Free Flight Duration Harry Murphy STATIONARY AUTO-STABS favorite contributing technical expert Gil Morris returns column month interesting ap proach installing effective auto-stab device competition Gas models has no strings attached Gil reports am forever trying new ways trimming models because think much learned area have thinking about some time recently set up 375-sq-in Toothpicks test worked well am refer ring no-moving-parts auto-stab noth ing pair 3/s-in-wide times 3-in-long strips cut aluminum beverage can supported off stab surface -in -long strips /6-in-sq pieces balsa rear kin strip crimped down approximate 150 angle first try see sketch procedure first trim new model glide hand Now try short power flight indicates loop tendencies requires con siderable right turn prevent possible looping apply no-moving-parts auto-stab strips trailing edge upper surface hori zontal stabilizer shown accompanying drawing Use two deflectorsone either side stab centerline about midway out will act like positive stab incidence under power affecting original hand-glide trim reason during power ve locity air moving over stab high enough stay attached top side stab airfoil deflected downward air pass ing under metal strips contrast during glide air velocity much lower air will separate upper stab surface thereby rendering deflectors ineffective Eureka advantages movable auto-stab its attendant headaches However should forewarned pos sible side effect using approach Theoret ically should velocity model increase great deal during glide very strong thermal air moving over top stab may reattach itself enough activate influence deflectors causing nose model drop some semblance dive situation Just serious possibility really am sure yet Well about straight-up climb strings levers multipurpose fuel cut off timers Sounds neat model crashes send complaints hate mail Gil Morris just work bergs latest Al Lidberg sent accompany ing photos latest addition growing stable Free Flight Scale sport flying model effortsa scaled-down 22-in Telco CO-2-powered pylon cutie called Frisco Kid name model strikes familiar note well should full-sized original design entry 1954 FAI World Champs held Long Island NY Al also relates noteworthy story associated origins subject 54 Champs entry seems going event designer fine-performing model regarded having excellent chance placing high competition however subsequently plagued engine overruns due incon sistent nature pneumatic timers state-of-the-art fuel cutoff mechanisms era timers operated regulating airflow out chamber containing spring-loaded pis ton Fuel oil dirt vibration plagued re liability devices carry-over then-fairly-recent days spark ignition systems Anyone has some experience types timing devices can testify inaccuracies aggravations Therefore common practice days purposely set timer few seconds short max engine run limit prevent overruns Obviously would place very good stead todays 70 Model Aviation Leo Sullivan picked up model garage sale Design unknown British maybe Larry Willis torches dethermalizer fuse Nostalgia Gasellgible Yo-Ho Wright Field OH Air Force Museum building background rebirth vintage 1 Oi RubberScale kit istypifled Enrique Walshs Wiley Post Model bipe 1 Murfs ME-i 09R Both Comet Models plans Thirties Forties modelerswho still active rememberthese kits Let us hearfrom critically-short-engine-run competitions Anyway Frisco Kid eventually chugged eleventh place its designer although disappointed went away purpose noted European competitors using reliable clockwork timers Subsequently bought some mechanical clockwork camera timers set about develop now-fabled Tick-Off brand mechanical timers name John Tatone initial venture beginning company still know today JTec Isnt interesting simple model airplane com petition fizzled provided turn suc cessful lifelong occupation contestant Al peddles plans instructions latest version Frisco Kid puny sum $3 postpaid addition offers some 30-odd plans other small CO-2 Rubber Scale Peanut Scale NoCal Scale profile fuselages designs too numerous list order Frisco Kid plans add additional dollar receive catalog includes picture description price offering Available plans range two five dollars cost including six-plan Peanut Scale packet $5 prepaid address AA Lidberg 614 E Fordham Tempe AZ 85283and tell him heard about service love recognition Turning 50 Minneapolis Model Aero Club MMAC will chalk up its fiftieth year exis tence year Founded 1937 has continually active over years aspects Free Flight modeling Power Rubber Glider Scale Indoor has also published fine club newsletter since 1959 Two special occasions being planned mark golden anniversary year First two-day Free Flight contest scheduled weekend August 8-9 1987 Blame MN contest site on-the-field-barbeque feast slated Saturday evening Watch Contest Calendar Model Aviation contest event details Second Fiftieth Anniversary Banquet being planned September/October time-frame Specifics event will forthcoming MMAC firmed up insure fine turnout mark occasion renew old friendships MMAC wishing alert former club members friends about two events Additional info regard may obtained contacting club spokesman Dan Spehn 3618 72nd Ave N Brooklyn Center MN 55429 phone number 612 561-6508 Congratulations first 50 MMAC hope next 50 years will just mem orable Getting 10 worth Just mod eler age group initial infatuation model aviation came through early teenage adven tures l0 flying model kit readily available local five-and-dime stores period Comet Megow Joe Ott Hi-Flyer few brand names remember suppliers intriguing diminutive Stand off Scale stick-and-tissue flying model construc tion kits then-popular commercial military full-scale aircraft Continued page 171 Al Lldbergs CO-2-powered downsized 22-in span version Frisco Kid FAi Power modei Fifties Motor Teico unit August1987 71 Fantastic Youve got read about idea column An automatic nomoving-parts auto-stab VIT Vi utes came down field about charge too Cessna spans just under 24 weighs about /2 oz all-up Well gang keep crankin work Peace Bill Warner 423C San Vicente Blvd Santa Monica CA 90402 FF Duration/Murphy Continued page 71 no learned person about aid proper model construction techniques flight trimming models themselves trial-and-error self-teach method along lines build crash repairfollowed subsequent rebuilds additional crashes numerable repairs etc though thrill watching crudely built models take wing may have lasted no few seconds best creating flight certainly intriguing normal flight scenario began finger-wound rubberband loop cut old inner tube energy quickly spent causing models zoom nose up climaxed ultimate stall followed various crash modes early fruits labor being un successful flying department have since wondered what kept fascinated building more Surely real aircraft flew much better miniaturized like nesses obviously much leam about science flying model aeroplanes no TV few formal community youth activities days however weeklong entertainment contained constructing contents colorful cardboard cartonsand dime What better way away evening hours listen ing Lone Ranger Sky King radiu same time Yeah about Captain Afidnight Terry Pirates Jack Arm strong too RMcM I Send SSAt cataint sheet complete line PAW DIESELS Englands Finest 049 35 R/C STD Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 MACHINE SHOP SUPPLIES ING MACHINES LATHtS BLUEAiDEF TOOLS EO/ MACHINERY AND tOOlS INCFOr CIte IAviation I0Modeler POE. 536Y iceno WV 25620 623538 Corel8 nine UNIMAT 3 FREE dni cheek lie SPECIAL FREE feeight FEEE &Iee beN Save Over e90ee Eventually acquired first gasoline engine model construction stretched weeks instead days subsequent crashes disastrous repairs took much longer former interest log kits ceased rather abruptly progress can destroy sublime now club newsletter recently adopted policy run occasional full-size centerfold some old 10-centers complete paper copy original printwood Ah miracle handy copier machines Soon began receive reports some readers actually beginning build fly things Requests us publish followed along requests specific designs TV reruns must really getting boringright Anyway what followed always seems Inevi table Free Flight get two modelers gether building similar type model what results phenomenon call competition takes two declare contest race Interest event currently such two area contests have scheduled lOg Scale concept event cards 87 summer outdoor flying season also understand con cept has picked up other areas country formal competition being added outdoor contest event schedules some locales well years major Free Flight interests have primarily confined Gas-powered categories comply club project build another Comet 10-center after sand passed through glass personally ac cepted major challenge Egads parts certainly dinky didnt wear glasses teenager now wear trifocals just getting proper focus teeny-weeny cutout parts took some getting used Some other incidental differences brought about during 40-year interim might also worth mentioning readers may have aspirations taking lOg project selves Indoor addict used such endeavors following may somewhat redundant bat have recently existing steady diet big iron like have maybe some following can somewhat ease shock First have choose umpteen design candidates lOg category may take since over 50 designs carried Comet Model Airplane Com pany logo alone probably number sources can obtain plan copies few John Pond Old Time Plan Service 4269 Syoko Circle San Jose CA 95136 offers probably largest listing choose plans run about $275 plus 20% postage should also toss another $150 request latest two-part catalog listing Old-Timer Flying Scale plans makes available Jack Fikes Scale Flight Model Company 630 Fairway Lane Bloomington IN 47401 makes easier get started offers plans limited number Comet 10-cen ters $2 will send appropriate printwood additional $2or whole kit cases $695 Toss $2 kit satisfy US Postal Service charges Add another 75g additional kit might order Finally Don Belote 1834 Brame Place ledo OH 43613 peddling both plan matching paper copy printwood sog number designs out Swap Shop Toledo RC Show last spring might wish drop him SASE inquire what particular designs has available total mail order cost point have surely noticed going have lot lOg invested project personal construction choice Comet Messerschmidt ME 109 began just plans copy paper copy printwood past have some degree luck transfer ring ink copier machine item paper sheet balsa hot-iron method simply rubbing dope thinner back side paper locating ink side face-down balsa sheet However time simply sprayed back paper template copy 3M Spray Mount art paper adhesive comes aerosol can will instantaneously adhere template copy wood will also remain tacky enough days enable pulling off template after part has properly cut out method also serves another purpose added paper backing balsa less chance cracking out pesky little bits part razor blade youre cutting out chief offenders contrary with-the-grain portions between close-together notches tiny fuselage former Since intending ME 109 outdoor flying /6-in-sq stock required would have rather hard sturdy found some appro priate 36-in lengths local hobby shop lOg Also picked up special package 50 18-in lengths Micro-X booth Toledo purpose packet plus packet Japanese tissue 1 have some green tissue make model look authentic cause another $9 expenditure addition $195 bottle CyA cement going make construction piece cake comparison what 5g tube acetate-base model cement ages past Are keeping running account expenditures required August1987 171 Flight Boxes ransmitter Trays information send SASE Triple R Contractors Wood Products Division 6310 SW 172 Ave ft Lauderdale Fl 33331 call 305-434-8338 434-8446 construct lOg model other hand lot things going Obviously acquired some semblance construction expertise over years CyA godsend sandpaper since introduced nitrate dope great improvement over flour-and-water paste adhere covering structures loop A-in Sig rubber held distinct advantages over slices old inner tubes note old inner tubes also now extinct readymade plastic prop sure practical time-saver sum total efforts emerged 16-in replica ME 109ready simulated bat tle skies over Europe once again NORTH AMERICAN AIRCRAFT MUSEUM GUIDE WhoWhatWhere--- 1987 Edition MORE $975 US Postage Paid Cheeks MOs BrucelBeeson Publishers 2428 East 56th Place Tulsa OK 74105 CA MASK CA glue works wonders building models right Unfortunately gives enouh fumes knock vulture off carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumes soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs Pelican Enterprises Inc 265 OXFORD LANE BLOOMINGDALE ILLINOIS 60108 P S Send catalog mode/ers supplies summary progress made building ma terials techniques has definitely improved point good old days look good once did yes certainly received 10-cents-worth jollies scratchbuilding lOg ME 109 However believe next project will new Class D Gas job insteadas figure can end up lot model about same money Meanwhile Tally Ho chaps Theres ME 109 coming Out sun nine oclock Newsletter spotlight suppose good time single out personal club affili ation thereby utilizing minimum can dlepower beam next unsuspecting subject Free Flight club newsletterthe CIA former Central Indiana Aeromodelers Nat urally have soft spot grass-roots rag since must admit being its creator back early winter months 1974 having its editor largest chunk ensuing 13 years reasons its origins little unique some respects initial issues came about result attempting rectify some basic needs then-fledgling Free Flight club trying establish foothold AMAs confusing Free Flight contest-scheduling re gions upper northeast corner Indiana stake driven ground peculiarity stake simply walk around once have traveled through sovereign states Indiana Michigan Ohio Un fortunately will have also passed through AMA districts 3W 6 7 well districts contains close-in hotbed Free Flight contest activities pursued clubs must ac complish annual outdoor contest schedules within approximate five-months time-span good contest weather time AMA Contest Coordinators three districts having considerable difficulty communicating resolving constant contest conflict using cumbersome AMA coordinating setup exchang ing postcards etc know because per sonally serving District VI Contest Coordi nator days until began work directly contest-sponsoring club three AMA districts HOBBY D outdated 4 old ard older basic RC systems can easily update adding dual rates mixing extra channels frequency changes etc need basic electrical ability snd simple tools Written R/C tech 10 yrs exp 142 page journal includes sources diagrams charts detailed modifications written simple under standable text send $1995 check money order HOIST RADIO 3001-A Kavanaugh Rd Wilson NC 27893 Phone 919 291-8548 Hobby Radio also offers professional R/C repairs mods complete systems service battery pack servos vibration testing new frequency change etc manu facturer repairs guaranteed performed minimal turnaround Send sase price list complete services specific requests club pinpoint desired contest dates months ahead time did problems begin dissolve took con siderable communication date-juggling before workable calm settled areas contest scene Agreeing contest dates mat ter needed improvement recognized some type single-point vehicle needed distributing information such annual con test calendar unforeseen last-minute revi sions planned meets felt advan tageous publicize specifics individual meets well vehicle created assume rule area communicator became still CIA Informer effort has now become nealy automatic No sooner has last area outdoor Free Flight contest season accomplished midOctober year work instigated attempt subsequent seasons complete contest calendar time Santa Claus now tradi tion find complete tn-AMA-district Free Flight contest calendar subsequent flying season appearing pages Informers initial yearly issue roles present Con test Coordinators above-mentioned AMA districts have thereby reduced rubber stamp operations complaints rare Mission accomplishedwith outcome re lated case some other areas country may seeking solutions similar situations CIA club itself formed 1973 remnants number Hoosier Free Flight clubssome defunct previous 15-20 years Communicating new local members rather simple just attend twice-a-month club meetings local airport meeting room keep abreast club area activities However word got around rather quickly about existence newly formed active Free Flight club mid-Indiana began receive inquiries money interested modelers wished contribute cause furthering area Free Flight activities though resided too far away attendE regular club meetings However would surely wish participate formal contest affairs new organization might manage spark Continued page 174 172Model Aviation SAFETY NEEDLE REMOTE NEEDLE VALVE ADJUSTER KEEPS YOUR FINGERS SAFE DISTANCE FROM THE PROP ALLOWS PERFECT NEEDLE ADJUSTMENT FOR EVERY FLIGHT PRECISION GEAR TRAIN MAKES IT EASY TO SET ENGINE FOR PEAK POWER LOCK CONTROL ALLOWS DESIRED DRAG ON ADJUSTER KNOB FROM LOOSE TO LOCKED COMPLETE WITH MOUNTING HARDWARE S ADAPTERS FOR BENT OR KNOB TYPE NEEDLES FOR19- lOt ENGINES PRICE 51201 550 MODEL PRODUCTS POST PAID P& BOX 4026 601 LEE ST CHECK OR MO DES PLAINES IL 60016 [ALREADY FLYINGY 1 BND NEW TRAINERS WITH RADIO I AND ENGINE INSTALLED-OnIyS300I FUTABA 4NLwI4S38 SERVOS I OTTS R/G PARADISE 80893542061 1660 KAUMANA Dr HILOHi 967201 MTL.S MET5LS 50051 4 ES PRECISIO5 I5ITRUMtRTI ___ COMPLETE CATE.0G 200 JOlla otass ciiiii U D9LS SW 2100 M SElso Road roofooO0 0000 45500 mpa513 3228502 WSRL5S SIOSeSO SCALE PHOOC SEEVICE 5CC 55570 55CC PLANS 3 views PHOTO-PACKS PLANS ENLARGING SASS EoIrgIns COS Catalog s3O0 SCALE PlANS end PROTO SERVICE 3205 Medsas Gecasabars Nc 27403 Phane 191512925235 iNo Called Therefore enable giving folks some thing return obvious support former again served communication tool club affairs subsequently grew stature addition constant stream design construction articles plus dash Hoosier humor sprinkled about flavoring rate seemed like recipe whats news respect Free Flight eastern Midwest current editor-in-chief Informer Moe Whittemore also doing double-duty 1987 serving club president Roger Lane Veep Meredith Chamberlain retain ing keys club strongbox Club interests run gauntlet Free Flight categories Indoor FAI evident such names membership roster four-time World Indoor Champ Jim Richmond current FAI Power team member Dale Mateer six issues newsletter published year go $450 domestic Canadian subscribers fullfledged CIA Agent status club member amounts $6 per year Well would believe time head out airport next club meeting So See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 Custom Racers/Berliner Continued page 76 Get idea Tsunami will hit 500 mph rumor has hit 490 mph test flight before Reno really advanced designs should able less course advance technology possible drawbacks thing builders cap abilities have different thresholds everyone possessingthe skilito build 225mph Formula plane can move 450- 500-mph speed range almost certainty least futuristic Unlimited will crash early test flight thats built-in risk machine meant racing Racing cars crash racing bicycles GeeBees crashed did hot Airacobras Mustangs Though danger men continue move forward push back horizons result isnt always instantly clear benefit Safety Net/Hicks Continued page 87 Should adjacent runway catch wandering models before get out hand would better put net further back toward spectator area decided try position about six feet spectators picnic tables point model would have dive almost straight hit onlookerand general safety rules obeyed no model would ever flying position could didnt think couldprotect against potential hazard anything else student just-soloed pilot model goes astray takeoff landing careens off runway head ing felt needed worry about havent subjected net des tructive testing have purposefully flown model just see would hold up As photos show however did load up 40-size model flying weight throw hard could net number times did net show absolutely no damage delight model simply slid down net ground much ruffled tail feather actual ac cident engine running net would likelihood stop engine winding up around prop could certainly expect broken prop plane might hang net might have small weaving job to mend net can imagine cheaper price pay what could otherwise lifethreatening situation call Mr Dave Beighley UPRR offices Omaha produced ordering information about net put touch its manufacturer Chase Bag Company Portland OR called spoke Mr J Dickey delighted hear new application product offered special ordering arrangement clubs may want assemble own safety net Simply send order check $2000 net desired Chase Bag Co PO Box 10192 Portland OR 97210 nets shipped FOB Port land Mark order Attention Mr Harry Gage Net nomenclature Chip net 12 x 64 ft paper woven mesh yellow coded Grande Ronde Bush Pilots express sincere appreciation Union Pacific Railroad its generosity Chase Bag Company making special shipping arrangements other clubs de siring own nets may better way protect ourselves against model aircraft accidentsbut until comes along ones winner doubt safety net going reduce AMA insurance premiums thing may sure club has serious accident things insurance carrier going examine greatest care evalu ating claim What measures did take before accident prevent kind tragedy will club answer Keith-Rider/Lidberg Continued page 93 turns will need bend prop hanger obtain down left thrust should help achieve non-stalling climb left fairly wide circles Work up maximum turns stages changing balance improve giide very small increments needed arrive appropriate number maximum turns take motor off plane wind until bursts use number turns less 10% practical limit motor long use winder unhook wind rear definitely recommended since 1000 turns takes long time wind hand Also use rubber lube prolong life motor give consistent results Bumblebee has built fairly light should have little trouble achiev ing flights about minute using winder remindedthe hard wayof just lightweight little planes recent afternoon first built last seen shipping out four-minute thermal So Id suggest putting name phone number plane safeguard interesting idiosyncrasy model approach max imum winds long body develops twist 174 Model Aviation
Edition: Model Aviation - 1987/08
Page Numbers: 70, 71, 171, 172, 174
Free Flight Duration Harry Murphy STATIONARY AUTO-STABS favorite contributing technical expert Gil Morris returns column month interesting ap proach installing effective auto-stab device competition Gas models has no strings attached Gil reports am forever trying new ways trimming models because think much learned area have thinking about some time recently set up 375-sq-in Toothpicks test worked well am refer ring no-moving-parts auto-stab noth ing pair 3/s-in-wide times 3-in-long strips cut aluminum beverage can supported off stab surface -in -long strips /6-in-sq pieces balsa rear kin strip crimped down approximate 150 angle first try see sketch procedure first trim new model glide hand Now try short power flight indicates loop tendencies requires con siderable right turn prevent possible looping apply no-moving-parts auto-stab strips trailing edge upper surface hori zontal stabilizer shown accompanying drawing Use two deflectorsone either side stab centerline about midway out will act like positive stab incidence under power affecting original hand-glide trim reason during power ve locity air moving over stab high enough stay attached top side stab airfoil deflected downward air pass ing under metal strips contrast during glide air velocity much lower air will separate upper stab surface thereby rendering deflectors ineffective Eureka advantages movable auto-stab its attendant headaches However should forewarned pos sible side effect using approach Theoret ically should velocity model increase great deal during glide very strong thermal air moving over top stab may reattach itself enough activate influence deflectors causing nose model drop some semblance dive situation Just serious possibility really am sure yet Well about straight-up climb strings levers multipurpose fuel cut off timers Sounds neat model crashes send complaints hate mail Gil Morris just work bergs latest Al Lidberg sent accompany ing photos latest addition growing stable Free Flight Scale sport flying model effortsa scaled-down 22-in Telco CO-2-powered pylon cutie called Frisco Kid name model strikes familiar note well should full-sized original design entry 1954 FAI World Champs held Long Island NY Al also relates noteworthy story associated origins subject 54 Champs entry seems going event designer fine-performing model regarded having excellent chance placing high competition however subsequently plagued engine overruns due incon sistent nature pneumatic timers state-of-the-art fuel cutoff mechanisms era timers operated regulating airflow out chamber containing spring-loaded pis ton Fuel oil dirt vibration plagued re liability devices carry-over then-fairly-recent days spark ignition systems Anyone has some experience types timing devices can testify inaccuracies aggravations Therefore common practice days purposely set timer few seconds short max engine run limit prevent overruns Obviously would place very good stead todays 70 Model Aviation Leo Sullivan picked up model garage sale Design unknown British maybe Larry Willis torches dethermalizer fuse Nostalgia Gasellgible Yo-Ho Wright Field OH Air Force Museum building background rebirth vintage 1 Oi RubberScale kit istypifled Enrique Walshs Wiley Post Model bipe 1 Murfs ME-i 09R Both Comet Models plans Thirties Forties modelerswho still active rememberthese kits Let us hearfrom critically-short-engine-run competitions Anyway Frisco Kid eventually chugged eleventh place its designer although disappointed went away purpose noted European competitors using reliable clockwork timers Subsequently bought some mechanical clockwork camera timers set about develop now-fabled Tick-Off brand mechanical timers name John Tatone initial venture beginning company still know today JTec Isnt interesting simple model airplane com petition fizzled provided turn suc cessful lifelong occupation contestant Al peddles plans instructions latest version Frisco Kid puny sum $3 postpaid addition offers some 30-odd plans other small CO-2 Rubber Scale Peanut Scale NoCal Scale profile fuselages designs too numerous list order Frisco Kid plans add additional dollar receive catalog includes picture description price offering Available plans range two five dollars cost including six-plan Peanut Scale packet $5 prepaid address AA Lidberg 614 E Fordham Tempe AZ 85283and tell him heard about service love recognition Turning 50 Minneapolis Model Aero Club MMAC will chalk up its fiftieth year exis tence year Founded 1937 has continually active over years aspects Free Flight modeling Power Rubber Glider Scale Indoor has also published fine club newsletter since 1959 Two special occasions being planned mark golden anniversary year First two-day Free Flight contest scheduled weekend August 8-9 1987 Blame MN contest site on-the-field-barbeque feast slated Saturday evening Watch Contest Calendar Model Aviation contest event details Second Fiftieth Anniversary Banquet being planned September/October time-frame Specifics event will forthcoming MMAC firmed up insure fine turnout mark occasion renew old friendships MMAC wishing alert former club members friends about two events Additional info regard may obtained contacting club spokesman Dan Spehn 3618 72nd Ave N Brooklyn Center MN 55429 phone number 612 561-6508 Congratulations first 50 MMAC hope next 50 years will just mem orable Getting 10 worth Just mod eler age group initial infatuation model aviation came through early teenage adven tures l0 flying model kit readily available local five-and-dime stores period Comet Megow Joe Ott Hi-Flyer few brand names remember suppliers intriguing diminutive Stand off Scale stick-and-tissue flying model construc tion kits then-popular commercial military full-scale aircraft Continued page 171 Al Lldbergs CO-2-powered downsized 22-in span version Frisco Kid FAi Power modei Fifties Motor Teico unit August1987 71 Fantastic Youve got read about idea column An automatic nomoving-parts auto-stab VIT Vi utes came down field about charge too Cessna spans just under 24 weighs about /2 oz all-up Well gang keep crankin work Peace Bill Warner 423C San Vicente Blvd Santa Monica CA 90402 FF Duration/Murphy Continued page 71 no learned person about aid proper model construction techniques flight trimming models themselves trial-and-error self-teach method along lines build crash repairfollowed subsequent rebuilds additional crashes numerable repairs etc though thrill watching crudely built models take wing may have lasted no few seconds best creating flight certainly intriguing normal flight scenario began finger-wound rubberband loop cut old inner tube energy quickly spent causing models zoom nose up climaxed ultimate stall followed various crash modes early fruits labor being un successful flying department have since wondered what kept fascinated building more Surely real aircraft flew much better miniaturized like nesses obviously much leam about science flying model aeroplanes no TV few formal community youth activities days however weeklong entertainment contained constructing contents colorful cardboard cartonsand dime What better way away evening hours listen ing Lone Ranger Sky King radiu same time Yeah about Captain Afidnight Terry Pirates Jack Arm strong too RMcM I Send SSAt cataint sheet complete line PAW DIESELS Englands Finest 049 35 R/C STD Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 MACHINE SHOP SUPPLIES ING MACHINES LATHtS BLUEAiDEF TOOLS EO/ MACHINERY AND tOOlS INCFOr CIte IAviation I0Modeler POE. 536Y iceno WV 25620 623538 Corel8 nine UNIMAT 3 FREE dni cheek lie SPECIAL FREE feeight FEEE &Iee beN Save Over e90ee Eventually acquired first gasoline engine model construction stretched weeks instead days subsequent crashes disastrous repairs took much longer former interest log kits ceased rather abruptly progress can destroy sublime now club newsletter recently adopted policy run occasional full-size centerfold some old 10-centers complete paper copy original printwood Ah miracle handy copier machines Soon began receive reports some readers actually beginning build fly things Requests us publish followed along requests specific designs TV reruns must really getting boringright Anyway what followed always seems Inevi table Free Flight get two modelers gether building similar type model what results phenomenon call competition takes two declare contest race Interest event currently such two area contests have scheduled lOg Scale concept event cards 87 summer outdoor flying season also understand con cept has picked up other areas country formal competition being added outdoor contest event schedules some locales well years major Free Flight interests have primarily confined Gas-powered categories comply club project build another Comet 10-center after sand passed through glass personally ac cepted major challenge Egads parts certainly dinky didnt wear glasses teenager now wear trifocals just getting proper focus teeny-weeny cutout parts took some getting used Some other incidental differences brought about during 40-year interim might also worth mentioning readers may have aspirations taking lOg project selves Indoor addict used such endeavors following may somewhat redundant bat have recently existing steady diet big iron like have maybe some following can somewhat ease shock First have choose umpteen design candidates lOg category may take since over 50 designs carried Comet Model Airplane Com pany logo alone probably number sources can obtain plan copies few John Pond Old Time Plan Service 4269 Syoko Circle San Jose CA 95136 offers probably largest listing choose plans run about $275 plus 20% postage should also toss another $150 request latest two-part catalog listing Old-Timer Flying Scale plans makes available Jack Fikes Scale Flight Model Company 630 Fairway Lane Bloomington IN 47401 makes easier get started offers plans limited number Comet 10-cen ters $2 will send appropriate printwood additional $2or whole kit cases $695 Toss $2 kit satisfy US Postal Service charges Add another 75g additional kit might order Finally Don Belote 1834 Brame Place ledo OH 43613 peddling both plan matching paper copy printwood sog number designs out Swap Shop Toledo RC Show last spring might wish drop him SASE inquire what particular designs has available total mail order cost point have surely noticed going have lot lOg invested project personal construction choice Comet Messerschmidt ME 109 began just plans copy paper copy printwood past have some degree luck transfer ring ink copier machine item paper sheet balsa hot-iron method simply rubbing dope thinner back side paper locating ink side face-down balsa sheet However time simply sprayed back paper template copy 3M Spray Mount art paper adhesive comes aerosol can will instantaneously adhere template copy wood will also remain tacky enough days enable pulling off template after part has properly cut out method also serves another purpose added paper backing balsa less chance cracking out pesky little bits part razor blade youre cutting out chief offenders contrary with-the-grain portions between close-together notches tiny fuselage former Since intending ME 109 outdoor flying /6-in-sq stock required would have rather hard sturdy found some appro priate 36-in lengths local hobby shop lOg Also picked up special package 50 18-in lengths Micro-X booth Toledo purpose packet plus packet Japanese tissue 1 have some green tissue make model look authentic cause another $9 expenditure addition $195 bottle CyA cement going make construction piece cake comparison what 5g tube acetate-base model cement ages past Are keeping running account expenditures required August1987 171 Flight Boxes ransmitter Trays information send SASE Triple R Contractors Wood Products Division 6310 SW 172 Ave ft Lauderdale Fl 33331 call 305-434-8338 434-8446 construct lOg model other hand lot things going Obviously acquired some semblance construction expertise over years CyA godsend sandpaper since introduced nitrate dope great improvement over flour-and-water paste adhere covering structures loop A-in Sig rubber held distinct advantages over slices old inner tubes note old inner tubes also now extinct readymade plastic prop sure practical time-saver sum total efforts emerged 16-in replica ME 109ready simulated bat tle skies over Europe once again NORTH AMERICAN AIRCRAFT MUSEUM GUIDE WhoWhatWhere--- 1987 Edition MORE $975 US Postage Paid Cheeks MOs BrucelBeeson Publishers 2428 East 56th Place Tulsa OK 74105 CA MASK CA glue works wonders building models right Unfortunately gives enouh fumes knock vulture off carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumes soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs Pelican Enterprises Inc 265 OXFORD LANE BLOOMINGDALE ILLINOIS 60108 P S Send catalog mode/ers supplies summary progress made building ma terials techniques has definitely improved point good old days look good once did yes certainly received 10-cents-worth jollies scratchbuilding lOg ME 109 However believe next project will new Class D Gas job insteadas figure can end up lot model about same money Meanwhile Tally Ho chaps Theres ME 109 coming Out sun nine oclock Newsletter spotlight suppose good time single out personal club affili ation thereby utilizing minimum can dlepower beam next unsuspecting subject Free Flight club newsletterthe CIA former Central Indiana Aeromodelers Nat urally have soft spot grass-roots rag since must admit being its creator back early winter months 1974 having its editor largest chunk ensuing 13 years reasons its origins little unique some respects initial issues came about result attempting rectify some basic needs then-fledgling Free Flight club trying establish foothold AMAs confusing Free Flight contest-scheduling re gions upper northeast corner Indiana stake driven ground peculiarity stake simply walk around once have traveled through sovereign states Indiana Michigan Ohio Un fortunately will have also passed through AMA districts 3W 6 7 well districts contains close-in hotbed Free Flight contest activities pursued clubs must ac complish annual outdoor contest schedules within approximate five-months time-span good contest weather time AMA Contest Coordinators three districts having considerable difficulty communicating resolving constant contest conflict using cumbersome AMA coordinating setup exchang ing postcards etc know because per sonally serving District VI Contest Coordi nator days until began work directly contest-sponsoring club three AMA districts HOBBY D outdated 4 old ard older basic RC systems can easily update adding dual rates mixing extra channels frequency changes etc need basic electrical ability snd simple tools Written R/C tech 10 yrs exp 142 page journal includes sources diagrams charts detailed modifications written simple under standable text send $1995 check money order HOIST RADIO 3001-A Kavanaugh Rd Wilson NC 27893 Phone 919 291-8548 Hobby Radio also offers professional R/C repairs mods complete systems service battery pack servos vibration testing new frequency change etc manu facturer repairs guaranteed performed minimal turnaround Send sase price list complete services specific requests club pinpoint desired contest dates months ahead time did problems begin dissolve took con siderable communication date-juggling before workable calm settled areas contest scene Agreeing contest dates mat ter needed improvement recognized some type single-point vehicle needed distributing information such annual con test calendar unforeseen last-minute revi sions planned meets felt advan tageous publicize specifics individual meets well vehicle created assume rule area communicator became still CIA Informer effort has now become nealy automatic No sooner has last area outdoor Free Flight contest season accomplished midOctober year work instigated attempt subsequent seasons complete contest calendar time Santa Claus now tradi tion find complete tn-AMA-district Free Flight contest calendar subsequent flying season appearing pages Informers initial yearly issue roles present Con test Coordinators above-mentioned AMA districts have thereby reduced rubber stamp operations complaints rare Mission accomplishedwith outcome re lated case some other areas country may seeking solutions similar situations CIA club itself formed 1973 remnants number Hoosier Free Flight clubssome defunct previous 15-20 years Communicating new local members rather simple just attend twice-a-month club meetings local airport meeting room keep abreast club area activities However word got around rather quickly about existence newly formed active Free Flight club mid-Indiana began receive inquiries money interested modelers wished contribute cause furthering area Free Flight activities though resided too far away attendE regular club meetings However would surely wish participate formal contest affairs new organization might manage spark Continued page 174 172Model Aviation SAFETY NEEDLE REMOTE NEEDLE VALVE ADJUSTER KEEPS YOUR FINGERS SAFE DISTANCE FROM THE PROP ALLOWS PERFECT NEEDLE ADJUSTMENT FOR EVERY FLIGHT PRECISION GEAR TRAIN MAKES IT EASY TO SET ENGINE FOR PEAK POWER LOCK CONTROL ALLOWS DESIRED DRAG ON ADJUSTER KNOB FROM LOOSE TO LOCKED COMPLETE WITH MOUNTING HARDWARE S ADAPTERS FOR BENT OR KNOB TYPE NEEDLES FOR19- lOt ENGINES PRICE 51201 550 MODEL PRODUCTS POST PAID P& BOX 4026 601 LEE ST CHECK OR MO DES PLAINES IL 60016 [ALREADY FLYINGY 1 BND NEW TRAINERS WITH RADIO I AND ENGINE INSTALLED-OnIyS300I FUTABA 4NLwI4S38 SERVOS I OTTS R/G PARADISE 80893542061 1660 KAUMANA Dr HILOHi 967201 MTL.S MET5LS 50051 4 ES PRECISIO5 I5ITRUMtRTI ___ COMPLETE CATE.0G 200 JOlla otass ciiiii U D9LS SW 2100 M SElso Road roofooO0 0000 45500 mpa513 3228502 WSRL5S SIOSeSO SCALE PHOOC SEEVICE 5CC 55570 55CC PLANS 3 views PHOTO-PACKS PLANS ENLARGING SASS EoIrgIns COS Catalog s3O0 SCALE PlANS end PROTO SERVICE 3205 Medsas Gecasabars Nc 27403 Phane 191512925235 iNo Called Therefore enable giving folks some thing return obvious support former again served communication tool club affairs subsequently grew stature addition constant stream design construction articles plus dash Hoosier humor sprinkled about flavoring rate seemed like recipe whats news respect Free Flight eastern Midwest current editor-in-chief Informer Moe Whittemore also doing double-duty 1987 serving club president Roger Lane Veep Meredith Chamberlain retain ing keys club strongbox Club interests run gauntlet Free Flight categories Indoor FAI evident such names membership roster four-time World Indoor Champ Jim Richmond current FAI Power team member Dale Mateer six issues newsletter published year go $450 domestic Canadian subscribers fullfledged CIA Agent status club member amounts $6 per year Well would believe time head out airport next club meeting So See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 Custom Racers/Berliner Continued page 76 Get idea Tsunami will hit 500 mph rumor has hit 490 mph test flight before Reno really advanced designs should able less course advance technology possible drawbacks thing builders cap abilities have different thresholds everyone possessingthe skilito build 225mph Formula plane can move 450- 500-mph speed range almost certainty least futuristic Unlimited will crash early test flight thats built-in risk machine meant racing Racing cars crash racing bicycles GeeBees crashed did hot Airacobras Mustangs Though danger men continue move forward push back horizons result isnt always instantly clear benefit Safety Net/Hicks Continued page 87 Should adjacent runway catch wandering models before get out hand would better put net further back toward spectator area decided try position about six feet spectators picnic tables point model would have dive almost straight hit onlookerand general safety rules obeyed no model would ever flying position could didnt think couldprotect against potential hazard anything else student just-soloed pilot model goes astray takeoff landing careens off runway head ing felt needed worry about havent subjected net des tructive testing have purposefully flown model just see would hold up As photos show however did load up 40-size model flying weight throw hard could net number times did net show absolutely no damage delight model simply slid down net ground much ruffled tail feather actual ac cident engine running net would likelihood stop engine winding up around prop could certainly expect broken prop plane might hang net might have small weaving job to mend net can imagine cheaper price pay what could otherwise lifethreatening situation call Mr Dave Beighley UPRR offices Omaha produced ordering information about net put touch its manufacturer Chase Bag Company Portland OR called spoke Mr J Dickey delighted hear new application product offered special ordering arrangement clubs may want assemble own safety net Simply send order check $2000 net desired Chase Bag Co PO Box 10192 Portland OR 97210 nets shipped FOB Port land Mark order Attention Mr Harry Gage Net nomenclature Chip net 12 x 64 ft paper woven mesh yellow coded Grande Ronde Bush Pilots express sincere appreciation Union Pacific Railroad its generosity Chase Bag Company making special shipping arrangements other clubs de siring own nets may better way protect ourselves against model aircraft accidentsbut until comes along ones winner doubt safety net going reduce AMA insurance premiums thing may sure club has serious accident things insurance carrier going examine greatest care evalu ating claim What measures did take before accident prevent kind tragedy will club answer Keith-Rider/Lidberg Continued page 93 turns will need bend prop hanger obtain down left thrust should help achieve non-stalling climb left fairly wide circles Work up maximum turns stages changing balance improve giide very small increments needed arrive appropriate number maximum turns take motor off plane wind until bursts use number turns less 10% practical limit motor long use winder unhook wind rear definitely recommended since 1000 turns takes long time wind hand Also use rubber lube prolong life motor give consistent results Bumblebee has built fairly light should have little trouble achiev ing flights about minute using winder remindedthe hard wayof just lightweight little planes recent afternoon first built last seen shipping out four-minute thermal So Id suggest putting name phone number plane safeguard interesting idiosyncrasy model approach max imum winds long body develops twist 174 Model Aviation
Edition: Model Aviation - 1987/08
Page Numbers: 70, 71, 171, 172, 174
Free Flight Duration Harry Murphy STATIONARY AUTO-STABS favorite contributing technical expert Gil Morris returns column month interesting ap proach installing effective auto-stab device competition Gas models has no strings attached Gil reports am forever trying new ways trimming models because think much learned area have thinking about some time recently set up 375-sq-in Toothpicks test worked well am refer ring no-moving-parts auto-stab noth ing pair 3/s-in-wide times 3-in-long strips cut aluminum beverage can supported off stab surface -in -long strips /6-in-sq pieces balsa rear kin strip crimped down approximate 150 angle first try see sketch procedure first trim new model glide hand Now try short power flight indicates loop tendencies requires con siderable right turn prevent possible looping apply no-moving-parts auto-stab strips trailing edge upper surface hori zontal stabilizer shown accompanying drawing Use two deflectorsone either side stab centerline about midway out will act like positive stab incidence under power affecting original hand-glide trim reason during power ve locity air moving over stab high enough stay attached top side stab airfoil deflected downward air pass ing under metal strips contrast during glide air velocity much lower air will separate upper stab surface thereby rendering deflectors ineffective Eureka advantages movable auto-stab its attendant headaches However should forewarned pos sible side effect using approach Theoret ically should velocity model increase great deal during glide very strong thermal air moving over top stab may reattach itself enough activate influence deflectors causing nose model drop some semblance dive situation Just serious possibility really am sure yet Well about straight-up climb strings levers multipurpose fuel cut off timers Sounds neat model crashes send complaints hate mail Gil Morris just work bergs latest Al Lidberg sent accompany ing photos latest addition growing stable Free Flight Scale sport flying model effortsa scaled-down 22-in Telco CO-2-powered pylon cutie called Frisco Kid name model strikes familiar note well should full-sized original design entry 1954 FAI World Champs held Long Island NY Al also relates noteworthy story associated origins subject 54 Champs entry seems going event designer fine-performing model regarded having excellent chance placing high competition however subsequently plagued engine overruns due incon sistent nature pneumatic timers state-of-the-art fuel cutoff mechanisms era timers operated regulating airflow out chamber containing spring-loaded pis ton Fuel oil dirt vibration plagued re liability devices carry-over then-fairly-recent days spark ignition systems Anyone has some experience types timing devices can testify inaccuracies aggravations Therefore common practice days purposely set timer few seconds short max engine run limit prevent overruns Obviously would place very good stead todays 70 Model Aviation Leo Sullivan picked up model garage sale Design unknown British maybe Larry Willis torches dethermalizer fuse Nostalgia Gasellgible Yo-Ho Wright Field OH Air Force Museum building background rebirth vintage 1 Oi RubberScale kit istypifled Enrique Walshs Wiley Post Model bipe 1 Murfs ME-i 09R Both Comet Models plans Thirties Forties modelerswho still active rememberthese kits Let us hearfrom critically-short-engine-run competitions Anyway Frisco Kid eventually chugged eleventh place its designer although disappointed went away purpose noted European competitors using reliable clockwork timers Subsequently bought some mechanical clockwork camera timers set about develop now-fabled Tick-Off brand mechanical timers name John Tatone initial venture beginning company still know today JTec Isnt interesting simple model airplane com petition fizzled provided turn suc cessful lifelong occupation contestant Al peddles plans instructions latest version Frisco Kid puny sum $3 postpaid addition offers some 30-odd plans other small CO-2 Rubber Scale Peanut Scale NoCal Scale profile fuselages designs too numerous list order Frisco Kid plans add additional dollar receive catalog includes picture description price offering Available plans range two five dollars cost including six-plan Peanut Scale packet $5 prepaid address AA Lidberg 614 E Fordham Tempe AZ 85283and tell him heard about service love recognition Turning 50 Minneapolis Model Aero Club MMAC will chalk up its fiftieth year exis tence year Founded 1937 has continually active over years aspects Free Flight modeling Power Rubber Glider Scale Indoor has also published fine club newsletter since 1959 Two special occasions being planned mark golden anniversary year First two-day Free Flight contest scheduled weekend August 8-9 1987 Blame MN contest site on-the-field-barbeque feast slated Saturday evening Watch Contest Calendar Model Aviation contest event details Second Fiftieth Anniversary Banquet being planned September/October time-frame Specifics event will forthcoming MMAC firmed up insure fine turnout mark occasion renew old friendships MMAC wishing alert former club members friends about two events Additional info regard may obtained contacting club spokesman Dan Spehn 3618 72nd Ave N Brooklyn Center MN 55429 phone number 612 561-6508 Congratulations first 50 MMAC hope next 50 years will just mem orable Getting 10 worth Just mod eler age group initial infatuation model aviation came through early teenage adven tures l0 flying model kit readily available local five-and-dime stores period Comet Megow Joe Ott Hi-Flyer few brand names remember suppliers intriguing diminutive Stand off Scale stick-and-tissue flying model construc tion kits then-popular commercial military full-scale aircraft Continued page 171 Al Lldbergs CO-2-powered downsized 22-in span version Frisco Kid FAi Power modei Fifties Motor Teico unit August1987 71 Fantastic Youve got read about idea column An automatic nomoving-parts auto-stab VIT Vi utes came down field about charge too Cessna spans just under 24 weighs about /2 oz all-up Well gang keep crankin work Peace Bill Warner 423C San Vicente Blvd Santa Monica CA 90402 FF Duration/Murphy Continued page 71 no learned person about aid proper model construction techniques flight trimming models themselves trial-and-error self-teach method along lines build crash repairfollowed subsequent rebuilds additional crashes numerable repairs etc though thrill watching crudely built models take wing may have lasted no few seconds best creating flight certainly intriguing normal flight scenario began finger-wound rubberband loop cut old inner tube energy quickly spent causing models zoom nose up climaxed ultimate stall followed various crash modes early fruits labor being un successful flying department have since wondered what kept fascinated building more Surely real aircraft flew much better miniaturized like nesses obviously much leam about science flying model aeroplanes no TV few formal community youth activities days however weeklong entertainment contained constructing contents colorful cardboard cartonsand dime What better way away evening hours listen ing Lone Ranger Sky King radiu same time Yeah about Captain Afidnight Terry Pirates Jack Arm strong too RMcM I Send SSAt cataint sheet complete line PAW DIESELS Englands Finest 049 35 R/C STD Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 MACHINE SHOP SUPPLIES ING MACHINES LATHtS BLUEAiDEF TOOLS EO/ MACHINERY AND tOOlS INCFOr CIte IAviation I0Modeler POE. 536Y iceno WV 25620 623538 Corel8 nine UNIMAT 3 FREE dni cheek lie SPECIAL FREE feeight FEEE &Iee beN Save Over e90ee Eventually acquired first gasoline engine model construction stretched weeks instead days subsequent crashes disastrous repairs took much longer former interest log kits ceased rather abruptly progress can destroy sublime now club newsletter recently adopted policy run occasional full-size centerfold some old 10-centers complete paper copy original printwood Ah miracle handy copier machines Soon began receive reports some readers actually beginning build fly things Requests us publish followed along requests specific designs TV reruns must really getting boringright Anyway what followed always seems Inevi table Free Flight get two modelers gether building similar type model what results phenomenon call competition takes two declare contest race Interest event currently such two area contests have scheduled lOg Scale concept event cards 87 summer outdoor flying season also understand con cept has picked up other areas country formal competition being added outdoor contest event schedules some locales well years major Free Flight interests have primarily confined Gas-powered categories comply club project build another Comet 10-center after sand passed through glass personally ac cepted major challenge Egads parts certainly dinky didnt wear glasses teenager now wear trifocals just getting proper focus teeny-weeny cutout parts took some getting used Some other incidental differences brought about during 40-year interim might also worth mentioning readers may have aspirations taking lOg project selves Indoor addict used such endeavors following may somewhat redundant bat have recently existing steady diet big iron like have maybe some following can somewhat ease shock First have choose umpteen design candidates lOg category may take since over 50 designs carried Comet Model Airplane Com pany logo alone probably number sources can obtain plan copies few John Pond Old Time Plan Service 4269 Syoko Circle San Jose CA 95136 offers probably largest listing choose plans run about $275 plus 20% postage should also toss another $150 request latest two-part catalog listing Old-Timer Flying Scale plans makes available Jack Fikes Scale Flight Model Company 630 Fairway Lane Bloomington IN 47401 makes easier get started offers plans limited number Comet 10-cen ters $2 will send appropriate printwood additional $2or whole kit cases $695 Toss $2 kit satisfy US Postal Service charges Add another 75g additional kit might order Finally Don Belote 1834 Brame Place ledo OH 43613 peddling both plan matching paper copy printwood sog number designs out Swap Shop Toledo RC Show last spring might wish drop him SASE inquire what particular designs has available total mail order cost point have surely noticed going have lot lOg invested project personal construction choice Comet Messerschmidt ME 109 began just plans copy paper copy printwood past have some degree luck transfer ring ink copier machine item paper sheet balsa hot-iron method simply rubbing dope thinner back side paper locating ink side face-down balsa sheet However time simply sprayed back paper template copy 3M Spray Mount art paper adhesive comes aerosol can will instantaneously adhere template copy wood will also remain tacky enough days enable pulling off template after part has properly cut out method also serves another purpose added paper backing balsa less chance cracking out pesky little bits part razor blade youre cutting out chief offenders contrary with-the-grain portions between close-together notches tiny fuselage former Since intending ME 109 outdoor flying /6-in-sq stock required would have rather hard sturdy found some appro priate 36-in lengths local hobby shop lOg Also picked up special package 50 18-in lengths Micro-X booth Toledo purpose packet plus packet Japanese tissue 1 have some green tissue make model look authentic cause another $9 expenditure addition $195 bottle CyA cement going make construction piece cake comparison what 5g tube acetate-base model cement ages past Are keeping running account expenditures required August1987 171 Flight Boxes ransmitter Trays information send SASE Triple R Contractors Wood Products Division 6310 SW 172 Ave ft Lauderdale Fl 33331 call 305-434-8338 434-8446 construct lOg model other hand lot things going Obviously acquired some semblance construction expertise over years CyA godsend sandpaper since introduced nitrate dope great improvement over flour-and-water paste adhere covering structures loop A-in Sig rubber held distinct advantages over slices old inner tubes note old inner tubes also now extinct readymade plastic prop sure practical time-saver sum total efforts emerged 16-in replica ME 109ready simulated bat tle skies over Europe once again NORTH AMERICAN AIRCRAFT MUSEUM GUIDE WhoWhatWhere--- 1987 Edition MORE $975 US Postage Paid Cheeks MOs BrucelBeeson Publishers 2428 East 56th Place Tulsa OK 74105 CA MASK CA glue works wonders building models right Unfortunately gives enouh fumes knock vulture off carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumes soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs Pelican Enterprises Inc 265 OXFORD LANE BLOOMINGDALE ILLINOIS 60108 P S Send catalog mode/ers supplies summary progress made building ma terials techniques has definitely improved point good old days look good once did yes certainly received 10-cents-worth jollies scratchbuilding lOg ME 109 However believe next project will new Class D Gas job insteadas figure can end up lot model about same money Meanwhile Tally Ho chaps Theres ME 109 coming Out sun nine oclock Newsletter spotlight suppose good time single out personal club affili ation thereby utilizing minimum can dlepower beam next unsuspecting subject Free Flight club newsletterthe CIA former Central Indiana Aeromodelers Nat urally have soft spot grass-roots rag since must admit being its creator back early winter months 1974 having its editor largest chunk ensuing 13 years reasons its origins little unique some respects initial issues came about result attempting rectify some basic needs then-fledgling Free Flight club trying establish foothold AMAs confusing Free Flight contest-scheduling re gions upper northeast corner Indiana stake driven ground peculiarity stake simply walk around once have traveled through sovereign states Indiana Michigan Ohio Un fortunately will have also passed through AMA districts 3W 6 7 well districts contains close-in hotbed Free Flight contest activities pursued clubs must ac complish annual outdoor contest schedules within approximate five-months time-span good contest weather time AMA Contest Coordinators three districts having considerable difficulty communicating resolving constant contest conflict using cumbersome AMA coordinating setup exchang ing postcards etc know because per sonally serving District VI Contest Coordi nator days until began work directly contest-sponsoring club three AMA districts HOBBY D outdated 4 old ard older basic RC systems can easily update adding dual rates mixing extra channels frequency changes etc need basic electrical ability snd simple tools Written R/C tech 10 yrs exp 142 page journal includes sources diagrams charts detailed modifications written simple under standable text send $1995 check money order HOIST RADIO 3001-A Kavanaugh Rd Wilson NC 27893 Phone 919 291-8548 Hobby Radio also offers professional R/C repairs mods complete systems service battery pack servos vibration testing new frequency change etc manu facturer repairs guaranteed performed minimal turnaround Send sase price list complete services specific requests club pinpoint desired contest dates months ahead time did problems begin dissolve took con siderable communication date-juggling before workable calm settled areas contest scene Agreeing contest dates mat ter needed improvement recognized some type single-point vehicle needed distributing information such annual con test calendar unforeseen last-minute revi sions planned meets felt advan tageous publicize specifics individual meets well vehicle created assume rule area communicator became still CIA Informer effort has now become nealy automatic No sooner has last area outdoor Free Flight contest season accomplished midOctober year work instigated attempt subsequent seasons complete contest calendar time Santa Claus now tradi tion find complete tn-AMA-district Free Flight contest calendar subsequent flying season appearing pages Informers initial yearly issue roles present Con test Coordinators above-mentioned AMA districts have thereby reduced rubber stamp operations complaints rare Mission accomplishedwith outcome re lated case some other areas country may seeking solutions similar situations CIA club itself formed 1973 remnants number Hoosier Free Flight clubssome defunct previous 15-20 years Communicating new local members rather simple just attend twice-a-month club meetings local airport meeting room keep abreast club area activities However word got around rather quickly about existence newly formed active Free Flight club mid-Indiana began receive inquiries money interested modelers wished contribute cause furthering area Free Flight activities though resided too far away attendE regular club meetings However would surely wish participate formal contest affairs new organization might manage spark Continued page 174 172Model Aviation SAFETY NEEDLE REMOTE NEEDLE VALVE ADJUSTER KEEPS YOUR FINGERS SAFE DISTANCE FROM THE PROP ALLOWS PERFECT NEEDLE ADJUSTMENT FOR EVERY FLIGHT PRECISION GEAR TRAIN MAKES IT EASY TO SET ENGINE FOR PEAK POWER LOCK CONTROL ALLOWS DESIRED DRAG ON ADJUSTER KNOB FROM LOOSE TO LOCKED COMPLETE WITH MOUNTING HARDWARE S ADAPTERS FOR BENT OR KNOB TYPE NEEDLES FOR19- lOt ENGINES PRICE 51201 550 MODEL PRODUCTS POST PAID P& BOX 4026 601 LEE ST CHECK OR MO DES PLAINES IL 60016 [ALREADY FLYINGY 1 BND NEW TRAINERS WITH RADIO I AND ENGINE INSTALLED-OnIyS300I FUTABA 4NLwI4S38 SERVOS I OTTS R/G PARADISE 80893542061 1660 KAUMANA Dr HILOHi 967201 MTL.S MET5LS 50051 4 ES PRECISIO5 I5ITRUMtRTI ___ COMPLETE CATE.0G 200 JOlla otass ciiiii U D9LS SW 2100 M SElso Road roofooO0 0000 45500 mpa513 3228502 WSRL5S SIOSeSO SCALE PHOOC SEEVICE 5CC 55570 55CC PLANS 3 views PHOTO-PACKS PLANS ENLARGING SASS EoIrgIns COS Catalog s3O0 SCALE PlANS end PROTO SERVICE 3205 Medsas Gecasabars Nc 27403 Phane 191512925235 iNo Called Therefore enable giving folks some thing return obvious support former again served communication tool club affairs subsequently grew stature addition constant stream design construction articles plus dash Hoosier humor sprinkled about flavoring rate seemed like recipe whats news respect Free Flight eastern Midwest current editor-in-chief Informer Moe Whittemore also doing double-duty 1987 serving club president Roger Lane Veep Meredith Chamberlain retain ing keys club strongbox Club interests run gauntlet Free Flight categories Indoor FAI evident such names membership roster four-time World Indoor Champ Jim Richmond current FAI Power team member Dale Mateer six issues newsletter published year go $450 domestic Canadian subscribers fullfledged CIA Agent status club member amounts $6 per year Well would believe time head out airport next club meeting So See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 Custom Racers/Berliner Continued page 76 Get idea Tsunami will hit 500 mph rumor has hit 490 mph test flight before Reno really advanced designs should able less course advance technology possible drawbacks thing builders cap abilities have different thresholds everyone possessingthe skilito build 225mph Formula plane can move 450- 500-mph speed range almost certainty least futuristic Unlimited will crash early test flight thats built-in risk machine meant racing Racing cars crash racing bicycles GeeBees crashed did hot Airacobras Mustangs Though danger men continue move forward push back horizons result isnt always instantly clear benefit Safety Net/Hicks Continued page 87 Should adjacent runway catch wandering models before get out hand would better put net further back toward spectator area decided try position about six feet spectators picnic tables point model would have dive almost straight hit onlookerand general safety rules obeyed no model would ever flying position could didnt think couldprotect against potential hazard anything else student just-soloed pilot model goes astray takeoff landing careens off runway head ing felt needed worry about havent subjected net des tructive testing have purposefully flown model just see would hold up As photos show however did load up 40-size model flying weight throw hard could net number times did net show absolutely no damage delight model simply slid down net ground much ruffled tail feather actual ac cident engine running net would likelihood stop engine winding up around prop could certainly expect broken prop plane might hang net might have small weaving job to mend net can imagine cheaper price pay what could otherwise lifethreatening situation call Mr Dave Beighley UPRR offices Omaha produced ordering information about net put touch its manufacturer Chase Bag Company Portland OR called spoke Mr J Dickey delighted hear new application product offered special ordering arrangement clubs may want assemble own safety net Simply send order check $2000 net desired Chase Bag Co PO Box 10192 Portland OR 97210 nets shipped FOB Port land Mark order Attention Mr Harry Gage Net nomenclature Chip net 12 x 64 ft paper woven mesh yellow coded Grande Ronde Bush Pilots express sincere appreciation Union Pacific Railroad its generosity Chase Bag Company making special shipping arrangements other clubs de siring own nets may better way protect ourselves against model aircraft accidentsbut until comes along ones winner doubt safety net going reduce AMA insurance premiums thing may sure club has serious accident things insurance carrier going examine greatest care evalu ating claim What measures did take before accident prevent kind tragedy will club answer Keith-Rider/Lidberg Continued page 93 turns will need bend prop hanger obtain down left thrust should help achieve non-stalling climb left fairly wide circles Work up maximum turns stages changing balance improve giide very small increments needed arrive appropriate number maximum turns take motor off plane wind until bursts use number turns less 10% practical limit motor long use winder unhook wind rear definitely recommended since 1000 turns takes long time wind hand Also use rubber lube prolong life motor give consistent results Bumblebee has built fairly light should have little trouble achiev ing flights about minute using winder remindedthe hard wayof just lightweight little planes recent afternoon first built last seen shipping out four-minute thermal So Id suggest putting name phone number plane safeguard interesting idiosyncrasy model approach max imum winds long body develops twist 174 Model Aviation
Edition: Model Aviation - 1987/08
Page Numbers: 70, 71, 171, 172, 174
Free Flight Duration Harry Murphy STATIONARY AUTO-STABS favorite contributing technical expert Gil Morris returns column month interesting ap proach installing effective auto-stab device competition Gas models has no strings attached Gil reports am forever trying new ways trimming models because think much learned area have thinking about some time recently set up 375-sq-in Toothpicks test worked well am refer ring no-moving-parts auto-stab noth ing pair 3/s-in-wide times 3-in-long strips cut aluminum beverage can supported off stab surface -in -long strips /6-in-sq pieces balsa rear kin strip crimped down approximate 150 angle first try see sketch procedure first trim new model glide hand Now try short power flight indicates loop tendencies requires con siderable right turn prevent possible looping apply no-moving-parts auto-stab strips trailing edge upper surface hori zontal stabilizer shown accompanying drawing Use two deflectorsone either side stab centerline about midway out will act like positive stab incidence under power affecting original hand-glide trim reason during power ve locity air moving over stab high enough stay attached top side stab airfoil deflected downward air pass ing under metal strips contrast during glide air velocity much lower air will separate upper stab surface thereby rendering deflectors ineffective Eureka advantages movable auto-stab its attendant headaches However should forewarned pos sible side effect using approach Theoret ically should velocity model increase great deal during glide very strong thermal air moving over top stab may reattach itself enough activate influence deflectors causing nose model drop some semblance dive situation Just serious possibility really am sure yet Well about straight-up climb strings levers multipurpose fuel cut off timers Sounds neat model crashes send complaints hate mail Gil Morris just work bergs latest Al Lidberg sent accompany ing photos latest addition growing stable Free Flight Scale sport flying model effortsa scaled-down 22-in Telco CO-2-powered pylon cutie called Frisco Kid name model strikes familiar note well should full-sized original design entry 1954 FAI World Champs held Long Island NY Al also relates noteworthy story associated origins subject 54 Champs entry seems going event designer fine-performing model regarded having excellent chance placing high competition however subsequently plagued engine overruns due incon sistent nature pneumatic timers state-of-the-art fuel cutoff mechanisms era timers operated regulating airflow out chamber containing spring-loaded pis ton Fuel oil dirt vibration plagued re liability devices carry-over then-fairly-recent days spark ignition systems Anyone has some experience types timing devices can testify inaccuracies aggravations Therefore common practice days purposely set timer few seconds short max engine run limit prevent overruns Obviously would place very good stead todays 70 Model Aviation Leo Sullivan picked up model garage sale Design unknown British maybe Larry Willis torches dethermalizer fuse Nostalgia Gasellgible Yo-Ho Wright Field OH Air Force Museum building background rebirth vintage 1 Oi RubberScale kit istypifled Enrique Walshs Wiley Post Model bipe 1 Murfs ME-i 09R Both Comet Models plans Thirties Forties modelerswho still active rememberthese kits Let us hearfrom critically-short-engine-run competitions Anyway Frisco Kid eventually chugged eleventh place its designer although disappointed went away purpose noted European competitors using reliable clockwork timers Subsequently bought some mechanical clockwork camera timers set about develop now-fabled Tick-Off brand mechanical timers name John Tatone initial venture beginning company still know today JTec Isnt interesting simple model airplane com petition fizzled provided turn suc cessful lifelong occupation contestant Al peddles plans instructions latest version Frisco Kid puny sum $3 postpaid addition offers some 30-odd plans other small CO-2 Rubber Scale Peanut Scale NoCal Scale profile fuselages designs too numerous list order Frisco Kid plans add additional dollar receive catalog includes picture description price offering Available plans range two five dollars cost including six-plan Peanut Scale packet $5 prepaid address AA Lidberg 614 E Fordham Tempe AZ 85283and tell him heard about service love recognition Turning 50 Minneapolis Model Aero Club MMAC will chalk up its fiftieth year exis tence year Founded 1937 has continually active over years aspects Free Flight modeling Power Rubber Glider Scale Indoor has also published fine club newsletter since 1959 Two special occasions being planned mark golden anniversary year First two-day Free Flight contest scheduled weekend August 8-9 1987 Blame MN contest site on-the-field-barbeque feast slated Saturday evening Watch Contest Calendar Model Aviation contest event details Second Fiftieth Anniversary Banquet being planned September/October time-frame Specifics event will forthcoming MMAC firmed up insure fine turnout mark occasion renew old friendships MMAC wishing alert former club members friends about two events Additional info regard may obtained contacting club spokesman Dan Spehn 3618 72nd Ave N Brooklyn Center MN 55429 phone number 612 561-6508 Congratulations first 50 MMAC hope next 50 years will just mem orable Getting 10 worth Just mod eler age group initial infatuation model aviation came through early teenage adven tures l0 flying model kit readily available local five-and-dime stores period Comet Megow Joe Ott Hi-Flyer few brand names remember suppliers intriguing diminutive Stand off Scale stick-and-tissue flying model construc tion kits then-popular commercial military full-scale aircraft Continued page 171 Al Lldbergs CO-2-powered downsized 22-in span version Frisco Kid FAi Power modei Fifties Motor Teico unit August1987 71 Fantastic Youve got read about idea column An automatic nomoving-parts auto-stab VIT Vi utes came down field about charge too Cessna spans just under 24 weighs about /2 oz all-up Well gang keep crankin work Peace Bill Warner 423C San Vicente Blvd Santa Monica CA 90402 FF Duration/Murphy Continued page 71 no learned person about aid proper model construction techniques flight trimming models themselves trial-and-error self-teach method along lines build crash repairfollowed subsequent rebuilds additional crashes numerable repairs etc though thrill watching crudely built models take wing may have lasted no few seconds best creating flight certainly intriguing normal flight scenario began finger-wound rubberband loop cut old inner tube energy quickly spent causing models zoom nose up climaxed ultimate stall followed various crash modes early fruits labor being un successful flying department have since wondered what kept fascinated building more Surely real aircraft flew much better miniaturized like nesses obviously much leam about science flying model aeroplanes no TV few formal community youth activities days however weeklong entertainment contained constructing contents colorful cardboard cartonsand dime What better way away evening hours listen ing Lone Ranger Sky King radiu same time Yeah about Captain Afidnight Terry Pirates Jack Arm strong too RMcM I Send SSAt cataint sheet complete line PAW DIESELS Englands Finest 049 35 R/C STD Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 MACHINE SHOP SUPPLIES ING MACHINES LATHtS BLUEAiDEF TOOLS EO/ MACHINERY AND tOOlS INCFOr CIte IAviation I0Modeler POE. 536Y iceno WV 25620 623538 Corel8 nine UNIMAT 3 FREE dni cheek lie SPECIAL FREE feeight FEEE &Iee beN Save Over e90ee Eventually acquired first gasoline engine model construction stretched weeks instead days subsequent crashes disastrous repairs took much longer former interest log kits ceased rather abruptly progress can destroy sublime now club newsletter recently adopted policy run occasional full-size centerfold some old 10-centers complete paper copy original printwood Ah miracle handy copier machines Soon began receive reports some readers actually beginning build fly things Requests us publish followed along requests specific designs TV reruns must really getting boringright Anyway what followed always seems Inevi table Free Flight get two modelers gether building similar type model what results phenomenon call competition takes two declare contest race Interest event currently such two area contests have scheduled lOg Scale concept event cards 87 summer outdoor flying season also understand con cept has picked up other areas country formal competition being added outdoor contest event schedules some locales well years major Free Flight interests have primarily confined Gas-powered categories comply club project build another Comet 10-center after sand passed through glass personally ac cepted major challenge Egads parts certainly dinky didnt wear glasses teenager now wear trifocals just getting proper focus teeny-weeny cutout parts took some getting used Some other incidental differences brought about during 40-year interim might also worth mentioning readers may have aspirations taking lOg project selves Indoor addict used such endeavors following may somewhat redundant bat have recently existing steady diet big iron like have maybe some following can somewhat ease shock First have choose umpteen design candidates lOg category may take since over 50 designs carried Comet Model Airplane Com pany logo alone probably number sources can obtain plan copies few John Pond Old Time Plan Service 4269 Syoko Circle San Jose CA 95136 offers probably largest listing choose plans run about $275 plus 20% postage should also toss another $150 request latest two-part catalog listing Old-Timer Flying Scale plans makes available Jack Fikes Scale Flight Model Company 630 Fairway Lane Bloomington IN 47401 makes easier get started offers plans limited number Comet 10-cen ters $2 will send appropriate printwood additional $2or whole kit cases $695 Toss $2 kit satisfy US Postal Service charges Add another 75g additional kit might order Finally Don Belote 1834 Brame Place ledo OH 43613 peddling both plan matching paper copy printwood sog number designs out Swap Shop Toledo RC Show last spring might wish drop him SASE inquire what particular designs has available total mail order cost point have surely noticed going have lot lOg invested project personal construction choice Comet Messerschmidt ME 109 began just plans copy paper copy printwood past have some degree luck transfer ring ink copier machine item paper sheet balsa hot-iron method simply rubbing dope thinner back side paper locating ink side face-down balsa sheet However time simply sprayed back paper template copy 3M Spray Mount art paper adhesive comes aerosol can will instantaneously adhere template copy wood will also remain tacky enough days enable pulling off template after part has properly cut out method also serves another purpose added paper backing balsa less chance cracking out pesky little bits part razor blade youre cutting out chief offenders contrary with-the-grain portions between close-together notches tiny fuselage former Since intending ME 109 outdoor flying /6-in-sq stock required would have rather hard sturdy found some appro priate 36-in lengths local hobby shop lOg Also picked up special package 50 18-in lengths Micro-X booth Toledo purpose packet plus packet Japanese tissue 1 have some green tissue make model look authentic cause another $9 expenditure addition $195 bottle CyA cement going make construction piece cake comparison what 5g tube acetate-base model cement ages past Are keeping running account expenditures required August1987 171 Flight Boxes ransmitter Trays information send SASE Triple R Contractors Wood Products Division 6310 SW 172 Ave ft Lauderdale Fl 33331 call 305-434-8338 434-8446 construct lOg model other hand lot things going Obviously acquired some semblance construction expertise over years CyA godsend sandpaper since introduced nitrate dope great improvement over flour-and-water paste adhere covering structures loop A-in Sig rubber held distinct advantages over slices old inner tubes note old inner tubes also now extinct readymade plastic prop sure practical time-saver sum total efforts emerged 16-in replica ME 109ready simulated bat tle skies over Europe once again NORTH AMERICAN AIRCRAFT MUSEUM GUIDE WhoWhatWhere--- 1987 Edition MORE $975 US Postage Paid Cheeks MOs BrucelBeeson Publishers 2428 East 56th Place Tulsa OK 74105 CA MASK CA glue works wonders building models right Unfortunately gives enouh fumes knock vulture off carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumes soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs Pelican Enterprises Inc 265 OXFORD LANE BLOOMINGDALE ILLINOIS 60108 P S Send catalog mode/ers supplies summary progress made building ma terials techniques has definitely improved point good old days look good once did yes certainly received 10-cents-worth jollies scratchbuilding lOg ME 109 However believe next project will new Class D Gas job insteadas figure can end up lot model about same money Meanwhile Tally Ho chaps Theres ME 109 coming Out sun nine oclock Newsletter spotlight suppose good time single out personal club affili ation thereby utilizing minimum can dlepower beam next unsuspecting subject Free Flight club newsletterthe CIA former Central Indiana Aeromodelers Nat urally have soft spot grass-roots rag since must admit being its creator back early winter months 1974 having its editor largest chunk ensuing 13 years reasons its origins little unique some respects initial issues came about result attempting rectify some basic needs then-fledgling Free Flight club trying establish foothold AMAs confusing Free Flight contest-scheduling re gions upper northeast corner Indiana stake driven ground peculiarity stake simply walk around once have traveled through sovereign states Indiana Michigan Ohio Un fortunately will have also passed through AMA districts 3W 6 7 well districts contains close-in hotbed Free Flight contest activities pursued clubs must ac complish annual outdoor contest schedules within approximate five-months time-span good contest weather time AMA Contest Coordinators three districts having considerable difficulty communicating resolving constant contest conflict using cumbersome AMA coordinating setup exchang ing postcards etc know because per sonally serving District VI Contest Coordi nator days until began work directly contest-sponsoring club three AMA districts HOBBY D outdated 4 old ard older basic RC systems can easily update adding dual rates mixing extra channels frequency changes etc need basic electrical ability snd simple tools Written R/C tech 10 yrs exp 142 page journal includes sources diagrams charts detailed modifications written simple under standable text send $1995 check money order HOIST RADIO 3001-A Kavanaugh Rd Wilson NC 27893 Phone 919 291-8548 Hobby Radio also offers professional R/C repairs mods complete systems service battery pack servos vibration testing new frequency change etc manu facturer repairs guaranteed performed minimal turnaround Send sase price list complete services specific requests club pinpoint desired contest dates months ahead time did problems begin dissolve took con siderable communication date-juggling before workable calm settled areas contest scene Agreeing contest dates mat ter needed improvement recognized some type single-point vehicle needed distributing information such annual con test calendar unforeseen last-minute revi sions planned meets felt advan tageous publicize specifics individual meets well vehicle created assume rule area communicator became still CIA Informer effort has now become nealy automatic No sooner has last area outdoor Free Flight contest season accomplished midOctober year work instigated attempt subsequent seasons complete contest calendar time Santa Claus now tradi tion find complete tn-AMA-district Free Flight contest calendar subsequent flying season appearing pages Informers initial yearly issue roles present Con test Coordinators above-mentioned AMA districts have thereby reduced rubber stamp operations complaints rare Mission accomplishedwith outcome re lated case some other areas country may seeking solutions similar situations CIA club itself formed 1973 remnants number Hoosier Free Flight clubssome defunct previous 15-20 years Communicating new local members rather simple just attend twice-a-month club meetings local airport meeting room keep abreast club area activities However word got around rather quickly about existence newly formed active Free Flight club mid-Indiana began receive inquiries money interested modelers wished contribute cause furthering area Free Flight activities though resided too far away attendE regular club meetings However would surely wish participate formal contest affairs new organization might manage spark Continued page 174 172Model Aviation SAFETY NEEDLE REMOTE NEEDLE VALVE ADJUSTER KEEPS YOUR FINGERS SAFE DISTANCE FROM THE PROP ALLOWS PERFECT NEEDLE ADJUSTMENT FOR EVERY FLIGHT PRECISION GEAR TRAIN MAKES IT EASY TO SET ENGINE FOR PEAK POWER LOCK CONTROL ALLOWS DESIRED DRAG ON ADJUSTER KNOB FROM LOOSE TO LOCKED COMPLETE WITH MOUNTING HARDWARE S ADAPTERS FOR BENT OR KNOB TYPE NEEDLES FOR19- lOt ENGINES PRICE 51201 550 MODEL PRODUCTS POST PAID P& BOX 4026 601 LEE ST CHECK OR MO DES PLAINES IL 60016 [ALREADY FLYINGY 1 BND NEW TRAINERS WITH RADIO I AND ENGINE INSTALLED-OnIyS300I FUTABA 4NLwI4S38 SERVOS I OTTS R/G PARADISE 80893542061 1660 KAUMANA Dr HILOHi 967201 MTL.S MET5LS 50051 4 ES PRECISIO5 I5ITRUMtRTI ___ COMPLETE CATE.0G 200 JOlla otass ciiiii U D9LS SW 2100 M SElso Road roofooO0 0000 45500 mpa513 3228502 WSRL5S SIOSeSO SCALE PHOOC SEEVICE 5CC 55570 55CC PLANS 3 views PHOTO-PACKS PLANS ENLARGING SASS EoIrgIns COS Catalog s3O0 SCALE PlANS end PROTO SERVICE 3205 Medsas Gecasabars Nc 27403 Phane 191512925235 iNo Called Therefore enable giving folks some thing return obvious support former again served communication tool club affairs subsequently grew stature addition constant stream design construction articles plus dash Hoosier humor sprinkled about flavoring rate seemed like recipe whats news respect Free Flight eastern Midwest current editor-in-chief Informer Moe Whittemore also doing double-duty 1987 serving club president Roger Lane Veep Meredith Chamberlain retain ing keys club strongbox Club interests run gauntlet Free Flight categories Indoor FAI evident such names membership roster four-time World Indoor Champ Jim Richmond current FAI Power team member Dale Mateer six issues newsletter published year go $450 domestic Canadian subscribers fullfledged CIA Agent status club member amounts $6 per year Well would believe time head out airport next club meeting So See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 Custom Racers/Berliner Continued page 76 Get idea Tsunami will hit 500 mph rumor has hit 490 mph test flight before Reno really advanced designs should able less course advance technology possible drawbacks thing builders cap abilities have different thresholds everyone possessingthe skilito build 225mph Formula plane can move 450- 500-mph speed range almost certainty least futuristic Unlimited will crash early test flight thats built-in risk machine meant racing Racing cars crash racing bicycles GeeBees crashed did hot Airacobras Mustangs Though danger men continue move forward push back horizons result isnt always instantly clear benefit Safety Net/Hicks Continued page 87 Should adjacent runway catch wandering models before get out hand would better put net further back toward spectator area decided try position about six feet spectators picnic tables point model would have dive almost straight hit onlookerand general safety rules obeyed no model would ever flying position could didnt think couldprotect against potential hazard anything else student just-soloed pilot model goes astray takeoff landing careens off runway head ing felt needed worry about havent subjected net des tructive testing have purposefully flown model just see would hold up As photos show however did load up 40-size model flying weight throw hard could net number times did net show absolutely no damage delight model simply slid down net ground much ruffled tail feather actual ac cident engine running net would likelihood stop engine winding up around prop could certainly expect broken prop plane might hang net might have small weaving job to mend net can imagine cheaper price pay what could otherwise lifethreatening situation call Mr Dave Beighley UPRR offices Omaha produced ordering information about net put touch its manufacturer Chase Bag Company Portland OR called spoke Mr J Dickey delighted hear new application product offered special ordering arrangement clubs may want assemble own safety net Simply send order check $2000 net desired Chase Bag Co PO Box 10192 Portland OR 97210 nets shipped FOB Port land Mark order Attention Mr Harry Gage Net nomenclature Chip net 12 x 64 ft paper woven mesh yellow coded Grande Ronde Bush Pilots express sincere appreciation Union Pacific Railroad its generosity Chase Bag Company making special shipping arrangements other clubs de siring own nets may better way protect ourselves against model aircraft accidentsbut until comes along ones winner doubt safety net going reduce AMA insurance premiums thing may sure club has serious accident things insurance carrier going examine greatest care evalu ating claim What measures did take before accident prevent kind tragedy will club answer Keith-Rider/Lidberg Continued page 93 turns will need bend prop hanger obtain down left thrust should help achieve non-stalling climb left fairly wide circles Work up maximum turns stages changing balance improve giide very small increments needed arrive appropriate number maximum turns take motor off plane wind until bursts use number turns less 10% practical limit motor long use winder unhook wind rear definitely recommended since 1000 turns takes long time wind hand Also use rubber lube prolong life motor give consistent results Bumblebee has built fairly light should have little trouble achiev ing flights about minute using winder remindedthe hard wayof just lightweight little planes recent afternoon first built last seen shipping out four-minute thermal So Id suggest putting name phone number plane safeguard interesting idiosyncrasy model approach max imum winds long body develops twist 174 Model Aviation
Edition: Model Aviation - 1987/08
Page Numbers: 70, 71, 171, 172, 174
Free Flight Duration Harry Murphy STATIONARY AUTO-STABS favorite contributing technical expert Gil Morris returns column month interesting ap proach installing effective auto-stab device competition Gas models has no strings attached Gil reports am forever trying new ways trimming models because think much learned area have thinking about some time recently set up 375-sq-in Toothpicks test worked well am refer ring no-moving-parts auto-stab noth ing pair 3/s-in-wide times 3-in-long strips cut aluminum beverage can supported off stab surface -in -long strips /6-in-sq pieces balsa rear kin strip crimped down approximate 150 angle first try see sketch procedure first trim new model glide hand Now try short power flight indicates loop tendencies requires con siderable right turn prevent possible looping apply no-moving-parts auto-stab strips trailing edge upper surface hori zontal stabilizer shown accompanying drawing Use two deflectorsone either side stab centerline about midway out will act like positive stab incidence under power affecting original hand-glide trim reason during power ve locity air moving over stab high enough stay attached top side stab airfoil deflected downward air pass ing under metal strips contrast during glide air velocity much lower air will separate upper stab surface thereby rendering deflectors ineffective Eureka advantages movable auto-stab its attendant headaches However should forewarned pos sible side effect using approach Theoret ically should velocity model increase great deal during glide very strong thermal air moving over top stab may reattach itself enough activate influence deflectors causing nose model drop some semblance dive situation Just serious possibility really am sure yet Well about straight-up climb strings levers multipurpose fuel cut off timers Sounds neat model crashes send complaints hate mail Gil Morris just work bergs latest Al Lidberg sent accompany ing photos latest addition growing stable Free Flight Scale sport flying model effortsa scaled-down 22-in Telco CO-2-powered pylon cutie called Frisco Kid name model strikes familiar note well should full-sized original design entry 1954 FAI World Champs held Long Island NY Al also relates noteworthy story associated origins subject 54 Champs entry seems going event designer fine-performing model regarded having excellent chance placing high competition however subsequently plagued engine overruns due incon sistent nature pneumatic timers state-of-the-art fuel cutoff mechanisms era timers operated regulating airflow out chamber containing spring-loaded pis ton Fuel oil dirt vibration plagued re liability devices carry-over then-fairly-recent days spark ignition systems Anyone has some experience types timing devices can testify inaccuracies aggravations Therefore common practice days purposely set timer few seconds short max engine run limit prevent overruns Obviously would place very good stead todays 70 Model Aviation Leo Sullivan picked up model garage sale Design unknown British maybe Larry Willis torches dethermalizer fuse Nostalgia Gasellgible Yo-Ho Wright Field OH Air Force Museum building background rebirth vintage 1 Oi RubberScale kit istypifled Enrique Walshs Wiley Post Model bipe 1 Murfs ME-i 09R Both Comet Models plans Thirties Forties modelerswho still active rememberthese kits Let us hearfrom critically-short-engine-run competitions Anyway Frisco Kid eventually chugged eleventh place its designer although disappointed went away purpose noted European competitors using reliable clockwork timers Subsequently bought some mechanical clockwork camera timers set about develop now-fabled Tick-Off brand mechanical timers name John Tatone initial venture beginning company still know today JTec Isnt interesting simple model airplane com petition fizzled provided turn suc cessful lifelong occupation contestant Al peddles plans instructions latest version Frisco Kid puny sum $3 postpaid addition offers some 30-odd plans other small CO-2 Rubber Scale Peanut Scale NoCal Scale profile fuselages designs too numerous list order Frisco Kid plans add additional dollar receive catalog includes picture description price offering Available plans range two five dollars cost including six-plan Peanut Scale packet $5 prepaid address AA Lidberg 614 E Fordham Tempe AZ 85283and tell him heard about service love recognition Turning 50 Minneapolis Model Aero Club MMAC will chalk up its fiftieth year exis tence year Founded 1937 has continually active over years aspects Free Flight modeling Power Rubber Glider Scale Indoor has also published fine club newsletter since 1959 Two special occasions being planned mark golden anniversary year First two-day Free Flight contest scheduled weekend August 8-9 1987 Blame MN contest site on-the-field-barbeque feast slated Saturday evening Watch Contest Calendar Model Aviation contest event details Second Fiftieth Anniversary Banquet being planned September/October time-frame Specifics event will forthcoming MMAC firmed up insure fine turnout mark occasion renew old friendships MMAC wishing alert former club members friends about two events Additional info regard may obtained contacting club spokesman Dan Spehn 3618 72nd Ave N Brooklyn Center MN 55429 phone number 612 561-6508 Congratulations first 50 MMAC hope next 50 years will just mem orable Getting 10 worth Just mod eler age group initial infatuation model aviation came through early teenage adven tures l0 flying model kit readily available local five-and-dime stores period Comet Megow Joe Ott Hi-Flyer few brand names remember suppliers intriguing diminutive Stand off Scale stick-and-tissue flying model construc tion kits then-popular commercial military full-scale aircraft Continued page 171 Al Lldbergs CO-2-powered downsized 22-in span version Frisco Kid FAi Power modei Fifties Motor Teico unit August1987 71 Fantastic Youve got read about idea column An automatic nomoving-parts auto-stab VIT Vi utes came down field about charge too Cessna spans just under 24 weighs about /2 oz all-up Well gang keep crankin work Peace Bill Warner 423C San Vicente Blvd Santa Monica CA 90402 FF Duration/Murphy Continued page 71 no learned person about aid proper model construction techniques flight trimming models themselves trial-and-error self-teach method along lines build crash repairfollowed subsequent rebuilds additional crashes numerable repairs etc though thrill watching crudely built models take wing may have lasted no few seconds best creating flight certainly intriguing normal flight scenario began finger-wound rubberband loop cut old inner tube energy quickly spent causing models zoom nose up climaxed ultimate stall followed various crash modes early fruits labor being un successful flying department have since wondered what kept fascinated building more Surely real aircraft flew much better miniaturized like nesses obviously much leam about science flying model aeroplanes no TV few formal community youth activities days however weeklong entertainment contained constructing contents colorful cardboard cartonsand dime What better way away evening hours listen ing Lone Ranger Sky King radiu same time Yeah about Captain Afidnight Terry Pirates Jack Arm strong too RMcM I Send SSAt cataint sheet complete line PAW DIESELS Englands Finest 049 35 R/C STD Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 MACHINE SHOP SUPPLIES ING MACHINES LATHtS BLUEAiDEF TOOLS EO/ MACHINERY AND tOOlS INCFOr CIte IAviation I0Modeler POE. 536Y iceno WV 25620 623538 Corel8 nine UNIMAT 3 FREE dni cheek lie SPECIAL FREE feeight FEEE &Iee beN Save Over e90ee Eventually acquired first gasoline engine model construction stretched weeks instead days subsequent crashes disastrous repairs took much longer former interest log kits ceased rather abruptly progress can destroy sublime now club newsletter recently adopted policy run occasional full-size centerfold some old 10-centers complete paper copy original printwood Ah miracle handy copier machines Soon began receive reports some readers actually beginning build fly things Requests us publish followed along requests specific designs TV reruns must really getting boringright Anyway what followed always seems Inevi table Free Flight get two modelers gether building similar type model what results phenomenon call competition takes two declare contest race Interest event currently such two area contests have scheduled lOg Scale concept event cards 87 summer outdoor flying season also understand con cept has picked up other areas country formal competition being added outdoor contest event schedules some locales well years major Free Flight interests have primarily confined Gas-powered categories comply club project build another Comet 10-center after sand passed through glass personally ac cepted major challenge Egads parts certainly dinky didnt wear glasses teenager now wear trifocals just getting proper focus teeny-weeny cutout parts took some getting used Some other incidental differences brought about during 40-year interim might also worth mentioning readers may have aspirations taking lOg project selves Indoor addict used such endeavors following may somewhat redundant bat have recently existing steady diet big iron like have maybe some following can somewhat ease shock First have choose umpteen design candidates lOg category may take since over 50 designs carried Comet Model Airplane Com pany logo alone probably number sources can obtain plan copies few John Pond Old Time Plan Service 4269 Syoko Circle San Jose CA 95136 offers probably largest listing choose plans run about $275 plus 20% postage should also toss another $150 request latest two-part catalog listing Old-Timer Flying Scale plans makes available Jack Fikes Scale Flight Model Company 630 Fairway Lane Bloomington IN 47401 makes easier get started offers plans limited number Comet 10-cen ters $2 will send appropriate printwood additional $2or whole kit cases $695 Toss $2 kit satisfy US Postal Service charges Add another 75g additional kit might order Finally Don Belote 1834 Brame Place ledo OH 43613 peddling both plan matching paper copy printwood sog number designs out Swap Shop Toledo RC Show last spring might wish drop him SASE inquire what particular designs has available total mail order cost point have surely noticed going have lot lOg invested project personal construction choice Comet Messerschmidt ME 109 began just plans copy paper copy printwood past have some degree luck transfer ring ink copier machine item paper sheet balsa hot-iron method simply rubbing dope thinner back side paper locating ink side face-down balsa sheet However time simply sprayed back paper template copy 3M Spray Mount art paper adhesive comes aerosol can will instantaneously adhere template copy wood will also remain tacky enough days enable pulling off template after part has properly cut out method also serves another purpose added paper backing balsa less chance cracking out pesky little bits part razor blade youre cutting out chief offenders contrary with-the-grain portions between close-together notches tiny fuselage former Since intending ME 109 outdoor flying /6-in-sq stock required would have rather hard sturdy found some appro priate 36-in lengths local hobby shop lOg Also picked up special package 50 18-in lengths Micro-X booth Toledo purpose packet plus packet Japanese tissue 1 have some green tissue make model look authentic cause another $9 expenditure addition $195 bottle CyA cement going make construction piece cake comparison what 5g tube acetate-base model cement ages past Are keeping running account expenditures required August1987 171 Flight Boxes ransmitter Trays information send SASE Triple R Contractors Wood Products Division 6310 SW 172 Ave ft Lauderdale Fl 33331 call 305-434-8338 434-8446 construct lOg model other hand lot things going Obviously acquired some semblance construction expertise over years CyA godsend sandpaper since introduced nitrate dope great improvement over flour-and-water paste adhere covering structures loop A-in Sig rubber held distinct advantages over slices old inner tubes note old inner tubes also now extinct readymade plastic prop sure practical time-saver sum total efforts emerged 16-in replica ME 109ready simulated bat tle skies over Europe once again NORTH AMERICAN AIRCRAFT MUSEUM GUIDE WhoWhatWhere--- 1987 Edition MORE $975 US Postage Paid Cheeks MOs BrucelBeeson Publishers 2428 East 56th Place Tulsa OK 74105 CA MASK CA glue works wonders building models right Unfortunately gives enouh fumes knock vulture off carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumes soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs Pelican Enterprises Inc 265 OXFORD LANE BLOOMINGDALE ILLINOIS 60108 P S Send catalog mode/ers supplies summary progress made building ma terials techniques has definitely improved point good old days look good once did yes certainly received 10-cents-worth jollies scratchbuilding lOg ME 109 However believe next project will new Class D Gas job insteadas figure can end up lot model about same money Meanwhile Tally Ho chaps Theres ME 109 coming Out sun nine oclock Newsletter spotlight suppose good time single out personal club affili ation thereby utilizing minimum can dlepower beam next unsuspecting subject Free Flight club newsletterthe CIA former Central Indiana Aeromodelers Nat urally have soft spot grass-roots rag since must admit being its creator back early winter months 1974 having its editor largest chunk ensuing 13 years reasons its origins little unique some respects initial issues came about result attempting rectify some basic needs then-fledgling Free Flight club trying establish foothold AMAs confusing Free Flight contest-scheduling re gions upper northeast corner Indiana stake driven ground peculiarity stake simply walk around once have traveled through sovereign states Indiana Michigan Ohio Un fortunately will have also passed through AMA districts 3W 6 7 well districts contains close-in hotbed Free Flight contest activities pursued clubs must ac complish annual outdoor contest schedules within approximate five-months time-span good contest weather time AMA Contest Coordinators three districts having considerable difficulty communicating resolving constant contest conflict using cumbersome AMA coordinating setup exchang ing postcards etc know because per sonally serving District VI Contest Coordi nator days until began work directly contest-sponsoring club three AMA districts HOBBY D outdated 4 old ard older basic RC systems can easily update adding dual rates mixing extra channels frequency changes etc need basic electrical ability snd simple tools Written R/C tech 10 yrs exp 142 page journal includes sources diagrams charts detailed modifications written simple under standable text send $1995 check money order HOIST RADIO 3001-A Kavanaugh Rd Wilson NC 27893 Phone 919 291-8548 Hobby Radio also offers professional R/C repairs mods complete systems service battery pack servos vibration testing new frequency change etc manu facturer repairs guaranteed performed minimal turnaround Send sase price list complete services specific requests club pinpoint desired contest dates months ahead time did problems begin dissolve took con siderable communication date-juggling before workable calm settled areas contest scene Agreeing contest dates mat ter needed improvement recognized some type single-point vehicle needed distributing information such annual con test calendar unforeseen last-minute revi sions planned meets felt advan tageous publicize specifics individual meets well vehicle created assume rule area communicator became still CIA Informer effort has now become nealy automatic No sooner has last area outdoor Free Flight contest season accomplished midOctober year work instigated attempt subsequent seasons complete contest calendar time Santa Claus now tradi tion find complete tn-AMA-district Free Flight contest calendar subsequent flying season appearing pages Informers initial yearly issue roles present Con test Coordinators above-mentioned AMA districts have thereby reduced rubber stamp operations complaints rare Mission accomplishedwith outcome re lated case some other areas country may seeking solutions similar situations CIA club itself formed 1973 remnants number Hoosier Free Flight clubssome defunct previous 15-20 years Communicating new local members rather simple just attend twice-a-month club meetings local airport meeting room keep abreast club area activities However word got around rather quickly about existence newly formed active Free Flight club mid-Indiana began receive inquiries money interested modelers wished contribute cause furthering area Free Flight activities though resided too far away attendE regular club meetings However would surely wish participate formal contest affairs new organization might manage spark Continued page 174 172Model Aviation SAFETY NEEDLE REMOTE NEEDLE VALVE ADJUSTER KEEPS YOUR FINGERS SAFE DISTANCE FROM THE PROP ALLOWS PERFECT NEEDLE ADJUSTMENT FOR EVERY FLIGHT PRECISION GEAR TRAIN MAKES IT EASY TO SET ENGINE FOR PEAK POWER LOCK CONTROL ALLOWS DESIRED DRAG ON ADJUSTER KNOB FROM LOOSE TO LOCKED COMPLETE WITH MOUNTING HARDWARE S ADAPTERS FOR BENT OR KNOB TYPE NEEDLES FOR19- lOt ENGINES PRICE 51201 550 MODEL PRODUCTS POST PAID P& BOX 4026 601 LEE ST CHECK OR MO DES PLAINES IL 60016 [ALREADY FLYINGY 1 BND NEW TRAINERS WITH RADIO I AND ENGINE INSTALLED-OnIyS300I FUTABA 4NLwI4S38 SERVOS I OTTS R/G PARADISE 80893542061 1660 KAUMANA Dr HILOHi 967201 MTL.S MET5LS 50051 4 ES PRECISIO5 I5ITRUMtRTI ___ COMPLETE CATE.0G 200 JOlla otass ciiiii U D9LS SW 2100 M SElso Road roofooO0 0000 45500 mpa513 3228502 WSRL5S SIOSeSO SCALE PHOOC SEEVICE 5CC 55570 55CC PLANS 3 views PHOTO-PACKS PLANS ENLARGING SASS EoIrgIns COS Catalog s3O0 SCALE PlANS end PROTO SERVICE 3205 Medsas Gecasabars Nc 27403 Phane 191512925235 iNo Called Therefore enable giving folks some thing return obvious support former again served communication tool club affairs subsequently grew stature addition constant stream design construction articles plus dash Hoosier humor sprinkled about flavoring rate seemed like recipe whats news respect Free Flight eastern Midwest current editor-in-chief Informer Moe Whittemore also doing double-duty 1987 serving club president Roger Lane Veep Meredith Chamberlain retain ing keys club strongbox Club interests run gauntlet Free Flight categories Indoor FAI evident such names membership roster four-time World Indoor Champ Jim Richmond current FAI Power team member Dale Mateer six issues newsletter published year go $450 domestic Canadian subscribers fullfledged CIA Agent status club member amounts $6 per year Well would believe time head out airport next club meeting So See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 Custom Racers/Berliner Continued page 76 Get idea Tsunami will hit 500 mph rumor has hit 490 mph test flight before Reno really advanced designs should able less course advance technology possible drawbacks thing builders cap abilities have different thresholds everyone possessingthe skilito build 225mph Formula plane can move 450- 500-mph speed range almost certainty least futuristic Unlimited will crash early test flight thats built-in risk machine meant racing Racing cars crash racing bicycles GeeBees crashed did hot Airacobras Mustangs Though danger men continue move forward push back horizons result isnt always instantly clear benefit Safety Net/Hicks Continued page 87 Should adjacent runway catch wandering models before get out hand would better put net further back toward spectator area decided try position about six feet spectators picnic tables point model would have dive almost straight hit onlookerand general safety rules obeyed no model would ever flying position could didnt think couldprotect against potential hazard anything else student just-soloed pilot model goes astray takeoff landing careens off runway head ing felt needed worry about havent subjected net des tructive testing have purposefully flown model just see would hold up As photos show however did load up 40-size model flying weight throw hard could net number times did net show absolutely no damage delight model simply slid down net ground much ruffled tail feather actual ac cident engine running net would likelihood stop engine winding up around prop could certainly expect broken prop plane might hang net might have small weaving job to mend net can imagine cheaper price pay what could otherwise lifethreatening situation call Mr Dave Beighley UPRR offices Omaha produced ordering information about net put touch its manufacturer Chase Bag Company Portland OR called spoke Mr J Dickey delighted hear new application product offered special ordering arrangement clubs may want assemble own safety net Simply send order check $2000 net desired Chase Bag Co PO Box 10192 Portland OR 97210 nets shipped FOB Port land Mark order Attention Mr Harry Gage Net nomenclature Chip net 12 x 64 ft paper woven mesh yellow coded Grande Ronde Bush Pilots express sincere appreciation Union Pacific Railroad its generosity Chase Bag Company making special shipping arrangements other clubs de siring own nets may better way protect ourselves against model aircraft accidentsbut until comes along ones winner doubt safety net going reduce AMA insurance premiums thing may sure club has serious accident things insurance carrier going examine greatest care evalu ating claim What measures did take before accident prevent kind tragedy will club answer Keith-Rider/Lidberg Continued page 93 turns will need bend prop hanger obtain down left thrust should help achieve non-stalling climb left fairly wide circles Work up maximum turns stages changing balance improve giide very small increments needed arrive appropriate number maximum turns take motor off plane wind until bursts use number turns less 10% practical limit motor long use winder unhook wind rear definitely recommended since 1000 turns takes long time wind hand Also use rubber lube prolong life motor give consistent results Bumblebee has built fairly light should have little trouble achiev ing flights about minute using winder remindedthe hard wayof just lightweight little planes recent afternoon first built last seen shipping out four-minute thermal So Id suggest putting name phone number plane safeguard interesting idiosyncrasy model approach max imum winds long body develops twist 174 Model Aviation