My long range quad on Armattan Badger 6" frame.
Didn't yet tested the maximum flight duration on this frame. But on the same setup on another frame the flight duration till the drop was 15km in 20min.
Update 2020-05-14: Rebuilded this quad with new parts. Check it out https://rotorbuilds.com/build/23196
Photos
How many MAh is that 6S 18650 pack you made?
How did it fly with the relatively low C LiIon?
VTC6 cells are 3000mAh and they gives 15A continuous and 30A peak current. So cruising with some mild agility is possible.
Glad to hear it! Perfect for long range.