Translations:Configuration/451/en
From Spirit System Manual
Micro helicopters and µSpirit: When Tail rotor is driven by a dedicated motor, the Rudder ESC performance can be noticeably improved by configuring Low RPM value to achieve the lowest spinning RPM for the Tail rotor. This can be configured by Subtrim (CH4) - Low RPM - the value has impact on lift off and symmetrical turning performace.
