Despite the correct gear ratio and motor pole count, the Spirit GT shows around 400 rpm too much with a Heli-Jive 120+ HV. In EdgeTX with FrSky F. BUS, around 2200 RPM is displayed. However, the Heli-Tach app determined around 1800 rpm, and you could also hear that the actual speed was significantly lower than what the telemetry showed. The gear ratio of the heli is 9.23 and the divider for the motor is set to five with an Align 750mx with 10 poles.