Proudly displaying model flew World Championships author Don Chancey Much time effort goes development ship like thisfor example Chancey re-built wings five times obtain stiff light panel stand zoom launch flutter Designedby member US 1975 Nordic teamfor circle tow zoom launch glider incorporates latest practice flyperlon mkV THE HYPERION MK V devel oped 1975 World Championships Plovdiv Bulgaria model shown didnt just happen its present state model constantly changing due mostly because time come across new definitely better way doing something try incorporate ship Sometimes requires building new ship case Mark V wings re-built total five times before ended up pictured biggest problem wing structure building panel stiff enough still light enough zoom launch fluttering fly pretty tight hook setting hook starts moving 48 lbs unlatches almost 7 lbs tension model really has build up speed unlatch 7 lbs Another problem tail booms Fiber booms flex little too much super hard launches built up boom helps quite lot besides being lighter struc ture tail boom taken Ekhten hovs 1973 winner Its really stiff quite light built properly front end much deeper adds considerably side area Its pur pose help model stay straighter higher speeds acts like forward fin Three degrees seems about opti mum angle attack wing Models less dont seem go high have poor recovery Ships angle have good recoveries seem too loopy dont get high either exceptions course construction details follow way build ships people have special building techniques really doesnt matter what technique used build model models important thing turn out correctly personal techniques work better use Construction Before beginning actual construction wing two items con sider absolute must good ship first airfoil sanding block Cut block wood slightly wider wing chord Cut top block match bot tom camber airfoil bottom block match top camber airfoil glue 320 sandpaper block Using method wing very consistent airfoil may produced has always opinion con stant airfoil tip tip much important trying get exact G F6 B6356B etc naturally get close possible second item preparation jig construction modern high-perform ance under-cambered wings can con siderably simplified speeded up using curved form wing jig initial stages construction no need pack up leading trailing edges traditional way much time can thus saved Later because entire under surface wing panel supported much holding pressure can ap plied ribs collapsing splitting shaping leading trailing edges insertion top spars becomes much easier fact whole process building wing panel appears much easier because undercamber support not-so-skillful less ex perienced modeler can attempt construc tion formerly would consider too difficult Generally wing warps may built wing panels limited degree resorting packing after would defeat main advan tages wing jig Wing jigs also very useful repairs rebuilds damaged flying surfaces necessary because big heavy standard building board could taken flying field on-the-spot repairs sometimes necessary during contest recent years 44 Model Aviation advent quick-drying epoxies com plicated field repairs possible jig will certainly prove beneficial model box lid Construction Wing Jig ero Modeller Draw airfoil full size accurately possible Using undercamber por tion carefully draw tangents leading trailing edges smooth continuous line produced extend t rear airfoil width baseboard deter mined length baseboard such accommodate longest length wing panel likely assembled over jig Something around 30 normal Having determined dimensions base board must now cut size k board clipboard similar make sure whatever material used perfectly flat Using set square mark off locations ribs allowing uniform spacing about 2 2 between ribs mark locations webbing Care fully make plywood rib template make sufficient ribs balsa sheet cut out pin together sand ensure have identical profile Epoxy ribs baseboard marked off locations next stage epoxy place webs made 1/4 medium balsa sheet located leading trailing edges inter mediates along chord give about 2 2 gaps Make webs slightly over size vertical direction epoxy set plane sand cor rect camber flush ribs Next cut piece 1/16 thick plywood slightly oversize fit over top assembled structure Cover structure contact cement attach ply wood top using rubber strips weights hold down until epoxy sets dry remove rubber strip weights trim plywood size Finally give jig four five coats dope rubbing down between coat 600 grade wet dry paper complete two three coats car floor wax polish Wing Make plywood center ribs first making sure exactly same holes line up Spar notch es cut before assembly plywood ribs Next cut main ribs center panels 8-10 lb C-grain 1/16 sheet Cut main ribs tips slightly lighter material Select good hard piece balsa portion trailing edge epoxy spruce portion spruce cap rear IE absolute necessity thin airfoils today shaping notch TE before assembly Pin LE TE bottom sheeting place jig Position plywood root ribs tack place epoxy Note best results come building center panels end end Tubing cut two after complete assembly wing Now glue main ribs allow dry Using straight edge mark cut notches top spars Install top spars sheeting etc Allow dry still jig After thoroughly dry remove wing jig same bottom Next add webbing spars remainder sheeting cross ribs cross ribs cut slightly oversize sanded shape after assembly airfoil block tips can now assembled jig leading edges straight Due taper airfoiled jig will automatically build required amount wash out Dihedral angles may sanded /4 top ribs propping wing up desired angle sanding flat sanding block band launch glider style Finish sanding entire wing 400A sandpaper point apply total five coats 60-40 dope entire struc ture serves dual purpose First insures tissue will stick part structure touches sec ondly especially helpful weatherproofing wood Models done way will last several years flying Allow structure dry thoroughly cover Japanese tissue Monokote does give proper rigidity required zoom launching plus fact just too slick slick surface definitely hurts glide Bob White using flatner dope roughen up flying surfaces obvi ously successful attempt make air stick airfoils better bottom center panels should double-covered help cut down punctures Note dont remember seeing single airplane World Champs Monokoted thats 3 events Apply several coats dope allow dry thoroughly Add March1976 45 rear end showing built-up fin rudder stabilizer popped-up position Nordic A-2 models hard get Out strong lift hence severe pop-up angles Photo taken during launching Note line attached right wrist mono filament hangs free lies ground Al tangle free Tricks trade NO OCR TEXT turbulators set up cure finish rest model Stab Rudder Carefully select wood rudder/fin stabilizer Lightness virtue dont build too flimsy hear talk 7- 10-gram stabs people just turn green envy stab light just necessary 1975 World Champions stab weighs al 12 grams recommend building substantial stab 10 12 grams can make up extra weight elsewhere tail end built-up rudder can save 2 grams built properly wood rudders stripped sheet Use 4-lb stock possible After construction coat entire rudder Hot- Stuff will yield rudder extremely light yet very tough Coat framework rudder stab three thin coats clear dope cover Japanese tissue About three coats dope over tissue fine Set aside allow cure Fuselage want build all-out serious model have access materials making large diameter fiber glass tube built-up balsa spruce tail boom best way go can built much easier rolled balsa tube ones built turned out extremely stiff much fiber boom built-up booms stiffer also 4 6 grams lighter comparable length fiber tube Cut sides tail boom stiff light 3/32 sheet use C grain cause thats what use almost everywhere Make sure both sides match exactly Sand sides taper 3/32 thick front 1/32 extreme rear Pin two sides flat board add square blocks geodetic bracing avoid excess pulling especially excess weight glue build-up entire aft end ships rear wing back built Hot-Stuff Build-up tail boom separate unit After front end constructed certain stage boom just plugged place epoxied sure make provisions braided steel auto-rudder cable front end fuselage relatively simple Using template shown cut out main keel ood sides 1/16 plywood Two /s ribs epox ied add support wing wires use K&B microballoons 5-minute epoxy fill around two /8 ribs make other fillets use Cerrabend ballast because weighs almost twice much lead has much lower melting point can obtained larger model train shops use ballast model trains need lot weight small area finish fuselages follows Apply two three coats clear dope boom cover Japanese tissue tissue gets three coats clear dope front end gets three coats lacquer sanding sealer tail boom forward Allow dry thoroughly sand flat 320 400 sandpaper lacquer seal er very easy work yields ex tremely smooth surface paint over use white spray lacquer color dries quickly especially easy work Much white epoxy used past Allow lacquer dry thoroughly Hook up auto-rudder DT lines install timer tow hook etc Flying Make few test glides insure CG incidence close Re member will need approximately 3/32 up tail due turbu lator strips wing new circle towing good way start off make first few flights tow hook unlatched Simply tow model top notice what rudder adjustments should made produce straight tow After model towing straight due wash-in right wing certain amount left rudder may required produce straight tow dont worry normal Set latch attempt circle model Due excess drag tow line rudder setting approximately 250 required turn model presently am using Russian towing method ie 50-lb test monofilament no tow reel Slack line taken up reeling line hand-over-hand using hand-over-hand method model can also pulled quickly top set up circle setting up circle pull model over head slight ly over front Pull nose down let go model will stall quickly turn about turn should tight possible spinning spiralling down lift encountered Always sure have enough slack line turn can made tension line will need con tinned page 95 / grace soaring birds found Nordic flight Dons hook starts moving 48 lbs pressure releases 7 lbs tension March 1976 47 Front end Hyperion showing neat stallation Czech tow hook Sellig timer Hardware Jim Crockett columns Hyperion Mk Vby Bob Meuser include such sources under head Bob Uguccioni mailed news releases area newspapers well publishing event week ly booklet distributed throughout entire resort area RCers Aeroguidance Society Endicott New York pylon racing group Harrisburg agreed help us show Everything geared October 18 1975 100 pm As luck would have time year rain Frantic calls regional flight service Wilkes Barre 700 morning re assuringrain entire day prepara tions cancelled flying guests out town called food refrigerated frozen new advertising campaign started regear rain date October 25 1975 Advertisements ran local paper during rain-date week stating Red Baron caught cold pre paring fight Snoopy recovered battle Thursday rain-date week rain date being Oc tober 25 1975 everything set weather forecast good weekend luck would have forecast changed Friday evening plagued fine mist during early Saturday morning hours Again called flight service station Wilkes Barre report called rising ceiling no rain cells area Winds light variable early morn ing fog drizzle should cleared noon plowed ahead prepared show eating area moved inside rain-soaked cooks prepared hotdogs hamburgers charcoal hearths PA system set up hangar away flying area announcer Duane Walck could see comment aerial maneu vers rock group Reign also set up inside hangar protect electronic gear As 100 pm neared people helping preparation performance show present Joel Samuelson president Po cono Modelers Chairman Air Show paced back forth hoping break weather Surprisingly people started trickle in light rain 130 started show ap proximately 150 200 spectators rain didnt clear until 300 afternoon Don Hewlings opened show flying Bristol Bullet over strip dropping official bicentennial flag followed RCjamboree R C Noll took off biplane pulling banner saying Wel come RC Fans show underway weather showing no signs clearing People would have come children stayed home lot honeymooners presume decided stay indoors due inclement weather R C Noll continued show flying Jet Star deBolt Acrobat Findecker Ralph Jackson turned spectacular scale flight YAT-28E also flew pattern Tiger Tail Dick Allen sliced through mist Tiger Tail Taube Sopwith Camel Pup Hank Farrell did snap rolls original biplane way should pub lished Model Aviation shortly Gary Booker flew deHavilland 10-F During ribbon cutting part show Don Hewlings clevis break turn spiraled totalling plane brave wet kids show thought greatest wanted Don repeat per formance glider portion show performed Tom Long flying Monterey Doug Williams flying Hobie Hawk Sterling Schoonover flew pattern Phoenix 6 also test flew Ugly Stik part aerial dog fight Because mechanical problems Ugly Stik decided use ship dog fight Allen Conklin flew eight-foot Aeronca Carl Stengel darted through sky 200 Quickie racer Tom Lilli flew original pattern Sweet Stik times planes seemed disap pear clouds Control-line performances ade quately handled Jim Bush flying stunt pattern Ken Sarer performed brilliantly carrier demonstration Cliff Hunt flew original adaptation gyrocopter As can see entire show devoted World War planes ever respectable number beautifully designed detailed scale planes added extra touch World War theme besides aerial dogfight between Red Baron Snoopy pylon racing teams control-line combat teams never did show because inclement weather During intermission live music provided Reign real hot rock group Poconos Door prizes donated various merchants given lucky people correct number grand prizes two vacations two Birchwood drawn before main event main event announced theme song Red Baron Snoopy piped through PA system Snoopy took off flying gracefully air yell ing taunts mean Red Baron Red Baron never did get air until Snoopy almost out gas Baron engine trouble Snoopy won default tremendous success first effort large part ex pected crowds never came because poor weather did come en joyed afternoon Free Delta Darts balloons given children people walked away valuable door prizes well greater apprecia tion what airplane modeling about clubs looking forward next year bigger better air show plan hold earlier year because weather goes well will making national event guaranteed prize money Poconos wonder ful place hold such large show Red Baron Birchwood looking forward revenge flight Hyperion/Cha ncey inntiniw4 aae 47 practice will automatically know much slack line required complete turn will need learn pull tension proper point cir cle build up speed launch etc Because stretchiness monoMarch1976 95 Rain Show/Samuelson continued page 37 Hyperion continued FULL-SIZE PLANS No 133 No 134 No 135 No 131 Gee Bee Model V 40-powered RC stand-off scale great old-time racers No 132 SwissWW II Fighter 45-inch CL scale-type sport model 29s 35s Jumbo Scale Douglas 0-38 large-size rubber-scale model biplane excellent duration Callisto superb Standard Class RC sailplane also took Nats first Hyperion Mk V Don Chanceys classic Nordic A-2 competed US team $500 $650 $600 $400 $275 Hinnents F-5 ultimate maneuverability smoothness 80 Pattern iob has all $450 Short Seamew 40-powered class i carrier model good prototype lends itself innovations $300 French Wench Free Flight classes 1/2A 049 051 fully tested design $225 Kioud King 15- 19 RC Old-Timer Free Flight based upon 1938 record breaker FF $400 Wiley Post Biplane Ntite durable scale design either rubber tail wagger Ipulse rudderlS225 Harold Ruarks Sportsman RC cabin iob pretty smooth lines 40 powered full-house $450 Vought Kingfisher semi-scale fully stuntable CL model Les King 25 35 engines1S450 Aeronca K 24 wingspan rubber Indoor Scale old-time lightplane Its done 90 seconds $200 Electric couldnt done Dick Sarpolus Astro 25 RC lob performs pattern $375 Bill Fuoris Quarter Midget House Balsa design modifications faster times $300 Zipper latest CL Scale Racers John Kilsdonk lob must racing fans $175 Max-a-Million fleet free flights problem good A/B FAI $375 5neat Sport RC glider simple lob can flown engine $275 Cessna 150 Acrobat Step up Half-A CL iobs 09-powered semi-profile easy build $275 Ernie Violetts OH Comet CL Scale 1974 Nats first-place winner classic twin $900 Niris An AC pattern mb takes advantage best existing criteria $400 Electra-Lit Hal Covers contest-type free flight VTOsHytork electric motor $150 Novice simple beginners A-i Nordic constructed entirely sheet balsa $150 GollyGeeWhiz Dan Rutherfords simple Half-A powered Combat iob turns dime $150 Four Beginners Too basic RC trainer 09 1 5s rudder elevator motor controls $300 Cathexis Dave Parsons FAI FF has auto-elevator rudder prop brake $450 Gremlin Sturdy acrobatic RC biplane flies well 35s up 60s $300 Hot Wood Twice Nats winner Rocket all-balsa Jetes-powered iob $100 4-Bits 40-powered RC 500 Club Racer has winning ways Good sport too $400 Semi-Pro Contest-winning HL glider has pop-up tail dethermalizer $100 HeIf-Korda rubber John Oldenkamps 1/2-size all-balsa Old-Timer $175 Hooptee MK Ill John Kiladonks CL Rat Racer involves latest state-of-the-art $175 SAC Drone Astro-lO electric-powered 80 scale AC powered glider $400 Komet CL 1/2-A profile semi-scale profile fun flying Mouse Race $200 Rebel Update famed deBolt RC kit Rudder/Elevator/Enginefor 15s $275 Altair Class A-B Free Flight conversion data other classes $400 -- le numbers plans wish order STATE 101 107 113 119 125 131 102 108 114 120 126 132 103 109 115 121 127 133 104 110 116 122 128 134 105 111 117 123 129 135 ZIP Price includes first-class postage Send check money order payable Model Aviation AMA 806 Fifteenth St. NW. Washington DC 20005 filament model can tugged pulled prematurely unlatching hook same hook tension can flown conditions Starts moving 48 lbs unlatches almost 7 lbs stretchy line makes thermal flying much better non-stretch line should used calm no-lift situations Conditions should compensated changing towline re-adjusting tension towhook real reason accidentally coming unlatched lack practice wont try explain details circle towing Most wont make lot sense anyway until youve tried have questions feel free ask Best luck model remember absolutely no substitute practice Practice until towing second nature thing should have worry about line finding thermal WANTED ideas happenings hints/kinks howto sketches photos news etc Send colum nist category concernedat address shown column photo idea printed Model Aviation will pay $5 contributor ADVERTISERS INDEX Ace Radio Control Inc77 Aldrich Products Inc82 Americas Hobby Center Inc86 Andrews Aircraft Model Co84 Bantam Precision Products Inc Cleveland Model & Supply Co80 Coverite81 Dept Transportation FAA94 Du-Bro Products Inc85 EK-logictrol93 Fox Manufacturing Co91 Carl Goldberg Models3 Grish Brothers77 G-S Products Corp Intl89 Paul K Guillow Inc83 Hobby Hideaway83 JASCO89 Kraft Great Lakes Inc80 K&S Engineering82 Midwest Products91 Models West Inc88 Peck-Polymers90 Polks Hobbies85 Progress Mfg Company84 Satellite City95 Semco Model Engineering78 Sig Mfg Company1 Sterling Models Inc90 Sullivan Products Inc86 Tom Sutor Trophies80 Top Flite11 VI Products81 Weak Signals R/C Club92 Westport International Inc87 Williams Brothers87 World EnginesBack Cover 96 Model Aviation No100 No101 No102 No103 No 104 No105 No 106 No107 No 108 No109 No110 No 111 No112 No 113 No114 No115 No116 No 117 No118 No119 No120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 No 128 No 129 No 130 100 106 112 118 124 130 Please print carefully NIAMF STREET CITY
Edition: Model Aviation - 1976/03
Page Numbers: 44, 45, 46, 47, 95, 96
Proudly displaying model flew World Championships author Don Chancey Much time effort goes development ship like thisfor example Chancey re-built wings five times obtain stiff light panel stand zoom launch flutter Designedby member US 1975 Nordic teamfor circle tow zoom launch glider incorporates latest practice flyperlon mkV THE HYPERION MK V devel oped 1975 World Championships Plovdiv Bulgaria model shown didnt just happen its present state model constantly changing due mostly because time come across new definitely better way doing something try incorporate ship Sometimes requires building new ship case Mark V wings re-built total five times before ended up pictured biggest problem wing structure building panel stiff enough still light enough zoom launch fluttering fly pretty tight hook setting hook starts moving 48 lbs unlatches almost 7 lbs tension model really has build up speed unlatch 7 lbs Another problem tail booms Fiber booms flex little too much super hard launches built up boom helps quite lot besides being lighter struc ture tail boom taken Ekhten hovs 1973 winner Its really stiff quite light built properly front end much deeper adds considerably side area Its pur pose help model stay straighter higher speeds acts like forward fin Three degrees seems about opti mum angle attack wing Models less dont seem go high have poor recovery Ships angle have good recoveries seem too loopy dont get high either exceptions course construction details follow way build ships people have special building techniques really doesnt matter what technique used build model models important thing turn out correctly personal techniques work better use Construction Before beginning actual construction wing two items con sider absolute must good ship first airfoil sanding block Cut block wood slightly wider wing chord Cut top block match bot tom camber airfoil bottom block match top camber airfoil glue 320 sandpaper block Using method wing very consistent airfoil may produced has always opinion con stant airfoil tip tip much important trying get exact G F6 B6356B etc naturally get close possible second item preparation jig construction modern high-perform ance under-cambered wings can con siderably simplified speeded up using curved form wing jig initial stages construction no need pack up leading trailing edges traditional way much time can thus saved Later because entire under surface wing panel supported much holding pressure can ap plied ribs collapsing splitting shaping leading trailing edges insertion top spars becomes much easier fact whole process building wing panel appears much easier because undercamber support not-so-skillful less ex perienced modeler can attempt construc tion formerly would consider too difficult Generally wing warps may built wing panels limited degree resorting packing after would defeat main advan tages wing jig Wing jigs also very useful repairs rebuilds damaged flying surfaces necessary because big heavy standard building board could taken flying field on-the-spot repairs sometimes necessary during contest recent years 44 Model Aviation advent quick-drying epoxies com plicated field repairs possible jig will certainly prove beneficial model box lid Construction Wing Jig ero Modeller Draw airfoil full size accurately possible Using undercamber por tion carefully draw tangents leading trailing edges smooth continuous line produced extend t rear airfoil width baseboard deter mined length baseboard such accommodate longest length wing panel likely assembled over jig Something around 30 normal Having determined dimensions base board must now cut size k board clipboard similar make sure whatever material used perfectly flat Using set square mark off locations ribs allowing uniform spacing about 2 2 between ribs mark locations webbing Care fully make plywood rib template make sufficient ribs balsa sheet cut out pin together sand ensure have identical profile Epoxy ribs baseboard marked off locations next stage epoxy place webs made 1/4 medium balsa sheet located leading trailing edges inter mediates along chord give about 2 2 gaps Make webs slightly over size vertical direction epoxy set plane sand cor rect camber flush ribs Next cut piece 1/16 thick plywood slightly oversize fit over top assembled structure Cover structure contact cement attach ply wood top using rubber strips weights hold down until epoxy sets dry remove rubber strip weights trim plywood size Finally give jig four five coats dope rubbing down between coat 600 grade wet dry paper complete two three coats car floor wax polish Wing Make plywood center ribs first making sure exactly same holes line up Spar notch es cut before assembly plywood ribs Next cut main ribs center panels 8-10 lb C-grain 1/16 sheet Cut main ribs tips slightly lighter material Select good hard piece balsa portion trailing edge epoxy spruce portion spruce cap rear IE absolute necessity thin airfoils today shaping notch TE before assembly Pin LE TE bottom sheeting place jig Position plywood root ribs tack place epoxy Note best results come building center panels end end Tubing cut two after complete assembly wing Now glue main ribs allow dry Using straight edge mark cut notches top spars Install top spars sheeting etc Allow dry still jig After thoroughly dry remove wing jig same bottom Next add webbing spars remainder sheeting cross ribs cross ribs cut slightly oversize sanded shape after assembly airfoil block tips can now assembled jig leading edges straight Due taper airfoiled jig will automatically build required amount wash out Dihedral angles may sanded /4 top ribs propping wing up desired angle sanding flat sanding block band launch glider style Finish sanding entire wing 400A sandpaper point apply total five coats 60-40 dope entire struc ture serves dual purpose First insures tissue will stick part structure touches sec ondly especially helpful weatherproofing wood Models done way will last several years flying Allow structure dry thoroughly cover Japanese tissue Monokote does give proper rigidity required zoom launching plus fact just too slick slick surface definitely hurts glide Bob White using flatner dope roughen up flying surfaces obvi ously successful attempt make air stick airfoils better bottom center panels should double-covered help cut down punctures Note dont remember seeing single airplane World Champs Monokoted thats 3 events Apply several coats dope allow dry thoroughly Add March1976 45 rear end showing built-up fin rudder stabilizer popped-up position Nordic A-2 models hard get Out strong lift hence severe pop-up angles Photo taken during launching Note line attached right wrist mono filament hangs free lies ground Al tangle free Tricks trade NO OCR TEXT turbulators set up cure finish rest model Stab Rudder Carefully select wood rudder/fin stabilizer Lightness virtue dont build too flimsy hear talk 7- 10-gram stabs people just turn green envy stab light just necessary 1975 World Champions stab weighs al 12 grams recommend building substantial stab 10 12 grams can make up extra weight elsewhere tail end built-up rudder can save 2 grams built properly wood rudders stripped sheet Use 4-lb stock possible After construction coat entire rudder Hot- Stuff will yield rudder extremely light yet very tough Coat framework rudder stab three thin coats clear dope cover Japanese tissue About three coats dope over tissue fine Set aside allow cure Fuselage want build all-out serious model have access materials making large diameter fiber glass tube built-up balsa spruce tail boom best way go can built much easier rolled balsa tube ones built turned out extremely stiff much fiber boom built-up booms stiffer also 4 6 grams lighter comparable length fiber tube Cut sides tail boom stiff light 3/32 sheet use C grain cause thats what use almost everywhere Make sure both sides match exactly Sand sides taper 3/32 thick front 1/32 extreme rear Pin two sides flat board add square blocks geodetic bracing avoid excess pulling especially excess weight glue build-up entire aft end ships rear wing back built Hot-Stuff Build-up tail boom separate unit After front end constructed certain stage boom just plugged place epoxied sure make provisions braided steel auto-rudder cable front end fuselage relatively simple Using template shown cut out main keel ood sides 1/16 plywood Two /s ribs epox ied add support wing wires use K&B microballoons 5-minute epoxy fill around two /8 ribs make other fillets use Cerrabend ballast because weighs almost twice much lead has much lower melting point can obtained larger model train shops use ballast model trains need lot weight small area finish fuselages follows Apply two three coats clear dope boom cover Japanese tissue tissue gets three coats clear dope front end gets three coats lacquer sanding sealer tail boom forward Allow dry thoroughly sand flat 320 400 sandpaper lacquer seal er very easy work yields ex tremely smooth surface paint over use white spray lacquer color dries quickly especially easy work Much white epoxy used past Allow lacquer dry thoroughly Hook up auto-rudder DT lines install timer tow hook etc Flying Make few test glides insure CG incidence close Re member will need approximately 3/32 up tail due turbu lator strips wing new circle towing good way start off make first few flights tow hook unlatched Simply tow model top notice what rudder adjustments should made produce straight tow After model towing straight due wash-in right wing certain amount left rudder may required produce straight tow dont worry normal Set latch attempt circle model Due excess drag tow line rudder setting approximately 250 required turn model presently am using Russian towing method ie 50-lb test monofilament no tow reel Slack line taken up reeling line hand-over-hand using hand-over-hand method model can also pulled quickly top set up circle setting up circle pull model over head slight ly over front Pull nose down let go model will stall quickly turn about turn should tight possible spinning spiralling down lift encountered Always sure have enough slack line turn can made tension line will need con tinned page 95 / grace soaring birds found Nordic flight Dons hook starts moving 48 lbs pressure releases 7 lbs tension March 1976 47 Front end Hyperion showing neat stallation Czech tow hook Sellig timer Hardware Jim Crockett columns Hyperion Mk Vby Bob Meuser include such sources under head Bob Uguccioni mailed news releases area newspapers well publishing event week ly booklet distributed throughout entire resort area RCers Aeroguidance Society Endicott New York pylon racing group Harrisburg agreed help us show Everything geared October 18 1975 100 pm As luck would have time year rain Frantic calls regional flight service Wilkes Barre 700 morning re assuringrain entire day prepara tions cancelled flying guests out town called food refrigerated frozen new advertising campaign started regear rain date October 25 1975 Advertisements ran local paper during rain-date week stating Red Baron caught cold pre paring fight Snoopy recovered battle Thursday rain-date week rain date being Oc tober 25 1975 everything set weather forecast good weekend luck would have forecast changed Friday evening plagued fine mist during early Saturday morning hours Again called flight service station Wilkes Barre report called rising ceiling no rain cells area Winds light variable early morn ing fog drizzle should cleared noon plowed ahead prepared show eating area moved inside rain-soaked cooks prepared hotdogs hamburgers charcoal hearths PA system set up hangar away flying area announcer Duane Walck could see comment aerial maneu vers rock group Reign also set up inside hangar protect electronic gear As 100 pm neared people helping preparation performance show present Joel Samuelson president Po cono Modelers Chairman Air Show paced back forth hoping break weather Surprisingly people started trickle in light rain 130 started show ap proximately 150 200 spectators rain didnt clear until 300 afternoon Don Hewlings opened show flying Bristol Bullet over strip dropping official bicentennial flag followed RCjamboree R C Noll took off biplane pulling banner saying Wel come RC Fans show underway weather showing no signs clearing People would have come children stayed home lot honeymooners presume decided stay indoors due inclement weather R C Noll continued show flying Jet Star deBolt Acrobat Findecker Ralph Jackson turned spectacular scale flight YAT-28E also flew pattern Tiger Tail Dick Allen sliced through mist Tiger Tail Taube Sopwith Camel Pup Hank Farrell did snap rolls original biplane way should pub lished Model Aviation shortly Gary Booker flew deHavilland 10-F During ribbon cutting part show Don Hewlings clevis break turn spiraled totalling plane brave wet kids show thought greatest wanted Don repeat per formance glider portion show performed Tom Long flying Monterey Doug Williams flying Hobie Hawk Sterling Schoonover flew pattern Phoenix 6 also test flew Ugly Stik part aerial dog fight Because mechanical problems Ugly Stik decided use ship dog fight Allen Conklin flew eight-foot Aeronca Carl Stengel darted through sky 200 Quickie racer Tom Lilli flew original pattern Sweet Stik times planes seemed disap pear clouds Control-line performances ade quately handled Jim Bush flying stunt pattern Ken Sarer performed brilliantly carrier demonstration Cliff Hunt flew original adaptation gyrocopter As can see entire show devoted World War planes ever respectable number beautifully designed detailed scale planes added extra touch World War theme besides aerial dogfight between Red Baron Snoopy pylon racing teams control-line combat teams never did show because inclement weather During intermission live music provided Reign real hot rock group Poconos Door prizes donated various merchants given lucky people correct number grand prizes two vacations two Birchwood drawn before main event main event announced theme song Red Baron Snoopy piped through PA system Snoopy took off flying gracefully air yell ing taunts mean Red Baron Red Baron never did get air until Snoopy almost out gas Baron engine trouble Snoopy won default tremendous success first effort large part ex pected crowds never came because poor weather did come en joyed afternoon Free Delta Darts balloons given children people walked away valuable door prizes well greater apprecia tion what airplane modeling about clubs looking forward next year bigger better air show plan hold earlier year because weather goes well will making national event guaranteed prize money Poconos wonder ful place hold such large show Red Baron Birchwood looking forward revenge flight Hyperion/Cha ncey inntiniw4 aae 47 practice will automatically know much slack line required complete turn will need learn pull tension proper point cir cle build up speed launch etc Because stretchiness monoMarch1976 95 Rain Show/Samuelson continued page 37 Hyperion continued FULL-SIZE PLANS No 133 No 134 No 135 No 131 Gee Bee Model V 40-powered RC stand-off scale great old-time racers No 132 SwissWW II Fighter 45-inch CL scale-type sport model 29s 35s Jumbo Scale Douglas 0-38 large-size rubber-scale model biplane excellent duration Callisto superb Standard Class RC sailplane also took Nats first Hyperion Mk V Don Chanceys classic Nordic A-2 competed US team $500 $650 $600 $400 $275 Hinnents F-5 ultimate maneuverability smoothness 80 Pattern iob has all $450 Short Seamew 40-powered class i carrier model good prototype lends itself innovations $300 French Wench Free Flight classes 1/2A 049 051 fully tested design $225 Kioud King 15- 19 RC Old-Timer Free Flight based upon 1938 record breaker FF $400 Wiley Post Biplane Ntite durable scale design either rubber tail wagger Ipulse rudderlS225 Harold Ruarks Sportsman RC cabin iob pretty smooth lines 40 powered full-house $450 Vought Kingfisher semi-scale fully stuntable CL model Les King 25 35 engines1S450 Aeronca K 24 wingspan rubber Indoor Scale old-time lightplane Its done 90 seconds $200 Electric couldnt done Dick Sarpolus Astro 25 RC lob performs pattern $375 Bill Fuoris Quarter Midget House Balsa design modifications faster times $300 Zipper latest CL Scale Racers John Kilsdonk lob must racing fans $175 Max-a-Million fleet free flights problem good A/B FAI $375 5neat Sport RC glider simple lob can flown engine $275 Cessna 150 Acrobat Step up Half-A CL iobs 09-powered semi-profile easy build $275 Ernie Violetts OH Comet CL Scale 1974 Nats first-place winner classic twin $900 Niris An AC pattern mb takes advantage best existing criteria $400 Electra-Lit Hal Covers contest-type free flight VTOsHytork electric motor $150 Novice simple beginners A-i Nordic constructed entirely sheet balsa $150 GollyGeeWhiz Dan Rutherfords simple Half-A powered Combat iob turns dime $150 Four Beginners Too basic RC trainer 09 1 5s rudder elevator motor controls $300 Cathexis Dave Parsons FAI FF has auto-elevator rudder prop brake $450 Gremlin Sturdy acrobatic RC biplane flies well 35s up 60s $300 Hot Wood Twice Nats winner Rocket all-balsa Jetes-powered iob $100 4-Bits 40-powered RC 500 Club Racer has winning ways Good sport too $400 Semi-Pro Contest-winning HL glider has pop-up tail dethermalizer $100 HeIf-Korda rubber John Oldenkamps 1/2-size all-balsa Old-Timer $175 Hooptee MK Ill John Kiladonks CL Rat Racer involves latest state-of-the-art $175 SAC Drone Astro-lO electric-powered 80 scale AC powered glider $400 Komet CL 1/2-A profile semi-scale profile fun flying Mouse Race $200 Rebel Update famed deBolt RC kit Rudder/Elevator/Enginefor 15s $275 Altair Class A-B Free Flight conversion data other classes $400 -- le numbers plans wish order STATE 101 107 113 119 125 131 102 108 114 120 126 132 103 109 115 121 127 133 104 110 116 122 128 134 105 111 117 123 129 135 ZIP Price includes first-class postage Send check money order payable Model Aviation AMA 806 Fifteenth St. NW. Washington DC 20005 filament model can tugged pulled prematurely unlatching hook same hook tension can flown conditions Starts moving 48 lbs unlatches almost 7 lbs stretchy line makes thermal flying much better non-stretch line should used calm no-lift situations Conditions should compensated changing towline re-adjusting tension towhook real reason accidentally coming unlatched lack practice wont try explain details circle towing Most wont make lot sense anyway until youve tried have questions feel free ask Best luck model remember absolutely no substitute practice Practice until towing second nature thing should have worry about line finding thermal WANTED ideas happenings hints/kinks howto sketches photos news etc Send colum nist category concernedat address shown column photo idea printed Model Aviation will pay $5 contributor ADVERTISERS INDEX Ace Radio Control Inc77 Aldrich Products Inc82 Americas Hobby Center Inc86 Andrews Aircraft Model Co84 Bantam Precision Products Inc Cleveland Model & Supply Co80 Coverite81 Dept Transportation FAA94 Du-Bro Products Inc85 EK-logictrol93 Fox Manufacturing Co91 Carl Goldberg Models3 Grish Brothers77 G-S Products Corp Intl89 Paul K Guillow Inc83 Hobby Hideaway83 JASCO89 Kraft Great Lakes Inc80 K&S Engineering82 Midwest Products91 Models West Inc88 Peck-Polymers90 Polks Hobbies85 Progress Mfg Company84 Satellite City95 Semco Model Engineering78 Sig Mfg Company1 Sterling Models Inc90 Sullivan Products Inc86 Tom Sutor Trophies80 Top Flite11 VI Products81 Weak Signals R/C Club92 Westport International Inc87 Williams Brothers87 World EnginesBack Cover 96 Model Aviation No100 No101 No102 No103 No 104 No105 No 106 No107 No 108 No109 No110 No 111 No112 No 113 No114 No115 No116 No 117 No118 No119 No120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 No 128 No 129 No 130 100 106 112 118 124 130 Please print carefully NIAMF STREET CITY
Edition: Model Aviation - 1976/03
Page Numbers: 44, 45, 46, 47, 95, 96
Proudly displaying model flew World Championships author Don Chancey Much time effort goes development ship like thisfor example Chancey re-built wings five times obtain stiff light panel stand zoom launch flutter Designedby member US 1975 Nordic teamfor circle tow zoom launch glider incorporates latest practice flyperlon mkV THE HYPERION MK V devel oped 1975 World Championships Plovdiv Bulgaria model shown didnt just happen its present state model constantly changing due mostly because time come across new definitely better way doing something try incorporate ship Sometimes requires building new ship case Mark V wings re-built total five times before ended up pictured biggest problem wing structure building panel stiff enough still light enough zoom launch fluttering fly pretty tight hook setting hook starts moving 48 lbs unlatches almost 7 lbs tension model really has build up speed unlatch 7 lbs Another problem tail booms Fiber booms flex little too much super hard launches built up boom helps quite lot besides being lighter struc ture tail boom taken Ekhten hovs 1973 winner Its really stiff quite light built properly front end much deeper adds considerably side area Its pur pose help model stay straighter higher speeds acts like forward fin Three degrees seems about opti mum angle attack wing Models less dont seem go high have poor recovery Ships angle have good recoveries seem too loopy dont get high either exceptions course construction details follow way build ships people have special building techniques really doesnt matter what technique used build model models important thing turn out correctly personal techniques work better use Construction Before beginning actual construction wing two items con sider absolute must good ship first airfoil sanding block Cut block wood slightly wider wing chord Cut top block match bot tom camber airfoil bottom block match top camber airfoil glue 320 sandpaper block Using method wing very consistent airfoil may produced has always opinion con stant airfoil tip tip much important trying get exact G F6 B6356B etc naturally get close possible second item preparation jig construction modern high-perform ance under-cambered wings can con siderably simplified speeded up using curved form wing jig initial stages construction no need pack up leading trailing edges traditional way much time can thus saved Later because entire under surface wing panel supported much holding pressure can ap plied ribs collapsing splitting shaping leading trailing edges insertion top spars becomes much easier fact whole process building wing panel appears much easier because undercamber support not-so-skillful less ex perienced modeler can attempt construc tion formerly would consider too difficult Generally wing warps may built wing panels limited degree resorting packing after would defeat main advan tages wing jig Wing jigs also very useful repairs rebuilds damaged flying surfaces necessary because big heavy standard building board could taken flying field on-the-spot repairs sometimes necessary during contest recent years 44 Model Aviation advent quick-drying epoxies com plicated field repairs possible jig will certainly prove beneficial model box lid Construction Wing Jig ero Modeller Draw airfoil full size accurately possible Using undercamber por tion carefully draw tangents leading trailing edges smooth continuous line produced extend t rear airfoil width baseboard deter mined length baseboard such accommodate longest length wing panel likely assembled over jig Something around 30 normal Having determined dimensions base board must now cut size k board clipboard similar make sure whatever material used perfectly flat Using set square mark off locations ribs allowing uniform spacing about 2 2 between ribs mark locations webbing Care fully make plywood rib template make sufficient ribs balsa sheet cut out pin together sand ensure have identical profile Epoxy ribs baseboard marked off locations next stage epoxy place webs made 1/4 medium balsa sheet located leading trailing edges inter mediates along chord give about 2 2 gaps Make webs slightly over size vertical direction epoxy set plane sand cor rect camber flush ribs Next cut piece 1/16 thick plywood slightly oversize fit over top assembled structure Cover structure contact cement attach ply wood top using rubber strips weights hold down until epoxy sets dry remove rubber strip weights trim plywood size Finally give jig four five coats dope rubbing down between coat 600 grade wet dry paper complete two three coats car floor wax polish Wing Make plywood center ribs first making sure exactly same holes line up Spar notch es cut before assembly plywood ribs Next cut main ribs center panels 8-10 lb C-grain 1/16 sheet Cut main ribs tips slightly lighter material Select good hard piece balsa portion trailing edge epoxy spruce portion spruce cap rear IE absolute necessity thin airfoils today shaping notch TE before assembly Pin LE TE bottom sheeting place jig Position plywood root ribs tack place epoxy Note best results come building center panels end end Tubing cut two after complete assembly wing Now glue main ribs allow dry Using straight edge mark cut notches top spars Install top spars sheeting etc Allow dry still jig After thoroughly dry remove wing jig same bottom Next add webbing spars remainder sheeting cross ribs cross ribs cut slightly oversize sanded shape after assembly airfoil block tips can now assembled jig leading edges straight Due taper airfoiled jig will automatically build required amount wash out Dihedral angles may sanded /4 top ribs propping wing up desired angle sanding flat sanding block band launch glider style Finish sanding entire wing 400A sandpaper point apply total five coats 60-40 dope entire struc ture serves dual purpose First insures tissue will stick part structure touches sec ondly especially helpful weatherproofing wood Models done way will last several years flying Allow structure dry thoroughly cover Japanese tissue Monokote does give proper rigidity required zoom launching plus fact just too slick slick surface definitely hurts glide Bob White using flatner dope roughen up flying surfaces obvi ously successful attempt make air stick airfoils better bottom center panels should double-covered help cut down punctures Note dont remember seeing single airplane World Champs Monokoted thats 3 events Apply several coats dope allow dry thoroughly Add March1976 45 rear end showing built-up fin rudder stabilizer popped-up position Nordic A-2 models hard get Out strong lift hence severe pop-up angles Photo taken during launching Note line attached right wrist mono filament hangs free lies ground Al tangle free Tricks trade NO OCR TEXT turbulators set up cure finish rest model Stab Rudder Carefully select wood rudder/fin stabilizer Lightness virtue dont build too flimsy hear talk 7- 10-gram stabs people just turn green envy stab light just necessary 1975 World Champions stab weighs al 12 grams recommend building substantial stab 10 12 grams can make up extra weight elsewhere tail end built-up rudder can save 2 grams built properly wood rudders stripped sheet Use 4-lb stock possible After construction coat entire rudder Hot- Stuff will yield rudder extremely light yet very tough Coat framework rudder stab three thin coats clear dope cover Japanese tissue About three coats dope over tissue fine Set aside allow cure Fuselage want build all-out serious model have access materials making large diameter fiber glass tube built-up balsa spruce tail boom best way go can built much easier rolled balsa tube ones built turned out extremely stiff much fiber boom built-up booms stiffer also 4 6 grams lighter comparable length fiber tube Cut sides tail boom stiff light 3/32 sheet use C grain cause thats what use almost everywhere Make sure both sides match exactly Sand sides taper 3/32 thick front 1/32 extreme rear Pin two sides flat board add square blocks geodetic bracing avoid excess pulling especially excess weight glue build-up entire aft end ships rear wing back built Hot-Stuff Build-up tail boom separate unit After front end constructed certain stage boom just plugged place epoxied sure make provisions braided steel auto-rudder cable front end fuselage relatively simple Using template shown cut out main keel ood sides 1/16 plywood Two /s ribs epox ied add support wing wires use K&B microballoons 5-minute epoxy fill around two /8 ribs make other fillets use Cerrabend ballast because weighs almost twice much lead has much lower melting point can obtained larger model train shops use ballast model trains need lot weight small area finish fuselages follows Apply two three coats clear dope boom cover Japanese tissue tissue gets three coats clear dope front end gets three coats lacquer sanding sealer tail boom forward Allow dry thoroughly sand flat 320 400 sandpaper lacquer seal er very easy work yields ex tremely smooth surface paint over use white spray lacquer color dries quickly especially easy work Much white epoxy used past Allow lacquer dry thoroughly Hook up auto-rudder DT lines install timer tow hook etc Flying Make few test glides insure CG incidence close Re member will need approximately 3/32 up tail due turbu lator strips wing new circle towing good way start off make first few flights tow hook unlatched Simply tow model top notice what rudder adjustments should made produce straight tow After model towing straight due wash-in right wing certain amount left rudder may required produce straight tow dont worry normal Set latch attempt circle model Due excess drag tow line rudder setting approximately 250 required turn model presently am using Russian towing method ie 50-lb test monofilament no tow reel Slack line taken up reeling line hand-over-hand using hand-over-hand method model can also pulled quickly top set up circle setting up circle pull model over head slight ly over front Pull nose down let go model will stall quickly turn about turn should tight possible spinning spiralling down lift encountered Always sure have enough slack line turn can made tension line will need con tinned page 95 / grace soaring birds found Nordic flight Dons hook starts moving 48 lbs pressure releases 7 lbs tension March 1976 47 Front end Hyperion showing neat stallation Czech tow hook Sellig timer Hardware Jim Crockett columns Hyperion Mk Vby Bob Meuser include such sources under head Bob Uguccioni mailed news releases area newspapers well publishing event week ly booklet distributed throughout entire resort area RCers Aeroguidance Society Endicott New York pylon racing group Harrisburg agreed help us show Everything geared October 18 1975 100 pm As luck would have time year rain Frantic calls regional flight service Wilkes Barre 700 morning re assuringrain entire day prepara tions cancelled flying guests out town called food refrigerated frozen new advertising campaign started regear rain date October 25 1975 Advertisements ran local paper during rain-date week stating Red Baron caught cold pre paring fight Snoopy recovered battle Thursday rain-date week rain date being Oc tober 25 1975 everything set weather forecast good weekend luck would have forecast changed Friday evening plagued fine mist during early Saturday morning hours Again called flight service station Wilkes Barre report called rising ceiling no rain cells area Winds light variable early morn ing fog drizzle should cleared noon plowed ahead prepared show eating area moved inside rain-soaked cooks prepared hotdogs hamburgers charcoal hearths PA system set up hangar away flying area announcer Duane Walck could see comment aerial maneu vers rock group Reign also set up inside hangar protect electronic gear As 100 pm neared people helping preparation performance show present Joel Samuelson president Po cono Modelers Chairman Air Show paced back forth hoping break weather Surprisingly people started trickle in light rain 130 started show ap proximately 150 200 spectators rain didnt clear until 300 afternoon Don Hewlings opened show flying Bristol Bullet over strip dropping official bicentennial flag followed RCjamboree R C Noll took off biplane pulling banner saying Wel come RC Fans show underway weather showing no signs clearing People would have come children stayed home lot honeymooners presume decided stay indoors due inclement weather R C Noll continued show flying Jet Star deBolt Acrobat Findecker Ralph Jackson turned spectacular scale flight YAT-28E also flew pattern Tiger Tail Dick Allen sliced through mist Tiger Tail Taube Sopwith Camel Pup Hank Farrell did snap rolls original biplane way should pub lished Model Aviation shortly Gary Booker flew deHavilland 10-F During ribbon cutting part show Don Hewlings clevis break turn spiraled totalling plane brave wet kids show thought greatest wanted Don repeat per formance glider portion show performed Tom Long flying Monterey Doug Williams flying Hobie Hawk Sterling Schoonover flew pattern Phoenix 6 also test flew Ugly Stik part aerial dog fight Because mechanical problems Ugly Stik decided use ship dog fight Allen Conklin flew eight-foot Aeronca Carl Stengel darted through sky 200 Quickie racer Tom Lilli flew original pattern Sweet Stik times planes seemed disap pear clouds Control-line performances ade quately handled Jim Bush flying stunt pattern Ken Sarer performed brilliantly carrier demonstration Cliff Hunt flew original adaptation gyrocopter As can see entire show devoted World War planes ever respectable number beautifully designed detailed scale planes added extra touch World War theme besides aerial dogfight between Red Baron Snoopy pylon racing teams control-line combat teams never did show because inclement weather During intermission live music provided Reign real hot rock group Poconos Door prizes donated various merchants given lucky people correct number grand prizes two vacations two Birchwood drawn before main event main event announced theme song Red Baron Snoopy piped through PA system Snoopy took off flying gracefully air yell ing taunts mean Red Baron Red Baron never did get air until Snoopy almost out gas Baron engine trouble Snoopy won default tremendous success first effort large part ex pected crowds never came because poor weather did come en joyed afternoon Free Delta Darts balloons given children people walked away valuable door prizes well greater apprecia tion what airplane modeling about clubs looking forward next year bigger better air show plan hold earlier year because weather goes well will making national event guaranteed prize money Poconos wonder ful place hold such large show Red Baron Birchwood looking forward revenge flight Hyperion/Cha ncey inntiniw4 aae 47 practice will automatically know much slack line required complete turn will need learn pull tension proper point cir cle build up speed launch etc Because stretchiness monoMarch1976 95 Rain Show/Samuelson continued page 37 Hyperion continued FULL-SIZE PLANS No 133 No 134 No 135 No 131 Gee Bee Model V 40-powered RC stand-off scale great old-time racers No 132 SwissWW II Fighter 45-inch CL scale-type sport model 29s 35s Jumbo Scale Douglas 0-38 large-size rubber-scale model biplane excellent duration Callisto superb Standard Class RC sailplane also took Nats first Hyperion Mk V Don Chanceys classic Nordic A-2 competed US team $500 $650 $600 $400 $275 Hinnents F-5 ultimate maneuverability smoothness 80 Pattern iob has all $450 Short Seamew 40-powered class i carrier model good prototype lends itself innovations $300 French Wench Free Flight classes 1/2A 049 051 fully tested design $225 Kioud King 15- 19 RC Old-Timer Free Flight based upon 1938 record breaker FF $400 Wiley Post Biplane Ntite durable scale design either rubber tail wagger Ipulse rudderlS225 Harold Ruarks Sportsman RC cabin iob pretty smooth lines 40 powered full-house $450 Vought Kingfisher semi-scale fully stuntable CL model Les King 25 35 engines1S450 Aeronca K 24 wingspan rubber Indoor Scale old-time lightplane Its done 90 seconds $200 Electric couldnt done Dick Sarpolus Astro 25 RC lob performs pattern $375 Bill Fuoris Quarter Midget House Balsa design modifications faster times $300 Zipper latest CL Scale Racers John Kilsdonk lob must racing fans $175 Max-a-Million fleet free flights problem good A/B FAI $375 5neat Sport RC glider simple lob can flown engine $275 Cessna 150 Acrobat Step up Half-A CL iobs 09-powered semi-profile easy build $275 Ernie Violetts OH Comet CL Scale 1974 Nats first-place winner classic twin $900 Niris An AC pattern mb takes advantage best existing criteria $400 Electra-Lit Hal Covers contest-type free flight VTOsHytork electric motor $150 Novice simple beginners A-i Nordic constructed entirely sheet balsa $150 GollyGeeWhiz Dan Rutherfords simple Half-A powered Combat iob turns dime $150 Four Beginners Too basic RC trainer 09 1 5s rudder elevator motor controls $300 Cathexis Dave Parsons FAI FF has auto-elevator rudder prop brake $450 Gremlin Sturdy acrobatic RC biplane flies well 35s up 60s $300 Hot Wood Twice Nats winner Rocket all-balsa Jetes-powered iob $100 4-Bits 40-powered RC 500 Club Racer has winning ways Good sport too $400 Semi-Pro Contest-winning HL glider has pop-up tail dethermalizer $100 HeIf-Korda rubber John Oldenkamps 1/2-size all-balsa Old-Timer $175 Hooptee MK Ill John Kiladonks CL Rat Racer involves latest state-of-the-art $175 SAC Drone Astro-lO electric-powered 80 scale AC powered glider $400 Komet CL 1/2-A profile semi-scale profile fun flying Mouse Race $200 Rebel Update famed deBolt RC kit Rudder/Elevator/Enginefor 15s $275 Altair Class A-B Free Flight conversion data other classes $400 -- le numbers plans wish order STATE 101 107 113 119 125 131 102 108 114 120 126 132 103 109 115 121 127 133 104 110 116 122 128 134 105 111 117 123 129 135 ZIP Price includes first-class postage Send check money order payable Model Aviation AMA 806 Fifteenth St. NW. Washington DC 20005 filament model can tugged pulled prematurely unlatching hook same hook tension can flown conditions Starts moving 48 lbs unlatches almost 7 lbs stretchy line makes thermal flying much better non-stretch line should used calm no-lift situations Conditions should compensated changing towline re-adjusting tension towhook real reason accidentally coming unlatched lack practice wont try explain details circle towing Most wont make lot sense anyway until youve tried have questions feel free ask Best luck model remember absolutely no substitute practice Practice until towing second nature thing should have worry about line finding thermal WANTED ideas happenings hints/kinks howto sketches photos news etc Send colum nist category concernedat address shown column photo idea printed Model Aviation will pay $5 contributor ADVERTISERS INDEX Ace Radio Control Inc77 Aldrich Products Inc82 Americas Hobby Center Inc86 Andrews Aircraft Model Co84 Bantam Precision Products Inc Cleveland Model & Supply Co80 Coverite81 Dept Transportation FAA94 Du-Bro Products Inc85 EK-logictrol93 Fox Manufacturing Co91 Carl Goldberg Models3 Grish Brothers77 G-S Products Corp Intl89 Paul K Guillow Inc83 Hobby Hideaway83 JASCO89 Kraft Great Lakes Inc80 K&S Engineering82 Midwest Products91 Models West Inc88 Peck-Polymers90 Polks Hobbies85 Progress Mfg Company84 Satellite City95 Semco Model Engineering78 Sig Mfg Company1 Sterling Models Inc90 Sullivan Products Inc86 Tom Sutor Trophies80 Top Flite11 VI Products81 Weak Signals R/C Club92 Westport International Inc87 Williams Brothers87 World EnginesBack Cover 96 Model Aviation No100 No101 No102 No103 No 104 No105 No 106 No107 No 108 No109 No110 No 111 No112 No 113 No114 No115 No116 No 117 No118 No119 No120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 No 128 No 129 No 130 100 106 112 118 124 130 Please print carefully NIAMF STREET CITY
Edition: Model Aviation - 1976/03
Page Numbers: 44, 45, 46, 47, 95, 96
Proudly displaying model flew World Championships author Don Chancey Much time effort goes development ship like thisfor example Chancey re-built wings five times obtain stiff light panel stand zoom launch flutter Designedby member US 1975 Nordic teamfor circle tow zoom launch glider incorporates latest practice flyperlon mkV THE HYPERION MK V devel oped 1975 World Championships Plovdiv Bulgaria model shown didnt just happen its present state model constantly changing due mostly because time come across new definitely better way doing something try incorporate ship Sometimes requires building new ship case Mark V wings re-built total five times before ended up pictured biggest problem wing structure building panel stiff enough still light enough zoom launch fluttering fly pretty tight hook setting hook starts moving 48 lbs unlatches almost 7 lbs tension model really has build up speed unlatch 7 lbs Another problem tail booms Fiber booms flex little too much super hard launches built up boom helps quite lot besides being lighter struc ture tail boom taken Ekhten hovs 1973 winner Its really stiff quite light built properly front end much deeper adds considerably side area Its pur pose help model stay straighter higher speeds acts like forward fin Three degrees seems about opti mum angle attack wing Models less dont seem go high have poor recovery Ships angle have good recoveries seem too loopy dont get high either exceptions course construction details follow way build ships people have special building techniques really doesnt matter what technique used build model models important thing turn out correctly personal techniques work better use Construction Before beginning actual construction wing two items con sider absolute must good ship first airfoil sanding block Cut block wood slightly wider wing chord Cut top block match bot tom camber airfoil bottom block match top camber airfoil glue 320 sandpaper block Using method wing very consistent airfoil may produced has always opinion con stant airfoil tip tip much important trying get exact G F6 B6356B etc naturally get close possible second item preparation jig construction modern high-perform ance under-cambered wings can con siderably simplified speeded up using curved form wing jig initial stages construction no need pack up leading trailing edges traditional way much time can thus saved Later because entire under surface wing panel supported much holding pressure can ap plied ribs collapsing splitting shaping leading trailing edges insertion top spars becomes much easier fact whole process building wing panel appears much easier because undercamber support not-so-skillful less ex perienced modeler can attempt construc tion formerly would consider too difficult Generally wing warps may built wing panels limited degree resorting packing after would defeat main advan tages wing jig Wing jigs also very useful repairs rebuilds damaged flying surfaces necessary because big heavy standard building board could taken flying field on-the-spot repairs sometimes necessary during contest recent years 44 Model Aviation advent quick-drying epoxies com plicated field repairs possible jig will certainly prove beneficial model box lid Construction Wing Jig ero Modeller Draw airfoil full size accurately possible Using undercamber por tion carefully draw tangents leading trailing edges smooth continuous line produced extend t rear airfoil width baseboard deter mined length baseboard such accommodate longest length wing panel likely assembled over jig Something around 30 normal Having determined dimensions base board must now cut size k board clipboard similar make sure whatever material used perfectly flat Using set square mark off locations ribs allowing uniform spacing about 2 2 between ribs mark locations webbing Care fully make plywood rib template make sufficient ribs balsa sheet cut out pin together sand ensure have identical profile Epoxy ribs baseboard marked off locations next stage epoxy place webs made 1/4 medium balsa sheet located leading trailing edges inter mediates along chord give about 2 2 gaps Make webs slightly over size vertical direction epoxy set plane sand cor rect camber flush ribs Next cut piece 1/16 thick plywood slightly oversize fit over top assembled structure Cover structure contact cement attach ply wood top using rubber strips weights hold down until epoxy sets dry remove rubber strip weights trim plywood size Finally give jig four five coats dope rubbing down between coat 600 grade wet dry paper complete two three coats car floor wax polish Wing Make plywood center ribs first making sure exactly same holes line up Spar notch es cut before assembly plywood ribs Next cut main ribs center panels 8-10 lb C-grain 1/16 sheet Cut main ribs tips slightly lighter material Select good hard piece balsa portion trailing edge epoxy spruce portion spruce cap rear IE absolute necessity thin airfoils today shaping notch TE before assembly Pin LE TE bottom sheeting place jig Position plywood root ribs tack place epoxy Note best results come building center panels end end Tubing cut two after complete assembly wing Now glue main ribs allow dry Using straight edge mark cut notches top spars Install top spars sheeting etc Allow dry still jig After thoroughly dry remove wing jig same bottom Next add webbing spars remainder sheeting cross ribs cross ribs cut slightly oversize sanded shape after assembly airfoil block tips can now assembled jig leading edges straight Due taper airfoiled jig will automatically build required amount wash out Dihedral angles may sanded /4 top ribs propping wing up desired angle sanding flat sanding block band launch glider style Finish sanding entire wing 400A sandpaper point apply total five coats 60-40 dope entire struc ture serves dual purpose First insures tissue will stick part structure touches sec ondly especially helpful weatherproofing wood Models done way will last several years flying Allow structure dry thoroughly cover Japanese tissue Monokote does give proper rigidity required zoom launching plus fact just too slick slick surface definitely hurts glide Bob White using flatner dope roughen up flying surfaces obvi ously successful attempt make air stick airfoils better bottom center panels should double-covered help cut down punctures Note dont remember seeing single airplane World Champs Monokoted thats 3 events Apply several coats dope allow dry thoroughly Add March1976 45 rear end showing built-up fin rudder stabilizer popped-up position Nordic A-2 models hard get Out strong lift hence severe pop-up angles Photo taken during launching Note line attached right wrist mono filament hangs free lies ground Al tangle free Tricks trade NO OCR TEXT turbulators set up cure finish rest model Stab Rudder Carefully select wood rudder/fin stabilizer Lightness virtue dont build too flimsy hear talk 7- 10-gram stabs people just turn green envy stab light just necessary 1975 World Champions stab weighs al 12 grams recommend building substantial stab 10 12 grams can make up extra weight elsewhere tail end built-up rudder can save 2 grams built properly wood rudders stripped sheet Use 4-lb stock possible After construction coat entire rudder Hot- Stuff will yield rudder extremely light yet very tough Coat framework rudder stab three thin coats clear dope cover Japanese tissue About three coats dope over tissue fine Set aside allow cure Fuselage want build all-out serious model have access materials making large diameter fiber glass tube built-up balsa spruce tail boom best way go can built much easier rolled balsa tube ones built turned out extremely stiff much fiber boom built-up booms stiffer also 4 6 grams lighter comparable length fiber tube Cut sides tail boom stiff light 3/32 sheet use C grain cause thats what use almost everywhere Make sure both sides match exactly Sand sides taper 3/32 thick front 1/32 extreme rear Pin two sides flat board add square blocks geodetic bracing avoid excess pulling especially excess weight glue build-up entire aft end ships rear wing back built Hot-Stuff Build-up tail boom separate unit After front end constructed certain stage boom just plugged place epoxied sure make provisions braided steel auto-rudder cable front end fuselage relatively simple Using template shown cut out main keel ood sides 1/16 plywood Two /s ribs epox ied add support wing wires use K&B microballoons 5-minute epoxy fill around two /8 ribs make other fillets use Cerrabend ballast because weighs almost twice much lead has much lower melting point can obtained larger model train shops use ballast model trains need lot weight small area finish fuselages follows Apply two three coats clear dope boom cover Japanese tissue tissue gets three coats clear dope front end gets three coats lacquer sanding sealer tail boom forward Allow dry thoroughly sand flat 320 400 sandpaper lacquer seal er very easy work yields ex tremely smooth surface paint over use white spray lacquer color dries quickly especially easy work Much white epoxy used past Allow lacquer dry thoroughly Hook up auto-rudder DT lines install timer tow hook etc Flying Make few test glides insure CG incidence close Re member will need approximately 3/32 up tail due turbu lator strips wing new circle towing good way start off make first few flights tow hook unlatched Simply tow model top notice what rudder adjustments should made produce straight tow After model towing straight due wash-in right wing certain amount left rudder may required produce straight tow dont worry normal Set latch attempt circle model Due excess drag tow line rudder setting approximately 250 required turn model presently am using Russian towing method ie 50-lb test monofilament no tow reel Slack line taken up reeling line hand-over-hand using hand-over-hand method model can also pulled quickly top set up circle setting up circle pull model over head slight ly over front Pull nose down let go model will stall quickly turn about turn should tight possible spinning spiralling down lift encountered Always sure have enough slack line turn can made tension line will need con tinned page 95 / grace soaring birds found Nordic flight Dons hook starts moving 48 lbs pressure releases 7 lbs tension March 1976 47 Front end Hyperion showing neat stallation Czech tow hook Sellig timer Hardware Jim Crockett columns Hyperion Mk Vby Bob Meuser include such sources under head Bob Uguccioni mailed news releases area newspapers well publishing event week ly booklet distributed throughout entire resort area RCers Aeroguidance Society Endicott New York pylon racing group Harrisburg agreed help us show Everything geared October 18 1975 100 pm As luck would have time year rain Frantic calls regional flight service Wilkes Barre 700 morning re assuringrain entire day prepara tions cancelled flying guests out town called food refrigerated frozen new advertising campaign started regear rain date October 25 1975 Advertisements ran local paper during rain-date week stating Red Baron caught cold pre paring fight Snoopy recovered battle Thursday rain-date week rain date being Oc tober 25 1975 everything set weather forecast good weekend luck would have forecast changed Friday evening plagued fine mist during early Saturday morning hours Again called flight service station Wilkes Barre report called rising ceiling no rain cells area Winds light variable early morn ing fog drizzle should cleared noon plowed ahead prepared show eating area moved inside rain-soaked cooks prepared hotdogs hamburgers charcoal hearths PA system set up hangar away flying area announcer Duane Walck could see comment aerial maneu vers rock group Reign also set up inside hangar protect electronic gear As 100 pm neared people helping preparation performance show present Joel Samuelson president Po cono Modelers Chairman Air Show paced back forth hoping break weather Surprisingly people started trickle in light rain 130 started show ap proximately 150 200 spectators rain didnt clear until 300 afternoon Don Hewlings opened show flying Bristol Bullet over strip dropping official bicentennial flag followed RCjamboree R C Noll took off biplane pulling banner saying Wel come RC Fans show underway weather showing no signs clearing People would have come children stayed home lot honeymooners presume decided stay indoors due inclement weather R C Noll continued show flying Jet Star deBolt Acrobat Findecker Ralph Jackson turned spectacular scale flight YAT-28E also flew pattern Tiger Tail Dick Allen sliced through mist Tiger Tail Taube Sopwith Camel Pup Hank Farrell did snap rolls original biplane way should pub lished Model Aviation shortly Gary Booker flew deHavilland 10-F During ribbon cutting part show Don Hewlings clevis break turn spiraled totalling plane brave wet kids show thought greatest wanted Don repeat per formance glider portion show performed Tom Long flying Monterey Doug Williams flying Hobie Hawk Sterling Schoonover flew pattern Phoenix 6 also test flew Ugly Stik part aerial dog fight Because mechanical problems Ugly Stik decided use ship dog fight Allen Conklin flew eight-foot Aeronca Carl Stengel darted through sky 200 Quickie racer Tom Lilli flew original pattern Sweet Stik times planes seemed disap pear clouds Control-line performances ade quately handled Jim Bush flying stunt pattern Ken Sarer performed brilliantly carrier demonstration Cliff Hunt flew original adaptation gyrocopter As can see entire show devoted World War planes ever respectable number beautifully designed detailed scale planes added extra touch World War theme besides aerial dogfight between Red Baron Snoopy pylon racing teams control-line combat teams never did show because inclement weather During intermission live music provided Reign real hot rock group Poconos Door prizes donated various merchants given lucky people correct number grand prizes two vacations two Birchwood drawn before main event main event announced theme song Red Baron Snoopy piped through PA system Snoopy took off flying gracefully air yell ing taunts mean Red Baron Red Baron never did get air until Snoopy almost out gas Baron engine trouble Snoopy won default tremendous success first effort large part ex pected crowds never came because poor weather did come en joyed afternoon Free Delta Darts balloons given children people walked away valuable door prizes well greater apprecia tion what airplane modeling about clubs looking forward next year bigger better air show plan hold earlier year because weather goes well will making national event guaranteed prize money Poconos wonder ful place hold such large show Red Baron Birchwood looking forward revenge flight Hyperion/Cha ncey inntiniw4 aae 47 practice will automatically know much slack line required complete turn will need learn pull tension proper point cir cle build up speed launch etc Because stretchiness monoMarch1976 95 Rain Show/Samuelson continued page 37 Hyperion continued FULL-SIZE PLANS No 133 No 134 No 135 No 131 Gee Bee Model V 40-powered RC stand-off scale great old-time racers No 132 SwissWW II Fighter 45-inch CL scale-type sport model 29s 35s Jumbo Scale Douglas 0-38 large-size rubber-scale model biplane excellent duration Callisto superb Standard Class RC sailplane also took Nats first Hyperion Mk V Don Chanceys classic Nordic A-2 competed US team $500 $650 $600 $400 $275 Hinnents F-5 ultimate maneuverability smoothness 80 Pattern iob has all $450 Short Seamew 40-powered class i carrier model good prototype lends itself innovations $300 French Wench Free Flight classes 1/2A 049 051 fully tested design $225 Kioud King 15- 19 RC Old-Timer Free Flight based upon 1938 record breaker FF $400 Wiley Post Biplane Ntite durable scale design either rubber tail wagger Ipulse rudderlS225 Harold Ruarks Sportsman RC cabin iob pretty smooth lines 40 powered full-house $450 Vought Kingfisher semi-scale fully stuntable CL model Les King 25 35 engines1S450 Aeronca K 24 wingspan rubber Indoor Scale old-time lightplane Its done 90 seconds $200 Electric couldnt done Dick Sarpolus Astro 25 RC lob performs pattern $375 Bill Fuoris Quarter Midget House Balsa design modifications faster times $300 Zipper latest CL Scale Racers John Kilsdonk lob must racing fans $175 Max-a-Million fleet free flights problem good A/B FAI $375 5neat Sport RC glider simple lob can flown engine $275 Cessna 150 Acrobat Step up Half-A CL iobs 09-powered semi-profile easy build $275 Ernie Violetts OH Comet CL Scale 1974 Nats first-place winner classic twin $900 Niris An AC pattern mb takes advantage best existing criteria $400 Electra-Lit Hal Covers contest-type free flight VTOsHytork electric motor $150 Novice simple beginners A-i Nordic constructed entirely sheet balsa $150 GollyGeeWhiz Dan Rutherfords simple Half-A powered Combat iob turns dime $150 Four Beginners Too basic RC trainer 09 1 5s rudder elevator motor controls $300 Cathexis Dave Parsons FAI FF has auto-elevator rudder prop brake $450 Gremlin Sturdy acrobatic RC biplane flies well 35s up 60s $300 Hot Wood Twice Nats winner Rocket all-balsa Jetes-powered iob $100 4-Bits 40-powered RC 500 Club Racer has winning ways Good sport too $400 Semi-Pro Contest-winning HL glider has pop-up tail dethermalizer $100 HeIf-Korda rubber John Oldenkamps 1/2-size all-balsa Old-Timer $175 Hooptee MK Ill John Kiladonks CL Rat Racer involves latest state-of-the-art $175 SAC Drone Astro-lO electric-powered 80 scale AC powered glider $400 Komet CL 1/2-A profile semi-scale profile fun flying Mouse Race $200 Rebel Update famed deBolt RC kit Rudder/Elevator/Enginefor 15s $275 Altair Class A-B Free Flight conversion data other classes $400 -- le numbers plans wish order STATE 101 107 113 119 125 131 102 108 114 120 126 132 103 109 115 121 127 133 104 110 116 122 128 134 105 111 117 123 129 135 ZIP Price includes first-class postage Send check money order payable Model Aviation AMA 806 Fifteenth St. NW. Washington DC 20005 filament model can tugged pulled prematurely unlatching hook same hook tension can flown conditions Starts moving 48 lbs unlatches almost 7 lbs stretchy line makes thermal flying much better non-stretch line should used calm no-lift situations Conditions should compensated changing towline re-adjusting tension towhook real reason accidentally coming unlatched lack practice wont try explain details circle towing Most wont make lot sense anyway until youve tried have questions feel free ask Best luck model remember absolutely no substitute practice Practice until towing second nature thing should have worry about line finding thermal WANTED ideas happenings hints/kinks howto sketches photos news etc Send colum nist category concernedat address shown column photo idea printed Model Aviation will pay $5 contributor ADVERTISERS INDEX Ace Radio Control Inc77 Aldrich Products Inc82 Americas Hobby Center Inc86 Andrews Aircraft Model Co84 Bantam Precision Products Inc Cleveland Model & Supply Co80 Coverite81 Dept Transportation FAA94 Du-Bro Products Inc85 EK-logictrol93 Fox Manufacturing Co91 Carl Goldberg Models3 Grish Brothers77 G-S Products Corp Intl89 Paul K Guillow Inc83 Hobby Hideaway83 JASCO89 Kraft Great Lakes Inc80 K&S Engineering82 Midwest Products91 Models West Inc88 Peck-Polymers90 Polks Hobbies85 Progress Mfg Company84 Satellite City95 Semco Model Engineering78 Sig Mfg Company1 Sterling Models Inc90 Sullivan Products Inc86 Tom Sutor Trophies80 Top Flite11 VI Products81 Weak Signals R/C Club92 Westport International Inc87 Williams Brothers87 World EnginesBack Cover 96 Model Aviation No100 No101 No102 No103 No 104 No105 No 106 No107 No 108 No109 No110 No 111 No112 No 113 No114 No115 No116 No 117 No118 No119 No120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 No 128 No 129 No 130 100 106 112 118 124 130 Please print carefully NIAMF STREET CITY
Edition: Model Aviation - 1976/03
Page Numbers: 44, 45, 46, 47, 95, 96
Proudly displaying model flew World Championships author Don Chancey Much time effort goes development ship like thisfor example Chancey re-built wings five times obtain stiff light panel stand zoom launch flutter Designedby member US 1975 Nordic teamfor circle tow zoom launch glider incorporates latest practice flyperlon mkV THE HYPERION MK V devel oped 1975 World Championships Plovdiv Bulgaria model shown didnt just happen its present state model constantly changing due mostly because time come across new definitely better way doing something try incorporate ship Sometimes requires building new ship case Mark V wings re-built total five times before ended up pictured biggest problem wing structure building panel stiff enough still light enough zoom launch fluttering fly pretty tight hook setting hook starts moving 48 lbs unlatches almost 7 lbs tension model really has build up speed unlatch 7 lbs Another problem tail booms Fiber booms flex little too much super hard launches built up boom helps quite lot besides being lighter struc ture tail boom taken Ekhten hovs 1973 winner Its really stiff quite light built properly front end much deeper adds considerably side area Its pur pose help model stay straighter higher speeds acts like forward fin Three degrees seems about opti mum angle attack wing Models less dont seem go high have poor recovery Ships angle have good recoveries seem too loopy dont get high either exceptions course construction details follow way build ships people have special building techniques really doesnt matter what technique used build model models important thing turn out correctly personal techniques work better use Construction Before beginning actual construction wing two items con sider absolute must good ship first airfoil sanding block Cut block wood slightly wider wing chord Cut top block match bot tom camber airfoil bottom block match top camber airfoil glue 320 sandpaper block Using method wing very consistent airfoil may produced has always opinion con stant airfoil tip tip much important trying get exact G F6 B6356B etc naturally get close possible second item preparation jig construction modern high-perform ance under-cambered wings can con siderably simplified speeded up using curved form wing jig initial stages construction no need pack up leading trailing edges traditional way much time can thus saved Later because entire under surface wing panel supported much holding pressure can ap plied ribs collapsing splitting shaping leading trailing edges insertion top spars becomes much easier fact whole process building wing panel appears much easier because undercamber support not-so-skillful less ex perienced modeler can attempt construc tion formerly would consider too difficult Generally wing warps may built wing panels limited degree resorting packing after would defeat main advan tages wing jig Wing jigs also very useful repairs rebuilds damaged flying surfaces necessary because big heavy standard building board could taken flying field on-the-spot repairs sometimes necessary during contest recent years 44 Model Aviation advent quick-drying epoxies com plicated field repairs possible jig will certainly prove beneficial model box lid Construction Wing Jig ero Modeller Draw airfoil full size accurately possible Using undercamber por tion carefully draw tangents leading trailing edges smooth continuous line produced extend t rear airfoil width baseboard deter mined length baseboard such accommodate longest length wing panel likely assembled over jig Something around 30 normal Having determined dimensions base board must now cut size k board clipboard similar make sure whatever material used perfectly flat Using set square mark off locations ribs allowing uniform spacing about 2 2 between ribs mark locations webbing Care fully make plywood rib template make sufficient ribs balsa sheet cut out pin together sand ensure have identical profile Epoxy ribs baseboard marked off locations next stage epoxy place webs made 1/4 medium balsa sheet located leading trailing edges inter mediates along chord give about 2 2 gaps Make webs slightly over size vertical direction epoxy set plane sand cor rect camber flush ribs Next cut piece 1/16 thick plywood slightly oversize fit over top assembled structure Cover structure contact cement attach ply wood top using rubber strips weights hold down until epoxy sets dry remove rubber strip weights trim plywood size Finally give jig four five coats dope rubbing down between coat 600 grade wet dry paper complete two three coats car floor wax polish Wing Make plywood center ribs first making sure exactly same holes line up Spar notch es cut before assembly plywood ribs Next cut main ribs center panels 8-10 lb C-grain 1/16 sheet Cut main ribs tips slightly lighter material Select good hard piece balsa portion trailing edge epoxy spruce portion spruce cap rear IE absolute necessity thin airfoils today shaping notch TE before assembly Pin LE TE bottom sheeting place jig Position plywood root ribs tack place epoxy Note best results come building center panels end end Tubing cut two after complete assembly wing Now glue main ribs allow dry Using straight edge mark cut notches top spars Install top spars sheeting etc Allow dry still jig After thoroughly dry remove wing jig same bottom Next add webbing spars remainder sheeting cross ribs cross ribs cut slightly oversize sanded shape after assembly airfoil block tips can now assembled jig leading edges straight Due taper airfoiled jig will automatically build required amount wash out Dihedral angles may sanded /4 top ribs propping wing up desired angle sanding flat sanding block band launch glider style Finish sanding entire wing 400A sandpaper point apply total five coats 60-40 dope entire struc ture serves dual purpose First insures tissue will stick part structure touches sec ondly especially helpful weatherproofing wood Models done way will last several years flying Allow structure dry thoroughly cover Japanese tissue Monokote does give proper rigidity required zoom launching plus fact just too slick slick surface definitely hurts glide Bob White using flatner dope roughen up flying surfaces obvi ously successful attempt make air stick airfoils better bottom center panels should double-covered help cut down punctures Note dont remember seeing single airplane World Champs Monokoted thats 3 events Apply several coats dope allow dry thoroughly Add March1976 45 rear end showing built-up fin rudder stabilizer popped-up position Nordic A-2 models hard get Out strong lift hence severe pop-up angles Photo taken during launching Note line attached right wrist mono filament hangs free lies ground Al tangle free Tricks trade NO OCR TEXT turbulators set up cure finish rest model Stab Rudder Carefully select wood rudder/fin stabilizer Lightness virtue dont build too flimsy hear talk 7- 10-gram stabs people just turn green envy stab light just necessary 1975 World Champions stab weighs al 12 grams recommend building substantial stab 10 12 grams can make up extra weight elsewhere tail end built-up rudder can save 2 grams built properly wood rudders stripped sheet Use 4-lb stock possible After construction coat entire rudder Hot- Stuff will yield rudder extremely light yet very tough Coat framework rudder stab three thin coats clear dope cover Japanese tissue About three coats dope over tissue fine Set aside allow cure Fuselage want build all-out serious model have access materials making large diameter fiber glass tube built-up balsa spruce tail boom best way go can built much easier rolled balsa tube ones built turned out extremely stiff much fiber boom built-up booms stiffer also 4 6 grams lighter comparable length fiber tube Cut sides tail boom stiff light 3/32 sheet use C grain cause thats what use almost everywhere Make sure both sides match exactly Sand sides taper 3/32 thick front 1/32 extreme rear Pin two sides flat board add square blocks geodetic bracing avoid excess pulling especially excess weight glue build-up entire aft end ships rear wing back built Hot-Stuff Build-up tail boom separate unit After front end constructed certain stage boom just plugged place epoxied sure make provisions braided steel auto-rudder cable front end fuselage relatively simple Using template shown cut out main keel ood sides 1/16 plywood Two /s ribs epox ied add support wing wires use K&B microballoons 5-minute epoxy fill around two /8 ribs make other fillets use Cerrabend ballast because weighs almost twice much lead has much lower melting point can obtained larger model train shops use ballast model trains need lot weight small area finish fuselages follows Apply two three coats clear dope boom cover Japanese tissue tissue gets three coats clear dope front end gets three coats lacquer sanding sealer tail boom forward Allow dry thoroughly sand flat 320 400 sandpaper lacquer seal er very easy work yields ex tremely smooth surface paint over use white spray lacquer color dries quickly especially easy work Much white epoxy used past Allow lacquer dry thoroughly Hook up auto-rudder DT lines install timer tow hook etc Flying Make few test glides insure CG incidence close Re member will need approximately 3/32 up tail due turbu lator strips wing new circle towing good way start off make first few flights tow hook unlatched Simply tow model top notice what rudder adjustments should made produce straight tow After model towing straight due wash-in right wing certain amount left rudder may required produce straight tow dont worry normal Set latch attempt circle model Due excess drag tow line rudder setting approximately 250 required turn model presently am using Russian towing method ie 50-lb test monofilament no tow reel Slack line taken up reeling line hand-over-hand using hand-over-hand method model can also pulled quickly top set up circle setting up circle pull model over head slight ly over front Pull nose down let go model will stall quickly turn about turn should tight possible spinning spiralling down lift encountered Always sure have enough slack line turn can made tension line will need con tinned page 95 / grace soaring birds found Nordic flight Dons hook starts moving 48 lbs pressure releases 7 lbs tension March 1976 47 Front end Hyperion showing neat stallation Czech tow hook Sellig timer Hardware Jim Crockett columns Hyperion Mk Vby Bob Meuser include such sources under head Bob Uguccioni mailed news releases area newspapers well publishing event week ly booklet distributed throughout entire resort area RCers Aeroguidance Society Endicott New York pylon racing group Harrisburg agreed help us show Everything geared October 18 1975 100 pm As luck would have time year rain Frantic calls regional flight service Wilkes Barre 700 morning re assuringrain entire day prepara tions cancelled flying guests out town called food refrigerated frozen new advertising campaign started regear rain date October 25 1975 Advertisements ran local paper during rain-date week stating Red Baron caught cold pre paring fight Snoopy recovered battle Thursday rain-date week rain date being Oc tober 25 1975 everything set weather forecast good weekend luck would have forecast changed Friday evening plagued fine mist during early Saturday morning hours Again called flight service station Wilkes Barre report called rising ceiling no rain cells area Winds light variable early morn ing fog drizzle should cleared noon plowed ahead prepared show eating area moved inside rain-soaked cooks prepared hotdogs hamburgers charcoal hearths PA system set up hangar away flying area announcer Duane Walck could see comment aerial maneu vers rock group Reign also set up inside hangar protect electronic gear As 100 pm neared people helping preparation performance show present Joel Samuelson president Po cono Modelers Chairman Air Show paced back forth hoping break weather Surprisingly people started trickle in light rain 130 started show ap proximately 150 200 spectators rain didnt clear until 300 afternoon Don Hewlings opened show flying Bristol Bullet over strip dropping official bicentennial flag followed RCjamboree R C Noll took off biplane pulling banner saying Wel come RC Fans show underway weather showing no signs clearing People would have come children stayed home lot honeymooners presume decided stay indoors due inclement weather R C Noll continued show flying Jet Star deBolt Acrobat Findecker Ralph Jackson turned spectacular scale flight YAT-28E also flew pattern Tiger Tail Dick Allen sliced through mist Tiger Tail Taube Sopwith Camel Pup Hank Farrell did snap rolls original biplane way should pub lished Model Aviation shortly Gary Booker flew deHavilland 10-F During ribbon cutting part show Don Hewlings clevis break turn spiraled totalling plane brave wet kids show thought greatest wanted Don repeat per formance glider portion show performed Tom Long flying Monterey Doug Williams flying Hobie Hawk Sterling Schoonover flew pattern Phoenix 6 also test flew Ugly Stik part aerial dog fight Because mechanical problems Ugly Stik decided use ship dog fight Allen Conklin flew eight-foot Aeronca Carl Stengel darted through sky 200 Quickie racer Tom Lilli flew original pattern Sweet Stik times planes seemed disap pear clouds Control-line performances ade quately handled Jim Bush flying stunt pattern Ken Sarer performed brilliantly carrier demonstration Cliff Hunt flew original adaptation gyrocopter As can see entire show devoted World War planes ever respectable number beautifully designed detailed scale planes added extra touch World War theme besides aerial dogfight between Red Baron Snoopy pylon racing teams control-line combat teams never did show because inclement weather During intermission live music provided Reign real hot rock group Poconos Door prizes donated various merchants given lucky people correct number grand prizes two vacations two Birchwood drawn before main event main event announced theme song Red Baron Snoopy piped through PA system Snoopy took off flying gracefully air yell ing taunts mean Red Baron Red Baron never did get air until Snoopy almost out gas Baron engine trouble Snoopy won default tremendous success first effort large part ex pected crowds never came because poor weather did come en joyed afternoon Free Delta Darts balloons given children people walked away valuable door prizes well greater apprecia tion what airplane modeling about clubs looking forward next year bigger better air show plan hold earlier year because weather goes well will making national event guaranteed prize money Poconos wonder ful place hold such large show Red Baron Birchwood looking forward revenge flight Hyperion/Cha ncey inntiniw4 aae 47 practice will automatically know much slack line required complete turn will need learn pull tension proper point cir cle build up speed launch etc Because stretchiness monoMarch1976 95 Rain Show/Samuelson continued page 37 Hyperion continued FULL-SIZE PLANS No 133 No 134 No 135 No 131 Gee Bee Model V 40-powered RC stand-off scale great old-time racers No 132 SwissWW II Fighter 45-inch CL scale-type sport model 29s 35s Jumbo Scale Douglas 0-38 large-size rubber-scale model biplane excellent duration Callisto superb Standard Class RC sailplane also took Nats first Hyperion Mk V Don Chanceys classic Nordic A-2 competed US team $500 $650 $600 $400 $275 Hinnents F-5 ultimate maneuverability smoothness 80 Pattern iob has all $450 Short Seamew 40-powered class i carrier model good prototype lends itself innovations $300 French Wench Free Flight classes 1/2A 049 051 fully tested design $225 Kioud King 15- 19 RC Old-Timer Free Flight based upon 1938 record breaker FF $400 Wiley Post Biplane Ntite durable scale design either rubber tail wagger Ipulse rudderlS225 Harold Ruarks Sportsman RC cabin iob pretty smooth lines 40 powered full-house $450 Vought Kingfisher semi-scale fully stuntable CL model Les King 25 35 engines1S450 Aeronca K 24 wingspan rubber Indoor Scale old-time lightplane Its done 90 seconds $200 Electric couldnt done Dick Sarpolus Astro 25 RC lob performs pattern $375 Bill Fuoris Quarter Midget House Balsa design modifications faster times $300 Zipper latest CL Scale Racers John Kilsdonk lob must racing fans $175 Max-a-Million fleet free flights problem good A/B FAI $375 5neat Sport RC glider simple lob can flown engine $275 Cessna 150 Acrobat Step up Half-A CL iobs 09-powered semi-profile easy build $275 Ernie Violetts OH Comet CL Scale 1974 Nats first-place winner classic twin $900 Niris An AC pattern mb takes advantage best existing criteria $400 Electra-Lit Hal Covers contest-type free flight VTOsHytork electric motor $150 Novice simple beginners A-i Nordic constructed entirely sheet balsa $150 GollyGeeWhiz Dan Rutherfords simple Half-A powered Combat iob turns dime $150 Four Beginners Too basic RC trainer 09 1 5s rudder elevator motor controls $300 Cathexis Dave Parsons FAI FF has auto-elevator rudder prop brake $450 Gremlin Sturdy acrobatic RC biplane flies well 35s up 60s $300 Hot Wood Twice Nats winner Rocket all-balsa Jetes-powered iob $100 4-Bits 40-powered RC 500 Club Racer has winning ways Good sport too $400 Semi-Pro Contest-winning HL glider has pop-up tail dethermalizer $100 HeIf-Korda rubber John Oldenkamps 1/2-size all-balsa Old-Timer $175 Hooptee MK Ill John Kiladonks CL Rat Racer involves latest state-of-the-art $175 SAC Drone Astro-lO electric-powered 80 scale AC powered glider $400 Komet CL 1/2-A profile semi-scale profile fun flying Mouse Race $200 Rebel Update famed deBolt RC kit Rudder/Elevator/Enginefor 15s $275 Altair Class A-B Free Flight conversion data other classes $400 -- le numbers plans wish order STATE 101 107 113 119 125 131 102 108 114 120 126 132 103 109 115 121 127 133 104 110 116 122 128 134 105 111 117 123 129 135 ZIP Price includes first-class postage Send check money order payable Model Aviation AMA 806 Fifteenth St. NW. Washington DC 20005 filament model can tugged pulled prematurely unlatching hook same hook tension can flown conditions Starts moving 48 lbs unlatches almost 7 lbs stretchy line makes thermal flying much better non-stretch line should used calm no-lift situations Conditions should compensated changing towline re-adjusting tension towhook real reason accidentally coming unlatched lack practice wont try explain details circle towing Most wont make lot sense anyway until youve tried have questions feel free ask Best luck model remember absolutely no substitute practice Practice until towing second nature thing should have worry about line finding thermal WANTED ideas happenings hints/kinks howto sketches photos news etc Send colum nist category concernedat address shown column photo idea printed Model Aviation will pay $5 contributor ADVERTISERS INDEX Ace Radio Control Inc77 Aldrich Products Inc82 Americas Hobby Center Inc86 Andrews Aircraft Model Co84 Bantam Precision Products Inc Cleveland Model & Supply Co80 Coverite81 Dept Transportation FAA94 Du-Bro Products Inc85 EK-logictrol93 Fox Manufacturing Co91 Carl Goldberg Models3 Grish Brothers77 G-S Products Corp Intl89 Paul K Guillow Inc83 Hobby Hideaway83 JASCO89 Kraft Great Lakes Inc80 K&S Engineering82 Midwest Products91 Models West Inc88 Peck-Polymers90 Polks Hobbies85 Progress Mfg Company84 Satellite City95 Semco Model Engineering78 Sig Mfg Company1 Sterling Models Inc90 Sullivan Products Inc86 Tom Sutor Trophies80 Top Flite11 VI Products81 Weak Signals R/C Club92 Westport International Inc87 Williams Brothers87 World EnginesBack Cover 96 Model Aviation No100 No101 No102 No103 No 104 No105 No 106 No107 No 108 No109 No110 No 111 No112 No 113 No114 No115 No116 No 117 No118 No119 No120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 No 128 No 129 No 130 100 106 112 118 124 130 Please print carefully NIAMF STREET CITY
Edition: Model Aviation - 1976/03
Page Numbers: 44, 45, 46, 47, 95, 96
Proudly displaying model flew World Championships author Don Chancey Much time effort goes development ship like thisfor example Chancey re-built wings five times obtain stiff light panel stand zoom launch flutter Designedby member US 1975 Nordic teamfor circle tow zoom launch glider incorporates latest practice flyperlon mkV THE HYPERION MK V devel oped 1975 World Championships Plovdiv Bulgaria model shown didnt just happen its present state model constantly changing due mostly because time come across new definitely better way doing something try incorporate ship Sometimes requires building new ship case Mark V wings re-built total five times before ended up pictured biggest problem wing structure building panel stiff enough still light enough zoom launch fluttering fly pretty tight hook setting hook starts moving 48 lbs unlatches almost 7 lbs tension model really has build up speed unlatch 7 lbs Another problem tail booms Fiber booms flex little too much super hard launches built up boom helps quite lot besides being lighter struc ture tail boom taken Ekhten hovs 1973 winner Its really stiff quite light built properly front end much deeper adds considerably side area Its pur pose help model stay straighter higher speeds acts like forward fin Three degrees seems about opti mum angle attack wing Models less dont seem go high have poor recovery Ships angle have good recoveries seem too loopy dont get high either exceptions course construction details follow way build ships people have special building techniques really doesnt matter what technique used build model models important thing turn out correctly personal techniques work better use Construction Before beginning actual construction wing two items con sider absolute must good ship first airfoil sanding block Cut block wood slightly wider wing chord Cut top block match bot tom camber airfoil bottom block match top camber airfoil glue 320 sandpaper block Using method wing very consistent airfoil may produced has always opinion con stant airfoil tip tip much important trying get exact G F6 B6356B etc naturally get close possible second item preparation jig construction modern high-perform ance under-cambered wings can con siderably simplified speeded up using curved form wing jig initial stages construction no need pack up leading trailing edges traditional way much time can thus saved Later because entire under surface wing panel supported much holding pressure can ap plied ribs collapsing splitting shaping leading trailing edges insertion top spars becomes much easier fact whole process building wing panel appears much easier because undercamber support not-so-skillful less ex perienced modeler can attempt construc tion formerly would consider too difficult Generally wing warps may built wing panels limited degree resorting packing after would defeat main advan tages wing jig Wing jigs also very useful repairs rebuilds damaged flying surfaces necessary because big heavy standard building board could taken flying field on-the-spot repairs sometimes necessary during contest recent years 44 Model Aviation advent quick-drying epoxies com plicated field repairs possible jig will certainly prove beneficial model box lid Construction Wing Jig ero Modeller Draw airfoil full size accurately possible Using undercamber por tion carefully draw tangents leading trailing edges smooth continuous line produced extend t rear airfoil width baseboard deter mined length baseboard such accommodate longest length wing panel likely assembled over jig Something around 30 normal Having determined dimensions base board must now cut size k board clipboard similar make sure whatever material used perfectly flat Using set square mark off locations ribs allowing uniform spacing about 2 2 between ribs mark locations webbing Care fully make plywood rib template make sufficient ribs balsa sheet cut out pin together sand ensure have identical profile Epoxy ribs baseboard marked off locations next stage epoxy place webs made 1/4 medium balsa sheet located leading trailing edges inter mediates along chord give about 2 2 gaps Make webs slightly over size vertical direction epoxy set plane sand cor rect camber flush ribs Next cut piece 1/16 thick plywood slightly oversize fit over top assembled structure Cover structure contact cement attach ply wood top using rubber strips weights hold down until epoxy sets dry remove rubber strip weights trim plywood size Finally give jig four five coats dope rubbing down between coat 600 grade wet dry paper complete two three coats car floor wax polish Wing Make plywood center ribs first making sure exactly same holes line up Spar notch es cut before assembly plywood ribs Next cut main ribs center panels 8-10 lb C-grain 1/16 sheet Cut main ribs tips slightly lighter material Select good hard piece balsa portion trailing edge epoxy spruce portion spruce cap rear IE absolute necessity thin airfoils today shaping notch TE before assembly Pin LE TE bottom sheeting place jig Position plywood root ribs tack place epoxy Note best results come building center panels end end Tubing cut two after complete assembly wing Now glue main ribs allow dry Using straight edge mark cut notches top spars Install top spars sheeting etc Allow dry still jig After thoroughly dry remove wing jig same bottom Next add webbing spars remainder sheeting cross ribs cross ribs cut slightly oversize sanded shape after assembly airfoil block tips can now assembled jig leading edges straight Due taper airfoiled jig will automatically build required amount wash out Dihedral angles may sanded /4 top ribs propping wing up desired angle sanding flat sanding block band launch glider style Finish sanding entire wing 400A sandpaper point apply total five coats 60-40 dope entire struc ture serves dual purpose First insures tissue will stick part structure touches sec ondly especially helpful weatherproofing wood Models done way will last several years flying Allow structure dry thoroughly cover Japanese tissue Monokote does give proper rigidity required zoom launching plus fact just too slick slick surface definitely hurts glide Bob White using flatner dope roughen up flying surfaces obvi ously successful attempt make air stick airfoils better bottom center panels should double-covered help cut down punctures Note dont remember seeing single airplane World Champs Monokoted thats 3 events Apply several coats dope allow dry thoroughly Add March1976 45 rear end showing built-up fin rudder stabilizer popped-up position Nordic A-2 models hard get Out strong lift hence severe pop-up angles Photo taken during launching Note line attached right wrist mono filament hangs free lies ground Al tangle free Tricks trade NO OCR TEXT turbulators set up cure finish rest model Stab Rudder Carefully select wood rudder/fin stabilizer Lightness virtue dont build too flimsy hear talk 7- 10-gram stabs people just turn green envy stab light just necessary 1975 World Champions stab weighs al 12 grams recommend building substantial stab 10 12 grams can make up extra weight elsewhere tail end built-up rudder can save 2 grams built properly wood rudders stripped sheet Use 4-lb stock possible After construction coat entire rudder Hot- Stuff will yield rudder extremely light yet very tough Coat framework rudder stab three thin coats clear dope cover Japanese tissue About three coats dope over tissue fine Set aside allow cure Fuselage want build all-out serious model have access materials making large diameter fiber glass tube built-up balsa spruce tail boom best way go can built much easier rolled balsa tube ones built turned out extremely stiff much fiber boom built-up booms stiffer also 4 6 grams lighter comparable length fiber tube Cut sides tail boom stiff light 3/32 sheet use C grain cause thats what use almost everywhere Make sure both sides match exactly Sand sides taper 3/32 thick front 1/32 extreme rear Pin two sides flat board add square blocks geodetic bracing avoid excess pulling especially excess weight glue build-up entire aft end ships rear wing back built Hot-Stuff Build-up tail boom separate unit After front end constructed certain stage boom just plugged place epoxied sure make provisions braided steel auto-rudder cable front end fuselage relatively simple Using template shown cut out main keel ood sides 1/16 plywood Two /s ribs epox ied add support wing wires use K&B microballoons 5-minute epoxy fill around two /8 ribs make other fillets use Cerrabend ballast because weighs almost twice much lead has much lower melting point can obtained larger model train shops use ballast model trains need lot weight small area finish fuselages follows Apply two three coats clear dope boom cover Japanese tissue tissue gets three coats clear dope front end gets three coats lacquer sanding sealer tail boom forward Allow dry thoroughly sand flat 320 400 sandpaper lacquer seal er very easy work yields ex tremely smooth surface paint over use white spray lacquer color dries quickly especially easy work Much white epoxy used past Allow lacquer dry thoroughly Hook up auto-rudder DT lines install timer tow hook etc Flying Make few test glides insure CG incidence close Re member will need approximately 3/32 up tail due turbu lator strips wing new circle towing good way start off make first few flights tow hook unlatched Simply tow model top notice what rudder adjustments should made produce straight tow After model towing straight due wash-in right wing certain amount left rudder may required produce straight tow dont worry normal Set latch attempt circle model Due excess drag tow line rudder setting approximately 250 required turn model presently am using Russian towing method ie 50-lb test monofilament no tow reel Slack line taken up reeling line hand-over-hand using hand-over-hand method model can also pulled quickly top set up circle setting up circle pull model over head slight ly over front Pull nose down let go model will stall quickly turn about turn should tight possible spinning spiralling down lift encountered Always sure have enough slack line turn can made tension line will need con tinned page 95 / grace soaring birds found Nordic flight Dons hook starts moving 48 lbs pressure releases 7 lbs tension March 1976 47 Front end Hyperion showing neat stallation Czech tow hook Sellig timer Hardware Jim Crockett columns Hyperion Mk Vby Bob Meuser include such sources under head Bob Uguccioni mailed news releases area newspapers well publishing event week ly booklet distributed throughout entire resort area RCers Aeroguidance Society Endicott New York pylon racing group Harrisburg agreed help us show Everything geared October 18 1975 100 pm As luck would have time year rain Frantic calls regional flight service Wilkes Barre 700 morning re assuringrain entire day prepara tions cancelled flying guests out town called food refrigerated frozen new advertising campaign started regear rain date October 25 1975 Advertisements ran local paper during rain-date week stating Red Baron caught cold pre paring fight Snoopy recovered battle Thursday rain-date week rain date being Oc tober 25 1975 everything set weather forecast good weekend luck would have forecast changed Friday evening plagued fine mist during early Saturday morning hours Again called flight service station Wilkes Barre report called rising ceiling no rain cells area Winds light variable early morn ing fog drizzle should cleared noon plowed ahead prepared show eating area moved inside rain-soaked cooks prepared hotdogs hamburgers charcoal hearths PA system set up hangar away flying area announcer Duane Walck could see comment aerial maneu vers rock group Reign also set up inside hangar protect electronic gear As 100 pm neared people helping preparation performance show present Joel Samuelson president Po cono Modelers Chairman Air Show paced back forth hoping break weather Surprisingly people started trickle in light rain 130 started show ap proximately 150 200 spectators rain didnt clear until 300 afternoon Don Hewlings opened show flying Bristol Bullet over strip dropping official bicentennial flag followed RCjamboree R C Noll took off biplane pulling banner saying Wel come RC Fans show underway weather showing no signs clearing People would have come children stayed home lot honeymooners presume decided stay indoors due inclement weather R C Noll continued show flying Jet Star deBolt Acrobat Findecker Ralph Jackson turned spectacular scale flight YAT-28E also flew pattern Tiger Tail Dick Allen sliced through mist Tiger Tail Taube Sopwith Camel Pup Hank Farrell did snap rolls original biplane way should pub lished Model Aviation shortly Gary Booker flew deHavilland 10-F During ribbon cutting part show Don Hewlings clevis break turn spiraled totalling plane brave wet kids show thought greatest wanted Don repeat per formance glider portion show performed Tom Long flying Monterey Doug Williams flying Hobie Hawk Sterling Schoonover flew pattern Phoenix 6 also test flew Ugly Stik part aerial dog fight Because mechanical problems Ugly Stik decided use ship dog fight Allen Conklin flew eight-foot Aeronca Carl Stengel darted through sky 200 Quickie racer Tom Lilli flew original pattern Sweet Stik times planes seemed disap pear clouds Control-line performances ade quately handled Jim Bush flying stunt pattern Ken Sarer performed brilliantly carrier demonstration Cliff Hunt flew original adaptation gyrocopter As can see entire show devoted World War planes ever respectable number beautifully designed detailed scale planes added extra touch World War theme besides aerial dogfight between Red Baron Snoopy pylon racing teams control-line combat teams never did show because inclement weather During intermission live music provided Reign real hot rock group Poconos Door prizes donated various merchants given lucky people correct number grand prizes two vacations two Birchwood drawn before main event main event announced theme song Red Baron Snoopy piped through PA system Snoopy took off flying gracefully air yell ing taunts mean Red Baron Red Baron never did get air until Snoopy almost out gas Baron engine trouble Snoopy won default tremendous success first effort large part ex pected crowds never came because poor weather did come en joyed afternoon Free Delta Darts balloons given children people walked away valuable door prizes well greater apprecia tion what airplane modeling about clubs looking forward next year bigger better air show plan hold earlier year because weather goes well will making national event guaranteed prize money Poconos wonder ful place hold such large show Red Baron Birchwood looking forward revenge flight Hyperion/Cha ncey inntiniw4 aae 47 practice will automatically know much slack line required complete turn will need learn pull tension proper point cir cle build up speed launch etc Because stretchiness monoMarch1976 95 Rain Show/Samuelson continued page 37 Hyperion continued FULL-SIZE PLANS No 133 No 134 No 135 No 131 Gee Bee Model V 40-powered RC stand-off scale great old-time racers No 132 SwissWW II Fighter 45-inch CL scale-type sport model 29s 35s Jumbo Scale Douglas 0-38 large-size rubber-scale model biplane excellent duration Callisto superb Standard Class RC sailplane also took Nats first Hyperion Mk V Don Chanceys classic Nordic A-2 competed US team $500 $650 $600 $400 $275 Hinnents F-5 ultimate maneuverability smoothness 80 Pattern iob has all $450 Short Seamew 40-powered class i carrier model good prototype lends itself innovations $300 French Wench Free Flight classes 1/2A 049 051 fully tested design $225 Kioud King 15- 19 RC Old-Timer Free Flight based upon 1938 record breaker FF $400 Wiley Post Biplane Ntite durable scale design either rubber tail wagger Ipulse rudderlS225 Harold Ruarks Sportsman RC cabin iob pretty smooth lines 40 powered full-house $450 Vought Kingfisher semi-scale fully stuntable CL model Les King 25 35 engines1S450 Aeronca K 24 wingspan rubber Indoor Scale old-time lightplane Its done 90 seconds $200 Electric couldnt done Dick Sarpolus Astro 25 RC lob performs pattern $375 Bill Fuoris Quarter Midget House Balsa design modifications faster times $300 Zipper latest CL Scale Racers John Kilsdonk lob must racing fans $175 Max-a-Million fleet free flights problem good A/B FAI $375 5neat Sport RC glider simple lob can flown engine $275 Cessna 150 Acrobat Step up Half-A CL iobs 09-powered semi-profile easy build $275 Ernie Violetts OH Comet CL Scale 1974 Nats first-place winner classic twin $900 Niris An AC pattern mb takes advantage best existing criteria $400 Electra-Lit Hal Covers contest-type free flight VTOsHytork electric motor $150 Novice simple beginners A-i Nordic constructed entirely sheet balsa $150 GollyGeeWhiz Dan Rutherfords simple Half-A powered Combat iob turns dime $150 Four Beginners Too basic RC trainer 09 1 5s rudder elevator motor controls $300 Cathexis Dave Parsons FAI FF has auto-elevator rudder prop brake $450 Gremlin Sturdy acrobatic RC biplane flies well 35s up 60s $300 Hot Wood Twice Nats winner Rocket all-balsa Jetes-powered iob $100 4-Bits 40-powered RC 500 Club Racer has winning ways Good sport too $400 Semi-Pro Contest-winning HL glider has pop-up tail dethermalizer $100 HeIf-Korda rubber John Oldenkamps 1/2-size all-balsa Old-Timer $175 Hooptee MK Ill John Kiladonks CL Rat Racer involves latest state-of-the-art $175 SAC Drone Astro-lO electric-powered 80 scale AC powered glider $400 Komet CL 1/2-A profile semi-scale profile fun flying Mouse Race $200 Rebel Update famed deBolt RC kit Rudder/Elevator/Enginefor 15s $275 Altair Class A-B Free Flight conversion data other classes $400 -- le numbers plans wish order STATE 101 107 113 119 125 131 102 108 114 120 126 132 103 109 115 121 127 133 104 110 116 122 128 134 105 111 117 123 129 135 ZIP Price includes first-class postage Send check money order payable Model Aviation AMA 806 Fifteenth St. NW. Washington DC 20005 filament model can tugged pulled prematurely unlatching hook same hook tension can flown conditions Starts moving 48 lbs unlatches almost 7 lbs stretchy line makes thermal flying much better non-stretch line should used calm no-lift situations Conditions should compensated changing towline re-adjusting tension towhook real reason accidentally coming unlatched lack practice wont try explain details circle towing Most wont make lot sense anyway until youve tried have questions feel free ask Best luck model remember absolutely no substitute practice Practice until towing second nature thing should have worry about line finding thermal WANTED ideas happenings hints/kinks howto sketches photos news etc Send colum nist category concernedat address shown column photo idea printed Model Aviation will pay $5 contributor ADVERTISERS INDEX Ace Radio Control Inc77 Aldrich Products Inc82 Americas Hobby Center Inc86 Andrews Aircraft Model Co84 Bantam Precision Products Inc Cleveland Model & Supply Co80 Coverite81 Dept Transportation FAA94 Du-Bro Products Inc85 EK-logictrol93 Fox Manufacturing Co91 Carl Goldberg Models3 Grish Brothers77 G-S Products Corp Intl89 Paul K Guillow Inc83 Hobby Hideaway83 JASCO89 Kraft Great Lakes Inc80 K&S Engineering82 Midwest Products91 Models West Inc88 Peck-Polymers90 Polks Hobbies85 Progress Mfg Company84 Satellite City95 Semco Model Engineering78 Sig Mfg Company1 Sterling Models Inc90 Sullivan Products Inc86 Tom Sutor Trophies80 Top Flite11 VI Products81 Weak Signals R/C Club92 Westport International Inc87 Williams Brothers87 World EnginesBack Cover 96 Model Aviation No100 No101 No102 No103 No 104 No105 No 106 No107 No 108 No109 No110 No 111 No112 No 113 No114 No115 No116 No 117 No118 No119 No120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 No 128 No 129 No 130 100 106 112 118 124 130 Please print carefully NIAMF STREET CITY