Translations:Manuals:MBUltraFblV5:Quicktrim/5/en

Rudder servo

If the tail gyro is operated in Normal-Rate mode, the rudder servo must often be trimmed precisely so that the tail rotor produces just enough thrust to counteract the rotor torque in hovering flight. Otherwise the helicopter would constantly drift into one or another direction on its vertical axis as the gyro only dampens sudden movements but does not control the tail rotor‘s absolute position.

To trim the rudder servo proceed as follows: Make sure your tail gyro is set to Normal-rate mode! By tapping the rudder stick briefly in the desired direction, you can trim the rudder servo now. If you want to trim the rudder any further repeat tapping the stick several times or simply hold the control stick pushed for a longer time to automatically perform several trim steps. The color of the Status-LED gives you an approximate indication of how much you did trim and when the trim has changed the Status LED will flash for a moment.