Stephens Akro

NO OCR TEXT NO OCR TEXT ifications very attractive paint scheme Ray reduced full-length bubble canopy partial bubble raised turtledeck also slightly enlarged tail surfaces redesigned square tips Internally revised fuselage framework bit redesigned controls better feel optimal performance letter Ray wrote has built restored other aircraft Stephens remains favorite flies often Some readers may already familiar Ray Parkers creative talents super craftsmanship abilities 14 Model Aviation article about close copy Sperry Messenger December 1974 issue EAA publication Sport Aviation Ray used three-views information gleaned article Pete Bowers along some eyeball engineering guesstimation develop plans post-World War single-place Army biplane Ray began career aviation 1940 flying school Missoula Montana progressed Army Air Corp flying schools graduated photo-reconnaissance pilot flying P-38 photo planes Pacific theater World War II Three-quarters rear view model Differences between variant original Stephens Akro include raised turtledeck slightly enlarged tail surfaces Top Custom details turned Williams Bros 3-in scale pilot Ray Parkers likeness Bottom Canopy Fiber glass Specialties T&D Rays name done Presto vinyl stick-on lettering Above left original SuperTigre 90 installation included provision smoke system Above right Scale twin stacks made K&S brass tubing Bottom left brace wires tail surface wires secured bottom fuselage brass strips rudder horn twin elevator horns driven single servo Bottom right Archer male quick disconnects Catalogue #64-3038 soldered ends I64 music wire tail braces attachment fuselage tail surfaces STEPHENS AKRO B SHEPHERD % SHEET I6'Z 4 NICE FLYING PINNRT VER /MPRE5$VE CAP 3TRIP -3Q3PRuCE- 7 KLE z 5MEET Zx TE I C CD CD CD C LASER 200 PILOT LEO LOUDENSLAGER 1984 COLOR SCHEME SEE R-T CATALOG FOR COLOR PHOTOS SHOWING NOMENCLATURE ON AIRPLANE ODLO DID DONIPE TYPrOAL After war Ray studied universities Montana Indiana Columbia earning PhD geology moved career flying over world US Geological Survey now retired residential airport community Ocala Florida Ray recently restored Piper PA-22 converting Pacer writing next agenda RV-6 admirers Stephens Akro have requested airframe kits plane over years Ray has welded least 15 kits Several went Australia several US modelers shipped England decision replicate Rays Stephens based good looks midwing paint scheme also fact could built common off-the-shelf model materials would ensure light strong craft could aerobatics addition lot extra horsepower firewall Indeed model delivers good aerobatic performance fitted wide array engines tried SuperTigre 90 first few flights using throttle speed control found plane capable handling level power through aerobatic routine first flight model flew well full-scale prototype no need use trim levers transmitter line up Id done rolls vertical up rolls loops snaps knife-edge flight planning try stall slow flight engine flamed out tweaked open needle valve took off second flight model went straight ahead stall slow flight very stable no sign tip stalling check performance different power installation removed SuperTigre added Saito 80 GK COLOR SCHEME RED BLUE RC Stephens Akro Type Sport Scale Wingspan 721/2 inches Recommended engine size type Saito 80 GK Range 75 -90 two-stroke 80-120 four-stroke Number RC channels recommended Four Expected flying weight 9 lb 2 oz Type construction Built-up Type covering/finish recommended Sig Koverall MonoKote paint Cheveron Perfect GOLD BAND - K SCALE Aor0o I -c L -M AIRFOIL SECTIONS J FUSELAGE CROSSECTIONS F 0040 PIN DTDIPIDDITVPICOULASER 200 TOP VIEW & SECTIONS ROBERT C MORRISON PNBTE0 N GSA REPLA-TECH NYDNN,OGL III DUNG ALL P40008 RESENTED 16 Model Aviation GOLD BOND LASER 200 BOTTOM VIEW Full-Size Plans Available. Page 180 A______ _ 4 STEPHENSAKRO June1992 17 Left The foam wing panel core has cut up sections making set l/32pIy master ribs Right wing panels being assembled over piece Celotexm secured workbench trailing edge has shimmed prior attaching top sheeting four-stroke Hayes 60 mount remained place plane proved bit gung ho aerobatics withtheST 90 aware Saitos Open-frame wing has 900 bellcrank mounted Sig soldered clevis plywood rroveri ssueIevIor building technique achieves lightness strength plate Note Lite Ply frame crank cover structures have partially completed balances yet built onto tips shaft protrudes little farther SuperTigre fact recommend check engine selection against plans before cutting out Lite Ply doublers adjusting firewall slots needed keep spinner backplate flush front cowl plans indicate 75 90 size range two-stroke engines 80 120 range four-stroke ones think however model would fly quite well potent 65-size two-stroker provided kept weight under nine pounds Saito 80 four-stroker used 14 x 6 Master Airscrew prop has proven ideal airplanes nine-pound two-ounce flying weight engine runs 18 Model Aviation piy pens ior sirong orwara useiage DOX Iligni ne completed fuselage frame Stab will ft l/21fl gap between F-i Os Note 1/16 X l/ojfl strip glued top longeron base turtledeck side sheet Left Beginning construction removable provide base l/ain cabin area sheeting fle willy i-ni uui sirips servu UUlfl 10 eiign mormers ana eusa top sheeting wrapped around paint cans form curvature bottom blocking forward removable cabin section partially completed Note hold-down tab frontlanding gear has installed and extended top sheeting anchors section rearshaped Note smoker tank installation Full -Size Plans Available. Page 180 j iO1tfl3flH3ZII8V15 000 L9~D9 -o i LEET WINE -0rsteady during maneuvers making aerobatics pleasure smoke system Fm planning install should heighten enjoyment Construction Take time cut out kit parts before assembling major components gives good feel finished product minimizes mistakes makes scratch-building lot easier enjoyable Trace parts outlines plan affix wood using low-contact cement Wing achieve accurately tapered wing using built-up construction talented modeling buddy John Rimmer hot-wire wing panel out foam used make set /32 plywood rib patterns follows First laid out marked foam panel rib station using fence band saw keep cuts square cut slice foam rib station traced outline station foam slice 1/32 plywood carefully cut plywood exact shape foam After securing ply templates 3/33 balsa sheet using two thumbtacks ready cut out set ribs time invest making set master ribs will time well spent since can used future tapered-wing models Make sure ribs marked up position since wing progresses fully symmetrical semisymmetrical tips wing panels built upside down initial phase order keep ribs 9O top spar Select four straight /4-in-sq spruce sticks spars pin plan spar location Continued page 34 fairing block covering landing foam form landing gear cuff Fiberglass cuffs landing gear have gear has shaped hold- has shaped prior being covered faired fuselage held down blocks LG cuffs installed fiberglass cloth epoxy place sheet metal screws June1992 19 Hobbypoxy clear choice more hobbyists Thats because can depend Hobbypoxy hold up under difficult conditions Formulas 1 2 3 4 fast acting rapid curing super holding epoxy glues provide incredible bonding power can used filling nicks cracks gaping joints Formula 3 gel-like consistency keeps put Formulas 2 4 come convenient 4 ounce squeeze bottles Whatever needs formulas just right whatever youre gluing Stephens Akro/ Shepherd Continued Paoe 19 Use waxed paper protect plan glue spills Pin down /4-in-sq balsa stick bench runs along location marked jig shown plan Trial fit rib top spar trimming needed pin ribs balsa jig behind spar Using 9O triangle check rib perpendicular bench Place bottom spar rib cutouts use thick CyA cyanoacrylate glue joints youre building model sport flying youll probably want use open wing structure cap strips case glue piece /8 X 5/s-in strip edge 3/33 x /2-in balsa sheet trailing edge other hand youre planning use model sport Scale competition youll probably want fully sheeted wing case glue /8-in strip edge 3-in-wide balsa sheet ensure absolutely straight trailing edge use straightedge glue strip sheet Since trailing edge little over 36 long youll have splice some wood unless youre using 48in stock Attach trailing edge sheet ribs aliphatic glue butting x 5/s-in strip firmly rear ribs pinning place Position straightedge along front edge ribs trim overlength ribs until flush straightedge Slice two pieces /8-in balsa sheet 3/4 X 3/g x 36-in lengths leading edge strip Pin strip ribs glue CyA Using long sanding block bevel strip conform shape ribs will provide good gluing surface attaching leading edge sheeting panel Position 3-in-wide 3/32-in leading edge sheeting over ribs mark location sheet meets rear spar trim wedge sheet Use aliphatic glue rib contacts sheeting run bead Upgrade Vision 8P 8SP transmitters Enhance Vision 8P 8SP ATRCS 5P7 module new version 30 upgrade upgrade increases number setups available 8 allows aircraft naming failsafe positions Futaba PPM FM receivers Upgrade Vision 8SP get additional improvements including flap stick reverse cross trims elevator camber VTR enhancements just $9500 plus shipping tax applicable Well record re-load current setup information plus send hardcopy records order fill out form send transmitter less battery antenna RE module Control Systems LaboratorIes 238 So Hiliview Drive Milpitas CA 95035 408 946-4142 Name City State 30 upgrades ______ x $9500 ________ Local CA sales tax applicable Shipping $500 ground $1000 2nd day Total Acceptable payment methods COD add $375 checkMaster Card VISA Card # Expires2 34 Model Aviation Smooth n Easy low-viscosity epoxy finishing resin spreads thin & cures clear filling wood sheeting foam wings applying fiberglass cloth tape fuel proofing waterproofintj Like its n Easy DeHAVILLAND BEAVER GIANT SCALE 96 MAULE M51M6 ROCKET 114 SCALE 98 FAIRCHILD 24 GIANT SCALE 90 STINSON SR-B 1/5 SCALE 100 SPERRY MESSENGER 1/4 SCALE 60 thick CyA along 1/8-jfl leading edge strip Pin sheet along strip run bead thick CyA along spar curl sheet over ribs pin spar Cut wedge 3/37 sheet fill space between number 1 7 ribs glue place youre building open-frame wing cap-strip ribs remove panel both panels finished point draw straight line least 72 long workbench Mark position number 12 rib line pin tip jigs place Place wing panels line orienting rear edge bottom spar directly front line pin panels down centerline spars tip jig Shim center trailing edge panels inch pin securely bench Place straightedge top trailing edge shim latter four five places Firmly pin down trailing edge maintain straightness throughout remaining steps Once assembly firmly pinned down epoxy 114-in balsa wing spar filler place between spars Accurately fit /4-in balsa TEB /8-in trailing edge epoxy place Epoxy 1/8-in ply DB pieces either side spars filler piece Trim 3/33 top trailing edge sheet fit squarely against 1/8-in trailing edge secure panel aliphatic glue thick CyA Sand bevel top Is-in leading edge conform shape ribs glue 3/33 leading edge sheeting ribs just did bottom sheet however sheet area between number ribs time Make sure wing remains firmly pinned down before continuing next step Until verticals between ribs have glued spars still possible twist panel after step its virtually impossible Continued page 38 0 0 0 0 0 Wingspan 47Area 460 sq n z Assembly Time 6 hrs mae 1JLenght 42Weight 475-500 lb0 PRE-ASSEMBLED AND INSTALLED HAYES MOUNT NOSEGEAN B OZ HAYES TANK SULUVAN SKYLITE WHEELS SULLIVAN PUSHRODS CONTROL HORNS GAPLESS HINGES ALL AROUND June1992 35 fine kits include Preformed landing gear cut parts surfaces drawn rol horns Complete plans Fiberglass cowls pants Belicranks ity hand selected balsa Window acetate Screws ruction manual photopage order Call 800 327-7198 ext 10 Inquiries Call 208 773-9001 Catalog fine kits $400 STITS PLAYBOY 1/3 SCALE 88 yourself favor IKON NWST Kit n world wide finest scale kits WACO 10 1/5 SCALE 73 PLUG IN WINGS / ADVANCED FULL SYMETRICAL AIRFOIL / RATED FOR ALL MANEUVERS INCLUDING MAXIMUM 0 PULL UPS / CLEAN AERODYNAMIC DESIGN IS FAST STABLE AND EFFICIENT TM COMPLETELY ASSEMBLED & FINISHED OUT OF THE BOX NO GLUE PAINT OR COVERING REQUIRED INSTALL YOUR RADIO 35-46 ENGINE AND PROP AT THE FIELD COMPUTER DESIGNED & BUILT BY MIT AEROSPACE ENGINEERS INCREDIBLE FLIGHT PERFORMANCE AND QUALITY BUILTINI Hi-G introduces thebiUJIISHhUiI 0 Cs VISA & MC Accepted Orders & Info 602-788-5209 Hi G 2131 E Crocus Dr. Phoenix AZ 85022 Stephens Akro/Shepherd Continued Page 35 Glue verticals place Add top cap strips top center section sheet aft spars Epoxy ribs 1-A flush bottom number ribs Glue 1/8 X 3/8-ifl piy pieces leading edge tops flush top ribs 1-A Epoxy WBP 1-A ribs ply pieces leading edge Epoxy rear WBP top sheet Remove wing workbench turn over sheet bottom center section Using long sanding block finish sand 11s-in trailing edge flush I32 sheeting Cut 1/2 x 2-in trailing edge pieces two 15-in pieces being certain cut proper angle good fit both center section aileron position Lay piece waxed paper bench turn wing upside down press down firmly trailing edge trial fit 1/2 x 2-in trailing edge pieces against wing trailing edge should flush fit Make necessary adjustments glue seam CyA Repeat procedure other panel Cut remaining two trailing edge 1/2 x 2-in pieces length fit angle aileron joint attach pieces trailing edge noted above glue has dried mark aileron panel ball-point pen cut out ailerons using sharp blade straightedge Sand bevel aileron leading edge set ailerons aside havent already done decide point whether wing tip scale sport type build tip accordingly Tail surfaces worked out construction technique previous designs Its simple produces strong straight empennage construction information youll need shown plan questions arise during assembly close look section drawing should clear up Fuselage Begin gluing Is-in balsa sides Lite Ply doublers contact cement seal edges CyA Build right side directly over plan build second side atop first after covering sheet waxed paper Lite Ply less full /8 thick youll need shim forward area side /4-in built-up rear portion left side flush 1/s-in-sheet fuselage side Remove sides plan Separate sides pin down top view plan F-6 former tail post using inside lines plan guide Install former slots ply doubler glue place Install F-3 pin sides hold place glue Install F-2 before gluing place pull sides using pin rubberband persuaders across top secured engine mount firewall using method effectively seals front end fuel entrainment model structure After inserting bolts through firewall soldered wire across head slots epoxied wire liberally Continued page 40 C-130 HERKY-BIRD 130118 Wingspan515 87 Wing area 272sq 752sq Wing load 335 02 33 02 natruction manual included PLANS 3 sh $48 $68 115 scale nacellas available plans include model specs weight schedule scale source information 1/4 Scale BD-5D Wingspan Wing area Wing loading PLANS 4 sh Canopy air intakes & Rolled & postpaid /USAby PALMER PLANS 210-1/2 EL CAMINO DR Dept C BEVERLY HILLS CA 90212 310 274-2456 38 Model Aviation A-26BINVADER Scale112 70 5405 sq Wingspan Wing area Wing loading 229 twin 25s Instruction Manual Included PLANS 4 sh $58 Fiberglass cowls avallabls SIMPLY FUN 0000000 may well easiest-to-fly commercially available outdoor RIC aircraft Tom Atwood Editor Model Airplane News May 1992 issue AVAILABLE NOW ParaPlane Sport components included $395 Basic Kit Requires 2 Channel radio bafl & Charger $22995 $10 S/H charges NJ residents 7% sales tax 8 AA batteries required Electric R/C Corp cml 8OO-227-84Ob milE Penneauken NJFree Full Color Brochure 0810971 40 anginafor experiencad 645 5058 sq 33802 Experts whove reviewed tapes agreewhether youre experienced RCer beginner whos ready something straight level flying Wring Out just ticket THREE TAPES COVER IT ALL studying practicing three tapes sequence experienced flyers well beginners can attain kind aerobatic refinement weve admired watching pros tapes real-time split-screen imaging perfect blend Stephens Akro/Shepherd Continued Page 38 epoxied firewall Lite Ply slots Sig Kwik Set pulled sides hand until epoxy set Cut 114-in-sq balsa rear fuselage crosspieces glue place Note top pieces slightly longer bottom ones Glue diagonal braces place Install LGP epoxy sheet bottom inside Lite Ply doublers Glue Is-in sheet F- 10 place Remove fuselage plan position glue F-9 voice-over live sound gives Wring Out real edge over less-professionally produced videos progress will proof VALUE THAT CANT BE BEAT Best Wring Out series priced youll able own full set originals resorting low-quality copies Wring Out volumes dealers phone 1800 531-1784 CARL GOLDBERG order direct MODELS INC Install /i x 1/2-in top rear turtledeck stringers between formers F-6 F-9 Fit glue formers F-7 F-8 Glue Is-in medium-weight balsa sheet turtledeck sides Sand sheets flush 3Iis top stringers glue bottom layer top /4-in turtledeck sheet Pin some /2-in scrap balsa top longerons stabilizer position glue top F-b 1/4-in-sq tail post F-9 Finish sheeting turtledeck over stabilizer remove /2-in shim scraps Glue /4-in spruce braces between formers F-2 F-3 Now good time shape 118-in A-grain balsa sheet will cover corners fuselage top Cut sheet little longer necessary cover corners between formers wrap around some spray paint cans secure assembly rubberbands until dry Cut maple wing hold-down blocks corner fuselage opening install epoxy blocks dry place wing saddle true up fuselage centerline pin firmly place Cut three pieces 3/is dowel about 3 long drill /16 hole through wing ply hold-down plates maple block insert dowel Repeat procedure until four holes have drilled Remove three dowels unpin wing Tap maple blocks I4-20 tap check threads nylon bolt Drill holes wing plates 1/4 position wing fuselage bolt down Place waxed paper plastic wrap over wing center section formers F-3 F-6 position formers F3-A F6-A clamp clothespins Place Is-in saddle strip over sheeted wing pin down glue F3-A F-6A Position formers F-4 F-5 glue x /4-in strips between begin sheeting cabin section photos shows balsa sheeting wrapped around some paint cans form its curvature Continue sheeting until whole cabin section complete including hold-down tab front dowel bolt rear Sheet area between F-2 F-3 remove cabin section unbolt wing Install tubes throttle pushrod make provision smoke system installed Assemble install fuel tank optional smoke system tank Install bottom double /4-in sheet between F-2 F-3 along former FB bottom stringers Position landing gear drill mounting holes Shape balsa forward landing gear blend cowl former FB use illustration dashed line plan guide shaping channel Bolt engine spinner firewall Position cowl using straightedge along top side fairs Is-in top sheeting between F-2 F-3 Trim cowl necessary Epoxy hardwood cowl hold-down blocks F-2 replace cowl drill holes sheet metal screws through cowl cowl blocks Pack foam around fuel smoke system tanks glue /4-in-sq spruce corners doublers between F-2 F-3 Epoxy F-li F-lB place Fuel proof entire front end forward F-2 coating epoxy Build landing gear fairing /4-in Continued page 48 40 Model Aviation Its Wring Out aerobatic instruction series featuring Dave Patrick Stephens AkrolShepherd Continued Page 40 balsa Sand fairing flush EB forward block install 1/4-in dowel center Drill through dowel landing gear tap gear 4-40 bolt secure fairing make landing gear cuffs sanded some foam shape mounted piece Lite Ply scrap covered fiberglass epoxied epoxy dried hogged foam out fiberglass gave cuffs another coat epoxy inside out glued hardwood blocks landing gear fairing blocks attached cuffs sheet metal screws Covering finishing gave fuselage tail surfaces two coats Sig nitrate dope sanding off fuzz between coats covered structures Sig Koverall attached Koverall dty brushing nitrate through material wherever contacted nitrate-doped wood After installing gluing fin tightened covering using iron set medium heat Take care avoid excess heat Koverall since material tough could distort underlying structure simply going little too far tightening gave fuselage tail surfaces five coats nitrate dope painted Cheveron Perfect paint colors match Super MonoKote used wings Starting Williams Bros three-inch scale pilot turned likeness Ray Parker custom-made cap headphones shoulder straps cap made piece cotton painted blue nylon screening mesh /32 plywood band visor headphones balsa bag tie band neck strap Futaba radio set perfect shoulder straps painted instrument panel flat black dope cut out Gorham Model Products instruments glued Steve Durecki Fiberglass Specialties T&D makes cowl wheel pants pulls canopy butyrate sheet products highest quality Bob Obenberger Romco created Tru-Turn nose art Its almost exactly scale really puts finishing touch Akro found Bob Steve Durecki Ray Parker pleasant work think can objectively say best flying models including Lark TR-260 plan enter Scale contests set color photos suitable presentation folder available Jim Pepino Scale Plans Photo Service 48 Model Aviation Power easy starting power smooth take offs power intricate maneuvers Red Max 54 GAL TOTALmakes DRUM $MTengine come __alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs ___secret gredients keep engine last____ng longer ____________ running rheavy dty appmore power___ 25463fully ___33611any other ______41760 100% money back guaran tee com pletely sat isfied ___reason Red Max has power better idle _____19081432139312791145and better _____20161540150113871253 CUSTOM BLENDED FUEL INGREDIENTSGrandwear charTotalacteristics Available type engine use Call price Mm gallon boats cars helicopters speed ern scale scale kavan iginition 3000 than . Prices May Varyother fuel RED MAX PREMIUM FUEL fuel beginners & sport flyers should use Avail tn synthetic castor lend REDMAXO101676274168160917365 RED MAX 5123792890382974223833 RED MAX 1014301073104495885831981 RED MAX 12155511661135104293335241 REDMAXiS1679125912261125100838500 RED MAX RACING FUEL Trophy winner planes boats & cars two boat blends castor ok up 40% nltro RED MAX 202133137313361227109849890 _____ RED MAX 252406152414841362121958057 RED MAX 403237197719241766158282503 RED MAX 503790227922182036182398800 RED MAX 6043432581251223052064115097 RED MAX 6546202731265924402185123246 RED MAX 4-CYCLE FUEL Efimmmisa detonation & kIckback 4-cycle engInes smoother Idle power I0-4CYCLE154911621131103893032428 15-4 CYCLE1826 136913331223109540576 RED MAX HELICOPTER FUEL Extremely smooth ninning extra defosmer drk color special heavy nil hellcplm toHe9copler1578 11841152105894733611 ______ lSt-lelicopter1855 139113541243111341760 ______ RED MAX PERFORMANCE FUEL HIgh flash point hesvy oil use tuned pipes ductad tan & othe 5 Perfonnanca1302976950872781 lBPerforrsarae 1578118411521058947 IsPerforrsamnn 18551391135412431113 RED MAX PATTERN FUEL Pmven best fuel pattern engines using pumps tuned pipes 5 Pattern131296390387979124358 10 Pattern15501081102297887930142 15 Pattern190612891218110399234086 SUPER TIGER 3000 FUEL Best fuel super Tiger 2000-4000 engines ______ Super Tiger 3000 1430 1073104495885832479 RED MAX DIESEL FUEL Supeilor diesel back list popular demand customers BEARING TYPE BALL PLAIN PLEASE PRINT lTY STATE ZIP Order Form CALL OR USE ThIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OW ON ThE LEFT THE TOTAL ON RIGHT Freight tree qta gala No handling charge Freight collect drums Deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $375 per carton UPS shipments add $500 per carton hazardous materials tee OTYFUBC1E4GALCASE 24GAL6OGAL128GAL cidendMIXTIJGALSOALCAN PERGALPER GALPER GAL RED MAX FUEL Continued page 80 CARD TYPE AND NO EXPIRATION OATF ELDON J LIND CO #401 UIUUH Easiest hinge tool available $325 Finest Building Tools Available w SEND SELFADORESSED STAMPED EN VELOPE FOR CATALOG #101 EXTRA HANDS Makes covering easy $1775 3151 CARAVELLE HAVASU CITY AZ 86403 602 4537970 happen live near Ocala Florida consider paying visit Ray Parker fine craftsman gentleman version Stephens Akro would exist Contact Ray Leeward Air Ranch Ocala like enjoy crafting balsa-and-plywood models love aerobatic flying building Stephens Akro will time well spent bench model does Acknowledgements Bud Davisson Emily Zimmerman Ray Parker contributed some information article want publicly thank helping project come alive * Poor Mans Prop/Hughes Continued Page 63 Note small block prop hub raises prop off base allow insertion triangle prop held place conical nut prop balancer prop pitch gauge simple inexpensive construct Pitch measured slipping various triangles under prop until find bottoms base plate slot matches propeller angle will have construct triangles pitches wish measure Fortunately geometric basis pitch calculation pretty simple Ive reduced triangle dimensions rather using trigonometry angles Just plug numbers equation triangle base always has length 100 millimeters pitch 314 x dia x 100 ngle height mm example wish make triangle representing 7 pitch 4-in radius must multiply 2 get diameter use formula formula yields 28 millimeters height base always 100 millimeters Just construct 900 right triangle dimensions cardboard such found back paper tablets triangle 6-in pitch 3-in radius multiply 2 use formula would 32 millimeters 100 millimeters photos shows templates some pitch angles commonly use will want check least two points probably blade radius Make templates COMPOSITE SOLUTIONS--PO Ito 252 Haclet NJ 07730 CARBON FIBRE Tuned Exhaust Systems LOW RPM Pipes below 11000 STANDARD engines 40 90 size OSRossi Pico Webra Sc per Tigre others Performance Pipes LONG STROKE ENGINES 60 size OS OSHanno Special Webra YS YS-120 4 cycle Custom Pipes UC Speed Aerobatics other applications carrying Free Flight Competition Timers br Info call s 908 264-6693 till 10PM 1ST OUR PRODUCTS ARE OMPETITIVELY PRICED AGAINST ALUMINUM INPORTS Satcsfaction guaranteed money back need sure dont cost much dont take much time Some typical templates shown photos Shallow angles may require constructing triangle rectangle done 5 lh-in-pitch 3Ii 6-in-radius template template will come up bottom blade propeller being measured another photos Kyosho Electrics blade 8-in pitch other 81/2 easiest way correct unbalance make pitch both blades 81/4 splitting difference between 8 81/2 shimming back hub masking tape easier alternative beveling prop made wood Wood props can sanded filed proper hub angle Just sure keep hub surface flat want know whats going propellers youd best make purchase prop pitch gauge odel Aviation WiLire assembly before yuu bUllO rM tAY M Stephens Akro/Shepherd Continued Page 48 $lAiNrJG Nay SpecialGT GENERIXExpiresjune7 Foorrerly DOCS GENERIX FLY-ROD UlIro-Hi-Tec Fon Fly Special Airfoil Technology & Nerd Nodriog Bar Tiere Build 0-Tube Wiog Keeglas Soon & Geon Inclodeus Whnol Conloor Germ Balno &- Plysoood Skid Horderoro & Supor Lire Coveong Conrporirioo Arofrarne Kir ConporerRadionfMionoo$59 Fogine 34040 Full Sire Plan TAn OATOR2 Km rho Prier Ore holh Tnil Galonni Bror Oral Aroundt No Micro Nredndt NOT rho Paid Heaor Ornigord Cornhor-Srraronr & Elecronic Aoo Spor-r Plooo Will Pack Arnybadyr Lonoh SFuN 38 uREA 3ff \ -Z7SFEOAL PRICE 2 Flarernl $2995Z2Z~ABF CI4EAF SENSATIONSul Jr Soredy Likic Per Ho Fun-Flynn, Foon Wing Kovglo Boon Sapro Lilo __________________ Door Broovo Whool Hordonore & Oreor lorocrions Build 12 BR Doer Lor Ore Peico Fool 111 Blow 262035 Off 90% rho Cowynorior Huge Ainfoil-Plirs So Slow Toenpa FL 33615 Coo Walk Nrc er Irnocro FOeHiogrd Try 11813-854-lOTS SF424 4e ARE 770 SFOAL PRICE COO pEgro SC Ooroe 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NO OCR TEXT NO OCR TEXT ifications very attractive paint scheme Ray reduced full-length bubble canopy partial bubble raised turtledeck also slightly enlarged tail surfaces redesigned square tips Internally revised fuselage framework bit redesigned controls better feel optimal performance letter Ray wrote has built restored other aircraft Stephens remains favorite flies often Some readers may already familiar Ray Parkers creative talents super craftsmanship abilities 14 Model Aviation article about close copy Sperry Messenger December 1974 issue EAA publication Sport Aviation Ray used three-views information gleaned article Pete Bowers along some eyeball engineering guesstimation develop plans post-World War single-place Army biplane Ray began career aviation 1940 flying school Missoula Montana progressed Army Air Corp flying schools graduated photo-reconnaissance pilot flying P-38 photo planes Pacific theater World War II Three-quarters rear view model Differences between variant original Stephens Akro include raised turtledeck slightly enlarged tail surfaces Top Custom details turned Williams Bros 3-in scale pilot Ray Parkers likeness Bottom Canopy Fiber glass Specialties T&D Rays name done Presto vinyl stick-on lettering Above left original SuperTigre 90 installation included provision smoke system Above right Scale twin stacks made K&S brass tubing Bottom left brace wires tail surface wires secured bottom fuselage brass strips rudder horn twin elevator horns driven single servo Bottom right Archer male quick disconnects Catalogue #64-3038 soldered ends I64 music wire tail braces attachment fuselage tail surfaces STEPHENS AKRO B SHEPHERD % SHEET I6'Z 4 NICE FLYING PINNRT VER /MPRE5$VE CAP 3TRIP -3Q3PRuCE- 7 KLE z 5MEET Zx TE I C CD CD CD C LASER 200 PILOT LEO LOUDENSLAGER 1984 COLOR SCHEME SEE R-T CATALOG FOR COLOR PHOTOS SHOWING NOMENCLATURE ON AIRPLANE ODLO DID DONIPE TYPrOAL After war Ray studied universities Montana Indiana Columbia earning PhD geology moved career flying over world US Geological Survey now retired residential airport community Ocala Florida Ray recently restored Piper PA-22 converting Pacer writing next agenda RV-6 admirers Stephens Akro have requested airframe kits plane over years Ray has welded least 15 kits Several went Australia several US modelers shipped England decision replicate Rays Stephens based good looks midwing paint scheme also fact could built common off-the-shelf model materials would ensure light strong craft could aerobatics addition lot extra horsepower firewall Indeed model delivers good aerobatic performance fitted wide array engines tried SuperTigre 90 first few flights using throttle speed control found plane capable handling level power through aerobatic routine first flight model flew well full-scale prototype no need use trim levers transmitter line up Id done rolls vertical up rolls loops snaps knife-edge flight planning try stall slow flight engine flamed out tweaked open needle valve took off second flight model went straight ahead stall slow flight very stable no sign tip stalling check performance different power installation removed SuperTigre added Saito 80 GK COLOR SCHEME RED BLUE RC Stephens Akro Type Sport Scale Wingspan 721/2 inches Recommended engine size type Saito 80 GK Range 75 -90 two-stroke 80-120 four-stroke Number RC channels recommended Four Expected flying weight 9 lb 2 oz Type construction Built-up Type covering/finish recommended Sig Koverall MonoKote paint Cheveron Perfect GOLD BAND - K SCALE Aor0o I -c L -M AIRFOIL SECTIONS J FUSELAGE CROSSECTIONS F 0040 PIN DTDIPIDDITVPICOULASER 200 TOP VIEW & SECTIONS ROBERT C MORRISON PNBTE0 N GSA REPLA-TECH NYDNN,OGL III DUNG ALL P40008 RESENTED 16 Model Aviation GOLD BOND LASER 200 BOTTOM VIEW Full-Size Plans Available. Page 180 A______ _ 4 STEPHENSAKRO June1992 17 Left The foam wing panel core has cut up sections making set l/32pIy master ribs Right wing panels being assembled over piece Celotexm secured workbench trailing edge has shimmed prior attaching top sheeting four-stroke Hayes 60 mount remained place plane proved bit gung ho aerobatics withtheST 90 aware Saitos Open-frame wing has 900 bellcrank mounted Sig soldered clevis plywood rroveri ssueIevIor building technique achieves lightness strength plate Note Lite Ply frame crank cover structures have partially completed balances yet built onto tips shaft protrudes little farther SuperTigre fact recommend check engine selection against plans before cutting out Lite Ply doublers adjusting firewall slots needed keep spinner backplate flush front cowl plans indicate 75 90 size range two-stroke engines 80 120 range four-stroke ones think however model would fly quite well potent 65-size two-stroker provided kept weight under nine pounds Saito 80 four-stroker used 14 x 6 Master Airscrew prop has proven ideal airplanes nine-pound two-ounce flying weight engine runs 18 Model Aviation piy pens ior sirong orwara useiage DOX Iligni ne completed fuselage frame Stab will ft l/21fl gap between F-i Os Note 1/16 X l/ojfl strip glued top longeron base turtledeck side sheet Left Beginning construction removable provide base l/ain cabin area sheeting fle willy i-ni uui sirips servu UUlfl 10 eiign mormers ana eusa top sheeting wrapped around paint cans form curvature bottom blocking forward removable cabin section partially completed Note hold-down tab frontlanding gear has installed and extended top sheeting anchors section rearshaped Note smoker tank installation Full -Size Plans Available. Page 180 j iO1tfl3flH3ZII8V15 000 L9~D9 -o i LEET WINE -0rsteady during maneuvers making aerobatics pleasure smoke system Fm planning install should heighten enjoyment Construction Take time cut out kit parts before assembling major components gives good feel finished product minimizes mistakes makes scratch-building lot easier enjoyable Trace parts outlines plan affix wood using low-contact cement Wing achieve accurately tapered wing using built-up construction talented modeling buddy John Rimmer hot-wire wing panel out foam used make set /32 plywood rib patterns follows First laid out marked foam panel rib station using fence band saw keep cuts square cut slice foam rib station traced outline station foam slice 1/32 plywood carefully cut plywood exact shape foam After securing ply templates 3/33 balsa sheet using two thumbtacks ready cut out set ribs time invest making set master ribs will time well spent since can used future tapered-wing models Make sure ribs marked up position since wing progresses fully symmetrical semisymmetrical tips wing panels built upside down initial phase order keep ribs 9O top spar Select four straight /4-in-sq spruce sticks spars pin plan spar location Continued page 34 fairing block covering landing foam form landing gear cuff Fiberglass cuffs landing gear have gear has shaped hold- has shaped prior being covered faired fuselage held down blocks LG cuffs installed fiberglass cloth epoxy place sheet metal screws June1992 19 Hobbypoxy clear choice more hobbyists Thats because can depend Hobbypoxy hold up under difficult conditions Formulas 1 2 3 4 fast acting rapid curing super holding epoxy glues provide incredible bonding power can used filling nicks cracks gaping joints Formula 3 gel-like consistency keeps put Formulas 2 4 come convenient 4 ounce squeeze bottles Whatever needs formulas just right whatever youre gluing Stephens Akro/ Shepherd Continued Paoe 19 Use waxed paper protect plan glue spills Pin down /4-in-sq balsa stick bench runs along location marked jig shown plan Trial fit rib top spar trimming needed pin ribs balsa jig behind spar Using 9O triangle check rib perpendicular bench Place bottom spar rib cutouts use thick CyA cyanoacrylate glue joints youre building model sport flying youll probably want use open wing structure cap strips case glue piece /8 X 5/s-in strip edge 3/33 x /2-in balsa sheet trailing edge other hand youre planning use model sport Scale competition youll probably want fully sheeted wing case glue /8-in strip edge 3-in-wide balsa sheet ensure absolutely straight trailing edge use straightedge glue strip sheet Since trailing edge little over 36 long youll have splice some wood unless youre using 48in stock Attach trailing edge sheet ribs aliphatic glue butting x 5/s-in strip firmly rear ribs pinning place Position straightedge along front edge ribs trim overlength ribs until flush straightedge Slice two pieces /8-in balsa sheet 3/4 X 3/g x 36-in lengths leading edge strip Pin strip ribs glue CyA Using long sanding block bevel strip conform shape ribs will provide good gluing surface attaching leading edge sheeting panel Position 3-in-wide 3/32-in leading edge sheeting over ribs mark location sheet meets rear spar trim wedge sheet Use aliphatic glue rib contacts sheeting run bead Upgrade Vision 8P 8SP transmitters Enhance Vision 8P 8SP ATRCS 5P7 module new version 30 upgrade upgrade increases number setups available 8 allows aircraft naming failsafe positions Futaba PPM FM receivers Upgrade Vision 8SP get additional improvements including flap stick reverse cross trims elevator camber VTR enhancements just $9500 plus shipping tax applicable Well record re-load current setup information plus send hardcopy records order fill out form send transmitter less battery antenna RE module Control Systems LaboratorIes 238 So Hiliview Drive Milpitas CA 95035 408 946-4142 Name City State 30 upgrades ______ x $9500 ________ Local CA sales tax applicable Shipping $500 ground $1000 2nd day Total Acceptable payment methods COD add $375 checkMaster Card VISA Card # Expires2 34 Model Aviation Smooth n Easy low-viscosity epoxy finishing resin spreads thin & cures clear filling wood sheeting foam wings applying fiberglass cloth tape fuel proofing waterproofintj Like its n Easy DeHAVILLAND BEAVER GIANT SCALE 96 MAULE M51M6 ROCKET 114 SCALE 98 FAIRCHILD 24 GIANT SCALE 90 STINSON SR-B 1/5 SCALE 100 SPERRY MESSENGER 1/4 SCALE 60 thick CyA along 1/8-jfl leading edge strip Pin sheet along strip run bead thick CyA along spar curl sheet over ribs pin spar Cut wedge 3/37 sheet fill space between number 1 7 ribs glue place youre building open-frame wing cap-strip ribs remove panel both panels finished point draw straight line least 72 long workbench Mark position number 12 rib line pin tip jigs place Place wing panels line orienting rear edge bottom spar directly front line pin panels down centerline spars tip jig Shim center trailing edge panels inch pin securely bench Place straightedge top trailing edge shim latter four five places Firmly pin down trailing edge maintain straightness throughout remaining steps Once assembly firmly pinned down epoxy 114-in balsa wing spar filler place between spars Accurately fit /4-in balsa TEB /8-in trailing edge epoxy place Epoxy 1/8-in ply DB pieces either side spars filler piece Trim 3/33 top trailing edge sheet fit squarely against 1/8-in trailing edge secure panel aliphatic glue thick CyA Sand bevel top Is-in leading edge conform shape ribs glue 3/33 leading edge sheeting ribs just did bottom sheet however sheet area between number ribs time Make sure wing remains firmly pinned down before continuing next step Until verticals between ribs have glued spars still possible twist panel after step its virtually impossible Continued page 38 0 0 0 0 0 Wingspan 47Area 460 sq n z Assembly Time 6 hrs mae 1JLenght 42Weight 475-500 lb0 PRE-ASSEMBLED AND INSTALLED HAYES MOUNT NOSEGEAN B OZ HAYES TANK SULUVAN SKYLITE WHEELS SULLIVAN PUSHRODS CONTROL HORNS GAPLESS HINGES ALL AROUND June1992 35 fine kits include Preformed landing gear cut parts surfaces drawn rol horns Complete plans Fiberglass cowls pants Belicranks ity hand selected balsa Window acetate Screws ruction manual photopage order Call 800 327-7198 ext 10 Inquiries Call 208 773-9001 Catalog fine kits $400 STITS PLAYBOY 1/3 SCALE 88 yourself favor IKON NWST Kit n world wide finest scale kits WACO 10 1/5 SCALE 73 PLUG IN WINGS / ADVANCED FULL SYMETRICAL AIRFOIL / RATED FOR ALL MANEUVERS INCLUDING MAXIMUM 0 PULL UPS / CLEAN AERODYNAMIC DESIGN IS FAST STABLE AND EFFICIENT TM COMPLETELY ASSEMBLED & FINISHED OUT OF THE BOX NO GLUE PAINT OR COVERING REQUIRED INSTALL YOUR RADIO 35-46 ENGINE AND PROP AT THE FIELD COMPUTER DESIGNED & BUILT BY MIT AEROSPACE ENGINEERS INCREDIBLE FLIGHT PERFORMANCE AND QUALITY BUILTINI Hi-G introduces thebiUJIISHhUiI 0 Cs VISA & MC Accepted Orders & Info 602-788-5209 Hi G 2131 E Crocus Dr. Phoenix AZ 85022 Stephens Akro/Shepherd Continued Page 35 Glue verticals place Add top cap strips top center section sheet aft spars Epoxy ribs 1-A flush bottom number ribs Glue 1/8 X 3/8-ifl piy pieces leading edge tops flush top ribs 1-A Epoxy WBP 1-A ribs ply pieces leading edge Epoxy rear WBP top sheet Remove wing workbench turn over sheet bottom center section Using long sanding block finish sand 11s-in trailing edge flush I32 sheeting Cut 1/2 x 2-in trailing edge pieces two 15-in pieces being certain cut proper angle good fit both center section aileron position Lay piece waxed paper bench turn wing upside down press down firmly trailing edge trial fit 1/2 x 2-in trailing edge pieces against wing trailing edge should flush fit Make necessary adjustments glue seam CyA Repeat procedure other panel Cut remaining two trailing edge 1/2 x 2-in pieces length fit angle aileron joint attach pieces trailing edge noted above glue has dried mark aileron panel ball-point pen cut out ailerons using sharp blade straightedge Sand bevel aileron leading edge set ailerons aside havent already done decide point whether wing tip scale sport type build tip accordingly Tail surfaces worked out construction technique previous designs Its simple produces strong straight empennage construction information youll need shown plan questions arise during assembly close look section drawing should clear up Fuselage Begin gluing Is-in balsa sides Lite Ply doublers contact cement seal edges CyA Build right side directly over plan build second side atop first after covering sheet waxed paper Lite Ply less full /8 thick youll need shim forward area side /4-in built-up rear portion left side flush 1/s-in-sheet fuselage side Remove sides plan Separate sides pin down top view plan F-6 former tail post using inside lines plan guide Install former slots ply doubler glue place Install F-3 pin sides hold place glue Install F-2 before gluing place pull sides using pin rubberband persuaders across top secured engine mount firewall using method effectively seals front end fuel entrainment model structure After inserting bolts through firewall soldered wire across head slots epoxied wire liberally Continued page 40 C-130 HERKY-BIRD 130118 Wingspan515 87 Wing area 272sq 752sq Wing load 335 02 33 02 natruction manual included PLANS 3 sh $48 $68 115 scale nacellas available plans include model specs weight schedule scale source information 1/4 Scale BD-5D Wingspan Wing area Wing loading PLANS 4 sh Canopy air intakes & Rolled & postpaid /USAby PALMER PLANS 210-1/2 EL CAMINO DR Dept C BEVERLY HILLS CA 90212 310 274-2456 38 Model Aviation A-26BINVADER Scale112 70 5405 sq Wingspan Wing area Wing loading 229 twin 25s Instruction Manual Included PLANS 4 sh $58 Fiberglass cowls avallabls SIMPLY FUN 0000000 may well easiest-to-fly commercially available outdoor RIC aircraft Tom Atwood Editor Model Airplane News May 1992 issue AVAILABLE NOW ParaPlane Sport components included $395 Basic Kit Requires 2 Channel radio bafl & Charger $22995 $10 S/H charges NJ residents 7% sales tax 8 AA batteries required Electric R/C Corp cml 8OO-227-84Ob milE Penneauken NJFree Full Color Brochure 0810971 40 anginafor experiencad 645 5058 sq 33802 Experts whove reviewed tapes agreewhether youre experienced RCer beginner whos ready something straight level flying Wring Out just ticket THREE TAPES COVER IT ALL studying practicing three tapes sequence experienced flyers well beginners can attain kind aerobatic refinement weve admired watching pros tapes real-time split-screen imaging perfect blend Stephens Akro/Shepherd Continued Page 38 epoxied firewall Lite Ply slots Sig Kwik Set pulled sides hand until epoxy set Cut 114-in-sq balsa rear fuselage crosspieces glue place Note top pieces slightly longer bottom ones Glue diagonal braces place Install LGP epoxy sheet bottom inside Lite Ply doublers Glue Is-in sheet F- 10 place Remove fuselage plan position glue F-9 voice-over live sound gives Wring Out real edge over less-professionally produced videos progress will proof VALUE THAT CANT BE BEAT Best Wring Out series priced youll able own full set originals resorting low-quality copies Wring Out volumes dealers phone 1800 531-1784 CARL GOLDBERG order direct MODELS INC Install /i x 1/2-in top rear turtledeck stringers between formers F-6 F-9 Fit glue formers F-7 F-8 Glue Is-in medium-weight balsa sheet turtledeck sides Sand sheets flush 3Iis top stringers glue bottom layer top /4-in turtledeck sheet Pin some /2-in scrap balsa top longerons stabilizer position glue top F-b 1/4-in-sq tail post F-9 Finish sheeting turtledeck over stabilizer remove /2-in shim scraps Glue /4-in spruce braces between formers F-2 F-3 Now good time shape 118-in A-grain balsa sheet will cover corners fuselage top Cut sheet little longer necessary cover corners between formers wrap around some spray paint cans secure assembly rubberbands until dry Cut maple wing hold-down blocks corner fuselage opening install epoxy blocks dry place wing saddle true up fuselage centerline pin firmly place Cut three pieces 3/is dowel about 3 long drill /16 hole through wing ply hold-down plates maple block insert dowel Repeat procedure until four holes have drilled Remove three dowels unpin wing Tap maple blocks I4-20 tap check threads nylon bolt Drill holes wing plates 1/4 position wing fuselage bolt down Place waxed paper plastic wrap over wing center section formers F-3 F-6 position formers F3-A F6-A clamp clothespins Place Is-in saddle strip over sheeted wing pin down glue F3-A F-6A Position formers F-4 F-5 glue x /4-in strips between begin sheeting cabin section photos shows balsa sheeting wrapped around some paint cans form its curvature Continue sheeting until whole cabin section complete including hold-down tab front dowel bolt rear Sheet area between F-2 F-3 remove cabin section unbolt wing Install tubes throttle pushrod make provision smoke system installed Assemble install fuel tank optional smoke system tank Install bottom double /4-in sheet between F-2 F-3 along former FB bottom stringers Position landing gear drill mounting holes Shape balsa forward landing gear blend cowl former FB use illustration dashed line plan guide shaping channel Bolt engine spinner firewall Position cowl using straightedge along top side fairs Is-in top sheeting between F-2 F-3 Trim cowl necessary Epoxy hardwood cowl hold-down blocks F-2 replace cowl drill holes sheet metal screws through cowl cowl blocks Pack foam around fuel smoke system tanks glue /4-in-sq spruce corners doublers between F-2 F-3 Epoxy F-li F-lB place Fuel proof entire front end forward F-2 coating epoxy Build landing gear fairing /4-in Continued page 48 40 Model Aviation Its Wring Out aerobatic instruction series featuring Dave Patrick Stephens AkrolShepherd Continued Page 40 balsa Sand fairing flush EB forward block install 1/4-in dowel center Drill through dowel landing gear tap gear 4-40 bolt secure fairing make landing gear cuffs sanded some foam shape mounted piece Lite Ply scrap covered fiberglass epoxied epoxy dried hogged foam out fiberglass gave cuffs another coat epoxy inside out glued hardwood blocks landing gear fairing blocks attached cuffs sheet metal screws Covering finishing gave fuselage tail surfaces two coats Sig nitrate dope sanding off fuzz between coats covered structures Sig Koverall attached Koverall dty brushing nitrate through material wherever contacted nitrate-doped wood After installing gluing fin tightened covering using iron set medium heat Take care avoid excess heat Koverall since material tough could distort underlying structure simply going little too far tightening gave fuselage tail surfaces five coats nitrate dope painted Cheveron Perfect paint colors match Super MonoKote used wings Starting Williams Bros three-inch scale pilot turned likeness Ray Parker custom-made cap headphones shoulder straps cap made piece cotton painted blue nylon screening mesh /32 plywood band visor headphones balsa bag tie band neck strap Futaba radio set perfect shoulder straps painted instrument panel flat black dope cut out Gorham Model Products instruments glued Steve Durecki Fiberglass Specialties T&D makes cowl wheel pants pulls canopy butyrate sheet products highest quality Bob Obenberger Romco created Tru-Turn nose art Its almost exactly scale really puts finishing touch Akro found Bob Steve Durecki Ray Parker pleasant work think can objectively say best flying models including Lark TR-260 plan enter Scale contests set color photos suitable presentation folder available Jim Pepino Scale Plans Photo Service 48 Model Aviation Power easy starting power smooth take offs power intricate maneuvers Red Max 54 GAL TOTALmakes DRUM $MTengine come __alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs ___secret gredients keep engine last____ng longer ____________ running rheavy dty appmore power___ 25463fully ___33611any other ______41760 100% money back guaran tee com pletely sat isfied ___reason Red Max has power better idle _____19081432139312791145and better _____20161540150113871253 CUSTOM BLENDED FUEL INGREDIENTSGrandwear charTotalacteristics Available type engine use Call price Mm gallon boats cars helicopters speed ern scale scale kavan iginition 3000 than . Prices May Varyother fuel RED MAX PREMIUM FUEL fuel beginners & sport flyers should use Avail tn synthetic castor lend REDMAXO101676274168160917365 RED MAX 5123792890382974223833 RED MAX 1014301073104495885831981 RED MAX 12155511661135104293335241 REDMAXiS1679125912261125100838500 RED MAX RACING FUEL Trophy winner planes boats & cars two boat blends castor ok up 40% nltro RED MAX 202133137313361227109849890 _____ RED MAX 252406152414841362121958057 RED MAX 403237197719241766158282503 RED MAX 503790227922182036182398800 RED MAX 6043432581251223052064115097 RED MAX 6546202731265924402185123246 RED MAX 4-CYCLE FUEL Efimmmisa detonation & kIckback 4-cycle engInes smoother Idle power I0-4CYCLE154911621131103893032428 15-4 CYCLE1826 136913331223109540576 RED MAX HELICOPTER FUEL Extremely smooth ninning extra defosmer drk color special heavy nil hellcplm toHe9copler1578 11841152105894733611 ______ lSt-lelicopter1855 139113541243111341760 ______ RED MAX PERFORMANCE FUEL HIgh flash point hesvy oil use tuned pipes ductad tan & othe 5 Perfonnanca1302976950872781 lBPerforrsarae 1578118411521058947 IsPerforrsamnn 18551391135412431113 RED MAX PATTERN FUEL Pmven best fuel pattern engines using pumps tuned pipes 5 Pattern131296390387979124358 10 Pattern15501081102297887930142 15 Pattern190612891218110399234086 SUPER TIGER 3000 FUEL Best fuel super Tiger 2000-4000 engines ______ Super Tiger 3000 1430 1073104495885832479 RED MAX DIESEL FUEL Supeilor diesel back list popular demand customers BEARING TYPE BALL PLAIN PLEASE PRINT lTY STATE ZIP Order Form CALL OR USE ThIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OW ON ThE LEFT THE TOTAL ON RIGHT Freight tree qta gala No handling charge Freight collect drums Deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $375 per carton UPS shipments add $500 per carton hazardous materials tee OTYFUBC1E4GALCASE 24GAL6OGAL128GAL cidendMIXTIJGALSOALCAN PERGALPER GALPER GAL RED MAX FUEL Continued page 80 CARD TYPE AND NO EXPIRATION OATF ELDON J LIND CO #401 UIUUH Easiest hinge tool available $325 Finest Building Tools Available w SEND SELFADORESSED STAMPED EN VELOPE FOR CATALOG #101 EXTRA HANDS Makes covering easy $1775 3151 CARAVELLE HAVASU CITY AZ 86403 602 4537970 happen live near Ocala Florida consider paying visit Ray Parker fine craftsman gentleman version Stephens Akro would exist Contact Ray Leeward Air Ranch Ocala like enjoy crafting balsa-and-plywood models love aerobatic flying building Stephens Akro will time well spent bench model does Acknowledgements Bud Davisson Emily Zimmerman Ray Parker contributed some information article want publicly thank helping project come alive * Poor Mans Prop/Hughes Continued Page 63 Note small block prop hub raises prop off base allow insertion triangle prop held place conical nut prop balancer prop pitch gauge simple inexpensive construct Pitch measured slipping various triangles under prop until find bottoms base plate slot matches propeller angle will have construct triangles pitches wish measure Fortunately geometric basis pitch calculation pretty simple Ive reduced triangle dimensions rather using trigonometry angles Just plug numbers equation triangle base always has length 100 millimeters pitch 314 x dia x 100 ngle height mm example wish make triangle representing 7 pitch 4-in radius must multiply 2 get diameter use formula formula yields 28 millimeters height base always 100 millimeters Just construct 900 right triangle dimensions cardboard such found back paper tablets triangle 6-in pitch 3-in radius multiply 2 use formula would 32 millimeters 100 millimeters photos shows templates some pitch angles commonly use will want check least two points probably blade radius Make templates COMPOSITE SOLUTIONS--PO Ito 252 Haclet NJ 07730 CARBON FIBRE Tuned Exhaust Systems LOW RPM Pipes below 11000 STANDARD engines 40 90 size OSRossi Pico Webra Sc per Tigre others Performance Pipes LONG STROKE ENGINES 60 size OS OSHanno Special Webra YS YS-120 4 cycle Custom Pipes UC Speed Aerobatics other applications carrying Free Flight Competition Timers br Info call s 908 264-6693 till 10PM 1ST OUR PRODUCTS ARE OMPETITIVELY PRICED AGAINST ALUMINUM INPORTS Satcsfaction guaranteed money back need sure dont cost much dont take much time Some typical templates shown photos Shallow angles may require constructing triangle rectangle done 5 lh-in-pitch 3Ii 6-in-radius template template will come up bottom blade propeller being measured another photos Kyosho Electrics blade 8-in pitch other 81/2 easiest way correct unbalance make pitch both blades 81/4 splitting difference between 8 81/2 shimming back hub masking tape easier alternative beveling prop made wood Wood props can sanded filed proper hub angle Just sure keep hub surface flat want know whats going propellers youd best make purchase prop pitch gauge odel Aviation WiLire assembly before yuu bUllO rM tAY M Stephens Akro/Shepherd Continued Page 48 $lAiNrJG Nay SpecialGT GENERIXExpiresjune7 Foorrerly DOCS GENERIX FLY-ROD UlIro-Hi-Tec Fon Fly Special Airfoil Technology & Nerd Nodriog Bar Tiere Build 0-Tube Wiog Keeglas Soon & Geon Inclodeus Whnol Conloor Germ Balno &- Plysoood Skid Horderoro & Supor Lire Coveong Conrporirioo Arofrarne Kir ConporerRadionfMionoo$59 Fogine 34040 Full Sire Plan TAn OATOR2 Km rho Prier Ore holh Tnil Galonni Bror Oral Aroundt No Micro Nredndt NOT rho Paid Heaor Ornigord Cornhor-Srraronr & Elecronic Aoo Spor-r Plooo Will Pack Arnybadyr Lonoh SFuN 38 uREA 3ff \ -Z7SFEOAL PRICE 2 Flarernl $2995Z2Z~ABF CI4EAF SENSATIONSul Jr Soredy Likic Per Ho Fun-Flynn, Foon Wing Kovglo Boon Sapro Lilo __________________ Door Broovo Whool Hordonore & Oreor lorocrions Build 12 BR Doer Lor Ore Peico Fool 111 Blow 262035 Off 90% rho Cowynorior Huge Ainfoil-Plirs So Slow Toenpa FL 33615 Coo Walk Nrc er Irnocro FOeHiogrd Try 11813-854-lOTS SF424 4e ARE 770 SFOAL PRICE COO pEgro SC Ooroe 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NO OCR TEXT NO OCR TEXT ifications very attractive paint scheme Ray reduced full-length bubble canopy partial bubble raised turtledeck also slightly enlarged tail surfaces redesigned square tips Internally revised fuselage framework bit redesigned controls better feel optimal performance letter Ray wrote has built restored other aircraft Stephens remains favorite flies often Some readers may already familiar Ray Parkers creative talents super craftsmanship abilities 14 Model Aviation article about close copy Sperry Messenger December 1974 issue EAA publication Sport Aviation Ray used three-views information gleaned article Pete Bowers along some eyeball engineering guesstimation develop plans post-World War single-place Army biplane Ray began career aviation 1940 flying school Missoula Montana progressed Army Air Corp flying schools graduated photo-reconnaissance pilot flying P-38 photo planes Pacific theater World War II Three-quarters rear view model Differences between variant original Stephens Akro include raised turtledeck slightly enlarged tail surfaces Top Custom details turned Williams Bros 3-in scale pilot Ray Parkers likeness Bottom Canopy Fiber glass Specialties T&D Rays name done Presto vinyl stick-on lettering Above left original SuperTigre 90 installation included provision smoke system Above right Scale twin stacks made K&S brass tubing Bottom left brace wires tail surface wires secured bottom fuselage brass strips rudder horn twin elevator horns driven single servo Bottom right Archer male quick disconnects Catalogue #64-3038 soldered ends I64 music wire tail braces attachment fuselage tail surfaces STEPHENS AKRO B SHEPHERD % SHEET I6'Z 4 NICE FLYING PINNRT VER /MPRE5$VE CAP 3TRIP -3Q3PRuCE- 7 KLE z 5MEET Zx TE I C CD CD CD C LASER 200 PILOT LEO LOUDENSLAGER 1984 COLOR SCHEME SEE R-T CATALOG FOR COLOR PHOTOS SHOWING NOMENCLATURE ON AIRPLANE ODLO DID DONIPE TYPrOAL After war Ray studied universities Montana Indiana Columbia earning PhD geology moved career flying over world US Geological Survey now retired residential airport community Ocala Florida Ray recently restored Piper PA-22 converting Pacer writing next agenda RV-6 admirers Stephens Akro have requested airframe kits plane over years Ray has welded least 15 kits Several went Australia several US modelers shipped England decision replicate Rays Stephens based good looks midwing paint scheme also fact could built common off-the-shelf model materials would ensure light strong craft could aerobatics addition lot extra horsepower firewall Indeed model delivers good aerobatic performance fitted wide array engines tried SuperTigre 90 first few flights using throttle speed control found plane capable handling level power through aerobatic routine first flight model flew well full-scale prototype no need use trim levers transmitter line up Id done rolls vertical up rolls loops snaps knife-edge flight planning try stall slow flight engine flamed out tweaked open needle valve took off second flight model went straight ahead stall slow flight very stable no sign tip stalling check performance different power installation removed SuperTigre added Saito 80 GK COLOR SCHEME RED BLUE RC Stephens Akro Type Sport Scale Wingspan 721/2 inches Recommended engine size type Saito 80 GK Range 75 -90 two-stroke 80-120 four-stroke Number RC channels recommended Four Expected flying weight 9 lb 2 oz Type construction Built-up Type covering/finish recommended Sig Koverall MonoKote paint Cheveron Perfect GOLD BAND - K SCALE Aor0o I -c L -M AIRFOIL SECTIONS J FUSELAGE CROSSECTIONS F 0040 PIN DTDIPIDDITVPICOULASER 200 TOP VIEW & SECTIONS ROBERT C MORRISON PNBTE0 N GSA REPLA-TECH NYDNN,OGL III DUNG ALL P40008 RESENTED 16 Model Aviation GOLD BOND LASER 200 BOTTOM VIEW Full-Size Plans Available. Page 180 A______ _ 4 STEPHENSAKRO June1992 17 Left The foam wing panel core has cut up sections making set l/32pIy master ribs Right wing panels being assembled over piece Celotexm secured workbench trailing edge has shimmed prior attaching top sheeting four-stroke Hayes 60 mount remained place plane proved bit gung ho aerobatics withtheST 90 aware Saitos Open-frame wing has 900 bellcrank mounted Sig soldered clevis plywood rroveri ssueIevIor building technique achieves lightness strength plate Note Lite Ply frame crank cover structures have partially completed balances yet built onto tips shaft protrudes little farther SuperTigre fact recommend check engine selection against plans before cutting out Lite Ply doublers adjusting firewall slots needed keep spinner backplate flush front cowl plans indicate 75 90 size range two-stroke engines 80 120 range four-stroke ones think however model would fly quite well potent 65-size two-stroker provided kept weight under nine pounds Saito 80 four-stroker used 14 x 6 Master Airscrew prop has proven ideal airplanes nine-pound two-ounce flying weight engine runs 18 Model Aviation piy pens ior sirong orwara useiage DOX Iligni ne completed fuselage frame Stab will ft l/21fl gap between F-i Os Note 1/16 X l/ojfl strip glued top longeron base turtledeck side sheet Left Beginning construction removable provide base l/ain cabin area sheeting fle willy i-ni uui sirips servu UUlfl 10 eiign mormers ana eusa top sheeting wrapped around paint cans form curvature bottom blocking forward removable cabin section partially completed Note hold-down tab frontlanding gear has installed and extended top sheeting anchors section rearshaped Note smoker tank installation Full -Size Plans Available. Page 180 j iO1tfl3flH3ZII8V15 000 L9~D9 -o i LEET WINE -0rsteady during maneuvers making aerobatics pleasure smoke system Fm planning install should heighten enjoyment Construction Take time cut out kit parts before assembling major components gives good feel finished product minimizes mistakes makes scratch-building lot easier enjoyable Trace parts outlines plan affix wood using low-contact cement Wing achieve accurately tapered wing using built-up construction talented modeling buddy John Rimmer hot-wire wing panel out foam used make set /32 plywood rib patterns follows First laid out marked foam panel rib station using fence band saw keep cuts square cut slice foam rib station traced outline station foam slice 1/32 plywood carefully cut plywood exact shape foam After securing ply templates 3/33 balsa sheet using two thumbtacks ready cut out set ribs time invest making set master ribs will time well spent since can used future tapered-wing models Make sure ribs marked up position since wing progresses fully symmetrical semisymmetrical tips wing panels built upside down initial phase order keep ribs 9O top spar Select four straight /4-in-sq spruce sticks spars pin plan spar location Continued page 34 fairing block covering landing foam form landing gear cuff Fiberglass cuffs landing gear have gear has shaped hold- has shaped prior being covered faired fuselage held down blocks LG cuffs installed fiberglass cloth epoxy place sheet metal screws June1992 19 Hobbypoxy clear choice more hobbyists Thats because can depend Hobbypoxy hold up under difficult conditions Formulas 1 2 3 4 fast acting rapid curing super holding epoxy glues provide incredible bonding power can used filling nicks cracks gaping joints Formula 3 gel-like consistency keeps put Formulas 2 4 come convenient 4 ounce squeeze bottles Whatever needs formulas just right whatever youre gluing Stephens Akro/ Shepherd Continued Paoe 19 Use waxed paper protect plan glue spills Pin down /4-in-sq balsa stick bench runs along location marked jig shown plan Trial fit rib top spar trimming needed pin ribs balsa jig behind spar Using 9O triangle check rib perpendicular bench Place bottom spar rib cutouts use thick CyA cyanoacrylate glue joints youre building model sport flying youll probably want use open wing structure cap strips case glue piece /8 X 5/s-in strip edge 3/33 x /2-in balsa sheet trailing edge other hand youre planning use model sport Scale competition youll probably want fully sheeted wing case glue /8-in strip edge 3-in-wide balsa sheet ensure absolutely straight trailing edge use straightedge glue strip sheet Since trailing edge little over 36 long youll have splice some wood unless youre using 48in stock Attach trailing edge sheet ribs aliphatic glue butting x 5/s-in strip firmly rear ribs pinning place Position straightedge along front edge ribs trim overlength ribs until flush straightedge Slice two pieces /8-in balsa sheet 3/4 X 3/g x 36-in lengths leading edge strip Pin strip ribs glue CyA Using long sanding block bevel strip conform shape ribs will provide good gluing surface attaching leading edge sheeting panel Position 3-in-wide 3/32-in leading edge sheeting over ribs mark location sheet meets rear spar trim wedge sheet Use aliphatic glue rib contacts sheeting run bead Upgrade Vision 8P 8SP transmitters Enhance Vision 8P 8SP ATRCS 5P7 module new version 30 upgrade upgrade increases number setups available 8 allows aircraft naming failsafe positions Futaba PPM FM receivers Upgrade Vision 8SP get additional improvements including flap stick reverse cross trims elevator camber VTR enhancements just $9500 plus shipping tax applicable Well record re-load current setup information plus send hardcopy records order fill out form send transmitter less battery antenna RE module Control Systems LaboratorIes 238 So Hiliview Drive Milpitas CA 95035 408 946-4142 Name City State 30 upgrades ______ x $9500 ________ Local CA sales tax applicable Shipping $500 ground $1000 2nd day Total Acceptable payment methods COD add $375 checkMaster Card VISA Card # Expires2 34 Model Aviation Smooth n Easy low-viscosity epoxy finishing resin spreads thin & cures clear filling wood sheeting foam wings applying fiberglass cloth tape fuel proofing waterproofintj Like its n Easy DeHAVILLAND BEAVER GIANT SCALE 96 MAULE M51M6 ROCKET 114 SCALE 98 FAIRCHILD 24 GIANT SCALE 90 STINSON SR-B 1/5 SCALE 100 SPERRY MESSENGER 1/4 SCALE 60 thick CyA along 1/8-jfl leading edge strip Pin sheet along strip run bead thick CyA along spar curl sheet over ribs pin spar Cut wedge 3/37 sheet fill space between number 1 7 ribs glue place youre building open-frame wing cap-strip ribs remove panel both panels finished point draw straight line least 72 long workbench Mark position number 12 rib line pin tip jigs place Place wing panels line orienting rear edge bottom spar directly front line pin panels down centerline spars tip jig Shim center trailing edge panels inch pin securely bench Place straightedge top trailing edge shim latter four five places Firmly pin down trailing edge maintain straightness throughout remaining steps Once assembly firmly pinned down epoxy 114-in balsa wing spar filler place between spars Accurately fit /4-in balsa TEB /8-in trailing edge epoxy place Epoxy 1/8-in ply DB pieces either side spars filler piece Trim 3/33 top trailing edge sheet fit squarely against 1/8-in trailing edge secure panel aliphatic glue thick CyA Sand bevel top Is-in leading edge conform shape ribs glue 3/33 leading edge sheeting ribs just did bottom sheet however sheet area between number ribs time Make sure wing remains firmly pinned down before continuing next step Until verticals between ribs have glued spars still possible twist panel after step its virtually impossible Continued page 38 0 0 0 0 0 Wingspan 47Area 460 sq n z Assembly Time 6 hrs mae 1JLenght 42Weight 475-500 lb0 PRE-ASSEMBLED AND INSTALLED HAYES MOUNT NOSEGEAN B OZ HAYES TANK SULUVAN SKYLITE WHEELS SULLIVAN PUSHRODS CONTROL HORNS GAPLESS HINGES ALL AROUND June1992 35 fine kits include Preformed landing gear cut parts surfaces drawn rol horns Complete plans Fiberglass cowls pants Belicranks ity hand selected balsa Window acetate Screws ruction manual photopage order Call 800 327-7198 ext 10 Inquiries Call 208 773-9001 Catalog fine kits $400 STITS PLAYBOY 1/3 SCALE 88 yourself favor IKON NWST Kit n world wide finest scale kits WACO 10 1/5 SCALE 73 PLUG IN WINGS / ADVANCED FULL SYMETRICAL AIRFOIL / RATED FOR ALL MANEUVERS INCLUDING MAXIMUM 0 PULL UPS / CLEAN AERODYNAMIC DESIGN IS FAST STABLE AND EFFICIENT TM COMPLETELY ASSEMBLED & FINISHED OUT OF THE BOX NO GLUE PAINT OR COVERING REQUIRED INSTALL YOUR RADIO 35-46 ENGINE AND PROP AT THE FIELD COMPUTER DESIGNED & BUILT BY MIT AEROSPACE ENGINEERS INCREDIBLE FLIGHT PERFORMANCE AND QUALITY BUILTINI Hi-G introduces thebiUJIISHhUiI 0 Cs VISA & MC Accepted Orders & Info 602-788-5209 Hi G 2131 E Crocus Dr. Phoenix AZ 85022 Stephens Akro/Shepherd Continued Page 35 Glue verticals place Add top cap strips top center section sheet aft spars Epoxy ribs 1-A flush bottom number ribs Glue 1/8 X 3/8-ifl piy pieces leading edge tops flush top ribs 1-A Epoxy WBP 1-A ribs ply pieces leading edge Epoxy rear WBP top sheet Remove wing workbench turn over sheet bottom center section Using long sanding block finish sand 11s-in trailing edge flush I32 sheeting Cut 1/2 x 2-in trailing edge pieces two 15-in pieces being certain cut proper angle good fit both center section aileron position Lay piece waxed paper bench turn wing upside down press down firmly trailing edge trial fit 1/2 x 2-in trailing edge pieces against wing trailing edge should flush fit Make necessary adjustments glue seam CyA Repeat procedure other panel Cut remaining two trailing edge 1/2 x 2-in pieces length fit angle aileron joint attach pieces trailing edge noted above glue has dried mark aileron panel ball-point pen cut out ailerons using sharp blade straightedge Sand bevel aileron leading edge set ailerons aside havent already done decide point whether wing tip scale sport type build tip accordingly Tail surfaces worked out construction technique previous designs Its simple produces strong straight empennage construction information youll need shown plan questions arise during assembly close look section drawing should clear up Fuselage Begin gluing Is-in balsa sides Lite Ply doublers contact cement seal edges CyA Build right side directly over plan build second side atop first after covering sheet waxed paper Lite Ply less full /8 thick youll need shim forward area side /4-in built-up rear portion left side flush 1/s-in-sheet fuselage side Remove sides plan Separate sides pin down top view plan F-6 former tail post using inside lines plan guide Install former slots ply doubler glue place Install F-3 pin sides hold place glue Install F-2 before gluing place pull sides using pin rubberband persuaders across top secured engine mount firewall using method effectively seals front end fuel entrainment model structure After inserting bolts through firewall soldered wire across head slots epoxied wire liberally Continued page 40 C-130 HERKY-BIRD 130118 Wingspan515 87 Wing area 272sq 752sq Wing load 335 02 33 02 natruction manual included PLANS 3 sh $48 $68 115 scale nacellas available plans include model specs weight schedule scale source information 1/4 Scale BD-5D Wingspan Wing area Wing loading PLANS 4 sh Canopy air intakes & Rolled & postpaid /USAby PALMER PLANS 210-1/2 EL CAMINO DR Dept C BEVERLY HILLS CA 90212 310 274-2456 38 Model Aviation A-26BINVADER Scale112 70 5405 sq Wingspan Wing area Wing loading 229 twin 25s Instruction Manual Included PLANS 4 sh $58 Fiberglass cowls avallabls SIMPLY FUN 0000000 may well easiest-to-fly commercially available outdoor RIC aircraft Tom Atwood Editor Model Airplane News May 1992 issue AVAILABLE NOW ParaPlane Sport components included $395 Basic Kit Requires 2 Channel radio bafl & Charger $22995 $10 S/H charges NJ residents 7% sales tax 8 AA batteries required Electric R/C Corp cml 8OO-227-84Ob milE Penneauken NJFree Full Color Brochure 0810971 40 anginafor experiencad 645 5058 sq 33802 Experts whove reviewed tapes agreewhether youre experienced RCer beginner whos ready something straight level flying Wring Out just ticket THREE TAPES COVER IT ALL studying practicing three tapes sequence experienced flyers well beginners can attain kind aerobatic refinement weve admired watching pros tapes real-time split-screen imaging perfect blend Stephens Akro/Shepherd Continued Page 38 epoxied firewall Lite Ply slots Sig Kwik Set pulled sides hand until epoxy set Cut 114-in-sq balsa rear fuselage crosspieces glue place Note top pieces slightly longer bottom ones Glue diagonal braces place Install LGP epoxy sheet bottom inside Lite Ply doublers Glue Is-in sheet F- 10 place Remove fuselage plan position glue F-9 voice-over live sound gives Wring Out real edge over less-professionally produced videos progress will proof VALUE THAT CANT BE BEAT Best Wring Out series priced youll able own full set originals resorting low-quality copies Wring Out volumes dealers phone 1800 531-1784 CARL GOLDBERG order direct MODELS INC Install /i x 1/2-in top rear turtledeck stringers between formers F-6 F-9 Fit glue formers F-7 F-8 Glue Is-in medium-weight balsa sheet turtledeck sides Sand sheets flush 3Iis top stringers glue bottom layer top /4-in turtledeck sheet Pin some /2-in scrap balsa top longerons stabilizer position glue top F-b 1/4-in-sq tail post F-9 Finish sheeting turtledeck over stabilizer remove /2-in shim scraps Glue /4-in spruce braces between formers F-2 F-3 Now good time shape 118-in A-grain balsa sheet will cover corners fuselage top Cut sheet little longer necessary cover corners between formers wrap around some spray paint cans secure assembly rubberbands until dry Cut maple wing hold-down blocks corner fuselage opening install epoxy blocks dry place wing saddle true up fuselage centerline pin firmly place Cut three pieces 3/is dowel about 3 long drill /16 hole through wing ply hold-down plates maple block insert dowel Repeat procedure until four holes have drilled Remove three dowels unpin wing Tap maple blocks I4-20 tap check threads nylon bolt Drill holes wing plates 1/4 position wing fuselage bolt down Place waxed paper plastic wrap over wing center section formers F-3 F-6 position formers F3-A F6-A clamp clothespins Place Is-in saddle strip over sheeted wing pin down glue F3-A F-6A Position formers F-4 F-5 glue x /4-in strips between begin sheeting cabin section photos shows balsa sheeting wrapped around some paint cans form its curvature Continue sheeting until whole cabin section complete including hold-down tab front dowel bolt rear Sheet area between F-2 F-3 remove cabin section unbolt wing Install tubes throttle pushrod make provision smoke system installed Assemble install fuel tank optional smoke system tank Install bottom double /4-in sheet between F-2 F-3 along former FB bottom stringers Position landing gear drill mounting holes Shape balsa forward landing gear blend cowl former FB use illustration dashed line plan guide shaping channel Bolt engine spinner firewall Position cowl using straightedge along top side fairs Is-in top sheeting between F-2 F-3 Trim cowl necessary Epoxy hardwood cowl hold-down blocks F-2 replace cowl drill holes sheet metal screws through cowl cowl blocks Pack foam around fuel smoke system tanks glue /4-in-sq spruce corners doublers between F-2 F-3 Epoxy F-li F-lB place Fuel proof entire front end forward F-2 coating epoxy Build landing gear fairing /4-in Continued page 48 40 Model Aviation Its Wring Out aerobatic instruction series featuring Dave Patrick Stephens AkrolShepherd Continued Page 40 balsa Sand fairing flush EB forward block install 1/4-in dowel center Drill through dowel landing gear tap gear 4-40 bolt secure fairing make landing gear cuffs sanded some foam shape mounted piece Lite Ply scrap covered fiberglass epoxied epoxy dried hogged foam out fiberglass gave cuffs another coat epoxy inside out glued hardwood blocks landing gear fairing blocks attached cuffs sheet metal screws Covering finishing gave fuselage tail surfaces two coats Sig nitrate dope sanding off fuzz between coats covered structures Sig Koverall attached Koverall dty brushing nitrate through material wherever contacted nitrate-doped wood After installing gluing fin tightened covering using iron set medium heat Take care avoid excess heat Koverall since material tough could distort underlying structure simply going little too far tightening gave fuselage tail surfaces five coats nitrate dope painted Cheveron Perfect paint colors match Super MonoKote used wings Starting Williams Bros three-inch scale pilot turned likeness Ray Parker custom-made cap headphones shoulder straps cap made piece cotton painted blue nylon screening mesh /32 plywood band visor headphones balsa bag tie band neck strap Futaba radio set perfect shoulder straps painted instrument panel flat black dope cut out Gorham Model Products instruments glued Steve Durecki Fiberglass Specialties T&D makes cowl wheel pants pulls canopy butyrate sheet products highest quality Bob Obenberger Romco created Tru-Turn nose art Its almost exactly scale really puts finishing touch Akro found Bob Steve Durecki Ray Parker pleasant work think can objectively say best flying models including Lark TR-260 plan enter Scale contests set color photos suitable presentation folder available Jim Pepino Scale Plans Photo Service 48 Model Aviation Power easy starting power smooth take offs power intricate maneuvers Red Max 54 GAL TOTALmakes DRUM $MTengine come __alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs ___secret gredients keep engine last____ng longer ____________ running rheavy dty appmore power___ 25463fully ___33611any other ______41760 100% money back guaran tee com pletely sat isfied ___reason Red Max has power better idle _____19081432139312791145and better _____20161540150113871253 CUSTOM BLENDED FUEL INGREDIENTSGrandwear charTotalacteristics Available type engine use Call price Mm gallon boats cars helicopters speed ern scale scale kavan iginition 3000 than . Prices May Varyother fuel RED MAX PREMIUM FUEL fuel beginners & sport flyers should use Avail tn synthetic castor lend REDMAXO101676274168160917365 RED MAX 5123792890382974223833 RED MAX 1014301073104495885831981 RED MAX 12155511661135104293335241 REDMAXiS1679125912261125100838500 RED MAX RACING FUEL Trophy winner planes boats & cars two boat blends castor ok up 40% nltro RED MAX 202133137313361227109849890 _____ RED MAX 252406152414841362121958057 RED MAX 403237197719241766158282503 RED MAX 503790227922182036182398800 RED MAX 6043432581251223052064115097 RED MAX 6546202731265924402185123246 RED MAX 4-CYCLE FUEL Efimmmisa detonation & kIckback 4-cycle engInes smoother Idle power I0-4CYCLE154911621131103893032428 15-4 CYCLE1826 136913331223109540576 RED MAX HELICOPTER FUEL Extremely smooth ninning extra defosmer drk color special heavy nil hellcplm toHe9copler1578 11841152105894733611 ______ lSt-lelicopter1855 139113541243111341760 ______ RED MAX PERFORMANCE FUEL HIgh flash point hesvy oil use tuned pipes ductad tan & othe 5 Perfonnanca1302976950872781 lBPerforrsarae 1578118411521058947 IsPerforrsamnn 18551391135412431113 RED MAX PATTERN FUEL Pmven best fuel pattern engines using pumps tuned pipes 5 Pattern131296390387979124358 10 Pattern15501081102297887930142 15 Pattern190612891218110399234086 SUPER TIGER 3000 FUEL Best fuel super Tiger 2000-4000 engines ______ Super Tiger 3000 1430 1073104495885832479 RED MAX DIESEL FUEL Supeilor diesel back list popular demand customers BEARING TYPE BALL PLAIN PLEASE PRINT lTY STATE ZIP Order Form CALL OR USE ThIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OW ON ThE LEFT THE TOTAL ON RIGHT Freight tree qta gala No handling charge Freight collect drums Deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $375 per carton UPS shipments add $500 per carton hazardous materials tee OTYFUBC1E4GALCASE 24GAL6OGAL128GAL cidendMIXTIJGALSOALCAN PERGALPER GALPER GAL RED MAX FUEL Continued page 80 CARD TYPE AND NO EXPIRATION OATF ELDON J LIND CO #401 UIUUH Easiest hinge tool available $325 Finest Building Tools Available w SEND SELFADORESSED STAMPED EN VELOPE FOR CATALOG #101 EXTRA HANDS Makes covering easy $1775 3151 CARAVELLE HAVASU CITY AZ 86403 602 4537970 happen live near Ocala Florida consider paying visit Ray Parker fine craftsman gentleman version Stephens Akro would exist Contact Ray Leeward Air Ranch Ocala like enjoy crafting balsa-and-plywood models love aerobatic flying building Stephens Akro will time well spent bench model does Acknowledgements Bud Davisson Emily Zimmerman Ray Parker contributed some information article want publicly thank helping project come alive * Poor Mans Prop/Hughes Continued Page 63 Note small block prop hub raises prop off base allow insertion triangle prop held place conical nut prop balancer prop pitch gauge simple inexpensive construct Pitch measured slipping various triangles under prop until find bottoms base plate slot matches propeller angle will have construct triangles pitches wish measure Fortunately geometric basis pitch calculation pretty simple Ive reduced triangle dimensions rather using trigonometry angles Just plug numbers equation triangle base always has length 100 millimeters pitch 314 x dia x 100 ngle height mm example wish make triangle representing 7 pitch 4-in radius must multiply 2 get diameter use formula formula yields 28 millimeters height base always 100 millimeters Just construct 900 right triangle dimensions cardboard such found back paper tablets triangle 6-in pitch 3-in radius multiply 2 use formula would 32 millimeters 100 millimeters photos shows templates some pitch angles commonly use will want check least two points probably blade radius Make templates COMPOSITE SOLUTIONS--PO Ito 252 Haclet NJ 07730 CARBON FIBRE Tuned Exhaust Systems LOW RPM Pipes below 11000 STANDARD engines 40 90 size OSRossi Pico Webra Sc per Tigre others Performance Pipes LONG STROKE ENGINES 60 size OS OSHanno Special Webra YS YS-120 4 cycle Custom Pipes UC Speed Aerobatics other applications carrying Free Flight Competition Timers br Info call s 908 264-6693 till 10PM 1ST OUR PRODUCTS ARE OMPETITIVELY PRICED AGAINST ALUMINUM INPORTS Satcsfaction guaranteed money back need sure dont cost much dont take much time Some typical templates shown photos Shallow angles may require constructing triangle rectangle done 5 lh-in-pitch 3Ii 6-in-radius template template will come up bottom blade propeller being measured another photos Kyosho Electrics blade 8-in pitch other 81/2 easiest way correct unbalance make pitch both blades 81/4 splitting difference between 8 81/2 shimming back hub masking tape easier alternative beveling prop made wood Wood props can sanded filed proper hub angle Just sure keep hub surface flat want know whats going propellers youd best make purchase prop pitch gauge odel Aviation WiLire assembly before yuu bUllO rM tAY M Stephens Akro/Shepherd Continued Page 48 $lAiNrJG Nay SpecialGT GENERIXExpiresjune7 Foorrerly DOCS GENERIX FLY-ROD UlIro-Hi-Tec Fon Fly Special Airfoil Technology & Nerd Nodriog Bar Tiere Build 0-Tube Wiog Keeglas Soon & Geon Inclodeus Whnol Conloor Germ Balno &- Plysoood Skid Horderoro & Supor Lire Coveong Conrporirioo Arofrarne Kir ConporerRadionfMionoo$59 Fogine 34040 Full Sire Plan TAn OATOR2 Km rho Prier Ore holh Tnil Galonni Bror Oral Aroundt No Micro Nredndt NOT rho Paid Heaor Ornigord Cornhor-Srraronr & Elecronic Aoo Spor-r Plooo Will Pack Arnybadyr Lonoh SFuN 38 uREA 3ff \ -Z7SFEOAL PRICE 2 Flarernl $2995Z2Z~ABF CI4EAF SENSATIONSul Jr Soredy Likic Per Ho Fun-Flynn, Foon Wing Kovglo Boon Sapro Lilo __________________ Door Broovo Whool Hordonore & Oreor lorocrions Build 12 BR Doer Lor Ore Peico Fool 111 Blow 262035 Off 90% rho Cowynorior Huge Ainfoil-Plirs So Slow Toenpa FL 33615 Coo Walk Nrc er Irnocro FOeHiogrd Try 11813-854-lOTS SF424 4e ARE 770 SFOAL PRICE COO pEgro SC Ooroe 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NO OCR TEXT NO OCR TEXT ifications very attractive paint scheme Ray reduced full-length bubble canopy partial bubble raised turtledeck also slightly enlarged tail surfaces redesigned square tips Internally revised fuselage framework bit redesigned controls better feel optimal performance letter Ray wrote has built restored other aircraft Stephens remains favorite flies often Some readers may already familiar Ray Parkers creative talents super craftsmanship abilities 14 Model Aviation article about close copy Sperry Messenger December 1974 issue EAA publication Sport Aviation Ray used three-views information gleaned article Pete Bowers along some eyeball engineering guesstimation develop plans post-World War single-place Army biplane Ray began career aviation 1940 flying school Missoula Montana progressed Army Air Corp flying schools graduated photo-reconnaissance pilot flying P-38 photo planes Pacific theater World War II Three-quarters rear view model Differences between variant original Stephens Akro include raised turtledeck slightly enlarged tail surfaces Top Custom details turned Williams Bros 3-in scale pilot Ray Parkers likeness Bottom Canopy Fiber glass Specialties T&D Rays name done Presto vinyl stick-on lettering Above left original SuperTigre 90 installation included provision smoke system Above right Scale twin stacks made K&S brass tubing Bottom left brace wires tail surface wires secured bottom fuselage brass strips rudder horn twin elevator horns driven single servo Bottom right Archer male quick disconnects Catalogue #64-3038 soldered ends I64 music wire tail braces attachment fuselage tail surfaces STEPHENS AKRO B SHEPHERD % SHEET I6'Z 4 NICE FLYING PINNRT VER /MPRE5$VE CAP 3TRIP -3Q3PRuCE- 7 KLE z 5MEET Zx TE I C CD CD CD C LASER 200 PILOT LEO LOUDENSLAGER 1984 COLOR SCHEME SEE R-T CATALOG FOR COLOR PHOTOS SHOWING NOMENCLATURE ON AIRPLANE ODLO DID DONIPE TYPrOAL After war Ray studied universities Montana Indiana Columbia earning PhD geology moved career flying over world US Geological Survey now retired residential airport community Ocala Florida Ray recently restored Piper PA-22 converting Pacer writing next agenda RV-6 admirers Stephens Akro have requested airframe kits plane over years Ray has welded least 15 kits Several went Australia several US modelers shipped England decision replicate Rays Stephens based good looks midwing paint scheme also fact could built common off-the-shelf model materials would ensure light strong craft could aerobatics addition lot extra horsepower firewall Indeed model delivers good aerobatic performance fitted wide array engines tried SuperTigre 90 first few flights using throttle speed control found plane capable handling level power through aerobatic routine first flight model flew well full-scale prototype no need use trim levers transmitter line up Id done rolls vertical up rolls loops snaps knife-edge flight planning try stall slow flight engine flamed out tweaked open needle valve took off second flight model went straight ahead stall slow flight very stable no sign tip stalling check performance different power installation removed SuperTigre added Saito 80 GK COLOR SCHEME RED BLUE RC Stephens Akro Type Sport Scale Wingspan 721/2 inches Recommended engine size type Saito 80 GK Range 75 -90 two-stroke 80-120 four-stroke Number RC channels recommended Four Expected flying weight 9 lb 2 oz Type construction Built-up Type covering/finish recommended Sig Koverall MonoKote paint Cheveron Perfect GOLD BAND - K SCALE Aor0o I -c L -M AIRFOIL SECTIONS J FUSELAGE CROSSECTIONS F 0040 PIN DTDIPIDDITVPICOULASER 200 TOP VIEW & SECTIONS ROBERT C MORRISON PNBTE0 N GSA REPLA-TECH NYDNN,OGL III DUNG ALL P40008 RESENTED 16 Model Aviation GOLD BOND LASER 200 BOTTOM VIEW Full-Size Plans Available. Page 180 A______ _ 4 STEPHENSAKRO June1992 17 Left The foam wing panel core has cut up sections making set l/32pIy master ribs Right wing panels being assembled over piece Celotexm secured workbench trailing edge has shimmed prior attaching top sheeting four-stroke Hayes 60 mount remained place plane proved bit gung ho aerobatics withtheST 90 aware Saitos Open-frame wing has 900 bellcrank mounted Sig soldered clevis plywood rroveri ssueIevIor building technique achieves lightness strength plate Note Lite Ply frame crank cover structures have partially completed balances yet built onto tips shaft protrudes little farther SuperTigre fact recommend check engine selection against plans before cutting out Lite Ply doublers adjusting firewall slots needed keep spinner backplate flush front cowl plans indicate 75 90 size range two-stroke engines 80 120 range four-stroke ones think however model would fly quite well potent 65-size two-stroker provided kept weight under nine pounds Saito 80 four-stroker used 14 x 6 Master Airscrew prop has proven ideal airplanes nine-pound two-ounce flying weight engine runs 18 Model Aviation piy pens ior sirong orwara useiage DOX Iligni ne completed fuselage frame Stab will ft l/21fl gap between F-i Os Note 1/16 X l/ojfl strip glued top longeron base turtledeck side sheet Left Beginning construction removable provide base l/ain cabin area sheeting fle willy i-ni uui sirips servu UUlfl 10 eiign mormers ana eusa top sheeting wrapped around paint cans form curvature bottom blocking forward removable cabin section partially completed Note hold-down tab frontlanding gear has installed and extended top sheeting anchors section rearshaped Note smoker tank installation Full -Size Plans Available. Page 180 j iO1tfl3flH3ZII8V15 000 L9~D9 -o i LEET WINE -0rsteady during maneuvers making aerobatics pleasure smoke system Fm planning install should heighten enjoyment Construction Take time cut out kit parts before assembling major components gives good feel finished product minimizes mistakes makes scratch-building lot easier enjoyable Trace parts outlines plan affix wood using low-contact cement Wing achieve accurately tapered wing using built-up construction talented modeling buddy John Rimmer hot-wire wing panel out foam used make set /32 plywood rib patterns follows First laid out marked foam panel rib station using fence band saw keep cuts square cut slice foam rib station traced outline station foam slice 1/32 plywood carefully cut plywood exact shape foam After securing ply templates 3/33 balsa sheet using two thumbtacks ready cut out set ribs time invest making set master ribs will time well spent since can used future tapered-wing models Make sure ribs marked up position since wing progresses fully symmetrical semisymmetrical tips wing panels built upside down initial phase order keep ribs 9O top spar Select four straight /4-in-sq spruce sticks spars pin plan spar location Continued page 34 fairing block covering landing foam form landing gear cuff Fiberglass cuffs landing gear have gear has shaped hold- has shaped prior being covered faired fuselage held down blocks LG cuffs installed fiberglass cloth epoxy place sheet metal screws June1992 19 Hobbypoxy clear choice more hobbyists Thats because can depend Hobbypoxy hold up under difficult conditions Formulas 1 2 3 4 fast acting rapid curing super holding epoxy glues provide incredible bonding power can used filling nicks cracks gaping joints Formula 3 gel-like consistency keeps put Formulas 2 4 come convenient 4 ounce squeeze bottles Whatever needs formulas just right whatever youre gluing Stephens Akro/ Shepherd Continued Paoe 19 Use waxed paper protect plan glue spills Pin down /4-in-sq balsa stick bench runs along location marked jig shown plan Trial fit rib top spar trimming needed pin ribs balsa jig behind spar Using 9O triangle check rib perpendicular bench Place bottom spar rib cutouts use thick CyA cyanoacrylate glue joints youre building model sport flying youll probably want use open wing structure cap strips case glue piece /8 X 5/s-in strip edge 3/33 x /2-in balsa sheet trailing edge other hand youre planning use model sport Scale competition youll probably want fully sheeted wing case glue /8-in strip edge 3-in-wide balsa sheet ensure absolutely straight trailing edge use straightedge glue strip sheet Since trailing edge little over 36 long youll have splice some wood unless youre using 48in stock Attach trailing edge sheet ribs aliphatic glue butting x 5/s-in strip firmly rear ribs pinning place Position straightedge along front edge ribs trim overlength ribs until flush straightedge Slice two pieces /8-in balsa sheet 3/4 X 3/g x 36-in lengths leading edge strip Pin strip ribs glue CyA Using long sanding block bevel strip conform shape ribs will provide good gluing surface attaching leading edge sheeting panel Position 3-in-wide 3/32-in leading edge sheeting over ribs mark location sheet meets rear spar trim wedge sheet Use aliphatic glue rib contacts sheeting run bead Upgrade Vision 8P 8SP transmitters Enhance Vision 8P 8SP ATRCS 5P7 module new version 30 upgrade upgrade increases number setups available 8 allows aircraft naming failsafe positions Futaba PPM FM receivers Upgrade Vision 8SP get additional improvements including flap stick reverse cross trims elevator camber VTR enhancements just $9500 plus shipping tax applicable Well record re-load current setup information plus send hardcopy records order fill out form send transmitter less battery antenna RE module Control Systems LaboratorIes 238 So Hiliview Drive Milpitas CA 95035 408 946-4142 Name City State 30 upgrades ______ x $9500 ________ Local CA sales tax applicable Shipping $500 ground $1000 2nd day Total Acceptable payment methods COD add $375 checkMaster Card VISA Card # Expires2 34 Model Aviation Smooth n Easy low-viscosity epoxy finishing resin spreads thin & cures clear filling wood sheeting foam wings applying fiberglass cloth tape fuel proofing waterproofintj Like its n Easy DeHAVILLAND BEAVER GIANT SCALE 96 MAULE M51M6 ROCKET 114 SCALE 98 FAIRCHILD 24 GIANT SCALE 90 STINSON SR-B 1/5 SCALE 100 SPERRY MESSENGER 1/4 SCALE 60 thick CyA along 1/8-jfl leading edge strip Pin sheet along strip run bead thick CyA along spar curl sheet over ribs pin spar Cut wedge 3/37 sheet fill space between number 1 7 ribs glue place youre building open-frame wing cap-strip ribs remove panel both panels finished point draw straight line least 72 long workbench Mark position number 12 rib line pin tip jigs place Place wing panels line orienting rear edge bottom spar directly front line pin panels down centerline spars tip jig Shim center trailing edge panels inch pin securely bench Place straightedge top trailing edge shim latter four five places Firmly pin down trailing edge maintain straightness throughout remaining steps Once assembly firmly pinned down epoxy 114-in balsa wing spar filler place between spars Accurately fit /4-in balsa TEB /8-in trailing edge epoxy place Epoxy 1/8-in ply DB pieces either side spars filler piece Trim 3/33 top trailing edge sheet fit squarely against 1/8-in trailing edge secure panel aliphatic glue thick CyA Sand bevel top Is-in leading edge conform shape ribs glue 3/33 leading edge sheeting ribs just did bottom sheet however sheet area between number ribs time Make sure wing remains firmly pinned down before continuing next step Until verticals between ribs have glued spars still possible twist panel after step its virtually impossible Continued page 38 0 0 0 0 0 Wingspan 47Area 460 sq n z Assembly Time 6 hrs mae 1JLenght 42Weight 475-500 lb0 PRE-ASSEMBLED AND INSTALLED HAYES MOUNT NOSEGEAN B OZ HAYES TANK SULUVAN SKYLITE WHEELS SULLIVAN PUSHRODS CONTROL HORNS GAPLESS HINGES ALL AROUND June1992 35 fine kits include Preformed landing gear cut parts surfaces drawn rol horns Complete plans Fiberglass cowls pants Belicranks ity hand selected balsa Window acetate Screws ruction manual photopage order Call 800 327-7198 ext 10 Inquiries Call 208 773-9001 Catalog fine kits $400 STITS PLAYBOY 1/3 SCALE 88 yourself favor IKON NWST Kit n world wide finest scale kits WACO 10 1/5 SCALE 73 PLUG IN WINGS / ADVANCED FULL SYMETRICAL AIRFOIL / RATED FOR ALL MANEUVERS INCLUDING MAXIMUM 0 PULL UPS / CLEAN AERODYNAMIC DESIGN IS FAST STABLE AND EFFICIENT TM COMPLETELY ASSEMBLED & FINISHED OUT OF THE BOX NO GLUE PAINT OR COVERING REQUIRED INSTALL YOUR RADIO 35-46 ENGINE AND PROP AT THE FIELD COMPUTER DESIGNED & BUILT BY MIT AEROSPACE ENGINEERS INCREDIBLE FLIGHT PERFORMANCE AND QUALITY BUILTINI Hi-G introduces thebiUJIISHhUiI 0 Cs VISA & MC Accepted Orders & Info 602-788-5209 Hi G 2131 E Crocus Dr. Phoenix AZ 85022 Stephens Akro/Shepherd Continued Page 35 Glue verticals place Add top cap strips top center section sheet aft spars Epoxy ribs 1-A flush bottom number ribs Glue 1/8 X 3/8-ifl piy pieces leading edge tops flush top ribs 1-A Epoxy WBP 1-A ribs ply pieces leading edge Epoxy rear WBP top sheet Remove wing workbench turn over sheet bottom center section Using long sanding block finish sand 11s-in trailing edge flush I32 sheeting Cut 1/2 x 2-in trailing edge pieces two 15-in pieces being certain cut proper angle good fit both center section aileron position Lay piece waxed paper bench turn wing upside down press down firmly trailing edge trial fit 1/2 x 2-in trailing edge pieces against wing trailing edge should flush fit Make necessary adjustments glue seam CyA Repeat procedure other panel Cut remaining two trailing edge 1/2 x 2-in pieces length fit angle aileron joint attach pieces trailing edge noted above glue has dried mark aileron panel ball-point pen cut out ailerons using sharp blade straightedge Sand bevel aileron leading edge set ailerons aside havent already done decide point whether wing tip scale sport type build tip accordingly Tail surfaces worked out construction technique previous designs Its simple produces strong straight empennage construction information youll need shown plan questions arise during assembly close look section drawing should clear up Fuselage Begin gluing Is-in balsa sides Lite Ply doublers contact cement seal edges CyA Build right side directly over plan build second side atop first after covering sheet waxed paper Lite Ply less full /8 thick youll need shim forward area side /4-in built-up rear portion left side flush 1/s-in-sheet fuselage side Remove sides plan Separate sides pin down top view plan F-6 former tail post using inside lines plan guide Install former slots ply doubler glue place Install F-3 pin sides hold place glue Install F-2 before gluing place pull sides using pin rubberband persuaders across top secured engine mount firewall using method effectively seals front end fuel entrainment model structure After inserting bolts through firewall soldered wire across head slots epoxied wire liberally Continued page 40 C-130 HERKY-BIRD 130118 Wingspan515 87 Wing area 272sq 752sq Wing load 335 02 33 02 natruction manual included PLANS 3 sh $48 $68 115 scale nacellas available plans include model specs weight schedule scale source information 1/4 Scale BD-5D Wingspan Wing area Wing loading PLANS 4 sh Canopy air intakes & Rolled & postpaid /USAby PALMER PLANS 210-1/2 EL CAMINO DR Dept C BEVERLY HILLS CA 90212 310 274-2456 38 Model Aviation A-26BINVADER Scale112 70 5405 sq Wingspan Wing area Wing loading 229 twin 25s Instruction Manual Included PLANS 4 sh $58 Fiberglass cowls avallabls SIMPLY FUN 0000000 may well easiest-to-fly commercially available outdoor RIC aircraft Tom Atwood Editor Model Airplane News May 1992 issue AVAILABLE NOW ParaPlane Sport components included $395 Basic Kit Requires 2 Channel radio bafl & Charger $22995 $10 S/H charges NJ residents 7% sales tax 8 AA batteries required Electric R/C Corp cml 8OO-227-84Ob milE Penneauken NJFree Full Color Brochure 0810971 40 anginafor experiencad 645 5058 sq 33802 Experts whove reviewed tapes agreewhether youre experienced RCer beginner whos ready something straight level flying Wring Out just ticket THREE TAPES COVER IT ALL studying practicing three tapes sequence experienced flyers well beginners can attain kind aerobatic refinement weve admired watching pros tapes real-time split-screen imaging perfect blend Stephens Akro/Shepherd Continued Page 38 epoxied firewall Lite Ply slots Sig Kwik Set pulled sides hand until epoxy set Cut 114-in-sq balsa rear fuselage crosspieces glue place Note top pieces slightly longer bottom ones Glue diagonal braces place Install LGP epoxy sheet bottom inside Lite Ply doublers Glue Is-in sheet F- 10 place Remove fuselage plan position glue F-9 voice-over live sound gives Wring Out real edge over less-professionally produced videos progress will proof VALUE THAT CANT BE BEAT Best Wring Out series priced youll able own full set originals resorting low-quality copies Wring Out volumes dealers phone 1800 531-1784 CARL GOLDBERG order direct MODELS INC Install /i x 1/2-in top rear turtledeck stringers between formers F-6 F-9 Fit glue formers F-7 F-8 Glue Is-in medium-weight balsa sheet turtledeck sides Sand sheets flush 3Iis top stringers glue bottom layer top /4-in turtledeck sheet Pin some /2-in scrap balsa top longerons stabilizer position glue top F-b 1/4-in-sq tail post F-9 Finish sheeting turtledeck over stabilizer remove /2-in shim scraps Glue /4-in spruce braces between formers F-2 F-3 Now good time shape 118-in A-grain balsa sheet will cover corners fuselage top Cut sheet little longer necessary cover corners between formers wrap around some spray paint cans secure assembly rubberbands until dry Cut maple wing hold-down blocks corner fuselage opening install epoxy blocks dry place wing saddle true up fuselage centerline pin firmly place Cut three pieces 3/is dowel about 3 long drill /16 hole through wing ply hold-down plates maple block insert dowel Repeat procedure until four holes have drilled Remove three dowels unpin wing Tap maple blocks I4-20 tap check threads nylon bolt Drill holes wing plates 1/4 position wing fuselage bolt down Place waxed paper plastic wrap over wing center section formers F-3 F-6 position formers F3-A F6-A clamp clothespins Place Is-in saddle strip over sheeted wing pin down glue F3-A F-6A Position formers F-4 F-5 glue x /4-in strips between begin sheeting cabin section photos shows balsa sheeting wrapped around some paint cans form its curvature Continue sheeting until whole cabin section complete including hold-down tab front dowel bolt rear Sheet area between F-2 F-3 remove cabin section unbolt wing Install tubes throttle pushrod make provision smoke system installed Assemble install fuel tank optional smoke system tank Install bottom double /4-in sheet between F-2 F-3 along former FB bottom stringers Position landing gear drill mounting holes Shape balsa forward landing gear blend cowl former FB use illustration dashed line plan guide shaping channel Bolt engine spinner firewall Position cowl using straightedge along top side fairs Is-in top sheeting between F-2 F-3 Trim cowl necessary Epoxy hardwood cowl hold-down blocks F-2 replace cowl drill holes sheet metal screws through cowl cowl blocks Pack foam around fuel smoke system tanks glue /4-in-sq spruce corners doublers between F-2 F-3 Epoxy F-li F-lB place Fuel proof entire front end forward F-2 coating epoxy Build landing gear fairing /4-in Continued page 48 40 Model Aviation Its Wring Out aerobatic instruction series featuring Dave Patrick Stephens AkrolShepherd Continued Page 40 balsa Sand fairing flush EB forward block install 1/4-in dowel center Drill through dowel landing gear tap gear 4-40 bolt secure fairing make landing gear cuffs sanded some foam shape mounted piece Lite Ply scrap covered fiberglass epoxied epoxy dried hogged foam out fiberglass gave cuffs another coat epoxy inside out glued hardwood blocks landing gear fairing blocks attached cuffs sheet metal screws Covering finishing gave fuselage tail surfaces two coats Sig nitrate dope sanding off fuzz between coats covered structures Sig Koverall attached Koverall dty brushing nitrate through material wherever contacted nitrate-doped wood After installing gluing fin tightened covering using iron set medium heat Take care avoid excess heat Koverall since material tough could distort underlying structure simply going little too far tightening gave fuselage tail surfaces five coats nitrate dope painted Cheveron Perfect paint colors match Super MonoKote used wings Starting Williams Bros three-inch scale pilot turned likeness Ray Parker custom-made cap headphones shoulder straps cap made piece cotton painted blue nylon screening mesh /32 plywood band visor headphones balsa bag tie band neck strap Futaba radio set perfect shoulder straps painted instrument panel flat black dope cut out Gorham Model Products instruments glued Steve Durecki Fiberglass Specialties T&D makes cowl wheel pants pulls canopy butyrate sheet products highest quality Bob Obenberger Romco created Tru-Turn nose art Its almost exactly scale really puts finishing touch Akro found Bob Steve Durecki Ray Parker pleasant work think can objectively say best flying models including Lark TR-260 plan enter Scale contests set color photos suitable presentation folder available Jim Pepino Scale Plans Photo Service 48 Model Aviation Power easy starting power smooth take offs power intricate maneuvers Red Max 54 GAL TOTALmakes DRUM $MTengine come __alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs ___secret gredients keep engine last____ng longer ____________ running rheavy dty appmore power___ 25463fully ___33611any other ______41760 100% money back guaran tee com pletely sat isfied ___reason Red Max has power better idle _____19081432139312791145and better _____20161540150113871253 CUSTOM BLENDED FUEL INGREDIENTSGrandwear charTotalacteristics Available type engine use Call price Mm gallon boats cars helicopters speed ern scale scale kavan iginition 3000 than . Prices May Varyother fuel RED MAX PREMIUM FUEL fuel beginners & sport flyers should use Avail tn synthetic castor lend REDMAXO101676274168160917365 RED MAX 5123792890382974223833 RED MAX 1014301073104495885831981 RED MAX 12155511661135104293335241 REDMAXiS1679125912261125100838500 RED MAX RACING FUEL Trophy winner planes boats & cars two boat blends castor ok up 40% nltro RED MAX 202133137313361227109849890 _____ RED MAX 252406152414841362121958057 RED MAX 403237197719241766158282503 RED MAX 503790227922182036182398800 RED MAX 6043432581251223052064115097 RED MAX 6546202731265924402185123246 RED MAX 4-CYCLE FUEL Efimmmisa detonation & kIckback 4-cycle engInes smoother Idle power I0-4CYCLE154911621131103893032428 15-4 CYCLE1826 136913331223109540576 RED MAX HELICOPTER FUEL Extremely smooth ninning extra defosmer drk color special heavy nil hellcplm toHe9copler1578 11841152105894733611 ______ lSt-lelicopter1855 139113541243111341760 ______ RED MAX PERFORMANCE FUEL HIgh flash point hesvy oil use tuned pipes ductad tan & othe 5 Perfonnanca1302976950872781 lBPerforrsarae 1578118411521058947 IsPerforrsamnn 18551391135412431113 RED MAX PATTERN FUEL Pmven best fuel pattern engines using pumps tuned pipes 5 Pattern131296390387979124358 10 Pattern15501081102297887930142 15 Pattern190612891218110399234086 SUPER TIGER 3000 FUEL Best fuel super Tiger 2000-4000 engines ______ Super Tiger 3000 1430 1073104495885832479 RED MAX DIESEL FUEL Supeilor diesel back list popular demand customers BEARING TYPE BALL PLAIN PLEASE PRINT lTY STATE ZIP Order Form CALL OR USE ThIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OW ON ThE LEFT THE TOTAL ON RIGHT Freight tree qta gala No handling charge Freight collect drums Deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $375 per carton UPS shipments add $500 per carton hazardous materials tee OTYFUBC1E4GALCASE 24GAL6OGAL128GAL cidendMIXTIJGALSOALCAN PERGALPER GALPER GAL RED MAX FUEL Continued page 80 CARD TYPE AND NO EXPIRATION OATF ELDON J LIND CO #401 UIUUH Easiest hinge tool available $325 Finest Building Tools Available w SEND SELFADORESSED STAMPED EN VELOPE FOR CATALOG #101 EXTRA HANDS Makes covering easy $1775 3151 CARAVELLE HAVASU CITY AZ 86403 602 4537970 happen live near Ocala Florida consider paying visit Ray Parker fine craftsman gentleman version Stephens Akro would exist Contact Ray Leeward Air Ranch Ocala like enjoy crafting balsa-and-plywood models love aerobatic flying building Stephens Akro will time well spent bench model does Acknowledgements Bud Davisson Emily Zimmerman Ray Parker contributed some information article want publicly thank helping project come alive * Poor Mans Prop/Hughes Continued Page 63 Note small block prop hub raises prop off base allow insertion triangle prop held place conical nut prop balancer prop pitch gauge simple inexpensive construct Pitch measured slipping various triangles under prop until find bottoms base plate slot matches propeller angle will have construct triangles pitches wish measure Fortunately geometric basis pitch calculation pretty simple Ive reduced triangle dimensions rather using trigonometry angles Just plug numbers equation triangle base always has length 100 millimeters pitch 314 x dia x 100 ngle height mm example wish make triangle representing 7 pitch 4-in radius must multiply 2 get diameter use formula formula yields 28 millimeters height base always 100 millimeters Just construct 900 right triangle dimensions cardboard such found back paper tablets triangle 6-in pitch 3-in radius multiply 2 use formula would 32 millimeters 100 millimeters photos shows templates some pitch angles commonly use will want check least two points probably blade radius Make templates COMPOSITE SOLUTIONS--PO Ito 252 Haclet NJ 07730 CARBON FIBRE Tuned Exhaust Systems LOW RPM Pipes below 11000 STANDARD engines 40 90 size OSRossi Pico Webra Sc per Tigre others Performance Pipes LONG STROKE ENGINES 60 size OS OSHanno Special Webra YS YS-120 4 cycle Custom Pipes UC Speed Aerobatics other applications carrying Free Flight Competition Timers br Info call s 908 264-6693 till 10PM 1ST OUR PRODUCTS ARE OMPETITIVELY PRICED AGAINST ALUMINUM INPORTS Satcsfaction guaranteed money back need sure dont cost much dont take much time Some typical templates shown photos Shallow angles may require constructing triangle rectangle done 5 lh-in-pitch 3Ii 6-in-radius template template will come up bottom blade propeller being measured another photos Kyosho Electrics blade 8-in pitch other 81/2 easiest way correct unbalance make pitch both blades 81/4 splitting difference between 8 81/2 shimming back hub masking tape easier alternative beveling prop made wood Wood props can sanded filed proper hub angle Just sure keep hub surface flat want know whats going propellers youd best make purchase prop pitch gauge odel Aviation WiLire assembly before yuu bUllO rM tAY M Stephens Akro/Shepherd Continued Page 48 $lAiNrJG Nay SpecialGT GENERIXExpiresjune7 Foorrerly DOCS GENERIX FLY-ROD UlIro-Hi-Tec Fon Fly Special Airfoil Technology & Nerd Nodriog Bar Tiere Build 0-Tube Wiog Keeglas Soon & Geon Inclodeus Whnol Conloor Germ Balno &- Plysoood Skid Horderoro & Supor Lire Coveong Conrporirioo Arofrarne Kir ConporerRadionfMionoo$59 Fogine 34040 Full Sire Plan TAn OATOR2 Km rho Prier Ore holh Tnil Galonni Bror Oral Aroundt No Micro Nredndt NOT rho Paid Heaor Ornigord Cornhor-Srraronr & Elecronic Aoo Spor-r Plooo Will Pack Arnybadyr Lonoh SFuN 38 uREA 3ff \ -Z7SFEOAL PRICE 2 Flarernl $2995Z2Z~ABF CI4EAF SENSATIONSul Jr Soredy Likic Per Ho Fun-Flynn, Foon Wing Kovglo Boon Sapro Lilo __________________ Door Broovo Whool Hordonore & Oreor lorocrions Build 12 BR Doer Lor Ore Peico Fool 111 Blow 262035 Off 90% rho Cowynorior Huge Ainfoil-Plirs So Slow Toenpa FL 33615 Coo Walk Nrc er Irnocro FOeHiogrd Try 11813-854-lOTS SF424 4e ARE 770 SFOAL PRICE COO pEgro SC Ooroe S7000er ji3995 Write foe PSEE Calairg