mjmurray68
Member
Greetings,
Humbling as it is to admit, I had my first, and rather spectacular crash just 1 hour ago, and was hoping that I could enlist some gurus to help me with the post mortem. As I watched it happen there was no obvious cause that I could readily see. Sifting through the wreckage, everything that was still whole looked pretty normal. I'm willing to concede being a complete neophyte, and I really just want to root out the cause of the crash so I don't repeat it again. My concern is that everything appeared completely normal before the carnage, and all I was doing was descending.
There was an awesome moon this evening, so in early twilight, I decided to try and capture some images. Basically I had two flights, one with the gopro set to capture stills every 2 seconds, and the second with video running. Both flights were exactly the same, well aside from the obvious. I was flying in GPS/Attitude mode for both.
1. I waited for GPS lock.
2. I turned on the Gopro
3. I rose straight into the air. Approximately 90m on the first flight and 125m the second.
4. I rotated in place at peak altitude
5. I descended.
Both flights were less than two minutes duration. My battery pack was fully charged. (after the crash, having secured my lipo in a burn proof location, I checked the battery and it showed approximately 15.6v charge).
I was standing just below and fortunately to the side of the copter when things went sideways. Funny I can still see it very clearly in my mind. At about 18m (per Blackbox), the following happened:
1. The two rear motors appeared to give out, and the copter pitched nose up to about 45/50 degrees.
2. In this attitude the copter free fell about 3 meters or so, and then all the motors revved hard.
3. I applied more throttle, not maximum, but I'd say at least 50%. I did not touch my right hand controls at all.
4. The copter pitched about 45 degrees forward, motors screaming, but could not recover, it fell straight out of the sky.
There was no rotation, spinning or cartwheeling, it just plummeted straight nose down into the ground, only about 2 meters from the initial take off/GPS lock.
Here is the Black Box <Note I'm removing the BB Link, if you'd like to see it please PM me>, and I'm attaching the Flight Report as well. Unfortunately the last entry in black box was just before happened, not much good that, and I'm very curious why that would be, or if that perhaps is indicative of something in and of itself.
Additional info: Radio: Tx: Futaba 8FG Super/Rx: 6208SB
I send out my thanks in advance to anyone who can help me figure this one out. Please let me know if there is any additional information I can provide.
I've also removed the flight report as well.
Humbling as it is to admit, I had my first, and rather spectacular crash just 1 hour ago, and was hoping that I could enlist some gurus to help me with the post mortem. As I watched it happen there was no obvious cause that I could readily see. Sifting through the wreckage, everything that was still whole looked pretty normal. I'm willing to concede being a complete neophyte, and I really just want to root out the cause of the crash so I don't repeat it again. My concern is that everything appeared completely normal before the carnage, and all I was doing was descending.
There was an awesome moon this evening, so in early twilight, I decided to try and capture some images. Basically I had two flights, one with the gopro set to capture stills every 2 seconds, and the second with video running. Both flights were exactly the same, well aside from the obvious. I was flying in GPS/Attitude mode for both.
1. I waited for GPS lock.
2. I turned on the Gopro
3. I rose straight into the air. Approximately 90m on the first flight and 125m the second.
4. I rotated in place at peak altitude
5. I descended.
Both flights were less than two minutes duration. My battery pack was fully charged. (after the crash, having secured my lipo in a burn proof location, I checked the battery and it showed approximately 15.6v charge).
I was standing just below and fortunately to the side of the copter when things went sideways. Funny I can still see it very clearly in my mind. At about 18m (per Blackbox), the following happened:
1. The two rear motors appeared to give out, and the copter pitched nose up to about 45/50 degrees.
2. In this attitude the copter free fell about 3 meters or so, and then all the motors revved hard.
3. I applied more throttle, not maximum, but I'd say at least 50%. I did not touch my right hand controls at all.
4. The copter pitched about 45 degrees forward, motors screaming, but could not recover, it fell straight out of the sky.
There was no rotation, spinning or cartwheeling, it just plummeted straight nose down into the ground, only about 2 meters from the initial take off/GPS lock.
Here is the Black Box <Note I'm removing the BB Link, if you'd like to see it please PM me>, and I'm attaching the Flight Report as well. Unfortunately the last entry in black box was just before happened, not much good that, and I'm very curious why that would be, or if that perhaps is indicative of something in and of itself.
Additional info: Radio: Tx: Futaba 8FG Super/Rx: 6208SB
I send out my thanks in advance to anyone who can help me figure this one out. Please let me know if there is any additional information I can provide.
I've also removed the flight report as well.
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