NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll
Edition: Model Aviation - 1980/08
Page Numbers: 14, 15, 16, 17, 18, 19, 103, 109
NO OCR TEXT NO OCR TEXT less altitude flight would General Description Pegasus 166 span thin wings toward tips two 67 long 1675 sq wing area Ipercent polyhedral break another tail design wings four separate panels percent two tip Stretching tip joined together spring steel blades panels would enhance scale-like flight fully sheeted except small portion appearance penalty difficult underside tips center sections spot landings model shown rock equipped generous flaps may steady modifications carefully thought reflexed raised up negative angle give out should too risky greater speeds Large spoilers operated Wed smile too bird likethis created furtherStans questforhigher 1SF requirements aircraft capable setting altitude distance duration records Forthe experiencedhe discusses possible variations separate servo give safe descents high lift flaps spoilers operated inde pendently control stick transmitter return springs removed stick allow positioning remain hands off built medium-weight balsa gener ous amounts epoxy alaphatic resin glues original model came out fully-assembled weight 160 ounces believe lighter model would need Phillips penetrate well weights 145 ounce range lighter model wouldnt quite rugged Dont skimp main wing spar decide try lightweight Actually model will thermal Wearing woolly hat scarf chilly day Stan poses Pegasus give vivid impression its configuration well light lift FAI limit 176 ounces 11 pounds flown accurately smoothly Aerodynamics design approach con servative relatively thick wing section chosen strength stability hands off leading edge relatively sharp stalls arent abrupt Camber about 4% tip washout help avoid tip stalling trip strip turbulator located span-wise high-point about 38% strip simply automotive tape Wind tunnel tests airfoil Emil Martinek SOAR member confirms high lift low drag wide speed range flapped section turbulator strip appeared help have Editors Note grateful have opportunity publish excellent design truly outstanding article Anyone interested RCflying willfind absorbing readingeven sailplanes dish thats case skip construction sure read phenomenal conclusion flying techniquesfor rare insight world super soaring 16 Model Aviation have anysense oneness air feeling fortligflt toritsoWrl sake sailplane supreme RC craft Wheeling silent wings white speck against blue touches soul Forthe realistic sharp-eyed pilotsamong wed guessyou reallyare looking attheangleof towline yet tried model tail surfaces relatively thick give good tail volume provide lots stability control slight penalty drag smaller thinner hori zontal stabilizer would choice modeler interested all-out cross-country flight CG shown plans probably far rear may wish try balance point main wingjoiner will give greatest stability highest altitudes visi bility becomes problem rearward CG will give best L/D greatest speed Any wind noise may isolated eliminated sealing noisy gaps celluloid strips x 020 attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement use such strips spoilers flaps rudder result model almost totally quiet high-speed flight think strips could covered low-temperature films match covering colors However may discover careful workmanship will yield model quiet such fixes Regardless wingjoint fuselage sealed plastic tape structural well aerodynamic reasons wing tips horizontal stabilizer also taped assembly use 4-mil plastic tape bulk purpose matching colors pleas ing appearance T-tail configuration familiar full-scale soaring fans now almost modem 15meter design equipped design yields effective rudder action has practical advantage being up out way off-field landings models long tail moment arm gives arrow-straight launches relatively quick response turns made should happen ground loop landing model flips over hate admit has occurred few times strong fin protects rudder damage usually would occur conventionally con figured craft Performance Record first Pegasus flew LSF Level IV qualified LSF Intemational Tournament 1979 contest placed 12th overall combined duration speed out 92 contestants 5th overall duration 4th Unlimited duration contest longest distance flight far Pegasus 14-mile attempt Great Race IV model has accomplished thermal duration flights two hours plus once over three hours now holds National Soaring Open Unlimited records 68 miles Undeclared Distance 9/3/79 Duration Thermal Duration 2 hours 7 minutes 41 seconds held Altitude record briefly 2200 feet Construction Since model beginner will detail construction However few points bear watching Wing Construction wing spar should accurate flaw construct spar box installing wing blade joiner boxes before closing spar box blade boxes tack glued epoxied position correct completed center section box spar glued down Onto lower sheeting shimmed up assure ~Phillips entry should assem ble both spars once using single wing blade join both wing blade boxes assure mutual alignment during critical step Tip assembly conventional ribs stack-sanded tip blade boxes installed August 198017 Wings fullysheetednote largeflapand itsconstruction Stan eliminates wind noise seaiing noisy gaps celluloid strips attached cyanoacrylate glue leading edge gap overlapping rear edges allowing free movement Wind-tunnel tests confirm high lift low drag wide speed range flapped section Text discusses lightweight version wing made four panelsjoined steel blades shown flap drive wire accurate shownpoint note strength blades Since model beginner advise advanced people glass fuselage main wing blades wing blade boxes fuselage blade box canopy control cables available author Wing MonoKoted black dark blue underneath visibility flap hinge line completely sealed clear plastic tape leave underside smooth setting tip polyhedral angle may find using 5-minute epoxy tack blade boxes place setting angle will eliminate possibility making major error point Make Certain build 4 tip washout gluing top sheet Covering MonoKote preferably black dark blue underside help visibility flaps hinged according builder preference MonoKote fabric plastic etc important point seal hinge line completely leave underside wing smooth used clear plastic tape Fuselage The fuselage available author main wing blades wing blade boxes fuselage blade box canopy control cables fuselage epoxy-glass making assembly repair relatively easy fuselage supplied control cable tubes already installed eliminating tedious aspect construction Flap hardware assembled soldered place before wing blade box epoxied Adjustments flap angle can made after complete assembly can manage get thin soldering iron fuselage past wing blade box Stabilizer strength component should compromised search light weight model will experience high aero dynamic landing loads keep strength high Construction alternatives indicated plans original model used bent strip construction may prefer conventional ribs capstrips Total weight should about five ounces joiner wires Rudder This part takes lot abuse during landings recommend strong hinge show hinge tubes epoxied glass taped place hinge has never failed hold Alignment Mount stab perpendicular fin after drilling hole ID brass mounting tube Epoxy tube place solder retaining washers side fin Finish additional epoxy over washers assuring proper alignment fin wing center sections wing blade box tack LA AROjjjj 4 T FE wit ASEX LW C itosi TAPE PROTECT @IOETE zZIZL c2IZ27zz ~5M05TER TEMPLATETPRT MASTER TEMPLATE 0$ TEOTO PP MM PMM TOM PEWLII Lw-,-- ~AMPApt-PEA mitT EITY glued place 5-minute epoxy roughen surfaces fuselage sandpaper before gluing Suspend model between backs two chairs sight views until satisfied angles true complete rein forcement wing blade box Radio Installation use large rugged servos KPS-15s Installation bulkheads should sturdy glass tape epoxy Dont make nose weight installation permanent may wish use extra-large battery packs long flights installed canopy weight should removed nose keep balance point shown flap throttle stick spoiler connected same stick spring removed allow in-flight settings remain hands off Finish I recommend white lacquer finish fuselage reflect heat keep tail boom light weight possible underside wing stab should dark possible good visibility under variety conditions leading edge wing wrapped reflective chrome mylar tape gixe additional sisibility cues limit sight Accessories The Thermal Sniffler available Don Clark P 0 Box 117 Kensington MD 20795 virtual necessity attempt ing cross-country altitude duration flights also big help assuring maxes during contests Installation within fuselage near CG recommended may also wish experiment various harographs altitude measurement Replogle barographs excellent bulky use altimeter/barometer appeared Jan 1976 issue Mode/Aviation Heavy-duty battery packs may assembled alkaline -D cells will fit special canopy purpose total pack will weigh about 20 oz nose weight should removed keep balance appropriate point pack will allow 8-hour extended cross-country flights made complete confidence Flight Instructions first launch flight model size investment can K V 18 Model Aviation Panel bottom yet top-sheeted revealing pushrod runs Sheeted panel top shows opening large spoiler long tail-moment arm gives arrow-straight launches relativeiy quick responses turns made FULL-SIZE PLANS AVAILABLE SEE PAGE 128 SPARS -47 TOP SNEETROD OMITTED FEB CLEARlY l/R PLACEEARS 455 544 -I/IA PLY1/16 SEBSAREE ItRSDLSA SIRS DIR PLY SPAT SIRS / BUILD Es I/A OP WASEOJY ENTIRE TIP LJRR SARPACE SHEETED WITH LIOPT I/IAESIJHEDI RAISE TIP 33I4 THEN EPSAS 5AEB ROLES TO PT WEBS vrD154% SlUR SF5555 SEREL LDLWRBSS SWETS FROM EASES SALA RE SAESSDEe AADESSDP CA WRAP 255 ZAPS BODES SIRS WADS RARE 5AA=AI S EPOR ELm F-If ADIXOtRITtPA -1 IHl S4 PM ASSE SIRELERSER ALAIRAJA SASSEL PARS AA rADSSDADILOT _DE CiASDAAEAAREPOSEPA DES 454 IE /\MHV LI / LSSSRSRSAE PABSESPA SEAR DSSSESSAEIPA AIDES DIR SIRS Bill CAPSERMS EORSESEIOSRLD RDSDR ARE VIRIDD SESIPS SEMI ASER BRASS 5-1552 LD IDA $AXTBRAS $4 OPIAESSJ EA EDREODS BEES 5CR ISAIDS.SIR SPRUCE SPARS US BALSA WEBDDE SPDEARRASIAAARAFRRDGESEMR ADDOMEEGE ROR $4IDS BALSA SHEErDATE AIRS AELYCRI GEDTWRPABSPDPAOBS VS BANE RB SPACESJ SEA RRSEPARS S XSER lEA ALASABESE BARBS FLAP IRRE D ACES L/D FOX SIESRSAEDA 1—WRCE WEATHER LEAJPAIP REST L/O LAIRWA SLOW OLIDE r.~L.ARRADRSBSL EDADEESJAES ABS SPARE IRS BA SUBS D SAPS SO BA ASSEER SUFA SOD SISASAmS BIBS WAS SB lEA RBSB ARSA SPA ROBE RS*DEin WED SAGESIE LW DADRI URESEB F RB-RIBS ERRAC S RACE mEBASAS ABSEER RRORS ERRSEISFSAA ALURSABS EROS ID$4 LAME quite exciting would recommend seek Out experienced large-glider flier help first launch Use strong reliable towhook use Rocket CitY Airtronix will also hold up also certain towline will hold up under pull test before take first flight recommend 130-140 lb test line best 100 lb will also hold up new unfrayed although back-stick pressure mid-launch will almost certainly break Use about 15 20 degrees flap low wind less flap wind blowing see plans Pre-load winch line about twice tension would use 100-incher smoothly throw model winch tension continues build pulse model rotates climb attitude model will track straight true get off side steer back rudder use forward down stick have real problem hands might happen try launch lots flap high wind have thrown model up Out break line during first few feet launch may choose loop model out land normally Near top launch should reduce flap build speed release line climb forward over top Keep flaps neutral range experiment control trims get straight flight attained may search lift altitude Before land should try full range turns banks spoiler prepare landings first few flights may feel need entire field land truth may Land straight ahead once have set up approach Slow model flap spoilers calm air use less flap wind higher Spot landings during contests entirely within reason 80 scores common once handling characteristics become familiar kind flying may lead some stress cracks around rear canopy opening extra reinforc ing glass tape epoxy will give added strength will need minimize effects abuse wont see full-size glider pilots landing planes way Thermal Search should rely observing other planes launch area thermal sensor well perceptions air flowing past you wait launch Sudden changes air temperature calming wind direction changes insects birds flying over good indicators lift passing over head best fliers manage launch directly kind liftsandbagging its called Turn immediately after launch height attained should able climb bubble breaks loose rises Alternately dont catch lift right off top launch may search upwind 45degree angles launch line wait telltale rise deflection away strong lift Circle around enter core keeping flaps center range down-flap will lead snap-stalls sudden strong lift encountered Cruising thermaling neutral reflexed flap will enable search larger areas field down-flap However slight amount down-flap may give ability slow down float within light lift encountered calm air such early morning around sunset Altitude Gain key long-distance long-duration well course altitude key maximizing altitude gain center within strongest portion lift smoothly circle within area maintain ing enough back trim stick assure maximum rate climb thermal sniffler really helps determining amount up-stick will yield Continued page 103 August 198019 Half T-tail stab place showing joiner wires Fuselage finished white lacquer reflect heat keep tail boom light Wing LE wrapped reflective chrome Mylar tape additional visibility sight limit Several radios interest helicopter flier display Futaba showed own 5JH has state-of-the-art features Airtronjcs now own radios Airtronics radios manufactured Sanwa have interesting features well economy prices standard Airtronics 4and 6-channel transmitters feature exponential throw rates servo reversing wide range servo choice Airtronics also importing Sanwa Custom Series radios helicop ter radio features dual rate elevator aile ron tail rotor throttle tail rotor mixing digital stopwatch helicopter showing static competi tion very sparse year Nontheless two models entered highest cali ber Hirobo 60-size UH-1E Iroquois won top honors attractive helicopter finished standard Marine markings second place helicopter DC Labs Bell 222 finished blue prototype colors Both machines very nice outside demonstrations very ex citing year show attracted audi ence over 2000 people American RC 13-year-old Curtis Crocker demonstrating both Revolution 1 Commander John Sinione demonstrated aerobatic capabili ties Commander well flying under bridge third year row HellCenter West John Gorham demonstrating Cricket well helicopter aerobatics Heliboy Richard Keppel flew both Helibaby Heliboy Larry Jolly flew Schluter Bolkow BO 105 finished German military colors Last certainly exciting Ernie Huber flew Kavan Jet Ranger Ernie has always right front helicop ters have progressed year certainly floored crowd nonchalantly turned Jet Ranger inverted flew over lagoon Quite show Ernie. yed hope come back next year speaking next year dont come out visit us MAC Show usually last week April first week May weather great flying exciting Come out join us can what like besttalk fly RC model helicopters Pegasus/Watson continued page 19 rate should widen circle rise assuring strongest lift losing altitude due banking steep angles Should very tight turns necessary may prefer use slight amount down-flap Always remember keep flying speed up aircraft efficient higher speeds may used Once high wish leave thermal return upwind using reflex neutral flap clear down-drafts may find prefer fast cruise once learn recognize lift encountered Cross-Country Flight As long have enough altitude may convert speed Enough altitude case means enough transit thermal thermal enough left over margin safety Remove frequency flag transmitter antenna find com fortable position open truck convertible van car proceed safely possible along country roads pausing work lift necessary ability reflex flaps move out will really pay off As speed builds up should able use down-trim losing altitude Pilots call getting up step takes bit experimentation find right combination CG flap angle find Believe youll know model will become especially responsive rudder will double its apparent speed will seem lose altitude course will sooner later youll come realization youll have work some lift again However some conditions youll able cover mile after mile merely slowing bit climbing lift beginning dash again Its kind flying will have saying what soaring about Altitude Flight should have thermal sensor aid altitude gain finding safe rate descent once wish come down will find model visible under white clouds cumulus signal best lift Keep model directly overhead possible visibility Have several helpers keeping watch model real ization type flight offers risk Having binoculars ready focused good idea Aviation weather forecasts useful spotting days cloud base will high enough purposes will find estimates actual altitude gained can sometimes agreement actual altitude gained can often lower estimated because model has drifted downwind haze present have flying blue sky However should easily able fly above Continued page 109 August 1980 103 Tatone MaKes Easy Established 1956 Tatone has invented de signed over 300 specialized model airplane ac cessories often imitated never equalled Watch new itms Tatone products available leading hobby shops See dealer first convenient R DIRECT Send 50 illustrated price information COD VISA MASTER CHARGE accented W IJ3 D J SJ ILl ID IEIeIISJ ER AIR SCREW ANNOUNCING NEW 112A SERIES Accurately Pitched Balanced High Performance Available Through Leading Distributors L liked GIF SERIES standard size engines really going like new %A SERIESI molded same tough glass composite material very carefully pitched balanced 14A SERIES includes 54x4 5Yx4 6x3 6x3i4 6x4 hobby danlar ha tham nnirg about TIVE NO LEAK AND PRESSURE SHUTOFF VALVE PERFECT FOR Smoke systems--anyone plane large enough install separate smoke tank can incorporate super smoker added flying enjoyment Inflight Fuel Shutoffs Pylon Free Flight R/C SUPER SIMPLE AND EASY TO INSTALL valve compact enough mount anywhere -- position requires extra servo operate Du-Bro Super Smoker comes assembled complete 34 neoprene fuel tubing two pressure fittings mounting screws complete instructions CAT NO 255 C 7U 1QJ DU-BAO PRODUCTS INC 480 Banner Bond Wou ondo nos 60084 3000 feet care 4000-ft range present AMA altitude record 3400 feet Unlimited held Jack Hiner World FAT altitude record 4988 feet SOAR club members John Dineen present holder AMA National record 2-meter flight 2050 feet see what could accomplished model size Pegasus Remember accord ing FAI rules total all-up weight model cannot exceed 11 pounds may find does Jack Hiner launching Noon Balloon climbing cloud bases afternoon progresses best way get really high altitudes Locating CG main wing blade safest stable position altitude flight Conclusion Much preceding can applied soaring models have found advice will apply especially large models best suited flying high far thanks go Jack Hiner advice flying model John Dineen help laying up original fuselage other SOAR members cooperation support Last course least appreciation must go both wife mother have over years put up lot mess bother associated hobby yet still capable showing enthusiasm new project takes sky RC Technique/Myers continued page 21 point battery voltage modulation signal Its wired everything switches RF board use wondered antenna would substantially supported situation dont give another thought could use Continued page 112 NORTHERN CAUFORNIAS LARGESTU DISCOUNT HOBBY SHOPI well FUELyou New high film strength lubricantN increased power engine lifeI Hinhst qualily ingredients -entcut I~J I II II II II II II II II IHOURS Monday thru Wednesday 930-630 Thursday & Friday 930-800I L atwday93c600 Sunday 1200-500 J st 1980 109 FUEL jzIfll