0 Fifteen Hours Tight rope Richard Weber Shark 1500 lifted off 81327 am remarkable aerial drama would slowly unfold before returned earth past midnight due pilot exhaustionbut new FAI RC Duration record 15 hours 47 minutes 50 seconds Above Weber checks engine digital tech latest diesel contsining parts ma chined Henry Nelson Dean Smith him self runs suction As fuel level changes two series-connected tanks mixture fre quently adjusted during flight THE FAI RC duration record ulti mate test model aircraft reliability economy Can big plane made strong yet light enough carry adequate fuel within FAI 11-pound limit Can engine fly heavy plane ten 20 minutes fluid ounce fuel Will few seconds after release Shark 1500 gathers speed takeoff visibility against different keep running hour after hour climb sky backgrounds yellow blue Monokote covers inboard wing halves white outer panels dive changing temperature aid night flyingin addition night lights affixed wing tips fin top 18 Model Aviation RICHARD WEBER 0 I 2 ET fi 1W humidity fed fuel tank over foot away Can radio control system operate day ranges exceeding mile reasonably small battery Will good weather hold out long flight Can pilot fly nonstop day night single serious error some questions challenging aspiring duration flier noble history recorded list FAI RC duration records Most information list kindly provided Maynard Hill Some highlights include Walt Goods 1952 flight set Rudder Bug 29 ignition engine Ken Willard reclaimed record USA again 1958 flying sesquiplane long short wing 19 glow May nard Hill raised record 1964 using 49 glow Bill Bertrand 1 put whammy Maynard 1967 flight powered 15 diesel Maynard 2 returned favor 1969 49 converted ignition record moved West Ger 1972 W Kaiser 3 flew 19 glow next year M Hirota 4 Japan took record using 30 glow engine 1974 Lars Giertz recaptured record USA dedication task phenomenal Lars made nine un successful official attempts destroying seven airplanes Flights cut short structural failures weather engine failure pilot error radio failure ultimately succeeded tenth try flying design 12-foot wing span powered 15 diesel ran 138 minutes per fluid ounce fuel account 5 describes frustrations rewards efforts graph RC duration records shows several fascinating facts Nine records set first five years especially designed models essential next ten records required 23 years early years dominated other coun tries particularly USSR Since 1958 USA has held record much time Especially interesting questions rapidly record has grown high may finally go straight line through points graph reason able fit data suggesting limiting duration much higher line gives average increase 35 minutes per year Extending line future predicts duration over 28 hours year 2000 will end Perhaps record will pass 40 hours pointless FAI rule requiring pilot may retard growth duration record aeronautical limitations work FAT records began 1973 mid 1976 Tortoise established three FAI RC nonstop distance records 6 7 8 longest flights 424 miles lasted nearly 11 hours Tortoise received longer 90-inch wing unfinished seaplane Shark try duration record made first attempt September 4 1976 day discovered low downdrafts go 20-minute stretch other shorter periods Tortoise blown down 10-15 feet ground its meager climb rate equalled speed downdraft thermals arrived con tinuous shallow dive necessary keep plane sight alas engine died after seven hours because fuel pressure regulator failed week later tried again time stall soon after take-off caused major damage ending flights year decided concentrate shorter sea plane records work improved reliability decision paid off Shark established FAT seaplane records three 1977 attempts 9 10 RC landplane duration primary October1978 19 1 SHARK 1500 Left The undercarriage literally carriege drops off once ship airborne Right undercarriage landing gear dolly cradles fuselage snugly plywood dolly permitted Weber utilize seaplane hullfrom different record flight 51545760 X Denotes USA Record Holder 6366 YEAR 69127518 FAI RC DURATION RECORDS DATEDURATIONMODELERCOUNTRY 8/19/51002307Ajzenchtetne &USSR Bachnine 6/5/52004027W GoodUSA 8/3/5201 0203VelitchkovskiUSSR 7/12/53011115KhodkevitchUSSR 7/11/54014135PikeG Britain 7/15/54022500VelitchkovskiUSSR 10/7/540231 20HeffermanG Britain 1/30/55030206BethwaiteN Zealand 7/6/55031638VelitchkovskiUSSR 10/12/57042717GobeauxBelgium 4/15/58052900K WillardUSA 10/3/620631 52MalikovUSSR 9/18/64085228M HillUSA 5/17/67111747W BertrandUSA 6/1/69113230MHillUSA 6/25/72121133KaiserW Germany 5/21/73124302HirotaJapan 7/5-6/741429 51L GiertzUSA 6/10-11/78154750RWeberUSA objective 1978 Tortoise repaired available back-up High est hopes rested Shark reconfigured longer duration new version Shark 1500 has 110 1543 sq Clark Y wing made some superb lightweight Mid west balsa visibility against different sky backgrounds transparent yellow blue Monokote covers inboard wing halves white Monokote outer sec tions aids night flying Small incandescent lamps mounted wingtips top fin Kraft radio system oper ates elevator rudder mixture lamps lamp channel does use servo lighter reliable electronic switch described Jim Oddino 11 Shark 1500 powered latest diesel engine containing parts machined Henry Nelson Dean Smith myself Engine intake timing modified year greater fuel economy First test flights Shark 1500 April 30 1978 using four blade 11-6 Results disappointing Subsequent flights proved Power Prop 12-6 best choice despite fact cleared fuselage one-eighth inch ply wood dolly built takeoff runway has worked perfectly time new problem arose rpm engine oscillated up down four seconds After checking out possibil ities found air entering threads remote needle valve Black fuel line hidden fact fuel reach ing engine contained 80% air bubbles Reversing engine tank connections needle valve produced instant cure day before record attempt went PGRC flying field adjust engine compression latest fuel blend gust wind flipped plane over just releasing nose crushed So weather forecast gorgeous lay Shark its back Repairs began soon got home An urgent call brought John Mad den help out Crushed snapped fuse lage pieces replaced new nose block fashioned Midnight passed before finished 445 am rolled out bed after 3 hours sleep would meet field 6 Temperature 50s wind calm sky cloudless witnesses arrived CD Ken Greenhouse John Tallman John Madden Floyd Branch Luther Jackson later Lloyd Charles plane readied test flights adjust engine Left Night light mounted fin Reflective strip fin sides also used along fuselage length Right Reflective tape incandescent light wing tip Lights powered receiver battery controlled electronic switch Four handheld spotlights also used 20 Model Aviation C 12 0 0 C- w cr8 z 0 C- LL compression finally got everything sorted out fueled tanks main event Total weight showed 4970 grams engine started mixture adjusted rpm checked Everything looked good Digital watches poised released Shark 83 127 am As picked up speed held firmly dolly down elevator ready lift-off occurred 18 seconds after release Climb-out steady nearly foot per second Engine power marginal time Tortoise 1976 90 wing mixture setting critical fuel system operates engine suction As fuel level changes two seriesconnected tanks mixture must ad justed Set too lean engine will die now Set too rich will die later accumulated combustion deposits crud thin line between two perils must walked day Mild thermal activity late morn ing brought first serious problem Gen tle dives out thermals usually developing steeper dives Increasing up elevator gingerly little effect suddenly plane would pull out kangaroo hop putting unthinkable stress wing 11-pound airplane dive afternoon advanced point full up elevator enough quickly adding full up trim saved plane flight sudden pullout occurring rubber bands allowed ing lift off its saddle raising angle attack what made dive get steeper lifting tail never did past suspected new nose block exerting down force front up setting what marginally stable before Only day after flight cause dive problem determined wing dent hitting back engine pylon after lifting inch off saddle location dent showed wing slid backward trailing edge seated properly changed angle between wing stab 2 degrees caused dive instability Having large elevator travel did notice remarkable change elevator trim frequently adjusted way thermals downdrafts changing CU fuel supply depleted Pressure pilot increased hours went must blow now Weather ideal engine running fine crew joked about overtime passed eight hours Downdrafts seldom forced plane below 50 feet escap ing some dives frightful sud den pullout hours passed As darkness approached moved everything nearer release point Landing must within 500 meters point Test flying night back 1976 Continued page 88 October1978 21 Ito R John Teliman Ken Greenhouse Dick Weber Things grow much trouble some later flight Note life support system handheld transmitter plugged FAI rules specify just pilot day real test human endurance 1246 next morning Weber poses faithful crew L H Floyd BranchJohn Madden Luther Jackson Ken Greenhouse John Tallman Probably greatest threat record flight came night-flying chopper hovered overhead turned its searchlight GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 RIGHT HAND221000 ROTATION241300 3/8 BORE AT YOUR DEALER ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE i-IELICAL PITCH AND AIRFOIL FOR EFFICIENCY 2 Blade Tractor 5-3each 5-45A-35A-4304 6-36-4354 7-47-67-8504 8-48-68-8654 9-49-69-7 9-810-410-6854 11-411-611-8$1 12-412-512-6$150 USE TO PROPEL AIR CREATE THRUST AND BE PROPELLED BY AIR 5/2-3 2 Blade Pusher 5A-4 6-36-4 354 8-6854 504 9-610-6 $1BLADE 3 BladeTractor 5-3 6-36-4 3 Blade Pusher 6-3504Metallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Pusher 10-6$150 modelers using spark plug gap devices will provide approximation have searched through several catalogs tools equipment gauges find available drill ream screw sizes Perhaps old Brown & Sharpe gauge still being made perhaps another company under another name gauge type quite useful inexpensive will help identify odd bit wire have scrap box check what dealers have sent readers have name ad dress company makes wire gauge such old Brown & Sharpe have youd doing fellow model builders favor letting Editor Model viation know careful confuse wire gauge another Brown & Sharpe gauge have US Standard Gauge Sheet Plate Iron Steel numbers sizes slots same subject steel wire whatever happened old piano wire kind stuff lot springback held its shape shaped could formed would real good spring Seems wire today simply steel wire no spring it bends unwanted shape easily stays Fifteen Hours Weber continued page 21 pack YOU thought good two hours flying turns out good 30 minutes after age heat get through Please keep letters coming questions bothering other people too George M Myers 70 Froehlich Farm Road Hicksville NY 11801 Magic Letters/Shipp continued page 17 England specifies wire #l4swg another drawing says use wire 064 inch third stipulates 1/16th inch some futuristic wise guy says use 1588mm Now what gonna What rela tionship does have other Frantically reading through collection mail order catalogs ref erences favorite model airplane magazines advertising find dismay wire listed either fractions decimals inch melange does swg mm fit Well friend fret no problem solved accompanying table will find relief have ask 1/16th inch 064 inch size same #l4swg 1588mm identical sizes get plans other sizes can always figure out nearest size fit needs table Like yourself Ive going through dilemma years have using 75-year-old Brown & Sharpe wire gauge father machinist col lection old well-made well-kept tools inherited passed away 2-inch diameter gauge pro vides swg number side approximate decimal equivalents other leads wonder ever arrived sizes first place Did decimals come first did swg numbers what based origination wire sizes World Book Encyclopedia states size wire differs according its gauge dia meter American Brown & Sharpe standard gauge used United States gauge varies Number 000000 058 inch diameter Number 36 005 other United States standards Sometimes Imperial gauge England used France Germany use gauges based millimeter steel wire gauge standard gauge steel wire United States Oddly though draw ings England use swg numbers American drawings use common understandable us least fractions decimals inch As service fellow befuddled modelers took data Brown & Sharpe gauge being simple mind added other equivalents should provide information should ever need about wire sizes know some satisfactory either on-board lamps 12-volt spotlights ground ready both Now dark using three lamps plane three spotlights ground Hey gang much harder expected needed clearer head reflective tape Thinking about what plane doing difficult such limited visual cues long must go break record Two hours Can stand possibly tough est thing Id ever done Stress fatigue present night time test flights got out fourth spotlight saving needed light keep going night distractions Un identified flying creatures out Star Wars peeping over tops spotlights nearby NASA laser tracking station pulsed red green laser beams pass ing satellite much longer guys worst time flight yet come Shortly after 11 pm helicopter flew past no lights kind Illegal Soon saw distance turned huge spotlight several minutes searched two miles away Oh no coming way needed ten minutes new record could hardly see model monstrous light eyes came within 500 feet shined directly us tried keep back Go away might blow Shark down kept 88 Model Aviation PROPELLERS AT YOUR DEALER T DISCRETION OF THE PURCHASER G RUSH ST JOHN INDIANA 46373 moving around After longest few min utes can remember left nerves shot Just five minutes finally reached new record still shaking plane got out sight landed beyond 500 meters would lose record Fifteen hours arrived pre pared land crew urged keep going gently hinting bodily harm Taking short walk helped feel ing better long until tomorrow OK would try fly past midnight another half hour Nearby goals bearable Around 1215 groggy must bring down mixture pushed full lean engine stopped landing made 121917 am 120 meters release point Total duration 15 hours 47 minutes 50 seconds Wow about Time cele brate Congratulations crew did outstanding job particularly after dark plane opened revealing enough fuel four hours Fuel con sumption relatively high power set ting 148 minutes per fluid ounce Photos taken cars packed went home extended period recu peration very long day Maybe next June Ill go New Eng land Ontario Quebec try again daylight Any group up north large runway interest support record attempt encouraged write c/o Model viation REFERENCES 1 William Bertrand Eleven Hours Luck American Aircraft Modeler March 1968 2 Maynard Hill Eleven Half Hours Exciting Boredom Flying Models September 1969 3 Werner Thies Flugkapitan Winfried Kaiser Weltrekordler von Dienst Flug May 1973 4 Maynard Hill RIC Channel Chatter Flying Models December 1972 5 Lars Giertz Flight Operation product review product review product review hA Steerable Nose Gear Small lightweight easy install gear features adiustable steering arm straight 3132 nose gear wire bent builders specifications $225 Du-Bro Products Inc 480 Banner Rd Wauconda IL 60084 product review product review product review L Skyhook VIII Model Airplane News December 1974 6 Richard Weber 652 Miles Per Gallon Model viation November 1975 7 Richard Weber Longest Flight Flying Models September 1976 8 Richard Weber Tortoise Recaptures World Record Russians ModelAviation October 1976 9 Richard Weber Shark Attacks Re cord ModelAviation December 1977 10 Richard Weber Seaplane Record Blitz RCModeler February 1978 11 Jim Oddino Radio Spectrum RC Modeler October 1977 RC Scale/Wischers continued page 22 Scale RV-3 particular because its high K score 13527 its incredible speed ratio 446 single-place plane 125-hp Lycoming power flew through speed trap 204 mph very slow 46 mph Sport Scale RC RV-3 entered 1977 Riverside Nats Glen Carter finishing eighth place far fastest plane tests Bushby Mustang II its 180-hp Lycoming 229 mph Because its weight 200 pounds RV-3 approximately same wing area its slow minimum speed 60 mph kept placing higher fourth 1976 Piel Emeraude well known having won World Scale Championship 1974 Diamant stretched Emeraude No alterations switch mountLi required seats four Ryson Cloudster Pazmany-designed Ryan 100-hp long-distance motor-glider flew California Oshkosh 27 gallons fuel average almost 60 miles per gallon Engine power flight used less half 32 hours flown large wing Ryson would make slow flying model Color Masking Have ever wondered get sharp line between colors finishing pressure sensitive polyester film tape available make job simpler thickness 003 tape leaves almost no edge because smooth no problem color seeping beneath its edge edges sealed pressing place slight change appearance tape indicator tell securely fastened surface Its smoothness also permits taping sooner after previous colors applied risk leaving imprint common wrinkled paper tapes As other tapes sharpest line can pro duced removing before newly applied color completely dry disad vantage polyester tape will bend sharply best used straight lines gentle curves ob tained tape local store specializes supplies auto refinishing available widths desireable model work 1/5 1/a ard October1978 89 A1 7 THE SIMPLEST FASTEST AND EASIEST WAY TO MOUNT YOUR BATTERY SWITCH Designed fit radio switches used today! U L I L complete switch mounting set enables install battery switch minutes anywhere fuselage drilling ONE 3/16 hole! Excellent use planes helicopters boats cars attractive black nylon xswitch mount adaptable wall thickness up 3I8 PRODUCTS INCORPORATED 4d0 onner Road Wauconda Illinois 60084 USA
Edition: Model Aviation - 1978/10
Page Numbers: 18, 19, 20, 21, 88, 89
0 Fifteen Hours Tight rope Richard Weber Shark 1500 lifted off 81327 am remarkable aerial drama would slowly unfold before returned earth past midnight due pilot exhaustionbut new FAI RC Duration record 15 hours 47 minutes 50 seconds Above Weber checks engine digital tech latest diesel contsining parts ma chined Henry Nelson Dean Smith him self runs suction As fuel level changes two series-connected tanks mixture fre quently adjusted during flight THE FAI RC duration record ulti mate test model aircraft reliability economy Can big plane made strong yet light enough carry adequate fuel within FAI 11-pound limit Can engine fly heavy plane ten 20 minutes fluid ounce fuel Will few seconds after release Shark 1500 gathers speed takeoff visibility against different keep running hour after hour climb sky backgrounds yellow blue Monokote covers inboard wing halves white outer panels dive changing temperature aid night flyingin addition night lights affixed wing tips fin top 18 Model Aviation RICHARD WEBER 0 I 2 ET fi 1W humidity fed fuel tank over foot away Can radio control system operate day ranges exceeding mile reasonably small battery Will good weather hold out long flight Can pilot fly nonstop day night single serious error some questions challenging aspiring duration flier noble history recorded list FAI RC duration records Most information list kindly provided Maynard Hill Some highlights include Walt Goods 1952 flight set Rudder Bug 29 ignition engine Ken Willard reclaimed record USA again 1958 flying sesquiplane long short wing 19 glow May nard Hill raised record 1964 using 49 glow Bill Bertrand 1 put whammy Maynard 1967 flight powered 15 diesel Maynard 2 returned favor 1969 49 converted ignition record moved West Ger 1972 W Kaiser 3 flew 19 glow next year M Hirota 4 Japan took record using 30 glow engine 1974 Lars Giertz recaptured record USA dedication task phenomenal Lars made nine un successful official attempts destroying seven airplanes Flights cut short structural failures weather engine failure pilot error radio failure ultimately succeeded tenth try flying design 12-foot wing span powered 15 diesel ran 138 minutes per fluid ounce fuel account 5 describes frustrations rewards efforts graph RC duration records shows several fascinating facts Nine records set first five years especially designed models essential next ten records required 23 years early years dominated other coun tries particularly USSR Since 1958 USA has held record much time Especially interesting questions rapidly record has grown high may finally go straight line through points graph reason able fit data suggesting limiting duration much higher line gives average increase 35 minutes per year Extending line future predicts duration over 28 hours year 2000 will end Perhaps record will pass 40 hours pointless FAI rule requiring pilot may retard growth duration record aeronautical limitations work FAT records began 1973 mid 1976 Tortoise established three FAI RC nonstop distance records 6 7 8 longest flights 424 miles lasted nearly 11 hours Tortoise received longer 90-inch wing unfinished seaplane Shark try duration record made first attempt September 4 1976 day discovered low downdrafts go 20-minute stretch other shorter periods Tortoise blown down 10-15 feet ground its meager climb rate equalled speed downdraft thermals arrived con tinuous shallow dive necessary keep plane sight alas engine died after seven hours because fuel pressure regulator failed week later tried again time stall soon after take-off caused major damage ending flights year decided concentrate shorter sea plane records work improved reliability decision paid off Shark established FAT seaplane records three 1977 attempts 9 10 RC landplane duration primary October1978 19 1 SHARK 1500 Left The undercarriage literally carriege drops off once ship airborne Right undercarriage landing gear dolly cradles fuselage snugly plywood dolly permitted Weber utilize seaplane hullfrom different record flight 51545760 X Denotes USA Record Holder 6366 YEAR 69127518 FAI RC DURATION RECORDS DATEDURATIONMODELERCOUNTRY 8/19/51002307Ajzenchtetne &USSR Bachnine 6/5/52004027W GoodUSA 8/3/5201 0203VelitchkovskiUSSR 7/12/53011115KhodkevitchUSSR 7/11/54014135PikeG Britain 7/15/54022500VelitchkovskiUSSR 10/7/540231 20HeffermanG Britain 1/30/55030206BethwaiteN Zealand 7/6/55031638VelitchkovskiUSSR 10/12/57042717GobeauxBelgium 4/15/58052900K WillardUSA 10/3/620631 52MalikovUSSR 9/18/64085228M HillUSA 5/17/67111747W BertrandUSA 6/1/69113230MHillUSA 6/25/72121133KaiserW Germany 5/21/73124302HirotaJapan 7/5-6/741429 51L GiertzUSA 6/10-11/78154750RWeberUSA objective 1978 Tortoise repaired available back-up High est hopes rested Shark reconfigured longer duration new version Shark 1500 has 110 1543 sq Clark Y wing made some superb lightweight Mid west balsa visibility against different sky backgrounds transparent yellow blue Monokote covers inboard wing halves white Monokote outer sec tions aids night flying Small incandescent lamps mounted wingtips top fin Kraft radio system oper ates elevator rudder mixture lamps lamp channel does use servo lighter reliable electronic switch described Jim Oddino 11 Shark 1500 powered latest diesel engine containing parts machined Henry Nelson Dean Smith myself Engine intake timing modified year greater fuel economy First test flights Shark 1500 April 30 1978 using four blade 11-6 Results disappointing Subsequent flights proved Power Prop 12-6 best choice despite fact cleared fuselage one-eighth inch ply wood dolly built takeoff runway has worked perfectly time new problem arose rpm engine oscillated up down four seconds After checking out possibil ities found air entering threads remote needle valve Black fuel line hidden fact fuel reach ing engine contained 80% air bubbles Reversing engine tank connections needle valve produced instant cure day before record attempt went PGRC flying field adjust engine compression latest fuel blend gust wind flipped plane over just releasing nose crushed So weather forecast gorgeous lay Shark its back Repairs began soon got home An urgent call brought John Mad den help out Crushed snapped fuse lage pieces replaced new nose block fashioned Midnight passed before finished 445 am rolled out bed after 3 hours sleep would meet field 6 Temperature 50s wind calm sky cloudless witnesses arrived CD Ken Greenhouse John Tallman John Madden Floyd Branch Luther Jackson later Lloyd Charles plane readied test flights adjust engine Left Night light mounted fin Reflective strip fin sides also used along fuselage length Right Reflective tape incandescent light wing tip Lights powered receiver battery controlled electronic switch Four handheld spotlights also used 20 Model Aviation C 12 0 0 C- w cr8 z 0 C- LL compression finally got everything sorted out fueled tanks main event Total weight showed 4970 grams engine started mixture adjusted rpm checked Everything looked good Digital watches poised released Shark 83 127 am As picked up speed held firmly dolly down elevator ready lift-off occurred 18 seconds after release Climb-out steady nearly foot per second Engine power marginal time Tortoise 1976 90 wing mixture setting critical fuel system operates engine suction As fuel level changes two seriesconnected tanks mixture must ad justed Set too lean engine will die now Set too rich will die later accumulated combustion deposits crud thin line between two perils must walked day Mild thermal activity late morn ing brought first serious problem Gen tle dives out thermals usually developing steeper dives Increasing up elevator gingerly little effect suddenly plane would pull out kangaroo hop putting unthinkable stress wing 11-pound airplane dive afternoon advanced point full up elevator enough quickly adding full up trim saved plane flight sudden pullout occurring rubber bands allowed ing lift off its saddle raising angle attack what made dive get steeper lifting tail never did past suspected new nose block exerting down force front up setting what marginally stable before Only day after flight cause dive problem determined wing dent hitting back engine pylon after lifting inch off saddle location dent showed wing slid backward trailing edge seated properly changed angle between wing stab 2 degrees caused dive instability Having large elevator travel did notice remarkable change elevator trim frequently adjusted way thermals downdrafts changing CU fuel supply depleted Pressure pilot increased hours went must blow now Weather ideal engine running fine crew joked about overtime passed eight hours Downdrafts seldom forced plane below 50 feet escap ing some dives frightful sud den pullout hours passed As darkness approached moved everything nearer release point Landing must within 500 meters point Test flying night back 1976 Continued page 88 October1978 21 Ito R John Teliman Ken Greenhouse Dick Weber Things grow much trouble some later flight Note life support system handheld transmitter plugged FAI rules specify just pilot day real test human endurance 1246 next morning Weber poses faithful crew L H Floyd BranchJohn Madden Luther Jackson Ken Greenhouse John Tallman Probably greatest threat record flight came night-flying chopper hovered overhead turned its searchlight GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 RIGHT HAND221000 ROTATION241300 3/8 BORE AT YOUR DEALER ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE i-IELICAL PITCH AND AIRFOIL FOR EFFICIENCY 2 Blade Tractor 5-3each 5-45A-35A-4304 6-36-4354 7-47-67-8504 8-48-68-8654 9-49-69-7 9-810-410-6854 11-411-611-8$1 12-412-512-6$150 USE TO PROPEL AIR CREATE THRUST AND BE PROPELLED BY AIR 5/2-3 2 Blade Pusher 5A-4 6-36-4 354 8-6854 504 9-610-6 $1BLADE 3 BladeTractor 5-3 6-36-4 3 Blade Pusher 6-3504Metallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Pusher 10-6$150 modelers using spark plug gap devices will provide approximation have searched through several catalogs tools equipment gauges find available drill ream screw sizes Perhaps old Brown & Sharpe gauge still being made perhaps another company under another name gauge type quite useful inexpensive will help identify odd bit wire have scrap box check what dealers have sent readers have name ad dress company makes wire gauge such old Brown & Sharpe have youd doing fellow model builders favor letting Editor Model viation know careful confuse wire gauge another Brown & Sharpe gauge have US Standard Gauge Sheet Plate Iron Steel numbers sizes slots same subject steel wire whatever happened old piano wire kind stuff lot springback held its shape shaped could formed would real good spring Seems wire today simply steel wire no spring it bends unwanted shape easily stays Fifteen Hours Weber continued page 21 pack YOU thought good two hours flying turns out good 30 minutes after age heat get through Please keep letters coming questions bothering other people too George M Myers 70 Froehlich Farm Road Hicksville NY 11801 Magic Letters/Shipp continued page 17 England specifies wire #l4swg another drawing says use wire 064 inch third stipulates 1/16th inch some futuristic wise guy says use 1588mm Now what gonna What rela tionship does have other Frantically reading through collection mail order catalogs ref erences favorite model airplane magazines advertising find dismay wire listed either fractions decimals inch melange does swg mm fit Well friend fret no problem solved accompanying table will find relief have ask 1/16th inch 064 inch size same #l4swg 1588mm identical sizes get plans other sizes can always figure out nearest size fit needs table Like yourself Ive going through dilemma years have using 75-year-old Brown & Sharpe wire gauge father machinist col lection old well-made well-kept tools inherited passed away 2-inch diameter gauge pro vides swg number side approximate decimal equivalents other leads wonder ever arrived sizes first place Did decimals come first did swg numbers what based origination wire sizes World Book Encyclopedia states size wire differs according its gauge dia meter American Brown & Sharpe standard gauge used United States gauge varies Number 000000 058 inch diameter Number 36 005 other United States standards Sometimes Imperial gauge England used France Germany use gauges based millimeter steel wire gauge standard gauge steel wire United States Oddly though draw ings England use swg numbers American drawings use common understandable us least fractions decimals inch As service fellow befuddled modelers took data Brown & Sharpe gauge being simple mind added other equivalents should provide information should ever need about wire sizes know some satisfactory either on-board lamps 12-volt spotlights ground ready both Now dark using three lamps plane three spotlights ground Hey gang much harder expected needed clearer head reflective tape Thinking about what plane doing difficult such limited visual cues long must go break record Two hours Can stand possibly tough est thing Id ever done Stress fatigue present night time test flights got out fourth spotlight saving needed light keep going night distractions Un identified flying creatures out Star Wars peeping over tops spotlights nearby NASA laser tracking station pulsed red green laser beams pass ing satellite much longer guys worst time flight yet come Shortly after 11 pm helicopter flew past no lights kind Illegal Soon saw distance turned huge spotlight several minutes searched two miles away Oh no coming way needed ten minutes new record could hardly see model monstrous light eyes came within 500 feet shined directly us tried keep back Go away might blow Shark down kept 88 Model Aviation PROPELLERS AT YOUR DEALER T DISCRETION OF THE PURCHASER G RUSH ST JOHN INDIANA 46373 moving around After longest few min utes can remember left nerves shot Just five minutes finally reached new record still shaking plane got out sight landed beyond 500 meters would lose record Fifteen hours arrived pre pared land crew urged keep going gently hinting bodily harm Taking short walk helped feel ing better long until tomorrow OK would try fly past midnight another half hour Nearby goals bearable Around 1215 groggy must bring down mixture pushed full lean engine stopped landing made 121917 am 120 meters release point Total duration 15 hours 47 minutes 50 seconds Wow about Time cele brate Congratulations crew did outstanding job particularly after dark plane opened revealing enough fuel four hours Fuel con sumption relatively high power set ting 148 minutes per fluid ounce Photos taken cars packed went home extended period recu peration very long day Maybe next June Ill go New Eng land Ontario Quebec try again daylight Any group up north large runway interest support record attempt encouraged write c/o Model viation REFERENCES 1 William Bertrand Eleven Hours Luck American Aircraft Modeler March 1968 2 Maynard Hill Eleven Half Hours Exciting Boredom Flying Models September 1969 3 Werner Thies Flugkapitan Winfried Kaiser Weltrekordler von Dienst Flug May 1973 4 Maynard Hill RIC Channel Chatter Flying Models December 1972 5 Lars Giertz Flight Operation product review product review product review hA Steerable Nose Gear Small lightweight easy install gear features adiustable steering arm straight 3132 nose gear wire bent builders specifications $225 Du-Bro Products Inc 480 Banner Rd Wauconda IL 60084 product review product review product review L Skyhook VIII Model Airplane News December 1974 6 Richard Weber 652 Miles Per Gallon Model viation November 1975 7 Richard Weber Longest Flight Flying Models September 1976 8 Richard Weber Tortoise Recaptures World Record Russians ModelAviation October 1976 9 Richard Weber Shark Attacks Re cord ModelAviation December 1977 10 Richard Weber Seaplane Record Blitz RCModeler February 1978 11 Jim Oddino Radio Spectrum RC Modeler October 1977 RC Scale/Wischers continued page 22 Scale RV-3 particular because its high K score 13527 its incredible speed ratio 446 single-place plane 125-hp Lycoming power flew through speed trap 204 mph very slow 46 mph Sport Scale RC RV-3 entered 1977 Riverside Nats Glen Carter finishing eighth place far fastest plane tests Bushby Mustang II its 180-hp Lycoming 229 mph Because its weight 200 pounds RV-3 approximately same wing area its slow minimum speed 60 mph kept placing higher fourth 1976 Piel Emeraude well known having won World Scale Championship 1974 Diamant stretched Emeraude No alterations switch mountLi required seats four Ryson Cloudster Pazmany-designed Ryan 100-hp long-distance motor-glider flew California Oshkosh 27 gallons fuel average almost 60 miles per gallon Engine power flight used less half 32 hours flown large wing Ryson would make slow flying model Color Masking Have ever wondered get sharp line between colors finishing pressure sensitive polyester film tape available make job simpler thickness 003 tape leaves almost no edge because smooth no problem color seeping beneath its edge edges sealed pressing place slight change appearance tape indicator tell securely fastened surface Its smoothness also permits taping sooner after previous colors applied risk leaving imprint common wrinkled paper tapes As other tapes sharpest line can pro duced removing before newly applied color completely dry disad vantage polyester tape will bend sharply best used straight lines gentle curves ob tained tape local store specializes supplies auto refinishing available widths desireable model work 1/5 1/a ard October1978 89 A1 7 THE SIMPLEST FASTEST AND EASIEST WAY TO MOUNT YOUR BATTERY SWITCH Designed fit radio switches used today! U L I L complete switch mounting set enables install battery switch minutes anywhere fuselage drilling ONE 3/16 hole! Excellent use planes helicopters boats cars attractive black nylon xswitch mount adaptable wall thickness up 3I8 PRODUCTS INCORPORATED 4d0 onner Road Wauconda Illinois 60084 USA
Edition: Model Aviation - 1978/10
Page Numbers: 18, 19, 20, 21, 88, 89
0 Fifteen Hours Tight rope Richard Weber Shark 1500 lifted off 81327 am remarkable aerial drama would slowly unfold before returned earth past midnight due pilot exhaustionbut new FAI RC Duration record 15 hours 47 minutes 50 seconds Above Weber checks engine digital tech latest diesel contsining parts ma chined Henry Nelson Dean Smith him self runs suction As fuel level changes two series-connected tanks mixture fre quently adjusted during flight THE FAI RC duration record ulti mate test model aircraft reliability economy Can big plane made strong yet light enough carry adequate fuel within FAI 11-pound limit Can engine fly heavy plane ten 20 minutes fluid ounce fuel Will few seconds after release Shark 1500 gathers speed takeoff visibility against different keep running hour after hour climb sky backgrounds yellow blue Monokote covers inboard wing halves white outer panels dive changing temperature aid night flyingin addition night lights affixed wing tips fin top 18 Model Aviation RICHARD WEBER 0 I 2 ET fi 1W humidity fed fuel tank over foot away Can radio control system operate day ranges exceeding mile reasonably small battery Will good weather hold out long flight Can pilot fly nonstop day night single serious error some questions challenging aspiring duration flier noble history recorded list FAI RC duration records Most information list kindly provided Maynard Hill Some highlights include Walt Goods 1952 flight set Rudder Bug 29 ignition engine Ken Willard reclaimed record USA again 1958 flying sesquiplane long short wing 19 glow May nard Hill raised record 1964 using 49 glow Bill Bertrand 1 put whammy Maynard 1967 flight powered 15 diesel Maynard 2 returned favor 1969 49 converted ignition record moved West Ger 1972 W Kaiser 3 flew 19 glow next year M Hirota 4 Japan took record using 30 glow engine 1974 Lars Giertz recaptured record USA dedication task phenomenal Lars made nine un successful official attempts destroying seven airplanes Flights cut short structural failures weather engine failure pilot error radio failure ultimately succeeded tenth try flying design 12-foot wing span powered 15 diesel ran 138 minutes per fluid ounce fuel account 5 describes frustrations rewards efforts graph RC duration records shows several fascinating facts Nine records set first five years especially designed models essential next ten records required 23 years early years dominated other coun tries particularly USSR Since 1958 USA has held record much time Especially interesting questions rapidly record has grown high may finally go straight line through points graph reason able fit data suggesting limiting duration much higher line gives average increase 35 minutes per year Extending line future predicts duration over 28 hours year 2000 will end Perhaps record will pass 40 hours pointless FAI rule requiring pilot may retard growth duration record aeronautical limitations work FAT records began 1973 mid 1976 Tortoise established three FAI RC nonstop distance records 6 7 8 longest flights 424 miles lasted nearly 11 hours Tortoise received longer 90-inch wing unfinished seaplane Shark try duration record made first attempt September 4 1976 day discovered low downdrafts go 20-minute stretch other shorter periods Tortoise blown down 10-15 feet ground its meager climb rate equalled speed downdraft thermals arrived con tinuous shallow dive necessary keep plane sight alas engine died after seven hours because fuel pressure regulator failed week later tried again time stall soon after take-off caused major damage ending flights year decided concentrate shorter sea plane records work improved reliability decision paid off Shark established FAT seaplane records three 1977 attempts 9 10 RC landplane duration primary October1978 19 1 SHARK 1500 Left The undercarriage literally carriege drops off once ship airborne Right undercarriage landing gear dolly cradles fuselage snugly plywood dolly permitted Weber utilize seaplane hullfrom different record flight 51545760 X Denotes USA Record Holder 6366 YEAR 69127518 FAI RC DURATION RECORDS DATEDURATIONMODELERCOUNTRY 8/19/51002307Ajzenchtetne &USSR Bachnine 6/5/52004027W GoodUSA 8/3/5201 0203VelitchkovskiUSSR 7/12/53011115KhodkevitchUSSR 7/11/54014135PikeG Britain 7/15/54022500VelitchkovskiUSSR 10/7/540231 20HeffermanG Britain 1/30/55030206BethwaiteN Zealand 7/6/55031638VelitchkovskiUSSR 10/12/57042717GobeauxBelgium 4/15/58052900K WillardUSA 10/3/620631 52MalikovUSSR 9/18/64085228M HillUSA 5/17/67111747W BertrandUSA 6/1/69113230MHillUSA 6/25/72121133KaiserW Germany 5/21/73124302HirotaJapan 7/5-6/741429 51L GiertzUSA 6/10-11/78154750RWeberUSA objective 1978 Tortoise repaired available back-up High est hopes rested Shark reconfigured longer duration new version Shark 1500 has 110 1543 sq Clark Y wing made some superb lightweight Mid west balsa visibility against different sky backgrounds transparent yellow blue Monokote covers inboard wing halves white Monokote outer sec tions aids night flying Small incandescent lamps mounted wingtips top fin Kraft radio system oper ates elevator rudder mixture lamps lamp channel does use servo lighter reliable electronic switch described Jim Oddino 11 Shark 1500 powered latest diesel engine containing parts machined Henry Nelson Dean Smith myself Engine intake timing modified year greater fuel economy First test flights Shark 1500 April 30 1978 using four blade 11-6 Results disappointing Subsequent flights proved Power Prop 12-6 best choice despite fact cleared fuselage one-eighth inch ply wood dolly built takeoff runway has worked perfectly time new problem arose rpm engine oscillated up down four seconds After checking out possibil ities found air entering threads remote needle valve Black fuel line hidden fact fuel reach ing engine contained 80% air bubbles Reversing engine tank connections needle valve produced instant cure day before record attempt went PGRC flying field adjust engine compression latest fuel blend gust wind flipped plane over just releasing nose crushed So weather forecast gorgeous lay Shark its back Repairs began soon got home An urgent call brought John Mad den help out Crushed snapped fuse lage pieces replaced new nose block fashioned Midnight passed before finished 445 am rolled out bed after 3 hours sleep would meet field 6 Temperature 50s wind calm sky cloudless witnesses arrived CD Ken Greenhouse John Tallman John Madden Floyd Branch Luther Jackson later Lloyd Charles plane readied test flights adjust engine Left Night light mounted fin Reflective strip fin sides also used along fuselage length Right Reflective tape incandescent light wing tip Lights powered receiver battery controlled electronic switch Four handheld spotlights also used 20 Model Aviation C 12 0 0 C- w cr8 z 0 C- LL compression finally got everything sorted out fueled tanks main event Total weight showed 4970 grams engine started mixture adjusted rpm checked Everything looked good Digital watches poised released Shark 83 127 am As picked up speed held firmly dolly down elevator ready lift-off occurred 18 seconds after release Climb-out steady nearly foot per second Engine power marginal time Tortoise 1976 90 wing mixture setting critical fuel system operates engine suction As fuel level changes two seriesconnected tanks mixture must ad justed Set too lean engine will die now Set too rich will die later accumulated combustion deposits crud thin line between two perils must walked day Mild thermal activity late morn ing brought first serious problem Gen tle dives out thermals usually developing steeper dives Increasing up elevator gingerly little effect suddenly plane would pull out kangaroo hop putting unthinkable stress wing 11-pound airplane dive afternoon advanced point full up elevator enough quickly adding full up trim saved plane flight sudden pullout occurring rubber bands allowed ing lift off its saddle raising angle attack what made dive get steeper lifting tail never did past suspected new nose block exerting down force front up setting what marginally stable before Only day after flight cause dive problem determined wing dent hitting back engine pylon after lifting inch off saddle location dent showed wing slid backward trailing edge seated properly changed angle between wing stab 2 degrees caused dive instability Having large elevator travel did notice remarkable change elevator trim frequently adjusted way thermals downdrafts changing CU fuel supply depleted Pressure pilot increased hours went must blow now Weather ideal engine running fine crew joked about overtime passed eight hours Downdrafts seldom forced plane below 50 feet escap ing some dives frightful sud den pullout hours passed As darkness approached moved everything nearer release point Landing must within 500 meters point Test flying night back 1976 Continued page 88 October1978 21 Ito R John Teliman Ken Greenhouse Dick Weber Things grow much trouble some later flight Note life support system handheld transmitter plugged FAI rules specify just pilot day real test human endurance 1246 next morning Weber poses faithful crew L H Floyd BranchJohn Madden Luther Jackson Ken Greenhouse John Tallman Probably greatest threat record flight came night-flying chopper hovered overhead turned its searchlight GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 RIGHT HAND221000 ROTATION241300 3/8 BORE AT YOUR DEALER ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE i-IELICAL PITCH AND AIRFOIL FOR EFFICIENCY 2 Blade Tractor 5-3each 5-45A-35A-4304 6-36-4354 7-47-67-8504 8-48-68-8654 9-49-69-7 9-810-410-6854 11-411-611-8$1 12-412-512-6$150 USE TO PROPEL AIR CREATE THRUST AND BE PROPELLED BY AIR 5/2-3 2 Blade Pusher 5A-4 6-36-4 354 8-6854 504 9-610-6 $1BLADE 3 BladeTractor 5-3 6-36-4 3 Blade Pusher 6-3504Metallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Pusher 10-6$150 modelers using spark plug gap devices will provide approximation have searched through several catalogs tools equipment gauges find available drill ream screw sizes Perhaps old Brown & Sharpe gauge still being made perhaps another company under another name gauge type quite useful inexpensive will help identify odd bit wire have scrap box check what dealers have sent readers have name ad dress company makes wire gauge such old Brown & Sharpe have youd doing fellow model builders favor letting Editor Model viation know careful confuse wire gauge another Brown & Sharpe gauge have US Standard Gauge Sheet Plate Iron Steel numbers sizes slots same subject steel wire whatever happened old piano wire kind stuff lot springback held its shape shaped could formed would real good spring Seems wire today simply steel wire no spring it bends unwanted shape easily stays Fifteen Hours Weber continued page 21 pack YOU thought good two hours flying turns out good 30 minutes after age heat get through Please keep letters coming questions bothering other people too George M Myers 70 Froehlich Farm Road Hicksville NY 11801 Magic Letters/Shipp continued page 17 England specifies wire #l4swg another drawing says use wire 064 inch third stipulates 1/16th inch some futuristic wise guy says use 1588mm Now what gonna What rela tionship does have other Frantically reading through collection mail order catalogs ref erences favorite model airplane magazines advertising find dismay wire listed either fractions decimals inch melange does swg mm fit Well friend fret no problem solved accompanying table will find relief have ask 1/16th inch 064 inch size same #l4swg 1588mm identical sizes get plans other sizes can always figure out nearest size fit needs table Like yourself Ive going through dilemma years have using 75-year-old Brown & Sharpe wire gauge father machinist col lection old well-made well-kept tools inherited passed away 2-inch diameter gauge pro vides swg number side approximate decimal equivalents other leads wonder ever arrived sizes first place Did decimals come first did swg numbers what based origination wire sizes World Book Encyclopedia states size wire differs according its gauge dia meter American Brown & Sharpe standard gauge used United States gauge varies Number 000000 058 inch diameter Number 36 005 other United States standards Sometimes Imperial gauge England used France Germany use gauges based millimeter steel wire gauge standard gauge steel wire United States Oddly though draw ings England use swg numbers American drawings use common understandable us least fractions decimals inch As service fellow befuddled modelers took data Brown & Sharpe gauge being simple mind added other equivalents should provide information should ever need about wire sizes know some satisfactory either on-board lamps 12-volt spotlights ground ready both Now dark using three lamps plane three spotlights ground Hey gang much harder expected needed clearer head reflective tape Thinking about what plane doing difficult such limited visual cues long must go break record Two hours Can stand possibly tough est thing Id ever done Stress fatigue present night time test flights got out fourth spotlight saving needed light keep going night distractions Un identified flying creatures out Star Wars peeping over tops spotlights nearby NASA laser tracking station pulsed red green laser beams pass ing satellite much longer guys worst time flight yet come Shortly after 11 pm helicopter flew past no lights kind Illegal Soon saw distance turned huge spotlight several minutes searched two miles away Oh no coming way needed ten minutes new record could hardly see model monstrous light eyes came within 500 feet shined directly us tried keep back Go away might blow Shark down kept 88 Model Aviation PROPELLERS AT YOUR DEALER T DISCRETION OF THE PURCHASER G RUSH ST JOHN INDIANA 46373 moving around After longest few min utes can remember left nerves shot Just five minutes finally reached new record still shaking plane got out sight landed beyond 500 meters would lose record Fifteen hours arrived pre pared land crew urged keep going gently hinting bodily harm Taking short walk helped feel ing better long until tomorrow OK would try fly past midnight another half hour Nearby goals bearable Around 1215 groggy must bring down mixture pushed full lean engine stopped landing made 121917 am 120 meters release point Total duration 15 hours 47 minutes 50 seconds Wow about Time cele brate Congratulations crew did outstanding job particularly after dark plane opened revealing enough fuel four hours Fuel con sumption relatively high power set ting 148 minutes per fluid ounce Photos taken cars packed went home extended period recu peration very long day Maybe next June Ill go New Eng land Ontario Quebec try again daylight Any group up north large runway interest support record attempt encouraged write c/o Model viation REFERENCES 1 William Bertrand Eleven Hours Luck American Aircraft Modeler March 1968 2 Maynard Hill Eleven Half Hours Exciting Boredom Flying Models September 1969 3 Werner Thies Flugkapitan Winfried Kaiser Weltrekordler von Dienst Flug May 1973 4 Maynard Hill RIC Channel Chatter Flying Models December 1972 5 Lars Giertz Flight Operation product review product review product review hA Steerable Nose Gear Small lightweight easy install gear features adiustable steering arm straight 3132 nose gear wire bent builders specifications $225 Du-Bro Products Inc 480 Banner Rd Wauconda IL 60084 product review product review product review L Skyhook VIII Model Airplane News December 1974 6 Richard Weber 652 Miles Per Gallon Model viation November 1975 7 Richard Weber Longest Flight Flying Models September 1976 8 Richard Weber Tortoise Recaptures World Record Russians ModelAviation October 1976 9 Richard Weber Shark Attacks Re cord ModelAviation December 1977 10 Richard Weber Seaplane Record Blitz RCModeler February 1978 11 Jim Oddino Radio Spectrum RC Modeler October 1977 RC Scale/Wischers continued page 22 Scale RV-3 particular because its high K score 13527 its incredible speed ratio 446 single-place plane 125-hp Lycoming power flew through speed trap 204 mph very slow 46 mph Sport Scale RC RV-3 entered 1977 Riverside Nats Glen Carter finishing eighth place far fastest plane tests Bushby Mustang II its 180-hp Lycoming 229 mph Because its weight 200 pounds RV-3 approximately same wing area its slow minimum speed 60 mph kept placing higher fourth 1976 Piel Emeraude well known having won World Scale Championship 1974 Diamant stretched Emeraude No alterations switch mountLi required seats four Ryson Cloudster Pazmany-designed Ryan 100-hp long-distance motor-glider flew California Oshkosh 27 gallons fuel average almost 60 miles per gallon Engine power flight used less half 32 hours flown large wing Ryson would make slow flying model Color Masking Have ever wondered get sharp line between colors finishing pressure sensitive polyester film tape available make job simpler thickness 003 tape leaves almost no edge because smooth no problem color seeping beneath its edge edges sealed pressing place slight change appearance tape indicator tell securely fastened surface Its smoothness also permits taping sooner after previous colors applied risk leaving imprint common wrinkled paper tapes As other tapes sharpest line can pro duced removing before newly applied color completely dry disad vantage polyester tape will bend sharply best used straight lines gentle curves ob tained tape local store specializes supplies auto refinishing available widths desireable model work 1/5 1/a ard October1978 89 A1 7 THE SIMPLEST FASTEST AND EASIEST WAY TO MOUNT YOUR BATTERY SWITCH Designed fit radio switches used today! U L I L complete switch mounting set enables install battery switch minutes anywhere fuselage drilling ONE 3/16 hole! Excellent use planes helicopters boats cars attractive black nylon xswitch mount adaptable wall thickness up 3I8 PRODUCTS INCORPORATED 4d0 onner Road Wauconda Illinois 60084 USA
Edition: Model Aviation - 1978/10
Page Numbers: 18, 19, 20, 21, 88, 89
0 Fifteen Hours Tight rope Richard Weber Shark 1500 lifted off 81327 am remarkable aerial drama would slowly unfold before returned earth past midnight due pilot exhaustionbut new FAI RC Duration record 15 hours 47 minutes 50 seconds Above Weber checks engine digital tech latest diesel contsining parts ma chined Henry Nelson Dean Smith him self runs suction As fuel level changes two series-connected tanks mixture fre quently adjusted during flight THE FAI RC duration record ulti mate test model aircraft reliability economy Can big plane made strong yet light enough carry adequate fuel within FAI 11-pound limit Can engine fly heavy plane ten 20 minutes fluid ounce fuel Will few seconds after release Shark 1500 gathers speed takeoff visibility against different keep running hour after hour climb sky backgrounds yellow blue Monokote covers inboard wing halves white outer panels dive changing temperature aid night flyingin addition night lights affixed wing tips fin top 18 Model Aviation RICHARD WEBER 0 I 2 ET fi 1W humidity fed fuel tank over foot away Can radio control system operate day ranges exceeding mile reasonably small battery Will good weather hold out long flight Can pilot fly nonstop day night single serious error some questions challenging aspiring duration flier noble history recorded list FAI RC duration records Most information list kindly provided Maynard Hill Some highlights include Walt Goods 1952 flight set Rudder Bug 29 ignition engine Ken Willard reclaimed record USA again 1958 flying sesquiplane long short wing 19 glow May nard Hill raised record 1964 using 49 glow Bill Bertrand 1 put whammy Maynard 1967 flight powered 15 diesel Maynard 2 returned favor 1969 49 converted ignition record moved West Ger 1972 W Kaiser 3 flew 19 glow next year M Hirota 4 Japan took record using 30 glow engine 1974 Lars Giertz recaptured record USA dedication task phenomenal Lars made nine un successful official attempts destroying seven airplanes Flights cut short structural failures weather engine failure pilot error radio failure ultimately succeeded tenth try flying design 12-foot wing span powered 15 diesel ran 138 minutes per fluid ounce fuel account 5 describes frustrations rewards efforts graph RC duration records shows several fascinating facts Nine records set first five years especially designed models essential next ten records required 23 years early years dominated other coun tries particularly USSR Since 1958 USA has held record much time Especially interesting questions rapidly record has grown high may finally go straight line through points graph reason able fit data suggesting limiting duration much higher line gives average increase 35 minutes per year Extending line future predicts duration over 28 hours year 2000 will end Perhaps record will pass 40 hours pointless FAI rule requiring pilot may retard growth duration record aeronautical limitations work FAT records began 1973 mid 1976 Tortoise established three FAI RC nonstop distance records 6 7 8 longest flights 424 miles lasted nearly 11 hours Tortoise received longer 90-inch wing unfinished seaplane Shark try duration record made first attempt September 4 1976 day discovered low downdrafts go 20-minute stretch other shorter periods Tortoise blown down 10-15 feet ground its meager climb rate equalled speed downdraft thermals arrived con tinuous shallow dive necessary keep plane sight alas engine died after seven hours because fuel pressure regulator failed week later tried again time stall soon after take-off caused major damage ending flights year decided concentrate shorter sea plane records work improved reliability decision paid off Shark established FAT seaplane records three 1977 attempts 9 10 RC landplane duration primary October1978 19 1 SHARK 1500 Left The undercarriage literally carriege drops off once ship airborne Right undercarriage landing gear dolly cradles fuselage snugly plywood dolly permitted Weber utilize seaplane hullfrom different record flight 51545760 X Denotes USA Record Holder 6366 YEAR 69127518 FAI RC DURATION RECORDS DATEDURATIONMODELERCOUNTRY 8/19/51002307Ajzenchtetne &USSR Bachnine 6/5/52004027W GoodUSA 8/3/5201 0203VelitchkovskiUSSR 7/12/53011115KhodkevitchUSSR 7/11/54014135PikeG Britain 7/15/54022500VelitchkovskiUSSR 10/7/540231 20HeffermanG Britain 1/30/55030206BethwaiteN Zealand 7/6/55031638VelitchkovskiUSSR 10/12/57042717GobeauxBelgium 4/15/58052900K WillardUSA 10/3/620631 52MalikovUSSR 9/18/64085228M HillUSA 5/17/67111747W BertrandUSA 6/1/69113230MHillUSA 6/25/72121133KaiserW Germany 5/21/73124302HirotaJapan 7/5-6/741429 51L GiertzUSA 6/10-11/78154750RWeberUSA objective 1978 Tortoise repaired available back-up High est hopes rested Shark reconfigured longer duration new version Shark 1500 has 110 1543 sq Clark Y wing made some superb lightweight Mid west balsa visibility against different sky backgrounds transparent yellow blue Monokote covers inboard wing halves white Monokote outer sec tions aids night flying Small incandescent lamps mounted wingtips top fin Kraft radio system oper ates elevator rudder mixture lamps lamp channel does use servo lighter reliable electronic switch described Jim Oddino 11 Shark 1500 powered latest diesel engine containing parts machined Henry Nelson Dean Smith myself Engine intake timing modified year greater fuel economy First test flights Shark 1500 April 30 1978 using four blade 11-6 Results disappointing Subsequent flights proved Power Prop 12-6 best choice despite fact cleared fuselage one-eighth inch ply wood dolly built takeoff runway has worked perfectly time new problem arose rpm engine oscillated up down four seconds After checking out possibil ities found air entering threads remote needle valve Black fuel line hidden fact fuel reach ing engine contained 80% air bubbles Reversing engine tank connections needle valve produced instant cure day before record attempt went PGRC flying field adjust engine compression latest fuel blend gust wind flipped plane over just releasing nose crushed So weather forecast gorgeous lay Shark its back Repairs began soon got home An urgent call brought John Mad den help out Crushed snapped fuse lage pieces replaced new nose block fashioned Midnight passed before finished 445 am rolled out bed after 3 hours sleep would meet field 6 Temperature 50s wind calm sky cloudless witnesses arrived CD Ken Greenhouse John Tallman John Madden Floyd Branch Luther Jackson later Lloyd Charles plane readied test flights adjust engine Left Night light mounted fin Reflective strip fin sides also used along fuselage length Right Reflective tape incandescent light wing tip Lights powered receiver battery controlled electronic switch Four handheld spotlights also used 20 Model Aviation C 12 0 0 C- w cr8 z 0 C- LL compression finally got everything sorted out fueled tanks main event Total weight showed 4970 grams engine started mixture adjusted rpm checked Everything looked good Digital watches poised released Shark 83 127 am As picked up speed held firmly dolly down elevator ready lift-off occurred 18 seconds after release Climb-out steady nearly foot per second Engine power marginal time Tortoise 1976 90 wing mixture setting critical fuel system operates engine suction As fuel level changes two seriesconnected tanks mixture must ad justed Set too lean engine will die now Set too rich will die later accumulated combustion deposits crud thin line between two perils must walked day Mild thermal activity late morn ing brought first serious problem Gen tle dives out thermals usually developing steeper dives Increasing up elevator gingerly little effect suddenly plane would pull out kangaroo hop putting unthinkable stress wing 11-pound airplane dive afternoon advanced point full up elevator enough quickly adding full up trim saved plane flight sudden pullout occurring rubber bands allowed ing lift off its saddle raising angle attack what made dive get steeper lifting tail never did past suspected new nose block exerting down force front up setting what marginally stable before Only day after flight cause dive problem determined wing dent hitting back engine pylon after lifting inch off saddle location dent showed wing slid backward trailing edge seated properly changed angle between wing stab 2 degrees caused dive instability Having large elevator travel did notice remarkable change elevator trim frequently adjusted way thermals downdrafts changing CU fuel supply depleted Pressure pilot increased hours went must blow now Weather ideal engine running fine crew joked about overtime passed eight hours Downdrafts seldom forced plane below 50 feet escap ing some dives frightful sud den pullout hours passed As darkness approached moved everything nearer release point Landing must within 500 meters point Test flying night back 1976 Continued page 88 October1978 21 Ito R John Teliman Ken Greenhouse Dick Weber Things grow much trouble some later flight Note life support system handheld transmitter plugged FAI rules specify just pilot day real test human endurance 1246 next morning Weber poses faithful crew L H Floyd BranchJohn Madden Luther Jackson Ken Greenhouse John Tallman Probably greatest threat record flight came night-flying chopper hovered overhead turned its searchlight GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 RIGHT HAND221000 ROTATION241300 3/8 BORE AT YOUR DEALER ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE i-IELICAL PITCH AND AIRFOIL FOR EFFICIENCY 2 Blade Tractor 5-3each 5-45A-35A-4304 6-36-4354 7-47-67-8504 8-48-68-8654 9-49-69-7 9-810-410-6854 11-411-611-8$1 12-412-512-6$150 USE TO PROPEL AIR CREATE THRUST AND BE PROPELLED BY AIR 5/2-3 2 Blade Pusher 5A-4 6-36-4 354 8-6854 504 9-610-6 $1BLADE 3 BladeTractor 5-3 6-36-4 3 Blade Pusher 6-3504Metallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Pusher 10-6$150 modelers using spark plug gap devices will provide approximation have searched through several catalogs tools equipment gauges find available drill ream screw sizes Perhaps old Brown & Sharpe gauge still being made perhaps another company under another name gauge type quite useful inexpensive will help identify odd bit wire have scrap box check what dealers have sent readers have name ad dress company makes wire gauge such old Brown & Sharpe have youd doing fellow model builders favor letting Editor Model viation know careful confuse wire gauge another Brown & Sharpe gauge have US Standard Gauge Sheet Plate Iron Steel numbers sizes slots same subject steel wire whatever happened old piano wire kind stuff lot springback held its shape shaped could formed would real good spring Seems wire today simply steel wire no spring it bends unwanted shape easily stays Fifteen Hours Weber continued page 21 pack YOU thought good two hours flying turns out good 30 minutes after age heat get through Please keep letters coming questions bothering other people too George M Myers 70 Froehlich Farm Road Hicksville NY 11801 Magic Letters/Shipp continued page 17 England specifies wire #l4swg another drawing says use wire 064 inch third stipulates 1/16th inch some futuristic wise guy says use 1588mm Now what gonna What rela tionship does have other Frantically reading through collection mail order catalogs ref erences favorite model airplane magazines advertising find dismay wire listed either fractions decimals inch melange does swg mm fit Well friend fret no problem solved accompanying table will find relief have ask 1/16th inch 064 inch size same #l4swg 1588mm identical sizes get plans other sizes can always figure out nearest size fit needs table Like yourself Ive going through dilemma years have using 75-year-old Brown & Sharpe wire gauge father machinist col lection old well-made well-kept tools inherited passed away 2-inch diameter gauge pro vides swg number side approximate decimal equivalents other leads wonder ever arrived sizes first place Did decimals come first did swg numbers what based origination wire sizes World Book Encyclopedia states size wire differs according its gauge dia meter American Brown & Sharpe standard gauge used United States gauge varies Number 000000 058 inch diameter Number 36 005 other United States standards Sometimes Imperial gauge England used France Germany use gauges based millimeter steel wire gauge standard gauge steel wire United States Oddly though draw ings England use swg numbers American drawings use common understandable us least fractions decimals inch As service fellow befuddled modelers took data Brown & Sharpe gauge being simple mind added other equivalents should provide information should ever need about wire sizes know some satisfactory either on-board lamps 12-volt spotlights ground ready both Now dark using three lamps plane three spotlights ground Hey gang much harder expected needed clearer head reflective tape Thinking about what plane doing difficult such limited visual cues long must go break record Two hours Can stand possibly tough est thing Id ever done Stress fatigue present night time test flights got out fourth spotlight saving needed light keep going night distractions Un identified flying creatures out Star Wars peeping over tops spotlights nearby NASA laser tracking station pulsed red green laser beams pass ing satellite much longer guys worst time flight yet come Shortly after 11 pm helicopter flew past no lights kind Illegal Soon saw distance turned huge spotlight several minutes searched two miles away Oh no coming way needed ten minutes new record could hardly see model monstrous light eyes came within 500 feet shined directly us tried keep back Go away might blow Shark down kept 88 Model Aviation PROPELLERS AT YOUR DEALER T DISCRETION OF THE PURCHASER G RUSH ST JOHN INDIANA 46373 moving around After longest few min utes can remember left nerves shot Just five minutes finally reached new record still shaking plane got out sight landed beyond 500 meters would lose record Fifteen hours arrived pre pared land crew urged keep going gently hinting bodily harm Taking short walk helped feel ing better long until tomorrow OK would try fly past midnight another half hour Nearby goals bearable Around 1215 groggy must bring down mixture pushed full lean engine stopped landing made 121917 am 120 meters release point Total duration 15 hours 47 minutes 50 seconds Wow about Time cele brate Congratulations crew did outstanding job particularly after dark plane opened revealing enough fuel four hours Fuel con sumption relatively high power set ting 148 minutes per fluid ounce Photos taken cars packed went home extended period recu peration very long day Maybe next June Ill go New Eng land Ontario Quebec try again daylight Any group up north large runway interest support record attempt encouraged write c/o Model viation REFERENCES 1 William Bertrand Eleven Hours Luck American Aircraft Modeler March 1968 2 Maynard Hill Eleven Half Hours Exciting Boredom Flying Models September 1969 3 Werner Thies Flugkapitan Winfried Kaiser Weltrekordler von Dienst Flug May 1973 4 Maynard Hill RIC Channel Chatter Flying Models December 1972 5 Lars Giertz Flight Operation product review product review product review hA Steerable Nose Gear Small lightweight easy install gear features adiustable steering arm straight 3132 nose gear wire bent builders specifications $225 Du-Bro Products Inc 480 Banner Rd Wauconda IL 60084 product review product review product review L Skyhook VIII Model Airplane News December 1974 6 Richard Weber 652 Miles Per Gallon Model viation November 1975 7 Richard Weber Longest Flight Flying Models September 1976 8 Richard Weber Tortoise Recaptures World Record Russians ModelAviation October 1976 9 Richard Weber Shark Attacks Re cord ModelAviation December 1977 10 Richard Weber Seaplane Record Blitz RCModeler February 1978 11 Jim Oddino Radio Spectrum RC Modeler October 1977 RC Scale/Wischers continued page 22 Scale RV-3 particular because its high K score 13527 its incredible speed ratio 446 single-place plane 125-hp Lycoming power flew through speed trap 204 mph very slow 46 mph Sport Scale RC RV-3 entered 1977 Riverside Nats Glen Carter finishing eighth place far fastest plane tests Bushby Mustang II its 180-hp Lycoming 229 mph Because its weight 200 pounds RV-3 approximately same wing area its slow minimum speed 60 mph kept placing higher fourth 1976 Piel Emeraude well known having won World Scale Championship 1974 Diamant stretched Emeraude No alterations switch mountLi required seats four Ryson Cloudster Pazmany-designed Ryan 100-hp long-distance motor-glider flew California Oshkosh 27 gallons fuel average almost 60 miles per gallon Engine power flight used less half 32 hours flown large wing Ryson would make slow flying model Color Masking Have ever wondered get sharp line between colors finishing pressure sensitive polyester film tape available make job simpler thickness 003 tape leaves almost no edge because smooth no problem color seeping beneath its edge edges sealed pressing place slight change appearance tape indicator tell securely fastened surface Its smoothness also permits taping sooner after previous colors applied risk leaving imprint common wrinkled paper tapes As other tapes sharpest line can pro duced removing before newly applied color completely dry disad vantage polyester tape will bend sharply best used straight lines gentle curves ob tained tape local store specializes supplies auto refinishing available widths desireable model work 1/5 1/a ard October1978 89 A1 7 THE SIMPLEST FASTEST AND EASIEST WAY TO MOUNT YOUR BATTERY SWITCH Designed fit radio switches used today! U L I L complete switch mounting set enables install battery switch minutes anywhere fuselage drilling ONE 3/16 hole! Excellent use planes helicopters boats cars attractive black nylon xswitch mount adaptable wall thickness up 3I8 PRODUCTS INCORPORATED 4d0 onner Road Wauconda Illinois 60084 USA
Edition: Model Aviation - 1978/10
Page Numbers: 18, 19, 20, 21, 88, 89
0 Fifteen Hours Tight rope Richard Weber Shark 1500 lifted off 81327 am remarkable aerial drama would slowly unfold before returned earth past midnight due pilot exhaustionbut new FAI RC Duration record 15 hours 47 minutes 50 seconds Above Weber checks engine digital tech latest diesel contsining parts ma chined Henry Nelson Dean Smith him self runs suction As fuel level changes two series-connected tanks mixture fre quently adjusted during flight THE FAI RC duration record ulti mate test model aircraft reliability economy Can big plane made strong yet light enough carry adequate fuel within FAI 11-pound limit Can engine fly heavy plane ten 20 minutes fluid ounce fuel Will few seconds after release Shark 1500 gathers speed takeoff visibility against different keep running hour after hour climb sky backgrounds yellow blue Monokote covers inboard wing halves white outer panels dive changing temperature aid night flyingin addition night lights affixed wing tips fin top 18 Model Aviation RICHARD WEBER 0 I 2 ET fi 1W humidity fed fuel tank over foot away Can radio control system operate day ranges exceeding mile reasonably small battery Will good weather hold out long flight Can pilot fly nonstop day night single serious error some questions challenging aspiring duration flier noble history recorded list FAI RC duration records Most information list kindly provided Maynard Hill Some highlights include Walt Goods 1952 flight set Rudder Bug 29 ignition engine Ken Willard reclaimed record USA again 1958 flying sesquiplane long short wing 19 glow May nard Hill raised record 1964 using 49 glow Bill Bertrand 1 put whammy Maynard 1967 flight powered 15 diesel Maynard 2 returned favor 1969 49 converted ignition record moved West Ger 1972 W Kaiser 3 flew 19 glow next year M Hirota 4 Japan took record using 30 glow engine 1974 Lars Giertz recaptured record USA dedication task phenomenal Lars made nine un successful official attempts destroying seven airplanes Flights cut short structural failures weather engine failure pilot error radio failure ultimately succeeded tenth try flying design 12-foot wing span powered 15 diesel ran 138 minutes per fluid ounce fuel account 5 describes frustrations rewards efforts graph RC duration records shows several fascinating facts Nine records set first five years especially designed models essential next ten records required 23 years early years dominated other coun tries particularly USSR Since 1958 USA has held record much time Especially interesting questions rapidly record has grown high may finally go straight line through points graph reason able fit data suggesting limiting duration much higher line gives average increase 35 minutes per year Extending line future predicts duration over 28 hours year 2000 will end Perhaps record will pass 40 hours pointless FAI rule requiring pilot may retard growth duration record aeronautical limitations work FAT records began 1973 mid 1976 Tortoise established three FAI RC nonstop distance records 6 7 8 longest flights 424 miles lasted nearly 11 hours Tortoise received longer 90-inch wing unfinished seaplane Shark try duration record made first attempt September 4 1976 day discovered low downdrafts go 20-minute stretch other shorter periods Tortoise blown down 10-15 feet ground its meager climb rate equalled speed downdraft thermals arrived con tinuous shallow dive necessary keep plane sight alas engine died after seven hours because fuel pressure regulator failed week later tried again time stall soon after take-off caused major damage ending flights year decided concentrate shorter sea plane records work improved reliability decision paid off Shark established FAT seaplane records three 1977 attempts 9 10 RC landplane duration primary October1978 19 1 SHARK 1500 Left The undercarriage literally carriege drops off once ship airborne Right undercarriage landing gear dolly cradles fuselage snugly plywood dolly permitted Weber utilize seaplane hullfrom different record flight 51545760 X Denotes USA Record Holder 6366 YEAR 69127518 FAI RC DURATION RECORDS DATEDURATIONMODELERCOUNTRY 8/19/51002307Ajzenchtetne &USSR Bachnine 6/5/52004027W GoodUSA 8/3/5201 0203VelitchkovskiUSSR 7/12/53011115KhodkevitchUSSR 7/11/54014135PikeG Britain 7/15/54022500VelitchkovskiUSSR 10/7/540231 20HeffermanG Britain 1/30/55030206BethwaiteN Zealand 7/6/55031638VelitchkovskiUSSR 10/12/57042717GobeauxBelgium 4/15/58052900K WillardUSA 10/3/620631 52MalikovUSSR 9/18/64085228M HillUSA 5/17/67111747W BertrandUSA 6/1/69113230MHillUSA 6/25/72121133KaiserW Germany 5/21/73124302HirotaJapan 7/5-6/741429 51L GiertzUSA 6/10-11/78154750RWeberUSA objective 1978 Tortoise repaired available back-up High est hopes rested Shark reconfigured longer duration new version Shark 1500 has 110 1543 sq Clark Y wing made some superb lightweight Mid west balsa visibility against different sky backgrounds transparent yellow blue Monokote covers inboard wing halves white Monokote outer sec tions aids night flying Small incandescent lamps mounted wingtips top fin Kraft radio system oper ates elevator rudder mixture lamps lamp channel does use servo lighter reliable electronic switch described Jim Oddino 11 Shark 1500 powered latest diesel engine containing parts machined Henry Nelson Dean Smith myself Engine intake timing modified year greater fuel economy First test flights Shark 1500 April 30 1978 using four blade 11-6 Results disappointing Subsequent flights proved Power Prop 12-6 best choice despite fact cleared fuselage one-eighth inch ply wood dolly built takeoff runway has worked perfectly time new problem arose rpm engine oscillated up down four seconds After checking out possibil ities found air entering threads remote needle valve Black fuel line hidden fact fuel reach ing engine contained 80% air bubbles Reversing engine tank connections needle valve produced instant cure day before record attempt went PGRC flying field adjust engine compression latest fuel blend gust wind flipped plane over just releasing nose crushed So weather forecast gorgeous lay Shark its back Repairs began soon got home An urgent call brought John Mad den help out Crushed snapped fuse lage pieces replaced new nose block fashioned Midnight passed before finished 445 am rolled out bed after 3 hours sleep would meet field 6 Temperature 50s wind calm sky cloudless witnesses arrived CD Ken Greenhouse John Tallman John Madden Floyd Branch Luther Jackson later Lloyd Charles plane readied test flights adjust engine Left Night light mounted fin Reflective strip fin sides also used along fuselage length Right Reflective tape incandescent light wing tip Lights powered receiver battery controlled electronic switch Four handheld spotlights also used 20 Model Aviation C 12 0 0 C- w cr8 z 0 C- LL compression finally got everything sorted out fueled tanks main event Total weight showed 4970 grams engine started mixture adjusted rpm checked Everything looked good Digital watches poised released Shark 83 127 am As picked up speed held firmly dolly down elevator ready lift-off occurred 18 seconds after release Climb-out steady nearly foot per second Engine power marginal time Tortoise 1976 90 wing mixture setting critical fuel system operates engine suction As fuel level changes two seriesconnected tanks mixture must ad justed Set too lean engine will die now Set too rich will die later accumulated combustion deposits crud thin line between two perils must walked day Mild thermal activity late morn ing brought first serious problem Gen tle dives out thermals usually developing steeper dives Increasing up elevator gingerly little effect suddenly plane would pull out kangaroo hop putting unthinkable stress wing 11-pound airplane dive afternoon advanced point full up elevator enough quickly adding full up trim saved plane flight sudden pullout occurring rubber bands allowed ing lift off its saddle raising angle attack what made dive get steeper lifting tail never did past suspected new nose block exerting down force front up setting what marginally stable before Only day after flight cause dive problem determined wing dent hitting back engine pylon after lifting inch off saddle location dent showed wing slid backward trailing edge seated properly changed angle between wing stab 2 degrees caused dive instability Having large elevator travel did notice remarkable change elevator trim frequently adjusted way thermals downdrafts changing CU fuel supply depleted Pressure pilot increased hours went must blow now Weather ideal engine running fine crew joked about overtime passed eight hours Downdrafts seldom forced plane below 50 feet escap ing some dives frightful sud den pullout hours passed As darkness approached moved everything nearer release point Landing must within 500 meters point Test flying night back 1976 Continued page 88 October1978 21 Ito R John Teliman Ken Greenhouse Dick Weber Things grow much trouble some later flight Note life support system handheld transmitter plugged FAI rules specify just pilot day real test human endurance 1246 next morning Weber poses faithful crew L H Floyd BranchJohn Madden Luther Jackson Ken Greenhouse John Tallman Probably greatest threat record flight came night-flying chopper hovered overhead turned its searchlight GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 RIGHT HAND221000 ROTATION241300 3/8 BORE AT YOUR DEALER ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE i-IELICAL PITCH AND AIRFOIL FOR EFFICIENCY 2 Blade Tractor 5-3each 5-45A-35A-4304 6-36-4354 7-47-67-8504 8-48-68-8654 9-49-69-7 9-810-410-6854 11-411-611-8$1 12-412-512-6$150 USE TO PROPEL AIR CREATE THRUST AND BE PROPELLED BY AIR 5/2-3 2 Blade Pusher 5A-4 6-36-4 354 8-6854 504 9-610-6 $1BLADE 3 BladeTractor 5-3 6-36-4 3 Blade Pusher 6-3504Metallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Pusher 10-6$150 modelers using spark plug gap devices will provide approximation have searched through several catalogs tools equipment gauges find available drill ream screw sizes Perhaps old Brown & Sharpe gauge still being made perhaps another company under another name gauge type quite useful inexpensive will help identify odd bit wire have scrap box check what dealers have sent readers have name ad dress company makes wire gauge such old Brown & Sharpe have youd doing fellow model builders favor letting Editor Model viation know careful confuse wire gauge another Brown & Sharpe gauge have US Standard Gauge Sheet Plate Iron Steel numbers sizes slots same subject steel wire whatever happened old piano wire kind stuff lot springback held its shape shaped could formed would real good spring Seems wire today simply steel wire no spring it bends unwanted shape easily stays Fifteen Hours Weber continued page 21 pack YOU thought good two hours flying turns out good 30 minutes after age heat get through Please keep letters coming questions bothering other people too George M Myers 70 Froehlich Farm Road Hicksville NY 11801 Magic Letters/Shipp continued page 17 England specifies wire #l4swg another drawing says use wire 064 inch third stipulates 1/16th inch some futuristic wise guy says use 1588mm Now what gonna What rela tionship does have other Frantically reading through collection mail order catalogs ref erences favorite model airplane magazines advertising find dismay wire listed either fractions decimals inch melange does swg mm fit Well friend fret no problem solved accompanying table will find relief have ask 1/16th inch 064 inch size same #l4swg 1588mm identical sizes get plans other sizes can always figure out nearest size fit needs table Like yourself Ive going through dilemma years have using 75-year-old Brown & Sharpe wire gauge father machinist col lection old well-made well-kept tools inherited passed away 2-inch diameter gauge pro vides swg number side approximate decimal equivalents other leads wonder ever arrived sizes first place Did decimals come first did swg numbers what based origination wire sizes World Book Encyclopedia states size wire differs according its gauge dia meter American Brown & Sharpe standard gauge used United States gauge varies Number 000000 058 inch diameter Number 36 005 other United States standards Sometimes Imperial gauge England used France Germany use gauges based millimeter steel wire gauge standard gauge steel wire United States Oddly though draw ings England use swg numbers American drawings use common understandable us least fractions decimals inch As service fellow befuddled modelers took data Brown & Sharpe gauge being simple mind added other equivalents should provide information should ever need about wire sizes know some satisfactory either on-board lamps 12-volt spotlights ground ready both Now dark using three lamps plane three spotlights ground Hey gang much harder expected needed clearer head reflective tape Thinking about what plane doing difficult such limited visual cues long must go break record Two hours Can stand possibly tough est thing Id ever done Stress fatigue present night time test flights got out fourth spotlight saving needed light keep going night distractions Un identified flying creatures out Star Wars peeping over tops spotlights nearby NASA laser tracking station pulsed red green laser beams pass ing satellite much longer guys worst time flight yet come Shortly after 11 pm helicopter flew past no lights kind Illegal Soon saw distance turned huge spotlight several minutes searched two miles away Oh no coming way needed ten minutes new record could hardly see model monstrous light eyes came within 500 feet shined directly us tried keep back Go away might blow Shark down kept 88 Model Aviation PROPELLERS AT YOUR DEALER T DISCRETION OF THE PURCHASER G RUSH ST JOHN INDIANA 46373 moving around After longest few min utes can remember left nerves shot Just five minutes finally reached new record still shaking plane got out sight landed beyond 500 meters would lose record Fifteen hours arrived pre pared land crew urged keep going gently hinting bodily harm Taking short walk helped feel ing better long until tomorrow OK would try fly past midnight another half hour Nearby goals bearable Around 1215 groggy must bring down mixture pushed full lean engine stopped landing made 121917 am 120 meters release point Total duration 15 hours 47 minutes 50 seconds Wow about Time cele brate Congratulations crew did outstanding job particularly after dark plane opened revealing enough fuel four hours Fuel con sumption relatively high power set ting 148 minutes per fluid ounce Photos taken cars packed went home extended period recu peration very long day Maybe next June Ill go New Eng land Ontario Quebec try again daylight Any group up north large runway interest support record attempt encouraged write c/o Model viation REFERENCES 1 William Bertrand Eleven Hours Luck American Aircraft Modeler March 1968 2 Maynard Hill Eleven Half Hours Exciting Boredom Flying Models September 1969 3 Werner Thies Flugkapitan Winfried Kaiser Weltrekordler von Dienst Flug May 1973 4 Maynard Hill RIC Channel Chatter Flying Models December 1972 5 Lars Giertz Flight Operation product review product review product review hA Steerable Nose Gear Small lightweight easy install gear features adiustable steering arm straight 3132 nose gear wire bent builders specifications $225 Du-Bro Products Inc 480 Banner Rd Wauconda IL 60084 product review product review product review L Skyhook VIII Model Airplane News December 1974 6 Richard Weber 652 Miles Per Gallon Model viation November 1975 7 Richard Weber Longest Flight Flying Models September 1976 8 Richard Weber Tortoise Recaptures World Record Russians ModelAviation October 1976 9 Richard Weber Shark Attacks Re cord ModelAviation December 1977 10 Richard Weber Seaplane Record Blitz RCModeler February 1978 11 Jim Oddino Radio Spectrum RC Modeler October 1977 RC Scale/Wischers continued page 22 Scale RV-3 particular because its high K score 13527 its incredible speed ratio 446 single-place plane 125-hp Lycoming power flew through speed trap 204 mph very slow 46 mph Sport Scale RC RV-3 entered 1977 Riverside Nats Glen Carter finishing eighth place far fastest plane tests Bushby Mustang II its 180-hp Lycoming 229 mph Because its weight 200 pounds RV-3 approximately same wing area its slow minimum speed 60 mph kept placing higher fourth 1976 Piel Emeraude well known having won World Scale Championship 1974 Diamant stretched Emeraude No alterations switch mountLi required seats four Ryson Cloudster Pazmany-designed Ryan 100-hp long-distance motor-glider flew California Oshkosh 27 gallons fuel average almost 60 miles per gallon Engine power flight used less half 32 hours flown large wing Ryson would make slow flying model Color Masking Have ever wondered get sharp line between colors finishing pressure sensitive polyester film tape available make job simpler thickness 003 tape leaves almost no edge because smooth no problem color seeping beneath its edge edges sealed pressing place slight change appearance tape indicator tell securely fastened surface Its smoothness also permits taping sooner after previous colors applied risk leaving imprint common wrinkled paper tapes As other tapes sharpest line can pro duced removing before newly applied color completely dry disad vantage polyester tape will bend sharply best used straight lines gentle curves ob tained tape local store specializes supplies auto refinishing available widths desireable model work 1/5 1/a ard October1978 89 A1 7 THE SIMPLEST FASTEST AND EASIEST WAY TO MOUNT YOUR BATTERY SWITCH Designed fit radio switches used today! U L I L complete switch mounting set enables install battery switch minutes anywhere fuselage drilling ONE 3/16 hole! Excellent use planes helicopters boats cars attractive black nylon xswitch mount adaptable wall thickness up 3I8 PRODUCTS INCORPORATED 4d0 onner Road Wauconda Illinois 60084 USA
Edition: Model Aviation - 1978/10
Page Numbers: 18, 19, 20, 21, 88, 89
0 Fifteen Hours Tight rope Richard Weber Shark 1500 lifted off 81327 am remarkable aerial drama would slowly unfold before returned earth past midnight due pilot exhaustionbut new FAI RC Duration record 15 hours 47 minutes 50 seconds Above Weber checks engine digital tech latest diesel contsining parts ma chined Henry Nelson Dean Smith him self runs suction As fuel level changes two series-connected tanks mixture fre quently adjusted during flight THE FAI RC duration record ulti mate test model aircraft reliability economy Can big plane made strong yet light enough carry adequate fuel within FAI 11-pound limit Can engine fly heavy plane ten 20 minutes fluid ounce fuel Will few seconds after release Shark 1500 gathers speed takeoff visibility against different keep running hour after hour climb sky backgrounds yellow blue Monokote covers inboard wing halves white outer panels dive changing temperature aid night flyingin addition night lights affixed wing tips fin top 18 Model Aviation RICHARD WEBER 0 I 2 ET fi 1W humidity fed fuel tank over foot away Can radio control system operate day ranges exceeding mile reasonably small battery Will good weather hold out long flight Can pilot fly nonstop day night single serious error some questions challenging aspiring duration flier noble history recorded list FAI RC duration records Most information list kindly provided Maynard Hill Some highlights include Walt Goods 1952 flight set Rudder Bug 29 ignition engine Ken Willard reclaimed record USA again 1958 flying sesquiplane long short wing 19 glow May nard Hill raised record 1964 using 49 glow Bill Bertrand 1 put whammy Maynard 1967 flight powered 15 diesel Maynard 2 returned favor 1969 49 converted ignition record moved West Ger 1972 W Kaiser 3 flew 19 glow next year M Hirota 4 Japan took record using 30 glow engine 1974 Lars Giertz recaptured record USA dedication task phenomenal Lars made nine un successful official attempts destroying seven airplanes Flights cut short structural failures weather engine failure pilot error radio failure ultimately succeeded tenth try flying design 12-foot wing span powered 15 diesel ran 138 minutes per fluid ounce fuel account 5 describes frustrations rewards efforts graph RC duration records shows several fascinating facts Nine records set first five years especially designed models essential next ten records required 23 years early years dominated other coun tries particularly USSR Since 1958 USA has held record much time Especially interesting questions rapidly record has grown high may finally go straight line through points graph reason able fit data suggesting limiting duration much higher line gives average increase 35 minutes per year Extending line future predicts duration over 28 hours year 2000 will end Perhaps record will pass 40 hours pointless FAI rule requiring pilot may retard growth duration record aeronautical limitations work FAT records began 1973 mid 1976 Tortoise established three FAI RC nonstop distance records 6 7 8 longest flights 424 miles lasted nearly 11 hours Tortoise received longer 90-inch wing unfinished seaplane Shark try duration record made first attempt September 4 1976 day discovered low downdrafts go 20-minute stretch other shorter periods Tortoise blown down 10-15 feet ground its meager climb rate equalled speed downdraft thermals arrived con tinuous shallow dive necessary keep plane sight alas engine died after seven hours because fuel pressure regulator failed week later tried again time stall soon after take-off caused major damage ending flights year decided concentrate shorter sea plane records work improved reliability decision paid off Shark established FAT seaplane records three 1977 attempts 9 10 RC landplane duration primary October1978 19 1 SHARK 1500 Left The undercarriage literally carriege drops off once ship airborne Right undercarriage landing gear dolly cradles fuselage snugly plywood dolly permitted Weber utilize seaplane hullfrom different record flight 51545760 X Denotes USA Record Holder 6366 YEAR 69127518 FAI RC DURATION RECORDS DATEDURATIONMODELERCOUNTRY 8/19/51002307Ajzenchtetne &USSR Bachnine 6/5/52004027W GoodUSA 8/3/5201 0203VelitchkovskiUSSR 7/12/53011115KhodkevitchUSSR 7/11/54014135PikeG Britain 7/15/54022500VelitchkovskiUSSR 10/7/540231 20HeffermanG Britain 1/30/55030206BethwaiteN Zealand 7/6/55031638VelitchkovskiUSSR 10/12/57042717GobeauxBelgium 4/15/58052900K WillardUSA 10/3/620631 52MalikovUSSR 9/18/64085228M HillUSA 5/17/67111747W BertrandUSA 6/1/69113230MHillUSA 6/25/72121133KaiserW Germany 5/21/73124302HirotaJapan 7/5-6/741429 51L GiertzUSA 6/10-11/78154750RWeberUSA objective 1978 Tortoise repaired available back-up High est hopes rested Shark reconfigured longer duration new version Shark 1500 has 110 1543 sq Clark Y wing made some superb lightweight Mid west balsa visibility against different sky backgrounds transparent yellow blue Monokote covers inboard wing halves white Monokote outer sec tions aids night flying Small incandescent lamps mounted wingtips top fin Kraft radio system oper ates elevator rudder mixture lamps lamp channel does use servo lighter reliable electronic switch described Jim Oddino 11 Shark 1500 powered latest diesel engine containing parts machined Henry Nelson Dean Smith myself Engine intake timing modified year greater fuel economy First test flights Shark 1500 April 30 1978 using four blade 11-6 Results disappointing Subsequent flights proved Power Prop 12-6 best choice despite fact cleared fuselage one-eighth inch ply wood dolly built takeoff runway has worked perfectly time new problem arose rpm engine oscillated up down four seconds After checking out possibil ities found air entering threads remote needle valve Black fuel line hidden fact fuel reach ing engine contained 80% air bubbles Reversing engine tank connections needle valve produced instant cure day before record attempt went PGRC flying field adjust engine compression latest fuel blend gust wind flipped plane over just releasing nose crushed So weather forecast gorgeous lay Shark its back Repairs began soon got home An urgent call brought John Mad den help out Crushed snapped fuse lage pieces replaced new nose block fashioned Midnight passed before finished 445 am rolled out bed after 3 hours sleep would meet field 6 Temperature 50s wind calm sky cloudless witnesses arrived CD Ken Greenhouse John Tallman John Madden Floyd Branch Luther Jackson later Lloyd Charles plane readied test flights adjust engine Left Night light mounted fin Reflective strip fin sides also used along fuselage length Right Reflective tape incandescent light wing tip Lights powered receiver battery controlled electronic switch Four handheld spotlights also used 20 Model Aviation C 12 0 0 C- w cr8 z 0 C- LL compression finally got everything sorted out fueled tanks main event Total weight showed 4970 grams engine started mixture adjusted rpm checked Everything looked good Digital watches poised released Shark 83 127 am As picked up speed held firmly dolly down elevator ready lift-off occurred 18 seconds after release Climb-out steady nearly foot per second Engine power marginal time Tortoise 1976 90 wing mixture setting critical fuel system operates engine suction As fuel level changes two seriesconnected tanks mixture must ad justed Set too lean engine will die now Set too rich will die later accumulated combustion deposits crud thin line between two perils must walked day Mild thermal activity late morn ing brought first serious problem Gen tle dives out thermals usually developing steeper dives Increasing up elevator gingerly little effect suddenly plane would pull out kangaroo hop putting unthinkable stress wing 11-pound airplane dive afternoon advanced point full up elevator enough quickly adding full up trim saved plane flight sudden pullout occurring rubber bands allowed ing lift off its saddle raising angle attack what made dive get steeper lifting tail never did past suspected new nose block exerting down force front up setting what marginally stable before Only day after flight cause dive problem determined wing dent hitting back engine pylon after lifting inch off saddle location dent showed wing slid backward trailing edge seated properly changed angle between wing stab 2 degrees caused dive instability Having large elevator travel did notice remarkable change elevator trim frequently adjusted way thermals downdrafts changing CU fuel supply depleted Pressure pilot increased hours went must blow now Weather ideal engine running fine crew joked about overtime passed eight hours Downdrafts seldom forced plane below 50 feet escap ing some dives frightful sud den pullout hours passed As darkness approached moved everything nearer release point Landing must within 500 meters point Test flying night back 1976 Continued page 88 October1978 21 Ito R John Teliman Ken Greenhouse Dick Weber Things grow much trouble some later flight Note life support system handheld transmitter plugged FAI rules specify just pilot day real test human endurance 1246 next morning Weber poses faithful crew L H Floyd BranchJohn Madden Luther Jackson Ken Greenhouse John Tallman Probably greatest threat record flight came night-flying chopper hovered overhead turned its searchlight GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 RIGHT HAND221000 ROTATION241300 3/8 BORE AT YOUR DEALER ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE i-IELICAL PITCH AND AIRFOIL FOR EFFICIENCY 2 Blade Tractor 5-3each 5-45A-35A-4304 6-36-4354 7-47-67-8504 8-48-68-8654 9-49-69-7 9-810-410-6854 11-411-611-8$1 12-412-512-6$150 USE TO PROPEL AIR CREATE THRUST AND BE PROPELLED BY AIR 5/2-3 2 Blade Pusher 5A-4 6-36-4 354 8-6854 504 9-610-6 $1BLADE 3 BladeTractor 5-3 6-36-4 3 Blade Pusher 6-3504Metallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Pusher 10-6$150 modelers using spark plug gap devices will provide approximation have searched through several catalogs tools equipment gauges find available drill ream screw sizes Perhaps old Brown & Sharpe gauge still being made perhaps another company under another name gauge type quite useful inexpensive will help identify odd bit wire have scrap box check what dealers have sent readers have name ad dress company makes wire gauge such old Brown & Sharpe have youd doing fellow model builders favor letting Editor Model viation know careful confuse wire gauge another Brown & Sharpe gauge have US Standard Gauge Sheet Plate Iron Steel numbers sizes slots same subject steel wire whatever happened old piano wire kind stuff lot springback held its shape shaped could formed would real good spring Seems wire today simply steel wire no spring it bends unwanted shape easily stays Fifteen Hours Weber continued page 21 pack YOU thought good two hours flying turns out good 30 minutes after age heat get through Please keep letters coming questions bothering other people too George M Myers 70 Froehlich Farm Road Hicksville NY 11801 Magic Letters/Shipp continued page 17 England specifies wire #l4swg another drawing says use wire 064 inch third stipulates 1/16th inch some futuristic wise guy says use 1588mm Now what gonna What rela tionship does have other Frantically reading through collection mail order catalogs ref erences favorite model airplane magazines advertising find dismay wire listed either fractions decimals inch melange does swg mm fit Well friend fret no problem solved accompanying table will find relief have ask 1/16th inch 064 inch size same #l4swg 1588mm identical sizes get plans other sizes can always figure out nearest size fit needs table Like yourself Ive going through dilemma years have using 75-year-old Brown & Sharpe wire gauge father machinist col lection old well-made well-kept tools inherited passed away 2-inch diameter gauge pro vides swg number side approximate decimal equivalents other leads wonder ever arrived sizes first place Did decimals come first did swg numbers what based origination wire sizes World Book Encyclopedia states size wire differs according its gauge dia meter American Brown & Sharpe standard gauge used United States gauge varies Number 000000 058 inch diameter Number 36 005 other United States standards Sometimes Imperial gauge England used France Germany use gauges based millimeter steel wire gauge standard gauge steel wire United States Oddly though draw ings England use swg numbers American drawings use common understandable us least fractions decimals inch As service fellow befuddled modelers took data Brown & Sharpe gauge being simple mind added other equivalents should provide information should ever need about wire sizes know some satisfactory either on-board lamps 12-volt spotlights ground ready both Now dark using three lamps plane three spotlights ground Hey gang much harder expected needed clearer head reflective tape Thinking about what plane doing difficult such limited visual cues long must go break record Two hours Can stand possibly tough est thing Id ever done Stress fatigue present night time test flights got out fourth spotlight saving needed light keep going night distractions Un identified flying creatures out Star Wars peeping over tops spotlights nearby NASA laser tracking station pulsed red green laser beams pass ing satellite much longer guys worst time flight yet come Shortly after 11 pm helicopter flew past no lights kind Illegal Soon saw distance turned huge spotlight several minutes searched two miles away Oh no coming way needed ten minutes new record could hardly see model monstrous light eyes came within 500 feet shined directly us tried keep back Go away might blow Shark down kept 88 Model Aviation PROPELLERS AT YOUR DEALER T DISCRETION OF THE PURCHASER G RUSH ST JOHN INDIANA 46373 moving around After longest few min utes can remember left nerves shot Just five minutes finally reached new record still shaking plane got out sight landed beyond 500 meters would lose record Fifteen hours arrived pre pared land crew urged keep going gently hinting bodily harm Taking short walk helped feel ing better long until tomorrow OK would try fly past midnight another half hour Nearby goals bearable Around 1215 groggy must bring down mixture pushed full lean engine stopped landing made 121917 am 120 meters release point Total duration 15 hours 47 minutes 50 seconds Wow about Time cele brate Congratulations crew did outstanding job particularly after dark plane opened revealing enough fuel four hours Fuel con sumption relatively high power set ting 148 minutes per fluid ounce Photos taken cars packed went home extended period recu peration very long day Maybe next June Ill go New Eng land Ontario Quebec try again daylight Any group up north large runway interest support record attempt encouraged write c/o Model viation REFERENCES 1 William Bertrand Eleven Hours Luck American Aircraft Modeler March 1968 2 Maynard Hill Eleven Half Hours Exciting Boredom Flying Models September 1969 3 Werner Thies Flugkapitan Winfried Kaiser Weltrekordler von Dienst Flug May 1973 4 Maynard Hill RIC Channel Chatter Flying Models December 1972 5 Lars Giertz Flight Operation product review product review product review hA Steerable Nose Gear Small lightweight easy install gear features adiustable steering arm straight 3132 nose gear wire bent builders specifications $225 Du-Bro Products Inc 480 Banner Rd Wauconda IL 60084 product review product review product review L Skyhook VIII Model Airplane News December 1974 6 Richard Weber 652 Miles Per Gallon Model viation November 1975 7 Richard Weber Longest Flight Flying Models September 1976 8 Richard Weber Tortoise Recaptures World Record Russians ModelAviation October 1976 9 Richard Weber Shark Attacks Re cord ModelAviation December 1977 10 Richard Weber Seaplane Record Blitz RCModeler February 1978 11 Jim Oddino Radio Spectrum RC Modeler October 1977 RC Scale/Wischers continued page 22 Scale RV-3 particular because its high K score 13527 its incredible speed ratio 446 single-place plane 125-hp Lycoming power flew through speed trap 204 mph very slow 46 mph Sport Scale RC RV-3 entered 1977 Riverside Nats Glen Carter finishing eighth place far fastest plane tests Bushby Mustang II its 180-hp Lycoming 229 mph Because its weight 200 pounds RV-3 approximately same wing area its slow minimum speed 60 mph kept placing higher fourth 1976 Piel Emeraude well known having won World Scale Championship 1974 Diamant stretched Emeraude No alterations switch mountLi required seats four Ryson Cloudster Pazmany-designed Ryan 100-hp long-distance motor-glider flew California Oshkosh 27 gallons fuel average almost 60 miles per gallon Engine power flight used less half 32 hours flown large wing Ryson would make slow flying model Color Masking Have ever wondered get sharp line between colors finishing pressure sensitive polyester film tape available make job simpler thickness 003 tape leaves almost no edge because smooth no problem color seeping beneath its edge edges sealed pressing place slight change appearance tape indicator tell securely fastened surface Its smoothness also permits taping sooner after previous colors applied risk leaving imprint common wrinkled paper tapes As other tapes sharpest line can pro duced removing before newly applied color completely dry disad vantage polyester tape will bend sharply best used straight lines gentle curves ob tained tape local store specializes supplies auto refinishing available widths desireable model work 1/5 1/a ard October1978 89 A1 7 THE SIMPLEST FASTEST AND EASIEST WAY TO MOUNT YOUR BATTERY SWITCH Designed fit radio switches used today! U L I L complete switch mounting set enables install battery switch minutes anywhere fuselage drilling ONE 3/16 hole! Excellent use planes helicopters boats cars attractive black nylon xswitch mount adaptable wall thickness up 3I8 PRODUCTS INCORPORATED 4d0 onner Road Wauconda Illinois 60084 USA