GREAT PLANES Ju-87 Stuka Instruction Manual
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GREAT PLANES Ju-87 Stuka Instruction Manual

GREAT PLANES Ju-87 Stuka Instruction Manual

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A. R. F.
Almost Ready to Fly
Wingspan: 70" [1780mm]
Wing area: 770 sq in [49.6 dm
Weight: 8 lbs [3630g]
Wing loading: 24 oz/sq ft [73 g/dm
Length: 55" [1400mm]
Radio: 4–7 ch (w/5–7 standard servos)
Engine: .61–75 cu. in. two-stroke [10–12.5cc]
.91 cu. in. four-stroke [15cc]
Great Planes
®
Model Manufacturing Co. guarantees this kit to be free from defects in both material and workmanship at the date of
purchase. This warranty does not cover any component parts damaged by use or modification. In no case shall Great Planes' liability
exceed the original cost of the purchased kit. Further, Great Planes reserves the right to change or modify this warranty without notice.
In that Great Planes has no control over the final assembly or material used for final assembly, no liability shall be assumed nor
accepted for any damage resulting from the use by the user of the final user-assembled product. By the act of using the user-assembled
product, the user accepts all resulting liability.
If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is advised to return this
kit immediately in new and unused condition to the place of purchase.
READ THROUGH THIS MANUAL BEFORE
STARTING CONSTRUCTION. IT CONTAINS
IMPORTANT WARNINGS AND INSTRUCTIONS
CONCERNING THE ASSEMBLY AND USE OF
THIS MODEL.
© Copyright 2001

INSTRUCTION MANUAL

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WARRANTY
1610 Interstate Drive Champaign, IL 61822
(217) 398-8970, Ext 2
airsupport@greatplanes.com
GPMZ0275 for GPMA1340 V1.0

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  • Page 1: Instruction Manual

    Further, Great Planes reserves the right to change or modify this warranty without notice. In that Great Planes has no control over the final assembly or material used for final assembly, no liability shall be assumed nor accepted for any damage resulting from the use by the user of the final user-assembled product.

  • Page 2: Table Of Contents

    Stuka, visit the web site listed below and select the recommend that you get the assistance of an experienced Great Planes Stuka ARF. A “tech notice” box will appear in the upper left corner of the page if there is new technical pilot in your R/C club for your first flights.

  • Page 3: Decisions You Must Make

    Drill bits used: 1/16", 17/64" (or 1/4"), #48 (or 5/64"), #29 provided in parentheses. (or 9/64") drill and 6-32 tap Great Planes 8-32 tap and drill set (GPMR8103) Curved Tip Canopy Scissors for trimming plastic parts Engine – O.S. ®...

  • Page 4: Important Building Notes

    ORDERING REPLACEMENT PARTS To order replacement parts for the Great Planes Stuka ARF, use the order numbers in the Replacement Parts List that follows. Replacement parts are available only as listed. Not all parts are available separately (an aileron cannot be purchased separately, but is only available with the wing kit).

  • Page 5: Kit Contents

    If any parts are missing or are not of acceptable quality, or if you need assistance with assembly, contact Great Planes Product Support. When reporting defective or missing parts, use the part names exactly as they are written in the Kit Contents list on this page.

  • Page 6: Wing Assembly

    WING ASSEMBLY 2. Locate the right wing panel and the right inner wing panel. At the root of each wing panel where the two panels join are two strings. Tie the strings together. The strings will be used for pulling the servo wires through the wing when the radio installation takes place.
  • Page 7 ample glue to coat the wing box where the joiner goes into it) and apply epoxy to both wing ribs. 9. After each hinge has been lubricated, glue each hinge into the pre-drilled holes in the aileron and both flaps with 6-minute epoxy.
  • Page 8 12. On the outboard end of the inner flap draw a line 1-1/4" [31mm] from the trailing edge of the inner flap. On this line mark the center of the flap and carefully drill a 1/8" [3mm] hole on this mark into the flap 9/16" [14.3mm], 15.
  • Page 9 17. Insert the 2.5 x 25mm steel pin into the brass tube you installed in the inner flap. Position the inner flap with the steel pin so that the steel pin is resting on top of the flap. Draw a line on each side of the steel pin onto the flap. 21.
  • Page 10 23. On the bottom of the wing, cut away the covering from the two servo bays and the landing gear mounting rails. 26. Locate the plywood center wing joiner. Test fit it into the right and left wing halves. When fitting it into the wing, make sure that the joiner angles downward.
  • Page 11 28. After the glue has cured, cut away the covering on the 31. Cut away a 1/2" [13mm] strip of covering inside each top and bottom of the wing at the trailing edge of the wing to of the lines you have drawn. Be careful not to cut into the expose the two holes for the nylon wing bolts to pass surface of the wing sheeting.

  • Page 12: Fuselage Assembly

    34. Glue the wing fairing in place on the wing with 4. Measure from the end of the stab to each wing tip and 6-minute epoxy. from the center of the fuselage out to the end of the stab as shown in the sketch.
  • Page 13 How to cut covering from balsa. Use a soldering iron to cut the covering from the stab. The tip of the soldering iron doesn’t have to be sharp, but a fine tip does work best. Allow the iron to heat fully. Use a straightedge to guide the soldering iron at a rate that will just melt the covering and not burn into the wood.

  • Page 14: Install The Hinges

    INSTALL THE HINGES 4. Install a pin into the center of three hinges, then install one hinge in each of the slots in one of the elevator halves. Install the hinge until the pin is touching the leading edge of the elevator.
  • Page 15 8. Drill a 5/32" [4mm] hole in the leading edge of the 11. Cut a slot in the end of the fuselage from the mark you elevator 1/2" [13mm] deep at the 1" [25mm] mark. made to the bottom of the fuselage. Insert the nylon bearing into the slot.

  • Page 16: Install The Engine

    4. Once you have the engine properly positioned on the engine mount, mark the location of the engine mounting holes on the rails of the engine mount. A great tool for doing this is the Great Planes Dead Center ™ Tool (GPMR8130). It’s 1.
  • Page 17 2. Install four nylon landing gear straps to hold the 5. Slide the wheel and axle onto the landing gear wire. landing gear wire to the wing. Position the nylon straps using Position the axle and wheel as shown. Position the wheel the dimensions shown in the photograph.

  • Page 18: Install The Fuel Tank

    wire for the set screw to tighten onto. This flat spot will also 3. Install the fuel tank into the fuselage. Apply silicone prevent the axle from slipping on the landing gear wire. File sealant to the front of the tank to hold it to the firewall. Feed a flat spot on the axle for the wheel collar too.
  • Page 19 5. Repeat step 4 for the other half of the elevator. 3. Attach the clevis to the control horn and slide the clevis retainer onto the clevis. 6. Drill a 3/16" [5mm] hole in firewall. This hole should be in close alignment to the carburetor. Locate the 12" [305mm] long gray plastic outer pushrod.
  • Page 20 8. Inside the fuselage locate the two elevator pushrods. The pushrod closest to the center of the fuselage needs to be cut. Cut the pushrod wire 2-1/4" [57mm] from the end of the plastic outer pushrod tube. 11. Following the manufacturer’s instructions for your radio system, install the rubber grommets and eyelets onto three servos.

  • Page 21: Install The Flap & Aileron Servos

    bend upward in the wire. Cut the excess wire off 1/2" [13mm] above the bend. Insert the wire through the hole in the servo arm and secure it with a nylon FasLink. Do this for the throttle and the rudder as well. 3.
  • Page 22 to the aileron. This line must be parallel to the top of make a mark on the pushrod wire at the point that it is over the servo. the hole in the servo horn. Important: Be sure that the servo has remained centered as you have handled the servo.
  • Page 23 13. Cut out the ABS servo cover as shown. Drill a 1/16" 11. (Important: Before starting step 11, be sure the [1.5mm] hole in each corner of the cover. servo is properly centered. If you have any doubt, re-center the Servo.) Leave the pushrod wire attached to the servo horn and the control horn.

  • Page 24: Install The Radio System

    17. Attach a 6" servo extension to the flap servo. Apply 21. Locate one of the 2-56 x 6" [152mm] wire pushrods. tape or a piece of heat shrink tubing to the connection to be Install a nylon clevis and clevis retainer onto the threaded sure that the extension cannot come unplugged from the end of the wire.

  • Page 25: Install The Cowl

    manufacturer’s instructions to determine the best way to connect the flaps and ailerons. 2. Lay a piece of foam rubber in the bottom of the fuselage just ahead of the servo tray. Install the receiver and battery on the foam. 5.

  • Page 26: Finish & Install The Canopy

    2. Drill four 3/32" [2.4mm] hole through the cowl and the 6. Finish the final installation of the cowl by adding one fuselage. Enlarge the holes in the cowl only with a 1/8" additional #4 x 3/8" [9.5mm] machine screw in the middle of [3mm] drill.

  • Page 27: Apply The Decals

    (about a teaspoon of soap per gallon of water) and peel the decal from the backing. Lay the Use a Great Planes AccuThrow ™ (or a ruler) to accurately decal on the model and position it exactly where you want it.

  • Page 28: Balance The Model (C.g.)

    “spinner weight” (GPMQ4645 for the 1 oz. weight, or GPMQ4646 for the 2 oz. weight). If spinner weight is not practical or is not enough, use Great Planes (GPMQ4485) “stick-on” lead. A good place to add stick-on Balance the Model (G.G.)

  • Page 29: Preflight

    We use a Top Flite Precision Magnetic Prop Balancer ™ PREFLIGHT (TOPQ5700) in the workshop and keep a Great Planes Fingertip Prop Balancer (GPMQ5000) in our flight box. Identify Your Model Ground Check No matter if you fly at an AMA sanctioned R/C club site or if If the engine is new, follow the engine manufacturer’s...

  • Page 30: Ama Safety Code (Excerpt)

    Keep these items away from the prop: loose clothing, shirt 3. I will perform my initial turn after takeoff away from the pit sleeves, ties, scarfs, long hair or loose objects such as or spectator areas, and I will not thereafter fly over pit or pencils or screwdrivers that may fall out of shirt or jacket spectator areas, unless beyond my control.

  • Page 31: Flying

    tape, heat shrink tubing or special clips suitable for that CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If, while purpose. flying, you notice any unusual sounds, such as a low-pitched “buzz,” this may indicate control surface flutter . Because flutter 13.

  • Page 32: Landing

    Continue to fly around, executing various maneuvers and maintain heading), remember to throttle back at the top, and making mental notes (or having your assistant write them make certain you are on the desired rates (high/low rates). down) of what trim or C.G. changes may be required to fine A flight plan greatly reduces the chances of crashing your tune the model so it flies the way you like.

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