About a month a go I decided to get into rc multicopters so I purchased an F450 kit from ebay.
while I was waiting for the F450 to arrive I researched and purchased all additional parts and equipment needed to build the quadcopter. it took about 2 - 3 weeks to get everything need together so I had plenty of time to research configuration and build on youtube.
The F450 consists of the following conponets:
F450 Quadcopter clone
Heightened Landing gear
3M gps unit
30A hobbypower (linear) ESC.
Zippy 3S 5000mah 20/30 C lipo
FlySky fs-th9x transmitter stock
I guess the weight is between 1500 to 1600 grams
I calibrated the ESCs, auto trimmed and auto tuned the F450 on it's first flight and have not had any issues with it during the dozen flights it's been on,
The only issues I've encountered are that it wants to crash within a foot off the ground when lifting off from within 10yards from my house. I suspect thats due to the 3 2.4g access-points with high gain antenna I have running in the house.
On the last flight I flew, the quad crashed within 100 yards. it started flying as normal. I took off to about 20 feet and pitched forward quickly for about 50 yards and was in the process of pulling quick altitude to make sure I cleared the very tall trees. The quad started to climb and just stopped in mid air and leaned over like it might have broken a propeller. I've looked at the telemetry data and data log data from the apm but am not sure of the cause. The telemetry logs are saying -96 feet altitude when it crashed but does not stated the quad has crashed.
Damage during the crash is as follows:
2 half broken props
1 fully broken prop
arm cracked at motor mount forcing motor to lean inward
telemetry popped out of it's case
GPS unit fell of the rod from the top of it's mast.
My gut feeling is that the GPS fell off and caused the crash, however from everything I've read STAB mode does not require GPS.
Before the crash I had decided to turn the F450 quad into a F550 hex because it would give me more redundancy if I have a motor/prop/esc failure, so I have a new frame, motors and escs on the way. I just want to make sure that there is not an electronics issue when I transfer the F450 parts to the F550.
I'm uploading the telemetry logs and data flash logs encase anyone wants to take a look and help me diagnose the problem. Telemetry for the crash flight starts about 74% .