Change eletric moter comtrolers to servos

I am building a gas quadcopter I have a dji flight controler but it works with electric moters I need to change to servos to run gas engins

Hi,

The electric motors of quad copters are usually brushless motors, they connect to a controller via an ESC (electronic Speed Controller).
The ESC has the same 3 pin interface as Servo motor do and they actually interface the same in the code.

Good Luck!