IF YOU thought quiet sport confined making lazy circles thermals pro viding excitement slope updrafts allowing make lazier figureeights should aware ilk sailplane fliers birds have much time flying inverted right side up type flier can usually found standing slope flying aileron equip- ped birdsomething rarely seen thermal contest slow flying floater types ailerons seldom effective F3B FAI competition might change line thinking well talk about later faster slope aerobatic ships resemble pattern ship favorite pet hawk leads up some interesting gents planes ideas scribe met awhile backas pictures probably have al ready hinted Slope aerobatics quite popular Europe especially Scan dinavian countries England runs regular competition program does France side pond efforts have spotty concentrated interests com ing West Coast Understandably after heaviest concentration soaring interests slopes Back pictures holding design aerobatic champion France Gilles Desgrvelles bird caught eye several reasons fuselage molded epoxy unlike anything used seeing kits type over thats similarity ends wings foam covered glass cloth epoxy strong light weight slicker wet grass landing contest foam cores cut hot wire form airfoil laid epoxy form has layered gelcoat epoxy cloth top half form treated same way two forms clamped together wing panel allowed cure seems state art Europe more sailplanes slope Continued page 106 Axel slope aerobatic ship belonging Gilles Desgrvelles France Rudder elevator pivoting wingsl Glass fuselagefoam-andepoxy wings Right Another view showing wing movement Note clean tail assembly Slightly over 2 meters Axel skating maneuver puiaai OWIGUflK actuate wingpnoto snows rigflt crank mounted within fuselage shows main wing support tubing instal lation B pivot point bellcrank C actuating rod bellcrank wing Installation plan appears neat airplane mpe stralgnt-rorwarL istallatlon made opening Rear servo actuates pivoting wing halves August 1979 25 W WI MODEL ACCESSORIES FINE QUALITY ENGINE KITS & CYLINDERS MACHINE GUN KITS LS TS INGS SEND SOt FOR COMPLETE CATALOG DEPr MA 0 181 PAWNEE STREET SAN MARCOS CALIFORNIA S 92069 [F Cuts Coverite gj4& Monokote better T other lade Lasts much CURVED MIC PROTECTSMCOVER &TABLETOPLETS YOU 8LAOE CARRY TRIMIT IN YOUR POCKET cells start drying out sign old age same reduction occurs have dirty connections fractured wires charg ing ioop other hand current will increase bit event have short-circuited cell somewhere pack Transmitters frequently operate long periods two shorted cells because resulting voltage loss doesnt reduce signal output critical level dont measure charging current about notice transmitter has charged frequently personal opinion charger should have reliable ammeter reason dont have cost cheap meters cost real money Since us have charger best alternative buy VOM make up handful adapters like described Thats month Keep letters coming George Myers 70 Froehlich Farm Rd Hicks yule NY 11801 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new Pclass model designed ce mind has potential win toughest COnl-p-eIitrO-tr THE POTENT30 Deluse kit features include Rolled balsa tusela e wing mount dt Completed prop nose plu9 tail plug & rudder Precut wing ribsapar notches job rated balsa strips Highest quality tissue lubed contest rubber Detailed instructions flying tips help yoa wiel CAT NO R2 $695 PP check money Order CHAS WERLE 3620 MORSE AVE N08 SACTO CALIF 95821 RC Soaring/Pruss Continued page 25 types thermal fliers well should noted wing root faced plywood another plywood rib three inches outboard provide support 5mm ID tubing accommodates main support wire three-function gliderrudder elevator moveable wingsnot ailerons moveable wings idea nothing new Bob Boucher ASW couple years back same function did others tried sake doing Some systems straight-forward others looked like innards slot machine French bird simple like things appear simple theyre result refinements Such case Axel Jean Claude Bosquet current French aerobatic champion refined design what see result four years development fuselage although aesthetically sleek appearance has flat sides parallel 1 Fiberglass fin Ipart fuselage 2 1/16 Plywood Stiffen fin expoxy 3 1/16VVireepoxy 4 1/l6VVireepoxv wire makes contact fin 5 1/16 Plywood drill out 3&4 6 Balsa rudder place 3 Ii II ii 4 1 0 5 B flatness ends trailing edge wing meets flatness allows mechanics kept simple airfoil design changed fuselage wing fillet giving away However having fillet fuselage tends weak wing trailing juncture Bosquet cleverly reinforced fuselage point epoxying plywood ring fuselage might seem like simple solution treating vulnerable spot Ive seen some filletless home designs werent beefed up area wing tip used first point touch-down trailing edge knifed fuselage leaving field repair made heart models wing moving ability lies specially molded bell cranks Bosquet developed Again simpleafter see themthey mount fuselage pivot common wire diameter Drive pins stick out fuselage slip wings just about two-thirds back leading edge wings held close fuselage onto wires rubber bands attached screw-in hooks wing roots rubber bands stretch behind main support rod point wing pivot thereby restricting wing movement provide wing fuselage clearance main support tube extends beyond fuselage sides 1/32 inch ends fuselage wing tubes provide al frictionless pivot point Slick As thermal competition fliers real ize reducing drag means time air know real hat sucker thermal will get ten-minute maxes manhole covers its dead air sleekness can mean seconds minutes sleekness means no ugly protuberances wide gaps can cause turbulence Sloppy fits around canopy fuselages can cost time Wide gaps just plain gaps around fuselage wing joints can induce drag point its worse doubling cross-section fuselage point dirtiest areas aerodynamically speaking sailplanes tail area its flying 106 Model Aviation stab have provide gap horizontal stab wire travel plane has vertical fin rudder hinge side MonoKote school V-gap allows rudder movement can cause air funny things equate drag Again Axel handles rudder hinge problem beautifully Its simple ideas falls didnt think department sketch shows tow points pivotthe top rudder bottom short wire epoxied vertical fin wire bent down parallel hinge line second wire long enough offset provide spring action after end epoded fin other end bent up align top wire rudder case Axel has small plywood pieces glued top bottom provide good wear points pins Since talking about glass fuselage vertical fin part fuselage fin acts pocket accept leading edge rudder result nice neatno gap fit slick engineer ing design adds up whisper quiet model As mentioned few moons back column isnt meant act kit review something different comes along itll passed Axel kind model Although didnt get chance see slopes did see fitted tow hook get launched 150-meter tow line As drifted downwind flier Gilles Desgrvelles put through its paces ending four-point slow roll rail time model just whis pered came across field bought Living town called Plainfield know what terrain must like have curb town rises six inches above pavement Maybe someone can talk Dave Thornburg writing article Microwave soaring cookingor study slope effect zero six inches above ground Anyway Axel almost complete being mite over two meters itll easy transport provide slopeIll bring bird Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Helicopters/Chesney continued page 29 release looks like its worth waiting Schluter booth John Gorham Lloyd Wheeler Walt Schoonard plus father R/C helicopters Dieter Schlu ter presented Heliboy familiar also latest configur ation fixed-pitch head Called System 80 Heliboy offers benefit less expensive easily maintained fixed-pitch helicopter conversion ca pability full-blown collective-pitch Heliboy System 80 looks like great pcffa Industries Inc 7080 HOLLYWOOD BLVD LOS ANGELES CA 90028 choice beginner wanting 60-size fixed-pitch machine way Bell 222 fuselage fits System 80 Heliboy too real scale appeal vote goes new Schluter Bolkow BOlOS new four-blade rotor head model displayed two-blade head four-blade head displayed separately four-blade unit believe unique fully articulated head blade free lead lag change pitch angle coning angle believe head alone will available Heliboy mod ifications Speaking Heliboy several im provements earlier model now showing up kits hardened starter shaft thicker main frame plates thicker head side plates name few plus new blade holders allow single pivot point blade attachments single pivot will allow main rotors seek own lead/lag should mean smoother run ning finally modification allow Heliboy go fly-barless will soon kit Walt Schoonard Miniature Air craft Supply showing simple device lock down fly-bar Heliboy Helibaby facilitate checking main rotor blade pitch machines Ill have photos explanation future column T & J Manufacturings booth displayed line helicopter fuselages including replacement fuselages old Schlu ter Cobra Kavan Jet Ranger also have semi-scale Hughes 500 fuselage August 1979 107 TRY THESE OTHER CONTEST QUALITY PRODUCTS FROM PACTRA ____SoIa Film HAND SELECTEDEXCLUSIVE LOW-HEAT PRECISION SANDEDCOVERING FOR SHEETS KSFOAM & BALSA DOWELS SFLYING MODELS TRIANGLES KSflexible ble PLANKSfuel proof tweigbt
Edition: Model Aviation - 1979/08
Page Numbers: 25, 106, 107
IF YOU thought quiet sport confined making lazy circles thermals pro viding excitement slope updrafts allowing make lazier figureeights should aware ilk sailplane fliers birds have much time flying inverted right side up type flier can usually found standing slope flying aileron equip- ped birdsomething rarely seen thermal contest slow flying floater types ailerons seldom effective F3B FAI competition might change line thinking well talk about later faster slope aerobatic ships resemble pattern ship favorite pet hawk leads up some interesting gents planes ideas scribe met awhile backas pictures probably have al ready hinted Slope aerobatics quite popular Europe especially Scan dinavian countries England runs regular competition program does France side pond efforts have spotty concentrated interests com ing West Coast Understandably after heaviest concentration soaring interests slopes Back pictures holding design aerobatic champion France Gilles Desgrvelles bird caught eye several reasons fuselage molded epoxy unlike anything used seeing kits type over thats similarity ends wings foam covered glass cloth epoxy strong light weight slicker wet grass landing contest foam cores cut hot wire form airfoil laid epoxy form has layered gelcoat epoxy cloth top half form treated same way two forms clamped together wing panel allowed cure seems state art Europe more sailplanes slope Continued page 106 Axel slope aerobatic ship belonging Gilles Desgrvelles France Rudder elevator pivoting wingsl Glass fuselagefoam-andepoxy wings Right Another view showing wing movement Note clean tail assembly Slightly over 2 meters Axel skating maneuver puiaai OWIGUflK actuate wingpnoto snows rigflt crank mounted within fuselage shows main wing support tubing instal lation B pivot point bellcrank C actuating rod bellcrank wing Installation plan appears neat airplane mpe stralgnt-rorwarL istallatlon made opening Rear servo actuates pivoting wing halves August 1979 25 W WI MODEL ACCESSORIES FINE QUALITY ENGINE KITS & CYLINDERS MACHINE GUN KITS LS TS INGS SEND SOt FOR COMPLETE CATALOG DEPr MA 0 181 PAWNEE STREET SAN MARCOS CALIFORNIA S 92069 [F Cuts Coverite gj4& Monokote better T other lade Lasts much CURVED MIC PROTECTSMCOVER &TABLETOPLETS YOU 8LAOE CARRY TRIMIT IN YOUR POCKET cells start drying out sign old age same reduction occurs have dirty connections fractured wires charg ing ioop other hand current will increase bit event have short-circuited cell somewhere pack Transmitters frequently operate long periods two shorted cells because resulting voltage loss doesnt reduce signal output critical level dont measure charging current about notice transmitter has charged frequently personal opinion charger should have reliable ammeter reason dont have cost cheap meters cost real money Since us have charger best alternative buy VOM make up handful adapters like described Thats month Keep letters coming George Myers 70 Froehlich Farm Rd Hicks yule NY 11801 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new Pclass model designed ce mind has potential win toughest COnl-p-eIitrO-tr THE POTENT30 Deluse kit features include Rolled balsa tusela e wing mount dt Completed prop nose plu9 tail plug & rudder Precut wing ribsapar notches job rated balsa strips Highest quality tissue lubed contest rubber Detailed instructions flying tips help yoa wiel CAT NO R2 $695 PP check money Order CHAS WERLE 3620 MORSE AVE N08 SACTO CALIF 95821 RC Soaring/Pruss Continued page 25 types thermal fliers well should noted wing root faced plywood another plywood rib three inches outboard provide support 5mm ID tubing accommodates main support wire three-function gliderrudder elevator moveable wingsnot ailerons moveable wings idea nothing new Bob Boucher ASW couple years back same function did others tried sake doing Some systems straight-forward others looked like innards slot machine French bird simple like things appear simple theyre result refinements Such case Axel Jean Claude Bosquet current French aerobatic champion refined design what see result four years development fuselage although aesthetically sleek appearance has flat sides parallel 1 Fiberglass fin Ipart fuselage 2 1/16 Plywood Stiffen fin expoxy 3 1/16VVireepoxy 4 1/l6VVireepoxv wire makes contact fin 5 1/16 Plywood drill out 3&4 6 Balsa rudder place 3 Ii II ii 4 1 0 5 B flatness ends trailing edge wing meets flatness allows mechanics kept simple airfoil design changed fuselage wing fillet giving away However having fillet fuselage tends weak wing trailing juncture Bosquet cleverly reinforced fuselage point epoxying plywood ring fuselage might seem like simple solution treating vulnerable spot Ive seen some filletless home designs werent beefed up area wing tip used first point touch-down trailing edge knifed fuselage leaving field repair made heart models wing moving ability lies specially molded bell cranks Bosquet developed Again simpleafter see themthey mount fuselage pivot common wire diameter Drive pins stick out fuselage slip wings just about two-thirds back leading edge wings held close fuselage onto wires rubber bands attached screw-in hooks wing roots rubber bands stretch behind main support rod point wing pivot thereby restricting wing movement provide wing fuselage clearance main support tube extends beyond fuselage sides 1/32 inch ends fuselage wing tubes provide al frictionless pivot point Slick As thermal competition fliers real ize reducing drag means time air know real hat sucker thermal will get ten-minute maxes manhole covers its dead air sleekness can mean seconds minutes sleekness means no ugly protuberances wide gaps can cause turbulence Sloppy fits around canopy fuselages can cost time Wide gaps just plain gaps around fuselage wing joints can induce drag point its worse doubling cross-section fuselage point dirtiest areas aerodynamically speaking sailplanes tail area its flying 106 Model Aviation stab have provide gap horizontal stab wire travel plane has vertical fin rudder hinge side MonoKote school V-gap allows rudder movement can cause air funny things equate drag Again Axel handles rudder hinge problem beautifully Its simple ideas falls didnt think department sketch shows tow points pivotthe top rudder bottom short wire epoxied vertical fin wire bent down parallel hinge line second wire long enough offset provide spring action after end epoded fin other end bent up align top wire rudder case Axel has small plywood pieces glued top bottom provide good wear points pins Since talking about glass fuselage vertical fin part fuselage fin acts pocket accept leading edge rudder result nice neatno gap fit slick engineer ing design adds up whisper quiet model As mentioned few moons back column isnt meant act kit review something different comes along itll passed Axel kind model Although didnt get chance see slopes did see fitted tow hook get launched 150-meter tow line As drifted downwind flier Gilles Desgrvelles put through its paces ending four-point slow roll rail time model just whis pered came across field bought Living town called Plainfield know what terrain must like have curb town rises six inches above pavement Maybe someone can talk Dave Thornburg writing article Microwave soaring cookingor study slope effect zero six inches above ground Anyway Axel almost complete being mite over two meters itll easy transport provide slopeIll bring bird Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Helicopters/Chesney continued page 29 release looks like its worth waiting Schluter booth John Gorham Lloyd Wheeler Walt Schoonard plus father R/C helicopters Dieter Schlu ter presented Heliboy familiar also latest configur ation fixed-pitch head Called System 80 Heliboy offers benefit less expensive easily maintained fixed-pitch helicopter conversion ca pability full-blown collective-pitch Heliboy System 80 looks like great pcffa Industries Inc 7080 HOLLYWOOD BLVD LOS ANGELES CA 90028 choice beginner wanting 60-size fixed-pitch machine way Bell 222 fuselage fits System 80 Heliboy too real scale appeal vote goes new Schluter Bolkow BOlOS new four-blade rotor head model displayed two-blade head four-blade head displayed separately four-blade unit believe unique fully articulated head blade free lead lag change pitch angle coning angle believe head alone will available Heliboy mod ifications Speaking Heliboy several im provements earlier model now showing up kits hardened starter shaft thicker main frame plates thicker head side plates name few plus new blade holders allow single pivot point blade attachments single pivot will allow main rotors seek own lead/lag should mean smoother run ning finally modification allow Heliboy go fly-barless will soon kit Walt Schoonard Miniature Air craft Supply showing simple device lock down fly-bar Heliboy Helibaby facilitate checking main rotor blade pitch machines Ill have photos explanation future column T & J Manufacturings booth displayed line helicopter fuselages including replacement fuselages old Schlu ter Cobra Kavan Jet Ranger also have semi-scale Hughes 500 fuselage August 1979 107 TRY THESE OTHER CONTEST QUALITY PRODUCTS FROM PACTRA ____SoIa Film HAND SELECTEDEXCLUSIVE LOW-HEAT PRECISION SANDEDCOVERING FOR SHEETS KSFOAM & BALSA DOWELS SFLYING MODELS TRIANGLES KSflexible ble PLANKSfuel proof tweigbt
Edition: Model Aviation - 1979/08
Page Numbers: 25, 106, 107
IF YOU thought quiet sport confined making lazy circles thermals pro viding excitement slope updrafts allowing make lazier figureeights should aware ilk sailplane fliers birds have much time flying inverted right side up type flier can usually found standing slope flying aileron equip- ped birdsomething rarely seen thermal contest slow flying floater types ailerons seldom effective F3B FAI competition might change line thinking well talk about later faster slope aerobatic ships resemble pattern ship favorite pet hawk leads up some interesting gents planes ideas scribe met awhile backas pictures probably have al ready hinted Slope aerobatics quite popular Europe especially Scan dinavian countries England runs regular competition program does France side pond efforts have spotty concentrated interests com ing West Coast Understandably after heaviest concentration soaring interests slopes Back pictures holding design aerobatic champion France Gilles Desgrvelles bird caught eye several reasons fuselage molded epoxy unlike anything used seeing kits type over thats similarity ends wings foam covered glass cloth epoxy strong light weight slicker wet grass landing contest foam cores cut hot wire form airfoil laid epoxy form has layered gelcoat epoxy cloth top half form treated same way two forms clamped together wing panel allowed cure seems state art Europe more sailplanes slope Continued page 106 Axel slope aerobatic ship belonging Gilles Desgrvelles France Rudder elevator pivoting wingsl Glass fuselagefoam-andepoxy wings Right Another view showing wing movement Note clean tail assembly Slightly over 2 meters Axel skating maneuver puiaai OWIGUflK actuate wingpnoto snows rigflt crank mounted within fuselage shows main wing support tubing instal lation B pivot point bellcrank C actuating rod bellcrank wing Installation plan appears neat airplane mpe stralgnt-rorwarL istallatlon made opening Rear servo actuates pivoting wing halves August 1979 25 W WI MODEL ACCESSORIES FINE QUALITY ENGINE KITS & CYLINDERS MACHINE GUN KITS LS TS INGS SEND SOt FOR COMPLETE CATALOG DEPr MA 0 181 PAWNEE STREET SAN MARCOS CALIFORNIA S 92069 [F Cuts Coverite gj4& Monokote better T other lade Lasts much CURVED MIC PROTECTSMCOVER &TABLETOPLETS YOU 8LAOE CARRY TRIMIT IN YOUR POCKET cells start drying out sign old age same reduction occurs have dirty connections fractured wires charg ing ioop other hand current will increase bit event have short-circuited cell somewhere pack Transmitters frequently operate long periods two shorted cells because resulting voltage loss doesnt reduce signal output critical level dont measure charging current about notice transmitter has charged frequently personal opinion charger should have reliable ammeter reason dont have cost cheap meters cost real money Since us have charger best alternative buy VOM make up handful adapters like described Thats month Keep letters coming George Myers 70 Froehlich Farm Rd Hicks yule NY 11801 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new Pclass model designed ce mind has potential win toughest COnl-p-eIitrO-tr THE POTENT30 Deluse kit features include Rolled balsa tusela e wing mount dt Completed prop nose plu9 tail plug & rudder Precut wing ribsapar notches job rated balsa strips Highest quality tissue lubed contest rubber Detailed instructions flying tips help yoa wiel CAT NO R2 $695 PP check money Order CHAS WERLE 3620 MORSE AVE N08 SACTO CALIF 95821 RC Soaring/Pruss Continued page 25 types thermal fliers well should noted wing root faced plywood another plywood rib three inches outboard provide support 5mm ID tubing accommodates main support wire three-function gliderrudder elevator moveable wingsnot ailerons moveable wings idea nothing new Bob Boucher ASW couple years back same function did others tried sake doing Some systems straight-forward others looked like innards slot machine French bird simple like things appear simple theyre result refinements Such case Axel Jean Claude Bosquet current French aerobatic champion refined design what see result four years development fuselage although aesthetically sleek appearance has flat sides parallel 1 Fiberglass fin Ipart fuselage 2 1/16 Plywood Stiffen fin expoxy 3 1/16VVireepoxy 4 1/l6VVireepoxv wire makes contact fin 5 1/16 Plywood drill out 3&4 6 Balsa rudder place 3 Ii II ii 4 1 0 5 B flatness ends trailing edge wing meets flatness allows mechanics kept simple airfoil design changed fuselage wing fillet giving away However having fillet fuselage tends weak wing trailing juncture Bosquet cleverly reinforced fuselage point epoxying plywood ring fuselage might seem like simple solution treating vulnerable spot Ive seen some filletless home designs werent beefed up area wing tip used first point touch-down trailing edge knifed fuselage leaving field repair made heart models wing moving ability lies specially molded bell cranks Bosquet developed Again simpleafter see themthey mount fuselage pivot common wire diameter Drive pins stick out fuselage slip wings just about two-thirds back leading edge wings held close fuselage onto wires rubber bands attached screw-in hooks wing roots rubber bands stretch behind main support rod point wing pivot thereby restricting wing movement provide wing fuselage clearance main support tube extends beyond fuselage sides 1/32 inch ends fuselage wing tubes provide al frictionless pivot point Slick As thermal competition fliers real ize reducing drag means time air know real hat sucker thermal will get ten-minute maxes manhole covers its dead air sleekness can mean seconds minutes sleekness means no ugly protuberances wide gaps can cause turbulence Sloppy fits around canopy fuselages can cost time Wide gaps just plain gaps around fuselage wing joints can induce drag point its worse doubling cross-section fuselage point dirtiest areas aerodynamically speaking sailplanes tail area its flying 106 Model Aviation stab have provide gap horizontal stab wire travel plane has vertical fin rudder hinge side MonoKote school V-gap allows rudder movement can cause air funny things equate drag Again Axel handles rudder hinge problem beautifully Its simple ideas falls didnt think department sketch shows tow points pivotthe top rudder bottom short wire epoxied vertical fin wire bent down parallel hinge line second wire long enough offset provide spring action after end epoded fin other end bent up align top wire rudder case Axel has small plywood pieces glued top bottom provide good wear points pins Since talking about glass fuselage vertical fin part fuselage fin acts pocket accept leading edge rudder result nice neatno gap fit slick engineer ing design adds up whisper quiet model As mentioned few moons back column isnt meant act kit review something different comes along itll passed Axel kind model Although didnt get chance see slopes did see fitted tow hook get launched 150-meter tow line As drifted downwind flier Gilles Desgrvelles put through its paces ending four-point slow roll rail time model just whis pered came across field bought Living town called Plainfield know what terrain must like have curb town rises six inches above pavement Maybe someone can talk Dave Thornburg writing article Microwave soaring cookingor study slope effect zero six inches above ground Anyway Axel almost complete being mite over two meters itll easy transport provide slopeIll bring bird Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Helicopters/Chesney continued page 29 release looks like its worth waiting Schluter booth John Gorham Lloyd Wheeler Walt Schoonard plus father R/C helicopters Dieter Schlu ter presented Heliboy familiar also latest configur ation fixed-pitch head Called System 80 Heliboy offers benefit less expensive easily maintained fixed-pitch helicopter conversion ca pability full-blown collective-pitch Heliboy System 80 looks like great pcffa Industries Inc 7080 HOLLYWOOD BLVD LOS ANGELES CA 90028 choice beginner wanting 60-size fixed-pitch machine way Bell 222 fuselage fits System 80 Heliboy too real scale appeal vote goes new Schluter Bolkow BOlOS new four-blade rotor head model displayed two-blade head four-blade head displayed separately four-blade unit believe unique fully articulated head blade free lead lag change pitch angle coning angle believe head alone will available Heliboy mod ifications Speaking Heliboy several im provements earlier model now showing up kits hardened starter shaft thicker main frame plates thicker head side plates name few plus new blade holders allow single pivot point blade attachments single pivot will allow main rotors seek own lead/lag should mean smoother run ning finally modification allow Heliboy go fly-barless will soon kit Walt Schoonard Miniature Air craft Supply showing simple device lock down fly-bar Heliboy Helibaby facilitate checking main rotor blade pitch machines Ill have photos explanation future column T & J Manufacturings booth displayed line helicopter fuselages including replacement fuselages old Schlu ter Cobra Kavan Jet Ranger also have semi-scale Hughes 500 fuselage August 1979 107 TRY THESE OTHER CONTEST QUALITY PRODUCTS FROM PACTRA ____SoIa Film HAND SELECTEDEXCLUSIVE LOW-HEAT PRECISION SANDEDCOVERING FOR SHEETS KSFOAM & BALSA DOWELS SFLYING MODELS TRIANGLES KSflexible ble PLANKSfuel proof tweigbt