Eagle Tree Vector - Manual (Page 43)

USER GUIDE
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gains work is required in most circumstances.
Basic Gains
There are four main axes (or directions) that are controlled by
separate gains: pitch, roll, yaw, and altitude hold (vertical). The
gains that control these are referred to as “Basic Gains”.
The basic gains control how strongly the Vector responds to
perturbations (stick movements, air turbulence, etc.) in each axis.
When you are in a 2D (model leveling) mode, basic gains control
how hard the controller will push your control surfaces (or
motors) to return to level flight, when your control stick is
centered.
If a gain value is too low, the Vector will not push your control surface or motors hard enough to return to level
quickly. For example, with a fixed wing plane in 2D Mode, if the roll gain is not high enough, the wings may not
return to level quickly (or at all) when you release the sticks.
If a gain value is too high, the Vector may push your control surfaces or motors too hard to return to level,
which can cause oscillations.
If a gain value is excessively high for your airframe, the oscillations can make the model become
uncontrollable!
When you are in 3D Heading Hold (Direct Rate) mode, the basic gains dictate how strongly the controller will
work to keep the model in its current orientation.
Stabilizer Responsiveness
The responsiveness control is applicable only in 2D (leveling) modes. The responsiveness dictates how
smoothly the model will follow the user’s stick commands. A higher responsiveness will make your model
more stiff and twitchy. A lower responsiveness will make the model feel slower, and more fluid. It is
recommended that you change responsiveness only one increment at a time, as a small change can have a
significant impact on handling.
5.11.1.2 Adjusting Gains
The Vector gains are adjusted by invoking menu mode, selecting “Stabilizer Settings” from the main menu, and
changing the gains from that menu.
NEVER use gain settings specified for a different controller with the Vector! Gain values are NOT
interchangable between flight controllers!
It is recommended that gains be adjusted up or down in small increments (about 10% at a time) until the best
setting is found. The chart below shows how too high or too low gains can affect flight:
Gain Gain too High Symptom
Multirotor
Gain too High
Symptom Fixed
Wing
Gain too Low
Symptom Multirotor
Gain too Low
Symptom Fixed
Wing
Pitch Basic Oscillation/Vibration in
Pitch Axis Same Slow leveling in
Pitch axis when
stick centered Same