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Borrowed from the Dundee Model Aircraft Club
Once you have mastered the Knife Edge and Inverted Flight , you can use these maneuvers for a four point roll.
The Four Point Roll is an Axial Roll but the maneuver is interupted at each quarter roll point.
Enter the maneuver with plenty of speed and power and quarter roll into knife edge. If you roll to the right then input left rudder to hold the nose up. Try and keep the knife edge straight and at constant height. Hold this position for a moment then continue the roll to the inverted position with another quarter roll and hold in down elevator to maintain height. Again after a moment, execute a third quarter roll to go into knife edge and hold. Note that this time, the direction of rudder input is the same as the rolling direction ie. if you are rolling to the right, then input right rudder. This makes sense because, for example, three quarter left rolls equals one quarter right roll. Finally, quarter roll to upright.
Aresti Diagram
The co-ordination required for this maneuver is fairly tricky to learn and requires a fair amount of patience (and a lot of height!).
Briefly, the control inputs required for a clockwise and anti-clockwise Four Point Roll are:
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Clockwise (illustrated):
Start
Right Aileron - quarter roll
Left Rudder - hold
Right Aileron - quarter roll
Down Elevator - hold
Right Aileron - quarter roll
Right Rudder - hold
Right Aileron - quarter roll
Finish
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Counter-Clockwise:
Start
Left Aileron - quarter roll
Right Rudder - hold
Left Aileron - quarter roll
Down Elevator - hold
Left Aileron - quarter roll
Left Rudder - hold
Left Aileron - quarter roll
Finish
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