Gradual spool-up (takes 1.5 to 3 seconds). Designed exclusively for helicopters to protect main gear systems from sudden torque damage. Stick-Programming Flowchart
Connect the three wires from the brushless motor to the three output wires of the ESC. If the motor spins in the wrong direction, swapping any two of these three connections is a standard troubleshooting step. brushless esc v2.3 manual