A while ago with my P1, I wanted to test how different props affect the flight time:
I just want to see the differences of the flight time using different props. I chose: Phantom stock; Graupner e prop 8x5; GWS 3 blade HD-9050x3; Master Airscrew TB2318 (cut tip); APC 10x3.8 (cut tip). I tried to keep the other factors the same so I used the Phantom stock 2200 mAh pack charged until the light was solid green (Phantom charger) and let the pack sit to stabilize the voltage surge about 30 minutes or so. I let the pack cool down after each test before another charging. The pack was used earlier about 5 cycles. The room temperature was about 40F throughout. The flight time started when it lifted off and I hovered at eye level with ATTI mode until it landed under the fail safe condition. I also recorded the sound level at 2 meters. And here are the results:
Prop time (min:sec.) / sound (dB)
Stock 12:48 / 83
Graupner 12:40 / 84 adjust throttle a few times
GWS 13:39 / 83
MasterAS 8:33 / 84.5
APC 10x3.8 cuttip 13:54 / 84
Gemfan 9x4.7 14.06 / 86 stable, hold atti well
APC 9x4.5 oscillation!
FC 3-9x4.5 11:31 / 92 adjust throttle 2 times
FC 9x4.5 11:42 / 90 stable, hold atti well
Gemfan 9x4.7 14.22 / 86 stable, hold atti well Nano-Tech A-Spec 65-130C
Carbon 9x7 13.29 / 90 slight oscillation (reduce Pitch & roll to 80%)
Carbon 8x4.5 with Contour cam weight = 2.25lbs or 1020.583 g. 8:40 minutes.
Stock 19:45 (2x2200 mAh)
Note that the warm up time was about 2 minutes before the fast flashing yellow stopped. All hold the altitude quiet well with 2-3 throttle adjustments except the Master Airscrew which required throttle adjustment every couple minutes.