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Section 6B – Rudder Servo Installation: Direct Linkage
Required Parts
•.Fuselage.w/.stabilizer.
•.8-32.flange.nut.
•.4-40.locknut.
•.Ball.link.for.swivel.link
•.4-40.x.1/2".socket.head.screw
1
•.8-32.x.2
/
".control.horn.screw
.
4
Required Tools and Adhesives
•.Drill.
•.Drill.bit:.1/16".(1.5mm)
•.Aluminum.servo.arms
•.Control.horn.ball.ends
•.24".(610mm).Servo.Extension.(JRPA102)
The.rudder.requires.a.minimum.of.100.ounce.inch.
of.servo.torque..In.the.prototype.CAP.232Gwe.used.
JRPS8411.servos.with.excellent.results..Using.servos.with.
less.torque.could.result.in.blow.back.
The.rudder.servo.installation.is.very.similar.to.that.of..
the.elevator.and.aileron.servos..You.can.either.follow..
the.steps.as.described,.or.just.use.the.last.photo.to.
illustrate.the.direction.of.the.servo.and.layout.of.the.
completed.linkage.
.Step 1
Install.an.24".(610mm).servo.extension.onto.the.rudder.
servo..Tie.the.servo.leads.together,.using.a.commercially.
available.connector,.or.use.unwaxed.dental.floss.to..
secure.the.extensions.to.prevent.them.from.coming..
loose.during.flight.
22
•.8".rudder.linkage
•.Molded.swivel.link
•.Ball.link.for.servo.arm
•.Dental.floss.or.string
.Step 2
Remove.the.covering.from.the.rudder.servo.opening.on.
the.left.side.of.the.fuselage.using.a.hobby.knife..Install.
the.servo.in.the.fuselage.tail.section.with.the.output.shaft.
to.the.rear.of.the.fuselage..Drill.1/16".pilot.holes.before.
installing.the.screws..Using.the.screws.included.with.the.
servos,.fasten.the.servo.in.place.
.Step 3
Mix.a.small.amount.of.30-minute.epoxy.and.lightly.coat.
the.inside.of.the.hole.in.the.rudder.and.the.8-32.x.2
control.horn.screw..Thread.the.screw.into.the.hole.from.
the.right.side.of.the.rudder..Wipe.away.any.excess.epoxy.
on.the.rudder.and.screw.with.rubbing.alcohol.and.a.paper.
towel..Screw.the.8-32.flange.nut.in.place.as.shown..Allow.
the.epoxy.to.fully.cure.
1
/
".
.
4
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