PROPELLERS used Scale models fall two basic categories First use static display second propel ler used flying model instances dont give too much thought either probably have seen times contestant puts down model display two-bladed painted prop instead required three- four bladed prop model second stance may have also seen models struggling air size engine appeared right model wrong prop may have used Well attempt cover both situations present basics malting scalelike propel lers selecting flying prop model note modeler Robert North Haleiwa HI asking about four-bladed scale propeller seen Sam Abdows P-47 photos September 1988 column has prompted subject propellers months eolumn Rob ert asked could obtain similar prop Razorback Jug sure addition scale prop would greatly improve scale authenticity model respond didnt know scale Full-scale P47 Above fully restored can seen Cradle Aviation Mus eum Mitchell Field NY Photos such essential modelers wishing dupli cate prop detail Scale models Close ups hub area will permit duplication technical data legends manufactur ers insignia Sam Abdows Fall River MA model Below engine Installation de tailed Bills September 88 column / 4-BLADED SPINNER RACKPLATE OR 1/16 1/B PLYWOOD BASE 90 0 S/ 3-BLADED Need multibladed scale prop plane Basic steps assembling shaping 3-and 4-biaded scale props shown above Theyre made everyday model flying propellers Dotted lines show outline common full-scale blade shapes WW ii aircraft Other photos Below show P-39-type 3-blader spinner cannon Remember use engIne runningi Theyre static judging props readily available cases modeler constructed own put Rob ert touch Abdow provided informsdon made also felt might others same question fore following basic information put together three- four-bladed scale props accompanying sketch photos show ex amples typical construction three- four bladed props might used Corsair P-47 full-spinner type used P-39 P 40 first step making scale prop whether two- three- four-bladed de termine what size diameter prop should scale model can usually determined trom Use three-view drawsngs Next choose propellers making scale prop it/they little larger required der props can trimmed shaped shown dotted lines sketch still keep scale size example model requires four-bladed prop diameter 12 might want start 13- 14-in props allow trimming shaping Once have established finished prop size can lay out shape marking de sired scale outline prop felt-tip pen prefer make paper/cardboard pattern size scale shape blades can marked exactly same After marking Continued page 180 Nick Mangos Hewitt NJ F4U Corsair placed first GSCB September 1988 Scale Rally Model features bomb drop throttle control operating flaps arrestIng hook Power ST 60 Model weighs 975 lb fine scale prop sure enhances realisml 76 Model Aviation Conoi Line Scale Bill Boss 77-06 26ift Street New Hyde Park NY 11040 CL ScalelBoss Continued page 76 blades trim shape size Also point might consider either shaping blades before joining together doing reverse join shape blades choice should depend whats easiest comfort able might also point out choice propel lers making display prop Rev-Up Special Pro Series Top Rite Super M types Both props have basic shape lends easy modification shaping course can always go extreme carve prop scratch case four-bladed prop remember half prop hubs have cut away can placed right angles other still retaining same thickness single blade four-bladed prop used P-47 model special attention has paid detailing hub area prop case good drawings photos fullscale prop will needed additional de tail Balsa hardwood scraps dowel stick material added hub patiently shaped hand Dremel-type tool addition properly placed screw heads will produce goodlooking scale prop Small screws purpose can found local hobby shop generally HO train department propeller should three-bladed type has hub area hidden spinner required us produce prop has exposed blade area properly sized shaped case construction threebladed type can follow either method shown sketch method cut props before after shaping shown 300 angles mount individual sections wooden base spinner backplate sections mounted backplate small machine screws ie 2-56 should adequate Mounting sections gluing thin wooden base will permit mounting prop plane would flying prop need drilling tapping spinner backplate three-bladed prop used model such Corsair hub area has detailed circular wooden base cut proper size will serve oniy base prop sections also hub details Two accompanying photos show ba sic parts completed display prop used author P-39 Airacobra three-blade sec tions epoxied together mounted ply base per sketch three-bladed unit spinner used two-piece screw-together type cant remember make made years ago required prop mounted hind what would normally think spin ner backplate type spinner allowed easy mounting 2-56 screws simu lated cannon barrel rear half spinner attached prop small wood screws small hole cut end screwon spinner section allowed cannon barrel protrude seen photo completed prop last step making display prop paint assembly accordance color scheme chosen model apply technical data propeller insignias required comes selection flying propeller model George Lieb Orbiting Eagles Omaha asks answer following ques tion quickly What stops car answered brakes George says youre wrong goes say brakes stop wheels stop tires stop car Thats car doesnt stop very well iceor other time cant get good grip road True good brakes important overall opera tion worlds best brakes wont work well car poor tires bad pavement conditions have comparable situation model airplanes engine doesnt pull planethe propeller does propel ler must matched engine plane Al though same engine might used 14-indiameter six-inch-pitch Stunt prop would go very well D Speed plane nine-inch diameter 12-in-pitch Speed prop would pull Stunt plane through pattern very well though both props made 60-size engines prop must matched its best use props labeled same size made different manufacturers different produc tion runs may perform differently Unless very lucky will require trial several different sizes brands props find performs best combination en gine plane especially true Scale modeler can have two extremes models frontal area depending model built case fighter plane such P-s 1 P-40 frontal area model well streamlined allowing maximum use flying props blade area case small FAI RUBBER Sizes 1/4 3/16 1/8 3/32 1/16 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs 8175 Postpaid US via UPS Cal add 5% tax SMALL BOX 1/4 lb rubber $495 size Orders up $15 114 rubber mdse add $200 UPS CROCKET HOOKS gmmn4 NOW MADE BY FAI New catalog lIsts 100 FF kits SEND $150FAl NeEd Supply CATALOG ~ OXTorrance CA 50610 180 Model Aviation CONSOLIDATED PBY-5A CATALINA 81 Inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselage Vacuum formed deer acetate cockpit blisters Vacuum formed styrene cowls nacease Preformed landing gear land operation Foam wing stab cores Retractable wing floats Includes wood 90 minute VHS video building flying 6 Control Line Products Modele o serving Modelers ~Fiaishirg FriradleelsAdisolabIeRudtteraorns Costrsl loinstontrol Lines 4 HeansDutalellcranhollaodles AdIoslableLeadoalGuides Classic tilt tustoe Molar Mounts ~And much such sore Alumina lesertt UII5IRPA55ED IltALlitGUARANTEED SATI5FAtII0II Scud case address asd $100 recejee oar sew eapanded catalog aod yea sill get $260 efl year first order Cestsnan Model lrL 1311 E 161o1 weo0ce hrn 46074 dealer inquiries incited AMA Logo Ring 8 Approved ACADEMY OF MODEL AERONAUTICS Rings cast solid 10K Gold Peace $i5000 es plus $250 Sailp5drg Ordering Instrnctions Send Chack Money Order Name Addwss Ring Size end AMA No NAYCO cc eon 21 Sneenford NJ 08064 P100w olIve 4 500 weeks 50 delIvery New Jerwy residents add 0% ton AFFORDABLE SPEED CONTROLS nIx models speed coellvols Sully prapuetlonallr eater dIrecOlons Also Inconponslud lee nail-sane nhner Ohota down site motor avant OS stress mIner recelvar recalvar betnery tallore AIrplaneCampleneAOOannbled ModelsPasts Ktand Tested EKE-34c$3150$3850 EKE-24UNIA$4150 EKE-PB$4000$3000 Care EKE-7R$3500$3100 EKE-7RM$3600$3200 EKE-FR$4000$5000 EKE-Fe$4000$5000 RBV-4$1505slees RBV-4 ON BOARD VOLTMETER assembled unto carry lull 00-day warranny Please nerd $200 postage Isaudilna per order Send SA5E tar lotonuatlor Mall orders ELDEN-KEN ELECTRONICS INC po eon insa Anvada colorado ecoos ar call lodap tl 431-1330 amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104
Edition: Model Aviation - 1989/04
Page Numbers: 76, 180, 181
PROPELLERS used Scale models fall two basic categories First use static display second propel ler used flying model instances dont give too much thought either probably have seen times contestant puts down model display two-bladed painted prop instead required three- four bladed prop model second stance may have also seen models struggling air size engine appeared right model wrong prop may have used Well attempt cover both situations present basics malting scalelike propel lers selecting flying prop model note modeler Robert North Haleiwa HI asking about four-bladed scale propeller seen Sam Abdows P-47 photos September 1988 column has prompted subject propellers months eolumn Rob ert asked could obtain similar prop Razorback Jug sure addition scale prop would greatly improve scale authenticity model respond didnt know scale Full-scale P47 Above fully restored can seen Cradle Aviation Mus eum Mitchell Field NY Photos such essential modelers wishing dupli cate prop detail Scale models Close ups hub area will permit duplication technical data legends manufactur ers insignia Sam Abdows Fall River MA model Below engine Installation de tailed Bills September 88 column / 4-BLADED SPINNER RACKPLATE OR 1/16 1/B PLYWOOD BASE 90 0 S/ 3-BLADED Need multibladed scale prop plane Basic steps assembling shaping 3-and 4-biaded scale props shown above Theyre made everyday model flying propellers Dotted lines show outline common full-scale blade shapes WW ii aircraft Other photos Below show P-39-type 3-blader spinner cannon Remember use engIne runningi Theyre static judging props readily available cases modeler constructed own put Rob ert touch Abdow provided informsdon made also felt might others same question fore following basic information put together three- four-bladed scale props accompanying sketch photos show ex amples typical construction three- four bladed props might used Corsair P-47 full-spinner type used P-39 P 40 first step making scale prop whether two- three- four-bladed de termine what size diameter prop should scale model can usually determined trom Use three-view drawsngs Next choose propellers making scale prop it/they little larger required der props can trimmed shaped shown dotted lines sketch still keep scale size example model requires four-bladed prop diameter 12 might want start 13- 14-in props allow trimming shaping Once have established finished prop size can lay out shape marking de sired scale outline prop felt-tip pen prefer make paper/cardboard pattern size scale shape blades can marked exactly same After marking Continued page 180 Nick Mangos Hewitt NJ F4U Corsair placed first GSCB September 1988 Scale Rally Model features bomb drop throttle control operating flaps arrestIng hook Power ST 60 Model weighs 975 lb fine scale prop sure enhances realisml 76 Model Aviation Conoi Line Scale Bill Boss 77-06 26ift Street New Hyde Park NY 11040 CL ScalelBoss Continued page 76 blades trim shape size Also point might consider either shaping blades before joining together doing reverse join shape blades choice should depend whats easiest comfort able might also point out choice propel lers making display prop Rev-Up Special Pro Series Top Rite Super M types Both props have basic shape lends easy modification shaping course can always go extreme carve prop scratch case four-bladed prop remember half prop hubs have cut away can placed right angles other still retaining same thickness single blade four-bladed prop used P-47 model special attention has paid detailing hub area prop case good drawings photos fullscale prop will needed additional de tail Balsa hardwood scraps dowel stick material added hub patiently shaped hand Dremel-type tool addition properly placed screw heads will produce goodlooking scale prop Small screws purpose can found local hobby shop generally HO train department propeller should three-bladed type has hub area hidden spinner required us produce prop has exposed blade area properly sized shaped case construction threebladed type can follow either method shown sketch method cut props before after shaping shown 300 angles mount individual sections wooden base spinner backplate sections mounted backplate small machine screws ie 2-56 should adequate Mounting sections gluing thin wooden base will permit mounting prop plane would flying prop need drilling tapping spinner backplate three-bladed prop used model such Corsair hub area has detailed circular wooden base cut proper size will serve oniy base prop sections also hub details Two accompanying photos show ba sic parts completed display prop used author P-39 Airacobra three-blade sec tions epoxied together mounted ply base per sketch three-bladed unit spinner used two-piece screw-together type cant remember make made years ago required prop mounted hind what would normally think spin ner backplate type spinner allowed easy mounting 2-56 screws simu lated cannon barrel rear half spinner attached prop small wood screws small hole cut end screwon spinner section allowed cannon barrel protrude seen photo completed prop last step making display prop paint assembly accordance color scheme chosen model apply technical data propeller insignias required comes selection flying propeller model George Lieb Orbiting Eagles Omaha asks answer following ques tion quickly What stops car answered brakes George says youre wrong goes say brakes stop wheels stop tires stop car Thats car doesnt stop very well iceor other time cant get good grip road True good brakes important overall opera tion worlds best brakes wont work well car poor tires bad pavement conditions have comparable situation model airplanes engine doesnt pull planethe propeller does propel ler must matched engine plane Al though same engine might used 14-indiameter six-inch-pitch Stunt prop would go very well D Speed plane nine-inch diameter 12-in-pitch Speed prop would pull Stunt plane through pattern very well though both props made 60-size engines prop must matched its best use props labeled same size made different manufacturers different produc tion runs may perform differently Unless very lucky will require trial several different sizes brands props find performs best combination en gine plane especially true Scale modeler can have two extremes models frontal area depending model built case fighter plane such P-s 1 P-40 frontal area model well streamlined allowing maximum use flying props blade area case small FAI RUBBER Sizes 1/4 3/16 1/8 3/32 1/16 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs 8175 Postpaid US via UPS Cal add 5% tax SMALL BOX 1/4 lb rubber $495 size Orders up $15 114 rubber mdse add $200 UPS CROCKET HOOKS gmmn4 NOW MADE BY FAI New catalog lIsts 100 FF kits SEND $150FAl NeEd Supply CATALOG ~ OXTorrance CA 50610 180 Model Aviation CONSOLIDATED PBY-5A CATALINA 81 Inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselage Vacuum formed deer acetate cockpit blisters Vacuum formed styrene cowls nacease Preformed landing gear land operation Foam wing stab cores Retractable wing floats Includes wood 90 minute VHS video building flying 6 Control Line Products Modele o serving Modelers ~Fiaishirg FriradleelsAdisolabIeRudtteraorns Costrsl loinstontrol Lines 4 HeansDutalellcranhollaodles AdIoslableLeadoalGuides Classic tilt tustoe Molar Mounts ~And much such sore Alumina lesertt UII5IRPA55ED IltALlitGUARANTEED SATI5FAtII0II Scud case address asd $100 recejee oar sew eapanded catalog aod yea sill get $260 efl year first order Cestsnan Model lrL 1311 E 161o1 weo0ce hrn 46074 dealer inquiries incited AMA Logo Ring 8 Approved ACADEMY OF MODEL AERONAUTICS Rings cast solid 10K Gold Peace $i5000 es plus $250 Sailp5drg Ordering Instrnctions Send Chack Money Order Name Addwss Ring Size end AMA No NAYCO cc eon 21 Sneenford NJ 08064 P100w olIve 4 500 weeks 50 delIvery New Jerwy residents add 0% ton AFFORDABLE SPEED CONTROLS nIx models speed coellvols Sully prapuetlonallr eater dIrecOlons Also Inconponslud lee nail-sane nhner Ohota down site motor avant OS stress mIner recelvar recalvar betnery tallore AIrplaneCampleneAOOannbled ModelsPasts Ktand Tested EKE-34c$3150$3850 EKE-24UNIA$4150 EKE-PB$4000$3000 Care EKE-7R$3500$3100 EKE-7RM$3600$3200 EKE-FR$4000$5000 EKE-Fe$4000$5000 RBV-4$1505slees RBV-4 ON BOARD VOLTMETER assembled unto carry lull 00-day warranny Please nerd $200 postage Isaudilna per order Send SA5E tar lotonuatlor Mall orders ELDEN-KEN ELECTRONICS INC po eon insa Anvada colorado ecoos ar call lodap tl 431-1330 amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104
Edition: Model Aviation - 1989/04
Page Numbers: 76, 180, 181
PROPELLERS used Scale models fall two basic categories First use static display second propel ler used flying model instances dont give too much thought either probably have seen times contestant puts down model display two-bladed painted prop instead required three- four bladed prop model second stance may have also seen models struggling air size engine appeared right model wrong prop may have used Well attempt cover both situations present basics malting scalelike propel lers selecting flying prop model note modeler Robert North Haleiwa HI asking about four-bladed scale propeller seen Sam Abdows P-47 photos September 1988 column has prompted subject propellers months eolumn Rob ert asked could obtain similar prop Razorback Jug sure addition scale prop would greatly improve scale authenticity model respond didnt know scale Full-scale P47 Above fully restored can seen Cradle Aviation Mus eum Mitchell Field NY Photos such essential modelers wishing dupli cate prop detail Scale models Close ups hub area will permit duplication technical data legends manufactur ers insignia Sam Abdows Fall River MA model Below engine Installation de tailed Bills September 88 column / 4-BLADED SPINNER RACKPLATE OR 1/16 1/B PLYWOOD BASE 90 0 S/ 3-BLADED Need multibladed scale prop plane Basic steps assembling shaping 3-and 4-biaded scale props shown above Theyre made everyday model flying propellers Dotted lines show outline common full-scale blade shapes WW ii aircraft Other photos Below show P-39-type 3-blader spinner cannon Remember use engIne runningi Theyre static judging props readily available cases modeler constructed own put Rob ert touch Abdow provided informsdon made also felt might others same question fore following basic information put together three- four-bladed scale props accompanying sketch photos show ex amples typical construction three- four bladed props might used Corsair P-47 full-spinner type used P-39 P 40 first step making scale prop whether two- three- four-bladed de termine what size diameter prop should scale model can usually determined trom Use three-view drawsngs Next choose propellers making scale prop it/they little larger required der props can trimmed shaped shown dotted lines sketch still keep scale size example model requires four-bladed prop diameter 12 might want start 13- 14-in props allow trimming shaping Once have established finished prop size can lay out shape marking de sired scale outline prop felt-tip pen prefer make paper/cardboard pattern size scale shape blades can marked exactly same After marking Continued page 180 Nick Mangos Hewitt NJ F4U Corsair placed first GSCB September 1988 Scale Rally Model features bomb drop throttle control operating flaps arrestIng hook Power ST 60 Model weighs 975 lb fine scale prop sure enhances realisml 76 Model Aviation Conoi Line Scale Bill Boss 77-06 26ift Street New Hyde Park NY 11040 CL ScalelBoss Continued page 76 blades trim shape size Also point might consider either shaping blades before joining together doing reverse join shape blades choice should depend whats easiest comfort able might also point out choice propel lers making display prop Rev-Up Special Pro Series Top Rite Super M types Both props have basic shape lends easy modification shaping course can always go extreme carve prop scratch case four-bladed prop remember half prop hubs have cut away can placed right angles other still retaining same thickness single blade four-bladed prop used P-47 model special attention has paid detailing hub area prop case good drawings photos fullscale prop will needed additional de tail Balsa hardwood scraps dowel stick material added hub patiently shaped hand Dremel-type tool addition properly placed screw heads will produce goodlooking scale prop Small screws purpose can found local hobby shop generally HO train department propeller should three-bladed type has hub area hidden spinner required us produce prop has exposed blade area properly sized shaped case construction threebladed type can follow either method shown sketch method cut props before after shaping shown 300 angles mount individual sections wooden base spinner backplate sections mounted backplate small machine screws ie 2-56 should adequate Mounting sections gluing thin wooden base will permit mounting prop plane would flying prop need drilling tapping spinner backplate three-bladed prop used model such Corsair hub area has detailed circular wooden base cut proper size will serve oniy base prop sections also hub details Two accompanying photos show ba sic parts completed display prop used author P-39 Airacobra three-blade sec tions epoxied together mounted ply base per sketch three-bladed unit spinner used two-piece screw-together type cant remember make made years ago required prop mounted hind what would normally think spin ner backplate type spinner allowed easy mounting 2-56 screws simu lated cannon barrel rear half spinner attached prop small wood screws small hole cut end screwon spinner section allowed cannon barrel protrude seen photo completed prop last step making display prop paint assembly accordance color scheme chosen model apply technical data propeller insignias required comes selection flying propeller model George Lieb Orbiting Eagles Omaha asks answer following ques tion quickly What stops car answered brakes George says youre wrong goes say brakes stop wheels stop tires stop car Thats car doesnt stop very well iceor other time cant get good grip road True good brakes important overall opera tion worlds best brakes wont work well car poor tires bad pavement conditions have comparable situation model airplanes engine doesnt pull planethe propeller does propel ler must matched engine plane Al though same engine might used 14-indiameter six-inch-pitch Stunt prop would go very well D Speed plane nine-inch diameter 12-in-pitch Speed prop would pull Stunt plane through pattern very well though both props made 60-size engines prop must matched its best use props labeled same size made different manufacturers different produc tion runs may perform differently Unless very lucky will require trial several different sizes brands props find performs best combination en gine plane especially true Scale modeler can have two extremes models frontal area depending model built case fighter plane such P-s 1 P-40 frontal area model well streamlined allowing maximum use flying props blade area case small FAI RUBBER Sizes 1/4 3/16 1/8 3/32 1/16 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs 8175 Postpaid US via UPS Cal add 5% tax SMALL BOX 1/4 lb rubber $495 size Orders up $15 114 rubber mdse add $200 UPS CROCKET HOOKS gmmn4 NOW MADE BY FAI New catalog lIsts 100 FF kits SEND $150FAl NeEd Supply CATALOG ~ OXTorrance CA 50610 180 Model Aviation CONSOLIDATED PBY-5A CATALINA 81 Inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselage Vacuum formed deer acetate cockpit blisters Vacuum formed styrene cowls nacease Preformed landing gear land operation Foam wing stab cores Retractable wing floats Includes wood 90 minute VHS video building flying 6 Control Line Products Modele o serving Modelers ~Fiaishirg FriradleelsAdisolabIeRudtteraorns Costrsl loinstontrol Lines 4 HeansDutalellcranhollaodles AdIoslableLeadoalGuides Classic tilt tustoe Molar Mounts ~And much such sore Alumina lesertt UII5IRPA55ED IltALlitGUARANTEED SATI5FAtII0II Scud case address asd $100 recejee oar sew eapanded catalog aod yea sill get $260 efl year first order Cestsnan Model lrL 1311 E 161o1 weo0ce hrn 46074 dealer inquiries incited AMA Logo Ring 8 Approved ACADEMY OF MODEL AERONAUTICS Rings cast solid 10K Gold Peace $i5000 es plus $250 Sailp5drg Ordering Instrnctions Send Chack Money Order Name Addwss Ring Size end AMA No NAYCO cc eon 21 Sneenford NJ 08064 P100w olIve 4 500 weeks 50 delIvery New Jerwy residents add 0% ton AFFORDABLE SPEED CONTROLS nIx models speed coellvols Sully prapuetlonallr eater dIrecOlons Also Inconponslud lee nail-sane nhner Ohota down site motor avant OS stress mIner recelvar recalvar betnery tallore AIrplaneCampleneAOOannbled ModelsPasts Ktand Tested EKE-34c$3150$3850 EKE-24UNIA$4150 EKE-PB$4000$3000 Care EKE-7R$3500$3100 EKE-7RM$3600$3200 EKE-FR$4000$5000 EKE-Fe$4000$5000 RBV-4$1505slees RBV-4 ON BOARD VOLTMETER assembled unto carry lull 00-day warranny Please nerd $200 postage Isaudilna per order Send SA5E tar lotonuatlor Mall orders ELDEN-KEN ELECTRONICS INC po eon insa Anvada colorado ecoos ar call lodap tl 431-1330 amount experimentation props might required find right combination other extreme model such SE 5A frontal area engine cowling very large allowing small portion prop either end effective case con siderable experimentation might required find right prop type diameter pitch com bination engine used might find after considerable experimentation en gine used too small case good starting point prop se lection might manufacturers recommenda tion size engine type model Remember well-matched engine prop model combination will go long way toward suring better model performance limiting en gine damage Please send ideas comments contest activity re ports especially photos CL Scale activity address listed very top column CL Aerobatics/Fancher Continued page 77 Precision Aerobatics listening walked shop re veled emotions evoked personal crea tions relationship Stunt masters genius Sure genius inspired seek excellence craft assu redly art form What Citation other Fancher playing Werwages Ares just smidgen personal touch Horowitz interpret ing Mozart will impact moment charged no small degree presence nearly com plete Ares am preparing upeom ing Nostalgia Era events design last built teenager would stir excitement appreciation its beauty nearly 30 years later lends credence belief just balsa glue emotionally charged moment ac cepting Walker Cup 1979 Bob Gieseke stated Stunt lot just toy air planes Although statement intensely personal message Bob spoke volumes about nature Stunt event people fly Stunt artistic expression Darn right other hand maybe third glass good California Cabernet Naaah stopped flying field day after Christ mas eat hearts out East Coasters ran across young Paul Pomposo trying trim Out new Imitation may recall last month discussed resolved problem Pauls hard-starting powerless ST 46which dis covered improperly reassembled Well week Paul ship air hoping try some patterns agreed stick around work him Right off bat could tell serious problem level flight outboard wing substantially up inverted down Obviously some thing out whack Remember review Coxs Super Chip munk few months back talked about del eterious means bad Whitely effects condition Because lift_of wing right angles wings span ship banked circle some lift trying fly ship toward pilot case Chip munk lack tip weight caused problem Thus outboard wing elevated model flying either upright inverted Pauls case wing banked inward plane upright thereby reducing line tension banked outward plane flying inverted thus increasing line tension often symptom warped wing Pauls case wasnt wing warped flaps outboard flap Stock fog InemEat Shipment ZENOAH 04237 Cu In$24995 NOW Qoodra 40 CDI 3berlng wItI eprlng otartrl 816896 ROg Osedre 4001225 wIth Brioghello flywheel 96 Reg Onedre 40 Power Aeeonbly Only poInt *4806 QUADRA orZENOAH REPAIR $1000 plo pert Jin Moe. ERCOUPEPLANS $2306 FULL-KIT $23990 Jin Manner TOMAHAWKPLANS $2395 FLiLLKIT $2295 Jint Monoer J3 KITTENPLANS $295 FIJILKIT $2195 SIG KADET SENIOR KIT $55 nova $2206 SIG KADET SENIORITA KIT $3906 nec $1606 ZENOAH G-22 ZENOAH G39 5 FLOATS 401/4 no1 coren $2195 conpleoe kit $4706 10 teWI WHEELS $3906 P/K Spring Starter $245 PLANS SUPER STEARMAN 1/4 Godfrey $3990 1/3 TAYLORCRAFT 01/2 CUB Nelit $395 MGA Pointed Pilot Bsntn 1/4 so. WW1 WW2 Civ $195 Servos H402 42 $1295 Wodd 518 Irge nodelo $445 Peetno 9 nine ER TOP FUT DYNAThRUST 39160FF us Qoedre FUEL TANKS10 no $7522 FIBERGLASS ARROW SHAFTS 5/16 22 long 6 $115 24 00cr SevicO $290 POStage Book Cheok or.. JIM MESSERS QUALITY MODEL PRODUCTS Valley Wow Di Box 43 Allagany NY 14706 bowed down inboard bowed up gether acted like ailerons control sur faces control movement about roll axis untethered airplanes precisely what doing Pauls Imitation restraining action control lines Pauls ship would have performing continu ous unsolicited barrel rolls three ways flaps can cause problem First case Pauls ship can simply warped usually re sult covering being shrunk unequally Second flap horn itself may bent left right arms arent parallel holes flaps may have drilled parallel another flaps arent neutral same time Third flaps themselves may have im properly tapered have built-in twist root tip problems easily noted rear aircraft See com puter-generated sketches first third cases may never have problem IF both flaps twisted warped same direction case flaps wont effective helping model turn di rection other least wont get undesirable bank can live al though down deep youll know aint PROPS Worlds Largest Range Fiberglass Carbon Fiber Props Sizes 1 /2A Quarter Scale 023 and4 Blades Increased Availability 1989 Send SASE Information TOM DIXON 1938 Peachtree Suite 401 Atlanta GA 30309 April 1989 181 Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want take guesswork out finishing gemgBe Ph 419-797-2208P0 Box 2480 usky Ohio 44870 Electric F ight Has Seake2 ootls LIghtweIght 12 toooey back Adjustable sw$tcbiog pointarantee Solderless tertolnal rosy hookop ON/OFF Controller 2495 Power save relght ye, bigh efficIency 0$6V too 2$ Sine 22x53x63 Add 510$ shippiog Coliforolo residents odd 65% ii63 Tos Send Cbeek seoney order Come othJjHigh Sky FotoIa eooootor3929 KanSaS St #9 otbrvooe7 000San DlegoCA 92104