DURATION Bob Meuser CORRECTION sort caption photo AD-IS engine April issue said production planned FF World Champs told 20 30 engines per year being manufactured scarcely qualifies production Whether remains true whether production rate has increased result Mario Roccas winning World Champs engine clear nevertheless engine available two versions according Rocca Normal AD- 15 available manu facturer Alberto DallOglio Via Gagliardotti 13 36100 Vicenza Italy $130 plus $5 postage Free-Flight Tuned AD-15 available Mario Rocca 44040 Rovereto Ferrarese Italy $170 plus $5 postage Inter national Postal Money Order simplest method payment FF-tuned version cludes testing spinner pressure fitting largesection flood-off fitting enlarged venturi Delivery 30 days Ribs Italian Style Italian free-fighters have 52 Model Aviation Jam Leuken won coveted ulsa ulue U0Dbers Trophy 1977 Nationals first big naet Hes consistent winner outdoor HI gliders ever since Meuser photo longstanding penchant what has become known egg-crate geodetic construc tion wing tail surfaces competition classes Alberto DallOglio won 1963 Power World Champs model having diagonal ribs 2-cm 078 centers since time FAI Power fliers have drifted toward sheet-balsa-covered surfaces engines have become increasingly powerful quest greater rigidity Perhaps however Mario Roccas win 1979 World Cham pionship FAI Power egg-crate model will cause modelers pay attention interesting effective form construction Actually geodetic construction misnomer Some time thirties words applied mis-appliedto describe type diagonal construction far different use model aviation too dont see egg crates dividers set bias lack anything bettera flimsy justifi cation bestwe seem stuck terms egg-crate part nomenclature comes way ribs sometimes notched half-way through manner oldfashioned cardboard egg crate dividers went out fashion quarter century ago two popular ways taking care problem ribs cross other waythe popularis notch rib half-way through egg crate style other leave rib intact cut other rib through its full depth latter scheme warpage resulting glue shrinkage mini mized ribs apt end up bit wiggly construction looks terribly difficult least time-consuming Rocca claims quite contrary can pop ribs place evening hes practicing doesnt seem appropriate present com Continued page 121 July 1980 53 Phillip Nakashima holds dads Tadpole A/i towline glider readyto launch good air comes through Tadpole 1980 N FFS Model Steve Shibuya checks engine run scaled-down Moonraker 290 sq wing Year award winner Meuser photo area /2A competition Meuser photo often see reports aeromodeling activity India indebted Prasanta Banerjee forthese pictures Indias 33rd Nats Junior Mridul Boses Wakefield model uses 2-piece fuselage left Forward section dural tube aft rolled balsa boom Aluminum spinner hides Montreal stop Prop 20 diameter 22 pitch placed 4th Open Rubber right Deepak Bhowmic Calcutta Model Aero Club winning Open Glider design Meanderer Model utilizes 90/0 thick flapped Baguley airfoil 8 X 96 wing Orange black finish Kustom Krartsmanship Box 2699 Lagana Hills CA 92653 Engines engine rework L Machine Service 5847 N 67th St Milwaukee WI 53218 Engine rework K & W Enterprises 7824 Lexington Ave Philadelphia PA 19152 Fiberglass props FF DURATION/MEUSER continued page 53 plete blow-by-blow account type con struction perhaps few tips will help What want to first lay ribs slanting way follow up laying ribs slanting other way glue shrinkage humidity changes virtually guaranteed end up warps proper way first lay symmetrical zigzag ribs follow zigzag displaced right followed another left forth until run out ribs way left-handed glue joints right-handed ones warping unlikely Ribs can pre-notched bookkeeping seems overwhelming keeping track ribs notched whether top bottom alternative simply notch go can virtually guarantee omit notch fact will make itself abundantly apparent will take appropriate action So sense system seems fail-safe leading edge trailing edge bunch ribs wing make spars too required again conceivably could notch ribs spars before assembly starts simpler way least bookkeeping view point spar notching after ribs place ribs could conceivably shaped final profiles before assembly again seems appropriate simply install ribs balsa rectangles sand shape after wards properly shaped sanding block sandpaper glued plus template two would worthwhile investment time Ribless construction revisited Dave Gibson came up interesting variation Look Ma no ribs theme few months back came up idea some time ago trying simplify model building younger set sketch tells story key idea standard-size strip-wood used 4c\A 40 RIO $4299 61 RIO $6750 span-wise members leading edge trailing edge spars top-surface spar doesnt stick up far enough just prop up degree required get airfoil section choice Several people have questioned torsional rigidity such structures Unless go 1CALE geodetic construction about 90% torsional rigidity wing ends up results stiffness imparted covering torsional resistance framework essentially nil no reason expect ribless con struction would better worse July 1980 121 5% $595 10% $795 15% $850 ZIPS 00000thru49999350 500001hru79999250 80000thru99999175 California150 PRICES SUBJECT TO CHANGE July 29-25 juillut Uttawa UMarlo CANADA / 4 4/ AIIM PAIN ca*gave Acres Ad SCALE 80 PX 80X 9284 AtTA VSTA POSTAL STN OTTAWAONTARIO CANADA KIG ST9 ElitE CUAUMUIEUI y ITTAWA AUTISM CAUM conventional construction regard torsional rigidity Geodetic cross-rib construction creases torsional rigidity structure immensely ribs full depth airfoil attempt increase torsional stiffness ribless construction setting non-ribs angle chord would fruitless non-ribs simply dont have enough rigidity bending vertical direction thats what takes geodetic construction work Torsional resistance structure often correlated warp resistance cover ing put reasonable uniformity doped adequately excessively torsionally weak structures warpage big problem Ed Lidgard reports some 40ye ar-old wings straight day built Id able report about some 40-year-old wings too hadnt some cats discovered wings made fine beds some 386 years ago India Nats little know about India us Backward countries what used call developing nations fashionable expression nowadays Both equally accurate inaccurate equally superficial Overpopulation too little food religious dogmas cultural traditions inhibit progress scarcity natural resources industrial value typical dog-chasing-tail situation midst bunch fellers get jollies needling engines gluing stick stick B running over countryside towing Nordic gliders breaking rubber motors much like ourselves Severe import restrictions force make far less accustomed doubt ifDallOglio will find customers AD-iS engine $175 per copy have organization roughly equivalent AMA called India Aeromodellers Association Its president Bijay Manzil has title Maharajadhiraja Bahadur Burdwan Pretty classy Ill bet dont have half dozen Maharajadhirajas entire AMA membership cant recall ever becoming AMA president economic situation prevents attending World Champs other international meets hear little about What little know free flight activities comes Prasanta Banerjee Nordic flier editor Calcuttan sometimes occasional newsletter mimeo graphed poor grade paper would happier roll bathroom Prasanta Jt Secretary Treasurer FIC fliers arise like use expressions such F lC scarcely anybody understands because nobody understands what write automatically become big shot friend flying WakefieldF lB isfor some five years asked what VIT meant being dead certain myself explained meant Very Important Thing seemed satisfied editor believes might vari able incidence tail RBM Anyhow seems hard ignore current World Champ FIC FAI Power event used fiberglass pool cue tailboom just about time went out fashion NFFS laid mill order rather excellent booms doubt two three have ever sold selling price based purchase price some five years ago makes quite bargain could run vibration problems glass booms probably wont keep tailfeathers light ought anyhow make excellent RC sailplane booms too 42 long 52 diameter small end 8 big end weigh 59 grams Cut out section suits plane fancy Cost $7 plus 50t extra Parcel Post $150 First Class per order Order Karen Thompson 2012 Landon Lane Sacramento CA 95825 NFFS Model Year awards 1980 A/2 Towline Glider Mike Fantham England Wakefield Itzach Ben-Itzach Israel FAI Power Doug Galbreath Power Gil Morris Toothpicks Large Power Models Mark Woodrey Outdoor Rubber Chet Lanzo historic still winning Lanzo Stick Outdoor HLG Zingaroo Paul Lagan Mike Elmore Gary Bowden New Zealand A/l Glider George Xenakis Tadpole Indoor Rubber Jim Richmond worldrecord Starwalker Indoor Hand-Launch Glider Stan Stoy Tn-Folder special awards John Tatone timers Bob Hunter Hot Stuff Carl Goldberg invention pop-up-stabilizer form dethermalizer Nominate Nominations open NFFS Model Year Awards 1981 misprint Responsibility administration awards has changed hands year year past has resulted frantic scramble end year get nominations now have same chairman selection committee two years row least things have changed time struck flash genius inclined recommend someone consideration award Gather information can about nominee send however much little have Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Nominations made during year will carried forward next Awards made outstanding models course also kookie things like OldTimer movement Peanut Scale movement Seelig timer Rossi engine model has never won darned thing nevertheless outstanding some respect New Wakefield Record Bill Bogarts nineyear-old national record outdoor rubber power Wakefield models has broken byyoud never guessBob White Although Bob dropped two max flights out 80 competition July 1980 123 recent Nats Im sure what means know what Nats means means about what means us 1979 Nats produced 32-page slick-cover souvenir program wasnt just local meet pretentious title 33rd Nats have some perpetual trophies rival Mulvi hill heritage prestige Anyhow pleased present photos some modelers hardware India strikes oil watch out fellows next World Champs rWEVE EXPANOEI SCALt DRAWINGSPHOTOS BOOKLETS & A TECH NTERNAT ONA CATALOGS $20048500 C ENZ U _______________ VOA ORSOON 94US READY NOW AAmco Inc have issued three NEW R/C kits last two years best challenged anyone industry BIG-H QUIKRAY 500 very newest R/C kit X RAY AAmco issue new kit just sake putting out another kit new kits well planned Modeler also create sales Dealers Distributors because R/C kits own selling!! WHAT IS NEXT? WATCH MR GUS modelers industry has need kit like MR GUS very long time Lou Andrews AAmco guy company will issue RN during latter part 1979and two World Champshe has little opportunity crack record hard fly competition too occasion combined San Valeers California Eagles Annual Taft March 8 Thirteen straight maxes total score of57 minutes will probably stay books longer us will care Bol Meuser 4200 Gregory St Oakland CA 94619 RC ARROW/STUMPF continued page 63 firewall rear spinner balsa block fairs engine crutch spinner firewall firewall crutch block assembled epoxy Install firewall assembly four additional formers between fuselage sides add I5 sq stringer turtledeck cover fuselage top 3/32 sheet except canopy carved balsa block hollowed out approximately Vs thickness Now add Nyrod housings elevator throttle pushrods cover bottom fuselage 3/32 sheet Tail Surfaces tail surfaces made SEE YOUR LOCAL HOBBY DEALER send 25t catalog 34 span 020 power single channel tic orS1595 free flight ACUAKER FLASH FLYLINE MODELS INC 2820 DORA AVENUE B-Il FAIRFAX VIRGINIA 22031 703 573 2038 Rosies D&R Fbwer Pod Fits COX T- 0 & Med 049 051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon injection moulded Power 3 lb airplanes 5/ total weight 9 WE ALSO MAKE BANTAM Servos O&R Sticks Connectors Bulkhead Switch mounts TxSdsfety Switch duty gear Wwld widt u*omg 1ev D 8 R mI eshv fits pvo41cs 3501 -C W Moore St Santa Ana CA 92704 KIT S 9 HL GLIDERS 3 SATELLITE KITS 17 OLD TIME GAS Send 25 5 RUBBER 3 NORDIC 1980 catalog 9 COMPETITION GAS FUELand DTTIMERS-$1075each FAI Model Supply medium-hard balsa elevator halves joined 1/16 piano wire elevator uses continuous hinge made two -in wide strips iron-on covering material sure bevel trailing edge stabilizer before ironing hinge permit free move ment type hinge quite durable easily repaired Finish Trim Sand wood parts #200 sandpaper apply coat Coverite Balsarite product really helps covering stick Lightly sand foam wing remove mould flash irregularities wing ailerons covered red Solarfilm low temperature iron-on cover ing will fuselage tail covered white Econokote first time used product worked very well arrow fuselage sides 3/16 wide blue DJ Multistripe canopy outline / 16 black Multistripe canopy area painted silver An alternate finish think would look good US Air Force camouflage Radio Equipment Heathkit 8 channel trans mitter provides guidance Litco Micro Flight Pack Three micro servos control throttle ailerons elevator receiver 225-maH battery housed forward fuselage under fual tank reason advisable wrap plastic bags protec tion aileron servo mounted wing center elevator throttle servos installed fuselage Flying first flight August 21 1978 local test pilot Glenn Spacht Bob Aberle Ron Farkas author taking controls various occasions plenty time everyone since flight time 2-ounce tank 15 20 minutes Except two turns up elevator clevis no changes adjustments required later flights model has also flown MA columnists George Myers Nick Ziroli Straight Arrow has neutral stability maneuvers easily accomplished rolls inverted flight inside outside loops Cuban eights split-S hammer-head stalls etc landing keep approach speed fairly high go easy flair avoid ballooning Stalls pre ceeded wing droop easily avoided Although model definitely intended beginners tricky plane fly can fly Pacer similar iA pattern ship Straight Arrow will offer problems Flight charactertistics well summed up test pilot Glenn Spacht Similar Pacer better very precise FF SCALE/WARNER continued page 55 sheet tissue tube glue some dope thinner Neither very good source friendly advice help need Without local shop lose ways John OLeary writing Minne apolis Modeller relates following true anec dote About half dozen FF CL types assembled local hobby shop Friday before Christmas sharing holiday good tidings 124 Model Aviation two classics Flyline ITS HERE 11/2 Farman Moustique U Colors RED BLACK YELLOW ORANGE Write Free CUSTOM TUNED ENGINES COMPETITION CCESSORIES Special GY 014 X 60 solid lines $295 ppd Custom needle valves racing wheels quick fills fuel shut-offs rs detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 La guns Hills Calif 92653 Ph f7 14 830-5162 InesIoemounteauoX lUand MIBCOtttflrOtSIC includes muffler Neighbors noise conscious Ace sleeve throttle has almost no power loss improves speed climb rate
Edition: Model Aviation - 1980/07
Page Numbers: 52, 53, 121, 123, 124
DURATION Bob Meuser CORRECTION sort caption photo AD-IS engine April issue said production planned FF World Champs told 20 30 engines per year being manufactured scarcely qualifies production Whether remains true whether production rate has increased result Mario Roccas winning World Champs engine clear nevertheless engine available two versions according Rocca Normal AD- 15 available manu facturer Alberto DallOglio Via Gagliardotti 13 36100 Vicenza Italy $130 plus $5 postage Free-Flight Tuned AD-15 available Mario Rocca 44040 Rovereto Ferrarese Italy $170 plus $5 postage Inter national Postal Money Order simplest method payment FF-tuned version cludes testing spinner pressure fitting largesection flood-off fitting enlarged venturi Delivery 30 days Ribs Italian Style Italian free-fighters have 52 Model Aviation Jam Leuken won coveted ulsa ulue U0Dbers Trophy 1977 Nationals first big naet Hes consistent winner outdoor HI gliders ever since Meuser photo longstanding penchant what has become known egg-crate geodetic construc tion wing tail surfaces competition classes Alberto DallOglio won 1963 Power World Champs model having diagonal ribs 2-cm 078 centers since time FAI Power fliers have drifted toward sheet-balsa-covered surfaces engines have become increasingly powerful quest greater rigidity Perhaps however Mario Roccas win 1979 World Cham pionship FAI Power egg-crate model will cause modelers pay attention interesting effective form construction Actually geodetic construction misnomer Some time thirties words applied mis-appliedto describe type diagonal construction far different use model aviation too dont see egg crates dividers set bias lack anything bettera flimsy justifi cation bestwe seem stuck terms egg-crate part nomenclature comes way ribs sometimes notched half-way through manner oldfashioned cardboard egg crate dividers went out fashion quarter century ago two popular ways taking care problem ribs cross other waythe popularis notch rib half-way through egg crate style other leave rib intact cut other rib through its full depth latter scheme warpage resulting glue shrinkage mini mized ribs apt end up bit wiggly construction looks terribly difficult least time-consuming Rocca claims quite contrary can pop ribs place evening hes practicing doesnt seem appropriate present com Continued page 121 July 1980 53 Phillip Nakashima holds dads Tadpole A/i towline glider readyto launch good air comes through Tadpole 1980 N FFS Model Steve Shibuya checks engine run scaled-down Moonraker 290 sq wing Year award winner Meuser photo area /2A competition Meuser photo often see reports aeromodeling activity India indebted Prasanta Banerjee forthese pictures Indias 33rd Nats Junior Mridul Boses Wakefield model uses 2-piece fuselage left Forward section dural tube aft rolled balsa boom Aluminum spinner hides Montreal stop Prop 20 diameter 22 pitch placed 4th Open Rubber right Deepak Bhowmic Calcutta Model Aero Club winning Open Glider design Meanderer Model utilizes 90/0 thick flapped Baguley airfoil 8 X 96 wing Orange black finish Kustom Krartsmanship Box 2699 Lagana Hills CA 92653 Engines engine rework L Machine Service 5847 N 67th St Milwaukee WI 53218 Engine rework K & W Enterprises 7824 Lexington Ave Philadelphia PA 19152 Fiberglass props FF DURATION/MEUSER continued page 53 plete blow-by-blow account type con struction perhaps few tips will help What want to first lay ribs slanting way follow up laying ribs slanting other way glue shrinkage humidity changes virtually guaranteed end up warps proper way first lay symmetrical zigzag ribs follow zigzag displaced right followed another left forth until run out ribs way left-handed glue joints right-handed ones warping unlikely Ribs can pre-notched bookkeeping seems overwhelming keeping track ribs notched whether top bottom alternative simply notch go can virtually guarantee omit notch fact will make itself abundantly apparent will take appropriate action So sense system seems fail-safe leading edge trailing edge bunch ribs wing make spars too required again conceivably could notch ribs spars before assembly starts simpler way least bookkeeping view point spar notching after ribs place ribs could conceivably shaped final profiles before assembly again seems appropriate simply install ribs balsa rectangles sand shape after wards properly shaped sanding block sandpaper glued plus template two would worthwhile investment time Ribless construction revisited Dave Gibson came up interesting variation Look Ma no ribs theme few months back came up idea some time ago trying simplify model building younger set sketch tells story key idea standard-size strip-wood used 4c\A 40 RIO $4299 61 RIO $6750 span-wise members leading edge trailing edge spars top-surface spar doesnt stick up far enough just prop up degree required get airfoil section choice Several people have questioned torsional rigidity such structures Unless go 1CALE geodetic construction about 90% torsional rigidity wing ends up results stiffness imparted covering torsional resistance framework essentially nil no reason expect ribless con struction would better worse July 1980 121 5% $595 10% $795 15% $850 ZIPS 00000thru49999350 500001hru79999250 80000thru99999175 California150 PRICES SUBJECT TO CHANGE July 29-25 juillut Uttawa UMarlo CANADA / 4 4/ AIIM PAIN ca*gave Acres Ad SCALE 80 PX 80X 9284 AtTA VSTA POSTAL STN OTTAWAONTARIO CANADA KIG ST9 ElitE CUAUMUIEUI y ITTAWA AUTISM CAUM conventional construction regard torsional rigidity Geodetic cross-rib construction creases torsional rigidity structure immensely ribs full depth airfoil attempt increase torsional stiffness ribless construction setting non-ribs angle chord would fruitless non-ribs simply dont have enough rigidity bending vertical direction thats what takes geodetic construction work Torsional resistance structure often correlated warp resistance cover ing put reasonable uniformity doped adequately excessively torsionally weak structures warpage big problem Ed Lidgard reports some 40ye ar-old wings straight day built Id able report about some 40-year-old wings too hadnt some cats discovered wings made fine beds some 386 years ago India Nats little know about India us Backward countries what used call developing nations fashionable expression nowadays Both equally accurate inaccurate equally superficial Overpopulation too little food religious dogmas cultural traditions inhibit progress scarcity natural resources industrial value typical dog-chasing-tail situation midst bunch fellers get jollies needling engines gluing stick stick B running over countryside towing Nordic gliders breaking rubber motors much like ourselves Severe import restrictions force make far less accustomed doubt ifDallOglio will find customers AD-iS engine $175 per copy have organization roughly equivalent AMA called India Aeromodellers Association Its president Bijay Manzil has title Maharajadhiraja Bahadur Burdwan Pretty classy Ill bet dont have half dozen Maharajadhirajas entire AMA membership cant recall ever becoming AMA president economic situation prevents attending World Champs other international meets hear little about What little know free flight activities comes Prasanta Banerjee Nordic flier editor Calcuttan sometimes occasional newsletter mimeo graphed poor grade paper would happier roll bathroom Prasanta Jt Secretary Treasurer FIC fliers arise like use expressions such F lC scarcely anybody understands because nobody understands what write automatically become big shot friend flying WakefieldF lB isfor some five years asked what VIT meant being dead certain myself explained meant Very Important Thing seemed satisfied editor believes might vari able incidence tail RBM Anyhow seems hard ignore current World Champ FIC FAI Power event used fiberglass pool cue tailboom just about time went out fashion NFFS laid mill order rather excellent booms doubt two three have ever sold selling price based purchase price some five years ago makes quite bargain could run vibration problems glass booms probably wont keep tailfeathers light ought anyhow make excellent RC sailplane booms too 42 long 52 diameter small end 8 big end weigh 59 grams Cut out section suits plane fancy Cost $7 plus 50t extra Parcel Post $150 First Class per order Order Karen Thompson 2012 Landon Lane Sacramento CA 95825 NFFS Model Year awards 1980 A/2 Towline Glider Mike Fantham England Wakefield Itzach Ben-Itzach Israel FAI Power Doug Galbreath Power Gil Morris Toothpicks Large Power Models Mark Woodrey Outdoor Rubber Chet Lanzo historic still winning Lanzo Stick Outdoor HLG Zingaroo Paul Lagan Mike Elmore Gary Bowden New Zealand A/l Glider George Xenakis Tadpole Indoor Rubber Jim Richmond worldrecord Starwalker Indoor Hand-Launch Glider Stan Stoy Tn-Folder special awards John Tatone timers Bob Hunter Hot Stuff Carl Goldberg invention pop-up-stabilizer form dethermalizer Nominate Nominations open NFFS Model Year Awards 1981 misprint Responsibility administration awards has changed hands year year past has resulted frantic scramble end year get nominations now have same chairman selection committee two years row least things have changed time struck flash genius inclined recommend someone consideration award Gather information can about nominee send however much little have Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Nominations made during year will carried forward next Awards made outstanding models course also kookie things like OldTimer movement Peanut Scale movement Seelig timer Rossi engine model has never won darned thing nevertheless outstanding some respect New Wakefield Record Bill Bogarts nineyear-old national record outdoor rubber power Wakefield models has broken byyoud never guessBob White Although Bob dropped two max flights out 80 competition July 1980 123 recent Nats Im sure what means know what Nats means means about what means us 1979 Nats produced 32-page slick-cover souvenir program wasnt just local meet pretentious title 33rd Nats have some perpetual trophies rival Mulvi hill heritage prestige Anyhow pleased present photos some modelers hardware India strikes oil watch out fellows next World Champs rWEVE EXPANOEI SCALt DRAWINGSPHOTOS BOOKLETS & A TECH NTERNAT ONA CATALOGS $20048500 C ENZ U _______________ VOA ORSOON 94US READY NOW AAmco Inc have issued three NEW R/C kits last two years best challenged anyone industry BIG-H QUIKRAY 500 very newest R/C kit X RAY AAmco issue new kit just sake putting out another kit new kits well planned Modeler also create sales Dealers Distributors because R/C kits own selling!! WHAT IS NEXT? WATCH MR GUS modelers industry has need kit like MR GUS very long time Lou Andrews AAmco guy company will issue RN during latter part 1979and two World Champshe has little opportunity crack record hard fly competition too occasion combined San Valeers California Eagles Annual Taft March 8 Thirteen straight maxes total score of57 minutes will probably stay books longer us will care Bol Meuser 4200 Gregory St Oakland CA 94619 RC ARROW/STUMPF continued page 63 firewall rear spinner balsa block fairs engine crutch spinner firewall firewall crutch block assembled epoxy Install firewall assembly four additional formers between fuselage sides add I5 sq stringer turtledeck cover fuselage top 3/32 sheet except canopy carved balsa block hollowed out approximately Vs thickness Now add Nyrod housings elevator throttle pushrods cover bottom fuselage 3/32 sheet Tail Surfaces tail surfaces made SEE YOUR LOCAL HOBBY DEALER send 25t catalog 34 span 020 power single channel tic orS1595 free flight ACUAKER FLASH FLYLINE MODELS INC 2820 DORA AVENUE B-Il FAIRFAX VIRGINIA 22031 703 573 2038 Rosies D&R Fbwer Pod Fits COX T- 0 & Med 049 051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon injection moulded Power 3 lb airplanes 5/ total weight 9 WE ALSO MAKE BANTAM Servos O&R Sticks Connectors Bulkhead Switch mounts TxSdsfety Switch duty gear Wwld widt u*omg 1ev D 8 R mI eshv fits pvo41cs 3501 -C W Moore St Santa Ana CA 92704 KIT S 9 HL GLIDERS 3 SATELLITE KITS 17 OLD TIME GAS Send 25 5 RUBBER 3 NORDIC 1980 catalog 9 COMPETITION GAS FUELand DTTIMERS-$1075each FAI Model Supply medium-hard balsa elevator halves joined 1/16 piano wire elevator uses continuous hinge made two -in wide strips iron-on covering material sure bevel trailing edge stabilizer before ironing hinge permit free move ment type hinge quite durable easily repaired Finish Trim Sand wood parts #200 sandpaper apply coat Coverite Balsarite product really helps covering stick Lightly sand foam wing remove mould flash irregularities wing ailerons covered red Solarfilm low temperature iron-on cover ing will fuselage tail covered white Econokote first time used product worked very well arrow fuselage sides 3/16 wide blue DJ Multistripe canopy outline / 16 black Multistripe canopy area painted silver An alternate finish think would look good US Air Force camouflage Radio Equipment Heathkit 8 channel trans mitter provides guidance Litco Micro Flight Pack Three micro servos control throttle ailerons elevator receiver 225-maH battery housed forward fuselage under fual tank reason advisable wrap plastic bags protec tion aileron servo mounted wing center elevator throttle servos installed fuselage Flying first flight August 21 1978 local test pilot Glenn Spacht Bob Aberle Ron Farkas author taking controls various occasions plenty time everyone since flight time 2-ounce tank 15 20 minutes Except two turns up elevator clevis no changes adjustments required later flights model has also flown MA columnists George Myers Nick Ziroli Straight Arrow has neutral stability maneuvers easily accomplished rolls inverted flight inside outside loops Cuban eights split-S hammer-head stalls etc landing keep approach speed fairly high go easy flair avoid ballooning Stalls pre ceeded wing droop easily avoided Although model definitely intended beginners tricky plane fly can fly Pacer similar iA pattern ship Straight Arrow will offer problems Flight charactertistics well summed up test pilot Glenn Spacht Similar Pacer better very precise FF SCALE/WARNER continued page 55 sheet tissue tube glue some dope thinner Neither very good source friendly advice help need Without local shop lose ways John OLeary writing Minne apolis Modeller relates following true anec dote About half dozen FF CL types assembled local hobby shop Friday before Christmas sharing holiday good tidings 124 Model Aviation two classics Flyline ITS HERE 11/2 Farman Moustique U Colors RED BLACK YELLOW ORANGE Write Free CUSTOM TUNED ENGINES COMPETITION CCESSORIES Special GY 014 X 60 solid lines $295 ppd Custom needle valves racing wheels quick fills fuel shut-offs rs detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 La guns Hills Calif 92653 Ph f7 14 830-5162 InesIoemounteauoX lUand MIBCOtttflrOtSIC includes muffler Neighbors noise conscious Ace sleeve throttle has almost no power loss improves speed climb rate
Edition: Model Aviation - 1980/07
Page Numbers: 52, 53, 121, 123, 124
DURATION Bob Meuser CORRECTION sort caption photo AD-IS engine April issue said production planned FF World Champs told 20 30 engines per year being manufactured scarcely qualifies production Whether remains true whether production rate has increased result Mario Roccas winning World Champs engine clear nevertheless engine available two versions according Rocca Normal AD- 15 available manu facturer Alberto DallOglio Via Gagliardotti 13 36100 Vicenza Italy $130 plus $5 postage Free-Flight Tuned AD-15 available Mario Rocca 44040 Rovereto Ferrarese Italy $170 plus $5 postage Inter national Postal Money Order simplest method payment FF-tuned version cludes testing spinner pressure fitting largesection flood-off fitting enlarged venturi Delivery 30 days Ribs Italian Style Italian free-fighters have 52 Model Aviation Jam Leuken won coveted ulsa ulue U0Dbers Trophy 1977 Nationals first big naet Hes consistent winner outdoor HI gliders ever since Meuser photo longstanding penchant what has become known egg-crate geodetic construc tion wing tail surfaces competition classes Alberto DallOglio won 1963 Power World Champs model having diagonal ribs 2-cm 078 centers since time FAI Power fliers have drifted toward sheet-balsa-covered surfaces engines have become increasingly powerful quest greater rigidity Perhaps however Mario Roccas win 1979 World Cham pionship FAI Power egg-crate model will cause modelers pay attention interesting effective form construction Actually geodetic construction misnomer Some time thirties words applied mis-appliedto describe type diagonal construction far different use model aviation too dont see egg crates dividers set bias lack anything bettera flimsy justifi cation bestwe seem stuck terms egg-crate part nomenclature comes way ribs sometimes notched half-way through manner oldfashioned cardboard egg crate dividers went out fashion quarter century ago two popular ways taking care problem ribs cross other waythe popularis notch rib half-way through egg crate style other leave rib intact cut other rib through its full depth latter scheme warpage resulting glue shrinkage mini mized ribs apt end up bit wiggly construction looks terribly difficult least time-consuming Rocca claims quite contrary can pop ribs place evening hes practicing doesnt seem appropriate present com Continued page 121 July 1980 53 Phillip Nakashima holds dads Tadpole A/i towline glider readyto launch good air comes through Tadpole 1980 N FFS Model Steve Shibuya checks engine run scaled-down Moonraker 290 sq wing Year award winner Meuser photo area /2A competition Meuser photo often see reports aeromodeling activity India indebted Prasanta Banerjee forthese pictures Indias 33rd Nats Junior Mridul Boses Wakefield model uses 2-piece fuselage left Forward section dural tube aft rolled balsa boom Aluminum spinner hides Montreal stop Prop 20 diameter 22 pitch placed 4th Open Rubber right Deepak Bhowmic Calcutta Model Aero Club winning Open Glider design Meanderer Model utilizes 90/0 thick flapped Baguley airfoil 8 X 96 wing Orange black finish Kustom Krartsmanship Box 2699 Lagana Hills CA 92653 Engines engine rework L Machine Service 5847 N 67th St Milwaukee WI 53218 Engine rework K & W Enterprises 7824 Lexington Ave Philadelphia PA 19152 Fiberglass props FF DURATION/MEUSER continued page 53 plete blow-by-blow account type con struction perhaps few tips will help What want to first lay ribs slanting way follow up laying ribs slanting other way glue shrinkage humidity changes virtually guaranteed end up warps proper way first lay symmetrical zigzag ribs follow zigzag displaced right followed another left forth until run out ribs way left-handed glue joints right-handed ones warping unlikely Ribs can pre-notched bookkeeping seems overwhelming keeping track ribs notched whether top bottom alternative simply notch go can virtually guarantee omit notch fact will make itself abundantly apparent will take appropriate action So sense system seems fail-safe leading edge trailing edge bunch ribs wing make spars too required again conceivably could notch ribs spars before assembly starts simpler way least bookkeeping view point spar notching after ribs place ribs could conceivably shaped final profiles before assembly again seems appropriate simply install ribs balsa rectangles sand shape after wards properly shaped sanding block sandpaper glued plus template two would worthwhile investment time Ribless construction revisited Dave Gibson came up interesting variation Look Ma no ribs theme few months back came up idea some time ago trying simplify model building younger set sketch tells story key idea standard-size strip-wood used 4c\A 40 RIO $4299 61 RIO $6750 span-wise members leading edge trailing edge spars top-surface spar doesnt stick up far enough just prop up degree required get airfoil section choice Several people have questioned torsional rigidity such structures Unless go 1CALE geodetic construction about 90% torsional rigidity wing ends up results stiffness imparted covering torsional resistance framework essentially nil no reason expect ribless con struction would better worse July 1980 121 5% $595 10% $795 15% $850 ZIPS 00000thru49999350 500001hru79999250 80000thru99999175 California150 PRICES SUBJECT TO CHANGE July 29-25 juillut Uttawa UMarlo CANADA / 4 4/ AIIM PAIN ca*gave Acres Ad SCALE 80 PX 80X 9284 AtTA VSTA POSTAL STN OTTAWAONTARIO CANADA KIG ST9 ElitE CUAUMUIEUI y ITTAWA AUTISM CAUM conventional construction regard torsional rigidity Geodetic cross-rib construction creases torsional rigidity structure immensely ribs full depth airfoil attempt increase torsional stiffness ribless construction setting non-ribs angle chord would fruitless non-ribs simply dont have enough rigidity bending vertical direction thats what takes geodetic construction work Torsional resistance structure often correlated warp resistance cover ing put reasonable uniformity doped adequately excessively torsionally weak structures warpage big problem Ed Lidgard reports some 40ye ar-old wings straight day built Id able report about some 40-year-old wings too hadnt some cats discovered wings made fine beds some 386 years ago India Nats little know about India us Backward countries what used call developing nations fashionable expression nowadays Both equally accurate inaccurate equally superficial Overpopulation too little food religious dogmas cultural traditions inhibit progress scarcity natural resources industrial value typical dog-chasing-tail situation midst bunch fellers get jollies needling engines gluing stick stick B running over countryside towing Nordic gliders breaking rubber motors much like ourselves Severe import restrictions force make far less accustomed doubt ifDallOglio will find customers AD-iS engine $175 per copy have organization roughly equivalent AMA called India Aeromodellers Association Its president Bijay Manzil has title Maharajadhiraja Bahadur Burdwan Pretty classy Ill bet dont have half dozen Maharajadhirajas entire AMA membership cant recall ever becoming AMA president economic situation prevents attending World Champs other international meets hear little about What little know free flight activities comes Prasanta Banerjee Nordic flier editor Calcuttan sometimes occasional newsletter mimeo graphed poor grade paper would happier roll bathroom Prasanta Jt Secretary Treasurer FIC fliers arise like use expressions such F lC scarcely anybody understands because nobody understands what write automatically become big shot friend flying WakefieldF lB isfor some five years asked what VIT meant being dead certain myself explained meant Very Important Thing seemed satisfied editor believes might vari able incidence tail RBM Anyhow seems hard ignore current World Champ FIC FAI Power event used fiberglass pool cue tailboom just about time went out fashion NFFS laid mill order rather excellent booms doubt two three have ever sold selling price based purchase price some five years ago makes quite bargain could run vibration problems glass booms probably wont keep tailfeathers light ought anyhow make excellent RC sailplane booms too 42 long 52 diameter small end 8 big end weigh 59 grams Cut out section suits plane fancy Cost $7 plus 50t extra Parcel Post $150 First Class per order Order Karen Thompson 2012 Landon Lane Sacramento CA 95825 NFFS Model Year awards 1980 A/2 Towline Glider Mike Fantham England Wakefield Itzach Ben-Itzach Israel FAI Power Doug Galbreath Power Gil Morris Toothpicks Large Power Models Mark Woodrey Outdoor Rubber Chet Lanzo historic still winning Lanzo Stick Outdoor HLG Zingaroo Paul Lagan Mike Elmore Gary Bowden New Zealand A/l Glider George Xenakis Tadpole Indoor Rubber Jim Richmond worldrecord Starwalker Indoor Hand-Launch Glider Stan Stoy Tn-Folder special awards John Tatone timers Bob Hunter Hot Stuff Carl Goldberg invention pop-up-stabilizer form dethermalizer Nominate Nominations open NFFS Model Year Awards 1981 misprint Responsibility administration awards has changed hands year year past has resulted frantic scramble end year get nominations now have same chairman selection committee two years row least things have changed time struck flash genius inclined recommend someone consideration award Gather information can about nominee send however much little have Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Nominations made during year will carried forward next Awards made outstanding models course also kookie things like OldTimer movement Peanut Scale movement Seelig timer Rossi engine model has never won darned thing nevertheless outstanding some respect New Wakefield Record Bill Bogarts nineyear-old national record outdoor rubber power Wakefield models has broken byyoud never guessBob White Although Bob dropped two max flights out 80 competition July 1980 123 recent Nats Im sure what means know what Nats means means about what means us 1979 Nats produced 32-page slick-cover souvenir program wasnt just local meet pretentious title 33rd Nats have some perpetual trophies rival Mulvi hill heritage prestige Anyhow pleased present photos some modelers hardware India strikes oil watch out fellows next World Champs rWEVE EXPANOEI SCALt DRAWINGSPHOTOS BOOKLETS & A TECH NTERNAT ONA CATALOGS $20048500 C ENZ U _______________ VOA ORSOON 94US READY NOW AAmco Inc have issued three NEW R/C kits last two years best challenged anyone industry BIG-H QUIKRAY 500 very newest R/C kit X RAY AAmco issue new kit just sake putting out another kit new kits well planned Modeler also create sales Dealers Distributors because R/C kits own selling!! WHAT IS NEXT? WATCH MR GUS modelers industry has need kit like MR GUS very long time Lou Andrews AAmco guy company will issue RN during latter part 1979and two World Champshe has little opportunity crack record hard fly competition too occasion combined San Valeers California Eagles Annual Taft March 8 Thirteen straight maxes total score of57 minutes will probably stay books longer us will care Bol Meuser 4200 Gregory St Oakland CA 94619 RC ARROW/STUMPF continued page 63 firewall rear spinner balsa block fairs engine crutch spinner firewall firewall crutch block assembled epoxy Install firewall assembly four additional formers between fuselage sides add I5 sq stringer turtledeck cover fuselage top 3/32 sheet except canopy carved balsa block hollowed out approximately Vs thickness Now add Nyrod housings elevator throttle pushrods cover bottom fuselage 3/32 sheet Tail Surfaces tail surfaces made SEE YOUR LOCAL HOBBY DEALER send 25t catalog 34 span 020 power single channel tic orS1595 free flight ACUAKER FLASH FLYLINE MODELS INC 2820 DORA AVENUE B-Il FAIRFAX VIRGINIA 22031 703 573 2038 Rosies D&R Fbwer Pod Fits COX T- 0 & Med 049 051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon injection moulded Power 3 lb airplanes 5/ total weight 9 WE ALSO MAKE BANTAM Servos O&R Sticks Connectors Bulkhead Switch mounts TxSdsfety Switch duty gear Wwld widt u*omg 1ev D 8 R mI eshv fits pvo41cs 3501 -C W Moore St Santa Ana CA 92704 KIT S 9 HL GLIDERS 3 SATELLITE KITS 17 OLD TIME GAS Send 25 5 RUBBER 3 NORDIC 1980 catalog 9 COMPETITION GAS FUELand DTTIMERS-$1075each FAI Model Supply medium-hard balsa elevator halves joined 1/16 piano wire elevator uses continuous hinge made two -in wide strips iron-on covering material sure bevel trailing edge stabilizer before ironing hinge permit free move ment type hinge quite durable easily repaired Finish Trim Sand wood parts #200 sandpaper apply coat Coverite Balsarite product really helps covering stick Lightly sand foam wing remove mould flash irregularities wing ailerons covered red Solarfilm low temperature iron-on cover ing will fuselage tail covered white Econokote first time used product worked very well arrow fuselage sides 3/16 wide blue DJ Multistripe canopy outline / 16 black Multistripe canopy area painted silver An alternate finish think would look good US Air Force camouflage Radio Equipment Heathkit 8 channel trans mitter provides guidance Litco Micro Flight Pack Three micro servos control throttle ailerons elevator receiver 225-maH battery housed forward fuselage under fual tank reason advisable wrap plastic bags protec tion aileron servo mounted wing center elevator throttle servos installed fuselage Flying first flight August 21 1978 local test pilot Glenn Spacht Bob Aberle Ron Farkas author taking controls various occasions plenty time everyone since flight time 2-ounce tank 15 20 minutes Except two turns up elevator clevis no changes adjustments required later flights model has also flown MA columnists George Myers Nick Ziroli Straight Arrow has neutral stability maneuvers easily accomplished rolls inverted flight inside outside loops Cuban eights split-S hammer-head stalls etc landing keep approach speed fairly high go easy flair avoid ballooning Stalls pre ceeded wing droop easily avoided Although model definitely intended beginners tricky plane fly can fly Pacer similar iA pattern ship Straight Arrow will offer problems Flight charactertistics well summed up test pilot Glenn Spacht Similar Pacer better very precise FF SCALE/WARNER continued page 55 sheet tissue tube glue some dope thinner Neither very good source friendly advice help need Without local shop lose ways John OLeary writing Minne apolis Modeller relates following true anec dote About half dozen FF CL types assembled local hobby shop Friday before Christmas sharing holiday good tidings 124 Model Aviation two classics Flyline ITS HERE 11/2 Farman Moustique U Colors RED BLACK YELLOW ORANGE Write Free CUSTOM TUNED ENGINES COMPETITION CCESSORIES Special GY 014 X 60 solid lines $295 ppd Custom needle valves racing wheels quick fills fuel shut-offs rs detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 La guns Hills Calif 92653 Ph f7 14 830-5162 InesIoemounteauoX lUand MIBCOtttflrOtSIC includes muffler Neighbors noise conscious Ace sleeve throttle has almost no power loss improves speed climb rate
Edition: Model Aviation - 1980/07
Page Numbers: 52, 53, 121, 123, 124
DURATION Bob Meuser CORRECTION sort caption photo AD-IS engine April issue said production planned FF World Champs told 20 30 engines per year being manufactured scarcely qualifies production Whether remains true whether production rate has increased result Mario Roccas winning World Champs engine clear nevertheless engine available two versions according Rocca Normal AD- 15 available manu facturer Alberto DallOglio Via Gagliardotti 13 36100 Vicenza Italy $130 plus $5 postage Free-Flight Tuned AD-15 available Mario Rocca 44040 Rovereto Ferrarese Italy $170 plus $5 postage Inter national Postal Money Order simplest method payment FF-tuned version cludes testing spinner pressure fitting largesection flood-off fitting enlarged venturi Delivery 30 days Ribs Italian Style Italian free-fighters have 52 Model Aviation Jam Leuken won coveted ulsa ulue U0Dbers Trophy 1977 Nationals first big naet Hes consistent winner outdoor HI gliders ever since Meuser photo longstanding penchant what has become known egg-crate geodetic construc tion wing tail surfaces competition classes Alberto DallOglio won 1963 Power World Champs model having diagonal ribs 2-cm 078 centers since time FAI Power fliers have drifted toward sheet-balsa-covered surfaces engines have become increasingly powerful quest greater rigidity Perhaps however Mario Roccas win 1979 World Cham pionship FAI Power egg-crate model will cause modelers pay attention interesting effective form construction Actually geodetic construction misnomer Some time thirties words applied mis-appliedto describe type diagonal construction far different use model aviation too dont see egg crates dividers set bias lack anything bettera flimsy justifi cation bestwe seem stuck terms egg-crate part nomenclature comes way ribs sometimes notched half-way through manner oldfashioned cardboard egg crate dividers went out fashion quarter century ago two popular ways taking care problem ribs cross other waythe popularis notch rib half-way through egg crate style other leave rib intact cut other rib through its full depth latter scheme warpage resulting glue shrinkage mini mized ribs apt end up bit wiggly construction looks terribly difficult least time-consuming Rocca claims quite contrary can pop ribs place evening hes practicing doesnt seem appropriate present com Continued page 121 July 1980 53 Phillip Nakashima holds dads Tadpole A/i towline glider readyto launch good air comes through Tadpole 1980 N FFS Model Steve Shibuya checks engine run scaled-down Moonraker 290 sq wing Year award winner Meuser photo area /2A competition Meuser photo often see reports aeromodeling activity India indebted Prasanta Banerjee forthese pictures Indias 33rd Nats Junior Mridul Boses Wakefield model uses 2-piece fuselage left Forward section dural tube aft rolled balsa boom Aluminum spinner hides Montreal stop Prop 20 diameter 22 pitch placed 4th Open Rubber right Deepak Bhowmic Calcutta Model Aero Club winning Open Glider design Meanderer Model utilizes 90/0 thick flapped Baguley airfoil 8 X 96 wing Orange black finish Kustom Krartsmanship Box 2699 Lagana Hills CA 92653 Engines engine rework L Machine Service 5847 N 67th St Milwaukee WI 53218 Engine rework K & W Enterprises 7824 Lexington Ave Philadelphia PA 19152 Fiberglass props FF DURATION/MEUSER continued page 53 plete blow-by-blow account type con struction perhaps few tips will help What want to first lay ribs slanting way follow up laying ribs slanting other way glue shrinkage humidity changes virtually guaranteed end up warps proper way first lay symmetrical zigzag ribs follow zigzag displaced right followed another left forth until run out ribs way left-handed glue joints right-handed ones warping unlikely Ribs can pre-notched bookkeeping seems overwhelming keeping track ribs notched whether top bottom alternative simply notch go can virtually guarantee omit notch fact will make itself abundantly apparent will take appropriate action So sense system seems fail-safe leading edge trailing edge bunch ribs wing make spars too required again conceivably could notch ribs spars before assembly starts simpler way least bookkeeping view point spar notching after ribs place ribs could conceivably shaped final profiles before assembly again seems appropriate simply install ribs balsa rectangles sand shape after wards properly shaped sanding block sandpaper glued plus template two would worthwhile investment time Ribless construction revisited Dave Gibson came up interesting variation Look Ma no ribs theme few months back came up idea some time ago trying simplify model building younger set sketch tells story key idea standard-size strip-wood used 4c\A 40 RIO $4299 61 RIO $6750 span-wise members leading edge trailing edge spars top-surface spar doesnt stick up far enough just prop up degree required get airfoil section choice Several people have questioned torsional rigidity such structures Unless go 1CALE geodetic construction about 90% torsional rigidity wing ends up results stiffness imparted covering torsional resistance framework essentially nil no reason expect ribless con struction would better worse July 1980 121 5% $595 10% $795 15% $850 ZIPS 00000thru49999350 500001hru79999250 80000thru99999175 California150 PRICES SUBJECT TO CHANGE July 29-25 juillut Uttawa UMarlo CANADA / 4 4/ AIIM PAIN ca*gave Acres Ad SCALE 80 PX 80X 9284 AtTA VSTA POSTAL STN OTTAWAONTARIO CANADA KIG ST9 ElitE CUAUMUIEUI y ITTAWA AUTISM CAUM conventional construction regard torsional rigidity Geodetic cross-rib construction creases torsional rigidity structure immensely ribs full depth airfoil attempt increase torsional stiffness ribless construction setting non-ribs angle chord would fruitless non-ribs simply dont have enough rigidity bending vertical direction thats what takes geodetic construction work Torsional resistance structure often correlated warp resistance cover ing put reasonable uniformity doped adequately excessively torsionally weak structures warpage big problem Ed Lidgard reports some 40ye ar-old wings straight day built Id able report about some 40-year-old wings too hadnt some cats discovered wings made fine beds some 386 years ago India Nats little know about India us Backward countries what used call developing nations fashionable expression nowadays Both equally accurate inaccurate equally superficial Overpopulation too little food religious dogmas cultural traditions inhibit progress scarcity natural resources industrial value typical dog-chasing-tail situation midst bunch fellers get jollies needling engines gluing stick stick B running over countryside towing Nordic gliders breaking rubber motors much like ourselves Severe import restrictions force make far less accustomed doubt ifDallOglio will find customers AD-iS engine $175 per copy have organization roughly equivalent AMA called India Aeromodellers Association Its president Bijay Manzil has title Maharajadhiraja Bahadur Burdwan Pretty classy Ill bet dont have half dozen Maharajadhirajas entire AMA membership cant recall ever becoming AMA president economic situation prevents attending World Champs other international meets hear little about What little know free flight activities comes Prasanta Banerjee Nordic flier editor Calcuttan sometimes occasional newsletter mimeo graphed poor grade paper would happier roll bathroom Prasanta Jt Secretary Treasurer FIC fliers arise like use expressions such F lC scarcely anybody understands because nobody understands what write automatically become big shot friend flying WakefieldF lB isfor some five years asked what VIT meant being dead certain myself explained meant Very Important Thing seemed satisfied editor believes might vari able incidence tail RBM Anyhow seems hard ignore current World Champ FIC FAI Power event used fiberglass pool cue tailboom just about time went out fashion NFFS laid mill order rather excellent booms doubt two three have ever sold selling price based purchase price some five years ago makes quite bargain could run vibration problems glass booms probably wont keep tailfeathers light ought anyhow make excellent RC sailplane booms too 42 long 52 diameter small end 8 big end weigh 59 grams Cut out section suits plane fancy Cost $7 plus 50t extra Parcel Post $150 First Class per order Order Karen Thompson 2012 Landon Lane Sacramento CA 95825 NFFS Model Year awards 1980 A/2 Towline Glider Mike Fantham England Wakefield Itzach Ben-Itzach Israel FAI Power Doug Galbreath Power Gil Morris Toothpicks Large Power Models Mark Woodrey Outdoor Rubber Chet Lanzo historic still winning Lanzo Stick Outdoor HLG Zingaroo Paul Lagan Mike Elmore Gary Bowden New Zealand A/l Glider George Xenakis Tadpole Indoor Rubber Jim Richmond worldrecord Starwalker Indoor Hand-Launch Glider Stan Stoy Tn-Folder special awards John Tatone timers Bob Hunter Hot Stuff Carl Goldberg invention pop-up-stabilizer form dethermalizer Nominate Nominations open NFFS Model Year Awards 1981 misprint Responsibility administration awards has changed hands year year past has resulted frantic scramble end year get nominations now have same chairman selection committee two years row least things have changed time struck flash genius inclined recommend someone consideration award Gather information can about nominee send however much little have Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Nominations made during year will carried forward next Awards made outstanding models course also kookie things like OldTimer movement Peanut Scale movement Seelig timer Rossi engine model has never won darned thing nevertheless outstanding some respect New Wakefield Record Bill Bogarts nineyear-old national record outdoor rubber power Wakefield models has broken byyoud never guessBob White Although Bob dropped two max flights out 80 competition July 1980 123 recent Nats Im sure what means know what Nats means means about what means us 1979 Nats produced 32-page slick-cover souvenir program wasnt just local meet pretentious title 33rd Nats have some perpetual trophies rival Mulvi hill heritage prestige Anyhow pleased present photos some modelers hardware India strikes oil watch out fellows next World Champs rWEVE EXPANOEI SCALt DRAWINGSPHOTOS BOOKLETS & A TECH NTERNAT ONA CATALOGS $20048500 C ENZ U _______________ VOA ORSOON 94US READY NOW AAmco Inc have issued three NEW R/C kits last two years best challenged anyone industry BIG-H QUIKRAY 500 very newest R/C kit X RAY AAmco issue new kit just sake putting out another kit new kits well planned Modeler also create sales Dealers Distributors because R/C kits own selling!! WHAT IS NEXT? WATCH MR GUS modelers industry has need kit like MR GUS very long time Lou Andrews AAmco guy company will issue RN during latter part 1979and two World Champshe has little opportunity crack record hard fly competition too occasion combined San Valeers California Eagles Annual Taft March 8 Thirteen straight maxes total score of57 minutes will probably stay books longer us will care Bol Meuser 4200 Gregory St Oakland CA 94619 RC ARROW/STUMPF continued page 63 firewall rear spinner balsa block fairs engine crutch spinner firewall firewall crutch block assembled epoxy Install firewall assembly four additional formers between fuselage sides add I5 sq stringer turtledeck cover fuselage top 3/32 sheet except canopy carved balsa block hollowed out approximately Vs thickness Now add Nyrod housings elevator throttle pushrods cover bottom fuselage 3/32 sheet Tail Surfaces tail surfaces made SEE YOUR LOCAL HOBBY DEALER send 25t catalog 34 span 020 power single channel tic orS1595 free flight ACUAKER FLASH FLYLINE MODELS INC 2820 DORA AVENUE B-Il FAIRFAX VIRGINIA 22031 703 573 2038 Rosies D&R Fbwer Pod Fits COX T- 0 & Med 049 051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon injection moulded Power 3 lb airplanes 5/ total weight 9 WE ALSO MAKE BANTAM Servos O&R Sticks Connectors Bulkhead Switch mounts TxSdsfety Switch duty gear Wwld widt u*omg 1ev D 8 R mI eshv fits pvo41cs 3501 -C W Moore St Santa Ana CA 92704 KIT S 9 HL GLIDERS 3 SATELLITE KITS 17 OLD TIME GAS Send 25 5 RUBBER 3 NORDIC 1980 catalog 9 COMPETITION GAS FUELand DTTIMERS-$1075each FAI Model Supply medium-hard balsa elevator halves joined 1/16 piano wire elevator uses continuous hinge made two -in wide strips iron-on covering material sure bevel trailing edge stabilizer before ironing hinge permit free move ment type hinge quite durable easily repaired Finish Trim Sand wood parts #200 sandpaper apply coat Coverite Balsarite product really helps covering stick Lightly sand foam wing remove mould flash irregularities wing ailerons covered red Solarfilm low temperature iron-on cover ing will fuselage tail covered white Econokote first time used product worked very well arrow fuselage sides 3/16 wide blue DJ Multistripe canopy outline / 16 black Multistripe canopy area painted silver An alternate finish think would look good US Air Force camouflage Radio Equipment Heathkit 8 channel trans mitter provides guidance Litco Micro Flight Pack Three micro servos control throttle ailerons elevator receiver 225-maH battery housed forward fuselage under fual tank reason advisable wrap plastic bags protec tion aileron servo mounted wing center elevator throttle servos installed fuselage Flying first flight August 21 1978 local test pilot Glenn Spacht Bob Aberle Ron Farkas author taking controls various occasions plenty time everyone since flight time 2-ounce tank 15 20 minutes Except two turns up elevator clevis no changes adjustments required later flights model has also flown MA columnists George Myers Nick Ziroli Straight Arrow has neutral stability maneuvers easily accomplished rolls inverted flight inside outside loops Cuban eights split-S hammer-head stalls etc landing keep approach speed fairly high go easy flair avoid ballooning Stalls pre ceeded wing droop easily avoided Although model definitely intended beginners tricky plane fly can fly Pacer similar iA pattern ship Straight Arrow will offer problems Flight charactertistics well summed up test pilot Glenn Spacht Similar Pacer better very precise FF SCALE/WARNER continued page 55 sheet tissue tube glue some dope thinner Neither very good source friendly advice help need Without local shop lose ways John OLeary writing Minne apolis Modeller relates following true anec dote About half dozen FF CL types assembled local hobby shop Friday before Christmas sharing holiday good tidings 124 Model Aviation two classics Flyline ITS HERE 11/2 Farman Moustique U Colors RED BLACK YELLOW ORANGE Write Free CUSTOM TUNED ENGINES COMPETITION CCESSORIES Special GY 014 X 60 solid lines $295 ppd Custom needle valves racing wheels quick fills fuel shut-offs rs detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 La guns Hills Calif 92653 Ph f7 14 830-5162 InesIoemounteauoX lUand MIBCOtttflrOtSIC includes muffler Neighbors noise conscious Ace sleeve throttle has almost no power loss improves speed climb rate
Edition: Model Aviation - 1980/07
Page Numbers: 52, 53, 121, 123, 124
DURATION Bob Meuser CORRECTION sort caption photo AD-IS engine April issue said production planned FF World Champs told 20 30 engines per year being manufactured scarcely qualifies production Whether remains true whether production rate has increased result Mario Roccas winning World Champs engine clear nevertheless engine available two versions according Rocca Normal AD- 15 available manu facturer Alberto DallOglio Via Gagliardotti 13 36100 Vicenza Italy $130 plus $5 postage Free-Flight Tuned AD-15 available Mario Rocca 44040 Rovereto Ferrarese Italy $170 plus $5 postage Inter national Postal Money Order simplest method payment FF-tuned version cludes testing spinner pressure fitting largesection flood-off fitting enlarged venturi Delivery 30 days Ribs Italian Style Italian free-fighters have 52 Model Aviation Jam Leuken won coveted ulsa ulue U0Dbers Trophy 1977 Nationals first big naet Hes consistent winner outdoor HI gliders ever since Meuser photo longstanding penchant what has become known egg-crate geodetic construc tion wing tail surfaces competition classes Alberto DallOglio won 1963 Power World Champs model having diagonal ribs 2-cm 078 centers since time FAI Power fliers have drifted toward sheet-balsa-covered surfaces engines have become increasingly powerful quest greater rigidity Perhaps however Mario Roccas win 1979 World Cham pionship FAI Power egg-crate model will cause modelers pay attention interesting effective form construction Actually geodetic construction misnomer Some time thirties words applied mis-appliedto describe type diagonal construction far different use model aviation too dont see egg crates dividers set bias lack anything bettera flimsy justifi cation bestwe seem stuck terms egg-crate part nomenclature comes way ribs sometimes notched half-way through manner oldfashioned cardboard egg crate dividers went out fashion quarter century ago two popular ways taking care problem ribs cross other waythe popularis notch rib half-way through egg crate style other leave rib intact cut other rib through its full depth latter scheme warpage resulting glue shrinkage mini mized ribs apt end up bit wiggly construction looks terribly difficult least time-consuming Rocca claims quite contrary can pop ribs place evening hes practicing doesnt seem appropriate present com Continued page 121 July 1980 53 Phillip Nakashima holds dads Tadpole A/i towline glider readyto launch good air comes through Tadpole 1980 N FFS Model Steve Shibuya checks engine run scaled-down Moonraker 290 sq wing Year award winner Meuser photo area /2A competition Meuser photo often see reports aeromodeling activity India indebted Prasanta Banerjee forthese pictures Indias 33rd Nats Junior Mridul Boses Wakefield model uses 2-piece fuselage left Forward section dural tube aft rolled balsa boom Aluminum spinner hides Montreal stop Prop 20 diameter 22 pitch placed 4th Open Rubber right Deepak Bhowmic Calcutta Model Aero Club winning Open Glider design Meanderer Model utilizes 90/0 thick flapped Baguley airfoil 8 X 96 wing Orange black finish Kustom Krartsmanship Box 2699 Lagana Hills CA 92653 Engines engine rework L Machine Service 5847 N 67th St Milwaukee WI 53218 Engine rework K & W Enterprises 7824 Lexington Ave Philadelphia PA 19152 Fiberglass props FF DURATION/MEUSER continued page 53 plete blow-by-blow account type con struction perhaps few tips will help What want to first lay ribs slanting way follow up laying ribs slanting other way glue shrinkage humidity changes virtually guaranteed end up warps proper way first lay symmetrical zigzag ribs follow zigzag displaced right followed another left forth until run out ribs way left-handed glue joints right-handed ones warping unlikely Ribs can pre-notched bookkeeping seems overwhelming keeping track ribs notched whether top bottom alternative simply notch go can virtually guarantee omit notch fact will make itself abundantly apparent will take appropriate action So sense system seems fail-safe leading edge trailing edge bunch ribs wing make spars too required again conceivably could notch ribs spars before assembly starts simpler way least bookkeeping view point spar notching after ribs place ribs could conceivably shaped final profiles before assembly again seems appropriate simply install ribs balsa rectangles sand shape after wards properly shaped sanding block sandpaper glued plus template two would worthwhile investment time Ribless construction revisited Dave Gibson came up interesting variation Look Ma no ribs theme few months back came up idea some time ago trying simplify model building younger set sketch tells story key idea standard-size strip-wood used 4c\A 40 RIO $4299 61 RIO $6750 span-wise members leading edge trailing edge spars top-surface spar doesnt stick up far enough just prop up degree required get airfoil section choice Several people have questioned torsional rigidity such structures Unless go 1CALE geodetic construction about 90% torsional rigidity wing ends up results stiffness imparted covering torsional resistance framework essentially nil no reason expect ribless con struction would better worse July 1980 121 5% $595 10% $795 15% $850 ZIPS 00000thru49999350 500001hru79999250 80000thru99999175 California150 PRICES SUBJECT TO CHANGE July 29-25 juillut Uttawa UMarlo CANADA / 4 4/ AIIM PAIN ca*gave Acres Ad SCALE 80 PX 80X 9284 AtTA VSTA POSTAL STN OTTAWAONTARIO CANADA KIG ST9 ElitE CUAUMUIEUI y ITTAWA AUTISM CAUM conventional construction regard torsional rigidity Geodetic cross-rib construction creases torsional rigidity structure immensely ribs full depth airfoil attempt increase torsional stiffness ribless construction setting non-ribs angle chord would fruitless non-ribs simply dont have enough rigidity bending vertical direction thats what takes geodetic construction work Torsional resistance structure often correlated warp resistance cover ing put reasonable uniformity doped adequately excessively torsionally weak structures warpage big problem Ed Lidgard reports some 40ye ar-old wings straight day built Id able report about some 40-year-old wings too hadnt some cats discovered wings made fine beds some 386 years ago India Nats little know about India us Backward countries what used call developing nations fashionable expression nowadays Both equally accurate inaccurate equally superficial Overpopulation too little food religious dogmas cultural traditions inhibit progress scarcity natural resources industrial value typical dog-chasing-tail situation midst bunch fellers get jollies needling engines gluing stick stick B running over countryside towing Nordic gliders breaking rubber motors much like ourselves Severe import restrictions force make far less accustomed doubt ifDallOglio will find customers AD-iS engine $175 per copy have organization roughly equivalent AMA called India Aeromodellers Association Its president Bijay Manzil has title Maharajadhiraja Bahadur Burdwan Pretty classy Ill bet dont have half dozen Maharajadhirajas entire AMA membership cant recall ever becoming AMA president economic situation prevents attending World Champs other international meets hear little about What little know free flight activities comes Prasanta Banerjee Nordic flier editor Calcuttan sometimes occasional newsletter mimeo graphed poor grade paper would happier roll bathroom Prasanta Jt Secretary Treasurer FIC fliers arise like use expressions such F lC scarcely anybody understands because nobody understands what write automatically become big shot friend flying WakefieldF lB isfor some five years asked what VIT meant being dead certain myself explained meant Very Important Thing seemed satisfied editor believes might vari able incidence tail RBM Anyhow seems hard ignore current World Champ FIC FAI Power event used fiberglass pool cue tailboom just about time went out fashion NFFS laid mill order rather excellent booms doubt two three have ever sold selling price based purchase price some five years ago makes quite bargain could run vibration problems glass booms probably wont keep tailfeathers light ought anyhow make excellent RC sailplane booms too 42 long 52 diameter small end 8 big end weigh 59 grams Cut out section suits plane fancy Cost $7 plus 50t extra Parcel Post $150 First Class per order Order Karen Thompson 2012 Landon Lane Sacramento CA 95825 NFFS Model Year awards 1980 A/2 Towline Glider Mike Fantham England Wakefield Itzach Ben-Itzach Israel FAI Power Doug Galbreath Power Gil Morris Toothpicks Large Power Models Mark Woodrey Outdoor Rubber Chet Lanzo historic still winning Lanzo Stick Outdoor HLG Zingaroo Paul Lagan Mike Elmore Gary Bowden New Zealand A/l Glider George Xenakis Tadpole Indoor Rubber Jim Richmond worldrecord Starwalker Indoor Hand-Launch Glider Stan Stoy Tn-Folder special awards John Tatone timers Bob Hunter Hot Stuff Carl Goldberg invention pop-up-stabilizer form dethermalizer Nominate Nominations open NFFS Model Year Awards 1981 misprint Responsibility administration awards has changed hands year year past has resulted frantic scramble end year get nominations now have same chairman selection committee two years row least things have changed time struck flash genius inclined recommend someone consideration award Gather information can about nominee send however much little have Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Nominations made during year will carried forward next Awards made outstanding models course also kookie things like OldTimer movement Peanut Scale movement Seelig timer Rossi engine model has never won darned thing nevertheless outstanding some respect New Wakefield Record Bill Bogarts nineyear-old national record outdoor rubber power Wakefield models has broken byyoud never guessBob White Although Bob dropped two max flights out 80 competition July 1980 123 recent Nats Im sure what means know what Nats means means about what means us 1979 Nats produced 32-page slick-cover souvenir program wasnt just local meet pretentious title 33rd Nats have some perpetual trophies rival Mulvi hill heritage prestige Anyhow pleased present photos some modelers hardware India strikes oil watch out fellows next World Champs rWEVE EXPANOEI SCALt DRAWINGSPHOTOS BOOKLETS & A TECH NTERNAT ONA CATALOGS $20048500 C ENZ U _______________ VOA ORSOON 94US READY NOW AAmco Inc have issued three NEW R/C kits last two years best challenged anyone industry BIG-H QUIKRAY 500 very newest R/C kit X RAY AAmco issue new kit just sake putting out another kit new kits well planned Modeler also create sales Dealers Distributors because R/C kits own selling!! WHAT IS NEXT? WATCH MR GUS modelers industry has need kit like MR GUS very long time Lou Andrews AAmco guy company will issue RN during latter part 1979and two World Champshe has little opportunity crack record hard fly competition too occasion combined San Valeers California Eagles Annual Taft March 8 Thirteen straight maxes total score of57 minutes will probably stay books longer us will care Bol Meuser 4200 Gregory St Oakland CA 94619 RC ARROW/STUMPF continued page 63 firewall rear spinner balsa block fairs engine crutch spinner firewall firewall crutch block assembled epoxy Install firewall assembly four additional formers between fuselage sides add I5 sq stringer turtledeck cover fuselage top 3/32 sheet except canopy carved balsa block hollowed out approximately Vs thickness Now add Nyrod housings elevator throttle pushrods cover bottom fuselage 3/32 sheet Tail Surfaces tail surfaces made SEE YOUR LOCAL HOBBY DEALER send 25t catalog 34 span 020 power single channel tic orS1595 free flight ACUAKER FLASH FLYLINE MODELS INC 2820 DORA AVENUE B-Il FAIRFAX VIRGINIA 22031 703 573 2038 Rosies D&R Fbwer Pod Fits COX T- 0 & Med 049 051 Engs Rubber Band Screw Mounting Eng mts upright Inverted Running time appx 4 mm Nylon injection moulded Power 3 lb airplanes 5/ total weight 9 WE ALSO MAKE BANTAM Servos O&R Sticks Connectors Bulkhead Switch mounts TxSdsfety Switch duty gear Wwld widt u*omg 1ev D 8 R mI eshv fits pvo41cs 3501 -C W Moore St Santa Ana CA 92704 KIT S 9 HL GLIDERS 3 SATELLITE KITS 17 OLD TIME GAS Send 25 5 RUBBER 3 NORDIC 1980 catalog 9 COMPETITION GAS FUELand DTTIMERS-$1075each FAI Model Supply medium-hard balsa elevator halves joined 1/16 piano wire elevator uses continuous hinge made two -in wide strips iron-on covering material sure bevel trailing edge stabilizer before ironing hinge permit free move ment type hinge quite durable easily repaired Finish Trim Sand wood parts #200 sandpaper apply coat Coverite Balsarite product really helps covering stick Lightly sand foam wing remove mould flash irregularities wing ailerons covered red Solarfilm low temperature iron-on cover ing will fuselage tail covered white Econokote first time used product worked very well arrow fuselage sides 3/16 wide blue DJ Multistripe canopy outline / 16 black Multistripe canopy area painted silver An alternate finish think would look good US Air Force camouflage Radio Equipment Heathkit 8 channel trans mitter provides guidance Litco Micro Flight Pack Three micro servos control throttle ailerons elevator receiver 225-maH battery housed forward fuselage under fual tank reason advisable wrap plastic bags protec tion aileron servo mounted wing center elevator throttle servos installed fuselage Flying first flight August 21 1978 local test pilot Glenn Spacht Bob Aberle Ron Farkas author taking controls various occasions plenty time everyone since flight time 2-ounce tank 15 20 minutes Except two turns up elevator clevis no changes adjustments required later flights model has also flown MA columnists George Myers Nick Ziroli Straight Arrow has neutral stability maneuvers easily accomplished rolls inverted flight inside outside loops Cuban eights split-S hammer-head stalls etc landing keep approach speed fairly high go easy flair avoid ballooning Stalls pre ceeded wing droop easily avoided Although model definitely intended beginners tricky plane fly can fly Pacer similar iA pattern ship Straight Arrow will offer problems Flight charactertistics well summed up test pilot Glenn Spacht Similar Pacer better very precise FF SCALE/WARNER continued page 55 sheet tissue tube glue some dope thinner Neither very good source friendly advice help need Without local shop lose ways John OLeary writing Minne apolis Modeller relates following true anec dote About half dozen FF CL types assembled local hobby shop Friday before Christmas sharing holiday good tidings 124 Model Aviation two classics Flyline ITS HERE 11/2 Farman Moustique U Colors RED BLACK YELLOW ORANGE Write Free CUSTOM TUNED ENGINES COMPETITION CCESSORIES Special GY 014 X 60 solid lines $295 ppd Custom needle valves racing wheels quick fills fuel shut-offs rs detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 La guns Hills Calif 92653 Ph f7 14 830-5162 InesIoemounteauoX lUand MIBCOtttflrOtSIC includes muffler Neighbors noise conscious Ace sleeve throttle has almost no power loss improves speed climb rate