Authors model Royal Navy colors though roundels available Sig Mt g Co actually US WW Color finishing Aerogloss Panel lines ruled drawing ink films final coat clear epoxy applied over everything Linkage operating rudder tab exits rear fuselage side Round plug fuselage just above flap hinge line threaded plastic allows control adjustment super bok isnt thwy t 60-powered CL kerarPcs model fIigh4t S. itML~ WITH THE PUBLICATION modej would like introduce different philos ophy Control Line Precision Aerobatics Stuntfire semi-scale Stunter profile planform suggestive latemodel Spitfire rather being semi-scale model meant approxi mate performance conventional Stunter Stuntfire attempt im prove performance con ventional Stunter Since high parasitic drag part formula high performance bulky semi-scale airframe model fits nicely As bonus provides impressive appearance formula lightweight model high parasitic drag large amount thrust available overcome parasitic drag Such model will have small variation speed due induced drag maneuvers gravity climbing diving lightness derived stringer former fuselage construction borrowed rubber-powered models open D tube wing unique engine mount sup ports using balsa firewall Drag comes both bulky airframe effectively prop having large diameter low pitch combination has produced Stunter capable comfortable pattern speed clocked 64 seconds level laps low-wing configuration gives suf ficient ground clearance 16-in prop excessively long gear struts dihedral necessary bring wing 72 Model Aviation Exhaust headers carved alsa look good well provide convenient hand grip starting Supertigre 60 engine Prop shown 15-5 Rev-Up Wheels Robart tip up vertical center gravity CC elevation No flying problems caused dihedral shown plan low wing mounting also allows tank mounted least partly over leading edge wing reduces CG change resulting stability sensitivity change fuel burned contiguration also puts engine air intake high above ground reducing possibility gesting dirt 4-in bellerank used reduce force required control lines turn ing feel advantage airplane can made turn well very little line tension original bellcrank machined 2024-T-35 alu minum I-beam cross section Nylon bushings used bearing leadout boles pushrod hole shaft made 0-I tool steel heat-treated An aluminum set-screw collar retains crank shaft bushed bellerank weighs 5 grams has pulltested 80 lb An adequate bellerank can made nylon Delrin should thicker adequate strength shaft mounted between pair maple beams cut match dihedral angle lightened milling channel-shaped cross section Outboard engine thrust built gling engine mounts fuselage formers. Balsa /6-in webs connect mounts formers 2 skin obvi ating need plywood firewall very wide body means tank design need compromised fitting narrow fuselage tank features sump retains about 3-sec supply fuel pickup save weight tank permanently installed upright/inverted engine running characteristics equalized raising lowering venturi 0-ring seals usual spraybar/insert type intake used tank should made removable means hatch carb shown plan uses true venturi unlike spraybar-restrictor type fuel system usually used technical discus sion feature beyond scope article advantages reduced restriction inlet air pressure drop same fuel draw use needle valve assembly small orifice makes needle adjustment less sensitive Max IORC assembly particularly useful fuel fitting same side valve assembly valve can ad justed after starting engine having reach over airplane Construction Begin rough-cutting stacking sanding 25 ribs including thick center rib shape root airfoil shown fuselage side view Select very flat piece /2-in plywood length wing Cut slots wide 4 deep rib location Draw two lines representing wing center dihedral should 2 plywood board edge center 1 /2 edge tip August 1983 73 An early 46-powered version Stunifire 58-in span 43-oz weight Plans other pictures fifth model authors semi-scale series strinqer Construction Picture shows unique wing construction method Spars tacked building board proper angle dihedral has cutouts ribs method helps maintain alignment permits easy access wing structure work its progresses Bellcrank spans 4 between lead-out wires Nylon inserts evident wear points Belicrank mounts made maple engine mount material Mounts help brace wing center section Assembled flaps show lightweight construction Spars cut channel cross section trailing edge hollow Spar openings closed 1A6-ln cap Fuselage hg tubes have removed point inset /ie planking has added canopy area Careful selection balsa will pay oft improved flight performance Use 6-8 lb/cu ft balsa stringers 6 lb ribs formers 4 lb sheeting I---- MAPLE L GMAPLE BLOCKSBEAMS TOP4 BE LI ANDBOTTSd2024-U INYLO II CR05 Fl /zl GOLDBERG AR V ISTRIP AlL RGRNvIeBAI IGRIND TO LIGHTEN IDENTICAL TO RIGHT FLAP FROM HERE PIER UPDELR4 INSERT GENTNOZZLE OVERFLOW EELCARA DETAIL FUEL TANK SCREW GRILL FOR SOCKET HEAD SCREWS EZZIZZIEIZZ7C2~3/32 BALSA 4 SCREWSIIEETING MAPLE BELLCBANR MOIINTSF-9S F-AS C B SPINNER 35P40 P40 STYLE IMODIFEDIF-ED F-OO F-OSIL -- ~I3W MOTOR1DLESEL MDIIU DRR0RBJ SUPERTIGRE RO ENDuE WITh IS-S PROPV16OSOLING FilET V32 PLYST 3/32 BALSAS/32 BALSA IC o I11 -if I 01/ U orrSBB Temporarily glue top bottom spars board equally spaced about centerline just drawn accuracy measure spacing rib stack Glue ribs spars forward ends down add trailing edge cap Sheet trailing edge Remove wing turn over board ribs should now nose-up Bend attach wet triangular leading edge nose ribs Sheet leading edge Add bellcrank landing gear blocks Sig blocks allow landing gear removed Next sheet wing center section Warps can removed point twisting wing piece center sheeting added Build flaps attach wing Add bellcrank-to-flap pushrod horns Two ordinary horns can cut use place shown plan point wing should weigh 6-7 oz Unif low-type fuel tank holds 7 7 oz made 008-in tin-plated steel sump pick-up tube retains supply fuel maneuvers1 helping achieve consistent runs 74 Model Aviation WING PLAN TOP VIEW 2-9Z16 GRACING P05W Z-7/16332MW HEREGRACING FROMPIJSHROD HERE Fuselage constructed -in hg tubes visible can also see silicone tube connecting fuel tank vent feed-through fuselage skin TRIANGLE STOCK LEADEGS ESEE 1rn1/RI PLYSPRIICEJV RI BALSA 4 PROW SPARS RETINA IN5/32 B BA TS IN II RIBSACAtill 24 3/32 BASSV 3116 BALSAIII\ -VIA BALSA3/4 TIP CENTER SECTIONIWEIGPT SHEETING AK 2 MA 3/2BASH ASBA SA LI III - I S FULL-SIZE PLANS AVAILABLE . SEE PAGE 164 } BALSA BLOCK WINS TIPS 3/3 BALSA I0 F- 210 332 BAlSA F-250 __________NYLON PUSH BOO AU SE 24% 1/2116 BALSA SHEE BALSA LE 3ZBA~ HOLLOW 05 VH3/Hjn__ BALSA TE3/3 BALSA116 BALSA SHEET F330 HT STEEL NA HOLDER -LSEMAXIORC E SCALENV V16 B SA SHEETING 3/ IA BALSA ROOT RIB AR AG SPRIJCE3/ ATRIM AS SHOWN SPARS-- TIP RIB ______RUSOER OFFSET Il ___________RIGHT ALONG THIS LINE 5/B BALSA SHEET 3/IA BALSA 1 WW ILSH ET PTVIA BALSA/ FINRUD SHEET FLAP CROSS SEC1/RI 1/2 E-25/16 BALSARIBSI 3/W%3/IA -FORSHEEI POST F33 F-13Fl-I____ ------S MOVING LAGE SIDE VI- lA 2W NEW021 RAW --LINK ______---I/IAPLY 1/lA MW 3/32ILS/W BAlSASTRINGERS MAPLE GELLCRANK3/3h*lF\IIL3/ 2 BALSAI TAIL LANCINGIII111xlCLI MOIWITA 5/32 MW/ -IWIL ENIABAY1liI1Utl~ mO/1 IIIiriI II111 III I!II lABII IIll DOSSIER/to //Iih1 jIl-4 II 11IrK LJZ 3/B BALSA BA I/RIBALSA IRIBSV STAB ELEV PEW JOINER 7 LAB BALSA 1/2% BALSA 1 HINGEAR BALSA LOCATIONBIBS H / / /7 5/ BALSAI/4BBLAA 22 3/RI MAPLE NOTE FLAP MOVEMENTS 26 ELEVATOR AVIENT C 32 MO AVIATI N STUNTFIRE 60 PAN 62 AREA 670 31 WEIGHT 51 oz ASPECT RATIO 57 DESIGNEC DRAWN BY SCOTT lAIR TR ING BY 3 DEMARCO ALL BIBMYB BKhffD 3/32 VBALSA y F 390 Bolt engine spinner mounts after drilling mounts adding blind nuts Glue Formers FO F95 place mounts aligning FO spinner backplate Remove engine slide /4-in GD aluminum tubes through furmers number former position inches behind FO Add top side sheeting wet FO F17 Add top side stringers Note fin spar actually last former sure extend stringers far enough past F37 reach fin spar fuel tank permanent should added stage Align epoxy fuselage wing No special reinforcement has necessary Continued page 159 August 1983 75 Fuel tank plumbing installed fuselage front end Within engine compartment AG-in webs connect mounts outside skin Stabilizer uses same lightweight construction flaps Elevator tips extend front hinge line aerodynamically reduce amount force required deflect elevator Its thoughtful design product can ART GROSS ENTERPRISES 12516 MAPLEWOOD AVE EDMONDS WA 98020 Spectator safety compromised time during event end 1980 season orig inating group got together discuss fu ture Quarter Scale Formula Pylon Rac ing expand event everyone felt need other versions Formula t aircraft racewithout jeopardizing competitive use Cosmic Wind Great Planes Bridi kit aircraft resolved requiring scale outline drawings least Cosmic Wind kit turned out /4-scale plus 10% 33 foot also apparent would have limit what versions Formula aircraft could used accomplished stating planes com peted against Cosmic Wind 1947 through 1951 acceptable now six outline drawings approved available use event Shoestring Bonzo Rivets standard stabilizer Swee Pea Midget Mustang Loving Special models can have greater dimensions shown plans smaller end 1981 season realized method limiting engine noise out increasing speeds detracting appearance aircraft needed proposal made design muffler fill requirements local machinistmodeler Mr Bill Kucharik WPK Enter prise donated time equipment develop unit Thanks Bill mufflers made available anyone became member Quarter Scale Pylon Racing Association cost no greater standard muffler end season everyone agreed muffler answer Another great boost future de velopment Quarter Scale Formula Pylon Racing added sponsorship 1982 season Kraft Systems Loctite Com pany Great Planes Models 1982 season great QSPRA now official organization complete executive committee com mittee has reviewed refined rules regulations now have racing model de signs easy fly due muffler can flown disturbing anyone club field success new approach mula t Pylon Racing Cleveland area has witnessed should lay ground work similar races throughout coun try Details available contacting Ber nie Oldenburgh 27191 Shirley Avenue Euclid OH 44132 Special thanks order Tony Izzi RAMS Club support semi-final race championship event Additional thanks go Circus-Circus support during 1980 season Any organization looking exciting safe event promote model aviation should consider Quarter Scale Formula Pylon Racing Matcfled Performance System TOP PERFORMANCE K&B ENGINES 16 Airplane4Marine K&B FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FItLtR I&B SUPtR FOXY RESIN K&B SUPtR FOXY THINNER K&B SUPER POSY PRMtB K&B SUPER FOXY PAINT K&B MIXING CUPS Stuntfire/Bair Continued page 75 wing-fuselage joint Add V6 sheet flanges between stringers canopy position wing joint shown plan Build fin stabilizer glue fuselage F37 must cut shown Add flanges fin stabilizer Install pushrod guides Build cooling outlet sheet bottom forward fuselage Reinstall engine carve cowling fit around engine cooling fins should closely shrouded best cooling like cooling duct minimum leakage rest engine com partment compartment ventilated scoop fuselage top point airplane should weigh 15-18 oz engine canopy wing panels covered medium silkspan rest covered 00 silkspan Keep paint minimum Flying airplane designed around ST 60BB engine Provided model lightweight 51 oz will perform best narrow 15-5 prop Stuntfires tend come out nose-heavy add tail weight until turns easily small moment inertia large stabilizer volume produce welldamped turn An operating rudder tab shown plan helpful correcting precession large prop absolutely necessary FrOrn~en Age Aviation muatLD 22 T94 FAI~ Radio Control 34Kit #107 $3995 099 15 Engines 48 Wingspan Dealer ributor Inquiries Please send SOs Phone 17031 273-9593 for Flyline Catalog Flylme Models Inc PO Boo 2136 Fairtos Virginia 22031 USA August 1983 159 recommendSUPER HAND SANDER confidence HOBBIESTSee Hobby Dealer HOBBY DEALER Call Distributor Avuijll4JL4J~ UOEL DlSl$ii9uTOAS coMPA tit~0614 OAK 725217 39fr6200 SUPER JET REGULAR JET New E.Z Use bottles New long TAPERED nozzle gets rid major Instant glue irritantit hardly / ever CIOgXI does pin clears immediately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealerhe has now aSET K OUT THESE NEW LOW PRICES SUPER JETREGULARJET , 02 No3n3 $199 oo No385 1195 , 0 NO394 $255 No300 9295 1 00 No3n2 S4981 o No351 9099 2 o No3nn 99952 0z N03n7 $995
Edition: Model Aviation - 1983/08
Page Numbers: 72, 73, 74, 75, 159
Authors model Royal Navy colors though roundels available Sig Mt g Co actually US WW Color finishing Aerogloss Panel lines ruled drawing ink films final coat clear epoxy applied over everything Linkage operating rudder tab exits rear fuselage side Round plug fuselage just above flap hinge line threaded plastic allows control adjustment super bok isnt thwy t 60-powered CL kerarPcs model fIigh4t S. itML~ WITH THE PUBLICATION modej would like introduce different philos ophy Control Line Precision Aerobatics Stuntfire semi-scale Stunter profile planform suggestive latemodel Spitfire rather being semi-scale model meant approxi mate performance conventional Stunter Stuntfire attempt im prove performance con ventional Stunter Since high parasitic drag part formula high performance bulky semi-scale airframe model fits nicely As bonus provides impressive appearance formula lightweight model high parasitic drag large amount thrust available overcome parasitic drag Such model will have small variation speed due induced drag maneuvers gravity climbing diving lightness derived stringer former fuselage construction borrowed rubber-powered models open D tube wing unique engine mount sup ports using balsa firewall Drag comes both bulky airframe effectively prop having large diameter low pitch combination has produced Stunter capable comfortable pattern speed clocked 64 seconds level laps low-wing configuration gives suf ficient ground clearance 16-in prop excessively long gear struts dihedral necessary bring wing 72 Model Aviation Exhaust headers carved alsa look good well provide convenient hand grip starting Supertigre 60 engine Prop shown 15-5 Rev-Up Wheels Robart tip up vertical center gravity CC elevation No flying problems caused dihedral shown plan low wing mounting also allows tank mounted least partly over leading edge wing reduces CG change resulting stability sensitivity change fuel burned contiguration also puts engine air intake high above ground reducing possibility gesting dirt 4-in bellerank used reduce force required control lines turn ing feel advantage airplane can made turn well very little line tension original bellcrank machined 2024-T-35 alu minum I-beam cross section Nylon bushings used bearing leadout boles pushrod hole shaft made 0-I tool steel heat-treated An aluminum set-screw collar retains crank shaft bushed bellerank weighs 5 grams has pulltested 80 lb An adequate bellerank can made nylon Delrin should thicker adequate strength shaft mounted between pair maple beams cut match dihedral angle lightened milling channel-shaped cross section Outboard engine thrust built gling engine mounts fuselage formers. Balsa /6-in webs connect mounts formers 2 skin obvi ating need plywood firewall very wide body means tank design need compromised fitting narrow fuselage tank features sump retains about 3-sec supply fuel pickup save weight tank permanently installed upright/inverted engine running characteristics equalized raising lowering venturi 0-ring seals usual spraybar/insert type intake used tank should made removable means hatch carb shown plan uses true venturi unlike spraybar-restrictor type fuel system usually used technical discus sion feature beyond scope article advantages reduced restriction inlet air pressure drop same fuel draw use needle valve assembly small orifice makes needle adjustment less sensitive Max IORC assembly particularly useful fuel fitting same side valve assembly valve can ad justed after starting engine having reach over airplane Construction Begin rough-cutting stacking sanding 25 ribs including thick center rib shape root airfoil shown fuselage side view Select very flat piece /2-in plywood length wing Cut slots wide 4 deep rib location Draw two lines representing wing center dihedral should 2 plywood board edge center 1 /2 edge tip August 1983 73 An early 46-powered version Stunifire 58-in span 43-oz weight Plans other pictures fifth model authors semi-scale series strinqer Construction Picture shows unique wing construction method Spars tacked building board proper angle dihedral has cutouts ribs method helps maintain alignment permits easy access wing structure work its progresses Bellcrank spans 4 between lead-out wires Nylon inserts evident wear points Belicrank mounts made maple engine mount material Mounts help brace wing center section Assembled flaps show lightweight construction Spars cut channel cross section trailing edge hollow Spar openings closed 1A6-ln cap Fuselage hg tubes have removed point inset /ie planking has added canopy area Careful selection balsa will pay oft improved flight performance Use 6-8 lb/cu ft balsa stringers 6 lb ribs formers 4 lb sheeting I---- MAPLE L GMAPLE BLOCKSBEAMS TOP4 BE LI ANDBOTTSd2024-U INYLO II CR05 Fl /zl GOLDBERG AR V ISTRIP AlL RGRNvIeBAI IGRIND TO LIGHTEN IDENTICAL TO RIGHT FLAP FROM HERE PIER UPDELR4 INSERT GENTNOZZLE OVERFLOW EELCARA DETAIL FUEL TANK SCREW GRILL FOR SOCKET HEAD SCREWS EZZIZZIEIZZ7C2~3/32 BALSA 4 SCREWSIIEETING MAPLE BELLCBANR MOIINTSF-9S F-AS C B SPINNER 35P40 P40 STYLE IMODIFEDIF-ED F-OO F-OSIL -- ~I3W MOTOR1DLESEL MDIIU DRR0RBJ SUPERTIGRE RO ENDuE WITh IS-S PROPV16OSOLING FilET V32 PLYST 3/32 BALSAS/32 BALSA IC o I11 -if I 01/ U orrSBB Temporarily glue top bottom spars board equally spaced about centerline just drawn accuracy measure spacing rib stack Glue ribs spars forward ends down add trailing edge cap Sheet trailing edge Remove wing turn over board ribs should now nose-up Bend attach wet triangular leading edge nose ribs Sheet leading edge Add bellcrank landing gear blocks Sig blocks allow landing gear removed Next sheet wing center section Warps can removed point twisting wing piece center sheeting added Build flaps attach wing Add bellcrank-to-flap pushrod horns Two ordinary horns can cut use place shown plan point wing should weigh 6-7 oz Unif low-type fuel tank holds 7 7 oz made 008-in tin-plated steel sump pick-up tube retains supply fuel maneuvers1 helping achieve consistent runs 74 Model Aviation WING PLAN TOP VIEW 2-9Z16 GRACING P05W Z-7/16332MW HEREGRACING FROMPIJSHROD HERE Fuselage constructed -in hg tubes visible can also see silicone tube connecting fuel tank vent feed-through fuselage skin TRIANGLE STOCK LEADEGS ESEE 1rn1/RI PLYSPRIICEJV RI BALSA 4 PROW SPARS RETINA IN5/32 B BA TS IN II RIBSACAtill 24 3/32 BASSV 3116 BALSAIII\ -VIA BALSA3/4 TIP CENTER SECTIONIWEIGPT SHEETING AK 2 MA 3/2BASH ASBA SA LI III - I S FULL-SIZE PLANS AVAILABLE . SEE PAGE 164 } BALSA BLOCK WINS TIPS 3/3 BALSA I0 F- 210 332 BAlSA F-250 __________NYLON PUSH BOO AU SE 24% 1/2116 BALSA SHEE BALSA LE 3ZBA~ HOLLOW 05 VH3/Hjn__ BALSA TE3/3 BALSA116 BALSA SHEET F330 HT STEEL NA HOLDER -LSEMAXIORC E SCALENV V16 B SA SHEETING 3/ IA BALSA ROOT RIB AR AG SPRIJCE3/ ATRIM AS SHOWN SPARS-- TIP RIB ______RUSOER OFFSET Il ___________RIGHT ALONG THIS LINE 5/B BALSA SHEET 3/IA BALSA 1 WW ILSH ET PTVIA BALSA/ FINRUD SHEET FLAP CROSS SEC1/RI 1/2 E-25/16 BALSARIBSI 3/W%3/IA -FORSHEEI POST F33 F-13Fl-I____ ------S MOVING LAGE SIDE VI- lA 2W NEW021 RAW --LINK ______---I/IAPLY 1/lA MW 3/32ILS/W BAlSASTRINGERS MAPLE GELLCRANK3/3h*lF\IIL3/ 2 BALSAI TAIL LANCINGIII111xlCLI MOIWITA 5/32 MW/ -IWIL ENIABAY1liI1Utl~ mO/1 IIIiriI II111 III I!II lABII IIll DOSSIER/to //Iih1 jIl-4 II 11IrK LJZ 3/B BALSA BA I/RIBALSA IRIBSV STAB ELEV PEW JOINER 7 LAB BALSA 1/2% BALSA 1 HINGEAR BALSA LOCATIONBIBS H / / /7 5/ BALSAI/4BBLAA 22 3/RI MAPLE NOTE FLAP MOVEMENTS 26 ELEVATOR AVIENT C 32 MO AVIATI N STUNTFIRE 60 PAN 62 AREA 670 31 WEIGHT 51 oz ASPECT RATIO 57 DESIGNEC DRAWN BY SCOTT lAIR TR ING BY 3 DEMARCO ALL BIBMYB BKhffD 3/32 VBALSA y F 390 Bolt engine spinner mounts after drilling mounts adding blind nuts Glue Formers FO F95 place mounts aligning FO spinner backplate Remove engine slide /4-in GD aluminum tubes through furmers number former position inches behind FO Add top side sheeting wet FO F17 Add top side stringers Note fin spar actually last former sure extend stringers far enough past F37 reach fin spar fuel tank permanent should added stage Align epoxy fuselage wing No special reinforcement has necessary Continued page 159 August 1983 75 Fuel tank plumbing installed fuselage front end Within engine compartment AG-in webs connect mounts outside skin Stabilizer uses same lightweight construction flaps Elevator tips extend front hinge line aerodynamically reduce amount force required deflect elevator Its thoughtful design product can ART GROSS ENTERPRISES 12516 MAPLEWOOD AVE EDMONDS WA 98020 Spectator safety compromised time during event end 1980 season orig inating group got together discuss fu ture Quarter Scale Formula Pylon Rac ing expand event everyone felt need other versions Formula t aircraft racewithout jeopardizing competitive use Cosmic Wind Great Planes Bridi kit aircraft resolved requiring scale outline drawings least Cosmic Wind kit turned out /4-scale plus 10% 33 foot also apparent would have limit what versions Formula aircraft could used accomplished stating planes com peted against Cosmic Wind 1947 through 1951 acceptable now six outline drawings approved available use event Shoestring Bonzo Rivets standard stabilizer Swee Pea Midget Mustang Loving Special models can have greater dimensions shown plans smaller end 1981 season realized method limiting engine noise out increasing speeds detracting appearance aircraft needed proposal made design muffler fill requirements local machinistmodeler Mr Bill Kucharik WPK Enter prise donated time equipment develop unit Thanks Bill mufflers made available anyone became member Quarter Scale Pylon Racing Association cost no greater standard muffler end season everyone agreed muffler answer Another great boost future de velopment Quarter Scale Formula Pylon Racing added sponsorship 1982 season Kraft Systems Loctite Com pany Great Planes Models 1982 season great QSPRA now official organization complete executive committee com mittee has reviewed refined rules regulations now have racing model de signs easy fly due muffler can flown disturbing anyone club field success new approach mula t Pylon Racing Cleveland area has witnessed should lay ground work similar races throughout coun try Details available contacting Ber nie Oldenburgh 27191 Shirley Avenue Euclid OH 44132 Special thanks order Tony Izzi RAMS Club support semi-final race championship event Additional thanks go Circus-Circus support during 1980 season Any organization looking exciting safe event promote model aviation should consider Quarter Scale Formula Pylon Racing Matcfled Performance System TOP PERFORMANCE K&B ENGINES 16 Airplane4Marine K&B FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FItLtR I&B SUPtR FOXY RESIN K&B SUPtR FOXY THINNER K&B SUPER POSY PRMtB K&B SUPER FOXY PAINT K&B MIXING CUPS Stuntfire/Bair Continued page 75 wing-fuselage joint Add V6 sheet flanges between stringers canopy position wing joint shown plan Build fin stabilizer glue fuselage F37 must cut shown Add flanges fin stabilizer Install pushrod guides Build cooling outlet sheet bottom forward fuselage Reinstall engine carve cowling fit around engine cooling fins should closely shrouded best cooling like cooling duct minimum leakage rest engine com partment compartment ventilated scoop fuselage top point airplane should weigh 15-18 oz engine canopy wing panels covered medium silkspan rest covered 00 silkspan Keep paint minimum Flying airplane designed around ST 60BB engine Provided model lightweight 51 oz will perform best narrow 15-5 prop Stuntfires tend come out nose-heavy add tail weight until turns easily small moment inertia large stabilizer volume produce welldamped turn An operating rudder tab shown plan helpful correcting precession large prop absolutely necessary FrOrn~en Age Aviation muatLD 22 T94 FAI~ Radio Control 34Kit #107 $3995 099 15 Engines 48 Wingspan Dealer ributor Inquiries Please send SOs Phone 17031 273-9593 for Flyline Catalog Flylme Models Inc PO Boo 2136 Fairtos Virginia 22031 USA August 1983 159 recommendSUPER HAND SANDER confidence HOBBIESTSee Hobby Dealer HOBBY DEALER Call Distributor Avuijll4JL4J~ UOEL DlSl$ii9uTOAS coMPA tit~0614 OAK 725217 39fr6200 SUPER JET REGULAR JET New E.Z Use bottles New long TAPERED nozzle gets rid major Instant glue irritantit hardly / ever CIOgXI does pin clears immediately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealerhe has now aSET K OUT THESE NEW LOW PRICES SUPER JETREGULARJET , 02 No3n3 $199 oo No385 1195 , 0 NO394 $255 No300 9295 1 00 No3n2 S4981 o No351 9099 2 o No3nn 99952 0z N03n7 $995
Edition: Model Aviation - 1983/08
Page Numbers: 72, 73, 74, 75, 159
Authors model Royal Navy colors though roundels available Sig Mt g Co actually US WW Color finishing Aerogloss Panel lines ruled drawing ink films final coat clear epoxy applied over everything Linkage operating rudder tab exits rear fuselage side Round plug fuselage just above flap hinge line threaded plastic allows control adjustment super bok isnt thwy t 60-powered CL kerarPcs model fIigh4t S. itML~ WITH THE PUBLICATION modej would like introduce different philos ophy Control Line Precision Aerobatics Stuntfire semi-scale Stunter profile planform suggestive latemodel Spitfire rather being semi-scale model meant approxi mate performance conventional Stunter Stuntfire attempt im prove performance con ventional Stunter Since high parasitic drag part formula high performance bulky semi-scale airframe model fits nicely As bonus provides impressive appearance formula lightweight model high parasitic drag large amount thrust available overcome parasitic drag Such model will have small variation speed due induced drag maneuvers gravity climbing diving lightness derived stringer former fuselage construction borrowed rubber-powered models open D tube wing unique engine mount sup ports using balsa firewall Drag comes both bulky airframe effectively prop having large diameter low pitch combination has produced Stunter capable comfortable pattern speed clocked 64 seconds level laps low-wing configuration gives suf ficient ground clearance 16-in prop excessively long gear struts dihedral necessary bring wing 72 Model Aviation Exhaust headers carved alsa look good well provide convenient hand grip starting Supertigre 60 engine Prop shown 15-5 Rev-Up Wheels Robart tip up vertical center gravity CC elevation No flying problems caused dihedral shown plan low wing mounting also allows tank mounted least partly over leading edge wing reduces CG change resulting stability sensitivity change fuel burned contiguration also puts engine air intake high above ground reducing possibility gesting dirt 4-in bellerank used reduce force required control lines turn ing feel advantage airplane can made turn well very little line tension original bellcrank machined 2024-T-35 alu minum I-beam cross section Nylon bushings used bearing leadout boles pushrod hole shaft made 0-I tool steel heat-treated An aluminum set-screw collar retains crank shaft bushed bellerank weighs 5 grams has pulltested 80 lb An adequate bellerank can made nylon Delrin should thicker adequate strength shaft mounted between pair maple beams cut match dihedral angle lightened milling channel-shaped cross section Outboard engine thrust built gling engine mounts fuselage formers. Balsa /6-in webs connect mounts formers 2 skin obvi ating need plywood firewall very wide body means tank design need compromised fitting narrow fuselage tank features sump retains about 3-sec supply fuel pickup save weight tank permanently installed upright/inverted engine running characteristics equalized raising lowering venturi 0-ring seals usual spraybar/insert type intake used tank should made removable means hatch carb shown plan uses true venturi unlike spraybar-restrictor type fuel system usually used technical discus sion feature beyond scope article advantages reduced restriction inlet air pressure drop same fuel draw use needle valve assembly small orifice makes needle adjustment less sensitive Max IORC assembly particularly useful fuel fitting same side valve assembly valve can ad justed after starting engine having reach over airplane Construction Begin rough-cutting stacking sanding 25 ribs including thick center rib shape root airfoil shown fuselage side view Select very flat piece /2-in plywood length wing Cut slots wide 4 deep rib location Draw two lines representing wing center dihedral should 2 plywood board edge center 1 /2 edge tip August 1983 73 An early 46-powered version Stunifire 58-in span 43-oz weight Plans other pictures fifth model authors semi-scale series strinqer Construction Picture shows unique wing construction method Spars tacked building board proper angle dihedral has cutouts ribs method helps maintain alignment permits easy access wing structure work its progresses Bellcrank spans 4 between lead-out wires Nylon inserts evident wear points Belicrank mounts made maple engine mount material Mounts help brace wing center section Assembled flaps show lightweight construction Spars cut channel cross section trailing edge hollow Spar openings closed 1A6-ln cap Fuselage hg tubes have removed point inset /ie planking has added canopy area Careful selection balsa will pay oft improved flight performance Use 6-8 lb/cu ft balsa stringers 6 lb ribs formers 4 lb sheeting I---- MAPLE L GMAPLE BLOCKSBEAMS TOP4 BE LI ANDBOTTSd2024-U INYLO II CR05 Fl /zl GOLDBERG AR V ISTRIP AlL RGRNvIeBAI IGRIND TO LIGHTEN IDENTICAL TO RIGHT FLAP FROM HERE PIER UPDELR4 INSERT GENTNOZZLE OVERFLOW EELCARA DETAIL FUEL TANK SCREW GRILL FOR SOCKET HEAD SCREWS EZZIZZIEIZZ7C2~3/32 BALSA 4 SCREWSIIEETING MAPLE BELLCBANR MOIINTSF-9S F-AS C B SPINNER 35P40 P40 STYLE IMODIFEDIF-ED F-OO F-OSIL -- ~I3W MOTOR1DLESEL MDIIU DRR0RBJ SUPERTIGRE RO ENDuE WITh IS-S PROPV16OSOLING FilET V32 PLYST 3/32 BALSAS/32 BALSA IC o I11 -if I 01/ U orrSBB Temporarily glue top bottom spars board equally spaced about centerline just drawn accuracy measure spacing rib stack Glue ribs spars forward ends down add trailing edge cap Sheet trailing edge Remove wing turn over board ribs should now nose-up Bend attach wet triangular leading edge nose ribs Sheet leading edge Add bellcrank landing gear blocks Sig blocks allow landing gear removed Next sheet wing center section Warps can removed point twisting wing piece center sheeting added Build flaps attach wing Add bellcrank-to-flap pushrod horns Two ordinary horns can cut use place shown plan point wing should weigh 6-7 oz Unif low-type fuel tank holds 7 7 oz made 008-in tin-plated steel sump pick-up tube retains supply fuel maneuvers1 helping achieve consistent runs 74 Model Aviation WING PLAN TOP VIEW 2-9Z16 GRACING P05W Z-7/16332MW HEREGRACING FROMPIJSHROD HERE Fuselage constructed -in hg tubes visible can also see silicone tube connecting fuel tank vent feed-through fuselage skin TRIANGLE STOCK LEADEGS ESEE 1rn1/RI PLYSPRIICEJV RI BALSA 4 PROW SPARS RETINA IN5/32 B BA TS IN II RIBSACAtill 24 3/32 BASSV 3116 BALSAIII\ -VIA BALSA3/4 TIP CENTER SECTIONIWEIGPT SHEETING AK 2 MA 3/2BASH ASBA SA LI III - I S FULL-SIZE PLANS AVAILABLE . SEE PAGE 164 } BALSA BLOCK WINS TIPS 3/3 BALSA I0 F- 210 332 BAlSA F-250 __________NYLON PUSH BOO AU SE 24% 1/2116 BALSA SHEE BALSA LE 3ZBA~ HOLLOW 05 VH3/Hjn__ BALSA TE3/3 BALSA116 BALSA SHEET F330 HT STEEL NA HOLDER -LSEMAXIORC E SCALENV V16 B SA SHEETING 3/ IA BALSA ROOT RIB AR AG SPRIJCE3/ ATRIM AS SHOWN SPARS-- TIP RIB ______RUSOER OFFSET Il ___________RIGHT ALONG THIS LINE 5/B BALSA SHEET 3/IA BALSA 1 WW ILSH ET PTVIA BALSA/ FINRUD SHEET FLAP CROSS SEC1/RI 1/2 E-25/16 BALSARIBSI 3/W%3/IA -FORSHEEI POST F33 F-13Fl-I____ ------S MOVING LAGE SIDE VI- lA 2W NEW021 RAW --LINK ______---I/IAPLY 1/lA MW 3/32ILS/W BAlSASTRINGERS MAPLE GELLCRANK3/3h*lF\IIL3/ 2 BALSAI TAIL LANCINGIII111xlCLI MOIWITA 5/32 MW/ -IWIL ENIABAY1liI1Utl~ mO/1 IIIiriI II111 III I!II lABII IIll DOSSIER/to //Iih1 jIl-4 II 11IrK LJZ 3/B BALSA BA I/RIBALSA IRIBSV STAB ELEV PEW JOINER 7 LAB BALSA 1/2% BALSA 1 HINGEAR BALSA LOCATIONBIBS H / / /7 5/ BALSAI/4BBLAA 22 3/RI MAPLE NOTE FLAP MOVEMENTS 26 ELEVATOR AVIENT C 32 MO AVIATI N STUNTFIRE 60 PAN 62 AREA 670 31 WEIGHT 51 oz ASPECT RATIO 57 DESIGNEC DRAWN BY SCOTT lAIR TR ING BY 3 DEMARCO ALL BIBMYB BKhffD 3/32 VBALSA y F 390 Bolt engine spinner mounts after drilling mounts adding blind nuts Glue Formers FO F95 place mounts aligning FO spinner backplate Remove engine slide /4-in GD aluminum tubes through furmers number former position inches behind FO Add top side sheeting wet FO F17 Add top side stringers Note fin spar actually last former sure extend stringers far enough past F37 reach fin spar fuel tank permanent should added stage Align epoxy fuselage wing No special reinforcement has necessary Continued page 159 August 1983 75 Fuel tank plumbing installed fuselage front end Within engine compartment AG-in webs connect mounts outside skin Stabilizer uses same lightweight construction flaps Elevator tips extend front hinge line aerodynamically reduce amount force required deflect elevator Its thoughtful design product can ART GROSS ENTERPRISES 12516 MAPLEWOOD AVE EDMONDS WA 98020 Spectator safety compromised time during event end 1980 season orig inating group got together discuss fu ture Quarter Scale Formula Pylon Rac ing expand event everyone felt need other versions Formula t aircraft racewithout jeopardizing competitive use Cosmic Wind Great Planes Bridi kit aircraft resolved requiring scale outline drawings least Cosmic Wind kit turned out /4-scale plus 10% 33 foot also apparent would have limit what versions Formula aircraft could used accomplished stating planes com peted against Cosmic Wind 1947 through 1951 acceptable now six outline drawings approved available use event Shoestring Bonzo Rivets standard stabilizer Swee Pea Midget Mustang Loving Special models can have greater dimensions shown plans smaller end 1981 season realized method limiting engine noise out increasing speeds detracting appearance aircraft needed proposal made design muffler fill requirements local machinistmodeler Mr Bill Kucharik WPK Enter prise donated time equipment develop unit Thanks Bill mufflers made available anyone became member Quarter Scale Pylon Racing Association cost no greater standard muffler end season everyone agreed muffler answer Another great boost future de velopment Quarter Scale Formula Pylon Racing added sponsorship 1982 season Kraft Systems Loctite Com pany Great Planes Models 1982 season great QSPRA now official organization complete executive committee com mittee has reviewed refined rules regulations now have racing model de signs easy fly due muffler can flown disturbing anyone club field success new approach mula t Pylon Racing Cleveland area has witnessed should lay ground work similar races throughout coun try Details available contacting Ber nie Oldenburgh 27191 Shirley Avenue Euclid OH 44132 Special thanks order Tony Izzi RAMS Club support semi-final race championship event Additional thanks go Circus-Circus support during 1980 season Any organization looking exciting safe event promote model aviation should consider Quarter Scale Formula Pylon Racing Matcfled Performance System TOP PERFORMANCE K&B ENGINES 16 Airplane4Marine K&B FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FItLtR I&B SUPtR FOXY RESIN K&B SUPtR FOXY THINNER K&B SUPER POSY PRMtB K&B SUPER FOXY PAINT K&B MIXING CUPS Stuntfire/Bair Continued page 75 wing-fuselage joint Add V6 sheet flanges between stringers canopy position wing joint shown plan Build fin stabilizer glue fuselage F37 must cut shown Add flanges fin stabilizer Install pushrod guides Build cooling outlet sheet bottom forward fuselage Reinstall engine carve cowling fit around engine cooling fins should closely shrouded best cooling like cooling duct minimum leakage rest engine com partment compartment ventilated scoop fuselage top point airplane should weigh 15-18 oz engine canopy wing panels covered medium silkspan rest covered 00 silkspan Keep paint minimum Flying airplane designed around ST 60BB engine Provided model lightweight 51 oz will perform best narrow 15-5 prop Stuntfires tend come out nose-heavy add tail weight until turns easily small moment inertia large stabilizer volume produce welldamped turn An operating rudder tab shown plan helpful correcting precession large prop absolutely necessary FrOrn~en Age Aviation muatLD 22 T94 FAI~ Radio Control 34Kit #107 $3995 099 15 Engines 48 Wingspan Dealer ributor Inquiries Please send SOs Phone 17031 273-9593 for Flyline Catalog Flylme Models Inc PO Boo 2136 Fairtos Virginia 22031 USA August 1983 159 recommendSUPER HAND SANDER confidence HOBBIESTSee Hobby Dealer HOBBY DEALER Call Distributor Avuijll4JL4J~ UOEL DlSl$ii9uTOAS coMPA tit~0614 OAK 725217 39fr6200 SUPER JET REGULAR JET New E.Z Use bottles New long TAPERED nozzle gets rid major Instant glue irritantit hardly / ever CIOgXI does pin clears immediately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealerhe has now aSET K OUT THESE NEW LOW PRICES SUPER JETREGULARJET , 02 No3n3 $199 oo No385 1195 , 0 NO394 $255 No300 9295 1 00 No3n2 S4981 o No351 9099 2 o No3nn 99952 0z N03n7 $995
Edition: Model Aviation - 1983/08
Page Numbers: 72, 73, 74, 75, 159
Authors model Royal Navy colors though roundels available Sig Mt g Co actually US WW Color finishing Aerogloss Panel lines ruled drawing ink films final coat clear epoxy applied over everything Linkage operating rudder tab exits rear fuselage side Round plug fuselage just above flap hinge line threaded plastic allows control adjustment super bok isnt thwy t 60-powered CL kerarPcs model fIigh4t S. itML~ WITH THE PUBLICATION modej would like introduce different philos ophy Control Line Precision Aerobatics Stuntfire semi-scale Stunter profile planform suggestive latemodel Spitfire rather being semi-scale model meant approxi mate performance conventional Stunter Stuntfire attempt im prove performance con ventional Stunter Since high parasitic drag part formula high performance bulky semi-scale airframe model fits nicely As bonus provides impressive appearance formula lightweight model high parasitic drag large amount thrust available overcome parasitic drag Such model will have small variation speed due induced drag maneuvers gravity climbing diving lightness derived stringer former fuselage construction borrowed rubber-powered models open D tube wing unique engine mount sup ports using balsa firewall Drag comes both bulky airframe effectively prop having large diameter low pitch combination has produced Stunter capable comfortable pattern speed clocked 64 seconds level laps low-wing configuration gives suf ficient ground clearance 16-in prop excessively long gear struts dihedral necessary bring wing 72 Model Aviation Exhaust headers carved alsa look good well provide convenient hand grip starting Supertigre 60 engine Prop shown 15-5 Rev-Up Wheels Robart tip up vertical center gravity CC elevation No flying problems caused dihedral shown plan low wing mounting also allows tank mounted least partly over leading edge wing reduces CG change resulting stability sensitivity change fuel burned contiguration also puts engine air intake high above ground reducing possibility gesting dirt 4-in bellerank used reduce force required control lines turn ing feel advantage airplane can made turn well very little line tension original bellcrank machined 2024-T-35 alu minum I-beam cross section Nylon bushings used bearing leadout boles pushrod hole shaft made 0-I tool steel heat-treated An aluminum set-screw collar retains crank shaft bushed bellerank weighs 5 grams has pulltested 80 lb An adequate bellerank can made nylon Delrin should thicker adequate strength shaft mounted between pair maple beams cut match dihedral angle lightened milling channel-shaped cross section Outboard engine thrust built gling engine mounts fuselage formers. Balsa /6-in webs connect mounts formers 2 skin obvi ating need plywood firewall very wide body means tank design need compromised fitting narrow fuselage tank features sump retains about 3-sec supply fuel pickup save weight tank permanently installed upright/inverted engine running characteristics equalized raising lowering venturi 0-ring seals usual spraybar/insert type intake used tank should made removable means hatch carb shown plan uses true venturi unlike spraybar-restrictor type fuel system usually used technical discus sion feature beyond scope article advantages reduced restriction inlet air pressure drop same fuel draw use needle valve assembly small orifice makes needle adjustment less sensitive Max IORC assembly particularly useful fuel fitting same side valve assembly valve can ad justed after starting engine having reach over airplane Construction Begin rough-cutting stacking sanding 25 ribs including thick center rib shape root airfoil shown fuselage side view Select very flat piece /2-in plywood length wing Cut slots wide 4 deep rib location Draw two lines representing wing center dihedral should 2 plywood board edge center 1 /2 edge tip August 1983 73 An early 46-powered version Stunifire 58-in span 43-oz weight Plans other pictures fifth model authors semi-scale series strinqer Construction Picture shows unique wing construction method Spars tacked building board proper angle dihedral has cutouts ribs method helps maintain alignment permits easy access wing structure work its progresses Bellcrank spans 4 between lead-out wires Nylon inserts evident wear points Belicrank mounts made maple engine mount material Mounts help brace wing center section Assembled flaps show lightweight construction Spars cut channel cross section trailing edge hollow Spar openings closed 1A6-ln cap Fuselage hg tubes have removed point inset /ie planking has added canopy area Careful selection balsa will pay oft improved flight performance Use 6-8 lb/cu ft balsa stringers 6 lb ribs formers 4 lb sheeting I---- MAPLE L GMAPLE BLOCKSBEAMS TOP4 BE LI ANDBOTTSd2024-U INYLO II CR05 Fl /zl GOLDBERG AR V ISTRIP AlL RGRNvIeBAI IGRIND TO LIGHTEN IDENTICAL TO RIGHT FLAP FROM HERE PIER UPDELR4 INSERT GENTNOZZLE OVERFLOW EELCARA DETAIL FUEL TANK SCREW GRILL FOR SOCKET HEAD SCREWS EZZIZZIEIZZ7C2~3/32 BALSA 4 SCREWSIIEETING MAPLE BELLCBANR MOIINTSF-9S F-AS C B SPINNER 35P40 P40 STYLE IMODIFEDIF-ED F-OO F-OSIL -- ~I3W MOTOR1DLESEL MDIIU DRR0RBJ SUPERTIGRE RO ENDuE WITh IS-S PROPV16OSOLING FilET V32 PLYST 3/32 BALSAS/32 BALSA IC o I11 -if I 01/ U orrSBB Temporarily glue top bottom spars board equally spaced about centerline just drawn accuracy measure spacing rib stack Glue ribs spars forward ends down add trailing edge cap Sheet trailing edge Remove wing turn over board ribs should now nose-up Bend attach wet triangular leading edge nose ribs Sheet leading edge Add bellcrank landing gear blocks Sig blocks allow landing gear removed Next sheet wing center section Warps can removed point twisting wing piece center sheeting added Build flaps attach wing Add bellcrank-to-flap pushrod horns Two ordinary horns can cut use place shown plan point wing should weigh 6-7 oz Unif low-type fuel tank holds 7 7 oz made 008-in tin-plated steel sump pick-up tube retains supply fuel maneuvers1 helping achieve consistent runs 74 Model Aviation WING PLAN TOP VIEW 2-9Z16 GRACING P05W Z-7/16332MW HEREGRACING FROMPIJSHROD HERE Fuselage constructed -in hg tubes visible can also see silicone tube connecting fuel tank vent feed-through fuselage skin TRIANGLE STOCK LEADEGS ESEE 1rn1/RI PLYSPRIICEJV RI BALSA 4 PROW SPARS RETINA IN5/32 B BA TS IN II RIBSACAtill 24 3/32 BASSV 3116 BALSAIII\ -VIA BALSA3/4 TIP CENTER SECTIONIWEIGPT SHEETING AK 2 MA 3/2BASH ASBA SA LI III - I S FULL-SIZE PLANS AVAILABLE . SEE PAGE 164 } BALSA BLOCK WINS TIPS 3/3 BALSA I0 F- 210 332 BAlSA F-250 __________NYLON PUSH BOO AU SE 24% 1/2116 BALSA SHEE BALSA LE 3ZBA~ HOLLOW 05 VH3/Hjn__ BALSA TE3/3 BALSA116 BALSA SHEET F330 HT STEEL NA HOLDER -LSEMAXIORC E SCALENV V16 B SA SHEETING 3/ IA BALSA ROOT RIB AR AG SPRIJCE3/ ATRIM AS SHOWN SPARS-- TIP RIB ______RUSOER OFFSET Il ___________RIGHT ALONG THIS LINE 5/B BALSA SHEET 3/IA BALSA 1 WW ILSH ET PTVIA BALSA/ FINRUD SHEET FLAP CROSS SEC1/RI 1/2 E-25/16 BALSARIBSI 3/W%3/IA -FORSHEEI POST F33 F-13Fl-I____ ------S MOVING LAGE SIDE VI- lA 2W NEW021 RAW --LINK ______---I/IAPLY 1/lA MW 3/32ILS/W BAlSASTRINGERS MAPLE GELLCRANK3/3h*lF\IIL3/ 2 BALSAI TAIL LANCINGIII111xlCLI MOIWITA 5/32 MW/ -IWIL ENIABAY1liI1Utl~ mO/1 IIIiriI II111 III I!II lABII IIll DOSSIER/to //Iih1 jIl-4 II 11IrK LJZ 3/B BALSA BA I/RIBALSA IRIBSV STAB ELEV PEW JOINER 7 LAB BALSA 1/2% BALSA 1 HINGEAR BALSA LOCATIONBIBS H / / /7 5/ BALSAI/4BBLAA 22 3/RI MAPLE NOTE FLAP MOVEMENTS 26 ELEVATOR AVIENT C 32 MO AVIATI N STUNTFIRE 60 PAN 62 AREA 670 31 WEIGHT 51 oz ASPECT RATIO 57 DESIGNEC DRAWN BY SCOTT lAIR TR ING BY 3 DEMARCO ALL BIBMYB BKhffD 3/32 VBALSA y F 390 Bolt engine spinner mounts after drilling mounts adding blind nuts Glue Formers FO F95 place mounts aligning FO spinner backplate Remove engine slide /4-in GD aluminum tubes through furmers number former position inches behind FO Add top side sheeting wet FO F17 Add top side stringers Note fin spar actually last former sure extend stringers far enough past F37 reach fin spar fuel tank permanent should added stage Align epoxy fuselage wing No special reinforcement has necessary Continued page 159 August 1983 75 Fuel tank plumbing installed fuselage front end Within engine compartment AG-in webs connect mounts outside skin Stabilizer uses same lightweight construction flaps Elevator tips extend front hinge line aerodynamically reduce amount force required deflect elevator Its thoughtful design product can ART GROSS ENTERPRISES 12516 MAPLEWOOD AVE EDMONDS WA 98020 Spectator safety compromised time during event end 1980 season orig inating group got together discuss fu ture Quarter Scale Formula Pylon Rac ing expand event everyone felt need other versions Formula t aircraft racewithout jeopardizing competitive use Cosmic Wind Great Planes Bridi kit aircraft resolved requiring scale outline drawings least Cosmic Wind kit turned out /4-scale plus 10% 33 foot also apparent would have limit what versions Formula aircraft could used accomplished stating planes com peted against Cosmic Wind 1947 through 1951 acceptable now six outline drawings approved available use event Shoestring Bonzo Rivets standard stabilizer Swee Pea Midget Mustang Loving Special models can have greater dimensions shown plans smaller end 1981 season realized method limiting engine noise out increasing speeds detracting appearance aircraft needed proposal made design muffler fill requirements local machinistmodeler Mr Bill Kucharik WPK Enter prise donated time equipment develop unit Thanks Bill mufflers made available anyone became member Quarter Scale Pylon Racing Association cost no greater standard muffler end season everyone agreed muffler answer Another great boost future de velopment Quarter Scale Formula Pylon Racing added sponsorship 1982 season Kraft Systems Loctite Com pany Great Planes Models 1982 season great QSPRA now official organization complete executive committee com mittee has reviewed refined rules regulations now have racing model de signs easy fly due muffler can flown disturbing anyone club field success new approach mula t Pylon Racing Cleveland area has witnessed should lay ground work similar races throughout coun try Details available contacting Ber nie Oldenburgh 27191 Shirley Avenue Euclid OH 44132 Special thanks order Tony Izzi RAMS Club support semi-final race championship event Additional thanks go Circus-Circus support during 1980 season Any organization looking exciting safe event promote model aviation should consider Quarter Scale Formula Pylon Racing Matcfled Performance System TOP PERFORMANCE K&B ENGINES 16 Airplane4Marine K&B FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FItLtR I&B SUPtR FOXY RESIN K&B SUPtR FOXY THINNER K&B SUPER POSY PRMtB K&B SUPER FOXY PAINT K&B MIXING CUPS Stuntfire/Bair Continued page 75 wing-fuselage joint Add V6 sheet flanges between stringers canopy position wing joint shown plan Build fin stabilizer glue fuselage F37 must cut shown Add flanges fin stabilizer Install pushrod guides Build cooling outlet sheet bottom forward fuselage Reinstall engine carve cowling fit around engine cooling fins should closely shrouded best cooling like cooling duct minimum leakage rest engine com partment compartment ventilated scoop fuselage top point airplane should weigh 15-18 oz engine canopy wing panels covered medium silkspan rest covered 00 silkspan Keep paint minimum Flying airplane designed around ST 60BB engine Provided model lightweight 51 oz will perform best narrow 15-5 prop Stuntfires tend come out nose-heavy add tail weight until turns easily small moment inertia large stabilizer volume produce welldamped turn An operating rudder tab shown plan helpful correcting precession large prop absolutely necessary FrOrn~en Age Aviation muatLD 22 T94 FAI~ Radio Control 34Kit #107 $3995 099 15 Engines 48 Wingspan Dealer ributor Inquiries Please send SOs Phone 17031 273-9593 for Flyline Catalog Flylme Models Inc PO Boo 2136 Fairtos Virginia 22031 USA August 1983 159 recommendSUPER HAND SANDER confidence HOBBIESTSee Hobby Dealer HOBBY DEALER Call Distributor Avuijll4JL4J~ UOEL DlSl$ii9uTOAS coMPA tit~0614 OAK 725217 39fr6200 SUPER JET REGULAR JET New E.Z Use bottles New long TAPERED nozzle gets rid major Instant glue irritantit hardly / ever CIOgXI does pin clears immediately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealerhe has now aSET K OUT THESE NEW LOW PRICES SUPER JETREGULARJET , 02 No3n3 $199 oo No385 1195 , 0 NO394 $255 No300 9295 1 00 No3n2 S4981 o No351 9099 2 o No3nn 99952 0z N03n7 $995
Edition: Model Aviation - 1983/08
Page Numbers: 72, 73, 74, 75, 159
Authors model Royal Navy colors though roundels available Sig Mt g Co actually US WW Color finishing Aerogloss Panel lines ruled drawing ink films final coat clear epoxy applied over everything Linkage operating rudder tab exits rear fuselage side Round plug fuselage just above flap hinge line threaded plastic allows control adjustment super bok isnt thwy t 60-powered CL kerarPcs model fIigh4t S. itML~ WITH THE PUBLICATION modej would like introduce different philos ophy Control Line Precision Aerobatics Stuntfire semi-scale Stunter profile planform suggestive latemodel Spitfire rather being semi-scale model meant approxi mate performance conventional Stunter Stuntfire attempt im prove performance con ventional Stunter Since high parasitic drag part formula high performance bulky semi-scale airframe model fits nicely As bonus provides impressive appearance formula lightweight model high parasitic drag large amount thrust available overcome parasitic drag Such model will have small variation speed due induced drag maneuvers gravity climbing diving lightness derived stringer former fuselage construction borrowed rubber-powered models open D tube wing unique engine mount sup ports using balsa firewall Drag comes both bulky airframe effectively prop having large diameter low pitch combination has produced Stunter capable comfortable pattern speed clocked 64 seconds level laps low-wing configuration gives suf ficient ground clearance 16-in prop excessively long gear struts dihedral necessary bring wing 72 Model Aviation Exhaust headers carved alsa look good well provide convenient hand grip starting Supertigre 60 engine Prop shown 15-5 Rev-Up Wheels Robart tip up vertical center gravity CC elevation No flying problems caused dihedral shown plan low wing mounting also allows tank mounted least partly over leading edge wing reduces CG change resulting stability sensitivity change fuel burned contiguration also puts engine air intake high above ground reducing possibility gesting dirt 4-in bellerank used reduce force required control lines turn ing feel advantage airplane can made turn well very little line tension original bellcrank machined 2024-T-35 alu minum I-beam cross section Nylon bushings used bearing leadout boles pushrod hole shaft made 0-I tool steel heat-treated An aluminum set-screw collar retains crank shaft bushed bellerank weighs 5 grams has pulltested 80 lb An adequate bellerank can made nylon Delrin should thicker adequate strength shaft mounted between pair maple beams cut match dihedral angle lightened milling channel-shaped cross section Outboard engine thrust built gling engine mounts fuselage formers. Balsa /6-in webs connect mounts formers 2 skin obvi ating need plywood firewall very wide body means tank design need compromised fitting narrow fuselage tank features sump retains about 3-sec supply fuel pickup save weight tank permanently installed upright/inverted engine running characteristics equalized raising lowering venturi 0-ring seals usual spraybar/insert type intake used tank should made removable means hatch carb shown plan uses true venturi unlike spraybar-restrictor type fuel system usually used technical discus sion feature beyond scope article advantages reduced restriction inlet air pressure drop same fuel draw use needle valve assembly small orifice makes needle adjustment less sensitive Max IORC assembly particularly useful fuel fitting same side valve assembly valve can ad justed after starting engine having reach over airplane Construction Begin rough-cutting stacking sanding 25 ribs including thick center rib shape root airfoil shown fuselage side view Select very flat piece /2-in plywood length wing Cut slots wide 4 deep rib location Draw two lines representing wing center dihedral should 2 plywood board edge center 1 /2 edge tip August 1983 73 An early 46-powered version Stunifire 58-in span 43-oz weight Plans other pictures fifth model authors semi-scale series strinqer Construction Picture shows unique wing construction method Spars tacked building board proper angle dihedral has cutouts ribs method helps maintain alignment permits easy access wing structure work its progresses Bellcrank spans 4 between lead-out wires Nylon inserts evident wear points Belicrank mounts made maple engine mount material Mounts help brace wing center section Assembled flaps show lightweight construction Spars cut channel cross section trailing edge hollow Spar openings closed 1A6-ln cap Fuselage hg tubes have removed point inset /ie planking has added canopy area Careful selection balsa will pay oft improved flight performance Use 6-8 lb/cu ft balsa stringers 6 lb ribs formers 4 lb sheeting I---- MAPLE L GMAPLE BLOCKSBEAMS TOP4 BE LI ANDBOTTSd2024-U INYLO II CR05 Fl /zl GOLDBERG AR V ISTRIP AlL RGRNvIeBAI IGRIND TO LIGHTEN IDENTICAL TO RIGHT FLAP FROM HERE PIER UPDELR4 INSERT GENTNOZZLE OVERFLOW EELCARA DETAIL FUEL TANK SCREW GRILL FOR SOCKET HEAD SCREWS EZZIZZIEIZZ7C2~3/32 BALSA 4 SCREWSIIEETING MAPLE BELLCBANR MOIINTSF-9S F-AS C B SPINNER 35P40 P40 STYLE IMODIFEDIF-ED F-OO F-OSIL -- ~I3W MOTOR1DLESEL MDIIU DRR0RBJ SUPERTIGRE RO ENDuE WITh IS-S PROPV16OSOLING FilET V32 PLYST 3/32 BALSAS/32 BALSA IC o I11 -if I 01/ U orrSBB Temporarily glue top bottom spars board equally spaced about centerline just drawn accuracy measure spacing rib stack Glue ribs spars forward ends down add trailing edge cap Sheet trailing edge Remove wing turn over board ribs should now nose-up Bend attach wet triangular leading edge nose ribs Sheet leading edge Add bellcrank landing gear blocks Sig blocks allow landing gear removed Next sheet wing center section Warps can removed point twisting wing piece center sheeting added Build flaps attach wing Add bellcrank-to-flap pushrod horns Two ordinary horns can cut use place shown plan point wing should weigh 6-7 oz Unif low-type fuel tank holds 7 7 oz made 008-in tin-plated steel sump pick-up tube retains supply fuel maneuvers1 helping achieve consistent runs 74 Model Aviation WING PLAN TOP VIEW 2-9Z16 GRACING P05W Z-7/16332MW HEREGRACING FROMPIJSHROD HERE Fuselage constructed -in hg tubes visible can also see silicone tube connecting fuel tank vent feed-through fuselage skin TRIANGLE STOCK LEADEGS ESEE 1rn1/RI PLYSPRIICEJV RI BALSA 4 PROW SPARS RETINA IN5/32 B BA TS IN II RIBSACAtill 24 3/32 BASSV 3116 BALSAIII\ -VIA BALSA3/4 TIP CENTER SECTIONIWEIGPT SHEETING AK 2 MA 3/2BASH ASBA SA LI III - I S FULL-SIZE PLANS AVAILABLE . SEE PAGE 164 } BALSA BLOCK WINS TIPS 3/3 BALSA I0 F- 210 332 BAlSA F-250 __________NYLON PUSH BOO AU SE 24% 1/2116 BALSA SHEE BALSA LE 3ZBA~ HOLLOW 05 VH3/Hjn__ BALSA TE3/3 BALSA116 BALSA SHEET F330 HT STEEL NA HOLDER -LSEMAXIORC E SCALENV V16 B SA SHEETING 3/ IA BALSA ROOT RIB AR AG SPRIJCE3/ ATRIM AS SHOWN SPARS-- TIP RIB ______RUSOER OFFSET Il ___________RIGHT ALONG THIS LINE 5/B BALSA SHEET 3/IA BALSA 1 WW ILSH ET PTVIA BALSA/ FINRUD SHEET FLAP CROSS SEC1/RI 1/2 E-25/16 BALSARIBSI 3/W%3/IA -FORSHEEI POST F33 F-13Fl-I____ ------S MOVING LAGE SIDE VI- lA 2W NEW021 RAW --LINK ______---I/IAPLY 1/lA MW 3/32ILS/W BAlSASTRINGERS MAPLE GELLCRANK3/3h*lF\IIL3/ 2 BALSAI TAIL LANCINGIII111xlCLI MOIWITA 5/32 MW/ -IWIL ENIABAY1liI1Utl~ mO/1 IIIiriI II111 III I!II lABII IIll DOSSIER/to //Iih1 jIl-4 II 11IrK LJZ 3/B BALSA BA I/RIBALSA IRIBSV STAB ELEV PEW JOINER 7 LAB BALSA 1/2% BALSA 1 HINGEAR BALSA LOCATIONBIBS H / / /7 5/ BALSAI/4BBLAA 22 3/RI MAPLE NOTE FLAP MOVEMENTS 26 ELEVATOR AVIENT C 32 MO AVIATI N STUNTFIRE 60 PAN 62 AREA 670 31 WEIGHT 51 oz ASPECT RATIO 57 DESIGNEC DRAWN BY SCOTT lAIR TR ING BY 3 DEMARCO ALL BIBMYB BKhffD 3/32 VBALSA y F 390 Bolt engine spinner mounts after drilling mounts adding blind nuts Glue Formers FO F95 place mounts aligning FO spinner backplate Remove engine slide /4-in GD aluminum tubes through furmers number former position inches behind FO Add top side sheeting wet FO F17 Add top side stringers Note fin spar actually last former sure extend stringers far enough past F37 reach fin spar fuel tank permanent should added stage Align epoxy fuselage wing No special reinforcement has necessary Continued page 159 August 1983 75 Fuel tank plumbing installed fuselage front end Within engine compartment AG-in webs connect mounts outside skin Stabilizer uses same lightweight construction flaps Elevator tips extend front hinge line aerodynamically reduce amount force required deflect elevator Its thoughtful design product can ART GROSS ENTERPRISES 12516 MAPLEWOOD AVE EDMONDS WA 98020 Spectator safety compromised time during event end 1980 season orig inating group got together discuss fu ture Quarter Scale Formula Pylon Rac ing expand event everyone felt need other versions Formula t aircraft racewithout jeopardizing competitive use Cosmic Wind Great Planes Bridi kit aircraft resolved requiring scale outline drawings least Cosmic Wind kit turned out /4-scale plus 10% 33 foot also apparent would have limit what versions Formula aircraft could used accomplished stating planes com peted against Cosmic Wind 1947 through 1951 acceptable now six outline drawings approved available use event Shoestring Bonzo Rivets standard stabilizer Swee Pea Midget Mustang Loving Special models can have greater dimensions shown plans smaller end 1981 season realized method limiting engine noise out increasing speeds detracting appearance aircraft needed proposal made design muffler fill requirements local machinistmodeler Mr Bill Kucharik WPK Enter prise donated time equipment develop unit Thanks Bill mufflers made available anyone became member Quarter Scale Pylon Racing Association cost no greater standard muffler end season everyone agreed muffler answer Another great boost future de velopment Quarter Scale Formula Pylon Racing added sponsorship 1982 season Kraft Systems Loctite Com pany Great Planes Models 1982 season great QSPRA now official organization complete executive committee com mittee has reviewed refined rules regulations now have racing model de signs easy fly due muffler can flown disturbing anyone club field success new approach mula t Pylon Racing Cleveland area has witnessed should lay ground work similar races throughout coun try Details available contacting Ber nie Oldenburgh 27191 Shirley Avenue Euclid OH 44132 Special thanks order Tony Izzi RAMS Club support semi-final race championship event Additional thanks go Circus-Circus support during 1980 season Any organization looking exciting safe event promote model aviation should consider Quarter Scale Formula Pylon Racing Matcfled Performance System TOP PERFORMANCE K&B ENGINES 16 Airplane4Marine K&B FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FItLtR I&B SUPtR FOXY RESIN K&B SUPtR FOXY THINNER K&B SUPER POSY PRMtB K&B SUPER FOXY PAINT K&B MIXING CUPS Stuntfire/Bair Continued page 75 wing-fuselage joint Add V6 sheet flanges between stringers canopy position wing joint shown plan Build fin stabilizer glue fuselage F37 must cut shown Add flanges fin stabilizer Install pushrod guides Build cooling outlet sheet bottom forward fuselage Reinstall engine carve cowling fit around engine cooling fins should closely shrouded best cooling like cooling duct minimum leakage rest engine com partment compartment ventilated scoop fuselage top point airplane should weigh 15-18 oz engine canopy wing panels covered medium silkspan rest covered 00 silkspan Keep paint minimum Flying airplane designed around ST 60BB engine Provided model lightweight 51 oz will perform best narrow 15-5 prop Stuntfires tend come out nose-heavy add tail weight until turns easily small moment inertia large stabilizer volume produce welldamped turn An operating rudder tab shown plan helpful correcting precession large prop absolutely necessary FrOrn~en Age Aviation muatLD 22 T94 FAI~ Radio Control 34Kit #107 $3995 099 15 Engines 48 Wingspan Dealer ributor Inquiries Please send SOs Phone 17031 273-9593 for Flyline Catalog Flylme Models Inc PO Boo 2136 Fairtos Virginia 22031 USA August 1983 159 recommendSUPER HAND SANDER confidence HOBBIESTSee Hobby Dealer HOBBY DEALER Call Distributor Avuijll4JL4J~ UOEL DlSl$ii9uTOAS coMPA tit~0614 OAK 725217 39fr6200 SUPER JET REGULAR JET New E.Z Use bottles New long TAPERED nozzle gets rid major Instant glue irritantit hardly / ever CIOgXI does pin clears immediately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealerhe has now aSET K OUT THESE NEW LOW PRICES SUPER JETREGULARJET , 02 No3n3 $199 oo No385 1195 , 0 NO394 $255 No300 9295 1 00 No3n2 S4981 o No351 9099 2 o No3nn 99952 0z N03n7 $995