Specifications

12. You may need to drill a new hole in the servo horn for the best results.
There are three controls which require setup on the GY240.
13.5.4.1.2. Setting AVCS
Set to ON. AVCS is Futaba's name for "heading hold" and you want this enabled.
13.5.4.1.3. Setting DIR
1. Turn on the transmitter.
2. Disconnect the heli motor.
3. Plug in the heli battery.
4. Wait for the gyro to initialize.
5. Turn the heli right about 20 degrees. If your tail rotor faces left(Corona) then the tail rotor
blades should increase in pitch. If your tail rotor faces right (ECO, Logo) then the tail rotor
blades should decrease in pitch.
6. If the tail rotor blade pitch change is wrong, then flip the direction switch on the gyro, and
retest.
13.5.4.1.4. Setting GAIN
1. For the Corona, the GY240 does not hold the tail well without high gain (because it's fixed
pitch) so set this to about 75%.
2. Otherwise, set this to 50% to start. It can be adjusted later if the tail wags too much.
13.5.4.2. GY401 setup
There are five controls on the gyro and one on the transmitter which require setup on the
GY401.
13.5.4.2.1. Setting DS
This should be OFF unless you are using a S9253 S9250, S9450, etc. digital servo compatible
with a fast update rate. Not all digital servos are compatible with the GY401 DS mode!
13.5.4.2.2. Setting DIR
See the GY240 section on setting this switch.
13.5.4.2.3. Setting DELAY
The DELAY adjustment tells the gyro the expected speed of the tail servo. Low delay values
should be used for fast servos, and high delay values should be used for slower servos. If this
value is set too low, then the tail will wag a little after the heli is turned.
Set this to about 50 initially.
Helicopter and Transmitter Setup
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