Hangar 9 1/4-Scale J-3 Cub ARF - Manual (Page 36)

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Required Parts
•.Wing.(left.and.right). •.Short.strut.pin.(4)
•.Mid-span.stud.(4). •.4mm.nut.(4)
•.Wing.strut.end.(4). •.Long.strut.pin.(4)
•.Retainer.clip.(8). •.Aluminum.wing.tube
•.Wing.strut.wing.bracket. •.4-40.locknut.(8)
•.1/4-20.nylon.wing.bolt.(2)
•.Mid-span.cross.brace.(2)
•.4-40.x.3/4-inch.socket.head.screw.(8)
•.4-40.x.3/8-inch.socket.head.screw.(4)
•.4-40.x.1/2-inch.socket.head.screw.(4)
•.Front.wing.strut.(left.and.right)
•.Rear.wing.strut.(left.and.right)
Required Tools and Adhesives
•.Hex.wrench:.3/32-inch. •.Threadlock
•.Nut.driver:.1/4-inch
 .  .Step 1
Attach.the.wing.strut.wing.brackets.to.the.bottom.of.the.
wing.using.four.4-40.x.3/4-inch.socket.head.screws.
Note:.Use.threadlock.on.the.screws.to.
prevent.them.from.vibrating.loose.in.flight.
 .  .Step 2
Thread.two.of.the.mid-span.studs.into.the.wing..The.
threads.of.the.studs.should.be.flush.to.the.top.of.the.wing
 .  .Step 3
Attach.the.front.and.rear.wing.strut.to.the.brackets..
using.four.4-40.x.1/2-inch.socket.head.screws.and..
4-40.locknuts.
Note:.The.wide.strut.goes.toward.the.leading.
edge,.the.narrow.strut.toward.the.trailing.
edge..The.airfoil.on.the.struts.will.match.
the.wing.as.well.when.they.are.installed.
Wing Installation