NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad
Edition: Model Aviation - 1989/05
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 156
NO OCR TEXT NO OCR TEXT small inexpensive picnic cooier makes UseTul stana Tor assemiing tne low-wing aircrat cooler bought garage sale 50 cents photographs author rear leading edge Drill A-in holes wing mount dowel long drill bit preferable install dowel Center rib A-in trailing edge tack CyA Install remain ing shear webs grain running verti cal remove pins lift structure reinforce joints mediumstrength CyA kicker like Hot Shot speeds process along Pin top trailing edge sheeting plan pin wing structure over glue CyA has fully set re move pins glue bottom trailing edge sheeting place slow-setting CyA Use 30-in length straight 1 x 2 wood hold assembly against flat building surface CyA sets Hold timed two minutes ensure trailing edge perfectly straight Cut leading edge sheeting fit run bead medium-strength CyA tops ribs leading edge spar along front edge sheet ing Place front edge against rear leading edge allowing CyA grab An extra-wide tricycle gear gives excellent ground handling characteristics best landings takeoffs main land ing gear anchored hardwood blocks wing means metal straps screws run another bead along top spar roll sheeting down onto spar Hold place straight 1 x 2 board until CyA has set Repeat same process other side Assemble landing gear blocks glue place reinforce ribs ply doublers join blocks Sheet top center section wing leave bottom center sheeting off un til wings joined dowel holes have located F3 Shape leading edge build other wing point Join wings 1 dihedral tip rib wing joint secure rein force top center area 6-in-wide Left Theres plenty room up front 45 50 engine small Fox 40 does excellent job because theres 600 sq wing area about 5 lb flying weight Right Author says stiff monofilament line used grass trimmers excellent throt tle control rod run inside nylon tubing Gold-N-Rod inners Empty space has filled lightweight shock absorbing foam 26 Model Aviation inner nods b fuselage e ~ron c bolts common fauc~ washershave beeout way bolts stay wing wnen renioveu Pivciiiiig eiieru during vlole n . tache hang up during assembly Washers under wing muu ig Imylull counting bolts captured nylon washers small -rlngs orns prevent binding though trailing edge sweeps forward - BfiLA BtOCj I\ \ K ID 50 NGU*E N CYCLE ____IZLLL 4PLj BL&R FJLLER5 L BALR BL WEBS BATE BWCK 3/BRLpJjp TP 8011DM AILThIc IIiflRE 2 WHEEL UMJoeph Geiger 2 PLC DOUBLER 46 Bi SHEET 2 BL&A &iEET RQ &1OCK $IG LGBLo BAL RI5 .. NXjBALcAP N 4 BLR &IEET N strip fiberglass adhered thin CyA Set wing aside proceed fuse lage construction until ready ad just wing seat Fuselage Laminate F2 F3 lami nate fuselage side doublers being sure make both right left fuse lage sides doublers should inset front sides assuring Fl will glued balsa sides ply doublers Carefully mark centers both top bottom bulkhead Laying sides building board doubler sides facing up tops butted against other mark former brace locations both sides once Using triangle make sure bulkheads perfectly vertical glue F2 F3 F4 sides Place assembly over top view top side down glue second side three formers Pull fuselage sides together tail over centerline top view check ing alignment proceed glue Use bricks weights pins jigs curse words whatever necessary step just dont build banana alignment isnt perfect first time break joint apart redo Using same care brought tail together center Fl between sides glue epoxy Flex Zap Special T Accurately position remaining crosspiec es glue place Glue wing mount blocks position reinforcing small pieces triangular stock Place partially finished wing wing seat center triangulate Measure measure measure have incidence meter use measure measure measure some Get straight alignment perfect no sooner secure wing rubberbands glue tacks tape Using A-in drill bit mark dowel lo cations F3 pushing bit ply doublers spars through lead ing edge F3 Rotate bit fingers until youre sure youve made significant mark F3 Remove bit position glue plywood trailing edge doubler Using /32 drill bit drill through doubler wing through wing mount blocks Remove wing install wing mount dowels bottom center sheet ing Drill through F3 A-in bit DOUBLER 1/32 PLYWOC 1/4 PLYwOOD F-IF-2 3/IA BALSA /2 BALSASHEET SHEETBALSA TRI-STOCK I/4 BALSA TRI-STOCKF El FUEL TANK AREA CB 2-1/2 SIA SPINNER1/4 BALSA TRI-STOCK I/B PLYWOOO NOSE RINS 3/IA BALSA SHE FuSELAGE SISE I/43/R 40-50TWOI/B PLYBALSA CYCLE ENSIFE1/2 BALSA I/B PLYWOSO NOSE RINSF-I PLY 2FUEL TANK AREA BALSA TRI-SYOCK 3 SOWN THROST VS BALSA SHEETVZ BALSA SHEETB BALSA TRI-p STOCK 1/16 PLY 5/35 CIA MUSICSUPPORTI WIRE NOSE SEAR SAVE BROWN 5-1/4 SIA WHEEL enlarge holes through wing trail ing edge doubler Thread wing mount blocks A-20 tap coat threads block CyA tap again Set fuselage aside complete wing Reinforce bottom center joint 6in-wide fiberglass tape thin CyA same manner previously did top Left Install bottom spar again checking alignment straightedge Match centerilne ieading edge rib center marks tack glue ieading edge piace Right Glue shear web between R-1 R-2 attach plywood doublers rear lead ing edge Drill 1h-in holes wing mount dowel Youll note author using long drill bit Thats real handy purpose 28 Model Aviation U wing built upside-down Begin pin- Tack glue ribs place align small ning spar place Employ straightedge square Angle out R-1 As dihedral want assure straightness step SAND 1-1 TO EXACT SHAPE S/IA BALSA SHEETAETER STRINGERS ARE IN Full-Size Plans Available. See Page 202 S/IA BALSAI/B BALSA SHEETPLACE SANS T-7 TO EXACT SHAPESHEET AFTER STRINGERS ARE IN PLACE SHEET-91T-4___T-2T-I 3/16 BALSA T-7T-6________ 3/IA BALSA SHEET F-4 I/A PLYWOOD 1/4 BALSA THI-STOCI T4TO F-A FUSELAGE TOP VIEW T-3 T-4 r-3 I/B BALSA SHEET 3/IA BALSA SHEET FUSELAGE SIDES T-5 S/SD SIA MUSIC WIRE MAKE LANDING GEAR PATTERN T-KT-T KI/4 BALSA TRI- STOCK TSPICAL HINGE LOCATION 1/4 BALSA SHEET 1/4 BALSA TRbSTOCKSLUE LINE I/A S/BFUSELAGE BOTTOM I/Ax 20 TAPBALSA 1/3D PLYWOODFOR NYLON DOUBLERWING BOLD SOWNI/4SO BALSA BOLT1/4 BALSA SHEET DIG CANOPY CS 014 I/BX I/A BALSA ALSASTRINGERSSHEETFIN COCKPITT-I TD ____ ____________ T-3 I/A D/AAlL BALSASERVOS/4 50 RECEIVERBALSA THI I/A PLY L S MOUNTI/3D PLY DOUBLER ENDS HERE PUONROD ESITSRUDDERELEVATORSTABILIZER SUPPORT Ail SERVO F-A I/A DO NYLON3/32 BALSA FUSEBALSA BOLTBOTTOM-CROOG GRAIN S/3D DIA MUSICI/lB -FU VIEW WIRE LOI~ SELAGE SID EELS SHEET OF 2 __________________________________ 3/1K BALSA SHEET FUSELAGEMODEL AVIATION SIDES NOT SHOWN FOR CLARITYG M LET40 DESIGNED BY M 3OSEPH GEIGER TRACING BY JOE DEMARCO 0ID5456 -ALL RIGHTS RESERVED joint Add cap strips wing tips braces Install aileron torque rods epoxy secure ailerons wing Granite State iron-on hinges hinges result efficient gapless joint well worth extra effort covering al ready hinged surface Final sand balance wing re moving material heavy tip shown plan small fuselage fairing will added bottom wing fuselage complete Glue t/oin tank compartment floor place add -in triangular stock joint between floor Fl Use A-in triangular stock reinforce other joints tank compartment Cut shape fuselage top block tank com partment hatch make cockpit cutout outline undersides blocks x %-in strips Add cockpit floor time Tack glue hatch position using small drops CyA careful use small tack spots will want cut through later Glue top block se curely place Use plane sanding block rough out basic shapes chin block top block hatch Tack glue %-in spacer ring backplate spinner tack glue nose ring spacer Cover engine ports keep out sawdust mount spinner mount engine Fl Wrap spinner masking tape Left Center ribs trailing edge tack glue CyA Install remaining shear webs remove pins lift structure reinforce joints medium viscosity CyA Right Pin top trailing edge sheeting plans preparatory gluing ribs May 1989 29 Full-Size Plans Available. Page 202 /4 BALSA SHEET 3/8 BALSA L E SUNG TO SHAPE SEE FUSELAGE SIDE VIEW /1/4 BALSA SHEEr WINS TIP /--____ R io-fi~ AT EACH TIP DIHEDRAL DETAILS/SD BALSA SHEETREMOVE PROM HEAVY _________S/B BALSA LETOP AND BOTTOMTIP TO BALANCEft 9 - LTRfl--i---__ Al-1fVHL IIIII I ~VW BALSA TOPJR ____ I__ Hi- -7rB BOTTOM____ __73717_ 17ZZ JI_________ j}v1T~IIR S-4 IiR-5R-611R7 lB-BR-9RIOj I\ft 7 II S/SSBALSAH I/4IIV II3/3SBALSAII BOTTOMSSTRIPSR-6 SN 125--ILWING PLANII RIGHT V4 BALSA II 3/SDBA R-4 ____ft-3 ____ VIA PLY CEIUBLER ______ - S/SD BALSA B 1/4WEBS-VERTICAL17 ___ __ft-I .BALSA SPARS___GRAIN I________________ ____TOP B BOTTOM li__ ___________ ______— _____ ALL WINS RIE B-I WING SPAN WING CHORS WINS AREA WING LOCAT DIHEDRAL. FUSELAGE STABILIZER STABILIZER STABILIZER VERTICAL F VERTICAL F VERTICAL F ENGINE FUEL TANK NO CHANNE FLIGHT WE WING LOADI STRIPS NOT SHOWN ITOP OR B3TSMI LOCATION prevent becoming scratched shape cowl blocks Glue blocks between Fl spinner ring add trian gular stock joints between sides bottom plane sand cowl blends spinner fuselage Glue bottom rear sheeting place grain running side-to-side add tri angular stock junction sides bottom Its advisable add pushrod system before turtledeck place 48-in Goldenrod can cut half make both pushrods Run /l6 music wire inside ner pushrod servos directly control horns eliminate changes trim due temperature variations Laminate Tl T2 T6 T7 Glue turtledeck formers place Add stringers taking care run straight possible T2 T6 Tack glue scrap pieces A-in balsa du plicate locations fin stabi lizer Tack glue A-in scraps place shape fin filler blocks Ti T7 pleased shape break away fin filler blocks use after stabilizer fin installed Empennage Bend elevator joiner wire %2 music wire File few notches portions will penetrate elevators epoxy will have something grab Bevel leading edges eleva tors leave trailing edge stabi lizer square Join elevator halves rod epoxy making sure lead ing edges lined up straightedge tightly pinned flat 30 Model Aviation Above Pin structure top trailing edge sheeting end tack glue Right Pins removed glue bottom TE sheeting straight 1 x 2 hold assembly flat slow-cure CyA sets GLUE SEAM 114 BALSA SHEET TYPICAL ____ HINGE LOCATION Si Ir IlJ __________________1 SIN BALSA SHEET IS SPORT/ PATTERN AVERAGE SO IN T EACH TIP S AVERAGE SO IN IT WISEST POINT SO IN TO SO IS SZ 88 SZ ES SZ/SG PT ii/1 /1 11/ ABILIZER ifl1 MUSIC WIRE / I II [111 I/4 BALSA SHEET I/I 4 lj l/ ELEVj 1/4 BALSA SHEET SHEET 2 OP 2 MODEL AVIATION GIMLET 40 DESIGNED BY M JOSEPH GEIGER TRACING BY JOE DARCO IALL RIBWTS RESFRVFD building board epoxy has thoroughly set hinge elevator stab same way hinged ailerons Bevel leading edge rudder cut notch clear el evator joiner hinge rudder square trailing edge fin Using extreme care establish align ment position stabilizer onto fuseAssemble hardwood landing gear blocksand glue wing R-3 R-4 lage Measure distances between hinge lines elevators ailerons Make sure stab wing aligned viewed front rear Check recheck gluing stab place youre satisfied lines up perfecfly Add triangular stock under stab meets fuselage Still exercising great care mount fin rudder using small triangle posi tion glue filler blocks place stall dorsal fin round off edges tail surfaces Final steps Mount wing Build wing fairing using scrap wood fuselage flows bottom wing Make sure leave sufficient clearance wing swing away fuse lage removal Remove tank batch glue rear lip plywood scrap its bottom After drilling holes holddown screws fuel-proof tank compart ment engine compartment Hob bypoxy 2 Fill dings youve acquired during construction lightweight filler final sand everything preparation cov ering havent tried Ultracote yet nows good time Though shiny MonoKote still favorite really glossy finish its quite nice work Whatever covering material choose make sure use bright colorsand dif ferentiate appearance top bot tom Youre going put plane through some pretty wild gyrations will need visual assists simply must use painted finish please keep light Install Above Sheet top center aection leave ofl bottom sheeting until pan cia have joined Shape leading edge Below Join panels 1 dihe dral tip rib Reinforce top center section fiberglass cloth thin CyA canopy RC-56 youll using lightweight engine like Fox 4OBB placing battery pack May 1989 31 Reinforce wing ribs plywood dou blers join landing gear blocks Roove iut inc ieaaing cage sheetIng fit run bead medium-set CyA along ribs spar front edge sheeting Right Place sheeting against leading edge allow CyA grab run bead spar top Roll sheeting down onto spar hold place straight 1 x 2 under tank proper balance proba bly good idea Wrap pack foam rubber cover plastic bag protect possible fuel leaks heavier engine its probably best place battery pack radio compartment above wing Although theres plenty room radio gear compartment large standard type high-torque servos used its advisable mount elevator rudder servos extend slight ly turtledeck Since throttle servo doesnt require much muscle older smaller can used save best servos elevator ailerons Lite Flite wheels help keep weight down newer ones quite durable adjusting battery position youll probably come very close specified center-of-gravity CG tolerate thing rear CG indicated plan although slightly forward no farther spar location acceptable until grow accustomed plane Set control throws way ai lerons /2 way elevator maximum can get rudder causing binding against eleva tors nose wheel other hand need move slightly way Everything hooked up checked re checked Youve bench run engine un til its broken youre thoroughly fa miliar its operation great moment has arrived gulp Youre ready go fly ing Flying Gimlet literal-minded airplaneit goes exactly point doesnt correct errors youve done teething self-correcting trainers therefore youll need help learn ing exactly point model other hand youve learned fly lowwing plane symmetrical airfoil youll surprised comfortable confi dence-inspiring Gimlet isand will soon doing better aerobatics thought possible Fox 4OBB already well run day prototypes debut started its usual ease After taxi tests showed nose wheel properly ad justed ship pointed wind brought up half throttle tracked perfectly down runway ac celerated rapidly touch up el evator added realized oh hor rors ailerons werent centered quarter roll three feet half throttle hardly ideal way start airplanes lifebut very good throttle response Fox warded off calamity spunky engine literally grabbed dug its heels hauled new plane up out trou ble Thanks Duke moral tale should check everything have someone else check everything too Flying Gimlet like meeting new friend have instant rapport someone feel youve known forever Ive never before flown aircraft felt familiar such short time model has presence doesnt just obey com mands actually seems enjoy flight itself Upright inverted snapping spin ning looping inside outside effortless ly rolling axially climbing vertically until say enough landing smoothly taxiing competently could swear airplane smiling bursting pride Now fellow modelers isfrn Thanks Few designs truly revolution ary like evolutionary 32 Model Aviation Lay out fuselage sides building board doubler sides up tops butted against other Mark former brace locations both sides operation Left Glue F-213 F-4 sides Use triangle make sure formers perfectly vertical Right Place assembly over top view glue other side Pull tail end together add glue sides symmetrical glue F-i front Left Glue rest croaspieces Position glue wing mounting blocks Reinforce small pieces triangular stock Center Place partially completed wing fuselage seat check squareness planes Measure measure measure have cidence meter use Right -In drill bit mark dowel locations F-3 Rotate bit fingers make significant mark Cut fuselage top block tank compart ment hatch shape Make cockpit cut out outline block undersides x %-in strips Also add cockpit floor Glue blocks between F-i spinner ring Add triangular stock joints tween aides bottom Plane sand cowl blend fuselage spinner Align stabilizer wing wing dIrections Check recheck Glue place sure positioned perfectly incorporate successful ideas ear variants designers ideas strongly influenced development Gimlet Bill Werwage Control Line fame Joe Bridi Don Anderson Thanks curious Gimlet small screwpointed tool boring holes Gimlet 40 Specifications Type 40 Sport/Pattern/Practice Span 60 Wing chord average 102 Total wing area 610 sq Wing location Low wing Airfoil Symmetrical Wing planform Double taper Dihedral tip 1 Before turtledeck place best put pushrod system Glue turtledeck farmers add stringers tak ing care run straight possible Add trIangular stock under stab meets fuselage Use triangle help mount fin/rudder wIth perfect square ness Position glue filler blocks Overall fuselage length 51 Radio compartment size Ll 1 x W3 x H25 Stabilizer span 245 Stabilizer chord average 6 Stabilizer area 135 sq Stabilizer location Top fuselage Vertical fin height 9 Vertical fin width 9 widest point Vertical fin area 52 sq approx Recommended engine size 40- 50 twocycle Fuel tank size 8-10 oz Landing gear Tricycle Recommended number channels 4 Control functions Rudder elevator throt tle aileron Weight ready fly 76-88 oz 475-55 lb Wing loading 18-22 oz per sq ft Basic materials used construction Fuselage Balsa ply Wing Balsa Tack glue scrap pieces -in balsa oc cupy spaces fin stabilizer will tack glue 1A-in scraps place Carve sand fin filler blocks shape Fill dings youve acquired during construction lightweight filler Final sand everything preparation covering Gimlet bare bones form should look about like authors model point Empennage Balsa Bill Materials Note balsa plywood sizes indi cated commonly available units Since next largest sizes re quired project will pieces left over scraphox youve al ready accumulated collection scrap check first before buying ordering especially true plywood parts often small amounts ply re quired plywood parts must aircraftquality birch poplar Lite Ply Balsa sheet 12 3/ x 3 x 36 Continued page 156 May 1989 33 An incidence meter good checking thrust setting engine well wing inci dence Gimlet likes three degrees downthrust three degrees right thrust Gimlet/Geiger Continued page 33 2 YI6 x 4 x 48 1 x 4 x 36 1 / x 2 x 24 1 A x 6 x 36 2 1 A x 3 x 18 Balsa strips 5 A x % x 36 3 A x x 36 4 Y32 x x 36 2 % x 1 x 30 8 A x / x 24 3 A x x 36-in triangular stock 1 3A x 3A x 3-in triangular stock Other 1 /32 x 12 x 24-in aircraft plywood 1 A6 x 6 x 12-in aircraft plywood 1 I/ x 3 x 12-in aircraft plywood 1 A x 6 x 12-in aircraft plywood 2 % x 1 x 36-in balsa aileron stock 1 Set Sig SH125 landing gear mounts 1 Sig CSO14 canopy 1 A-in hardwood dowel 8 long 1 6 x 24-in medium fiberglass tape 1 Set Du-Bro aileron torque rods 2 A x 20 x 1-in nylon bolts 1 Set Rocket City aileron links 4 6-32 x 3A -in bolts 4 6-32 T nuts 4 4-40 engine mount bolts x 3 x 36 1 %2-in music wire 1 Goldberg adjustable nose gear 1 Goldberg steering arm 2 Packages Granite State iron-on gapless hinges 1 Engine mount 4 Wheel collars % 2 Large control horns 1 48-in Blue Sullivan Gold-n-rod 1 Sullivan cable pushrod 2 /16 x 36-in music wire inner pushrods Expo/Weinreich Continued page 39 A-scale V-8 engine design Technopower II maker radial engines showed three new ones Expo fivecylinder 226 cu displacement seven 316 nine 40 radi als have diameter 9 range price $139500 $199500 companys address 610 North St Chagrin Falls OH 022 Last least AMA itself did brisk business its large booth staff told people about organization took membership renewals signed up new members about 200 Expo ended happy note As doors closed people went out fairgrounds late Sunday afternoon found cold snap broken temperature above freezing ice roads beginning melt Su nspots/Stuecker Continued page 44 layer induced present upswing sun spot activity already altering radio trans missions ARRL bulletin tells us its now possible amateur operators US talk others Africa Eu rope six-meter 50 54 MHz ama teur bandthe same six-meter amateur band some us use control model air craft Until peak sunspot activity gan six-meter band capacity limited short-range communications 20 30 miles typically making ideal RC use its currently possible ama teurs talk other amateurs Africa Europe six-meter amateur band its also entirely possible African Eu ropean stations heard country Imagine being shot down some per son operating transmitter England likely someone nearby state Further propagation conditions continue improve interference may ob served higher frequencies well dont think youre immune long-distance inter ference because operate 72 MHz four-meter band What can done minimize poten 156 Model Aviation PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINE CUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 rerfect GLASS CLOTH 58 oz Full Satisfaction Full Refund Factory pro-treated perfect compatibility epoxy polyester resin *395 per yard 38 wide Price includes postage & handling Immediate shipment Minimum order rds Easy use instructions included Also ad Plain Cradle-2 Marty84 Stonefield Trail Berr SWindeor CT06074 For infowriteorcall D & R AIRCRAFT MFG PO Box 299 ales TX 78629 72-7023 Major Credh Cards Accaptad