Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 SEE YOUR DEALER NOW Giant Scale ModelsPlans Accessories 516-234-5038 by Nick ZfroII 29 Edgar Dr Smlthtown NY 11787 USA Fiberglass CowlingsAll Balsa Canopies AvailableOur Plans Sent Post-Paid within USA Send 22 stamp Full Catalog ABM5ZERO2h19YSpan$2700 F4U CORSAIR2/ Span82700 CURTISS L42A Span$2700-or 1I-2u nR-MU UucteO -ans AT4 TEXAN24 1 Span$2700F4 PHANTOM$850 POFBEARCAT2A Span82100 FOKKERDR-127 Tripe$250035Wing Span400aq Wing Area SOPWITH TABLOID Ouarter Scale77 Span$2400SAAB 37 VIGGEN$850 SOPWITHTABLOID 2W Span$180032WingSpan400sqinWingArea Practical Sized Giant Scale Models Popular Aircraft 4Bertram Losami 5Werner Schweiker 6 Gunter Hop 7 Tony Frackowiac 8 Ivan Kristensan 9 Dave Brown 10 Bill Cunningham 11Syonichi Suzuki 12 Hajime Hatta 39133 39000 38467 38367 38233 37900 37267 36567 35800 9462860 9432800 9302792 9272766 9242800 9162767 9012721 8842731 8652708 3 5 7 9 5 8 11 10 12 Only point prevented Tony Frac kowiac being finals Bill Cunningham 45 points back field selected after lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation
Edition: Model Aviation - 1986/01
Page Numbers: 80, 81, 82, 83, 84, 85, 88, 90
Han no Prettner went home marbles once first events use Turnaround pattern FR Germany team bested others Much work still needs done create ideal design quality flying within box types weather U Howard Crispin Top Opening ceremonIes includea 1159 raising yortne u nauons represenisa nero can see tne team Venezuela Italy USA Great Britain Above Left Awards ceremonyforthetopthree individuals Henna Prettnerfinlehed 1st Wolfgang Maft 2nd Bertram Lossen 3rd Above RIght end wasthe team Federai Repubiic Germanythatwas 1st Japan finIshed 2nd USA 3rd 80 Model Aviation Left Hanno Prettner R father Hans Hanno Austria first piace once yearwith Supra.Piy Piano lea con ventional Pattern design derived Hannos earilerCalypso used iong-stroke engine did otthe planes Heavy ciothing wear indicative weatherthey Right endure weather mostwere judges Standing L-R H Crispin USA M Ardonceau France G Frankiin Great Britain Hans Kunze FR Germany H Kerns Switzerland C Gerard Luxembourg Kneeling L-R S Piougatrup Denmark Beekman Netherlands H Eichman Liechtenstein Goosens Belgium Tough job AT FIRST SIGHT would hardly think Flevohof Netherlands appropriate site 14th F3A RC Aero batics World Championships drove polder after arrival Am sterdam saw nothing fields wet grassland saturated recent rains difficult envision proper flying site An inspection flying field use two days before commencement event showed fears well founded field extremely bad shapebut organizers managed overcome unique manner laid out two runways 10 75 meters outdcor carpeting carpeting runways typical care planning Organizing Committee Royal Netherlands Aero nautical Association affiliated aero modeling groups put event competition ran smoothly major problems entire contest period except things man cannot control rains plagued area prior competition typified weather week event Rain fog wind very Left PAl jury members L-R Werner Groth Ron Chidgey Tony Aarts check out flying site Heavy rains saturated ground too much runway use highly-prepared group organizers placed outdoor carpeting over grass workable runway Right Ludwia Mstt carries brother Woifasnos Joker back Dits far popular design flown Boots testify rains Probabiy important new development event Rennat Lemmens CL new patented tuned pipe pipe has three chambers iined fiberglass isa very lightweight carbon-fiber assembiy Belgian modeis using pipe registered oniy 95 dB noise tests Eddy Edwards Austraila R gets facts pipes designer FAd Left Bertram Lossen headband FR Germany placed 3rd Standing left Johannes Graupner owner worlds largest model companies Right Moreno Lippi transmitter Orion Power Italian CMB engine Lippi memberof Italian team 25th Note plastic cover transmitter keep out liquid sunshineand better days colorful US team wound up 3rd place Team members supporters L-R Dick Penrod team manager Steve Helms Bill Thomas Bill Cunningham Dave Brown Saily Brown Ed Keck Tony Frackowiak Dave few using four-stroke engine cool days us time Normal attire heavy clothing rub ber boots pictures show Consideration other group also needed 10 individuals whn wr scheduled sit judge flights wet muddy area four days werent forgotten raised platform built plywood bracing being provided Two flight lines used separated 800 meters oroved Man red jump suit Henny Van Loon Contest Director 14th World Championships managed overcome adversity weather help great staff volunteers able keep event running smoothly week sufficient prevent crossover inter ference flights line trees 300 meters front Line another about 250 meters front Line Bbath parallel flight lines Althe F3A pattern should flown Left Dalotel model design Roast 61 LS power Eddy Edwards UT Ausiramla aay piacca qna pussies imnciuaing aayj bit fired up theywere AMA Nets Right Capriccic done bythe Glezendanner brothers Switzerland flown 29th place Emil Alternately powered 06 61 VF 0S PS 120 little difference noted between engine used 82 Model Aviation Left Aitairs flown Gunter Hoppe Werner Schweikerof Germany Gunters models foreground have black pipeswhlle Werners pink carry out trim motif Recess side ths fuselage aiiows pipe mounted fiush low drag Right Nedim Bek Turkey 70th place another competitor fiew Joker popuiar Pattern ship being kitted Europe Japan about 150 meters front pilot appeared apprehension among some fliers about airplane-grabbing trees effect ability some keep flight within box World Championships always core fliers have competing level years year no exception individual newcomers new nation Thailand countries full threemember teams year event US two years before Conspicuously missing South Africans unfortunate fact international politics extend aero modeling activities contest got underway could quickly sort out fliers two groups first obvi ously have practiced competition very fierce other group areas competition prob ably critiquing hone skills Left Dave Brown District - Challenge Ill U5 Tiler tO quaiiry tor Tinaisana inc oniy inc finals use four-stroke engine Tony Frackowiak barely missed qualifying just point behind Davel Right Canadas Ivan Krls tensen Summit design thats powered YS engine Having great year Ivan 1st FAI Turnaround event AMA Nuts won Danish Championships week before WC highly-respectable 5th place finish premier avant January 1986 83 beautiful Crane powered YS 6OFS engine belongs Japanese flier Hajime Hatta Workmanship finish Japanese models outstanding expected level necessary win World Cham pionships Hopefully much learn ing experience Sunday morning September 8 78 fliers 28 countries arrived begun processing models transmitters grumbling about having dis assemble some aircraft almost re quired major surgery done check gyros illegal F3A Only minor problems put appearance organizers got things smoothly underway Processing time gave us first look what competitors would flying year few surprises Monday devoted training prac tice flying teams After im pounding transmitters bright early team half-hour period linetime member have flight half-hour scheduled morning again afternoon checking out judges conducted FAA Jury Australia led off practice flying Line 800 am Denmark doing same Line B Turkey Thailand last fly periods ending 500 pm Following official opening ceremony air show Pitts performing close FAA would have taken away pilots license country reception team managers officials VIPs dinner left everyone ready official flying begin Tuesday Competition scheduled begin 800 am excellent planning cooperation weather flying started precisely time plan get 1 ds three days order get required four rounds goal met day As flying progressed several trends came apparent Four-stroke engines have taken F3A storm talking number contestants found concerned about four-strokes main tainability reliability also has no advantage power measured noise levels Whatever various reasons twostroke engines preferred models part little different appearance pre dominating scene some time planes larger have somewhat lower wing loadings powered longstroke engines running lower speed higher-pitched variable-pitch propellers aircraft flying slower although still too fast get best score m F3A schedule Most fliers some problem flying box Some appeared willing take very low turnaround scores hopes getting better scores center maneuvers have high Kfactors practice required top per formance middle fliers tended place maneuvers such turnarounds intruded center-maneuver area some center maneuvers extended well turnaround area caused considerable downgrading faster aircraft flew larger maneu vers tended exceed 60 vertical reference avoid vertical problem some flew quite far out causing other errors apparent perfect aircraft F3A yet planes performed best staying box same ones seemed have difficulty coping windespecially strong crosswinds present two days Much learned should result im provements soon design specialized aircraft Tuesdays flying brought results probably did really surprise followers F3A World Championships thing perhaps surprising con sistency top 12 fliers after first round 12 remained top 12 field 78 throughout entire contest end Round 1 field stood order PtName Country 1 Hanno Prettner Austria 2 Wolfgang Mat Uechteiistein 3 Hajime Hatta Japan 4 Bertram Lossen FR Germany 5 Glichi Naruke Japan 6 Bill Cunningham USA Gunter Hoppe FR Germany 7 Syunichi Suzuki Japan 8 Tony Freckowiac USA WemerSchweiker FR Germany 9 Ivan Kristensen Canada 10 Dave Brown USA Score 40267 38633 37567 37433 37300 36967 36967 36733 36633 36633 36100 35933 1000 959 933 930 926 918 918 912 910 910 897 892 Wednesday One-third Round 2 flown Tuesday last twothirds flown second day competition complete schedule planned two-thirds Round 3 flown day remainder round flown Thursday weather mod erated somewhat Wednesday Some sunshine seen during day 84 Model Aviation Japanese team member Glichi Naruke flew Aurora YS 6OFR engine However used variable-pitch propeller Kltted MK plans Radio Technique magazine Surasak Bumphenboon representatives Thailand F3A World Champs first time 62nd left Tony Frackowiaks Challenge models afternoon temperature approached 700 second round moved top 12 contenders Line except Matt Line B positions end Round 2 begin see two standings interest note round winner cumulative positions P1 1Hanno Pretiner 2 Wolfgang Matt 3 Bertram Loss 4 Werner Schweiker S Gichi Naruke 6 Ivan Kristensen 7 Dave Brown 8 Stinter Hoppe 9 Bill Cunningham 10 Tony Frackowiac 11 Sytinichi Suzuki Hajime Hatta Score 41167 40500 38900 38500 38261 38033 37233 37081 30800 35287 35067 35067 1000 984 945 935 930 924 904 900 889 857 852 852 Sums %Pt 20001 19432 18753 18455 18564 18218 17989 18187 18078 176711 176412 178510 As can seen some shifting positions same 12 names still appear top Lossen Schweiker Kristensen improved positions Hatta Suzuki did fare well Hatta especially may have some reason off some Tuesday scheduled fly mechanic tripped over pipes laid out sound check struck fin broke part off started carry plane out runway Hatta reflew Wednesday sec ond airplane may such big difference performance Thursday qualification flying prior finals should have com pleted day wasnt Solid fog until after 10 oclock prevented flying everyone standing around damp cold Once fog lifted day turned out pretty good far wind concerned clouds remained low rather gloomy day late start meant about one-third Round 4 would have flown Friday day flyoff finals Since one-third Round 3 flown Thursday standings end Round 3 could posted showing following positions P1 1Hanno Prettner 2 Wolfgang Matt 3 Werner Lossen 4 Ivan Kristensen 5 Dave Brown 6 Stinter Hoppe 7 Sytinichi Suzuki 8 Tony Frackowiac 9 Giichi Naruke 10 Weiner Schweiker 11 Hajime Hatta 12 Bill Cunningham Score 40367 39300 39100 38433 38233 38100 37733 37500 37361 37200 36733 36400 1000 974 989 952 947 944 935 929 926 922 910 902 Sum %FL 30001 29172 28443 27735 27438 27827 289910 269811 27824 27876 269512 27099 end Round 3 obvious first place qualifying rounds decided since three rounds count Hanno Prettner maximum per centage first three rounds also apparent some excellent flying would have done Round 4 attack positions second third place Friday needed complete Round 4 day conditions much different Watching flights gave spectators some inkling what flyoff finals afternoon would like conditions did change cold windy judges dressed warmly possible knowing would out day long conditions fliers wind created another handicap straight across runwaythe worst directions top off blowing toward fliers conditions likely much help improving scores end fourth round selection flyoff finals could made Since FAI procedure take top 10% finals 78 con testants top eight fliers would compete gold qualifying ended conclusion Round 4 P1 1Wolfgang Mati 2Hanno Prettner 3Siichi Naruke Sums Score % %P1 41367100029582 4096799030001 3916798128174 Continued page 88 January 1986 85 winning seam tram ins eaerai HOPUDIIC uermany accepts ins seam sropny LIi Ernst-Peter Kattelman manager Gunter Happe Bertram Lossen Werner Schwelker Ins inaivigun winnuru ruguivag muir uwuruu UI mu m4uuI Lul mu gang Matt 2nd place winnerof Warren Hitchcock award Hanno Prettner win puuu Bertram Lossen 3rd overcame wind rain earn soughtafter honors r LEADER$KIP IN SILENT FLIGHT PERFORMANCE WITH 05 ELECTRIC POWER SPORT SCALE-3 CHANNEL 54 SPAN 425 SQ IN AREA 40-45 OZ 2eCsate OLDTIMER/SPORT-3 CHANNEL 58 SPAN 490 50 IN AREA 41 -46 OZ fflissZos c/n qeles SPORT SCALE-4 CHANNEL SPAN 340 SO IN AREA 40-45 OZ LUCiFER TWO METER 05 ELECTRIC 78 SPAN 600 50 IN AREA 40-45 OZ ThE IOWIT SERIES THE PREFERRED SAILPIANES FOR ALL FLIERSNOVICE TO COMPETITOR ~oirr 941 995SPAN 941 50 IN AREA 60 OZISQ IN WING LOADIN 103h 7 CHORD YOUR SOURCE FOR HI STARTS WINCHES RETRIEVERS ELECTRIC MOTORS AND OTHER QUIET FLIGHT SUPPLIES PROPHrr 7875 SPAN 613 SQ IN AREA 625 OZISO IN WING LOADING 81/2 TO 5/2 CHORD DAVEY 11 ONE WOOD LANE MALVERN PA 193 215 6444772 SEND SASE FOR INFO OR 4 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lunch chance concerned get little warmed up flights marbles began Two rounds would flown high-scoring round counted eight would give could two factors seemed have much bearing outcome far would apparent stiff crosswinds present finals box wind made difference see flying caliber know excellentbut best can have some difficulties Japan ese problem getting out box fast aircraft otherwise windhandling qualities flying out standing others appeared combination both problems scores overall lower flyoff finals Both flyoff flights shown listing below includes final standings top 12 although best flyoff score counts PL 1Hanno Prettner 2 Wolfgang Matt 3 Bertram Lossen 4 Giichi Naruke 5 Ivan Kristensen 6 Werner Schweiker 7 l3unter Hoppe 8 Dave Brown 9 Tony Frackowiac 10 Syunichi Suzuki 11 Bdl Cunningham 12 Hime Haifa P11 39400 39988 36650 38550 38600 38225 37325 37238 Fl 2 39700 39738 39300 38475 37831 38350 36313 36025 Percentage PlO Tot 1998 4898 2000 4958 1978 4838 1936 4753 1904 4731 1930 4730 1828 4859 1813 4829 2766 2731 2721 2708 After four days hard competition Prettner Matt Lossen took medals Matt highest single flight score Round 4 received Warren Hitchcock Award banquet through error presented Hanno Prettner correction made during evening Scoring shown through 12th place because significance number end competition first-place team FR Germany Japan second United States third should note three team members three nations top 12 testifies caliber flying being done group competi tors deserve great big round applause Sidelights During the first round during Continued page 90 88 Model Aviation Designed Bill Winter DAVE ROBELENS PRONTO AND SUPER PRONTO HIGH QUALITY 48 SPAN KIT FOR 09 TO 25 ENGINES FEATURES AlewingdesignwthNgh wing stsjility arel excellent inverte pertrxmaece GenhlefcrlbenoviceFuntorlte expeil wib vereatile petiamarice 4-6 hair i1-llre assembly f Cr beginrur Ptecisiac masNrte-cut 86 balsa plywoCri arel spwce Rdled lull size plars showing fl canpiete wing Step-t-step ktbors fur easy assembly Famed main Iarxling gear Excepilaul small lletii perfcMmance May tewn ito 3 clmnels Tested mcurnmerdnl arvi aproved RIC Maleler Megazire arel Malel Aviation -July 1984 IF THE ENGINE IS GOING TO RUN THIS WILL START IT Held $39g5 &Wrmnta Reid $4995 m*r m yaw isitutm net stack ader 1 deater acler direct tar post paid delively Virginia reScknts jd 4O/ sales 12X TIDEWATER HOBBY ENTERPRISES / Route 1Box24lD Lanexa Virginia 23089 Phone 18041 966-5092 2 burn 20 25 gallons fuel year share grass field gophers Hot restarts runway often difficult modified electric starter NiCad pack too heavy awkward carry runway wanted something small light Bumpstart 1 /2 diameter standard size drive cone 6 long weighs 10/2 02 did want bat tery charge designed around stainless steel spring spring wound turning body drive cone opposite directions four complete turns three turns 10 25 enginesl steel ratchet inside locks spring tension use starter tire plug hold aircraft hand Bump drive cone rubber against spinner prop nut drive cone slides back releases spring energy spins engine Bumpetart does have some limitations like best through 1010 50 size engines pit start pattern aircraft Piped ST. 61 ABC Four cycle Yes OW rotation No like idea see hobby dealer order direct PS have retired electric starter NEU KRAFT INC 921 12th St NE Jamestown ND 58401 701 252-1092 Sincerely Chet Neukom 24983 List Price $3495 US Check allow time MO Postage Paid ND Res Add 4/o testing sound levels Belgian team members suspected little hanky panky full-throttle tests seems being tested sound levels much lower anyone else good reason Renaat Lemniens Belgium has new patented tuned pipe does outstanding new piece equipment Flevohof Lemmens pipe constructed basically carbon fiberwith alinerof fiberglass Itis extremely light Belgians tested 9596dBA ground exceptional Dave Brown brought back possibly may market pipe US Going price over $3800 Dean Pappas columnist Fly ing Models got testing report ing FM lookout report 14th World Championships F3A memorable event Organ izing Committee volunteers Royal Netherlands Aeronautical Associ ation plus various clubs deserve lot credit job well done As own Academy Netherlands aeromod eling division celebrating its 50th anm versary What better way publicize celebrate event very suc cessful World Championships Racer/Lorbiecki Continued page 78 cracking under heavy use must reinforce wing-fuselage joint fi bergiass Final assembly finishing Mount engine landing gear plate fuel tank fuel shutoff satisfied fit everything unmount hardware apply finish original done red white blue Hobbypoxy kind finish takes little longer apply durable gives nice shine also very lightweight easy repaint need choose method used first brush coat clear Hobbypoxy Light ly sand coat apply another After coat has cured wet-sand entire model 320-grit wet/dry paper After final sanding surface should glass-smooth Note elevator yet installed Decide paint scheme will use fancy pattern looks nice hard match model needs repaired Spray base color over entire model Mask areas second color black electrical tape Spray epoxy after has heated slightly container hot water make paint fluid easier spray painting com plete let cure day two rubout finish automotive rubbing compound Waxing model over produces nice shiny finish will last long time Mount elevator favorite Continued page 92 90 Model Aviation