Radio Control: Scale

RENO NATS High altitude hot weather August will have influence flights Reno Stead Field site Nats outdoor activity altitude about mile above sea level height combined expected temperatures 800 will place density altitude range between 8000 9000 feet Com bined high temperature altitude will af fect models though field height over 1 /2 miles Modelers regularly fly Reno well Colorado New Mexico tell us altitude has little effect Having witnessed few prob lems Reno Scale World Cham pionships 1982 aware effect Modelers accustomed conditions make compensation lack air density longer takeoff runs faster landings regular basis having make mental adjustments Higher nitro content fuel can replace some energy lost engines due lack oxygen Anyone experience full-size planes has flown high-altitude fields knows airspeed indicator reads same touchdown regardless altitude real difference manifested tire-squeal wheels meet runway unaccustomed higher velocity other words airspeed indicators sensing head needs moving greater speed less dense air give same reading lower altitude means stall speeds airspeed indicator therefore same altitudes temperatures Only ground speed varies Propellers wings need moving faster get same bite air less dense Delafield WI altitude 600 feet above sea level experience density phenomena seen perfor manc variations occur temperature fluctuations 400-foot-long club field barely long enough tall corn stalks critical end weather hot humid normal conditions through summer First flights during chill autumn always revelation short takeoff runs steeper climbs possible constitutes change about 8% air weight heavy Scale model marginal per formance low altitude can become un manageable flown surface 1 /2 miles high after successful takeoff first time wing loaded high-G maneuver will refuse carry model weight Modelers live high altitudes have learned importance building light using sufficient power Most modelers 48 Model Aviation Astronautmodeler Robert Hoot Gibson piloted last flight Space Shuttle February 1984and made first-ever Shuttle landing Florida photo shows him 1982 Seguin TX Nats scratch-built ducted-fan F-16 Dale Arvin used Robart Universal Scale wheels Top Fiite Vought F4U-1 D model Note weathered finish craft features operating flaps fabric-covered wings prototype functional exhaust stacks sliding canopy flaps 900 retractable gear although men tioned well bet tall wheel retracts too Lars Heimbro rest Swedish Scale team showed everyone well-prepared RC Scale model could fly well high densIty-altitude Reno NVsite 1982 RC Scale World Championships Lars Mitsubishi Zero shown taxiing off runway after official flight performed well Reno due large part its being lIghtweightonly 8 lb Swedish teams models lightweight Note vast area backgroundperfect flying territory own 1984 AMA National Contest coming August over-power planes get climb angle typically about 10 times abrupt possible full-size prototype hot afternoon Reno models wing has 25% 30% fewer air molecules work plane will need ground speed proportionately greater Engine fuel prop combinations become critical us could mean added nitro about 15% slightly higher prop pitch high nitro engine may seem run same rpm lower altitude because less drag blades low-density air increase efficiency use higher-pitch larger-diameter prop Swedes 7- 85-lb airplanes proved Reno suitable flying site Greater takeoff speeds can lead strange behavior quirks Hot runways can soften tires expand diameter due centrifugal force spun abnormally higher speed fast takeoff expand ing tire rubs strut interior wheel pants slow model preventing lift-off causing high-speed nose-over lost few props learning lesson Reno 82 model faults exaggerated flown under adverse conditions com bined high altitude high temperature Marginal tail-heaviness converts normally docile airplane uncontrollable beast always verge disaster Overweight underpowered models will Continued page 154 THE OLYIMLPJCV Ace R/C now offers American made alternative plastic imports Olympic V Time proven quality dependability sensible solid package tradition Silver Seven results unit perfect first time R/Cer sport flier So modeler can choose size type price range servo requires Olympic V furnished less servos Any modern positive pulse servos Ace other brand will work system connectors furnished So now alternative Ace Silver Seven performance import price Available approved 50 53 72 mHz channels RECEIVERTRANSMITTER Proven Silver Seven DesignFour channels standard fifth Wired five channels channel optional Gold plated Deans connectorsProven Silver Seven hi output 3/4 x 1-11/32 x 2-1/4 14 oz RF deck 500 ma Rechargeable NicdsOpen Gimbal Sticks Dual Charger furnishedRugged vinyl clad aluminum Servo connectors furnished case Expanded scale voltmeter monitor battery 20G500Olympic V SystemRechargeable Ni-cd equipped 96V @ 500 ma Assembled $14995Offset antenna maximum radiation Send $200 complete catalog Ace items available dealer order direct add $100 handling fee [AU I/C Em PO Box 511E Higginsville Mo 64037 816 584-7121 June 1984 49 George Roses P6E Hawk ready land Reno-Stead Airportsite 1984 AMA Nats 22-lb weight Lee Richters G-175 Beechcraft Staggerwing supported Du-Bro 4-in-diemeter wheels custom-built landing gear retracts air system Model spans 80 CONDOR IGNITION TACHOMETER lightweight compact instrument can hand-held mounted permanently aircraft boat provides digital readout RPM soon engine starts Ignition Tach has no switches engine stops running automatically switches Hobbs Meter-Type Mode providing readout time hours minutes DET 301 Retail $6995/Condor $4995 - TELE-TACHOMETER NEW Digicon TT-01 Tele-Tachometer first time can read engine RPM and/or airspeed actually flight No guessing Now youll know what engine prop plug fuel giving CdS sensors coupled sub miniature airborne TX send data hand-held unit Accurate RPM 30k airspeed 300 Km/h Audible stall warning RDF traces lost aircraft Retail $18495/Condor $14995 RC Soaring/Pruss Continued page 151 Quabecks Dohie design has four servos buried wing flap aileron section Synergy has no wingmounted servos drive flaps servo operates cranklike linkages extend fuselage flap roots Another single servo drives both ailerons through torque drives clever arrange ment can detach ailerons Yet another servo repositions both aileron flap servos affect camber changes ailerons taper proportionately wing flaps Flaps ailerons 22% wing chord Airfoil Quabeck 10/25/9 means 10% thick root thinning 9% tip camber 25% wing stabs foam covered fiberglass using vacuum-bag principal finish has mold-like quality Wingspan 120 11-in chord root eight-inch tip chord stab 10% wing area tail volume 36 Overall length 57 Empty bird flies 14-oz wing loading 112 oz Two pounds No 9 BB shot can carried ballast boosts wing loading 181/2 oz per sq ft So far bird has flown empty gratifying results also won South Bay Soaring Societys F3B design contest Good News/Bad News First bad news wonderful Midwest Sailplane events annual Great Race cross-country Sailplane race has cancelled year Blame cancellation has laid flying site problems Now good news Eastern Iowa Soaring Associaton sponsoring Cross Country Soaring meet held North Liberty IA Memodal Day weekend May 26-27 1984 will run according new 198485 AMA rules Provisional event have received new rule book time read can look up summary rules December 1982 issue Model viation page 109 appears Rules Proposal RC-84-27 Rules much like Great Race rules further information check witl Contest Director Terry Edmonds 1 Lakeview Dr Iowa City IA 52240 telephone numbers 319 353 5665 office 319 351-1517 home Just save trip dictionary synergy effort total greater combined efforts individuals Sounds like SBSS boys have come up just right name Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Scale/Wiscers Continued oaoe 49 fly relatively normal manner until unusual load appliedand can result steep turn bit too much up-elevator applied Gusty winds magnify faults model flies through wind shear conditions suddenly loses precious airspeed needle valve buried engine compartment beyond convenient adjust ment can lead loss critically necessary power important thing remem ber permit doomsday talk stop attendance Reno Nats Its great place fly well-prepared RC Scale models Battery wiring Extension cords make pos sible multitude servo battery ar rangements Scale models likely model types need longer-then-normal wire leads Most us use extensions have assumed wires suitable size carry current purposesand cases true However place batteries remote nose compartment switch located some distance further back receiver yet another location accumulated length wire may become equivalent stretched resistor particularly true large multi-function air planes servos power HOT STUFFTMVIDEO-TIPS VHS CASSETTES #S 2 CLIP THIS COUPON SEND $5500 check MO GET BOTH VHS TAPES PLUS 1 EA 2 oz HOT STUFF 2 oz SUPER T 3 oz HOT SHOT %7 FREE OFFEP GOOD IN U S ONLY THRU JUNE 84 PO BOX 836 SIMI CA 93062 805 522-0062 17971 Skypark Circle Suite 0 Irvine CA 92714 714 250-1425 Handling Charges COD -$475 Credit Card $475 • — Prepaid Order -$250 154 Model Aviation demand batteries high Conductors used model systems usually No 26 gauge wire made 19 strands 004-in-diameter wire reason fineness individual strands help prevent breakage occurs frequent bending avoid fracture due engine vibration points flexible lengths meet solid terminals such plugs sockets appli cation wire used models ideal type Problems arise try use No 26 wire long extension remote battery pack switch carries current servos receiver Glitches begin appear several servos driving simultaneously because voltage drop extension cord may occur freshly-charged batteries possibility exists Current-carrying capacity conductors measured cross section area combined strands specified circular mils No 26 area 0002 No 22 0005 No 20 0008 area dimensions can seen current-carrying capacity approxi mately doubles step 26 22 20 dimensions derived calcu lating area single strand rr R2 multiplied number strands wire other No 26 supplied model purposes will necessary make up switch harness Deans plugs sockets Ace RC Inc equivalent rewire battery pack heavier wire Standard model-type blocks con nectors No 26 wires attached adequate currently-available switches Noble DPDT Ace reliable As mentioned earlier greater numbers strands fine wire desirable No 20 wire sufficiently heavy longest battery connections wire has 10 strands common amount becomes quite stiff considerable risk vibration-fatigue adjacent solder joints Tape wire battery pack also switch body prevent motion near solder joint tape will distribute bending loads An alternate method increasing wire capacity use two No 26 wires parallel conductor Precautions against wire fracture should also observed method Erratum In ClAM Paris report page 117 March 1984 MA defi nition models flown Big Scale Models event conjunction Scale World Championships LeBourget July definition stated three engines maximum should jave three horsepower maximum Horsepower de termined manufacturers specifica tions Wheels Scale Wheel selection Scale models has always minor headaches Except planes can use Williams Brothers products wheels have correct appearance arent al ways easy find Scale projects have abandoned because no suitable wheels could found met critical standards know modelers have made own wheels tires obtain true Scale appear ance second problem wheels inability support weight heavier-than-average models Flat spots re sult prolonged parking spot especially hot pavement contests New wheels Carl Goldberg Models Inc have rubber compound sufficiently stiff resist deformation tires have ribbed tread out-of-scale lettering sidewalls can scraped sanded off Hubs standard six-spoke model-type can modified better Scale impression sizes 11/4 3/2 inches larger sizes 4 6 inches Giants Du-Bro Big Wheels have smooth tread inflatable pressure can increased support heavier model Du-Bros new Cub-type wheels 4-inch di ameter quarter-scale planes have ribbed tread although Cubs used come factory smooth treads Robarts Universal Scale wheels seen Scale models have tires low rebound thermoplastic rubber rea sonably authentic lettering sides glossy finish tires can readily re moved gentle rubbing cloth moist ened dope thinner Robart tires inflatable following manufacturers instructions prefer stuffing casings another tire smaller diameter stif fen sidewalls prevention flat spots parking Robart wheels supplied hub discs well suited modi fication enhance authenticity drilling filing shape Plywood styrene discs can epoxied hubs provide appearance depth Lightest-weight wheels have found Aeroscale Sig range size 2 5 inches have reasonable load-carrying capacity problem flat spots lightly-raised tread ribs can removed sharp razor blade smoother surface needed Astronaut modelers Robert Hoot Gib son NASA Astronaut pilot Feb ruary Space Shuttle flight Scale modeler placed third Sport Scale 1982 Seguin TX Nats model Hoot flew scratch-built General Dynamics F- 16 fighter Scozzi ducted fan unit K&B 75 engine Now 37 years old Hoot has flying full-size planes since age 10 received private pilots license 17 Both parents pilots An aeronautical engineer earned de gree California Polytechnical State Uni versity 1969 entered Navy flight training After 56 combat missions over Vietnam now has total 3000 flying hours 35 aircraft types recent Chal lenger flight added another 190 hours Mod eling full-scale seem have run parallel courses successful aviation career Dealers ributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Bos 2136 Fairfas Vrgino 22031 u 5 June 1984 155 MODEL MAGIC FILLER Balsa Foam Fiberglass Quick setting Sands like balsa Non toxic Easy use Light weight Non shrinking SuperiorStrength Adhesion & Flexibility Compatable finishes & coverings Model Magic TIP Month Tint MMF drop ot water color latex pigment 58 08 Retail R fi o 0 nd Model Magic Products PO Box 7784St Paul Mino 55119 715 425-1397 Fillets Gap tilling Ding repair See dealer first write call As Seen Toledo New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used Light weight Sandable Carveable Excellent Gap Fllinq Non Sagging Superior Strength 6 fI oz $895 lOfIoz $1195 Classic RIC Scale TI4 sGRAT LAK 40 Wing 15 25 Engines NEW FOURMOST PRODUCTS! FOURMOST RECOIL TUBING four foot length super-tough fuel-proof urethanetubing pre-formed intoa FOUR-INCH COIL allows placement yourfield box can convenient distance aircraft boat After use tubing will retract its earlier space-saving form Price$395 Lr / WE HAVE THE FITTING SOLUTION ORsmallSize 1/16 IDPrice $150 1 Tee 2 Elbows Pen Bladder Tee IO1 CTs 4040 24th Ave. Forest Grove OR 97116 PROD U F URM Telephone 503 357-2732 Other astronauts began careers modeling Neil Armstrong Frank Borman Neil member Purdue Aeromodelers club flew model air craft competitions years 1946 through 1950 member US Navy team 1949 Nats says model building flying activities signif icantly contributed interest aero nautics primary force directing education toward aeronautical engineer ing Frank Borman Chairman President Chief Executive Officer Eastern Airlines former astronaut agrees model aviation instills patience skill creativity importantly satisfaction job well done thrill witnessing takeoff flight successful return personallyconstructed model second ac tual experience flying says no wonder therefore almost aviators actually begin careers interest sparked hobby model aviation Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Pylon Racing/Hager Continued Daae 50 raceand win Thats what call positive thinking waitwhat about Wouldnt like go World Championship races representing USA Well lets get have lot lost time make up lot work think years Nats FAI Pylon event going perfect warm-up race will less just serve let us know much work will needed get ready World Championship race sky limit Its up now Just will go about selecting team has decided yet said will team report sent Zdenek Ma lina covering Czechoslovak FAI class F3D Championships 83 last F3D race flown Melnik air field towards end 1983 concluded Czechoslovak Pylon Racing season Malina brothers Milos Zdenek became overall victors third time row must said time victory close achieved best time far clocked Czechoslovakia82 sec onds second team Messrs Kunes Nadrchal second slower third team Novak Buber clocked still remarkable 88 seconds final 1983 race considered have rather high stan dard indeedof first 10 teams clocked times under 100 seconds Among remarkable perfor mances races flown 18-year-old Tiri Klein proved himself very good pilot having ably supported father/mechanic majority contestants flew Mus tangs Sharks Little Tony racers teams used new Czechoslovak MVVS 40 65cc glow engine continues prove its world-class reputation Among its virtues high reliability high power-output Everybody looks forward coming 1984 season hope host teams UK USA expected appearance British US contestants Europe reason behind agreement Italian Aeroclub dates schedule both FAI International contests arranged make both accessible modelers cradle Pylon Racingthe USAand UK Trofeo OPS will held Italy June 9 10 1984 Modela GP will flown week later June 16 17 1984 Czech oslovakia races being held close enough together enable attend both events one-week period Detailed information available following address Zdenek Malina Vlasim ska 210100 Praha 10 Czechoslovakia Top Ten Finishers Czechoslovak F3D Championships M Zd Malina846 sec 2 1 Kunes/Zd Nadrchal87 1 sec 3 M NovaklM Bub er880 sec 41 Padela/K Katzer900 sec 5 J Bily/J Husak90 sec 6 Zd Teply/Zd Teply908 sec 71 Vosmik D Vosmik932 sec 8 F l-lovorka/V Kucera963 sec 9 K Hacker/M Fia la990 sec 10 J Prachr/J Chalopuka998 sec think its time get FAI off back burner will keep posted still receive two three letters month asking join NMPRA Yearly dues non-fliers $13 flying members $18 Send Bev Wisniewski 9222 Cedar St No 2 Bellfiower CA 90706 See next month Bill Hager 706 Glen Haven Dr Conroe IX 77302 RC Helicopters/Jolly Continued page 51 came aerobatic maneuvers found extreme throws necessary perform loops rolls Consecutive maneuvers out question called Walt Schoonard importer Superior told him enigma told Schluter designed Superior FAI work machine must show extreme stability hovering maneuvers meant necessary tone down response rotor headwhich course hurt loops rolls After discussion Walt realized what meant Superior acro batic Helicopter market today will aerobatic maneuvers just takes room time complete maneuver General impression test model powered 05 61 FSR-H Helicopter engine controlled new Futaba 7G radio S-30 servos found com bination Helicopter radio engine good Superior very relaxing fun fly also found super inverted flight performance equal whether inverted right-side-up Autorotations can carried out timed correctly wouldnt advise arbitrarily shut off motor shoot auto must have nega tive 40 main rotor pitch must time 156 Model Aviation FUEL LINE PIPING PROBLEM Size 3/32 DPnce $2 00LARGE 1 lee ElbOw 1 unron 1 Plug

RENO NATS High altitude hot weather August will have influence flights Reno Stead Field site Nats outdoor activity altitude about mile above sea level height combined expected temperatures 800 will place density altitude range between 8000 9000 feet Com bined high temperature altitude will af fect models though field height over 1 /2 miles Modelers regularly fly Reno well Colorado New Mexico tell us altitude has little effect Having witnessed few prob lems Reno Scale World Cham pionships 1982 aware effect Modelers accustomed conditions make compensation lack air density longer takeoff runs faster landings regular basis having make mental adjustments Higher nitro content fuel can replace some energy lost engines due lack oxygen Anyone experience full-size planes has flown high-altitude fields knows airspeed indicator reads same touchdown regardless altitude real difference manifested tire-squeal wheels meet runway unaccustomed higher velocity other words airspeed indicators sensing head needs moving greater speed less dense air give same reading lower altitude means stall speeds airspeed indicator therefore same altitudes temperatures Only ground speed varies Propellers wings need moving faster get same bite air less dense Delafield WI altitude 600 feet above sea level experience density phenomena seen perfor manc variations occur temperature fluctuations 400-foot-long club field barely long enough tall corn stalks critical end weather hot humid normal conditions through summer First flights during chill autumn always revelation short takeoff runs steeper climbs possible constitutes change about 8% air weight heavy Scale model marginal per formance low altitude can become un manageable flown surface 1 /2 miles high after successful takeoff first time wing loaded high-G maneuver will refuse carry model weight Modelers live high altitudes have learned importance building light using sufficient power Most modelers 48 Model Aviation Astronautmodeler Robert Hoot Gibson piloted last flight Space Shuttle February 1984and made first-ever Shuttle landing Florida photo shows him 1982 Seguin TX Nats scratch-built ducted-fan F-16 Dale Arvin used Robart Universal Scale wheels Top Fiite Vought F4U-1 D model Note weathered finish craft features operating flaps fabric-covered wings prototype functional exhaust stacks sliding canopy flaps 900 retractable gear although men tioned well bet tall wheel retracts too Lars Heimbro rest Swedish Scale team showed everyone well-prepared RC Scale model could fly well high densIty-altitude Reno NVsite 1982 RC Scale World Championships Lars Mitsubishi Zero shown taxiing off runway after official flight performed well Reno due large part its being lIghtweightonly 8 lb Swedish teams models lightweight Note vast area backgroundperfect flying territory own 1984 AMA National Contest coming August over-power planes get climb angle typically about 10 times abrupt possible full-size prototype hot afternoon Reno models wing has 25% 30% fewer air molecules work plane will need ground speed proportionately greater Engine fuel prop combinations become critical us could mean added nitro about 15% slightly higher prop pitch high nitro engine may seem run same rpm lower altitude because less drag blades low-density air increase efficiency use higher-pitch larger-diameter prop Swedes 7- 85-lb airplanes proved Reno suitable flying site Greater takeoff speeds can lead strange behavior quirks Hot runways can soften tires expand diameter due centrifugal force spun abnormally higher speed fast takeoff expand ing tire rubs strut interior wheel pants slow model preventing lift-off causing high-speed nose-over lost few props learning lesson Reno 82 model faults exaggerated flown under adverse conditions com bined high altitude high temperature Marginal tail-heaviness converts normally docile airplane uncontrollable beast always verge disaster Overweight underpowered models will Continued page 154 THE OLYIMLPJCV Ace R/C now offers American made alternative plastic imports Olympic V Time proven quality dependability sensible solid package tradition Silver Seven results unit perfect first time R/Cer sport flier So modeler can choose size type price range servo requires Olympic V furnished less servos Any modern positive pulse servos Ace other brand will work system connectors furnished So now alternative Ace Silver Seven performance import price Available approved 50 53 72 mHz channels RECEIVERTRANSMITTER Proven Silver Seven DesignFour channels standard fifth Wired five channels channel optional Gold plated Deans connectorsProven Silver Seven hi output 3/4 x 1-11/32 x 2-1/4 14 oz RF deck 500 ma Rechargeable NicdsOpen Gimbal Sticks Dual Charger furnishedRugged vinyl clad aluminum Servo connectors furnished case Expanded scale voltmeter monitor battery 20G500Olympic V SystemRechargeable Ni-cd equipped 96V @ 500 ma Assembled $14995Offset antenna maximum radiation Send $200 complete catalog Ace items available dealer order direct add $100 handling fee [AU I/C Em PO Box 511E Higginsville Mo 64037 816 584-7121 June 1984 49 George Roses P6E Hawk ready land Reno-Stead Airportsite 1984 AMA Nats 22-lb weight Lee Richters G-175 Beechcraft Staggerwing supported Du-Bro 4-in-diemeter wheels custom-built landing gear retracts air system Model spans 80 CONDOR IGNITION TACHOMETER lightweight compact instrument can hand-held mounted permanently aircraft boat provides digital readout RPM soon engine starts Ignition Tach has no switches engine stops running automatically switches Hobbs Meter-Type Mode providing readout time hours minutes DET 301 Retail $6995/Condor $4995 - TELE-TACHOMETER NEW Digicon TT-01 Tele-Tachometer first time can read engine RPM and/or airspeed actually flight No guessing Now youll know what engine prop plug fuel giving CdS sensors coupled sub miniature airborne TX send data hand-held unit Accurate RPM 30k airspeed 300 Km/h Audible stall warning RDF traces lost aircraft Retail $18495/Condor $14995 RC Soaring/Pruss Continued page 151 Quabecks Dohie design has four servos buried wing flap aileron section Synergy has no wingmounted servos drive flaps servo operates cranklike linkages extend fuselage flap roots Another single servo drives both ailerons through torque drives clever arrange ment can detach ailerons Yet another servo repositions both aileron flap servos affect camber changes ailerons taper proportionately wing flaps Flaps ailerons 22% wing chord Airfoil Quabeck 10/25/9 means 10% thick root thinning 9% tip camber 25% wing stabs foam covered fiberglass using vacuum-bag principal finish has mold-like quality Wingspan 120 11-in chord root eight-inch tip chord stab 10% wing area tail volume 36 Overall length 57 Empty bird flies 14-oz wing loading 112 oz Two pounds No 9 BB shot can carried ballast boosts wing loading 181/2 oz per sq ft So far bird has flown empty gratifying results also won South Bay Soaring Societys F3B design contest Good News/Bad News First bad news wonderful Midwest Sailplane events annual Great Race cross-country Sailplane race has cancelled year Blame cancellation has laid flying site problems Now good news Eastern Iowa Soaring Associaton sponsoring Cross Country Soaring meet held North Liberty IA Memodal Day weekend May 26-27 1984 will run according new 198485 AMA rules Provisional event have received new rule book time read can look up summary rules December 1982 issue Model viation page 109 appears Rules Proposal RC-84-27 Rules much like Great Race rules further information check witl Contest Director Terry Edmonds 1 Lakeview Dr Iowa City IA 52240 telephone numbers 319 353 5665 office 319 351-1517 home Just save trip dictionary synergy effort total greater combined efforts individuals Sounds like SBSS boys have come up just right name Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Scale/Wiscers Continued oaoe 49 fly relatively normal manner until unusual load appliedand can result steep turn bit too much up-elevator applied Gusty winds magnify faults model flies through wind shear conditions suddenly loses precious airspeed needle valve buried engine compartment beyond convenient adjust ment can lead loss critically necessary power important thing remem ber permit doomsday talk stop attendance Reno Nats Its great place fly well-prepared RC Scale models Battery wiring Extension cords make pos sible multitude servo battery ar rangements Scale models likely model types need longer-then-normal wire leads Most us use extensions have assumed wires suitable size carry current purposesand cases true However place batteries remote nose compartment switch located some distance further back receiver yet another location accumulated length wire may become equivalent stretched resistor particularly true large multi-function air planes servos power HOT STUFFTMVIDEO-TIPS VHS CASSETTES #S 2 CLIP THIS COUPON SEND $5500 check MO GET BOTH VHS TAPES PLUS 1 EA 2 oz HOT STUFF 2 oz SUPER T 3 oz HOT SHOT %7 FREE OFFEP GOOD IN U S ONLY THRU JUNE 84 PO BOX 836 SIMI CA 93062 805 522-0062 17971 Skypark Circle Suite 0 Irvine CA 92714 714 250-1425 Handling Charges COD -$475 Credit Card $475 • — Prepaid Order -$250 154 Model Aviation demand batteries high Conductors used model systems usually No 26 gauge wire made 19 strands 004-in-diameter wire reason fineness individual strands help prevent breakage occurs frequent bending avoid fracture due engine vibration points flexible lengths meet solid terminals such plugs sockets appli cation wire used models ideal type Problems arise try use No 26 wire long extension remote battery pack switch carries current servos receiver Glitches begin appear several servos driving simultaneously because voltage drop extension cord may occur freshly-charged batteries possibility exists Current-carrying capacity conductors measured cross section area combined strands specified circular mils No 26 area 0002 No 22 0005 No 20 0008 area dimensions can seen current-carrying capacity approxi mately doubles step 26 22 20 dimensions derived calcu lating area single strand rr R2 multiplied number strands wire other No 26 supplied model purposes will necessary make up switch harness Deans plugs sockets Ace RC Inc equivalent rewire battery pack heavier wire Standard model-type blocks con nectors No 26 wires attached adequate currently-available switches Noble DPDT Ace reliable As mentioned earlier greater numbers strands fine wire desirable No 20 wire sufficiently heavy longest battery connections wire has 10 strands common amount becomes quite stiff considerable risk vibration-fatigue adjacent solder joints Tape wire battery pack also switch body prevent motion near solder joint tape will distribute bending loads An alternate method increasing wire capacity use two No 26 wires parallel conductor Precautions against wire fracture should also observed method Erratum In ClAM Paris report page 117 March 1984 MA defi nition models flown Big Scale Models event conjunction Scale World Championships LeBourget July definition stated three engines maximum should jave three horsepower maximum Horsepower de termined manufacturers specifica tions Wheels Scale Wheel selection Scale models has always minor headaches Except planes can use Williams Brothers products wheels have correct appearance arent al ways easy find Scale projects have abandoned because no suitable wheels could found met critical standards know modelers have made own wheels tires obtain true Scale appear ance second problem wheels inability support weight heavier-than-average models Flat spots re sult prolonged parking spot especially hot pavement contests New wheels Carl Goldberg Models Inc have rubber compound sufficiently stiff resist deformation tires have ribbed tread out-of-scale lettering sidewalls can scraped sanded off Hubs standard six-spoke model-type can modified better Scale impression sizes 11/4 3/2 inches larger sizes 4 6 inches Giants Du-Bro Big Wheels have smooth tread inflatable pressure can increased support heavier model Du-Bros new Cub-type wheels 4-inch di ameter quarter-scale planes have ribbed tread although Cubs used come factory smooth treads Robarts Universal Scale wheels seen Scale models have tires low rebound thermoplastic rubber rea sonably authentic lettering sides glossy finish tires can readily re moved gentle rubbing cloth moist ened dope thinner Robart tires inflatable following manufacturers instructions prefer stuffing casings another tire smaller diameter stif fen sidewalls prevention flat spots parking Robart wheels supplied hub discs well suited modi fication enhance authenticity drilling filing shape Plywood styrene discs can epoxied hubs provide appearance depth Lightest-weight wheels have found Aeroscale Sig range size 2 5 inches have reasonable load-carrying capacity problem flat spots lightly-raised tread ribs can removed sharp razor blade smoother surface needed Astronaut modelers Robert Hoot Gib son NASA Astronaut pilot Feb ruary Space Shuttle flight Scale modeler placed third Sport Scale 1982 Seguin TX Nats model Hoot flew scratch-built General Dynamics F- 16 fighter Scozzi ducted fan unit K&B 75 engine Now 37 years old Hoot has flying full-size planes since age 10 received private pilots license 17 Both parents pilots An aeronautical engineer earned de gree California Polytechnical State Uni versity 1969 entered Navy flight training After 56 combat missions over Vietnam now has total 3000 flying hours 35 aircraft types recent Chal lenger flight added another 190 hours Mod eling full-scale seem have run parallel courses successful aviation career Dealers ributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Bos 2136 Fairfas Vrgino 22031 u 5 June 1984 155 MODEL MAGIC FILLER Balsa Foam Fiberglass Quick setting Sands like balsa Non toxic Easy use Light weight Non shrinking SuperiorStrength Adhesion & Flexibility Compatable finishes & coverings Model Magic TIP Month Tint MMF drop ot water color latex pigment 58 08 Retail R fi o 0 nd Model Magic Products PO Box 7784St Paul Mino 55119 715 425-1397 Fillets Gap tilling Ding repair See dealer first write call As Seen Toledo New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used Light weight Sandable Carveable Excellent Gap Fllinq Non Sagging Superior Strength 6 fI oz $895 lOfIoz $1195 Classic RIC Scale TI4 sGRAT LAK 40 Wing 15 25 Engines NEW FOURMOST PRODUCTS! FOURMOST RECOIL TUBING four foot length super-tough fuel-proof urethanetubing pre-formed intoa FOUR-INCH COIL allows placement yourfield box can convenient distance aircraft boat After use tubing will retract its earlier space-saving form Price$395 Lr / WE HAVE THE FITTING SOLUTION ORsmallSize 1/16 IDPrice $150 1 Tee 2 Elbows Pen Bladder Tee IO1 CTs 4040 24th Ave. Forest Grove OR 97116 PROD U F URM Telephone 503 357-2732 Other astronauts began careers modeling Neil Armstrong Frank Borman Neil member Purdue Aeromodelers club flew model air craft competitions years 1946 through 1950 member US Navy team 1949 Nats says model building flying activities signif icantly contributed interest aero nautics primary force directing education toward aeronautical engineer ing Frank Borman Chairman President Chief Executive Officer Eastern Airlines former astronaut agrees model aviation instills patience skill creativity importantly satisfaction job well done thrill witnessing takeoff flight successful return personallyconstructed model second ac tual experience flying says no wonder therefore almost aviators actually begin careers interest sparked hobby model aviation Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Pylon Racing/Hager Continued Daae 50 raceand win Thats what call positive thinking waitwhat about Wouldnt like go World Championship races representing USA Well lets get have lot lost time make up lot work think years Nats FAI Pylon event going perfect warm-up race will less just serve let us know much work will needed get ready World Championship race sky limit Its up now Just will go about selecting team has decided yet said will team report sent Zdenek Ma lina covering Czechoslovak FAI class F3D Championships 83 last F3D race flown Melnik air field towards end 1983 concluded Czechoslovak Pylon Racing season Malina brothers Milos Zdenek became overall victors third time row must said time victory close achieved best time far clocked Czechoslovakia82 sec onds second team Messrs Kunes Nadrchal second slower third team Novak Buber clocked still remarkable 88 seconds final 1983 race considered have rather high stan dard indeedof first 10 teams clocked times under 100 seconds Among remarkable perfor mances races flown 18-year-old Tiri Klein proved himself very good pilot having ably supported father/mechanic majority contestants flew Mus tangs Sharks Little Tony racers teams used new Czechoslovak MVVS 40 65cc glow engine continues prove its world-class reputation Among its virtues high reliability high power-output Everybody looks forward coming 1984 season hope host teams UK USA expected appearance British US contestants Europe reason behind agreement Italian Aeroclub dates schedule both FAI International contests arranged make both accessible modelers cradle Pylon Racingthe USAand UK Trofeo OPS will held Italy June 9 10 1984 Modela GP will flown week later June 16 17 1984 Czech oslovakia races being held close enough together enable attend both events one-week period Detailed information available following address Zdenek Malina Vlasim ska 210100 Praha 10 Czechoslovakia Top Ten Finishers Czechoslovak F3D Championships M Zd Malina846 sec 2 1 Kunes/Zd Nadrchal87 1 sec 3 M NovaklM Bub er880 sec 41 Padela/K Katzer900 sec 5 J Bily/J Husak90 sec 6 Zd Teply/Zd Teply908 sec 71 Vosmik D Vosmik932 sec 8 F l-lovorka/V Kucera963 sec 9 K Hacker/M Fia la990 sec 10 J Prachr/J Chalopuka998 sec think its time get FAI off back burner will keep posted still receive two three letters month asking join NMPRA Yearly dues non-fliers $13 flying members $18 Send Bev Wisniewski 9222 Cedar St No 2 Bellfiower CA 90706 See next month Bill Hager 706 Glen Haven Dr Conroe IX 77302 RC Helicopters/Jolly Continued page 51 came aerobatic maneuvers found extreme throws necessary perform loops rolls Consecutive maneuvers out question called Walt Schoonard importer Superior told him enigma told Schluter designed Superior FAI work machine must show extreme stability hovering maneuvers meant necessary tone down response rotor headwhich course hurt loops rolls After discussion Walt realized what meant Superior acro batic Helicopter market today will aerobatic maneuvers just takes room time complete maneuver General impression test model powered 05 61 FSR-H Helicopter engine controlled new Futaba 7G radio S-30 servos found com bination Helicopter radio engine good Superior very relaxing fun fly also found super inverted flight performance equal whether inverted right-side-up Autorotations can carried out timed correctly wouldnt advise arbitrarily shut off motor shoot auto must have nega tive 40 main rotor pitch must time 156 Model Aviation FUEL LINE PIPING PROBLEM Size 3/32 DPnce $2 00LARGE 1 lee ElbOw 1 unron 1 Plug