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HeliWizard Calculator

HeliWizard Rotor/Engine RPM Calculator
This calculator will allow you to determine accurate head speed, motor rpm, tail rotor rpm and gear ratios for your heli.
Data InputResults
If you do not understand any particular term, just slide your mouse over it for a definition
Main Gear Teeth
Main Pinion Gear
Tail Rotor Pinion
Engine RPM

(Check RPM's on popular motors)

Main Gear Ratio
: 1
Main Rotor RPM
Tail Rotor Gear Ratio
: 1
Tail Rotor RPM
Getting your heli's rotor speed right is key to a well performing helicopter. On a scale ship, one generally wants a lower rotor RPM (for appearance and performance). On 3D helis, a higher rotor speed is needed. Across the board, higher main rotor RPM is needed at higher altitudes.


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