It looks like you're new here. If you want to get involved, click one of these buttons!
I have built a hexcopter to carry a gopro and I'm finding power consumption to be a bit high causing battery life to be too short. I have a moderate knowledge level of this stuff but wondering if someone could offer some guidance on if its possible to reduce power consumption. Below is a list of the important stuff I have used.
Props: Various brand 9X4.7 SF ( I have been experimenting with different brands but all produce about the same results)
AUW: 2.1kg running a 3S 5800 lipo.
Drone flies beautifully, power is just right but I'm not sure if I could lower current draw. Motors/speed controls don't get warm at all. I have tried 10X4.7SF props but power consumption goes up to around 21A and things start to get warm. 10inch is the frame's limit so can't go bigger.
Sitting on the bench with drone armed, all accessories powered up (Gimbal, Gopro, lights, GPS locked on, OSD on, video TX powered up, e.t.c) I am getting around .5a draw which I'm ok with (props not spinning), if I pick up the drone and move it around forcing the gimbal to work harder this will go up slightly but not by enough to worry about (<10% increase). In a stable, altitude hold hover out of ground effect (>2m high) and no wind the drone is drawing around 19A according to the power module and OSD (I suspect the actual current draw is higher and the power module is incorrect as I'm only getting around 10 mins flight time). I'm going to test this with a proper power meter and compare with the power module.
Question is, is this the best I'm going to get with this sort of weight (don't really have an option to reduce weight as everything on the drone I'm happy with and want to keep as is). Or with different motor/prop combination will I be able to reduce current draw. I'm a bit reluctant to try different motors unless I know they are going to be an imporvement as they are not cheap, esp when I'm buying 6 of them. I'm thinking of trying 8inch SF props to see what that gives me but Ihave a feeling the power of the drone will suffer. I'm hoping someone with a more thorough knowledge of motor/prop combinations might be able to chime in with some advice.