Editors Note Occasionally space permits MA publishes personality subjects unusual people ofcourse should Heretofore magazines have preoccupied obviously famous people coincidentally perhaps happen wellknown manufacturers industry hobby flel4 include quiet achievers names seldonz ever hear has impressed us great years subject ofthis issues story Rather say point weve elected let text pictures captions unfold story say merely talented chap has profoundly affected things fly HOW times driving work havc wished could have stayed home putter new moder better yet wouldnt great have job actually paid design build tly various types airplanes helicopters along radio equip ment propulsion systems accessories Well last 16 years what Dave Gray has doingmaking hobby pay itself enjoying minute Dave recalls first airplane built back 1943 seven years old 25it version famous Hellcat making quite name itself overseas Unfortunately balsa wood scarce manufacturers resorted cardboard hardwood substitutions little rubber-powered planes fun build also very discouraging since glide angle resembled brick Dave took carving solid models forerunners todays plastic shelf models kits usually nothing several blocks wood 3-view drawing Men ideas com monplace field few possess rare gift consistently turn ing dreams reality Among Dave Gray notable vision invite share us inspiring story@Art Schmalz As became proficient balsa gliders rubber-powered models Dave found could design build own models achieve good better results what offered beginning stages uniquely interesting design career modeling After war family moved Clayton Michigan garage Dave found huge cardboard box loaded over 20 built-up rubber-powered airplanes old Rodgers engine well-used 36-in Stuka rebuilt flew such enormous success claims what really got him hooked modeling forties satisfied building flying gliders other free flights until came across comic strip called Tim Tylers Luck episode involved two boys inventor built radio-controlled plane little far-fetched boys used fly medicine mountain cabin save old mans life Although RC planes being experimented radio its infancy out reach nearly everyone able fly airplane wires actually control radio signals like science fiction back have became Daves ultimate dream family very poor modeling good inexpensive form entertainment Small rubber model kits could purchased l0 $350 big rubber- gas-powered free flights conserving scraps using parts airplane Dave could squeeze Out two planes same kit As school years passed became proficient cars boats welL desire build remote-controlled model led design several electric powered boats about 30 long could steered left right shore actuator escapements like ones read about model magazines Power escapement supplied hand-carried lantern battery through two ex tremely fine enamel covered copper wires about 30 feet long twisted together form long extension cord system worked well tried same method airplanes problem airplane keep turning continuously risk fatal chance running out wire Around 1953 interest free-flight helicop ters began grow first built magazine construction article didnt work way thought should designed 64 Model Aviation 0 rairisto photographer record event Dave flies 1971 Whiny Birdshades Igor Sikorsky derby place teetering around factory parktng us Dave perfecting Whirly Bird Dieter Schiuter Germany developing machineboth unknown other looked like 1910 Daytona Beach speedster Daves first used car 32 Plymouth stripped down sheet- metal- covered wooden frame fenders lights everything else scrounged junkie cars trucks What dreams turns reality own ultra-light indoor helicopters could fly across room made hover inches ceiling before lightly touching down again rotor blades rubber motor tubes interchangeable body designs also worked well tandem Successful projects reinforced ability design build own creations After high school Dave went work New York Central Railroad Track maintenance wasnt easiest job world supplied him little spending money least enough buy him first used car Naturally didnt work half time decided right build own Starting old 1932 Plymouth Sedan stripped down frame engine wheels After re-working engine constructed wooden frame body covered sheet metaL fenders head lights interior everything else salvaged old cars trucks local junkyard finished car truly extension himself $25000 total investment became pretty fair mechanic interest returned modeling also saved enough money purchase first radio kit first RC airplane made same mistake hundreds beginners make year Instead building high-wing easy-to-fly trainer made sleek looking low-wing scale job Most early attempts crashes fact took over two years worth airplanes equipment achieve first controlled flight hell never forget started engine Cleveland Luscombe Sedan switched radio launched climbed out straight slow gave little right rudder like times before Lo behold actually turned rightright tree did turn right thats what counted Remember homemade gas-tube radio compound escapements crude system todays standards Now radio worked attempted build latest RC helicopter design utilizing old Fox 35 engine throttle control would used bring blades up flying speed consisted geared mechanism screwed needle valve out project never completed however because initial test proved well-worn engine wouldnt lift heavy March 1980 65 1 aware Daves penchant big cardboard RC jobs first 13-ft beast 2 hp engine weighed 45 lbs flew escapements 1958 Dave flying cute 19-powered prototype Cricket never went production too skittish evidently Dave able converse photo Whirly Bird Daves first chopper g wu ing early prototypes before Whirly Bird went production four-bladed rotor head much less body project put aside important things Things like getting married raising family Dave married Pat Pendelton 1958 moved Bowling Green Ohio worked several electrical supply houses began learn finer points about electricity wiring repairing electric motors also Ohio hc achieved first complete radio-controlled flight Berkeley kit powered Fox 07 engine radio his-own design gas tube-type compound escapements Unfortunately flying alone friends believed him flew again next weekend snowing another perfect flight still no witness third weekend everyone come out him see done Murphys Law took over plane flew Out sight never found again Lots Daves models flew away like thatbut did everybody elses back 1963 Grays moved back Michigan hobby started pay itself took part-time job Glass City Models fabrica ting parts assembling pulse radio equipment Pat thought died went heaven way carried paid could ask Two years later lot good ideas financial backer Dave left Glass City Models started company called Airtrol Reworked secretely garage first year trying design electronic pulse-radio system would work better what available still bc sold reasonable price Within next year market during five years Dave experimen ting phases modeling RC cars autogiros Helicopters begait interest more people worldwide according magazines challenge taken up again prototypes made due difficulties setbacks other projects also pursued Projects like building grandfathers clock wifes birthday present scratch-built aid plans instructions using pine the aid plans instructions using pine cabinet gum popular gears gears shafts bearings hands carved out wood clock stands about 6 feet tall chimes hour beautifully finished dark mahogany color keeps excellent timeabsolutely amazing fact vas 9foot exact scale replica famous Pietenpol Air Camper Built exactly same way real plane built original plans built-up ribs wire-spoked whcels metal fittings cable controls thing didnt have 3-scale working model engine eventually sold wishes kept anyone knows its whereabouts hed like hear Airtrol began experimenting foam plastic airplanes built own vacuumforming machines didnt take long see potential foam construction left Airtrol form own business called Gramer Plastics partnership good friend named Jim MerrilL produced five foam airplane kits Three sailplanes Volksplane Twin Engine Bomberthat successfuL times couldnt keep up orders Another facet business forming foam blocks packaging products auto industry Unfortunately 1969 auto strikes stopped production okay though because now time work pet projectthe helicopter now prototypes beginning show some promise Reworked theory simpler easier would build attempt fly repair after inevitable crash Instead building asomplicated gear train connect engine main rotors mounted engine directly top rotor head torque reaction drive tail rotor made rotate simple string pulley system body just pine balsa wood frame held together Besides didnt have machine shop anyway summer 1970 making consis tent 20-and 30-second flights news started spread RC helicopter developed could controlled proven publicly 1970 RC show Cincinnati Ohio Model Airplane News took cover photograph Dave flying 40-powered yellow- and-gray hovering machine appear ed January 1971 issue As matter fact ifs still flyable condition will soon donated Smithsonian Air Space Museum will see along other worthy models made model aviation history Daves future soon change having money problems business Dewey Broberg president Du-Bro saw potential model helicopters asked buy manufacturing rights Dave Within several months Dave dissolved Gramer Plastics favor working Du-Bro further develop hclicopter So 1971 family also now three daughters made big move settled Mundelein Illinois about 10 miles South Du-Bro factory Wauconda Illinois first thing build another helicopter cxcept did couldnt make fly like original did fact wouldnt fly Nothing ever came easy Dave should start now time attempted hover helicopter would go crazy crash time crashed would break rotor blades would have carve new pair have ever tried make two identical airfoiled rotor blades would know exasperating could Finally out sheer desperation Dave tried using simple set flat blades worked Apparently original airfoil blades work ed perfectly identical slsape size weight Anything less just wouldnt make After obstacle still took years worth research development produce what now know Du-Bro Whirley Bird 505 first years Whirley Bird happy 66 Model Aviation Left Contemplating wing panel mammoth-sized HEROT monoplane Inspection noles root rib reveal 12 builtup ribs 24in chord Right Barebones clear pine fuselage Ain scale Instrument panel functionaltach calibrated engine compass radio off switch Thirteen wire spoked wheels caned seat 18in cowl beaten Out sheet aluminum A30in handcarved prop driveanother Gray invention because cardboard monsters Dave Wherever hc flew air shows malls shopping centers club fields trade shows hit show flew coast coast putting demonstrations made trip France fly distributors Europe Dave others experimenting withthe helicopterinthe USA DieterSehiucter doing same thing Germany Perhaps no will ever know made very first controlled flight since both testing prototypes constantly Dave ever first country achieve distinctive honor usually asked come wherever went said crashed anyone else Most other helicopters being tried time mechanically complicated crashed took designer week two make new parts fix again Daves model bit dust usually out flying again soon epoxy dry learning process long varied way get feel flying hang helicopter under large tripod swivel cable connected engines prop shaft An electric motor used bring blades up flying speed could learn control lateral movements fear capsizing way soon knew machine would fly leam tripod thats Whirley Bird achieved huge success thousands kits sold looked helicopter stay Dave began extensive new development program design bigger better flying machine outcome semi-scale Hughes 300 powered 134 Cu O& R engine looked like real helicopter easier fly original Whirley Bird Flight testing Daves main problems Either waited extremely calm day wind would affect else fly Frito-Lay Frito-Lay happens potato chip distributor across street Do- Bro sometimes big enough area warehouse safely fly Whenever Dave wanted fly demonstration test fly modelers newly completed hlicop ter went Frito-Lay flew around potato chips pretzels older men became fascinated Hughes bought first-time modeler did less average job constructing it did fly eventually became pretty good too time retired flying constantly always popping out Du-Bro parts advice months went word him day wife called said died auto mobile accident also said become attached helicopter during last couple years buried him Somewhere up heaven angel rotor blades Dave used test 0 & R engines back factory After installing engine test helicopter hed go Out back fire up lift helicopter hover day battery pack came loose tell out controls froze helicopter began slow steady ascent As fuel consumed lighter machine got higher went Soon just speck sky moving north down Fairfield Road Dave another guy hopped car chased waiting run out fuel came about 1 miles shop right farmers freshly plowed field Expecting see basket case found just landing gear blade holders bent went back shop cleaned up flew again Several weeks later radio malfunction put same chopper vertical dive completely destroyed hit half buried rock Since Hughes 300 Dave has designed built two helicoptersthe 40-powered Tn-Star Shark 60 became midwest area Director NRC HA Nation al R/C Helicopter Association Don Dewey editor RCM Grady Howard Bernie Murphy made up Rules Regula tions earning four different grade levels proficiency Unfortunately interest helicop ters seems decreasing Dave says helicopter contests have become like airplane pattern contests says~ Helicopters made close precision hovering flying maneuvers tearing up sky doing 1oops rolls Part Daves duties Du-Bro test evaluate new ideas products Du Bro4-6 Big Wheels prototype stage needed big airplane test Since -scale movement hadnt begun too big airplanes available use built out cardboard about week 9-foot span weighed about 15 lbs flew great Max 60 first laughed because never thought would get off ground day made its maiden flight pretty windy--about 10-12 mph cardboard brick rolled out about ten feet airborn After making 10-foot cardboard airplanes Cardboard new us Dave experimenting back 1958 made replacement wings some wing less 40-size models outdid himself once building 13-foot 45-lb monster powered 2-hp engine Now wheels worked plane flew something still bothering him prop big airplane like should have March 1980 67 Dave Gray could give wife grandfathers clock built aid instructions using pine cabinet gum-poplar gearsshafts bearings hands carved wood keeps excellent time Continued page 117 Invave asseimg bird semi-scale Hughes 300 powered 1s4 Cu ui-t engine tested warehouse across street An elderly gentleman bought hint loved much buried him 1979 Dave found time uor mis i,uugt up front 40 60 5- 6-in Big Wheels Forward re verse clutch brakes Too fast handle now has 36-in long Masseratti Series 200 such goodies working radiator disc brakes enclosed universal full differential During working hours dreams up endless string accessoriesball links example matter course just obtain extra stability Weight may also saved using cyanoacry late recommended kids accidentprone people refuse wear safety glasses nice touch finishing new ship might roll about cylinder sandpaper around round pencil Use gently shape hypothenuse gussets gentle inward curve cylinder can also used scallop inward formers turtledeck between stringers tissue will stick stringers final touch before finishing intermedi ate model add little soft balsa anywhere model looks like may problem finding something stick tissue such just behind engine cowling stabjoins fuselage wherever think might have bend covering material up 900 abut some comer Better add bit have awkward wrinkle-producing situ ation Sand finished structures 400 600 grit wet-or-dry paper eye rounding sharp edges might grab shrinking tissue such top wing ribs Attach covering brushed white glue thinned about 3040% water doing no time needed fit fairly flat Cover sharply-curved areas such noses wing tips tissue has sprayed until damp using hair-care atomizer Peck-Polymers tissue has good wet strength plane covered about two coats nitrate dope thinned 50-50 thinner should suffice Use colored tissue trim good habit get carefully reading articles studying plans types models get ideas can incorporate next models Steal shamelessly everyone has interesting approach Thats get build models reflect own person ality Good luck dont forget leave big enough hole front fuselage get -times-fuselage-length contest motor back plane ifs wound up PS Dont go flying field first removing warps over steam remember old adage little extra weight nose cures 90% flying ills Keep ideas outstanding pics coming Bill Warner 423-C San Vicente Blvd Santa Monica C4 90402 Brainstormer Schmalz continued page 67 12-in wide cockpit has unique functioning control panel includes tachometer calibrated engine clock tum-bank indi cator fuel-level gauge compass radio on-off switch Additional features include caned pilots seat 13-in wire spoked wheels 18-in aluminum cowl beaten out flat sheet 30-in hand-carved prop will used fly via Du-Bro Prop Drive unit thats folks meantime hes building RC race cars utilizing Prop Drive Unit again first model midget racer about 24 inches long Prop Drive Unit hig22-in prop fly withnot dinky little 11or 12-in prop Now know Du-Bro Prop Drive Unit bom Its actually modified gear train out Shark 60 helicopter reduc ing engine speed 2 times latest mammoth-sized airplane /2-scale 1918 HERGT monoplane built clear white pine wings works art Inspection holes 24-in root rib reveal 12 built-up ribs rib stitching just like real thing ONE SIZE FITS ALL FOR WINTER-PROJECT BUILDERS Jungmeister builds fast gets quickly part likedetailing Go way weight no problem flies best 13 lbs anyway FOR BIPLANE LOVERS agile Jungmeister has classic aerobatic biplane over 40 years Paint military civilian Bevol Howards one/ perhaps/ FOR QUARTER-SCALE BUFFS Like em big too big Bucker true /o scale 65 span itll fit car schneurle 60 up 90 works fine No gear-drives needed Bucker Jungmeister II kit custom-made signed Dave Platt available thru stores Sold direct give best price possible pay UPS shipping Complete kit $11900 four months latest NIk II Duellist design has established reputation thoroughly refined proven RIG twin ever Fast beautiful impressive yet completely safe slow speeds engine out balsa construction nave uIatt iv odels inc Send envelope detailed leaflet Charge cards welcome 6940 NW 15th St Plantation Fla 33313 Phone 305 587-4861 VISA March 1980 117 FOR CONTEST FANS record turning sport flyers scale-contest winners unbeaten anywhere Platt designs fly well have helped modelers get first trophy FOR SPORT FLYERS love flying will find new Jungmeister fun just below pain level Completely aerobatic slow realistic pace laughs rough fields Span 69 two similar 25 40 engines fl ?ELLZT U Complete kit$79OO 6MoDELS TO CHOOSE FROM 0 Dealer SELLER -IE CARDINAL SPORT Only $12995 4Chtflyel 2545 Size 53 WingSpan 2t-22 oz Loadint Very AenoSatic MO nOIIObIn tn0 jtfldOOf 00tpCSIty,f,OORSTP 0I 000, nI td k.ig 600.O0p,t0f.I0S0000t MO fldy 0000n aeMtnI.4 eat IDma leffisOiSn1 No bOjidjOal TD Hydraulic unit converts air driven retracts hydraulic operation H Adjustable give realistic re tract speeds s gear sag out landing collapse LOCKS three wheel types Complete required fortwo wheel ships two instructions included $8 POSTPAID IN US Qualified Dealer Inquiries Invited Sits ifl front powered either 40 60 engine has forward reverse capabilities clutch brakes uses Du-Bro 5-and 6-in big wheels Its really too fast handle throttle set open one-half way latest version Masseratti 250 Series 36-in long body will also incorporate disk brakes enclosed universal full differen tiaL radiator cool engine fully cambered front end Dave makes wood molds body brings work vacuum form out B S plastic Thats benefits has working Du- Bro During working hours Dave dreams up new better accessories us modelers things like Ball Links Kwik-Switch Mount Final Filter V-Tail Mixer Prop Drive Unit new 4-Turn Hatch Latch just name few just doesnt seem anything cant Hes accomplished RC pilot builder MODEL CONTEST CATEGORIES AIRCRAFT BOATS CARS ROCKETS designer Hes competent mechanic excellent machinist electrician carpenter Hes also rare types can use both head hands solve problem Theres thing cant very well cant ride airplane see gets air sick Safety Preston continued page 57 automobile recommend carry smallest amount can get tightly sealed can Invert can before put car make sure cap sealed transport within passenger compartment make sure leave windows open dont smoke Dont leave can gas parked car isa gas can market appears offer safety majority have seen think would worth SOUTHW EST modelers check Out goes name Explosafe within can cellular honeycomb-like structure expanded metal mesh known Explofoil claimed cellular structure will suppress explosion can itself very rugged has gasketed screw caps both discharge spout vent Although can manufactured Canada US distributor information can obtained US Marketing Division Explosafe America Inc 2081 Business Center Drive Suite 180 Irvine CA 92715 final word about use gasoline model aircraft should obvious No Smoking pit area around models Perhaps clubs would well advised establish special area pits flying fields would reserved gasoline fueled models 4ddress letters John Preston 7012 Elvira Court Falls Church V4 22042 OVER 100 MANUFACTURERS NEW KITS NEW PRODUCTS COMMERCIAL EXHIBITS LIVE DEMONSTRATIONS FREE FLIGHT U-CONTROL TRAINS Demonstrations SIX SPECIAL AWARDS AMA RAFFLE FREE PUBLIC PARKING PLASTICS Static DISCOUNT TICKETS Model Contest * Public Invited * * * * June 7th & 8th 1980 Womens Building Fair Park Dallas Texas 118 Model Aviation Iv FOR THE HYDRALOCK I. SELF5TICK MOUNTING 3 $2 CLIP AND 3 TWO FLOW U C0N~ dealer order direct Development Inc Box 7399 rk Manufacturers
Edition: Model Aviation - 1980/03
Page Numbers: 64, 65, 66, 67, 117, 118
Editors Note Occasionally space permits MA publishes personality subjects unusual people ofcourse should Heretofore magazines have preoccupied obviously famous people coincidentally perhaps happen wellknown manufacturers industry hobby flel4 include quiet achievers names seldonz ever hear has impressed us great years subject ofthis issues story Rather say point weve elected let text pictures captions unfold story say merely talented chap has profoundly affected things fly HOW times driving work havc wished could have stayed home putter new moder better yet wouldnt great have job actually paid design build tly various types airplanes helicopters along radio equip ment propulsion systems accessories Well last 16 years what Dave Gray has doingmaking hobby pay itself enjoying minute Dave recalls first airplane built back 1943 seven years old 25it version famous Hellcat making quite name itself overseas Unfortunately balsa wood scarce manufacturers resorted cardboard hardwood substitutions little rubber-powered planes fun build also very discouraging since glide angle resembled brick Dave took carving solid models forerunners todays plastic shelf models kits usually nothing several blocks wood 3-view drawing Men ideas com monplace field few possess rare gift consistently turn ing dreams reality Among Dave Gray notable vision invite share us inspiring story@Art Schmalz As became proficient balsa gliders rubber-powered models Dave found could design build own models achieve good better results what offered beginning stages uniquely interesting design career modeling After war family moved Clayton Michigan garage Dave found huge cardboard box loaded over 20 built-up rubber-powered airplanes old Rodgers engine well-used 36-in Stuka rebuilt flew such enormous success claims what really got him hooked modeling forties satisfied building flying gliders other free flights until came across comic strip called Tim Tylers Luck episode involved two boys inventor built radio-controlled plane little far-fetched boys used fly medicine mountain cabin save old mans life Although RC planes being experimented radio its infancy out reach nearly everyone able fly airplane wires actually control radio signals like science fiction back have became Daves ultimate dream family very poor modeling good inexpensive form entertainment Small rubber model kits could purchased l0 $350 big rubber- gas-powered free flights conserving scraps using parts airplane Dave could squeeze Out two planes same kit As school years passed became proficient cars boats welL desire build remote-controlled model led design several electric powered boats about 30 long could steered left right shore actuator escapements like ones read about model magazines Power escapement supplied hand-carried lantern battery through two ex tremely fine enamel covered copper wires about 30 feet long twisted together form long extension cord system worked well tried same method airplanes problem airplane keep turning continuously risk fatal chance running out wire Around 1953 interest free-flight helicop ters began grow first built magazine construction article didnt work way thought should designed 64 Model Aviation 0 rairisto photographer record event Dave flies 1971 Whiny Birdshades Igor Sikorsky derby place teetering around factory parktng us Dave perfecting Whirly Bird Dieter Schiuter Germany developing machineboth unknown other looked like 1910 Daytona Beach speedster Daves first used car 32 Plymouth stripped down sheet- metal- covered wooden frame fenders lights everything else scrounged junkie cars trucks What dreams turns reality own ultra-light indoor helicopters could fly across room made hover inches ceiling before lightly touching down again rotor blades rubber motor tubes interchangeable body designs also worked well tandem Successful projects reinforced ability design build own creations After high school Dave went work New York Central Railroad Track maintenance wasnt easiest job world supplied him little spending money least enough buy him first used car Naturally didnt work half time decided right build own Starting old 1932 Plymouth Sedan stripped down frame engine wheels After re-working engine constructed wooden frame body covered sheet metaL fenders head lights interior everything else salvaged old cars trucks local junkyard finished car truly extension himself $25000 total investment became pretty fair mechanic interest returned modeling also saved enough money purchase first radio kit first RC airplane made same mistake hundreds beginners make year Instead building high-wing easy-to-fly trainer made sleek looking low-wing scale job Most early attempts crashes fact took over two years worth airplanes equipment achieve first controlled flight hell never forget started engine Cleveland Luscombe Sedan switched radio launched climbed out straight slow gave little right rudder like times before Lo behold actually turned rightright tree did turn right thats what counted Remember homemade gas-tube radio compound escapements crude system todays standards Now radio worked attempted build latest RC helicopter design utilizing old Fox 35 engine throttle control would used bring blades up flying speed consisted geared mechanism screwed needle valve out project never completed however because initial test proved well-worn engine wouldnt lift heavy March 1980 65 1 aware Daves penchant big cardboard RC jobs first 13-ft beast 2 hp engine weighed 45 lbs flew escapements 1958 Dave flying cute 19-powered prototype Cricket never went production too skittish evidently Dave able converse photo Whirly Bird Daves first chopper g wu ing early prototypes before Whirly Bird went production four-bladed rotor head much less body project put aside important things Things like getting married raising family Dave married Pat Pendelton 1958 moved Bowling Green Ohio worked several electrical supply houses began learn finer points about electricity wiring repairing electric motors also Ohio hc achieved first complete radio-controlled flight Berkeley kit powered Fox 07 engine radio his-own design gas tube-type compound escapements Unfortunately flying alone friends believed him flew again next weekend snowing another perfect flight still no witness third weekend everyone come out him see done Murphys Law took over plane flew Out sight never found again Lots Daves models flew away like thatbut did everybody elses back 1963 Grays moved back Michigan hobby started pay itself took part-time job Glass City Models fabrica ting parts assembling pulse radio equipment Pat thought died went heaven way carried paid could ask Two years later lot good ideas financial backer Dave left Glass City Models started company called Airtrol Reworked secretely garage first year trying design electronic pulse-radio system would work better what available still bc sold reasonable price Within next year market during five years Dave experimen ting phases modeling RC cars autogiros Helicopters begait interest more people worldwide according magazines challenge taken up again prototypes made due difficulties setbacks other projects also pursued Projects like building grandfathers clock wifes birthday present scratch-built aid plans instructions using pine the aid plans instructions using pine cabinet gum popular gears gears shafts bearings hands carved out wood clock stands about 6 feet tall chimes hour beautifully finished dark mahogany color keeps excellent timeabsolutely amazing fact vas 9foot exact scale replica famous Pietenpol Air Camper Built exactly same way real plane built original plans built-up ribs wire-spoked whcels metal fittings cable controls thing didnt have 3-scale working model engine eventually sold wishes kept anyone knows its whereabouts hed like hear Airtrol began experimenting foam plastic airplanes built own vacuumforming machines didnt take long see potential foam construction left Airtrol form own business called Gramer Plastics partnership good friend named Jim MerrilL produced five foam airplane kits Three sailplanes Volksplane Twin Engine Bomberthat successfuL times couldnt keep up orders Another facet business forming foam blocks packaging products auto industry Unfortunately 1969 auto strikes stopped production okay though because now time work pet projectthe helicopter now prototypes beginning show some promise Reworked theory simpler easier would build attempt fly repair after inevitable crash Instead building asomplicated gear train connect engine main rotors mounted engine directly top rotor head torque reaction drive tail rotor made rotate simple string pulley system body just pine balsa wood frame held together Besides didnt have machine shop anyway summer 1970 making consis tent 20-and 30-second flights news started spread RC helicopter developed could controlled proven publicly 1970 RC show Cincinnati Ohio Model Airplane News took cover photograph Dave flying 40-powered yellow- and-gray hovering machine appear ed January 1971 issue As matter fact ifs still flyable condition will soon donated Smithsonian Air Space Museum will see along other worthy models made model aviation history Daves future soon change having money problems business Dewey Broberg president Du-Bro saw potential model helicopters asked buy manufacturing rights Dave Within several months Dave dissolved Gramer Plastics favor working Du-Bro further develop hclicopter So 1971 family also now three daughters made big move settled Mundelein Illinois about 10 miles South Du-Bro factory Wauconda Illinois first thing build another helicopter cxcept did couldnt make fly like original did fact wouldnt fly Nothing ever came easy Dave should start now time attempted hover helicopter would go crazy crash time crashed would break rotor blades would have carve new pair have ever tried make two identical airfoiled rotor blades would know exasperating could Finally out sheer desperation Dave tried using simple set flat blades worked Apparently original airfoil blades work ed perfectly identical slsape size weight Anything less just wouldnt make After obstacle still took years worth research development produce what now know Du-Bro Whirley Bird 505 first years Whirley Bird happy 66 Model Aviation Left Contemplating wing panel mammoth-sized HEROT monoplane Inspection noles root rib reveal 12 builtup ribs 24in chord Right Barebones clear pine fuselage Ain scale Instrument panel functionaltach calibrated engine compass radio off switch Thirteen wire spoked wheels caned seat 18in cowl beaten Out sheet aluminum A30in handcarved prop driveanother Gray invention because cardboard monsters Dave Wherever hc flew air shows malls shopping centers club fields trade shows hit show flew coast coast putting demonstrations made trip France fly distributors Europe Dave others experimenting withthe helicopterinthe USA DieterSehiucter doing same thing Germany Perhaps no will ever know made very first controlled flight since both testing prototypes constantly Dave ever first country achieve distinctive honor usually asked come wherever went said crashed anyone else Most other helicopters being tried time mechanically complicated crashed took designer week two make new parts fix again Daves model bit dust usually out flying again soon epoxy dry learning process long varied way get feel flying hang helicopter under large tripod swivel cable connected engines prop shaft An electric motor used bring blades up flying speed could learn control lateral movements fear capsizing way soon knew machine would fly leam tripod thats Whirley Bird achieved huge success thousands kits sold looked helicopter stay Dave began extensive new development program design bigger better flying machine outcome semi-scale Hughes 300 powered 134 Cu O& R engine looked like real helicopter easier fly original Whirley Bird Flight testing Daves main problems Either waited extremely calm day wind would affect else fly Frito-Lay Frito-Lay happens potato chip distributor across street Do- Bro sometimes big enough area warehouse safely fly Whenever Dave wanted fly demonstration test fly modelers newly completed hlicop ter went Frito-Lay flew around potato chips pretzels older men became fascinated Hughes bought first-time modeler did less average job constructing it did fly eventually became pretty good too time retired flying constantly always popping out Du-Bro parts advice months went word him day wife called said died auto mobile accident also said become attached helicopter during last couple years buried him Somewhere up heaven angel rotor blades Dave used test 0 & R engines back factory After installing engine test helicopter hed go Out back fire up lift helicopter hover day battery pack came loose tell out controls froze helicopter began slow steady ascent As fuel consumed lighter machine got higher went Soon just speck sky moving north down Fairfield Road Dave another guy hopped car chased waiting run out fuel came about 1 miles shop right farmers freshly plowed field Expecting see basket case found just landing gear blade holders bent went back shop cleaned up flew again Several weeks later radio malfunction put same chopper vertical dive completely destroyed hit half buried rock Since Hughes 300 Dave has designed built two helicoptersthe 40-powered Tn-Star Shark 60 became midwest area Director NRC HA Nation al R/C Helicopter Association Don Dewey editor RCM Grady Howard Bernie Murphy made up Rules Regula tions earning four different grade levels proficiency Unfortunately interest helicop ters seems decreasing Dave says helicopter contests have become like airplane pattern contests says~ Helicopters made close precision hovering flying maneuvers tearing up sky doing 1oops rolls Part Daves duties Du-Bro test evaluate new ideas products Du Bro4-6 Big Wheels prototype stage needed big airplane test Since -scale movement hadnt begun too big airplanes available use built out cardboard about week 9-foot span weighed about 15 lbs flew great Max 60 first laughed because never thought would get off ground day made its maiden flight pretty windy--about 10-12 mph cardboard brick rolled out about ten feet airborn After making 10-foot cardboard airplanes Cardboard new us Dave experimenting back 1958 made replacement wings some wing less 40-size models outdid himself once building 13-foot 45-lb monster powered 2-hp engine Now wheels worked plane flew something still bothering him prop big airplane like should have March 1980 67 Dave Gray could give wife grandfathers clock built aid instructions using pine cabinet gum-poplar gearsshafts bearings hands carved wood keeps excellent time Continued page 117 Invave asseimg bird semi-scale Hughes 300 powered 1s4 Cu ui-t engine tested warehouse across street An elderly gentleman bought hint loved much buried him 1979 Dave found time uor mis i,uugt up front 40 60 5- 6-in Big Wheels Forward re verse clutch brakes Too fast handle now has 36-in long Masseratti Series 200 such goodies working radiator disc brakes enclosed universal full differential During working hours dreams up endless string accessoriesball links example matter course just obtain extra stability Weight may also saved using cyanoacry late recommended kids accidentprone people refuse wear safety glasses nice touch finishing new ship might roll about cylinder sandpaper around round pencil Use gently shape hypothenuse gussets gentle inward curve cylinder can also used scallop inward formers turtledeck between stringers tissue will stick stringers final touch before finishing intermedi ate model add little soft balsa anywhere model looks like may problem finding something stick tissue such just behind engine cowling stabjoins fuselage wherever think might have bend covering material up 900 abut some comer Better add bit have awkward wrinkle-producing situ ation Sand finished structures 400 600 grit wet-or-dry paper eye rounding sharp edges might grab shrinking tissue such top wing ribs Attach covering brushed white glue thinned about 3040% water doing no time needed fit fairly flat Cover sharply-curved areas such noses wing tips tissue has sprayed until damp using hair-care atomizer Peck-Polymers tissue has good wet strength plane covered about two coats nitrate dope thinned 50-50 thinner should suffice Use colored tissue trim good habit get carefully reading articles studying plans types models get ideas can incorporate next models Steal shamelessly everyone has interesting approach Thats get build models reflect own person ality Good luck dont forget leave big enough hole front fuselage get -times-fuselage-length contest motor back plane ifs wound up PS Dont go flying field first removing warps over steam remember old adage little extra weight nose cures 90% flying ills Keep ideas outstanding pics coming Bill Warner 423-C San Vicente Blvd Santa Monica C4 90402 Brainstormer Schmalz continued page 67 12-in wide cockpit has unique functioning control panel includes tachometer calibrated engine clock tum-bank indi cator fuel-level gauge compass radio on-off switch Additional features include caned pilots seat 13-in wire spoked wheels 18-in aluminum cowl beaten out flat sheet 30-in hand-carved prop will used fly via Du-Bro Prop Drive unit thats folks meantime hes building RC race cars utilizing Prop Drive Unit again first model midget racer about 24 inches long Prop Drive Unit hig22-in prop fly withnot dinky little 11or 12-in prop Now know Du-Bro Prop Drive Unit bom Its actually modified gear train out Shark 60 helicopter reduc ing engine speed 2 times latest mammoth-sized airplane /2-scale 1918 HERGT monoplane built clear white pine wings works art Inspection holes 24-in root rib reveal 12 built-up ribs rib stitching just like real thing ONE SIZE FITS ALL FOR WINTER-PROJECT BUILDERS Jungmeister builds fast gets quickly part likedetailing Go way weight no problem flies best 13 lbs anyway FOR BIPLANE LOVERS agile Jungmeister has classic aerobatic biplane over 40 years Paint military civilian Bevol Howards one/ perhaps/ FOR QUARTER-SCALE BUFFS Like em big too big Bucker true /o scale 65 span itll fit car schneurle 60 up 90 works fine No gear-drives needed Bucker Jungmeister II kit custom-made signed Dave Platt available thru stores Sold direct give best price possible pay UPS shipping Complete kit $11900 four months latest NIk II Duellist design has established reputation thoroughly refined proven RIG twin ever Fast beautiful impressive yet completely safe slow speeds engine out balsa construction nave uIatt iv odels inc Send envelope detailed leaflet Charge cards welcome 6940 NW 15th St Plantation Fla 33313 Phone 305 587-4861 VISA March 1980 117 FOR CONTEST FANS record turning sport flyers scale-contest winners unbeaten anywhere Platt designs fly well have helped modelers get first trophy FOR SPORT FLYERS love flying will find new Jungmeister fun just below pain level Completely aerobatic slow realistic pace laughs rough fields Span 69 two similar 25 40 engines fl ?ELLZT U Complete kit$79OO 6MoDELS TO CHOOSE FROM 0 Dealer SELLER -IE CARDINAL SPORT Only $12995 4Chtflyel 2545 Size 53 WingSpan 2t-22 oz Loadint Very AenoSatic MO nOIIObIn tn0 jtfldOOf 00tpCSIty,f,OORSTP 0I 000, nI td k.ig 600.O0p,t0f.I0S0000t MO fldy 0000n aeMtnI.4 eat IDma leffisOiSn1 No bOjidjOal TD Hydraulic unit converts air driven retracts hydraulic operation H Adjustable give realistic re tract speeds s gear sag out landing collapse LOCKS three wheel types Complete required fortwo wheel ships two instructions included $8 POSTPAID IN US Qualified Dealer Inquiries Invited Sits ifl front powered either 40 60 engine has forward reverse capabilities clutch brakes uses Du-Bro 5-and 6-in big wheels Its really too fast handle throttle set open one-half way latest version Masseratti 250 Series 36-in long body will also incorporate disk brakes enclosed universal full differen tiaL radiator cool engine fully cambered front end Dave makes wood molds body brings work vacuum form out B S plastic Thats benefits has working Du- Bro During working hours Dave dreams up new better accessories us modelers things like Ball Links Kwik-Switch Mount Final Filter V-Tail Mixer Prop Drive Unit new 4-Turn Hatch Latch just name few just doesnt seem anything cant Hes accomplished RC pilot builder MODEL CONTEST CATEGORIES AIRCRAFT BOATS CARS ROCKETS designer Hes competent mechanic excellent machinist electrician carpenter Hes also rare types can use both head hands solve problem Theres thing cant very well cant ride airplane see gets air sick Safety Preston continued page 57 automobile recommend carry smallest amount can get tightly sealed can Invert can before put car make sure cap sealed transport within passenger compartment make sure leave windows open dont smoke Dont leave can gas parked car isa gas can market appears offer safety majority have seen think would worth SOUTHW EST modelers check Out goes name Explosafe within can cellular honeycomb-like structure expanded metal mesh known Explofoil claimed cellular structure will suppress explosion can itself very rugged has gasketed screw caps both discharge spout vent Although can manufactured Canada US distributor information can obtained US Marketing Division Explosafe America Inc 2081 Business Center Drive Suite 180 Irvine CA 92715 final word about use gasoline model aircraft should obvious No Smoking pit area around models Perhaps clubs would well advised establish special area pits flying fields would reserved gasoline fueled models 4ddress letters John Preston 7012 Elvira Court Falls Church V4 22042 OVER 100 MANUFACTURERS NEW KITS NEW PRODUCTS COMMERCIAL EXHIBITS LIVE DEMONSTRATIONS FREE FLIGHT U-CONTROL TRAINS Demonstrations SIX SPECIAL AWARDS AMA RAFFLE FREE PUBLIC PARKING PLASTICS Static DISCOUNT TICKETS Model Contest * Public Invited * * * * June 7th & 8th 1980 Womens Building Fair Park Dallas Texas 118 Model Aviation Iv FOR THE HYDRALOCK I. SELF5TICK MOUNTING 3 $2 CLIP AND 3 TWO FLOW U C0N~ dealer order direct Development Inc Box 7399 rk Manufacturers
Edition: Model Aviation - 1980/03
Page Numbers: 64, 65, 66, 67, 117, 118
Editors Note Occasionally space permits MA publishes personality subjects unusual people ofcourse should Heretofore magazines have preoccupied obviously famous people coincidentally perhaps happen wellknown manufacturers industry hobby flel4 include quiet achievers names seldonz ever hear has impressed us great years subject ofthis issues story Rather say point weve elected let text pictures captions unfold story say merely talented chap has profoundly affected things fly HOW times driving work havc wished could have stayed home putter new moder better yet wouldnt great have job actually paid design build tly various types airplanes helicopters along radio equip ment propulsion systems accessories Well last 16 years what Dave Gray has doingmaking hobby pay itself enjoying minute Dave recalls first airplane built back 1943 seven years old 25it version famous Hellcat making quite name itself overseas Unfortunately balsa wood scarce manufacturers resorted cardboard hardwood substitutions little rubber-powered planes fun build also very discouraging since glide angle resembled brick Dave took carving solid models forerunners todays plastic shelf models kits usually nothing several blocks wood 3-view drawing Men ideas com monplace field few possess rare gift consistently turn ing dreams reality Among Dave Gray notable vision invite share us inspiring story@Art Schmalz As became proficient balsa gliders rubber-powered models Dave found could design build own models achieve good better results what offered beginning stages uniquely interesting design career modeling After war family moved Clayton Michigan garage Dave found huge cardboard box loaded over 20 built-up rubber-powered airplanes old Rodgers engine well-used 36-in Stuka rebuilt flew such enormous success claims what really got him hooked modeling forties satisfied building flying gliders other free flights until came across comic strip called Tim Tylers Luck episode involved two boys inventor built radio-controlled plane little far-fetched boys used fly medicine mountain cabin save old mans life Although RC planes being experimented radio its infancy out reach nearly everyone able fly airplane wires actually control radio signals like science fiction back have became Daves ultimate dream family very poor modeling good inexpensive form entertainment Small rubber model kits could purchased l0 $350 big rubber- gas-powered free flights conserving scraps using parts airplane Dave could squeeze Out two planes same kit As school years passed became proficient cars boats welL desire build remote-controlled model led design several electric powered boats about 30 long could steered left right shore actuator escapements like ones read about model magazines Power escapement supplied hand-carried lantern battery through two ex tremely fine enamel covered copper wires about 30 feet long twisted together form long extension cord system worked well tried same method airplanes problem airplane keep turning continuously risk fatal chance running out wire Around 1953 interest free-flight helicop ters began grow first built magazine construction article didnt work way thought should designed 64 Model Aviation 0 rairisto photographer record event Dave flies 1971 Whiny Birdshades Igor Sikorsky derby place teetering around factory parktng us Dave perfecting Whirly Bird Dieter Schiuter Germany developing machineboth unknown other looked like 1910 Daytona Beach speedster Daves first used car 32 Plymouth stripped down sheet- metal- covered wooden frame fenders lights everything else scrounged junkie cars trucks What dreams turns reality own ultra-light indoor helicopters could fly across room made hover inches ceiling before lightly touching down again rotor blades rubber motor tubes interchangeable body designs also worked well tandem Successful projects reinforced ability design build own creations After high school Dave went work New York Central Railroad Track maintenance wasnt easiest job world supplied him little spending money least enough buy him first used car Naturally didnt work half time decided right build own Starting old 1932 Plymouth Sedan stripped down frame engine wheels After re-working engine constructed wooden frame body covered sheet metaL fenders head lights interior everything else salvaged old cars trucks local junkyard finished car truly extension himself $25000 total investment became pretty fair mechanic interest returned modeling also saved enough money purchase first radio kit first RC airplane made same mistake hundreds beginners make year Instead building high-wing easy-to-fly trainer made sleek looking low-wing scale job Most early attempts crashes fact took over two years worth airplanes equipment achieve first controlled flight hell never forget started engine Cleveland Luscombe Sedan switched radio launched climbed out straight slow gave little right rudder like times before Lo behold actually turned rightright tree did turn right thats what counted Remember homemade gas-tube radio compound escapements crude system todays standards Now radio worked attempted build latest RC helicopter design utilizing old Fox 35 engine throttle control would used bring blades up flying speed consisted geared mechanism screwed needle valve out project never completed however because initial test proved well-worn engine wouldnt lift heavy March 1980 65 1 aware Daves penchant big cardboard RC jobs first 13-ft beast 2 hp engine weighed 45 lbs flew escapements 1958 Dave flying cute 19-powered prototype Cricket never went production too skittish evidently Dave able converse photo Whirly Bird Daves first chopper g wu ing early prototypes before Whirly Bird went production four-bladed rotor head much less body project put aside important things Things like getting married raising family Dave married Pat Pendelton 1958 moved Bowling Green Ohio worked several electrical supply houses began learn finer points about electricity wiring repairing electric motors also Ohio hc achieved first complete radio-controlled flight Berkeley kit powered Fox 07 engine radio his-own design gas tube-type compound escapements Unfortunately flying alone friends believed him flew again next weekend snowing another perfect flight still no witness third weekend everyone come out him see done Murphys Law took over plane flew Out sight never found again Lots Daves models flew away like thatbut did everybody elses back 1963 Grays moved back Michigan hobby started pay itself took part-time job Glass City Models fabrica ting parts assembling pulse radio equipment Pat thought died went heaven way carried paid could ask Two years later lot good ideas financial backer Dave left Glass City Models started company called Airtrol Reworked secretely garage first year trying design electronic pulse-radio system would work better what available still bc sold reasonable price Within next year market during five years Dave experimen ting phases modeling RC cars autogiros Helicopters begait interest more people worldwide according magazines challenge taken up again prototypes made due difficulties setbacks other projects also pursued Projects like building grandfathers clock wifes birthday present scratch-built aid plans instructions using pine the aid plans instructions using pine cabinet gum popular gears gears shafts bearings hands carved out wood clock stands about 6 feet tall chimes hour beautifully finished dark mahogany color keeps excellent timeabsolutely amazing fact vas 9foot exact scale replica famous Pietenpol Air Camper Built exactly same way real plane built original plans built-up ribs wire-spoked whcels metal fittings cable controls thing didnt have 3-scale working model engine eventually sold wishes kept anyone knows its whereabouts hed like hear Airtrol began experimenting foam plastic airplanes built own vacuumforming machines didnt take long see potential foam construction left Airtrol form own business called Gramer Plastics partnership good friend named Jim MerrilL produced five foam airplane kits Three sailplanes Volksplane Twin Engine Bomberthat successfuL times couldnt keep up orders Another facet business forming foam blocks packaging products auto industry Unfortunately 1969 auto strikes stopped production okay though because now time work pet projectthe helicopter now prototypes beginning show some promise Reworked theory simpler easier would build attempt fly repair after inevitable crash Instead building asomplicated gear train connect engine main rotors mounted engine directly top rotor head torque reaction drive tail rotor made rotate simple string pulley system body just pine balsa wood frame held together Besides didnt have machine shop anyway summer 1970 making consis tent 20-and 30-second flights news started spread RC helicopter developed could controlled proven publicly 1970 RC show Cincinnati Ohio Model Airplane News took cover photograph Dave flying 40-powered yellow- and-gray hovering machine appear ed January 1971 issue As matter fact ifs still flyable condition will soon donated Smithsonian Air Space Museum will see along other worthy models made model aviation history Daves future soon change having money problems business Dewey Broberg president Du-Bro saw potential model helicopters asked buy manufacturing rights Dave Within several months Dave dissolved Gramer Plastics favor working Du-Bro further develop hclicopter So 1971 family also now three daughters made big move settled Mundelein Illinois about 10 miles South Du-Bro factory Wauconda Illinois first thing build another helicopter cxcept did couldnt make fly like original did fact wouldnt fly Nothing ever came easy Dave should start now time attempted hover helicopter would go crazy crash time crashed would break rotor blades would have carve new pair have ever tried make two identical airfoiled rotor blades would know exasperating could Finally out sheer desperation Dave tried using simple set flat blades worked Apparently original airfoil blades work ed perfectly identical slsape size weight Anything less just wouldnt make After obstacle still took years worth research development produce what now know Du-Bro Whirley Bird 505 first years Whirley Bird happy 66 Model Aviation Left Contemplating wing panel mammoth-sized HEROT monoplane Inspection noles root rib reveal 12 builtup ribs 24in chord Right Barebones clear pine fuselage Ain scale Instrument panel functionaltach calibrated engine compass radio off switch Thirteen wire spoked wheels caned seat 18in cowl beaten Out sheet aluminum A30in handcarved prop driveanother Gray invention because cardboard monsters Dave Wherever hc flew air shows malls shopping centers club fields trade shows hit show flew coast coast putting demonstrations made trip France fly distributors Europe Dave others experimenting withthe helicopterinthe USA DieterSehiucter doing same thing Germany Perhaps no will ever know made very first controlled flight since both testing prototypes constantly Dave ever first country achieve distinctive honor usually asked come wherever went said crashed anyone else Most other helicopters being tried time mechanically complicated crashed took designer week two make new parts fix again Daves model bit dust usually out flying again soon epoxy dry learning process long varied way get feel flying hang helicopter under large tripod swivel cable connected engines prop shaft An electric motor used bring blades up flying speed could learn control lateral movements fear capsizing way soon knew machine would fly leam tripod thats Whirley Bird achieved huge success thousands kits sold looked helicopter stay Dave began extensive new development program design bigger better flying machine outcome semi-scale Hughes 300 powered 134 Cu O& R engine looked like real helicopter easier fly original Whirley Bird Flight testing Daves main problems Either waited extremely calm day wind would affect else fly Frito-Lay Frito-Lay happens potato chip distributor across street Do- Bro sometimes big enough area warehouse safely fly Whenever Dave wanted fly demonstration test fly modelers newly completed hlicop ter went Frito-Lay flew around potato chips pretzels older men became fascinated Hughes bought first-time modeler did less average job constructing it did fly eventually became pretty good too time retired flying constantly always popping out Du-Bro parts advice months went word him day wife called said died auto mobile accident also said become attached helicopter during last couple years buried him Somewhere up heaven angel rotor blades Dave used test 0 & R engines back factory After installing engine test helicopter hed go Out back fire up lift helicopter hover day battery pack came loose tell out controls froze helicopter began slow steady ascent As fuel consumed lighter machine got higher went Soon just speck sky moving north down Fairfield Road Dave another guy hopped car chased waiting run out fuel came about 1 miles shop right farmers freshly plowed field Expecting see basket case found just landing gear blade holders bent went back shop cleaned up flew again Several weeks later radio malfunction put same chopper vertical dive completely destroyed hit half buried rock Since Hughes 300 Dave has designed built two helicoptersthe 40-powered Tn-Star Shark 60 became midwest area Director NRC HA Nation al R/C Helicopter Association Don Dewey editor RCM Grady Howard Bernie Murphy made up Rules Regula tions earning four different grade levels proficiency Unfortunately interest helicop ters seems decreasing Dave says helicopter contests have become like airplane pattern contests says~ Helicopters made close precision hovering flying maneuvers tearing up sky doing 1oops rolls Part Daves duties Du-Bro test evaluate new ideas products Du Bro4-6 Big Wheels prototype stage needed big airplane test Since -scale movement hadnt begun too big airplanes available use built out cardboard about week 9-foot span weighed about 15 lbs flew great Max 60 first laughed because never thought would get off ground day made its maiden flight pretty windy--about 10-12 mph cardboard brick rolled out about ten feet airborn After making 10-foot cardboard airplanes Cardboard new us Dave experimenting back 1958 made replacement wings some wing less 40-size models outdid himself once building 13-foot 45-lb monster powered 2-hp engine Now wheels worked plane flew something still bothering him prop big airplane like should have March 1980 67 Dave Gray could give wife grandfathers clock built aid instructions using pine cabinet gum-poplar gearsshafts bearings hands carved wood keeps excellent time Continued page 117 Invave asseimg bird semi-scale Hughes 300 powered 1s4 Cu ui-t engine tested warehouse across street An elderly gentleman bought hint loved much buried him 1979 Dave found time uor mis i,uugt up front 40 60 5- 6-in Big Wheels Forward re verse clutch brakes Too fast handle now has 36-in long Masseratti Series 200 such goodies working radiator disc brakes enclosed universal full differential During working hours dreams up endless string accessoriesball links example matter course just obtain extra stability Weight may also saved using cyanoacry late recommended kids accidentprone people refuse wear safety glasses nice touch finishing new ship might roll about cylinder sandpaper around round pencil Use gently shape hypothenuse gussets gentle inward curve cylinder can also used scallop inward formers turtledeck between stringers tissue will stick stringers final touch before finishing intermedi ate model add little soft balsa anywhere model looks like may problem finding something stick tissue such just behind engine cowling stabjoins fuselage wherever think might have bend covering material up 900 abut some comer Better add bit have awkward wrinkle-producing situ ation Sand finished structures 400 600 grit wet-or-dry paper eye rounding sharp edges might grab shrinking tissue such top wing ribs Attach covering brushed white glue thinned about 3040% water doing no time needed fit fairly flat Cover sharply-curved areas such noses wing tips tissue has sprayed until damp using hair-care atomizer Peck-Polymers tissue has good wet strength plane covered about two coats nitrate dope thinned 50-50 thinner should suffice Use colored tissue trim good habit get carefully reading articles studying plans types models get ideas can incorporate next models Steal shamelessly everyone has interesting approach Thats get build models reflect own person ality Good luck dont forget leave big enough hole front fuselage get -times-fuselage-length contest motor back plane ifs wound up PS Dont go flying field first removing warps over steam remember old adage little extra weight nose cures 90% flying ills Keep ideas outstanding pics coming Bill Warner 423-C San Vicente Blvd Santa Monica C4 90402 Brainstormer Schmalz continued page 67 12-in wide cockpit has unique functioning control panel includes tachometer calibrated engine clock tum-bank indi cator fuel-level gauge compass radio on-off switch Additional features include caned pilots seat 13-in wire spoked wheels 18-in aluminum cowl beaten out flat sheet 30-in hand-carved prop will used fly via Du-Bro Prop Drive unit thats folks meantime hes building RC race cars utilizing Prop Drive Unit again first model midget racer about 24 inches long Prop Drive Unit hig22-in prop fly withnot dinky little 11or 12-in prop Now know Du-Bro Prop Drive Unit bom Its actually modified gear train out Shark 60 helicopter reduc ing engine speed 2 times latest mammoth-sized airplane /2-scale 1918 HERGT monoplane built clear white pine wings works art Inspection holes 24-in root rib reveal 12 built-up ribs rib stitching just like real thing ONE SIZE FITS ALL FOR WINTER-PROJECT BUILDERS Jungmeister builds fast gets quickly part likedetailing Go way weight no problem flies best 13 lbs anyway FOR BIPLANE LOVERS agile Jungmeister has classic aerobatic biplane over 40 years Paint military civilian Bevol Howards one/ perhaps/ FOR QUARTER-SCALE BUFFS Like em big too big Bucker true /o scale 65 span itll fit car schneurle 60 up 90 works fine No gear-drives needed Bucker Jungmeister II kit custom-made signed Dave Platt available thru stores Sold direct give best price possible pay UPS shipping Complete kit $11900 four months latest NIk II Duellist design has established reputation thoroughly refined proven RIG twin ever Fast beautiful impressive yet completely safe slow speeds engine out balsa construction nave uIatt iv odels inc Send envelope detailed leaflet Charge cards welcome 6940 NW 15th St Plantation Fla 33313 Phone 305 587-4861 VISA March 1980 117 FOR CONTEST FANS record turning sport flyers scale-contest winners unbeaten anywhere Platt designs fly well have helped modelers get first trophy FOR SPORT FLYERS love flying will find new Jungmeister fun just below pain level Completely aerobatic slow realistic pace laughs rough fields Span 69 two similar 25 40 engines fl ?ELLZT U Complete kit$79OO 6MoDELS TO CHOOSE FROM 0 Dealer SELLER -IE CARDINAL SPORT Only $12995 4Chtflyel 2545 Size 53 WingSpan 2t-22 oz Loadint Very AenoSatic MO nOIIObIn tn0 jtfldOOf 00tpCSIty,f,OORSTP 0I 000, nI td k.ig 600.O0p,t0f.I0S0000t MO fldy 0000n aeMtnI.4 eat IDma leffisOiSn1 No bOjidjOal TD Hydraulic unit converts air driven retracts hydraulic operation H Adjustable give realistic re tract speeds s gear sag out landing collapse LOCKS three wheel types Complete required fortwo wheel ships two instructions included $8 POSTPAID IN US Qualified Dealer Inquiries Invited Sits ifl front powered either 40 60 engine has forward reverse capabilities clutch brakes uses Du-Bro 5-and 6-in big wheels Its really too fast handle throttle set open one-half way latest version Masseratti 250 Series 36-in long body will also incorporate disk brakes enclosed universal full differen tiaL radiator cool engine fully cambered front end Dave makes wood molds body brings work vacuum form out B S plastic Thats benefits has working Du- Bro During working hours Dave dreams up new better accessories us modelers things like Ball Links Kwik-Switch Mount Final Filter V-Tail Mixer Prop Drive Unit new 4-Turn Hatch Latch just name few just doesnt seem anything cant Hes accomplished RC pilot builder MODEL CONTEST CATEGORIES AIRCRAFT BOATS CARS ROCKETS designer Hes competent mechanic excellent machinist electrician carpenter Hes also rare types can use both head hands solve problem Theres thing cant very well cant ride airplane see gets air sick Safety Preston continued page 57 automobile recommend carry smallest amount can get tightly sealed can Invert can before put car make sure cap sealed transport within passenger compartment make sure leave windows open dont smoke Dont leave can gas parked car isa gas can market appears offer safety majority have seen think would worth SOUTHW EST modelers check Out goes name Explosafe within can cellular honeycomb-like structure expanded metal mesh known Explofoil claimed cellular structure will suppress explosion can itself very rugged has gasketed screw caps both discharge spout vent Although can manufactured Canada US distributor information can obtained US Marketing Division Explosafe America Inc 2081 Business Center Drive Suite 180 Irvine CA 92715 final word about use gasoline model aircraft should obvious No Smoking pit area around models Perhaps clubs would well advised establish special area pits flying fields would reserved gasoline fueled models 4ddress letters John Preston 7012 Elvira Court Falls Church V4 22042 OVER 100 MANUFACTURERS NEW KITS NEW PRODUCTS COMMERCIAL EXHIBITS LIVE DEMONSTRATIONS FREE FLIGHT U-CONTROL TRAINS Demonstrations SIX SPECIAL AWARDS AMA RAFFLE FREE PUBLIC PARKING PLASTICS Static DISCOUNT TICKETS Model Contest * Public Invited * * * * June 7th & 8th 1980 Womens Building Fair Park Dallas Texas 118 Model Aviation Iv FOR THE HYDRALOCK I. SELF5TICK MOUNTING 3 $2 CLIP AND 3 TWO FLOW U C0N~ dealer order direct Development Inc Box 7399 rk Manufacturers
Edition: Model Aviation - 1980/03
Page Numbers: 64, 65, 66, 67, 117, 118
Editors Note Occasionally space permits MA publishes personality subjects unusual people ofcourse should Heretofore magazines have preoccupied obviously famous people coincidentally perhaps happen wellknown manufacturers industry hobby flel4 include quiet achievers names seldonz ever hear has impressed us great years subject ofthis issues story Rather say point weve elected let text pictures captions unfold story say merely talented chap has profoundly affected things fly HOW times driving work havc wished could have stayed home putter new moder better yet wouldnt great have job actually paid design build tly various types airplanes helicopters along radio equip ment propulsion systems accessories Well last 16 years what Dave Gray has doingmaking hobby pay itself enjoying minute Dave recalls first airplane built back 1943 seven years old 25it version famous Hellcat making quite name itself overseas Unfortunately balsa wood scarce manufacturers resorted cardboard hardwood substitutions little rubber-powered planes fun build also very discouraging since glide angle resembled brick Dave took carving solid models forerunners todays plastic shelf models kits usually nothing several blocks wood 3-view drawing Men ideas com monplace field few possess rare gift consistently turn ing dreams reality Among Dave Gray notable vision invite share us inspiring story@Art Schmalz As became proficient balsa gliders rubber-powered models Dave found could design build own models achieve good better results what offered beginning stages uniquely interesting design career modeling After war family moved Clayton Michigan garage Dave found huge cardboard box loaded over 20 built-up rubber-powered airplanes old Rodgers engine well-used 36-in Stuka rebuilt flew such enormous success claims what really got him hooked modeling forties satisfied building flying gliders other free flights until came across comic strip called Tim Tylers Luck episode involved two boys inventor built radio-controlled plane little far-fetched boys used fly medicine mountain cabin save old mans life Although RC planes being experimented radio its infancy out reach nearly everyone able fly airplane wires actually control radio signals like science fiction back have became Daves ultimate dream family very poor modeling good inexpensive form entertainment Small rubber model kits could purchased l0 $350 big rubber- gas-powered free flights conserving scraps using parts airplane Dave could squeeze Out two planes same kit As school years passed became proficient cars boats welL desire build remote-controlled model led design several electric powered boats about 30 long could steered left right shore actuator escapements like ones read about model magazines Power escapement supplied hand-carried lantern battery through two ex tremely fine enamel covered copper wires about 30 feet long twisted together form long extension cord system worked well tried same method airplanes problem airplane keep turning continuously risk fatal chance running out wire Around 1953 interest free-flight helicop ters began grow first built magazine construction article didnt work way thought should designed 64 Model Aviation 0 rairisto photographer record event Dave flies 1971 Whiny Birdshades Igor Sikorsky derby place teetering around factory parktng us Dave perfecting Whirly Bird Dieter Schiuter Germany developing machineboth unknown other looked like 1910 Daytona Beach speedster Daves first used car 32 Plymouth stripped down sheet- metal- covered wooden frame fenders lights everything else scrounged junkie cars trucks What dreams turns reality own ultra-light indoor helicopters could fly across room made hover inches ceiling before lightly touching down again rotor blades rubber motor tubes interchangeable body designs also worked well tandem Successful projects reinforced ability design build own creations After high school Dave went work New York Central Railroad Track maintenance wasnt easiest job world supplied him little spending money least enough buy him first used car Naturally didnt work half time decided right build own Starting old 1932 Plymouth Sedan stripped down frame engine wheels After re-working engine constructed wooden frame body covered sheet metaL fenders head lights interior everything else salvaged old cars trucks local junkyard finished car truly extension himself $25000 total investment became pretty fair mechanic interest returned modeling also saved enough money purchase first radio kit first RC airplane made same mistake hundreds beginners make year Instead building high-wing easy-to-fly trainer made sleek looking low-wing scale job Most early attempts crashes fact took over two years worth airplanes equipment achieve first controlled flight hell never forget started engine Cleveland Luscombe Sedan switched radio launched climbed out straight slow gave little right rudder like times before Lo behold actually turned rightright tree did turn right thats what counted Remember homemade gas-tube radio compound escapements crude system todays standards Now radio worked attempted build latest RC helicopter design utilizing old Fox 35 engine throttle control would used bring blades up flying speed consisted geared mechanism screwed needle valve out project never completed however because initial test proved well-worn engine wouldnt lift heavy March 1980 65 1 aware Daves penchant big cardboard RC jobs first 13-ft beast 2 hp engine weighed 45 lbs flew escapements 1958 Dave flying cute 19-powered prototype Cricket never went production too skittish evidently Dave able converse photo Whirly Bird Daves first chopper g wu ing early prototypes before Whirly Bird went production four-bladed rotor head much less body project put aside important things Things like getting married raising family Dave married Pat Pendelton 1958 moved Bowling Green Ohio worked several electrical supply houses began learn finer points about electricity wiring repairing electric motors also Ohio hc achieved first complete radio-controlled flight Berkeley kit powered Fox 07 engine radio his-own design gas tube-type compound escapements Unfortunately flying alone friends believed him flew again next weekend snowing another perfect flight still no witness third weekend everyone come out him see done Murphys Law took over plane flew Out sight never found again Lots Daves models flew away like thatbut did everybody elses back 1963 Grays moved back Michigan hobby started pay itself took part-time job Glass City Models fabrica ting parts assembling pulse radio equipment Pat thought died went heaven way carried paid could ask Two years later lot good ideas financial backer Dave left Glass City Models started company called Airtrol Reworked secretely garage first year trying design electronic pulse-radio system would work better what available still bc sold reasonable price Within next year market during five years Dave experimen ting phases modeling RC cars autogiros Helicopters begait interest more people worldwide according magazines challenge taken up again prototypes made due difficulties setbacks other projects also pursued Projects like building grandfathers clock wifes birthday present scratch-built aid plans instructions using pine the aid plans instructions using pine cabinet gum popular gears gears shafts bearings hands carved out wood clock stands about 6 feet tall chimes hour beautifully finished dark mahogany color keeps excellent timeabsolutely amazing fact vas 9foot exact scale replica famous Pietenpol Air Camper Built exactly same way real plane built original plans built-up ribs wire-spoked whcels metal fittings cable controls thing didnt have 3-scale working model engine eventually sold wishes kept anyone knows its whereabouts hed like hear Airtrol began experimenting foam plastic airplanes built own vacuumforming machines didnt take long see potential foam construction left Airtrol form own business called Gramer Plastics partnership good friend named Jim MerrilL produced five foam airplane kits Three sailplanes Volksplane Twin Engine Bomberthat successfuL times couldnt keep up orders Another facet business forming foam blocks packaging products auto industry Unfortunately 1969 auto strikes stopped production okay though because now time work pet projectthe helicopter now prototypes beginning show some promise Reworked theory simpler easier would build attempt fly repair after inevitable crash Instead building asomplicated gear train connect engine main rotors mounted engine directly top rotor head torque reaction drive tail rotor made rotate simple string pulley system body just pine balsa wood frame held together Besides didnt have machine shop anyway summer 1970 making consis tent 20-and 30-second flights news started spread RC helicopter developed could controlled proven publicly 1970 RC show Cincinnati Ohio Model Airplane News took cover photograph Dave flying 40-powered yellow- and-gray hovering machine appear ed January 1971 issue As matter fact ifs still flyable condition will soon donated Smithsonian Air Space Museum will see along other worthy models made model aviation history Daves future soon change having money problems business Dewey Broberg president Du-Bro saw potential model helicopters asked buy manufacturing rights Dave Within several months Dave dissolved Gramer Plastics favor working Du-Bro further develop hclicopter So 1971 family also now three daughters made big move settled Mundelein Illinois about 10 miles South Du-Bro factory Wauconda Illinois first thing build another helicopter cxcept did couldnt make fly like original did fact wouldnt fly Nothing ever came easy Dave should start now time attempted hover helicopter would go crazy crash time crashed would break rotor blades would have carve new pair have ever tried make two identical airfoiled rotor blades would know exasperating could Finally out sheer desperation Dave tried using simple set flat blades worked Apparently original airfoil blades work ed perfectly identical slsape size weight Anything less just wouldnt make After obstacle still took years worth research development produce what now know Du-Bro Whirley Bird 505 first years Whirley Bird happy 66 Model Aviation Left Contemplating wing panel mammoth-sized HEROT monoplane Inspection noles root rib reveal 12 builtup ribs 24in chord Right Barebones clear pine fuselage Ain scale Instrument panel functionaltach calibrated engine compass radio off switch Thirteen wire spoked wheels caned seat 18in cowl beaten Out sheet aluminum A30in handcarved prop driveanother Gray invention because cardboard monsters Dave Wherever hc flew air shows malls shopping centers club fields trade shows hit show flew coast coast putting demonstrations made trip France fly distributors Europe Dave others experimenting withthe helicopterinthe USA DieterSehiucter doing same thing Germany Perhaps no will ever know made very first controlled flight since both testing prototypes constantly Dave ever first country achieve distinctive honor usually asked come wherever went said crashed anyone else Most other helicopters being tried time mechanically complicated crashed took designer week two make new parts fix again Daves model bit dust usually out flying again soon epoxy dry learning process long varied way get feel flying hang helicopter under large tripod swivel cable connected engines prop shaft An electric motor used bring blades up flying speed could learn control lateral movements fear capsizing way soon knew machine would fly leam tripod thats Whirley Bird achieved huge success thousands kits sold looked helicopter stay Dave began extensive new development program design bigger better flying machine outcome semi-scale Hughes 300 powered 134 Cu O& R engine looked like real helicopter easier fly original Whirley Bird Flight testing Daves main problems Either waited extremely calm day wind would affect else fly Frito-Lay Frito-Lay happens potato chip distributor across street Do- Bro sometimes big enough area warehouse safely fly Whenever Dave wanted fly demonstration test fly modelers newly completed hlicop ter went Frito-Lay flew around potato chips pretzels older men became fascinated Hughes bought first-time modeler did less average job constructing it did fly eventually became pretty good too time retired flying constantly always popping out Du-Bro parts advice months went word him day wife called said died auto mobile accident also said become attached helicopter during last couple years buried him Somewhere up heaven angel rotor blades Dave used test 0 & R engines back factory After installing engine test helicopter hed go Out back fire up lift helicopter hover day battery pack came loose tell out controls froze helicopter began slow steady ascent As fuel consumed lighter machine got higher went Soon just speck sky moving north down Fairfield Road Dave another guy hopped car chased waiting run out fuel came about 1 miles shop right farmers freshly plowed field Expecting see basket case found just landing gear blade holders bent went back shop cleaned up flew again Several weeks later radio malfunction put same chopper vertical dive completely destroyed hit half buried rock Since Hughes 300 Dave has designed built two helicoptersthe 40-powered Tn-Star Shark 60 became midwest area Director NRC HA Nation al R/C Helicopter Association Don Dewey editor RCM Grady Howard Bernie Murphy made up Rules Regula tions earning four different grade levels proficiency Unfortunately interest helicop ters seems decreasing Dave says helicopter contests have become like airplane pattern contests says~ Helicopters made close precision hovering flying maneuvers tearing up sky doing 1oops rolls Part Daves duties Du-Bro test evaluate new ideas products Du Bro4-6 Big Wheels prototype stage needed big airplane test Since -scale movement hadnt begun too big airplanes available use built out cardboard about week 9-foot span weighed about 15 lbs flew great Max 60 first laughed because never thought would get off ground day made its maiden flight pretty windy--about 10-12 mph cardboard brick rolled out about ten feet airborn After making 10-foot cardboard airplanes Cardboard new us Dave experimenting back 1958 made replacement wings some wing less 40-size models outdid himself once building 13-foot 45-lb monster powered 2-hp engine Now wheels worked plane flew something still bothering him prop big airplane like should have March 1980 67 Dave Gray could give wife grandfathers clock built aid instructions using pine cabinet gum-poplar gearsshafts bearings hands carved wood keeps excellent time Continued page 117 Invave asseimg bird semi-scale Hughes 300 powered 1s4 Cu ui-t engine tested warehouse across street An elderly gentleman bought hint loved much buried him 1979 Dave found time uor mis i,uugt up front 40 60 5- 6-in Big Wheels Forward re verse clutch brakes Too fast handle now has 36-in long Masseratti Series 200 such goodies working radiator disc brakes enclosed universal full differential During working hours dreams up endless string accessoriesball links example matter course just obtain extra stability Weight may also saved using cyanoacry late recommended kids accidentprone people refuse wear safety glasses nice touch finishing new ship might roll about cylinder sandpaper around round pencil Use gently shape hypothenuse gussets gentle inward curve cylinder can also used scallop inward formers turtledeck between stringers tissue will stick stringers final touch before finishing intermedi ate model add little soft balsa anywhere model looks like may problem finding something stick tissue such just behind engine cowling stabjoins fuselage wherever think might have bend covering material up 900 abut some comer Better add bit have awkward wrinkle-producing situ ation Sand finished structures 400 600 grit wet-or-dry paper eye rounding sharp edges might grab shrinking tissue such top wing ribs Attach covering brushed white glue thinned about 3040% water doing no time needed fit fairly flat Cover sharply-curved areas such noses wing tips tissue has sprayed until damp using hair-care atomizer Peck-Polymers tissue has good wet strength plane covered about two coats nitrate dope thinned 50-50 thinner should suffice Use colored tissue trim good habit get carefully reading articles studying plans types models get ideas can incorporate next models Steal shamelessly everyone has interesting approach Thats get build models reflect own person ality Good luck dont forget leave big enough hole front fuselage get -times-fuselage-length contest motor back plane ifs wound up PS Dont go flying field first removing warps over steam remember old adage little extra weight nose cures 90% flying ills Keep ideas outstanding pics coming Bill Warner 423-C San Vicente Blvd Santa Monica C4 90402 Brainstormer Schmalz continued page 67 12-in wide cockpit has unique functioning control panel includes tachometer calibrated engine clock tum-bank indi cator fuel-level gauge compass radio on-off switch Additional features include caned pilots seat 13-in wire spoked wheels 18-in aluminum cowl beaten out flat sheet 30-in hand-carved prop will used fly via Du-Bro Prop Drive unit thats folks meantime hes building RC race cars utilizing Prop Drive Unit again first model midget racer about 24 inches long Prop Drive Unit hig22-in prop fly withnot dinky little 11or 12-in prop Now know Du-Bro Prop Drive Unit bom Its actually modified gear train out Shark 60 helicopter reduc ing engine speed 2 times latest mammoth-sized airplane /2-scale 1918 HERGT monoplane built clear white pine wings works art Inspection holes 24-in root rib reveal 12 built-up ribs rib stitching just like real thing ONE SIZE FITS ALL FOR WINTER-PROJECT BUILDERS Jungmeister builds fast gets quickly part likedetailing Go way weight no problem flies best 13 lbs anyway FOR BIPLANE LOVERS agile Jungmeister has classic aerobatic biplane over 40 years Paint military civilian Bevol Howards one/ perhaps/ FOR QUARTER-SCALE BUFFS Like em big too big Bucker true /o scale 65 span itll fit car schneurle 60 up 90 works fine No gear-drives needed Bucker Jungmeister II kit custom-made signed Dave Platt available thru stores Sold direct give best price possible pay UPS shipping Complete kit $11900 four months latest NIk II Duellist design has established reputation thoroughly refined proven RIG twin ever Fast beautiful impressive yet completely safe slow speeds engine out balsa construction nave uIatt iv odels inc Send envelope detailed leaflet Charge cards welcome 6940 NW 15th St Plantation Fla 33313 Phone 305 587-4861 VISA March 1980 117 FOR CONTEST FANS record turning sport flyers scale-contest winners unbeaten anywhere Platt designs fly well have helped modelers get first trophy FOR SPORT FLYERS love flying will find new Jungmeister fun just below pain level Completely aerobatic slow realistic pace laughs rough fields Span 69 two similar 25 40 engines fl ?ELLZT U Complete kit$79OO 6MoDELS TO CHOOSE FROM 0 Dealer SELLER -IE CARDINAL SPORT Only $12995 4Chtflyel 2545 Size 53 WingSpan 2t-22 oz Loadint Very AenoSatic MO nOIIObIn tn0 jtfldOOf 00tpCSIty,f,OORSTP 0I 000, nI td k.ig 600.O0p,t0f.I0S0000t MO fldy 0000n aeMtnI.4 eat IDma leffisOiSn1 No bOjidjOal TD Hydraulic unit converts air driven retracts hydraulic operation H Adjustable give realistic re tract speeds s gear sag out landing collapse LOCKS three wheel types Complete required fortwo wheel ships two instructions included $8 POSTPAID IN US Qualified Dealer Inquiries Invited Sits ifl front powered either 40 60 engine has forward reverse capabilities clutch brakes uses Du-Bro 5-and 6-in big wheels Its really too fast handle throttle set open one-half way latest version Masseratti 250 Series 36-in long body will also incorporate disk brakes enclosed universal full differen tiaL radiator cool engine fully cambered front end Dave makes wood molds body brings work vacuum form out B S plastic Thats benefits has working Du- Bro During working hours Dave dreams up new better accessories us modelers things like Ball Links Kwik-Switch Mount Final Filter V-Tail Mixer Prop Drive Unit new 4-Turn Hatch Latch just name few just doesnt seem anything cant Hes accomplished RC pilot builder MODEL CONTEST CATEGORIES AIRCRAFT BOATS CARS ROCKETS designer Hes competent mechanic excellent machinist electrician carpenter Hes also rare types can use both head hands solve problem Theres thing cant very well cant ride airplane see gets air sick Safety Preston continued page 57 automobile recommend carry smallest amount can get tightly sealed can Invert can before put car make sure cap sealed transport within passenger compartment make sure leave windows open dont smoke Dont leave can gas parked car isa gas can market appears offer safety majority have seen think would worth SOUTHW EST modelers check Out goes name Explosafe within can cellular honeycomb-like structure expanded metal mesh known Explofoil claimed cellular structure will suppress explosion can itself very rugged has gasketed screw caps both discharge spout vent Although can manufactured Canada US distributor information can obtained US Marketing Division Explosafe America Inc 2081 Business Center Drive Suite 180 Irvine CA 92715 final word about use gasoline model aircraft should obvious No Smoking pit area around models Perhaps clubs would well advised establish special area pits flying fields would reserved gasoline fueled models 4ddress letters John Preston 7012 Elvira Court Falls Church V4 22042 OVER 100 MANUFACTURERS NEW KITS NEW PRODUCTS COMMERCIAL EXHIBITS LIVE DEMONSTRATIONS FREE FLIGHT U-CONTROL TRAINS Demonstrations SIX SPECIAL AWARDS AMA RAFFLE FREE PUBLIC PARKING PLASTICS Static DISCOUNT TICKETS Model Contest * Public Invited * * * * June 7th & 8th 1980 Womens Building Fair Park Dallas Texas 118 Model Aviation Iv FOR THE HYDRALOCK I. SELF5TICK MOUNTING 3 $2 CLIP AND 3 TWO FLOW U C0N~ dealer order direct Development Inc Box 7399 rk Manufacturers
Edition: Model Aviation - 1980/03
Page Numbers: 64, 65, 66, 67, 117, 118
Editors Note Occasionally space permits MA publishes personality subjects unusual people ofcourse should Heretofore magazines have preoccupied obviously famous people coincidentally perhaps happen wellknown manufacturers industry hobby flel4 include quiet achievers names seldonz ever hear has impressed us great years subject ofthis issues story Rather say point weve elected let text pictures captions unfold story say merely talented chap has profoundly affected things fly HOW times driving work havc wished could have stayed home putter new moder better yet wouldnt great have job actually paid design build tly various types airplanes helicopters along radio equip ment propulsion systems accessories Well last 16 years what Dave Gray has doingmaking hobby pay itself enjoying minute Dave recalls first airplane built back 1943 seven years old 25it version famous Hellcat making quite name itself overseas Unfortunately balsa wood scarce manufacturers resorted cardboard hardwood substitutions little rubber-powered planes fun build also very discouraging since glide angle resembled brick Dave took carving solid models forerunners todays plastic shelf models kits usually nothing several blocks wood 3-view drawing Men ideas com monplace field few possess rare gift consistently turn ing dreams reality Among Dave Gray notable vision invite share us inspiring story@Art Schmalz As became proficient balsa gliders rubber-powered models Dave found could design build own models achieve good better results what offered beginning stages uniquely interesting design career modeling After war family moved Clayton Michigan garage Dave found huge cardboard box loaded over 20 built-up rubber-powered airplanes old Rodgers engine well-used 36-in Stuka rebuilt flew such enormous success claims what really got him hooked modeling forties satisfied building flying gliders other free flights until came across comic strip called Tim Tylers Luck episode involved two boys inventor built radio-controlled plane little far-fetched boys used fly medicine mountain cabin save old mans life Although RC planes being experimented radio its infancy out reach nearly everyone able fly airplane wires actually control radio signals like science fiction back have became Daves ultimate dream family very poor modeling good inexpensive form entertainment Small rubber model kits could purchased l0 $350 big rubber- gas-powered free flights conserving scraps using parts airplane Dave could squeeze Out two planes same kit As school years passed became proficient cars boats welL desire build remote-controlled model led design several electric powered boats about 30 long could steered left right shore actuator escapements like ones read about model magazines Power escapement supplied hand-carried lantern battery through two ex tremely fine enamel covered copper wires about 30 feet long twisted together form long extension cord system worked well tried same method airplanes problem airplane keep turning continuously risk fatal chance running out wire Around 1953 interest free-flight helicop ters began grow first built magazine construction article didnt work way thought should designed 64 Model Aviation 0 rairisto photographer record event Dave flies 1971 Whiny Birdshades Igor Sikorsky derby place teetering around factory parktng us Dave perfecting Whirly Bird Dieter Schiuter Germany developing machineboth unknown other looked like 1910 Daytona Beach speedster Daves first used car 32 Plymouth stripped down sheet- metal- covered wooden frame fenders lights everything else scrounged junkie cars trucks What dreams turns reality own ultra-light indoor helicopters could fly across room made hover inches ceiling before lightly touching down again rotor blades rubber motor tubes interchangeable body designs also worked well tandem Successful projects reinforced ability design build own creations After high school Dave went work New York Central Railroad Track maintenance wasnt easiest job world supplied him little spending money least enough buy him first used car Naturally didnt work half time decided right build own Starting old 1932 Plymouth Sedan stripped down frame engine wheels After re-working engine constructed wooden frame body covered sheet metaL fenders head lights interior everything else salvaged old cars trucks local junkyard finished car truly extension himself $25000 total investment became pretty fair mechanic interest returned modeling also saved enough money purchase first radio kit first RC airplane made same mistake hundreds beginners make year Instead building high-wing easy-to-fly trainer made sleek looking low-wing scale job Most early attempts crashes fact took over two years worth airplanes equipment achieve first controlled flight hell never forget started engine Cleveland Luscombe Sedan switched radio launched climbed out straight slow gave little right rudder like times before Lo behold actually turned rightright tree did turn right thats what counted Remember homemade gas-tube radio compound escapements crude system todays standards Now radio worked attempted build latest RC helicopter design utilizing old Fox 35 engine throttle control would used bring blades up flying speed consisted geared mechanism screwed needle valve out project never completed however because initial test proved well-worn engine wouldnt lift heavy March 1980 65 1 aware Daves penchant big cardboard RC jobs first 13-ft beast 2 hp engine weighed 45 lbs flew escapements 1958 Dave flying cute 19-powered prototype Cricket never went production too skittish evidently Dave able converse photo Whirly Bird Daves first chopper g wu ing early prototypes before Whirly Bird went production four-bladed rotor head much less body project put aside important things Things like getting married raising family Dave married Pat Pendelton 1958 moved Bowling Green Ohio worked several electrical supply houses began learn finer points about electricity wiring repairing electric motors also Ohio hc achieved first complete radio-controlled flight Berkeley kit powered Fox 07 engine radio his-own design gas tube-type compound escapements Unfortunately flying alone friends believed him flew again next weekend snowing another perfect flight still no witness third weekend everyone come out him see done Murphys Law took over plane flew Out sight never found again Lots Daves models flew away like thatbut did everybody elses back 1963 Grays moved back Michigan hobby started pay itself took part-time job Glass City Models fabrica ting parts assembling pulse radio equipment Pat thought died went heaven way carried paid could ask Two years later lot good ideas financial backer Dave left Glass City Models started company called Airtrol Reworked secretely garage first year trying design electronic pulse-radio system would work better what available still bc sold reasonable price Within next year market during five years Dave experimen ting phases modeling RC cars autogiros Helicopters begait interest more people worldwide according magazines challenge taken up again prototypes made due difficulties setbacks other projects also pursued Projects like building grandfathers clock wifes birthday present scratch-built aid plans instructions using pine the aid plans instructions using pine cabinet gum popular gears gears shafts bearings hands carved out wood clock stands about 6 feet tall chimes hour beautifully finished dark mahogany color keeps excellent timeabsolutely amazing fact vas 9foot exact scale replica famous Pietenpol Air Camper Built exactly same way real plane built original plans built-up ribs wire-spoked whcels metal fittings cable controls thing didnt have 3-scale working model engine eventually sold wishes kept anyone knows its whereabouts hed like hear Airtrol began experimenting foam plastic airplanes built own vacuumforming machines didnt take long see potential foam construction left Airtrol form own business called Gramer Plastics partnership good friend named Jim MerrilL produced five foam airplane kits Three sailplanes Volksplane Twin Engine Bomberthat successfuL times couldnt keep up orders Another facet business forming foam blocks packaging products auto industry Unfortunately 1969 auto strikes stopped production okay though because now time work pet projectthe helicopter now prototypes beginning show some promise Reworked theory simpler easier would build attempt fly repair after inevitable crash Instead building asomplicated gear train connect engine main rotors mounted engine directly top rotor head torque reaction drive tail rotor made rotate simple string pulley system body just pine balsa wood frame held together Besides didnt have machine shop anyway summer 1970 making consis tent 20-and 30-second flights news started spread RC helicopter developed could controlled proven publicly 1970 RC show Cincinnati Ohio Model Airplane News took cover photograph Dave flying 40-powered yellow- and-gray hovering machine appear ed January 1971 issue As matter fact ifs still flyable condition will soon donated Smithsonian Air Space Museum will see along other worthy models made model aviation history Daves future soon change having money problems business Dewey Broberg president Du-Bro saw potential model helicopters asked buy manufacturing rights Dave Within several months Dave dissolved Gramer Plastics favor working Du-Bro further develop hclicopter So 1971 family also now three daughters made big move settled Mundelein Illinois about 10 miles South Du-Bro factory Wauconda Illinois first thing build another helicopter cxcept did couldnt make fly like original did fact wouldnt fly Nothing ever came easy Dave should start now time attempted hover helicopter would go crazy crash time crashed would break rotor blades would have carve new pair have ever tried make two identical airfoiled rotor blades would know exasperating could Finally out sheer desperation Dave tried using simple set flat blades worked Apparently original airfoil blades work ed perfectly identical slsape size weight Anything less just wouldnt make After obstacle still took years worth research development produce what now know Du-Bro Whirley Bird 505 first years Whirley Bird happy 66 Model Aviation Left Contemplating wing panel mammoth-sized HEROT monoplane Inspection noles root rib reveal 12 builtup ribs 24in chord Right Barebones clear pine fuselage Ain scale Instrument panel functionaltach calibrated engine compass radio off switch Thirteen wire spoked wheels caned seat 18in cowl beaten Out sheet aluminum A30in handcarved prop driveanother Gray invention because cardboard monsters Dave Wherever hc flew air shows malls shopping centers club fields trade shows hit show flew coast coast putting demonstrations made trip France fly distributors Europe Dave others experimenting withthe helicopterinthe USA DieterSehiucter doing same thing Germany Perhaps no will ever know made very first controlled flight since both testing prototypes constantly Dave ever first country achieve distinctive honor usually asked come wherever went said crashed anyone else Most other helicopters being tried time mechanically complicated crashed took designer week two make new parts fix again Daves model bit dust usually out flying again soon epoxy dry learning process long varied way get feel flying hang helicopter under large tripod swivel cable connected engines prop shaft An electric motor used bring blades up flying speed could learn control lateral movements fear capsizing way soon knew machine would fly leam tripod thats Whirley Bird achieved huge success thousands kits sold looked helicopter stay Dave began extensive new development program design bigger better flying machine outcome semi-scale Hughes 300 powered 134 Cu O& R engine looked like real helicopter easier fly original Whirley Bird Flight testing Daves main problems Either waited extremely calm day wind would affect else fly Frito-Lay Frito-Lay happens potato chip distributor across street Do- Bro sometimes big enough area warehouse safely fly Whenever Dave wanted fly demonstration test fly modelers newly completed hlicop ter went Frito-Lay flew around potato chips pretzels older men became fascinated Hughes bought first-time modeler did less average job constructing it did fly eventually became pretty good too time retired flying constantly always popping out Du-Bro parts advice months went word him day wife called said died auto mobile accident also said become attached helicopter during last couple years buried him Somewhere up heaven angel rotor blades Dave used test 0 & R engines back factory After installing engine test helicopter hed go Out back fire up lift helicopter hover day battery pack came loose tell out controls froze helicopter began slow steady ascent As fuel consumed lighter machine got higher went Soon just speck sky moving north down Fairfield Road Dave another guy hopped car chased waiting run out fuel came about 1 miles shop right farmers freshly plowed field Expecting see basket case found just landing gear blade holders bent went back shop cleaned up flew again Several weeks later radio malfunction put same chopper vertical dive completely destroyed hit half buried rock Since Hughes 300 Dave has designed built two helicoptersthe 40-powered Tn-Star Shark 60 became midwest area Director NRC HA Nation al R/C Helicopter Association Don Dewey editor RCM Grady Howard Bernie Murphy made up Rules Regula tions earning four different grade levels proficiency Unfortunately interest helicop ters seems decreasing Dave says helicopter contests have become like airplane pattern contests says~ Helicopters made close precision hovering flying maneuvers tearing up sky doing 1oops rolls Part Daves duties Du-Bro test evaluate new ideas products Du Bro4-6 Big Wheels prototype stage needed big airplane test Since -scale movement hadnt begun too big airplanes available use built out cardboard about week 9-foot span weighed about 15 lbs flew great Max 60 first laughed because never thought would get off ground day made its maiden flight pretty windy--about 10-12 mph cardboard brick rolled out about ten feet airborn After making 10-foot cardboard airplanes Cardboard new us Dave experimenting back 1958 made replacement wings some wing less 40-size models outdid himself once building 13-foot 45-lb monster powered 2-hp engine Now wheels worked plane flew something still bothering him prop big airplane like should have March 1980 67 Dave Gray could give wife grandfathers clock built aid instructions using pine cabinet gum-poplar gearsshafts bearings hands carved wood keeps excellent time Continued page 117 Invave asseimg bird semi-scale Hughes 300 powered 1s4 Cu ui-t engine tested warehouse across street An elderly gentleman bought hint loved much buried him 1979 Dave found time uor mis i,uugt up front 40 60 5- 6-in Big Wheels Forward re verse clutch brakes Too fast handle now has 36-in long Masseratti Series 200 such goodies working radiator disc brakes enclosed universal full differential During working hours dreams up endless string accessoriesball links example matter course just obtain extra stability Weight may also saved using cyanoacry late recommended kids accidentprone people refuse wear safety glasses nice touch finishing new ship might roll about cylinder sandpaper around round pencil Use gently shape hypothenuse gussets gentle inward curve cylinder can also used scallop inward formers turtledeck between stringers tissue will stick stringers final touch before finishing intermedi ate model add little soft balsa anywhere model looks like may problem finding something stick tissue such just behind engine cowling stabjoins fuselage wherever think might have bend covering material up 900 abut some comer Better add bit have awkward wrinkle-producing situ ation Sand finished structures 400 600 grit wet-or-dry paper eye rounding sharp edges might grab shrinking tissue such top wing ribs Attach covering brushed white glue thinned about 3040% water doing no time needed fit fairly flat Cover sharply-curved areas such noses wing tips tissue has sprayed until damp using hair-care atomizer Peck-Polymers tissue has good wet strength plane covered about two coats nitrate dope thinned 50-50 thinner should suffice Use colored tissue trim good habit get carefully reading articles studying plans types models get ideas can incorporate next models Steal shamelessly everyone has interesting approach Thats get build models reflect own person ality Good luck dont forget leave big enough hole front fuselage get -times-fuselage-length contest motor back plane ifs wound up PS Dont go flying field first removing warps over steam remember old adage little extra weight nose cures 90% flying ills Keep ideas outstanding pics coming Bill Warner 423-C San Vicente Blvd Santa Monica C4 90402 Brainstormer Schmalz continued page 67 12-in wide cockpit has unique functioning control panel includes tachometer calibrated engine clock tum-bank indi cator fuel-level gauge compass radio on-off switch Additional features include caned pilots seat 13-in wire spoked wheels 18-in aluminum cowl beaten out flat sheet 30-in hand-carved prop will used fly via Du-Bro Prop Drive unit thats folks meantime hes building RC race cars utilizing Prop Drive Unit again first model midget racer about 24 inches long Prop Drive Unit hig22-in prop fly withnot dinky little 11or 12-in prop Now know Du-Bro Prop Drive Unit bom Its actually modified gear train out Shark 60 helicopter reduc ing engine speed 2 times latest mammoth-sized airplane /2-scale 1918 HERGT monoplane built clear white pine wings works art Inspection holes 24-in root rib reveal 12 built-up ribs rib stitching just like real thing ONE SIZE FITS ALL FOR WINTER-PROJECT BUILDERS Jungmeister builds fast gets quickly part likedetailing Go way weight no problem flies best 13 lbs anyway FOR BIPLANE LOVERS agile Jungmeister has classic aerobatic biplane over 40 years Paint military civilian Bevol Howards one/ perhaps/ FOR QUARTER-SCALE BUFFS Like em big too big Bucker true /o scale 65 span itll fit car schneurle 60 up 90 works fine No gear-drives needed Bucker Jungmeister II kit custom-made signed Dave Platt available thru stores Sold direct give best price possible pay UPS shipping Complete kit $11900 four months latest NIk II Duellist design has established reputation thoroughly refined proven RIG twin ever Fast beautiful impressive yet completely safe slow speeds engine out balsa construction nave uIatt iv odels inc Send envelope detailed leaflet Charge cards welcome 6940 NW 15th St Plantation Fla 33313 Phone 305 587-4861 VISA March 1980 117 FOR CONTEST FANS record turning sport flyers scale-contest winners unbeaten anywhere Platt designs fly well have helped modelers get first trophy FOR SPORT FLYERS love flying will find new Jungmeister fun just below pain level Completely aerobatic slow realistic pace laughs rough fields Span 69 two similar 25 40 engines fl ?ELLZT U Complete kit$79OO 6MoDELS TO CHOOSE FROM 0 Dealer SELLER -IE CARDINAL SPORT Only $12995 4Chtflyel 2545 Size 53 WingSpan 2t-22 oz Loadint Very AenoSatic MO nOIIObIn tn0 jtfldOOf 00tpCSIty,f,OORSTP 0I 000, nI td k.ig 600.O0p,t0f.I0S0000t MO fldy 0000n aeMtnI.4 eat IDma leffisOiSn1 No bOjidjOal TD Hydraulic unit converts air driven retracts hydraulic operation H Adjustable give realistic re tract speeds s gear sag out landing collapse LOCKS three wheel types Complete required fortwo wheel ships two instructions included $8 POSTPAID IN US Qualified Dealer Inquiries Invited Sits ifl front powered either 40 60 engine has forward reverse capabilities clutch brakes uses Du-Bro 5-and 6-in big wheels Its really too fast handle throttle set open one-half way latest version Masseratti 250 Series 36-in long body will also incorporate disk brakes enclosed universal full differen tiaL radiator cool engine fully cambered front end Dave makes wood molds body brings work vacuum form out B S plastic Thats benefits has working Du- Bro During working hours Dave dreams up new better accessories us modelers things like Ball Links Kwik-Switch Mount Final Filter V-Tail Mixer Prop Drive Unit new 4-Turn Hatch Latch just name few just doesnt seem anything cant Hes accomplished RC pilot builder MODEL CONTEST CATEGORIES AIRCRAFT BOATS CARS ROCKETS designer Hes competent mechanic excellent machinist electrician carpenter Hes also rare types can use both head hands solve problem Theres thing cant very well cant ride airplane see gets air sick Safety Preston continued page 57 automobile recommend carry smallest amount can get tightly sealed can Invert can before put car make sure cap sealed transport within passenger compartment make sure leave windows open dont smoke Dont leave can gas parked car isa gas can market appears offer safety majority have seen think would worth SOUTHW EST modelers check Out goes name Explosafe within can cellular honeycomb-like structure expanded metal mesh known Explofoil claimed cellular structure will suppress explosion can itself very rugged has gasketed screw caps both discharge spout vent Although can manufactured Canada US distributor information can obtained US Marketing Division Explosafe America Inc 2081 Business Center Drive Suite 180 Irvine CA 92715 final word about use gasoline model aircraft should obvious No Smoking pit area around models Perhaps clubs would well advised establish special area pits flying fields would reserved gasoline fueled models 4ddress letters John Preston 7012 Elvira Court Falls Church V4 22042 OVER 100 MANUFACTURERS NEW KITS NEW PRODUCTS COMMERCIAL EXHIBITS LIVE DEMONSTRATIONS FREE FLIGHT U-CONTROL TRAINS Demonstrations SIX SPECIAL AWARDS AMA RAFFLE FREE PUBLIC PARKING PLASTICS Static DISCOUNT TICKETS Model Contest * Public Invited * * * * June 7th & 8th 1980 Womens Building Fair Park Dallas Texas 118 Model Aviation Iv FOR THE HYDRALOCK I. SELF5TICK MOUNTING 3 $2 CLIP AND 3 TWO FLOW U C0N~ dealer order direct Development Inc Box 7399 rk Manufacturers
Edition: Model Aviation - 1980/03
Page Numbers: 64, 65, 66, 67, 117, 118
Editors Note Occasionally space permits MA publishes personality subjects unusual people ofcourse should Heretofore magazines have preoccupied obviously famous people coincidentally perhaps happen wellknown manufacturers industry hobby flel4 include quiet achievers names seldonz ever hear has impressed us great years subject ofthis issues story Rather say point weve elected let text pictures captions unfold story say merely talented chap has profoundly affected things fly HOW times driving work havc wished could have stayed home putter new moder better yet wouldnt great have job actually paid design build tly various types airplanes helicopters along radio equip ment propulsion systems accessories Well last 16 years what Dave Gray has doingmaking hobby pay itself enjoying minute Dave recalls first airplane built back 1943 seven years old 25it version famous Hellcat making quite name itself overseas Unfortunately balsa wood scarce manufacturers resorted cardboard hardwood substitutions little rubber-powered planes fun build also very discouraging since glide angle resembled brick Dave took carving solid models forerunners todays plastic shelf models kits usually nothing several blocks wood 3-view drawing Men ideas com monplace field few possess rare gift consistently turn ing dreams reality Among Dave Gray notable vision invite share us inspiring story@Art Schmalz As became proficient balsa gliders rubber-powered models Dave found could design build own models achieve good better results what offered beginning stages uniquely interesting design career modeling After war family moved Clayton Michigan garage Dave found huge cardboard box loaded over 20 built-up rubber-powered airplanes old Rodgers engine well-used 36-in Stuka rebuilt flew such enormous success claims what really got him hooked modeling forties satisfied building flying gliders other free flights until came across comic strip called Tim Tylers Luck episode involved two boys inventor built radio-controlled plane little far-fetched boys used fly medicine mountain cabin save old mans life Although RC planes being experimented radio its infancy out reach nearly everyone able fly airplane wires actually control radio signals like science fiction back have became Daves ultimate dream family very poor modeling good inexpensive form entertainment Small rubber model kits could purchased l0 $350 big rubber- gas-powered free flights conserving scraps using parts airplane Dave could squeeze Out two planes same kit As school years passed became proficient cars boats welL desire build remote-controlled model led design several electric powered boats about 30 long could steered left right shore actuator escapements like ones read about model magazines Power escapement supplied hand-carried lantern battery through two ex tremely fine enamel covered copper wires about 30 feet long twisted together form long extension cord system worked well tried same method airplanes problem airplane keep turning continuously risk fatal chance running out wire Around 1953 interest free-flight helicop ters began grow first built magazine construction article didnt work way thought should designed 64 Model Aviation 0 rairisto photographer record event Dave flies 1971 Whiny Birdshades Igor Sikorsky derby place teetering around factory parktng us Dave perfecting Whirly Bird Dieter Schiuter Germany developing machineboth unknown other looked like 1910 Daytona Beach speedster Daves first used car 32 Plymouth stripped down sheet- metal- covered wooden frame fenders lights everything else scrounged junkie cars trucks What dreams turns reality own ultra-light indoor helicopters could fly across room made hover inches ceiling before lightly touching down again rotor blades rubber motor tubes interchangeable body designs also worked well tandem Successful projects reinforced ability design build own creations After high school Dave went work New York Central Railroad Track maintenance wasnt easiest job world supplied him little spending money least enough buy him first used car Naturally didnt work half time decided right build own Starting old 1932 Plymouth Sedan stripped down frame engine wheels After re-working engine constructed wooden frame body covered sheet metaL fenders head lights interior everything else salvaged old cars trucks local junkyard finished car truly extension himself $25000 total investment became pretty fair mechanic interest returned modeling also saved enough money purchase first radio kit first RC airplane made same mistake hundreds beginners make year Instead building high-wing easy-to-fly trainer made sleek looking low-wing scale job Most early attempts crashes fact took over two years worth airplanes equipment achieve first controlled flight hell never forget started engine Cleveland Luscombe Sedan switched radio launched climbed out straight slow gave little right rudder like times before Lo behold actually turned rightright tree did turn right thats what counted Remember homemade gas-tube radio compound escapements crude system todays standards Now radio worked attempted build latest RC helicopter design utilizing old Fox 35 engine throttle control would used bring blades up flying speed consisted geared mechanism screwed needle valve out project never completed however because initial test proved well-worn engine wouldnt lift heavy March 1980 65 1 aware Daves penchant big cardboard RC jobs first 13-ft beast 2 hp engine weighed 45 lbs flew escapements 1958 Dave flying cute 19-powered prototype Cricket never went production too skittish evidently Dave able converse photo Whirly Bird Daves first chopper g wu ing early prototypes before Whirly Bird went production four-bladed rotor head much less body project put aside important things Things like getting married raising family Dave married Pat Pendelton 1958 moved Bowling Green Ohio worked several electrical supply houses began learn finer points about electricity wiring repairing electric motors also Ohio hc achieved first complete radio-controlled flight Berkeley kit powered Fox 07 engine radio his-own design gas tube-type compound escapements Unfortunately flying alone friends believed him flew again next weekend snowing another perfect flight still no witness third weekend everyone come out him see done Murphys Law took over plane flew Out sight never found again Lots Daves models flew away like thatbut did everybody elses back 1963 Grays moved back Michigan hobby started pay itself took part-time job Glass City Models fabrica ting parts assembling pulse radio equipment Pat thought died went heaven way carried paid could ask Two years later lot good ideas financial backer Dave left Glass City Models started company called Airtrol Reworked secretely garage first year trying design electronic pulse-radio system would work better what available still bc sold reasonable price Within next year market during five years Dave experimen ting phases modeling RC cars autogiros Helicopters begait interest more people worldwide according magazines challenge taken up again prototypes made due difficulties setbacks other projects also pursued Projects like building grandfathers clock wifes birthday present scratch-built aid plans instructions using pine the aid plans instructions using pine cabinet gum popular gears gears shafts bearings hands carved out wood clock stands about 6 feet tall chimes hour beautifully finished dark mahogany color keeps excellent timeabsolutely amazing fact vas 9foot exact scale replica famous Pietenpol Air Camper Built exactly same way real plane built original plans built-up ribs wire-spoked whcels metal fittings cable controls thing didnt have 3-scale working model engine eventually sold wishes kept anyone knows its whereabouts hed like hear Airtrol began experimenting foam plastic airplanes built own vacuumforming machines didnt take long see potential foam construction left Airtrol form own business called Gramer Plastics partnership good friend named Jim MerrilL produced five foam airplane kits Three sailplanes Volksplane Twin Engine Bomberthat successfuL times couldnt keep up orders Another facet business forming foam blocks packaging products auto industry Unfortunately 1969 auto strikes stopped production okay though because now time work pet projectthe helicopter now prototypes beginning show some promise Reworked theory simpler easier would build attempt fly repair after inevitable crash Instead building asomplicated gear train connect engine main rotors mounted engine directly top rotor head torque reaction drive tail rotor made rotate simple string pulley system body just pine balsa wood frame held together Besides didnt have machine shop anyway summer 1970 making consis tent 20-and 30-second flights news started spread RC helicopter developed could controlled proven publicly 1970 RC show Cincinnati Ohio Model Airplane News took cover photograph Dave flying 40-powered yellow- and-gray hovering machine appear ed January 1971 issue As matter fact ifs still flyable condition will soon donated Smithsonian Air Space Museum will see along other worthy models made model aviation history Daves future soon change having money problems business Dewey Broberg president Du-Bro saw potential model helicopters asked buy manufacturing rights Dave Within several months Dave dissolved Gramer Plastics favor working Du-Bro further develop hclicopter So 1971 family also now three daughters made big move settled Mundelein Illinois about 10 miles South Du-Bro factory Wauconda Illinois first thing build another helicopter cxcept did couldnt make fly like original did fact wouldnt fly Nothing ever came easy Dave should start now time attempted hover helicopter would go crazy crash time crashed would break rotor blades would have carve new pair have ever tried make two identical airfoiled rotor blades would know exasperating could Finally out sheer desperation Dave tried using simple set flat blades worked Apparently original airfoil blades work ed perfectly identical slsape size weight Anything less just wouldnt make After obstacle still took years worth research development produce what now know Du-Bro Whirley Bird 505 first years Whirley Bird happy 66 Model Aviation Left Contemplating wing panel mammoth-sized HEROT monoplane Inspection noles root rib reveal 12 builtup ribs 24in chord Right Barebones clear pine fuselage Ain scale Instrument panel functionaltach calibrated engine compass radio off switch Thirteen wire spoked wheels caned seat 18in cowl beaten Out sheet aluminum A30in handcarved prop driveanother Gray invention because cardboard monsters Dave Wherever hc flew air shows malls shopping centers club fields trade shows hit show flew coast coast putting demonstrations made trip France fly distributors Europe Dave others experimenting withthe helicopterinthe USA DieterSehiucter doing same thing Germany Perhaps no will ever know made very first controlled flight since both testing prototypes constantly Dave ever first country achieve distinctive honor usually asked come wherever went said crashed anyone else Most other helicopters being tried time mechanically complicated crashed took designer week two make new parts fix again Daves model bit dust usually out flying again soon epoxy dry learning process long varied way get feel flying hang helicopter under large tripod swivel cable connected engines prop shaft An electric motor used bring blades up flying speed could learn control lateral movements fear capsizing way soon knew machine would fly leam tripod thats Whirley Bird achieved huge success thousands kits sold looked helicopter stay Dave began extensive new development program design bigger better flying machine outcome semi-scale Hughes 300 powered 134 Cu O& R engine looked like real helicopter easier fly original Whirley Bird Flight testing Daves main problems Either waited extremely calm day wind would affect else fly Frito-Lay Frito-Lay happens potato chip distributor across street Do- Bro sometimes big enough area warehouse safely fly Whenever Dave wanted fly demonstration test fly modelers newly completed hlicop ter went Frito-Lay flew around potato chips pretzels older men became fascinated Hughes bought first-time modeler did less average job constructing it did fly eventually became pretty good too time retired flying constantly always popping out Du-Bro parts advice months went word him day wife called said died auto mobile accident also said become attached helicopter during last couple years buried him Somewhere up heaven angel rotor blades Dave used test 0 & R engines back factory After installing engine test helicopter hed go Out back fire up lift helicopter hover day battery pack came loose tell out controls froze helicopter began slow steady ascent As fuel consumed lighter machine got higher went Soon just speck sky moving north down Fairfield Road Dave another guy hopped car chased waiting run out fuel came about 1 miles shop right farmers freshly plowed field Expecting see basket case found just landing gear blade holders bent went back shop cleaned up flew again Several weeks later radio malfunction put same chopper vertical dive completely destroyed hit half buried rock Since Hughes 300 Dave has designed built two helicoptersthe 40-powered Tn-Star Shark 60 became midwest area Director NRC HA Nation al R/C Helicopter Association Don Dewey editor RCM Grady Howard Bernie Murphy made up Rules Regula tions earning four different grade levels proficiency Unfortunately interest helicop ters seems decreasing Dave says helicopter contests have become like airplane pattern contests says~ Helicopters made close precision hovering flying maneuvers tearing up sky doing 1oops rolls Part Daves duties Du-Bro test evaluate new ideas products Du Bro4-6 Big Wheels prototype stage needed big airplane test Since -scale movement hadnt begun too big airplanes available use built out cardboard about week 9-foot span weighed about 15 lbs flew great Max 60 first laughed because never thought would get off ground day made its maiden flight pretty windy--about 10-12 mph cardboard brick rolled out about ten feet airborn After making 10-foot cardboard airplanes Cardboard new us Dave experimenting back 1958 made replacement wings some wing less 40-size models outdid himself once building 13-foot 45-lb monster powered 2-hp engine Now wheels worked plane flew something still bothering him prop big airplane like should have March 1980 67 Dave Gray could give wife grandfathers clock built aid instructions using pine cabinet gum-poplar gearsshafts bearings hands carved wood keeps excellent time Continued page 117 Invave asseimg bird semi-scale Hughes 300 powered 1s4 Cu ui-t engine tested warehouse across street An elderly gentleman bought hint loved much buried him 1979 Dave found time uor mis i,uugt up front 40 60 5- 6-in Big Wheels Forward re verse clutch brakes Too fast handle now has 36-in long Masseratti Series 200 such goodies working radiator disc brakes enclosed universal full differential During working hours dreams up endless string accessoriesball links example matter course just obtain extra stability Weight may also saved using cyanoacry late recommended kids accidentprone people refuse wear safety glasses nice touch finishing new ship might roll about cylinder sandpaper around round pencil Use gently shape hypothenuse gussets gentle inward curve cylinder can also used scallop inward formers turtledeck between stringers tissue will stick stringers final touch before finishing intermedi ate model add little soft balsa anywhere model looks like may problem finding something stick tissue such just behind engine cowling stabjoins fuselage wherever think might have bend covering material up 900 abut some comer Better add bit have awkward wrinkle-producing situ ation Sand finished structures 400 600 grit wet-or-dry paper eye rounding sharp edges might grab shrinking tissue such top wing ribs Attach covering brushed white glue thinned about 3040% water doing no time needed fit fairly flat Cover sharply-curved areas such noses wing tips tissue has sprayed until damp using hair-care atomizer Peck-Polymers tissue has good wet strength plane covered about two coats nitrate dope thinned 50-50 thinner should suffice Use colored tissue trim good habit get carefully reading articles studying plans types models get ideas can incorporate next models Steal shamelessly everyone has interesting approach Thats get build models reflect own person ality Good luck dont forget leave big enough hole front fuselage get -times-fuselage-length contest motor back plane ifs wound up PS Dont go flying field first removing warps over steam remember old adage little extra weight nose cures 90% flying ills Keep ideas outstanding pics coming Bill Warner 423-C San Vicente Blvd Santa Monica C4 90402 Brainstormer Schmalz continued page 67 12-in wide cockpit has unique functioning control panel includes tachometer calibrated engine clock tum-bank indi cator fuel-level gauge compass radio on-off switch Additional features include caned pilots seat 13-in wire spoked wheels 18-in aluminum cowl beaten out flat sheet 30-in hand-carved prop will used fly via Du-Bro Prop Drive unit thats folks meantime hes building RC race cars utilizing Prop Drive Unit again first model midget racer about 24 inches long Prop Drive Unit hig22-in prop fly withnot dinky little 11or 12-in prop Now know Du-Bro Prop Drive Unit bom Its actually modified gear train out Shark 60 helicopter reduc ing engine speed 2 times latest mammoth-sized airplane /2-scale 1918 HERGT monoplane built clear white pine wings works art Inspection holes 24-in root rib reveal 12 built-up ribs rib stitching just like real thing ONE SIZE FITS ALL FOR WINTER-PROJECT BUILDERS Jungmeister builds fast gets quickly part likedetailing Go way weight no problem flies best 13 lbs anyway FOR BIPLANE LOVERS agile Jungmeister has classic aerobatic biplane over 40 years Paint military civilian Bevol Howards one/ perhaps/ FOR QUARTER-SCALE BUFFS Like em big too big Bucker true /o scale 65 span itll fit car schneurle 60 up 90 works fine No gear-drives needed Bucker Jungmeister II kit custom-made signed Dave Platt available thru stores Sold direct give best price possible pay UPS shipping Complete kit $11900 four months latest NIk II Duellist design has established reputation thoroughly refined proven RIG twin ever Fast beautiful impressive yet completely safe slow speeds engine out balsa construction nave uIatt iv odels inc Send envelope detailed leaflet Charge cards welcome 6940 NW 15th St Plantation Fla 33313 Phone 305 587-4861 VISA March 1980 117 FOR CONTEST FANS record turning sport flyers scale-contest winners unbeaten anywhere Platt designs fly well have helped modelers get first trophy FOR SPORT FLYERS love flying will find new Jungmeister fun just below pain level Completely aerobatic slow realistic pace laughs rough fields Span 69 two similar 25 40 engines fl ?ELLZT U Complete kit$79OO 6MoDELS TO CHOOSE FROM 0 Dealer SELLER -IE CARDINAL SPORT Only $12995 4Chtflyel 2545 Size 53 WingSpan 2t-22 oz Loadint Very AenoSatic MO nOIIObIn tn0 jtfldOOf 00tpCSIty,f,OORSTP 0I 000, nI td k.ig 600.O0p,t0f.I0S0000t MO fldy 0000n aeMtnI.4 eat IDma leffisOiSn1 No bOjidjOal TD Hydraulic unit converts air driven retracts hydraulic operation H Adjustable give realistic re tract speeds s gear sag out landing collapse LOCKS three wheel types Complete required fortwo wheel ships two instructions included $8 POSTPAID IN US Qualified Dealer Inquiries Invited Sits ifl front powered either 40 60 engine has forward reverse capabilities clutch brakes uses Du-Bro 5-and 6-in big wheels Its really too fast handle throttle set open one-half way latest version Masseratti 250 Series 36-in long body will also incorporate disk brakes enclosed universal full differen tiaL radiator cool engine fully cambered front end Dave makes wood molds body brings work vacuum form out B S plastic Thats benefits has working Du- Bro During working hours Dave dreams up new better accessories us modelers things like Ball Links Kwik-Switch Mount Final Filter V-Tail Mixer Prop Drive Unit new 4-Turn Hatch Latch just name few just doesnt seem anything cant Hes accomplished RC pilot builder MODEL CONTEST CATEGORIES AIRCRAFT BOATS CARS ROCKETS designer Hes competent mechanic excellent machinist electrician carpenter Hes also rare types can use both head hands solve problem Theres thing cant very well cant ride airplane see gets air sick Safety Preston continued page 57 automobile recommend carry smallest amount can get tightly sealed can Invert can before put car make sure cap sealed transport within passenger compartment make sure leave windows open dont smoke Dont leave can gas parked car isa gas can market appears offer safety majority have seen think would worth SOUTHW EST modelers check Out goes name Explosafe within can cellular honeycomb-like structure expanded metal mesh known Explofoil claimed cellular structure will suppress explosion can itself very rugged has gasketed screw caps both discharge spout vent Although can manufactured Canada US distributor information can obtained US Marketing Division Explosafe America Inc 2081 Business Center Drive Suite 180 Irvine CA 92715 final word about use gasoline model aircraft should obvious No Smoking pit area around models Perhaps clubs would well advised establish special area pits flying fields would reserved gasoline fueled models 4ddress letters John Preston 7012 Elvira Court Falls Church V4 22042 OVER 100 MANUFACTURERS NEW KITS NEW PRODUCTS COMMERCIAL EXHIBITS LIVE DEMONSTRATIONS FREE FLIGHT U-CONTROL TRAINS Demonstrations SIX SPECIAL AWARDS AMA RAFFLE FREE PUBLIC PARKING PLASTICS Static DISCOUNT TICKETS Model Contest * Public Invited * * * * June 7th & 8th 1980 Womens Building Fair Park Dallas Texas 118 Model Aviation Iv FOR THE HYDRALOCK I. SELF5TICK MOUNTING 3 $2 CLIP AND 3 TWO FLOW U C0N~ dealer order direct Development Inc Box 7399 rk Manufacturers