Ah.. Ok. That makes perfect sense. Now, all I have to do is give it a try. And, as I said, I can see why K=5!!

For anyone that is reading this, please understand that these type maneuvers do require that your plane is in absolute perfect trim and the center of gravity (CG) is set perfectly. Setting the trim is more than simply adjusting the trim control on the TX. It involves multiple flights and careful observation of behavior of the aircraft during extended maneuvers, such as inverted (does the nose drop or push up) or in verticals (does the nose go right or left without input from the transmitter after the first basic pull to vertical).

There is a web site, and I will try to find it, that describes the step by step process of making the mechanical trim perfect for each individual plane. Don't forget, though, "you can't make a silk purse out of a sow's ear". You have to build them straight before they will fly straight.

Anyway.. as I was saying...

It must fly straight (the very first basic maneuver after take-off) and make absolutely straight vertical climbs. This requires both a perfectly trimmed plane (as already said) AND real precice control on the sticks. For instance, if going vertical, pulling straight back on the elevator control stick, so that there is NO roll influence on the climb, is absolute. This requires practice AND focus without distractions. It does not come naturally. Well, for Queque, it may seem as though it does..

CGr.