SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor
Edition: Model Aviation - 1991/06
Page Numbers: 58, 59, 60, 179, 180, 181, 182, 183
SO YOUVE never heard HL-2 Dont embarrassed Probably aviation history buffs have never gotten wind little Polish aircraft built 64 years ago summer Only produced lasted just little over three months 1927 home-built damaged beyond repair after dead-stick landing muddy field during cross country event probably logged less 50 flight hours did think such obscure airplane worth reviving Because its attractive design symbolizes aviation fever swept Europe America decade after First World War HL-2 reminiscent American home-builts like Heath Parasol Pietenpol Air-Camper easily outclasses appearance Whats original airplane sort proportions translate model thats easy trim fly 3 oz little Free Flighter makes ideal Electric Schoolyard Scale flier An admirer American silent film actor Harold Lloyd designer Jozef Medwicki named HL-2 after idol trademark large pair hornrimmed glasses No record exists HL-1 may have simply design study based HL-2 design Peanut model designed flown Lubomir Koutny Czechoslovakia published Bill Hannan Peanuts Pistachios No 5 Since Koutnys model described semiscale felt free make two further changes Having chosen VL Products HY-70 motor made nose cross section rectangular accommodate Unfortunately precluded using dummy three-cylinder Anzani radial engine match prototype HL-2 can also powered HiLine Mini-6 motor can go Modela 024 CO2 motor use rubber power also modified lift-strut arrangement single strut side makes easy remove wings case what Air Force calls incident prefer use dual parallel struts should have no effect performance case position strut attach points intersection lower spars rib reinforce wing structure points front strut will attach fuselage location shown plan rear strut next rearward vertical upright Construction Most authors claim models follow strictly conventional construction techniques phrasing varies thats idea Well really does forewarned HL-2s performance largely depends keeping weight indicated level Since motor battery weights fixed its up control airframe weight careful selection materials especially true balsa lack experience judging appropriate grades wood ask experienced builder help Someone builds contest Rubber models would especially helpful Electric Rubber models actually quite similar rubber motor like battery has much 58 Model Aviation uig picture Ready go Free Flighting Thats dummy Wiadyslaw Siulezewaki test pilot full-scale HL-2 rear cockpit Above author f lies model local field Performance great provided wait day no wind energy Should no consult stick Sig Midwest contest-grade wood Wing wing panels built individually joined later dihedral break Make template ribs Recommended materials 146 phenolic sheet Formica veneer thin sheet metal /16 plywood Shape template carefully sure position size spar notches accurately Using template cut 18 ribs A6 quarter-grain sheet balsa 6-8 lb/cu ft Alternatively may cut 16 ribs / sheet two /16 sheet Cut three ribs A-in sheet Make center section rib modifying two /16 ribs A-in ribs shown plan Shape wing leading edge /8 x /16 strip firm grade balsa1O-12 lb/cu ft Shape trailing edge /32 x A-in wood medium grade8-1O short center section trailing edge shaped / x /32 scrap lower spars /16 x /16 firm balsa top spar /16 X firm A-grade stock Make sure grain runs straight Tack plan work surface cover wing portion waxed paper Saran Wrap position two lower spars shown Secure spars pins either side dont push pins through wood Glue center ribs place including %-in tip ribs Install leading trailing edges add upper spar glue has cured loosen assembly waxed paper block up tip rib 114 Bevel leading trailing edges ends top spar achieve close fit Glue panels together butt joint Shape / ply doublers glue either side top spar rear leading edge Laminate two /16 ribs A-in center section ribs together Install place vertically allow dry Remove wing structure plan Sand over smoothing out irregularities rounding off outer edges tip ribs Install bond paper gussets shown plan Ix addition strengthening structure gussets prevent unsightly wrinkles corners Build horizontal stabilizer elevator flat over plan protected above waxed paper Use 3A2-sq firm balsa leading edge tips spar Make corner gussets lightweight Y32 sheet ribs diagonals use /16 x /32 balsa cut 8 lbIcu ft rib stock set edge Make trailing edge /16 x A-in medium balsa Glue leading trailing edges June 1991 59 Left The wing tail structures bare bones Note additional bracing lift-strut fitting wing Right Close-up cabane strut detail Note cutouts optional rubber power stick wtih Electric have choice motors airframe structure completed ready covering Nicknamed Petite Pole au thor design light simple strong throughout flies almost too well its first Scale semiscale project author has built has begged dethermalizer author used VL Products HY-70 mo tor Correct downthrust built mod eler can add side thrust desired switch charging plug battery Installation battery half rechargeable ninevolt actually 72-volt transistor radio battery author located battery compartment precisely horizontal balance point eliminate need trim weight Full-Size Plans Available Page 203 ___jr__ _ I _ I_ __ f __ u _I __ _ H __ _____________________________________it1t1t ____ Sq- 220 Di,.l-}i ~o2242 Ci2-t.ts 2ti2 Ccti i~y/22 00 Al, Tb,WbqOt32 btS-23q CS 26-2023 II14O,nP 21225F22IS II232tlbIS Sair SwOiiq 23 Wli bit T2-,l*225 235 2*2 ap.q P /332,LE0/i/in5i-Ii ,K%,ATSTbliLq IS, Al-tl2Cwllfly 2.i-5i. 0,-202/3Otq5qIiItIJ/POliqCIot MI HL2 i 01idb- 0272 0-Sw,I L32 03 Rbht V-C 002 0S-lO 3224 ISit 0loo / N -2 22. V. NOTE1Mi 2O2 22202 41nt LOdiq 0 2 R4 22 0222210 04* 3232 3t,%t.02 00222 2i 21201 20 S20,OSOt*WOtt9Z7 NL1 SiA'-.1iru~140 Polisbi 0ot,bli 222/3222 32022 - t22tti MtOAi2O 0 Arr,2 4,. 022222 2M24 22302020Sr 502itOl3IA 1-LIUKon22i0t/ 0222320 iLk Sbllbtilt spar tips ribs Install gussets fit glue diagonals Allow structure dry remove plan Round off leading edge tips Taper ribs diagonals aft spar thickness trailing edge 1A6 Sand assembly over set aside Make fin rudder much same way made horizontal stabilizer elevator Shape trim tab separately attach structure soft copper iron wire Sand assembly set aside Fuselage Cut out two nose pieces /32 firm sheet balsa spare plan Xerox appropriate section glue copy piece cardboard cut out carefully use template make identical nose pieces Cut four longerons firm straight-grained %2-sq balsa should equal stiffness way ensuring strip longerons yourself same piece wood Pin nose piece waxed papercovered plan Fit glue pin upper longeron Soak first 12 inches lower longeron boiling water about 10 minutes pin longeron place plan still wet Glue nose piece dry Cut fuselage uprights crosspieces forward diagonals medium %2-sq strip Cut aft diagonals behind front cockpit 6 x %2 strip Accurately fit piece before gluing place ensure correct fuselage alignment way ensuring sides identical build second side directly over first separating glue joints small pieces waxed paper Make A-in semi-bulkheads cabane struts will attached Accurately bend 032 music wire parts bind bulkheads CyA place Slip 5A6 piece %2-OD aluminum tubing over top joined section plugs wing hold place drop CyA Note struts different heights provide correct angle incidence Joining fuselage sides begins construction temporary jig used install two bulkheads carry cabane struts Continued page 179 60 Model Aviation HL-2 has simple aerodynamically clean lines Its proportions perfectly suited semiscale Free Flight fun model design easy both trim fly possessions hundreds engines models went up flames some cheery news about Vacaville California site next FAI Team Trials Besides being wonderful boost flying West Coast will opportunity great vacation time out-of-staters may want attend $1 OOO Half-A meet following weekend Whittier Narrows Recreation Area Los Angeles Bet little lady would really love nice modeling vacation D H L-2/Sch mitt Continued page 60 jig rectangular piece A-in balsa 1% wide 21/16 long Tack-glue semi-bulkheads 1 %-in-wide ends taking care bulkheads parallel another sitting vertically jig may seem odd have firewall electric-powered model term has used long describe forward plywood bulkhead powered models obliged use sake clarity powered aircraft sizes structural barrier has always placed between enginewhere fire may readily start whenever engine operatingand passenger compartment other area opposite side urn UABLE COUPON Flying paper A-i 0 WARTHOG $400 2for $7 Build fly hour * Authentically detailed * Had Itber-haxj lajrh * Instructional Booklet ,- Cflog* Used GULF WAR 6 mndels $1995 F4 Fl6 Fl4 F/AlB FIl AID PAPER AIRPLANES 133 NIHOA STREET KAHULUI HI 96732 USA Send ad w/ordr paper plane GIFT1 L protection against spread fire rate material used fabricate structural bulkheadwhich will firewall VL motor depends what motor will using Make I/IA ply youre using VL make %2 balsa use HiLine similar motor firewall HiLine will mounted farther forward shown plan Back joining fuselage sides Temporarily join tail posts rubberband set firewall/bulkhead place dont glue yet Wrap another rubberband around nose keep firewall/bulkhead position Insert jig correct location between fuselage sides making sure taller cabane front glue bulkheads corresponding uprights Install lower crossmembers bulkhead stations Allow assembly dry sure fuselage sides remain vertical parallel Once glue has set cabane bulkheads glue tail posts together add remaining upper lower crosspieces diagonals Cut temporary cabane jig base loose discarding wish install firewall front bulkhead Continually monitor fuselage alignment squareness throughout assembly correcting necessary As noted choice motor SCRATCHBUILD 14 SCALE PLANS span sheets price CESSNA AGWAGON 1235 4 oS6O00 CESSNA U206TU206 1O7S 5 S65OC CESSNA 152 AEROBAT 995 3 nS550C P1 PER PAWNEE1os 4 ,S60OC TRANSA VIA AIRTRUK 117B 5 46500 EDO FLOATS[v32]Tss 2 439OO EDO AMPHIB FLOATS* 3 n$49O0 Add 40% Surface Mail P & P VISA & MASTERCARD Welcome fOENSNDSSDO FOR COMPLETE LISTING SF ALL PLANS BOSEt PRODUCTS SERVICES FREE WITH ALL TRIERS NEW ZEALAND AERO PRODUCTS 34 WARD PARADE STIFLWG PSINT BLUFF FLEW ZEALAND THE LEADER IN COMPETITION NEW -I 15 DIA 16 ii NEW HIGH TECH AIRFOIL SECTION 10 TO 2CR/N INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS N FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 8334568 8Is45667 94S66/ll/s 104566/7 106W8W 106EW 11467747Is8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 EIA PITCH 7SN 5/N SERIES 40CC 8/R6/z6777 977/7S/ W WIDE BLADE EW EXTRA WIDE H NARROW June 1991 179 PROPELLERS CYCLE TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW NEW PRO SERIES 3 LIGHTING SYSTEMS THE ORIGINALS N N Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 #RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16Econo Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost ot item plus $2 DO $500 foreign immediate shipment Include full address UPS Sorry no GOD CRam 4736 N Milwaukee Ave ago IL 60630 StIlIt5 100 THP DESIGN PITCH THP 66/z776 677 8 6776 67 676 determines configuration location /l6 plywood motor mount/firewall VL Products HY-70 motor mounted firewall four 2-56 x -in screws blind nuts shown plan location mounting holes firewall determined motor place holes enlarged accept blind nuts flying buddy Jim Smith powers HL-2 HiLines Mini-6 installs motor mount/firewall /6 forward location detail shown plan Prior installing either motor cut glue %-in -sq mounting strips inner surfaces nose pieces location angle shown plan 40 angle creates downthrust sure mounting ADAPTOR THROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & [itfiFItiCK1 OTO 5/32 CAPONAU DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTOR ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTING PLASTIC WOOD SOFT MErALS LEXAN PLEXIGLASS & EFC AVAILABLE IN 006 008 010 012 014 016 018 020 023 025 028 032 THICKNESS OUTSIDE DIAMETER @ $675 EA X 01 0502ARBOR$600 503 14 X 1/4 SAW $600 UR SAWS ONLY WORK WFFH OUR ARBOR PIN VISES SUPPUED WFFH 2 REVERSIBLE COLLETS 0 TO 1/8 CAP LARGE KNURLED HANDLE STAINLESS STEEL THROUGHOUT HOLDS TAPS UP TO 6-32 No504 4$400SETOF No505 61100ALL4 No500 10 1675 4$3800 No507151900 strips parallel way accomplishing make template scrap sheet use positioning Pull fuselage sides partially togetherwith rubberband desiredto fit firewall correctly Add two A2-ID 1Y6-in-long aluminum tubes mounting landing gear should extend completely across fuselage protrude slightly shown Cement securely place CyA Fit lift-strut attach points -in -long pieces A6-ID aluminum tubing bound thread lower longerons CyAd position shown Add Y32 gussets Sheet top fuselage firewall aft rear cockpit medium A2 sheet running grain crosswise Trace cockpit outline plan transfer fuselage cut out both cockpits Plank lower surface nose /32 sheet extending back crossmember forward landing gear fitting youre using VL Products motor glue forward edge /32 sheet firewall youre using HiLine motor install / x A-in crossmember just aft rear motor begin covering point Carefully sand completed structure over set aside Landing gear wheels years Ive difficulty bending three-dimensional music wire landing gears Finally desperation devised reinvented simpler method two main landing gear struts will formed two pieces bent music wirea forward strut rear strut Make two forward two rear pieces shown plan use piece READY TO FLY 1/8 SCALE TOP GUN brass tubing join front rear strut piece piece brass tubing used join pair strut wires takes some special preparation Anneal soften short piece couple inches long A2-in-ID brass tubing heating flame gas kitchen stove propane torch example until changes color quenching water Cut two pieces % long flatten midsection pair needle-nosed pliers Take front strut piece rear strut piece music wire bent previously insert straight ends opposite ends pieces annealed brass tubing Now can bend brass tubing until achieve correct true view landing gear strut assembly shown plan Insert upper ends landing gear strut assembly brass-tube fittings fuselage Assemble second strut same manner fit other side fuselage Now will find easy bend minor adjustments strut geometries get alignment other Once satisfied fit alignment landing gear struts can finalize assembly using drop CyA end annealed brass tube joins front rear strut wires must make sure tubing wire clean free grease oil before CyA applied otherwise joint will hold Using CyA join wire/tube joints feasible small lightweight model like Larger heavier models would require joint soldered brazed Make sure have made left-hand right-hand strut Laminate wheels two disks A-in-thick medium balsa cut slighfly 180 Model Aviation WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need Only padiagel Cycler-Charge $23996 Fits 48V Ax 96V Tx packsPlus $7 50 S&HGelled Cell Others available write cat Trickier$3496 C ForPlus $750 P&H Regular Model *4696 Plus $500 P&H Multiple ld kit sniat Radios~electric boat batteriesSpecify 6 12 24V Heavy Duty Model$5896 sport winch large boat andPlus $600 P&H electric power charging batteriesSpecify 6 1 2V CaRa ProductsSASEIOVOI,a5OOpo Bo1 Dealer nqwnes nstedCanton SD 5701 EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRI1E FOR CATALOG$300ORDERS 212-925-1006 WHEN ORDERING PPD ADD $300OFFICE 212-226-3749 COD ADD $500FAX212-925-1010 FOAM CORE FLOATS FOR AIRPLANES AND HELICOPTERS V HULL FLOATS FOR 3O POUND AIRPLANES CHOOSE FROM PLANS KITS OR READY TO PAINT ALSO FLOATS FOR 4IC POUND HELICOPTERS AMSOIL SYNTHETIC OIL DEALER SEND SASE FOR FLOAT OR OIL LITERATURE KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK N.I 07066 Make Real Decals computer printer Send $800 S/H over 15 sq ft decal materials plus instructions LABCO 27563 Dover Warren MI 48093 oversize two small disks h-in dia /32 ply cut separately side Drill through center wheel 6-in drill preferably drill press insert 2-56 screw Place nut far side secure wheel further shaping Chuck electric drill Dremel tool works fine sand wheel shape emery board sandpaper block Remove wheel screw mandrel insert /2-in-long piece %2-ID aluminum tubing allowing protrude just slightly side Secure tubing CyA Fit shallow bond paper cone over other side tube cement wheel Complete second wheel same way making sure two nearly equal diameter Set wheels aside Cut 69/6-in lift-struts piece /32 x Y16 hard balsa Sand oval cross section Bend upper lower fittings /32 music wire upper fitting hook engages eye protruding lower surface wing panel lower fitting merely L very slight kink base sits snugly tube fitting fuselage should snug tight Adjust kink necessary allow fitting slip out aft wing should knocked off Bind both upper lower fittings strut thread secure CyA set assembly aside Covering finishing Give completed structure two coats dope recommend Lite-Coat thinned 3070 Sand lightly after coat Give wheels lift struts four coats almost fill grain Keeping airframe light possible limits choice covering materials lightest covering available Japanese tissue has sufficient aerodynamic strength little puncture resistance Silkspan often used Rubber models somewhat stronger lightest plastic covering other Mylar film used Indoor builders Micafilm About 25 percent 50 percent heavier doped silkspan its also appreciably stronger Faced few choices opted colored silkspanred caseto achieve appropriate scale color weight colored dope Silkspan much easier work predope structure Simply position silkspan reactivate dope thinner press material down move along framework sure smooth eliminate wrinkles Try limit size covering pieces just slightly larger structures being covered covering wing lower surface first position CyA liftstrut fitting eye portion proceed upper surface Dont cover bottom fuselageIll explain later shrink covering spraying rubbing alcohol atomizer After Model Rocket Contest Model Airplane Fun Fly Static Displays Flight Fest P0 Box 533 Alarnogordo NM 88311-0533 505 437-2840 spraying pin tail surfaces weight down flat paper towel-covered surface controls warpage Spray wing side time pin weight down center strip A-in balsa create desired amount washout covering still wet weight down tip leading edge /ti-in block raise tip trailing edge additional /t6 After shrinking surfaces carefully dope two coats Lite-Coat thinned 5050 prevent warpage tail surfaces apply dope side time preferably spraying rather brushing Pin untreated side flat surface spray brush Flight Fest Swap Meet Raffle Hang Gliding Out-of-State l-800-545-A021 New Mexico 1 -800-634-6438 other side dope dry turn piece over spray other side Allow dry repeat two-step process second coat Follow same procedure wing panels Block up panel maintain washout dope dries recommend using third coat dope fuselage because additional r Shoot Perfect Aerials CREATE RN EXCITING N FROFITARLY FCC AERIAL SYSTEM FROFESSIONRLLT FROOUCED VIDEOTAPE ORS ALL INFORMATION TO MARE TOUT VENTURES SUCCESS CAMERA U SNALES INSTALLATION PROPER LENSES SRECIRLIZEO AIRCRAFT AESANC OFF-TOEISTELF AIRCRAFT MARS CRMERA MORALE COSOTRUCTION RNC S 3 TECONIAU ES AEMOUSTRATES NOW INCLUMES FORTANE MACH USES STILL CAMERA CNMCORAER RUT FRANSMIflER RE LARRY MIRSAMARS SrMMMESAMM REST ANN MONA X June 1991 181 6th Annual Flight Fest June 22 & 23 1991 Call write registration Information today tA Sponsored City Almnso8ordo Promotion Board Space Centet Ahmogordo Model Avitrrs Spacepon Model Rocket Association 80 - 90 4-strokes unpiped 60 2-strokes 6 1/4 lb 700 sq Excellent design serious aerobatic pilot Terrific vertical performance Fly smooth aerobatic routines constant slow medium speeds BASIC KIT$125 plus postage sheeted foam wing halves aileron servo wells wire harness tunnels gear mounts Engine mount canopy main gear tibreglas reinforcing cloth kit Fuselage parts cut matched immediate accurate assembly Contest grade balsa ply Comprehensive instruction manual including flight trim ALSO AVAILABLE built kit $225 Ready finish Kit $325 Order Direct 1 800 243-3384 ~aiity -. Performance 11015 66th St Mira Loma CA 91752 handling receives Fairing cabane landing struts simple Take piece -in-wide bond paper appropriate length fold down middle wrap around strut 1A2 x 42 balsa strip Cement CyA place round off trailing edge Dope struts two coats clear followed two coats Sig Fokker Red lift-struts wheel disks may also doped red point Use flat black paint simulate tires marked tire/wheel junction using draftsmans compass ink pen point filled Floquil Locomotive Black made easy finish painting tire Initial assembly Remove tissue covering recesses bottom %-in center rib Place wing upside down work surface block position its stationary Cut two pieces y32-ID A-in-OD aluminum tubing slip over %2 tubing cabane struts Turn fuselage upside down its still cabane struts fit A-in tubing recesses center rib Tack piece tubing single drop CyA glue has hardened draw fuselage forward leaving 1A-in tubing wing correctly aligned cabanes fuselage doesnt withdraw freely realign strut ends until parallel same angle relative top fuselage before repeating attempt Permanently CyA wing tubing place Check fit lift-struts between wing fuselage should fit snugly being tight also should distort wing Since wing fixed slot horizontal stabilizer cut larger front rear allows angle incidence stabilizer adjusted inserting shims leading edge achieve desired glide characteristics Cement stabilizer place spar Make sure fin/rudder congruent centerline fuselage before gluing Add tail skid stabilizer struts must installed until after flight testing trimming Insert landing gear struts fuselage tubing dont glue Cut 534 -in length 032 music wire axle Bind axle thread landing gear struts leaving 5/ side wheels CyA place Install small washer add wheels Secure /16 piece A2-ID aluminum tubing again using drop CyA Lastly install motor propeller Balancing model should now complete except battery wiring switch/charging jack panel Support airplane wing lift strut fittings place battery fuselage top slide forward aft until craft balances horizontally Build battery compartment precisely balance point eliminates need trim weight its left bottom fuselage uncovered Build battery compartment underside fuselage Follow plans add additional crossmembers structure necessary Mount switch close charging jack panel install wiring indicated motor instruction sheet Cover dope fuselage bottom Markings trim available photos data indicate original HL-2 red over except natural aluminum nose cowling HL-2 lettering sketch Harold Lloyds horn-rimmed glasses done black side fuselage No registration numbers other markings evident As typical open-cockpit airplanes cockpit edges padded save wear tear both passengers airframe piece split black tubing CyAd around edge cockpit nicely simulates padding stripped plastic insulation piece 12-gauge automotive wire slit X-Acto blade Add windshields shown Flying Wait day almost no wind Check balance point again model should balance immediately /16 / aft mainie upper spar Remove propeller test glide model over proverbial tall grass Adjust stabilizer shims until model glides satisfaction Reinstall prop attempt powered flight no quarter charge Increase power run gradually adding right left thrust desired 10 right thrust rudder tab bent approximately /32 left prototype climbs glides large left circle 182 Model Aviation j Put Fun Back Fun Fly Get ROUN TUIT Today Its round S flat flies 30 Flying DISC STOL SUPERIOR Smell Field 8 FUN FLY Aircraft STABLE PREDICTABLE EtAGILE 54 795pjs H shipplni TX flea add 7% sales tax VISA Foam & Lite Ply construction ELEvON Mixar Includad 25-45 old 3-3Slbs Accurate ouALITY Materials MIN Const Time HOVERABLE Durable UNUSUAL Will NOT Spin Model Products Box 10998 Suite 543 Auetin TX 78766 512 2501420 512 444-3368 As seen Hit Movie TOY SOLDIERSTM HL-2 excellent flierin fact its really too good Ive almost lost twice thermals little 3 1/2-Oz ship flew eight 10 minutes one-third charge chase nearly mile time Ive never charged battery pack 40 percent capacity Normalthat nonthermalduration ranges 145 215 first Scale semiscale model Ive built begs dethermalizer closing wish thank James R Smith reviewing construction sequences making number helpful suggestions References Cynk Jerzy B Polish Aircraft 1893-1 939 Hannan Bill International Peanuts & Pistachios vol 5 Fly Electric FF Duration/Murphy Continued page 62 design highly dependent ability wings handle tremendous bending loads failure Two-piece wings compound problem placing joint maximum load location obviously center wing Since %2 music wire wing joiners utilized good success past decade bench test goal established fabricate spar would successfully bend %2 wire before spar itself might fail Initial tests indicated glues alone would accomplish requirement ultimately technique spiral wrapping structure Kevlar thread developed transferred loads thread making type glues used basically unimportant next step tailor weights thicknesses various materials arrive optimum-strength lowestweight determination An inadvertent field test came about model nosed full power dive 1000 ft up smacked concrete runway WPAFB wing did W THE SUPERIOR GLOW PLUGS FOR AST FLYERS ARE BA CK II Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1 /2A GloBee plugs designed exclusivelyfor 0491051 Cox engines Ask new GB-5RX Speed Plug GB-SR Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 flutter fold under stress dive examination remains yielded unscathed spar spar removed wing rewrapped Kevlar thread used subsequent wing sketch showing double tapered spar fabrication should rather selfexplanatory actual root tip dimensions depending particular wing panel length airfoil used Note carbon-reinforced basswood sides 12 long help make up joiner box inboard end fabricated spar calculator handy tool compute dimensions various tapered locations step-by-step recommended procedure would first determine required dimensions components including balsa core inboard end balsa core 2 shorter top bottom carbon plates permit pocket receive brass tube joiner wire initial construction step epoxy 4-in length 007 carbon onto end 12-in long 3-in wide sheet / basswood cut four 12in long strips now carbonreinforced basswood width desired root dimension become sides spars Now cut tapered balsa core straight grain 6-7 balsa can sanded shape initial /s square oversized Y16 sq stock depending required dimensions top bottom caps tapered strips 021 thick carbon sheet components trimmed shape spar assembled using cyanoacrylate cement CA After final sanding spiral wrap assembled spar using Kevlar thread pitch /64 root increasing 3A6-in pitch outboard end cement coat retain place Norm states pair finished joiner spars using technique should tip scales 10 11 grams completed spar used construction wing panel upon completion 2-in length Y32 ID brass tubing potted place previously hollow carbon box end using mixture epoxy microballoons Obviously foregoing condensed version how-its done care detailed instructions send SASE Norm will gladly send copy formal uncondensed article total process have space relate word-for-word Norms address found elsewhere column certainly thank him quite informative building tip FF Publications 1990 edition National Free Flight Society Symposia 129-page collection design theory plans photos interest Free Flighters worldwide still available Symposia has published fail annually NFFS since 1968 issue covers various aspects both Indoor Outdoor Free Flight stateof-the-art competition well sport flying Among other items features current issue contains power articles hiUlVIlidli UUMV jj 1/ 1/ scale $795 iJIUV P/H Full figures $1995 plus $4 P/HCivilians 1/3 1/4 scale WWI Barnstormer 1/4 WWII Navy 1/5 WWII USAAF 1/ scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Ohficuts Gmntlmmmn 537-7323 Box 537 RD 2 Hampton NJ 08827 June 1991 183 Mace White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor