
The F20BA engine's modular construction and ease of maintenance make it a popular choice for aviation applications. It offers excellent torque characteristics and superb engine response, providing a thrilling, responsive flying experience.
In conclusion, the F20BA KG Motoren Hirth Type Twin Engine 650 is an exceptional powerplant, offering impressive power output, efficient fuel consumption, and a unique, reliable design. It's the ideal choice for light aircraft seeking versatile, high-performance engines, among which are utility, training, sport, and agricultural aircraft.
a. Power and Performance: These engines are known for their excellent power-to-weight ratio, producing around 150 hp per engine, which results in impressive performance for ultralight and light sport aircraft. This powerful output makes the F20BA an attractive choice for those looking for efficient and agile aircraft.
b. Reliability: Hirth engines have a reputation for long-lasting performance. The F20BA has a large number of users who have reported no issues after several hours of operation. Additionally, these engines have a simpler design with fewer components, making maintenance more manageable.
c. Fuel Efficiency: The engines consume around 3.8 liters of fuel per hour, which is reasonably efficient for this level of power. Fuel consumption can be further optimized through proper maintenance and tuning.
d. Lightweight: The F20BA is a lightweight engine, which makes it an ideal fit for ultralight and light sport aircraft. This engine's low weight contributes to better fuel efficiency and reduced overall aircraft weight.
e. Easy to Maintain and Repair: Given their robust design and straightforward construction, F20BA engines are easy to work on. They offer easy access to components, making maintenance and repairs a more manageable task.
2. Cons:a. Higher Costs: F20BA engines come with a higher price point compared to other engines on the market. New engines can cost between $8,000 to $14,000 per pair, while used engines may be found at slightly lower prices. Additionally, the consumables, such as spark plugs, can be expensive.
b. Noise Levels: The F20BA engine generates more noise compared to other engines, which might not be ideal for those seeking serene flying experiences. However, these engine models are typically used in ultralight and light sport aircraft, which are not designed for exceptionally quiet cabin environments.
c. Carbureted: The F20BA is a carbureted engine, meaning it does not utilize an electronic fuel injection system. This older technology may present slightly more challenging starting conditions in colder climates and varying altitudes, which some pilots might find frustrating.
d. Limited Availability of Spare Parts and Accessories: While the engines are well-regarded, their popularity is not as extensive, meaning some spare parts and accessories might be challenging to find. This scarcity can result in a longer waiting time for necessary repairs or upgrades.
e. Complex Installation Process: As with most engine installations in aircraft, mounting and integrating the F20BA engine can be a complex process that requires specialized knowledge and skill. An incorrect installation could lead to operating inefficiencies, safety issues, or both.
Conclusion:The F20BA Hirth Type Twin Engine 650 offers advantages such as power, reliability, fuel efficiency, lightweight construction, and ease of maintenance. However, it comes with somewhat higher costs, noisier operation, carburetion, limited availability of spare parts, and a complex installation process. The decision to purchase this engine ultimately depends on the aircraft builder or owner's priorities, budget, and level of experience. If the added power, dependability, and ease of maintenance are critical factors, the F20BA engine might be worth considering. Conversely, if lower costs, simplicity, and less noise are top priorities, other engine options may be more suitable.
Please look at the pictures, and ask any questions before buying.
It weighs 85 pounds and would be around 100 lbs boxed up, if need to be shipped.