That's the exact setup I've been running. I've only flown it in stabilize mode so far (running 3 6s 5000mah batteries) as I am waiting for an APM 2.5 case right now before trying out the other modes. However, it was very stable for me in stabilize with the default settings.
https://vimeo.com/56610707 here is a flight of mine on the 800.
Can you post some pics of your APM installation? The flight looked very smooth.
Here is my S900 Clone setup with apm 2.5 rctimer clone. Next I will be adding FPV.
No issues with the frame so far it’s been great but I cannot compare it to a DJI frame. I love the frames with the built in PCB makes life some much easier. The only thing that I think could be improved is the arms. They seem like they flex a little too much but I have not had one break.
Nick,, I originally posted the question about APM on my S800.
What did you set your Roll_P at.....close to .15?
Not much tuning at all. Powered with a small 1500 lipo with http://store.diydrones.com/APM_Power_Module_Dean_Connectors_p/br-ap...
See my video above.
I am setting an s800 clone with apm2.5...could you describe your setup/PID s etc...regards kpc
I am guessing its this one...