Futaba CGY750 User Manual
Page 18
18
G
OVERNOR
S
PEED
S
ETTING
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Direct set by transmitter on Gov. mixing
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Using by 3position switch
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Speed setting precautions
• When the speed setting channel travel (EPA, ATV, AFR) is set to 20%
or less, points 1 and 3 cannot be set.
• The engine maximum speed range limits the maximum speed setting.
• Test fly the helicopter with the governor turned off and tach the main
rotor R.P.M. while in horizontal flight. This is the maximum R.P.M. that
can be achieved with the engine and pitch setup that you are using.
Please set the governor maximum speed to approximately 50 R.P.M.’s
less than max R.P.M. (Example: If 1800 R.P.M.’s is max, then set gov-
ernor to 1750)
• The maximum speed can be verified at the MAX. speed display. How-
ever, this value could reflect an unlocked main rotor condition and
would thus be inaccurate.
Reference
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Speed
Point 3
Point 2
Point 1
Neutral
Speed setting
channel travel
Governor operation
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Condition of the governor to be on
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The following operations do not indicate trouble:
When engine speed rises above the set speed:
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Throttle operation speed and ON/OFF point:
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Deviation from set speed:
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YRO
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AIN
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ETTINGS
Recommended gain settings:
Size
Recommended Gyro Gain
AIL/ELE Gyro
450-550
50-60.00%
600-700
50-60.00%
750-more
50-60.00%
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B
EFORE
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DJUSTMENTS
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WARNING
Always level the swashplate using the cyclic stick before applying
throttle and spooling the main rotor blades up. During takeoff small
corrections may be necessary. If you make large corrections while the
helicopter is on the ground, it may tip over since the helicopter is firmly
on the ground and the gyros are overcompensating due to the lack of
movement.
Some helicopters may have a tendency to resonate/shake during
spool up. Always leave the helicopter on the ground until this reso-
nance or shaking goes away. If this issue continues, it is recommend-
ed to try some rubber skid stops or take off from a softer surface such
as grass. Vibrations contribute to this ground resonance. Verify that
everything on your model is balanced correctly.
G
OVERNOR
O
PERATION
WARNING
Safety reminder: Remember to configure your transmitter fail safe
settings for not only the throttle channel but also governor ON/OFF
channel to ensure the governor correctly disengages should the radio
enter fail safe.