This is just preliminary....testing eCalc results: For a Cinestar8 c/w BGC+gimbal and a Red Epic + 2 6S 6000 maH 35C batteries with a total AUW = 13600 grams Props are 15x5 CF and the motors are 22 pole 420 KV 650 watts each. Seems I am getting a max hover time around 5.4 minutes.... or if I double the batteries to 4 I get around 11 minutes. Does that sound about right?