Calculate the optimal governed headspeed of your helicopter based on your gear ratio and power system, or determine the necessary gear ratio (and recommended pinion if you enter the main gear tooth count) to achieve a desired headspeed.
Results
Calculations are first-order estimates using reasonable voltage and efficiency assumptions.
Airframe, blades, batteries, conditions, and flying style are not explicitly modeled.
Use this tool for planning and comparison. Actual performance may vary.