RC Airplane Setup Calculator

The RC Airplane Setup Calculator groups several practical airplane checks into one page. It is useful after you already know the model size or have a built aircraft and want to verify setup values before flying.

What this calculator does

The calculator includes tools for servo torque, wing loading, power loading, stall speed, prop pitch speed, and prop tip speed or noise category. These values matter because an airplane can have enough power but still be poorly matched in wing loading, servo strength, or prop speed. Enter the specific values for the section you are checking and calculate each tool independently. Example: before increasing throws on a faster model, use the servo torque tool to see whether the servo has a suitable margin. Then use the wing loading and prop speed tools to check whether the model behaves more like a trainer, sport plane, or high-performance aircraft. Use these results as setup guidance and confirm with conservative flight testing.

In practical terms: It provides several independent setup checks for RC airplanes, including servo torque, wing loading, power loading, stall speed, and prop speed.

How to use it

Open the section you need, enter the model dimensions or power values, and calculate that specific setup check.

Example calculation

Check servo torque for an aileron surface, then calculate wing loading and stall speed for the same aircraft.