NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 136, 138
NO OCR TEXT NO OCR TEXT elevator pushrod exits tiwough open ing rear fuselage clevis easily accesable setting elevator throw fully aerobatic yet its seniisymmetrical airfoil dihedral make inherently sta ble enough novice flier nutshell Scorpion has proven itself perfect fun-fly airplane anyone 60 engine urge fly lowkeyed competition design has enjoyed considerable regional popularity liter ally dozens having built Kansas Colorado Oklahoma Texas New Mexico have proven successful sport fun-fly models Construction Two surprising 26 Model Aviation rudder pushrod exits through fuse lage top block just outside fin Just about everybodys 50-size engine ana murner will fit engine compartment no need modify part fuselage Open compartment makes engine easy service setup typical servo mount shewn servo position build desired differential aileron throw isnaing gear held place exterior nylon straps solid pine landing gear blocks also offer good torsional resiliency tried-and-true rubberbands Night d formeriess fuselage allows ra n nsa generous mama coinpurunem U l pull gear moved virtually anywhere achieve requirue SCORPION 60 BY MANNY HAMILTON 3/8 BALSA ___________________________________SHEET 3/8 BALSA 60 ENGINE 1/4 BALSA SIDES 1/16 PLY DOUBLER 1-1/2 BALSA AILERON STOCK 1/2 SQ BALSA SPARS TOP AND BOTTOM 1/16 x I/4 BALSA CAP STRIPS 1/8 BALSA SHEET TOP & BOTTOM 1/16 BALSA SHEET TOP 8 BOTTOM KRAFT 60 OR LAR MOTORI/Is BALSA TRIBS 0 1/2 SQ BALSA1/4 BALSA SHEET NLEADING EDGEWING TIP facets Scorpion its simplicity its ease construction first thing youll notice looking plans ab sence formers fuselage Other A-in plywood firewall no interior fuselage members Obviously means installing radio gear hooking up control rods could easier assumed omission formers has compromised fuselage strength Scorpion youd wrong Youll never build stronger fuselage resistant damage pilot error unusual strength due chiefly use full-depth ply doublers wing area forward fuselage-length tri angular stock provides greater normal gluing surface between var ious pieces Wing Because wing must used help align stabilizer rudder during fuselage construction should built first great deal time can conserved pre-kitting wing before starting put pieces together Begin stack-sawing ribs cutting out pine landing gear block slot landing gear wire can dadoed table saw depth can carefully carved hand using X-Acto narrow concave blade same time select prepare necessary /2-in stock leading edge spars 2-in-wide strips A-in balsa will comprise wing trailing edge cap strips Once components prepared begin forming up right wing panel gluing -in-sq piece spar stock right front side pine landing gear block ensure accuracy mark exact center landing gear block place slotted side block down pin spar alongside both lying flat building board Allow assembly dry position over plan indicated Pin down bottom trailing edge piece right wing panel shim up spar/landing gear block along its length Fit glue tip rib center rib over spar trailing edge piece same rest ribs Once ribs set place add top spar top trailing edge piece /2-in-sq leading edge next Note both leading edge pieces spars will require slight beveling ends butt against other centersection location Remove right panel building board construct left panel same fashion right will neces sary block up right panel during phase construction As before install spars ribs leading trailing edge pieces sequence Strive good close fit butt joints wing halves use epoxy Plank entire wing leading edge /I6 sheeting Wet top sheeting will conform curvature ribs Af ter installing landing gear support blocks plank center section cut out hole aileron servo Complete basic wing adding x A6-in rib cap strips A-in-sheet tip plates Sand wing shape rounding leading edge shown plans Drill %2-in hole gear sup port blocks drilling slotted side landing gear block Fit servo cutout mount short strips /16 plywood glued sheeting Bevel front aileron stock hinge clear ance cut both ailerons length Keep ailerons stock thickness chamfer leading edge V shape Drill both ailerons required torque rods epoxy rods place Final sanding preparation cover ing can done both wing aile rons before hinges installed Although no Scorpions built date have experienced center-section wing fail ure builder feeling uneasy about lack multiple gussets center section may soothe nerves bit glass cloth optional method involves wrapping two-inch-wide strip fiberglass around Left -in firewall must installed squarely place OO setting small triangle works well aid Right fuselage begins take shape addition ply doublers triangular stock temporary spacer spacer removed control installation Left bottom nose block part 1A-ln cross-grain bottom sheeting place Right Adding top block begins give fuselage semi-finished look ample wood thicknesses allow nicely rounded shape given fuselage carving sanding Left basic wing structure pine landing gear block installed Note small vertical landing gear blocks inside center rib bays Right top sheeting wing begins gain torsional strength Adding bottom sheeting cap strips completes process 28 Model Aviation 1/2 BALSA TRI-STOCK Iv L vie iywooo DOUBLER 1/4 BALSA SHEET FUSELAGE SIDES 1/2 BALSA TRI-STOCK FUSELAGE TOP VIEW ii Ii K TEMPORARY SIWCER LOCATION 1/4 PLY WOOC FIREWALL 3/BBALSA TOP BLOCK 1/2 BALSA TRI- STOCK 1/16 PLYIA BALSA DOUBLER-SIDES 1/2 BALSA STOCK BOTTOM BLOCKFUSELAGE LER FUSELAGE CROSS SECTION 2/32 DIA MUSIC WIRE 1/4 1/2 BALSA IScRAPI TEMPORARY SMCER LANDING GEAR PATTERN 12 REQUIREDI 3/B BALSA SHEET TOP / APPROX LOCATION RUCOER ELSV SI/4BALSA SHEET SIDE ThROTTLE SERVOSOMITTED FOR CLARITY 10515CANOPY CUT DOWN TO 9-ITEMPORARY SPACER 3/B BALSA LOCATION SHEET TOP /FUSELAGE 7 7SIDE VIEW FOX 601/2 BALSA ENGINE1/2 BALSATRI-STOCK TRI- STOCK—3/B BALSA SHEET STAS B ELEV -I___ FUEL TANK AREA______________ ------LARGE HORN LOCATION DOWELALERON SERVO RAFT OR -------SIMLAR MOTOR---qMOUNTBALSA SHEET /8 BALSABOTTOM CROSS GRAIN1/2 BALSA TRI STOCK 4 PLY2BALSA BALSA/4 SOPNETE1/6 PLY F REWALLSPARSL G BLOCKDOUBLERELEV PUSHROD 1/2 1/4 DOWELENDS HERE 5/32 DIA NOSE3/B BALSABALSALE5/32 DA MAN S M LARE SEAR WRESHEET BOTTOMLG52 ORSHEET OF 2 ____A1/4 BALSA SHEETI -FUSELAGE S DESII___ 1/16 PLY DOJBLERI 23/4 DA27/B DIA WHEELS NOSE WHEEL 0I 2 3 4 5 6 MODEL AVIATION SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY NANNY HAMILTON DRAWN BY LARRY KRUSE TRACING BY JOE DEMARCO ALL NIGHTS IA PLYWOOC FIREWALL F -1/16 BALSA SHEET TOPEBO OM 6-2Wz W2W2BI W4 161 / 1/2 SO BALSA SPARS TOPWINGPLAN BOTTOM_________ LIE BALSA RIBS Ki—I____ 1/16 BALSA AlL SERVORIBS 1/16 PLY CENTER SE 1/16 BALSA SHEET__ 21111 TOP B BOTTOM 0I23 LEFT 1/16 MED BALSA1/16 MED BALSA 0 REQUIRED14 REQUIRED WING RIB ING RIB W2 1/2 50 BALSA LEADING EDGE 1/16 BALSA C SHEETING TO OMITTE BALSA AILERON STOCK ITER SECT B BOTTOM FOR CLARITY TYPICAL HINGE LOCATION ----------I/2 SO BALSA LEADING EDGE 6-I SO PINE LG BLOCK 3/4 SQ PINE VERT LA BLOCK 1/5 BALSA SHEET TOP B BOTTOM IOMITTED FOR CLARITY \ AILERON TORQUE ROD 3/4 50 PINE REQUIRED VERTICAL L S BLOCIC 3/4 50 PINE LANDING GEAR BLOCK ---I/IeBALSA SHEET ___—TOPBBOTTOM ____ITOP NOT SHOWN FOR CLARITY -II16-I 16-IW-2 ____W-2 ____2W-2 W-2 -_- PLY1/2 SQ BALSA SPARS TOP AND BOTTOM WING PLAN RIGHT SIDE ________V16d/41/4 BALSA SHEET BALSA CAPWING TIP STRIPS 3/B BALSA SHEET TYPICA HINGE ELEV STABILIZER 3/B BALSA SHEET SHEET 2 OF 2 MODEL AVIATION ___SCORPION 60 60 POWER FUN FLY AIRPLANE DESIGNED BY MANNY HAMILTON AILERON TORQUE WN BY LARRY KRUSE ROD____________________________________________________________[v32][b3114207814600]] 4 5 6AILERON STOCKTRACING BY OE DEMARCO LL RIGNIS RESERVED to U U 0 U U U U U 4 U U 0 U U U center joint wing Trial mount landing gear hold-down straps set assembly aside until fuselage completed Fuselage Cut out fuselage sides straight-grained A-in balsa Stack-saw ensure two identical sides making sure side has about same resis tance bending Measure mark po sition A-in ply firewall side very accurate task order maintain 0 00 0 thrust line Cut out two /16 ply doublers making sure build right side left side align along firewall line marked earlier Again task critical keeping thrust line its supposed Use five-minute epoxy install doublers let set up before proceeding Using white glue Sig Bond glue -in triangular stock place A6 ply doubler ends have choice cutting /2-in stock neat er assembly simply bridging across gap chief purpose tri angular stock provide gluing surface Y8-in top bottom blocks /8-in bottom sheeting longitudinal strength important Drill -in firewall required engine mount have selected stall blind nuts back side Lay fu selage side flat building board epoxy firewall Use right triangle small carpenters square accuracy first side cured epoxy fire wall other side Block up first side maintain squareness thrust line Since no formers will need temporarily install piece A-in scrap balsa same depth fuselage just behind wing cutout area Let desired final appearance fuselage deter width temporary former tapered streamlined fuselage want ed make temporary former 2 2%-in wide other hand want fuselage parallel wing trailing edge taper back tail 2%in width appropriate former either case merely tack-glue position can easily removed later Now pull tail together Trim trian gular stock both sides tail get vertical gluing surface Leave least %in gap rear order give room elevator pushrod exit Glue tail area well glue such Super Jet works nicely sets up almost inunediately can plank bottom fuselage rear wing cutout back cross-grained A-in balsa Glue %-in fuselage top place Its good idea wet upper surface let set few moments will curve nice ly meet slight curve top fuselage Once fuselage top dry pop out temporary spacer Drill holes wing hold-down dowels dont install until fuselage covered Glue bottom nose block place round fuselage pleasing shape cause wood thickness triangu lar stock nose area fuselage top can rounded quite bit bottom surface aft wing however should rounded slightly best results Carve sand fin rudder stabilizer elevator airfoil shape slot mating surfaces neces sary hinges Test fit stabilizer its mount strap wing temporarily see everything lines up Sand stab mount needed get everything squared up careful change stab inci dence process though Slot fuse lage top fin attaches square wing stab Finishing covering Fill pits dents dings hangar rash spackling compound sand everything time preparation covering coat Balsa-Rite will help MonoKote stick little better coat clear Hobby Poxy brushed around engine mount area inside tank compartment will provide adequate fuel-proofing Cover compo nents separately install hinges Remove covering stab joins fuselage Glue stab assembly fin assembly fuselage Again take spe cial pains keep everything square canopy can attached shown moved backward forward fuselage give Scorpion different look RC-56 glue suggested adhesive shallow groove fuselage top will help keep canopy place Sig Epox-o-lite fillet may used fair canopy smoothly fuselage top block provide addi tional attaching surface Engine radio Bolt engine mount install engine nose gear Drill holes firewall throttle cable nose gear pushrod fuel lines Du-Bro cable recommended throttle Sullivan flex rods work well steerable nose wheel tank can choice should wedged foam reduce fuel foaming engine vibration Make sure tank stays level can get packing foam Install radio gear choice ample room fuselage contemporary gear setup Plywood servo trays glued A-in-sq balsa rails give neat professional look radio compartment Such arrangement also permits slide servos battery pack receiver back forth achieve necessary balance point Try arrive balance point having add weight nose thats possible hesitate add weight reach bal ance point probability foregoing problem ary 1988 31 completed wing ready sanding small amount dihedral determined land ing gear block adds stability slow maneuvers like limbos touch-and-goes Assembled camera ready cover generous planform light sturdy structure keys models contest success An iron-on film finish recommended Letters Editor Continued page 12 trim Two weeks later made three flights experimenting flaps outing aircraft flies beautifully flights made Maule Airport birthplace original full-scale aircraft Bob McCann Jackson MI Son Writes son Chris 14 years old pro cess learning fly remote control GLASSES salety Pmducts Modelers Modelers Sunglasses ANSI Z871 approved safety glasses Fits over prescription glasses Extremely light weight additional comfort Wrap ar6und side protection Anti-fog Anti-ultraviolet radiation Available clear amber gray mirror case included Clear$1095 Gray$1195 Amber$1195 Mirror$1495 CYAMask$1195 1BC Halon Fire Extinguisher $1495 Dealer Inquiries Invited Shipping handling add $275 VISA MasterCard accepted NO CODs Send cashiers check money order Please allow 3 weeks fo checks o c ea PE5 Safety Plus PO Box 1173 Clinton MS 39056 601 924-9640 airplanes started flying April 1987 has perfected landing yet En closed journal entry written school expressing feeling concerning new hobby Joe H Helms Monroe NC Following enclosure written Chris Helms favorite possession airplane can fly times hate has overcome Im depressed makes spir its soar Im lonely work boredom goes away Im awake can go sleep think about flying drift off sleep think would lost plane crashes feel like Ive lost friend cant explain joy gives make successful flight cheer softly myself fly off night Its easy thing see fly plane like Safety/Preston Continued page 20 glue Apparently did see October 1985 Safety column contained excerpts article medical journal concluded prolonged use CyA glue definitely can pro duce asthmatic condition some people sent copy column letter writer anyone else would like receive copy please enclose SASE request John Preston 2812 Northampton St N W Washington DC 20015 Scorpion/Hamilton Continued page 31 will occur since Scor pions constructed far have turned out tail-heavy its best prepared correct situation should develop since few things excluding federal budget out control tail-heavy airplane flight line Assuming have con structed Scorpion accurate true fashion avoiding warps misalignments will fly off board As ship double-check incidence angles stabilizer wing make sure conform shown plans Novice fliers will want set up systems follows Rudder throwone inch right left Elevator range% up down Aileron range% up down advanced fliers wanting fully aer obatic plane should use following guidelines Rudder throw 1 /2 right left Elevator rangel up down 136 Model Aviation SUNBIRD SENSATION WITH STYLE Sunbird combines eye opening performance truly distinctive styling terrific flying design Whether choose 40 size Sunbird 10 Sunbird Jr youll find Sunbird perfect sport plane fl PRECISION PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 Continued page 138 PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085