The GY701 is used by connecting the “rpm” input
to the governor speed setting channel of your sys-
tem. When using an independent governor on/off
switch, activate the “(6) Governor on/off switch”
funtion within the “Governor Basic Setting” section
earlier in this manual. (S.BUS connection only)
Direct set by transmitter on Gov. mixing
A contained governor mixing like T14MZ
and T12FG function is used to switch the
RPM of the rotor head speed. The head speed
can be switched with each condition or the
switch.
*For a description of the governor mixing, refer to
your transmitter’s manual.
Using by 3position switch
Set the RPM at each switch position in the “(2)
Revolution setting” menu within the “Gov-
ernor Basic Setting” section earlier in this
manual.
Speed setting precautions
• When the speed setting channel travel (EPA, ATV,
AFR) is made 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 hori-
zonal ight. 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. (Example:
If 1800 R.P.M.’s is max then set governor to 1750)
• The maximum speed can be veried at the MAX.
speed display, however this could show some un-
locked main rotor condition which is not accurate.
Reference
The transmitter EPA function can also be used to
change the point 1 and point 3 speed settings to a
certain extent. The amount of this change is pro-
portional to the difference between the point 1 and
point 3 set speed and the point 2 set speed. For
example, if point 1 is set to 1300rpm and point
2 is set to 1500rpm, and the transmitter EPA is
changed from 20 to 100%, the point 1 speed will
change from 1460 to 1300rpm. The transmitter
EPA function has very little effect on the point 2
speed setting.
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