pumping fuel scale model engine tank completely enclosed cowling Jack objects usual method fumbling needle nose pliers through small opening remove fuel tube carburetor equally objectionable replacement afterward Quite possibly problem has solved numerous ways other modelers would like share knowledge through column some installations relatively simple matter split cowl its upper half removable exposing engine tank filling have used method Douglas Mailplane single machine screw hidden dummy air intake secure cowl half slightly inconvenient because cowl must removed flight advan tages immediately evident 1 tank visible during filling prevent spilling raw fuel inside tank compartment 2 Just before replacing cowl finger can placed over carburetor air intake prop given few flicks prime engine easier starting 3 Muffler pres sure vent tubes need disturbed tank vented through muffler during filling tank engine really buried cowl removal major task have used another method some success tank three openings needed such Kraft tank usual tube used tank carb upper portion tank parallel tubes run convenient opening cowl bottom filling venting Vent tubes equally effective regardless direction taken tank can run downward length Most prototypes have exhaust cooling air outlets can used termination vent tubes Close examina tion full-size planes will reveal 32 Model Aviation FUEL LINES Letters trom Frank Healey Jack George inquire about methods Fifth cylinder Wright J-5 missing Model engine head barely visible its place 20 degrees inverted neatly detailed Pitcalrn Maliwing PA-5 built Al Kretz Bob Vail has neatly inserted K&B 61 beneath dummy engine 1913 Fokker Spider minimum effect scale appearance Planes smooth nose lose authentic look engine exposed Inverted Uuadra OT ilomey Hukolts FleetTrainer sandwiched between bottom cylinders dummy Kinner Vertical inverted mounting can cause difficulties glow enginesespecially starting Highly detailed Mercedes engine Ed Wissers Albatros DV includes spark plugs wires valve rockers Model engine completely hidden tubes extending area venting battery box tank overflow presence tubes will out scale operation pump fuel tube preferably lower two tank watch fuel run other indicating tank full have made practice conserve overflow fuel run extra tube overflow vent back fuel container tank full pump circulating fuel plane tank returning bottle instant tank becomes filled bubbles visible trans parent return tube warn pump should stopped problem system tank slightly pressur ized tends drive fuel carburetor could flood upright en gine prop stopped wrong position Fortunately has never hap pened worst have experienced dribbling bit fuel carb inside cowl could prevented forethought strategically placed paper napkin during fueling engine automatically primed starting small amount fuel forced carb advantage closely cowled en gines would difficult prime amount excessive indicates need raise planes nose slightly during fueling operating muffler pressure tank necessary Y connection placed return tube branch Y can connected muffler have made Y two short lengths 1/8 diameter brass tubing soldered joint follows fill vent tubes must identified avoid pumping fuel muffler accomplish using black tube vent-muffler line clear tube fill line Since muffler pressure would lost through both tubes open ends must plugged after filling tank use #4-40 machine screws pushed tube ends plugs hold tightly easy extract final form now have models exhaust pipe muffler extending cowl opening scale location two fuel tubes fastened just inside opening small aluminum clamps same area out sight mount sub miniature phone jack glow ignition matching plug wired starting bat tery Wires jack connected glow plug brass set collar solder lug fastened beneath engine mounting screw Wire should no smaller #18 fuel starting service done point under cowl Except satisfaction builder Sport Scale planes may require hideaway treatment service facilities AMA Precision Scale models can benefit static scoring non-competitive modeler could use methods preservation scale appearance Supertigre 6118 mounted 30degree angle muffler smoke system Duane Galls Continued page 109 1/5-scale Bucker Jungman enclosed within fiberglass epoxy cowling June 1979 33 False firewall spaced forward ply fuselage sides shorten fuel line Bob Wiachers Piei Beryl HP 61 needle valve above tank center Two uppertubes fill vent iead opening bottom cowl Bud Nosens newest kit Consolidated Catalina twin 60 power has 10 ft span glass hull sheetingif extra tip made used drawing curve tip sheeting blending fun construction wing tip jig spacer blocks gives good alignment will support some trimming sand blending both panels finished top saw cut rib webbing will allow center section plywood gussets stalled Trim spars proper dihedral angles line up root rib wing upside down edge working surface block up leading edge trailing edge weigh down Slide plywood extensions down inward Check adjust fit before adding glue alignment fit check out add thin coats adhesive slide position Repeat process other panel Clamp pin until dry Add landing gear blocks support ribs Drill small holes landing gear hold-down straps Install gear clamps coat epoxy Finish wing adding lowertips spar webbing sheeting cap strips Carve plane file sand-blend finish joining wing sections requires some careful attention step planning Tail Surfaces rudder/fin stabilizer/ elevator sandwich balsa/plywood core structures laminated outlines add stiff ness resist denting better hori zontal single-grained structure also easier sand shape outline allows use soft balsa filler shape lightened plywood core carries hinge fin extension slot improves align ment strength Refer instruction sheet structure accomplished suggest prepare assemblies outline profile can sawed out after glue-up finished insuring perimeter edge square ness length 1/16 dia music wire works very good hinge gap spacer tool tall brace l holes pre drilled used alignment keys Also drawn ballpoint center lines alignment prefinished saw cut outline used template wrap around laminated part structure sandwiching laminating completed before shaping sand-blending started Try pick least medium hard 1/16 straight grained balsa laminating Wet pieces areas require tight radius bends Use soft-light 3/32 sheets side 1/64 plywood core nice allowance sanding Prior hinging assembly fuse lage separate surfaces hinge line using small saw straightedge several passes knife blade Sand edges round required Add brace wire hardwood dowels Slip out sanding until flush before gluing place 1/16 holes pre-drilled through dowels just prior final sanding Finishing plane covered MonoKote including clear over cabin all-over-white orange secon dary color black trim tape separating colors Cabin doors outlined 1/32 black tape Spray over color tapes clear enamel model dry weighs just under 4 lbs bare airframe LG wires near 2 lbs 4- 6-ounce pylon tank can used However 6 ounce must rotated 900 slide fit Engine Max 30 muffler Robart wheels narrow enough fit pants well used World Engines Expert radio Sb servos No servo relocation required adjust center gravity plan location Using similar-size equip ment power should require shifting components Make sure nose does balance above horizontal plane supported CG position Adjust control surfaces follows Ailerons 3/16 up down rudder 40 degrees right left elevator 30 40 degrees used heavy monofilament tail brace spring retain tension landing gear shock struts wing struts add appearance should overlooked Since removable will easy add show remove flying CREDITS wish give credit thanks following people responding helpful background information Mr Louis S Casey Curator Aircraft National Air Space Museum Smithsonian Institu tion Washington DC Patti Schaft Wright-Patterson Air Force Base Air Force Museum Photography Tim Miskell P Jessee Outdoor pictures Bob Jolly surely hope enjoy building Coupe construction places though little different worthy best craftsmanship have some particular problem wish correspond send inquiry J Jessee 890 Fairview Ave D202 Bowling Green KY 42101 RC Scale/Wischers continued page 33 After days flying tank needs drained usually means removal cowl carburetor line can disconnected Unquestionably nuisance problem have found easy answer vexation can minimized using single easily access ible machine screw hold cowl place dowels snug fit other locations alignment assembling Fuel Tanks scaling down proto types model size panel cowl lines engine compartment often found wrong position due model engines being disproportionately smaller full size firewall located prototype too far rearward June1979 109 Kit FS37 $2995 Scale 1/2 1 Wing Span-44 IAnother Great R/C KitFor 049-1O Engines Beautiful New 44 TriPacer developed Ifor 2 4 channel RiC expertly designed Ifeaturing accurately diecut Balsa pre Icisely vacuumformed parts Hardware detailed Plans Instructions models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA
Edition: Model Aviation - 1979/06
Page Numbers: 32, 33, 109, 110
pumping fuel scale model engine tank completely enclosed cowling Jack objects usual method fumbling needle nose pliers through small opening remove fuel tube carburetor equally objectionable replacement afterward Quite possibly problem has solved numerous ways other modelers would like share knowledge through column some installations relatively simple matter split cowl its upper half removable exposing engine tank filling have used method Douglas Mailplane single machine screw hidden dummy air intake secure cowl half slightly inconvenient because cowl must removed flight advan tages immediately evident 1 tank visible during filling prevent spilling raw fuel inside tank compartment 2 Just before replacing cowl finger can placed over carburetor air intake prop given few flicks prime engine easier starting 3 Muffler pres sure vent tubes need disturbed tank vented through muffler during filling tank engine really buried cowl removal major task have used another method some success tank three openings needed such Kraft tank usual tube used tank carb upper portion tank parallel tubes run convenient opening cowl bottom filling venting Vent tubes equally effective regardless direction taken tank can run downward length Most prototypes have exhaust cooling air outlets can used termination vent tubes Close examina tion full-size planes will reveal 32 Model Aviation FUEL LINES Letters trom Frank Healey Jack George inquire about methods Fifth cylinder Wright J-5 missing Model engine head barely visible its place 20 degrees inverted neatly detailed Pitcalrn Maliwing PA-5 built Al Kretz Bob Vail has neatly inserted K&B 61 beneath dummy engine 1913 Fokker Spider minimum effect scale appearance Planes smooth nose lose authentic look engine exposed Inverted Uuadra OT ilomey Hukolts FleetTrainer sandwiched between bottom cylinders dummy Kinner Vertical inverted mounting can cause difficulties glow enginesespecially starting Highly detailed Mercedes engine Ed Wissers Albatros DV includes spark plugs wires valve rockers Model engine completely hidden tubes extending area venting battery box tank overflow presence tubes will out scale operation pump fuel tube preferably lower two tank watch fuel run other indicating tank full have made practice conserve overflow fuel run extra tube overflow vent back fuel container tank full pump circulating fuel plane tank returning bottle instant tank becomes filled bubbles visible trans parent return tube warn pump should stopped problem system tank slightly pressur ized tends drive fuel carburetor could flood upright en gine prop stopped wrong position Fortunately has never hap pened worst have experienced dribbling bit fuel carb inside cowl could prevented forethought strategically placed paper napkin during fueling engine automatically primed starting small amount fuel forced carb advantage closely cowled en gines would difficult prime amount excessive indicates need raise planes nose slightly during fueling operating muffler pressure tank necessary Y connection placed return tube branch Y can connected muffler have made Y two short lengths 1/8 diameter brass tubing soldered joint follows fill vent tubes must identified avoid pumping fuel muffler accomplish using black tube vent-muffler line clear tube fill line Since muffler pressure would lost through both tubes open ends must plugged after filling tank use #4-40 machine screws pushed tube ends plugs hold tightly easy extract final form now have models exhaust pipe muffler extending cowl opening scale location two fuel tubes fastened just inside opening small aluminum clamps same area out sight mount sub miniature phone jack glow ignition matching plug wired starting bat tery Wires jack connected glow plug brass set collar solder lug fastened beneath engine mounting screw Wire should no smaller #18 fuel starting service done point under cowl Except satisfaction builder Sport Scale planes may require hideaway treatment service facilities AMA Precision Scale models can benefit static scoring non-competitive modeler could use methods preservation scale appearance Supertigre 6118 mounted 30degree angle muffler smoke system Duane Galls Continued page 109 1/5-scale Bucker Jungman enclosed within fiberglass epoxy cowling June 1979 33 False firewall spaced forward ply fuselage sides shorten fuel line Bob Wiachers Piei Beryl HP 61 needle valve above tank center Two uppertubes fill vent iead opening bottom cowl Bud Nosens newest kit Consolidated Catalina twin 60 power has 10 ft span glass hull sheetingif extra tip made used drawing curve tip sheeting blending fun construction wing tip jig spacer blocks gives good alignment will support some trimming sand blending both panels finished top saw cut rib webbing will allow center section plywood gussets stalled Trim spars proper dihedral angles line up root rib wing upside down edge working surface block up leading edge trailing edge weigh down Slide plywood extensions down inward Check adjust fit before adding glue alignment fit check out add thin coats adhesive slide position Repeat process other panel Clamp pin until dry Add landing gear blocks support ribs Drill small holes landing gear hold-down straps Install gear clamps coat epoxy Finish wing adding lowertips spar webbing sheeting cap strips Carve plane file sand-blend finish joining wing sections requires some careful attention step planning Tail Surfaces rudder/fin stabilizer/ elevator sandwich balsa/plywood core structures laminated outlines add stiff ness resist denting better hori zontal single-grained structure also easier sand shape outline allows use soft balsa filler shape lightened plywood core carries hinge fin extension slot improves align ment strength Refer instruction sheet structure accomplished suggest prepare assemblies outline profile can sawed out after glue-up finished insuring perimeter edge square ness length 1/16 dia music wire works very good hinge gap spacer tool tall brace l holes pre drilled used alignment keys Also drawn ballpoint center lines alignment prefinished saw cut outline used template wrap around laminated part structure sandwiching laminating completed before shaping sand-blending started Try pick least medium hard 1/16 straight grained balsa laminating Wet pieces areas require tight radius bends Use soft-light 3/32 sheets side 1/64 plywood core nice allowance sanding Prior hinging assembly fuse lage separate surfaces hinge line using small saw straightedge several passes knife blade Sand edges round required Add brace wire hardwood dowels Slip out sanding until flush before gluing place 1/16 holes pre-drilled through dowels just prior final sanding Finishing plane covered MonoKote including clear over cabin all-over-white orange secon dary color black trim tape separating colors Cabin doors outlined 1/32 black tape Spray over color tapes clear enamel model dry weighs just under 4 lbs bare airframe LG wires near 2 lbs 4- 6-ounce pylon tank can used However 6 ounce must rotated 900 slide fit Engine Max 30 muffler Robart wheels narrow enough fit pants well used World Engines Expert radio Sb servos No servo relocation required adjust center gravity plan location Using similar-size equip ment power should require shifting components Make sure nose does balance above horizontal plane supported CG position Adjust control surfaces follows Ailerons 3/16 up down rudder 40 degrees right left elevator 30 40 degrees used heavy monofilament tail brace spring retain tension landing gear shock struts wing struts add appearance should overlooked Since removable will easy add show remove flying CREDITS wish give credit thanks following people responding helpful background information Mr Louis S Casey Curator Aircraft National Air Space Museum Smithsonian Institu tion Washington DC Patti Schaft Wright-Patterson Air Force Base Air Force Museum Photography Tim Miskell P Jessee Outdoor pictures Bob Jolly surely hope enjoy building Coupe construction places though little different worthy best craftsmanship have some particular problem wish correspond send inquiry J Jessee 890 Fairview Ave D202 Bowling Green KY 42101 RC Scale/Wischers continued page 33 After days flying tank needs drained usually means removal cowl carburetor line can disconnected Unquestionably nuisance problem have found easy answer vexation can minimized using single easily access ible machine screw hold cowl place dowels snug fit other locations alignment assembling Fuel Tanks scaling down proto types model size panel cowl lines engine compartment often found wrong position due model engines being disproportionately smaller full size firewall located prototype too far rearward June1979 109 Kit FS37 $2995 Scale 1/2 1 Wing Span-44 IAnother Great R/C KitFor 049-1O Engines Beautiful New 44 TriPacer developed Ifor 2 4 channel RiC expertly designed Ifeaturing accurately diecut Balsa pre Icisely vacuumformed parts Hardware detailed Plans Instructions models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA
Edition: Model Aviation - 1979/06
Page Numbers: 32, 33, 109, 110
pumping fuel scale model engine tank completely enclosed cowling Jack objects usual method fumbling needle nose pliers through small opening remove fuel tube carburetor equally objectionable replacement afterward Quite possibly problem has solved numerous ways other modelers would like share knowledge through column some installations relatively simple matter split cowl its upper half removable exposing engine tank filling have used method Douglas Mailplane single machine screw hidden dummy air intake secure cowl half slightly inconvenient because cowl must removed flight advan tages immediately evident 1 tank visible during filling prevent spilling raw fuel inside tank compartment 2 Just before replacing cowl finger can placed over carburetor air intake prop given few flicks prime engine easier starting 3 Muffler pres sure vent tubes need disturbed tank vented through muffler during filling tank engine really buried cowl removal major task have used another method some success tank three openings needed such Kraft tank usual tube used tank carb upper portion tank parallel tubes run convenient opening cowl bottom filling venting Vent tubes equally effective regardless direction taken tank can run downward length Most prototypes have exhaust cooling air outlets can used termination vent tubes Close examina tion full-size planes will reveal 32 Model Aviation FUEL LINES Letters trom Frank Healey Jack George inquire about methods Fifth cylinder Wright J-5 missing Model engine head barely visible its place 20 degrees inverted neatly detailed Pitcalrn Maliwing PA-5 built Al Kretz Bob Vail has neatly inserted K&B 61 beneath dummy engine 1913 Fokker Spider minimum effect scale appearance Planes smooth nose lose authentic look engine exposed Inverted Uuadra OT ilomey Hukolts FleetTrainer sandwiched between bottom cylinders dummy Kinner Vertical inverted mounting can cause difficulties glow enginesespecially starting Highly detailed Mercedes engine Ed Wissers Albatros DV includes spark plugs wires valve rockers Model engine completely hidden tubes extending area venting battery box tank overflow presence tubes will out scale operation pump fuel tube preferably lower two tank watch fuel run other indicating tank full have made practice conserve overflow fuel run extra tube overflow vent back fuel container tank full pump circulating fuel plane tank returning bottle instant tank becomes filled bubbles visible trans parent return tube warn pump should stopped problem system tank slightly pressur ized tends drive fuel carburetor could flood upright en gine prop stopped wrong position Fortunately has never hap pened worst have experienced dribbling bit fuel carb inside cowl could prevented forethought strategically placed paper napkin during fueling engine automatically primed starting small amount fuel forced carb advantage closely cowled en gines would difficult prime amount excessive indicates need raise planes nose slightly during fueling operating muffler pressure tank necessary Y connection placed return tube branch Y can connected muffler have made Y two short lengths 1/8 diameter brass tubing soldered joint follows fill vent tubes must identified avoid pumping fuel muffler accomplish using black tube vent-muffler line clear tube fill line Since muffler pressure would lost through both tubes open ends must plugged after filling tank use #4-40 machine screws pushed tube ends plugs hold tightly easy extract final form now have models exhaust pipe muffler extending cowl opening scale location two fuel tubes fastened just inside opening small aluminum clamps same area out sight mount sub miniature phone jack glow ignition matching plug wired starting bat tery Wires jack connected glow plug brass set collar solder lug fastened beneath engine mounting screw Wire should no smaller #18 fuel starting service done point under cowl Except satisfaction builder Sport Scale planes may require hideaway treatment service facilities AMA Precision Scale models can benefit static scoring non-competitive modeler could use methods preservation scale appearance Supertigre 6118 mounted 30degree angle muffler smoke system Duane Galls Continued page 109 1/5-scale Bucker Jungman enclosed within fiberglass epoxy cowling June 1979 33 False firewall spaced forward ply fuselage sides shorten fuel line Bob Wiachers Piei Beryl HP 61 needle valve above tank center Two uppertubes fill vent iead opening bottom cowl Bud Nosens newest kit Consolidated Catalina twin 60 power has 10 ft span glass hull sheetingif extra tip made used drawing curve tip sheeting blending fun construction wing tip jig spacer blocks gives good alignment will support some trimming sand blending both panels finished top saw cut rib webbing will allow center section plywood gussets stalled Trim spars proper dihedral angles line up root rib wing upside down edge working surface block up leading edge trailing edge weigh down Slide plywood extensions down inward Check adjust fit before adding glue alignment fit check out add thin coats adhesive slide position Repeat process other panel Clamp pin until dry Add landing gear blocks support ribs Drill small holes landing gear hold-down straps Install gear clamps coat epoxy Finish wing adding lowertips spar webbing sheeting cap strips Carve plane file sand-blend finish joining wing sections requires some careful attention step planning Tail Surfaces rudder/fin stabilizer/ elevator sandwich balsa/plywood core structures laminated outlines add stiff ness resist denting better hori zontal single-grained structure also easier sand shape outline allows use soft balsa filler shape lightened plywood core carries hinge fin extension slot improves align ment strength Refer instruction sheet structure accomplished suggest prepare assemblies outline profile can sawed out after glue-up finished insuring perimeter edge square ness length 1/16 dia music wire works very good hinge gap spacer tool tall brace l holes pre drilled used alignment keys Also drawn ballpoint center lines alignment prefinished saw cut outline used template wrap around laminated part structure sandwiching laminating completed before shaping sand-blending started Try pick least medium hard 1/16 straight grained balsa laminating Wet pieces areas require tight radius bends Use soft-light 3/32 sheets side 1/64 plywood core nice allowance sanding Prior hinging assembly fuse lage separate surfaces hinge line using small saw straightedge several passes knife blade Sand edges round required Add brace wire hardwood dowels Slip out sanding until flush before gluing place 1/16 holes pre-drilled through dowels just prior final sanding Finishing plane covered MonoKote including clear over cabin all-over-white orange secon dary color black trim tape separating colors Cabin doors outlined 1/32 black tape Spray over color tapes clear enamel model dry weighs just under 4 lbs bare airframe LG wires near 2 lbs 4- 6-ounce pylon tank can used However 6 ounce must rotated 900 slide fit Engine Max 30 muffler Robart wheels narrow enough fit pants well used World Engines Expert radio Sb servos No servo relocation required adjust center gravity plan location Using similar-size equip ment power should require shifting components Make sure nose does balance above horizontal plane supported CG position Adjust control surfaces follows Ailerons 3/16 up down rudder 40 degrees right left elevator 30 40 degrees used heavy monofilament tail brace spring retain tension landing gear shock struts wing struts add appearance should overlooked Since removable will easy add show remove flying CREDITS wish give credit thanks following people responding helpful background information Mr Louis S Casey Curator Aircraft National Air Space Museum Smithsonian Institu tion Washington DC Patti Schaft Wright-Patterson Air Force Base Air Force Museum Photography Tim Miskell P Jessee Outdoor pictures Bob Jolly surely hope enjoy building Coupe construction places though little different worthy best craftsmanship have some particular problem wish correspond send inquiry J Jessee 890 Fairview Ave D202 Bowling Green KY 42101 RC Scale/Wischers continued page 33 After days flying tank needs drained usually means removal cowl carburetor line can disconnected Unquestionably nuisance problem have found easy answer vexation can minimized using single easily access ible machine screw hold cowl place dowels snug fit other locations alignment assembling Fuel Tanks scaling down proto types model size panel cowl lines engine compartment often found wrong position due model engines being disproportionately smaller full size firewall located prototype too far rearward June1979 109 Kit FS37 $2995 Scale 1/2 1 Wing Span-44 IAnother Great R/C KitFor 049-1O Engines Beautiful New 44 TriPacer developed Ifor 2 4 channel RiC expertly designed Ifeaturing accurately diecut Balsa pre Icisely vacuumformed parts Hardware detailed Plans Instructions models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA
Edition: Model Aviation - 1979/06
Page Numbers: 32, 33, 109, 110
pumping fuel scale model engine tank completely enclosed cowling Jack objects usual method fumbling needle nose pliers through small opening remove fuel tube carburetor equally objectionable replacement afterward Quite possibly problem has solved numerous ways other modelers would like share knowledge through column some installations relatively simple matter split cowl its upper half removable exposing engine tank filling have used method Douglas Mailplane single machine screw hidden dummy air intake secure cowl half slightly inconvenient because cowl must removed flight advan tages immediately evident 1 tank visible during filling prevent spilling raw fuel inside tank compartment 2 Just before replacing cowl finger can placed over carburetor air intake prop given few flicks prime engine easier starting 3 Muffler pres sure vent tubes need disturbed tank vented through muffler during filling tank engine really buried cowl removal major task have used another method some success tank three openings needed such Kraft tank usual tube used tank carb upper portion tank parallel tubes run convenient opening cowl bottom filling venting Vent tubes equally effective regardless direction taken tank can run downward length Most prototypes have exhaust cooling air outlets can used termination vent tubes Close examina tion full-size planes will reveal 32 Model Aviation FUEL LINES Letters trom Frank Healey Jack George inquire about methods Fifth cylinder Wright J-5 missing Model engine head barely visible its place 20 degrees inverted neatly detailed Pitcalrn Maliwing PA-5 built Al Kretz Bob Vail has neatly inserted K&B 61 beneath dummy engine 1913 Fokker Spider minimum effect scale appearance Planes smooth nose lose authentic look engine exposed Inverted Uuadra OT ilomey Hukolts FleetTrainer sandwiched between bottom cylinders dummy Kinner Vertical inverted mounting can cause difficulties glow enginesespecially starting Highly detailed Mercedes engine Ed Wissers Albatros DV includes spark plugs wires valve rockers Model engine completely hidden tubes extending area venting battery box tank overflow presence tubes will out scale operation pump fuel tube preferably lower two tank watch fuel run other indicating tank full have made practice conserve overflow fuel run extra tube overflow vent back fuel container tank full pump circulating fuel plane tank returning bottle instant tank becomes filled bubbles visible trans parent return tube warn pump should stopped problem system tank slightly pressur ized tends drive fuel carburetor could flood upright en gine prop stopped wrong position Fortunately has never hap pened worst have experienced dribbling bit fuel carb inside cowl could prevented forethought strategically placed paper napkin during fueling engine automatically primed starting small amount fuel forced carb advantage closely cowled en gines would difficult prime amount excessive indicates need raise planes nose slightly during fueling operating muffler pressure tank necessary Y connection placed return tube branch Y can connected muffler have made Y two short lengths 1/8 diameter brass tubing soldered joint follows fill vent tubes must identified avoid pumping fuel muffler accomplish using black tube vent-muffler line clear tube fill line Since muffler pressure would lost through both tubes open ends must plugged after filling tank use #4-40 machine screws pushed tube ends plugs hold tightly easy extract final form now have models exhaust pipe muffler extending cowl opening scale location two fuel tubes fastened just inside opening small aluminum clamps same area out sight mount sub miniature phone jack glow ignition matching plug wired starting bat tery Wires jack connected glow plug brass set collar solder lug fastened beneath engine mounting screw Wire should no smaller #18 fuel starting service done point under cowl Except satisfaction builder Sport Scale planes may require hideaway treatment service facilities AMA Precision Scale models can benefit static scoring non-competitive modeler could use methods preservation scale appearance Supertigre 6118 mounted 30degree angle muffler smoke system Duane Galls Continued page 109 1/5-scale Bucker Jungman enclosed within fiberglass epoxy cowling June 1979 33 False firewall spaced forward ply fuselage sides shorten fuel line Bob Wiachers Piei Beryl HP 61 needle valve above tank center Two uppertubes fill vent iead opening bottom cowl Bud Nosens newest kit Consolidated Catalina twin 60 power has 10 ft span glass hull sheetingif extra tip made used drawing curve tip sheeting blending fun construction wing tip jig spacer blocks gives good alignment will support some trimming sand blending both panels finished top saw cut rib webbing will allow center section plywood gussets stalled Trim spars proper dihedral angles line up root rib wing upside down edge working surface block up leading edge trailing edge weigh down Slide plywood extensions down inward Check adjust fit before adding glue alignment fit check out add thin coats adhesive slide position Repeat process other panel Clamp pin until dry Add landing gear blocks support ribs Drill small holes landing gear hold-down straps Install gear clamps coat epoxy Finish wing adding lowertips spar webbing sheeting cap strips Carve plane file sand-blend finish joining wing sections requires some careful attention step planning Tail Surfaces rudder/fin stabilizer/ elevator sandwich balsa/plywood core structures laminated outlines add stiff ness resist denting better hori zontal single-grained structure also easier sand shape outline allows use soft balsa filler shape lightened plywood core carries hinge fin extension slot improves align ment strength Refer instruction sheet structure accomplished suggest prepare assemblies outline profile can sawed out after glue-up finished insuring perimeter edge square ness length 1/16 dia music wire works very good hinge gap spacer tool tall brace l holes pre drilled used alignment keys Also drawn ballpoint center lines alignment prefinished saw cut outline used template wrap around laminated part structure sandwiching laminating completed before shaping sand-blending started Try pick least medium hard 1/16 straight grained balsa laminating Wet pieces areas require tight radius bends Use soft-light 3/32 sheets side 1/64 plywood core nice allowance sanding Prior hinging assembly fuse lage separate surfaces hinge line using small saw straightedge several passes knife blade Sand edges round required Add brace wire hardwood dowels Slip out sanding until flush before gluing place 1/16 holes pre-drilled through dowels just prior final sanding Finishing plane covered MonoKote including clear over cabin all-over-white orange secon dary color black trim tape separating colors Cabin doors outlined 1/32 black tape Spray over color tapes clear enamel model dry weighs just under 4 lbs bare airframe LG wires near 2 lbs 4- 6-ounce pylon tank can used However 6 ounce must rotated 900 slide fit Engine Max 30 muffler Robart wheels narrow enough fit pants well used World Engines Expert radio Sb servos No servo relocation required adjust center gravity plan location Using similar-size equip ment power should require shifting components Make sure nose does balance above horizontal plane supported CG position Adjust control surfaces follows Ailerons 3/16 up down rudder 40 degrees right left elevator 30 40 degrees used heavy monofilament tail brace spring retain tension landing gear shock struts wing struts add appearance should overlooked Since removable will easy add show remove flying CREDITS wish give credit thanks following people responding helpful background information Mr Louis S Casey Curator Aircraft National Air Space Museum Smithsonian Institu tion Washington DC Patti Schaft Wright-Patterson Air Force Base Air Force Museum Photography Tim Miskell P Jessee Outdoor pictures Bob Jolly surely hope enjoy building Coupe construction places though little different worthy best craftsmanship have some particular problem wish correspond send inquiry J Jessee 890 Fairview Ave D202 Bowling Green KY 42101 RC Scale/Wischers continued page 33 After days flying tank needs drained usually means removal cowl carburetor line can disconnected Unquestionably nuisance problem have found easy answer vexation can minimized using single easily access ible machine screw hold cowl place dowels snug fit other locations alignment assembling Fuel Tanks scaling down proto types model size panel cowl lines engine compartment often found wrong position due model engines being disproportionately smaller full size firewall located prototype too far rearward June1979 109 Kit FS37 $2995 Scale 1/2 1 Wing Span-44 IAnother Great R/C KitFor 049-1O Engines Beautiful New 44 TriPacer developed Ifor 2 4 channel RiC expertly designed Ifeaturing accurately diecut Balsa pre Icisely vacuumformed parts Hardware detailed Plans Instructions models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA