Miscellaneous thought these days

Because of active specific seasonal rainy front, it would rain heavily today and tomorrow, so, not suitable for Model airplane flight, most of my free time would be spent for building the next fighters, Sukhoi Su-31 and Astral XX by Mr.Naruke those are well prepared almost ready to fly. Both of them would be burdened YS 2 cycle motor, YS 60SR and YS 45 promptly.

In order to establish the straight rolling axis in any phase like a tight string, inverted, 90 degree rising up and down, 45 degree up and down etc., rolling axis and gravity center should be the same, otherwise, the axis would be bent and turned screw if there might some degree of magnitude, resulting barrel rolling. From the standing point of the theory, trainer model with not a little Dihedral is not a most unlikely subject for F3A maneuver flight. Rookie 20 as a datum sampling object is used as a trial experimental purpose, aileron differential setting, also elevator differential(mechanical construction by offset of elevator horns), Knife-Edge flight with rudder to aileron and to elevator, mechanical motor side thrust setting, etc.

As I would often bring only trainer airplane like Rookie with unstable motor condition to the new flying place as a new comer, I should be taken and be regarded as an only layman and quite a beginner, it's convenient for me to be done so rather than a skillful expert F3A competition flyer. But, someone might have been realized my capability, because I started the another one's OS 33GT gasoline motor that could not be obtained the first combustion, immediately after my throttle action, while starting phase, after taking more than 15 minutes for ignition, my piled experiences in this field for more than a half of a century made it possible?