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E-FLITE J-3 Cub 25 ARF Assembly Manual

Summary of J-3 Cub 25 ARF

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    J-3 cub 25 arf assembly manual.

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    Introduction the piper j-3 cub is an all-time favorite among aviation enthusiasts everywhere. Classic lines and predictable flight performance are just a few of the cub’s trademarks. The 25-size j-3 cub from e-flite ™ is the first of its size for e-flite. The name piper j-3 cub .25 arf implies the p...

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    Large replacement parts: efl4001 wing w/ailerons efl4002 fuselage efl4003 tail set efl4004 landing gear efl4005 cowling efl4009 tailwheel assembly small replacement parts: efl4006 windshield/window set efl4007 pushrod set efl4008 main wheels covering colors cub yellow hanu884 black hanu874 contents ...

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    Required electronics & accessories complete radio system jsp16000** jr sport ™ 6-channel radio system or purchase separately jsp30600 rs600 6-channel receiver w/o crystal jrpxfr** fm receiver crystal jsp20040 mn48 mini servo (4) jsp98020 6" y-harness jsp98110 6" servo extension (2) jrpa212 long serv...

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    Optional accessories efla110 power meter efla500 float set, 25-size warning an rc aircraft is not a toy! If misused, it can cause serious bodily harm and damage to property. Fly only in open areas, preferably at ama (academy of model aeronautics) approved flying sites, following all instructions inc...

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    As horizon hobby, inc. Has no control over use, setup, final assembly, modification or misuse, no liability shall be assumed nor accepted for any resulting damage or injury. By the act of use, setup or assembly, the user accepts all resulting liability. If you as the purchaser or user are not prepar...

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    Questions, assistance, and repairs your local hobby store and/or place of purchase cannot provide warranty support or repair. Once assembly, setup or use of the product has been started, you must contact horizon hobby, inc. Directly. This will enable horizon to better answer your questions and servi...

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    Landing gear installation required parts • fuselage • landing gear • hub cap (2) • tie wrap (6) • inner wheel hub (2) • outer wheel hub (2) • 4mm wheel collar (2) • 3mm setscrew (2) • landing gear strap (4) • landing gear fairing (2) • 2 1 / 2 " (63mm) foam wheel (2) • 2mm x 15mm sheet metal screw (...

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    1. Place the landing gear in position with the larger diameter wire to the front of the fuselage. Secure the gear using four landing gear straps and eight 2mm x 10mm sheet metal screws. 2. Slide the inner wheel hub onto the landing gear. (the holes in the inner hub do not go through the hub.) slide ...

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    3. Press the 2 1 / 2 " (63mm) foam wheel onto the inner hub. Press the outer wheel hub into the wheel. Complete the assembly using four 2mm x 15mm sheet metal screws. 4. Press the hub cap into the outer wheel hub. 10

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    5. Attach the landing gear fairing to the landing gear using three tie straps. Trim the excess strap side cutters. 6. Repeat steps 2 through 5 to complete the landing gear installation. 11.

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    1. Prepare the outrunner motor by attaching the x-mount to the motor using screws supplied with the motor. Motor and cowling installation required parts • fuselage • cowling • hook and loop straps (2) • 6-32 x 1/2" socket head screw (4) • 2mm x 10mm sheet metal screw (4) • propeller adapter • 12 x 6...

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    2. Attach the motor to the firewall using four 6-32 x 1/2" socket head screws included with the j-3 cub. Note :.The.Firewall.Has.Been.Prepared.To.Mount. The.E-flite™.Power.25.Brushless.Motor..It.May. Be.Necessary.To.Remove.The.Blind.Nuts.And.Drill. New.Mounting.Holes.For.Other.Motor.Choices. 3. Atta...

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    4. Use hook and loop material to secure the battery into the fuselage. Note :.Now.Would.Be.A.Good.Time.To.Plug.The. Speed.Control.Into.The.Receiver.And.Check.The. Operation.Of.The.Motor..It.Should.Rotate.Counter- clockwise.When.Viewed.From.The.Front.Of.The. Fuselage..Once.The.Operation.Of.The.Motor....

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    6. Position the cowling so it lines up with the propeller and adapter. Allow for 1/8” (3mm) clearance between the propeller and cowl. Drill four 1/16" (1.5mm) holes for the cowl mounting screws. Enlarge the holes in the cowling only using a 1/8" (3mm) drill bit. Secure the cowling using four 2mm x 1...

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    Note :.The.Servo.Openings.In.The.Fuselage.Are. Set.Up.For.The.Jr.Sport ® .(mn48).Mini.Servos. 2. Center the servo in the servo opening. Use a 1/16" (1.5mm) drill bit to drill the locations for the servo mounting screws. Radio installation required parts • fuselage • receiver • mini servo (2) • 6" y-...

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    3. Secure the servo using the screws provided with the servo. Repeat step 2 for the remaining servo. 4. Plug the rudder, elevator and speed control into the receiver, as well as the aileron y-harness. Use hook and loop to secure the receiver in the fuselage. Route the antenna wire through the tube i...

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    Wing assembly required parts • clevis (2) • clevis retainer (2) • pushrod wire keeper (2) • ca hinge (6) • mini servo (2) • 6" servo extension(2) • cub yellow covering strip • wing panel (left and right) • aileron (left and right) • plywood wing joiner (2) • aileron servo cover (left and right) • 3/...

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    2. Drill a 1/16" (1.5mm) hole in the hinge center of both the aileron and wing. 3. Place the hinges in the aileron. 19.

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    4. Slide the aileron and wing together. Remove the t-pins. There should be a 1/64" (.4mm) gap between the aileron and wing. Make sure the aileron can move freely without binding. Note :.The.Aileron.Has.A.Block.Installed.For.. The.Aileron.Control.Horn.To.Mount.To..Make.. Sure.This.Block.Is.Located.On...

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    6. Install the grommets and brass eyelets into the aileron servo. Attach a 6" (152mm) servo extension, securing it with thread or a commercially available clip. Center the servo and install a long servo arm onto the servo. 7. Check to make sure you are using the correct servo hatch for the wing pane...

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    8. Position the servo onto the servo hatch with the servo arm centered in the slot. Use a felt- tipped pen to mark the locations for the servo mounting blocks. 9. Use 6-minute epoxy to glue two 3/4" x 3/8" x 3/8" (19mm x 10mm x 10mm) servo blocks to the servo hatch. Allow the epoxy to fully cure bef...

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    10. Place the servo into position between the mounting blocks. Mark the location for the servo mounting screws using a felt-tipped pen. Note :.The.Servo.Should.Not.Rest.Against.The. Hatch.To.Isolate.It.From.Vibrations. 11. Use a 1/16" (1.5mm) drill bit to drill the holes in the servo mounting blocks...

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    13. Secure the servo hatch to the wing using four 2mm x 10mm sheet metal screws. 12. Pass the servo lead from the servo opening to the hole in the root of the wing. Note :.A.Weight.Tied.To.A.String.Can.Be.. Used.First,.Then.Tied.To.The.Servo.Lead.To.. Pull.It.Through. 24.

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    14. Slide a clevis retainer onto a clevis, then thread the clevis onto a 4" (100mm) linkage wire. Thread the clevis on at least 12 turns to start. 15. Remove the backplate from a control horn. Snap the clevis to the horn and position the horn so the holes are aligned with the hinge line and the push...

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    16. Use a 5/64" (2mm) drill bit to drill the locations for the control horn screws. 17. Attach the control horn using two 2mm x 20mm screws and the control horn backplate. 26.

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    Note :.Turn.On.The.Transmitter.And.Verify.All.Trims. And.Sub-trims.Are.Centered..Next,.Plug.In.The. Aileron.Servo.And.Verify.It.Is.Centered.For.The. Following.Steps. 18. Mark the pushrod where it crosses the control horn using a felt-tipped pen. 19. Bend the pushrod wire 90 degrees at the mark made ...

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    21. Apply a thin coat of 6-minute epoxy to one side of a wing joiner. Use clamps to hold a second joiner to the first until the epoxy fully cures. 22. Once the epoxy has had time to cure, sand any excess epoxy from the joiner. Test fit the joiner into one wing panel. Sand the joiner if necessary so ...

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    23. Fit the two wing panels together using the joiner. The panels must fit together with no gaps. Sand if necessary for a perfect fit. Note :.Make.Sure.You.Are.Certain.Of.The.Fit.Of. The.Joiner.Before.Proceeding. 24. Mix up 1/2 oz (15ml) of 30-minute epoxy. Apply epoxy to both the wing joiner and th...

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    25. Use a covering iron to apply the covering to the center of the wing over the joint. Tail installation required parts • fuselage • assembled wing • 8-32 x 1 1 / 8 " screw (2) • #8 washer (2) • stabilizer w/elevators • rudder w/fin required tools and adhesives • phillips screwdriver • felt-tipped ...

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    Note :.It.May.Be.Necessary.To.Lightly.Sand.. The.Tab.At.The.Front.Of.The.Wing.To.Get.The.. Wing.To.Fit. 2. Slide the stabilizer into the slot at the rear of the fuselage. Center the stabilizer as shown. 3. Check that the wing and stabilizer are parallel. Lightly sand the opening in the fuselage if a...

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    4. Measure from each tip of the stabilizer to a point at the forward center of the fuselage. Adjust the stabilizer so both measurements are equal. " " "" 5. Once the stabilizer has been carefully aligned, use a felt-tipped pen to trace the outline of the fuselage onto the stabilizer. 32.

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    6. Mark the stabilizer so you know which is top and bottom. Remove the stabilizer and use a hobby knife with a new blade to cut the covering 1/16" (1.5mm) inside the lines drawn in the last step. Note :.Do.Not.Cut.Into.The.Wood.As.It.Will. Weaken.The.Stabilizer..A.Soldering.Iron.Or.Hot. Knife.Can.Be...

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    8. Attaching the fin is basically the same as installing the stabilizer, except for checking that the fin is perpendicular to the stabilizer using a square. Remember to mark and remove the covering from the bottom of the fin before using epoxy to secure it to the fuselage linkage installation requir...

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    1. Locate the tail wheel assembly and apply petroleum jelly to the wire above and below the nylon mount. This helps prevent epoxy from binding the tail gear. 2. Use 6-minute epoxy to glue the nylon mount into the fuselage. 35.

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    3. Drill a 3/32" (2.5mm) hole into the rudder 1 1 / 16 " (27mm) up from the bottom of the rudder. Verify this measurement by holding the rudder in position against the fuselage. 4. Cut a slot from the hole to the bottom of the rudder. The slot will house the nylon mount when the rudder is installed....

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    5. Attach the tail wheel using the 2mm wheel collar and the 3mm setscrew. 6. Slide a clevis retainer onto a clevis, then thread the clevis onto a 25 5 / 8 " (650mm) pushrod wire. Slide the pushrod wire into the opening as shown. 7. Place t-pins in three of the ca hinges. Slide the hinges into the ru...

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    8. Remove the backplate from a control horn. Snap the clevis onto the control horn, and hold it against the rudder and mark the location for the horn. 9. Remove the rudder and drill the two locations using a 5/64" (2mm) drill. Mount the horn using two 2mm x 12mm screws and the control horn backplate...

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    11. Remove the t-pins from the hinges and use thin ca to glue them in place. Allow the epoxy and ca to cure before continuing to the next step. 12. Snap the clevis onto the control horn and use tape to hold the rudder centered. Mark the pushrod where it crosses the servo horn using a felt-tipped pen...

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    13. Bend the wire at the mark. Drill a 5/64" (2mm) hole in the servo arm and secure the pushrod wire using a pushrod wire keeper. Trim the rudder servo arm as shown so it will not interfere with the operation of the elevator servo. Note :.Trim.The.Rudder.Servo.Arm.As.Shown.In. The.Photo. 14. Prepare...

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    15. Drill the holes for the control horn in the elevator. Attach the control horn using two 2mm x 12mm screws. 16. Position the elevator back onto the stabilizer and use thin ca to glue the hinges. 17. Prepare two wheel collars by threading 3mm x 6mm screws into them. Slide the wheel collars onto th...

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    18. Center the elevator and mark the pushrod. Bend the pushrod and attach it to the elevator servo arm using a pushrod wire keeper. Trim the elevator servo arm as shown in the photo. Note :.Ensure.The.Radio.Is.Turned.On.With.. The.Trims.And.Sub-trims.Centered.And.The.. Servos.Are.Centered. 19. Repea...

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    20. Use a ruler to make sure both elevator halves are centered. Once centered, tighten the screws in the wheel collars. Remember to use threadlock on those screws. Note :.Once.Set,.Coat.The.Wheel.Collars.And.Wire. With.6-minute.Epoxy. 43.

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    Final assembly required parts • fuselage • wing • front windshield • side window (right and left) • wing strut (right and left) • 2mm x 10mm sheet metal screws (6) required tools and adhesives • phillips screwdriver • hobby scissors • felt-tipped pen • sandpaper • canopy glue • masking tape 1. Place...

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    3. Apply a thin bead of canopy glue around the outer edge of the front windshield. Position the windshield on the fuselage and use tape to hold it until the glue has cured. 4. Use hobby scissors to trim out the side windows. Trim the windows so there is a 1/16" (1.5mm) lip to glue the windows to the...

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    5. After sanding the edges of the windows, use canopy glue to secure them to the inside of the fuselage. Use tape to hold them in position until the glue fully cures. 6. Attach the wing to the fuselage. Place the struts so the arrow on the strut is facing up and is pointing towards the front of the ...

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    Center of gravity / battery installation an important part of preparing the aircraft for flight is properly balancing the model. Caution: do not inadvertently skip this step! The recommended center of gravity (cg) location for the j-3 cub is 2 5 / 8 " (66mm) back from the leading edge. The range for...

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    Control throws the amount of control throw should be adjusted as closely as possible using mechanical means, rather than making large changes electronically at the radio. By moving the position of the clevis at the control horn toward the outermost hole, you will decrease the amount of control throw...

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    Flying the j-3 cub is a pleasure. Takeoffs are easy as well as landings. Loops and rolls are as easy as pushing the control stick in the desired direction with the control throws listed in the manual. Flight times of 17 minutes with the recommended li-po battery are common with landing gear, and 15 ...

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    General 1) i will not fly my model aircraft in sanctioned events, air shows or model flying demonstrations until it has been proven to be airworthy by having been previously, successfully flight tested. 2) i will not fly my model higher than approximately 400 feet within 3 miles of an airport withou...

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    3) at all flying sites a straight or curved line(s) must be established in front of which all flying takes place with the other side for spectators. Only personnel involved with flying the aircraft are allowed at or in front of the flight line. Intentional flying behind the flight line is prohibited...

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    829 © 2006 horizon hobby, inc. 4105 fieldstone road champaign, illinois 61822 (877) 504-0233 www.Horizonhobby.Com www.E-fliterc.Com.