Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery
Edition: Model Aviation - 1993/09
Page Numbers: 43, 44, 45, 46, 54, 55, 56, 57, 58
Here working sport stunter can put idle engines active list get back CL youve away U Fred Brigeman LETS IMAGINE former control line flier has inactive 15 20 years Also imag ine have toying idea returning old pastime wanted buy kit engine accessories go flyingjust like done before Well believe can pick up right left off have good imagination Mainstream commercial support control line part nearly invisible lot products out therewith greater variety areas ever before-but items stocked dealers hard find unless know look Engines power behind hobby relatively plentiful timed routine control line purposes lack required needle valve/venturi combinations Such realities life pastime dominated radio control Dont get wrong ideaRC provides hours enjoyment people good However want fly CL alternative choice must resourceful spirit necessity Falcon 49 developed Falcon 35 designed kitted late Duke Fox back early 60s September 1993 43 ad basis Falcon 49 Duke Fox owned Berkeley Models designed Falcon 35 other models complement popular engines Cu GUT FOR MUFFLER R GYT SIDE 5/A H 1/2 SPRUCE WOTOR WOONTS Full Size Plans AvailableSee Page 176 38 TA ANGULAR OCOCY LEFT SIDE LARGE NYLON --I I CONTROL HORN 3/TO 05/H YWrNIW PROSSTOOGE HOOK SECURE WITH 6-32 ROLlS AS SHOWNPUSOROD EXT COVER /6FUSEYGE WOTTOW3/32 M POSHYODWAKE FROM SCRRPTA TWO ORT ROY LINE ACE WHERE ROD POSSESWITH A/3D PO THROOGH 005/00005 TOSECUAK WITH HAD PRETEST KEY NO FR WWHYADWARE RD SHORN SW TEL NO OAILWHEEL3/H WHEEL 2 1/H WHOF S FOSELAGE PYOSERN-----F/A N PY -1/AC GRArN WYLSY 2 RESO I ROLRHEAoo 1/A N WW WOONT WISH LWDLOS HF POSITON SHORN STAB AND ELEORFOR PATTEON ROWE FROM U/A WCOIUW WYLSA 3/32 RR JOINER FALCON 49 DES GNEO WY FRED WRSEWAN DRAWN HO HOW CARWO 1/16 IN PLYWOOD through Berkeley Models subsidiary Though particularly attractive airplane Duke claimed designed model flying testbed Fox engines day As first sport-stunt project beyond Ringmaster/Rite Streak-type models contest-plane-sized Falcon 35 ticket advanced level Stunt models role has always held special place memories After dormant period yearned build another Falcon 35 alas Phone calls Fox revealed no kits plans available fire factory destroyed existing copy airplane Viewing temporary setback tried drawing plans reproduction using old snapshots pictures available clear side views repeated enlarging photocopier resulted disappointing unacceptable loss detail realized maybe true duplicate wasnt what really needed wanted obvious logical approach design airframe would accept todays yesterdays engines design body resemble old pictures de cided should also plan Fox try different engines airplane altered original goal tried think like Duke Fox set out design nonflapped airplane espe cially attractive capable flying reasonably well wanted something would able perform general maneu vers variety engines up 49 cubic inches doing would satisfy dream 44 Model Aviation ight fuselage begins properly aligned bulkheads F2 checked drafting triangle assure perpendicular fuselage side Author recommends use rod-type jig assure warp-free wing Wing ribs slipped onto rods aligned shown Asymmetrical wing requires different rib spacing half BRARTED OR T/ TAWING PLAN FT SIDE1/TAR SOLID UC RI C A\\3/A LE STOCKBALSA PLANKING Y ON 49 SESIOTLED AT FRED RRIGDMAA STARR MO BOA EARBO 3 NOLON lOSE AELERANK INSIDE VOLE FOR LETS SENSUIAILT GOD OGISIDE HOLE FOR MORE SUNOTIAITTI RIB BLANK COIL IN nURSER BAMARA TA RIUM nUB ALT MA S LACKS TA NAA AMA SAL HOLE CCATIONS FOR AR SANDRIEB AND JO RODS 2 VOLES EOCUI SB 1/A C 3/A TC CAP 1/A 0 1/4 S P AGED RINC SPAR NOB NA BAT ANED BEACRANA PLATFORM SOPPORTS TOP AND BOTTOM RJSSKR LETTALT TA TARASAMAL ARPLAABA CENTER SECTION OS CUTE NE B BEGS 3/A B 1/B SPROCE RCINFORECMENT SPAR RJBRLRMENT1ARARRBAAflA OR RLARAAA RING RIR OUITENE TA BBS REDO WING PLAN RIGHT SIDE set about researching proven airfoil moment combinations articles published over years After shamelessly borrowing some ideas sat down draftsman CAD machine trans form Falcon 49 concept onto paper picture original Falcon 35 rough sketches new model front us arrived compromise turned out modem utilitarian design old-time style outside up-to-date features inside knowing exactly what expect used early CAD drawings cut parts build model pleasantly surprised find constructed heavyduty flying test bed can accept engine larges 60 kept busy trying numerous 40- 46- 49-sized power plants Falcon 49 stable capable carrying fuel loads match engine being used Its easy straightforward project utilizes both old new technologies building airplane can test-run favorite old engines some todays newer RC-based power plants sounds good suggest get started MATERIALS SELECTION materials used build original Falcon 49 purchased hobby shops near home lucky enough have local hobby shop suggest use support no substitute having place pick out own wood other items Secondly good dealers will gladly order control line items can locate supply source special-interest service frequently missing shop-by mail RC-oriented discount houses have dealer near however order catalog Sig Manufacturing Montezuma Iowa As major supporter control line activity Sig reliable source everything needed build Falcon 49 close mailbox UPS truck reasonably sensitive weight selecting balsa Heavy flintlike wood something modeler has kicking around Type CL sport stunt Wingspan 55 inches Engine 40-60 Construction Built-up Coveringlfinish Silkspan iron-on coverings September1993 45 y CARVED SOFT ARSA BLOCK LO GUIDES 1/8 ASASS TURING 1/A STRIPS TOP AND BOTTOM 1/A BALSA WINO TIP PLATES 10 RAGS 1/TA AlAS / K 7 K 1/A CAPSIAPS 1 CC MT REICAT IRCIOBA RCA OPT STARE CARVED SOFT BALSA MECCA Outboard wingtip has hollowed block may opened small drill add lead shot fine trim Inboard wingtip detail shows mounting permanently placed k-inch OD brass tubing leadout guides shop mistakenly used some heftier stuff project just wouldnt wasted Trust meunless want hope lines will hold really heavy airplane through six-to-eight-minute flight have heard about rock string havent use dense wood build deck back house encourage pick lightest best balsa can find job done lighter airplane performs better case lighter airframe will permit mounting heavier engine balancing weights retaining acceptable flight characteristics original model used four-inch-wide stock leading-edge planking order retain true airfoil shape front radius high point spar area wing same result can achieved splicing more-economical pieces threeinch-wide stock one-inch strips make wider planking sure edges have trued straightedge assure good fit same procedure can used 1/ fuselage sides also cut four-inch-wide stock original version decide splice balsa planks cer tain cement used type can sanded easily Speaking cements longtime builders will remember traditional solvent-based model cements once used almost exclusively general construction days other choices such quick bonding cyanoacrylates CyAs water-based aliphatic resins epoxies adhesives mentioned currently available can used build Falcon traditionalist want use Ambroid Sig-Ment Duco Testors fun feel free did cements strong reliable still have familiar odor will recognize years ago safety aware solvent model cements some CyAs some epoxies can give off powerful fumes may harmful Therefore providing good venti lation taking appropriate precautions build essential CONSTRUCTION designers will tell precut parts needed kit model however some builders such find process rather dull tedious undertaking As compromise may find productive cut parts major subassemblies as-needed basis Whatever method used precutting usually starts wing Some modelers have never attempted scratch-build design because think producing wing example might too difficult Actually its matter coming up good set parts lets spend little time some details Several options can used make stack identical ribs constant-chord wing craftsman friend fashions Continued page 54 46 Model Aviation * Barn door wings make wing fuselage alignment easy triangle confirms alignment wing tack-glued place CyA Thirty-minute epoxy used after CyA sets relationship between flying surfaces difference between good-flying airplane dog stabilizer tips must equidistant wing trailing edge wing center section before planking has installed belicrank suspended between plywood platforms spruce stringer gives extra strength abrupt maneuvers Strong practical motor mounts made maple-spruce sandwich save weight over solid maple mounts assembled CyA epoxy securely clamped together Razor plane shapes fuselage prior installing empennage Use triangular stock allows large-radius corners Falcon 49lBrigeman Continued page 46 beautiful brass template uses cut identical ribs time bes away business trips Another method may work bit faster sandwich stack balsa blanks between two thin aluminum templates use large sanding block shape blanks final form plans show template drawings show both wood size needed rib blanks outline ribs selves Cut rectangular dotted outlines plans use rubber cement spray adhesive attach piece rigid material such 015 aluminum sheet can easily fashioned sheet metal cutter aluminum can found ordered hobby source might use scrap aluminum siding Trim rectangular templates precisely dotted outline cutter rough trim other Using precision-trimmed rectangular template guide cut twenty 1/~ sheet rib blanks size Drill two /s-inch holes rectangular templates locations shown Using precision-cut template guide carefully drill similar holes through blanks five time cut out actual rib templates carefully following rib outlines Sandwich 10 rib blanks between metal rib templates bolt stack together firm crushing pressure Place large washers between bolt heads templates help spread load Rough-carve excess balsa sand blanks shape taking care grind excessively metal templates Clearly mark top rib stack felt-tip pen disassemble Repeat procedure second group blanks taking care align both templates right-side-up exactly placed first set Again mark rib tops before disassemble stack Cut out paste finishing rib pattern rigid piece cardboard plastic trim outline cut shaded spar LE locations Use pattern mark ribs Carefully hand-cut remove spar/LE locations required finished should have stack identi cal ribsjust would find kit Assembling wing requires building surface have regularly verified being free twists warps check dont traditional pin trailing edge add leading edge spar method building certainly acceptable however want increase chances having good warp-free wing suggest try using rod-type jig steel-rod jig originally developed Al Rabe discussed Bob Baron Fierce Arrow 86 article Ju ly 1987 Model Aviation Great Planes version jig can ordered through dealer Tower Hobbies takes bit adjustment adapt building rods once try youll have real problem going back old ways have decided try jig /s holes drilled rib blanks will now used locations -inch jig rods make proper size holes use Dremel tool mounted Dremel drill press fixture -inch tapered reamer ever choose keep mind holes must kept same plane must fit snugly rods Make sure index marks added earlier facing up carefully slip ribs onto rods Space ribs shown plans construct wing framework Note Because size jig fixture will building left right panels independently Since wing asym metrical panel slightly longer other make sure rib spacing panel same shown plans panel completely dry carefully remove rods using gentle rotating motion avoid damaging structure both panels complete trim sand center section certain planked portions parallel true Re insert rods remember rotate through central areas both right d left sidesuse rods joining 54 Model Aviation e Pin trailing edge panel building surface measure leading edge height make sure both sides equal Join panels center section spruce stringers balsa splices let dry Remove pins rods add bellerank assembly trailing edge cap wing tips tip blocks center section planking wing now solid straight ready sanding Another expensive jig unit called Adjust-O-Jig allows build wing piece avoid joining process altogether Falcons fuselage wider beefier normal Its designed handle heavy vibration stress imposed varied engine choices serves joining point wing empennage also houses mounting platform removable engine hardware tank structure its job effectively must pay particular attention physical strength proper alignment Begin cutting fuselage sides 1/8 X 4 x 36 stock As mentioned above may splice wood needed narrower sheets strength penalty Similarly cut doublers 1/16 birch plywood Check fit trim doublers necessary cement place usually use 30-minute epoxy job however have seen respected builders such Windy Urtnowski use CyA attach doublers 60-size models choice yours CyA fast light once kicks no second chances Before assembly certain parts match will finish right left sides Cut /s birch plywood bulk heads youll begin see Falcon differs other airplanes Notice motor mounts larger normal constructed hardwood/spruce combination increases attachment area cement fuselage sides suffering weight penalty such large mounts would cause made entirely hardwood Make mounts cementing spruce strips /8 x /2 maple motor mount stock objective mount 5/~ inch high -inch wide spruce portion located below harder maple remains top strength After constructing motor mount sandwich cut out area shown bolt clearance prepare cement mounts fuselage sides Trace template upper fuselage side use draw lay out lines doublers make certain both mounts identically located parallel other Use 30-minute epoxy glue mounts precisely along layout lines clamp firmly place adhesive sets up Once epoxy has set fuselage sides may joined Assemble fuselage both sides two main front bulkheads upside down using flat top area fu selage sides parallel elements contact building surface Some builders use commercial jig assure true alignment however method has proven reliable draw center line building board line up centerlines drawn two main front bulltheads Using blocks balsa pinned board against outside perimeter engine/tank-box area fuselage can kept rigid straight initial cementing also tack-glue tail post time make certain both sides parallel front-to-back set tail post should directly over centerline increase resistance vibration recommend tightly fit piece /2-inch medium balsa crosswise grain between motor mounts closing area between Fl F2 piece acts stress web tank floor provides solid front end allows model handle larger engines remaining formers cut sheet proper width station slip-fit place trimmed sanded correct height tail surfaces made solid wood though extreme light weight necessarily goal aircraft Suflivan SkyLites Are Going Under Cover want know what best dressed wheels will wearing season dont say word Just keep reading Introducing SkyLite Wheel Covers #892 custom wheel covers made especi large-size Sullivan SkyLites Designed give wheels classic rugged look new wheel covers hand crafted lightweightTuminum snap off seconds fit right over wheel collars SkyLite Wheels 3 1/2 5 size Andbecause theyre made Sullivan dont just look good wear good pair built maximum strengt dependabii So before take off put em new SkyLite Wheel Covers SullivanPRODUCTS quality always stylePO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground September 1993 55 should make effort find lightest straightest stock possible empennage interesting note engine/muffler combinations have tried cause airplane either balance right point shown plans slightly nose heavy Falcon dont gamble Make tail feathers light will allow add balance weight later majority fuselage construction conventional except rear aircraft weight box located under horizontal stabilizer allows adjust aircrafts balance point different engines box area lined 1/32 plywood help prevent vibration damage whatever weights select use 1/2-ounce lead putty slugs available RIL Industries product can molded shape doesnt rattle around cause damage infinitely variable amount actually used swiveling tail wheel suggested design well provision stooge-release ring Did say swiveling tail wheel Yes indeed old idea once featured some Sterling stunt kits always thought something different Though seems full-castering tail wheel might let airplane turn in practical use found doesnt affect U EU EEUUUUU DUNE UWU U U U U E BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE U I I I I U Er I * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed SIG CHAMPION 2-STROKE FUEL PINT QUART GALLON $995 $1295 $1495 $1695 $2295 $2795 0% Nitromethane 5% Nitromethane$325$495 10% Nitromethane$3i5$535 15% Nitromethane$395$625 25% Nitromethane $495 $795 35% Nitrometharte $595 $895 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane SIG ALL-CASTOR FUEL 5% Nitromethane 20% CASTOR 10% Nitromethane 20% CASTOR 15% Nitromethane 20% CASTOR 5% Nitromethane 25% CASTOR 10% Nitromethane 25% CASTOR FUEL $1395 $1625 $1295 $1495 $1695 $1395 $1595 THE CHOICE OF CHAMPION FLYERS over 20 years Ski has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 1 000h pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels excep tion All-Castor Fuels contain 50-50 blend Bakers purest M Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourself FREE SHIPPING ON ORDERS OVER $1500 BUT ALL ORDERS ARE SUBJECT TO $6OOIPkg UPS HAZARDOUS MATERIAL SURCHARGEPrices subject change notice Toll Pree Orders 1-690-247-5008 Modelers NotHIng 1-890-524-7805 Latest catalog 8300 SIG MANUFACTURING CO INC.. Montezuma IA 50171 U U U U U U U EU EU EU UK UK flUE EKE U U U I I I I U p U U U U E U I U takeoffs landings freedom tail wheel move direction travel allows actually walk plane back launch point center circle fly grass however feature useful conventional fixed wheel skid preferable FINAL ASSEMBLY subassemblies should now planed carved sanded shape necessary dings other imperfections can filled Goldberg Model Magic filler similar product can found homeimprovement stores objective make surface below finish smooth free major flaws Cut away bottom fuselage wing mounting area shown plans Carefully insert wing its opening check fit may need trim fuselage openings slightly certain wing makes best possible contact fuselage sides careful cut away too much material must make special effort avoid changing incidence wing ability mount wing parallel fuselage sides Fit stabilizer its slotted opening adjust opening stab easily sits parallel fuselage Once satisfied fit wing stab check vertical horizontal alignment triangle usually check spar-to-fuselage area leadingedge-to-fuselage both sides airplane tack wing fuselage CyA once am absolutely certain alignment correct side Hold elevator joining wire place rear slot stabilizer slip stab position Secure joining wire stab install hinges elevators Alignment wing stabilizer next best accomplished measur ing distance rear both sides stab trailing edge wing Sight down fuselage front rear eyeballing relationship stab wing Once certain stab horizontally vertically aligned shim necessary tack-glue stab place allow dry monitor assembly sign twist droop Install weight box tail section reinstall underwing sections fuselage removed earlier Reinforce suit permanently cement wing stab place using light coat 30-minute epoxy Install fuselage top bottom planking carve finish-sand final shape Add canopy turtledeck fin dorsal assemblies rudder allow dry now ready flaish Falcon FINISHING wing structure Falcon 49 designed popular ironon covering materials As appreciates old-time traditional approach used silkspan dope 56 Model Aviation U U U U U U U U U U p I I I I I I U EU Euumi RE U U U U U E original Either method has advantages disadvantages want update knowledge skills may wish try plastics addition engine testing saw project opportunity experiment Sig Epoxolite fillets instead plastic balsa used years ago also tried adding tinting medium clear dope order provide vivid base color airplane adding weight associated pigmented color coats former CL buff coming back hobby airplane just type can used experiment different unfamiliar materials Never afraid try something new engine safe side may want try first inverted flights high enough able safely recover airplane case flameout Once confident models fuel flow general engine characteristics routine maneuvers should no problem keeping spirit promoting control line modeling newcomers article written sufficient detail take almost anyone through rough spots old hands coming back fold trying catch up times experiences building techniques may provide encouragement some new ideas try Always read articles offered magazines both inspiration find new approaches routine things can done have questions about design feature mentioned feel free call 714 667-7178 after 7 pm Pacific time will happy try answer questions may have decide build airplane would honored would send picture finished Falcon 49 album can write and/or send photos Fred Brigeman PO Box 1935 Tustin CA 92681-1935 engines may want use can mounted 3A6 x /8 aluminum pads shown plan pads cut strips available metal supply house identically drilled fit same holes motor mounts using pads its necessary repeatedly redrill mounts themselves want change power plants tank compartment large enough Sullivan eight-ounce clunk dont have much luck clunk-type tanks may also use metal tank standard uniflow construction substitute Kenn Smith Smith Fuel Tanks designed special product just airplane called appropriately enough Falcon 49 tank unit has greater height width volume typical commercially available variety also comes properly vented upright engine configuration Falcon 49 pickup tube Smith tank located allow additional height engine mounting pads Once have added vinyl lettering water transfer decals rare days wheels hardware balance Falcon point shown plans good starting point airplane flew best however may want eventually move balance point forward aft suit own style Remember airplane intended giant-killer Precision Aerobatics model may want expend great deal time precise trimming Sufficient attention paid basic balance will allow gain greatest utility pleasure model FLYING Always pick calm day worst day light breezes test flying Flying unfamiliar airplane high winds gusty conditions invitation disasteryou might well include Hefty bag field box Try simple maneuvers first things look okay may consider something complex like lazy eights inverted flight advised losses power inverted particularly kind head upright-mounted Now Can Workout Any Kind Weather Stay Trim Experienced flyers know extreme temperature changes can make best push-rods expand contract usually means retriniming youre using new Sullivan Precision Gold-N-Rods Built withstand just about anhing Mother Nature can dish out Sullivan Precision has inner rod made carbon fiber composite thermally matched fiber glass wood Which means other rods expanding contracting Precision working like flexible arrow shaft Soyou dont have trim eveiy time temperature changes Sullivan Precision available #580 2-5636 #5812-5648 #584 4-4036 #585 4-4048 nylon push-rods Sullivan Precisions flexible depen ble easy-to-install So fly over dealer check out newIIflflt Sullivans Rain shine theyre ready go7 PRODUCTS workPO Box5l66 Baltimore MD21224 Getting Better Ideas Off Ground September 1993 57 FOX ER OF THE PACK proud owner finest American made model airplane motor available Fox offers RIG control line model airplane motors following sizes 15BB 25 Bushing 25BB 35 Stunt GIL 40 Sport 4OBB 4OBB ABC 45BB Ring 5OBB Ring Quickee 500 6OBB Ring 6OBB ABC 6OBB ABC Pipe 74BB Ring 74BB ABC Fox motors rugged durable provide plenty power leader pack Fly Fox FOX MANUFACTURING COMPANY 5305 Towson Avenue Smith AR 72901 646-1656 501 646-1757 MATERIALS SOURCES have local hobby dealer try buy items him possible no dealer available near cant wont supply needs try following specialty houses sell direct modeler Sig Manufacturing Co 401-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Balsa covering materials CL accessories Smiths Metal Fuel Tanks 521 Jansen Ave San Dimas CA 91773 Tel 714 592-2100 Standard custom-made fuel tanks RIL Industries 1831 Business Center Dr Duarte CA 91010 Tel818 359-0016 Engines lead putty after-run oils Vinylwrite Custom Lettering 16043 Tulsa St Granada Hills CA 91344 Tel NEW $3000 Power Source 6 volt 1200 miliamp GEL CELL Receiver Battery 818 363-7131 Standard custom vinyl lettering Fox Manufacturing Co 5305 Towson Ave Fort Smith AR 72901 Tel 501 646-1656 Engines bellcranks spinners miscellaneous components Hobby Lobby Tel 615 373-1444 Tower Hobbies Tel 800 637-6050 Engines covering materials various usable accessories dynamicldeBolt Continued page 30 neutral stabilitythe flight path will whatever direction plane pointed Obviously makes suitable RC aircraft arrangement also adds efficiency beyond gain lack downthrust additional tail lift required models total lift increased NEW $2500 MAT ESV Vultmutmu Instant Voltage reading under 300 miliamp load Llights indicate battery condition No Guessing Reads transmiter voltage well 48 Nicad battery voltage Nicad users can compare 48 Nicad GELL CELL Once compare youll know choice champions investigations made electric-powered Enduro-style RC models factors would also apply other model types especially true neutral-stability force arrangement actually drew previous Pattern design experience Pattern effective speed control must evaluators always say good Pattern design line flight pilot points short findings applicable model designs What have reported represents two years judicious investigations hope findings have proven interesting may some value Further hope work may inspire own investigations Better flying can through aerodynamics $4900 MAT AC/DC Chargur Perfect charging rate 400 miliamps goes automatic trickle charged LEDs show battery fully charged CANNOT overcharge Use 12 volt battery field car battery provided lighter socket plug Mona Avuin TECHNOVICY 12848 Touchslone Place Palm Beach Gardens FL 33418 Telephone 407 626-6955 FAX 407 626-1588 58 Model Aviation charger designed specifically ou highly successful battery voltmeter check exact condition battery