Hi Gents.

 

I have DiyDrones Hexacopter with 850kv motors.

http://store.diydrones.com/ArduCopter_Hexa_3DR_Ready_to_Fly_from_Ud...

 

Currently running with 3s 5000mAh & 10x4.5 plastic prop.

Hovering at 50% Joystick.

Max flight time is 8 min with 8m/s horizontal speed.

Payload without batt = 400g

50m above sea level.

What should i do to achieve 20min + flight time in 8 m/s horizontal speed.

 

2x 4cell 6000mah?

Carbon prop?

Carbon frame?

Better motors?

 

 

Regards

Ludvig

 

 

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I recently had a 3DR Quad with the 880kv motors and APC props fly 24 minutes without any special preparations.  All I did was mount 2 4S5000mAH 20C Turnigy batteries to it, wired in parallel obviously.  It was pretty easy, and if flew fairly well.

The Hex should be capable of similar.  Though with a 400g payload, that will certainly make it that much more difficult.  I think you should be able to get to 15 minutes without too much trouble.

If price is not a problem the DJI 800S is about $3000. RC Timer you show above looks like a knock off. Not sure if the RC Timer is as good as the DJI. And there is the issue of support. For long flights the only option is plane.

I do as well, 20 minutes is a cake walk with the right configuration. My Hexa gets over 35 minutes. Again as bill said, anything is possible with proper setup. But on that note, as a certain weight it goes down hill and fast, I have a huge Octo that suffer the weight problem which gets compounded further when I try to through more  battery/mah at it. I think the most important aspect I have found is to get a frame with motors and props that is super light, then have the bulk of the weight come from the batteries - this has yielded the longest flight times for me on my hexas and octos. Of course off the shelf frame have limited me, so I have had to go DIY to get the best results.

Way to go Dave. Nice video.

2X $300 batteries....

I got 4 of those:( they 5c only, I cant fly my hexa with them, alarm goes off straight away. But flight ok in stabalize mode(if you fly very smooth) get about 16-20 min with nex5 11x4.7

I have 1000kv motors with 10x4.5 blades and get 17min time on 3s 5000maH battery.

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