GREAT PLANES PT-17 Stearman Instruction Manual
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GREAT PLANES PT-17 Stearman Instruction Manual

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Wingspan: Top Wing: 71.5 in [1815mm]
Bottom Wing: 69 in [1755mm]
Wing Area: Top WIng: 762 sq in [49.1 dm
Bottom Wing: 704 sq in [45.4 dm
Weight: 14.5 – 15.5 lb [6580 – 7030 g]
Wing Loading: 23 – 24 oz/sq ft [69-74 g/dm
Length: 57 in [1450mm]
Radio: 4-channel with 5 servos
Engine:
.91-1.08 cu in [15-17.5cc] two-stroke,
.91-1.20 cu in [19.5-23cc] four-stroke
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.
To make a warranty claim, send the defective part or item to Hobby Services at this address.
Include a letter stating your name, return shipping address, as much contact information as possible (daytime telephone number, fax number, e-mail
address), a detailed description of the problem and a photocopy of the purchase receipt. Upon receipt of the package the problem will be evaluated as
quickly as possible.
READ
THIS
MANUAL
CONSTRUCTION.
INSTRUCTIONS AND WARNINGS CONCERNING
THE ASSEMBLY AND USE OF THIS MODEL.
GPMZ0198 for GPMA1349 V1.0

INSTRUCTION MANUAL

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2
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3002 N. Apollo Dr., Suite 1
BEFORE
IT
CONTAINS
WARRANTY
Hobby Services
Champaign, IL 61822
USA
STARTING
IMPORTANT
Champaign, IL
(217) 398-8970, Ext. 5
airsupport@greatplanes.com
Entire Contents © Copyright 2005

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Summary of Contents for GREAT PLANES PT-17 Stearman

  • 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

    Hardware & Accessories ..........3 technical updates or manual corrections to the PT-17 Adhesives & Building Supplies ........3 Military Stearman ARF, visit the Great Planes web site at Optional Supplies & Tools ..........4 www.greatplanes.com . Open the “Airplanes” link, then IMPORTANT BUILDING NOTES........4 select the PT-17 Military Stearman ARF.

  • Page 3: Additional Items Required

    “short list” of the most important items required to Remember: Take your time and follow the instructions to build the PT-17 Military Stearman ARF. Great Planes Pro ™ end up with a well-built model that is straight and true.

  • Page 4: Optional Supplies & Tools

    assembly without using any glue, then slightly modify Flat black fuelproof paint (for cockpit) or custom fit the part as necessary for the best fit. 8-32 Tap (GPMR8103) 8-32 Tap Handle (GPMR8120) • Whenever the term glue is written you should rely upon your experience to decide what type of glue to use.

  • Page 5: Kit Inspection

    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: Metric Conversions

    If you have never worked with fiberglass there are a few To locate a hobby dealer, visit the Great Planes web site at basic things you should be aware of. www.greatplanes.com . Choose “Where to Buy” at the bottom of the menu on the left side of the page.

  • Page 7: Preparations

    PREPARATIONS 1. If you have not done so already, remove the major parts of the kit from the box and inspect for damage. If any parts are damaged or missing, contact Product Support at the address or telephone number listed in the “Kit Inspection”...

  • Page 8: Install The Aileron Servos & Pushrods

    5. After the glue has cured, test fit the angled wing joiner into the bottom wing panels and the straight wing joiner into the top wing panels. Sand the joiners as needed to get a good fit. 6. When you are satisfied with the fit of the joiners, glue the angled joiner into the bottom wing panels with 30-minute epoxy.
  • Page 9 2. Tie the string to the servo extension. At the root of 4. Place a nylon clevis in line with the last hole in the the wing the other end of the string is taped. Pull the string servo arm. When positioned properly the control horn will and the servo lead through the wing.
  • Page 10 blade and refer the “ Expert Tip” that follows to cut the covering inside the lines you have drawn. Use caution not to cut through the surface of the wing skin. Remove the covering. HOW TO CUT COVERING FROM BALSA 7.

  • Page 11: Build The Fuselage

    Install the Stab, Elevator, Fin & Rudder BUILD THE FUSELAGE 1. Temporarily attach the lower wing to the fuselage with the 1/4-20 nylon bolts. Slide the horizontal stabilizer into the slot in Preparations the fuselage. Stand back and look at the stab in relation to the wing.
  • Page 12 7. Test fit the fin into the fuselage. Check to be sure the fin is perpendicular to the stab. If it is not, sand the side of the fin to make minor adjustments. Once you are satisfied with the fit, glue the fin to the fuselage with epoxy. 8.

  • Page 13: Attach The Wing & Cabanes

    out the slots if it is too tight. Once satisfied with the fit, then fit the rudder to the fin and fuselage. Make any remove the wire from the slots. Apply a couple of drops of adjustments that may be needed to the slot in the rudder. oil to the wire where it passes through the nylon bearings.
  • Page 14 holes. Note: 4-40 Blind nuts have been installed in the wing for all of the cabane mounting bolts. All of the blind nuts are glued into the wing and have a small wood plate backing them up. It is possible that a blind nut could have a bit of glue in the threads.

  • Page 15: Build The Carry Handle

    10. Install the four remaining brackets in the blind nuts at Build the Carry Handle the ends of the wing. This kit comes with a convenient carrying handle for the 11. Place the top wing onto the “N” struts. Attach the top fuselage and the struts.
  • Page 16 4. Glue the two parts shown onto one of the plywood 7. On the remaining handle part, install a 4-40 blind nut carrying handle parts. into each of the corner holes. 8. Place the two “N” struts into the handle. Put the handle top onto the part of the handle holding the struts and place the completed handle on top of the cabanes.

  • Page 17: Install The Engine & Throttle Servo

    2. Position the engine on the mount so the distance from the firewall to the front of the thrust washer measures 6-1/4" [159mm]. Mark the location of the engine on the mount. The Great Planes Dead Center ™ Hole Locator (GPMR8130) works well for this.

  • Page 18: Install The Cowl & Dummy Radial Engine

    8. Attach the pushrod wire to the throttle arm with a brass screw-lock pushrod connector, nylon retainer ring and a 4-40 x 1/4" [6.4mm] socket head cap screw. Install the Cowl & Dummy Radial Engine 3. On the front of the dummy radial engine draw a circle approximately 1/16"...
  • Page 19 7. Insert an aluminum tube into each of the holes. 5. Slide the cowl over the engine followed by the dummy radial engine. Note: Position the dummy radial engine so that the top of the elongated shape of the front of the cowl is at the twelve o’clock position.
  • Page 20 11. Apply a mixture of microballoons and 6-minute epoxy to the inside of the cowl and dummy radial engine. This will securely attach the two parts. 12. Apply a piece of masking tape to the fuselage in line 9. Drill a 1/16" [1.6mm] hole in the center of the cylinder with the cowl mounting blocks.

  • Page 21: Install The Fuel Tank

    location for you to easily add the weight that most likely will be needed. 14. Make any additional needed cut outs in the cowl for the muffler, glow driver, needle valve, etc. Install the Fuel Tank 1. Assemble the fuel tank as shown in the sketch. When tightening the center screw be sure not to overtighten it.

  • Page 22: Install The Wheels

    7. Attach the box to the hardwood blocks. Secure the top of the box with two #2 x 3/8" [9.5mm] screws and a two #2 washers. Fuelproof the box and rails. 3. Fit the box cover to the box. Drill a 1/16" [1.6mm] hole at the locations shown.

  • Page 23: Install The Radio System

    5. Slide the wheel onto the axle with the flat wheel cover to the inside. Screw a 6-32 x 1/4" [6.4mm] socket head cap screw into a 3/16" [4.8mm] wheel collar. Slide the wheel collar onto the axle and then tighten the screw against the flat spot on the axle.
  • Page 24 last hole in the servo arm make a mark. Bend the wire 90 degrees on that mark. Install a nylon FasLink and cut off the excess wire the same as was done with the throttle servo. 3. On the right side of the fuselage, slide one wire into the opening closest to the back of the fuselage.
  • Page 25 be mounted with four #2 x 3/8" [9.5mm] sheet metal screws and #2 washers. Do not install the tray at this time. 9. Measure down 2-1/4" [57mm] from the top of the 11. On one side of the tray, place 1/4" [6.4mm] foam fuselage former and make a line on the former.

  • Page 26: Finishing Touches

    14. Install the tray as shown and secure it to the rails with the #2 x 3/8" [9.5mm] sheet metal screws and #2 washers. Plug your servos and battery into the receiver. Route the receiver antenna into the antenna tube located under the servo tray.
  • Page 27 reasonably scale appearance without the hassles typically associated with flying wires. Because they are made from elastic there is no need to tension them each time you put the plane together. These wires will add approximately two minutes to the overall assembly time of the plane at the flying field.
  • Page 28 7. At this point you will have to start stretching the 10. Bring the elastic cord around the top of the elastic to complete the positioning of the elastic cord. Pull forward strut and pull it back toward the fuselage. Glue the the cord around the tailwheel wire, then thread the cord cord into the hole next to the hole you started with.

  • Page 29: Apply The Decals

    14. This completes the wires for the right side. Repeat steps 1-13 for the opposite side. 15. Make a mark identifying the top center of the fuselage. Mark four holes as shown. Drill partially into the fuselage with a 5/64" [2mm] drill on each of the four marks. 16.

  • Page 30: Get The Model Ready To Fly

    Apply the rest of the decals the same way. GET THE MODEL READY TO FLY Use a Great Planes AccuThrow (or a ruler) to accurately Check the Control Directions measure and set the control throw of each control surface as indicated in the chart that follows.

  • Page 31: Balance The Model (C.g.)

    Earlier you installed a box to hold lead. Remove the spinner and cowl. Remove the cover from the box and install lead. Great Planes (GPMQ4485) “stick-on” lead works well. All of our prototypes had an O.S. ®...

  • Page 32: Balance The Propellers

    ™ Keep your face and body as well as all spectators away from the (TOPQ5700) in the workshop and keep a Great Planes plane of rotation of the propeller as you start and run the engine. Fingertip Prop Balancer (GPMQ5000) in our flight box.

  • Page 33: Imaa Safety Code (Excerpts)

    GENERAL Section 3.0: SAFETY CHECK 3.4 Flight Testing: All Giant-Scale R/C aircraft are to have 1. I will not fly my model aircraft in sanctioned events, air been flight-tested and flight trimmed with a minimum of six shows, or model flying demonstrations until it has been flights before the model is allowed to fly at an IMAA proven to be airworthy by having been previously Sanctioned event.

  • Page 34: Flying

    9. Reinforce holes for wood screws with thin CA where CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If, appropriate (servo mounting screws, cowl mounting while flying, you notice an alarming or unusual sound screws, etc.). such as a low-pitched “buzz,” this may indicate control 10.

  • Page 35: Landing

    Mind your fuel level, but use this first flight to become familiar with your model before landing. Great Planes Giant Super Chipmunk 1.20 ARF Art Scholl performed airshow magic with his Super Chipmunk for over 25 years. And with the help of Great Landing Planes’...
  • Page 36 BUILDING NOTES Kit Purchased Date: _______________________ Date Construction Finished: _________________ Where Purchased:_________________________ Finished Weight: __________________________ Date Construction Started: __________________ Date of First Flight: ________________________ FLIGHT LOG...

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