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Borrowed from the Dundee Model Aircraft Club
For a change a nice simple and straight-forward maeuver! And it looks impressive!
Start off as if you're going to execute a standard circuit with the model directly in front of you. Obviously the model will be slightly banked over to do this.
When you have completed a quarter circuit, roll the model 180° - personally I find it easier to roll inwards as shown - so that the model is now (roughly) inverted and continue the circuit using down elevator.
At the halfway point, again roll the model 180° and continue the circuit using up elevator - as if nothing has happened!
At the three-quarter point, roll the model 180° so that the model is roughly inverted and continue the circuit inverted using down elevator. This is generally the trickiest part as the model is coming towards you inverted - scary for most people! There is also the Döppler effect to consider. This makes the engine revs appear to increase as the model comes towards you, making you think it's descending. It's easy sitting in front of a PC thinking "Yeah, Right!" - it's still scary!
Continue with the circuit and roll wings level as the model crosses in front of you to complete this maneuver.
You can alternate the roll direction at the halfway point, just to change things a little.
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