User Manual

* Factory Setting

F Tail – torque precompensation (RevoMIX)

The advantage of always knowing the pitch and cyclic load on the flybarless system, allows the

MICRO BEAST to pre-compensate for the torque variations on the tail before any noticeable deviation.

This method of torque pre compensation (RevoMIX) relieves the tail control loop and improves the tail

performance especially when using MICROBEAST on helicopters with insucient tail authority and/or

extreme motor torque (well powered electric helicopters).

Status-LED torque precompensation

purple o *

red ashing low - normal direction

red high - normal direction

blue ashing low - reverse direction

blue high - reverse direction

o user dened

To see the compensation direction, you can move the collective pitch, roll and elevator control stick at

any time. With active feedforward the tail rotor has to produce a deection which is must counteract the

rotor torque. Since at 0 ° pitch the least torque is applied by the main rotor, also tail rotor makes the least

deection as no additional deection is added. If you pitch in positive or negative direction or move aile-

ron or elevator control, a deection will be added to the tail rotor which must always act against the

torque of the main rotor. For helicopters with clockwise rotating main rotor, the precompensation has to

steer the tail always to the left (nose of the heli to the right).

The deection will be held always in the same direction, whether positive or negative pitch, as the torque

only increases. At 0 ° pitch and no cyclic control input the torque is at its lowest. Once a control input is

given the tail slider / the tail rotor will move slightly (!) in a given direction. Cylce through the various op-

tions and nd the direction (the color of Status-LED) that matches your model. You then have four options

to set the precompensation (o, low, high or by computer).

Note: The height of the deection depends on the setting of collective pitch angles in Setup menu K.

Therefore the deection may vary depending on the direction of pitch.

The choice is made by moving the tail

stick into one direction until the

Status-LED lights in the desired color.

The option “user dened” allows you

to dene your own setting with the

PC software.

Push the button to save the conguration and to proceed to parameter menu point G.