7CH Essential Instructions R1.0 2022/11/08
9
The diagram shows how the surfaces should respond with a momentary pulse when the model is moved about
each axis. When the model is rolled sharply to the right, the right aileron should go down and the left aileron up,
briefly, to resist the displacement. Likewise, when the model pitches nose-down, the elevator should go up
briefly to compensate. And when it yaws nose-right, the rudder should go left for a moment before returning to
neutral.
Remember that this receiver provides rate stabilization, not auto-levelling. Thus, when testing, the control
surfaces will only be displaced while the model is being disturbed. As soon as angular motion stops, they will
return to neutral. Hence, look for quick twitches of the control surfaces in the right directions, not prolonged
control offsets.
THE FOLLOWING IS VITALLY IMPORTANT:
If stabilization moves any of the surfaces the wrong way (i.e., to increase the disturbance), your model may be
uncontrollable (until you switch off stabilization)!
To correct this, change the appropriate stabilization response direction indicated by the three green LEDs: G1
(aileron), G2 (elevator) or G3 (rudder). Instructions on how to program the receiver to do this are in Step 4 on
page 6.
Just as experienced RC pilots check stick directions before the first flight of the day, so a pilot using a stabilizer
should regularly check that the surfaces move correctly in response to a disturbance.
9. Set dual rates and expo in the transmitter
With the control surfaces set to move in the correct directions and with the full throws recommended for your
model, you can now adjust the response to transmitter stick inputs by setting dual rates (D/R) and expo.
A good starting point for D/R is to set High Rate to 100%, Mid-Rate (if available) to 80-85%, and Low Rate to 65-
75% for each axis. Expo of around 20% softens response around neutral and can make smooth flying easier.
These settings can be adjusted to your liking after the initial flights.
Stabilization settings also affect the response of the model to transmitter input, typically somewhat reducing
sensitivity with an expo-like effect.
Note that the dual rate and expo settings in the transmitter determine stick response but don’t affect how
stabilization works. That is entirely done within the receiver.
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