AR7200BX Cyclic Oscillation
I am currently dealing with some AR7200BX cyclic oscillation issues.
The problem is three fold:
- The 4F200 is a small 200 size heli
- The AR7200BX is sensitive to input voltage and needs a BEC voltage of 5.0 volts when fitted into a small 200 size heli.
- The HobbyWing FunFly 40A BEC is measuring at 5.3 volts (+/- 1 volt).
In my latest flight video I am flying with a different ESC, the HobbyWing FunFly 40A ESC with built-in switched BEC rated (on the label) at 3 amps and 5.0 volts. But I measured the actual running voltage to be 5.3 volts.
On the AR7200BX there is a trim pot #1 used to trim cyclic gain. I have it turned all the way down. I can't go any lower. And cyclic oscillation still appears.
So I am considering getting the Castle Creations BEC. Its $24 dollars from my LHS. The output voltage is programmable from 4.8V to 9 volts in tenths of a volt increments. From what I have read and heard is the output voltage is very accurate. Sounds like this will be "a" solution to my problems.