Tinkering is worth it!

After initial difficulties, to accomplish a flight of paper model with no engine satisfactorily, flying the beginner model with motor already at the end of the first practice session outside a proper range and leaves you wanting more! Precise folding and patience when modifying is necessary, but persistence will be rewarded. And the passers staunen- only an exceptional paper airplane flight (because they know no motor) and then about what it is all ...