Great-planes PT-40 MkII Kit - GPMA0118 Manuel d'utilisateur

USAMADE IN Instruction Manual™™Great Planes®Model Manufacturing Co. guarantees this kit to be free from defects in both material and workmanship at th

10DIE-CUT PATTERNS FOR PT-20

11DIE-CUT PATTERNS FOR PT-40

12Work on a flat surface over the plans covered with waxedpaper. Frequently refer to the plans to identify the parts andtheir locations.❏ 1. Locate th

❏ 3. Use the same procedure to mark the centerline on theentire length of the leading edge of the elevator.❏ 4. Cut the hinge slots in the elevator an

❏ 7. Cut the hinges for the elevator and the rudder fromthe supplied 2" x 9" hinge material, then snip off thecorners so they go into the sl

❏ 2. Examine the two fuse sides for blemishes, thenposition them on your workbench exactly as shown in thephoto with the best-looking sides facing dow

❏ 10. Notice that two pieces of the wing bolt plateassembly have grain running in one direction while the thirdpiece has grain running opposite to the

IMPORTANT: Position all of the formers with the embossednumbers facing the front of the model.❏ 1. Test fit the die-cut 1/8" plywood formers F-2

❏ 6. Test fit the die-cut 3/32" balsa rear fuse bottombetween the fuse sides. Temporarily hold the bottom inposition with a few strips of masking

❏ 14. Hold the die-cut 3/32" balsa fuse top at the edge ofyour work table, then gently “crack” the wood along the die-cut score line. Do not brea

SAFETY PRECAUTIONS ...2INTRODUCTION...3Impor

❏ 22. Locate the die-cut 1/8" plywood hatch retainer(HR). Center the hatch retainer on the bottom (unpunchedsurface) of the die-cut 1/8" ply

❏ 4. Glue in the LG blocks with 30-minute epoxy. Wedge ascrap balsa stick between the blocks to hold them inposition while the epoxy cures. For added

Note: You will need your engine for the following steps.From here on it is a good idea to plug the holes in yourengine so balsa dust cannot get in. St

❏ 11. From the other piece of outer pushrod tube, cut thenose steering guide tube. It should be flush with the frontof the firewall and extend 1/2&quo

❏ 4. Place a 5/32" wheel collar inside the nylon steeringarm and start a 6-32 x 1/4" screw into the arm and thewheel collar (see the followi

❏ 5. Check the alignment of the stab by standing 6 to 10feet behind the airplane. Crouch down until the stab TE andthe bottom of the straightedge are

fuselage and stab and mark the location of the slot in thefuselage for the balsa dorsal fin tab. Remove the fin fromthe stab and glue the dorsal fin t

❏ 3. The TOP of each LE and TE has a pen mark appliedat the factory. For clarity you may mark them yourself as“top.” The end with the notch is the TIP

❏❏7. Use thin CA for all points of contact starting withthe notches along the TE (the Hobbico applicator tips reallyhelp for this step). Press or hold

❏ 3. Without glue, test fit the CJ’s between the top andbottom spars of one wing panel. Hold the wing panelstogether with the CJ’s in position. Make s

You can also contact the national Academy of ModelAeronautics (AMA), which has more than 2,300 charteredclubs across the country. Through any one of t

❏ 6. You will need something to prop up one of your wingtips to set the correct dihedral angle (see the photo at step 16).Use the chart that follows t

❏ 1. Use epoxy to glue the front center rib 1A between theLEJ and FJ. Make sure it is equally centered in each winghalf and the front is centered on t

❏ 2. Turn the wing upside down. Position the trued edge ofone of the 1-1/2" wide sheets you just cut against theleading edge of one of the wing p

plywood washout jigs directly under each tip rib – the jigsshould stand vertically. Be certain the jigs are positionedcorrectly as noted in the photo

❏ 18. Refer to the Expert Tip that follows, then use thenarrow sheets you just cut to sheet the wing tips over the R2 tip ribs between the spar and th

❏ 26. Make two pieces from the last 2-5/8" strip to fill in thespace between the main spar and the forward bottomsheeting at each tip. Glue the p

❏ 1. Reference the cross section on the wing plan so youknow which sides of the tapered and grooved wing centertrailing edges are the top and which si

❏ 11. Use your bar sander to sand the tip TE’s flush withthe tip rib.❏ 12. While you’re working on the end of the wing, glue the3/8" x 11-7/8&quo

❏❏17. Cut a groove starting from the hole you drilled tothe inboard edge of the aileron. Hint: Use a hobby knife tosharpen the inside of one end of a

❏ 1. Glue the fiberglass cloth to the center section of thewing with thin CA. Start by tacking one end of the cloth toReinforce the WingEXPERT TIPEXPE

❏ 4-Channel radio with 3 or 4 servos;see WingConfiguration Section.❏ Engine;see Engine Selection❏ Spare Glow Plugs (O.S. #8 for 2-stroke engines,OSMG2

the top of the wing at the front of the wing bolt plate (start atthe trailing edge of the wing if you are building the rubberband-on wing). Pull the t

Several trim options are shown on the box. You mayduplicate one of these or use them as a “starting point” tocreate your own trim scheme.Modelers who

Tail Surfaces❏ 1. Tail Junction Strips as described above ❏ 2. Stab bottoms❏ 3. Stab tops*❏ 4. Fin left side, then right side❏ 5. Elevator bottom, the

❏ F. Perform the same operation for the other side of thestab and fin.Applying windows.Use the patterns on the fuse plan (or make your owntemplates) t

❏ 7. Prepare the hinge slots in the ailerons the same wayas the tail surfaces.❏ 8. Use a toothpick to pack the torque rod holes in theailerons with 30

❏ 2. Glue the die-cut 1/8" plywood servo tray doublers tothe bottom of the servo tray with medium CA.❏ 3. Wrap the battery in one layer of 1/4&qu

❏ 9. Trim the backing plate from a nylon control horn,then temporarily fasten the clevis to the second from theouter hole of the horn. Make a second p

For three channel operation the rudder servo should beplugged into the aileron plug in the receiver (channel #1 onmost receivers).Your “main steering

slow down for landing. Moving the balance aft makes themodel more agile, providing it with a lighter and snappierfeel. Please start at the location we

❏ 3. Snap a nylon Faslink™onto both pushrods and cut offthe excess wire 1/16" above the Faslink. Caution: Wearsafety glasses whenever you cut wir

❏ 4-Channel Radio with 3 or 4 Servos;see the Wing Configuration section❏ Engine;see Engine Selection❏ Spare Glow Plugs (O.S. #8 for most 2-stroke engi

Position the receiver where it was when you balanced themodel, then glue a scrap piece of plywood to the fuselagesides over the receiver to hold it in

❏ 21. Make Z-bends in the pushrods, then cut off theexcess pushrod material. Fit the pushrods through the topof the servo wheel and make a slight bend

❏ 3. Check the direction of all control functions. They mustall move in the direction shown in the following sketches. Ifnot, change the position of t

Control throw adjustment: If you move the clevis at thecontrol horn on the control surface toward the outermosthole, you will decrease the amount of t

❏ 3. When everything is aligned and the model is sittingcorrectly, tighten the screw on the steering arm tightenough to leave a mark on the nose gear

Get help from an experienced pilot when learning tooperate engines. Use safety glasses when starting orrunning engines. Do not run the engine in an ar

Start the engine and set the throttle trim for a slow, steadyidle. Have your instructor or a helper hold the plane whileyou work the controls. Upon re

The most common mistake when learning to fly is “overcontrol.” Think of pressure instead of large movements ofthe control sticks. Remember all PT’s wi

Buddy Box – Two similar transmitters that are wiredtogether with a “trainer cord.” This is most useful whenlearning to fly – it’s the same as having d

Frequency Control – The FCC has allowed the 72MHzband to be used for R/C aircraft operations. This band isdivided up into many different channels in w

they'll need to do the best job possible. In some instances itmay not be clear exactly what the optional item is used forso, where appropriate, w

Roll Axis – The airplane axis controlled by the ailerons.Roll is illustrated by holding the airplane by the nose andtail. Dropping either wingtip is t

APPENDIXFLIGHT TRIMMINGNote:The following article has been reprinted in part for futurereference and also as a guide for your flight instructor or exp

TRIM FEATURE MANEUVERSOBSERVATIONS CORRECTIONSCONTROLCENTERINGCONTROLTHROWSENGINETHRUSTANGLE1CENTER OFGRAVITYLONGITUDINALBALANCEYAW2LATERALBALANCEAILE

63PLANE KITS & ACCESSORIES FROM GREAT PLANESEasy Sport™40...GPMA0150Move up from trainers

TWO-VIEW DRAWINGPhotocopy this two-view drawing and use the copy to plan your trim scheme

• There are two types of screws used in this kit:Sheet metal screws are designated by a number and a length.For example #4 x 5/8".Machine screws

Accelerator is a liquid chemical foruse in speeding up the cure time ofall CA types. It should be misted on,not sprayed heavily on the joint. Atypical

6-Minute epoxy is used for simple,small gluing operations whereelaborate alignment is not required.Working time (before it's too gooeyto use) is