Hello everybody,
The first of the two Himax CR3516-1030 systems has been flight tested by one of my colleagues in Poland without me being present. The system used two Spin66 ESC, one Igor's active timer and 3S 4000 mAh battery. 12x6 carbon composite two blade propellers were used. The RTF weight of the model was 2025 grams (71.5 oz.), wings span = 60" and the wings surface area with flaps = 690 in^2. The lines length = 64', eye-to-eye.
The tests were done in a hurry, without bothering to check the ground current and, unfortunately, one of the motors was burned in flight. The motors were mailed to the guy who specializes in rewinding and rewinded with thinner copper wire to get the Kv=500. I saw three flights using these motors and 6S 2700 mAh. Zippy battery. The ESC, timer and props were the same. This time the tests were successful and the quality of the pattern maneuvers - exceptional. Judging from the battery use after landing, the average in-flight current in each motor, with the ESC connected PARALLEL was no more than 13 Amps. The total average in-flight power was, therefore, about 625 Watts (2x13Ax24V). This calculation assumes the average voltage of the 6S battery to be 24 Volts. 625 Watts converts to 8-9 Watts/oz. in this model. Because every contra system generates more thrust in the direction of flight than a single prop systems, the plane, weighting 71.5 oz., flew easily every maneuver with exceptional stability.
More flight tests are planned in the next two weeks.
Regards,
M