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HelicopterMain Discussion › National geographic quad goes down
11-10-2013 06:08 PM  4 years agoPost 1
wargor

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Islands

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11-10-2013 06:43 PM  4 years agoPost 2
Eco8gator

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Palm Beach, FL

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I wonder what happened...humidity, GPS signal loss, vibration...could have been anything. I hope no one pulls out the "battery got too low card"

This is why I believe the operators must fly with OSD or some sort of video display with full telemetry! It sounds like something caused the control system to go into an oscillation...you can hear it in the video.

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11-10-2013 07:49 PM  4 years agoPost 3
psylence519

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Omaha, NE - USA

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Bright side, that gimbal worked great!

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11-10-2013 08:01 PM  4 years agoPost 4
Eco8gator

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Palm Beach, FL

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Agreed...definitively a sweet gimbal.

I am curious if they were using a GPS lock mode. In that type of environment I think I would just have it in auto altitude mode with bank limiting...from there its all on the pilot.

Hopefully there is some stored telemetry so they can figure out what happened.

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11-10-2013 08:48 PM  4 years agoPost 5
Manny1776

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Melbourne, Florida. USA

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thanks for share

Fly High, Fly Fun, Fly Secure.........Fly 3D!!!! Bavarian Demon USA Team

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11-10-2013 09:03 PM  4 years agoPost 6
Shawn Behrens

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DEEP IN THE BOG

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Got to love DJI equipment.

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11-10-2013 09:50 PM  4 years agoPost 7
nitro fun

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Oc ca

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What was hanging from it? hopfully it was not gyro tape that loosened up

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11-10-2013 10:06 PM  4 years agoPost 8
GyroFreak

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Orlando Florida ...28N 81W

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Did you see the climbers on the finger rock ?
Incredible it crashed where it was recoverable. Could have been in the top of a tree where you can't see it.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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11-10-2013 10:58 PM  4 years agoPost 9
lgibjones

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Chicago, IL

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I am not familiar with that platform. For the uninitiated, does it mean anything that the light by one of the motors is red, and all others are green?

Just curious.

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11-11-2013 12:02 AM  4 years agoPost 10
Lee O'Dell

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Gibsonville, North Carolina

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A few parts USPS Priority and it will be as good as new !!

Lol!

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11-11-2013 12:34 AM  4 years agoPost 11
DougV

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Miramar, Florida - USA (Ft. Lauderdale)

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Nevermind...

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11-11-2013 12:49 AM  4 years agoPost 12
Justin Stuart (RIP)

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Plano, Texas

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What hexcopter frame were they using?

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11-11-2013 12:50 AM  4 years agoPost 13
unclejane

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santa fe, NM, USA

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I am not familiar with that platform. For the uninitiated, does it mean anything that the light by one of the motors is red, and all others are green?
Nope, that's how the lights are on the S800, 2 greens 4 reds. They're sort of build-in position lights...

I got an S800 not too long ago with the WKM + V2 IMU (I was Offered A Deal I Couldn't Refuse). When I was researching the Wookong before I bought it, there was a "Flip Of Death" problem in the Wookong firmware a while back that's since been fixed. I believe there are some other vids of S800/WKM's going bonkers in a similar manner, which I believe was also found to be this firmware bug that was later fixed.

Sounds like the Wookong went insane, just by the sound of it and the obvious bonkers behavior of the machine that you could see in the camera. A little late for a firmware update I guess...

The S800 is a magnificent machine, tho, with unreal amounts of power. And good long flight times of up to 15 minutes with a 10ah 6S batt. But this looked like the flight controller gave up the ghost.

Fingers crossed on mine!

LS

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11-11-2013 12:55 AM  4 years agoPost 14
unclejane

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santa fe, NM, USA

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I wonder what happened...humidity, GPS signal loss, vibration...could have been anything. I hope no one pulls out the "battery got too low card"
True about vibration. The S800 like I said is a big aircraft with enormous amounts of power; even after I balanced the props on mine, it's still quite a buzzer. I mean you got _6_ 15" props screaming away on that thing.... The vibration isolation kit for the S800 EVO is pretty much a requirement, IMO. And if you use the Wookong, you want the V2 IMU with the better vibration resistance.

LS

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11-11-2013 05:15 AM  4 years agoPost 15
Justin Stuart (RIP)

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Plano, Texas

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So this is what they were flying?

http://www.rc-drones.com/DJI-Spread...WooKong-kit.php

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11-11-2013 10:37 AM  4 years agoPost 16
unclejane

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santa fe, NM, USA

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Yep, that's the one. And the gimbal was probably DJIs Zenmuse, perhaps. The gimbal alone costs again almost as much as the aircraft.

No, I didn't get mine for anywhere near 3large lol... Partly because DJI is hawking the EVO now and the S800 is "new old stock":

http://www.rc-drones.com/dji-S800-evo-airframe.php

When you add a controller and gimbal and accessories, you can get up to close to 10 large pretty quick. So, you don't want the thing flipping over and such lol....

But except for that, not everything that comes from China is bad. It's a super stable aircraft, especially in wind....

LS

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11-11-2013 11:37 AM  4 years agoPost 17
esmoglo

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Florida USA

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S800 is nice but if you are serous there are way better options, plastic arms on the S800 flex under loads and are very limiting not to mention the prop wash bad since the props are so close together its also limiting in terms of what props you can use.

Ugly can be fixed stupid is forever!

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11-11-2013 12:16 PM  4 years agoPost 18
unclejane

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santa fe, NM, USA

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S800 is nice but if you are serous there are way better options, plastic arms on the S800 flex under loads and are very limiting
This is by design and it's not limiting - it's good design. There's a lot of misinformation out there about this on the S800 and, well, it's wrong lol. Anything that spins a prop on an aircraft _must_ be mounted on something that allows it to flex. If not, it's going to flex anyway and just break whatever it's mounted to. And we know what that means... This is a long long history lesson in aviation for sure. So the flexibility in the S800 arms is there for a good reason and it works well.
not to mention the prop wash bad since the props are so close together its also limiting in terms of what props you can use.
This is no better or worse than on most other multis of smaller size. The larger props are used because it's supposed to be more of a heavy-lift application. It's actually very smooth under heavy load, but does rock-n-roll when lightly loaded, kind of like any other multi for that matter.

I can't see a better prop to use on that platform than the stock DJI carbon fibres. They're light as a sheet of paper, very strong and work well. But it is true if you want to replace them, you're kind of screwed. This is even worse on the S800 EVO which has the heli-main-blade-like things on it. But there again replacing them, well, there isn't really a whole lot of need that I can see...

LS

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11-11-2013 01:01 PM  4 years agoPost 19
rpat

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Weirton, W. Va.

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The frustrating part I can relate to. I have had some unknown reason crashes this past year and a half and it stars to get old after the first couple of them.

trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2

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11-11-2013 03:17 PM  4 years agoPost 20
Justin Stuart (RIP)

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Plano, Texas

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When you add a controller and gimbal and accessories, you can get up to close to 10 large pretty quick.
Clarify "10 large" for me. Are we talking $10,000? For a fixed pitch multirotor? That can't be right.

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HelicopterMain Discussion › National geographic quad goes down
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