• In order to ensure proper operation and the best possible performance of the heading lock gyro,
it will be necessary to disable the standard rate gyro and mixer in the -in-1 control unit. This
is accomplished by turning the proportional mix trimmer pot on the -in-1 to the lowest, most
counterclockwise position (-). No adjustment of the gyro gain trimmer pot on the -in-1 control unit
is necessary.
•. Now.that.you.have.completed.installation.of.the.heading.lock.gyro,.it.will.be.necessary.to.set.and.adjust.the.
gyro.and.transmitter.for.proper.response .
•. If.you.are.using.the.G90.gyro,.please.set.it.to.the.following:
Reverse.–.REV.(Reversed)
Servo Mode.–.STD.(Standard)
Note: You must be certain that the G90 gyro is set to “Standard” servo mode to ensure proper
response and performance of the gyro. If it is set to “Digital” servo mode, the electronic speed control
and tail motor will not respond properly to inputs from the gyro or transmitter.
•. If.you.are.using.a.gyro.other.than.the.G90,.be.sure.to.follow.the.instructions.included.with.the.gyro.to.ensure.
that.it.has.been.set.properly .
Once.you.have.set.the.reversing.and.servo.mode.for.the.gyro,.it.will.be.necessary.to.confirm.that.the.settings.
are.correct.before.proceeding.with.test.flights.and.adjustment.of.the.gyro.mode.and.gain.settings ..To.check.for.
proper.response.of.the.tail.motor/rotor.to.gyro.and.transmitter.inputs,.please.refer.to.the.following:
•. First,.for.added.safety.during.the.test,.disconnect.the.main.motor.power.lead.from.the.3-in-1.control.unit,.noting.
the.polarity.so.that.you.can.reinstall.it.properly.following.the.test .