27
.
Step 12
Carefully.insert.the.stopper.assembly.into.the.fuel.tank..
Note.the.position.of.the.vent.tube;.it.must.be.up.at.the.
top.portion.of.the.fuel.tank.to.function.properly..Also,.it.
may.be.necessary.to.shorten.the.length.of.the.fuel.pickup.
tubing.to.make.sure.the.clunk.does.not.rub.against.the.
back.of.the.fuel.tank..You.should.be.able.to.turn.the.tank.
to.any.attitude,.and.the.clunk.will.fall.to.the.lowest.point.
(all.directions.except.for.having.the.stopper.facing.down)..
Tighten.the.M3.x.20.screw.carefully—do.not.over-tighten..
This.allows.the.rubber.stopper.to.form.a.seal.by.being.
slightly.compressed,.thus.sealing.the.fuel.tank.opening.
Note
:.When.installing.the.fuel.tank,.make.
sure.to.have.a.piece.of.foam.at.any.point.
that.contacts.any.structure.inside.the.
fuselage..Without.the.foam,.vibrations.will.be.
transmitted.to.the.fuel.tank,.which.could.cause.
the.fuel.to.foam..In.turn,.you.will.not.get.the.
optimum.performance.from.your.engine.
.
Step 13
Cut.a.piece.of.1/4".foam.the.size.of.the.bottom.of.the.fuel.
tank..Secure.the.fuel.tank.to.the.fusel.tank.floor,.placing.
the.foam.between.the.tank.and.floor.
Note
:.The.longer.tabs.on.the.floor.face.
toward.the.front.of.the.fuselage.
.
Step 14
Secure.the.fuel.tank.floor.into.the.fuselage.using.30-
minute.epoxy.
Note
:.Once.the.epoxy.has.cured.it.may.be.
necessary.to.move.the.fuel.tank.forward.
or.aft.depending.on.your.servo.location.
to.prevent.binding.of.the.servo.
Section 8 – Engine Installation