Radio Control SCALE Bob & Dolly Wischer THE Kitchener-Waterloo All-Scale Rally tendance Flying Dutchmen Club K-W Rally 163 registered airplanes lower previous years model parking space again completely occupied reason 80% models Giant Scale class percentage has increas ing exponential rate Kit manufacturers tell us small Scale models still mainstay business Giant Scale seems dominate rallies suspect small models present K-W kept modelers cars probably because overshadowing effect two classes meet Giant Scalers attracted rallies very few attend contests Only six Giants appeared Lincoln Nats contestquality airplanes compared what seen rally Howard Hughes Spruce Goose flying boat built Steve Gray Frank Evans Tom Dietrich again display past several yearsthis time note map taped its wing telling intention fly 16-ft span 50-lb foam plywood model lake Saturday evening arrived lake located park about five miles distant find ays Bellanca WB2 scaled Smithsonian 3-view drawings Quadra powers 20-lb model finished FabriKote dope Hughes Spruce Goose back ground handiwork Steve partners Evans Dietrich Steve Gray pilots big Hughes H-4 landing water Its eight OS 25s still running 1 6-ft model weighs 50 lbhas balsa fuselage 1/16-veneer-over-foam wings new built-up wing works will reduce weight pair ot ireat Lakes Trainers seen Kitchener-Waterloo Scale Rally identical twins foreground 1/6-scale has 54-in span built Dick Murray An 05 45 powers its finished Super Coverite Hobbypoxy background quarter-scale has Quadra engine built Jack Schroder Its finish polyester material Randolph dope Both scratch-built Peter Westburgs scale drawings Frank Knowles quarter-scale OH Chipmunk all-balsa constructionEvent Manager Willard Dedels host Kitchener-Waterloo Flying aglass-cloth/resinfinish exceptCoveriteon open areas ltweighsDutchmen Club Quadra-powered Stinson SR-6 scaled 191b usesstandard-sizeservosexceptontheflapswhichusearetractWylam plans spansla3 weighs22 lb model iscoveredwith servo long periods flaps-down flightDacron dope final finish acrylic enamel Twono threemasterpieces Great Lakes Trainer L Chester Dubiel uses big 4-cylinder 4-stroke Cirrus engine built Merrit Zimmerman model has spectacular performance part-throttlewith true scale sound Photo right gives better view two Merrits masterpieces Cirrus engine nearestthe camera older 111 cu g6 hp unit larger rearlikethe model is45 cu 325 hp Note difference carburetor locations almost everyone turned Out watch spectacle Two flights made about 20 minutes duration Goose launched tip peninsula shores completely occupied rally fliers spectators cameras eight OS 25 engines fired up after couple false starts due balky engine Steve taxied Goose slightly choppy lake gracefully took air long straight smooth takeoff run As brought close photos noticed engine died no visible effect performance After thoroughly realistic landing during model held off water about 1000 feet reduce speed taxied back beached Dick Speidel used Peter Westburg drawings well-detailed accurately-built Curtiss Hawk P-i B Spanning 84 22lb model Quadra-powered finished Randolph dope over Super Coverite scale 265-in foot between 1/4- 1/5-scale using throttles steering model flown using single transmitter pilot unusual control being throttle servo used wing control four engines advancing throttles wings engines model can turned quite sharply water rudder transmitters two throttle levers tied together manner Continued page 128 Part No 200-235$119 200-23679 200-24479 January 1983 35 200-236 Straight Arm Heavy Duty SERVO ARMS Designed larger quarter scale models molded rugged nylon material 3/32 thick added strength Recommended KPS-20 KPS-20H servos will also fit KPS 1411 KPS-1 511 servos 200- 235 Estra Long Heavy Duty Arm Offset Price 200-2U Extra Long Heavy Duty Arm Straight SH Kraft Systems 450 W California Ave Vista CA 92083e Division Carlisle Corporation BIG BEAUTIFUL AIRPLANES LOADMASTER 0 STINSON~ VOYAGER Qua e Scae 2 ble carrying 10 lbs cargo Wing Span 93-1/4 2 pcs Mammoth Kits designed Quadra other 2 cycle engines Plywood & Softwood construction $9950 BONZO Almost 1/3 Scale Sport Pylon Pattern Flying 60 Quadra Power Wing Span 54 1 Pc Shipping Charges Included US & Canada RC Scale/Wischers Continued page 35 permits moving either both unison second flight eight engines continued running prove boat wasnt under powered eight small engines Steve climbed usual cruising altitude 100 feet about 400 feet time interval less minute considerable spray during takeof landing engines high above water affected worth 1200-mile round trip K-W part enthusiastic crowd saw heard two models innumerable flights Rudi Mayer Flying Dutchmen Club made several flights 4-scale clippedwing Piper Cub floats Powered Webra 91 swinging large prop Rudis Cub out standing STOL performance very short takeoff landing runs contrast Spruce Goose addition flying boat Steve Gray also brought newest creation rally Bellanca WB2 Skyrocket built Smithsonian three-view drawings Steves Bellanca flown throughout two days along Dick Speidels venerable Fairchild FC-2 have seen GIANT-SCALE PLANS Including Assembly Instructions Available J-5 Airplanes Boats $1 795 SET s inmuwmusus P0 Box 82 Belmont Ontario NOL 150 Phone 1 5194440375 K-W Rally number years two planes same era similar size both Quadra powered formation takeoffs well touch-and-go landings com manded attention Everyone saw Merritt Zimmermans fourcylinder four-stroke Cirrus engine Toledo two years ago will interested latest engines similar construction much larger Displacement 45 cu in. 325 hp swings 20-14 prop 6500 rpm Two engines shown K-W large Great Lakes Trainer built Model Builderdrawings Dee Harwell flown Chester Dubiel model will climb quite steeply flying done part throttle exhaust sound four-cylinder engine listening experience particularly matched airplane used Cirrus engine Bob Nelitz returned K-W Rally 3-scale Piper Cub rare combination seen seldom Giant models near-perfect airplane true scale flight Dick Speidels new Curtiss Hawk P1-B another example excellently built flown large Scale model Built Peter Westburgs drawings balsaand-spruce model has fuselage braced foam sheet vibration absorption Ailerons Friese type wings having scale airfoil CUR TISS GOSHA WK Offered Two Sizes Kiorits 60 Plan Drawings 8 Partial Kts Quarter Scale Kioritz type Engine 94 Span Quarter Scale Plan Set $3000 6 Sheets Opposite Wsg View $1200 2 Sheets 2 Scale Plan Set 5th 002 Sheets Opposite Wing View add $775 2 Scale 60 Engines 63 Span 980 Sq Please add $250 Postage & Handling Other designs asailahie too send $1 00 tot Catalog Partiat Kits ot tered lot designs simptity speed poar bailding RICHARD G BARRON Phone 16021 933-6911 11506 Ohio Ave Youngstown Arizona 85343 USA landing gear has working shock struts large spinner cast epoxy lathe-turned produce true smooth exterior Engine cowl formed aluminum sheet enclosing Quadra No spectacular beauty its Randolph dope olive drab yellow close scrutiny discloses wealth idea innovations such dual rigging wires arc equally tensioned running single wire around hidden pulley Kraft KPS-20H aileron servo hidden beneath snapin aluminum cover plate Dick thins prop blades improve performance Hawk built entirely drawings photos no museum examples remaining Other notable models K-W included new -scale deHavilland Chipmunk Frank Knowles Don Paquettes -scale CAP-20L Willard Dedels 03-in-span Stinson SR-6 Wylam plans Cliff Tacies well-known Spezio Tu-Holer has improved perform ance meet Tom Dietrich Frank Evans two partners Spruce Goose otherwise known Tiger Boys invited us ride deHavilland Tiger Moth based Guelph Air Park airport Flying Tiger proved bit difficult anticipated As military trainer wasnt intended easy Spruce Goose kept heated hangar along Moth Auster Thruxton Jackaroo four place Tiger Moth swarm models Some other planes process restoration Cessna Bobcat UC-78 Fairchild Cornell North American BT-9 Tiger Moth Auster have won EAA awards recentlyrestored Jackaroo also has winning potential ships airborne jewelry elite classic antique restorations Tall-draggers Quite often modelers first attempt fly tail-dragger airplane first Scale model Nose wheels common popular today used beginning Wrights Curtiss long period afterward through WW WW II tail-draggers norm Scale modelers feel building easy-handling nose-wheel types places unwanted restriction choice subjects Unfortunately some us find attractive subjects come tail-dragger era modelers experience has limited nose-wheel types makes sense build fly atail-draggertrainer before risking flight Scale model Choosing subject desirable features can have effect time required master handling techniques Wheels too far forward too narrow tread distance between wheels two features likely cause problems because tendency ground loop DI-rLprd I -I I ONE OF ThE QUICKEST BLiILUuez HUCAS OFFERED THE SI-PLANE BUFF 87 Piece Wing Wing FlapsI 1810 Sc Spring Loaded Ldg Gear 35 50CC Engines k Easy Field Assy ROLLED PLANS SET ONLY $3060 Poal paid Precision Semi-Kit Cowl Pants Gear also Avail Alt orders shipped same day COD orders Order direct 10w welcomed I OAR 0 en SOHE lA SR 4141 762 7t55 DRA eMANlrowOc Model Aviation FuTAeA SALE 6FGKIE$19598KEtR 40w/rn 54995 8JN1121 Servos29895K&R 61 tailor5995 7FGK/S26 22398HR 404t95 6FN12616000HR 617495 5LK/S2614985HR 40 60 21/5266700 Muffler925 5 26Servos1996 PICA New Shoofti-Ri553tO6FGK GEMINt Super Chanrp3496 ANDREWS XRay3495 eigH3695 Aerornaster72 95 Traineroraster43 tO Eal NORTHEAST Train Air 404996 11W II SportAir 4054 95 40 size Floats2200 RelAir 406695 GREAT PLANES New Super Sportster 40 $4796 TOP FLITE CARL GOLDBERG MIDEWST ACE LR TAYLOR Power Pacer 96V $4950 $3 Handling Orders under $25 No Charge Over Rank Check ft Money Order Cash COD $2 Extra WAGNERS R/C RD#1 Roe 291 Ford Road Owego NY 13627 160717482903 530 9PM Sat 900 Noon rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360
Edition: Model Aviation - 1983/01
Page Numbers: 34, 35, 128, 129
Radio Control SCALE Bob & Dolly Wischer THE Kitchener-Waterloo All-Scale Rally tendance Flying Dutchmen Club K-W Rally 163 registered airplanes lower previous years model parking space again completely occupied reason 80% models Giant Scale class percentage has increas ing exponential rate Kit manufacturers tell us small Scale models still mainstay business Giant Scale seems dominate rallies suspect small models present K-W kept modelers cars probably because overshadowing effect two classes meet Giant Scalers attracted rallies very few attend contests Only six Giants appeared Lincoln Nats contestquality airplanes compared what seen rally Howard Hughes Spruce Goose flying boat built Steve Gray Frank Evans Tom Dietrich again display past several yearsthis time note map taped its wing telling intention fly 16-ft span 50-lb foam plywood model lake Saturday evening arrived lake located park about five miles distant find ays Bellanca WB2 scaled Smithsonian 3-view drawings Quadra powers 20-lb model finished FabriKote dope Hughes Spruce Goose back ground handiwork Steve partners Evans Dietrich Steve Gray pilots big Hughes H-4 landing water Its eight OS 25s still running 1 6-ft model weighs 50 lbhas balsa fuselage 1/16-veneer-over-foam wings new built-up wing works will reduce weight pair ot ireat Lakes Trainers seen Kitchener-Waterloo Scale Rally identical twins foreground 1/6-scale has 54-in span built Dick Murray An 05 45 powers its finished Super Coverite Hobbypoxy background quarter-scale has Quadra engine built Jack Schroder Its finish polyester material Randolph dope Both scratch-built Peter Westburgs scale drawings Frank Knowles quarter-scale OH Chipmunk all-balsa constructionEvent Manager Willard Dedels host Kitchener-Waterloo Flying aglass-cloth/resinfinish exceptCoveriteon open areas ltweighsDutchmen Club Quadra-powered Stinson SR-6 scaled 191b usesstandard-sizeservosexceptontheflapswhichusearetractWylam plans spansla3 weighs22 lb model iscoveredwith servo long periods flaps-down flightDacron dope final finish acrylic enamel Twono threemasterpieces Great Lakes Trainer L Chester Dubiel uses big 4-cylinder 4-stroke Cirrus engine built Merrit Zimmerman model has spectacular performance part-throttlewith true scale sound Photo right gives better view two Merrits masterpieces Cirrus engine nearestthe camera older 111 cu g6 hp unit larger rearlikethe model is45 cu 325 hp Note difference carburetor locations almost everyone turned Out watch spectacle Two flights made about 20 minutes duration Goose launched tip peninsula shores completely occupied rally fliers spectators cameras eight OS 25 engines fired up after couple false starts due balky engine Steve taxied Goose slightly choppy lake gracefully took air long straight smooth takeoff run As brought close photos noticed engine died no visible effect performance After thoroughly realistic landing during model held off water about 1000 feet reduce speed taxied back beached Dick Speidel used Peter Westburg drawings well-detailed accurately-built Curtiss Hawk P-i B Spanning 84 22lb model Quadra-powered finished Randolph dope over Super Coverite scale 265-in foot between 1/4- 1/5-scale using throttles steering model flown using single transmitter pilot unusual control being throttle servo used wing control four engines advancing throttles wings engines model can turned quite sharply water rudder transmitters two throttle levers tied together manner Continued page 128 Part No 200-235$119 200-23679 200-24479 January 1983 35 200-236 Straight Arm Heavy Duty SERVO ARMS Designed larger quarter scale models molded rugged nylon material 3/32 thick added strength Recommended KPS-20 KPS-20H servos will also fit KPS 1411 KPS-1 511 servos 200- 235 Estra Long Heavy Duty Arm Offset Price 200-2U Extra Long Heavy Duty Arm Straight SH Kraft Systems 450 W California Ave Vista CA 92083e Division Carlisle Corporation BIG BEAUTIFUL AIRPLANES LOADMASTER 0 STINSON~ VOYAGER Qua e Scae 2 ble carrying 10 lbs cargo Wing Span 93-1/4 2 pcs Mammoth Kits designed Quadra other 2 cycle engines Plywood & Softwood construction $9950 BONZO Almost 1/3 Scale Sport Pylon Pattern Flying 60 Quadra Power Wing Span 54 1 Pc Shipping Charges Included US & Canada RC Scale/Wischers Continued page 35 permits moving either both unison second flight eight engines continued running prove boat wasnt under powered eight small engines Steve climbed usual cruising altitude 100 feet about 400 feet time interval less minute considerable spray during takeof landing engines high above water affected worth 1200-mile round trip K-W part enthusiastic crowd saw heard two models innumerable flights Rudi Mayer Flying Dutchmen Club made several flights 4-scale clippedwing Piper Cub floats Powered Webra 91 swinging large prop Rudis Cub out standing STOL performance very short takeoff landing runs contrast Spruce Goose addition flying boat Steve Gray also brought newest creation rally Bellanca WB2 Skyrocket built Smithsonian three-view drawings Steves Bellanca flown throughout two days along Dick Speidels venerable Fairchild FC-2 have seen GIANT-SCALE PLANS Including Assembly Instructions Available J-5 Airplanes Boats $1 795 SET s inmuwmusus P0 Box 82 Belmont Ontario NOL 150 Phone 1 5194440375 K-W Rally number years two planes same era similar size both Quadra powered formation takeoffs well touch-and-go landings com manded attention Everyone saw Merritt Zimmermans fourcylinder four-stroke Cirrus engine Toledo two years ago will interested latest engines similar construction much larger Displacement 45 cu in. 325 hp swings 20-14 prop 6500 rpm Two engines shown K-W large Great Lakes Trainer built Model Builderdrawings Dee Harwell flown Chester Dubiel model will climb quite steeply flying done part throttle exhaust sound four-cylinder engine listening experience particularly matched airplane used Cirrus engine Bob Nelitz returned K-W Rally 3-scale Piper Cub rare combination seen seldom Giant models near-perfect airplane true scale flight Dick Speidels new Curtiss Hawk P1-B another example excellently built flown large Scale model Built Peter Westburgs drawings balsaand-spruce model has fuselage braced foam sheet vibration absorption Ailerons Friese type wings having scale airfoil CUR TISS GOSHA WK Offered Two Sizes Kiorits 60 Plan Drawings 8 Partial Kts Quarter Scale Kioritz type Engine 94 Span Quarter Scale Plan Set $3000 6 Sheets Opposite Wsg View $1200 2 Sheets 2 Scale Plan Set 5th 002 Sheets Opposite Wing View add $775 2 Scale 60 Engines 63 Span 980 Sq Please add $250 Postage & Handling Other designs asailahie too send $1 00 tot Catalog Partiat Kits ot tered lot designs simptity speed poar bailding RICHARD G BARRON Phone 16021 933-6911 11506 Ohio Ave Youngstown Arizona 85343 USA landing gear has working shock struts large spinner cast epoxy lathe-turned produce true smooth exterior Engine cowl formed aluminum sheet enclosing Quadra No spectacular beauty its Randolph dope olive drab yellow close scrutiny discloses wealth idea innovations such dual rigging wires arc equally tensioned running single wire around hidden pulley Kraft KPS-20H aileron servo hidden beneath snapin aluminum cover plate Dick thins prop blades improve performance Hawk built entirely drawings photos no museum examples remaining Other notable models K-W included new -scale deHavilland Chipmunk Frank Knowles Don Paquettes -scale CAP-20L Willard Dedels 03-in-span Stinson SR-6 Wylam plans Cliff Tacies well-known Spezio Tu-Holer has improved perform ance meet Tom Dietrich Frank Evans two partners Spruce Goose otherwise known Tiger Boys invited us ride deHavilland Tiger Moth based Guelph Air Park airport Flying Tiger proved bit difficult anticipated As military trainer wasnt intended easy Spruce Goose kept heated hangar along Moth Auster Thruxton Jackaroo four place Tiger Moth swarm models Some other planes process restoration Cessna Bobcat UC-78 Fairchild Cornell North American BT-9 Tiger Moth Auster have won EAA awards recentlyrestored Jackaroo also has winning potential ships airborne jewelry elite classic antique restorations Tall-draggers Quite often modelers first attempt fly tail-dragger airplane first Scale model Nose wheels common popular today used beginning Wrights Curtiss long period afterward through WW WW II tail-draggers norm Scale modelers feel building easy-handling nose-wheel types places unwanted restriction choice subjects Unfortunately some us find attractive subjects come tail-dragger era modelers experience has limited nose-wheel types makes sense build fly atail-draggertrainer before risking flight Scale model Choosing subject desirable features can have effect time required master handling techniques Wheels too far forward too narrow tread distance between wheels two features likely cause problems because tendency ground loop DI-rLprd I -I I ONE OF ThE QUICKEST BLiILUuez HUCAS OFFERED THE SI-PLANE BUFF 87 Piece Wing Wing FlapsI 1810 Sc Spring Loaded Ldg Gear 35 50CC Engines k Easy Field Assy ROLLED PLANS SET ONLY $3060 Poal paid Precision Semi-Kit Cowl Pants Gear also Avail Alt orders shipped same day COD orders Order direct 10w welcomed I OAR 0 en SOHE lA SR 4141 762 7t55 DRA eMANlrowOc Model Aviation FuTAeA SALE 6FGKIE$19598KEtR 40w/rn 54995 8JN1121 Servos29895K&R 61 tailor5995 7FGK/S26 22398HR 404t95 6FN12616000HR 617495 5LK/S2614985HR 40 60 21/5266700 Muffler925 5 26Servos1996 PICA New Shoofti-Ri553tO6FGK GEMINt Super Chanrp3496 ANDREWS XRay3495 eigH3695 Aerornaster72 95 Traineroraster43 tO Eal NORTHEAST Train Air 404996 11W II SportAir 4054 95 40 size Floats2200 RelAir 406695 GREAT PLANES New Super Sportster 40 $4796 TOP FLITE CARL GOLDBERG MIDEWST ACE LR TAYLOR Power Pacer 96V $4950 $3 Handling Orders under $25 No Charge Over Rank Check ft Money Order Cash COD $2 Extra WAGNERS R/C RD#1 Roe 291 Ford Road Owego NY 13627 160717482903 530 9PM Sat 900 Noon rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360
Edition: Model Aviation - 1983/01
Page Numbers: 34, 35, 128, 129
Radio Control SCALE Bob & Dolly Wischer THE Kitchener-Waterloo All-Scale Rally tendance Flying Dutchmen Club K-W Rally 163 registered airplanes lower previous years model parking space again completely occupied reason 80% models Giant Scale class percentage has increas ing exponential rate Kit manufacturers tell us small Scale models still mainstay business Giant Scale seems dominate rallies suspect small models present K-W kept modelers cars probably because overshadowing effect two classes meet Giant Scalers attracted rallies very few attend contests Only six Giants appeared Lincoln Nats contestquality airplanes compared what seen rally Howard Hughes Spruce Goose flying boat built Steve Gray Frank Evans Tom Dietrich again display past several yearsthis time note map taped its wing telling intention fly 16-ft span 50-lb foam plywood model lake Saturday evening arrived lake located park about five miles distant find ays Bellanca WB2 scaled Smithsonian 3-view drawings Quadra powers 20-lb model finished FabriKote dope Hughes Spruce Goose back ground handiwork Steve partners Evans Dietrich Steve Gray pilots big Hughes H-4 landing water Its eight OS 25s still running 1 6-ft model weighs 50 lbhas balsa fuselage 1/16-veneer-over-foam wings new built-up wing works will reduce weight pair ot ireat Lakes Trainers seen Kitchener-Waterloo Scale Rally identical twins foreground 1/6-scale has 54-in span built Dick Murray An 05 45 powers its finished Super Coverite Hobbypoxy background quarter-scale has Quadra engine built Jack Schroder Its finish polyester material Randolph dope Both scratch-built Peter Westburgs scale drawings Frank Knowles quarter-scale OH Chipmunk all-balsa constructionEvent Manager Willard Dedels host Kitchener-Waterloo Flying aglass-cloth/resinfinish exceptCoveriteon open areas ltweighsDutchmen Club Quadra-powered Stinson SR-6 scaled 191b usesstandard-sizeservosexceptontheflapswhichusearetractWylam plans spansla3 weighs22 lb model iscoveredwith servo long periods flaps-down flightDacron dope final finish acrylic enamel Twono threemasterpieces Great Lakes Trainer L Chester Dubiel uses big 4-cylinder 4-stroke Cirrus engine built Merrit Zimmerman model has spectacular performance part-throttlewith true scale sound Photo right gives better view two Merrits masterpieces Cirrus engine nearestthe camera older 111 cu g6 hp unit larger rearlikethe model is45 cu 325 hp Note difference carburetor locations almost everyone turned Out watch spectacle Two flights made about 20 minutes duration Goose launched tip peninsula shores completely occupied rally fliers spectators cameras eight OS 25 engines fired up after couple false starts due balky engine Steve taxied Goose slightly choppy lake gracefully took air long straight smooth takeoff run As brought close photos noticed engine died no visible effect performance After thoroughly realistic landing during model held off water about 1000 feet reduce speed taxied back beached Dick Speidel used Peter Westburg drawings well-detailed accurately-built Curtiss Hawk P-i B Spanning 84 22lb model Quadra-powered finished Randolph dope over Super Coverite scale 265-in foot between 1/4- 1/5-scale using throttles steering model flown using single transmitter pilot unusual control being throttle servo used wing control four engines advancing throttles wings engines model can turned quite sharply water rudder transmitters two throttle levers tied together manner Continued page 128 Part No 200-235$119 200-23679 200-24479 January 1983 35 200-236 Straight Arm Heavy Duty SERVO ARMS Designed larger quarter scale models molded rugged nylon material 3/32 thick added strength Recommended KPS-20 KPS-20H servos will also fit KPS 1411 KPS-1 511 servos 200- 235 Estra Long Heavy Duty Arm Offset Price 200-2U Extra Long Heavy Duty Arm Straight SH Kraft Systems 450 W California Ave Vista CA 92083e Division Carlisle Corporation BIG BEAUTIFUL AIRPLANES LOADMASTER 0 STINSON~ VOYAGER Qua e Scae 2 ble carrying 10 lbs cargo Wing Span 93-1/4 2 pcs Mammoth Kits designed Quadra other 2 cycle engines Plywood & Softwood construction $9950 BONZO Almost 1/3 Scale Sport Pylon Pattern Flying 60 Quadra Power Wing Span 54 1 Pc Shipping Charges Included US & Canada RC Scale/Wischers Continued page 35 permits moving either both unison second flight eight engines continued running prove boat wasnt under powered eight small engines Steve climbed usual cruising altitude 100 feet about 400 feet time interval less minute considerable spray during takeof landing engines high above water affected worth 1200-mile round trip K-W part enthusiastic crowd saw heard two models innumerable flights Rudi Mayer Flying Dutchmen Club made several flights 4-scale clippedwing Piper Cub floats Powered Webra 91 swinging large prop Rudis Cub out standing STOL performance very short takeoff landing runs contrast Spruce Goose addition flying boat Steve Gray also brought newest creation rally Bellanca WB2 Skyrocket built Smithsonian three-view drawings Steves Bellanca flown throughout two days along Dick Speidels venerable Fairchild FC-2 have seen GIANT-SCALE PLANS Including Assembly Instructions Available J-5 Airplanes Boats $1 795 SET s inmuwmusus P0 Box 82 Belmont Ontario NOL 150 Phone 1 5194440375 K-W Rally number years two planes same era similar size both Quadra powered formation takeoffs well touch-and-go landings com manded attention Everyone saw Merritt Zimmermans fourcylinder four-stroke Cirrus engine Toledo two years ago will interested latest engines similar construction much larger Displacement 45 cu in. 325 hp swings 20-14 prop 6500 rpm Two engines shown K-W large Great Lakes Trainer built Model Builderdrawings Dee Harwell flown Chester Dubiel model will climb quite steeply flying done part throttle exhaust sound four-cylinder engine listening experience particularly matched airplane used Cirrus engine Bob Nelitz returned K-W Rally 3-scale Piper Cub rare combination seen seldom Giant models near-perfect airplane true scale flight Dick Speidels new Curtiss Hawk P1-B another example excellently built flown large Scale model Built Peter Westburgs drawings balsaand-spruce model has fuselage braced foam sheet vibration absorption Ailerons Friese type wings having scale airfoil CUR TISS GOSHA WK Offered Two Sizes Kiorits 60 Plan Drawings 8 Partial Kts Quarter Scale Kioritz type Engine 94 Span Quarter Scale Plan Set $3000 6 Sheets Opposite Wsg View $1200 2 Sheets 2 Scale Plan Set 5th 002 Sheets Opposite Wing View add $775 2 Scale 60 Engines 63 Span 980 Sq Please add $250 Postage & Handling Other designs asailahie too send $1 00 tot Catalog Partiat Kits ot tered lot designs simptity speed poar bailding RICHARD G BARRON Phone 16021 933-6911 11506 Ohio Ave Youngstown Arizona 85343 USA landing gear has working shock struts large spinner cast epoxy lathe-turned produce true smooth exterior Engine cowl formed aluminum sheet enclosing Quadra No spectacular beauty its Randolph dope olive drab yellow close scrutiny discloses wealth idea innovations such dual rigging wires arc equally tensioned running single wire around hidden pulley Kraft KPS-20H aileron servo hidden beneath snapin aluminum cover plate Dick thins prop blades improve performance Hawk built entirely drawings photos no museum examples remaining Other notable models K-W included new -scale deHavilland Chipmunk Frank Knowles Don Paquettes -scale CAP-20L Willard Dedels 03-in-span Stinson SR-6 Wylam plans Cliff Tacies well-known Spezio Tu-Holer has improved perform ance meet Tom Dietrich Frank Evans two partners Spruce Goose otherwise known Tiger Boys invited us ride deHavilland Tiger Moth based Guelph Air Park airport Flying Tiger proved bit difficult anticipated As military trainer wasnt intended easy Spruce Goose kept heated hangar along Moth Auster Thruxton Jackaroo four place Tiger Moth swarm models Some other planes process restoration Cessna Bobcat UC-78 Fairchild Cornell North American BT-9 Tiger Moth Auster have won EAA awards recentlyrestored Jackaroo also has winning potential ships airborne jewelry elite classic antique restorations Tall-draggers Quite often modelers first attempt fly tail-dragger airplane first Scale model Nose wheels common popular today used beginning Wrights Curtiss long period afterward through WW WW II tail-draggers norm Scale modelers feel building easy-handling nose-wheel types places unwanted restriction choice subjects Unfortunately some us find attractive subjects come tail-dragger era modelers experience has limited nose-wheel types makes sense build fly atail-draggertrainer before risking flight Scale model Choosing subject desirable features can have effect time required master handling techniques Wheels too far forward too narrow tread distance between wheels two features likely cause problems because tendency ground loop DI-rLprd I -I I ONE OF ThE QUICKEST BLiILUuez HUCAS OFFERED THE SI-PLANE BUFF 87 Piece Wing Wing FlapsI 1810 Sc Spring Loaded Ldg Gear 35 50CC Engines k Easy Field Assy ROLLED PLANS SET ONLY $3060 Poal paid Precision Semi-Kit Cowl Pants Gear also Avail Alt orders shipped same day COD orders Order direct 10w welcomed I OAR 0 en SOHE lA SR 4141 762 7t55 DRA eMANlrowOc Model Aviation FuTAeA SALE 6FGKIE$19598KEtR 40w/rn 54995 8JN1121 Servos29895K&R 61 tailor5995 7FGK/S26 22398HR 404t95 6FN12616000HR 617495 5LK/S2614985HR 40 60 21/5266700 Muffler925 5 26Servos1996 PICA New Shoofti-Ri553tO6FGK GEMINt Super Chanrp3496 ANDREWS XRay3495 eigH3695 Aerornaster72 95 Traineroraster43 tO Eal NORTHEAST Train Air 404996 11W II SportAir 4054 95 40 size Floats2200 RelAir 406695 GREAT PLANES New Super Sportster 40 $4796 TOP FLITE CARL GOLDBERG MIDEWST ACE LR TAYLOR Power Pacer 96V $4950 $3 Handling Orders under $25 No Charge Over Rank Check ft Money Order Cash COD $2 Extra WAGNERS R/C RD#1 Roe 291 Ford Road Owego NY 13627 160717482903 530 9PM Sat 900 Noon rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360
Edition: Model Aviation - 1983/01
Page Numbers: 34, 35, 128, 129
Radio Control SCALE Bob & Dolly Wischer THE Kitchener-Waterloo All-Scale Rally tendance Flying Dutchmen Club K-W Rally 163 registered airplanes lower previous years model parking space again completely occupied reason 80% models Giant Scale class percentage has increas ing exponential rate Kit manufacturers tell us small Scale models still mainstay business Giant Scale seems dominate rallies suspect small models present K-W kept modelers cars probably because overshadowing effect two classes meet Giant Scalers attracted rallies very few attend contests Only six Giants appeared Lincoln Nats contestquality airplanes compared what seen rally Howard Hughes Spruce Goose flying boat built Steve Gray Frank Evans Tom Dietrich again display past several yearsthis time note map taped its wing telling intention fly 16-ft span 50-lb foam plywood model lake Saturday evening arrived lake located park about five miles distant find ays Bellanca WB2 scaled Smithsonian 3-view drawings Quadra powers 20-lb model finished FabriKote dope Hughes Spruce Goose back ground handiwork Steve partners Evans Dietrich Steve Gray pilots big Hughes H-4 landing water Its eight OS 25s still running 1 6-ft model weighs 50 lbhas balsa fuselage 1/16-veneer-over-foam wings new built-up wing works will reduce weight pair ot ireat Lakes Trainers seen Kitchener-Waterloo Scale Rally identical twins foreground 1/6-scale has 54-in span built Dick Murray An 05 45 powers its finished Super Coverite Hobbypoxy background quarter-scale has Quadra engine built Jack Schroder Its finish polyester material Randolph dope Both scratch-built Peter Westburgs scale drawings Frank Knowles quarter-scale OH Chipmunk all-balsa constructionEvent Manager Willard Dedels host Kitchener-Waterloo Flying aglass-cloth/resinfinish exceptCoveriteon open areas ltweighsDutchmen Club Quadra-powered Stinson SR-6 scaled 191b usesstandard-sizeservosexceptontheflapswhichusearetractWylam plans spansla3 weighs22 lb model iscoveredwith servo long periods flaps-down flightDacron dope final finish acrylic enamel Twono threemasterpieces Great Lakes Trainer L Chester Dubiel uses big 4-cylinder 4-stroke Cirrus engine built Merrit Zimmerman model has spectacular performance part-throttlewith true scale sound Photo right gives better view two Merrits masterpieces Cirrus engine nearestthe camera older 111 cu g6 hp unit larger rearlikethe model is45 cu 325 hp Note difference carburetor locations almost everyone turned Out watch spectacle Two flights made about 20 minutes duration Goose launched tip peninsula shores completely occupied rally fliers spectators cameras eight OS 25 engines fired up after couple false starts due balky engine Steve taxied Goose slightly choppy lake gracefully took air long straight smooth takeoff run As brought close photos noticed engine died no visible effect performance After thoroughly realistic landing during model held off water about 1000 feet reduce speed taxied back beached Dick Speidel used Peter Westburg drawings well-detailed accurately-built Curtiss Hawk P-i B Spanning 84 22lb model Quadra-powered finished Randolph dope over Super Coverite scale 265-in foot between 1/4- 1/5-scale using throttles steering model flown using single transmitter pilot unusual control being throttle servo used wing control four engines advancing throttles wings engines model can turned quite sharply water rudder transmitters two throttle levers tied together manner Continued page 128 Part No 200-235$119 200-23679 200-24479 January 1983 35 200-236 Straight Arm Heavy Duty SERVO ARMS Designed larger quarter scale models molded rugged nylon material 3/32 thick added strength Recommended KPS-20 KPS-20H servos will also fit KPS 1411 KPS-1 511 servos 200- 235 Estra Long Heavy Duty Arm Offset Price 200-2U Extra Long Heavy Duty Arm Straight SH Kraft Systems 450 W California Ave Vista CA 92083e Division Carlisle Corporation BIG BEAUTIFUL AIRPLANES LOADMASTER 0 STINSON~ VOYAGER Qua e Scae 2 ble carrying 10 lbs cargo Wing Span 93-1/4 2 pcs Mammoth Kits designed Quadra other 2 cycle engines Plywood & Softwood construction $9950 BONZO Almost 1/3 Scale Sport Pylon Pattern Flying 60 Quadra Power Wing Span 54 1 Pc Shipping Charges Included US & Canada RC Scale/Wischers Continued page 35 permits moving either both unison second flight eight engines continued running prove boat wasnt under powered eight small engines Steve climbed usual cruising altitude 100 feet about 400 feet time interval less minute considerable spray during takeof landing engines high above water affected worth 1200-mile round trip K-W part enthusiastic crowd saw heard two models innumerable flights Rudi Mayer Flying Dutchmen Club made several flights 4-scale clippedwing Piper Cub floats Powered Webra 91 swinging large prop Rudis Cub out standing STOL performance very short takeoff landing runs contrast Spruce Goose addition flying boat Steve Gray also brought newest creation rally Bellanca WB2 Skyrocket built Smithsonian three-view drawings Steves Bellanca flown throughout two days along Dick Speidels venerable Fairchild FC-2 have seen GIANT-SCALE PLANS Including Assembly Instructions Available J-5 Airplanes Boats $1 795 SET s inmuwmusus P0 Box 82 Belmont Ontario NOL 150 Phone 1 5194440375 K-W Rally number years two planes same era similar size both Quadra powered formation takeoffs well touch-and-go landings com manded attention Everyone saw Merritt Zimmermans fourcylinder four-stroke Cirrus engine Toledo two years ago will interested latest engines similar construction much larger Displacement 45 cu in. 325 hp swings 20-14 prop 6500 rpm Two engines shown K-W large Great Lakes Trainer built Model Builderdrawings Dee Harwell flown Chester Dubiel model will climb quite steeply flying done part throttle exhaust sound four-cylinder engine listening experience particularly matched airplane used Cirrus engine Bob Nelitz returned K-W Rally 3-scale Piper Cub rare combination seen seldom Giant models near-perfect airplane true scale flight Dick Speidels new Curtiss Hawk P1-B another example excellently built flown large Scale model Built Peter Westburgs drawings balsaand-spruce model has fuselage braced foam sheet vibration absorption Ailerons Friese type wings having scale airfoil CUR TISS GOSHA WK Offered Two Sizes Kiorits 60 Plan Drawings 8 Partial Kts Quarter Scale Kioritz type Engine 94 Span Quarter Scale Plan Set $3000 6 Sheets Opposite Wsg View $1200 2 Sheets 2 Scale Plan Set 5th 002 Sheets Opposite Wing View add $775 2 Scale 60 Engines 63 Span 980 Sq Please add $250 Postage & Handling Other designs asailahie too send $1 00 tot Catalog Partiat Kits ot tered lot designs simptity speed poar bailding RICHARD G BARRON Phone 16021 933-6911 11506 Ohio Ave Youngstown Arizona 85343 USA landing gear has working shock struts large spinner cast epoxy lathe-turned produce true smooth exterior Engine cowl formed aluminum sheet enclosing Quadra No spectacular beauty its Randolph dope olive drab yellow close scrutiny discloses wealth idea innovations such dual rigging wires arc equally tensioned running single wire around hidden pulley Kraft KPS-20H aileron servo hidden beneath snapin aluminum cover plate Dick thins prop blades improve performance Hawk built entirely drawings photos no museum examples remaining Other notable models K-W included new -scale deHavilland Chipmunk Frank Knowles Don Paquettes -scale CAP-20L Willard Dedels 03-in-span Stinson SR-6 Wylam plans Cliff Tacies well-known Spezio Tu-Holer has improved perform ance meet Tom Dietrich Frank Evans two partners Spruce Goose otherwise known Tiger Boys invited us ride deHavilland Tiger Moth based Guelph Air Park airport Flying Tiger proved bit difficult anticipated As military trainer wasnt intended easy Spruce Goose kept heated hangar along Moth Auster Thruxton Jackaroo four place Tiger Moth swarm models Some other planes process restoration Cessna Bobcat UC-78 Fairchild Cornell North American BT-9 Tiger Moth Auster have won EAA awards recentlyrestored Jackaroo also has winning potential ships airborne jewelry elite classic antique restorations Tall-draggers Quite often modelers first attempt fly tail-dragger airplane first Scale model Nose wheels common popular today used beginning Wrights Curtiss long period afterward through WW WW II tail-draggers norm Scale modelers feel building easy-handling nose-wheel types places unwanted restriction choice subjects Unfortunately some us find attractive subjects come tail-dragger era modelers experience has limited nose-wheel types makes sense build fly atail-draggertrainer before risking flight Scale model Choosing subject desirable features can have effect time required master handling techniques Wheels too far forward too narrow tread distance between wheels two features likely cause problems because tendency ground loop DI-rLprd I -I I ONE OF ThE QUICKEST BLiILUuez HUCAS OFFERED THE SI-PLANE BUFF 87 Piece Wing Wing FlapsI 1810 Sc Spring Loaded Ldg Gear 35 50CC Engines k Easy Field Assy ROLLED PLANS SET ONLY $3060 Poal paid Precision Semi-Kit Cowl Pants Gear also Avail Alt orders shipped same day COD orders Order direct 10w welcomed I OAR 0 en SOHE lA SR 4141 762 7t55 DRA eMANlrowOc Model Aviation FuTAeA SALE 6FGKIE$19598KEtR 40w/rn 54995 8JN1121 Servos29895K&R 61 tailor5995 7FGK/S26 22398HR 404t95 6FN12616000HR 617495 5LK/S2614985HR 40 60 21/5266700 Muffler925 5 26Servos1996 PICA New Shoofti-Ri553tO6FGK GEMINt Super Chanrp3496 ANDREWS XRay3495 eigH3695 Aerornaster72 95 Traineroraster43 tO Eal NORTHEAST Train Air 404996 11W II SportAir 4054 95 40 size Floats2200 RelAir 406695 GREAT PLANES New Super Sportster 40 $4796 TOP FLITE CARL GOLDBERG MIDEWST ACE LR TAYLOR Power Pacer 96V $4950 $3 Handling Orders under $25 No Charge Over Rank Check ft Money Order Cash COD $2 Extra WAGNERS R/C RD#1 Roe 291 Ford Road Owego NY 13627 160717482903 530 9PM Sat 900 Noon rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360