I've had issues since they released BeastX v1. Recently my Vbar packed up so I bought another AR7200BX while the Vbar was away getting fixed. I was sort of hoping it would fly really well so I could use the Vbar on my 500 EFL I have. I don't know why I keep hoping it will perform as well as the Vbar. No idea what the issue is with the BeastX or where I am getting the setup wrong but it flew 'ok' at best. It's weird because the Blade 450X looks like it flies great with it on and I flew a 500 with the BeastX on it it was not terrible either. I tried all the pots from all the way up to all the way down and a mixture of both and it flew pretty much the same apart from pot 1 all the way up was unflyable (as expected with cyclic gain that high). I tried all the different settings in the parameters menu as well and got it flying a bit better but still it would chicken dance in the air. To me it sounds like the blades are stalling and the beastx doesn't know what to do and the whole heli just goes off axis. Worse still is that the tail speeds up like a mad catherine wheel most of the time making learning any more piro moves nigh on impossoble. I have tried upping parameter D gain, increasing pot 3 with little or no difference. Also tried lowering them but then it just doesn't hold. My setup is below:
Cyclic: Savox SH0257MG
Motor: 450MX with 15t pinion
ESC: Align 35A
Blades: Align 3G
Max pitch is 11 degrees and cyclic was blue at 6 degrees indicating good geometry.
I also tried it with MKS DS95's on cyclic and while it was slightly better it was still very apparent.
I'm running all the servo's at 5.5v.
For anyone thinking it's my servo's the whole heli performs flawlessly with Vbar so it must be a setup issue but no amount of tweaking seems to cure it. I have almost perfect mechanical setup on the tail, in rate mode it barely moves in any direction and my servo hole is 8mm from centre and on the innermost hole.
My only thought is the cyclic limit. I usually set this up so I don't get any binding but maybe I will try to lower this considerably to see if this helps.
So before I sell yet another BeastX unit...........any other ideas?