User Manual

A MIXER TO ELIMINATE ROLL COUPLING
This mixer is used to eliminate any Proverse roll (rolling in the same direction as the rudder) coupling that may
occur when Rudder input is applied. The mixer causes the ailerons to deflect just a bit in the opposite direction
of the Rudder in order to keep the aircraft from rolling while holding Rudder for knife-edge flight. This mixer
uses the Rudder as the Master and the Ailerons as the Slave. This type of mixer is typically left ON all of the
time but may be turned ON and OFF using a switch if so desired. Note: If the model exhibits Adverse roll
coupling where it rolls in the opposite direction of rudder input, then adjust the mix directions in step 6 so that
the ailerons deflect slightly in the same direction as the rudder input.
1. Select an unused Program Mixer (PROG MIX3, 4, 5, or 6)
2. Select RUDD as the Master.
3. Select AILE as the Slave.
4. This mixer can usually be left on all of the time. However, if a Flight Mode or switch is to be
used to turn the mixer on and off, highlight and select the Flight Mode or switch at the bottom
of the display.
5. If a switch has been selected to turn the mixer on and off, move the switch back and forth while
observing the number directly to the right of the program mix name in the upper left portion of
the display. The number will change between 0 and 1 as the switch is moved back and forth.
When the number is 0, the mixer is looking at the Pos0 values (not programmed yet) and when
it is 1, the mixer is looking at the Pos1 values (also not programmed). Put the switch in the
position where you want the mixer to turn ON. Look at the number directly to the right of the
Program Mix name. If it is 0, highlight and select Pos0 on the display. If it is 1, highlight and
select Pos1 on the display.
If the mixer is to remain on all of the time, highlight and select Pos0.
6. Move the rudder stick to the right a little and set the percentage to –3%. Move the rudder stick a
little to the left and set the percentage to –3%. The negative percentages should cause the
ailerons to move in the opposite direction of the rudder. When the rudder is moved to the right
there should be just a little left aileron generated by the mixer. When moved to the left, there
should be a little right aileron generated. If the percentage is too small to move the ailerons,
increase the values (more negative). If the ailerons appear to be moving too much, decrease the
percentage (less negative). If the ailerons are for some reason moving in the wrong direction
(same direction as the rudder) then change the values to positive (+) percentages instead of
negative.
7. If a switch has been selected, verify that the mixer is turned off when the switch is moved to the
OFF position.
8. Test fly the aircraft and return to this mixer to adjust the percentages until the rudder does not
cause the aircraft to roll when rudder is applied in knife-edge flight.
9303 Program Mix Examples 5