MODEL STRUCTURES Balsa has ba sic structural material model aircraft since beginnings hobby dating back late Twenties early years real concern relative hardness 1/16-insq sticks used spars longerons rubber-powered Scale models Fundamentals change time now weigh sheet balsa determine its ultimate use None early models contained scrap plywood hardwood occasional bit bam boo wing tips tail surface outlines advent RC came use heavier materi als first began make significant departure pattem construction material usage saw foam wing cores being cut dem onstration Ed Izzo Toledo Everyone jumped foam bandwagon days remains favorite among modelers today kitsand also club projects multiple copies being made currently popular model design Scale kit manufacturers use foam production reasons Scratch-builders Scale aircraft likely adhere traditional balsa-type construc tion plywood other hardwoods added strength needed Aluminum sheet ten seen Scale models has increased popularity since tacky white glues have pro vided reliable method fastening basic wood structures Bonding dissimilar materials no longer deterrent Joint strength no longer totally dependent upon adhesive penetration wood fibers modelers really forefront advanced construction technology invest time effort making forms epoxy/ glass components sometimes eye fu ture sales duplicate parts Accuracy repro duction shapes having compound curves al unlimited end product comes mold wondrously smooth course panel lines rivet detail must added break too-smooth texture system has capa bility producing model superior ex act external shape widest selection kits featuring fiberglass fuselages Soaring models Most us willing invest effort epoxy/glass process smaller com ponents abundance compound curves such engine cowls canopies fairings minimize weight process laying up fiber glass part means careful control thickness temptation build excessive strength must resisted thin fiberglass fuselage has much greater strength traditional balsa covered fiberglass cloth strong heavy airplane crashes smites earth creased force digs deeper hole remain ing pieces somewhat larger Adding strength resist crash damage has negative results terms excessive weight completely metal Scale model continues rarity Balsa models covered thin alumi num sheet have seen occasion Beagle Pup modeled England fully metal con struction first knowledge first close-up view truly all-metal model French Cricket twin saw 1984 Paris Scale World Championships 78-in span weighed 12 lb flew very well pair OPS 40 two-stroke engines nearly half-size scale ratio 124 all-aluminum model considered one-of-a-kind effort difficult duplicate certainly beyond skill level average Scale modeler surprise allmetal Piper Cub kit being offered Polk ex hibit Toledo several years ago now line all-metal kits Prazise Allersberg Germany PA-18 Super Cub has 88-in span engines 90240 size range Aluminum ribs assembled tubular spar formed leading edge Fuse lage tail surfaces landing gear likewise all-metal As prototype PA-18 model must covered fabric although could finished plastic films sacrifice some authenticity Another all-metal kit offering Prazise 80-in-span aerobatic Hornet engines 120-300 cu range requires assem 46 Model Aviation Radio Control Scale Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield Wi 53018 Hansa Brandenburg W-29 L 1/ scale scratch-designed -built Ralph Beck Tage Larsen three-view drawings its wide spread floats handles weill water Power OS 61 span 89 Note hand-carved laminated prop aluminum struts machine guns dummy engine detailing Saito 120 four-stroke engine equipped C&H ignition system powers scratch-built 30%-scale RV-3 Willis Rase R Weight 17 lb span 68 Finish Black Baron paint Centari acrylic enamel over Coverite Bob Gialdini once turned Out championship Control Line Acrobatic models now produces top-quality Scale models 1/a-scale Laser 200 Precision kitL uses Sachs-Dolmar 37 power Wingspan 86 weight 246 lb superb finish K&B epoxy finai coat clear lmron Jeffrey Mikros P-470-25 Thunderbolt R began life Top Flite kit Engine OS 61 weighs 93 lb spans 60 bly paint Also Prazise line three ultralight types mostly metal construc tion Has day metal RC Scale model ar rived own favorite structures balsa just enough plywood hardwoods added strategic locations resist minor damage could inflicted bad runway arrival experience have found fuselage wing made balsa too light job will begin show fatigue stress cracks warps external surface indicating well underneath example six-foot-span wing pre ferred balsa sheet covering would 34 ribs have close spacing sheet thickness could reduced /~ Given choice between two hard 1/16 softer lighter /32 latter preferred because can considerable amount sanding thinning material beyond safe limits practice weigh ing sheet have found suitable %2-in sheet often weighs less equally suitable V16 Keeping six-foot wing structure below pound can quite challenge old days single-channel radio considered matter personal pride build wing spanning five feet completely covered doped weighing less 12 oz Some produced less eight ounces Fragile course learned lesson weight management com petition flying old biplanes used functional brace wires wings would have collapsed during ordinary maneuvers built-up wing rather foam dif ference weight negligible hollow-core balsa wing ribs easily prepared details will add such mechanisms flaps ailerons pushrods servo mountings retracts particular Building structure resist warps induced silk-and-dope coverings once major conContinued page 133 g 0 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 Color catalog send $400 / ~Wre proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP L High Performance Models presents ECL IPSE Designed by Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform F Equally Well Other AMA Classes Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultralight Honeycomb Win gcores extra $35 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9558 116 St. North Delta British Columbia 6Z4 Canada 604-588-0805 June 1988 47 / 1 3000 Basic Kit- $12500 Pre-Built Kit $32500 ladd sisoo s St Ill Send Check Money Order Complete dummy pilot carved foam weighs ounce Its skin texture ears nose formed Hobbypoxy Stuff Note acrobatic seat belt buck les Flexible loints permit realistic pose Wischers have quite bit say about making dummy pilots month BATT- CHEKBX Saves Time . Saves Models Install AC Models 3-Level indication receiver battery status press button Precise Rugged Small Light ade USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tax Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 RC Electrics/Kopski Continued page 129 pressed well onto motor shaft close motors end bell such gear puller can engaged tape end bell pre vent motor magnets sucking metal particles liberated grinding process Finally original pinion removed new Astro pinion can pressed place best done carefully drill press some other type press Whatever dont bang motor shaft gear hammering device Doing almost certain give regrets Ive installed 4046 several ferrites find shim usually needed between mo tor front-end bell back surface gear drive housing properly space engage new gears shim generally about / % thick depending motor gear place ment etc suggest using some noncompressible substance like sheet aluminum modeling ply wood cardboard such back tablet paper thin stack index card material Cut shim fully back up space between drive housing front end bell DO NOT recommend spacing done just flat washers gear housing mounting screwsan easy action tempting its simplic ity does afford satisfactory sup port drive Motors Ive run 4046 include couple Kyoshos DSC Great Planes Thrustmaster old Astro can motor Interest ingly enough DSC good choice drive because timed run best clock wise direction means motor brush angle such motor runs efficiently used reversing gear drives like 4046 mostbut allothers As far can tell Thrustmaster timed close neutral runs about equally well CW CCW Both economy motors have fixed adjustable considerable ef fort timing Later columns will include some performance information bench runs various motors props used Astro 4046 gear drive Thus ends another fun exchange Please forward comment question SASE please address given top first page column Happy Silent Electric Landings Everyone RC Aerobatics/Van Putte Continued page 45 roughly twice height divided average chord effective aerodynamic surface highest aspect ratio given area Which has higher aspect ratio Figure 2 Figure 3 Figure 3 course Since Ive care fully drawn both have same area fin Figure 3 has greater effectiveness Figure 2 Area increase way increase vertical fin effectiveness Have ever won dered fancy wing tip additions improve wing performance reason work cause increase effective aspect ratio wing actually fool air mol ecules thinking going past longer wing higher aspect ratio tip plates winglets conical tips fences really work well wings Unfortunately some work well direction youre just trying produce lift thats fine However vertical fins need work both directions artificial aspect ratio improver works well vertical fins tip plate design tip plate critical long covers tip has width least three times maximum thickness tip course make tip plate very big will very effective youll have another horizon tal tail up too will also note addition verticalfin tip plate will increase rudder effectiveness works same reason increases verti cal fin effectiveness Does mean best cures ver tical fins always increasing fin aspect ratio adding tip plates Unfortunately no have Pattern airplane both cures tend produce adverse roll Right rud der applied airplane tends roll left vice versa happens wing dihedral needs increased Airplane design full compro mises like RC Scale/Wischers Continued page 47 cern blessed today abundance fine finishing materials having controlled shrink age silk-and-dope finishes entailed end less series steps obliterate balsa grain respectable finish Scale model Silk soft thin flexible pulls down balsa grain doesnt matter whether balsa grain filled before after covering weight addition filler about equal silk itself introduc es pattern weave needs filled really smooth finish old system past required coats dope mixed talcum powder applied brush sanding carefully tween coats assure removing filler coats cutting silk underneath final talc coat sealed sprayed coat clear dope Without step talcum powder would leach back final color coats dull finish silk-and-dope method finishing can still followed Scale modelers dont object multiple steps much time spent pro cess Its popularity has diminished some old-timers continue use lengthy process modern surface-preparation technique substructure beneath less important can fill bare balsa K&B primer follow di rectly paint short process isnt used models prefer harden surface fabric coverings Koverall Super Coy erite silk use filler areas need perfectly smooth Fiberglass surfaces provide surprisingly lightweight cover supplies strength exterior also re quire filling schedule before final color coats extra strengthening provided fi bergiass can sometimes mean reduced structure beneath Pilot sculptures comes time stan dard hobby shop dummy pilots doni fit appli cation Wrong size apparel reasons re jection decide become amateur sculp tors make own materials probably already workshop small blocks bass wood leftover chunks styrene foam Bass wood carves well demands bit deft carv ing skill render psuedo-human likeness An THE LEADER IN COMPETITION NEW 15 DIA 116 NEW PRO SERIES 3 II \ / NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/34 634 72833/,456 833/,4568 9 4566A77/ 10 6W8W 10 6EW II 4677/7h78 11 5W 11 6EW ll/ 67 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RCPYLON RACING SERIES 500 DIA PITCHPRICE 7 SN 5/N 8I 6778 SERIES 400C 86677/7 9 777 W WIDE BLADE EW EXTRA WIDE N NARROW PROPELLERS 4 DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 66 Iz 7 7 I/ 677 Ia 8 677/a 8 67 678 June 1988 133 PRECISION MODEL PRODUCTS fIZZ~fi# Made U S BARSTOCK ALUMINUM SPINNERS Part NoSize TT-150-B 112 TT-175-B .. 1314 TT-200-B TT-225-B .. 2-1/4 TT-226-B .. 2114 FAt . 11-250-B 112 11-251-B -1/2FAI .. 11-275-B .. 2-3/4 11-276-B 3/4 FAIl 11-300-B 11-301-BFAIl rT-325-B 1/4 11-350-B .. 3-1/2 11-375-B .. 3-3/4 11-400-B Approx Weight 058 oz 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 02 520 02 570 oz 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner PROP_NUT ADAPTORS Part NoSize 11-140-A 4-28 11-147-A . 1/4-28/7mm 11-610-A . 6x 10mm 11-710-A .. 7 x 10mm .. 11-516-A 16-24 11-518-A 16-24/8mm 11-810-A . Bx 10mm 11-825-A 125mm TT-375-A -24 11-125-A . lOx 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49508202 49507602 49507602 49507602 49507502 59511702 595115oz 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 X-Acto No 11 blade sandpaper tools Need model pose work art carving standing before mirror nonartists among us can quickly forget shapes sizes trying carve shape scratch also helps have few dimen sions mind before starting whittle exam pIe average head about nine inches chin crown dimension must di vided planes scale ratio determine size block needed some variation dimensions course trips Paris made excursion catacombs tunnels limestone rock beneath city ex tracted rock used stone buildings Paris portion catacombs second bur ial place six million skeletal remains removed overcrowded cemeteries several centuries ago assumed skeletons children because skulls quite small Doc Jackson straightened out thinking informed us heads indeed smaller distant past Improved nutrition has increased size generally isnt true Carve head suit sculpting dummy pilot Polly S colors hobby shop avail able wide variety painting including flesh tones Basswood doesnt really need filling hide grain dummy pilot shouldnt have perfect skin anyway unless its ladytype pancake makeup Foam carving easier wood Most work can done small sandpaper blocks manicure sanding strips Application finish seemed challenge first until tried Hobbypoxy Stuff paste filler material can spread over foam head form ears nose eyebrows Its greatest advantage dries close approximation skin color tanned epidermis needs touch color highlight cheeks lips Simulation realistic eyes probably demanding task dummy pilot sculpture Simple solution Omit eyes Make pair large sunglasses bits colored plastic sheet Paint gold rims edges add some tiny wire ptastic scraps wrap around ears glasses cover eye area well brows portion nose neat dis guise Carve some streaks crown down back neck simulate hair have seen some excellent dummy pilot heads real hair cut modelers own head next obvi ous step apply mustache beard using same source technique applies us have bit hair spare including half Wiocher family March 1988 cotumn mention Aleenes Tacky Glue substitute RC 56 product Artis Inc Box 407 Sol yang CA 93463 offers free instruction sheets pertaining use its products sheets tells make sculpturing ma terial using tablespoon Tacky Glue mixed slice bread produce bread dough results modeling material can worked manner similar modeling clay can formed sculpted molded shaped final product tough durable will take beating finish resembles ceramic artwork Aleenes Tacky Glue used will have porcelain finish Aleenes Tacky White Craft Glue used havent tried sculpting dum pilot procedure well try soon dries naturally no baking required model having full cockpit set pilots bust consisting head shoulders insufficient very lightweight body made styrene foam dense blue foam pre ferred because less fragile handling hut white foam ordinarily used wing cores will serve Arms legs torso dimensions taken live person get proportions somewhere near correct will vary widely some dolls toy store have legs grotesquely long arms far Out proportion reality Most body parts can simple rectangles shape since clothing will disguise hidden corners view Joints flex made small scraps cloth embedded slits have cut foam proper angle provide joint movement correct direction Use white glue epoxy secure strips Shoes can simple blocks balsa cut roughly shape Hands extremely difficult experienced woodcarver Best source hands scrap toys granddaughters room Choose doll hands approximately correct size cement lower foam arms such position will fit appropriately control stick throttie cockpit dummy pilot made completely foam size up 12 long can weigh little ounce Enlist aid family member ex pert needle thread pilots cloth ing Adaptable materials whatever can found such pieces suede leather cast off jacket outerwear pilots caps vac uum formed plastic sheet colored con struction paper sun shield Trousers fabric scraps None clothing items need complete surround whole body Only front visible pilot seated back can omitted give dummy pilot realistic stance cockpit tip head slightiy chin-down turn face side rather stiffly ward Williams Brothers dummy plastic pilots now have hail-and-socket joints neck purpose Commercially made dummy pilots vary wide ly Some light others weigh half pound scale sizes arent always ac curate may difficult fit cockpit Its best start dimension example head height rather packages scale la bel purchase NEWSPACESAVING FUEL CONTAINER FiteinYourBox 2%xl%hlghx9k Tough Rigid Polyethylene udes Tubing eners Lock Tubing North Products PO Box 18419 Through Cap ostage Cleveland Heights OH 44118 ESend SSAt Catalog sheet nor complete line UUI 134 Model Aviation Retail Price $1395 1495 1595 1695 1895 1895 2095 2295 2495 2695 2895 3695 4995 5995 8995 U TIES MKLS METALO ROOKS PRECISION INSIRMESTS COMPLETE COTOLCO $250 lUlls ote~ 4MPIIU reess Ce Sproogfold Ohoo 45105 ZIOOMS1m Road mpa513 3220562
Edition: Model Aviation - 1988/06
Page Numbers: 46, 47, 133, 134
MODEL STRUCTURES Balsa has ba sic structural material model aircraft since beginnings hobby dating back late Twenties early years real concern relative hardness 1/16-insq sticks used spars longerons rubber-powered Scale models Fundamentals change time now weigh sheet balsa determine its ultimate use None early models contained scrap plywood hardwood occasional bit bam boo wing tips tail surface outlines advent RC came use heavier materi als first began make significant departure pattem construction material usage saw foam wing cores being cut dem onstration Ed Izzo Toledo Everyone jumped foam bandwagon days remains favorite among modelers today kitsand also club projects multiple copies being made currently popular model design Scale kit manufacturers use foam production reasons Scratch-builders Scale aircraft likely adhere traditional balsa-type construc tion plywood other hardwoods added strength needed Aluminum sheet ten seen Scale models has increased popularity since tacky white glues have pro vided reliable method fastening basic wood structures Bonding dissimilar materials no longer deterrent Joint strength no longer totally dependent upon adhesive penetration wood fibers modelers really forefront advanced construction technology invest time effort making forms epoxy/ glass components sometimes eye fu ture sales duplicate parts Accuracy repro duction shapes having compound curves al unlimited end product comes mold wondrously smooth course panel lines rivet detail must added break too-smooth texture system has capa bility producing model superior ex act external shape widest selection kits featuring fiberglass fuselages Soaring models Most us willing invest effort epoxy/glass process smaller com ponents abundance compound curves such engine cowls canopies fairings minimize weight process laying up fiber glass part means careful control thickness temptation build excessive strength must resisted thin fiberglass fuselage has much greater strength traditional balsa covered fiberglass cloth strong heavy airplane crashes smites earth creased force digs deeper hole remain ing pieces somewhat larger Adding strength resist crash damage has negative results terms excessive weight completely metal Scale model continues rarity Balsa models covered thin alumi num sheet have seen occasion Beagle Pup modeled England fully metal con struction first knowledge first close-up view truly all-metal model French Cricket twin saw 1984 Paris Scale World Championships 78-in span weighed 12 lb flew very well pair OPS 40 two-stroke engines nearly half-size scale ratio 124 all-aluminum model considered one-of-a-kind effort difficult duplicate certainly beyond skill level average Scale modeler surprise allmetal Piper Cub kit being offered Polk ex hibit Toledo several years ago now line all-metal kits Prazise Allersberg Germany PA-18 Super Cub has 88-in span engines 90240 size range Aluminum ribs assembled tubular spar formed leading edge Fuse lage tail surfaces landing gear likewise all-metal As prototype PA-18 model must covered fabric although could finished plastic films sacrifice some authenticity Another all-metal kit offering Prazise 80-in-span aerobatic Hornet engines 120-300 cu range requires assem 46 Model Aviation Radio Control Scale Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield Wi 53018 Hansa Brandenburg W-29 L 1/ scale scratch-designed -built Ralph Beck Tage Larsen three-view drawings its wide spread floats handles weill water Power OS 61 span 89 Note hand-carved laminated prop aluminum struts machine guns dummy engine detailing Saito 120 four-stroke engine equipped C&H ignition system powers scratch-built 30%-scale RV-3 Willis Rase R Weight 17 lb span 68 Finish Black Baron paint Centari acrylic enamel over Coverite Bob Gialdini once turned Out championship Control Line Acrobatic models now produces top-quality Scale models 1/a-scale Laser 200 Precision kitL uses Sachs-Dolmar 37 power Wingspan 86 weight 246 lb superb finish K&B epoxy finai coat clear lmron Jeffrey Mikros P-470-25 Thunderbolt R began life Top Flite kit Engine OS 61 weighs 93 lb spans 60 bly paint Also Prazise line three ultralight types mostly metal construc tion Has day metal RC Scale model ar rived own favorite structures balsa just enough plywood hardwoods added strategic locations resist minor damage could inflicted bad runway arrival experience have found fuselage wing made balsa too light job will begin show fatigue stress cracks warps external surface indicating well underneath example six-foot-span wing pre ferred balsa sheet covering would 34 ribs have close spacing sheet thickness could reduced /~ Given choice between two hard 1/16 softer lighter /32 latter preferred because can considerable amount sanding thinning material beyond safe limits practice weigh ing sheet have found suitable %2-in sheet often weighs less equally suitable V16 Keeping six-foot wing structure below pound can quite challenge old days single-channel radio considered matter personal pride build wing spanning five feet completely covered doped weighing less 12 oz Some produced less eight ounces Fragile course learned lesson weight management com petition flying old biplanes used functional brace wires wings would have collapsed during ordinary maneuvers built-up wing rather foam dif ference weight negligible hollow-core balsa wing ribs easily prepared details will add such mechanisms flaps ailerons pushrods servo mountings retracts particular Building structure resist warps induced silk-and-dope coverings once major conContinued page 133 g 0 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 Color catalog send $400 / ~Wre proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP L High Performance Models presents ECL IPSE Designed by Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform F Equally Well Other AMA Classes Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultralight Honeycomb Win gcores extra $35 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9558 116 St. North Delta British Columbia 6Z4 Canada 604-588-0805 June 1988 47 / 1 3000 Basic Kit- $12500 Pre-Built Kit $32500 ladd sisoo s St Ill Send Check Money Order Complete dummy pilot carved foam weighs ounce Its skin texture ears nose formed Hobbypoxy Stuff Note acrobatic seat belt buck les Flexible loints permit realistic pose Wischers have quite bit say about making dummy pilots month BATT- CHEKBX Saves Time . Saves Models Install AC Models 3-Level indication receiver battery status press button Precise Rugged Small Light ade USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tax Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 RC Electrics/Kopski Continued page 129 pressed well onto motor shaft close motors end bell such gear puller can engaged tape end bell pre vent motor magnets sucking metal particles liberated grinding process Finally original pinion removed new Astro pinion can pressed place best done carefully drill press some other type press Whatever dont bang motor shaft gear hammering device Doing almost certain give regrets Ive installed 4046 several ferrites find shim usually needed between mo tor front-end bell back surface gear drive housing properly space engage new gears shim generally about / % thick depending motor gear place ment etc suggest using some noncompressible substance like sheet aluminum modeling ply wood cardboard such back tablet paper thin stack index card material Cut shim fully back up space between drive housing front end bell DO NOT recommend spacing done just flat washers gear housing mounting screwsan easy action tempting its simplic ity does afford satisfactory sup port drive Motors Ive run 4046 include couple Kyoshos DSC Great Planes Thrustmaster old Astro can motor Interest ingly enough DSC good choice drive because timed run best clock wise direction means motor brush angle such motor runs efficiently used reversing gear drives like 4046 mostbut allothers As far can tell Thrustmaster timed close neutral runs about equally well CW CCW Both economy motors have fixed adjustable considerable ef fort timing Later columns will include some performance information bench runs various motors props used Astro 4046 gear drive Thus ends another fun exchange Please forward comment question SASE please address given top first page column Happy Silent Electric Landings Everyone RC Aerobatics/Van Putte Continued page 45 roughly twice height divided average chord effective aerodynamic surface highest aspect ratio given area Which has higher aspect ratio Figure 2 Figure 3 Figure 3 course Since Ive care fully drawn both have same area fin Figure 3 has greater effectiveness Figure 2 Area increase way increase vertical fin effectiveness Have ever won dered fancy wing tip additions improve wing performance reason work cause increase effective aspect ratio wing actually fool air mol ecules thinking going past longer wing higher aspect ratio tip plates winglets conical tips fences really work well wings Unfortunately some work well direction youre just trying produce lift thats fine However vertical fins need work both directions artificial aspect ratio improver works well vertical fins tip plate design tip plate critical long covers tip has width least three times maximum thickness tip course make tip plate very big will very effective youll have another horizon tal tail up too will also note addition verticalfin tip plate will increase rudder effectiveness works same reason increases verti cal fin effectiveness Does mean best cures ver tical fins always increasing fin aspect ratio adding tip plates Unfortunately no have Pattern airplane both cures tend produce adverse roll Right rud der applied airplane tends roll left vice versa happens wing dihedral needs increased Airplane design full compro mises like RC Scale/Wischers Continued page 47 cern blessed today abundance fine finishing materials having controlled shrink age silk-and-dope finishes entailed end less series steps obliterate balsa grain respectable finish Scale model Silk soft thin flexible pulls down balsa grain doesnt matter whether balsa grain filled before after covering weight addition filler about equal silk itself introduc es pattern weave needs filled really smooth finish old system past required coats dope mixed talcum powder applied brush sanding carefully tween coats assure removing filler coats cutting silk underneath final talc coat sealed sprayed coat clear dope Without step talcum powder would leach back final color coats dull finish silk-and-dope method finishing can still followed Scale modelers dont object multiple steps much time spent pro cess Its popularity has diminished some old-timers continue use lengthy process modern surface-preparation technique substructure beneath less important can fill bare balsa K&B primer follow di rectly paint short process isnt used models prefer harden surface fabric coverings Koverall Super Coy erite silk use filler areas need perfectly smooth Fiberglass surfaces provide surprisingly lightweight cover supplies strength exterior also re quire filling schedule before final color coats extra strengthening provided fi bergiass can sometimes mean reduced structure beneath Pilot sculptures comes time stan dard hobby shop dummy pilots doni fit appli cation Wrong size apparel reasons re jection decide become amateur sculp tors make own materials probably already workshop small blocks bass wood leftover chunks styrene foam Bass wood carves well demands bit deft carv ing skill render psuedo-human likeness An THE LEADER IN COMPETITION NEW 15 DIA 116 NEW PRO SERIES 3 II \ / NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/34 634 72833/,456 833/,4568 9 4566A77/ 10 6W8W 10 6EW II 4677/7h78 11 5W 11 6EW ll/ 67 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RCPYLON RACING SERIES 500 DIA PITCHPRICE 7 SN 5/N 8I 6778 SERIES 400C 86677/7 9 777 W WIDE BLADE EW EXTRA WIDE N NARROW PROPELLERS 4 DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 66 Iz 7 7 I/ 677 Ia 8 677/a 8 67 678 June 1988 133 PRECISION MODEL PRODUCTS fIZZ~fi# Made U S BARSTOCK ALUMINUM SPINNERS Part NoSize TT-150-B 112 TT-175-B .. 1314 TT-200-B TT-225-B .. 2-1/4 TT-226-B .. 2114 FAt . 11-250-B 112 11-251-B -1/2FAI .. 11-275-B .. 2-3/4 11-276-B 3/4 FAIl 11-300-B 11-301-BFAIl rT-325-B 1/4 11-350-B .. 3-1/2 11-375-B .. 3-3/4 11-400-B Approx Weight 058 oz 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 02 520 02 570 oz 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner PROP_NUT ADAPTORS Part NoSize 11-140-A 4-28 11-147-A . 1/4-28/7mm 11-610-A . 6x 10mm 11-710-A .. 7 x 10mm .. 11-516-A 16-24 11-518-A 16-24/8mm 11-810-A . Bx 10mm 11-825-A 125mm TT-375-A -24 11-125-A . lOx 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49508202 49507602 49507602 49507602 49507502 59511702 595115oz 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 X-Acto No 11 blade sandpaper tools Need model pose work art carving standing before mirror nonartists among us can quickly forget shapes sizes trying carve shape scratch also helps have few dimen sions mind before starting whittle exam pIe average head about nine inches chin crown dimension must di vided planes scale ratio determine size block needed some variation dimensions course trips Paris made excursion catacombs tunnels limestone rock beneath city ex tracted rock used stone buildings Paris portion catacombs second bur ial place six million skeletal remains removed overcrowded cemeteries several centuries ago assumed skeletons children because skulls quite small Doc Jackson straightened out thinking informed us heads indeed smaller distant past Improved nutrition has increased size generally isnt true Carve head suit sculpting dummy pilot Polly S colors hobby shop avail able wide variety painting including flesh tones Basswood doesnt really need filling hide grain dummy pilot shouldnt have perfect skin anyway unless its ladytype pancake makeup Foam carving easier wood Most work can done small sandpaper blocks manicure sanding strips Application finish seemed challenge first until tried Hobbypoxy Stuff paste filler material can spread over foam head form ears nose eyebrows Its greatest advantage dries close approximation skin color tanned epidermis needs touch color highlight cheeks lips Simulation realistic eyes probably demanding task dummy pilot sculpture Simple solution Omit eyes Make pair large sunglasses bits colored plastic sheet Paint gold rims edges add some tiny wire ptastic scraps wrap around ears glasses cover eye area well brows portion nose neat dis guise Carve some streaks crown down back neck simulate hair have seen some excellent dummy pilot heads real hair cut modelers own head next obvi ous step apply mustache beard using same source technique applies us have bit hair spare including half Wiocher family March 1988 cotumn mention Aleenes Tacky Glue substitute RC 56 product Artis Inc Box 407 Sol yang CA 93463 offers free instruction sheets pertaining use its products sheets tells make sculpturing ma terial using tablespoon Tacky Glue mixed slice bread produce bread dough results modeling material can worked manner similar modeling clay can formed sculpted molded shaped final product tough durable will take beating finish resembles ceramic artwork Aleenes Tacky Glue used will have porcelain finish Aleenes Tacky White Craft Glue used havent tried sculpting dum pilot procedure well try soon dries naturally no baking required model having full cockpit set pilots bust consisting head shoulders insufficient very lightweight body made styrene foam dense blue foam pre ferred because less fragile handling hut white foam ordinarily used wing cores will serve Arms legs torso dimensions taken live person get proportions somewhere near correct will vary widely some dolls toy store have legs grotesquely long arms far Out proportion reality Most body parts can simple rectangles shape since clothing will disguise hidden corners view Joints flex made small scraps cloth embedded slits have cut foam proper angle provide joint movement correct direction Use white glue epoxy secure strips Shoes can simple blocks balsa cut roughly shape Hands extremely difficult experienced woodcarver Best source hands scrap toys granddaughters room Choose doll hands approximately correct size cement lower foam arms such position will fit appropriately control stick throttie cockpit dummy pilot made completely foam size up 12 long can weigh little ounce Enlist aid family member ex pert needle thread pilots cloth ing Adaptable materials whatever can found such pieces suede leather cast off jacket outerwear pilots caps vac uum formed plastic sheet colored con struction paper sun shield Trousers fabric scraps None clothing items need complete surround whole body Only front visible pilot seated back can omitted give dummy pilot realistic stance cockpit tip head slightiy chin-down turn face side rather stiffly ward Williams Brothers dummy plastic pilots now have hail-and-socket joints neck purpose Commercially made dummy pilots vary wide ly Some light others weigh half pound scale sizes arent always ac curate may difficult fit cockpit Its best start dimension example head height rather packages scale la bel purchase NEWSPACESAVING FUEL CONTAINER FiteinYourBox 2%xl%hlghx9k Tough Rigid Polyethylene udes Tubing eners Lock Tubing North Products PO Box 18419 Through Cap ostage Cleveland Heights OH 44118 ESend SSAt Catalog sheet nor complete line UUI 134 Model Aviation Retail Price $1395 1495 1595 1695 1895 1895 2095 2295 2495 2695 2895 3695 4995 5995 8995 U TIES MKLS METALO ROOKS PRECISION INSIRMESTS COMPLETE COTOLCO $250 lUlls ote~ 4MPIIU reess Ce Sproogfold Ohoo 45105 ZIOOMS1m Road mpa513 3220562
Edition: Model Aviation - 1988/06
Page Numbers: 46, 47, 133, 134
MODEL STRUCTURES Balsa has ba sic structural material model aircraft since beginnings hobby dating back late Twenties early years real concern relative hardness 1/16-insq sticks used spars longerons rubber-powered Scale models Fundamentals change time now weigh sheet balsa determine its ultimate use None early models contained scrap plywood hardwood occasional bit bam boo wing tips tail surface outlines advent RC came use heavier materi als first began make significant departure pattem construction material usage saw foam wing cores being cut dem onstration Ed Izzo Toledo Everyone jumped foam bandwagon days remains favorite among modelers today kitsand also club projects multiple copies being made currently popular model design Scale kit manufacturers use foam production reasons Scratch-builders Scale aircraft likely adhere traditional balsa-type construc tion plywood other hardwoods added strength needed Aluminum sheet ten seen Scale models has increased popularity since tacky white glues have pro vided reliable method fastening basic wood structures Bonding dissimilar materials no longer deterrent Joint strength no longer totally dependent upon adhesive penetration wood fibers modelers really forefront advanced construction technology invest time effort making forms epoxy/ glass components sometimes eye fu ture sales duplicate parts Accuracy repro duction shapes having compound curves al unlimited end product comes mold wondrously smooth course panel lines rivet detail must added break too-smooth texture system has capa bility producing model superior ex act external shape widest selection kits featuring fiberglass fuselages Soaring models Most us willing invest effort epoxy/glass process smaller com ponents abundance compound curves such engine cowls canopies fairings minimize weight process laying up fiber glass part means careful control thickness temptation build excessive strength must resisted thin fiberglass fuselage has much greater strength traditional balsa covered fiberglass cloth strong heavy airplane crashes smites earth creased force digs deeper hole remain ing pieces somewhat larger Adding strength resist crash damage has negative results terms excessive weight completely metal Scale model continues rarity Balsa models covered thin alumi num sheet have seen occasion Beagle Pup modeled England fully metal con struction first knowledge first close-up view truly all-metal model French Cricket twin saw 1984 Paris Scale World Championships 78-in span weighed 12 lb flew very well pair OPS 40 two-stroke engines nearly half-size scale ratio 124 all-aluminum model considered one-of-a-kind effort difficult duplicate certainly beyond skill level average Scale modeler surprise allmetal Piper Cub kit being offered Polk ex hibit Toledo several years ago now line all-metal kits Prazise Allersberg Germany PA-18 Super Cub has 88-in span engines 90240 size range Aluminum ribs assembled tubular spar formed leading edge Fuse lage tail surfaces landing gear likewise all-metal As prototype PA-18 model must covered fabric although could finished plastic films sacrifice some authenticity Another all-metal kit offering Prazise 80-in-span aerobatic Hornet engines 120-300 cu range requires assem 46 Model Aviation Radio Control Scale Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield Wi 53018 Hansa Brandenburg W-29 L 1/ scale scratch-designed -built Ralph Beck Tage Larsen three-view drawings its wide spread floats handles weill water Power OS 61 span 89 Note hand-carved laminated prop aluminum struts machine guns dummy engine detailing Saito 120 four-stroke engine equipped C&H ignition system powers scratch-built 30%-scale RV-3 Willis Rase R Weight 17 lb span 68 Finish Black Baron paint Centari acrylic enamel over Coverite Bob Gialdini once turned Out championship Control Line Acrobatic models now produces top-quality Scale models 1/a-scale Laser 200 Precision kitL uses Sachs-Dolmar 37 power Wingspan 86 weight 246 lb superb finish K&B epoxy finai coat clear lmron Jeffrey Mikros P-470-25 Thunderbolt R began life Top Flite kit Engine OS 61 weighs 93 lb spans 60 bly paint Also Prazise line three ultralight types mostly metal construc tion Has day metal RC Scale model ar rived own favorite structures balsa just enough plywood hardwoods added strategic locations resist minor damage could inflicted bad runway arrival experience have found fuselage wing made balsa too light job will begin show fatigue stress cracks warps external surface indicating well underneath example six-foot-span wing pre ferred balsa sheet covering would 34 ribs have close spacing sheet thickness could reduced /~ Given choice between two hard 1/16 softer lighter /32 latter preferred because can considerable amount sanding thinning material beyond safe limits practice weigh ing sheet have found suitable %2-in sheet often weighs less equally suitable V16 Keeping six-foot wing structure below pound can quite challenge old days single-channel radio considered matter personal pride build wing spanning five feet completely covered doped weighing less 12 oz Some produced less eight ounces Fragile course learned lesson weight management com petition flying old biplanes used functional brace wires wings would have collapsed during ordinary maneuvers built-up wing rather foam dif ference weight negligible hollow-core balsa wing ribs easily prepared details will add such mechanisms flaps ailerons pushrods servo mountings retracts particular Building structure resist warps induced silk-and-dope coverings once major conContinued page 133 g 0 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 Color catalog send $400 / ~Wre proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP L High Performance Models presents ECL IPSE Designed by Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform F Equally Well Other AMA Classes Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultralight Honeycomb Win gcores extra $35 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9558 116 St. North Delta British Columbia 6Z4 Canada 604-588-0805 June 1988 47 / 1 3000 Basic Kit- $12500 Pre-Built Kit $32500 ladd sisoo s St Ill Send Check Money Order Complete dummy pilot carved foam weighs ounce Its skin texture ears nose formed Hobbypoxy Stuff Note acrobatic seat belt buck les Flexible loints permit realistic pose Wischers have quite bit say about making dummy pilots month BATT- CHEKBX Saves Time . Saves Models Install AC Models 3-Level indication receiver battery status press button Precise Rugged Small Light ade USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tax Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 RC Electrics/Kopski Continued page 129 pressed well onto motor shaft close motors end bell such gear puller can engaged tape end bell pre vent motor magnets sucking metal particles liberated grinding process Finally original pinion removed new Astro pinion can pressed place best done carefully drill press some other type press Whatever dont bang motor shaft gear hammering device Doing almost certain give regrets Ive installed 4046 several ferrites find shim usually needed between mo tor front-end bell back surface gear drive housing properly space engage new gears shim generally about / % thick depending motor gear place ment etc suggest using some noncompressible substance like sheet aluminum modeling ply wood cardboard such back tablet paper thin stack index card material Cut shim fully back up space between drive housing front end bell DO NOT recommend spacing done just flat washers gear housing mounting screwsan easy action tempting its simplic ity does afford satisfactory sup port drive Motors Ive run 4046 include couple Kyoshos DSC Great Planes Thrustmaster old Astro can motor Interest ingly enough DSC good choice drive because timed run best clock wise direction means motor brush angle such motor runs efficiently used reversing gear drives like 4046 mostbut allothers As far can tell Thrustmaster timed close neutral runs about equally well CW CCW Both economy motors have fixed adjustable considerable ef fort timing Later columns will include some performance information bench runs various motors props used Astro 4046 gear drive Thus ends another fun exchange Please forward comment question SASE please address given top first page column Happy Silent Electric Landings Everyone RC Aerobatics/Van Putte Continued page 45 roughly twice height divided average chord effective aerodynamic surface highest aspect ratio given area Which has higher aspect ratio Figure 2 Figure 3 Figure 3 course Since Ive care fully drawn both have same area fin Figure 3 has greater effectiveness Figure 2 Area increase way increase vertical fin effectiveness Have ever won dered fancy wing tip additions improve wing performance reason work cause increase effective aspect ratio wing actually fool air mol ecules thinking going past longer wing higher aspect ratio tip plates winglets conical tips fences really work well wings Unfortunately some work well direction youre just trying produce lift thats fine However vertical fins need work both directions artificial aspect ratio improver works well vertical fins tip plate design tip plate critical long covers tip has width least three times maximum thickness tip course make tip plate very big will very effective youll have another horizon tal tail up too will also note addition verticalfin tip plate will increase rudder effectiveness works same reason increases verti cal fin effectiveness Does mean best cures ver tical fins always increasing fin aspect ratio adding tip plates Unfortunately no have Pattern airplane both cures tend produce adverse roll Right rud der applied airplane tends roll left vice versa happens wing dihedral needs increased Airplane design full compro mises like RC Scale/Wischers Continued page 47 cern blessed today abundance fine finishing materials having controlled shrink age silk-and-dope finishes entailed end less series steps obliterate balsa grain respectable finish Scale model Silk soft thin flexible pulls down balsa grain doesnt matter whether balsa grain filled before after covering weight addition filler about equal silk itself introduc es pattern weave needs filled really smooth finish old system past required coats dope mixed talcum powder applied brush sanding carefully tween coats assure removing filler coats cutting silk underneath final talc coat sealed sprayed coat clear dope Without step talcum powder would leach back final color coats dull finish silk-and-dope method finishing can still followed Scale modelers dont object multiple steps much time spent pro cess Its popularity has diminished some old-timers continue use lengthy process modern surface-preparation technique substructure beneath less important can fill bare balsa K&B primer follow di rectly paint short process isnt used models prefer harden surface fabric coverings Koverall Super Coy erite silk use filler areas need perfectly smooth Fiberglass surfaces provide surprisingly lightweight cover supplies strength exterior also re quire filling schedule before final color coats extra strengthening provided fi bergiass can sometimes mean reduced structure beneath Pilot sculptures comes time stan dard hobby shop dummy pilots doni fit appli cation Wrong size apparel reasons re jection decide become amateur sculp tors make own materials probably already workshop small blocks bass wood leftover chunks styrene foam Bass wood carves well demands bit deft carv ing skill render psuedo-human likeness An THE LEADER IN COMPETITION NEW 15 DIA 116 NEW PRO SERIES 3 II \ / NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/34 634 72833/,456 833/,4568 9 4566A77/ 10 6W8W 10 6EW II 4677/7h78 11 5W 11 6EW ll/ 67 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RCPYLON RACING SERIES 500 DIA PITCHPRICE 7 SN 5/N 8I 6778 SERIES 400C 86677/7 9 777 W WIDE BLADE EW EXTRA WIDE N NARROW PROPELLERS 4 DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 66 Iz 7 7 I/ 677 Ia 8 677/a 8 67 678 June 1988 133 PRECISION MODEL PRODUCTS fIZZ~fi# Made U S BARSTOCK ALUMINUM SPINNERS Part NoSize TT-150-B 112 TT-175-B .. 1314 TT-200-B TT-225-B .. 2-1/4 TT-226-B .. 2114 FAt . 11-250-B 112 11-251-B -1/2FAI .. 11-275-B .. 2-3/4 11-276-B 3/4 FAIl 11-300-B 11-301-BFAIl rT-325-B 1/4 11-350-B .. 3-1/2 11-375-B .. 3-3/4 11-400-B Approx Weight 058 oz 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 02 520 02 570 oz 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner PROP_NUT ADAPTORS Part NoSize 11-140-A 4-28 11-147-A . 1/4-28/7mm 11-610-A . 6x 10mm 11-710-A .. 7 x 10mm .. 11-516-A 16-24 11-518-A 16-24/8mm 11-810-A . Bx 10mm 11-825-A 125mm TT-375-A -24 11-125-A . lOx 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49508202 49507602 49507602 49507602 49507502 59511702 595115oz 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 X-Acto No 11 blade sandpaper tools Need model pose work art carving standing before mirror nonartists among us can quickly forget shapes sizes trying carve shape scratch also helps have few dimen sions mind before starting whittle exam pIe average head about nine inches chin crown dimension must di vided planes scale ratio determine size block needed some variation dimensions course trips Paris made excursion catacombs tunnels limestone rock beneath city ex tracted rock used stone buildings Paris portion catacombs second bur ial place six million skeletal remains removed overcrowded cemeteries several centuries ago assumed skeletons children because skulls quite small Doc Jackson straightened out thinking informed us heads indeed smaller distant past Improved nutrition has increased size generally isnt true Carve head suit sculpting dummy pilot Polly S colors hobby shop avail able wide variety painting including flesh tones Basswood doesnt really need filling hide grain dummy pilot shouldnt have perfect skin anyway unless its ladytype pancake makeup Foam carving easier wood Most work can done small sandpaper blocks manicure sanding strips Application finish seemed challenge first until tried Hobbypoxy Stuff paste filler material can spread over foam head form ears nose eyebrows Its greatest advantage dries close approximation skin color tanned epidermis needs touch color highlight cheeks lips Simulation realistic eyes probably demanding task dummy pilot sculpture Simple solution Omit eyes Make pair large sunglasses bits colored plastic sheet Paint gold rims edges add some tiny wire ptastic scraps wrap around ears glasses cover eye area well brows portion nose neat dis guise Carve some streaks crown down back neck simulate hair have seen some excellent dummy pilot heads real hair cut modelers own head next obvi ous step apply mustache beard using same source technique applies us have bit hair spare including half Wiocher family March 1988 cotumn mention Aleenes Tacky Glue substitute RC 56 product Artis Inc Box 407 Sol yang CA 93463 offers free instruction sheets pertaining use its products sheets tells make sculpturing ma terial using tablespoon Tacky Glue mixed slice bread produce bread dough results modeling material can worked manner similar modeling clay can formed sculpted molded shaped final product tough durable will take beating finish resembles ceramic artwork Aleenes Tacky Glue used will have porcelain finish Aleenes Tacky White Craft Glue used havent tried sculpting dum pilot procedure well try soon dries naturally no baking required model having full cockpit set pilots bust consisting head shoulders insufficient very lightweight body made styrene foam dense blue foam pre ferred because less fragile handling hut white foam ordinarily used wing cores will serve Arms legs torso dimensions taken live person get proportions somewhere near correct will vary widely some dolls toy store have legs grotesquely long arms far Out proportion reality Most body parts can simple rectangles shape since clothing will disguise hidden corners view Joints flex made small scraps cloth embedded slits have cut foam proper angle provide joint movement correct direction Use white glue epoxy secure strips Shoes can simple blocks balsa cut roughly shape Hands extremely difficult experienced woodcarver Best source hands scrap toys granddaughters room Choose doll hands approximately correct size cement lower foam arms such position will fit appropriately control stick throttie cockpit dummy pilot made completely foam size up 12 long can weigh little ounce Enlist aid family member ex pert needle thread pilots cloth ing Adaptable materials whatever can found such pieces suede leather cast off jacket outerwear pilots caps vac uum formed plastic sheet colored con struction paper sun shield Trousers fabric scraps None clothing items need complete surround whole body Only front visible pilot seated back can omitted give dummy pilot realistic stance cockpit tip head slightiy chin-down turn face side rather stiffly ward Williams Brothers dummy plastic pilots now have hail-and-socket joints neck purpose Commercially made dummy pilots vary wide ly Some light others weigh half pound scale sizes arent always ac curate may difficult fit cockpit Its best start dimension example head height rather packages scale la bel purchase NEWSPACESAVING FUEL CONTAINER FiteinYourBox 2%xl%hlghx9k Tough Rigid Polyethylene udes Tubing eners Lock Tubing North Products PO Box 18419 Through Cap ostage Cleveland Heights OH 44118 ESend SSAt Catalog sheet nor complete line UUI 134 Model Aviation Retail Price $1395 1495 1595 1695 1895 1895 2095 2295 2495 2695 2895 3695 4995 5995 8995 U TIES MKLS METALO ROOKS PRECISION INSIRMESTS COMPLETE COTOLCO $250 lUlls ote~ 4MPIIU reess Ce Sproogfold Ohoo 45105 ZIOOMS1m Road mpa513 3220562
Edition: Model Aviation - 1988/06
Page Numbers: 46, 47, 133, 134
MODEL STRUCTURES Balsa has ba sic structural material model aircraft since beginnings hobby dating back late Twenties early years real concern relative hardness 1/16-insq sticks used spars longerons rubber-powered Scale models Fundamentals change time now weigh sheet balsa determine its ultimate use None early models contained scrap plywood hardwood occasional bit bam boo wing tips tail surface outlines advent RC came use heavier materi als first began make significant departure pattem construction material usage saw foam wing cores being cut dem onstration Ed Izzo Toledo Everyone jumped foam bandwagon days remains favorite among modelers today kitsand also club projects multiple copies being made currently popular model design Scale kit manufacturers use foam production reasons Scratch-builders Scale aircraft likely adhere traditional balsa-type construc tion plywood other hardwoods added strength needed Aluminum sheet ten seen Scale models has increased popularity since tacky white glues have pro vided reliable method fastening basic wood structures Bonding dissimilar materials no longer deterrent Joint strength no longer totally dependent upon adhesive penetration wood fibers modelers really forefront advanced construction technology invest time effort making forms epoxy/ glass components sometimes eye fu ture sales duplicate parts Accuracy repro duction shapes having compound curves al unlimited end product comes mold wondrously smooth course panel lines rivet detail must added break too-smooth texture system has capa bility producing model superior ex act external shape widest selection kits featuring fiberglass fuselages Soaring models Most us willing invest effort epoxy/glass process smaller com ponents abundance compound curves such engine cowls canopies fairings minimize weight process laying up fiber glass part means careful control thickness temptation build excessive strength must resisted thin fiberglass fuselage has much greater strength traditional balsa covered fiberglass cloth strong heavy airplane crashes smites earth creased force digs deeper hole remain ing pieces somewhat larger Adding strength resist crash damage has negative results terms excessive weight completely metal Scale model continues rarity Balsa models covered thin alumi num sheet have seen occasion Beagle Pup modeled England fully metal con struction first knowledge first close-up view truly all-metal model French Cricket twin saw 1984 Paris Scale World Championships 78-in span weighed 12 lb flew very well pair OPS 40 two-stroke engines nearly half-size scale ratio 124 all-aluminum model considered one-of-a-kind effort difficult duplicate certainly beyond skill level average Scale modeler surprise allmetal Piper Cub kit being offered Polk ex hibit Toledo several years ago now line all-metal kits Prazise Allersberg Germany PA-18 Super Cub has 88-in span engines 90240 size range Aluminum ribs assembled tubular spar formed leading edge Fuse lage tail surfaces landing gear likewise all-metal As prototype PA-18 model must covered fabric although could finished plastic films sacrifice some authenticity Another all-metal kit offering Prazise 80-in-span aerobatic Hornet engines 120-300 cu range requires assem 46 Model Aviation Radio Control Scale Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield Wi 53018 Hansa Brandenburg W-29 L 1/ scale scratch-designed -built Ralph Beck Tage Larsen three-view drawings its wide spread floats handles weill water Power OS 61 span 89 Note hand-carved laminated prop aluminum struts machine guns dummy engine detailing Saito 120 four-stroke engine equipped C&H ignition system powers scratch-built 30%-scale RV-3 Willis Rase R Weight 17 lb span 68 Finish Black Baron paint Centari acrylic enamel over Coverite Bob Gialdini once turned Out championship Control Line Acrobatic models now produces top-quality Scale models 1/a-scale Laser 200 Precision kitL uses Sachs-Dolmar 37 power Wingspan 86 weight 246 lb superb finish K&B epoxy finai coat clear lmron Jeffrey Mikros P-470-25 Thunderbolt R began life Top Flite kit Engine OS 61 weighs 93 lb spans 60 bly paint Also Prazise line three ultralight types mostly metal construc tion Has day metal RC Scale model ar rived own favorite structures balsa just enough plywood hardwoods added strategic locations resist minor damage could inflicted bad runway arrival experience have found fuselage wing made balsa too light job will begin show fatigue stress cracks warps external surface indicating well underneath example six-foot-span wing pre ferred balsa sheet covering would 34 ribs have close spacing sheet thickness could reduced /~ Given choice between two hard 1/16 softer lighter /32 latter preferred because can considerable amount sanding thinning material beyond safe limits practice weigh ing sheet have found suitable %2-in sheet often weighs less equally suitable V16 Keeping six-foot wing structure below pound can quite challenge old days single-channel radio considered matter personal pride build wing spanning five feet completely covered doped weighing less 12 oz Some produced less eight ounces Fragile course learned lesson weight management com petition flying old biplanes used functional brace wires wings would have collapsed during ordinary maneuvers built-up wing rather foam dif ference weight negligible hollow-core balsa wing ribs easily prepared details will add such mechanisms flaps ailerons pushrods servo mountings retracts particular Building structure resist warps induced silk-and-dope coverings once major conContinued page 133 g 0 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 Color catalog send $400 / ~Wre proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP L High Performance Models presents ECL IPSE Designed by Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform F Equally Well Other AMA Classes Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultralight Honeycomb Win gcores extra $35 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9558 116 St. North Delta British Columbia 6Z4 Canada 604-588-0805 June 1988 47 / 1 3000 Basic Kit- $12500 Pre-Built Kit $32500 ladd sisoo s St Ill Send Check Money Order Complete dummy pilot carved foam weighs ounce Its skin texture ears nose formed Hobbypoxy Stuff Note acrobatic seat belt buck les Flexible loints permit realistic pose Wischers have quite bit say about making dummy pilots month BATT- CHEKBX Saves Time . Saves Models Install AC Models 3-Level indication receiver battery status press button Precise Rugged Small Light ade USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tax Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 RC Electrics/Kopski Continued page 129 pressed well onto motor shaft close motors end bell such gear puller can engaged tape end bell pre vent motor magnets sucking metal particles liberated grinding process Finally original pinion removed new Astro pinion can pressed place best done carefully drill press some other type press Whatever dont bang motor shaft gear hammering device Doing almost certain give regrets Ive installed 4046 several ferrites find shim usually needed between mo tor front-end bell back surface gear drive housing properly space engage new gears shim generally about / % thick depending motor gear place ment etc suggest using some noncompressible substance like sheet aluminum modeling ply wood cardboard such back tablet paper thin stack index card material Cut shim fully back up space between drive housing front end bell DO NOT recommend spacing done just flat washers gear housing mounting screwsan easy action tempting its simplic ity does afford satisfactory sup port drive Motors Ive run 4046 include couple Kyoshos DSC Great Planes Thrustmaster old Astro can motor Interest ingly enough DSC good choice drive because timed run best clock wise direction means motor brush angle such motor runs efficiently used reversing gear drives like 4046 mostbut allothers As far can tell Thrustmaster timed close neutral runs about equally well CW CCW Both economy motors have fixed adjustable considerable ef fort timing Later columns will include some performance information bench runs various motors props used Astro 4046 gear drive Thus ends another fun exchange Please forward comment question SASE please address given top first page column Happy Silent Electric Landings Everyone RC Aerobatics/Van Putte Continued page 45 roughly twice height divided average chord effective aerodynamic surface highest aspect ratio given area Which has higher aspect ratio Figure 2 Figure 3 Figure 3 course Since Ive care fully drawn both have same area fin Figure 3 has greater effectiveness Figure 2 Area increase way increase vertical fin effectiveness Have ever won dered fancy wing tip additions improve wing performance reason work cause increase effective aspect ratio wing actually fool air mol ecules thinking going past longer wing higher aspect ratio tip plates winglets conical tips fences really work well wings Unfortunately some work well direction youre just trying produce lift thats fine However vertical fins need work both directions artificial aspect ratio improver works well vertical fins tip plate design tip plate critical long covers tip has width least three times maximum thickness tip course make tip plate very big will very effective youll have another horizon tal tail up too will also note addition verticalfin tip plate will increase rudder effectiveness works same reason increases verti cal fin effectiveness Does mean best cures ver tical fins always increasing fin aspect ratio adding tip plates Unfortunately no have Pattern airplane both cures tend produce adverse roll Right rud der applied airplane tends roll left vice versa happens wing dihedral needs increased Airplane design full compro mises like RC Scale/Wischers Continued page 47 cern blessed today abundance fine finishing materials having controlled shrink age silk-and-dope finishes entailed end less series steps obliterate balsa grain respectable finish Scale model Silk soft thin flexible pulls down balsa grain doesnt matter whether balsa grain filled before after covering weight addition filler about equal silk itself introduc es pattern weave needs filled really smooth finish old system past required coats dope mixed talcum powder applied brush sanding carefully tween coats assure removing filler coats cutting silk underneath final talc coat sealed sprayed coat clear dope Without step talcum powder would leach back final color coats dull finish silk-and-dope method finishing can still followed Scale modelers dont object multiple steps much time spent pro cess Its popularity has diminished some old-timers continue use lengthy process modern surface-preparation technique substructure beneath less important can fill bare balsa K&B primer follow di rectly paint short process isnt used models prefer harden surface fabric coverings Koverall Super Coy erite silk use filler areas need perfectly smooth Fiberglass surfaces provide surprisingly lightweight cover supplies strength exterior also re quire filling schedule before final color coats extra strengthening provided fi bergiass can sometimes mean reduced structure beneath Pilot sculptures comes time stan dard hobby shop dummy pilots doni fit appli cation Wrong size apparel reasons re jection decide become amateur sculp tors make own materials probably already workshop small blocks bass wood leftover chunks styrene foam Bass wood carves well demands bit deft carv ing skill render psuedo-human likeness An THE LEADER IN COMPETITION NEW 15 DIA 116 NEW PRO SERIES 3 II \ / NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/34 634 72833/,456 833/,4568 9 4566A77/ 10 6W8W 10 6EW II 4677/7h78 11 5W 11 6EW ll/ 67 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RCPYLON RACING SERIES 500 DIA PITCHPRICE 7 SN 5/N 8I 6778 SERIES 400C 86677/7 9 777 W WIDE BLADE EW EXTRA WIDE N NARROW PROPELLERS 4 DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 66 Iz 7 7 I/ 677 Ia 8 677/a 8 67 678 June 1988 133 PRECISION MODEL PRODUCTS fIZZ~fi# Made U S BARSTOCK ALUMINUM SPINNERS Part NoSize TT-150-B 112 TT-175-B .. 1314 TT-200-B TT-225-B .. 2-1/4 TT-226-B .. 2114 FAt . 11-250-B 112 11-251-B -1/2FAI .. 11-275-B .. 2-3/4 11-276-B 3/4 FAIl 11-300-B 11-301-BFAIl rT-325-B 1/4 11-350-B .. 3-1/2 11-375-B .. 3-3/4 11-400-B Approx Weight 058 oz 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 02 520 02 570 oz 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner PROP_NUT ADAPTORS Part NoSize 11-140-A 4-28 11-147-A . 1/4-28/7mm 11-610-A . 6x 10mm 11-710-A .. 7 x 10mm .. 11-516-A 16-24 11-518-A 16-24/8mm 11-810-A . Bx 10mm 11-825-A 125mm TT-375-A -24 11-125-A . lOx 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49508202 49507602 49507602 49507602 49507502 59511702 595115oz 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 X-Acto No 11 blade sandpaper tools Need model pose work art carving standing before mirror nonartists among us can quickly forget shapes sizes trying carve shape scratch also helps have few dimen sions mind before starting whittle exam pIe average head about nine inches chin crown dimension must di vided planes scale ratio determine size block needed some variation dimensions course trips Paris made excursion catacombs tunnels limestone rock beneath city ex tracted rock used stone buildings Paris portion catacombs second bur ial place six million skeletal remains removed overcrowded cemeteries several centuries ago assumed skeletons children because skulls quite small Doc Jackson straightened out thinking informed us heads indeed smaller distant past Improved nutrition has increased size generally isnt true Carve head suit sculpting dummy pilot Polly S colors hobby shop avail able wide variety painting including flesh tones Basswood doesnt really need filling hide grain dummy pilot shouldnt have perfect skin anyway unless its ladytype pancake makeup Foam carving easier wood Most work can done small sandpaper blocks manicure sanding strips Application finish seemed challenge first until tried Hobbypoxy Stuff paste filler material can spread over foam head form ears nose eyebrows Its greatest advantage dries close approximation skin color tanned epidermis needs touch color highlight cheeks lips Simulation realistic eyes probably demanding task dummy pilot sculpture Simple solution Omit eyes Make pair large sunglasses bits colored plastic sheet Paint gold rims edges add some tiny wire ptastic scraps wrap around ears glasses cover eye area well brows portion nose neat dis guise Carve some streaks crown down back neck simulate hair have seen some excellent dummy pilot heads real hair cut modelers own head next obvi ous step apply mustache beard using same source technique applies us have bit hair spare including half Wiocher family March 1988 cotumn mention Aleenes Tacky Glue substitute RC 56 product Artis Inc Box 407 Sol yang CA 93463 offers free instruction sheets pertaining use its products sheets tells make sculpturing ma terial using tablespoon Tacky Glue mixed slice bread produce bread dough results modeling material can worked manner similar modeling clay can formed sculpted molded shaped final product tough durable will take beating finish resembles ceramic artwork Aleenes Tacky Glue used will have porcelain finish Aleenes Tacky White Craft Glue used havent tried sculpting dum pilot procedure well try soon dries naturally no baking required model having full cockpit set pilots bust consisting head shoulders insufficient very lightweight body made styrene foam dense blue foam pre ferred because less fragile handling hut white foam ordinarily used wing cores will serve Arms legs torso dimensions taken live person get proportions somewhere near correct will vary widely some dolls toy store have legs grotesquely long arms far Out proportion reality Most body parts can simple rectangles shape since clothing will disguise hidden corners view Joints flex made small scraps cloth embedded slits have cut foam proper angle provide joint movement correct direction Use white glue epoxy secure strips Shoes can simple blocks balsa cut roughly shape Hands extremely difficult experienced woodcarver Best source hands scrap toys granddaughters room Choose doll hands approximately correct size cement lower foam arms such position will fit appropriately control stick throttie cockpit dummy pilot made completely foam size up 12 long can weigh little ounce Enlist aid family member ex pert needle thread pilots cloth ing Adaptable materials whatever can found such pieces suede leather cast off jacket outerwear pilots caps vac uum formed plastic sheet colored con struction paper sun shield Trousers fabric scraps None clothing items need complete surround whole body Only front visible pilot seated back can omitted give dummy pilot realistic stance cockpit tip head slightiy chin-down turn face side rather stiffly ward Williams Brothers dummy plastic pilots now have hail-and-socket joints neck purpose Commercially made dummy pilots vary wide ly Some light others weigh half pound scale sizes arent always ac curate may difficult fit cockpit Its best start dimension example head height rather packages scale la bel purchase NEWSPACESAVING FUEL CONTAINER FiteinYourBox 2%xl%hlghx9k Tough Rigid Polyethylene udes Tubing eners Lock Tubing North Products PO Box 18419 Through Cap ostage Cleveland Heights OH 44118 ESend SSAt Catalog sheet nor complete line UUI 134 Model Aviation Retail Price $1395 1495 1595 1695 1895 1895 2095 2295 2495 2695 2895 3695 4995 5995 8995 U TIES MKLS METALO ROOKS PRECISION INSIRMESTS COMPLETE COTOLCO $250 lUlls ote~ 4MPIIU reess Ce Sproogfold Ohoo 45105 ZIOOMS1m Road mpa513 3220562