NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents
Edition: Model Aviation - 1995/06
Page Numbers: 49, 51, 52, 53, 54, 55, 56, 57, 58
NO OCR TEXT 1 J perhaps fastest-growing free flight event F iginaily comprised mainly 1/2A ffiers has now attracted participants power classes including FiC large FAd power class event flown major AMA FM contests beginning 1995 has included prestigious Americas Cup competition has suggested FiC should replaced F1J Junior world Champs Two schools thought have evolved concerning best way design FlJ model group believes since FiG airplanes epitome power models stands reason good FlJ should emulate FiC So group mini-FiG designs has come about best represented Bill Lynchs Pegasus Dave Parsons Gathexis Redux airplanes high-aspect-ratio full-bunting synthetic material technological wonders fly very well indeed other school thought represented Northern Light rules F1J much different FiG designs should take advantage rules FlJ rules like AMA Gas FAI began design process AMA-type airplane Exotic materials needed strength nor meet minimum weight spite availability spaceage materials models built balsa still lightest 112A airplanes Northern Light has under development since October 1989 design objective build simple fixed-tail FlJ would fly well auto surface airplane goal avoid dependence complex mechanical devices such heavy multifunction timers therefore have airplane reliable easy fly requirements demanded inherent stability low drag light weight Maybe its old-fashioned still believe can achieve ultra-highperformance careful design fixed geometry will concede perhaps ultimate perfonnance can achieved ultimate-technology equipment chief attractions F1J over FlC ultimate performance yet necessary five rounds fly contests always finish day fly long flyoff rounds afternoon instead 10-minute dawn flyoff PlC So event still frequently boils down thermal picking current third version design differs prototype minor ways Covering material stab size changed pylon has lowered narrowed timer-start button has added Airframe drag minimized use tapered-tube fuselage built-up pylon fin recessed timer internal fuel bladder internal DT rudder lines built-up pylon fin have lower drag flat structures less critical construction misalignment June 1995 51 Design reflects authors preference relatively simple AMA Gas-type model F1J competition Weight 775 ounces AD 06 power Fuse DT used Covering wing tissue allows lighter structure would required synthetic covering used all-weather airplane desired recommend heavier wing structure Mylar covering water resistance few additional ribs slightly larger wood sizes should suffice airfoils derived Tom Hutchinsons excellent Maverick turn used Ron St Jeans Ramrod sections thinned percent An elliptical planform used lower induced drag please eye three-function windup toy timer weighing five grams used weight reduction simplicity An APC 57 x 3 propeller used high-nitro fuel AD 06 can expected turn range 26000- 27000 rpm flying weight 220 grams 775 oz wing loading 34 ounces per square foot aspect ratio 88 wing section 85% thick Stab area 26% wing 84% section Center gravity CG 78% airplane has gratifying contest record selected National Free Flight Society 1993 Small Power Model Year 280-square-inch Stels 049-powered 1/2A version has slightly different proportions weighs 11/2 ounces less flies about same CONSTRUCTION no exotic materials special tools techniques required construction beginners project least average building skills needed careful planning must design based light weight low drag soit should weigh no 775 ounces complete propeller accomplish goal necessary weigh materials substitute heavier structure also vital keep tail end light Part models stability forgiveness can attributed short nose moment can attained light aft end An accurate gram scale required well circle template holes range 1/2 11/8 inches 12-inch T-bar sander indispensable tool use mini block plane shape leading trailing edges Notch sticks very useful may made up spruce sticks strips sandpaper glued Finally mandrel required roll fuselage tabe standard five-foot one-piece pool cue works fine Carbon fiber 003 used dihedral braces reinforce rolled balsa fuselage No machining special hardware required except radial engine mount merely new engine 52 Model Aviation ne AD 06/strong 1/2A engine Coveringlfinish Japanese tissue dope/epoxy wing & fuselage /2-mu mylar stab Three-function timer made windup toy controls auto rudder qulck-DT test flying remote fuel line pinchoff engine shutdown author launches NL 330 1994 US Free Flight Championships Lost Hills California Fred Terzian photo N OSTASROL BRACES -SOS CF SOP APSE SOflORS SOS CF SOP SOS SOrTeR Im_I______zII1 1116 IES[L[ J -- -V\J 300 ROOSIN SORT WSO LETOTES PANEL SOLO ALL CRIER PANELS FLAT - ABS AMOS RIrro II SPlIT OSOSELS ~1 UOTTTOs iiiIiIiL 11111111111111 t -______ EOJ&E 00055 ORATES BIB ROT OLL SIRS IITBOSSA CORORO TORtE RIBS ST ALL SISFOSOL ASSESAS // s~IOR OUSARTS TISSUE COOFA / 5 ---5 ______________ _______________ BA CS eA Ii K j K 2 / S-ItS OIIAFOSOL ml OTAeESRO TATWLOTE 7N\ SCOTT TOSSES TO FITF\\rJ SO TIMES. TOTO SRI TO SORE-Lil COSTROS TORTS TOO FLY ISO PLY ASOR MLRAATEfA MOOt ---A~R5 FORRIC SISSEriii TSS SLUM OFFSET TO SOOT Rn RTRe 1100 RIBS SR4i1 ASFTSR ISO PLT GROSS FILLET TSR S PLOS MO SOBERS r ESATER LBOESUISE-5 0 ----IT TOO SSOIRLER It____ QMR AS OA L tSSOE5rI ICOVES FUSELAGE RITE ROSUE fl POMS MERE FORMOSA FORMATS SLOR TIlE OF SRMilIlA 55I4FS SOLSO TURE SOAR TM SOS CF STRIPS * ST LIST OCIOR SC RaE ITO ORSTEB MOSOOEAB PLASOS FOSUOULT AFOCEE ptjLl 555Th SLUM MOCOPLATEI ~LLLL PUT FIREWALL PIECES C C CD - Co 0 01I2 C3A45116A TIMES 0 FUTICRORO REMOTE FITOCS OLE MITTS SEC RELATES 0 FOR FOSARESS 1 B 785EEC UlUS IPSO ARES SOS SR IS STAR USES BR SR RI 25% OSMOOR PSOFALLEB OPOSTR PLT BOOS SOOT SELF ADHESIVE SANDING STRIP use D Tee-Bar Products 3 x 5 yds continuous roll Cut length Adheres surfaces Clean neat Instantly ready sanding 100180 280 Grits No132G Garnet $595 No132S Load Free Silicon Carbide $660 TEE-BAR ALUMINUM EXTRUSION _SANDING BLOCK Large True Surface Wont Wear Out Handy use Add 20% postage Send 50 catalog Applied Design Co P0 Box 3384 Torrance CA 90510 CARLSON ENGINE IMPORTS Czech- MP JETS 061 b Plain Bearing Glow 5000 5500 6000 Bail Bearing Glow 650070007500 Ball Bearing Diesel 650070007500 engines include silencer Add *4 *2 P&II per dw VIsoSMIC OKi 7 e Sddiaa 6 d &940e4 Carison Engine Imports- 814 E Marconi Ave Phoenix Az USA 85022- Ph/Fax 602-863-1684 backplate enlarged flange mounting Wing usually build wing first can dope building rigging fuselage Wing construction provides high stiffness-to-weight ratio covered tissue again synthetic coverings reconunended unless structure beefed up Select lumber wing before beginning Hereafter balsa weights shall refer 3 x 36 sheet 36-inch sticknot wood density 1/8 square main spar caps should weigh 2-25 grams Leading trailing edges made 4-5g stock ribs 13g stock except dihedral break ribs 18-20g aft spar will stiff enough 12g Spruce sticks forward spars quite uniform weight about 2g Make 1/32 spar web 10-I lg wood lumber will weigh out perfectly place heavier wood right side wing wing still does come out tight-heavy complete place small amount ballast tip Cut parallel ribs shape including half-ribs notch spars using spruce stick 120-grit sandpaper glued Make notches tight rely entirely adhesive hold wing together Cut diagonal ribs approximate shape make little long notch aft spar Drill /16 vent hole rib Build center panels first build /32 washin right main panel Glue parallel ribs half-ribs gussets place Make balsa dihedral template use set angles center polyhedral ribs Install top spar cap forward spars 1/32 vertical-grain shear web diagonal ribs notched after installation using long notch stick guided notches previously cut parallel ribs Glue aft spar place sand tops ribs roughly shape T-bar Remove center panels plan shape leading edge mini block plane Sand end ribs flat spar ends flush Final-sand top wing ribs alike maybe sanded straight between forward spars since covering will straight anyway Build tip panels same way cant trailing edge polyhedral rib 1/ inch outboard creates slight sweepback tips has aerodynamic effect similar washout no tip washout needed Reduce thickness two outboard ribs top spar bends gradually down tip pieces Block up panels set dihedral washin rib angles come out exactly tight sand side slightly block Glue panels together slow cyanoacrylate CyA glue complete sanded press carbon-fiber dihedral braces place waxed paper sand off excess glue Before applying carbon fiber sand well fine sandpaper prepare surface remove mold-release agent Stabilizer Cut ribs same size 10-12g /20 1/~ balsa notch three spars stab airfoil 84% thick between /32 v/is Final-sand stab thickness before covering Pin tip pieces plan hold leading trailing edge laminations place pins stick pins wood Glue laminations white nitrocellulose glue Ambroid save weightevery gram counts Fit bottom spar cap doublers shape trailing edge plane sanding block Set bottom notch rib bottom spar cap cut off ends rib fit Using notch stick deepen top notches three outboard ribs slightly side allow top spars gradually bend down tip shape ribs T-bar Spars should weigh l-l2g leading edge laminates l3g trailing edge laminates 15g Avoid excess glue As wing drill vent hole rib Fuselage fuselage rolled tube formed standard pool cue using A-grain balsa weighing about 12-14 grams 36inch-long trapezoid 31/2 inches end 11/2 other will yield correct size fuselage may obtained order kits call 1-800-327-7198 log fine kits send $400 Idaho Residents Add 5% State Sales Tax 54 Model Aviation offers largest selection giant scale kits world GIANT SCALE 96 1/4 SCALE 90 1/4 3UALL Yb single three-inch sheet cutting two trapezoids 1/4 end 3/4 other gluing together wood soaked doped start curl wrapped around pool cue wound Ace bandage dry overnight cue should well varnished prevent warping should wrapped waxed paper Remove tube mandrel sand edges remount glue formers pushed down tube forward end using long half-inch dowel drip glued place Use circle template determine former sizes sliding onto fuselage Formers can cut tried released fuselage turning edgewise pinching tube Install 1/16 nylon tubing guides DT auto rudder lines before former seven installed Formers seven eight have cut-out centers because fuel bladder compartment must sealed epoxied intend use timer-start button install i/is nylon guide tube through bladder compartment along fuselage inner wall will interfere bladder Keep tube straight possible using gentie bends bind 020 tnp wire Alter former eight installed roll sheet 1/32 balsa fit internal doubler glue place slow CyA Dont glue seam until doubler place exact location formers critical long enough room bladder timer landing skid can laminated between two firewall pieces placed behind engine mount machined groove Blind nuts engine mounting installed firewall before glued place engine offset 200 right exhaust will clear pylon side airplane opposite timer simple light exhaust extension can made aluminum cigar tube high-temperature epoxy some aircraft safety wire Mount firewall square possible deviations alignment resolved favor slight down left thrust Cut eight strips 003 carbon fiber wide sand glue tube using medium slow CyA Cut timer hole finetooth razor saw top bottom edges faceplate just fit flush fuselage skin Glue blocks formers front rear timer compartment support timer accept timer mounting screws Drive very small wood screws wood remove harden screw holes thin CyA Glass firewall back edge timer compartment 75-ounce cloth using medium CyA pylon built very light /32 balsa weighing no 75 grams per sheet Cut center core pylon exact shape glue perpendicular bottom pylon rib should cut Its stock weighing 15 grams per sheet Add two rectangular side formers top rib Make side pieces slighfly oversize top bottom leave material fairing fuselage wing mount careful gluing first side piece because point straightuess pylon determined Trim off excess leading trailing edges glue other side Use wing form correct wing mount angle apply full-length strips 003 carbon fiber stiffen its edges Sand dihedral angle pylon top using T-bar sander attach wing mount fit pylon fuselage wrap 150grit sandpaper around fuselage 12 inches aft pylon location sand pylon bottom until bottom rib partially contoured 3/s l/ wide slow careful operation ensure straight pylon correct incidence angle Check incidence before gluing using engine timer combined weight 70 grams would best glue pylon last ensure correct balance fin fit attached same manner pylon Draw line fuselage help mount both straight photographs show alternate version fuselage constructed 1 mil hard aluminum foil wrapped around balsa tube instead carbon fiber Techniques fabrication type fuselage beyond scope article brief description method set forth Randy Archer 1991 NFFS Symposium two fuselages types equivalent strength weight June1995 55 focke-WuIf k7 about 30 lb rated FUN-TRAr ASTRACTS low 5175 FOE CATkOO 1ffi 100 Span 2-5 Cu 20-24 Lbs FEATIIDEQ ANOTHER JIM MEISTER SCALE FUN SEMI-KIT Complete Partial Kits also available Phone information Scale Fun flight training manual available $500 ith plans 1A SCALE FUN SEND TO Jim Maistar 993 C-184 S Santa Fe Vista CA 92083 619 7444383 IOBOE PLANS$3500 Balsa-ply construction Complete instructians .2500 Notch tab easy assembly4 Sheets rolled plans Retracts shown Two piece wingI COWL. SPINNEB 5/ Marking templatesHigh lOt airluO tarI FORMES PLASTIC EXHAUST Exlraust auo slots gun blistersvoty slow landingsI C~ intake scuop avaIlable termed plasticFREE C ATAIflflI SHIPPINO000 Accorato scale OutlineIu5LUI TOTAl choice left builder Mechanisms airplane designed icc racing engine weighing about 64 grams screw-in backplate mount used avoid extra weight beam mount engine runs bladder made ical tubing about 1/32 wall thickness need about 3/4 long knot tied end located aft timer minimize CG shift fuel burned An engine-mounted pinchoff device used length monofliament line running timer Windup toy timers used small airplanes have found reliable less sensitive vibration commercial timers After short learning period timer can assembled hour two weight saving half ounce detailed construction article lightweight timers appears 1994 NFFS Symposium timer provides remote fuel pinchoff auto rudder five-second-delay DT test flights fuse DT used official flights timer can single-function long can provide engine stop simultaneous rudder line release timer levers should formed engine rudder lines come off levers actuate feature eliminates need hook up lines flight timer-start button located just behind fuel bladder compartment length fine music wire inserted through guide tube timer wire needs contact timer pawl button released pawl becomes free move Locate DT fuse far enough aft start button airplane may launched burning fingers auto rudder intended provide consistent transitions straight-up climb safety device very convenient fine adjustment trimming rudder mechanism designed rudder held during power phase monofilament rudder line released engine stop pulled over orthodontic elastic band Two timer levers used purpose releases forward engine-mounted fuel pinchoff other releases aft rudder arranged release same time although rudder lever wire can bent change timing necessaly Normal rudder limits center about 3/33 right Covering Finish Cover fuselage pylon fin tissue finish butyrate dope Apply coat K&B Super Poxy equivalent entire fuselage prevent fuel damage An additional coat two should applied firewall back former four Coat inside timer compartment slosh several coats epoxy bladder compartment protect against inevitable bladder bursting Allow coat dry overnight dont expose fuel week stab covered 1/3 mil aluminized mylar clear MonoKote wrap center prevent abrasion delicate mylar during DT motion can use 1/4 mil mylar lighter tail quite fragile must dyed painted visibility Cover wing center rib bays tissue dope two coats cover entire wing tissue center bays double covered being careful preserve washin during process center bays should receive coat Super Poxy maybe whole wing depending much nitro expect use spill Dont overdo epoxy heavy Preflight complete check see Northern Light balances shown plans add ballast necessary first flights CG can forward much inch aft engines less power AD 06 will used CG may remain 1/g forward sure no thrust offsets shim required sure wing keyed appropriate rubber band auto rudder Set rudder straight power phase about /is right glide Test glided rudder straight no stab tilt airplane should glide very wide right circle due wing washin Stretch rubber research formula improvements aggressive field testing give great advantages well Softer engine protection Consistent runs Cooler operating temperatures Byron offers full line fuels ranging 0% 60% nitromethane lower price inferior fuels Whether youre cars boats ducted fans fixed wing rotaiy wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels Contact dealer first doesnt stock Byron Fuel contact us direct Byron Originals Inc ox 279 Grove IA 51445 364-3165 56 Model Aviation Byron art Fuel Production chance engine fuels fuels s mererec rnrougn computer ed controls accurate within 02 itnt operation run after run Byron Fuel wifi satisiv need power mileage plug life reliable engineGet fueling confidence Get Byron Fuel fuel champions band DT line quick DT lever timer Flying Northern Light easy fly requiring DT fuse band installed between flights launch critical model does need thrown Set engine timer three- foursecond run no less engine running close full power mild fuel launch airplane stralght up throw modeljust release itand attempt low-power test flights should accelerate very fast nearly vertical climb right spiral left roll Northern Light rolls left turns right washin causes right wing rise against right turn keeps nose up climb should appear lay over right just before engine quits nonnal effect auto rudder appears happen before engine cutoff because sound delay pattern described adjust rudder very small increments 010the thickness business card Keep engine time about four seconds until pattern correct Northern Light can safely flown either straight up no turn very slight turn right prefer right turn because trimming straight up little like balancing razor blade its great works often goes awry works well long climb vertical have poor engine run bad launch model struck wind gust nose drops toward horizon its dangerous also requires advancing rudder timing kicks before engine cutoff So right turn safest easiest adjust consistent flights provides good transitions minimal rudder deflection Very little turning motion required little altitude sacrificed Use rudder control direction amount turn avoid using left rudder airplane insists turning too tightly right rudder straight shim little left thrust take out some incidence shimming up leading edge stab 010 time Some ballast may required tail compensate glide might also necessary warp some additional washin nose does point skyward /32 really should enough As soon four-second power pattern correct switch high-intro fuel run engine maximum rpm repeat Make required adjustments following flight satisfied increase engine time one-second incrementsWhen power phase adjusted perfection transition glide may adjusted After engine cutoff airplane should coast upward second two begin right glide stalling diving combination right power turn auto rudder will kick airplane right glide circle less power turn used auto rudder required vice versa ideal situation very little power turn just enough rudder deflection cause transition glide circle model drops dive after engine cutoff usually indication nose too high speed drops off due insufficient auto rudder deflection problem cannot cured rudder decalage must increased CG must moved forward Once power transition phases trimmed decalage should changed Cut DT fuse about minute observe glide should large slow circle about 40 seconds 1 minute Changes glide airspeed made ballast changes circle diameter made rudder reduce rudder offset below what needed safe transition large changes circle diameter required stab tilt may used Keep slowing down glide tail weight until slight stall observed remove small amount weight windy days glide circle may reduced about 35 seconds increasing glide rudder deflection have found Northern Light quite versatile has flown AIvIA 12A 4 NORTHEAST AERODYNAMICS INC Tm FINEST KITS YOULL EVER BuILD AND FLY SpecificationsSpecifications Engine Requirementnon schncurle 40Engine Requirementnon schneurle 40 wing Span58Wing Span58 Wing Area 625sq 434 sq ftwing Area 625sq 434 sq ft Fuselage Length42Fuselage Length42 Fuselage Width35 overallFuselage Width35 overall weight Range45 5 lhsWeight Range45 5 lhs Wing Loading Range165 18 ozisq ftWing LoadingRange165 IS ozisq ft Radio Functions4 channelRadio Functions4 channel Specifications Engine Requirementany 60 Wing Span52 Wing Area935 sq Fuselage Length46 Fuselage Width35 Weight Range6 75 lbs Wing Loading Range148 185 Specifications Engine Requirement2 non schneurle 20 Wing Span58 Wing Area625 sq -434 sq ft Fuselage Length43 Fuselage Width35 overall Weight Range55 65 lbs Wing Loading Range195 239 ozisq ft Radio Functions4 channel Ask kits favorite hobby store order direct MC/ VISA welcome. 150 Robinson Road on NH 03051 881-5899 June1995 57 L TRAIN-AIR 40SPORT-AIR 40 largest high wingAn outstanding sport trainer its classand fun-fly ship BEL-AIR 60 rick building easy aerobatic bipIne TNR Technical Inc 279 Douglas Avenue monte Springs FL 32714 407 6824311 407 682-4469 Authorized SANYO Distributor 1-800-346-0601 NSa AAA1/3AAA394 591$300 N11OAA1/3M551 657 25300 NiSON 112 32300 N225AE 1/3A650 642 39300 N25OAAAAAA39417235300 N27OAAA2/3AAA55111649300 KR600AE2/3A65010963300 NSOOAAAA54319481225 N-700MCM54319481300 KR800MEM54319481300 KRI300SCSUBC866165158300 4 COB Receiver Packs $1200 S Cell Receiver Pucks 1500 SPECIFy SOLDER TABS FREE OF CHARGE JA8101BBJ NSSOSO1/2SUBC866101102$450 NOOAR 190116450 NIOGOSOR2/35UBC866129144450 KR1000AE 4/SA650165 95450 KRI200AEA650190106450 KRI400AEA650190109500 N1400SCSIJOC888165187450 KRI806Cf 868165165450 KR200OCC992192271450 4011 Umeelver Packs.. $1800 S Cel Receiver Pecks. 2250 SPECIFY SOLDER TABS FREE OF CHARGE BlZOtA8101EBJ KRI700AE4/3A650259148$750 N17005CRCSUBO866165190 750 KR2300 5065/4 SUOC866192 50 KR28000EC992192 50 4 Cell Receiver Packs $3000 Cell Receiver Packs 3750 SPECIFY SOLDER TABS FREE OF CHARGE SIZEOJA81 01 EBJE N4000 DRLD127236564 .$995 KR4400DD127236511995 KR5000 DEL0127229528..1200 4 Cell Receiver Packs $4000 5 Cell Receiver Packs 5000 SPECIFY SOLDER TABS FREE OF CHARGE 8N-600M1995 8N-700 MC2195 8KR-800 ME2495 Available tollowing configurut ions 1 FIat Pack 8 4 Sticks 2 Squares 2 Sticks 3 1 Stick 2 iiiiZI Two Sticks 2 FiM Peck Square Pack Extensions Futaba J$4006$500 Futaba G$4001 2$500 Airtronics$40024$550 JR/HiTec$40036$600 PS 6126V12AH$1200 PS 127012V7OAH$1995 Light Weight Sized Flat Width Per FootPer Foot 1 inch$10031/4 inch$200 11/2 inch$10033/4 inch$250 2 1/4 inch$1505 inch$300 23/4 inch$150 Categories II addition FlJ Once airplane trimmed seven-second F1J engine run time can increased AMA flying may find very little change required once adjusted longer engine runs trim will satisfactory seven seconds Expect unexpected Expect fly differently day although probably wont begin flying session four- five-second test flight airplane goes very fast invisible changes may require slight adjustments day perhaps during day least until dope has cured adjustments will minor such quest excellence ces AD Engines Bill Lynch 11137 Creekhaven Court Auburn CA 94602 Timer start device gadgets covering materials Starline International 6146 E Cactus Wren Road Scottsdale AZ 85253 Carbon fiber glass cloth Bradley Model Products 1337 Pine Sap Court Orlando FL 32825 Carbon fiber aluminum fuselage tubes Ken Oliver 2213 El Cejo Circle Rancho Cordova CA 95670 Carbon fiber fuselage tubes Ron McBurnett 2265 Greenwood Road Rickreall OR 97371 Tissue other supplies Champion Model Products 880 Carmen Court La Verne CA 91750 Fuel other supplies Aerodyne 1924 E Edinger Santa Ana CA 92705 /2 tml aluminized mylar Bruce Augustus Box 450 Sun Valley ID 83353 Mylar covering material MRL 25108 Marguerite #160 Mission Viejo CA 92692 Symposium Reports NFFS Publications Fred Terzian 4858 Moorpark Ave San Jose CA 95129 4Why risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 58 Model Aviation BATYRKY IJK5 Add $500 shipping & handling ales tax Florida residents