Great-planes Giant Extra 330L Kit - GPMA0250 User Manual

WARRANTYGreat Planes Model Manufacturing Co. guarantees this kit to be free from defects in both material and workmanshipat the date of purchase. This

❏❏4. Carefully punch out the four die-cut 1/8" balsa stabwebs (SLE, SMW, STE, and ELE), laser-cut 1/8" ply stabrib S1, die-cut 1/8" ply

❏❏16. Use a sanding block to shape the LE web so it alignswith the tops of the ribs and the shape of the airfoil as shownin the sketch. Be careful not

❏❏22. Using a 7/64" drill bit, drill a hole 1/2" inboard of R4and centered on the tube, all the way through the stab tubesocket, tube suppor

❏❏5. Place the S10 rib onto the elevator LE web. Place thedie-cut 1/8" balsa counterbalance web (CB) into thenotches in the front of S9 and S10.

❏❏16. Select the 9/16" x 1-3/8" x 2-3/4" balsacounterbalance leading edge and glue it centered on theleading edge of the counterbalance

Build the Fin❏ 1. Cut the Fin plan from the plan sheet. Cover it with GreatPlanes Plan Protector so the glue won’t stick to the plan.❏ 2. Select the t

❏ 10. Position the first fin sheet flush against the fin postand the TE of the ribs, with the lower edge overhanging ribV1 slightly. Glue the sheet to

Build the Rudder❏ 1. Select the two rudder sheets you made earlier. Trim thefirst sheet to size, using the 1" dashed lines on the plan asa refere

❏ 10. From a 3/8" x 1-5/8" x 24" balsa stick, cut one 18-3/4"long rudder LE. From the 3/8" x 5/8" x 9" balsa stick

❏ 2. From a 1/4" x 1/4" x 6" balsa stick, cut eight 1/2" longblocks and glue four of them onto one side of each jig,aligning with

SAFETY PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . . . 2INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3DECISIONS

❏❏10. Position the remaining 13 ribs in place on the mainweb and spar. NOTE: If you happen to crack or break oneof the ribs during installation, simpl

❏❏22. Position the main center sheet flush against the LEsheet and the outboard edge of R3. Trim the center sheetwith the center line of the aileron s

❏❏32. Glue the bottom leading edge sheeting in place thesame as the top.❏❏33. Install the bottom TE and aileron spars.❏❏34. Make and glue the center s

❏❏40. Use two 3/32" x 3/8" x 36" sticks to cap strip thebottom of the wing from the LE sheet to TE sheet only.❏❏41. Trim everything flu

❏❏48. Sand the TE of the aileron sheet to the shape of theribs, as shown above. Hint: Blocking up the leading edge ofthe wing so that the bottom ailer

❏❏59. Shape the leading edge to transition between thetemplates provided. Note: There is one template for the rootwhich is fairly wide and blunt. This

❏ 1. Unroll your fuselage plan onto your work surface. Cutthe left edge of Fuselage Plan 2 at the dotted line. OverlapPlan 2 over Plan 1, aligning the

❏❏9. Position the upper center box longeron, again beingcareful that the splice is properly positioned over the jointsupport and with the angled sides

❏ 1. Select the die-cut 1/8" ply tail gear mount (TGM) andtail gear mount doubler (TGMD). Glue the doubler to thetail gear mount, aligning the le

vertical trusses. Glue F7 and then F6 in position.❏ 7. Select the die-cut 1/8" ply former F5. Position it at thetrailing edge of the forward box

1. Build the plane according to the plan and instructions. Donot alter or modify the model, as doing so may result in anunsafe or unflyable model. In

❏ 12. Turn the fuselage right-side-up. Using 1/4" x 1/4"x 36"balsa sticks, fit and glue the 3 upper diagonal cross trusses.Note: The up

❏❏3. Using an 11/64" drill bit, drill 2 holes through eachdoubler, forward box side and landing gear support. Theholes are positioned 1/2" u

❏ 3. Slide the 36" aluminum tube through the fuse. Centerthe tube on the fuse, and mark the tube with a permanentmarker where it exits both of th

❏ 13. Step back approximately 5’ from the tail of the aircraft,and confirm the stab tube is parallel to the wing. If it is notparallel, remove the tub

❏❏3. Fit and glue one of each of the die-cut 1/8" ply SF5and SF6 in position. Note that SF5 aligns with F5, and SF6is positioned behind and glued

of F9 and with the very trailing edge corner flush against thetop of the bottom inner box longeron. Carefully position andglue the stringer flush with

❏❏7. Slide the wing tube through from the left side of thefuse until it is pushing lightly on the side sheet you justinstalled. Working a little at a

❏ 19. Using three 1/8" x 1/8" x 36" balsa sticks, line theinner edge of the wing openings in the fuse outer shellsheeting. HINT: Cut pi

❏ 10. Test wrap the sheet over the front deck several timesuntil you can comfortably get it tight along the formers andrunning along the outer shell s

❏ 1. Position and glue the die-cut 1/8" ply formers TD4,TD3and TD2 vertically against the trailing edge of formers F9,F8 and F7 respectively, cen

4Items in parentheses (GPMQ4243) are suggested partnumbers recognized by most distributors and hobby shopsand are listed for your ordering convenience

❏ 9. From leftover 1/4" x 1/4" balsa, cut two 2" long finlocators. Glue the two locators as shown in the photo,being careful not to glu

❏ 19. Trim and sand the sheeting flush with former TD1.❏ 20. Rough cut a slot for the fin approximately 8-5/8" long,3/4" wide at the trailin

the perimeter of the front and rear deck sheeting just as youdid with the floor sheeting. Sand the formers as needed.When you are comfortable with the

From leftover 1/4" x 1/4" basswood, cut two 2" long cockpitbolt supports. Reach in through the fuselage and glue thebolt supports to th

After the model is covered, you must fuel-proof all exposedwood. You may do so with fuel-proof model paint, 30-minuteepoxy thinned with alcohol, or fi

❏ 4. Wrap the battery pack in at least 1/4" of foam rubber,secure to the servo/tank tray (we prefer Velcro straps for thistask for easy removal).

❏ 2. With the wing attached to the fuselage, all parts of themodel installed (ready to fly) and an empty fuel tank, holdthe model upside-down with the

At this time check all connections including servo armscrews, clevises and servo wires. Make sure you haveinstalled the silicone retainers on all the

When using a “chicken stick” or electric starter, followinstructions supplied with the starter or stick. Make certainthe glow plug clip or connector i

Takeoff on “low” rates if you have dual rates on yourtransmitter–even if you are taking off in a crosswind. For allmodels it is good practice to gain

❏ Great Planes Plans Protector (GPMR6167)❏ X-Acto®Razor Saw (XACR2531)❏ #1 Hobby Knife Handle (HCAR0105)❏ #11 Blades (HCAR0311, 100 Qty.)❏ Builder’s T

70 TwinBore: 1.46 inStroke: 1.22 inDisplacement: 4.06 cu inWeight: 6.28 lbIncludes spark plugs; requires muffler & propStarter control box require

SYSTEM FUTJ93** 9ZAW FUTJ9550 9ZAWSRECEIVER R129DP R309DPSSERVO (QTY) S9101 (4) S9101 (4)SYSTEM 8UAPSRECEIVER R148DPSERVO (QTY) S3001 (4)At the sharpe

2-ViewUse the 2-view or photocopy it and usethe copy to design your trim scheme.

B C

D A

6DIE-CUT PATTERNS

7DIE-CUT PATTERNS

(Continued from page 5)•Whenever just “epoxy” is specified you may use either30-minute epoxy or6-minute epoxy. When 30-minuteepoxy is specified it is

Right now, while the building board is clear, is a great timeto assemble the stab sheeting.❏ 1. See the Expert Tip that follows, then edge glue fourse