FiA Technicalities big report World Championships such author has done us before never seems give enough room tell about innovations techniques seen Thats again looking 1983 Free Flight World Championshipsthis month especially A-2 Glider event FlA EMartyn Cowley THE CURRENT FlA GLIDER World Champion Matt Gewain sec ond American win title since Nordic event became WC way back 1946 first late Gerry Ritz 1959 Matt has leading Free Flighter Florida now living three 1983 team members came same state Like other two Florida fliers Matts models feature much use carbon-fiber reinforcement material has become very desirable reinforcing wings make strong lightweight struc tures able withstand enormous loads imposed during zoom launches Pre-cured carbon-fiber easiest form modelers use now available mail order Matts team mate Jim Bradley 1337 Pine Sap Rd Orlando FL 32817 Twinn-K dis Note hook pivot behind Atomring giving backward er line spring roAookad1ust hook position Tow ring front model CG Mom towheePenont signols latch opens timer starts Notw pivoting towhook balanced redder spring timer start spring ok will now stay position / flier chooses during tow / Timer stert ossembly tormord spr ng 80 Model Aviation SECTION A-A 25 A105 tributor model shops sheets uni-directional pre-cured fibers 008 010 thick can easily stripped small widths suitable capping spars Thick cyanoacrylate glues work best slow-cure epoxy Matt used Dremel Moto Tool router attachment inset carbon-fiber strips wing trailing edge models well reinDownward pci1 hook releases timer start arm Ie 14-C-1412 it~J L timerGuid 7VLJ 0506 light allay Eaceplate Switch loses timer Ten p ng sa fu Arm moves start timer vane Tension spring balances rudder spring give hook equilibrium DETAIL mm w C odeed n2mmod tube World Champion Matt Gewainstow hook installation Note Horejal-style rudderdelay slider toward rear tow hook plate controls zoom launch Spring iong wire reicased timer Gewains winning Pacer will featured future issue MA Yugoslavian hook-operated Seelig timer stan used Mirko Karamovic shown photo two drawings upper drawing concentrates tow hook right features timer start mechanism Illustrations courtesy ofAcro Modeller forcing leading edge center sheet ing Matt says earlier Pacer models de veloped spanwise shear cracks center panel sheeting until incorporated car bon-fiber shear web consists two layers glued 450 other under balsa sheet main spar massive x ce member tapering 3/16 x 1/16 dihedral breaks save weight Matts models have large-diam eter steel wing joiner rod trailing edge wing half being taped wing mount fuselage allows side adjusted incidence indepen dently perfecting zoom launch tran sition glide describes trimming technique thusly shim under wing trailing edge 1/64 ply vary rudder delay get lateral trim models use Ivan Herejsis style timer-delay rudder set can hear click just before model rolls out zoom glide overhead change center gravity CG position moving nose weight change pitch trim during zoomfor ward get model pitch up higher improve stall recovery back get flatter less loopy zoom Matt continues would like com mend Australians put together fine World Championships thank US team members supporters essential part success significant problem kept breaking tail boom windyweather model dethermalized land ings windy practice days So fly best thermal model trimmed calm-to-moderate winds through whole WC Consequently through windy rounds picked thermals ground verified lift two circles line before release flown windy-weather mod el has less performance may have missed maxes 7th 8th rounds liftwas very weak ability fly tactically other models may have made possible locate stronger lift thing sure circle towing high winds gave competitor chances get trouble drop flight outstanding Glider fliers dropped max because wind Towline style Towing F lA Glider using line minus winch becoming universal style fliers prefer pull line hand over hand running quick-and-easy method controling towline bother using winchwhich can produce troublesome tangles reeling out real advantage towing winch comes moment releasing model Accelerating Glider towards top tow zoom release climbing turn gain additional height has long favorite tactic Without winch flier releases end towline greater launch height can achieved flier no longer needs grab wasted handful slack line prior release order make model come off line Another benefit comes flier gets difficulty towing using line can release end prevent line tangling flier ever releases winch penalized zero score under no throwing winch rule surprising Australian FF WC however see fliers showed poor towline style accelerate models overhead chose haul handsful line speed up Gliders instead positioning models firstto accelerated fast sprint wasted yards towline negated zoom VIT nrnet give Stondord KSB2 recoed deloyAm type 4 Tinrer mith tripped towbook extended remote C \ Thin wire Start Oe/off stort ore odded switch detoil Toilpione troiling edge roised daring tow Corbon fibre tail boom Pivot Spring launch advantage models otherwise might have achieved Chinese example showed good form running end line held high arms length justbefore releasing towline would place end line 6-7 ft above ground sinking speed F 1 Glider about 1 ft/sec good zoom 15 20 ft translates maybe 15 20 seconds being gained Also fair assume line will have stretched extra 10-15 ft under higher tension launch 2kg pull used check length line originally easy see thus good towline style releasing model can pay off significantly higher flight time irrespective individuals model Timer start setups What releasable towline requires towhook-to-model April 1985 81 two photos drawing show simple timer start mechanism used Chi nese modeis activate KSB-type timers Notches timer disk extra function arm operate positive VIT per drawing lower right model being circie-towed setup allows line fall away freely hanging up achieved big problem area becomes start dethermalizer timer old pin-and-line system just wont work because flier having let go end line can no longer tug pull pin Most fliers using latch-type towhook now have some type timer-start mechanism operated until tension towline just before zoom opens latch Another problem arises especially flying windy conditions such experi enced Australia What happens gust wind unexpectedly unlatches tow hook Simply put dethermalizer timer will started will probably set close 3-mm max flier almost compelled release immediately whether wants to prevent dethermal izing short 3 mm Electric timers new electric timers provide solution problems also add risk model flyaway should flier release line starting timer towline cut during line-crossing another flier Electric timers set up run-down continually during tow time flier pulls towline however microswitch resets clock full 3mm way doesnt matter hook gets unlatched gust because further pulls towline will still reset timer least flier has option continue towing although straight increase chances still making good score lift Two excellent electronic timers available F 1 Gliders Thomas Koster top FAI flier Thomas Continued page 173 82 Model Aviation Japanese loudest A-2s field used miniature electric buzzers see battery hatch Note cover on/off timer switch keep out dirt Nice detailing Tall surfaces Mirko Karamovics model feature neat slotted stabilizer rear ward fin Photo credit Martyn Cowley Jim Bradleys excellent circle tow hookavailable mail orderfrom address thetext complete wires timer start auto rudder adjustable tow hook plate nturIIng model Paul Sunr irinmung usus numemage carbon-fiber tubes plus carbonfiber rib cap strips Fishing line 3mm invigorators span ribs underneath covering viii after reading fine iooks new work contains obscure utogyros CO-2 power traveling riodels some great Fairchild 22 threejews data number simple cale models some profiles go long present profile scale craze end $895 plus buck postage few ents governor live alifornia first kid block o have three Bills nifty books vfodel month month alute Jack McCracken museum uahty FF Scale Gloster IV-A won last Flightmasters ROW Lake Elsi tore CA Built Aeromodeller hree-view l-in/ft Jacks model spans ust short 27 weighs 10% oz F3owered enclosed DC Dart diesel 035 displacement plane no trou le getting off water Gloster sheeted back cockpit has sheet d floats A2 rest being stickmd-tissue finished Aero Gloss dope anall water rudder added right float straighten out takeoff run md ship realistically rose sur race climbed out gentle lefthand attern minute later power ut transition LH glide erfect landing picture-postaid quality model just little ight down thrust engine lew neutral control surface adjust nents knock-off wings floats yere held place rubberbands lue outstanding flight characteris ics Gloster never got tested Well gang until meet back wo months help Junior think safety md never play leap-frog unicorn Bill Warner 423-C San Vicente Blvd santa Monica CA 90402 FlA Tech/Cowley Continued page 82 timers cost $5500 including battery start switch trickle charger extra $3000 Koster Digital PO Box 54 DK-3400 Hillerod Denmark other electric timer made California Ken Bauer units available sell about $3000 no accessories electronics goodies Convenience reliability will surely force major swing over electric timers battery board model other options present themselves competitors Aus tralian WC used miniature buzzers help locate models downwind notably Dutch Japanese teams Australias Yin Morgan used small radio transmiter produced signal could tracked receiver carried retrievers Yin explained gadget symposium held during WC device may illegal some countries ultimate age increasing use thermister lift-detection devices install Gliderwired directly retrieval buzzer Such electronic Nordic would allow flier monitor air being towed through listening Continued page 176 --&%wVvu HELLO SUPER SHRThK April1985 173 BYRONVIDEO TAPE Byron Originals 1/5th Air Force STRIKING BACK exciting WWII Air Battle Reenactment Informative interesting Byron Originals factory tours production techniques eReviews both Jet Rally 84 Fun Fly 84 Enjoy 30 minute video tape comfort home rfect material club programs personal copy send $2000 Byron Originals Box 279 elda Grove Iowa 51445 Ph 712-364-3165 Please specify VHS Beta format PermaGritTM Carbide Sanding Tools STEN CARBIDE -Mans hardest material next diamond. BRAZED TO..made STEELUSA Average ModelersFLAT TOOL 040 X 11/2 X Use ii9 use balsa hard woods e7 fiberglass beaded foams epoxy fillers plexiglass DARE YOU TO TRY IT MONEY BACK GUARANTEE FOR MAIL ORDERS ONLY check M 0 ONLY $6~ No Stamps No COD SEE YOUR DEALER FIRST OR SEND FOR COMPLETE LIST OF S TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayton OH 45429 513 294-1192 loser. adde%T.l ELECTRIC NOEL & SAILPLANE SPECIALISTS 1981 World Soaring Champ DWIGHT HOLLEY IS PROUD TO ANNOUNCE NEW COMPANY TO HELP BOTH BEGINNER & EXPERT FLY INTO THE NEW ERA OF ELECTRIC AIRCRAFT WE ALSO OFFER SELECT FEW PURE SAILPIANES FREE DEMONSTRATION FLIQI-ITS CHECK OUT AND/OR TEST FLIGIEES OF VUR NEW PLANES CALL OR WRITE FOR FREE DESCRIPTIVE FLYER UPS COD FOR IMMEDIATE SHIPMENT ELECTRIC KITS IN STOCK AEROBATIC OLDTIMER SPORT SCALE GLIDERS HOLLEYS SILENT FLIGHT 203 748-0083 151 CHESTNUT RIDGE ROAD BETHEL CT 06801 FEATURING ONLY STATE OF ThE ART ITEMS 1 2 HI 8 C 8 HI FIA Tech/Cowley Continued page 173 rising falling pitch buzzer could heard easily 164 ft below ground marginal conditions extra input information could help confh-m center thermal flier has located electric circle-tow glider Too windy As new World Champion Matt Gewaln pointed out good fliers unable cope high winds Australia conventional circletow models As things turned out simple straight-tow model would have suitable such conditions high wind speed would lift models stralghtto top line once overhead Gliders would enter unwanted circle rudder kicked over Yugoslavian hooks Only Yugoslavian team seemed have complete mastery conditionsusing original Issaenko concept timer-start spring front balances auto-rudder spring back system hook equilibrium fore aft hook pulled forward straight tow stays allows model kite over head Only model flies upwind flier runs back pulling backwards line does hcok swing back initiate circle gives flier much better control Glider because can select exact moment wishes model begin circlingmost important windy weather Sharp-eyed readers will notice tow hook setup doesnt require forward rake pivot point ahead tow ring attachment point would give too stable hook flier might able pull back circle mode Instead Yugoslavian hcok has backward rake basically unstable hook stabilized balanced pull timer-start auto-rudder springs setup worked well Yugoslavs including Mirko Karanovic placed third Paul Lagan WC saw another excep * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH 1085- INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 L SILICONE 10 toot consTUBING ID 062125U S POST S/coil 235 265 3 2554$ co L LARRY DODGE AERO INC 10 MANtdINGSTiLLWATER MN 55082 USA OVERSEAS ORDERS WELCOMED AIRCRAFT PHOTO PACKS Photographs modeller aireratl enthuniant Ken P Kalynuk 12041885-2090 389 Moorgale SI Winnipeg Manitoba Canada R3J2L6 tional performance gentleman now Australian national fourth FiB 1979 third FlA 1981 second FlA 1983quite record Although flew AL-29 Robin contest interesting model new Big Apple named after models inspired design Lee Hines latest Big Max Andres Lepps AL-29 -33 German SPL design own initials PL Paul says new model has 10-15-sec advantage over COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks required change address Attach current MA maIling label check appropriate box mall Subscrip tIon Dept Model AvIation 1810 Samuel Morse Dr Reston VA 22090 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscrIption rates $1800 12 months US possessions elsewhere IncludIng Canada MexIco $2400 US Schools $900 US LibrarIes $1350 NAME ADDRESS CITY/cTATE 710 MODEL AVIATiON 1810 SAMUEL MORSE OR RESTON VA 22090 176 Model Aviation U -i z IL 0 K B 4 a n PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tuilahoma Tenn 37388 SUPER SALE hi ye dee q. d pee edi 484 Thee tqee eet di eethp te leeS Iqe d,d h peI.hel. 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UAA Jdi II IcS hee4 55 dI k,l p. d ebeet dll qlee .theOft .hi.$IH95 Mey MS tIll. eeIdh Spdly ETA 9I6l. ed.lq Ceffidieeko y edn eel se ceo VideoTech PO Box 1917-30086 Stone Mt GA 30086 QEYELAND GIANTS ~katNEW FOR GIANT SCALE BUFFS Worlds Largest Gas Plans Assortntent INTERNATIONALLY PAMOUS cD GUALIfE blASTER MODELS PLANS 5i5DiOwoiell 2t $48 I— 78Cono/ Cot PSYSA 542 72Cm 0211t/4 185 54& 04 Ce Cot PRYSA 536 62 Howord See 1k $459 _ gb Neoyleo S4so- 77 soclng B-I 70 Pen $30 02 WWn12t 34 L 536 t03 So 517G Pen $50 7WWwt21 Sd L SAn 65 Doog 0-ll6A 05. 532 54 Pokk D7 Pt $39r t58 Dikor 5-38 Awpb $49 60 Howerd PM Sm $32r 60 So. tOO 5pe $36 Boyle Gao-Be $32 PD Bee toDOport $49r 60 Sopereerin 568 $24 90 StinALow Wing $06 $ Sopnwoin DAB $32 50 Manin 74 TAM-t $59 62 Con Hewk P-AR 545 78 99g 0400 Bonb 542 4 CoHek P6D Pt SS4r 104 H-Pg 5450 Roe 506 62 Eookbaed Vego 524 60 MCbina Cl/ppm $55 74 Doolinlee 0-5 Ii 548 97 MCI/no Cl/ppm 575 Monoooop Sport $36 65 Wet/ Whirlwind $22 Hell Spe BolMog $43 68 Ryeo Non/en$39 07 AerOnce C-S Spt 530 65 5Bonone VTe/l $29 1 Dooglee 0-38 0$ $22 77 Leeewk Sedon $25 22 Single O-38Ob $47 72 N Mitch Sowb $49 4 Peg. Con See $45 60 MMornodnr 826 $49 7t Men/n StO Bennb $29 8t OH Moeqoito 5k $42 Ton. WW See $30 tOO OH IdeqoBonb 805 53 Cm Ooelcb Pt tC2 $42 98 Steer PTt7Koydet 556 94Cc Geehb PttC2 80499 NBlk Widow P61 $69 DeHen Cenren Soc $24 71 Deog DC-2 Tren $32 62 Hne Mn MelIlgen 035 92 Doog DC-S Tren $50 4 M Mclligon $4S 86 Hewbe Teoeo t2 $32 62 5oncg P266 Pt 526105 Con02U1/4 L&S ESA 84 5o/ng P-26A Pt $48 60 Doogle M-2 Mo/I $24 9 Woce C6 Cebin $366s Britel Bolldeg Pt $30 64 Beenk C17B Seog 82$59 SrownSonMLA $04r 94 Beoch C 17-B Steg $49r107 Goon Seeret P$P $04 05 Leck t 1 RIote $3075 Teol Al 6000 824 83 Look 11 EIotre 540107 Mon IdS-t Ron $44 62 St/neon TW DR7 $t69t Lindbere NX2t1 $29 St St/neon T/W SR7 $34108 PerobPTt9 Sr $59 225 non T/W SR7 528 90 Weno teperWing $39r 59 Br tol Pt P2-fl $2070 WestinI Lyende $32 t P2-s 552100 Wetld Lyondn 849 Pt P2-B $40 57 Po4 Trint 4-AT 82$ en e Op. $40 76 Pord 1/not 4A1 $43 XF3P-t $20114 Pord Trio, 4AT $59 osR.AoW rbk P40 $2484 RerIJoyc XPJ-2 $56 tno P28 $2893 conIng C-2Awph $69 RepSeoB Awph 83978 Gnwj2P ISonk $06 S Sep See-Roe Aw $54SR Grow fl-P Dock 829 06 P/pnn J3 Cob $2959 Gothe 0tV Bow $22 98 Look Hodon Bob $38117 Onthe 0-tV 8ow $39 63 Orooc PAF Helkot 02868 BonWiohle B/4 540 90 OH 82 Tioc MotI 559 04 Con Sw/It TP934 028 Sold Tho Otolr oblnnt nhenge 10 *flEK PRICE coolCAnEcOlOItnEe SiLO 01*00 PLOOn, 1200 Other 6 720 Pette IncI SOc Up Add 10% eli odnr hipp/ng & in. etc. o USA Con & Mee Elowheo 15% /25% /1 0/rI P cto el cotolog 5200 linclode Print [intl Proe lit ncto oboe DIOS Ilky em toremgn odd 5100 CLEYELAND MODEL & SUPPLY Co coofto neooni*,6e-s eneIltcolinnn tie 0010 30010 12101 norsoon CLEVELAND OHiO 44182 youre familiar ZAPTM CA know its superfast super-adhesive Yar. also know instances neec rime make final positioning adjustments orfill gap SLO-ZAPTM allows time up 2 minutes get everything just right Its high viscosity maximum gap filling maximum fillet forming slow cure cyanoacrylate* limited time will include 1/3 oz sample Z7TM DEBONDER purchase SLO-ZAPT * Use our ZlP-KlCKElfor immediate cure after obtaining final alignment Pacer Tech 1600 DELL AVENUE CAMPBELL CALIFORNIA 95008 408 379-9701 1 removes cured cyanoacrylates skin wod surfaces etc youre sometimes slower SLOZAPTM Z7TM will give second chance Z7TM DEBONDER odorless will nor craze plastics comes safer water based chemistry know youre going like SLOZAPTM Z7TM DEBONDER wont get stuck Available now leading hobby shops everywhere Regional Waehoosing Sales Offices FRANK TIANO ENTERPRISES 620 RTE 32N NEW PALTZ NY 12561 914 650-9906 House ci Balsa 34 ROSO thers calm air better conditions xpected 1985 WC Yugoslavia iany others may try approach honestly thought Burgos close s Id ever get FlA win said Paul Im still little surprised sult Goulburn Notwithstanding still hudderwhen think flyoff because hould have done lot better Paul says rill unable make trip 1985 Tugoslavia great pity may ave another go 1987 Paul said r now Im enjoying other pastimes Ve hope make Paul Museum/Willoughby Continued page 87 Golden Age Flight Section two fantastic decades1919 1939aviation America truly came age During time world flight profoundly affected number historic aero nautical milestones Noteworthy barnstomers flew World War surplus aircraft outlying areas intro luced general public airplane basic Jenny entranced inspired countless thousands hrill flying Fly 15 minutes pitch experience nwittingly influenced public acceptance f air travel soon become reality Establishment Air Mail Ser vice added further momentum publics acceptance airplane during era aircraft factories started San Diego two famousConsolidated now General Dynamics Ryanbegan building test-flying airplanes founders both firms representative aircraft have place honor museum display Ryans M-1 Brougham ST Consolidateds PT-l Trusty Fleet 2 Other Golden Age airplanes Cur tiss B-i Robin Aeronca C-3 American Eagle A-I Morane Saulnier MS230 Gee Bee Model Z Rearwin Cloudstar Waterman Aerobile World War II Germany invaded Poland 1939 aviation-minded people turned thoughts energies application then-present aircraft meet requirements ever-widen ing war expanded designed new aircraft Represented display period time Ryan PT-22 Stearman N25-3 7A0th-scale Junkers Ju-87 dive bomber Supermarine Spitfire XVI Grumman F6F Hellcat Grum man J2F Duck Postwar civil aviation aircraft displayed Smith DSA-1 Miniplane Jungster VI Pitts Special Wee Bee Mercury Air Shoe String single sailplane Glasfluegel Libelle Jet Age Germany first Great Britain Japan United States developed flown operationally-capable jet fighters before Axis powers defeated surge jet air travel initially began British Comet Passenger service between London South Africa May 1952 set pace rest world An Air Force contract determine feasibility vertical takeoff landing generated Ryan X-13 Verti-Jet flown off steps Pentagon final demonstration before being placed Air Museum two built other jet fighter very durable Douglas A-4 Skyhawk termed smallest jet used aboard US Navys aircraft carriers supposedly capable atomic weapons delivery Man Space Section contains mock-up Space Shuttle cockpit uniformed mannequins con trols rock moon encased plastic However museum officials stress space travel section complete likelihood will con tinue expand long manned/un manned space travel exists Women Aviation Amelia Earharts likeness story life uniforms military women occupy area other women feats extolled will greatly add viewer s knowledge vital part women played aviation Model Section Under glass models top-notch museum quality composite visual picture aviation April1985 177
Edition: Model Aviation - 1985/04
Page Numbers: 80, 81, 82, 173, 176, 177
FiA Technicalities big report World Championships such author has done us before never seems give enough room tell about innovations techniques seen Thats again looking 1983 Free Flight World Championshipsthis month especially A-2 Glider event FlA EMartyn Cowley THE CURRENT FlA GLIDER World Champion Matt Gewain sec ond American win title since Nordic event became WC way back 1946 first late Gerry Ritz 1959 Matt has leading Free Flighter Florida now living three 1983 team members came same state Like other two Florida fliers Matts models feature much use carbon-fiber reinforcement material has become very desirable reinforcing wings make strong lightweight struc tures able withstand enormous loads imposed during zoom launches Pre-cured carbon-fiber easiest form modelers use now available mail order Matts team mate Jim Bradley 1337 Pine Sap Rd Orlando FL 32817 Twinn-K dis Note hook pivot behind Atomring giving backward er line spring roAookad1ust hook position Tow ring front model CG Mom towheePenont signols latch opens timer starts Notw pivoting towhook balanced redder spring timer start spring ok will now stay position / flier chooses during tow / Timer stert ossembly tormord spr ng 80 Model Aviation SECTION A-A 25 A105 tributor model shops sheets uni-directional pre-cured fibers 008 010 thick can easily stripped small widths suitable capping spars Thick cyanoacrylate glues work best slow-cure epoxy Matt used Dremel Moto Tool router attachment inset carbon-fiber strips wing trailing edge models well reinDownward pci1 hook releases timer start arm Ie 14-C-1412 it~J L timerGuid 7VLJ 0506 light allay Eaceplate Switch loses timer Ten p ng sa fu Arm moves start timer vane Tension spring balances rudder spring give hook equilibrium DETAIL mm w C odeed n2mmod tube World Champion Matt Gewainstow hook installation Note Horejal-style rudderdelay slider toward rear tow hook plate controls zoom launch Spring iong wire reicased timer Gewains winning Pacer will featured future issue MA Yugoslavian hook-operated Seelig timer stan used Mirko Karamovic shown photo two drawings upper drawing concentrates tow hook right features timer start mechanism Illustrations courtesy ofAcro Modeller forcing leading edge center sheet ing Matt says earlier Pacer models de veloped spanwise shear cracks center panel sheeting until incorporated car bon-fiber shear web consists two layers glued 450 other under balsa sheet main spar massive x ce member tapering 3/16 x 1/16 dihedral breaks save weight Matts models have large-diam eter steel wing joiner rod trailing edge wing half being taped wing mount fuselage allows side adjusted incidence indepen dently perfecting zoom launch tran sition glide describes trimming technique thusly shim under wing trailing edge 1/64 ply vary rudder delay get lateral trim models use Ivan Herejsis style timer-delay rudder set can hear click just before model rolls out zoom glide overhead change center gravity CG position moving nose weight change pitch trim during zoomfor ward get model pitch up higher improve stall recovery back get flatter less loopy zoom Matt continues would like com mend Australians put together fine World Championships thank US team members supporters essential part success significant problem kept breaking tail boom windyweather model dethermalized land ings windy practice days So fly best thermal model trimmed calm-to-moderate winds through whole WC Consequently through windy rounds picked thermals ground verified lift two circles line before release flown windy-weather mod el has less performance may have missed maxes 7th 8th rounds liftwas very weak ability fly tactically other models may have made possible locate stronger lift thing sure circle towing high winds gave competitor chances get trouble drop flight outstanding Glider fliers dropped max because wind Towline style Towing F lA Glider using line minus winch becoming universal style fliers prefer pull line hand over hand running quick-and-easy method controling towline bother using winchwhich can produce troublesome tangles reeling out real advantage towing winch comes moment releasing model Accelerating Glider towards top tow zoom release climbing turn gain additional height has long favorite tactic Without winch flier releases end towline greater launch height can achieved flier no longer needs grab wasted handful slack line prior release order make model come off line Another benefit comes flier gets difficulty towing using line can release end prevent line tangling flier ever releases winch penalized zero score under no throwing winch rule surprising Australian FF WC however see fliers showed poor towline style accelerate models overhead chose haul handsful line speed up Gliders instead positioning models firstto accelerated fast sprint wasted yards towline negated zoom VIT nrnet give Stondord KSB2 recoed deloyAm type 4 Tinrer mith tripped towbook extended remote C \ Thin wire Start Oe/off stort ore odded switch detoil Toilpione troiling edge roised daring tow Corbon fibre tail boom Pivot Spring launch advantage models otherwise might have achieved Chinese example showed good form running end line held high arms length justbefore releasing towline would place end line 6-7 ft above ground sinking speed F 1 Glider about 1 ft/sec good zoom 15 20 ft translates maybe 15 20 seconds being gained Also fair assume line will have stretched extra 10-15 ft under higher tension launch 2kg pull used check length line originally easy see thus good towline style releasing model can pay off significantly higher flight time irrespective individuals model Timer start setups What releasable towline requires towhook-to-model April 1985 81 two photos drawing show simple timer start mechanism used Chi nese modeis activate KSB-type timers Notches timer disk extra function arm operate positive VIT per drawing lower right model being circie-towed setup allows line fall away freely hanging up achieved big problem area becomes start dethermalizer timer old pin-and-line system just wont work because flier having let go end line can no longer tug pull pin Most fliers using latch-type towhook now have some type timer-start mechanism operated until tension towline just before zoom opens latch Another problem arises especially flying windy conditions such experi enced Australia What happens gust wind unexpectedly unlatches tow hook Simply put dethermalizer timer will started will probably set close 3-mm max flier almost compelled release immediately whether wants to prevent dethermal izing short 3 mm Electric timers new electric timers provide solution problems also add risk model flyaway should flier release line starting timer towline cut during line-crossing another flier Electric timers set up run-down continually during tow time flier pulls towline however microswitch resets clock full 3mm way doesnt matter hook gets unlatched gust because further pulls towline will still reset timer least flier has option continue towing although straight increase chances still making good score lift Two excellent electronic timers available F 1 Gliders Thomas Koster top FAI flier Thomas Continued page 173 82 Model Aviation Japanese loudest A-2s field used miniature electric buzzers see battery hatch Note cover on/off timer switch keep out dirt Nice detailing Tall surfaces Mirko Karamovics model feature neat slotted stabilizer rear ward fin Photo credit Martyn Cowley Jim Bradleys excellent circle tow hookavailable mail orderfrom address thetext complete wires timer start auto rudder adjustable tow hook plate nturIIng model Paul Sunr irinmung usus numemage carbon-fiber tubes plus carbonfiber rib cap strips Fishing line 3mm invigorators span ribs underneath covering viii after reading fine iooks new work contains obscure utogyros CO-2 power traveling riodels some great Fairchild 22 threejews data number simple cale models some profiles go long present profile scale craze end $895 plus buck postage few ents governor live alifornia first kid block o have three Bills nifty books vfodel month month alute Jack McCracken museum uahty FF Scale Gloster IV-A won last Flightmasters ROW Lake Elsi tore CA Built Aeromodeller hree-view l-in/ft Jacks model spans ust short 27 weighs 10% oz F3owered enclosed DC Dart diesel 035 displacement plane no trou le getting off water Gloster sheeted back cockpit has sheet d floats A2 rest being stickmd-tissue finished Aero Gloss dope anall water rudder added right float straighten out takeoff run md ship realistically rose sur race climbed out gentle lefthand attern minute later power ut transition LH glide erfect landing picture-postaid quality model just little ight down thrust engine lew neutral control surface adjust nents knock-off wings floats yere held place rubberbands lue outstanding flight characteris ics Gloster never got tested Well gang until meet back wo months help Junior think safety md never play leap-frog unicorn Bill Warner 423-C San Vicente Blvd santa Monica CA 90402 FlA Tech/Cowley Continued page 82 timers cost $5500 including battery start switch trickle charger extra $3000 Koster Digital PO Box 54 DK-3400 Hillerod Denmark other electric timer made California Ken Bauer units available sell about $3000 no accessories electronics goodies Convenience reliability will surely force major swing over electric timers battery board model other options present themselves competitors Aus tralian WC used miniature buzzers help locate models downwind notably Dutch Japanese teams Australias Yin Morgan used small radio transmiter produced signal could tracked receiver carried retrievers Yin explained gadget symposium held during WC device may illegal some countries ultimate age increasing use thermister lift-detection devices install Gliderwired directly retrieval buzzer Such electronic Nordic would allow flier monitor air being towed through listening Continued page 176 --&%wVvu HELLO SUPER SHRThK April1985 173 BYRONVIDEO TAPE Byron Originals 1/5th Air Force STRIKING BACK exciting WWII Air Battle Reenactment Informative interesting Byron Originals factory tours production techniques eReviews both Jet Rally 84 Fun Fly 84 Enjoy 30 minute video tape comfort home rfect material club programs personal copy send $2000 Byron Originals Box 279 elda Grove Iowa 51445 Ph 712-364-3165 Please specify VHS Beta format PermaGritTM Carbide Sanding Tools STEN CARBIDE -Mans hardest material next diamond. BRAZED TO..made STEELUSA Average ModelersFLAT TOOL 040 X 11/2 X Use ii9 use balsa hard woods e7 fiberglass beaded foams epoxy fillers plexiglass DARE YOU TO TRY IT MONEY BACK GUARANTEE FOR MAIL ORDERS ONLY check M 0 ONLY $6~ No Stamps No COD SEE YOUR DEALER FIRST OR SEND FOR COMPLETE LIST OF S TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayton OH 45429 513 294-1192 loser. adde%T.l ELECTRIC NOEL & SAILPLANE SPECIALISTS 1981 World Soaring Champ DWIGHT HOLLEY IS PROUD TO ANNOUNCE NEW COMPANY TO HELP BOTH BEGINNER & EXPERT FLY INTO THE NEW ERA OF ELECTRIC AIRCRAFT WE ALSO OFFER SELECT FEW PURE SAILPIANES FREE DEMONSTRATION FLIQI-ITS CHECK OUT AND/OR TEST FLIGIEES OF VUR NEW PLANES CALL OR WRITE FOR FREE DESCRIPTIVE FLYER UPS COD FOR IMMEDIATE SHIPMENT ELECTRIC KITS IN STOCK AEROBATIC OLDTIMER SPORT SCALE GLIDERS HOLLEYS SILENT FLIGHT 203 748-0083 151 CHESTNUT RIDGE ROAD BETHEL CT 06801 FEATURING ONLY STATE OF ThE ART ITEMS 1 2 HI 8 C 8 HI FIA Tech/Cowley Continued page 173 rising falling pitch buzzer could heard easily 164 ft below ground marginal conditions extra input information could help confh-m center thermal flier has located electric circle-tow glider Too windy As new World Champion Matt Gewaln pointed out good fliers unable cope high winds Australia conventional circletow models As things turned out simple straight-tow model would have suitable such conditions high wind speed would lift models stralghtto top line once overhead Gliders would enter unwanted circle rudder kicked over Yugoslavian hooks Only Yugoslavian team seemed have complete mastery conditionsusing original Issaenko concept timer-start spring front balances auto-rudder spring back system hook equilibrium fore aft hook pulled forward straight tow stays allows model kite over head Only model flies upwind flier runs back pulling backwards line does hcok swing back initiate circle gives flier much better control Glider because can select exact moment wishes model begin circlingmost important windy weather Sharp-eyed readers will notice tow hook setup doesnt require forward rake pivot point ahead tow ring attachment point would give too stable hook flier might able pull back circle mode Instead Yugoslavian hcok has backward rake basically unstable hook stabilized balanced pull timer-start auto-rudder springs setup worked well Yugoslavs including Mirko Karanovic placed third Paul Lagan WC saw another excep * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH 1085- INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 L SILICONE 10 toot consTUBING ID 062125U S POST S/coil 235 265 3 2554$ co L LARRY DODGE AERO INC 10 MANtdINGSTiLLWATER MN 55082 USA OVERSEAS ORDERS WELCOMED AIRCRAFT PHOTO PACKS Photographs modeller aireratl enthuniant Ken P Kalynuk 12041885-2090 389 Moorgale SI Winnipeg Manitoba Canada R3J2L6 tional performance gentleman now Australian national fourth FiB 1979 third FlA 1981 second FlA 1983quite record Although flew AL-29 Robin contest interesting model new Big Apple named after models inspired design Lee Hines latest Big Max Andres Lepps AL-29 -33 German SPL design own initials PL Paul says new model has 10-15-sec advantage over COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks required change address Attach current MA maIling label check appropriate box mall Subscrip tIon Dept Model AvIation 1810 Samuel Morse Dr Reston VA 22090 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscrIption rates $1800 12 months US possessions elsewhere IncludIng Canada MexIco $2400 US Schools $900 US LibrarIes $1350 NAME ADDRESS CITY/cTATE 710 MODEL AVIATiON 1810 SAMUEL MORSE OR RESTON VA 22090 176 Model Aviation U -i z IL 0 K B 4 a n PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tuilahoma Tenn 37388 SUPER SALE hi ye dee q. d pee edi 484 Thee tqee eet di eethp te leeS Iqe d,d h peI.hel. Okeel k hi .h-I Sn 4 pe heeddt .d . pedeeeetei di, ee hpe$WHS I. 8. UAA Jdi II IcS hee4 55 dI k,l p. d ebeet dll qlee .theOft .hi.$IH95 Mey MS tIll. eeIdh Spdly ETA 9I6l. ed.lq Ceffidieeko y edn eel se ceo VideoTech PO Box 1917-30086 Stone Mt GA 30086 QEYELAND GIANTS ~katNEW FOR GIANT SCALE BUFFS Worlds Largest Gas Plans Assortntent INTERNATIONALLY PAMOUS cD GUALIfE blASTER MODELS PLANS 5i5DiOwoiell 2t $48 I— 78Cono/ Cot PSYSA 542 72Cm 0211t/4 185 54& 04 Ce Cot PRYSA 536 62 Howord See 1k $459 _ gb Neoyleo S4so- 77 soclng B-I 70 Pen $30 02 WWn12t 34 L 536 t03 So 517G Pen $50 7WWwt21 Sd L SAn 65 Doog 0-ll6A 05. 532 54 Pokk D7 Pt $39r t58 Dikor 5-38 Awpb $49 60 Howerd PM Sm $32r 60 So. tOO 5pe $36 Boyle Gao-Be $32 PD Bee toDOport $49r 60 Sopereerin 568 $24 90 StinALow Wing $06 $ Sopnwoin DAB $32 50 Manin 74 TAM-t $59 62 Con Hewk P-AR 545 78 99g 0400 Bonb 542 4 CoHek P6D Pt SS4r 104 H-Pg 5450 Roe 506 62 Eookbaed Vego 524 60 MCbina Cl/ppm $55 74 Doolinlee 0-5 Ii 548 97 MCI/no Cl/ppm 575 Monoooop Sport $36 65 Wet/ Whirlwind $22 Hell Spe BolMog $43 68 Ryeo Non/en$39 07 AerOnce C-S Spt 530 65 5Bonone VTe/l $29 1 Dooglee 0-38 0$ $22 77 Leeewk Sedon $25 22 Single O-38Ob $47 72 N Mitch Sowb $49 4 Peg. Con See $45 60 MMornodnr 826 $49 7t Men/n StO Bennb $29 8t OH Moeqoito 5k $42 Ton. WW See $30 tOO OH IdeqoBonb 805 53 Cm Ooelcb Pt tC2 $42 98 Steer PTt7Koydet 556 94Cc Geehb PttC2 80499 NBlk Widow P61 $69 DeHen Cenren Soc $24 71 Deog DC-2 Tren $32 62 Hne Mn MelIlgen 035 92 Doog DC-S Tren $50 4 M Mclligon $4S 86 Hewbe Teoeo t2 $32 62 5oncg P266 Pt 526105 Con02U1/4 L&S ESA 84 5o/ng P-26A Pt $48 60 Doogle M-2 Mo/I $24 9 Woce C6 Cebin $366s Britel Bolldeg Pt $30 64 Beenk C17B Seog 82$59 SrownSonMLA $04r 94 Beoch C 17-B Steg $49r107 Goon Seeret P$P $04 05 Leck t 1 RIote $3075 Teol Al 6000 824 83 Look 11 EIotre 540107 Mon IdS-t Ron $44 62 St/neon TW DR7 $t69t Lindbere NX2t1 $29 St St/neon T/W SR7 $34108 PerobPTt9 Sr $59 225 non T/W SR7 528 90 Weno teperWing $39r 59 Br tol Pt P2-fl $2070 WestinI Lyende $32 t P2-s 552100 Wetld Lyondn 849 Pt P2-B $40 57 Po4 Trint 4-AT 82$ en e Op. $40 76 Pord 1/not 4A1 $43 XF3P-t $20114 Pord Trio, 4AT $59 osR.AoW rbk P40 $2484 RerIJoyc XPJ-2 $56 tno P28 $2893 conIng C-2Awph $69 RepSeoB Awph 83978 Gnwj2P ISonk $06 S Sep See-Roe Aw $54SR Grow fl-P Dock 829 06 P/pnn J3 Cob $2959 Gothe 0tV Bow $22 98 Look Hodon Bob $38117 Onthe 0-tV 8ow $39 63 Orooc PAF Helkot 02868 BonWiohle B/4 540 90 OH 82 Tioc MotI 559 04 Con Sw/It TP934 028 Sold Tho Otolr oblnnt nhenge 10 *flEK PRICE coolCAnEcOlOItnEe SiLO 01*00 PLOOn, 1200 Other 6 720 Pette IncI SOc Up Add 10% eli odnr hipp/ng & in. etc. o USA Con & Mee Elowheo 15% /25% /1 0/rI P cto el cotolog 5200 linclode Print [intl Proe lit ncto oboe DIOS Ilky em toremgn odd 5100 CLEYELAND MODEL & SUPPLY Co coofto neooni*,6e-s eneIltcolinnn tie 0010 30010 12101 norsoon CLEVELAND OHiO 44182 youre familiar ZAPTM CA know its superfast super-adhesive Yar. also know instances neec rime make final positioning adjustments orfill gap SLO-ZAPTM allows time up 2 minutes get everything just right Its high viscosity maximum gap filling maximum fillet forming slow cure cyanoacrylate* limited time will include 1/3 oz sample Z7TM DEBONDER purchase SLO-ZAPT * Use our ZlP-KlCKElfor immediate cure after obtaining final alignment Pacer Tech 1600 DELL AVENUE CAMPBELL CALIFORNIA 95008 408 379-9701 1 removes cured cyanoacrylates skin wod surfaces etc youre sometimes slower SLOZAPTM Z7TM will give second chance Z7TM DEBONDER odorless will nor craze plastics comes safer water based chemistry know youre going like SLOZAPTM Z7TM DEBONDER wont get stuck Available now leading hobby shops everywhere Regional Waehoosing Sales Offices FRANK TIANO ENTERPRISES 620 RTE 32N NEW PALTZ NY 12561 914 650-9906 House ci Balsa 34 ROSO thers calm air better conditions xpected 1985 WC Yugoslavia iany others may try approach honestly thought Burgos close s Id ever get FlA win said Paul Im still little surprised sult Goulburn Notwithstanding still hudderwhen think flyoff because hould have done lot better Paul says rill unable make trip 1985 Tugoslavia great pity may ave another go 1987 Paul said r now Im enjoying other pastimes Ve hope make Paul Museum/Willoughby Continued page 87 Golden Age Flight Section two fantastic decades1919 1939aviation America truly came age During time world flight profoundly affected number historic aero nautical milestones Noteworthy barnstomers flew World War surplus aircraft outlying areas intro luced general public airplane basic Jenny entranced inspired countless thousands hrill flying Fly 15 minutes pitch experience nwittingly influenced public acceptance f air travel soon become reality Establishment Air Mail Ser vice added further momentum publics acceptance airplane during era aircraft factories started San Diego two famousConsolidated now General Dynamics Ryanbegan building test-flying airplanes founders both firms representative aircraft have place honor museum display Ryans M-1 Brougham ST Consolidateds PT-l Trusty Fleet 2 Other Golden Age airplanes Cur tiss B-i Robin Aeronca C-3 American Eagle A-I Morane Saulnier MS230 Gee Bee Model Z Rearwin Cloudstar Waterman Aerobile World War II Germany invaded Poland 1939 aviation-minded people turned thoughts energies application then-present aircraft meet requirements ever-widen ing war expanded designed new aircraft Represented display period time Ryan PT-22 Stearman N25-3 7A0th-scale Junkers Ju-87 dive bomber Supermarine Spitfire XVI Grumman F6F Hellcat Grum man J2F Duck Postwar civil aviation aircraft displayed Smith DSA-1 Miniplane Jungster VI Pitts Special Wee Bee Mercury Air Shoe String single sailplane Glasfluegel Libelle Jet Age Germany first Great Britain Japan United States developed flown operationally-capable jet fighters before Axis powers defeated surge jet air travel initially began British Comet Passenger service between London South Africa May 1952 set pace rest world An Air Force contract determine feasibility vertical takeoff landing generated Ryan X-13 Verti-Jet flown off steps Pentagon final demonstration before being placed Air Museum two built other jet fighter very durable Douglas A-4 Skyhawk termed smallest jet used aboard US Navys aircraft carriers supposedly capable atomic weapons delivery Man Space Section contains mock-up Space Shuttle cockpit uniformed mannequins con trols rock moon encased plastic However museum officials stress space travel section complete likelihood will con tinue expand long manned/un manned space travel exists Women Aviation Amelia Earharts likeness story life uniforms military women occupy area other women feats extolled will greatly add viewer s knowledge vital part women played aviation Model Section Under glass models top-notch museum quality composite visual picture aviation April1985 177
Edition: Model Aviation - 1985/04
Page Numbers: 80, 81, 82, 173, 176, 177
FiA Technicalities big report World Championships such author has done us before never seems give enough room tell about innovations techniques seen Thats again looking 1983 Free Flight World Championshipsthis month especially A-2 Glider event FlA EMartyn Cowley THE CURRENT FlA GLIDER World Champion Matt Gewain sec ond American win title since Nordic event became WC way back 1946 first late Gerry Ritz 1959 Matt has leading Free Flighter Florida now living three 1983 team members came same state Like other two Florida fliers Matts models feature much use carbon-fiber reinforcement material has become very desirable reinforcing wings make strong lightweight struc tures able withstand enormous loads imposed during zoom launches Pre-cured carbon-fiber easiest form modelers use now available mail order Matts team mate Jim Bradley 1337 Pine Sap Rd Orlando FL 32817 Twinn-K dis Note hook pivot behind Atomring giving backward er line spring roAookad1ust hook position Tow ring front model CG Mom towheePenont signols latch opens timer starts Notw pivoting towhook balanced redder spring timer start spring ok will now stay position / flier chooses during tow / Timer stert ossembly tormord spr ng 80 Model Aviation SECTION A-A 25 A105 tributor model shops sheets uni-directional pre-cured fibers 008 010 thick can easily stripped small widths suitable capping spars Thick cyanoacrylate glues work best slow-cure epoxy Matt used Dremel Moto Tool router attachment inset carbon-fiber strips wing trailing edge models well reinDownward pci1 hook releases timer start arm Ie 14-C-1412 it~J L timerGuid 7VLJ 0506 light allay Eaceplate Switch loses timer Ten p ng sa fu Arm moves start timer vane Tension spring balances rudder spring give hook equilibrium DETAIL mm w C odeed n2mmod tube World Champion Matt Gewainstow hook installation Note Horejal-style rudderdelay slider toward rear tow hook plate controls zoom launch Spring iong wire reicased timer Gewains winning Pacer will featured future issue MA Yugoslavian hook-operated Seelig timer stan used Mirko Karamovic shown photo two drawings upper drawing concentrates tow hook right features timer start mechanism Illustrations courtesy ofAcro Modeller forcing leading edge center sheet ing Matt says earlier Pacer models de veloped spanwise shear cracks center panel sheeting until incorporated car bon-fiber shear web consists two layers glued 450 other under balsa sheet main spar massive x ce member tapering 3/16 x 1/16 dihedral breaks save weight Matts models have large-diam eter steel wing joiner rod trailing edge wing half being taped wing mount fuselage allows side adjusted incidence indepen dently perfecting zoom launch tran sition glide describes trimming technique thusly shim under wing trailing edge 1/64 ply vary rudder delay get lateral trim models use Ivan Herejsis style timer-delay rudder set can hear click just before model rolls out zoom glide overhead change center gravity CG position moving nose weight change pitch trim during zoomfor ward get model pitch up higher improve stall recovery back get flatter less loopy zoom Matt continues would like com mend Australians put together fine World Championships thank US team members supporters essential part success significant problem kept breaking tail boom windyweather model dethermalized land ings windy practice days So fly best thermal model trimmed calm-to-moderate winds through whole WC Consequently through windy rounds picked thermals ground verified lift two circles line before release flown windy-weather mod el has less performance may have missed maxes 7th 8th rounds liftwas very weak ability fly tactically other models may have made possible locate stronger lift thing sure circle towing high winds gave competitor chances get trouble drop flight outstanding Glider fliers dropped max because wind Towline style Towing F lA Glider using line minus winch becoming universal style fliers prefer pull line hand over hand running quick-and-easy method controling towline bother using winchwhich can produce troublesome tangles reeling out real advantage towing winch comes moment releasing model Accelerating Glider towards top tow zoom release climbing turn gain additional height has long favorite tactic Without winch flier releases end towline greater launch height can achieved flier no longer needs grab wasted handful slack line prior release order make model come off line Another benefit comes flier gets difficulty towing using line can release end prevent line tangling flier ever releases winch penalized zero score under no throwing winch rule surprising Australian FF WC however see fliers showed poor towline style accelerate models overhead chose haul handsful line speed up Gliders instead positioning models firstto accelerated fast sprint wasted yards towline negated zoom VIT nrnet give Stondord KSB2 recoed deloyAm type 4 Tinrer mith tripped towbook extended remote C \ Thin wire Start Oe/off stort ore odded switch detoil Toilpione troiling edge roised daring tow Corbon fibre tail boom Pivot Spring launch advantage models otherwise might have achieved Chinese example showed good form running end line held high arms length justbefore releasing towline would place end line 6-7 ft above ground sinking speed F 1 Glider about 1 ft/sec good zoom 15 20 ft translates maybe 15 20 seconds being gained Also fair assume line will have stretched extra 10-15 ft under higher tension launch 2kg pull used check length line originally easy see thus good towline style releasing model can pay off significantly higher flight time irrespective individuals model Timer start setups What releasable towline requires towhook-to-model April 1985 81 two photos drawing show simple timer start mechanism used Chi nese modeis activate KSB-type timers Notches timer disk extra function arm operate positive VIT per drawing lower right model being circie-towed setup allows line fall away freely hanging up achieved big problem area becomes start dethermalizer timer old pin-and-line system just wont work because flier having let go end line can no longer tug pull pin Most fliers using latch-type towhook now have some type timer-start mechanism operated until tension towline just before zoom opens latch Another problem arises especially flying windy conditions such experi enced Australia What happens gust wind unexpectedly unlatches tow hook Simply put dethermalizer timer will started will probably set close 3-mm max flier almost compelled release immediately whether wants to prevent dethermal izing short 3 mm Electric timers new electric timers provide solution problems also add risk model flyaway should flier release line starting timer towline cut during line-crossing another flier Electric timers set up run-down continually during tow time flier pulls towline however microswitch resets clock full 3mm way doesnt matter hook gets unlatched gust because further pulls towline will still reset timer least flier has option continue towing although straight increase chances still making good score lift Two excellent electronic timers available F 1 Gliders Thomas Koster top FAI flier Thomas Continued page 173 82 Model Aviation Japanese loudest A-2s field used miniature electric buzzers see battery hatch Note cover on/off timer switch keep out dirt Nice detailing Tall surfaces Mirko Karamovics model feature neat slotted stabilizer rear ward fin Photo credit Martyn Cowley Jim Bradleys excellent circle tow hookavailable mail orderfrom address thetext complete wires timer start auto rudder adjustable tow hook plate nturIIng model Paul Sunr irinmung usus numemage carbon-fiber tubes plus carbonfiber rib cap strips Fishing line 3mm invigorators span ribs underneath covering viii after reading fine iooks new work contains obscure utogyros CO-2 power traveling riodels some great Fairchild 22 threejews data number simple cale models some profiles go long present profile scale craze end $895 plus buck postage few ents governor live alifornia first kid block o have three Bills nifty books vfodel month month alute Jack McCracken museum uahty FF Scale Gloster IV-A won last Flightmasters ROW Lake Elsi tore CA Built Aeromodeller hree-view l-in/ft Jacks model spans ust short 27 weighs 10% oz F3owered enclosed DC Dart diesel 035 displacement plane no trou le getting off water Gloster sheeted back cockpit has sheet d floats A2 rest being stickmd-tissue finished Aero Gloss dope anall water rudder added right float straighten out takeoff run md ship realistically rose sur race climbed out gentle lefthand attern minute later power ut transition LH glide erfect landing picture-postaid quality model just little ight down thrust engine lew neutral control surface adjust nents knock-off wings floats yere held place rubberbands lue outstanding flight characteris ics Gloster never got tested Well gang until meet back wo months help Junior think safety md never play leap-frog unicorn Bill Warner 423-C San Vicente Blvd santa Monica CA 90402 FlA Tech/Cowley Continued page 82 timers cost $5500 including battery start switch trickle charger extra $3000 Koster Digital PO Box 54 DK-3400 Hillerod Denmark other electric timer made California Ken Bauer units available sell about $3000 no accessories electronics goodies Convenience reliability will surely force major swing over electric timers battery board model other options present themselves competitors Aus tralian WC used miniature buzzers help locate models downwind notably Dutch Japanese teams Australias Yin Morgan used small radio transmiter produced signal could tracked receiver carried retrievers Yin explained gadget symposium held during WC device may illegal some countries ultimate age increasing use thermister lift-detection devices install Gliderwired directly retrieval buzzer Such electronic Nordic would allow flier monitor air being towed through listening Continued page 176 --&%wVvu HELLO SUPER SHRThK April1985 173 BYRONVIDEO TAPE Byron Originals 1/5th Air Force STRIKING BACK exciting WWII Air Battle Reenactment Informative interesting Byron Originals factory tours production techniques eReviews both Jet Rally 84 Fun Fly 84 Enjoy 30 minute video tape comfort home rfect material club programs personal copy send $2000 Byron Originals Box 279 elda Grove Iowa 51445 Ph 712-364-3165 Please specify VHS Beta format PermaGritTM Carbide Sanding Tools STEN CARBIDE -Mans hardest material next diamond. BRAZED TO..made STEELUSA Average ModelersFLAT TOOL 040 X 11/2 X Use ii9 use balsa hard woods e7 fiberglass beaded foams epoxy fillers plexiglass DARE YOU TO TRY IT MONEY BACK GUARANTEE FOR MAIL ORDERS ONLY check M 0 ONLY $6~ No Stamps No COD SEE YOUR DEALER FIRST OR SEND FOR COMPLETE LIST OF S TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayton OH 45429 513 294-1192 loser. adde%T.l ELECTRIC NOEL & SAILPLANE SPECIALISTS 1981 World Soaring Champ DWIGHT HOLLEY IS PROUD TO ANNOUNCE NEW COMPANY TO HELP BOTH BEGINNER & EXPERT FLY INTO THE NEW ERA OF ELECTRIC AIRCRAFT WE ALSO OFFER SELECT FEW PURE SAILPIANES FREE DEMONSTRATION FLIQI-ITS CHECK OUT AND/OR TEST FLIGIEES OF VUR NEW PLANES CALL OR WRITE FOR FREE DESCRIPTIVE FLYER UPS COD FOR IMMEDIATE SHIPMENT ELECTRIC KITS IN STOCK AEROBATIC OLDTIMER SPORT SCALE GLIDERS HOLLEYS SILENT FLIGHT 203 748-0083 151 CHESTNUT RIDGE ROAD BETHEL CT 06801 FEATURING ONLY STATE OF ThE ART ITEMS 1 2 HI 8 C 8 HI FIA Tech/Cowley Continued page 173 rising falling pitch buzzer could heard easily 164 ft below ground marginal conditions extra input information could help confh-m center thermal flier has located electric circle-tow glider Too windy As new World Champion Matt Gewaln pointed out good fliers unable cope high winds Australia conventional circletow models As things turned out simple straight-tow model would have suitable such conditions high wind speed would lift models stralghtto top line once overhead Gliders would enter unwanted circle rudder kicked over Yugoslavian hooks Only Yugoslavian team seemed have complete mastery conditionsusing original Issaenko concept timer-start spring front balances auto-rudder spring back system hook equilibrium fore aft hook pulled forward straight tow stays allows model kite over head Only model flies upwind flier runs back pulling backwards line does hcok swing back initiate circle gives flier much better control Glider because can select exact moment wishes model begin circlingmost important windy weather Sharp-eyed readers will notice tow hook setup doesnt require forward rake pivot point ahead tow ring attachment point would give too stable hook flier might able pull back circle mode Instead Yugoslavian hcok has backward rake basically unstable hook stabilized balanced pull timer-start auto-rudder springs setup worked well Yugoslavs including Mirko Karanovic placed third Paul Lagan WC saw another excep * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH 1085- INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 L SILICONE 10 toot consTUBING ID 062125U S POST S/coil 235 265 3 2554$ co L LARRY DODGE AERO INC 10 MANtdINGSTiLLWATER MN 55082 USA OVERSEAS ORDERS WELCOMED AIRCRAFT PHOTO PACKS Photographs modeller aireratl enthuniant Ken P Kalynuk 12041885-2090 389 Moorgale SI Winnipeg Manitoba Canada R3J2L6 tional performance gentleman now Australian national fourth FiB 1979 third FlA 1981 second FlA 1983quite record Although flew AL-29 Robin contest interesting model new Big Apple named after models inspired design Lee Hines latest Big Max Andres Lepps AL-29 -33 German SPL design own initials PL Paul says new model has 10-15-sec advantage over COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks required change address Attach current MA maIling label check appropriate box mall Subscrip tIon Dept Model AvIation 1810 Samuel Morse Dr Reston VA 22090 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscrIption rates $1800 12 months US possessions elsewhere IncludIng Canada MexIco $2400 US Schools $900 US LibrarIes $1350 NAME ADDRESS CITY/cTATE 710 MODEL AVIATiON 1810 SAMUEL MORSE OR RESTON VA 22090 176 Model Aviation U -i z IL 0 K B 4 a n PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tuilahoma Tenn 37388 SUPER SALE hi ye dee q. d pee edi 484 Thee tqee eet di eethp te leeS Iqe d,d h peI.hel. Okeel k hi .h-I Sn 4 pe heeddt .d . pedeeeetei di, ee hpe$WHS I. 8. UAA Jdi II IcS hee4 55 dI k,l p. d ebeet dll qlee .theOft .hi.$IH95 Mey MS tIll. eeIdh Spdly ETA 9I6l. ed.lq Ceffidieeko y edn eel se ceo VideoTech PO Box 1917-30086 Stone Mt GA 30086 QEYELAND GIANTS ~katNEW FOR GIANT SCALE BUFFS Worlds Largest Gas Plans Assortntent INTERNATIONALLY PAMOUS cD GUALIfE blASTER MODELS PLANS 5i5DiOwoiell 2t $48 I— 78Cono/ Cot PSYSA 542 72Cm 0211t/4 185 54& 04 Ce Cot PRYSA 536 62 Howord See 1k $459 _ gb Neoyleo S4so- 77 soclng B-I 70 Pen $30 02 WWn12t 34 L 536 t03 So 517G Pen $50 7WWwt21 Sd L SAn 65 Doog 0-ll6A 05. 532 54 Pokk D7 Pt $39r t58 Dikor 5-38 Awpb $49 60 Howerd PM Sm $32r 60 So. tOO 5pe $36 Boyle Gao-Be $32 PD Bee toDOport $49r 60 Sopereerin 568 $24 90 StinALow Wing $06 $ Sopnwoin DAB $32 50 Manin 74 TAM-t $59 62 Con Hewk P-AR 545 78 99g 0400 Bonb 542 4 CoHek P6D Pt SS4r 104 H-Pg 5450 Roe 506 62 Eookbaed Vego 524 60 MCbina Cl/ppm $55 74 Doolinlee 0-5 Ii 548 97 MCI/no Cl/ppm 575 Monoooop Sport $36 65 Wet/ Whirlwind $22 Hell Spe BolMog $43 68 Ryeo Non/en$39 07 AerOnce C-S Spt 530 65 5Bonone VTe/l $29 1 Dooglee 0-38 0$ $22 77 Leeewk Sedon $25 22 Single O-38Ob $47 72 N Mitch Sowb $49 4 Peg. Con See $45 60 MMornodnr 826 $49 7t Men/n StO Bennb $29 8t OH Moeqoito 5k $42 Ton. WW See $30 tOO OH IdeqoBonb 805 53 Cm Ooelcb Pt tC2 $42 98 Steer PTt7Koydet 556 94Cc Geehb PttC2 80499 NBlk Widow P61 $69 DeHen Cenren Soc $24 71 Deog DC-2 Tren $32 62 Hne Mn MelIlgen 035 92 Doog DC-S Tren $50 4 M Mclligon $4S 86 Hewbe Teoeo t2 $32 62 5oncg P266 Pt 526105 Con02U1/4 L&S ESA 84 5o/ng P-26A Pt $48 60 Doogle M-2 Mo/I $24 9 Woce C6 Cebin $366s Britel Bolldeg Pt $30 64 Beenk C17B Seog 82$59 SrownSonMLA $04r 94 Beoch C 17-B Steg $49r107 Goon Seeret P$P $04 05 Leck t 1 RIote $3075 Teol Al 6000 824 83 Look 11 EIotre 540107 Mon IdS-t Ron $44 62 St/neon TW DR7 $t69t Lindbere NX2t1 $29 St St/neon T/W SR7 $34108 PerobPTt9 Sr $59 225 non T/W SR7 528 90 Weno teperWing $39r 59 Br tol Pt P2-fl $2070 WestinI Lyende $32 t P2-s 552100 Wetld Lyondn 849 Pt P2-B $40 57 Po4 Trint 4-AT 82$ en e Op. $40 76 Pord 1/not 4A1 $43 XF3P-t $20114 Pord Trio, 4AT $59 osR.AoW rbk P40 $2484 RerIJoyc XPJ-2 $56 tno P28 $2893 conIng C-2Awph $69 RepSeoB Awph 83978 Gnwj2P ISonk $06 S Sep See-Roe Aw $54SR Grow fl-P Dock 829 06 P/pnn J3 Cob $2959 Gothe 0tV Bow $22 98 Look Hodon Bob $38117 Onthe 0-tV 8ow $39 63 Orooc PAF Helkot 02868 BonWiohle B/4 540 90 OH 82 Tioc MotI 559 04 Con Sw/It TP934 028 Sold Tho Otolr oblnnt nhenge 10 *flEK PRICE coolCAnEcOlOItnEe SiLO 01*00 PLOOn, 1200 Other 6 720 Pette IncI SOc Up Add 10% eli odnr hipp/ng & in. etc. o USA Con & Mee Elowheo 15% /25% /1 0/rI P cto el cotolog 5200 linclode Print [intl Proe lit ncto oboe DIOS Ilky em toremgn odd 5100 CLEYELAND MODEL & SUPPLY Co coofto neooni*,6e-s eneIltcolinnn tie 0010 30010 12101 norsoon CLEVELAND OHiO 44182 youre familiar ZAPTM CA know its superfast super-adhesive Yar. also know instances neec rime make final positioning adjustments orfill gap SLO-ZAPTM allows time up 2 minutes get everything just right Its high viscosity maximum gap filling maximum fillet forming slow cure cyanoacrylate* limited time will include 1/3 oz sample Z7TM DEBONDER purchase SLO-ZAPT * Use our ZlP-KlCKElfor immediate cure after obtaining final alignment Pacer Tech 1600 DELL AVENUE CAMPBELL CALIFORNIA 95008 408 379-9701 1 removes cured cyanoacrylates skin wod surfaces etc youre sometimes slower SLOZAPTM Z7TM will give second chance Z7TM DEBONDER odorless will nor craze plastics comes safer water based chemistry know youre going like SLOZAPTM Z7TM DEBONDER wont get stuck Available now leading hobby shops everywhere Regional Waehoosing Sales Offices FRANK TIANO ENTERPRISES 620 RTE 32N NEW PALTZ NY 12561 914 650-9906 House ci Balsa 34 ROSO thers calm air better conditions xpected 1985 WC Yugoslavia iany others may try approach honestly thought Burgos close s Id ever get FlA win said Paul Im still little surprised sult Goulburn Notwithstanding still hudderwhen think flyoff because hould have done lot better Paul says rill unable make trip 1985 Tugoslavia great pity may ave another go 1987 Paul said r now Im enjoying other pastimes Ve hope make Paul Museum/Willoughby Continued page 87 Golden Age Flight Section two fantastic decades1919 1939aviation America truly came age During time world flight profoundly affected number historic aero nautical milestones Noteworthy barnstomers flew World War surplus aircraft outlying areas intro luced general public airplane basic Jenny entranced inspired countless thousands hrill flying Fly 15 minutes pitch experience nwittingly influenced public acceptance f air travel soon become reality Establishment Air Mail Ser vice added further momentum publics acceptance airplane during era aircraft factories started San Diego two famousConsolidated now General Dynamics Ryanbegan building test-flying airplanes founders both firms representative aircraft have place honor museum display Ryans M-1 Brougham ST Consolidateds PT-l Trusty Fleet 2 Other Golden Age airplanes Cur tiss B-i Robin Aeronca C-3 American Eagle A-I Morane Saulnier MS230 Gee Bee Model Z Rearwin Cloudstar Waterman Aerobile World War II Germany invaded Poland 1939 aviation-minded people turned thoughts energies application then-present aircraft meet requirements ever-widen ing war expanded designed new aircraft Represented display period time Ryan PT-22 Stearman N25-3 7A0th-scale Junkers Ju-87 dive bomber Supermarine Spitfire XVI Grumman F6F Hellcat Grum man J2F Duck Postwar civil aviation aircraft displayed Smith DSA-1 Miniplane Jungster VI Pitts Special Wee Bee Mercury Air Shoe String single sailplane Glasfluegel Libelle Jet Age Germany first Great Britain Japan United States developed flown operationally-capable jet fighters before Axis powers defeated surge jet air travel initially began British Comet Passenger service between London South Africa May 1952 set pace rest world An Air Force contract determine feasibility vertical takeoff landing generated Ryan X-13 Verti-Jet flown off steps Pentagon final demonstration before being placed Air Museum two built other jet fighter very durable Douglas A-4 Skyhawk termed smallest jet used aboard US Navys aircraft carriers supposedly capable atomic weapons delivery Man Space Section contains mock-up Space Shuttle cockpit uniformed mannequins con trols rock moon encased plastic However museum officials stress space travel section complete likelihood will con tinue expand long manned/un manned space travel exists Women Aviation Amelia Earharts likeness story life uniforms military women occupy area other women feats extolled will greatly add viewer s knowledge vital part women played aviation Model Section Under glass models top-notch museum quality composite visual picture aviation April1985 177
Edition: Model Aviation - 1985/04
Page Numbers: 80, 81, 82, 173, 176, 177
FiA Technicalities big report World Championships such author has done us before never seems give enough room tell about innovations techniques seen Thats again looking 1983 Free Flight World Championshipsthis month especially A-2 Glider event FlA EMartyn Cowley THE CURRENT FlA GLIDER World Champion Matt Gewain sec ond American win title since Nordic event became WC way back 1946 first late Gerry Ritz 1959 Matt has leading Free Flighter Florida now living three 1983 team members came same state Like other two Florida fliers Matts models feature much use carbon-fiber reinforcement material has become very desirable reinforcing wings make strong lightweight struc tures able withstand enormous loads imposed during zoom launches Pre-cured carbon-fiber easiest form modelers use now available mail order Matts team mate Jim Bradley 1337 Pine Sap Rd Orlando FL 32817 Twinn-K dis Note hook pivot behind Atomring giving backward er line spring roAookad1ust hook position Tow ring front model CG Mom towheePenont signols latch opens timer starts Notw pivoting towhook balanced redder spring timer start spring ok will now stay position / flier chooses during tow / Timer stert ossembly tormord spr ng 80 Model Aviation SECTION A-A 25 A105 tributor model shops sheets uni-directional pre-cured fibers 008 010 thick can easily stripped small widths suitable capping spars Thick cyanoacrylate glues work best slow-cure epoxy Matt used Dremel Moto Tool router attachment inset carbon-fiber strips wing trailing edge models well reinDownward pci1 hook releases timer start arm Ie 14-C-1412 it~J L timerGuid 7VLJ 0506 light allay Eaceplate Switch loses timer Ten p ng sa fu Arm moves start timer vane Tension spring balances rudder spring give hook equilibrium DETAIL mm w C odeed n2mmod tube World Champion Matt Gewainstow hook installation Note Horejal-style rudderdelay slider toward rear tow hook plate controls zoom launch Spring iong wire reicased timer Gewains winning Pacer will featured future issue MA Yugoslavian hook-operated Seelig timer stan used Mirko Karamovic shown photo two drawings upper drawing concentrates tow hook right features timer start mechanism Illustrations courtesy ofAcro Modeller forcing leading edge center sheet ing Matt says earlier Pacer models de veloped spanwise shear cracks center panel sheeting until incorporated car bon-fiber shear web consists two layers glued 450 other under balsa sheet main spar massive x ce member tapering 3/16 x 1/16 dihedral breaks save weight Matts models have large-diam eter steel wing joiner rod trailing edge wing half being taped wing mount fuselage allows side adjusted incidence indepen dently perfecting zoom launch tran sition glide describes trimming technique thusly shim under wing trailing edge 1/64 ply vary rudder delay get lateral trim models use Ivan Herejsis style timer-delay rudder set can hear click just before model rolls out zoom glide overhead change center gravity CG position moving nose weight change pitch trim during zoomfor ward get model pitch up higher improve stall recovery back get flatter less loopy zoom Matt continues would like com mend Australians put together fine World Championships thank US team members supporters essential part success significant problem kept breaking tail boom windyweather model dethermalized land ings windy practice days So fly best thermal model trimmed calm-to-moderate winds through whole WC Consequently through windy rounds picked thermals ground verified lift two circles line before release flown windy-weather mod el has less performance may have missed maxes 7th 8th rounds liftwas very weak ability fly tactically other models may have made possible locate stronger lift thing sure circle towing high winds gave competitor chances get trouble drop flight outstanding Glider fliers dropped max because wind Towline style Towing F lA Glider using line minus winch becoming universal style fliers prefer pull line hand over hand running quick-and-easy method controling towline bother using winchwhich can produce troublesome tangles reeling out real advantage towing winch comes moment releasing model Accelerating Glider towards top tow zoom release climbing turn gain additional height has long favorite tactic Without winch flier releases end towline greater launch height can achieved flier no longer needs grab wasted handful slack line prior release order make model come off line Another benefit comes flier gets difficulty towing using line can release end prevent line tangling flier ever releases winch penalized zero score under no throwing winch rule surprising Australian FF WC however see fliers showed poor towline style accelerate models overhead chose haul handsful line speed up Gliders instead positioning models firstto accelerated fast sprint wasted yards towline negated zoom VIT nrnet give Stondord KSB2 recoed deloyAm type 4 Tinrer mith tripped towbook extended remote C \ Thin wire Start Oe/off stort ore odded switch detoil Toilpione troiling edge roised daring tow Corbon fibre tail boom Pivot Spring launch advantage models otherwise might have achieved Chinese example showed good form running end line held high arms length justbefore releasing towline would place end line 6-7 ft above ground sinking speed F 1 Glider about 1 ft/sec good zoom 15 20 ft translates maybe 15 20 seconds being gained Also fair assume line will have stretched extra 10-15 ft under higher tension launch 2kg pull used check length line originally easy see thus good towline style releasing model can pay off significantly higher flight time irrespective individuals model Timer start setups What releasable towline requires towhook-to-model April 1985 81 two photos drawing show simple timer start mechanism used Chi nese modeis activate KSB-type timers Notches timer disk extra function arm operate positive VIT per drawing lower right model being circie-towed setup allows line fall away freely hanging up achieved big problem area becomes start dethermalizer timer old pin-and-line system just wont work because flier having let go end line can no longer tug pull pin Most fliers using latch-type towhook now have some type timer-start mechanism operated until tension towline just before zoom opens latch Another problem arises especially flying windy conditions such experi enced Australia What happens gust wind unexpectedly unlatches tow hook Simply put dethermalizer timer will started will probably set close 3-mm max flier almost compelled release immediately whether wants to prevent dethermal izing short 3 mm Electric timers new electric timers provide solution problems also add risk model flyaway should flier release line starting timer towline cut during line-crossing another flier Electric timers set up run-down continually during tow time flier pulls towline however microswitch resets clock full 3mm way doesnt matter hook gets unlatched gust because further pulls towline will still reset timer least flier has option continue towing although straight increase chances still making good score lift Two excellent electronic timers available F 1 Gliders Thomas Koster top FAI flier Thomas Continued page 173 82 Model Aviation Japanese loudest A-2s field used miniature electric buzzers see battery hatch Note cover on/off timer switch keep out dirt Nice detailing Tall surfaces Mirko Karamovics model feature neat slotted stabilizer rear ward fin Photo credit Martyn Cowley Jim Bradleys excellent circle tow hookavailable mail orderfrom address thetext complete wires timer start auto rudder adjustable tow hook plate nturIIng model Paul Sunr irinmung usus numemage carbon-fiber tubes plus carbonfiber rib cap strips Fishing line 3mm invigorators span ribs underneath covering viii after reading fine iooks new work contains obscure utogyros CO-2 power traveling riodels some great Fairchild 22 threejews data number simple cale models some profiles go long present profile scale craze end $895 plus buck postage few ents governor live alifornia first kid block o have three Bills nifty books vfodel month month alute Jack McCracken museum uahty FF Scale Gloster IV-A won last Flightmasters ROW Lake Elsi tore CA Built Aeromodeller hree-view l-in/ft Jacks model spans ust short 27 weighs 10% oz F3owered enclosed DC Dart diesel 035 displacement plane no trou le getting off water Gloster sheeted back cockpit has sheet d floats A2 rest being stickmd-tissue finished Aero Gloss dope anall water rudder added right float straighten out takeoff run md ship realistically rose sur race climbed out gentle lefthand attern minute later power ut transition LH glide erfect landing picture-postaid quality model just little ight down thrust engine lew neutral control surface adjust nents knock-off wings floats yere held place rubberbands lue outstanding flight characteris ics Gloster never got tested Well gang until meet back wo months help Junior think safety md never play leap-frog unicorn Bill Warner 423-C San Vicente Blvd santa Monica CA 90402 FlA Tech/Cowley Continued page 82 timers cost $5500 including battery start switch trickle charger extra $3000 Koster Digital PO Box 54 DK-3400 Hillerod Denmark other electric timer made California Ken Bauer units available sell about $3000 no accessories electronics goodies Convenience reliability will surely force major swing over electric timers battery board model other options present themselves competitors Aus tralian WC used miniature buzzers help locate models downwind notably Dutch Japanese teams Australias Yin Morgan used small radio transmiter produced signal could tracked receiver carried retrievers Yin explained gadget symposium held during WC device may illegal some countries ultimate age increasing use thermister lift-detection devices install Gliderwired directly retrieval buzzer Such electronic Nordic would allow flier monitor air being towed through listening Continued page 176 --&%wVvu HELLO SUPER SHRThK April1985 173 BYRONVIDEO TAPE Byron Originals 1/5th Air Force STRIKING BACK exciting WWII Air Battle Reenactment Informative interesting Byron Originals factory tours production techniques eReviews both Jet Rally 84 Fun Fly 84 Enjoy 30 minute video tape comfort home rfect material club programs personal copy send $2000 Byron Originals Box 279 elda Grove Iowa 51445 Ph 712-364-3165 Please specify VHS Beta format PermaGritTM Carbide Sanding Tools STEN CARBIDE -Mans hardest material next diamond. BRAZED TO..made STEELUSA Average ModelersFLAT TOOL 040 X 11/2 X Use ii9 use balsa hard woods e7 fiberglass beaded foams epoxy fillers plexiglass DARE YOU TO TRY IT MONEY BACK GUARANTEE FOR MAIL ORDERS ONLY check M 0 ONLY $6~ No Stamps No COD SEE YOUR DEALER FIRST OR SEND FOR COMPLETE LIST OF S TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayton OH 45429 513 294-1192 loser. adde%T.l ELECTRIC NOEL & SAILPLANE SPECIALISTS 1981 World Soaring Champ DWIGHT HOLLEY IS PROUD TO ANNOUNCE NEW COMPANY TO HELP BOTH BEGINNER & EXPERT FLY INTO THE NEW ERA OF ELECTRIC AIRCRAFT WE ALSO OFFER SELECT FEW PURE SAILPIANES FREE DEMONSTRATION FLIQI-ITS CHECK OUT AND/OR TEST FLIGIEES OF VUR NEW PLANES CALL OR WRITE FOR FREE DESCRIPTIVE FLYER UPS COD FOR IMMEDIATE SHIPMENT ELECTRIC KITS IN STOCK AEROBATIC OLDTIMER SPORT SCALE GLIDERS HOLLEYS SILENT FLIGHT 203 748-0083 151 CHESTNUT RIDGE ROAD BETHEL CT 06801 FEATURING ONLY STATE OF ThE ART ITEMS 1 2 HI 8 C 8 HI FIA Tech/Cowley Continued page 173 rising falling pitch buzzer could heard easily 164 ft below ground marginal conditions extra input information could help confh-m center thermal flier has located electric circle-tow glider Too windy As new World Champion Matt Gewaln pointed out good fliers unable cope high winds Australia conventional circletow models As things turned out simple straight-tow model would have suitable such conditions high wind speed would lift models stralghtto top line once overhead Gliders would enter unwanted circle rudder kicked over Yugoslavian hooks Only Yugoslavian team seemed have complete mastery conditionsusing original Issaenko concept timer-start spring front balances auto-rudder spring back system hook equilibrium fore aft hook pulled forward straight tow stays allows model kite over head Only model flies upwind flier runs back pulling backwards line does hcok swing back initiate circle gives flier much better control Glider because can select exact moment wishes model begin circlingmost important windy weather Sharp-eyed readers will notice tow hook setup doesnt require forward rake pivot point ahead tow ring attachment point would give too stable hook flier might able pull back circle mode Instead Yugoslavian hcok has backward rake basically unstable hook stabilized balanced pull timer-start auto-rudder springs setup worked well Yugoslavs including Mirko Karanovic placed third Paul Lagan WC saw another excep * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH 1085- INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 L SILICONE 10 toot consTUBING ID 062125U S POST S/coil 235 265 3 2554$ co L LARRY DODGE AERO INC 10 MANtdINGSTiLLWATER MN 55082 USA OVERSEAS ORDERS WELCOMED AIRCRAFT PHOTO PACKS Photographs modeller aireratl enthuniant Ken P Kalynuk 12041885-2090 389 Moorgale SI Winnipeg Manitoba Canada R3J2L6 tional performance gentleman now Australian national fourth FiB 1979 third FlA 1981 second FlA 1983quite record Although flew AL-29 Robin contest interesting model new Big Apple named after models inspired design Lee Hines latest Big Max Andres Lepps AL-29 -33 German SPL design own initials PL Paul says new model has 10-15-sec advantage over COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks required change address Attach current MA maIling label check appropriate box mall Subscrip tIon Dept Model AvIation 1810 Samuel Morse Dr Reston VA 22090 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscrIption rates $1800 12 months US possessions elsewhere IncludIng Canada MexIco $2400 US Schools $900 US LibrarIes $1350 NAME ADDRESS CITY/cTATE 710 MODEL AVIATiON 1810 SAMUEL MORSE OR RESTON VA 22090 176 Model Aviation U -i z IL 0 K B 4 a n PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tuilahoma Tenn 37388 SUPER SALE hi ye dee q. d pee edi 484 Thee tqee eet di eethp te leeS Iqe d,d h peI.hel. Okeel k hi .h-I Sn 4 pe heeddt .d . pedeeeetei di, ee hpe$WHS I. 8. UAA Jdi II IcS hee4 55 dI k,l p. d ebeet dll qlee .theOft .hi.$IH95 Mey MS tIll. eeIdh Spdly ETA 9I6l. ed.lq Ceffidieeko y edn eel se ceo VideoTech PO Box 1917-30086 Stone Mt GA 30086 QEYELAND GIANTS ~katNEW FOR GIANT SCALE BUFFS Worlds Largest Gas Plans Assortntent INTERNATIONALLY PAMOUS cD GUALIfE blASTER MODELS PLANS 5i5DiOwoiell 2t $48 I— 78Cono/ Cot PSYSA 542 72Cm 0211t/4 185 54& 04 Ce Cot PRYSA 536 62 Howord See 1k $459 _ gb Neoyleo S4so- 77 soclng B-I 70 Pen $30 02 WWn12t 34 L 536 t03 So 517G Pen $50 7WWwt21 Sd L SAn 65 Doog 0-ll6A 05. 532 54 Pokk D7 Pt $39r t58 Dikor 5-38 Awpb $49 60 Howerd PM Sm $32r 60 So. tOO 5pe $36 Boyle Gao-Be $32 PD Bee toDOport $49r 60 Sopereerin 568 $24 90 StinALow Wing $06 $ Sopnwoin DAB $32 50 Manin 74 TAM-t $59 62 Con Hewk P-AR 545 78 99g 0400 Bonb 542 4 CoHek P6D Pt SS4r 104 H-Pg 5450 Roe 506 62 Eookbaed Vego 524 60 MCbina Cl/ppm $55 74 Doolinlee 0-5 Ii 548 97 MCI/no Cl/ppm 575 Monoooop Sport $36 65 Wet/ Whirlwind $22 Hell Spe BolMog $43 68 Ryeo Non/en$39 07 AerOnce C-S Spt 530 65 5Bonone VTe/l $29 1 Dooglee 0-38 0$ $22 77 Leeewk Sedon $25 22 Single O-38Ob $47 72 N Mitch Sowb $49 4 Peg. Con See $45 60 MMornodnr 826 $49 7t Men/n StO Bennb $29 8t OH Moeqoito 5k $42 Ton. WW See $30 tOO OH IdeqoBonb 805 53 Cm Ooelcb Pt tC2 $42 98 Steer PTt7Koydet 556 94Cc Geehb PttC2 80499 NBlk Widow P61 $69 DeHen Cenren Soc $24 71 Deog DC-2 Tren $32 62 Hne Mn MelIlgen 035 92 Doog DC-S Tren $50 4 M Mclligon $4S 86 Hewbe Teoeo t2 $32 62 5oncg P266 Pt 526105 Con02U1/4 L&S ESA 84 5o/ng P-26A Pt $48 60 Doogle M-2 Mo/I $24 9 Woce C6 Cebin $366s Britel Bolldeg Pt $30 64 Beenk C17B Seog 82$59 SrownSonMLA $04r 94 Beoch C 17-B Steg $49r107 Goon Seeret P$P $04 05 Leck t 1 RIote $3075 Teol Al 6000 824 83 Look 11 EIotre 540107 Mon IdS-t Ron $44 62 St/neon TW DR7 $t69t Lindbere NX2t1 $29 St St/neon T/W SR7 $34108 PerobPTt9 Sr $59 225 non T/W SR7 528 90 Weno teperWing $39r 59 Br tol Pt P2-fl $2070 WestinI Lyende $32 t P2-s 552100 Wetld Lyondn 849 Pt P2-B $40 57 Po4 Trint 4-AT 82$ en e Op. $40 76 Pord 1/not 4A1 $43 XF3P-t $20114 Pord Trio, 4AT $59 osR.AoW rbk P40 $2484 RerIJoyc XPJ-2 $56 tno P28 $2893 conIng C-2Awph $69 RepSeoB Awph 83978 Gnwj2P ISonk $06 S Sep See-Roe Aw $54SR Grow fl-P Dock 829 06 P/pnn J3 Cob $2959 Gothe 0tV Bow $22 98 Look Hodon Bob $38117 Onthe 0-tV 8ow $39 63 Orooc PAF Helkot 02868 BonWiohle B/4 540 90 OH 82 Tioc MotI 559 04 Con Sw/It TP934 028 Sold Tho Otolr oblnnt nhenge 10 *flEK PRICE coolCAnEcOlOItnEe SiLO 01*00 PLOOn, 1200 Other 6 720 Pette IncI SOc Up Add 10% eli odnr hipp/ng & in. etc. o USA Con & Mee Elowheo 15% /25% /1 0/rI P cto el cotolog 5200 linclode Print [intl Proe lit ncto oboe DIOS Ilky em toremgn odd 5100 CLEYELAND MODEL & SUPPLY Co coofto neooni*,6e-s eneIltcolinnn tie 0010 30010 12101 norsoon CLEVELAND OHiO 44182 youre familiar ZAPTM CA know its superfast super-adhesive Yar. also know instances neec rime make final positioning adjustments orfill gap SLO-ZAPTM allows time up 2 minutes get everything just right Its high viscosity maximum gap filling maximum fillet forming slow cure cyanoacrylate* limited time will include 1/3 oz sample Z7TM DEBONDER purchase SLO-ZAPT * Use our ZlP-KlCKElfor immediate cure after obtaining final alignment Pacer Tech 1600 DELL AVENUE CAMPBELL CALIFORNIA 95008 408 379-9701 1 removes cured cyanoacrylates skin wod surfaces etc youre sometimes slower SLOZAPTM Z7TM will give second chance Z7TM DEBONDER odorless will nor craze plastics comes safer water based chemistry know youre going like SLOZAPTM Z7TM DEBONDER wont get stuck Available now leading hobby shops everywhere Regional Waehoosing Sales Offices FRANK TIANO ENTERPRISES 620 RTE 32N NEW PALTZ NY 12561 914 650-9906 House ci Balsa 34 ROSO thers calm air better conditions xpected 1985 WC Yugoslavia iany others may try approach honestly thought Burgos close s Id ever get FlA win said Paul Im still little surprised sult Goulburn Notwithstanding still hudderwhen think flyoff because hould have done lot better Paul says rill unable make trip 1985 Tugoslavia great pity may ave another go 1987 Paul said r now Im enjoying other pastimes Ve hope make Paul Museum/Willoughby Continued page 87 Golden Age Flight Section two fantastic decades1919 1939aviation America truly came age During time world flight profoundly affected number historic aero nautical milestones Noteworthy barnstomers flew World War surplus aircraft outlying areas intro luced general public airplane basic Jenny entranced inspired countless thousands hrill flying Fly 15 minutes pitch experience nwittingly influenced public acceptance f air travel soon become reality Establishment Air Mail Ser vice added further momentum publics acceptance airplane during era aircraft factories started San Diego two famousConsolidated now General Dynamics Ryanbegan building test-flying airplanes founders both firms representative aircraft have place honor museum display Ryans M-1 Brougham ST Consolidateds PT-l Trusty Fleet 2 Other Golden Age airplanes Cur tiss B-i Robin Aeronca C-3 American Eagle A-I Morane Saulnier MS230 Gee Bee Model Z Rearwin Cloudstar Waterman Aerobile World War II Germany invaded Poland 1939 aviation-minded people turned thoughts energies application then-present aircraft meet requirements ever-widen ing war expanded designed new aircraft Represented display period time Ryan PT-22 Stearman N25-3 7A0th-scale Junkers Ju-87 dive bomber Supermarine Spitfire XVI Grumman F6F Hellcat Grum man J2F Duck Postwar civil aviation aircraft displayed Smith DSA-1 Miniplane Jungster VI Pitts Special Wee Bee Mercury Air Shoe String single sailplane Glasfluegel Libelle Jet Age Germany first Great Britain Japan United States developed flown operationally-capable jet fighters before Axis powers defeated surge jet air travel initially began British Comet Passenger service between London South Africa May 1952 set pace rest world An Air Force contract determine feasibility vertical takeoff landing generated Ryan X-13 Verti-Jet flown off steps Pentagon final demonstration before being placed Air Museum two built other jet fighter very durable Douglas A-4 Skyhawk termed smallest jet used aboard US Navys aircraft carriers supposedly capable atomic weapons delivery Man Space Section contains mock-up Space Shuttle cockpit uniformed mannequins con trols rock moon encased plastic However museum officials stress space travel section complete likelihood will con tinue expand long manned/un manned space travel exists Women Aviation Amelia Earharts likeness story life uniforms military women occupy area other women feats extolled will greatly add viewer s knowledge vital part women played aviation Model Section Under glass models top-notch museum quality composite visual picture aviation April1985 177
Edition: Model Aviation - 1985/04
Page Numbers: 80, 81, 82, 173, 176, 177
FiA Technicalities big report World Championships such author has done us before never seems give enough room tell about innovations techniques seen Thats again looking 1983 Free Flight World Championshipsthis month especially A-2 Glider event FlA EMartyn Cowley THE CURRENT FlA GLIDER World Champion Matt Gewain sec ond American win title since Nordic event became WC way back 1946 first late Gerry Ritz 1959 Matt has leading Free Flighter Florida now living three 1983 team members came same state Like other two Florida fliers Matts models feature much use carbon-fiber reinforcement material has become very desirable reinforcing wings make strong lightweight struc tures able withstand enormous loads imposed during zoom launches Pre-cured carbon-fiber easiest form modelers use now available mail order Matts team mate Jim Bradley 1337 Pine Sap Rd Orlando FL 32817 Twinn-K dis Note hook pivot behind Atomring giving backward er line spring roAookad1ust hook position Tow ring front model CG Mom towheePenont signols latch opens timer starts Notw pivoting towhook balanced redder spring timer start spring ok will now stay position / flier chooses during tow / Timer stert ossembly tormord spr ng 80 Model Aviation SECTION A-A 25 A105 tributor model shops sheets uni-directional pre-cured fibers 008 010 thick can easily stripped small widths suitable capping spars Thick cyanoacrylate glues work best slow-cure epoxy Matt used Dremel Moto Tool router attachment inset carbon-fiber strips wing trailing edge models well reinDownward pci1 hook releases timer start arm Ie 14-C-1412 it~J L timerGuid 7VLJ 0506 light allay Eaceplate Switch loses timer Ten p ng sa fu Arm moves start timer vane Tension spring balances rudder spring give hook equilibrium DETAIL mm w C odeed n2mmod tube World Champion Matt Gewainstow hook installation Note Horejal-style rudderdelay slider toward rear tow hook plate controls zoom launch Spring iong wire reicased timer Gewains winning Pacer will featured future issue MA Yugoslavian hook-operated Seelig timer stan used Mirko Karamovic shown photo two drawings upper drawing concentrates tow hook right features timer start mechanism Illustrations courtesy ofAcro Modeller forcing leading edge center sheet ing Matt says earlier Pacer models de veloped spanwise shear cracks center panel sheeting until incorporated car bon-fiber shear web consists two layers glued 450 other under balsa sheet main spar massive x ce member tapering 3/16 x 1/16 dihedral breaks save weight Matts models have large-diam eter steel wing joiner rod trailing edge wing half being taped wing mount fuselage allows side adjusted incidence indepen dently perfecting zoom launch tran sition glide describes trimming technique thusly shim under wing trailing edge 1/64 ply vary rudder delay get lateral trim models use Ivan Herejsis style timer-delay rudder set can hear click just before model rolls out zoom glide overhead change center gravity CG position moving nose weight change pitch trim during zoomfor ward get model pitch up higher improve stall recovery back get flatter less loopy zoom Matt continues would like com mend Australians put together fine World Championships thank US team members supporters essential part success significant problem kept breaking tail boom windyweather model dethermalized land ings windy practice days So fly best thermal model trimmed calm-to-moderate winds through whole WC Consequently through windy rounds picked thermals ground verified lift two circles line before release flown windy-weather mod el has less performance may have missed maxes 7th 8th rounds liftwas very weak ability fly tactically other models may have made possible locate stronger lift thing sure circle towing high winds gave competitor chances get trouble drop flight outstanding Glider fliers dropped max because wind Towline style Towing F lA Glider using line minus winch becoming universal style fliers prefer pull line hand over hand running quick-and-easy method controling towline bother using winchwhich can produce troublesome tangles reeling out real advantage towing winch comes moment releasing model Accelerating Glider towards top tow zoom release climbing turn gain additional height has long favorite tactic Without winch flier releases end towline greater launch height can achieved flier no longer needs grab wasted handful slack line prior release order make model come off line Another benefit comes flier gets difficulty towing using line can release end prevent line tangling flier ever releases winch penalized zero score under no throwing winch rule surprising Australian FF WC however see fliers showed poor towline style accelerate models overhead chose haul handsful line speed up Gliders instead positioning models firstto accelerated fast sprint wasted yards towline negated zoom VIT nrnet give Stondord KSB2 recoed deloyAm type 4 Tinrer mith tripped towbook extended remote C \ Thin wire Start Oe/off stort ore odded switch detoil Toilpione troiling edge roised daring tow Corbon fibre tail boom Pivot Spring launch advantage models otherwise might have achieved Chinese example showed good form running end line held high arms length justbefore releasing towline would place end line 6-7 ft above ground sinking speed F 1 Glider about 1 ft/sec good zoom 15 20 ft translates maybe 15 20 seconds being gained Also fair assume line will have stretched extra 10-15 ft under higher tension launch 2kg pull used check length line originally easy see thus good towline style releasing model can pay off significantly higher flight time irrespective individuals model Timer start setups What releasable towline requires towhook-to-model April 1985 81 two photos drawing show simple timer start mechanism used Chi nese modeis activate KSB-type timers Notches timer disk extra function arm operate positive VIT per drawing lower right model being circie-towed setup allows line fall away freely hanging up achieved big problem area becomes start dethermalizer timer old pin-and-line system just wont work because flier having let go end line can no longer tug pull pin Most fliers using latch-type towhook now have some type timer-start mechanism operated until tension towline just before zoom opens latch Another problem arises especially flying windy conditions such experi enced Australia What happens gust wind unexpectedly unlatches tow hook Simply put dethermalizer timer will started will probably set close 3-mm max flier almost compelled release immediately whether wants to prevent dethermal izing short 3 mm Electric timers new electric timers provide solution problems also add risk model flyaway should flier release line starting timer towline cut during line-crossing another flier Electric timers set up run-down continually during tow time flier pulls towline however microswitch resets clock full 3mm way doesnt matter hook gets unlatched gust because further pulls towline will still reset timer least flier has option continue towing although straight increase chances still making good score lift Two excellent electronic timers available F 1 Gliders Thomas Koster top FAI flier Thomas Continued page 173 82 Model Aviation Japanese loudest A-2s field used miniature electric buzzers see battery hatch Note cover on/off timer switch keep out dirt Nice detailing Tall surfaces Mirko Karamovics model feature neat slotted stabilizer rear ward fin Photo credit Martyn Cowley Jim Bradleys excellent circle tow hookavailable mail orderfrom address thetext complete wires timer start auto rudder adjustable tow hook plate nturIIng model Paul Sunr irinmung usus numemage carbon-fiber tubes plus carbonfiber rib cap strips Fishing line 3mm invigorators span ribs underneath covering viii after reading fine iooks new work contains obscure utogyros CO-2 power traveling riodels some great Fairchild 22 threejews data number simple cale models some profiles go long present profile scale craze end $895 plus buck postage few ents governor live alifornia first kid block o have three Bills nifty books vfodel month month alute Jack McCracken museum uahty FF Scale Gloster IV-A won last Flightmasters ROW Lake Elsi tore CA Built Aeromodeller hree-view l-in/ft Jacks model spans ust short 27 weighs 10% oz F3owered enclosed DC Dart diesel 035 displacement plane no trou le getting off water Gloster sheeted back cockpit has sheet d floats A2 rest being stickmd-tissue finished Aero Gloss dope anall water rudder added right float straighten out takeoff run md ship realistically rose sur race climbed out gentle lefthand attern minute later power ut transition LH glide erfect landing picture-postaid quality model just little ight down thrust engine lew neutral control surface adjust nents knock-off wings floats yere held place rubberbands lue outstanding flight characteris ics Gloster never got tested Well gang until meet back wo months help Junior think safety md never play leap-frog unicorn Bill Warner 423-C San Vicente Blvd santa Monica CA 90402 FlA Tech/Cowley Continued page 82 timers cost $5500 including battery start switch trickle charger extra $3000 Koster Digital PO Box 54 DK-3400 Hillerod Denmark other electric timer made California Ken Bauer units available sell about $3000 no accessories electronics goodies Convenience reliability will surely force major swing over electric timers battery board model other options present themselves competitors Aus tralian WC used miniature buzzers help locate models downwind notably Dutch Japanese teams Australias Yin Morgan used small radio transmiter produced signal could tracked receiver carried retrievers Yin explained gadget symposium held during WC device may illegal some countries ultimate age increasing use thermister lift-detection devices install Gliderwired directly retrieval buzzer Such electronic Nordic would allow flier monitor air being towed through listening Continued page 176 --&%wVvu HELLO SUPER SHRThK April1985 173 BYRONVIDEO TAPE Byron Originals 1/5th Air Force STRIKING BACK exciting WWII Air Battle Reenactment Informative interesting Byron Originals factory tours production techniques eReviews both Jet Rally 84 Fun Fly 84 Enjoy 30 minute video tape comfort home rfect material club programs personal copy send $2000 Byron Originals Box 279 elda Grove Iowa 51445 Ph 712-364-3165 Please specify VHS Beta format PermaGritTM Carbide Sanding Tools STEN CARBIDE -Mans hardest material next diamond. BRAZED TO..made STEELUSA Average ModelersFLAT TOOL 040 X 11/2 X Use ii9 use balsa hard woods e7 fiberglass beaded foams epoxy fillers plexiglass DARE YOU TO TRY IT MONEY BACK GUARANTEE FOR MAIL ORDERS ONLY check M 0 ONLY $6~ No Stamps No COD SEE YOUR DEALER FIRST OR SEND FOR COMPLETE LIST OF S TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayton OH 45429 513 294-1192 loser. adde%T.l ELECTRIC NOEL & SAILPLANE SPECIALISTS 1981 World Soaring Champ DWIGHT HOLLEY IS PROUD TO ANNOUNCE NEW COMPANY TO HELP BOTH BEGINNER & EXPERT FLY INTO THE NEW ERA OF ELECTRIC AIRCRAFT WE ALSO OFFER SELECT FEW PURE SAILPIANES FREE DEMONSTRATION FLIQI-ITS CHECK OUT AND/OR TEST FLIGIEES OF VUR NEW PLANES CALL OR WRITE FOR FREE DESCRIPTIVE FLYER UPS COD FOR IMMEDIATE SHIPMENT ELECTRIC KITS IN STOCK AEROBATIC OLDTIMER SPORT SCALE GLIDERS HOLLEYS SILENT FLIGHT 203 748-0083 151 CHESTNUT RIDGE ROAD BETHEL CT 06801 FEATURING ONLY STATE OF ThE ART ITEMS 1 2 HI 8 C 8 HI FIA Tech/Cowley Continued page 173 rising falling pitch buzzer could heard easily 164 ft below ground marginal conditions extra input information could help confh-m center thermal flier has located electric circle-tow glider Too windy As new World Champion Matt Gewaln pointed out good fliers unable cope high winds Australia conventional circletow models As things turned out simple straight-tow model would have suitable such conditions high wind speed would lift models stralghtto top line once overhead Gliders would enter unwanted circle rudder kicked over Yugoslavian hooks Only Yugoslavian team seemed have complete mastery conditionsusing original Issaenko concept timer-start spring front balances auto-rudder spring back system hook equilibrium fore aft hook pulled forward straight tow stays allows model kite over head Only model flies upwind flier runs back pulling backwards line does hcok swing back initiate circle gives flier much better control Glider because can select exact moment wishes model begin circlingmost important windy weather Sharp-eyed readers will notice tow hook setup doesnt require forward rake pivot point ahead tow ring attachment point would give too stable hook flier might able pull back circle mode Instead Yugoslavian hcok has backward rake basically unstable hook stabilized balanced pull timer-start auto-rudder springs setup worked well Yugoslavs including Mirko Karanovic placed third Paul Lagan WC saw another excep * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH 1085- INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 L SILICONE 10 toot consTUBING ID 062125U S POST S/coil 235 265 3 2554$ co L LARRY DODGE AERO INC 10 MANtdINGSTiLLWATER MN 55082 USA OVERSEAS ORDERS WELCOMED AIRCRAFT PHOTO PACKS Photographs modeller aireratl enthuniant Ken P Kalynuk 12041885-2090 389 Moorgale SI Winnipeg Manitoba Canada R3J2L6 tional performance gentleman now Australian national fourth FiB 1979 third FlA 1981 second FlA 1983quite record Although flew AL-29 Robin contest interesting model new Big Apple named after models inspired design Lee Hines latest Big Max Andres Lepps AL-29 -33 German SPL design own initials PL Paul says new model has 10-15-sec advantage over COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks required change address Attach current MA maIling label check appropriate box mall Subscrip tIon Dept Model AvIation 1810 Samuel Morse Dr Reston VA 22090 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscrIption rates $1800 12 months US possessions elsewhere IncludIng Canada MexIco $2400 US Schools $900 US LibrarIes $1350 NAME ADDRESS CITY/cTATE 710 MODEL AVIATiON 1810 SAMUEL MORSE OR RESTON VA 22090 176 Model Aviation U -i z IL 0 K B 4 a n PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tuilahoma Tenn 37388 SUPER SALE hi ye dee q. d pee edi 484 Thee tqee eet di eethp te leeS Iqe d,d h peI.hel. 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UAA Jdi II IcS hee4 55 dI k,l p. d ebeet dll qlee .theOft .hi.$IH95 Mey MS tIll. eeIdh Spdly ETA 9I6l. ed.lq Ceffidieeko y edn eel se ceo VideoTech PO Box 1917-30086 Stone Mt GA 30086 QEYELAND GIANTS ~katNEW FOR GIANT SCALE BUFFS Worlds Largest Gas Plans Assortntent INTERNATIONALLY PAMOUS cD GUALIfE blASTER MODELS PLANS 5i5DiOwoiell 2t $48 I— 78Cono/ Cot PSYSA 542 72Cm 0211t/4 185 54& 04 Ce Cot PRYSA 536 62 Howord See 1k $459 _ gb Neoyleo S4so- 77 soclng B-I 70 Pen $30 02 WWn12t 34 L 536 t03 So 517G Pen $50 7WWwt21 Sd L SAn 65 Doog 0-ll6A 05. 532 54 Pokk D7 Pt $39r t58 Dikor 5-38 Awpb $49 60 Howerd PM Sm $32r 60 So. tOO 5pe $36 Boyle Gao-Be $32 PD Bee toDOport $49r 60 Sopereerin 568 $24 90 StinALow Wing $06 $ Sopnwoin DAB $32 50 Manin 74 TAM-t $59 62 Con Hewk P-AR 545 78 99g 0400 Bonb 542 4 CoHek P6D Pt SS4r 104 H-Pg 5450 Roe 506 62 Eookbaed Vego 524 60 MCbina Cl/ppm $55 74 Doolinlee 0-5 Ii 548 97 MCI/no Cl/ppm 575 Monoooop Sport $36 65 Wet/ Whirlwind $22 Hell Spe BolMog $43 68 Ryeo Non/en$39 07 AerOnce C-S Spt 530 65 5Bonone VTe/l $29 1 Dooglee 0-38 0$ $22 77 Leeewk Sedon $25 22 Single O-38Ob $47 72 N Mitch Sowb $49 4 Peg. Con See $45 60 MMornodnr 826 $49 7t Men/n StO Bennb $29 8t OH Moeqoito 5k $42 Ton. WW See $30 tOO OH IdeqoBonb 805 53 Cm Ooelcb Pt tC2 $42 98 Steer PTt7Koydet 556 94Cc Geehb PttC2 80499 NBlk Widow P61 $69 DeHen Cenren Soc $24 71 Deog DC-2 Tren $32 62 Hne Mn MelIlgen 035 92 Doog DC-S Tren $50 4 M Mclligon $4S 86 Hewbe Teoeo t2 $32 62 5oncg P266 Pt 526105 Con02U1/4 L&S ESA 84 5o/ng P-26A Pt $48 60 Doogle M-2 Mo/I $24 9 Woce C6 Cebin $366s Britel Bolldeg Pt $30 64 Beenk C17B Seog 82$59 SrownSonMLA $04r 94 Beoch C 17-B Steg $49r107 Goon Seeret P$P $04 05 Leck t 1 RIote $3075 Teol Al 6000 824 83 Look 11 EIotre 540107 Mon IdS-t Ron $44 62 St/neon TW DR7 $t69t Lindbere NX2t1 $29 St St/neon T/W SR7 $34108 PerobPTt9 Sr $59 225 non T/W SR7 528 90 Weno teperWing $39r 59 Br tol Pt P2-fl $2070 WestinI Lyende $32 t P2-s 552100 Wetld Lyondn 849 Pt P2-B $40 57 Po4 Trint 4-AT 82$ en e Op. $40 76 Pord 1/not 4A1 $43 XF3P-t $20114 Pord Trio, 4AT $59 osR.AoW rbk P40 $2484 RerIJoyc XPJ-2 $56 tno P28 $2893 conIng C-2Awph $69 RepSeoB Awph 83978 Gnwj2P ISonk $06 S Sep See-Roe Aw $54SR Grow fl-P Dock 829 06 P/pnn J3 Cob $2959 Gothe 0tV Bow $22 98 Look Hodon Bob $38117 Onthe 0-tV 8ow $39 63 Orooc PAF Helkot 02868 BonWiohle B/4 540 90 OH 82 Tioc MotI 559 04 Con Sw/It TP934 028 Sold Tho Otolr oblnnt nhenge 10 *flEK PRICE coolCAnEcOlOItnEe SiLO 01*00 PLOOn, 1200 Other 6 720 Pette IncI SOc Up Add 10% eli odnr hipp/ng & in. etc. o USA Con & Mee Elowheo 15% /25% /1 0/rI P cto el cotolog 5200 linclode Print [intl Proe lit ncto oboe DIOS Ilky em toremgn odd 5100 CLEYELAND MODEL & SUPPLY Co coofto neooni*,6e-s eneIltcolinnn tie 0010 30010 12101 norsoon CLEVELAND OHiO 44182 youre familiar ZAPTM CA know its superfast super-adhesive Yar. also know instances neec rime make final positioning adjustments orfill gap SLO-ZAPTM allows time up 2 minutes get everything just right Its high viscosity maximum gap filling maximum fillet forming slow cure cyanoacrylate* limited time will include 1/3 oz sample Z7TM DEBONDER purchase SLO-ZAPT * Use our ZlP-KlCKElfor immediate cure after obtaining final alignment Pacer Tech 1600 DELL AVENUE CAMPBELL CALIFORNIA 95008 408 379-9701 1 removes cured cyanoacrylates skin wod surfaces etc youre sometimes slower SLOZAPTM Z7TM will give second chance Z7TM DEBONDER odorless will nor craze plastics comes safer water based chemistry know youre going like SLOZAPTM Z7TM DEBONDER wont get stuck Available now leading hobby shops everywhere Regional Waehoosing Sales Offices FRANK TIANO ENTERPRISES 620 RTE 32N NEW PALTZ NY 12561 914 650-9906 House ci Balsa 34 ROSO thers calm air better conditions xpected 1985 WC Yugoslavia iany others may try approach honestly thought Burgos close s Id ever get FlA win said Paul Im still little surprised sult Goulburn Notwithstanding still hudderwhen think flyoff because hould have done lot better Paul says rill unable make trip 1985 Tugoslavia great pity may ave another go 1987 Paul said r now Im enjoying other pastimes Ve hope make Paul Museum/Willoughby Continued page 87 Golden Age Flight Section two fantastic decades1919 1939aviation America truly came age During time world flight profoundly affected number historic aero nautical milestones Noteworthy barnstomers flew World War surplus aircraft outlying areas intro luced general public airplane basic Jenny entranced inspired countless thousands hrill flying Fly 15 minutes pitch experience nwittingly influenced public acceptance f air travel soon become reality Establishment Air Mail Ser vice added further momentum publics acceptance airplane during era aircraft factories started San Diego two famousConsolidated now General Dynamics Ryanbegan building test-flying airplanes founders both firms representative aircraft have place honor museum display Ryans M-1 Brougham ST Consolidateds PT-l Trusty Fleet 2 Other Golden Age airplanes Cur tiss B-i Robin Aeronca C-3 American Eagle A-I Morane Saulnier MS230 Gee Bee Model Z Rearwin Cloudstar Waterman Aerobile World War II Germany invaded Poland 1939 aviation-minded people turned thoughts energies application then-present aircraft meet requirements ever-widen ing war expanded designed new aircraft Represented display period time Ryan PT-22 Stearman N25-3 7A0th-scale Junkers Ju-87 dive bomber Supermarine Spitfire XVI Grumman F6F Hellcat Grum man J2F Duck Postwar civil aviation aircraft displayed Smith DSA-1 Miniplane Jungster VI Pitts Special Wee Bee Mercury Air Shoe String single sailplane Glasfluegel Libelle Jet Age Germany first Great Britain Japan United States developed flown operationally-capable jet fighters before Axis powers defeated surge jet air travel initially began British Comet Passenger service between London South Africa May 1952 set pace rest world An Air Force contract determine feasibility vertical takeoff landing generated Ryan X-13 Verti-Jet flown off steps Pentagon final demonstration before being placed Air Museum two built other jet fighter very durable Douglas A-4 Skyhawk termed smallest jet used aboard US Navys aircraft carriers supposedly capable atomic weapons delivery Man Space Section contains mock-up Space Shuttle cockpit uniformed mannequins con trols rock moon encased plastic However museum officials stress space travel section complete likelihood will con tinue expand long manned/un manned space travel exists Women Aviation Amelia Earharts likeness story life uniforms military women occupy area other women feats extolled will greatly add viewer s knowledge vital part women played aviation Model Section Under glass models top-notch museum quality composite visual picture aviation April1985 177
Edition: Model Aviation - 1985/04
Page Numbers: 80, 81, 82, 173, 176, 177
FiA Technicalities big report World Championships such author has done us before never seems give enough room tell about innovations techniques seen Thats again looking 1983 Free Flight World Championshipsthis month especially A-2 Glider event FlA EMartyn Cowley THE CURRENT FlA GLIDER World Champion Matt Gewain sec ond American win title since Nordic event became WC way back 1946 first late Gerry Ritz 1959 Matt has leading Free Flighter Florida now living three 1983 team members came same state Like other two Florida fliers Matts models feature much use carbon-fiber reinforcement material has become very desirable reinforcing wings make strong lightweight struc tures able withstand enormous loads imposed during zoom launches Pre-cured carbon-fiber easiest form modelers use now available mail order Matts team mate Jim Bradley 1337 Pine Sap Rd Orlando FL 32817 Twinn-K dis Note hook pivot behind Atomring giving backward er line spring roAookad1ust hook position Tow ring front model CG Mom towheePenont signols latch opens timer starts Notw pivoting towhook balanced redder spring timer start spring ok will now stay position / flier chooses during tow / Timer stert ossembly tormord spr ng 80 Model Aviation SECTION A-A 25 A105 tributor model shops sheets uni-directional pre-cured fibers 008 010 thick can easily stripped small widths suitable capping spars Thick cyanoacrylate glues work best slow-cure epoxy Matt used Dremel Moto Tool router attachment inset carbon-fiber strips wing trailing edge models well reinDownward pci1 hook releases timer start arm Ie 14-C-1412 it~J L timerGuid 7VLJ 0506 light allay Eaceplate Switch loses timer Ten p ng sa fu Arm moves start timer vane Tension spring balances rudder spring give hook equilibrium DETAIL mm w C odeed n2mmod tube World Champion Matt Gewainstow hook installation Note Horejal-style rudderdelay slider toward rear tow hook plate controls zoom launch Spring iong wire reicased timer Gewains winning Pacer will featured future issue MA Yugoslavian hook-operated Seelig timer stan used Mirko Karamovic shown photo two drawings upper drawing concentrates tow hook right features timer start mechanism Illustrations courtesy ofAcro Modeller forcing leading edge center sheet ing Matt says earlier Pacer models de veloped spanwise shear cracks center panel sheeting until incorporated car bon-fiber shear web consists two layers glued 450 other under balsa sheet main spar massive x ce member tapering 3/16 x 1/16 dihedral breaks save weight Matts models have large-diam eter steel wing joiner rod trailing edge wing half being taped wing mount fuselage allows side adjusted incidence indepen dently perfecting zoom launch tran sition glide describes trimming technique thusly shim under wing trailing edge 1/64 ply vary rudder delay get lateral trim models use Ivan Herejsis style timer-delay rudder set can hear click just before model rolls out zoom glide overhead change center gravity CG position moving nose weight change pitch trim during zoomfor ward get model pitch up higher improve stall recovery back get flatter less loopy zoom Matt continues would like com mend Australians put together fine World Championships thank US team members supporters essential part success significant problem kept breaking tail boom windyweather model dethermalized land ings windy practice days So fly best thermal model trimmed calm-to-moderate winds through whole WC Consequently through windy rounds picked thermals ground verified lift two circles line before release flown windy-weather mod el has less performance may have missed maxes 7th 8th rounds liftwas very weak ability fly tactically other models may have made possible locate stronger lift thing sure circle towing high winds gave competitor chances get trouble drop flight outstanding Glider fliers dropped max because wind Towline style Towing F lA Glider using line minus winch becoming universal style fliers prefer pull line hand over hand running quick-and-easy method controling towline bother using winchwhich can produce troublesome tangles reeling out real advantage towing winch comes moment releasing model Accelerating Glider towards top tow zoom release climbing turn gain additional height has long favorite tactic Without winch flier releases end towline greater launch height can achieved flier no longer needs grab wasted handful slack line prior release order make model come off line Another benefit comes flier gets difficulty towing using line can release end prevent line tangling flier ever releases winch penalized zero score under no throwing winch rule surprising Australian FF WC however see fliers showed poor towline style accelerate models overhead chose haul handsful line speed up Gliders instead positioning models firstto accelerated fast sprint wasted yards towline negated zoom VIT nrnet give Stondord KSB2 recoed deloyAm type 4 Tinrer mith tripped towbook extended remote C \ Thin wire Start Oe/off stort ore odded switch detoil Toilpione troiling edge roised daring tow Corbon fibre tail boom Pivot Spring launch advantage models otherwise might have achieved Chinese example showed good form running end line held high arms length justbefore releasing towline would place end line 6-7 ft above ground sinking speed F 1 Glider about 1 ft/sec good zoom 15 20 ft translates maybe 15 20 seconds being gained Also fair assume line will have stretched extra 10-15 ft under higher tension launch 2kg pull used check length line originally easy see thus good towline style releasing model can pay off significantly higher flight time irrespective individuals model Timer start setups What releasable towline requires towhook-to-model April 1985 81 two photos drawing show simple timer start mechanism used Chi nese modeis activate KSB-type timers Notches timer disk extra function arm operate positive VIT per drawing lower right model being circie-towed setup allows line fall away freely hanging up achieved big problem area becomes start dethermalizer timer old pin-and-line system just wont work because flier having let go end line can no longer tug pull pin Most fliers using latch-type towhook now have some type timer-start mechanism operated until tension towline just before zoom opens latch Another problem arises especially flying windy conditions such experi enced Australia What happens gust wind unexpectedly unlatches tow hook Simply put dethermalizer timer will started will probably set close 3-mm max flier almost compelled release immediately whether wants to prevent dethermal izing short 3 mm Electric timers new electric timers provide solution problems also add risk model flyaway should flier release line starting timer towline cut during line-crossing another flier Electric timers set up run-down continually during tow time flier pulls towline however microswitch resets clock full 3mm way doesnt matter hook gets unlatched gust because further pulls towline will still reset timer least flier has option continue towing although straight increase chances still making good score lift Two excellent electronic timers available F 1 Gliders Thomas Koster top FAI flier Thomas Continued page 173 82 Model Aviation Japanese loudest A-2s field used miniature electric buzzers see battery hatch Note cover on/off timer switch keep out dirt Nice detailing Tall surfaces Mirko Karamovics model feature neat slotted stabilizer rear ward fin Photo credit Martyn Cowley Jim Bradleys excellent circle tow hookavailable mail orderfrom address thetext complete wires timer start auto rudder adjustable tow hook plate nturIIng model Paul Sunr irinmung usus numemage carbon-fiber tubes plus carbonfiber rib cap strips Fishing line 3mm invigorators span ribs underneath covering viii after reading fine iooks new work contains obscure utogyros CO-2 power traveling riodels some great Fairchild 22 threejews data number simple cale models some profiles go long present profile scale craze end $895 plus buck postage few ents governor live alifornia first kid block o have three Bills nifty books vfodel month month alute Jack McCracken museum uahty FF Scale Gloster IV-A won last Flightmasters ROW Lake Elsi tore CA Built Aeromodeller hree-view l-in/ft Jacks model spans ust short 27 weighs 10% oz F3owered enclosed DC Dart diesel 035 displacement plane no trou le getting off water Gloster sheeted back cockpit has sheet d floats A2 rest being stickmd-tissue finished Aero Gloss dope anall water rudder added right float straighten out takeoff run md ship realistically rose sur race climbed out gentle lefthand attern minute later power ut transition LH glide erfect landing picture-postaid quality model just little ight down thrust engine lew neutral control surface adjust nents knock-off wings floats yere held place rubberbands lue outstanding flight characteris ics Gloster never got tested Well gang until meet back wo months help Junior think safety md never play leap-frog unicorn Bill Warner 423-C San Vicente Blvd santa Monica CA 90402 FlA Tech/Cowley Continued page 82 timers cost $5500 including battery start switch trickle charger extra $3000 Koster Digital PO Box 54 DK-3400 Hillerod Denmark other electric timer made California Ken Bauer units available sell about $3000 no accessories electronics goodies Convenience reliability will surely force major swing over electric timers battery board model other options present themselves competitors Aus tralian WC used miniature buzzers help locate models downwind notably Dutch Japanese teams Australias Yin Morgan used small radio transmiter produced signal could tracked receiver carried retrievers Yin explained gadget symposium held during WC device may illegal some countries ultimate age increasing use thermister lift-detection devices install Gliderwired directly retrieval buzzer Such electronic Nordic would allow flier monitor air being towed through listening Continued page 176 --&%wVvu HELLO SUPER SHRThK April1985 173 BYRONVIDEO TAPE Byron Originals 1/5th Air Force STRIKING BACK exciting WWII Air Battle Reenactment Informative interesting Byron Originals factory tours production techniques eReviews both Jet Rally 84 Fun Fly 84 Enjoy 30 minute video tape comfort home rfect material club programs personal copy send $2000 Byron Originals Box 279 elda Grove Iowa 51445 Ph 712-364-3165 Please specify VHS Beta format PermaGritTM Carbide Sanding Tools STEN CARBIDE -Mans hardest material next diamond. BRAZED TO..made STEELUSA Average ModelersFLAT TOOL 040 X 11/2 X Use ii9 use balsa hard woods e7 fiberglass beaded foams epoxy fillers plexiglass DARE YOU TO TRY IT MONEY BACK GUARANTEE FOR MAIL ORDERS ONLY check M 0 ONLY $6~ No Stamps No COD SEE YOUR DEALER FIRST OR SEND FOR COMPLETE LIST OF S TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayton OH 45429 513 294-1192 loser. adde%T.l ELECTRIC NOEL & SAILPLANE SPECIALISTS 1981 World Soaring Champ DWIGHT HOLLEY IS PROUD TO ANNOUNCE NEW COMPANY TO HELP BOTH BEGINNER & EXPERT FLY INTO THE NEW ERA OF ELECTRIC AIRCRAFT WE ALSO OFFER SELECT FEW PURE SAILPIANES FREE DEMONSTRATION FLIQI-ITS CHECK OUT AND/OR TEST FLIGIEES OF VUR NEW PLANES CALL OR WRITE FOR FREE DESCRIPTIVE FLYER UPS COD FOR IMMEDIATE SHIPMENT ELECTRIC KITS IN STOCK AEROBATIC OLDTIMER SPORT SCALE GLIDERS HOLLEYS SILENT FLIGHT 203 748-0083 151 CHESTNUT RIDGE ROAD BETHEL CT 06801 FEATURING ONLY STATE OF ThE ART ITEMS 1 2 HI 8 C 8 HI FIA Tech/Cowley Continued page 173 rising falling pitch buzzer could heard easily 164 ft below ground marginal conditions extra input information could help confh-m center thermal flier has located electric circle-tow glider Too windy As new World Champion Matt Gewaln pointed out good fliers unable cope high winds Australia conventional circletow models As things turned out simple straight-tow model would have suitable such conditions high wind speed would lift models stralghtto top line once overhead Gliders would enter unwanted circle rudder kicked over Yugoslavian hooks Only Yugoslavian team seemed have complete mastery conditionsusing original Issaenko concept timer-start spring front balances auto-rudder spring back system hook equilibrium fore aft hook pulled forward straight tow stays allows model kite over head Only model flies upwind flier runs back pulling backwards line does hcok swing back initiate circle gives flier much better control Glider because can select exact moment wishes model begin circlingmost important windy weather Sharp-eyed readers will notice tow hook setup doesnt require forward rake pivot point ahead tow ring attachment point would give too stable hook flier might able pull back circle mode Instead Yugoslavian hcok has backward rake basically unstable hook stabilized balanced pull timer-start auto-rudder springs setup worked well Yugoslavs including Mirko Karanovic placed third Paul Lagan WC saw another excep * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH 1085- INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 L SILICONE 10 toot consTUBING ID 062125U S POST S/coil 235 265 3 2554$ co L LARRY DODGE AERO INC 10 MANtdINGSTiLLWATER MN 55082 USA OVERSEAS ORDERS WELCOMED AIRCRAFT PHOTO PACKS Photographs modeller aireratl enthuniant Ken P Kalynuk 12041885-2090 389 Moorgale SI Winnipeg Manitoba Canada R3J2L6 tional performance gentleman now Australian national fourth FiB 1979 third FlA 1981 second FlA 1983quite record Although flew AL-29 Robin contest interesting model new Big Apple named after models inspired design Lee Hines latest Big Max Andres Lepps AL-29 -33 German SPL design own initials PL Paul says new model has 10-15-sec advantage over COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks required change address Attach current MA maIling label check appropriate box mall Subscrip tIon Dept Model AvIation 1810 Samuel Morse Dr Reston VA 22090 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscrIption rates $1800 12 months US possessions elsewhere IncludIng Canada MexIco $2400 US Schools $900 US LibrarIes $1350 NAME ADDRESS CITY/cTATE 710 MODEL AVIATiON 1810 SAMUEL MORSE OR RESTON VA 22090 176 Model Aviation U -i z IL 0 K B 4 a n PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tuilahoma Tenn 37388 SUPER SALE hi ye dee q. d pee edi 484 Thee tqee eet di eethp te leeS Iqe d,d h peI.hel. 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UAA Jdi II IcS hee4 55 dI k,l p. d ebeet dll qlee .theOft .hi.$IH95 Mey MS tIll. eeIdh Spdly ETA 9I6l. ed.lq Ceffidieeko y edn eel se ceo VideoTech PO Box 1917-30086 Stone Mt GA 30086 QEYELAND GIANTS ~katNEW FOR GIANT SCALE BUFFS Worlds Largest Gas Plans Assortntent INTERNATIONALLY PAMOUS cD GUALIfE blASTER MODELS PLANS 5i5DiOwoiell 2t $48 I— 78Cono/ Cot PSYSA 542 72Cm 0211t/4 185 54& 04 Ce Cot PRYSA 536 62 Howord See 1k $459 _ gb Neoyleo S4so- 77 soclng B-I 70 Pen $30 02 WWn12t 34 L 536 t03 So 517G Pen $50 7WWwt21 Sd L SAn 65 Doog 0-ll6A 05. 532 54 Pokk D7 Pt $39r t58 Dikor 5-38 Awpb $49 60 Howerd PM Sm $32r 60 So. tOO 5pe $36 Boyle Gao-Be $32 PD Bee toDOport $49r 60 Sopereerin 568 $24 90 StinALow Wing $06 $ Sopnwoin DAB $32 50 Manin 74 TAM-t $59 62 Con Hewk P-AR 545 78 99g 0400 Bonb 542 4 CoHek P6D Pt SS4r 104 H-Pg 5450 Roe 506 62 Eookbaed Vego 524 60 MCbina Cl/ppm $55 74 Doolinlee 0-5 Ii 548 97 MCI/no Cl/ppm 575 Monoooop Sport $36 65 Wet/ Whirlwind $22 Hell Spe BolMog $43 68 Ryeo Non/en$39 07 AerOnce C-S Spt 530 65 5Bonone VTe/l $29 1 Dooglee 0-38 0$ $22 77 Leeewk Sedon $25 22 Single O-38Ob $47 72 N Mitch Sowb $49 4 Peg. 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final alignment Pacer Tech 1600 DELL AVENUE CAMPBELL CALIFORNIA 95008 408 379-9701 1 removes cured cyanoacrylates skin wod surfaces etc youre sometimes slower SLOZAPTM Z7TM will give second chance Z7TM DEBONDER odorless will nor craze plastics comes safer water based chemistry know youre going like SLOZAPTM Z7TM DEBONDER wont get stuck Available now leading hobby shops everywhere Regional Waehoosing Sales Offices FRANK TIANO ENTERPRISES 620 RTE 32N NEW PALTZ NY 12561 914 650-9906 House ci Balsa 34 ROSO thers calm air better conditions xpected 1985 WC Yugoslavia iany others may try approach honestly thought Burgos close s Id ever get FlA win said Paul Im still little surprised sult Goulburn Notwithstanding still hudderwhen think flyoff because hould have done lot better Paul says rill unable make trip 1985 Tugoslavia great pity may ave another go 1987 Paul said r now Im enjoying other pastimes Ve hope make Paul Museum/Willoughby Continued page 87 Golden Age Flight Section two fantastic decades1919 1939aviation America truly came age During time world flight profoundly affected number historic aero nautical milestones Noteworthy barnstomers flew World War surplus aircraft outlying areas intro luced general public airplane basic Jenny entranced inspired countless thousands hrill flying Fly 15 minutes pitch experience nwittingly influenced public acceptance f air travel soon become reality Establishment Air Mail Ser vice added further momentum publics acceptance airplane during era aircraft factories started San Diego two famousConsolidated now General Dynamics Ryanbegan building test-flying airplanes founders both firms representative aircraft have place honor museum display Ryans M-1 Brougham ST Consolidateds PT-l Trusty Fleet 2 Other Golden Age airplanes Cur tiss B-i Robin Aeronca C-3 American Eagle A-I Morane Saulnier MS230 Gee Bee Model Z Rearwin Cloudstar Waterman Aerobile World War II Germany invaded Poland 1939 aviation-minded people turned thoughts energies application then-present aircraft meet requirements ever-widen ing war expanded designed new aircraft Represented display period time Ryan PT-22 Stearman N25-3 7A0th-scale Junkers Ju-87 dive bomber Supermarine Spitfire XVI Grumman F6F Hellcat Grum man J2F Duck Postwar civil aviation aircraft displayed Smith DSA-1 Miniplane Jungster VI Pitts Special Wee Bee Mercury Air Shoe String single sailplane Glasfluegel Libelle Jet Age Germany first Great Britain Japan United States developed flown operationally-capable jet fighters before Axis powers defeated surge jet air travel initially began British Comet Passenger service between London South Africa May 1952 set pace rest world An Air Force contract determine feasibility vertical takeoff landing generated Ryan X-13 Verti-Jet flown off steps Pentagon final demonstration before being placed Air Museum two built other jet fighter very durable Douglas A-4 Skyhawk termed smallest jet used aboard US Navys aircraft carriers supposedly capable atomic weapons delivery Man Space Section contains mock-up Space Shuttle cockpit uniformed mannequins con trols rock moon encased plastic However museum officials stress space travel section complete likelihood will con tinue expand long manned/un manned space travel exists Women Aviation Amelia Earharts likeness story life uniforms military women occupy area other women feats extolled will greatly add viewer s knowledge vital part women played aviation Model Section Under glass models top-notch museum quality composite visual picture aviation April1985 177