Update: I've mounted the front motors upside-down to get the props out of the gopro FOV
Update: I've replaced the diversity receiver with a micro v2 and made a TPU tail to hold the antennas in a better position

last relevant videos:

last test: 20min with Hero7 onboard on 6s1p 4000mAh (Samsung 40T 21600)
first test: 27min on a 6s1p Lion pack (Sony VTC6) -

car chasing with LiIon (read video description):

reelsteadygo test done on this frame:

big motor issue: contact surface with the propeler is flat and has no friction which combined with the fact that the nuts are low profile is the perfect formula for props coming off (untightening) mid flight. this is unacceptable for such a large motor which can spin 7inch props. V2 solved the issue.

frame issues you should know about:

• 15mm standoffs are joke, had to replace them with 25mm ones.
• captive nuts are not preinstalled as they should