Promoting the safe enjoyment of aviation for pilots, aircraft builders and enthusiasts.
While flying at 5000 feet, the author experienced engine roughness and sputtering, prompting an emergency descent. After investigating potential causes, he discovered severe lead fouling in the spark plugs, attributed to changes in flying habits and the use of 100 low-lead fuel. He replaced the plugs, cleaned others, and improved engine performance by flying at higher RPMs.
In the event of a partial power loss during flight, immediate actions include reverting recent changes and following a mental engine failure checklist. Maintain altitude and glide speed while assessing landing options, plan for an emergency landing, and ensure situational awareness. Practice power-off landings to enhance preparedness.
Carburetor ice can form even at higher ambient temperatures, potentially as warm as 100°F (38°C), due to significant temperature drops in the carburetor throat. However, it is most common when temperatures are under 70°F (21°C) and humidity exceeds 80%. Regular checks of carburetor heat are crucial for engine operation.
The author recounts a series of test flights in their aircraft, the Cavalier, highlighting persistent engine roughness. Initial diagnostics ruled out common issues like carb ice. After thorough troubleshooting and repairs, including a malfunctioning manifold pressure sensor and a problematic left mag, the engine's performance improved significantly, emphasizing the importance of attentive maintenance.
The article discusses the importance of choosing the right propeller for different aircraft engines, specifically focusing on the Rotax engine. It highlights the impact of using the wrong propeller, the significance of RPM in achieving maximum thrust, and the preference for fewer blades for efficiency. It also touches on the potential of adjustable pitch propellers for improved fuel economy and the factors to consider when selecting a propeller. The writer emphasizes the role of compromises in determining the most suitable propeller for specific aircraft models and encourages investment for enhanced performance.
This post provides essential information about the Bing carb used on Rotax Engines. It explains the importance of the right air/fuel mixture at different throttle settings, and offers guidelines for adjusting the pilot, mid-range, and main jet systems. It also addresses common issues like hesitation and provides troubleshooting tips.
Calgary Recreational Flying Club YYC 