in s necessary up surviva bility order have flyability cleverly thought out design USAF combat pilot doesnt have make such sacrifices Designer Larry Driskill poses model used win first place l/2A Combat 1985 Hats pressure suit helmet may bit overkill flying Combat model Larry happens Col Air Force Squadron Commander 99th StrategIc Reconnaissance Squadron After having logged hours full-size combat nilot Larry now flies U-2s like pictured behind him _ IF YOU ENJOY flying Control Line Combat will really enjoy flying Combat high-performance model trainer option initial prototype Haiflite built 1983 higher aspect ratio mod el fast flew well too squirrelly wasnt durable enough good contests wider-chord wing planform stronger construction current version solved problems plans presented show compe tition type also alternate trainer version novice pilots trainer torgiving easier fly all-out competition model trainer dif fering parts tail boom center rib nacelle two maple engine mounts longer Other size five parts two versions built same Left Note amount engine offset sanded mount Cox engine has modified Kustom Kraftsmanshlp fine-thread needle valve shims inserted base cylinder See text details Tee Dee mods Right stabilator fitted quick-change hinge arrangement joggle pushrod used control adjustments Strapping tape reinforces 76 Model Aviation Driskill Text John Hunton Evaluate experience objectives choose weapon either case Halflite will deliver super maneuverability small tough package Construction center rib assembly heart model good place begin As modern Combat models components attach center rib component sets design apart its contemporaries also gives Halflite its name Unlike Combat designs strive lichtness cost model Details Stabilator quick-change hinge shown previous page Its constructed %z brass tubing 1-in long uses materials like 36-powered AMA Fast Combat design -in balsa cen ter rib 1/2 x %-in maple engine mounts x %-in spars result half light model tough resilient will penetrate winds render super-light models almost unflyable ability Halflite turn quickly fly fast easy fly comes through clean efficient designand final analysis relative lightness things make model fine Combat weapon Cut center ribs /2-in mediumweight balsa especially careful ar eas maple mounts will glued make truly square cuts Use coping scroll saw cut slot Sig /2A ny lon belicrank slot should provide tight fit bellcrank assembly pivots slot must also provide plenty clearance lead-outs will no chance binding January 1988 77 Left Several iterations Halfite evolved todays design thats shown bot tom lineup Above final version shares ruggedness prototypes corporates substantially chord wing Below Combat too much now youre helping junior birdman get wings version longer moments ticket U Design Larry Halfilte Major Wins 1984 NationalsReno NV First Place Open Driskill 1984 MACA Standings High Point Winner Driskill 1985 NationalsWestover MA First Place Open Driskill 1986 NationalsLake Charles LA First Place Open Pat Wilcox Second Place Open Michael Wilcox First Place Junior Andy Minor biggest differences between model other /zA Combat models big solid center rib Larry says ruggedness reliability essential top Combat model Full-Size Plans Available Page 186 IO 1155 5-r OVTS& DEE 044 35105 /T /INNTALLMTh ITO tIlIIT 7 e eVTOJT ALTIPNAI WIAWNILAM&NT 7APU MCVNTITOPAN7 SOTTM 416cams EIb TEMPLA7 AL EAL FILAA4 SN i4tI IE A5SWV -OA TWAINEE ~ESIN TAIL CA TEMPLATE rAINE #4A COMBAT L55IGNLP PY JLL *2I J7UN7CN J4I S AO WISE HINF TA BOOM WA ITA ATOC Vi] SAL NOES SI0AL - EIaDs E ENOINE LAO EALV4 CNTEE SIP PALANCS POIN4- NAIL LILToWAFWDTIPWEINT 7 OF TPOO SELLCEAN SELLCSATW AVAFT FOAM WW& -STAR3i~IIjIii 111*15flMITATS TIP OIFO OO SS 1Ik 0001 ThMRATE FOE CSE WINO OVig VAAL5A WINO TIP Draftsmans notes addition complete structions building Halflite article cludes tips Larry Driskill engines propeller selection fuel sound philosophy design approach Combat flying Before Larry moved away Washing ton DC area serve country flying U-2s good fortune work him devel oping Geophysical Combat design May 1985 Model Aviation some modelers just have stuff together Larry ot As will see reading text designs fastest lightest flashiestbut among best sound advice herein applicable other model types John Hunton Note maple engine mounts rounded back ends fit center rib prevent stress concen trations Pre-glue both center rib engine mounts white aliphatic glue has thinned part water three parts glue Allow glue diy completely apply another coat glue Assemble parts clamp let assembly dry thoroughly glue completely dry face off both sides assembly sanding block sand three degrees engine offset mount Accurately align Tee Dee 049 centerline center rib Drill %2-in holes 2-56 machine screws will hold engine Countersink board side mounts depth / %-in drill Temporarily mount engine draw 2-56 blind nuts place Remove engine Apply cyanoacrylate glue CyA hold blind nuts securely mounts wont work loose af ter balsa nacelle applied Cut nacelle/stiffener A-in balsa can bit lighter balsa used center rib Glue balsa fair ing place inboard side center rib Glue block /2-in balsa onto front mounts nacelle Use Dremel tool sanding drum radius inside balsa nose block fit engine cleanly Carve sand fuselage assembly streamline faired shape Leave wing mount area flat Drill bellcrank shaft mount bellcrank assembly complete cable lead-outs Trim wing cores plan shape notic ing different wingspans indicated plan Notch inboard core fit fair ing block Glue inboard wing cen ter rib white glue epoxy use white glue allow plenty time curing white glue dries slowly contact Styrofoam Hold wing accurate alignment masking tape Bend end pushrod Z shape required Note pushrod acts bellcrank stop contacts cen ter rib Install pushrod innermost bellcrank hole Drill outboard wing core accept Estes BT-50 rocket tube fuel bladder tube 15/16 spade bit Install -in balsa end plugs glue tube place wing inboard wing/center rib joint has set pre-fit outboard wing assembly clear controls glue position Again secure masking tape until cured Dont forget install pushrod before gluing careful foul part control system glue Test controls frequently during assembly ensure remain free smooth Glue -in ID eyelets proper posi tion inboard tip rib Glue inboard rib place white glue Press two four-penny nails outboard wing core tip Remove Fill holes white glue push nails again leaving heads flush surface tip Glue outboard wing tip place being certain get some glue nail heads will glued rib well Styrofoam Glue spars place being careful ensure good bond between spars center rib Also sure spars fit tightly tip ribs glued se curely certain spars flush wing surfaces Use white glue assembly Hold spars place masking tape until glue cures Sand wings 600-grit paper flat sanding block Blow sanding dust off foam add strapping tape top bottom wing omit tape important keeping wings swinging forward case Halflite has sudden meeting ground Cover wings low-temperature film Sealamin works fine does Fascal Higher-temperature coverings easy use because tendency foam melt before covering sticks cover bottom wings first overlap covering leading edge covering top Cut fuel bladder access drain holes Fuel-proof seal around holes epoxy also use slow-cure ep oxy such Hobbypoxy Formula II seal fuel-proof finish engine mount nacelle Coat tail boom good fuel-proof paint recommend pick fav orite color stick Combat models also cover inboard wing tip same color easy identi fication heat battle Assemble stabilator hinge shown Continued page 173 78 Model Aviation CP VIEW eoe VIEW VSMLEA WINOTIP fuel bladder made up surgical tub ing thats also available Kustom Kraftsmanship California 714/830-5162 especially bubble canopy Hi designed eyeball Gil came over Lockheed May 1952 asked come back Veco new improved terms did course managed stick out until around end 1953 pleased accept Ken Adams bid come down Anaheim join him Hi Johnson Kenhi Im sure glad did Ken nicest guy work Ive ever met thanks Joe Wagner sharing im portant part Stunt history us hope youve enjoyed special glimpse past much have Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Racing/Ballard Continued page 73 Racing St Louis am happy report Racing St Louis area once again upswing Contest Director Gary Frost first contest quite some time October 4 thorough success plans two contests 1988 first Sunday May first Sunday October Gary promoted contest both telephone calls letters effort rewarded competitors three states Mike Greb came way Texas fly Scale Race plus Fast Slow Rat Scale Racing won Bob Oge cx- cellent time 60507 Fast Rat won Larry Dziak Jr time 45165 Larry D Jr also won Slow Rat 604 12 dad won Sport Race 4564 excellent times concrete circles Buder Park topnotch Gary also planning series Speed contests run conjunction 1988 Racing meets Speed people will want put St Louis contests calendars Cloudhusters Club Detroit MI has revival Racing Detroit area ex tremely strong Racing events 1962 through early Seventies Combat less replaced Now Paul Smith colleagues have rejuvenated Racing area Cloudbusters CL Racing contest September 27 Ford axle plant Sterling Heights featured Mouse Racing type Sport Racing have called Slow Combat Racing am enclosing photograph Pauls group taken during September 27 meet Rat/Scale Race control wire construction have several requests concerning proper method making up ends control lines events think best method wrap ping found AMA rule book Con trol Line General section Figure No 1 No 2 concerns proper construction wire ends solid-strand control wires buy typical spindle/spool-and-wire kits use wire included found wire little too thick try drop off about 005 using some fine copper wire electrical shop double-wrap over lap closely spaced turns copper wire least inch Instead soldering wire-end wrappings have using one-hour slow-cure epoxy glue past have several wires break 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other exhibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swap Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peek skill NY 10566 day Ticket Two day Ticket under 12 yrs day STATIC COMPETITION models must operable NC controlled Trophies andlor prizes awarded VCRs awarded two categories BestinShow flying Best-inShow non-flying Top live NC systems tor 1st place category Trophies Other winners WWI SCALE BC BOATS poso awl Ivilatli lfAiSAIYI POST aWl SCALE BC BOATS INan-MIllarAl INar-ClilaIhl PSTTEBN RACINO B/C BOATS SlANT SCALE SOAkS-OFF SCALE OLO TIMERS BC CABS 1/10 sear JONIOR EVENTS BC CARS 1/10 BeAr SPORT BC CARS 1/B scale SLISERS 101501 HELICOPTERS EFOT-IN-OBOW EIreval 011110 duet space aaalabltt obtain pTa-registration Static Competi tion forms write lincirode self-addressed stamped enoelopel Allen Reinhardt 2 Douglas Drive Pleasantville NY 10570 Judging takes place Sunday afternoon DIRECTIONS TOt Tonke, Racewup localed SOatflen westoheure CoanIn along tIle Etutelt Notlbsand Side 01 thu New Tonk Srale Thuwal 11-871 I-ST Soatn Eot 4 Seoioe oad 30 Inutfic light Tan left love Torawuni toenre nukinuueu PROM THE SOUTH I-ST Nslth Exit 2 St let tattle lluht laIn sent nakinueee soldering epoxy seems work very well no heat stress wire sol dering clear epoxy wires can visually inspected time used can avoid kinking lines plas tic storage reels installing -in-long 2-56 bolt through side reel head inside near line-slot side using protruding end anchor line clips wind up lines eliminates need bend lines through slot order hitch line clips built-in plastic tabs As always comments photos solic tted John C Ballard 10102 Kimblewick Dr Louis ville KY 40223 Half ite/Driski II Continued page 78 Glue %2 brass tubing place thick CyA double-glue 5-mm epoxy Apply strapping tape Note tape Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-op models Registration models will start 830 am morning SWAP SHOP WRAMs Swap Shop has become malor show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregistration forms receive forms send self-addressed stumped envelope John Isbister 4 Devon Rd. Lurchmont NY ioss SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further information write enclose self-addressed stumped envelope call Jerry Judge T Nancy Road Srewsfer NY 10509 514-275-2717 RADIO AEROMODELERS INC 21/2D 10 AM 6 PM used beef up area under control horn Also note stabilator offset toward outside circle Cover stabilator plastic film Remove covering center body boom fits glue boom place 5-mm epoxy joint has cured install stabilator hinge tube CyA being careful align properly will level wing Mount stabilator A6 wire hinge certain movement free unre stricted Note dogleg bend pushrod throw adjustment also Z-bend elevator horn pre fer simple setup much break come loose Also stabilator readily replaceable case trouble Sta bilator adjustment made changing dogleg Trainer version construction same both models except January 1988 173 trainers longer moments nose tail Substitute longer center rib maple engine mounts nacelle tail boom shown plan will result mod el bit stablebut still ma neuverable fun fly long nose room enough Perfect No 19 fuel tank wish run hard tank suction system Compromises Perhaps unusual section put Combat model construc tion article once read aircraft designs product compromises tradeoffs full-scale aviation world have seen evidence thesis An example U-2 landing gear system Editor Lorry currently U-2 pilot U-2 has two landing gearwhich tandem arrangement both centerline aircraft Compared weight typi cal tricycle arrangement weight wheel assembly has eliminated weight saved has increased performance U-2 centerline gear however U-2 much challenging land tricycle-gear planes Compromises tradeoffs also come play during construction Half lite will have make some decisions between top performance durability first choice involves wing spars 1 Use spruce spars strong hea vier balsa 2 Use balsa spars youll have light weight may break 3 Use balsa spars carbon fiber reinforce ment center eight inches span wing will light strong expensive difficult build next choice engine mounts % x -in mounts shown plan can shaved down /16 x still adequately strong trou ble build however Finally wing cores can lightened hollowing out hot-wire techniques Again will lose strength especially thin cores less /l6 using three lightening choices will save about one-half ounce However machine will con siderably less durable Fuel system Fuel bladders made thin-wall surgical tubing Kustom Krafts manship Part #484 Keep simple just tying knot back end rubber-&UIF&CEJ Ige -a nrO AMERICAN JR onr ,m CAMPBELL T RITE DUBRO EASY BUILT MODEL5 FLYLINE FOX BERG DUBOIS LOW K&B MICRO X OS MAX RA IPECK-POLYMER ECT MODELS ISEAGLEN STERLING IVAN SUPER TIGER INDER FLITE LER 3WILLIAMSS PRODUCTS RS ESTES MODEL ROCKETS goad SI Ia Cub Check ow Stamps fec 31 page tabloid size DISCOUNT Catalog 900 illustrationsover 700 Kits go choose MAILOADER PHONEORDER IN STORE PENN VALLEY HAlEY CENTER 817 1 Main St Lanadalula 19446 banding surgical tubing length fuel line has 3A6-in length 3A2 ID brass tubing inside prevent collapse tube uninflated bladder needs 1 /2 long knot rubberband hold fuel four five minutes flight Engine Cox Tee Dee engine can run box-stock good results However few simple modifications will result powerful reliable-running engine single important modification replace needle valve assembly having finer thread Kustom Kraftsmanship Ace RC assemblies both produce good results set cylinder shims collar KK will allow adjust cylinder timing optimum power Follow instructions provided shims Drilling out intake venturi per Tee Dee instructions will boost top power However bigger venturi opening tougher set needle valve prop erly greater likelihood poor consistency Also combination higher-nitro fuel wide open venturi will result greater fuel consumption have used both Cox GloBee plugs good results easy over-com press engine suggest begin three four copper gaskets under whichever plug choose needle valve settings overly sensitive engine becomes difficult start add another gasket getting good runs con sistent needle settings remove gaskets time until get maximum power starting needle-valve-setting problems Control lines use lighter lines 012 steel cable AMA Combat rules call 35-ft line length centerline air craft centerline handle prac tice can slow things down bit using longer lines 40 ft maximum trainer version will fly well 40-ft lines will have add extra nail outboard wing tip weight Propeller three Nationals wins Halflite use Cox black 5 x 3 174 Model Aviation props dont look very trick tough apparently efficient just super model also have good performance Tornado 5 x 3 props can slow model bit 6 x 3 prop fuel economy will improve Fuel Small /2A engines least bit forgiving dirty otherwise contami nated fuel Use fresh fuel filter least onceeither coming out can going bladder have great re sults 33 %-nitro fuel Cox Racing Fuel also gives good results Make sure what ever fuel choose has least 20% oil minimum 5% castor oil Flying have flying Control Line Combat over 25 years have also logged over 900 combat hours Forward Air Control pilot southeast Asia have found Rule No 1 Forward Air Control business Rule No 1 success CL Combat same run ground Other axioms CL Combat success ThERE ARE NO SECRETS LIQUID FINISHES MASTER MODELING DESIGNING SCRATCH BUILDING 1 Practice Practice alone practice flying buddies practice entering contest can practice un til flying becomes second nature 2 Keep flight ground equip ment simple have minor trouble equipment practice will nearly always have major trouble heat battle 3 Dont sacrifice reliability consisten cy minor performance gains par ticularly true engine involved Combat speed event Running ultra-high-nitro fuel high-compression head wild port timing gain couple mph may make plane crowd pleaser extra performance comes expense reliability consistency will win Combat matches 4 Know ground rules Read AMA rule book dont make mistakes ignorance rules Flying 1/ZA Combat successfully involves hard work disciplines preparation engines practice etc Halflite design TOMS TECHMOUES MONOKOTING FLYING AROUND OLD TIME U CONTROL HANDBOOK J ALL ABOUT ENGINES MORE COMING SiO95 EACH HARRY HIGLEY & SONS INC P 0 BOX 532 GLENWOOD ILL 60425 proven model help build Com bat success upon Tee Dee engines engine parts thin-walled fuel bladder tubing avail able Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Styro foam wing cores Halfilte other Nationals-winning designs available Core House 760 Waltonville Rd Hummelstown PA 17036 FFWC General/Cowley Continued page 89 does interest Free Flight continue flourish face generally wid ening scope model flying Much appeal can attributed simple purity beauty model released fly free responding changing weather conditions personal level infinite scope performance increase through aerodynamic experimentation structural refinements well-engineered design above ultimate level endeavor opportunity participate rewarding athletic event highest level sportsmanship unrestricted exchange friendship technical information between fellow com petitors around world ex plains enduring hold category competition FFWC Gliders/Cowley Continued page 91 uses full-span wing molds made stable mixture sand epoxy framed metal tubing Orels models ex ceptionally high standard such tech niques now being applied Free Flight models interesting speculate whether builder-of-the-model rule will day dropped has already happened RC classes traditional balsa D-box leading edge airframes continue norm competitors out extensive use reinforcement usually form carbon-fiber wing spar caps individual upper lower rib 176 Model Aviation TheNN. cFoldingBALSA WOOS wThg- A-i INTERCEPTOR Ready Fly $695 U-build Kit $495 Note Pleaseadd$3forP&Hforlat3modela. Add 10% price additional model Aw0~JA AIRCRAFT COMPANY PO Box65132 Portland OR 97268
Edition: Model Aviation - 1988/01
Page Numbers: 76, 77, 78, 173, 174, 176
in s necessary up surviva bility order have flyability cleverly thought out design USAF combat pilot doesnt have make such sacrifices Designer Larry Driskill poses model used win first place l/2A Combat 1985 Hats pressure suit helmet may bit overkill flying Combat model Larry happens Col Air Force Squadron Commander 99th StrategIc Reconnaissance Squadron After having logged hours full-size combat nilot Larry now flies U-2s like pictured behind him _ IF YOU ENJOY flying Control Line Combat will really enjoy flying Combat high-performance model trainer option initial prototype Haiflite built 1983 higher aspect ratio mod el fast flew well too squirrelly wasnt durable enough good contests wider-chord wing planform stronger construction current version solved problems plans presented show compe tition type also alternate trainer version novice pilots trainer torgiving easier fly all-out competition model trainer dif fering parts tail boom center rib nacelle two maple engine mounts longer Other size five parts two versions built same Left Note amount engine offset sanded mount Cox engine has modified Kustom Kraftsmanshlp fine-thread needle valve shims inserted base cylinder See text details Tee Dee mods Right stabilator fitted quick-change hinge arrangement joggle pushrod used control adjustments Strapping tape reinforces 76 Model Aviation Driskill Text John Hunton Evaluate experience objectives choose weapon either case Halflite will deliver super maneuverability small tough package Construction center rib assembly heart model good place begin As modern Combat models components attach center rib component sets design apart its contemporaries also gives Halflite its name Unlike Combat designs strive lichtness cost model Details Stabilator quick-change hinge shown previous page Its constructed %z brass tubing 1-in long uses materials like 36-powered AMA Fast Combat design -in balsa cen ter rib 1/2 x %-in maple engine mounts x %-in spars result half light model tough resilient will penetrate winds render super-light models almost unflyable ability Halflite turn quickly fly fast easy fly comes through clean efficient designand final analysis relative lightness things make model fine Combat weapon Cut center ribs /2-in mediumweight balsa especially careful ar eas maple mounts will glued make truly square cuts Use coping scroll saw cut slot Sig /2A ny lon belicrank slot should provide tight fit bellcrank assembly pivots slot must also provide plenty clearance lead-outs will no chance binding January 1988 77 Left Several iterations Halfite evolved todays design thats shown bot tom lineup Above final version shares ruggedness prototypes corporates substantially chord wing Below Combat too much now youre helping junior birdman get wings version longer moments ticket U Design Larry Halfilte Major Wins 1984 NationalsReno NV First Place Open Driskill 1984 MACA Standings High Point Winner Driskill 1985 NationalsWestover MA First Place Open Driskill 1986 NationalsLake Charles LA First Place Open Pat Wilcox Second Place Open Michael Wilcox First Place Junior Andy Minor biggest differences between model other /zA Combat models big solid center rib Larry says ruggedness reliability essential top Combat model Full-Size Plans Available Page 186 IO 1155 5-r OVTS& DEE 044 35105 /T /INNTALLMTh ITO tIlIIT 7 e eVTOJT ALTIPNAI WIAWNILAM&NT 7APU MCVNTITOPAN7 SOTTM 416cams EIb TEMPLA7 AL EAL FILAA4 SN i4tI IE A5SWV -OA TWAINEE ~ESIN TAIL CA TEMPLATE rAINE #4A COMBAT L55IGNLP PY JLL *2I J7UN7CN J4I S AO WISE HINF TA BOOM WA ITA ATOC Vi] SAL NOES SI0AL - EIaDs E ENOINE LAO EALV4 CNTEE SIP PALANCS POIN4- NAIL LILToWAFWDTIPWEINT 7 OF TPOO SELLCEAN SELLCSATW AVAFT FOAM WW& -STAR3i~IIjIii 111*15flMITATS TIP OIFO OO SS 1Ik 0001 ThMRATE FOE CSE WINO OVig VAAL5A WINO TIP Draftsmans notes addition complete structions building Halflite article cludes tips Larry Driskill engines propeller selection fuel sound philosophy design approach Combat flying Before Larry moved away Washing ton DC area serve country flying U-2s good fortune work him devel oping Geophysical Combat design May 1985 Model Aviation some modelers just have stuff together Larry ot As will see reading text designs fastest lightest flashiestbut among best sound advice herein applicable other model types John Hunton Note maple engine mounts rounded back ends fit center rib prevent stress concen trations Pre-glue both center rib engine mounts white aliphatic glue has thinned part water three parts glue Allow glue diy completely apply another coat glue Assemble parts clamp let assembly dry thoroughly glue completely dry face off both sides assembly sanding block sand three degrees engine offset mount Accurately align Tee Dee 049 centerline center rib Drill %2-in holes 2-56 machine screws will hold engine Countersink board side mounts depth / %-in drill Temporarily mount engine draw 2-56 blind nuts place Remove engine Apply cyanoacrylate glue CyA hold blind nuts securely mounts wont work loose af ter balsa nacelle applied Cut nacelle/stiffener A-in balsa can bit lighter balsa used center rib Glue balsa fair ing place inboard side center rib Glue block /2-in balsa onto front mounts nacelle Use Dremel tool sanding drum radius inside balsa nose block fit engine cleanly Carve sand fuselage assembly streamline faired shape Leave wing mount area flat Drill bellcrank shaft mount bellcrank assembly complete cable lead-outs Trim wing cores plan shape notic ing different wingspans indicated plan Notch inboard core fit fair ing block Glue inboard wing cen ter rib white glue epoxy use white glue allow plenty time curing white glue dries slowly contact Styrofoam Hold wing accurate alignment masking tape Bend end pushrod Z shape required Note pushrod acts bellcrank stop contacts cen ter rib Install pushrod innermost bellcrank hole Drill outboard wing core accept Estes BT-50 rocket tube fuel bladder tube 15/16 spade bit Install -in balsa end plugs glue tube place wing inboard wing/center rib joint has set pre-fit outboard wing assembly clear controls glue position Again secure masking tape until cured Dont forget install pushrod before gluing careful foul part control system glue Test controls frequently during assembly ensure remain free smooth Glue -in ID eyelets proper posi tion inboard tip rib Glue inboard rib place white glue Press two four-penny nails outboard wing core tip Remove Fill holes white glue push nails again leaving heads flush surface tip Glue outboard wing tip place being certain get some glue nail heads will glued rib well Styrofoam Glue spars place being careful ensure good bond between spars center rib Also sure spars fit tightly tip ribs glued se curely certain spars flush wing surfaces Use white glue assembly Hold spars place masking tape until glue cures Sand wings 600-grit paper flat sanding block Blow sanding dust off foam add strapping tape top bottom wing omit tape important keeping wings swinging forward case Halflite has sudden meeting ground Cover wings low-temperature film Sealamin works fine does Fascal Higher-temperature coverings easy use because tendency foam melt before covering sticks cover bottom wings first overlap covering leading edge covering top Cut fuel bladder access drain holes Fuel-proof seal around holes epoxy also use slow-cure ep oxy such Hobbypoxy Formula II seal fuel-proof finish engine mount nacelle Coat tail boom good fuel-proof paint recommend pick fav orite color stick Combat models also cover inboard wing tip same color easy identi fication heat battle Assemble stabilator hinge shown Continued page 173 78 Model Aviation CP VIEW eoe VIEW VSMLEA WINOTIP fuel bladder made up surgical tub ing thats also available Kustom Kraftsmanship California 714/830-5162 especially bubble canopy Hi designed eyeball Gil came over Lockheed May 1952 asked come back Veco new improved terms did course managed stick out until around end 1953 pleased accept Ken Adams bid come down Anaheim join him Hi Johnson Kenhi Im sure glad did Ken nicest guy work Ive ever met thanks Joe Wagner sharing im portant part Stunt history us hope youve enjoyed special glimpse past much have Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Racing/Ballard Continued page 73 Racing St Louis am happy report Racing St Louis area once again upswing Contest Director Gary Frost first contest quite some time October 4 thorough success plans two contests 1988 first Sunday May first Sunday October Gary promoted contest both telephone calls letters effort rewarded competitors three states Mike Greb came way Texas fly Scale Race plus Fast Slow Rat Scale Racing won Bob Oge cx- cellent time 60507 Fast Rat won Larry Dziak Jr time 45165 Larry D Jr also won Slow Rat 604 12 dad won Sport Race 4564 excellent times concrete circles Buder Park topnotch Gary also planning series Speed contests run conjunction 1988 Racing meets Speed people will want put St Louis contests calendars Cloudhusters Club Detroit MI has revival Racing Detroit area ex tremely strong Racing events 1962 through early Seventies Combat less replaced Now Paul Smith colleagues have rejuvenated Racing area Cloudbusters CL Racing contest September 27 Ford axle plant Sterling Heights featured Mouse Racing type Sport Racing have called Slow Combat Racing am enclosing photograph Pauls group taken during September 27 meet Rat/Scale Race control wire construction have several requests concerning proper method making up ends control lines events think best method wrap ping found AMA rule book Con trol Line General section Figure No 1 No 2 concerns proper construction wire ends solid-strand control wires buy typical spindle/spool-and-wire kits use wire included found wire little too thick try drop off about 005 using some fine copper wire electrical shop double-wrap over lap closely spaced turns copper wire least inch Instead soldering wire-end wrappings have using one-hour slow-cure epoxy glue past have several wires break 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other exhibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swap Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peek skill NY 10566 day Ticket Two day Ticket under 12 yrs day STATIC COMPETITION models must operable NC controlled Trophies andlor prizes awarded VCRs awarded two categories BestinShow flying Best-inShow non-flying Top live NC systems tor 1st place category Trophies Other winners WWI SCALE BC BOATS poso awl Ivilatli lfAiSAIYI POST aWl SCALE BC BOATS INan-MIllarAl INar-ClilaIhl PSTTEBN RACINO B/C BOATS SlANT SCALE SOAkS-OFF SCALE OLO TIMERS BC CABS 1/10 sear JONIOR EVENTS BC CARS 1/10 BeAr SPORT BC CARS 1/B scale SLISERS 101501 HELICOPTERS EFOT-IN-OBOW EIreval 011110 duet space aaalabltt obtain pTa-registration Static Competi tion forms write lincirode self-addressed stamped enoelopel Allen Reinhardt 2 Douglas Drive Pleasantville NY 10570 Judging takes place Sunday afternoon DIRECTIONS TOt Tonke, Racewup localed SOatflen westoheure CoanIn along tIle Etutelt Notlbsand Side 01 thu New Tonk Srale Thuwal 11-871 I-ST Soatn Eot 4 Seoioe oad 30 Inutfic light Tan left love Torawuni toenre nukinuueu PROM THE SOUTH I-ST Nslth Exit 2 St let tattle lluht laIn sent nakinueee soldering epoxy seems work very well no heat stress wire sol dering clear epoxy wires can visually inspected time used can avoid kinking lines plas tic storage reels installing -in-long 2-56 bolt through side reel head inside near line-slot side using protruding end anchor line clips wind up lines eliminates need bend lines through slot order hitch line clips built-in plastic tabs As always comments photos solic tted John C Ballard 10102 Kimblewick Dr Louis ville KY 40223 Half ite/Driski II Continued page 78 Glue %2 brass tubing place thick CyA double-glue 5-mm epoxy Apply strapping tape Note tape Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-op models Registration models will start 830 am morning SWAP SHOP WRAMs Swap Shop has become malor show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregistration forms receive forms send self-addressed stumped envelope John Isbister 4 Devon Rd. Lurchmont NY ioss SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further information write enclose self-addressed stumped envelope call Jerry Judge T Nancy Road Srewsfer NY 10509 514-275-2717 RADIO AEROMODELERS INC 21/2D 10 AM 6 PM used beef up area under control horn Also note stabilator offset toward outside circle Cover stabilator plastic film Remove covering center body boom fits glue boom place 5-mm epoxy joint has cured install stabilator hinge tube CyA being careful align properly will level wing Mount stabilator A6 wire hinge certain movement free unre stricted Note dogleg bend pushrod throw adjustment also Z-bend elevator horn pre fer simple setup much break come loose Also stabilator readily replaceable case trouble Sta bilator adjustment made changing dogleg Trainer version construction same both models except January 1988 173 trainers longer moments nose tail Substitute longer center rib maple engine mounts nacelle tail boom shown plan will result mod el bit stablebut still ma neuverable fun fly long nose room enough Perfect No 19 fuel tank wish run hard tank suction system Compromises Perhaps unusual section put Combat model construc tion article once read aircraft designs product compromises tradeoffs full-scale aviation world have seen evidence thesis An example U-2 landing gear system Editor Lorry currently U-2 pilot U-2 has two landing gearwhich tandem arrangement both centerline aircraft Compared weight typi cal tricycle arrangement weight wheel assembly has eliminated weight saved has increased performance U-2 centerline gear however U-2 much challenging land tricycle-gear planes Compromises tradeoffs also come play during construction Half lite will have make some decisions between top performance durability first choice involves wing spars 1 Use spruce spars strong hea vier balsa 2 Use balsa spars youll have light weight may break 3 Use balsa spars carbon fiber reinforce ment center eight inches span wing will light strong expensive difficult build next choice engine mounts % x -in mounts shown plan can shaved down /16 x still adequately strong trou ble build however Finally wing cores can lightened hollowing out hot-wire techniques Again will lose strength especially thin cores less /l6 using three lightening choices will save about one-half ounce However machine will con siderably less durable Fuel system Fuel bladders made thin-wall surgical tubing Kustom Krafts manship Part #484 Keep simple just tying knot back end rubber-&UIF&CEJ Ige -a nrO AMERICAN JR onr ,m CAMPBELL T RITE DUBRO EASY BUILT MODEL5 FLYLINE FOX BERG DUBOIS LOW K&B MICRO X OS MAX RA IPECK-POLYMER ECT MODELS ISEAGLEN STERLING IVAN SUPER TIGER INDER FLITE LER 3WILLIAMSS PRODUCTS RS ESTES MODEL ROCKETS goad SI Ia Cub Check ow Stamps fec 31 page tabloid size DISCOUNT Catalog 900 illustrationsover 700 Kits go choose MAILOADER PHONEORDER IN STORE PENN VALLEY HAlEY CENTER 817 1 Main St Lanadalula 19446 banding surgical tubing length fuel line has 3A6-in length 3A2 ID brass tubing inside prevent collapse tube uninflated bladder needs 1 /2 long knot rubberband hold fuel four five minutes flight Engine Cox Tee Dee engine can run box-stock good results However few simple modifications will result powerful reliable-running engine single important modification replace needle valve assembly having finer thread Kustom Kraftsmanship Ace RC assemblies both produce good results set cylinder shims collar KK will allow adjust cylinder timing optimum power Follow instructions provided shims Drilling out intake venturi per Tee Dee instructions will boost top power However bigger venturi opening tougher set needle valve prop erly greater likelihood poor consistency Also combination higher-nitro fuel wide open venturi will result greater fuel consumption have used both Cox GloBee plugs good results easy over-com press engine suggest begin three four copper gaskets under whichever plug choose needle valve settings overly sensitive engine becomes difficult start add another gasket getting good runs con sistent needle settings remove gaskets time until get maximum power starting needle-valve-setting problems Control lines use lighter lines 012 steel cable AMA Combat rules call 35-ft line length centerline air craft centerline handle prac tice can slow things down bit using longer lines 40 ft maximum trainer version will fly well 40-ft lines will have add extra nail outboard wing tip weight Propeller three Nationals wins Halflite use Cox black 5 x 3 174 Model Aviation props dont look very trick tough apparently efficient just super model also have good performance Tornado 5 x 3 props can slow model bit 6 x 3 prop fuel economy will improve Fuel Small /2A engines least bit forgiving dirty otherwise contami nated fuel Use fresh fuel filter least onceeither coming out can going bladder have great re sults 33 %-nitro fuel Cox Racing Fuel also gives good results Make sure what ever fuel choose has least 20% oil minimum 5% castor oil Flying have flying Control Line Combat over 25 years have also logged over 900 combat hours Forward Air Control pilot southeast Asia have found Rule No 1 Forward Air Control business Rule No 1 success CL Combat same run ground Other axioms CL Combat success ThERE ARE NO SECRETS LIQUID FINISHES MASTER MODELING DESIGNING SCRATCH BUILDING 1 Practice Practice alone practice flying buddies practice entering contest can practice un til flying becomes second nature 2 Keep flight ground equip ment simple have minor trouble equipment practice will nearly always have major trouble heat battle 3 Dont sacrifice reliability consisten cy minor performance gains par ticularly true engine involved Combat speed event Running ultra-high-nitro fuel high-compression head wild port timing gain couple mph may make plane crowd pleaser extra performance comes expense reliability consistency will win Combat matches 4 Know ground rules Read AMA rule book dont make mistakes ignorance rules Flying 1/ZA Combat successfully involves hard work disciplines preparation engines practice etc Halflite design TOMS TECHMOUES MONOKOTING FLYING AROUND OLD TIME U CONTROL HANDBOOK J ALL ABOUT ENGINES MORE COMING SiO95 EACH HARRY HIGLEY & SONS INC P 0 BOX 532 GLENWOOD ILL 60425 proven model help build Com bat success upon Tee Dee engines engine parts thin-walled fuel bladder tubing avail able Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Styro foam wing cores Halfilte other Nationals-winning designs available Core House 760 Waltonville Rd Hummelstown PA 17036 FFWC General/Cowley Continued page 89 does interest Free Flight continue flourish face generally wid ening scope model flying Much appeal can attributed simple purity beauty model released fly free responding changing weather conditions personal level infinite scope performance increase through aerodynamic experimentation structural refinements well-engineered design above ultimate level endeavor opportunity participate rewarding athletic event highest level sportsmanship unrestricted exchange friendship technical information between fellow com petitors around world ex plains enduring hold category competition FFWC Gliders/Cowley Continued page 91 uses full-span wing molds made stable mixture sand epoxy framed metal tubing Orels models ex ceptionally high standard such tech niques now being applied Free Flight models interesting speculate whether builder-of-the-model rule will day dropped has already happened RC classes traditional balsa D-box leading edge airframes continue norm competitors out extensive use reinforcement usually form carbon-fiber wing spar caps individual upper lower rib 176 Model Aviation TheNN. cFoldingBALSA WOOS wThg- A-i INTERCEPTOR Ready Fly $695 U-build Kit $495 Note Pleaseadd$3forP&Hforlat3modela. Add 10% price additional model Aw0~JA AIRCRAFT COMPANY PO Box65132 Portland OR 97268
Edition: Model Aviation - 1988/01
Page Numbers: 76, 77, 78, 173, 174, 176
in s necessary up surviva bility order have flyability cleverly thought out design USAF combat pilot doesnt have make such sacrifices Designer Larry Driskill poses model used win first place l/2A Combat 1985 Hats pressure suit helmet may bit overkill flying Combat model Larry happens Col Air Force Squadron Commander 99th StrategIc Reconnaissance Squadron After having logged hours full-size combat nilot Larry now flies U-2s like pictured behind him _ IF YOU ENJOY flying Control Line Combat will really enjoy flying Combat high-performance model trainer option initial prototype Haiflite built 1983 higher aspect ratio mod el fast flew well too squirrelly wasnt durable enough good contests wider-chord wing planform stronger construction current version solved problems plans presented show compe tition type also alternate trainer version novice pilots trainer torgiving easier fly all-out competition model trainer dif fering parts tail boom center rib nacelle two maple engine mounts longer Other size five parts two versions built same Left Note amount engine offset sanded mount Cox engine has modified Kustom Kraftsmanshlp fine-thread needle valve shims inserted base cylinder See text details Tee Dee mods Right stabilator fitted quick-change hinge arrangement joggle pushrod used control adjustments Strapping tape reinforces 76 Model Aviation Driskill Text John Hunton Evaluate experience objectives choose weapon either case Halflite will deliver super maneuverability small tough package Construction center rib assembly heart model good place begin As modern Combat models components attach center rib component sets design apart its contemporaries also gives Halflite its name Unlike Combat designs strive lichtness cost model Details Stabilator quick-change hinge shown previous page Its constructed %z brass tubing 1-in long uses materials like 36-powered AMA Fast Combat design -in balsa cen ter rib 1/2 x %-in maple engine mounts x %-in spars result half light model tough resilient will penetrate winds render super-light models almost unflyable ability Halflite turn quickly fly fast easy fly comes through clean efficient designand final analysis relative lightness things make model fine Combat weapon Cut center ribs /2-in mediumweight balsa especially careful ar eas maple mounts will glued make truly square cuts Use coping scroll saw cut slot Sig /2A ny lon belicrank slot should provide tight fit bellcrank assembly pivots slot must also provide plenty clearance lead-outs will no chance binding January 1988 77 Left Several iterations Halfite evolved todays design thats shown bot tom lineup Above final version shares ruggedness prototypes corporates substantially chord wing Below Combat too much now youre helping junior birdman get wings version longer moments ticket U Design Larry Halfilte Major Wins 1984 NationalsReno NV First Place Open Driskill 1984 MACA Standings High Point Winner Driskill 1985 NationalsWestover MA First Place Open Driskill 1986 NationalsLake Charles LA First Place Open Pat Wilcox Second Place Open Michael Wilcox First Place Junior Andy Minor biggest differences between model other /zA Combat models big solid center rib Larry says ruggedness reliability essential top Combat model Full-Size Plans Available Page 186 IO 1155 5-r OVTS& DEE 044 35105 /T /INNTALLMTh ITO tIlIIT 7 e eVTOJT ALTIPNAI WIAWNILAM&NT 7APU MCVNTITOPAN7 SOTTM 416cams EIb TEMPLA7 AL EAL FILAA4 SN i4tI IE A5SWV -OA TWAINEE ~ESIN TAIL CA TEMPLATE rAINE #4A COMBAT L55IGNLP PY JLL *2I J7UN7CN J4I S AO WISE HINF TA BOOM WA ITA ATOC Vi] SAL NOES SI0AL - EIaDs E ENOINE LAO EALV4 CNTEE SIP PALANCS POIN4- NAIL LILToWAFWDTIPWEINT 7 OF TPOO SELLCEAN SELLCSATW AVAFT FOAM WW& -STAR3i~IIjIii 111*15flMITATS TIP OIFO OO SS 1Ik 0001 ThMRATE FOE CSE WINO OVig VAAL5A WINO TIP Draftsmans notes addition complete structions building Halflite article cludes tips Larry Driskill engines propeller selection fuel sound philosophy design approach Combat flying Before Larry moved away Washing ton DC area serve country flying U-2s good fortune work him devel oping Geophysical Combat design May 1985 Model Aviation some modelers just have stuff together Larry ot As will see reading text designs fastest lightest flashiestbut among best sound advice herein applicable other model types John Hunton Note maple engine mounts rounded back ends fit center rib prevent stress concen trations Pre-glue both center rib engine mounts white aliphatic glue has thinned part water three parts glue Allow glue diy completely apply another coat glue Assemble parts clamp let assembly dry thoroughly glue completely dry face off both sides assembly sanding block sand three degrees engine offset mount Accurately align Tee Dee 049 centerline center rib Drill %2-in holes 2-56 machine screws will hold engine Countersink board side mounts depth / %-in drill Temporarily mount engine draw 2-56 blind nuts place Remove engine Apply cyanoacrylate glue CyA hold blind nuts securely mounts wont work loose af ter balsa nacelle applied Cut nacelle/stiffener A-in balsa can bit lighter balsa used center rib Glue balsa fair ing place inboard side center rib Glue block /2-in balsa onto front mounts nacelle Use Dremel tool sanding drum radius inside balsa nose block fit engine cleanly Carve sand fuselage assembly streamline faired shape Leave wing mount area flat Drill bellcrank shaft mount bellcrank assembly complete cable lead-outs Trim wing cores plan shape notic ing different wingspans indicated plan Notch inboard core fit fair ing block Glue inboard wing cen ter rib white glue epoxy use white glue allow plenty time curing white glue dries slowly contact Styrofoam Hold wing accurate alignment masking tape Bend end pushrod Z shape required Note pushrod acts bellcrank stop contacts cen ter rib Install pushrod innermost bellcrank hole Drill outboard wing core accept Estes BT-50 rocket tube fuel bladder tube 15/16 spade bit Install -in balsa end plugs glue tube place wing inboard wing/center rib joint has set pre-fit outboard wing assembly clear controls glue position Again secure masking tape until cured Dont forget install pushrod before gluing careful foul part control system glue Test controls frequently during assembly ensure remain free smooth Glue -in ID eyelets proper posi tion inboard tip rib Glue inboard rib place white glue Press two four-penny nails outboard wing core tip Remove Fill holes white glue push nails again leaving heads flush surface tip Glue outboard wing tip place being certain get some glue nail heads will glued rib well Styrofoam Glue spars place being careful ensure good bond between spars center rib Also sure spars fit tightly tip ribs glued se curely certain spars flush wing surfaces Use white glue assembly Hold spars place masking tape until glue cures Sand wings 600-grit paper flat sanding block Blow sanding dust off foam add strapping tape top bottom wing omit tape important keeping wings swinging forward case Halflite has sudden meeting ground Cover wings low-temperature film Sealamin works fine does Fascal Higher-temperature coverings easy use because tendency foam melt before covering sticks cover bottom wings first overlap covering leading edge covering top Cut fuel bladder access drain holes Fuel-proof seal around holes epoxy also use slow-cure ep oxy such Hobbypoxy Formula II seal fuel-proof finish engine mount nacelle Coat tail boom good fuel-proof paint recommend pick fav orite color stick Combat models also cover inboard wing tip same color easy identi fication heat battle Assemble stabilator hinge shown Continued page 173 78 Model Aviation CP VIEW eoe VIEW VSMLEA WINOTIP fuel bladder made up surgical tub ing thats also available Kustom Kraftsmanship California 714/830-5162 especially bubble canopy Hi designed eyeball Gil came over Lockheed May 1952 asked come back Veco new improved terms did course managed stick out until around end 1953 pleased accept Ken Adams bid come down Anaheim join him Hi Johnson Kenhi Im sure glad did Ken nicest guy work Ive ever met thanks Joe Wagner sharing im portant part Stunt history us hope youve enjoyed special glimpse past much have Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Racing/Ballard Continued page 73 Racing St Louis am happy report Racing St Louis area once again upswing Contest Director Gary Frost first contest quite some time October 4 thorough success plans two contests 1988 first Sunday May first Sunday October Gary promoted contest both telephone calls letters effort rewarded competitors three states Mike Greb came way Texas fly Scale Race plus Fast Slow Rat Scale Racing won Bob Oge cx- cellent time 60507 Fast Rat won Larry Dziak Jr time 45165 Larry D Jr also won Slow Rat 604 12 dad won Sport Race 4564 excellent times concrete circles Buder Park topnotch Gary also planning series Speed contests run conjunction 1988 Racing meets Speed people will want put St Louis contests calendars Cloudhusters Club Detroit MI has revival Racing Detroit area ex tremely strong Racing events 1962 through early Seventies Combat less replaced Now Paul Smith colleagues have rejuvenated Racing area Cloudbusters CL Racing contest September 27 Ford axle plant Sterling Heights featured Mouse Racing type Sport Racing have called Slow Combat Racing am enclosing photograph Pauls group taken during September 27 meet Rat/Scale Race control wire construction have several requests concerning proper method making up ends control lines events think best method wrap ping found AMA rule book Con trol Line General section Figure No 1 No 2 concerns proper construction wire ends solid-strand control wires buy typical spindle/spool-and-wire kits use wire included found wire little too thick try drop off about 005 using some fine copper wire electrical shop double-wrap over lap closely spaced turns copper wire least inch Instead soldering wire-end wrappings have using one-hour slow-cure epoxy glue past have several wires break 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other exhibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swap Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peek skill NY 10566 day Ticket Two day Ticket under 12 yrs day STATIC COMPETITION models must operable NC controlled Trophies andlor prizes awarded VCRs awarded two categories BestinShow flying Best-inShow non-flying Top live NC systems tor 1st place category Trophies Other winners WWI SCALE BC BOATS poso awl Ivilatli lfAiSAIYI POST aWl SCALE BC BOATS INan-MIllarAl INar-ClilaIhl PSTTEBN RACINO B/C BOATS SlANT SCALE SOAkS-OFF SCALE OLO TIMERS BC CABS 1/10 sear JONIOR EVENTS BC CARS 1/10 BeAr SPORT BC CARS 1/B scale SLISERS 101501 HELICOPTERS EFOT-IN-OBOW EIreval 011110 duet space aaalabltt obtain pTa-registration Static Competi tion forms write lincirode self-addressed stamped enoelopel Allen Reinhardt 2 Douglas Drive Pleasantville NY 10570 Judging takes place Sunday afternoon DIRECTIONS TOt Tonke, Racewup localed SOatflen westoheure CoanIn along tIle Etutelt Notlbsand Side 01 thu New Tonk Srale Thuwal 11-871 I-ST Soatn Eot 4 Seoioe oad 30 Inutfic light Tan left love Torawuni toenre nukinuueu PROM THE SOUTH I-ST Nslth Exit 2 St let tattle lluht laIn sent nakinueee soldering epoxy seems work very well no heat stress wire sol dering clear epoxy wires can visually inspected time used can avoid kinking lines plas tic storage reels installing -in-long 2-56 bolt through side reel head inside near line-slot side using protruding end anchor line clips wind up lines eliminates need bend lines through slot order hitch line clips built-in plastic tabs As always comments photos solic tted John C Ballard 10102 Kimblewick Dr Louis ville KY 40223 Half ite/Driski II Continued page 78 Glue %2 brass tubing place thick CyA double-glue 5-mm epoxy Apply strapping tape Note tape Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-op models Registration models will start 830 am morning SWAP SHOP WRAMs Swap Shop has become malor show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregistration forms receive forms send self-addressed stumped envelope John Isbister 4 Devon Rd. Lurchmont NY ioss SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further information write enclose self-addressed stumped envelope call Jerry Judge T Nancy Road Srewsfer NY 10509 514-275-2717 RADIO AEROMODELERS INC 21/2D 10 AM 6 PM used beef up area under control horn Also note stabilator offset toward outside circle Cover stabilator plastic film Remove covering center body boom fits glue boom place 5-mm epoxy joint has cured install stabilator hinge tube CyA being careful align properly will level wing Mount stabilator A6 wire hinge certain movement free unre stricted Note dogleg bend pushrod throw adjustment also Z-bend elevator horn pre fer simple setup much break come loose Also stabilator readily replaceable case trouble Sta bilator adjustment made changing dogleg Trainer version construction same both models except January 1988 173 trainers longer moments nose tail Substitute longer center rib maple engine mounts nacelle tail boom shown plan will result mod el bit stablebut still ma neuverable fun fly long nose room enough Perfect No 19 fuel tank wish run hard tank suction system Compromises Perhaps unusual section put Combat model construc tion article once read aircraft designs product compromises tradeoffs full-scale aviation world have seen evidence thesis An example U-2 landing gear system Editor Lorry currently U-2 pilot U-2 has two landing gearwhich tandem arrangement both centerline aircraft Compared weight typi cal tricycle arrangement weight wheel assembly has eliminated weight saved has increased performance U-2 centerline gear however U-2 much challenging land tricycle-gear planes Compromises tradeoffs also come play during construction Half lite will have make some decisions between top performance durability first choice involves wing spars 1 Use spruce spars strong hea vier balsa 2 Use balsa spars youll have light weight may break 3 Use balsa spars carbon fiber reinforce ment center eight inches span wing will light strong expensive difficult build next choice engine mounts % x -in mounts shown plan can shaved down /16 x still adequately strong trou ble build however Finally wing cores can lightened hollowing out hot-wire techniques Again will lose strength especially thin cores less /l6 using three lightening choices will save about one-half ounce However machine will con siderably less durable Fuel system Fuel bladders made thin-wall surgical tubing Kustom Krafts manship Part #484 Keep simple just tying knot back end rubber-&UIF&CEJ Ige -a nrO AMERICAN JR onr ,m CAMPBELL T RITE DUBRO EASY BUILT MODEL5 FLYLINE FOX BERG DUBOIS LOW K&B MICRO X OS MAX RA IPECK-POLYMER ECT MODELS ISEAGLEN STERLING IVAN SUPER TIGER INDER FLITE LER 3WILLIAMSS PRODUCTS RS ESTES MODEL ROCKETS goad SI Ia Cub Check ow Stamps fec 31 page tabloid size DISCOUNT Catalog 900 illustrationsover 700 Kits go choose MAILOADER PHONEORDER IN STORE PENN VALLEY HAlEY CENTER 817 1 Main St Lanadalula 19446 banding surgical tubing length fuel line has 3A6-in length 3A2 ID brass tubing inside prevent collapse tube uninflated bladder needs 1 /2 long knot rubberband hold fuel four five minutes flight Engine Cox Tee Dee engine can run box-stock good results However few simple modifications will result powerful reliable-running engine single important modification replace needle valve assembly having finer thread Kustom Kraftsmanship Ace RC assemblies both produce good results set cylinder shims collar KK will allow adjust cylinder timing optimum power Follow instructions provided shims Drilling out intake venturi per Tee Dee instructions will boost top power However bigger venturi opening tougher set needle valve prop erly greater likelihood poor consistency Also combination higher-nitro fuel wide open venturi will result greater fuel consumption have used both Cox GloBee plugs good results easy over-com press engine suggest begin three four copper gaskets under whichever plug choose needle valve settings overly sensitive engine becomes difficult start add another gasket getting good runs con sistent needle settings remove gaskets time until get maximum power starting needle-valve-setting problems Control lines use lighter lines 012 steel cable AMA Combat rules call 35-ft line length centerline air craft centerline handle prac tice can slow things down bit using longer lines 40 ft maximum trainer version will fly well 40-ft lines will have add extra nail outboard wing tip weight Propeller three Nationals wins Halflite use Cox black 5 x 3 174 Model Aviation props dont look very trick tough apparently efficient just super model also have good performance Tornado 5 x 3 props can slow model bit 6 x 3 prop fuel economy will improve Fuel Small /2A engines least bit forgiving dirty otherwise contami nated fuel Use fresh fuel filter least onceeither coming out can going bladder have great re sults 33 %-nitro fuel Cox Racing Fuel also gives good results Make sure what ever fuel choose has least 20% oil minimum 5% castor oil Flying have flying Control Line Combat over 25 years have also logged over 900 combat hours Forward Air Control pilot southeast Asia have found Rule No 1 Forward Air Control business Rule No 1 success CL Combat same run ground Other axioms CL Combat success ThERE ARE NO SECRETS LIQUID FINISHES MASTER MODELING DESIGNING SCRATCH BUILDING 1 Practice Practice alone practice flying buddies practice entering contest can practice un til flying becomes second nature 2 Keep flight ground equip ment simple have minor trouble equipment practice will nearly always have major trouble heat battle 3 Dont sacrifice reliability consisten cy minor performance gains par ticularly true engine involved Combat speed event Running ultra-high-nitro fuel high-compression head wild port timing gain couple mph may make plane crowd pleaser extra performance comes expense reliability consistency will win Combat matches 4 Know ground rules Read AMA rule book dont make mistakes ignorance rules Flying 1/ZA Combat successfully involves hard work disciplines preparation engines practice etc Halflite design TOMS TECHMOUES MONOKOTING FLYING AROUND OLD TIME U CONTROL HANDBOOK J ALL ABOUT ENGINES MORE COMING SiO95 EACH HARRY HIGLEY & SONS INC P 0 BOX 532 GLENWOOD ILL 60425 proven model help build Com bat success upon Tee Dee engines engine parts thin-walled fuel bladder tubing avail able Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Styro foam wing cores Halfilte other Nationals-winning designs available Core House 760 Waltonville Rd Hummelstown PA 17036 FFWC General/Cowley Continued page 89 does interest Free Flight continue flourish face generally wid ening scope model flying Much appeal can attributed simple purity beauty model released fly free responding changing weather conditions personal level infinite scope performance increase through aerodynamic experimentation structural refinements well-engineered design above ultimate level endeavor opportunity participate rewarding athletic event highest level sportsmanship unrestricted exchange friendship technical information between fellow com petitors around world ex plains enduring hold category competition FFWC Gliders/Cowley Continued page 91 uses full-span wing molds made stable mixture sand epoxy framed metal tubing Orels models ex ceptionally high standard such tech niques now being applied Free Flight models interesting speculate whether builder-of-the-model rule will day dropped has already happened RC classes traditional balsa D-box leading edge airframes continue norm competitors out extensive use reinforcement usually form carbon-fiber wing spar caps individual upper lower rib 176 Model Aviation TheNN. cFoldingBALSA WOOS wThg- A-i INTERCEPTOR Ready Fly $695 U-build Kit $495 Note Pleaseadd$3forP&Hforlat3modela. Add 10% price additional model Aw0~JA AIRCRAFT COMPANY PO Box65132 Portland OR 97268
Edition: Model Aviation - 1988/01
Page Numbers: 76, 77, 78, 173, 174, 176
in s necessary up surviva bility order have flyability cleverly thought out design USAF combat pilot doesnt have make such sacrifices Designer Larry Driskill poses model used win first place l/2A Combat 1985 Hats pressure suit helmet may bit overkill flying Combat model Larry happens Col Air Force Squadron Commander 99th StrategIc Reconnaissance Squadron After having logged hours full-size combat nilot Larry now flies U-2s like pictured behind him _ IF YOU ENJOY flying Control Line Combat will really enjoy flying Combat high-performance model trainer option initial prototype Haiflite built 1983 higher aspect ratio mod el fast flew well too squirrelly wasnt durable enough good contests wider-chord wing planform stronger construction current version solved problems plans presented show compe tition type also alternate trainer version novice pilots trainer torgiving easier fly all-out competition model trainer dif fering parts tail boom center rib nacelle two maple engine mounts longer Other size five parts two versions built same Left Note amount engine offset sanded mount Cox engine has modified Kustom Kraftsmanshlp fine-thread needle valve shims inserted base cylinder See text details Tee Dee mods Right stabilator fitted quick-change hinge arrangement joggle pushrod used control adjustments Strapping tape reinforces 76 Model Aviation Driskill Text John Hunton Evaluate experience objectives choose weapon either case Halflite will deliver super maneuverability small tough package Construction center rib assembly heart model good place begin As modern Combat models components attach center rib component sets design apart its contemporaries also gives Halflite its name Unlike Combat designs strive lichtness cost model Details Stabilator quick-change hinge shown previous page Its constructed %z brass tubing 1-in long uses materials like 36-powered AMA Fast Combat design -in balsa cen ter rib 1/2 x %-in maple engine mounts x %-in spars result half light model tough resilient will penetrate winds render super-light models almost unflyable ability Halflite turn quickly fly fast easy fly comes through clean efficient designand final analysis relative lightness things make model fine Combat weapon Cut center ribs /2-in mediumweight balsa especially careful ar eas maple mounts will glued make truly square cuts Use coping scroll saw cut slot Sig /2A ny lon belicrank slot should provide tight fit bellcrank assembly pivots slot must also provide plenty clearance lead-outs will no chance binding January 1988 77 Left Several iterations Halfite evolved todays design thats shown bot tom lineup Above final version shares ruggedness prototypes corporates substantially chord wing Below Combat too much now youre helping junior birdman get wings version longer moments ticket U Design Larry Halfilte Major Wins 1984 NationalsReno NV First Place Open Driskill 1984 MACA Standings High Point Winner Driskill 1985 NationalsWestover MA First Place Open Driskill 1986 NationalsLake Charles LA First Place Open Pat Wilcox Second Place Open Michael Wilcox First Place Junior Andy Minor biggest differences between model other /zA Combat models big solid center rib Larry says ruggedness reliability essential top Combat model Full-Size Plans Available Page 186 IO 1155 5-r OVTS& DEE 044 35105 /T /INNTALLMTh ITO tIlIIT 7 e eVTOJT ALTIPNAI WIAWNILAM&NT 7APU MCVNTITOPAN7 SOTTM 416cams EIb TEMPLA7 AL EAL FILAA4 SN i4tI IE A5SWV -OA TWAINEE ~ESIN TAIL CA TEMPLATE rAINE #4A COMBAT L55IGNLP PY JLL *2I J7UN7CN J4I S AO WISE HINF TA BOOM WA ITA ATOC Vi] SAL NOES SI0AL - EIaDs E ENOINE LAO EALV4 CNTEE SIP PALANCS POIN4- NAIL LILToWAFWDTIPWEINT 7 OF TPOO SELLCEAN SELLCSATW AVAFT FOAM WW& -STAR3i~IIjIii 111*15flMITATS TIP OIFO OO SS 1Ik 0001 ThMRATE FOE CSE WINO OVig VAAL5A WINO TIP Draftsmans notes addition complete structions building Halflite article cludes tips Larry Driskill engines propeller selection fuel sound philosophy design approach Combat flying Before Larry moved away Washing ton DC area serve country flying U-2s good fortune work him devel oping Geophysical Combat design May 1985 Model Aviation some modelers just have stuff together Larry ot As will see reading text designs fastest lightest flashiestbut among best sound advice herein applicable other model types John Hunton Note maple engine mounts rounded back ends fit center rib prevent stress concen trations Pre-glue both center rib engine mounts white aliphatic glue has thinned part water three parts glue Allow glue diy completely apply another coat glue Assemble parts clamp let assembly dry thoroughly glue completely dry face off both sides assembly sanding block sand three degrees engine offset mount Accurately align Tee Dee 049 centerline center rib Drill %2-in holes 2-56 machine screws will hold engine Countersink board side mounts depth / %-in drill Temporarily mount engine draw 2-56 blind nuts place Remove engine Apply cyanoacrylate glue CyA hold blind nuts securely mounts wont work loose af ter balsa nacelle applied Cut nacelle/stiffener A-in balsa can bit lighter balsa used center rib Glue balsa fair ing place inboard side center rib Glue block /2-in balsa onto front mounts nacelle Use Dremel tool sanding drum radius inside balsa nose block fit engine cleanly Carve sand fuselage assembly streamline faired shape Leave wing mount area flat Drill bellcrank shaft mount bellcrank assembly complete cable lead-outs Trim wing cores plan shape notic ing different wingspans indicated plan Notch inboard core fit fair ing block Glue inboard wing cen ter rib white glue epoxy use white glue allow plenty time curing white glue dries slowly contact Styrofoam Hold wing accurate alignment masking tape Bend end pushrod Z shape required Note pushrod acts bellcrank stop contacts cen ter rib Install pushrod innermost bellcrank hole Drill outboard wing core accept Estes BT-50 rocket tube fuel bladder tube 15/16 spade bit Install -in balsa end plugs glue tube place wing inboard wing/center rib joint has set pre-fit outboard wing assembly clear controls glue position Again secure masking tape until cured Dont forget install pushrod before gluing careful foul part control system glue Test controls frequently during assembly ensure remain free smooth Glue -in ID eyelets proper posi tion inboard tip rib Glue inboard rib place white glue Press two four-penny nails outboard wing core tip Remove Fill holes white glue push nails again leaving heads flush surface tip Glue outboard wing tip place being certain get some glue nail heads will glued rib well Styrofoam Glue spars place being careful ensure good bond between spars center rib Also sure spars fit tightly tip ribs glued se curely certain spars flush wing surfaces Use white glue assembly Hold spars place masking tape until glue cures Sand wings 600-grit paper flat sanding block Blow sanding dust off foam add strapping tape top bottom wing omit tape important keeping wings swinging forward case Halflite has sudden meeting ground Cover wings low-temperature film Sealamin works fine does Fascal Higher-temperature coverings easy use because tendency foam melt before covering sticks cover bottom wings first overlap covering leading edge covering top Cut fuel bladder access drain holes Fuel-proof seal around holes epoxy also use slow-cure ep oxy such Hobbypoxy Formula II seal fuel-proof finish engine mount nacelle Coat tail boom good fuel-proof paint recommend pick fav orite color stick Combat models also cover inboard wing tip same color easy identi fication heat battle Assemble stabilator hinge shown Continued page 173 78 Model Aviation CP VIEW eoe VIEW VSMLEA WINOTIP fuel bladder made up surgical tub ing thats also available Kustom Kraftsmanship California 714/830-5162 especially bubble canopy Hi designed eyeball Gil came over Lockheed May 1952 asked come back Veco new improved terms did course managed stick out until around end 1953 pleased accept Ken Adams bid come down Anaheim join him Hi Johnson Kenhi Im sure glad did Ken nicest guy work Ive ever met thanks Joe Wagner sharing im portant part Stunt history us hope youve enjoyed special glimpse past much have Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Racing/Ballard Continued page 73 Racing St Louis am happy report Racing St Louis area once again upswing Contest Director Gary Frost first contest quite some time October 4 thorough success plans two contests 1988 first Sunday May first Sunday October Gary promoted contest both telephone calls letters effort rewarded competitors three states Mike Greb came way Texas fly Scale Race plus Fast Slow Rat Scale Racing won Bob Oge cx- cellent time 60507 Fast Rat won Larry Dziak Jr time 45165 Larry D Jr also won Slow Rat 604 12 dad won Sport Race 4564 excellent times concrete circles Buder Park topnotch Gary also planning series Speed contests run conjunction 1988 Racing meets Speed people will want put St Louis contests calendars Cloudhusters Club Detroit MI has revival Racing Detroit area ex tremely strong Racing events 1962 through early Seventies Combat less replaced Now Paul Smith colleagues have rejuvenated Racing area Cloudbusters CL Racing contest September 27 Ford axle plant Sterling Heights featured Mouse Racing type Sport Racing have called Slow Combat Racing am enclosing photograph Pauls group taken during September 27 meet Rat/Scale Race control wire construction have several requests concerning proper method making up ends control lines events think best method wrap ping found AMA rule book Con trol Line General section Figure No 1 No 2 concerns proper construction wire ends solid-strand control wires buy typical spindle/spool-and-wire kits use wire included found wire little too thick try drop off about 005 using some fine copper wire electrical shop double-wrap over lap closely spaced turns copper wire least inch Instead soldering wire-end wrappings have using one-hour slow-cure epoxy glue past have several wires break 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other exhibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swap Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peek skill NY 10566 day Ticket Two day Ticket under 12 yrs day STATIC COMPETITION models must operable NC controlled Trophies andlor prizes awarded VCRs awarded two categories BestinShow flying Best-inShow non-flying Top live NC systems tor 1st place category Trophies Other winners WWI SCALE BC BOATS poso awl Ivilatli lfAiSAIYI POST aWl SCALE BC BOATS INan-MIllarAl INar-ClilaIhl PSTTEBN RACINO B/C BOATS SlANT SCALE SOAkS-OFF SCALE OLO TIMERS BC CABS 1/10 sear JONIOR EVENTS BC CARS 1/10 BeAr SPORT BC CARS 1/B scale SLISERS 101501 HELICOPTERS EFOT-IN-OBOW EIreval 011110 duet space aaalabltt obtain pTa-registration Static Competi tion forms write lincirode self-addressed stamped enoelopel Allen Reinhardt 2 Douglas Drive Pleasantville NY 10570 Judging takes place Sunday afternoon DIRECTIONS TOt Tonke, Racewup localed SOatflen westoheure CoanIn along tIle Etutelt Notlbsand Side 01 thu New Tonk Srale Thuwal 11-871 I-ST Soatn Eot 4 Seoioe oad 30 Inutfic light Tan left love Torawuni toenre nukinuueu PROM THE SOUTH I-ST Nslth Exit 2 St let tattle lluht laIn sent nakinueee soldering epoxy seems work very well no heat stress wire sol dering clear epoxy wires can visually inspected time used can avoid kinking lines plas tic storage reels installing -in-long 2-56 bolt through side reel head inside near line-slot side using protruding end anchor line clips wind up lines eliminates need bend lines through slot order hitch line clips built-in plastic tabs As always comments photos solic tted John C Ballard 10102 Kimblewick Dr Louis ville KY 40223 Half ite/Driski II Continued page 78 Glue %2 brass tubing place thick CyA double-glue 5-mm epoxy Apply strapping tape Note tape Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-op models Registration models will start 830 am morning SWAP SHOP WRAMs Swap Shop has become malor show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregistration forms receive forms send self-addressed stumped envelope John Isbister 4 Devon Rd. Lurchmont NY ioss SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further information write enclose self-addressed stumped envelope call Jerry Judge T Nancy Road Srewsfer NY 10509 514-275-2717 RADIO AEROMODELERS INC 21/2D 10 AM 6 PM used beef up area under control horn Also note stabilator offset toward outside circle Cover stabilator plastic film Remove covering center body boom fits glue boom place 5-mm epoxy joint has cured install stabilator hinge tube CyA being careful align properly will level wing Mount stabilator A6 wire hinge certain movement free unre stricted Note dogleg bend pushrod throw adjustment also Z-bend elevator horn pre fer simple setup much break come loose Also stabilator readily replaceable case trouble Sta bilator adjustment made changing dogleg Trainer version construction same both models except January 1988 173 trainers longer moments nose tail Substitute longer center rib maple engine mounts nacelle tail boom shown plan will result mod el bit stablebut still ma neuverable fun fly long nose room enough Perfect No 19 fuel tank wish run hard tank suction system Compromises Perhaps unusual section put Combat model construc tion article once read aircraft designs product compromises tradeoffs full-scale aviation world have seen evidence thesis An example U-2 landing gear system Editor Lorry currently U-2 pilot U-2 has two landing gearwhich tandem arrangement both centerline aircraft Compared weight typi cal tricycle arrangement weight wheel assembly has eliminated weight saved has increased performance U-2 centerline gear however U-2 much challenging land tricycle-gear planes Compromises tradeoffs also come play during construction Half lite will have make some decisions between top performance durability first choice involves wing spars 1 Use spruce spars strong hea vier balsa 2 Use balsa spars youll have light weight may break 3 Use balsa spars carbon fiber reinforce ment center eight inches span wing will light strong expensive difficult build next choice engine mounts % x -in mounts shown plan can shaved down /16 x still adequately strong trou ble build however Finally wing cores can lightened hollowing out hot-wire techniques Again will lose strength especially thin cores less /l6 using three lightening choices will save about one-half ounce However machine will con siderably less durable Fuel system Fuel bladders made thin-wall surgical tubing Kustom Krafts manship Part #484 Keep simple just tying knot back end rubber-&UIF&CEJ Ige -a nrO AMERICAN JR onr ,m CAMPBELL T RITE DUBRO EASY BUILT MODEL5 FLYLINE FOX BERG DUBOIS LOW K&B MICRO X OS MAX RA IPECK-POLYMER ECT MODELS ISEAGLEN STERLING IVAN SUPER TIGER INDER FLITE LER 3WILLIAMSS PRODUCTS RS ESTES MODEL ROCKETS goad SI Ia Cub Check ow Stamps fec 31 page tabloid size DISCOUNT Catalog 900 illustrationsover 700 Kits go choose MAILOADER PHONEORDER IN STORE PENN VALLEY HAlEY CENTER 817 1 Main St Lanadalula 19446 banding surgical tubing length fuel line has 3A6-in length 3A2 ID brass tubing inside prevent collapse tube uninflated bladder needs 1 /2 long knot rubberband hold fuel four five minutes flight Engine Cox Tee Dee engine can run box-stock good results However few simple modifications will result powerful reliable-running engine single important modification replace needle valve assembly having finer thread Kustom Kraftsmanship Ace RC assemblies both produce good results set cylinder shims collar KK will allow adjust cylinder timing optimum power Follow instructions provided shims Drilling out intake venturi per Tee Dee instructions will boost top power However bigger venturi opening tougher set needle valve prop erly greater likelihood poor consistency Also combination higher-nitro fuel wide open venturi will result greater fuel consumption have used both Cox GloBee plugs good results easy over-com press engine suggest begin three four copper gaskets under whichever plug choose needle valve settings overly sensitive engine becomes difficult start add another gasket getting good runs con sistent needle settings remove gaskets time until get maximum power starting needle-valve-setting problems Control lines use lighter lines 012 steel cable AMA Combat rules call 35-ft line length centerline air craft centerline handle prac tice can slow things down bit using longer lines 40 ft maximum trainer version will fly well 40-ft lines will have add extra nail outboard wing tip weight Propeller three Nationals wins Halflite use Cox black 5 x 3 174 Model Aviation props dont look very trick tough apparently efficient just super model also have good performance Tornado 5 x 3 props can slow model bit 6 x 3 prop fuel economy will improve Fuel Small /2A engines least bit forgiving dirty otherwise contami nated fuel Use fresh fuel filter least onceeither coming out can going bladder have great re sults 33 %-nitro fuel Cox Racing Fuel also gives good results Make sure what ever fuel choose has least 20% oil minimum 5% castor oil Flying have flying Control Line Combat over 25 years have also logged over 900 combat hours Forward Air Control pilot southeast Asia have found Rule No 1 Forward Air Control business Rule No 1 success CL Combat same run ground Other axioms CL Combat success ThERE ARE NO SECRETS LIQUID FINISHES MASTER MODELING DESIGNING SCRATCH BUILDING 1 Practice Practice alone practice flying buddies practice entering contest can practice un til flying becomes second nature 2 Keep flight ground equip ment simple have minor trouble equipment practice will nearly always have major trouble heat battle 3 Dont sacrifice reliability consisten cy minor performance gains par ticularly true engine involved Combat speed event Running ultra-high-nitro fuel high-compression head wild port timing gain couple mph may make plane crowd pleaser extra performance comes expense reliability consistency will win Combat matches 4 Know ground rules Read AMA rule book dont make mistakes ignorance rules Flying 1/ZA Combat successfully involves hard work disciplines preparation engines practice etc Halflite design TOMS TECHMOUES MONOKOTING FLYING AROUND OLD TIME U CONTROL HANDBOOK J ALL ABOUT ENGINES MORE COMING SiO95 EACH HARRY HIGLEY & SONS INC P 0 BOX 532 GLENWOOD ILL 60425 proven model help build Com bat success upon Tee Dee engines engine parts thin-walled fuel bladder tubing avail able Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Styro foam wing cores Halfilte other Nationals-winning designs available Core House 760 Waltonville Rd Hummelstown PA 17036 FFWC General/Cowley Continued page 89 does interest Free Flight continue flourish face generally wid ening scope model flying Much appeal can attributed simple purity beauty model released fly free responding changing weather conditions personal level infinite scope performance increase through aerodynamic experimentation structural refinements well-engineered design above ultimate level endeavor opportunity participate rewarding athletic event highest level sportsmanship unrestricted exchange friendship technical information between fellow com petitors around world ex plains enduring hold category competition FFWC Gliders/Cowley Continued page 91 uses full-span wing molds made stable mixture sand epoxy framed metal tubing Orels models ex ceptionally high standard such tech niques now being applied Free Flight models interesting speculate whether builder-of-the-model rule will day dropped has already happened RC classes traditional balsa D-box leading edge airframes continue norm competitors out extensive use reinforcement usually form carbon-fiber wing spar caps individual upper lower rib 176 Model Aviation TheNN. cFoldingBALSA WOOS wThg- A-i INTERCEPTOR Ready Fly $695 U-build Kit $495 Note Pleaseadd$3forP&Hforlat3modela. Add 10% price additional model Aw0~JA AIRCRAFT COMPANY PO Box65132 Portland OR 97268
Edition: Model Aviation - 1988/01
Page Numbers: 76, 77, 78, 173, 174, 176
in s necessary up surviva bility order have flyability cleverly thought out design USAF combat pilot doesnt have make such sacrifices Designer Larry Driskill poses model used win first place l/2A Combat 1985 Hats pressure suit helmet may bit overkill flying Combat model Larry happens Col Air Force Squadron Commander 99th StrategIc Reconnaissance Squadron After having logged hours full-size combat nilot Larry now flies U-2s like pictured behind him _ IF YOU ENJOY flying Control Line Combat will really enjoy flying Combat high-performance model trainer option initial prototype Haiflite built 1983 higher aspect ratio mod el fast flew well too squirrelly wasnt durable enough good contests wider-chord wing planform stronger construction current version solved problems plans presented show compe tition type also alternate trainer version novice pilots trainer torgiving easier fly all-out competition model trainer dif fering parts tail boom center rib nacelle two maple engine mounts longer Other size five parts two versions built same Left Note amount engine offset sanded mount Cox engine has modified Kustom Kraftsmanshlp fine-thread needle valve shims inserted base cylinder See text details Tee Dee mods Right stabilator fitted quick-change hinge arrangement joggle pushrod used control adjustments Strapping tape reinforces 76 Model Aviation Driskill Text John Hunton Evaluate experience objectives choose weapon either case Halflite will deliver super maneuverability small tough package Construction center rib assembly heart model good place begin As modern Combat models components attach center rib component sets design apart its contemporaries also gives Halflite its name Unlike Combat designs strive lichtness cost model Details Stabilator quick-change hinge shown previous page Its constructed %z brass tubing 1-in long uses materials like 36-powered AMA Fast Combat design -in balsa cen ter rib 1/2 x %-in maple engine mounts x %-in spars result half light model tough resilient will penetrate winds render super-light models almost unflyable ability Halflite turn quickly fly fast easy fly comes through clean efficient designand final analysis relative lightness things make model fine Combat weapon Cut center ribs /2-in mediumweight balsa especially careful ar eas maple mounts will glued make truly square cuts Use coping scroll saw cut slot Sig /2A ny lon belicrank slot should provide tight fit bellcrank assembly pivots slot must also provide plenty clearance lead-outs will no chance binding January 1988 77 Left Several iterations Halfite evolved todays design thats shown bot tom lineup Above final version shares ruggedness prototypes corporates substantially chord wing Below Combat too much now youre helping junior birdman get wings version longer moments ticket U Design Larry Halfilte Major Wins 1984 NationalsReno NV First Place Open Driskill 1984 MACA Standings High Point Winner Driskill 1985 NationalsWestover MA First Place Open Driskill 1986 NationalsLake Charles LA First Place Open Pat Wilcox Second Place Open Michael Wilcox First Place Junior Andy Minor biggest differences between model other /zA Combat models big solid center rib Larry says ruggedness reliability essential top Combat model Full-Size Plans Available Page 186 IO 1155 5-r OVTS& DEE 044 35105 /T /INNTALLMTh ITO tIlIIT 7 e eVTOJT ALTIPNAI WIAWNILAM&NT 7APU MCVNTITOPAN7 SOTTM 416cams EIb TEMPLA7 AL EAL FILAA4 SN i4tI IE A5SWV -OA TWAINEE ~ESIN TAIL CA TEMPLATE rAINE #4A COMBAT L55IGNLP PY JLL *2I J7UN7CN J4I S AO WISE HINF TA BOOM WA ITA ATOC Vi] SAL NOES SI0AL - EIaDs E ENOINE LAO EALV4 CNTEE SIP PALANCS POIN4- NAIL LILToWAFWDTIPWEINT 7 OF TPOO SELLCEAN SELLCSATW AVAFT FOAM WW& -STAR3i~IIjIii 111*15flMITATS TIP OIFO OO SS 1Ik 0001 ThMRATE FOE CSE WINO OVig VAAL5A WINO TIP Draftsmans notes addition complete structions building Halflite article cludes tips Larry Driskill engines propeller selection fuel sound philosophy design approach Combat flying Before Larry moved away Washing ton DC area serve country flying U-2s good fortune work him devel oping Geophysical Combat design May 1985 Model Aviation some modelers just have stuff together Larry ot As will see reading text designs fastest lightest flashiestbut among best sound advice herein applicable other model types John Hunton Note maple engine mounts rounded back ends fit center rib prevent stress concen trations Pre-glue both center rib engine mounts white aliphatic glue has thinned part water three parts glue Allow glue diy completely apply another coat glue Assemble parts clamp let assembly dry thoroughly glue completely dry face off both sides assembly sanding block sand three degrees engine offset mount Accurately align Tee Dee 049 centerline center rib Drill %2-in holes 2-56 machine screws will hold engine Countersink board side mounts depth / %-in drill Temporarily mount engine draw 2-56 blind nuts place Remove engine Apply cyanoacrylate glue CyA hold blind nuts securely mounts wont work loose af ter balsa nacelle applied Cut nacelle/stiffener A-in balsa can bit lighter balsa used center rib Glue balsa fair ing place inboard side center rib Glue block /2-in balsa onto front mounts nacelle Use Dremel tool sanding drum radius inside balsa nose block fit engine cleanly Carve sand fuselage assembly streamline faired shape Leave wing mount area flat Drill bellcrank shaft mount bellcrank assembly complete cable lead-outs Trim wing cores plan shape notic ing different wingspans indicated plan Notch inboard core fit fair ing block Glue inboard wing cen ter rib white glue epoxy use white glue allow plenty time curing white glue dries slowly contact Styrofoam Hold wing accurate alignment masking tape Bend end pushrod Z shape required Note pushrod acts bellcrank stop contacts cen ter rib Install pushrod innermost bellcrank hole Drill outboard wing core accept Estes BT-50 rocket tube fuel bladder tube 15/16 spade bit Install -in balsa end plugs glue tube place wing inboard wing/center rib joint has set pre-fit outboard wing assembly clear controls glue position Again secure masking tape until cured Dont forget install pushrod before gluing careful foul part control system glue Test controls frequently during assembly ensure remain free smooth Glue -in ID eyelets proper posi tion inboard tip rib Glue inboard rib place white glue Press two four-penny nails outboard wing core tip Remove Fill holes white glue push nails again leaving heads flush surface tip Glue outboard wing tip place being certain get some glue nail heads will glued rib well Styrofoam Glue spars place being careful ensure good bond between spars center rib Also sure spars fit tightly tip ribs glued se curely certain spars flush wing surfaces Use white glue assembly Hold spars place masking tape until glue cures Sand wings 600-grit paper flat sanding block Blow sanding dust off foam add strapping tape top bottom wing omit tape important keeping wings swinging forward case Halflite has sudden meeting ground Cover wings low-temperature film Sealamin works fine does Fascal Higher-temperature coverings easy use because tendency foam melt before covering sticks cover bottom wings first overlap covering leading edge covering top Cut fuel bladder access drain holes Fuel-proof seal around holes epoxy also use slow-cure ep oxy such Hobbypoxy Formula II seal fuel-proof finish engine mount nacelle Coat tail boom good fuel-proof paint recommend pick fav orite color stick Combat models also cover inboard wing tip same color easy identi fication heat battle Assemble stabilator hinge shown Continued page 173 78 Model Aviation CP VIEW eoe VIEW VSMLEA WINOTIP fuel bladder made up surgical tub ing thats also available Kustom Kraftsmanship California 714/830-5162 especially bubble canopy Hi designed eyeball Gil came over Lockheed May 1952 asked come back Veco new improved terms did course managed stick out until around end 1953 pleased accept Ken Adams bid come down Anaheim join him Hi Johnson Kenhi Im sure glad did Ken nicest guy work Ive ever met thanks Joe Wagner sharing im portant part Stunt history us hope youve enjoyed special glimpse past much have Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Racing/Ballard Continued page 73 Racing St Louis am happy report Racing St Louis area once again upswing Contest Director Gary Frost first contest quite some time October 4 thorough success plans two contests 1988 first Sunday May first Sunday October Gary promoted contest both telephone calls letters effort rewarded competitors three states Mike Greb came way Texas fly Scale Race plus Fast Slow Rat Scale Racing won Bob Oge cx- cellent time 60507 Fast Rat won Larry Dziak Jr time 45165 Larry D Jr also won Slow Rat 604 12 dad won Sport Race 4564 excellent times concrete circles Buder Park topnotch Gary also planning series Speed contests run conjunction 1988 Racing meets Speed people will want put St Louis contests calendars Cloudhusters Club Detroit MI has revival Racing Detroit area ex tremely strong Racing events 1962 through early Seventies Combat less replaced Now Paul Smith colleagues have rejuvenated Racing area Cloudbusters CL Racing contest September 27 Ford axle plant Sterling Heights featured Mouse Racing type Sport Racing have called Slow Combat Racing am enclosing photograph Pauls group taken during September 27 meet Rat/Scale Race control wire construction have several requests concerning proper method making up ends control lines events think best method wrap ping found AMA rule book Con trol Line General section Figure No 1 No 2 concerns proper construction wire ends solid-strand control wires buy typical spindle/spool-and-wire kits use wire included found wire little too thick try drop off about 005 using some fine copper wire electrical shop double-wrap over lap closely spaced turns copper wire least inch Instead soldering wire-end wrappings have using one-hour slow-cure epoxy glue past have several wires break 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other exhibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swap Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peek skill NY 10566 day Ticket Two day Ticket under 12 yrs day STATIC COMPETITION models must operable NC controlled Trophies andlor prizes awarded VCRs awarded two categories BestinShow flying Best-inShow non-flying Top live NC systems tor 1st place category Trophies Other winners WWI SCALE BC BOATS poso awl Ivilatli lfAiSAIYI POST aWl SCALE BC BOATS INan-MIllarAl INar-ClilaIhl PSTTEBN RACINO B/C BOATS SlANT SCALE SOAkS-OFF SCALE OLO TIMERS BC CABS 1/10 sear JONIOR EVENTS BC CARS 1/10 BeAr SPORT BC CARS 1/B scale SLISERS 101501 HELICOPTERS EFOT-IN-OBOW EIreval 011110 duet space aaalabltt obtain pTa-registration Static Competi tion forms write lincirode self-addressed stamped enoelopel Allen Reinhardt 2 Douglas Drive Pleasantville NY 10570 Judging takes place Sunday afternoon DIRECTIONS TOt Tonke, Racewup localed SOatflen westoheure CoanIn along tIle Etutelt Notlbsand Side 01 thu New Tonk Srale Thuwal 11-871 I-ST Soatn Eot 4 Seoioe oad 30 Inutfic light Tan left love Torawuni toenre nukinuueu PROM THE SOUTH I-ST Nslth Exit 2 St let tattle lluht laIn sent nakinueee soldering epoxy seems work very well no heat stress wire sol dering clear epoxy wires can visually inspected time used can avoid kinking lines plas tic storage reels installing -in-long 2-56 bolt through side reel head inside near line-slot side using protruding end anchor line clips wind up lines eliminates need bend lines through slot order hitch line clips built-in plastic tabs As always comments photos solic tted John C Ballard 10102 Kimblewick Dr Louis ville KY 40223 Half ite/Driski II Continued page 78 Glue %2 brass tubing place thick CyA double-glue 5-mm epoxy Apply strapping tape Note tape Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-op models Registration models will start 830 am morning SWAP SHOP WRAMs Swap Shop has become malor show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregistration forms receive forms send self-addressed stumped envelope John Isbister 4 Devon Rd. Lurchmont NY ioss SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further information write enclose self-addressed stumped envelope call Jerry Judge T Nancy Road Srewsfer NY 10509 514-275-2717 RADIO AEROMODELERS INC 21/2D 10 AM 6 PM used beef up area under control horn Also note stabilator offset toward outside circle Cover stabilator plastic film Remove covering center body boom fits glue boom place 5-mm epoxy joint has cured install stabilator hinge tube CyA being careful align properly will level wing Mount stabilator A6 wire hinge certain movement free unre stricted Note dogleg bend pushrod throw adjustment also Z-bend elevator horn pre fer simple setup much break come loose Also stabilator readily replaceable case trouble Sta bilator adjustment made changing dogleg Trainer version construction same both models except January 1988 173 trainers longer moments nose tail Substitute longer center rib maple engine mounts nacelle tail boom shown plan will result mod el bit stablebut still ma neuverable fun fly long nose room enough Perfect No 19 fuel tank wish run hard tank suction system Compromises Perhaps unusual section put Combat model construc tion article once read aircraft designs product compromises tradeoffs full-scale aviation world have seen evidence thesis An example U-2 landing gear system Editor Lorry currently U-2 pilot U-2 has two landing gearwhich tandem arrangement both centerline aircraft Compared weight typi cal tricycle arrangement weight wheel assembly has eliminated weight saved has increased performance U-2 centerline gear however U-2 much challenging land tricycle-gear planes Compromises tradeoffs also come play during construction Half lite will have make some decisions between top performance durability first choice involves wing spars 1 Use spruce spars strong hea vier balsa 2 Use balsa spars youll have light weight may break 3 Use balsa spars carbon fiber reinforce ment center eight inches span wing will light strong expensive difficult build next choice engine mounts % x -in mounts shown plan can shaved down /16 x still adequately strong trou ble build however Finally wing cores can lightened hollowing out hot-wire techniques Again will lose strength especially thin cores less /l6 using three lightening choices will save about one-half ounce However machine will con siderably less durable Fuel system Fuel bladders made thin-wall surgical tubing Kustom Krafts manship Part #484 Keep simple just tying knot back end rubber-&UIF&CEJ Ige -a nrO AMERICAN JR onr ,m CAMPBELL T RITE DUBRO EASY BUILT MODEL5 FLYLINE FOX BERG DUBOIS LOW K&B MICRO X OS MAX RA IPECK-POLYMER ECT MODELS ISEAGLEN STERLING IVAN SUPER TIGER INDER FLITE LER 3WILLIAMSS PRODUCTS RS ESTES MODEL ROCKETS goad SI Ia Cub Check ow Stamps fec 31 page tabloid size DISCOUNT Catalog 900 illustrationsover 700 Kits go choose MAILOADER PHONEORDER IN STORE PENN VALLEY HAlEY CENTER 817 1 Main St Lanadalula 19446 banding surgical tubing length fuel line has 3A6-in length 3A2 ID brass tubing inside prevent collapse tube uninflated bladder needs 1 /2 long knot rubberband hold fuel four five minutes flight Engine Cox Tee Dee engine can run box-stock good results However few simple modifications will result powerful reliable-running engine single important modification replace needle valve assembly having finer thread Kustom Kraftsmanship Ace RC assemblies both produce good results set cylinder shims collar KK will allow adjust cylinder timing optimum power Follow instructions provided shims Drilling out intake venturi per Tee Dee instructions will boost top power However bigger venturi opening tougher set needle valve prop erly greater likelihood poor consistency Also combination higher-nitro fuel wide open venturi will result greater fuel consumption have used both Cox GloBee plugs good results easy over-com press engine suggest begin three four copper gaskets under whichever plug choose needle valve settings overly sensitive engine becomes difficult start add another gasket getting good runs con sistent needle settings remove gaskets time until get maximum power starting needle-valve-setting problems Control lines use lighter lines 012 steel cable AMA Combat rules call 35-ft line length centerline air craft centerline handle prac tice can slow things down bit using longer lines 40 ft maximum trainer version will fly well 40-ft lines will have add extra nail outboard wing tip weight Propeller three Nationals wins Halflite use Cox black 5 x 3 174 Model Aviation props dont look very trick tough apparently efficient just super model also have good performance Tornado 5 x 3 props can slow model bit 6 x 3 prop fuel economy will improve Fuel Small /2A engines least bit forgiving dirty otherwise contami nated fuel Use fresh fuel filter least onceeither coming out can going bladder have great re sults 33 %-nitro fuel Cox Racing Fuel also gives good results Make sure what ever fuel choose has least 20% oil minimum 5% castor oil Flying have flying Control Line Combat over 25 years have also logged over 900 combat hours Forward Air Control pilot southeast Asia have found Rule No 1 Forward Air Control business Rule No 1 success CL Combat same run ground Other axioms CL Combat success ThERE ARE NO SECRETS LIQUID FINISHES MASTER MODELING DESIGNING SCRATCH BUILDING 1 Practice Practice alone practice flying buddies practice entering contest can practice un til flying becomes second nature 2 Keep flight ground equip ment simple have minor trouble equipment practice will nearly always have major trouble heat battle 3 Dont sacrifice reliability consisten cy minor performance gains par ticularly true engine involved Combat speed event Running ultra-high-nitro fuel high-compression head wild port timing gain couple mph may make plane crowd pleaser extra performance comes expense reliability consistency will win Combat matches 4 Know ground rules Read AMA rule book dont make mistakes ignorance rules Flying 1/ZA Combat successfully involves hard work disciplines preparation engines practice etc Halflite design TOMS TECHMOUES MONOKOTING FLYING AROUND OLD TIME U CONTROL HANDBOOK J ALL ABOUT ENGINES MORE COMING SiO95 EACH HARRY HIGLEY & SONS INC P 0 BOX 532 GLENWOOD ILL 60425 proven model help build Com bat success upon Tee Dee engines engine parts thin-walled fuel bladder tubing avail able Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Styro foam wing cores Halfilte other Nationals-winning designs available Core House 760 Waltonville Rd Hummelstown PA 17036 FFWC General/Cowley Continued page 89 does interest Free Flight continue flourish face generally wid ening scope model flying Much appeal can attributed simple purity beauty model released fly free responding changing weather conditions personal level infinite scope performance increase through aerodynamic experimentation structural refinements well-engineered design above ultimate level endeavor opportunity participate rewarding athletic event highest level sportsmanship unrestricted exchange friendship technical information between fellow com petitors around world ex plains enduring hold category competition FFWC Gliders/Cowley Continued page 91 uses full-span wing molds made stable mixture sand epoxy framed metal tubing Orels models ex ceptionally high standard such tech niques now being applied Free Flight models interesting speculate whether builder-of-the-model rule will day dropped has already happened RC classes traditional balsa D-box leading edge airframes continue norm competitors out extensive use reinforcement usually form carbon-fiber wing spar caps individual upper lower rib 176 Model Aviation TheNN. cFoldingBALSA WOOS wThg- A-i INTERCEPTOR Ready Fly $695 U-build Kit $495 Note Pleaseadd$3forP&Hforlat3modela. Add 10% price additional model Aw0~JA AIRCRAFT COMPANY PO Box65132 Portland OR 97268
Edition: Model Aviation - 1988/01
Page Numbers: 76, 77, 78, 173, 174, 176
in s necessary up surviva bility order have flyability cleverly thought out design USAF combat pilot doesnt have make such sacrifices Designer Larry Driskill poses model used win first place l/2A Combat 1985 Hats pressure suit helmet may bit overkill flying Combat model Larry happens Col Air Force Squadron Commander 99th StrategIc Reconnaissance Squadron After having logged hours full-size combat nilot Larry now flies U-2s like pictured behind him _ IF YOU ENJOY flying Control Line Combat will really enjoy flying Combat high-performance model trainer option initial prototype Haiflite built 1983 higher aspect ratio mod el fast flew well too squirrelly wasnt durable enough good contests wider-chord wing planform stronger construction current version solved problems plans presented show compe tition type also alternate trainer version novice pilots trainer torgiving easier fly all-out competition model trainer dif fering parts tail boom center rib nacelle two maple engine mounts longer Other size five parts two versions built same Left Note amount engine offset sanded mount Cox engine has modified Kustom Kraftsmanshlp fine-thread needle valve shims inserted base cylinder See text details Tee Dee mods Right stabilator fitted quick-change hinge arrangement joggle pushrod used control adjustments Strapping tape reinforces 76 Model Aviation Driskill Text John Hunton Evaluate experience objectives choose weapon either case Halflite will deliver super maneuverability small tough package Construction center rib assembly heart model good place begin As modern Combat models components attach center rib component sets design apart its contemporaries also gives Halflite its name Unlike Combat designs strive lichtness cost model Details Stabilator quick-change hinge shown previous page Its constructed %z brass tubing 1-in long uses materials like 36-powered AMA Fast Combat design -in balsa cen ter rib 1/2 x %-in maple engine mounts x %-in spars result half light model tough resilient will penetrate winds render super-light models almost unflyable ability Halflite turn quickly fly fast easy fly comes through clean efficient designand final analysis relative lightness things make model fine Combat weapon Cut center ribs /2-in mediumweight balsa especially careful ar eas maple mounts will glued make truly square cuts Use coping scroll saw cut slot Sig /2A ny lon belicrank slot should provide tight fit bellcrank assembly pivots slot must also provide plenty clearance lead-outs will no chance binding January 1988 77 Left Several iterations Halfite evolved todays design thats shown bot tom lineup Above final version shares ruggedness prototypes corporates substantially chord wing Below Combat too much now youre helping junior birdman get wings version longer moments ticket U Design Larry Halfilte Major Wins 1984 NationalsReno NV First Place Open Driskill 1984 MACA Standings High Point Winner Driskill 1985 NationalsWestover MA First Place Open Driskill 1986 NationalsLake Charles LA First Place Open Pat Wilcox Second Place Open Michael Wilcox First Place Junior Andy Minor biggest differences between model other /zA Combat models big solid center rib Larry says ruggedness reliability essential top Combat model Full-Size Plans Available Page 186 IO 1155 5-r OVTS& DEE 044 35105 /T /INNTALLMTh ITO tIlIIT 7 e eVTOJT ALTIPNAI WIAWNILAM&NT 7APU MCVNTITOPAN7 SOTTM 416cams EIb TEMPLA7 AL EAL FILAA4 SN i4tI IE A5SWV -OA TWAINEE ~ESIN TAIL CA TEMPLATE rAINE #4A COMBAT L55IGNLP PY JLL *2I J7UN7CN J4I S AO WISE HINF TA BOOM WA ITA ATOC Vi] SAL NOES SI0AL - EIaDs E ENOINE LAO EALV4 CNTEE SIP PALANCS POIN4- NAIL LILToWAFWDTIPWEINT 7 OF TPOO SELLCEAN SELLCSATW AVAFT FOAM WW& -STAR3i~IIjIii 111*15flMITATS TIP OIFO OO SS 1Ik 0001 ThMRATE FOE CSE WINO OVig VAAL5A WINO TIP Draftsmans notes addition complete structions building Halflite article cludes tips Larry Driskill engines propeller selection fuel sound philosophy design approach Combat flying Before Larry moved away Washing ton DC area serve country flying U-2s good fortune work him devel oping Geophysical Combat design May 1985 Model Aviation some modelers just have stuff together Larry ot As will see reading text designs fastest lightest flashiestbut among best sound advice herein applicable other model types John Hunton Note maple engine mounts rounded back ends fit center rib prevent stress concen trations Pre-glue both center rib engine mounts white aliphatic glue has thinned part water three parts glue Allow glue diy completely apply another coat glue Assemble parts clamp let assembly dry thoroughly glue completely dry face off both sides assembly sanding block sand three degrees engine offset mount Accurately align Tee Dee 049 centerline center rib Drill %2-in holes 2-56 machine screws will hold engine Countersink board side mounts depth / %-in drill Temporarily mount engine draw 2-56 blind nuts place Remove engine Apply cyanoacrylate glue CyA hold blind nuts securely mounts wont work loose af ter balsa nacelle applied Cut nacelle/stiffener A-in balsa can bit lighter balsa used center rib Glue balsa fair ing place inboard side center rib Glue block /2-in balsa onto front mounts nacelle Use Dremel tool sanding drum radius inside balsa nose block fit engine cleanly Carve sand fuselage assembly streamline faired shape Leave wing mount area flat Drill bellcrank shaft mount bellcrank assembly complete cable lead-outs Trim wing cores plan shape notic ing different wingspans indicated plan Notch inboard core fit fair ing block Glue inboard wing cen ter rib white glue epoxy use white glue allow plenty time curing white glue dries slowly contact Styrofoam Hold wing accurate alignment masking tape Bend end pushrod Z shape required Note pushrod acts bellcrank stop contacts cen ter rib Install pushrod innermost bellcrank hole Drill outboard wing core accept Estes BT-50 rocket tube fuel bladder tube 15/16 spade bit Install -in balsa end plugs glue tube place wing inboard wing/center rib joint has set pre-fit outboard wing assembly clear controls glue position Again secure masking tape until cured Dont forget install pushrod before gluing careful foul part control system glue Test controls frequently during assembly ensure remain free smooth Glue -in ID eyelets proper posi tion inboard tip rib Glue inboard rib place white glue Press two four-penny nails outboard wing core tip Remove Fill holes white glue push nails again leaving heads flush surface tip Glue outboard wing tip place being certain get some glue nail heads will glued rib well Styrofoam Glue spars place being careful ensure good bond between spars center rib Also sure spars fit tightly tip ribs glued se curely certain spars flush wing surfaces Use white glue assembly Hold spars place masking tape until glue cures Sand wings 600-grit paper flat sanding block Blow sanding dust off foam add strapping tape top bottom wing omit tape important keeping wings swinging forward case Halflite has sudden meeting ground Cover wings low-temperature film Sealamin works fine does Fascal Higher-temperature coverings easy use because tendency foam melt before covering sticks cover bottom wings first overlap covering leading edge covering top Cut fuel bladder access drain holes Fuel-proof seal around holes epoxy also use slow-cure ep oxy such Hobbypoxy Formula II seal fuel-proof finish engine mount nacelle Coat tail boom good fuel-proof paint recommend pick fav orite color stick Combat models also cover inboard wing tip same color easy identi fication heat battle Assemble stabilator hinge shown Continued page 173 78 Model Aviation CP VIEW eoe VIEW VSMLEA WINOTIP fuel bladder made up surgical tub ing thats also available Kustom Kraftsmanship California 714/830-5162 especially bubble canopy Hi designed eyeball Gil came over Lockheed May 1952 asked come back Veco new improved terms did course managed stick out until around end 1953 pleased accept Ken Adams bid come down Anaheim join him Hi Johnson Kenhi Im sure glad did Ken nicest guy work Ive ever met thanks Joe Wagner sharing im portant part Stunt history us hope youve enjoyed special glimpse past much have Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Racing/Ballard Continued page 73 Racing St Louis am happy report Racing St Louis area once again upswing Contest Director Gary Frost first contest quite some time October 4 thorough success plans two contests 1988 first Sunday May first Sunday October Gary promoted contest both telephone calls letters effort rewarded competitors three states Mike Greb came way Texas fly Scale Race plus Fast Slow Rat Scale Racing won Bob Oge cx- cellent time 60507 Fast Rat won Larry Dziak Jr time 45165 Larry D Jr also won Slow Rat 604 12 dad won Sport Race 4564 excellent times concrete circles Buder Park topnotch Gary also planning series Speed contests run conjunction 1988 Racing meets Speed people will want put St Louis contests calendars Cloudhusters Club Detroit MI has revival Racing Detroit area ex tremely strong Racing events 1962 through early Seventies Combat less replaced Now Paul Smith colleagues have rejuvenated Racing area Cloudbusters CL Racing contest September 27 Ford axle plant Sterling Heights featured Mouse Racing type Sport Racing have called Slow Combat Racing am enclosing photograph Pauls group taken during September 27 meet Rat/Scale Race control wire construction have several requests concerning proper method making up ends control lines events think best method wrap ping found AMA rule book Con trol Line General section Figure No 1 No 2 concerns proper construction wire ends solid-strand control wires buy typical spindle/spool-and-wire kits use wire included found wire little too thick try drop off about 005 using some fine copper wire electrical shop double-wrap over lap closely spaced turns copper wire least inch Instead soldering wire-end wrappings have using one-hour slow-cure epoxy glue past have several wires break 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other exhibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swap Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peek skill NY 10566 day Ticket Two day Ticket under 12 yrs day STATIC COMPETITION models must operable NC controlled Trophies andlor prizes awarded VCRs awarded two categories BestinShow flying Best-inShow non-flying Top live NC systems tor 1st place category Trophies Other winners WWI SCALE BC BOATS poso awl Ivilatli lfAiSAIYI POST aWl SCALE BC BOATS INan-MIllarAl INar-ClilaIhl PSTTEBN RACINO B/C BOATS SlANT SCALE SOAkS-OFF SCALE OLO TIMERS BC CABS 1/10 sear JONIOR EVENTS BC CARS 1/10 BeAr SPORT BC CARS 1/B scale SLISERS 101501 HELICOPTERS EFOT-IN-OBOW EIreval 011110 duet space aaalabltt obtain pTa-registration Static Competi tion forms write lincirode self-addressed stamped enoelopel Allen Reinhardt 2 Douglas Drive Pleasantville NY 10570 Judging takes place Sunday afternoon DIRECTIONS TOt Tonke, Racewup localed SOatflen westoheure CoanIn along tIle Etutelt Notlbsand Side 01 thu New Tonk Srale Thuwal 11-871 I-ST Soatn Eot 4 Seoioe oad 30 Inutfic light Tan left love Torawuni toenre nukinuueu PROM THE SOUTH I-ST Nslth Exit 2 St let tattle lluht laIn sent nakinueee soldering epoxy seems work very well no heat stress wire sol dering clear epoxy wires can visually inspected time used can avoid kinking lines plas tic storage reels installing -in-long 2-56 bolt through side reel head inside near line-slot side using protruding end anchor line clips wind up lines eliminates need bend lines through slot order hitch line clips built-in plastic tabs As always comments photos solic tted John C Ballard 10102 Kimblewick Dr Louis ville KY 40223 Half ite/Driski II Continued page 78 Glue %2 brass tubing place thick CyA double-glue 5-mm epoxy Apply strapping tape Note tape Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-op models Registration models will start 830 am morning SWAP SHOP WRAMs Swap Shop has become malor show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregistration forms receive forms send self-addressed stumped envelope John Isbister 4 Devon Rd. Lurchmont NY ioss SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further information write enclose self-addressed stumped envelope call Jerry Judge T Nancy Road Srewsfer NY 10509 514-275-2717 RADIO AEROMODELERS INC 21/2D 10 AM 6 PM used beef up area under control horn Also note stabilator offset toward outside circle Cover stabilator plastic film Remove covering center body boom fits glue boom place 5-mm epoxy joint has cured install stabilator hinge tube CyA being careful align properly will level wing Mount stabilator A6 wire hinge certain movement free unre stricted Note dogleg bend pushrod throw adjustment also Z-bend elevator horn pre fer simple setup much break come loose Also stabilator readily replaceable case trouble Sta bilator adjustment made changing dogleg Trainer version construction same both models except January 1988 173 trainers longer moments nose tail Substitute longer center rib maple engine mounts nacelle tail boom shown plan will result mod el bit stablebut still ma neuverable fun fly long nose room enough Perfect No 19 fuel tank wish run hard tank suction system Compromises Perhaps unusual section put Combat model construc tion article once read aircraft designs product compromises tradeoffs full-scale aviation world have seen evidence thesis An example U-2 landing gear system Editor Lorry currently U-2 pilot U-2 has two landing gearwhich tandem arrangement both centerline aircraft Compared weight typi cal tricycle arrangement weight wheel assembly has eliminated weight saved has increased performance U-2 centerline gear however U-2 much challenging land tricycle-gear planes Compromises tradeoffs also come play during construction Half lite will have make some decisions between top performance durability first choice involves wing spars 1 Use spruce spars strong hea vier balsa 2 Use balsa spars youll have light weight may break 3 Use balsa spars carbon fiber reinforce ment center eight inches span wing will light strong expensive difficult build next choice engine mounts % x -in mounts shown plan can shaved down /16 x still adequately strong trou ble build however Finally wing cores can lightened hollowing out hot-wire techniques Again will lose strength especially thin cores less /l6 using three lightening choices will save about one-half ounce However machine will con siderably less durable Fuel system Fuel bladders made thin-wall surgical tubing Kustom Krafts manship Part #484 Keep simple just tying knot back end rubber-&UIF&CEJ Ige -a nrO AMERICAN JR onr ,m CAMPBELL T RITE DUBRO EASY BUILT MODEL5 FLYLINE FOX BERG DUBOIS LOW K&B MICRO X OS MAX RA IPECK-POLYMER ECT MODELS ISEAGLEN STERLING IVAN SUPER TIGER INDER FLITE LER 3WILLIAMSS PRODUCTS RS ESTES MODEL ROCKETS goad SI Ia Cub Check ow Stamps fec 31 page tabloid size DISCOUNT Catalog 900 illustrationsover 700 Kits go choose MAILOADER PHONEORDER IN STORE PENN VALLEY HAlEY CENTER 817 1 Main St Lanadalula 19446 banding surgical tubing length fuel line has 3A6-in length 3A2 ID brass tubing inside prevent collapse tube uninflated bladder needs 1 /2 long knot rubberband hold fuel four five minutes flight Engine Cox Tee Dee engine can run box-stock good results However few simple modifications will result powerful reliable-running engine single important modification replace needle valve assembly having finer thread Kustom Kraftsmanship Ace RC assemblies both produce good results set cylinder shims collar KK will allow adjust cylinder timing optimum power Follow instructions provided shims Drilling out intake venturi per Tee Dee instructions will boost top power However bigger venturi opening tougher set needle valve prop erly greater likelihood poor consistency Also combination higher-nitro fuel wide open venturi will result greater fuel consumption have used both Cox GloBee plugs good results easy over-com press engine suggest begin three four copper gaskets under whichever plug choose needle valve settings overly sensitive engine becomes difficult start add another gasket getting good runs con sistent needle settings remove gaskets time until get maximum power starting needle-valve-setting problems Control lines use lighter lines 012 steel cable AMA Combat rules call 35-ft line length centerline air craft centerline handle prac tice can slow things down bit using longer lines 40 ft maximum trainer version will fly well 40-ft lines will have add extra nail outboard wing tip weight Propeller three Nationals wins Halflite use Cox black 5 x 3 174 Model Aviation props dont look very trick tough apparently efficient just super model also have good performance Tornado 5 x 3 props can slow model bit 6 x 3 prop fuel economy will improve Fuel Small /2A engines least bit forgiving dirty otherwise contami nated fuel Use fresh fuel filter least onceeither coming out can going bladder have great re sults 33 %-nitro fuel Cox Racing Fuel also gives good results Make sure what ever fuel choose has least 20% oil minimum 5% castor oil Flying have flying Control Line Combat over 25 years have also logged over 900 combat hours Forward Air Control pilot southeast Asia have found Rule No 1 Forward Air Control business Rule No 1 success CL Combat same run ground Other axioms CL Combat success ThERE ARE NO SECRETS LIQUID FINISHES MASTER MODELING DESIGNING SCRATCH BUILDING 1 Practice Practice alone practice flying buddies practice entering contest can practice un til flying becomes second nature 2 Keep flight ground equip ment simple have minor trouble equipment practice will nearly always have major trouble heat battle 3 Dont sacrifice reliability consisten cy minor performance gains par ticularly true engine involved Combat speed event Running ultra-high-nitro fuel high-compression head wild port timing gain couple mph may make plane crowd pleaser extra performance comes expense reliability consistency will win Combat matches 4 Know ground rules Read AMA rule book dont make mistakes ignorance rules Flying 1/ZA Combat successfully involves hard work disciplines preparation engines practice etc Halflite design TOMS TECHMOUES MONOKOTING FLYING AROUND OLD TIME U CONTROL HANDBOOK J ALL ABOUT ENGINES MORE COMING SiO95 EACH HARRY HIGLEY & SONS INC P 0 BOX 532 GLENWOOD ILL 60425 proven model help build Com bat success upon Tee Dee engines engine parts thin-walled fuel bladder tubing avail able Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Styro foam wing cores Halfilte other Nationals-winning designs available Core House 760 Waltonville Rd Hummelstown PA 17036 FFWC General/Cowley Continued page 89 does interest Free Flight continue flourish face generally wid ening scope model flying Much appeal can attributed simple purity beauty model released fly free responding changing weather conditions personal level infinite scope performance increase through aerodynamic experimentation structural refinements well-engineered design above ultimate level endeavor opportunity participate rewarding athletic event highest level sportsmanship unrestricted exchange friendship technical information between fellow com petitors around world ex plains enduring hold category competition FFWC Gliders/Cowley Continued page 91 uses full-span wing molds made stable mixture sand epoxy framed metal tubing Orels models ex ceptionally high standard such tech niques now being applied Free Flight models interesting speculate whether builder-of-the-model rule will day dropped has already happened RC classes traditional balsa D-box leading edge airframes continue norm competitors out extensive use reinforcement usually form carbon-fiber wing spar caps individual upper lower rib 176 Model Aviation TheNN. cFoldingBALSA WOOS wThg- A-i INTERCEPTOR Ready Fly $695 U-build Kit $495 Note Pleaseadd$3forP&Hforlat3modela. Add 10% price additional model Aw0~JA AIRCRAFT COMPANY PO Box65132 Portland OR 97268