VIQuad
Member
I was flying around the other day, stopped to hoover 3 ft off the ground and all of a sudden the quad just flipped over to the right and crashed in the grass. Broke the #1 arm on the inside of the quad where it connects to the frame.
See the Blackbox log here - http://log.xaircraft.com/#2014_05_18_112855.750_186.1.02.51
See the video here(happens at 2:50) - https://www.youtube.com/watch?v=LlySBPxGMdc
If you note on the black box file, right before the crash I was just hoovering there and not giving any inputs. I was about 3ft off the ground and all of a sudden it rolled over and slammed into the ground - OUCH! Very odd to say the least. I was shocked. I have no clue what would cause it to do this.
I'm curious to learn what caused this before rebuilding to try and make sure it doesn't happen again. I have sent all this info to XA people and have not heard anything...
In the blackbox file - I see the voltage seems fine throughout the flight, I see that motor #4 goes to 99% all of a sudden. Everything on the quad was tuned up great, motors balanced, props, new stock ESC's and motors. Motor power looks good throughout the flight.
Also note the VERY low vibrations even with all the fast aggressive flying. So everything was working great. Well apparently not...haha!
Only thing I can think of is maybe that the #1 arm had "weakened" over time, and just got to its limit and snapped under pressure?... But that seems odd seeing it wasn't under load at the time of the crash. It was just hoovering there. Granted both of the 2 flights in the black box log were fast and had some aggressive maneuvers ie. hard stops, full forward flight, rocking back and forth, high speeds(see fastest speed).
Very strange.....
See the Blackbox log here - http://log.xaircraft.com/#2014_05_18_112855.750_186.1.02.51
See the video here(happens at 2:50) - https://www.youtube.com/watch?v=LlySBPxGMdc
If you note on the black box file, right before the crash I was just hoovering there and not giving any inputs. I was about 3ft off the ground and all of a sudden it rolled over and slammed into the ground - OUCH! Very odd to say the least. I was shocked. I have no clue what would cause it to do this.
I'm curious to learn what caused this before rebuilding to try and make sure it doesn't happen again. I have sent all this info to XA people and have not heard anything...
In the blackbox file - I see the voltage seems fine throughout the flight, I see that motor #4 goes to 99% all of a sudden. Everything on the quad was tuned up great, motors balanced, props, new stock ESC's and motors. Motor power looks good throughout the flight.
Also note the VERY low vibrations even with all the fast aggressive flying. So everything was working great. Well apparently not...haha!
Only thing I can think of is maybe that the #1 arm had "weakened" over time, and just got to its limit and snapped under pressure?... But that seems odd seeing it wasn't under load at the time of the crash. It was just hoovering there. Granted both of the 2 flights in the black box log were fast and had some aggressive maneuvers ie. hard stops, full forward flight, rocking back and forth, high speeds(see fastest speed).
Very strange.....
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