Radio Control SCALE Bob & Dolly Wischer FOAM-CUTTER CONTROL June 1983 column contained photo showing control box hot-wire foam cutting Let ters received inquiring about con tents box whether pur chased item homemade control asembled workshop using stan dard components purchased local sup pliers aluminum enclosure standard electrical components box 4 X 5 x 6 radio parts supply store Inside two transformers first Powerstat variable autotransformer prod uct Superior Electric Co Bristol CT type lOB 120-volt input variable 0-to-l20-volt output isnt safe use its output directly hot wire hecause shock hazard Its output isolated house power lines Touching metal parts foam cutter could hazardous standing con crete floor touching grounded object Any current flow 5 mA greater through human body contracts muscles person unable release grip may lethal heart affected Because hazard output El U Powerstat fed isolation trans- Transformer Co type F-60U has former separate primary secondary numerous outputs ranging 65 26 windings transformer came volts Any transformer approximately local surplus store made Triad 26- 35-volt output load-carrying Scale interiors seats controls upper R leather over balsa frame appropriate seat-edge structure aluminum tubing glued balsa Poly foam under seat leather provides cushion effect Folded leather along seat edges simulates upholstery piping arm rest well cabin linings also leather seats cockpit floor/contrcl assemblies held fuselage bottom Velcro pads pilot L actually held place beltswhich affixed seat Velcro Buckles scraps aluminum epoxied together fellow has through hundreds aerobatic maneuvers never seat belt failure 50 Model Aviation Foam cutters again Bob brought up June 1983 column two cutters use wooden frames small R small foam parts has coil spring tension cutting wire electrical connection does pass through coil spring longer foam wing cores uses 3/16-i n-diameter music wire ends tension cutter capacity least three amperes will usable available local electrical supply houses surplus stores secondary output connected pair insulated screw terminals box top supply hot wire toggle switch used control power Powerstat Doorbell tax train transfiiwmers gen era//v safe use purpose doubt check ohmmeter between put output should no con tinuity advantage type power supply its safety its infinitely-variable output regardless hot-wire length coiled steel tension spring used stretch hot wire make certain connect power supply wire current isnt carried through spring Heating spring wire causes become softened ceases spring cutting wire can nichrome material 012 025 diameter have also used music wire power supply Because output variable kind size wire isnt cricital cutting foam control knob advanced increase heat until clean cut obtained Too much heat will cause wide cut resulting undersized foam parts cutters simple wood frames wire stretched across easy handling keep light weight top box pair standard 120 volt receptacles fed directly Powerstat used other pur poses foam cutting discovered light source photo enlarger $7 miniature lamp could have its normally Continued page 148 Send dollar bill postage handling name address ear 12-pane eataleg ef 2/C sailplanes spert planes spers steIn end CATALOG ~1CO Priees range free 52495 59495 Kiss san Inn sene veor local dealer i& lI b~IpIiFhuJb Pb L4JiIJJhJ L4JJJ R/C SAILPLAflIES T POWER PLANES 9 SPORT SCALE AIRCRAFT 1578 OSAGG STRSET SAN MARCOS CALIFORNIA 92069 SAILPLANES R/C COMPETITION & SPORT SCALE R/C JEMCO SPORT SCALE BALSA COVERED FOAM WING CORES December 1983 51 Bobs infinItely-variable power supply foam cutters L has screw terminal connecting hot wire control knob Powerstat transformer plus two standard outlets used other purposes also ON/OFF switches line cord cutter-wire terminals Inside box R isolation transformer left side connected series Powerstat variable transformer vital safety element keeps house current oft cutter wire reduces possibilty lethal shocki SPORT- R/C FOR BARNSTORMERS AND STUDENTS I RC Aerobatics/Van Putte Continued aqe 145 might necessary little cleanup slots Make small syringe plastic container such small Titebond bottle Hot Stuff short length smallest alu minum tubing can get bottle file end point Mix some 30-minute epoxy heat double boiler setup until epoxy thins noticeably using syringe fill hinge slots epoxy put thin coat outer two-thirds hinge flange Insert hinges clean up epoxy stains dope thinner Allow set repeat process other part hinged surface will find case wood surrounding hinge will yield first Ive never hinge failure 15 years As Ed McMahon would probably say three techniques include pos sible way hinges could installed control surfaces Johnny Carson would say walrus-breath good job covering subject However letters rebuttal suggestions better techniques solicited Ron Van Pune ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 51 short life extended infinitely power reduced 80% secondary advantage light intensity can varied control box compensate variations negative density thin underexposed negatives power reduced creased dense negatives adjustment permits exposure times quite constant making prints Actually since gan using Aculine developer negatives need compensate much reduced also use box control motor speed blower living room fireplace serpentine stove-pipe inside enclosed fireplace carries away heated air means blower Since construction box inexpensive makes good sense find other uses Royal Air Force colors Pettit Paint Co maker Hobbypoxy products has released three color mixes useful mod elers building replicas WW LI British Royal Air Force prototypes dium Sea Gray Ocean Gray Middle Stone cover change camou flage schemes 1942 through re mainder WW II Day fighters home upper sur faces painted Dark Green Ocean Gray undersurfaces Medium Sea Gray Ocean Gray replaced Dark Earth earlier camouflage scheme Day fighters used North African campaigns painted Dark Earth Middle Stone upper surfaces Sky Type S under surfaces Formulas mixing Dark Earth Dark Green Sky Type S given earlier columns new formulas follow Medium Sea Gray three parts H70 Gray part HlO White Ocean Gray seven parts H70 Gray two parts H81 Black part H33 Stin son Green Middle Stone three parts H49 Cub Yellow four parts H70 Gray part Bright Red part HIG White Three-view source Scale modelers have preference unusual rare air craft will find bonanza Bill Hannans new book Scrapbook Scale 3-Views Nostalgia Bill has gathered twelve previously published drawings various sources combined book along several model construction draw ings numerous articles three-views include Bucker Jungmann Nieuport Mono plane Barnwell Monoplane Bleriot Type 25 Canard Sopwith Triplane Cierva C4 Autogiro Farman Moto-Aviette Avionette 451 Moustique Chauviere Gyroptere Gee Bee Z Ascender Most threeviews duplicated elsewhere Price $895 plus $1 postage W C Hannan Graphics PO Box Escondido CA 92025 Pober Pixie photos Documentation color photos Pober Pixie construction arti cle June 1983 MA now available Dale Willoughby Pixie prototype now deep inside new EAA museum Oshkosh month before museum opened Pixie pushed out sunlight last photo session owe thanks Ralph Bufano museum cura tor assistance obtaining photos good fortune Pixie parked just inside shop hangar doors day asked permission move out Thirty-six color photos available Scale Model Research PO Box 685 Orange CA 92666 Ask Foto Paak No 495/36 Price $21 postpaid Cockpit interiors though finelyfinished cockpit cabin isnt really neces sary maximum static scoring contest modelers will spend time effort achieve some semblance realism area Some best interiors have seen Continued page 153 148 Model Aviation FEA TURES * Fun high speed per formance lands like trainer * Strong balsa con struction * Full scale plans mixer included MAGUS 10 DELTA * 3-years design 10 Engine pan flight testing $2695 WePayShipping MI residents add 4% tax Send Certified Check MO Magus Model Aircraft 3518 Laurel Burton Michigan 48529 6/a47eA SPORT WINCH Lightweight 34 lbs 155 kg battery Surprising performance r develops 9 HP Reliable & durable ity components Easy use stable electrodynamic brake help prevent backlashes Complete around parachute 600 meters 90 lb braided nylon line $21500 battery shipping charges included also sell tinest 160 lb braided nylon contest towline $19201600 meters plus shipping Send complete descriptive literature price list 68 Morgan Ave DnburyCT0681O TEL203743-3312 RC Scale/Wischers Continued page 148 airplanes will never flown contest An eye-catching cockpit adds much overall appearance Casual observ ers likely fasten gaze part model would come contact pilot passengers Loads exterior detail gets quick glance detailed cockpit subject prolonged scrutiny Contest judges supposed pay minimum attention interior detailing nonetheless influenced its presence Real leather upholstery seems convincing items make model look though shrunken prototype problem lies finding source leather fine grain light enough add minimal weight best sources have found local stores sell used materials such Goodwill Industries Salvation Army Good leather purposes found ladies purse linings leather-bound books photo albums leather quite thin thickness 010 015 can formed stretched around small radii simulate folds piping high quality upholstery Lighter colors preferred can darkened dying neces sary Seats made balsa wood frames steel tube framework visible structure simulated proper size aluminum tubing tube needs bent should first annealed heating quenching water kitchen stove will supply heat exact temperature isnt critical Cushions padded thin poly foam about /4-in thick tackcemented balsa keep place stretching leather CyA glues will sometimes stain leather Try samle first avoid problem White glue can used safety leather needs held place glue dries particularly leather stretched simulate piped edge fold leather back itself sharply wont true-to-life piping appearance better raw edges leather Wetting leather will permit form ing around mild compound curves water white glue serves make pliable purpose curved parts such arm rests aid forming leather can made thinner sanding back surface Portions balsa framework remain visible should painted matching color preferred paint dope Fastening seats position can done various means have used wood screws glue Current preference dressmakers Velcro fastening material cut /4 X ps matching strips glued seat frame fuse lage structure Wilbold RC-56 glue seems best suited Velcro Some glues will peel off Velcro quite easily because its base dense synthetic fabric advan tage Velcro seats can removed light pull provided strips small too-large area Velcro used seats may disintegrate force required removal Space beneath seats can used RC equipment becomes easily accessible Velcro can also used fastening carpeted floor place Beneath quickly-removable floor have switch charging jack battery Easy servicing adjust ments need removal screws promotes regular maintenance dont skip necessary examination RC equipment because disassembly difficult quite different some ear lier Scale models servos werent seen twice models lifetime have no problems seats coming undone due bad landings en gine vibration have also used Velcro ends seat shoulder harness belts actually hold dummy pilot figure place No amount aerobatics has ever shaken him loose supply various colors widths materials ribbons seat belts unlimited shops sell dressmakers supplies Just swallow V iffUI4IeJ4gJeJJ4 pride walk right buy whats needed Its necessary tell clerk will used model airplane materials use come wide variety sources such yard goods stores artists display shops Buckles belts fash ioned bits aluminum assembled epoxy Aerobatic-type belt buckles vastly different ordinary civil aircraft greatest authenticity visit airport rule sketch pad Pilot figures beginning see pilot figures really look like human beings newest product William M Hawke under label Knights Air material molded vinyl detailed lines texture white surface figure kit form consisting upper body head lower body legs separate arms assembled CyA glue intended painted Poly 5 hobby shop item has natural non-gloss appearance skin clothing Because figure comes sec tions can used either whole person K World War isnt Quite Over Yet EINDECKER EIII Please add $2 postage handi rtg N V residents add 7 $3495Balsa & Plywood Construction 55 Wingspan / 35 45 Engines Morane SAULNIER N Seautfa noeproductonk sOfoir ao es oe ruggec Construction 0 dec ye s 50 5 no history contest wins Easy 5j 0 5oh0tc flignti Please add $2 postage/hasdltng $3795 December 1983 153 AT d ANI3NJ 101 Wing 2 no GIANT RIC SCALE * BOOOttfolly Molded Ftbeglo, Foanlogo I 500 Sq Area o OetoilMnlded Iranaporent Conopy * Rogged Fibergloaa Molded Engine Cowling Coittylete tti $27500 * r Plyonond Firewall Hondwore innioded oLin Sf0 Oh snipping & honoiiti5 * Formed die Landing Gear toga Ony encess retuoOeOf * Rnlled Plan end Inatrontiona5 0 resiOeots 000 7 3-4 Channel R/C Systems bust first pilot produced /3-scale 12-in tall sitting position weighs 15 oz civilian type open-necked shin trousers belt shoes New figures follow 1983 -scale civilian A-scale civilian A-scale WW II Navy Price A-scale pilot kit $1995 plus $2 shipping William M Hawke 7148 Lasting Light Way Columbia MD 21045 Bob Dolly Wiseher S-22 Lapham Peak Rd Delafield WI 53018 RC Soaring/Pruss Continued paae 53 16-in neck screw secures nose cover place whole unit joints waterproof Two five servos actuate flap erons another used rudder flap erons coupled will rudder used flaps set three tasks horizontal stabilizer automatically trimmed compensate initial center-of-lift changes thewing fourth servo horizontal stab fifth both spoilers re leasable towline Instead tow-ring RaIf uses steel ball attached cable ball about /4-in diameter locked up inside fuselage plungertype device during tow Linkages adjusted tow release occurs spoilers still remain closed ball/ socket device fuselage perfectly clean bottom next photo shows cutaway one-piece wing made twopiece molda top half bottom half method construction includes three degrees dihedral wing Note carbon fiber main spar ward spar fiberglass ballast tube Also note exactness fit tubular leading edge flaperon tube hard aluminum used making arrow shafts Hinging means Robart-type pin hinge bottom skin surface top skin surface made up two skins fiberglass sandwiched around material called Rohacell similar skin construc tion Spartakus sandwiched glass around balsa wing no structural spars styrofoam keep top bottom halves separate added carbon fiber Rohacell Ralfs plane give wing calculated strength 40 Gs plane weight 35 kilogramsor wing can withstand over 300-pound load RaIf doesnt seem too concerned about wing flex anymore last photo shows spoilers actu ated ballast tubes loaded threaded retainers knurled knobs used secure ballast slugs finishing touch werent really expecting quarterin square spruce crammed now internal S-shaped piece forward spar pre molded fiberglass piece acting stiffener two holes close wing centerline allow access actuator arms spoil ers flaperon horns inside fuse lage Conventional flap construction hinging wouldnt allow operation twisting flap under heavy airloads type wing construction carried out flaperons During contest York Dieter Pfef ferkorn book Deckers Model volume about -in thick documented calculations used design plane Included construc tion techniques photos construction drawings detailed linkages fit tings book open anyone interested model Whoever said nice guys finish last didnt know Raif Decker continue refer exquisite cre ation RaIfs ModeL like calling Mona Lisa Leonardos Painting Maybe can suggest appropriate name Ill happy pass Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Pylon Racing/Hager Continued oaae 54 manufacturing plane However Bell P-39 Airacobra ing produced limited-production basis TBD Manufacturing Company Rt No 4 166 Pony Drive Smyrna TN 37167 phone 615-459-6845 limited supply Pylon Racing engines planes market always glad see someone else get manufacturing new product Formula fliers years NMPRA Championship Race going held October 22-23 San Luis Obispo CA new Formula Onein order qualify NMPRA Cham pionship Race must first NMPRA member addition must either finish Continued page 156 154 Model Aviation FULL LINE METAL SPECIALISTS Magic Dragon Trainer Fir Fox Pro-Built Price $9995 Engine 25 cu Pro-Built Price $12495 Engine 40 cv Wing Span 55 Radio 3 4 Channels ng Span 52 Radio 4 Channels belsa consttuction Reedy fine send end coverAll balsa construction Reedy tine send cover Control surf aces hinged Hoflco landing geer 5/32 noseControl surfaces hinged Has bolt-on wing end Hoilco Inn gear strut Fitted canopy Instruction booklet end hardding gear ADS wheel pants mounted axels instelled includedFitted canopy Instruction booklet herdwero included RO Send check MO Credit Cards accepted Add $850 UPS shipping 350P51 carton FL ron odd 5% tax ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure ECH A/C 3850 US Hwy 19 No. Palm Harbor Florida 33563813 938-3266
Edition: Model Aviation - 1983/12
Page Numbers: 50, 51, 148, 153, 154
Radio Control SCALE Bob & Dolly Wischer FOAM-CUTTER CONTROL June 1983 column contained photo showing control box hot-wire foam cutting Let ters received inquiring about con tents box whether pur chased item homemade control asembled workshop using stan dard components purchased local sup pliers aluminum enclosure standard electrical components box 4 X 5 x 6 radio parts supply store Inside two transformers first Powerstat variable autotransformer prod uct Superior Electric Co Bristol CT type lOB 120-volt input variable 0-to-l20-volt output isnt safe use its output directly hot wire hecause shock hazard Its output isolated house power lines Touching metal parts foam cutter could hazardous standing con crete floor touching grounded object Any current flow 5 mA greater through human body contracts muscles person unable release grip may lethal heart affected Because hazard output El U Powerstat fed isolation trans- Transformer Co type F-60U has former separate primary secondary numerous outputs ranging 65 26 windings transformer came volts Any transformer approximately local surplus store made Triad 26- 35-volt output load-carrying Scale interiors seats controls upper R leather over balsa frame appropriate seat-edge structure aluminum tubing glued balsa Poly foam under seat leather provides cushion effect Folded leather along seat edges simulates upholstery piping arm rest well cabin linings also leather seats cockpit floor/contrcl assemblies held fuselage bottom Velcro pads pilot L actually held place beltswhich affixed seat Velcro Buckles scraps aluminum epoxied together fellow has through hundreds aerobatic maneuvers never seat belt failure 50 Model Aviation Foam cutters again Bob brought up June 1983 column two cutters use wooden frames small R small foam parts has coil spring tension cutting wire electrical connection does pass through coil spring longer foam wing cores uses 3/16-i n-diameter music wire ends tension cutter capacity least three amperes will usable available local electrical supply houses surplus stores secondary output connected pair insulated screw terminals box top supply hot wire toggle switch used control power Powerstat Doorbell tax train transfiiwmers gen era//v safe use purpose doubt check ohmmeter between put output should no con tinuity advantage type power supply its safety its infinitely-variable output regardless hot-wire length coiled steel tension spring used stretch hot wire make certain connect power supply wire current isnt carried through spring Heating spring wire causes become softened ceases spring cutting wire can nichrome material 012 025 diameter have also used music wire power supply Because output variable kind size wire isnt cricital cutting foam control knob advanced increase heat until clean cut obtained Too much heat will cause wide cut resulting undersized foam parts cutters simple wood frames wire stretched across easy handling keep light weight top box pair standard 120 volt receptacles fed directly Powerstat used other pur poses foam cutting discovered light source photo enlarger $7 miniature lamp could have its normally Continued page 148 Send dollar bill postage handling name address ear 12-pane eataleg ef 2/C sailplanes spert planes spers steIn end CATALOG ~1CO Priees range free 52495 59495 Kiss san Inn sene veor local dealer i& lI b~IpIiFhuJb Pb L4JiIJJhJ L4JJJ R/C SAILPLAflIES T POWER PLANES 9 SPORT SCALE AIRCRAFT 1578 OSAGG STRSET SAN MARCOS CALIFORNIA 92069 SAILPLANES R/C COMPETITION & SPORT SCALE R/C JEMCO SPORT SCALE BALSA COVERED FOAM WING CORES December 1983 51 Bobs infinItely-variable power supply foam cutters L has screw terminal connecting hot wire control knob Powerstat transformer plus two standard outlets used other purposes also ON/OFF switches line cord cutter-wire terminals Inside box R isolation transformer left side connected series Powerstat variable transformer vital safety element keeps house current oft cutter wire reduces possibilty lethal shocki SPORT- R/C FOR BARNSTORMERS AND STUDENTS I RC Aerobatics/Van Putte Continued aqe 145 might necessary little cleanup slots Make small syringe plastic container such small Titebond bottle Hot Stuff short length smallest alu minum tubing can get bottle file end point Mix some 30-minute epoxy heat double boiler setup until epoxy thins noticeably using syringe fill hinge slots epoxy put thin coat outer two-thirds hinge flange Insert hinges clean up epoxy stains dope thinner Allow set repeat process other part hinged surface will find case wood surrounding hinge will yield first Ive never hinge failure 15 years As Ed McMahon would probably say three techniques include pos sible way hinges could installed control surfaces Johnny Carson would say walrus-breath good job covering subject However letters rebuttal suggestions better techniques solicited Ron Van Pune ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 51 short life extended infinitely power reduced 80% secondary advantage light intensity can varied control box compensate variations negative density thin underexposed negatives power reduced creased dense negatives adjustment permits exposure times quite constant making prints Actually since gan using Aculine developer negatives need compensate much reduced also use box control motor speed blower living room fireplace serpentine stove-pipe inside enclosed fireplace carries away heated air means blower Since construction box inexpensive makes good sense find other uses Royal Air Force colors Pettit Paint Co maker Hobbypoxy products has released three color mixes useful mod elers building replicas WW LI British Royal Air Force prototypes dium Sea Gray Ocean Gray Middle Stone cover change camou flage schemes 1942 through re mainder WW II Day fighters home upper sur faces painted Dark Green Ocean Gray undersurfaces Medium Sea Gray Ocean Gray replaced Dark Earth earlier camouflage scheme Day fighters used North African campaigns painted Dark Earth Middle Stone upper surfaces Sky Type S under surfaces Formulas mixing Dark Earth Dark Green Sky Type S given earlier columns new formulas follow Medium Sea Gray three parts H70 Gray part HlO White Ocean Gray seven parts H70 Gray two parts H81 Black part H33 Stin son Green Middle Stone three parts H49 Cub Yellow four parts H70 Gray part Bright Red part HIG White Three-view source Scale modelers have preference unusual rare air craft will find bonanza Bill Hannans new book Scrapbook Scale 3-Views Nostalgia Bill has gathered twelve previously published drawings various sources combined book along several model construction draw ings numerous articles three-views include Bucker Jungmann Nieuport Mono plane Barnwell Monoplane Bleriot Type 25 Canard Sopwith Triplane Cierva C4 Autogiro Farman Moto-Aviette Avionette 451 Moustique Chauviere Gyroptere Gee Bee Z Ascender Most threeviews duplicated elsewhere Price $895 plus $1 postage W C Hannan Graphics PO Box Escondido CA 92025 Pober Pixie photos Documentation color photos Pober Pixie construction arti cle June 1983 MA now available Dale Willoughby Pixie prototype now deep inside new EAA museum Oshkosh month before museum opened Pixie pushed out sunlight last photo session owe thanks Ralph Bufano museum cura tor assistance obtaining photos good fortune Pixie parked just inside shop hangar doors day asked permission move out Thirty-six color photos available Scale Model Research PO Box 685 Orange CA 92666 Ask Foto Paak No 495/36 Price $21 postpaid Cockpit interiors though finelyfinished cockpit cabin isnt really neces sary maximum static scoring contest modelers will spend time effort achieve some semblance realism area Some best interiors have seen Continued page 153 148 Model Aviation FEA TURES * Fun high speed per formance lands like trainer * Strong balsa con struction * Full scale plans mixer included MAGUS 10 DELTA * 3-years design 10 Engine pan flight testing $2695 WePayShipping MI residents add 4% tax Send Certified Check MO Magus Model Aircraft 3518 Laurel Burton Michigan 48529 6/a47eA SPORT WINCH Lightweight 34 lbs 155 kg battery Surprising performance r develops 9 HP Reliable & durable ity components Easy use stable electrodynamic brake help prevent backlashes Complete around parachute 600 meters 90 lb braided nylon line $21500 battery shipping charges included also sell tinest 160 lb braided nylon contest towline $19201600 meters plus shipping Send complete descriptive literature price list 68 Morgan Ave DnburyCT0681O TEL203743-3312 RC Scale/Wischers Continued page 148 airplanes will never flown contest An eye-catching cockpit adds much overall appearance Casual observ ers likely fasten gaze part model would come contact pilot passengers Loads exterior detail gets quick glance detailed cockpit subject prolonged scrutiny Contest judges supposed pay minimum attention interior detailing nonetheless influenced its presence Real leather upholstery seems convincing items make model look though shrunken prototype problem lies finding source leather fine grain light enough add minimal weight best sources have found local stores sell used materials such Goodwill Industries Salvation Army Good leather purposes found ladies purse linings leather-bound books photo albums leather quite thin thickness 010 015 can formed stretched around small radii simulate folds piping high quality upholstery Lighter colors preferred can darkened dying neces sary Seats made balsa wood frames steel tube framework visible structure simulated proper size aluminum tubing tube needs bent should first annealed heating quenching water kitchen stove will supply heat exact temperature isnt critical Cushions padded thin poly foam about /4-in thick tackcemented balsa keep place stretching leather CyA glues will sometimes stain leather Try samle first avoid problem White glue can used safety leather needs held place glue dries particularly leather stretched simulate piped edge fold leather back itself sharply wont true-to-life piping appearance better raw edges leather Wetting leather will permit form ing around mild compound curves water white glue serves make pliable purpose curved parts such arm rests aid forming leather can made thinner sanding back surface Portions balsa framework remain visible should painted matching color preferred paint dope Fastening seats position can done various means have used wood screws glue Current preference dressmakers Velcro fastening material cut /4 X ps matching strips glued seat frame fuse lage structure Wilbold RC-56 glue seems best suited Velcro Some glues will peel off Velcro quite easily because its base dense synthetic fabric advan tage Velcro seats can removed light pull provided strips small too-large area Velcro used seats may disintegrate force required removal Space beneath seats can used RC equipment becomes easily accessible Velcro can also used fastening carpeted floor place Beneath quickly-removable floor have switch charging jack battery Easy servicing adjust ments need removal screws promotes regular maintenance dont skip necessary examination RC equipment because disassembly difficult quite different some ear lier Scale models servos werent seen twice models lifetime have no problems seats coming undone due bad landings en gine vibration have also used Velcro ends seat shoulder harness belts actually hold dummy pilot figure place No amount aerobatics has ever shaken him loose supply various colors widths materials ribbons seat belts unlimited shops sell dressmakers supplies Just swallow V iffUI4IeJ4gJeJJ4 pride walk right buy whats needed Its necessary tell clerk will used model airplane materials use come wide variety sources such yard goods stores artists display shops Buckles belts fash ioned bits aluminum assembled epoxy Aerobatic-type belt buckles vastly different ordinary civil aircraft greatest authenticity visit airport rule sketch pad Pilot figures beginning see pilot figures really look like human beings newest product William M Hawke under label Knights Air material molded vinyl detailed lines texture white surface figure kit form consisting upper body head lower body legs separate arms assembled CyA glue intended painted Poly 5 hobby shop item has natural non-gloss appearance skin clothing Because figure comes sec tions can used either whole person K World War isnt Quite Over Yet EINDECKER EIII Please add $2 postage handi rtg N V residents add 7 $3495Balsa & Plywood Construction 55 Wingspan / 35 45 Engines Morane SAULNIER N Seautfa noeproductonk sOfoir ao es oe ruggec Construction 0 dec ye s 50 5 no history contest wins Easy 5j 0 5oh0tc flignti Please add $2 postage/hasdltng $3795 December 1983 153 AT d ANI3NJ 101 Wing 2 no GIANT RIC SCALE * BOOOttfolly Molded Ftbeglo, Foanlogo I 500 Sq Area o OetoilMnlded Iranaporent Conopy * Rogged Fibergloaa Molded Engine Cowling Coittylete tti $27500 * r Plyonond Firewall Hondwore innioded oLin Sf0 Oh snipping & honoiiti5 * Formed die Landing Gear toga Ony encess retuoOeOf * Rnlled Plan end Inatrontiona5 0 resiOeots 000 7 3-4 Channel R/C Systems bust first pilot produced /3-scale 12-in tall sitting position weighs 15 oz civilian type open-necked shin trousers belt shoes New figures follow 1983 -scale civilian A-scale civilian A-scale WW II Navy Price A-scale pilot kit $1995 plus $2 shipping William M Hawke 7148 Lasting Light Way Columbia MD 21045 Bob Dolly Wiseher S-22 Lapham Peak Rd Delafield WI 53018 RC Soaring/Pruss Continued paae 53 16-in neck screw secures nose cover place whole unit joints waterproof Two five servos actuate flap erons another used rudder flap erons coupled will rudder used flaps set three tasks horizontal stabilizer automatically trimmed compensate initial center-of-lift changes thewing fourth servo horizontal stab fifth both spoilers re leasable towline Instead tow-ring RaIf uses steel ball attached cable ball about /4-in diameter locked up inside fuselage plungertype device during tow Linkages adjusted tow release occurs spoilers still remain closed ball/ socket device fuselage perfectly clean bottom next photo shows cutaway one-piece wing made twopiece molda top half bottom half method construction includes three degrees dihedral wing Note carbon fiber main spar ward spar fiberglass ballast tube Also note exactness fit tubular leading edge flaperon tube hard aluminum used making arrow shafts Hinging means Robart-type pin hinge bottom skin surface top skin surface made up two skins fiberglass sandwiched around material called Rohacell similar skin construc tion Spartakus sandwiched glass around balsa wing no structural spars styrofoam keep top bottom halves separate added carbon fiber Rohacell Ralfs plane give wing calculated strength 40 Gs plane weight 35 kilogramsor wing can withstand over 300-pound load RaIf doesnt seem too concerned about wing flex anymore last photo shows spoilers actu ated ballast tubes loaded threaded retainers knurled knobs used secure ballast slugs finishing touch werent really expecting quarterin square spruce crammed now internal S-shaped piece forward spar pre molded fiberglass piece acting stiffener two holes close wing centerline allow access actuator arms spoil ers flaperon horns inside fuse lage Conventional flap construction hinging wouldnt allow operation twisting flap under heavy airloads type wing construction carried out flaperons During contest York Dieter Pfef ferkorn book Deckers Model volume about -in thick documented calculations used design plane Included construc tion techniques photos construction drawings detailed linkages fit tings book open anyone interested model Whoever said nice guys finish last didnt know Raif Decker continue refer exquisite cre ation RaIfs ModeL like calling Mona Lisa Leonardos Painting Maybe can suggest appropriate name Ill happy pass Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Pylon Racing/Hager Continued oaae 54 manufacturing plane However Bell P-39 Airacobra ing produced limited-production basis TBD Manufacturing Company Rt No 4 166 Pony Drive Smyrna TN 37167 phone 615-459-6845 limited supply Pylon Racing engines planes market always glad see someone else get manufacturing new product Formula fliers years NMPRA Championship Race going held October 22-23 San Luis Obispo CA new Formula Onein order qualify NMPRA Cham pionship Race must first NMPRA member addition must either finish Continued page 156 154 Model Aviation FULL LINE METAL SPECIALISTS Magic Dragon Trainer Fir Fox Pro-Built Price $9995 Engine 25 cu Pro-Built Price $12495 Engine 40 cv Wing Span 55 Radio 3 4 Channels ng Span 52 Radio 4 Channels belsa consttuction Reedy fine send end coverAll balsa construction Reedy tine send cover Control surf aces hinged Hoflco landing geer 5/32 noseControl surfaces hinged Has bolt-on wing end Hoilco Inn gear strut Fitted canopy Instruction booklet end hardding gear ADS wheel pants mounted axels instelled includedFitted canopy Instruction booklet herdwero included RO Send check MO Credit Cards accepted Add $850 UPS shipping 350P51 carton FL ron odd 5% tax ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure ECH A/C 3850 US Hwy 19 No. Palm Harbor Florida 33563813 938-3266
Edition: Model Aviation - 1983/12
Page Numbers: 50, 51, 148, 153, 154
Radio Control SCALE Bob & Dolly Wischer FOAM-CUTTER CONTROL June 1983 column contained photo showing control box hot-wire foam cutting Let ters received inquiring about con tents box whether pur chased item homemade control asembled workshop using stan dard components purchased local sup pliers aluminum enclosure standard electrical components box 4 X 5 x 6 radio parts supply store Inside two transformers first Powerstat variable autotransformer prod uct Superior Electric Co Bristol CT type lOB 120-volt input variable 0-to-l20-volt output isnt safe use its output directly hot wire hecause shock hazard Its output isolated house power lines Touching metal parts foam cutter could hazardous standing con crete floor touching grounded object Any current flow 5 mA greater through human body contracts muscles person unable release grip may lethal heart affected Because hazard output El U Powerstat fed isolation trans- Transformer Co type F-60U has former separate primary secondary numerous outputs ranging 65 26 windings transformer came volts Any transformer approximately local surplus store made Triad 26- 35-volt output load-carrying Scale interiors seats controls upper R leather over balsa frame appropriate seat-edge structure aluminum tubing glued balsa Poly foam under seat leather provides cushion effect Folded leather along seat edges simulates upholstery piping arm rest well cabin linings also leather seats cockpit floor/contrcl assemblies held fuselage bottom Velcro pads pilot L actually held place beltswhich affixed seat Velcro Buckles scraps aluminum epoxied together fellow has through hundreds aerobatic maneuvers never seat belt failure 50 Model Aviation Foam cutters again Bob brought up June 1983 column two cutters use wooden frames small R small foam parts has coil spring tension cutting wire electrical connection does pass through coil spring longer foam wing cores uses 3/16-i n-diameter music wire ends tension cutter capacity least three amperes will usable available local electrical supply houses surplus stores secondary output connected pair insulated screw terminals box top supply hot wire toggle switch used control power Powerstat Doorbell tax train transfiiwmers gen era//v safe use purpose doubt check ohmmeter between put output should no con tinuity advantage type power supply its safety its infinitely-variable output regardless hot-wire length coiled steel tension spring used stretch hot wire make certain connect power supply wire current isnt carried through spring Heating spring wire causes become softened ceases spring cutting wire can nichrome material 012 025 diameter have also used music wire power supply Because output variable kind size wire isnt cricital cutting foam control knob advanced increase heat until clean cut obtained Too much heat will cause wide cut resulting undersized foam parts cutters simple wood frames wire stretched across easy handling keep light weight top box pair standard 120 volt receptacles fed directly Powerstat used other pur poses foam cutting discovered light source photo enlarger $7 miniature lamp could have its normally Continued page 148 Send dollar bill postage handling name address ear 12-pane eataleg ef 2/C sailplanes spert planes spers steIn end CATALOG ~1CO Priees range free 52495 59495 Kiss san Inn sene veor local dealer i& lI b~IpIiFhuJb Pb L4JiIJJhJ L4JJJ R/C SAILPLAflIES T POWER PLANES 9 SPORT SCALE AIRCRAFT 1578 OSAGG STRSET SAN MARCOS CALIFORNIA 92069 SAILPLANES R/C COMPETITION & SPORT SCALE R/C JEMCO SPORT SCALE BALSA COVERED FOAM WING CORES December 1983 51 Bobs infinItely-variable power supply foam cutters L has screw terminal connecting hot wire control knob Powerstat transformer plus two standard outlets used other purposes also ON/OFF switches line cord cutter-wire terminals Inside box R isolation transformer left side connected series Powerstat variable transformer vital safety element keeps house current oft cutter wire reduces possibilty lethal shocki SPORT- R/C FOR BARNSTORMERS AND STUDENTS I RC Aerobatics/Van Putte Continued aqe 145 might necessary little cleanup slots Make small syringe plastic container such small Titebond bottle Hot Stuff short length smallest alu minum tubing can get bottle file end point Mix some 30-minute epoxy heat double boiler setup until epoxy thins noticeably using syringe fill hinge slots epoxy put thin coat outer two-thirds hinge flange Insert hinges clean up epoxy stains dope thinner Allow set repeat process other part hinged surface will find case wood surrounding hinge will yield first Ive never hinge failure 15 years As Ed McMahon would probably say three techniques include pos sible way hinges could installed control surfaces Johnny Carson would say walrus-breath good job covering subject However letters rebuttal suggestions better techniques solicited Ron Van Pune ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 51 short life extended infinitely power reduced 80% secondary advantage light intensity can varied control box compensate variations negative density thin underexposed negatives power reduced creased dense negatives adjustment permits exposure times quite constant making prints Actually since gan using Aculine developer negatives need compensate much reduced also use box control motor speed blower living room fireplace serpentine stove-pipe inside enclosed fireplace carries away heated air means blower Since construction box inexpensive makes good sense find other uses Royal Air Force colors Pettit Paint Co maker Hobbypoxy products has released three color mixes useful mod elers building replicas WW LI British Royal Air Force prototypes dium Sea Gray Ocean Gray Middle Stone cover change camou flage schemes 1942 through re mainder WW II Day fighters home upper sur faces painted Dark Green Ocean Gray undersurfaces Medium Sea Gray Ocean Gray replaced Dark Earth earlier camouflage scheme Day fighters used North African campaigns painted Dark Earth Middle Stone upper surfaces Sky Type S under surfaces Formulas mixing Dark Earth Dark Green Sky Type S given earlier columns new formulas follow Medium Sea Gray three parts H70 Gray part HlO White Ocean Gray seven parts H70 Gray two parts H81 Black part H33 Stin son Green Middle Stone three parts H49 Cub Yellow four parts H70 Gray part Bright Red part HIG White Three-view source Scale modelers have preference unusual rare air craft will find bonanza Bill Hannans new book Scrapbook Scale 3-Views Nostalgia Bill has gathered twelve previously published drawings various sources combined book along several model construction draw ings numerous articles three-views include Bucker Jungmann Nieuport Mono plane Barnwell Monoplane Bleriot Type 25 Canard Sopwith Triplane Cierva C4 Autogiro Farman Moto-Aviette Avionette 451 Moustique Chauviere Gyroptere Gee Bee Z Ascender Most threeviews duplicated elsewhere Price $895 plus $1 postage W C Hannan Graphics PO Box Escondido CA 92025 Pober Pixie photos Documentation color photos Pober Pixie construction arti cle June 1983 MA now available Dale Willoughby Pixie prototype now deep inside new EAA museum Oshkosh month before museum opened Pixie pushed out sunlight last photo session owe thanks Ralph Bufano museum cura tor assistance obtaining photos good fortune Pixie parked just inside shop hangar doors day asked permission move out Thirty-six color photos available Scale Model Research PO Box 685 Orange CA 92666 Ask Foto Paak No 495/36 Price $21 postpaid Cockpit interiors though finelyfinished cockpit cabin isnt really neces sary maximum static scoring contest modelers will spend time effort achieve some semblance realism area Some best interiors have seen Continued page 153 148 Model Aviation FEA TURES * Fun high speed per formance lands like trainer * Strong balsa con struction * Full scale plans mixer included MAGUS 10 DELTA * 3-years design 10 Engine pan flight testing $2695 WePayShipping MI residents add 4% tax Send Certified Check MO Magus Model Aircraft 3518 Laurel Burton Michigan 48529 6/a47eA SPORT WINCH Lightweight 34 lbs 155 kg battery Surprising performance r develops 9 HP Reliable & durable ity components Easy use stable electrodynamic brake help prevent backlashes Complete around parachute 600 meters 90 lb braided nylon line $21500 battery shipping charges included also sell tinest 160 lb braided nylon contest towline $19201600 meters plus shipping Send complete descriptive literature price list 68 Morgan Ave DnburyCT0681O TEL203743-3312 RC Scale/Wischers Continued page 148 airplanes will never flown contest An eye-catching cockpit adds much overall appearance Casual observ ers likely fasten gaze part model would come contact pilot passengers Loads exterior detail gets quick glance detailed cockpit subject prolonged scrutiny Contest judges supposed pay minimum attention interior detailing nonetheless influenced its presence Real leather upholstery seems convincing items make model look though shrunken prototype problem lies finding source leather fine grain light enough add minimal weight best sources have found local stores sell used materials such Goodwill Industries Salvation Army Good leather purposes found ladies purse linings leather-bound books photo albums leather quite thin thickness 010 015 can formed stretched around small radii simulate folds piping high quality upholstery Lighter colors preferred can darkened dying neces sary Seats made balsa wood frames steel tube framework visible structure simulated proper size aluminum tubing tube needs bent should first annealed heating quenching water kitchen stove will supply heat exact temperature isnt critical Cushions padded thin poly foam about /4-in thick tackcemented balsa keep place stretching leather CyA glues will sometimes stain leather Try samle first avoid problem White glue can used safety leather needs held place glue dries particularly leather stretched simulate piped edge fold leather back itself sharply wont true-to-life piping appearance better raw edges leather Wetting leather will permit form ing around mild compound curves water white glue serves make pliable purpose curved parts such arm rests aid forming leather can made thinner sanding back surface Portions balsa framework remain visible should painted matching color preferred paint dope Fastening seats position can done various means have used wood screws glue Current preference dressmakers Velcro fastening material cut /4 X ps matching strips glued seat frame fuse lage structure Wilbold RC-56 glue seems best suited Velcro Some glues will peel off Velcro quite easily because its base dense synthetic fabric advan tage Velcro seats can removed light pull provided strips small too-large area Velcro used seats may disintegrate force required removal Space beneath seats can used RC equipment becomes easily accessible Velcro can also used fastening carpeted floor place Beneath quickly-removable floor have switch charging jack battery Easy servicing adjust ments need removal screws promotes regular maintenance dont skip necessary examination RC equipment because disassembly difficult quite different some ear lier Scale models servos werent seen twice models lifetime have no problems seats coming undone due bad landings en gine vibration have also used Velcro ends seat shoulder harness belts actually hold dummy pilot figure place No amount aerobatics has ever shaken him loose supply various colors widths materials ribbons seat belts unlimited shops sell dressmakers supplies Just swallow V iffUI4IeJ4gJeJJ4 pride walk right buy whats needed Its necessary tell clerk will used model airplane materials use come wide variety sources such yard goods stores artists display shops Buckles belts fash ioned bits aluminum assembled epoxy Aerobatic-type belt buckles vastly different ordinary civil aircraft greatest authenticity visit airport rule sketch pad Pilot figures beginning see pilot figures really look like human beings newest product William M Hawke under label Knights Air material molded vinyl detailed lines texture white surface figure kit form consisting upper body head lower body legs separate arms assembled CyA glue intended painted Poly 5 hobby shop item has natural non-gloss appearance skin clothing Because figure comes sec tions can used either whole person K World War isnt Quite Over Yet EINDECKER EIII Please add $2 postage handi rtg N V residents add 7 $3495Balsa & Plywood Construction 55 Wingspan / 35 45 Engines Morane SAULNIER N Seautfa noeproductonk sOfoir ao es oe ruggec Construction 0 dec ye s 50 5 no history contest wins Easy 5j 0 5oh0tc flignti Please add $2 postage/hasdltng $3795 December 1983 153 AT d ANI3NJ 101 Wing 2 no GIANT RIC SCALE * BOOOttfolly Molded Ftbeglo, Foanlogo I 500 Sq Area o OetoilMnlded Iranaporent Conopy * Rogged Fibergloaa Molded Engine Cowling Coittylete tti $27500 * r Plyonond Firewall Hondwore innioded oLin Sf0 Oh snipping & honoiiti5 * Formed die Landing Gear toga Ony encess retuoOeOf * Rnlled Plan end Inatrontiona5 0 resiOeots 000 7 3-4 Channel R/C Systems bust first pilot produced /3-scale 12-in tall sitting position weighs 15 oz civilian type open-necked shin trousers belt shoes New figures follow 1983 -scale civilian A-scale civilian A-scale WW II Navy Price A-scale pilot kit $1995 plus $2 shipping William M Hawke 7148 Lasting Light Way Columbia MD 21045 Bob Dolly Wiseher S-22 Lapham Peak Rd Delafield WI 53018 RC Soaring/Pruss Continued paae 53 16-in neck screw secures nose cover place whole unit joints waterproof Two five servos actuate flap erons another used rudder flap erons coupled will rudder used flaps set three tasks horizontal stabilizer automatically trimmed compensate initial center-of-lift changes thewing fourth servo horizontal stab fifth both spoilers re leasable towline Instead tow-ring RaIf uses steel ball attached cable ball about /4-in diameter locked up inside fuselage plungertype device during tow Linkages adjusted tow release occurs spoilers still remain closed ball/ socket device fuselage perfectly clean bottom next photo shows cutaway one-piece wing made twopiece molda top half bottom half method construction includes three degrees dihedral wing Note carbon fiber main spar ward spar fiberglass ballast tube Also note exactness fit tubular leading edge flaperon tube hard aluminum used making arrow shafts Hinging means Robart-type pin hinge bottom skin surface top skin surface made up two skins fiberglass sandwiched around material called Rohacell similar skin construc tion Spartakus sandwiched glass around balsa wing no structural spars styrofoam keep top bottom halves separate added carbon fiber Rohacell Ralfs plane give wing calculated strength 40 Gs plane weight 35 kilogramsor wing can withstand over 300-pound load RaIf doesnt seem too concerned about wing flex anymore last photo shows spoilers actu ated ballast tubes loaded threaded retainers knurled knobs used secure ballast slugs finishing touch werent really expecting quarterin square spruce crammed now internal S-shaped piece forward spar pre molded fiberglass piece acting stiffener two holes close wing centerline allow access actuator arms spoil ers flaperon horns inside fuse lage Conventional flap construction hinging wouldnt allow operation twisting flap under heavy airloads type wing construction carried out flaperons During contest York Dieter Pfef ferkorn book Deckers Model volume about -in thick documented calculations used design plane Included construc tion techniques photos construction drawings detailed linkages fit tings book open anyone interested model Whoever said nice guys finish last didnt know Raif Decker continue refer exquisite cre ation RaIfs ModeL like calling Mona Lisa Leonardos Painting Maybe can suggest appropriate name Ill happy pass Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Pylon Racing/Hager Continued oaae 54 manufacturing plane However Bell P-39 Airacobra ing produced limited-production basis TBD Manufacturing Company Rt No 4 166 Pony Drive Smyrna TN 37167 phone 615-459-6845 limited supply Pylon Racing engines planes market always glad see someone else get manufacturing new product Formula fliers years NMPRA Championship Race going held October 22-23 San Luis Obispo CA new Formula Onein order qualify NMPRA Cham pionship Race must first NMPRA member addition must either finish Continued page 156 154 Model Aviation FULL LINE METAL SPECIALISTS Magic Dragon Trainer Fir Fox Pro-Built Price $9995 Engine 25 cu Pro-Built Price $12495 Engine 40 cv Wing Span 55 Radio 3 4 Channels ng Span 52 Radio 4 Channels belsa consttuction Reedy fine send end coverAll balsa construction Reedy tine send cover Control surf aces hinged Hoflco landing geer 5/32 noseControl surfaces hinged Has bolt-on wing end Hoilco Inn gear strut Fitted canopy Instruction booklet end hardding gear ADS wheel pants mounted axels instelled includedFitted canopy Instruction booklet herdwero included RO Send check MO Credit Cards accepted Add $850 UPS shipping 350P51 carton FL ron odd 5% tax ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure ECH A/C 3850 US Hwy 19 No. Palm Harbor Florida 33563813 938-3266
Edition: Model Aviation - 1983/12
Page Numbers: 50, 51, 148, 153, 154
Radio Control SCALE Bob & Dolly Wischer FOAM-CUTTER CONTROL June 1983 column contained photo showing control box hot-wire foam cutting Let ters received inquiring about con tents box whether pur chased item homemade control asembled workshop using stan dard components purchased local sup pliers aluminum enclosure standard electrical components box 4 X 5 x 6 radio parts supply store Inside two transformers first Powerstat variable autotransformer prod uct Superior Electric Co Bristol CT type lOB 120-volt input variable 0-to-l20-volt output isnt safe use its output directly hot wire hecause shock hazard Its output isolated house power lines Touching metal parts foam cutter could hazardous standing con crete floor touching grounded object Any current flow 5 mA greater through human body contracts muscles person unable release grip may lethal heart affected Because hazard output El U Powerstat fed isolation trans- Transformer Co type F-60U has former separate primary secondary numerous outputs ranging 65 26 windings transformer came volts Any transformer approximately local surplus store made Triad 26- 35-volt output load-carrying Scale interiors seats controls upper R leather over balsa frame appropriate seat-edge structure aluminum tubing glued balsa Poly foam under seat leather provides cushion effect Folded leather along seat edges simulates upholstery piping arm rest well cabin linings also leather seats cockpit floor/contrcl assemblies held fuselage bottom Velcro pads pilot L actually held place beltswhich affixed seat Velcro Buckles scraps aluminum epoxied together fellow has through hundreds aerobatic maneuvers never seat belt failure 50 Model Aviation Foam cutters again Bob brought up June 1983 column two cutters use wooden frames small R small foam parts has coil spring tension cutting wire electrical connection does pass through coil spring longer foam wing cores uses 3/16-i n-diameter music wire ends tension cutter capacity least three amperes will usable available local electrical supply houses surplus stores secondary output connected pair insulated screw terminals box top supply hot wire toggle switch used control power Powerstat Doorbell tax train transfiiwmers gen era//v safe use purpose doubt check ohmmeter between put output should no con tinuity advantage type power supply its safety its infinitely-variable output regardless hot-wire length coiled steel tension spring used stretch hot wire make certain connect power supply wire current isnt carried through spring Heating spring wire causes become softened ceases spring cutting wire can nichrome material 012 025 diameter have also used music wire power supply Because output variable kind size wire isnt cricital cutting foam control knob advanced increase heat until clean cut obtained Too much heat will cause wide cut resulting undersized foam parts cutters simple wood frames wire stretched across easy handling keep light weight top box pair standard 120 volt receptacles fed directly Powerstat used other pur poses foam cutting discovered light source photo enlarger $7 miniature lamp could have its normally Continued page 148 Send dollar bill postage handling name address ear 12-pane eataleg ef 2/C sailplanes spert planes spers steIn end CATALOG ~1CO Priees range free 52495 59495 Kiss san Inn sene veor local dealer i& lI b~IpIiFhuJb Pb L4JiIJJhJ L4JJJ R/C SAILPLAflIES T POWER PLANES 9 SPORT SCALE AIRCRAFT 1578 OSAGG STRSET SAN MARCOS CALIFORNIA 92069 SAILPLANES R/C COMPETITION & SPORT SCALE R/C JEMCO SPORT SCALE BALSA COVERED FOAM WING CORES December 1983 51 Bobs infinItely-variable power supply foam cutters L has screw terminal connecting hot wire control knob Powerstat transformer plus two standard outlets used other purposes also ON/OFF switches line cord cutter-wire terminals Inside box R isolation transformer left side connected series Powerstat variable transformer vital safety element keeps house current oft cutter wire reduces possibilty lethal shocki SPORT- R/C FOR BARNSTORMERS AND STUDENTS I RC Aerobatics/Van Putte Continued aqe 145 might necessary little cleanup slots Make small syringe plastic container such small Titebond bottle Hot Stuff short length smallest alu minum tubing can get bottle file end point Mix some 30-minute epoxy heat double boiler setup until epoxy thins noticeably using syringe fill hinge slots epoxy put thin coat outer two-thirds hinge flange Insert hinges clean up epoxy stains dope thinner Allow set repeat process other part hinged surface will find case wood surrounding hinge will yield first Ive never hinge failure 15 years As Ed McMahon would probably say three techniques include pos sible way hinges could installed control surfaces Johnny Carson would say walrus-breath good job covering subject However letters rebuttal suggestions better techniques solicited Ron Van Pune ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 51 short life extended infinitely power reduced 80% secondary advantage light intensity can varied control box compensate variations negative density thin underexposed negatives power reduced creased dense negatives adjustment permits exposure times quite constant making prints Actually since gan using Aculine developer negatives need compensate much reduced also use box control motor speed blower living room fireplace serpentine stove-pipe inside enclosed fireplace carries away heated air means blower Since construction box inexpensive makes good sense find other uses Royal Air Force colors Pettit Paint Co maker Hobbypoxy products has released three color mixes useful mod elers building replicas WW LI British Royal Air Force prototypes dium Sea Gray Ocean Gray Middle Stone cover change camou flage schemes 1942 through re mainder WW II Day fighters home upper sur faces painted Dark Green Ocean Gray undersurfaces Medium Sea Gray Ocean Gray replaced Dark Earth earlier camouflage scheme Day fighters used North African campaigns painted Dark Earth Middle Stone upper surfaces Sky Type S under surfaces Formulas mixing Dark Earth Dark Green Sky Type S given earlier columns new formulas follow Medium Sea Gray three parts H70 Gray part HlO White Ocean Gray seven parts H70 Gray two parts H81 Black part H33 Stin son Green Middle Stone three parts H49 Cub Yellow four parts H70 Gray part Bright Red part HIG White Three-view source Scale modelers have preference unusual rare air craft will find bonanza Bill Hannans new book Scrapbook Scale 3-Views Nostalgia Bill has gathered twelve previously published drawings various sources combined book along several model construction draw ings numerous articles three-views include Bucker Jungmann Nieuport Mono plane Barnwell Monoplane Bleriot Type 25 Canard Sopwith Triplane Cierva C4 Autogiro Farman Moto-Aviette Avionette 451 Moustique Chauviere Gyroptere Gee Bee Z Ascender Most threeviews duplicated elsewhere Price $895 plus $1 postage W C Hannan Graphics PO Box Escondido CA 92025 Pober Pixie photos Documentation color photos Pober Pixie construction arti cle June 1983 MA now available Dale Willoughby Pixie prototype now deep inside new EAA museum Oshkosh month before museum opened Pixie pushed out sunlight last photo session owe thanks Ralph Bufano museum cura tor assistance obtaining photos good fortune Pixie parked just inside shop hangar doors day asked permission move out Thirty-six color photos available Scale Model Research PO Box 685 Orange CA 92666 Ask Foto Paak No 495/36 Price $21 postpaid Cockpit interiors though finelyfinished cockpit cabin isnt really neces sary maximum static scoring contest modelers will spend time effort achieve some semblance realism area Some best interiors have seen Continued page 153 148 Model Aviation FEA TURES * Fun high speed per formance lands like trainer * Strong balsa con struction * Full scale plans mixer included MAGUS 10 DELTA * 3-years design 10 Engine pan flight testing $2695 WePayShipping MI residents add 4% tax Send Certified Check MO Magus Model Aircraft 3518 Laurel Burton Michigan 48529 6/a47eA SPORT WINCH Lightweight 34 lbs 155 kg battery Surprising performance r develops 9 HP Reliable & durable ity components Easy use stable electrodynamic brake help prevent backlashes Complete around parachute 600 meters 90 lb braided nylon line $21500 battery shipping charges included also sell tinest 160 lb braided nylon contest towline $19201600 meters plus shipping Send complete descriptive literature price list 68 Morgan Ave DnburyCT0681O TEL203743-3312 RC Scale/Wischers Continued page 148 airplanes will never flown contest An eye-catching cockpit adds much overall appearance Casual observ ers likely fasten gaze part model would come contact pilot passengers Loads exterior detail gets quick glance detailed cockpit subject prolonged scrutiny Contest judges supposed pay minimum attention interior detailing nonetheless influenced its presence Real leather upholstery seems convincing items make model look though shrunken prototype problem lies finding source leather fine grain light enough add minimal weight best sources have found local stores sell used materials such Goodwill Industries Salvation Army Good leather purposes found ladies purse linings leather-bound books photo albums leather quite thin thickness 010 015 can formed stretched around small radii simulate folds piping high quality upholstery Lighter colors preferred can darkened dying neces sary Seats made balsa wood frames steel tube framework visible structure simulated proper size aluminum tubing tube needs bent should first annealed heating quenching water kitchen stove will supply heat exact temperature isnt critical Cushions padded thin poly foam about /4-in thick tackcemented balsa keep place stretching leather CyA glues will sometimes stain leather Try samle first avoid problem White glue can used safety leather needs held place glue dries particularly leather stretched simulate piped edge fold leather back itself sharply wont true-to-life piping appearance better raw edges leather Wetting leather will permit form ing around mild compound curves water white glue serves make pliable purpose curved parts such arm rests aid forming leather can made thinner sanding back surface Portions balsa framework remain visible should painted matching color preferred paint dope Fastening seats position can done various means have used wood screws glue Current preference dressmakers Velcro fastening material cut /4 X ps matching strips glued seat frame fuse lage structure Wilbold RC-56 glue seems best suited Velcro Some glues will peel off Velcro quite easily because its base dense synthetic fabric advan tage Velcro seats can removed light pull provided strips small too-large area Velcro used seats may disintegrate force required removal Space beneath seats can used RC equipment becomes easily accessible Velcro can also used fastening carpeted floor place Beneath quickly-removable floor have switch charging jack battery Easy servicing adjust ments need removal screws promotes regular maintenance dont skip necessary examination RC equipment because disassembly difficult quite different some ear lier Scale models servos werent seen twice models lifetime have no problems seats coming undone due bad landings en gine vibration have also used Velcro ends seat shoulder harness belts actually hold dummy pilot figure place No amount aerobatics has ever shaken him loose supply various colors widths materials ribbons seat belts unlimited shops sell dressmakers supplies Just swallow V iffUI4IeJ4gJeJJ4 pride walk right buy whats needed Its necessary tell clerk will used model airplane materials use come wide variety sources such yard goods stores artists display shops Buckles belts fash ioned bits aluminum assembled epoxy Aerobatic-type belt buckles vastly different ordinary civil aircraft greatest authenticity visit airport rule sketch pad Pilot figures beginning see pilot figures really look like human beings newest product William M Hawke under label Knights Air material molded vinyl detailed lines texture white surface figure kit form consisting upper body head lower body legs separate arms assembled CyA glue intended painted Poly 5 hobby shop item has natural non-gloss appearance skin clothing Because figure comes sec tions can used either whole person K World War isnt Quite Over Yet EINDECKER EIII Please add $2 postage handi rtg N V residents add 7 $3495Balsa & Plywood Construction 55 Wingspan / 35 45 Engines Morane SAULNIER N Seautfa noeproductonk sOfoir ao es oe ruggec Construction 0 dec ye s 50 5 no history contest wins Easy 5j 0 5oh0tc flignti Please add $2 postage/hasdltng $3795 December 1983 153 AT d ANI3NJ 101 Wing 2 no GIANT RIC SCALE * BOOOttfolly Molded Ftbeglo, Foanlogo I 500 Sq Area o OetoilMnlded Iranaporent Conopy * Rogged Fibergloaa Molded Engine Cowling Coittylete tti $27500 * r Plyonond Firewall Hondwore innioded oLin Sf0 Oh snipping & honoiiti5 * Formed die Landing Gear toga Ony encess retuoOeOf * Rnlled Plan end Inatrontiona5 0 resiOeots 000 7 3-4 Channel R/C Systems bust first pilot produced /3-scale 12-in tall sitting position weighs 15 oz civilian type open-necked shin trousers belt shoes New figures follow 1983 -scale civilian A-scale civilian A-scale WW II Navy Price A-scale pilot kit $1995 plus $2 shipping William M Hawke 7148 Lasting Light Way Columbia MD 21045 Bob Dolly Wiseher S-22 Lapham Peak Rd Delafield WI 53018 RC Soaring/Pruss Continued paae 53 16-in neck screw secures nose cover place whole unit joints waterproof Two five servos actuate flap erons another used rudder flap erons coupled will rudder used flaps set three tasks horizontal stabilizer automatically trimmed compensate initial center-of-lift changes thewing fourth servo horizontal stab fifth both spoilers re leasable towline Instead tow-ring RaIf uses steel ball attached cable ball about /4-in diameter locked up inside fuselage plungertype device during tow Linkages adjusted tow release occurs spoilers still remain closed ball/ socket device fuselage perfectly clean bottom next photo shows cutaway one-piece wing made twopiece molda top half bottom half method construction includes three degrees dihedral wing Note carbon fiber main spar ward spar fiberglass ballast tube Also note exactness fit tubular leading edge flaperon tube hard aluminum used making arrow shafts Hinging means Robart-type pin hinge bottom skin surface top skin surface made up two skins fiberglass sandwiched around material called Rohacell similar skin construc tion Spartakus sandwiched glass around balsa wing no structural spars styrofoam keep top bottom halves separate added carbon fiber Rohacell Ralfs plane give wing calculated strength 40 Gs plane weight 35 kilogramsor wing can withstand over 300-pound load RaIf doesnt seem too concerned about wing flex anymore last photo shows spoilers actu ated ballast tubes loaded threaded retainers knurled knobs used secure ballast slugs finishing touch werent really expecting quarterin square spruce crammed now internal S-shaped piece forward spar pre molded fiberglass piece acting stiffener two holes close wing centerline allow access actuator arms spoil ers flaperon horns inside fuse lage Conventional flap construction hinging wouldnt allow operation twisting flap under heavy airloads type wing construction carried out flaperons During contest York Dieter Pfef ferkorn book Deckers Model volume about -in thick documented calculations used design plane Included construc tion techniques photos construction drawings detailed linkages fit tings book open anyone interested model Whoever said nice guys finish last didnt know Raif Decker continue refer exquisite cre ation RaIfs ModeL like calling Mona Lisa Leonardos Painting Maybe can suggest appropriate name Ill happy pass Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Pylon Racing/Hager Continued oaae 54 manufacturing plane However Bell P-39 Airacobra ing produced limited-production basis TBD Manufacturing Company Rt No 4 166 Pony Drive Smyrna TN 37167 phone 615-459-6845 limited supply Pylon Racing engines planes market always glad see someone else get manufacturing new product Formula fliers years NMPRA Championship Race going held October 22-23 San Luis Obispo CA new Formula Onein order qualify NMPRA Cham pionship Race must first NMPRA member addition must either finish Continued page 156 154 Model Aviation FULL LINE METAL SPECIALISTS Magic Dragon Trainer Fir Fox Pro-Built Price $9995 Engine 25 cu Pro-Built Price $12495 Engine 40 cv Wing Span 55 Radio 3 4 Channels ng Span 52 Radio 4 Channels belsa consttuction Reedy fine send end coverAll balsa construction Reedy tine send cover Control surf aces hinged Hoflco landing geer 5/32 noseControl surfaces hinged Has bolt-on wing end Hoilco Inn gear strut Fitted canopy Instruction booklet end hardding gear ADS wheel pants mounted axels instelled includedFitted canopy Instruction booklet herdwero included RO Send check MO Credit Cards accepted Add $850 UPS shipping 350P51 carton FL ron odd 5% tax ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure ECH A/C 3850 US Hwy 19 No. Palm Harbor Florida 33563813 938-3266
Edition: Model Aviation - 1983/12
Page Numbers: 50, 51, 148, 153, 154
Radio Control SCALE Bob & Dolly Wischer FOAM-CUTTER CONTROL June 1983 column contained photo showing control box hot-wire foam cutting Let ters received inquiring about con tents box whether pur chased item homemade control asembled workshop using stan dard components purchased local sup pliers aluminum enclosure standard electrical components box 4 X 5 x 6 radio parts supply store Inside two transformers first Powerstat variable autotransformer prod uct Superior Electric Co Bristol CT type lOB 120-volt input variable 0-to-l20-volt output isnt safe use its output directly hot wire hecause shock hazard Its output isolated house power lines Touching metal parts foam cutter could hazardous standing con crete floor touching grounded object Any current flow 5 mA greater through human body contracts muscles person unable release grip may lethal heart affected Because hazard output El U Powerstat fed isolation trans- Transformer Co type F-60U has former separate primary secondary numerous outputs ranging 65 26 windings transformer came volts Any transformer approximately local surplus store made Triad 26- 35-volt output load-carrying Scale interiors seats controls upper R leather over balsa frame appropriate seat-edge structure aluminum tubing glued balsa Poly foam under seat leather provides cushion effect Folded leather along seat edges simulates upholstery piping arm rest well cabin linings also leather seats cockpit floor/contrcl assemblies held fuselage bottom Velcro pads pilot L actually held place beltswhich affixed seat Velcro Buckles scraps aluminum epoxied together fellow has through hundreds aerobatic maneuvers never seat belt failure 50 Model Aviation Foam cutters again Bob brought up June 1983 column two cutters use wooden frames small R small foam parts has coil spring tension cutting wire electrical connection does pass through coil spring longer foam wing cores uses 3/16-i n-diameter music wire ends tension cutter capacity least three amperes will usable available local electrical supply houses surplus stores secondary output connected pair insulated screw terminals box top supply hot wire toggle switch used control power Powerstat Doorbell tax train transfiiwmers gen era//v safe use purpose doubt check ohmmeter between put output should no con tinuity advantage type power supply its safety its infinitely-variable output regardless hot-wire length coiled steel tension spring used stretch hot wire make certain connect power supply wire current isnt carried through spring Heating spring wire causes become softened ceases spring cutting wire can nichrome material 012 025 diameter have also used music wire power supply Because output variable kind size wire isnt cricital cutting foam control knob advanced increase heat until clean cut obtained Too much heat will cause wide cut resulting undersized foam parts cutters simple wood frames wire stretched across easy handling keep light weight top box pair standard 120 volt receptacles fed directly Powerstat used other pur poses foam cutting discovered light source photo enlarger $7 miniature lamp could have its normally Continued page 148 Send dollar bill postage handling name address ear 12-pane eataleg ef 2/C sailplanes spert planes spers steIn end CATALOG ~1CO Priees range free 52495 59495 Kiss san Inn sene veor local dealer i& lI b~IpIiFhuJb Pb L4JiIJJhJ L4JJJ R/C SAILPLAflIES T POWER PLANES 9 SPORT SCALE AIRCRAFT 1578 OSAGG STRSET SAN MARCOS CALIFORNIA 92069 SAILPLANES R/C COMPETITION & SPORT SCALE R/C JEMCO SPORT SCALE BALSA COVERED FOAM WING CORES December 1983 51 Bobs infinItely-variable power supply foam cutters L has screw terminal connecting hot wire control knob Powerstat transformer plus two standard outlets used other purposes also ON/OFF switches line cord cutter-wire terminals Inside box R isolation transformer left side connected series Powerstat variable transformer vital safety element keeps house current oft cutter wire reduces possibilty lethal shocki SPORT- R/C FOR BARNSTORMERS AND STUDENTS I RC Aerobatics/Van Putte Continued aqe 145 might necessary little cleanup slots Make small syringe plastic container such small Titebond bottle Hot Stuff short length smallest alu minum tubing can get bottle file end point Mix some 30-minute epoxy heat double boiler setup until epoxy thins noticeably using syringe fill hinge slots epoxy put thin coat outer two-thirds hinge flange Insert hinges clean up epoxy stains dope thinner Allow set repeat process other part hinged surface will find case wood surrounding hinge will yield first Ive never hinge failure 15 years As Ed McMahon would probably say three techniques include pos sible way hinges could installed control surfaces Johnny Carson would say walrus-breath good job covering subject However letters rebuttal suggestions better techniques solicited Ron Van Pune ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 51 short life extended infinitely power reduced 80% secondary advantage light intensity can varied control box compensate variations negative density thin underexposed negatives power reduced creased dense negatives adjustment permits exposure times quite constant making prints Actually since gan using Aculine developer negatives need compensate much reduced also use box control motor speed blower living room fireplace serpentine stove-pipe inside enclosed fireplace carries away heated air means blower Since construction box inexpensive makes good sense find other uses Royal Air Force colors Pettit Paint Co maker Hobbypoxy products has released three color mixes useful mod elers building replicas WW LI British Royal Air Force prototypes dium Sea Gray Ocean Gray Middle Stone cover change camou flage schemes 1942 through re mainder WW II Day fighters home upper sur faces painted Dark Green Ocean Gray undersurfaces Medium Sea Gray Ocean Gray replaced Dark Earth earlier camouflage scheme Day fighters used North African campaigns painted Dark Earth Middle Stone upper surfaces Sky Type S under surfaces Formulas mixing Dark Earth Dark Green Sky Type S given earlier columns new formulas follow Medium Sea Gray three parts H70 Gray part HlO White Ocean Gray seven parts H70 Gray two parts H81 Black part H33 Stin son Green Middle Stone three parts H49 Cub Yellow four parts H70 Gray part Bright Red part HIG White Three-view source Scale modelers have preference unusual rare air craft will find bonanza Bill Hannans new book Scrapbook Scale 3-Views Nostalgia Bill has gathered twelve previously published drawings various sources combined book along several model construction draw ings numerous articles three-views include Bucker Jungmann Nieuport Mono plane Barnwell Monoplane Bleriot Type 25 Canard Sopwith Triplane Cierva C4 Autogiro Farman Moto-Aviette Avionette 451 Moustique Chauviere Gyroptere Gee Bee Z Ascender Most threeviews duplicated elsewhere Price $895 plus $1 postage W C Hannan Graphics PO Box Escondido CA 92025 Pober Pixie photos Documentation color photos Pober Pixie construction arti cle June 1983 MA now available Dale Willoughby Pixie prototype now deep inside new EAA museum Oshkosh month before museum opened Pixie pushed out sunlight last photo session owe thanks Ralph Bufano museum cura tor assistance obtaining photos good fortune Pixie parked just inside shop hangar doors day asked permission move out Thirty-six color photos available Scale Model Research PO Box 685 Orange CA 92666 Ask Foto Paak No 495/36 Price $21 postpaid Cockpit interiors though finelyfinished cockpit cabin isnt really neces sary maximum static scoring contest modelers will spend time effort achieve some semblance realism area Some best interiors have seen Continued page 153 148 Model Aviation FEA TURES * Fun high speed per formance lands like trainer * Strong balsa con struction * Full scale plans mixer included MAGUS 10 DELTA * 3-years design 10 Engine pan flight testing $2695 WePayShipping MI residents add 4% tax Send Certified Check MO Magus Model Aircraft 3518 Laurel Burton Michigan 48529 6/a47eA SPORT WINCH Lightweight 34 lbs 155 kg battery Surprising performance r develops 9 HP Reliable & durable ity components Easy use stable electrodynamic brake help prevent backlashes Complete around parachute 600 meters 90 lb braided nylon line $21500 battery shipping charges included also sell tinest 160 lb braided nylon contest towline $19201600 meters plus shipping Send complete descriptive literature price list 68 Morgan Ave DnburyCT0681O TEL203743-3312 RC Scale/Wischers Continued page 148 airplanes will never flown contest An eye-catching cockpit adds much overall appearance Casual observ ers likely fasten gaze part model would come contact pilot passengers Loads exterior detail gets quick glance detailed cockpit subject prolonged scrutiny Contest judges supposed pay minimum attention interior detailing nonetheless influenced its presence Real leather upholstery seems convincing items make model look though shrunken prototype problem lies finding source leather fine grain light enough add minimal weight best sources have found local stores sell used materials such Goodwill Industries Salvation Army Good leather purposes found ladies purse linings leather-bound books photo albums leather quite thin thickness 010 015 can formed stretched around small radii simulate folds piping high quality upholstery Lighter colors preferred can darkened dying neces sary Seats made balsa wood frames steel tube framework visible structure simulated proper size aluminum tubing tube needs bent should first annealed heating quenching water kitchen stove will supply heat exact temperature isnt critical Cushions padded thin poly foam about /4-in thick tackcemented balsa keep place stretching leather CyA glues will sometimes stain leather Try samle first avoid problem White glue can used safety leather needs held place glue dries particularly leather stretched simulate piped edge fold leather back itself sharply wont true-to-life piping appearance better raw edges leather Wetting leather will permit form ing around mild compound curves water white glue serves make pliable purpose curved parts such arm rests aid forming leather can made thinner sanding back surface Portions balsa framework remain visible should painted matching color preferred paint dope Fastening seats position can done various means have used wood screws glue Current preference dressmakers Velcro fastening material cut /4 X ps matching strips glued seat frame fuse lage structure Wilbold RC-56 glue seems best suited Velcro Some glues will peel off Velcro quite easily because its base dense synthetic fabric advan tage Velcro seats can removed light pull provided strips small too-large area Velcro used seats may disintegrate force required removal Space beneath seats can used RC equipment becomes easily accessible Velcro can also used fastening carpeted floor place Beneath quickly-removable floor have switch charging jack battery Easy servicing adjust ments need removal screws promotes regular maintenance dont skip necessary examination RC equipment because disassembly difficult quite different some ear lier Scale models servos werent seen twice models lifetime have no problems seats coming undone due bad landings en gine vibration have also used Velcro ends seat shoulder harness belts actually hold dummy pilot figure place No amount aerobatics has ever shaken him loose supply various colors widths materials ribbons seat belts unlimited shops sell dressmakers supplies Just swallow V iffUI4IeJ4gJeJJ4 pride walk right buy whats needed Its necessary tell clerk will used model airplane materials use come wide variety sources such yard goods stores artists display shops Buckles belts fash ioned bits aluminum assembled epoxy Aerobatic-type belt buckles vastly different ordinary civil aircraft greatest authenticity visit airport rule sketch pad Pilot figures beginning see pilot figures really look like human beings newest product William M Hawke under label Knights Air material molded vinyl detailed lines texture white surface figure kit form consisting upper body head lower body legs separate arms assembled CyA glue intended painted Poly 5 hobby shop item has natural non-gloss appearance skin clothing Because figure comes sec tions can used either whole person K World War isnt Quite Over Yet EINDECKER EIII Please add $2 postage handi rtg N V residents add 7 $3495Balsa & Plywood Construction 55 Wingspan / 35 45 Engines Morane SAULNIER N Seautfa noeproductonk sOfoir ao es oe ruggec Construction 0 dec ye s 50 5 no history contest wins Easy 5j 0 5oh0tc flignti Please add $2 postage/hasdltng $3795 December 1983 153 AT d ANI3NJ 101 Wing 2 no GIANT RIC SCALE * BOOOttfolly Molded Ftbeglo, Foanlogo I 500 Sq Area o OetoilMnlded Iranaporent Conopy * Rogged Fibergloaa Molded Engine Cowling Coittylete tti $27500 * r Plyonond Firewall Hondwore innioded oLin Sf0 Oh snipping & honoiiti5 * Formed die Landing Gear toga Ony encess retuoOeOf * Rnlled Plan end Inatrontiona5 0 resiOeots 000 7 3-4 Channel R/C Systems bust first pilot produced /3-scale 12-in tall sitting position weighs 15 oz civilian type open-necked shin trousers belt shoes New figures follow 1983 -scale civilian A-scale civilian A-scale WW II Navy Price A-scale pilot kit $1995 plus $2 shipping William M Hawke 7148 Lasting Light Way Columbia MD 21045 Bob Dolly Wiseher S-22 Lapham Peak Rd Delafield WI 53018 RC Soaring/Pruss Continued paae 53 16-in neck screw secures nose cover place whole unit joints waterproof Two five servos actuate flap erons another used rudder flap erons coupled will rudder used flaps set three tasks horizontal stabilizer automatically trimmed compensate initial center-of-lift changes thewing fourth servo horizontal stab fifth both spoilers re leasable towline Instead tow-ring RaIf uses steel ball attached cable ball about /4-in diameter locked up inside fuselage plungertype device during tow Linkages adjusted tow release occurs spoilers still remain closed ball/ socket device fuselage perfectly clean bottom next photo shows cutaway one-piece wing made twopiece molda top half bottom half method construction includes three degrees dihedral wing Note carbon fiber main spar ward spar fiberglass ballast tube Also note exactness fit tubular leading edge flaperon tube hard aluminum used making arrow shafts Hinging means Robart-type pin hinge bottom skin surface top skin surface made up two skins fiberglass sandwiched around material called Rohacell similar skin construc tion Spartakus sandwiched glass around balsa wing no structural spars styrofoam keep top bottom halves separate added carbon fiber Rohacell Ralfs plane give wing calculated strength 40 Gs plane weight 35 kilogramsor wing can withstand over 300-pound load RaIf doesnt seem too concerned about wing flex anymore last photo shows spoilers actu ated ballast tubes loaded threaded retainers knurled knobs used secure ballast slugs finishing touch werent really expecting quarterin square spruce crammed now internal S-shaped piece forward spar pre molded fiberglass piece acting stiffener two holes close wing centerline allow access actuator arms spoil ers flaperon horns inside fuse lage Conventional flap construction hinging wouldnt allow operation twisting flap under heavy airloads type wing construction carried out flaperons During contest York Dieter Pfef ferkorn book Deckers Model volume about -in thick documented calculations used design plane Included construc tion techniques photos construction drawings detailed linkages fit tings book open anyone interested model Whoever said nice guys finish last didnt know Raif Decker continue refer exquisite cre ation RaIfs ModeL like calling Mona Lisa Leonardos Painting Maybe can suggest appropriate name Ill happy pass Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Pylon Racing/Hager Continued oaae 54 manufacturing plane However Bell P-39 Airacobra ing produced limited-production basis TBD Manufacturing Company Rt No 4 166 Pony Drive Smyrna TN 37167 phone 615-459-6845 limited supply Pylon Racing engines planes market always glad see someone else get manufacturing new product Formula fliers years NMPRA Championship Race going held October 22-23 San Luis Obispo CA new Formula Onein order qualify NMPRA Cham pionship Race must first NMPRA member addition must either finish Continued page 156 154 Model Aviation FULL LINE METAL SPECIALISTS Magic Dragon Trainer Fir Fox Pro-Built Price $9995 Engine 25 cu Pro-Built Price $12495 Engine 40 cv Wing Span 55 Radio 3 4 Channels ng Span 52 Radio 4 Channels belsa consttuction Reedy fine send end coverAll balsa construction Reedy tine send cover Control surf aces hinged Hoflco landing geer 5/32 noseControl surfaces hinged Has bolt-on wing end Hoilco Inn gear strut Fitted canopy Instruction booklet end hardding gear ADS wheel pants mounted axels instelled includedFitted canopy Instruction booklet herdwero included RO Send check MO Credit Cards accepted Add $850 UPS shipping 350P51 carton FL ron odd 5% tax ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure ECH A/C 3850 US Hwy 19 No. Palm Harbor Florida 33563813 938-3266