Merry Christmas and the Best 2017 to Everybody!
I did not touch the motors yaw angle. This angle is zero degrees w/r to the fuselage longitudinal axis.
1. I have increased the surface area of the front portion of Wasp's fuselage by 4 sq.in.
2. I have removed the air brakes from both models.
3. I have added the outside wings Depron ailerons ( 3 sq.in.) that are bent down ~7 degrees.
4. I have replaced the prop.saver style mounts (with rubber o-ring) with the collet style, aluminum prop.adapters.
I did these changes in the order listed above and flight tested both models after each change flying the outside loops and vertical eights.
1. Had positive effect
2. Had strong positive effect: the turbulent wake was adversely affecting the tail surfaces. Now, both models react in the predictable manner to the smallest elevator movement on top of the outside loops
3. Had very strong positive effect. Now, the motor torque is reacted by the aerodynamic moment. I was wrong with my free body diagram and confused myself.
Comment: because the aerodynamic moment is the function of velocity, it weakens on top of the outside loops but the remaining moment is sufficient to prevent the excessive inside rolling motion of both models. The tendency to roll inside is still there when and if I almost stall the models but "normal size" outside loops look and feel fine now.
4. Very strong positive effect. The gyroscopic moment of the propellers in sharp corners that was stretching the rubber o-rings is reacted now by the motor shaft.
The buzzing sound that could be heard while executing such corners disappeared. This sound was caused by the propellers rattling on the ring of the prop.mount when the o-ring was stretching and contracting. Comment: this behavior appeared when I started flying sharp corners. Sharp corners have higher pitch angular velocity, therefore the gyroscopic moment exceeded the "holding" strength of rubber o-rings.
I have also increased the flight time of both models to 5 minutes with my 2S 800 mAh batteries used only ~60% and the no load (after landing) voltages about 3.79V per cell.
Comment: with 4.6 sec. laps on 5 meter long lines, both models are faster than typical indoor bees. The way they fly is much closer to the outside C/L stunt models and I am finding this very useful for my pattern practice.
Please go to:
https://www.youtube.com/my_videos?o=U to see my flights.
Regards,
M