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Goblin: Minimum Investment for Maximum Fun

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

Author: J. Hunton

,

Author: B. Winter


Edition: Model Aviation - 1997/07
Page Numbers: 24, 25, 26, 27, 28, 29, 30

THIS SIMPLE UNPRETENTIOUS diminutive model gives us no-lift 15-20minute flights amazes Just flick switch fly Under nearly calm conditions Goblin can best efficiency should flown just trim have decent flying site no turbulence trees smaller six-cell battery pack provides protracted motor runs seeking lift under power Goblin still climbs higher will ever need goon six cells just takes longer windy turbulent days seven-cell 800 mAh pack works better get up out chop Eight cells peppy gives shorter six-plus minutes run 24 Model Aviation MUM IMFESTEENT FOE MAXIMUM FUN short-coupled Goblin will seek turn lift weak-lift day turning left model changes off turning right trying tell something Leave alone am convinced Bill Winter looks model will go up looks away will sink am gifted strong-lift day look model wiggle enters lift heel over stay lift Construction When purchasing wood order pick out selected light wood lighter airplane Use Titebond aliphatic resin relatively slow-drying applications CyA cyanoacrylate glue Fuselage Trace profiles side panels cut shape Sand both sides fine sandpaper block flat Cut out side doublers similarly Lay out side framing pencil framing added later being sure identify left right side Install doublers used 3M spray adhesive join sides doublersbalsa tends curl away water-based glues Add longerons verticals Cut out formers glue 1 1 1 b 2 place onto side using small triangle hold vertical CyA can used step will best use Titebond attaching opposite side allow time positioning formers proper alignment CyA can used through Titebond rapid adhesion Place partly assembled sides over top view Join rear fuselage tail block Check vertical alignment triangle Alignment sides must right centerline V tail will align flight path Use Titebond attach intermediate rear crosspieces Install other fuselage members motor mount blocks nose ring Tack-glue front top block place Sand across top bottom assembly sanding block before installing top bottom sheets Add top bottom sheets finish sanding completed fuselage Cut out battery hatch detail shown install skid until after covering optional lightening holes made piece one-inch-diameter brass tubing has sharpened end file Rotate tube back forth pressing down lightly Cut ventilation holes now too Remove top nose sheeting install motor wiring switches Test-run motor loosen push protruding switches etc inside Wing Cut out wing ribs Place waxed paper over plan Pin down bottom spar trailing edge wing Construction Built-up Covering/finish Micafilm July1997 25 Goblin easy build fly surprising performance Authors prefer skid landings easier consistent wheeled gear Photos provided Bernie Stuecker Graphic Design Osris Kunz Diminutive V-tailed model easy build fly Based popular Speed 400 motor design inherently stable aerodynamically clean Type RC Electric SportFunctions Motor ailerons elevators Flying weight 33 ounces Wingspan 46 inches Motor Hobby Lobby LMOO2 Speed 400 72V 1721 titanium gearbox panel Insert bottom center-section sheeting ribs tilting root tip ribs shown Glue ribs place Add leading edge top spar web members turbulator spar Install spar joiner plywood joiner lightly cracked broken 50 forward sweep crack glued top sheeting wing panel Build other wing similarly hut sheet top center section until wing halves have joined basic wings have assembled add remaining top sheeting fixed trailing edge parts root Cut ailerons 3A6 x tock shape available Install aileron linkage Cut hole bottom center section servo installation After covering install hardwood servo mount rails onto balsa sheeting install servo linkage used gunsmith s trick accurately mate wing fuselage Lay strips masking tape bottom wing mates Apply lipstick tape Mount wing remove Sand away fuselage material lipstick shows Repeat process until get good tight match Finish-sand wing panels fine paper large block wood oversand lose airfoil profile Empennage Build up stabilators over plans Sand smooth fine paper block Round off leading edge Cut elevators very light sheet sand tapered shape Pre-final assembly Join stabilators 900 Slip fuselage slot Lay fuselage bench Check trim fuselage necessary stab 450 respect work surface check both sides stabilator center section must lay along centerline bottom fuselage proper decalage Never mind slot fuselage seems odd angle will OK long stabilator joint line lies straight along bottom fuselage glue place time Fit wing fuselage check level respect bench Drill holes wing hold-down dowels install until covering finishing complete Covering Prepare surfaces sanding block touch up curves sanding pad apply two coats Balsarite Sand lightly #150 production paper after coat Micafilm very strong light material Follow printed instructions closely Cover wing bottom first fasten workbench trailing edge blocked up /32 Cover top object get 3A2 twist washout wing panel important stall characteristics gliding efficiency 26 Model Aviation l assembly Follow same alignment steps pre-final assembly time glue stabilator assembly place Check alignment top view measuring tips common point fuselage firewall Check horizontal alignment wing measuring tips tailpost mark wing root front back consistency alignment Install servos check proper control-surface motion critical model balances indicated Shift batteries can get accurate balance add ballast Check spanwise balance correct tip weight required Flying first test flight nearly Y2 hour soaring eagles buzzards could see buzzards better then-all-white model next flights bottom painted black tips yellow helped visibility considerably numbers motor performance came up much better air calculated Just verify numbers test flight made constant low altitude 100 feet could tell BEC would kick numbers checked out fine An interesting flight phenomenon occurred during tests normal flight will translating engine power climb will holding velocity relatively constant generally no trim will needed July1997 27 Fuselage construction typical box V-tail installation made simple accurate alignment Lightening holes optional Goblins wing construction straightforward light Six degrees dihedral provides good stability flying very high radio systems will vary Futaba Attack shown eliminating separate receiver battery providing BEC high-altitude protection power source V-tail linkage splits actuation elevators Turn bank coordination provided ailerons Battery compartment sized variety packs six-cell pack 1000 mAh cells shown runs 12 minutes 01 7 4 / L1 - 8 Model Aviation 0 BEND LINEWING JOINERCur OuT FOB RoOTREAR VIEW- WING FIBERGLASS REINFORCEMENT AT CENTER SECT~-L NOTE TREORPLYTILT ON RIBJOINER 3432 BALSA II SHEET B MS 3415 50 SPRUCEWINGPLAN TYCALWLERON W S MINI SERVOso BALSAARGALSA WEB STOBILATOR146 BALSA SHEET-- 00 PLO TOLYIIID SECT A-ADOGMER C2 RTNTKGSCREWDOWEL___________ MOTOR 3415 DOWEL I iI-- E1EV BORN S CLEVIS FORMER I--1415 BAOA44 I/R[7r RGALSASlOE/GA FUSELN3EHOSAS34IG ORHOBBY uOY CM 0021APLATETOP VIEW0400 BAWDIOABALSASBEET ICOFFBALSAW172-I TITASIO SECTION ----__ f ______iiSRIO/lT QIii j IGRILL COOLING ROLESJWING RIBS UP INTO MOTOR AREA I DOUBLER COBSAA]L-_________ 2___ FUSELAGE BOTTOMi-ALL BlAB ARE 3430 _________BALSA SAEET AND SKID DETAILS 44 BALSA DOUBLER AY TM~LAYjATIOL 04 BALSADOUBLER B0 2 545 WINTER N UGIAB HANTON DESIGNED BY BILL WINTER DRAWN JOHN NUNTONSACETI JOE BEMARCO B34 0 transition power-on power-off holding constant altitude during test flight velocity varied available power very fast first slowed down considerably meant early flight almost full down trim required As battery power began diminish more down trim clicked off until back neutral landing word caution Goblin aerodynamically sleek aircraft could possibly exceed airplanes structural capability dive out chennal best way get Goblin down hurry rack over wings-vertical spiral tactic insufficient go ahead dive necessary apply up-control very gently smoothly recover Goblin efficient result fortunate combination area loading foil sweep V perhaps covering material unfinished white Micafilm has little grain adds efficiency through turbulation Speed 400 prescribed gearbox prop batteries surprisingly effective would like bear about results Winter 1281] Melville Ln Fairfax VA 22033 John Hunton 9154 Rixeyville Rd Rixeyville VA 22737 DID NEW FOR 96 WARGIRDS 96 FOR 96 GIRDS OF PREY #2 5 THUNDER IN THESKY 51995 EACH PRIORITY MAIL TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 MVVS ENGINES Handmade Czech Republic Since 1952 MWS 120s SinIe Cylinder Handmade Masterpiece Power reliability trademarks MWS 120 Single may aware MWS commit ment offer model choice rotating cylinder exhaust position standard high performance exhaust selections MWS 120 Single offers Industry First Choice Carburetion Thats right can choose famous Walbro Pump Carburetor Instant Response Twin Needle Valve Carburetor 3096 MVVS 120 Single Cylinder22999 IVI VAfS7 Switchbud Place Ste 192-211 lands TX 77380 281-364-8011 281-298-7032 email 7562726 1 @compuservecom Support local hobby shop dont have products call tine distributors Great Planes Royal Products Morris Hobby Distributors Just Hobbies 30 Model Aviation e 1936

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