Dealing with the Challenges

The careful eye will detect really isnt same Bucker Jungmeister shown coverwith Miss Kathy Carl isa one-quarter size version Art Yadvens airplane whereas cover Jungmeister has scale one-third Both models spectacular THE STATE sophistication miniature aircraft appointments has grown phenomenally during last decade us old enough appreciate evolution hand-hewn propellers beautiful machine-carved variety today awed various accessories keep appearing shows such WRAM Toledo Despite availability often required go hack old hammer tong method creating unavailable accessory Much time consumed researching aero nautical archives particular era find favorite airplane fans embers earlier youth discover another favorite mind seems spawn favorite airplanes seems no end visions yesteryear like proverbial kid face against candy store window enchantment often followed trepida lions procrastinations eventual abandon ment dream project no attempt present cure excuses develop tum away challenge rather will attempt encourage assure modeler need journeyman particular craft achieve success Trying failing part successful endeavor Remember very first model might ask question people 86 Model Aviation first developed retract system over balanced flywheel Having built Quarter Scale model Art Yadvens Bucker Juogmeister envisioned possibility functional chrome nickelplated exhaust stack one-third-scale ver sionjust like Yadvens big bird challenge Tooling would have simple applicable other miniature aircraft two items Bucker attracted greatest interest 1981 WRAM Show metalwork exhaust stack real istic looking upholstery work Hopefully some procedures outlined will assis tance planning favorite bird Mufflers pipes Some Quadra twin-pipe mufflers available today have large expansion chambers back-pressure no problem Too much pipe may cause engine peak Out may have relegate scale stack its cosmetic value Constant-diameter stacks should present no construction problems However header visible conical elliptical shape transitioning round stack therein lies rub Press dies Begin lightly spot-gluing two pieces hardwood such maple lemon Place piece brown paper between pieces will ensure separation after shaping Dremel tool will come handy roughing-out forming blocks Leave slight taper draft December 1982 87 Side view tfle completed exhaust system tail pipe easy cowl removal front section telescopes rear assembly Support brackets Of/4 plywith 4-40 blind nuts inlaid epoxied fuselage Front view header assembly shows 4-40 machine screws used attach inside mounting flange cowl telescoping header tail pipe plainly visible Hose clamps used fasten silicone tubing muffler 1/2-in header nipples Note mounting flange hardware iaper patterns top sheet metal parts developed around wooden forming blocks Blocks also serve fitting forms locations seams brazed Finished piece right picture top metal-clad-flakeboard female draw die Middle left-hand right-hand forming blocks note guide pins Bottom resulting clamshell pressings header 037-in copper uppermost picture 1/2-in-dia exhaust nipple sub-assembly flange ready brazed header beneath has silver-brazed unit tail pipe bottom brazed sheet metal part completely brazed header before finishing inlet outlet portions will reduce amount stretch required make removal pressed piece easier Shape eyeball symmetry Progressively sand smooth finish Remember isnt balsa fine blade carefully pry pieces apart Mark whether left right-hand Next cut out four pieces -in flakeboard 4 5 piece will serve drawing die stretch copper blank over two male forming blocks fourth piece will used pressure plate placed drawing die Have no fear flakeboard manufactured under tons hydraulic pressure Trace outline forming block center flakeboard jig out opening 1/16in larger necessary clearance metal form between press dies File opening free saw marks Trace outline opening onto 18-gauge sheet steel 6-guage Dural Cut out little shy Leave some filing used cheap manual nibbling tool Epoxy both metal pieces draw die flakeboard align openings Weight everything down cure overnight After curing dress sand opening its final size Further secure metal plates few #4 #6 -in flat-head screws Drill 3/16-in guide pin holes Using drawing die drill jig spot guide pin locations two flakeboards holes must drilled drill press proper alignment Use drill few thousandths under size press-fit guide pins male dies should extend 9/16 beyond surfaces sure draw die slides over male forming die turning over Remember draw die will form both left right-hand pieces too tight open holes up slightly wiregauge drills starting #10 draw die place trace through Onto flakeboard Epoxy forming blocks within outlines Carefully center blocks Check clearances Again cheek left right-hand pressing 20-gauge 037 copper blank size critical less metal press tail pipe opening easier pressing job objective press left right clam shell best downward pressure obtained hydraulic arbor press will take few minutes press pieces beyond needs friendly automotive shop improvising type can probably wonders small hydraulic jack Try concrete floor garage rear axle automobile case sure cover draw die Continued page 162 88 Model Aviation top small clamps hold two halves header exhaust stack ready fluxing silver brazing unit beneath has com pletely brazed surplus metal removed silver-brazed header showing large take area view nearly complete need ing file sand surplus material seams until invisible Finished vinyl seat back contact-glued totheturtleback Notethatgap band stitching glued turtleback seat-back edge Cockpit sides vinyl strips glued over brass tubing Front cockpit bumper fashioned same manner seat back Preparation underway make seat-back cushion JB Special sport biplane Atthis polntwesee paperpattern 1/16 plyback ing ready cut out partially-shaped Styrofoam block will undergo carving give seat-back cushion realistic look Hear view seat back stapler used attaching tightly stretched vinyl plywood backing Pins hold gap band place Front view seat back Its almost ready final assembly planes turtleback Such detailing does wonders realism TANK SYSTEMS can depend flight-ti out models full lank sy8tema Sullivan secret full tank capacity lies unique bubble design fill tank capacity bubble top pockets right amount air tube fitting neatly inside NEV-R-LEAK tank Ixilit last impervious types fuel Choose g capacities 1 oz 16 ozs wide range shapes sizes dimensions fit kind model 46 choose Whats tanks over 4 ozs include Klapper-Klunk klunk pick-ups Now can choose better fuel tank system longer dependable flight-time See dealer today send complete catalog describing styles sizes dimen sions WARNING Modelers Fly t4ea Overhead Power Lines P R 0 D U C T S N C svIH Road PO Box C Widow Grove PA 1090-0W3 215 650OS stick look closely photo can see wing post extensions plugged tissue sockets mounting frame remove model simply unplug posts Assuming model correctly adjusted last time Out will ready go after hooking up prop winding rubber motor Look hack photo stacked models note models interleave has adequate room around So though box full models still mostly empty Indoor sessions Kansas City Roger Schroed er 4111 West 98 St Overland Park KS 66207 has busily organizing Indoor activity Kansas City KS/MO area has announced Fun Fly sessions Westport-Roanoke Com munity Center 3601 Roanoke Rd. Kansas City MO sessions run 3 pm 5 pm October 16 November 13 Decem ber II 1982 January 29 1983 also has plans contests beheld later season live near enough drop visit folks arc nice people Bud Tenor PO Box 545 Richardson TX 75080 Scale Challenges/Agosta Continued page 88 remaining flakeboard pressure plate before pressing As pressure applied copper will stretch around male forming block Stop notice no movement After COMPLETt THIS FORMI AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth $t. NW Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere including Canada Mexico $2400 US Schools $900 US Libraries $1350 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON Dc 20005 separating dies will notice fairly defined radii however will some wrin kles surplus metal Gently hammer out wrinkles steel plate block clam shells should matched up perfectly mated necessary lightly sand flat surface Trim excess metal within 3 radius Cut away openings Dont worry about distortions point Clamp final assembly Silver brazing Apply some Handy Flux inside seam silver solderwill puddle between two pieces trimmed will produce fine sturdy seam Coat small section brazing wire flux As heat applied seam flux will begin melt proper temperature reached solder will follow along path flux puddle seam couple salient points silver solder used process should confused extremely low-melting silver solder sold hardware stores hobby shops melting temperature silver solder purpose near l1000F available refrigeration craft supply houses point header mounting plate must cut out Drill two holes i-in diameter tubes about 1 long Drill mounting holes 4-40 machine screws Leave enough edge distance elastic stop nuts subassembly brazed header mounted cowl finished tail pipe Make appropriate mounting brackets particular airplane Heat source Prestolite acetylene outfit best source heat will produce excellent penetration silver braze couple asbestos shingles will prevent 162 Model Aviation CUTAWAY SNOWING INSTALLATION ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS AMA Membership161 Ace Radio Control43 Aerolite Products148 Aerotrend Products10 Air Design132 AirtronicsInside Front Cover Phase Art126 Americas Hobby Center131 Andrews Aircraft Model Co156 BK Products118 Richard G Barron137 Bavarian Precision Products129 G Bertella140 Dave Brown Products118 Buckeye Balsa129 Byron Originals136 CB Associates51 California Model Imports128 Carlberg Companies132 Carolina-Taffinder136 Johnnie Casburn Mfg Co156 Charlies RC Goodies140 Circus Hobbies142-147 Clark Industries132 Consumers Hobby Corp154-1 55 Coverite123 157 Cox Hobbies75 85 DG Products153 DGM Industries136 DaCa Model Products158 Davey Systems Corp118 Jim Denaro Model Products47 Bob Dively Model Aircraft6 Dodgson Designs84 Du-Bro Products20 Eastcraft Specialty Products84 Eastern Soaring Supplies151 Electric Eagle141 Addis Elmore151 FAI Model Supply160 FHS Supply Inc4 Fab-Tek Inc159 Fiberglass Master82 Flightllne Shirts15 Flyline Models122 Fourmost Products74 Fox Mfg 128 Full Command Systems47 Futaba Corp America21 GT Models150 Carl Goldberg Models129 Gorham Model Products151 153 Great Lakes Model & Mold Co12 Great Planes Model Mfg Co7 Grish Brothers130 Historic Aviation5 Hobby Barn120-121 Hobby Hideaway150 Hobby Horn133 Hobbypoxy Products74 75 Hobby Radio Shop84 Hobby Shack127 Hobby Swap News8 Horizon Model Crafts141 Hunt Models150 Indoor Model Supplies126 Indy RC Sales138-139 International Modeler Show28 J-5Enterprises130 Jomar Products133 K&B Manufacturing11 K&S Engineering128 Kitty Hawk Models74 Kraft Systems36 Kustom Kraftsmanship133 Litco Systems125 Lone Star Models137 MACS Products128 Majestic Models133 George Marsden45 Master Scale37 McDaniel RC Service119 Jim Messers Quality Products129 Midwest Products13 Mills Airplane Models8 Miniature Aircraft Supply157 Model Engineering Norwalk150 Model Helicopter USA163 Model Products Corp83 Model Rectifier Corp side Back Cover Mr Gs Products124 Mutchlers Hobbies134-135 Jerry Nelson & Co160 Nor-Cal Avionics Inc133 OrLine RC Aircraft159 P&G Metal Products128 INDEX ADVERTISERS INDEX Pacer Technology & Resources2 Peck-Polymers76 Pica Products9 Plaza Hobbycraft12 Precision Sanding Tools151 Proctor Enterprises129 Prop Shop76 RAM Radio Control Models158 RC Kits Mfg82 RF Enterprises51 RJL Industries158 RLF Products136 Radio South119 Repla-Tech International151 Rolley Model Products160 Norm Rosenstock163 Roush Mfg Co160 SR Industries82 Saf-Flite Models140 Sailplane Factory137 Satellite City77 Sheldons Hobby Shop83 Sig Mfg Co1 Sonic-Tronics4 Squadron-Signal Publications29 Square Loop Hobby Center140 Sterling Models76 Sullivan Products162 Superwings75 Swanson Assoc136 T&D Fiberglass Specialties140 TML Manufacturing Ltd152 T&T Models140 Tatone Products148 152 Taylor-Craft Ltd151 Tower Hobbies149 US Quadra136 VK Model Aircraft Co119 Vogel Aviation122 WE Technical Services8 Whale Hobbies124 Williams Bros12 Windsor Propeller Co 2 World EnginesBacktover CA Zaic Co156 Zenith Aviation Books19 Nick Ziroll Models83 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX bench burning Also few fire bricks will needed rest brazing work Safety glasses fire extinguisher must Finishing After brazing complete flux must washed off hot water Some will have scraped off Trim file off excess metal until header looks feels like single piece An electric sander handy sure have can cold water nearbythe copper header will get mighty hot header openings can touched up over some round steel stock clamped vise Tail pipe airplanes have single tail pipe located alongside fuselage Some in-line engines have arrangement header may exit outside inside cowl rate opening rear tail pipe appears always elliptical cutting pipe angle effect larger exhaust area little hammering some stretching copper will bring close realism few short pieces cold-rolled steel rods various diameters indispensable forming reshaping tubing bending large radius sheet metal Bucker pipe elliptical outlet has fudged little sides pipe must flattened bit back end rounded off front opening stretched down stuff easy work will have no problem tailoring pipe may come grips Peen ends various size ball peen hammers come handy work make other parts tail pipe simply follow paper pattem wooden dummy block method time probably have good idea construct stack particular airplane Filing fitting plus brazing will expert no time Plating Art Yadven Jungmeister airplane have seen chromed exhaust stack plus chrome-plated collector ring Per haps some enterprising builder can braze up aluminum exhaust system oxidizing heat color should change sufficiently look like beat up stainless steel stacks full-scale airplanes want go chrome-plating route bear mind cost mostly prepar ation stack must cleaned highly buffed fine polish plater does 52000 realistic price chromed stack preparation yourself cost will considerably less An area explored conventional stacks some high-heatDecember 1982 163 Catalog $200 MODEL HELICOPTERS USA R/C Helicopter KitsRadios Engi I1C5A(e55oriC5Part5 Major Brands 406 Bellevue Ave Santa Rosa CA 707527-8460 *SIZE*PLANS— No 389 US Male$1450 RC Huge gentle-flying biplane trainer sport Spans 80 60 engine 3-channels Two sheets No 390 Lii Quickie$325 CL Nats-winning Scale Racer HOT 15 power No 391 Orange Box$500 RC Lightweight slope soarer gentle winds hand tow Uses 2-channels No131Gee Bee Model V 40-powered PC stand-off scale great old-time racers$500 No168Simitar PC spectacular flying wing 15 nose-moonted tractor 300 No225Ole Reliable RC 70 nersion 35 old-timer REM controls 1 9-2 25 No239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No253Mitchell 6-25 RC 4-ft rA twin Ace foam panels Well-behaced$350 No259chambermaid FE Bill Henos soperlanioc robber-powered Scale winner$200 No262crashmaster CL crash-proof trainer 2 sizes1 5-30 35-40$125 No291cap 20 40-poweted scale RC French aerobatic plane Low wing tail-dragger 2 sneens$750 No299GeeBee Sr Sportsser PC Yr-scale Haffke 91 power Prototype span 30 ft 2 sheetsSi 175 No302Mini F-i 6 PC Sarpolus 049 ducted fan sport flier 2-ch Balsa wings tail fuse structure$275 No307Pegasus PC Watsons grant sayer sailplane featores flaps spoilers T-rail 166 wingopae..$675 No3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets 5 No 314 Drake II PC Ken Willards flying boat 3-rh. 15-power Fly lane remnoable gear. $375 No323Soper Voodoo CL Fast Combat John J0 features built-up wing fast constructon winsi$300 No325commodore PCTeoaco-class Old-Timer Colon opdates Shereshaws classic 3-ch for29-power 2sh$1000 No326Taylor cob RC Con Stulls Schoolyard-Scale 049s 2-3 Gb Spans 50 in$350 No332Zephyr PC Small 2-ch glider hand-launch tow thermal slope soaring$200 No337Super Akro-i chips PC Scale-like stunter 5-eb 1 smoke caine 40-power 2 sheets$700 No340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosquitobomber.. $400 No343Wasp VI EF Mike Stops Nato-winning Outdoor HLO$i00 No345La Jolita CL i/nA Scale Racer Class II also sport Mouse$i00 No348Onestep PC Trainer has enry forgining flying qualities 3-ch 1 0-25 power$425 No350Electric Spitfire PC Fun-Scale 15/25 electric 20-30 glow 3-cs. spano 6 ft$750 No353Esnitation CL Sleek 45-powered super-Stunrer conrest-proene$400 No354Merlyn PC Ciant 155-in span Sailplane uses 3 PC channels$750 No356Maule Lunar Rocket PC -Scale spans 925 5-rh flaps 12 cc engine$i200 No358Pieces FF Indoor Easy B Rubber-power contest-winner W Van CorderSi 00 No359Black Widow PC Foe-Scale twin two lOs 4-ch Spans 58 WW II night fighter$675 No360Dragon CL Slow Combat winner has foam wing uses 36 power$500 No361Electric coustry Boy FE Record-holding duration craft 02 motor$200 No362Supernat PC Half-A Pylon Pacer/sport flier Aileron elenator control Foam wing$200 No363Tiger Rag CL Sport Stunter biplane 36-power$400 No364Neutroo Star PC Sleek 40-size Pattern flierwith tail draggerretracts enclosed pipe built-up$525 No365Seamaster PC Willards 40-size flying boatfnr4-ch Strap-on gearmakes ira landylanel 2 sheets.Si 100 No366Truant FE Pert all-balsa beginners sport model 020-power$225 No367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft enrension shaft$1275 No368Space Shuffle II PC Larger improned cersion Hun glider 3-ch$550 No369Super Star CL Semi-scale Stunner 35-power Easy build has contest-pronen capanlity 50 No370cAP-2i RC CiantScalnof Frenchanrobaric craftspans lAIn Cuadra power 2 sheersdoc$i400 No371Strato-Streak PC Old-Timer nersion Caramis famous 41 FE design hA power 2-ch$500 No372Neighvion PC Low-wing tn-gear sportoter iSA power 4-ch$500 No373Cassuts II CL Profile Stunrer 35 power Flaps$475 No374Marissa FE Pcbber-powernd sportoter Colden Age tadirion$300 No375SnapshotTwin PC Workhorseutlity/spnrtshipfortwin 35-404-5 ch Foam wings lifts 121b2 shts$1100 No376Aurorue PC Sport/Aerobaric flier 049- 10 power uses 2 3 ch$350 No377Wiogmaster CL Sport-Stunner iaA Profile fuselage sheet wings in/flaps$200 No378Mr Spook Ill PC Fly Sport Pylon Non/Sportsman Patternorsheetsport Uses 4-ch 25-4Opwr$500 No379Moooboow /aA CL idA Combat ship large light super performer$375 No380Witch Hawk 500 PP Hot Class A/B Coo competition shipfor1 5-23 power Nars-winringdesign. $375 No381RB-59 Gladiator PC Eye-catching tribe-gear 15-powered sporrorer Czech uses 3-cs$725 No382Nany Flier FE Robber-power sport flier captures Golden Age flacor Spans 26 in$300 No383callisto82 PC Flynhis sleek Nato-winning Sailplane AMA Mod Standard Unlimited classes$750 No384FW-i90CLBig SO-poweredSportScalemodel ismaoefromcurrugatedcardboarctTwosheers 0 No385Simitar 61 P PC Bnb Ecansfamous design returns asa 60-size Pattern plane Retracts foam wing5550 No366Laser200 PC Sport Scale replica championship Aerobaric flier Uses 40 power 4-5 ch 2 sheets 075 No 387Spectre CL Rig graceful Stunter 40 power Spans 60 France$550 No 388 czech Mate PP Cute low-wing sportsner CC-2 power spans 25V$225 resistance paints Connecting pipes no real substitute flexible metal tubing muffler header tail pipe Silicone tubing works fine very short lengths Curving iS necessary diameter will restricted Neoprene will tually get gummy long-distance telephone conversation John Tatone proved point agreed metal flexible hose way go process conducting tests Unfortunately find item small retail quantities has futile Metal spout material next step header opening large enough accommodate two /2-in-dia connecting pipes tail pipe itself anywhere 3j 7f diameter Plenty room scavenging Good luck functional exhaust system Upholstery work purely illusionary After looks real must real Go custom van shop Ask piece scrap vinyl upholstery material Luckily stuff got indistinguishable material used cus tomize Yadven Bucker Trace template back rest onto piece 1/32 1/16 plywood Next cut out piece Styrofoam ck glue plywood Carefully sand proper contour particular cockpit Cut out piece vinyl couple inches larger excess necessary order pull vinyl stapling plywood backing seat-backs pleats tufts Styrofoam provides clean finished look make realistic strip vinyl folded over both edges after being coated contact-type glue stitched gin away edge entire length careful use glue will dissolve Styrofoam Rubber cement fine use white glues stitched piece contact-cemented over entire edge seat-back will give appearance whole seat stitched stuffed untt best first contact-glue back cushion back rest cockpit contact-glue stitched band over cushion air plane turtleback Its realism its best now sport airplanes easy What upholstery calls buttons tufts must use /2 1 soft urethane foam large-headed pins matching color pins spaced properly go through uphol stery foam ply backingthen bent over other side plywood give proper tension same method used customizing plushing interiors vans deluxe campers very fine drill used 299302307drill plywood panel stems buttons case large-headed pins fed 3433453480through bent over Its simple 3623633640 seat cushions can also constructed using above methods takes carving sanding some Styrofoam lived look can achieved sanding out appro 385386priate areas gluing down vinyl before stretching pulling around staple Just let imagination carry through experimentation might just worth After isnt trying out new ideas what hobby has about Its worth try youre Scale model builder 00000.99090900000@9000000@@00 Circle numbers planss wish order0 S 131168225239 310314323325 326 350353354356 253 259262291 332337340 358 359360361 0 365 366 367 368 369 370 371 372 373 374 375 0 376 377 378 379 380 381382 383 384 0 387388389390391 0 0 NAME Please print carefully Enclosed $ STREET 0 CITY 0 0 0 STATEZIP __________ Price inCludes firat-cissa postage Send check money ordgr paysbie Mode/Aviation AMA 015 Fifteenth St NAN. washington DC 20005 0 0 0 0e*se00e0@s0*A49e0000ee@e00@0e@O 1 64 Model Aviation 0 0 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 815 Hf teenth St w washington DC 20005

The careful eye will detect really isnt same Bucker Jungmeister shown coverwith Miss Kathy Carl isa one-quarter size version Art Yadvens airplane whereas cover Jungmeister has scale one-third Both models spectacular THE STATE sophistication miniature aircraft appointments has grown phenomenally during last decade us old enough appreciate evolution hand-hewn propellers beautiful machine-carved variety today awed various accessories keep appearing shows such WRAM Toledo Despite availability often required go hack old hammer tong method creating unavailable accessory Much time consumed researching aero nautical archives particular era find favorite airplane fans embers earlier youth discover another favorite mind seems spawn favorite airplanes seems no end visions yesteryear like proverbial kid face against candy store window enchantment often followed trepida lions procrastinations eventual abandon ment dream project no attempt present cure excuses develop tum away challenge rather will attempt encourage assure modeler need journeyman particular craft achieve success Trying failing part successful endeavor Remember very first model might ask question people 86 Model Aviation first developed retract system over balanced flywheel Having built Quarter Scale model Art Yadvens Bucker Juogmeister envisioned possibility functional chrome nickelplated exhaust stack one-third-scale ver sionjust like Yadvens big bird challenge Tooling would have simple applicable other miniature aircraft two items Bucker attracted greatest interest 1981 WRAM Show metalwork exhaust stack real istic looking upholstery work Hopefully some procedures outlined will assis tance planning favorite bird Mufflers pipes Some Quadra twin-pipe mufflers available today have large expansion chambers back-pressure no problem Too much pipe may cause engine peak Out may have relegate scale stack its cosmetic value Constant-diameter stacks should present no construction problems However header visible conical elliptical shape transitioning round stack therein lies rub Press dies Begin lightly spot-gluing two pieces hardwood such maple lemon Place piece brown paper between pieces will ensure separation after shaping Dremel tool will come handy roughing-out forming blocks Leave slight taper draft December 1982 87 Side view tfle completed exhaust system tail pipe easy cowl removal front section telescopes rear assembly Support brackets Of/4 plywith 4-40 blind nuts inlaid epoxied fuselage Front view header assembly shows 4-40 machine screws used attach inside mounting flange cowl telescoping header tail pipe plainly visible Hose clamps used fasten silicone tubing muffler 1/2-in header nipples Note mounting flange hardware iaper patterns top sheet metal parts developed around wooden forming blocks Blocks also serve fitting forms locations seams brazed Finished piece right picture top metal-clad-flakeboard female draw die Middle left-hand right-hand forming blocks note guide pins Bottom resulting clamshell pressings header 037-in copper uppermost picture 1/2-in-dia exhaust nipple sub-assembly flange ready brazed header beneath has silver-brazed unit tail pipe bottom brazed sheet metal part completely brazed header before finishing inlet outlet portions will reduce amount stretch required make removal pressed piece easier Shape eyeball symmetry Progressively sand smooth finish Remember isnt balsa fine blade carefully pry pieces apart Mark whether left right-hand Next cut out four pieces -in flakeboard 4 5 piece will serve drawing die stretch copper blank over two male forming blocks fourth piece will used pressure plate placed drawing die Have no fear flakeboard manufactured under tons hydraulic pressure Trace outline forming block center flakeboard jig out opening 1/16in larger necessary clearance metal form between press dies File opening free saw marks Trace outline opening onto 18-gauge sheet steel 6-guage Dural Cut out little shy Leave some filing used cheap manual nibbling tool Epoxy both metal pieces draw die flakeboard align openings Weight everything down cure overnight After curing dress sand opening its final size Further secure metal plates few #4 #6 -in flat-head screws Drill 3/16-in guide pin holes Using drawing die drill jig spot guide pin locations two flakeboards holes must drilled drill press proper alignment Use drill few thousandths under size press-fit guide pins male dies should extend 9/16 beyond surfaces sure draw die slides over male forming die turning over Remember draw die will form both left right-hand pieces too tight open holes up slightly wiregauge drills starting #10 draw die place trace through Onto flakeboard Epoxy forming blocks within outlines Carefully center blocks Check clearances Again cheek left right-hand pressing 20-gauge 037 copper blank size critical less metal press tail pipe opening easier pressing job objective press left right clam shell best downward pressure obtained hydraulic arbor press will take few minutes press pieces beyond needs friendly automotive shop improvising type can probably wonders small hydraulic jack Try concrete floor garage rear axle automobile case sure cover draw die Continued page 162 88 Model Aviation top small clamps hold two halves header exhaust stack ready fluxing silver brazing unit beneath has com pletely brazed surplus metal removed silver-brazed header showing large take area view nearly complete need ing file sand surplus material seams until invisible Finished vinyl seat back contact-glued totheturtleback Notethatgap band stitching glued turtleback seat-back edge Cockpit sides vinyl strips glued over brass tubing Front cockpit bumper fashioned same manner seat back Preparation underway make seat-back cushion JB Special sport biplane Atthis polntwesee paperpattern 1/16 plyback ing ready cut out partially-shaped Styrofoam block will undergo carving give seat-back cushion realistic look Hear view seat back stapler used attaching tightly stretched vinyl plywood backing Pins hold gap band place Front view seat back Its almost ready final assembly planes turtleback Such detailing does wonders realism TANK SYSTEMS can depend flight-ti out models full lank sy8tema Sullivan secret full tank capacity lies unique bubble design fill tank capacity bubble top pockets right amount air tube fitting neatly inside NEV-R-LEAK tank Ixilit last impervious types fuel Choose g capacities 1 oz 16 ozs wide range shapes sizes dimensions fit kind model 46 choose Whats tanks over 4 ozs include Klapper-Klunk klunk pick-ups Now can choose better fuel tank system longer dependable flight-time See dealer today send complete catalog describing styles sizes dimen sions WARNING Modelers Fly t4ea Overhead Power Lines P R 0 D U C T S N C svIH Road PO Box C Widow Grove PA 1090-0W3 215 650OS stick look closely photo can see wing post extensions plugged tissue sockets mounting frame remove model simply unplug posts Assuming model correctly adjusted last time Out will ready go after hooking up prop winding rubber motor Look hack photo stacked models note models interleave has adequate room around So though box full models still mostly empty Indoor sessions Kansas City Roger Schroed er 4111 West 98 St Overland Park KS 66207 has busily organizing Indoor activity Kansas City KS/MO area has announced Fun Fly sessions Westport-Roanoke Com munity Center 3601 Roanoke Rd. Kansas City MO sessions run 3 pm 5 pm October 16 November 13 Decem ber II 1982 January 29 1983 also has plans contests beheld later season live near enough drop visit folks arc nice people Bud Tenor PO Box 545 Richardson TX 75080 Scale Challenges/Agosta Continued page 88 remaining flakeboard pressure plate before pressing As pressure applied copper will stretch around male forming block Stop notice no movement After COMPLETt THIS FORMI AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth $t. NW Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere including Canada Mexico $2400 US Schools $900 US Libraries $1350 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON Dc 20005 separating dies will notice fairly defined radii however will some wrin kles surplus metal Gently hammer out wrinkles steel plate block clam shells should matched up perfectly mated necessary lightly sand flat surface Trim excess metal within 3 radius Cut away openings Dont worry about distortions point Clamp final assembly Silver brazing Apply some Handy Flux inside seam silver solderwill puddle between two pieces trimmed will produce fine sturdy seam Coat small section brazing wire flux As heat applied seam flux will begin melt proper temperature reached solder will follow along path flux puddle seam couple salient points silver solder used process should confused extremely low-melting silver solder sold hardware stores hobby shops melting temperature silver solder purpose near l1000F available refrigeration craft supply houses point header mounting plate must cut out Drill two holes i-in diameter tubes about 1 long Drill mounting holes 4-40 machine screws Leave enough edge distance elastic stop nuts subassembly brazed header mounted cowl finished tail pipe Make appropriate mounting brackets particular airplane Heat source Prestolite acetylene outfit best source heat will produce excellent penetration silver braze couple asbestos shingles will prevent 162 Model Aviation CUTAWAY SNOWING INSTALLATION ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS AMA Membership161 Ace Radio Control43 Aerolite Products148 Aerotrend Products10 Air Design132 AirtronicsInside Front Cover Phase Art126 Americas Hobby Center131 Andrews Aircraft Model Co156 BK Products118 Richard G Barron137 Bavarian Precision Products129 G Bertella140 Dave Brown Products118 Buckeye Balsa129 Byron Originals136 CB Associates51 California Model Imports128 Carlberg Companies132 Carolina-Taffinder136 Johnnie Casburn Mfg Co156 Charlies RC Goodies140 Circus Hobbies142-147 Clark Industries132 Consumers Hobby Corp154-1 55 Coverite123 157 Cox Hobbies75 85 DG Products153 DGM Industries136 DaCa Model Products158 Davey Systems Corp118 Jim Denaro Model Products47 Bob Dively Model Aircraft6 Dodgson Designs84 Du-Bro Products20 Eastcraft Specialty Products84 Eastern Soaring Supplies151 Electric Eagle141 Addis Elmore151 FAI Model Supply160 FHS Supply Inc4 Fab-Tek Inc159 Fiberglass Master82 Flightllne Shirts15 Flyline Models122 Fourmost Products74 Fox Mfg 128 Full Command Systems47 Futaba Corp America21 GT Models150 Carl Goldberg Models129 Gorham Model Products151 153 Great Lakes Model & Mold Co12 Great Planes Model Mfg Co7 Grish Brothers130 Historic Aviation5 Hobby Barn120-121 Hobby Hideaway150 Hobby Horn133 Hobbypoxy Products74 75 Hobby Radio Shop84 Hobby Shack127 Hobby Swap News8 Horizon Model Crafts141 Hunt Models150 Indoor Model Supplies126 Indy RC Sales138-139 International Modeler Show28 J-5Enterprises130 Jomar Products133 K&B Manufacturing11 K&S Engineering128 Kitty Hawk Models74 Kraft Systems36 Kustom Kraftsmanship133 Litco Systems125 Lone Star Models137 MACS Products128 Majestic Models133 George Marsden45 Master Scale37 McDaniel RC Service119 Jim Messers Quality Products129 Midwest Products13 Mills Airplane Models8 Miniature Aircraft Supply157 Model Engineering Norwalk150 Model Helicopter USA163 Model Products Corp83 Model Rectifier Corp side Back Cover Mr Gs Products124 Mutchlers Hobbies134-135 Jerry Nelson & Co160 Nor-Cal Avionics Inc133 OrLine RC Aircraft159 P&G Metal Products128 INDEX ADVERTISERS INDEX Pacer Technology & Resources2 Peck-Polymers76 Pica Products9 Plaza Hobbycraft12 Precision Sanding Tools151 Proctor Enterprises129 Prop Shop76 RAM Radio Control Models158 RC Kits Mfg82 RF Enterprises51 RJL Industries158 RLF Products136 Radio South119 Repla-Tech International151 Rolley Model Products160 Norm Rosenstock163 Roush Mfg Co160 SR Industries82 Saf-Flite Models140 Sailplane Factory137 Satellite City77 Sheldons Hobby Shop83 Sig Mfg Co1 Sonic-Tronics4 Squadron-Signal Publications29 Square Loop Hobby Center140 Sterling Models76 Sullivan Products162 Superwings75 Swanson Assoc136 T&D Fiberglass Specialties140 TML Manufacturing Ltd152 T&T Models140 Tatone Products148 152 Taylor-Craft Ltd151 Tower Hobbies149 US Quadra136 VK Model Aircraft Co119 Vogel Aviation122 WE Technical Services8 Whale Hobbies124 Williams Bros12 Windsor Propeller Co 2 World EnginesBacktover CA Zaic Co156 Zenith Aviation Books19 Nick Ziroll Models83 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX bench burning Also few fire bricks will needed rest brazing work Safety glasses fire extinguisher must Finishing After brazing complete flux must washed off hot water Some will have scraped off Trim file off excess metal until header looks feels like single piece An electric sander handy sure have can cold water nearbythe copper header will get mighty hot header openings can touched up over some round steel stock clamped vise Tail pipe airplanes have single tail pipe located alongside fuselage Some in-line engines have arrangement header may exit outside inside cowl rate opening rear tail pipe appears always elliptical cutting pipe angle effect larger exhaust area little hammering some stretching copper will bring close realism few short pieces cold-rolled steel rods various diameters indispensable forming reshaping tubing bending large radius sheet metal Bucker pipe elliptical outlet has fudged little sides pipe must flattened bit back end rounded off front opening stretched down stuff easy work will have no problem tailoring pipe may come grips Peen ends various size ball peen hammers come handy work make other parts tail pipe simply follow paper pattem wooden dummy block method time probably have good idea construct stack particular airplane Filing fitting plus brazing will expert no time Plating Art Yadven Jungmeister airplane have seen chromed exhaust stack plus chrome-plated collector ring Per haps some enterprising builder can braze up aluminum exhaust system oxidizing heat color should change sufficiently look like beat up stainless steel stacks full-scale airplanes want go chrome-plating route bear mind cost mostly prepar ation stack must cleaned highly buffed fine polish plater does 52000 realistic price chromed stack preparation yourself cost will considerably less An area explored conventional stacks some high-heatDecember 1982 163 Catalog $200 MODEL HELICOPTERS USA R/C Helicopter KitsRadios Engi I1C5A(e55oriC5Part5 Major Brands 406 Bellevue Ave Santa Rosa CA 707527-8460 *SIZE*PLANS— No 389 US Male$1450 RC Huge gentle-flying biplane trainer sport Spans 80 60 engine 3-channels Two sheets No 390 Lii Quickie$325 CL Nats-winning Scale Racer HOT 15 power No 391 Orange Box$500 RC Lightweight slope soarer gentle winds hand tow Uses 2-channels No131Gee Bee Model V 40-powered PC stand-off scale great old-time racers$500 No168Simitar PC spectacular flying wing 15 nose-moonted tractor 300 No225Ole Reliable RC 70 nersion 35 old-timer REM controls 1 9-2 25 No239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No253Mitchell 6-25 RC 4-ft rA twin Ace foam panels Well-behaced$350 No259chambermaid FE Bill Henos soperlanioc robber-powered Scale winner$200 No262crashmaster CL crash-proof trainer 2 sizes1 5-30 35-40$125 No291cap 20 40-poweted scale RC French aerobatic plane Low wing tail-dragger 2 sneens$750 No299GeeBee Sr Sportsser PC Yr-scale Haffke 91 power Prototype span 30 ft 2 sheetsSi 175 No302Mini F-i 6 PC Sarpolus 049 ducted fan sport flier 2-ch Balsa wings tail fuse structure$275 No307Pegasus PC Watsons grant sayer sailplane featores flaps spoilers T-rail 166 wingopae..$675 No3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets 5 No 314 Drake II PC Ken Willards flying boat 3-rh. 15-power Fly lane remnoable gear. $375 No323Soper Voodoo CL Fast Combat John J0 features built-up wing fast constructon winsi$300 No325commodore PCTeoaco-class Old-Timer Colon opdates Shereshaws classic 3-ch for29-power 2sh$1000 No326Taylor cob RC Con Stulls Schoolyard-Scale 049s 2-3 Gb Spans 50 in$350 No332Zephyr PC Small 2-ch glider hand-launch tow thermal slope soaring$200 No337Super Akro-i chips PC Scale-like stunter 5-eb 1 smoke caine 40-power 2 sheets$700 No340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosquitobomber.. $400 No343Wasp VI EF Mike Stops Nato-winning Outdoor HLO$i00 No345La Jolita CL i/nA Scale Racer Class II also sport Mouse$i00 No348Onestep PC Trainer has enry forgining flying qualities 3-ch 1 0-25 power$425 No350Electric Spitfire PC Fun-Scale 15/25 electric 20-30 glow 3-cs. spano 6 ft$750 No353Esnitation CL Sleek 45-powered super-Stunrer conrest-proene$400 No354Merlyn PC Ciant 155-in span Sailplane uses 3 PC channels$750 No356Maule Lunar Rocket PC -Scale spans 925 5-rh flaps 12 cc engine$i200 No358Pieces FF Indoor Easy B Rubber-power contest-winner W Van CorderSi 00 No359Black Widow PC Foe-Scale twin two lOs 4-ch Spans 58 WW II night fighter$675 No360Dragon CL Slow Combat winner has foam wing uses 36 power$500 No361Electric coustry Boy FE Record-holding duration craft 02 motor$200 No362Supernat PC Half-A Pylon Pacer/sport flier Aileron elenator control Foam wing$200 No363Tiger Rag CL Sport Stunter biplane 36-power$400 No364Neutroo Star PC Sleek 40-size Pattern flierwith tail draggerretracts enclosed pipe built-up$525 No365Seamaster PC Willards 40-size flying boatfnr4-ch Strap-on gearmakes ira landylanel 2 sheets.Si 100 No366Truant FE Pert all-balsa beginners sport model 020-power$225 No367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft enrension shaft$1275 No368Space Shuffle II PC Larger improned cersion Hun glider 3-ch$550 No369Super Star CL Semi-scale Stunner 35-power Easy build has contest-pronen capanlity 50 No370cAP-2i RC CiantScalnof Frenchanrobaric craftspans lAIn Cuadra power 2 sheersdoc$i400 No371Strato-Streak PC Old-Timer nersion Caramis famous 41 FE design hA power 2-ch$500 No372Neighvion PC Low-wing tn-gear sportoter iSA power 4-ch$500 No373Cassuts II CL Profile Stunrer 35 power Flaps$475 No374Marissa FE Pcbber-powernd sportoter Colden Age tadirion$300 No375SnapshotTwin PC Workhorseutlity/spnrtshipfortwin 35-404-5 ch Foam wings lifts 121b2 shts$1100 No376Aurorue PC Sport/Aerobaric flier 049- 10 power uses 2 3 ch$350 No377Wiogmaster CL Sport-Stunner iaA Profile fuselage sheet wings in/flaps$200 No378Mr Spook Ill PC Fly Sport Pylon Non/Sportsman Patternorsheetsport Uses 4-ch 25-4Opwr$500 No379Moooboow /aA CL idA Combat ship large light super performer$375 No380Witch Hawk 500 PP Hot Class A/B Coo competition shipfor1 5-23 power Nars-winringdesign. $375 No381RB-59 Gladiator PC Eye-catching tribe-gear 15-powered sporrorer Czech uses 3-cs$725 No382Nany Flier FE Robber-power sport flier captures Golden Age flacor Spans 26 in$300 No383callisto82 PC Flynhis sleek Nato-winning Sailplane AMA Mod Standard Unlimited classes$750 No384FW-i90CLBig SO-poweredSportScalemodel ismaoefromcurrugatedcardboarctTwosheers 0 No385Simitar 61 P PC Bnb Ecansfamous design returns asa 60-size Pattern plane Retracts foam wing5550 No366Laser200 PC Sport Scale replica championship Aerobaric flier Uses 40 power 4-5 ch 2 sheets 075 No 387Spectre CL Rig graceful Stunter 40 power Spans 60 France$550 No 388 czech Mate PP Cute low-wing sportsner CC-2 power spans 25V$225 resistance paints Connecting pipes no real substitute flexible metal tubing muffler header tail pipe Silicone tubing works fine very short lengths Curving iS necessary diameter will restricted Neoprene will tually get gummy long-distance telephone conversation John Tatone proved point agreed metal flexible hose way go process conducting tests Unfortunately find item small retail quantities has futile Metal spout material next step header opening large enough accommodate two /2-in-dia connecting pipes tail pipe itself anywhere 3j 7f diameter Plenty room scavenging Good luck functional exhaust system Upholstery work purely illusionary After looks real must real Go custom van shop Ask piece scrap vinyl upholstery material Luckily stuff got indistinguishable material used cus tomize Yadven Bucker Trace template back rest onto piece 1/32 1/16 plywood Next cut out piece Styrofoam ck glue plywood Carefully sand proper contour particular cockpit Cut out piece vinyl couple inches larger excess necessary order pull vinyl stapling plywood backing seat-backs pleats tufts Styrofoam provides clean finished look make realistic strip vinyl folded over both edges after being coated contact-type glue stitched gin away edge entire length careful use glue will dissolve Styrofoam Rubber cement fine use white glues stitched piece contact-cemented over entire edge seat-back will give appearance whole seat stitched stuffed untt best first contact-glue back cushion back rest cockpit contact-glue stitched band over cushion air plane turtleback Its realism its best now sport airplanes easy What upholstery calls buttons tufts must use /2 1 soft urethane foam large-headed pins matching color pins spaced properly go through uphol stery foam ply backingthen bent over other side plywood give proper tension same method used customizing plushing interiors vans deluxe campers very fine drill used 299302307drill plywood panel stems buttons case large-headed pins fed 3433453480through bent over Its simple 3623633640 seat cushions can also constructed using above methods takes carving sanding some Styrofoam lived look can achieved sanding out appro 385386priate areas gluing down vinyl before stretching pulling around staple Just let imagination carry through experimentation might just worth After isnt trying out new ideas what hobby has about Its worth try youre Scale model builder 00000.99090900000@9000000@@00 Circle numbers planss wish order0 S 131168225239 310314323325 326 350353354356 253 259262291 332337340 358 359360361 0 365 366 367 368 369 370 371 372 373 374 375 0 376 377 378 379 380 381382 383 384 0 387388389390391 0 0 NAME Please print carefully Enclosed $ STREET 0 CITY 0 0 0 STATEZIP __________ Price inCludes firat-cissa postage Send check money ordgr paysbie Mode/Aviation AMA 015 Fifteenth St NAN. washington DC 20005 0 0 0 0e*se00e0@s0*A49e0000ee@e00@0e@O 1 64 Model Aviation 0 0 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 815 Hf teenth St w washington DC 20005