An issue has risen with my throttle IMAX using the PH2 on our big sprayer drone, Graupner 100A ESCs and u13 motors (yes, big), but I also recall it occurring on the new beta on PH1 just before I switched to the PH2.
Basically, the IMAX is changing itself during flight. I have it set to 5 starting off and then I'll start experiencing violent jerks either increasing or decreasing altitude during flight and come to land the copter and notice that the throttle IMAX PID has risen to 40 or 50. Then I have to put it back down to 5 and the problem disappears until a couple flights later when it creeps back up to the 40-50 range.
I attached the last log from my flight today. Another issue (don't know if it's related or not), occurred when I landed on this flight. As soon as I landed motor 6 would not spool down all the way. In fact, even after I activated an emergency stop of the motors it still spooled back up and got more and more violent, almost flipping the entire copter. Luckily, I toggled the emergency stop until the motor finally quit acting up and managed to quickly unplug the copter.
Attached the log from this flight and hope someone can help me as soon as possible. I really need to make sure this value does not change itself as it can lead to a serious accident for my beginner drone operators here.
Link to log: https://drive.google.com/open?id=0B_Z4GlBtSfZUTU5xSzZyaE5wNzQ