Radio Control GIANT SCALE Bob Beckman NEW KRAFT GOODIES reason other has long time since got new radio right off shelf year ago built Silver Seven transmitter thats quite same thing Anyway finally got Tom ahawks finished wanted get back work Sparrowhawk realized thatthanks Tomahawks Stinson Voyager built 198 II fresh out suitable radios make long story short decided go new Kraft systems thought might interested iibpressions What wound up KP-7C MKIII KPS-24 servos additional heavy-duty battery Any new toy fascinating particularly struck amount quality instructions other literature came system lot information new new RC sure would valuable last time bought new radio instructions came minimal say least particularly impressed stallation guide book included couldnt pretend cover hints kinks about installing radios airplanes did cover basics would invaluable newcomer booklet covering radio itself quite comprehensive very well written Any experi enced RCer could have picked up system used material point complete tyro has got good chance succeeding kind help Up now have using 20H servos Giant Scale aircraft planned go same way Sparrowhawk decided instead try new KPS-24 bit smaller lighter 20H about 20% less output power rated 45 oz-in torque should enough like dual ball bearings splined output shaft hope come out some heavy-duty servo arms will fit splined shaft Speaking heavy-duty servo arms Ive using 20H servos really like did discover minor problem however arms 2OHs held short 1-72 machine screws heavy-duty arms thicker original output fittings few threads engage run screw down seems secure rela Dave Richardson exquisite Waco UPF-7 Bob loves itl Dave taxis onto field L STARS rally Olean NY looks just good air R does ground 48 Model Aviation Bob Campbells again time its 20-ft-long Lockheed C-130 Hercules just shows bones fuselage works fastplans have Toledo Ron Mangums Super Sunray unusualbut quite capabledesign Plans reviewed time tively light bang control surface like nosing-over landing course ever can pop arm off output shaft put slightly longer screws solved prob lem Now could just solve nosing-over problem Another new item Kraft got recently new 24-oz fuel tank materials used compatible gasoline diesel fuels well glow fuel nice size Giant Scale Quadra will run about half hour much fuel larger engines will get about 15-minute flights Another Herculean effort Bob Campbell did fabulous job building flying twinQuadra-powered Grumman Tigercat encore came up famous B-29 have stunned that never occurred to think about what anything would encore Superfort Never let said Bob ever lets balsa dust shop lie undisturbed week latest C-130 Hercules wingspan20 ft fuselage14 ft long 2 ft diameter four engines dont know what kind yet weightISO 160 lb picture taken December 4 1982 December 17 fuselage finished cant write fast much less build fast Bob expects have bird finished February first flights early spring Con finued page 127 rThe Ultimate Ducted Fan Performance Package LJrgJetAvailable Now same ducted fan specialists revolutionized hobby patented Byro-Jet now offering complete high performance package ever Byron Originals now importing new Rossi 81 Italy designed especially Byro-Jet Rossi 81 RC RV features rear valve rear exhaust plus special over-sized cooling head optimum pet ormance precision engineered engine has exceptionally good idle easy carburetor adjustment well Combining state-of-the-art engine Byro-Jet tuned pipe produces ducted fan propulsion system easily out performs anything else world market 5% nitro fuel simple gravity feed fuel system winning combination generates full 13 thrust 19600 RPMs thats 24 long thrust tube 51h outlet simulating actual aircraft install ation 1 An introductory package offer available now Byron Originals unbelievable factory direct price $28550 plus $300 shipping save S50l Packageincludes Rossi 81 complete Byro-Jet Fan Unit custom tuned pipe header pipe required fasteners Engine header pipe also available separately $23995 plus $250 shipping ORDER performance package today transform Byron Originals scratch-built jet ultimate2ZT BYRON performance machineZII5 ORIGINALSr April 1983 49 Bob favorably impressed two new items Kraft L new KPS-24 servo has splined output shaft dual ball-bearings hous ings show clearly R 24-oz-capacity fuel tank nice size engines 2-3 ci range plastic material will withstand either gasoline glow fuel ROSSI Si SPEC wt 1 lb l2oz Horse Power 45 @22000RPM ABC Reer Valve Rear Exhaust BYRO-JET SPEC wt 1 1 Ounces Shroud Die OD.7/ 10-S Overell length including engine mount 6/ Materiel Glass-filled nylon Byron Originals PO Box 279 Ida Grove IA 51445 Ph 712-364-3165 Enon OH Alden Shipp WB9WAJ Quincy IL Dan Pruss 131 E Penningion Ln Plainfield IL 60544 RC Giant Scale/Beckman Continued page 49 didnt say assume will have Toledo Hobbypoxy scale colors Last June 1 got letter Bob Pettit Pettit Paint Company Inc people make Hobbypoxy wrote tell about project under way provide paint-mixing formulas help Scale modelers re produce accurate color schemes Since museumscale accuracy prime concern Giant Scale modeling other items kept pushing down list things tell about program has reported detail Scale columns various magazines will just outline What boils down Hobbypoxy has researched colors used various aircraft lets say example WW II RAF colors labs have determined exact mixture standard Hobbypoxy colors needed match show works formula Dark Green colors used upper surfaces Hurricanes Spitfires during Battle Britain 6 parts 1166 Dark Red 2 parts H33 Stinson Green part 1149 Cub Yellow part H81 Black part 1110 White Mix together mix Flat Hardener thing sure would never have thought produce shade green starting lots dark red month get another note two three color formulas So far have WW Ilor latercoiors program continues wont long before almost color need will have figured out assume writing Hobbypoxy will let find out have colors need will probably put list future Im hoping get work out colors need Sparrowhawk Super SunRay plans Super SunRay semi-scale model patterned after small biplane racer called Sorceress original Ron Mangums model incorporate several unusual features including reverse stagger inverted gull lower wing no struts kind upper wing mounted shoulder position fuselage inverted gull dihedral lower wing provides proper wing gap same time allows use very short landing gear legs unusual quite practi cal design upper wingspan 6 ft 4 14-in chord lower wing somewhat smaller fuselage over 6-ft long 5-in wide 10Y2-in deep Rons original powered Quadra flies very well dont know what weighs plans 1 would estimate 18 20 lb plans drawn Calvin Clark con sist two sheets approximately 3 ft 7 ft first impression didnt have much detail two reasons construc tion really quite simple Ron Calvin must have assumed very experienced modelers would using plans examle dowels shown leading edge wing anchors trailing edges simply note about using nylon screws hold wing no detail shown no detail engine radio installation things wont bother experienced builder could Nor~ AVIONIUS J&AcH INC ACCUETACH 1 LCITALqMoMITOR DIR~TER GE TACHof CHARto get G& Determ ne state d Makes t possIble Select idle thIiJof yoUf N9 accuratecharge5 wsafely J5 Jtd adjUStmebatter~pack nflharg scale r 100 cycle Ch~bat watChI~~ig nals dUa1ox x out bi1t pfeCI terY combo5ffl charge 5jQfl electronics ORDER YOURS NOW 79id Send check money order no 000s NorCal AVIONICS Inc PO Box 70956 yvale CA 94086California residents add 6% tax Add $300 shipping outside continental USADealer inquiries invited real stumbling blocks beginner construction really quite straightforward simple using common sport RC techniques Except spars hardwood plywood balsa lots Some substitutions cheaper materials could save lot money example -in sheet balsa fuselage sides could replaced door-skin ply backed up -in sq spruce longerons balsa formers ribs could cut foam core board dont mean criticism design just hints accomplish same thing having mortgage farm Super SunRay uncommon design very good flier wont see sitting next field plans available Ron Mangum PO Box 8244 Greensboro NC 27410 Waco UPF-7 plans UPF-7 opencockpit biplane similar contemporary PT-17 have soft spot heart aircraft because first open biplane ever flew got private ticket late Forties small field near Portsmouth VA field like era now covered houses Anyway owner field addition Aeronca Champs used training two airplanes really intrigued clipped-wing Monocoupe restoring other operational UPF-7 owner really wrapped up Monocoupe built display model complete planned color scheme traded model him check-out flying time Waco time effort well spent part Dave Richardsons UPF-7 quarter-scale plans show Quadra mount spans 86-in 733/4-in long estimated 23 lb shown plans just within comfortable capabilities Quadra first saw Daves prototype fly STARS rally 1980 Kioritz slightly larger engine allows little margin enor puts bit snap maneuvers Almost engines under 4 ci will fit nicely radial cowl plans consist three sheets approximately 3 ft 5 ft plus smaller sheet landing gear details addition well-written four-page instruction booklet questions came mind looking plans answered time finished reading booklet available Dave Rich ardson Star Route Deposit NY 13754 50cc Quadra other day got slightly latebut very welcomeChristmas present Im writing early January UPS dropped off brand new 50cc Quadra Its first ones off production line looks great havent chance run yet will soon results will next Big Bangers article Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 52 fiters have hard time getting engine last contest let alone whole season FAI engine possible have engine last whole Racing season started Racing glow plugs 29 39 Now some over $2 Formula use plug per flight lucky some dont last whole flight FAI competition could possibly use same plug whole weekend April 1983 127
Edition: Model Aviation - 1983/04
Page Numbers: 48, 49, 127
Radio Control GIANT SCALE Bob Beckman NEW KRAFT GOODIES reason other has long time since got new radio right off shelf year ago built Silver Seven transmitter thats quite same thing Anyway finally got Tom ahawks finished wanted get back work Sparrowhawk realized thatthanks Tomahawks Stinson Voyager built 198 II fresh out suitable radios make long story short decided go new Kraft systems thought might interested iibpressions What wound up KP-7C MKIII KPS-24 servos additional heavy-duty battery Any new toy fascinating particularly struck amount quality instructions other literature came system lot information new new RC sure would valuable last time bought new radio instructions came minimal say least particularly impressed stallation guide book included couldnt pretend cover hints kinks about installing radios airplanes did cover basics would invaluable newcomer booklet covering radio itself quite comprehensive very well written Any experi enced RCer could have picked up system used material point complete tyro has got good chance succeeding kind help Up now have using 20H servos Giant Scale aircraft planned go same way Sparrowhawk decided instead try new KPS-24 bit smaller lighter 20H about 20% less output power rated 45 oz-in torque should enough like dual ball bearings splined output shaft hope come out some heavy-duty servo arms will fit splined shaft Speaking heavy-duty servo arms Ive using 20H servos really like did discover minor problem however arms 2OHs held short 1-72 machine screws heavy-duty arms thicker original output fittings few threads engage run screw down seems secure rela Dave Richardson exquisite Waco UPF-7 Bob loves itl Dave taxis onto field L STARS rally Olean NY looks just good air R does ground 48 Model Aviation Bob Campbells again time its 20-ft-long Lockheed C-130 Hercules just shows bones fuselage works fastplans have Toledo Ron Mangums Super Sunray unusualbut quite capabledesign Plans reviewed time tively light bang control surface like nosing-over landing course ever can pop arm off output shaft put slightly longer screws solved prob lem Now could just solve nosing-over problem Another new item Kraft got recently new 24-oz fuel tank materials used compatible gasoline diesel fuels well glow fuel nice size Giant Scale Quadra will run about half hour much fuel larger engines will get about 15-minute flights Another Herculean effort Bob Campbell did fabulous job building flying twinQuadra-powered Grumman Tigercat encore came up famous B-29 have stunned that never occurred to think about what anything would encore Superfort Never let said Bob ever lets balsa dust shop lie undisturbed week latest C-130 Hercules wingspan20 ft fuselage14 ft long 2 ft diameter four engines dont know what kind yet weightISO 160 lb picture taken December 4 1982 December 17 fuselage finished cant write fast much less build fast Bob expects have bird finished February first flights early spring Con finued page 127 rThe Ultimate Ducted Fan Performance Package LJrgJetAvailable Now same ducted fan specialists revolutionized hobby patented Byro-Jet now offering complete high performance package ever Byron Originals now importing new Rossi 81 Italy designed especially Byro-Jet Rossi 81 RC RV features rear valve rear exhaust plus special over-sized cooling head optimum pet ormance precision engineered engine has exceptionally good idle easy carburetor adjustment well Combining state-of-the-art engine Byro-Jet tuned pipe produces ducted fan propulsion system easily out performs anything else world market 5% nitro fuel simple gravity feed fuel system winning combination generates full 13 thrust 19600 RPMs thats 24 long thrust tube 51h outlet simulating actual aircraft install ation 1 An introductory package offer available now Byron Originals unbelievable factory direct price $28550 plus $300 shipping save S50l Packageincludes Rossi 81 complete Byro-Jet Fan Unit custom tuned pipe header pipe required fasteners Engine header pipe also available separately $23995 plus $250 shipping ORDER performance package today transform Byron Originals scratch-built jet ultimate2ZT BYRON performance machineZII5 ORIGINALSr April 1983 49 Bob favorably impressed two new items Kraft L new KPS-24 servo has splined output shaft dual ball-bearings hous ings show clearly R 24-oz-capacity fuel tank nice size engines 2-3 ci range plastic material will withstand either gasoline glow fuel ROSSI Si SPEC wt 1 lb l2oz Horse Power 45 @22000RPM ABC Reer Valve Rear Exhaust BYRO-JET SPEC wt 1 1 Ounces Shroud Die OD.7/ 10-S Overell length including engine mount 6/ Materiel Glass-filled nylon Byron Originals PO Box 279 Ida Grove IA 51445 Ph 712-364-3165 Enon OH Alden Shipp WB9WAJ Quincy IL Dan Pruss 131 E Penningion Ln Plainfield IL 60544 RC Giant Scale/Beckman Continued page 49 didnt say assume will have Toledo Hobbypoxy scale colors Last June 1 got letter Bob Pettit Pettit Paint Company Inc people make Hobbypoxy wrote tell about project under way provide paint-mixing formulas help Scale modelers re produce accurate color schemes Since museumscale accuracy prime concern Giant Scale modeling other items kept pushing down list things tell about program has reported detail Scale columns various magazines will just outline What boils down Hobbypoxy has researched colors used various aircraft lets say example WW II RAF colors labs have determined exact mixture standard Hobbypoxy colors needed match show works formula Dark Green colors used upper surfaces Hurricanes Spitfires during Battle Britain 6 parts 1166 Dark Red 2 parts H33 Stinson Green part 1149 Cub Yellow part H81 Black part 1110 White Mix together mix Flat Hardener thing sure would never have thought produce shade green starting lots dark red month get another note two three color formulas So far have WW Ilor latercoiors program continues wont long before almost color need will have figured out assume writing Hobbypoxy will let find out have colors need will probably put list future Im hoping get work out colors need Sparrowhawk Super SunRay plans Super SunRay semi-scale model patterned after small biplane racer called Sorceress original Ron Mangums model incorporate several unusual features including reverse stagger inverted gull lower wing no struts kind upper wing mounted shoulder position fuselage inverted gull dihedral lower wing provides proper wing gap same time allows use very short landing gear legs unusual quite practi cal design upper wingspan 6 ft 4 14-in chord lower wing somewhat smaller fuselage over 6-ft long 5-in wide 10Y2-in deep Rons original powered Quadra flies very well dont know what weighs plans 1 would estimate 18 20 lb plans drawn Calvin Clark con sist two sheets approximately 3 ft 7 ft first impression didnt have much detail two reasons construc tion really quite simple Ron Calvin must have assumed very experienced modelers would using plans examle dowels shown leading edge wing anchors trailing edges simply note about using nylon screws hold wing no detail shown no detail engine radio installation things wont bother experienced builder could Nor~ AVIONIUS J&AcH INC ACCUETACH 1 LCITALqMoMITOR DIR~TER GE TACHof CHARto get G& Determ ne state d Makes t possIble Select idle thIiJof yoUf N9 accuratecharge5 wsafely J5 Jtd adjUStmebatter~pack nflharg scale r 100 cycle Ch~bat watChI~~ig nals dUa1ox x out bi1t pfeCI terY combo5ffl charge 5jQfl electronics ORDER YOURS NOW 79id Send check money order no 000s NorCal AVIONICS Inc PO Box 70956 yvale CA 94086California residents add 6% tax Add $300 shipping outside continental USADealer inquiries invited real stumbling blocks beginner construction really quite straightforward simple using common sport RC techniques Except spars hardwood plywood balsa lots Some substitutions cheaper materials could save lot money example -in sheet balsa fuselage sides could replaced door-skin ply backed up -in sq spruce longerons balsa formers ribs could cut foam core board dont mean criticism design just hints accomplish same thing having mortgage farm Super SunRay uncommon design very good flier wont see sitting next field plans available Ron Mangum PO Box 8244 Greensboro NC 27410 Waco UPF-7 plans UPF-7 opencockpit biplane similar contemporary PT-17 have soft spot heart aircraft because first open biplane ever flew got private ticket late Forties small field near Portsmouth VA field like era now covered houses Anyway owner field addition Aeronca Champs used training two airplanes really intrigued clipped-wing Monocoupe restoring other operational UPF-7 owner really wrapped up Monocoupe built display model complete planned color scheme traded model him check-out flying time Waco time effort well spent part Dave Richardsons UPF-7 quarter-scale plans show Quadra mount spans 86-in 733/4-in long estimated 23 lb shown plans just within comfortable capabilities Quadra first saw Daves prototype fly STARS rally 1980 Kioritz slightly larger engine allows little margin enor puts bit snap maneuvers Almost engines under 4 ci will fit nicely radial cowl plans consist three sheets approximately 3 ft 5 ft plus smaller sheet landing gear details addition well-written four-page instruction booklet questions came mind looking plans answered time finished reading booklet available Dave Rich ardson Star Route Deposit NY 13754 50cc Quadra other day got slightly latebut very welcomeChristmas present Im writing early January UPS dropped off brand new 50cc Quadra Its first ones off production line looks great havent chance run yet will soon results will next Big Bangers article Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 52 fiters have hard time getting engine last contest let alone whole season FAI engine possible have engine last whole Racing season started Racing glow plugs 29 39 Now some over $2 Formula use plug per flight lucky some dont last whole flight FAI competition could possibly use same plug whole weekend April 1983 127
Edition: Model Aviation - 1983/04
Page Numbers: 48, 49, 127
Radio Control GIANT SCALE Bob Beckman NEW KRAFT GOODIES reason other has long time since got new radio right off shelf year ago built Silver Seven transmitter thats quite same thing Anyway finally got Tom ahawks finished wanted get back work Sparrowhawk realized thatthanks Tomahawks Stinson Voyager built 198 II fresh out suitable radios make long story short decided go new Kraft systems thought might interested iibpressions What wound up KP-7C MKIII KPS-24 servos additional heavy-duty battery Any new toy fascinating particularly struck amount quality instructions other literature came system lot information new new RC sure would valuable last time bought new radio instructions came minimal say least particularly impressed stallation guide book included couldnt pretend cover hints kinks about installing radios airplanes did cover basics would invaluable newcomer booklet covering radio itself quite comprehensive very well written Any experi enced RCer could have picked up system used material point complete tyro has got good chance succeeding kind help Up now have using 20H servos Giant Scale aircraft planned go same way Sparrowhawk decided instead try new KPS-24 bit smaller lighter 20H about 20% less output power rated 45 oz-in torque should enough like dual ball bearings splined output shaft hope come out some heavy-duty servo arms will fit splined shaft Speaking heavy-duty servo arms Ive using 20H servos really like did discover minor problem however arms 2OHs held short 1-72 machine screws heavy-duty arms thicker original output fittings few threads engage run screw down seems secure rela Dave Richardson exquisite Waco UPF-7 Bob loves itl Dave taxis onto field L STARS rally Olean NY looks just good air R does ground 48 Model Aviation Bob Campbells again time its 20-ft-long Lockheed C-130 Hercules just shows bones fuselage works fastplans have Toledo Ron Mangums Super Sunray unusualbut quite capabledesign Plans reviewed time tively light bang control surface like nosing-over landing course ever can pop arm off output shaft put slightly longer screws solved prob lem Now could just solve nosing-over problem Another new item Kraft got recently new 24-oz fuel tank materials used compatible gasoline diesel fuels well glow fuel nice size Giant Scale Quadra will run about half hour much fuel larger engines will get about 15-minute flights Another Herculean effort Bob Campbell did fabulous job building flying twinQuadra-powered Grumman Tigercat encore came up famous B-29 have stunned that never occurred to think about what anything would encore Superfort Never let said Bob ever lets balsa dust shop lie undisturbed week latest C-130 Hercules wingspan20 ft fuselage14 ft long 2 ft diameter four engines dont know what kind yet weightISO 160 lb picture taken December 4 1982 December 17 fuselage finished cant write fast much less build fast Bob expects have bird finished February first flights early spring Con finued page 127 rThe Ultimate Ducted Fan Performance Package LJrgJetAvailable Now same ducted fan specialists revolutionized hobby patented Byro-Jet now offering complete high performance package ever Byron Originals now importing new Rossi 81 Italy designed especially Byro-Jet Rossi 81 RC RV features rear valve rear exhaust plus special over-sized cooling head optimum pet ormance precision engineered engine has exceptionally good idle easy carburetor adjustment well Combining state-of-the-art engine Byro-Jet tuned pipe produces ducted fan propulsion system easily out performs anything else world market 5% nitro fuel simple gravity feed fuel system winning combination generates full 13 thrust 19600 RPMs thats 24 long thrust tube 51h outlet simulating actual aircraft install ation 1 An introductory package offer available now Byron Originals unbelievable factory direct price $28550 plus $300 shipping save S50l Packageincludes Rossi 81 complete Byro-Jet Fan Unit custom tuned pipe header pipe required fasteners Engine header pipe also available separately $23995 plus $250 shipping ORDER performance package today transform Byron Originals scratch-built jet ultimate2ZT BYRON performance machineZII5 ORIGINALSr April 1983 49 Bob favorably impressed two new items Kraft L new KPS-24 servo has splined output shaft dual ball-bearings hous ings show clearly R 24-oz-capacity fuel tank nice size engines 2-3 ci range plastic material will withstand either gasoline glow fuel ROSSI Si SPEC wt 1 lb l2oz Horse Power 45 @22000RPM ABC Reer Valve Rear Exhaust BYRO-JET SPEC wt 1 1 Ounces Shroud Die OD.7/ 10-S Overell length including engine mount 6/ Materiel Glass-filled nylon Byron Originals PO Box 279 Ida Grove IA 51445 Ph 712-364-3165 Enon OH Alden Shipp WB9WAJ Quincy IL Dan Pruss 131 E Penningion Ln Plainfield IL 60544 RC Giant Scale/Beckman Continued page 49 didnt say assume will have Toledo Hobbypoxy scale colors Last June 1 got letter Bob Pettit Pettit Paint Company Inc people make Hobbypoxy wrote tell about project under way provide paint-mixing formulas help Scale modelers re produce accurate color schemes Since museumscale accuracy prime concern Giant Scale modeling other items kept pushing down list things tell about program has reported detail Scale columns various magazines will just outline What boils down Hobbypoxy has researched colors used various aircraft lets say example WW II RAF colors labs have determined exact mixture standard Hobbypoxy colors needed match show works formula Dark Green colors used upper surfaces Hurricanes Spitfires during Battle Britain 6 parts 1166 Dark Red 2 parts H33 Stinson Green part 1149 Cub Yellow part H81 Black part 1110 White Mix together mix Flat Hardener thing sure would never have thought produce shade green starting lots dark red month get another note two three color formulas So far have WW Ilor latercoiors program continues wont long before almost color need will have figured out assume writing Hobbypoxy will let find out have colors need will probably put list future Im hoping get work out colors need Sparrowhawk Super SunRay plans Super SunRay semi-scale model patterned after small biplane racer called Sorceress original Ron Mangums model incorporate several unusual features including reverse stagger inverted gull lower wing no struts kind upper wing mounted shoulder position fuselage inverted gull dihedral lower wing provides proper wing gap same time allows use very short landing gear legs unusual quite practi cal design upper wingspan 6 ft 4 14-in chord lower wing somewhat smaller fuselage over 6-ft long 5-in wide 10Y2-in deep Rons original powered Quadra flies very well dont know what weighs plans 1 would estimate 18 20 lb plans drawn Calvin Clark con sist two sheets approximately 3 ft 7 ft first impression didnt have much detail two reasons construc tion really quite simple Ron Calvin must have assumed very experienced modelers would using plans examle dowels shown leading edge wing anchors trailing edges simply note about using nylon screws hold wing no detail shown no detail engine radio installation things wont bother experienced builder could Nor~ AVIONIUS J&AcH INC ACCUETACH 1 LCITALqMoMITOR DIR~TER GE TACHof CHARto get G& Determ ne state d Makes t possIble Select idle thIiJof yoUf N9 accuratecharge5 wsafely J5 Jtd adjUStmebatter~pack nflharg scale r 100 cycle Ch~bat watChI~~ig nals dUa1ox x out bi1t pfeCI terY combo5ffl charge 5jQfl electronics ORDER YOURS NOW 79id Send check money order no 000s NorCal AVIONICS Inc PO Box 70956 yvale CA 94086California residents add 6% tax Add $300 shipping outside continental USADealer inquiries invited real stumbling blocks beginner construction really quite straightforward simple using common sport RC techniques Except spars hardwood plywood balsa lots Some substitutions cheaper materials could save lot money example -in sheet balsa fuselage sides could replaced door-skin ply backed up -in sq spruce longerons balsa formers ribs could cut foam core board dont mean criticism design just hints accomplish same thing having mortgage farm Super SunRay uncommon design very good flier wont see sitting next field plans available Ron Mangum PO Box 8244 Greensboro NC 27410 Waco UPF-7 plans UPF-7 opencockpit biplane similar contemporary PT-17 have soft spot heart aircraft because first open biplane ever flew got private ticket late Forties small field near Portsmouth VA field like era now covered houses Anyway owner field addition Aeronca Champs used training two airplanes really intrigued clipped-wing Monocoupe restoring other operational UPF-7 owner really wrapped up Monocoupe built display model complete planned color scheme traded model him check-out flying time Waco time effort well spent part Dave Richardsons UPF-7 quarter-scale plans show Quadra mount spans 86-in 733/4-in long estimated 23 lb shown plans just within comfortable capabilities Quadra first saw Daves prototype fly STARS rally 1980 Kioritz slightly larger engine allows little margin enor puts bit snap maneuvers Almost engines under 4 ci will fit nicely radial cowl plans consist three sheets approximately 3 ft 5 ft plus smaller sheet landing gear details addition well-written four-page instruction booklet questions came mind looking plans answered time finished reading booklet available Dave Rich ardson Star Route Deposit NY 13754 50cc Quadra other day got slightly latebut very welcomeChristmas present Im writing early January UPS dropped off brand new 50cc Quadra Its first ones off production line looks great havent chance run yet will soon results will next Big Bangers article Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 52 fiters have hard time getting engine last contest let alone whole season FAI engine possible have engine last whole Racing season started Racing glow plugs 29 39 Now some over $2 Formula use plug per flight lucky some dont last whole flight FAI competition could possibly use same plug whole weekend April 1983 127