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Crash

Posted by George Pokachalov on February 17, 2013 at 12:30pm


3689503890?profile=originalYesterday I had my third fly with ardupilot on my X8 and is anded badly.

In about 3 seconds after start engine stopped and I lost control totally.

Due to small roll and pitch angle my X8  kept flying and crashed in a tree in 300 meters.

Later at home I discovered that connector on a power module on the battery side came off from the wire. Terminals inside the connector had almost no trace of solder. On the wire solder attended and was highly oxidized!!!!

3689503890?profile=original

This means that the soldering kept on heat shrink tubing, and water has entered inside accident was only a matter of time and vibration, which is what happened.

I also cut tube from another wire and soldering quality on it also leave much to be desired.

Fortunately the aircraft be restored by the end of the week I will raise it again in the air (It amazingly strong!).

However, I will now have to check all the areas of factory soldering.

Tags: crash
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Comments

  • Michael February 19, 2013 at 1:32pm

    Never be persuaded by the cotton candy and freebies.  A commitment to excellent service is all we should want from them.

  • George Pokachalov February 19, 2013 at 1:20pm

    I don't think that 3DR will provide to us some"candy" for our broken aircrafts, although it would be nice of them

  • Michael February 19, 2013 at 12:03pm

    My guess is that 3DR is on top of this and we won't be finding bad solder joints in the future.  :)  Overall I have been pleased.

  • Jason Wise February 17, 2013 at 11:44pm

    I always re-solder using flux and unleaded solder or build my own connectors, As I slammed a few years ago using presolder stuff

  • Christiaan van Vollenstee February 17, 2013 at 11:05pm

    This happend to my bixler about 4 days ago. I was using dean plugs.

  • Carl La France February 17, 2013 at 8:21pm

    A few years back we got some switches from Spicier controls  and they were built backwards  The normally open contacts were normally closed  etc after returning them they found out  one of the employees got a lay off notice, For a couple of weeks he ran crap about 10,'000 switches with the wrong jackets on them. The wire that didn't fall off doesn't look the best either 

  • Michael February 17, 2013 at 7:21pm

    I had exactly the same issue.  Same part.  Same wire.  Same connector.  Same poor solder.  And a crash.  Fortunately, everything survived except for a small bend in an arm.  Very lucky.  Easy fix and it was flying again.

    Mike

  • 3D Robotics
    Chris Anderson February 17, 2013 at 4:12pm

    Sorry to see this, George. That's the last part we still had made in China. As Craig says, we'll be inspecting the entire batch, but it looks like we should probably be making these in our own factories to ensure higher quality. If you want something done right....

    Thanks for the heads up. 

  • Developer
    Craig Elder February 17, 2013 at 3:26pm

    Thanks for the report on this.  We will be contacting the vendor and inspecting every part we have in stock this week.

  • George Pokachalov February 17, 2013 at 1:48pm

    Yeah... And it caused very very disappointing crash((

This reply was deleted.