The plane flies, fully loaded even. But! It couldn't climb very high and all the camera recordings were suffering from vibrations coming from the motor.
So, the solution is simple, replace the motor. Implementation, not so much but not on the account of having to turn screws.
Unfortunately the desired one, O.S. 3820-1200 didn't come trough in time, so we got the second best thing, KONTRONIK KORA 15-10.
Cue the montage sequence:
Just add a few more holes since the spacing on this motor a slightly bigger and drill the hole in the center of the prop from 5mm to 10mm because someone goofed up and got the wrong prop mount. But it all balanced out perfectly in the end.
New motor and better regulator. Some day maybe a bigger battery and then a larger plane with newer motor, and so on, but for now this is it.
Few quick tests with a piece of string and a scale, determined the motor with 11x5.5 prop gives out 1.6 Kg of thrust at full throttle. With more aggressive timing setting on the regulator it gave out 1.7 Kg of thrust, but the output was not linear with the throttle.
For comparison, the old motor gave 0.98 Kg of thrust at full throttle.
And another test on the battery capacity gave us: 3 minutes at full throttle and 9 minutes at at half throttle on the new motor. Compared to the 6 minutes at full throttle and 11 minutes at half throttle on the old one.
Time to test in in the air to see if the trouble was worth it.
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