I’m curious. Outside of all up weight and wing efficiency, what would have the largest effect on efficiency (flight time)?
I have a new V2.5 setup with a 4.8kwh battery, Kangook Amaruk frame, 3 blade prop.
The best I’ve managed is 45 minute flight time before a critical SOC and VTot warning starts flashing and I take it in to land. Cruise flight at 500’ AGL.
Outside of hitting the gym and losing weight, or getting a new wing, is there much I can do to effect overall efficiency? Does hang angle have much effect?
My current set up
132kg all up weight (84kg body weight)
static hang 11 degree angle.
Dudek Universal 1.1 28m (140kg max, not sure how the Uni stacks up in terms of efficient wings…)
Thanks for sharing your data and flight stats this gives me a good idea of how the electric ppg performs. I think having a bigger wing with lighter wing loading and trimmers in would reduce rpms required to maintain cruise speed. Wich translates to extended battery range, also only using the high end of the motor power for takeoff and then reducing the motor speed and set cruise control motor speed after that just to maintain altitude.
I wouldn’t expect the frame to make a significant difference. It probably does create a bit more drag then the stock SP140, but overall, the wing seems to have by far the greatest impact on efficiency. Since you and I are about the same weight, it should be a fairly direct comparison, with the main variables being the frame and the wing. For reference, I typically get about 70 to 80 minutes of flight time on my Viper 6.
There’s also an upcoming OpenPPG app that will allow data to sync with our equipment. This will make it possible to compare wing efficiency across different users. So, if people are curious about which wings or frames are most efficient or how factors like temperature affect flight time or cruise power the app will provide clear insights. It will log efficiency data along with a range of other useful metrics. I’ll be sharing more on the app here in the coming weeks. And if anybody wants to be part of the beta user group, just DM me and I’ll get you on the list.
I haven’t been able to try out other wings yet but my average hourly consumption was 3.28kWh across my first 53 flights. On a given flight, it’s anywhere from 2.72kWh to 4.25 kWh.
I fly a V1 Sp140 with the V2.5 4.8kWh battery under a 22.6m Mojo6 with the 2-blade 140cm e-prop, and an all up weight of 105kg which is 5kg over the wing’s rating.
I fly really slowly which i think plays a huge factor in how efficient I am.
