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APM/Pixhawk is all I will use myself. The NAZA is something you will grow out of fairly quickly, while the Pixhawk is something to grow into. ;) Pixhawk setup is a lot easier these days with a wizard to walk you though it. It usually flies great on the stock settings, and if not it has...

What about rotary engines like the wankle?

Mine is 80 watts per channel. (320 watts total) I charge four 6s batts 5 amp each at a time with no problems at all. it will run all day with that load. It takes about 40 mins to charge all 4 iirc Cooter mine has a built-in power supply so no need for external power unit.. Simply plug it into...

I have one of these under a different brand name. Built in 120/220 power supply and up to 4 batts at once. VERY good units. Will run off DC as well. Large and sturdy.. about the size of a small laptop but thicker.

Have you tried it on stock PIDs? I almost always fly APM Pix straight out of the box with no adjustments other than the ALT Hold which usually ends up around 1.6 or 1.7 Vertical oscillations can be barometer issues. Make sure you have it covered with black foam or black construction paper. The...

Generally for longer flight times you want to run large props (18 to 24" or more) and large diameter slow turning motors on a quad. The trade off then becomes a more "floaty" machine. 30 mins is probably near the upper limit right now. But others know more about this than I do.

This is significant. Search And Rescue, military and civil surveillance, agriculture.. the list goes on. Can't wait to hear more!