Ok,
Everything has been going just fine with my quad in testing and shorter flights. However yesterday, I added my gimbal, and went for a real flight. Everything worked well, I tested failsafe, came back to home position perfectly. I sent it on it's way again and all was doing fine then all of a sudden, the quad starts to fall out of the sky, flipping continuously it seems in one direction.
Here is a video I took. The crash happens at around 4:40.
A couple of things seem important here.
1) Power is still available since the led's (blue) are still lit as it crashes.
2) The quad is constantly flipping in one direction. Seems like one or more ESC / Motor combos are failing.
3) Upon landing and about 45 minutes later (spent looking for it in high grass), voltage was at 4.00V per cell.
Damage was minimal, one broken arm and a couple of lost vibration grommets. Now I powered up the quad at home in broken condition. Everything works, except that one motor seems to be real weak compared to all the others. For example, I can stop it's rotation easily with my hand while the others I can't.
In addition, if I unplug this motor and put it on a different ESC, then I cannot stop the motor.
Conclusion: One ESC has failed or the ESC calibration was not done correctly.
My friend has a video of the quad before take off, and it would seem that the motor/ESC in question is turning slower than all the rest when on the ground.
Comment? Is my analysis good? This is my first crash.
Equipment: Tarot 650 Sport QUAD
ESC RangeVideo 40A Opto
Motors: Sunnysky 4018S 600kV.
Naza M V2 FW 4.01
GensAce 4S 5300ma/h
Thanks for any insight.
Tom
Everything has been going just fine with my quad in testing and shorter flights. However yesterday, I added my gimbal, and went for a real flight. Everything worked well, I tested failsafe, came back to home position perfectly. I sent it on it's way again and all was doing fine then all of a sudden, the quad starts to fall out of the sky, flipping continuously it seems in one direction.
Here is a video I took. The crash happens at around 4:40.
A couple of things seem important here.
1) Power is still available since the led's (blue) are still lit as it crashes.
2) The quad is constantly flipping in one direction. Seems like one or more ESC / Motor combos are failing.
3) Upon landing and about 45 minutes later (spent looking for it in high grass), voltage was at 4.00V per cell.
Damage was minimal, one broken arm and a couple of lost vibration grommets. Now I powered up the quad at home in broken condition. Everything works, except that one motor seems to be real weak compared to all the others. For example, I can stop it's rotation easily with my hand while the others I can't.
In addition, if I unplug this motor and put it on a different ESC, then I cannot stop the motor.
Conclusion: One ESC has failed or the ESC calibration was not done correctly.
My friend has a video of the quad before take off, and it would seem that the motor/ESC in question is turning slower than all the rest when on the ground.
Comment? Is my analysis good? This is my first crash.
Equipment: Tarot 650 Sport QUAD
ESC RangeVideo 40A Opto
Motors: Sunnysky 4018S 600kV.
Naza M V2 FW 4.01
GensAce 4S 5300ma/h
Thanks for any insight.
Tom
