Recommended center of gravity (cg), Pre-flight, Range test your radio – Hangar 9 Pulse XT 40 ARF User Manual
Page 35: Pre-flight range test your radio

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Charge.both.the.transmitter.and.receiver.pack.for.your.
airplane..If.you.are.flying.an.electric.version,.make.sure..
to.charge.the.motor.battery.as.well..Use.the.recommended.
charger.supplied.with.your.particular.radio.system,.
following.the.instructions.provided.with.the.radio..In..
most.cases,.the.radio.should.be.charged.the.night.before.
going.out.flying.
Check.the.radio.installation.and.make.sure.all.the.control.
surfaces.are.moving.correctly.(i.e..the.correct.direction.
and.with.the.recommended.throws).
Check.all.the.control.horns,.servo.horns.and.clevises.to.
make.sure.they.are.secure.and.in.good.condition..Replace.
any.items.that.would.be.considered.questionable..Failure.
of.any.of.these.components.in.flight.would.mean.the.loss.
of.your.aircraft.
Glow Powered:
Test.run.the.engine.and.make.sure.it.transitions.smoothly.
from.idle.to.full.throttle.and.back..Also.ensure.the.engine.
is.tuned.according.to.the.manufacturer’s.instructions,..
and.it.will.run.consistently.and.constantly.at.full.throttle.
when.adjusted.
Electric Powered:
Make.sure.the.motor.battery.has.been.fully.charged.and.
is.secure.inside.the.fuselage..Operate.the.motor.and.make.
sure.it.operates.smoothly.from.low.throttle.to.full.throttle.
and.back.
Recommended Center of Gravity (CG)
An.important.part.of.preparing.the.aircraft.for.flight.is.
properly.balancing.the.model..This.is.especially.important.
when.various.engines.are.mounted.
Caution: Do not inadvertently
skip this step!
The.recommended.Center.of.Gravity.(CG).location.for..
the.Pulse.XT.is.2
.
3
/
4
".(70mm).behind.the.leading.edge..
of.the.wing.against.the.fuselage..Make.sure.the.aircraft..
is.inverted.when.measuring.the.CG..If.necessary,.move..
the.battery.pack.or.add.weight.to.either.the.nose.or.the..
tail.until.the.correct.balance.is.achieved..Stick-on..
weights.are.available.at.your.local.hobby.store.and..
work.well.for.this.purpose..
Note:.The.range.for.the.center.of.gravity.
is.2
.
1
/
2
".(63mm).to.3".(76mm).
Pre-Flight
Range Test Your Radio
Range.check.your.radio.system.before.each.flying..
session..This.is.accomplished.by.turning.on.your.
transmitter.with.the.antenna.collapsed..Turn.on.the..
radio.in.your.airplane..With.your.airplane.on.the.ground,.
you.should.be.able.to.walk.30.paces.away.from.your.
airplane.and.still.have.complete.control.of.all.functions..
If.not,.don’t.attempt.to.fly!.Have.your.radio.equipment.
checked.out.by.the.manufacturer.