GREAT PLANES Ultra-Sport 40 ARF Instruction Manual
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GREAT PLANES Ultra-Sport 40 ARF Instruction Manual

Arf series
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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, they
are advised to return this kit immediately in new and unused condition to the place of purchase.
READ THROUGH THIS INSTRUCTION MANUAL
FIRST. IT CONTAINS IMPORTANT INSTRUCTIONS
AND WARNINGS CONCERNING THE ASSEMBLY
AND USE OF THIS MODEL.
GPMA1010 V1.2
Almost Ready-to-Fly

Instruction Manual

WARRANTY
P.O. BOX 788 URBANA, ILLINOIS 61801 (217) 398-8970
ENTIRE CONTENTS © Copyright 1993

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Summary of Contents for GREAT PLANES Ultra-Sport 40 ARF

  • 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

    TABLE OF CONTENTS INTRODUCTION..........3 PRE FLIGHT..........26 PRECAUTIONS..........3 EXPLODED VIEW .......... 4 ITEMS REQUIRED......... DIE-CUT PARTS..........FLYING............26 AMA SAFETY CODE........27 WING ASSEMBLY.......... 6 CENTER RIBS (OPTION A)......6 WING JOINERS (OPTION A)......6 CENTER RIBS (OPTION B) ......7 FLIGHT TRIMMING........

  • Page 3: Introduction

    IMPORTANT - Glue should never be substituted of a good basic trainer such as the Great Planes PT for a good-fitting joint. Take a little extra time to get a Series airplanes. On the other hand, if you are confident good-fitting joint and glue it properly.

  • Page 4: Exploded View

    Part# Description Quantity 41........Aluminum Tube..........:2 1........Fuselage .............1 42........Fuel Tubing ..........1 2........Wing Right & Left ........2 43........6-32 x 3/4" Machine Screw ......4 3........Horizontal Stabilizer & Elevator....1 44........Main Landing Gear Strut (R) .......1 4........Vertical Stabilizer........1 45........Tank Plug 3 x 18mm S/T Screw....1 5........

  • Page 5: Die-Cut Parts

    Die-Cut Parts Plastic Sheet 1/8" (3mm) Plywood Sheet Wheel Well Wing Wing Wing Cover Mounting Mounting Mounting Plate Plate Plate Front Wing Joiner Top Edge Wheel Well Cover (Angle) Mount Mount Cover Cover Plastic Sheet Stabilizer Platform Servo Servo Tray Tray Mount Mount...

  • Page 6: Wing Assembly

    Glue the Center Rib on the Wing Center Ribs and Wing Joiners Fixed Gear (Option A) (Skip Steps 1-6 Option A if retracts are to be installed.) (Continue on page 7.) Remove the Foam Covering 3. Trial fit the center ribs on both wing halves, the ribs should not protrude beyond the outer covering of the wing.

  • Page 7: Center Ribs (Option B)

    Join the Wing 2. Remove the precut area from the front center rib before gluing. Carefully glue the plywood center ribs and wing joiner together using 6-minute epoxy. The plywood joiner has a slight angle on one edge. Place these angles adjacent with each other.

  • Page 8: Fixed Gear Assembly (Option A)

    Glue the Wing Joiners Landing Gear Assembly Fixed Gear (Option A) Wing (Skip Steps 1-11 Option A if retracts are being installed.) Bottom (Continue on page 10.) Wing Joiner Assemble the Fixed Landing Gear 1. Place the landing gear mounting block between the U-bend on the top portion of the main landing gear strut.
  • Page 9 Install the Gear into the Wing Mount the Wing Bolt Plates 4. Place the landing gear into position in the wing. Locate the plastic landing gear mount covers and glue 7. Using 6-minute epoxy, glue the plywood wing bolt them to the plywood mounting plates with thick CA. Trim plates to the bottom of the wing aligned with the trailing edge.

  • Page 10: Retracts (Option B)

    Mark the Retract Glue the Fairing to the Wing 10. Use thick CA+ to glue the top fairing to the top of the wing. Remove the plastic that is covering the wing dowel hole on the leading edge of the wing. Proceed to 2.
  • Page 11 Install the Retract Servo Mount the Wing Bolt Plates Retract Servo Tray Servo Tray Mounting Blocks Wing Cross Section 9. Using 6-minute epoxy, glue the plywood wing bolt plates to the bottom of the wing aligned with the trailing edge. Prepare the Wing Fairing 6.

  • Page 12: Aileron Assembly

    Glue the Fairing onto the Wing Mount the Aileron Servo 12. Use thick CA+ to glue the top fairing to the top of the wing. Remove the plastic that is covering the wing 2. Mount the aileron servo in the servo tray using the dowel hole on the leading edge of the wing.

  • Page 13: Fuselage Assembly

    Mount the Engine Engine Installation (2-stroke Engine.) Install the Engine Mount 3. Put a drop of oil in each hole and install the engine using the four #6 x 3/4" sheet metal screws provided. Engine Installation 1. Fasten the adjustable engine mount to the firewall (4-stroke Engine.) using four 6-32 x 3/4"...

  • Page 14: Mount The Wing

    Mount the Wing Install the Wing Mounting Plate Mount the Wing 3. Install the wing mounting plate into the cut-outs in the sides of the fuselage. The tabs created by the two longest plates fit into the notch in the lightening holes in both sides of the fuselage.

  • Page 15: Horizontal Stabilizer

    Cut-out the Wing Dowel Hole Prepare to Install the Stabilizer Align Vertical Stabilizer Trailing Edge with Aft Edge of Fuselage Aligned Adjust Horizontal Stabilizer Forward or Aft Note: When mounting the horizontal stabilizer do not slide 6. Trim away the plastic that covers the wing dowel hole the stabilizer fully forward in the saddle.

  • Page 16: Vertical Stabilizer

    Attach the Horizontal Stabilizer Install the Vertical Stab Fairinq 2. Locate the plastic vertical stabilizer fairing and lightly sand the underneath side of the fairing. Slide the fairing over the vertical stab and lightly trace its outline onto the 3. Mix 30-minute epoxy to securely glue the horizontal fuselage.

  • Page 17: Gluing The Hinges

    Install the Spacers Gluing the Hinges Check the Control Surfaces 1. Check each of the ailerons and the elevator to be sure that they are secure. If any of them seem loose, apply 2. Locate and glue the two aluminum spacers into the a few drops of thin CA glue to both sides of the hinge as bottom tail section of the fuselage.

  • Page 18: Stabilizer Support Braces

    ASSEMBLE, THEN APPLY 6 DROPS OF THIN CA TO CENTER OF HINGE, ON BOTH SIDES 3. Drill a 3/32" hole, 1/2" deep, in the center of the hinge 6. After the epoxy cures, apply 6 drops of thin CA to slot.

  • Page 19: Radio Installation

    Stabilizer Brace Positioning Mount the Switch and Servos 1. Install the switch into the precut hole in the servo tray. A piece of wire can be used to access the switch from Brace Attachment Detail the exterior of the plane similar to the one illustrated in the photograph.

  • Page 20: Pushrods

    Pushrods fuselage formers next to the pushrod guide tubes. Note: The pushrod guide tubes are intentionally installed so the tube exits the fuselage on the opposite sides of the Assemble the Pushrods controlling servo. They cross inside the fuselage allowing the pushrods to run nearly straight, from the servos to the control horns, for maximum rigidity.

  • Page 21: Control Surface Linkage

    Control Surface Linkage indentation in the foam covering, but do not crush the foam covering. Attach the clevises to the control horns. Secure the linkages by sliding 1/4" of silicone retaining collar over the clevis arms. Mount the Control Horn Connect the Pushrods to the Servos 1.

  • Page 22: Receiver Installation

    the carburetor on the four cycle is turned around. A new Receiver Installation hole may need to be drilled if your engine throttle linkage requires a different setup. Trial fit the throttle pushrod Install Receiver and Battery guide tube. There should be 1/2" of tube protruding from the firewall and less than 1/8"...

  • Page 23: Fuel Tank

    Final Assembly the covering. Note: A partial servo horn arm should be used to relieve tension on the antenna right before it exits the fuselage behind the pilot. Use a medium T-pin to attach a small rubber band to the top portion of the vertical stabilizer.

  • Page 24: Install The Muffler

    Mount the Prop and Spinner Mount the Cowling 4. Place the spinner backplate onto the engine shaft 1. Trial fit the cowling into place on the fuselage and followed by the propeller. Secure the propeller in place with mark the cowl where it interferes with the needle valve and the engine driver washer.

  • Page 25: Control Throws

    Canopy Installation Balance the Airplane Laterally SPECIAL NOTE: Do not confuse this procedure with "checking the C.G." or "balancing the airplane fore and aft." That very important step will be covered next in the manual. 1. With the wing level, lift the model by the engine propeller shaft and at the centerline of the fin (this may require two people).

  • Page 26: Pre Flight

    100 feet away from the model and still have control. Have someone help you. Have them stand by your The Great Planes Ultra-Sport ARF is a great flying model and, while you work the controls, tell you what the airplane that flies smoothly and predictably, yet is highly various control surfaces are doing.

  • Page 27: Ama Safety Code

    TAKEOFF: If you have dual rates on your transmitter, set the switches to "high rate" for takeoff, especially when taking off in a cross wind. Although the Ultra-Sport ARF has good low speed characteristics, you should always build up as much speed as your runway will permit before lifting off, as this will give you a safety margin in case of a Read and abide by the Academy of Model Aeronautics "flame-out."...
  • Page 28 If you can handle a sport model with ailerons, you can enjoy the jet Enjoy thrilling maneuverability and dramatic WWII fighter styling in experience flying the Great Planes Patriot 40 Custom ARF. The 90% an ARF design. The Great Planes P-51D Mustang ARF is 90% prebuilt Patriot is Grafted with an interlocking wood structure, prebuilt with all wood construction.

  • Page 29: Flight Trimming

    Reprinted in part by Great Planes Model Manufacturing Company, Do each maneuver several times, to make sure that you are getting courtesy of Scale R/C Modeler magazine, Pat Potega, Editor, August 1983 a proper diagnosis.
  • Page 30 TRIM FEATURE MANEUVERS OBSERVATIONS CORRECTIONS CONTROL Fly general circles and Try for hands off straight and Readjust linkages so that CENTERING random maneuvers, level flight. Tx trims are centered. CONTROL Random maneuvers A. Too sensitive, jerky If A, change linkages to THROWS controls, reduce throws.

  • Page 31: Templates & Gauges

    RUDDER THROW GAUGE Ultra-Sport 40 ARF HINGE LINE AILERON THROW GAUGE Ultra-Sport 40 ARF HINGE LINE ELEVATOR THROW GAUGE DRILL 3/32" PILOT HOLES (8 PLACES) Ultra-Sport 40 ARF HINGE LINE MAIN LANDING GEAR DRILL TEMPLATE...

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