Iām trying to build a Dual Tailsitter. All the equipment is here (Taranis, pixracer etc.) Things donāt seem to go too well so far. I have for example following questions:
Should the GPS be oriented in drone mode or in horizontal flight mode? (the pixracer is oriented in drone mode)
How to adjust servo centre position, trims and ways individually?
What flight mode is best for take off?
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The 1st goal would be to have a stable hover flight and 2nd the transition. If somebody is willing to help getting it in the air via PM I would happily pay some money. I donāt want to bother you here with too many questions. Iāve seen other people to get it in the air so it must be possible : )
With a newer GPS (eg ublox m8n) I find you can often get away with mounting it for forward flight, but this depends on your usage a little bit. Typically you intend to transition to fixed wing flight as soon as possible, and stay there for the majority of the time.
For servo position I generally try to get it as close as possible mechanically first. After that you can adjust the trim per PWM or control axis if needed.
Best flight mode for takeoff? Depends what youāre trying to do, but bring it up slowly. Treat it like a multicopter in manual/stabilized mode first, do some tuning, then try altitude control mode, then position control mode.
It worked! After carefully calibrating it hovered in āstabilizedā VTOL-mode. Today even āPosition-holdā and āLandā worked! : ) As GPS I have a random Chinese Ublox m8n (gets ~14 satellites). Though I have to rearrange the motor cables and stuff, they are probably distorting the magnetometer.
Where can I trim the PWM_MAIN_5 & 6? I canāt find it in Dual Tailsitter. I saw it in the documentation that it is available for other chassis but not here. Only PWM_AUX_5 and 6.
I find it very hard in āstabilizedā to descend the plane. How can I tune it? First I used 3 blade 104.5 propellers, but I found that 2 blade 105 propellers would have faster airflow and thus give better control over the rudders in descent.
