see well plane stays out lines needs tail weight increase sensitivity during maneuvers see plane needs Use stopwatch start soon nose weight increase stability Continued page 116 LETS trim new stunt airplane Sup pose get rid usual gobbledygook explanations stick what seems work First thing should check out few things groundbefore consider flying plane sitting table head about foot nose sight over top wing switching eyes trailing edge tip side trailing edge other tip Make certain both trailing edges tips appear same time raise lower head some practice can spot warp much trouble Also time certain stabilizer exactly square wing rudder 1/16 off fix Make certain elevator exact neutral position flaps neutral Roll airplane across paved area should roll straight bend landing gear until does would very embarrassing first takeoff plane comes Next should statically balance plane theoretical center gravity usually about 2 2 leading edge wing root center wing Less same propor tion smaller-than-standard aircrafta Half-A instance personally dont feel establishing tip weight holding plane along center line fuselage watching plane tilt outboard wing very good usually start out too much rather too little tip weightarrived knowing what other planes have used just guess timating Now lets see can get crate air Instruct spotter helper what look first flight 1 level flight wings parallel ground 2 inverted flight wing level 3 inside square loop see about hinging drop ping outboard wing first second corners loop Also will looking comparison between inside outside round loops see plane turns better way other Halt-Breed II byJohn poynter has J i toam wings naps sxaoiiizer ana ejevator Engine ST 46 weight 56 oz Finished Aero Gloss color clear Acrylic enamel LVrI up iu i rlartvigsens Classic Fox 35 Fox muffler 56-in span 568 sq area weight 47 oz Airfoil NACA 0020 Finished Aero Gloss paint Wynn Paul plc Mexican FAI team member Ernesto Cuevas fliesthis Genesis Weighing60 ounces powered Supertigre 46 engine running off uniflow tank rakish looking design July 1979 55 0 LOWEST DRAIN WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition Just fun stick FIRE BALL great engine runs *advanced98 ............ FLASH STARTING 0 UNEXCELLED POWER LONGER LIFE cr11 1 GLOW PLUGS SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JE35EY 07470 Brashers Rotation Station Are exotic planes worth effort next season two will determine way Combat design will go CL Scale/Gretz continued page 54 small point personal preference fact believe person could become just proficient either mode operation learn either just easily got some own specific reasons prefer ring fly Scale high throttle forward handle said part set up first 3-line system years ago became obvious mounted inverted bellcrank inverted seemingly intended almost engine high throttle position would forward control handles throttle lever same holds true mounting upright bellcrank upright throttle-equipped engines know require throttle pushrod move forward open car buretor except Fox engines often have lever both directions other words modeler uses stock equip ment mounts manufacturer intended mounted would almost cases get high throttle moving handles lever forward way noticed Scale fliers doing Nationals order make system work other way must reverse directions somewhere along line As said can incorporate straight reversing bellcrank arm between engine 3-line bellcrank can mount inverted style bellcrank upright upright style bellcrank inverted although know some control rod hookup problems can also simply loosen throttle arm engines rotate 180 degrees top side carb couldnt see possible advantage Scale flying doing things mentioned seemed natural pull back handles trigger get fast throttle seems natural fast throttle forward fullsize airplane automobile use left hand operate lever top handle thus always fly both hands Perhaps real heart personal preferences matter Im wondering other Carrier fliers normally fly hand using index finger operate trigger feel way can operate throttle precisely through stages scale flight competition Scale flying good share point-getting maneuvers done very near low throttlelike initial takeoff run landing touch-and-go taxi During maneuvers precise coordinated elevator throttle use important prefer trigger back what seem agree comfort able position day after mailed reply letter arrived MA sown Carrier expert respected friend Dick Perry very knowledgeably shed some light Carrier fliers prefer control set-up opposite what normal Scale Dick said looks like disagree little way appropriate direction open throttle 3-line system Its certainly no big thing Carrier requirements just little different Scale way forward openis way real air plane builders it works great two-handed flyingthe way Scale fliers Ive seen Carrier fliers little different generally one-handed few excep tions can fly bigger circle low speed hand use two hands high speed left hand support onlythe right index finger still handles throttle 5075 lbs pull pull-to-open throttle much easier keep open push-to-open rig one-hand operation low-speed throttle action also natural back pressure opens throttle up applied Also properly rigged up elevator condition against stop lines really loose will automatically open throttle bad situation total airplane pull about two pounds So have full story Two different methods two unique events As can see could go on meaningless debate about merits method lets just conclude devoted pilot can get satisfactory results either way know years RC has its Mode throttle right stick Mode II throttle left stick fliers tongue-in-cheek word-war about best Perhaps should divide up two-fisted lever pilots handed trigger pilots Are crazy Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 55 engine catches After plane air fly eye level approximately five feet off ground Have spotter better look see out board wing up down level Have spotter stand downwind facing can see plane coming going have spotter move counterclockwise 90 degrees around circle can watch plane downwind side upwind side Spot plane coming going position looking high low wing time pilot can look excessive yaw observing landing gear inboard gear looks front outboard gear plane goes around circle might too much line rake engine offset Going inverted flight first time new plane always thrill know engine tank setup worked perfectly last plane yesterday always couple large inside loops first downwind try elongated round inside loop long inverted part top what heck go start inside loop inverted flight Now get spotter again check wing high low outboard tip something seems wrong try level upright flight again followed inverted flight right away get spotters feel ings Since cant stop now anyway unless plane flying badly further experiments would dangerous lets go series climbs dives purpose see plane appears nose-heavy tail-heavyfor style offlying plane climbs dives very easily jerk may tail-heavy require nose weight plane seems locked groove level flight probably have too much nose weight may also experience hunting level flight means ship wants climb dive gradually time have keep minutely adjusting handle keep plane level flight seems have mind its own during level flight have keep adjusting wrist/hand/handle maintain constant alti tude quote Olympic Mark VI man Bob Gialdini Old stunt planes dont hunt ask Its because slop slop elevator movement 116 Model Aviation regard independent movement flaps Old planes have elevator horn bushing worn enough permit siop bushing elevator flap horn reamed out larger drill file elevator has much 3/16 play up down flaps motionless plane already built dont want cut 1 8-point finish Tough want fly look Now should try three inside round loops regular size followed three outside round loops see easier other Actually gut test inside-outside turnability comes inside outside squares rounds feel pretty much alike may ballpark Next havent used up seven minutes stopwatch try inside square spotter should standing about 20 feet off circle tangent downwind side facing front plane can look directly outboard wing first corner square pilot should also able see wing drop well spotter Also first couple squares should see plane has line tension throughout maneuver same tension top maneuvers bottom Now should about ready level off wait engine cut first trimming over comes very important part first flight As suming have perfect mel tanks tnat gives hurst oi jean lap new panel spans new moment arms cuts off entirely maintain level ready experiment flight about seven feet off ground until Now level flight wing up engine cuts Immediately notice what level flight same outboard wing happens during first part glide down inverted flight have path Does plane want climb dive warp outboard trailing edge and/or Does groove gradual descent Does flap down relative inboard trailing immediately buck up stall slightly edge and/or flap need bend terrific sense lightness outboard flap up relative inboard flap linesmore just result Chris Lella suggested lowering leadouts engine cutting finally can fly rather impractical since would onto ground landing mean significant operation tip does bounce stick down leadout fixture Lots stunt planes first flight over have lot flying tweaked flaps will items consider First level flight fly well wing down level flight wing up down B excessive yaw C up inverted flight outboard line tension D groove ortouchy response flap needs bent down relative E hunting Second inverted flightwing inboard flap up down Third inside outside round outboard flap down level flight loops turns easier B line also down inverted flight tension Fourth climbs divesnose probably have too much tip weight heavy tail heavy Fifth inside square should remove least ry hinging B line tension atthetopofthe again Ive tried purpose ittakes maneuver Sixth glide path touchy about oo much make wing controls smooth descent B landing drop common occurence wing abilitiesbounce kiss up level flight also up inverted next word advice after flight need add tip weight deciding what to trim plane ncrements always try thing time Let Inboard roll and/or outboard roll can emphasize change flight also function vertical center-ofmeans decide move leadouts gravity can also compounded back ing else plane dihedral trouble dont change props line lengths add tip cant much adjust vertical CG weight same time say after plane builtshort major will take lot time Yes does surgery leadouts have new design new dimensions saw inboard landing gear July1979 117 FOR THE SOARING BUFF sup ertape superwings lt applies stidcey brushing masking Portfolio lts stronger typical R/C building materialEverything need know create lt weighs 1 gin per sq ft building area lts 0005 thickyour own super-performance sailplane lts ready instant apply itA completely illustrated difinative work 20 pages packed technical data charts Olts quickest efficient method diagrams step-by-step instructions applying balsa greenskin other million $ worth information skin foam wing cores Plus dozens interested obtaining winning edge other great uses Try it in sailplane performance Hi Johnson 3/8roll $479 1roII $795 2roIl $1595 ALLROLLSAAE2160 LONGOnIy$150 SUPERWINGS 11015 Glenoaks Blvd Pacoima CA 91331 Tel 121318994312 J Features plated lit x 4 cr steel support mem ber plated 332 manganese bronze moving parts 05g Ii aluminum anchor strap simple anchor ing stake turf spike asphalt scres eyehalt 6-32 T famished hoard mount ing 25 lh capacity sill pall apart 120 ibs spring biased restraint am throon open position release huilt lock pre otots accidental release MODFL COMPONENTS 905 6 6 ttGfbt OR 9 riding noticeably ahead outboard gear level flight particularly approached upwind side circle may have too much yaw will need move leadouts forward and/or reduce some offset engine Line tension relative item Lots us fliers like feel chunk lead out pulling arms off others like just slight tug lines Personal preference should guide plane hard break level flight other words wanted groove took lot effort pull up may have too much nose weight plane may just nose-heavy Solution take out some nose weight switch lighter muffler try plastic spinner instead metal plane very touchy level flight actually hard control may tail-heavy need nose weight ncrements Ive already worked over what hunting plane Get sharp razor make incision under elevator side washer soldered onto push-rodhope remember side Most us insert push-rod left inboard side plane looking top supposition washer falls off centrifugal force will keep push-rod horn Good luck may still have cut other side such tight fit under stabilizer cant get push-rod out bearing cutting away part fuselage side Next consider inside outside loops whether plane turns easier other way seems favor way may want try shims under engine Shims can either washers easiest small pieces aluminum brass have cut out Before making decision better see plane turns inside outside squares ultimate sometimes final answer Since article getting pretty long Ill have deal line tension along other points maneuvers next month Prop selection can also affect line tension could have whole article Les McDonald Now lets quickly look glide path plane wants drop tail soon engine cuts its probably tail-heavy continues groove flies right down ground may nose-heavy plane goes extremely light lines after engine cuts may have leadouts too far forward too little tip weight plane bounces after good glide path either gear too springy its too far forward Try getting axle main gears line up leading edge wing viewed directly overhead information PAMPA stunt write Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Navy Carrier/Perry continued page 56 cruise under 40 mph 3-view draw ings show configurations unu sual aircraft 60 C- Iii u-i Q50 Li] u-I u-I z -J 40 30 20406080 SPEED MPI-1 Back 1966 American Modeler published set formulae developed Bill Netze band determining line drag leadout location CL models Roger Edwards NCAC Chairman has applied formu lae 3-line systems use Carrier has developed graphs accom pany months column Line rake angle amount leadouts swept back center-ofgravity CG shown function speed model weight As weight speed decreases line rake angle must crease compensate charts take guesswork out determining leadout loca tionassuming CG weight speed can reliably estimated varying opinions about movable leadouts interesting note little movement ideal leadout location between high speed low speed typical Class II model change less degree less 03 inch Profile change under degree 0020140 24 r-J 0 28 36 118 Model Aviation talL.. SAFE-LOK LAUNCHER PROFILE AND CLASS F 71Ii 7
Edition: Model Aviation - 1979/07
Page Numbers: 55, 116, 117, 118
see well plane stays out lines needs tail weight increase sensitivity during maneuvers see plane needs Use stopwatch start soon nose weight increase stability Continued page 116 LETS trim new stunt airplane Sup pose get rid usual gobbledygook explanations stick what seems work First thing should check out few things groundbefore consider flying plane sitting table head about foot nose sight over top wing switching eyes trailing edge tip side trailing edge other tip Make certain both trailing edges tips appear same time raise lower head some practice can spot warp much trouble Also time certain stabilizer exactly square wing rudder 1/16 off fix Make certain elevator exact neutral position flaps neutral Roll airplane across paved area should roll straight bend landing gear until does would very embarrassing first takeoff plane comes Next should statically balance plane theoretical center gravity usually about 2 2 leading edge wing root center wing Less same propor tion smaller-than-standard aircrafta Half-A instance personally dont feel establishing tip weight holding plane along center line fuselage watching plane tilt outboard wing very good usually start out too much rather too little tip weightarrived knowing what other planes have used just guess timating Now lets see can get crate air Instruct spotter helper what look first flight 1 level flight wings parallel ground 2 inverted flight wing level 3 inside square loop see about hinging drop ping outboard wing first second corners loop Also will looking comparison between inside outside round loops see plane turns better way other Halt-Breed II byJohn poynter has J i toam wings naps sxaoiiizer ana ejevator Engine ST 46 weight 56 oz Finished Aero Gloss color clear Acrylic enamel LVrI up iu i rlartvigsens Classic Fox 35 Fox muffler 56-in span 568 sq area weight 47 oz Airfoil NACA 0020 Finished Aero Gloss paint Wynn Paul plc Mexican FAI team member Ernesto Cuevas fliesthis Genesis Weighing60 ounces powered Supertigre 46 engine running off uniflow tank rakish looking design July 1979 55 0 LOWEST DRAIN WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition Just fun stick FIRE BALL great engine runs *advanced98 ............ FLASH STARTING 0 UNEXCELLED POWER LONGER LIFE cr11 1 GLOW PLUGS SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JE35EY 07470 Brashers Rotation Station Are exotic planes worth effort next season two will determine way Combat design will go CL Scale/Gretz continued page 54 small point personal preference fact believe person could become just proficient either mode operation learn either just easily got some own specific reasons prefer ring fly Scale high throttle forward handle said part set up first 3-line system years ago became obvious mounted inverted bellcrank inverted seemingly intended almost engine high throttle position would forward control handles throttle lever same holds true mounting upright bellcrank upright throttle-equipped engines know require throttle pushrod move forward open car buretor except Fox engines often have lever both directions other words modeler uses stock equip ment mounts manufacturer intended mounted would almost cases get high throttle moving handles lever forward way noticed Scale fliers doing Nationals order make system work other way must reverse directions somewhere along line As said can incorporate straight reversing bellcrank arm between engine 3-line bellcrank can mount inverted style bellcrank upright upright style bellcrank inverted although know some control rod hookup problems can also simply loosen throttle arm engines rotate 180 degrees top side carb couldnt see possible advantage Scale flying doing things mentioned seemed natural pull back handles trigger get fast throttle seems natural fast throttle forward fullsize airplane automobile use left hand operate lever top handle thus always fly both hands Perhaps real heart personal preferences matter Im wondering other Carrier fliers normally fly hand using index finger operate trigger feel way can operate throttle precisely through stages scale flight competition Scale flying good share point-getting maneuvers done very near low throttlelike initial takeoff run landing touch-and-go taxi During maneuvers precise coordinated elevator throttle use important prefer trigger back what seem agree comfort able position day after mailed reply letter arrived MA sown Carrier expert respected friend Dick Perry very knowledgeably shed some light Carrier fliers prefer control set-up opposite what normal Scale Dick said looks like disagree little way appropriate direction open throttle 3-line system Its certainly no big thing Carrier requirements just little different Scale way forward openis way real air plane builders it works great two-handed flyingthe way Scale fliers Ive seen Carrier fliers little different generally one-handed few excep tions can fly bigger circle low speed hand use two hands high speed left hand support onlythe right index finger still handles throttle 5075 lbs pull pull-to-open throttle much easier keep open push-to-open rig one-hand operation low-speed throttle action also natural back pressure opens throttle up applied Also properly rigged up elevator condition against stop lines really loose will automatically open throttle bad situation total airplane pull about two pounds So have full story Two different methods two unique events As can see could go on meaningless debate about merits method lets just conclude devoted pilot can get satisfactory results either way know years RC has its Mode throttle right stick Mode II throttle left stick fliers tongue-in-cheek word-war about best Perhaps should divide up two-fisted lever pilots handed trigger pilots Are crazy Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 55 engine catches After plane air fly eye level approximately five feet off ground Have spotter better look see out board wing up down level Have spotter stand downwind facing can see plane coming going have spotter move counterclockwise 90 degrees around circle can watch plane downwind side upwind side Spot plane coming going position looking high low wing time pilot can look excessive yaw observing landing gear inboard gear looks front outboard gear plane goes around circle might too much line rake engine offset Going inverted flight first time new plane always thrill know engine tank setup worked perfectly last plane yesterday always couple large inside loops first downwind try elongated round inside loop long inverted part top what heck go start inside loop inverted flight Now get spotter again check wing high low outboard tip something seems wrong try level upright flight again followed inverted flight right away get spotters feel ings Since cant stop now anyway unless plane flying badly further experiments would dangerous lets go series climbs dives purpose see plane appears nose-heavy tail-heavyfor style offlying plane climbs dives very easily jerk may tail-heavy require nose weight plane seems locked groove level flight probably have too much nose weight may also experience hunting level flight means ship wants climb dive gradually time have keep minutely adjusting handle keep plane level flight seems have mind its own during level flight have keep adjusting wrist/hand/handle maintain constant alti tude quote Olympic Mark VI man Bob Gialdini Old stunt planes dont hunt ask Its because slop slop elevator movement 116 Model Aviation regard independent movement flaps Old planes have elevator horn bushing worn enough permit siop bushing elevator flap horn reamed out larger drill file elevator has much 3/16 play up down flaps motionless plane already built dont want cut 1 8-point finish Tough want fly look Now should try three inside round loops regular size followed three outside round loops see easier other Actually gut test inside-outside turnability comes inside outside squares rounds feel pretty much alike may ballpark Next havent used up seven minutes stopwatch try inside square spotter should standing about 20 feet off circle tangent downwind side facing front plane can look directly outboard wing first corner square pilot should also able see wing drop well spotter Also first couple squares should see plane has line tension throughout maneuver same tension top maneuvers bottom Now should about ready level off wait engine cut first trimming over comes very important part first flight As suming have perfect mel tanks tnat gives hurst oi jean lap new panel spans new moment arms cuts off entirely maintain level ready experiment flight about seven feet off ground until Now level flight wing up engine cuts Immediately notice what level flight same outboard wing happens during first part glide down inverted flight have path Does plane want climb dive warp outboard trailing edge and/or Does groove gradual descent Does flap down relative inboard trailing immediately buck up stall slightly edge and/or flap need bend terrific sense lightness outboard flap up relative inboard flap linesmore just result Chris Lella suggested lowering leadouts engine cutting finally can fly rather impractical since would onto ground landing mean significant operation tip does bounce stick down leadout fixture Lots stunt planes first flight over have lot flying tweaked flaps will items consider First level flight fly well wing down level flight wing up down B excessive yaw C up inverted flight outboard line tension D groove ortouchy response flap needs bent down relative E hunting Second inverted flightwing inboard flap up down Third inside outside round outboard flap down level flight loops turns easier B line also down inverted flight tension Fourth climbs divesnose probably have too much tip weight heavy tail heavy Fifth inside square should remove least ry hinging B line tension atthetopofthe again Ive tried purpose ittakes maneuver Sixth glide path touchy about oo much make wing controls smooth descent B landing drop common occurence wing abilitiesbounce kiss up level flight also up inverted next word advice after flight need add tip weight deciding what to trim plane ncrements always try thing time Let Inboard roll and/or outboard roll can emphasize change flight also function vertical center-ofmeans decide move leadouts gravity can also compounded back ing else plane dihedral trouble dont change props line lengths add tip cant much adjust vertical CG weight same time say after plane builtshort major will take lot time Yes does surgery leadouts have new design new dimensions saw inboard landing gear July1979 117 FOR THE SOARING BUFF sup ertape superwings lt applies stidcey brushing masking Portfolio lts stronger typical R/C building materialEverything need know create lt weighs 1 gin per sq ft building area lts 0005 thickyour own super-performance sailplane lts ready instant apply itA completely illustrated difinative work 20 pages packed technical data charts Olts quickest efficient method diagrams step-by-step instructions applying balsa greenskin other million $ worth information skin foam wing cores Plus dozens interested obtaining winning edge other great uses Try it in sailplane performance Hi Johnson 3/8roll $479 1roII $795 2roIl $1595 ALLROLLSAAE2160 LONGOnIy$150 SUPERWINGS 11015 Glenoaks Blvd Pacoima CA 91331 Tel 121318994312 J Features plated lit x 4 cr steel support mem ber plated 332 manganese bronze moving parts 05g Ii aluminum anchor strap simple anchor ing stake turf spike asphalt scres eyehalt 6-32 T famished hoard mount ing 25 lh capacity sill pall apart 120 ibs spring biased restraint am throon open position release huilt lock pre otots accidental release MODFL COMPONENTS 905 6 6 ttGfbt OR 9 riding noticeably ahead outboard gear level flight particularly approached upwind side circle may have too much yaw will need move leadouts forward and/or reduce some offset engine Line tension relative item Lots us fliers like feel chunk lead out pulling arms off others like just slight tug lines Personal preference should guide plane hard break level flight other words wanted groove took lot effort pull up may have too much nose weight plane may just nose-heavy Solution take out some nose weight switch lighter muffler try plastic spinner instead metal plane very touchy level flight actually hard control may tail-heavy need nose weight ncrements Ive already worked over what hunting plane Get sharp razor make incision under elevator side washer soldered onto push-rodhope remember side Most us insert push-rod left inboard side plane looking top supposition washer falls off centrifugal force will keep push-rod horn Good luck may still have cut other side such tight fit under stabilizer cant get push-rod out bearing cutting away part fuselage side Next consider inside outside loops whether plane turns easier other way seems favor way may want try shims under engine Shims can either washers easiest small pieces aluminum brass have cut out Before making decision better see plane turns inside outside squares ultimate sometimes final answer Since article getting pretty long Ill have deal line tension along other points maneuvers next month Prop selection can also affect line tension could have whole article Les McDonald Now lets quickly look glide path plane wants drop tail soon engine cuts its probably tail-heavy continues groove flies right down ground may nose-heavy plane goes extremely light lines after engine cuts may have leadouts too far forward too little tip weight plane bounces after good glide path either gear too springy its too far forward Try getting axle main gears line up leading edge wing viewed directly overhead information PAMPA stunt write Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Navy Carrier/Perry continued page 56 cruise under 40 mph 3-view draw ings show configurations unu sual aircraft 60 C- Iii u-i Q50 Li] u-I u-I z -J 40 30 20406080 SPEED MPI-1 Back 1966 American Modeler published set formulae developed Bill Netze band determining line drag leadout location CL models Roger Edwards NCAC Chairman has applied formu lae 3-line systems use Carrier has developed graphs accom pany months column Line rake angle amount leadouts swept back center-ofgravity CG shown function speed model weight As weight speed decreases line rake angle must crease compensate charts take guesswork out determining leadout loca tionassuming CG weight speed can reliably estimated varying opinions about movable leadouts interesting note little movement ideal leadout location between high speed low speed typical Class II model change less degree less 03 inch Profile change under degree 0020140 24 r-J 0 28 36 118 Model Aviation talL.. SAFE-LOK LAUNCHER PROFILE AND CLASS F 71Ii 7
Edition: Model Aviation - 1979/07
Page Numbers: 55, 116, 117, 118
see well plane stays out lines needs tail weight increase sensitivity during maneuvers see plane needs Use stopwatch start soon nose weight increase stability Continued page 116 LETS trim new stunt airplane Sup pose get rid usual gobbledygook explanations stick what seems work First thing should check out few things groundbefore consider flying plane sitting table head about foot nose sight over top wing switching eyes trailing edge tip side trailing edge other tip Make certain both trailing edges tips appear same time raise lower head some practice can spot warp much trouble Also time certain stabilizer exactly square wing rudder 1/16 off fix Make certain elevator exact neutral position flaps neutral Roll airplane across paved area should roll straight bend landing gear until does would very embarrassing first takeoff plane comes Next should statically balance plane theoretical center gravity usually about 2 2 leading edge wing root center wing Less same propor tion smaller-than-standard aircrafta Half-A instance personally dont feel establishing tip weight holding plane along center line fuselage watching plane tilt outboard wing very good usually start out too much rather too little tip weightarrived knowing what other planes have used just guess timating Now lets see can get crate air Instruct spotter helper what look first flight 1 level flight wings parallel ground 2 inverted flight wing level 3 inside square loop see about hinging drop ping outboard wing first second corners loop Also will looking comparison between inside outside round loops see plane turns better way other Halt-Breed II byJohn poynter has J i toam wings naps sxaoiiizer ana ejevator Engine ST 46 weight 56 oz Finished Aero Gloss color clear Acrylic enamel LVrI up iu i rlartvigsens Classic Fox 35 Fox muffler 56-in span 568 sq area weight 47 oz Airfoil NACA 0020 Finished Aero Gloss paint Wynn Paul plc Mexican FAI team member Ernesto Cuevas fliesthis Genesis Weighing60 ounces powered Supertigre 46 engine running off uniflow tank rakish looking design July 1979 55 0 LOWEST DRAIN WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition Just fun stick FIRE BALL great engine runs *advanced98 ............ FLASH STARTING 0 UNEXCELLED POWER LONGER LIFE cr11 1 GLOW PLUGS SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JE35EY 07470 Brashers Rotation Station Are exotic planes worth effort next season two will determine way Combat design will go CL Scale/Gretz continued page 54 small point personal preference fact believe person could become just proficient either mode operation learn either just easily got some own specific reasons prefer ring fly Scale high throttle forward handle said part set up first 3-line system years ago became obvious mounted inverted bellcrank inverted seemingly intended almost engine high throttle position would forward control handles throttle lever same holds true mounting upright bellcrank upright throttle-equipped engines know require throttle pushrod move forward open car buretor except Fox engines often have lever both directions other words modeler uses stock equip ment mounts manufacturer intended mounted would almost cases get high throttle moving handles lever forward way noticed Scale fliers doing Nationals order make system work other way must reverse directions somewhere along line As said can incorporate straight reversing bellcrank arm between engine 3-line bellcrank can mount inverted style bellcrank upright upright style bellcrank inverted although know some control rod hookup problems can also simply loosen throttle arm engines rotate 180 degrees top side carb couldnt see possible advantage Scale flying doing things mentioned seemed natural pull back handles trigger get fast throttle seems natural fast throttle forward fullsize airplane automobile use left hand operate lever top handle thus always fly both hands Perhaps real heart personal preferences matter Im wondering other Carrier fliers normally fly hand using index finger operate trigger feel way can operate throttle precisely through stages scale flight competition Scale flying good share point-getting maneuvers done very near low throttlelike initial takeoff run landing touch-and-go taxi During maneuvers precise coordinated elevator throttle use important prefer trigger back what seem agree comfort able position day after mailed reply letter arrived MA sown Carrier expert respected friend Dick Perry very knowledgeably shed some light Carrier fliers prefer control set-up opposite what normal Scale Dick said looks like disagree little way appropriate direction open throttle 3-line system Its certainly no big thing Carrier requirements just little different Scale way forward openis way real air plane builders it works great two-handed flyingthe way Scale fliers Ive seen Carrier fliers little different generally one-handed few excep tions can fly bigger circle low speed hand use two hands high speed left hand support onlythe right index finger still handles throttle 5075 lbs pull pull-to-open throttle much easier keep open push-to-open rig one-hand operation low-speed throttle action also natural back pressure opens throttle up applied Also properly rigged up elevator condition against stop lines really loose will automatically open throttle bad situation total airplane pull about two pounds So have full story Two different methods two unique events As can see could go on meaningless debate about merits method lets just conclude devoted pilot can get satisfactory results either way know years RC has its Mode throttle right stick Mode II throttle left stick fliers tongue-in-cheek word-war about best Perhaps should divide up two-fisted lever pilots handed trigger pilots Are crazy Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 55 engine catches After plane air fly eye level approximately five feet off ground Have spotter better look see out board wing up down level Have spotter stand downwind facing can see plane coming going have spotter move counterclockwise 90 degrees around circle can watch plane downwind side upwind side Spot plane coming going position looking high low wing time pilot can look excessive yaw observing landing gear inboard gear looks front outboard gear plane goes around circle might too much line rake engine offset Going inverted flight first time new plane always thrill know engine tank setup worked perfectly last plane yesterday always couple large inside loops first downwind try elongated round inside loop long inverted part top what heck go start inside loop inverted flight Now get spotter again check wing high low outboard tip something seems wrong try level upright flight again followed inverted flight right away get spotters feel ings Since cant stop now anyway unless plane flying badly further experiments would dangerous lets go series climbs dives purpose see plane appears nose-heavy tail-heavyfor style offlying plane climbs dives very easily jerk may tail-heavy require nose weight plane seems locked groove level flight probably have too much nose weight may also experience hunting level flight means ship wants climb dive gradually time have keep minutely adjusting handle keep plane level flight seems have mind its own during level flight have keep adjusting wrist/hand/handle maintain constant alti tude quote Olympic Mark VI man Bob Gialdini Old stunt planes dont hunt ask Its because slop slop elevator movement 116 Model Aviation regard independent movement flaps Old planes have elevator horn bushing worn enough permit siop bushing elevator flap horn reamed out larger drill file elevator has much 3/16 play up down flaps motionless plane already built dont want cut 1 8-point finish Tough want fly look Now should try three inside round loops regular size followed three outside round loops see easier other Actually gut test inside-outside turnability comes inside outside squares rounds feel pretty much alike may ballpark Next havent used up seven minutes stopwatch try inside square spotter should standing about 20 feet off circle tangent downwind side facing front plane can look directly outboard wing first corner square pilot should also able see wing drop well spotter Also first couple squares should see plane has line tension throughout maneuver same tension top maneuvers bottom Now should about ready level off wait engine cut first trimming over comes very important part first flight As suming have perfect mel tanks tnat gives hurst oi jean lap new panel spans new moment arms cuts off entirely maintain level ready experiment flight about seven feet off ground until Now level flight wing up engine cuts Immediately notice what level flight same outboard wing happens during first part glide down inverted flight have path Does plane want climb dive warp outboard trailing edge and/or Does groove gradual descent Does flap down relative inboard trailing immediately buck up stall slightly edge and/or flap need bend terrific sense lightness outboard flap up relative inboard flap linesmore just result Chris Lella suggested lowering leadouts engine cutting finally can fly rather impractical since would onto ground landing mean significant operation tip does bounce stick down leadout fixture Lots stunt planes first flight over have lot flying tweaked flaps will items consider First level flight fly well wing down level flight wing up down B excessive yaw C up inverted flight outboard line tension D groove ortouchy response flap needs bent down relative E hunting Second inverted flightwing inboard flap up down Third inside outside round outboard flap down level flight loops turns easier B line also down inverted flight tension Fourth climbs divesnose probably have too much tip weight heavy tail heavy Fifth inside square should remove least ry hinging B line tension atthetopofthe again Ive tried purpose ittakes maneuver Sixth glide path touchy about oo much make wing controls smooth descent B landing drop common occurence wing abilitiesbounce kiss up level flight also up inverted next word advice after flight need add tip weight deciding what to trim plane ncrements always try thing time Let Inboard roll and/or outboard roll can emphasize change flight also function vertical center-ofmeans decide move leadouts gravity can also compounded back ing else plane dihedral trouble dont change props line lengths add tip cant much adjust vertical CG weight same time say after plane builtshort major will take lot time Yes does surgery leadouts have new design new dimensions saw inboard landing gear July1979 117 FOR THE SOARING BUFF sup ertape superwings lt applies stidcey brushing masking Portfolio lts stronger typical R/C building materialEverything need know create lt weighs 1 gin per sq ft building area lts 0005 thickyour own super-performance sailplane lts ready instant apply itA completely illustrated difinative work 20 pages packed technical data charts Olts quickest efficient method diagrams step-by-step instructions applying balsa greenskin other million $ worth information skin foam wing cores Plus dozens interested obtaining winning edge other great uses Try it in sailplane performance Hi Johnson 3/8roll $479 1roII $795 2roIl $1595 ALLROLLSAAE2160 LONGOnIy$150 SUPERWINGS 11015 Glenoaks Blvd Pacoima CA 91331 Tel 121318994312 J Features plated lit x 4 cr steel support mem ber plated 332 manganese bronze moving parts 05g Ii aluminum anchor strap simple anchor ing stake turf spike asphalt scres eyehalt 6-32 T famished hoard mount ing 25 lh capacity sill pall apart 120 ibs spring biased restraint am throon open position release huilt lock pre otots accidental release MODFL COMPONENTS 905 6 6 ttGfbt OR 9 riding noticeably ahead outboard gear level flight particularly approached upwind side circle may have too much yaw will need move leadouts forward and/or reduce some offset engine Line tension relative item Lots us fliers like feel chunk lead out pulling arms off others like just slight tug lines Personal preference should guide plane hard break level flight other words wanted groove took lot effort pull up may have too much nose weight plane may just nose-heavy Solution take out some nose weight switch lighter muffler try plastic spinner instead metal plane very touchy level flight actually hard control may tail-heavy need nose weight ncrements Ive already worked over what hunting plane Get sharp razor make incision under elevator side washer soldered onto push-rodhope remember side Most us insert push-rod left inboard side plane looking top supposition washer falls off centrifugal force will keep push-rod horn Good luck may still have cut other side such tight fit under stabilizer cant get push-rod out bearing cutting away part fuselage side Next consider inside outside loops whether plane turns easier other way seems favor way may want try shims under engine Shims can either washers easiest small pieces aluminum brass have cut out Before making decision better see plane turns inside outside squares ultimate sometimes final answer Since article getting pretty long Ill have deal line tension along other points maneuvers next month Prop selection can also affect line tension could have whole article Les McDonald Now lets quickly look glide path plane wants drop tail soon engine cuts its probably tail-heavy continues groove flies right down ground may nose-heavy plane goes extremely light lines after engine cuts may have leadouts too far forward too little tip weight plane bounces after good glide path either gear too springy its too far forward Try getting axle main gears line up leading edge wing viewed directly overhead information PAMPA stunt write Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Navy Carrier/Perry continued page 56 cruise under 40 mph 3-view draw ings show configurations unu sual aircraft 60 C- Iii u-i Q50 Li] u-I u-I z -J 40 30 20406080 SPEED MPI-1 Back 1966 American Modeler published set formulae developed Bill Netze band determining line drag leadout location CL models Roger Edwards NCAC Chairman has applied formu lae 3-line systems use Carrier has developed graphs accom pany months column Line rake angle amount leadouts swept back center-ofgravity CG shown function speed model weight As weight speed decreases line rake angle must crease compensate charts take guesswork out determining leadout loca tionassuming CG weight speed can reliably estimated varying opinions about movable leadouts interesting note little movement ideal leadout location between high speed low speed typical Class II model change less degree less 03 inch Profile change under degree 0020140 24 r-J 0 28 36 118 Model Aviation talL.. SAFE-LOK LAUNCHER PROFILE AND CLASS F 71Ii 7
Edition: Model Aviation - 1979/07
Page Numbers: 55, 116, 117, 118
see well plane stays out lines needs tail weight increase sensitivity during maneuvers see plane needs Use stopwatch start soon nose weight increase stability Continued page 116 LETS trim new stunt airplane Sup pose get rid usual gobbledygook explanations stick what seems work First thing should check out few things groundbefore consider flying plane sitting table head about foot nose sight over top wing switching eyes trailing edge tip side trailing edge other tip Make certain both trailing edges tips appear same time raise lower head some practice can spot warp much trouble Also time certain stabilizer exactly square wing rudder 1/16 off fix Make certain elevator exact neutral position flaps neutral Roll airplane across paved area should roll straight bend landing gear until does would very embarrassing first takeoff plane comes Next should statically balance plane theoretical center gravity usually about 2 2 leading edge wing root center wing Less same propor tion smaller-than-standard aircrafta Half-A instance personally dont feel establishing tip weight holding plane along center line fuselage watching plane tilt outboard wing very good usually start out too much rather too little tip weightarrived knowing what other planes have used just guess timating Now lets see can get crate air Instruct spotter helper what look first flight 1 level flight wings parallel ground 2 inverted flight wing level 3 inside square loop see about hinging drop ping outboard wing first second corners loop Also will looking comparison between inside outside round loops see plane turns better way other Halt-Breed II byJohn poynter has J i toam wings naps sxaoiiizer ana ejevator Engine ST 46 weight 56 oz Finished Aero Gloss color clear Acrylic enamel LVrI up iu i rlartvigsens Classic Fox 35 Fox muffler 56-in span 568 sq area weight 47 oz Airfoil NACA 0020 Finished Aero Gloss paint Wynn Paul plc Mexican FAI team member Ernesto Cuevas fliesthis Genesis Weighing60 ounces powered Supertigre 46 engine running off uniflow tank rakish looking design July 1979 55 0 LOWEST DRAIN WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition Just fun stick FIRE BALL great engine runs *advanced98 ............ FLASH STARTING 0 UNEXCELLED POWER LONGER LIFE cr11 1 GLOW PLUGS SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JE35EY 07470 Brashers Rotation Station Are exotic planes worth effort next season two will determine way Combat design will go CL Scale/Gretz continued page 54 small point personal preference fact believe person could become just proficient either mode operation learn either just easily got some own specific reasons prefer ring fly Scale high throttle forward handle said part set up first 3-line system years ago became obvious mounted inverted bellcrank inverted seemingly intended almost engine high throttle position would forward control handles throttle lever same holds true mounting upright bellcrank upright throttle-equipped engines know require throttle pushrod move forward open car buretor except Fox engines often have lever both directions other words modeler uses stock equip ment mounts manufacturer intended mounted would almost cases get high throttle moving handles lever forward way noticed Scale fliers doing Nationals order make system work other way must reverse directions somewhere along line As said can incorporate straight reversing bellcrank arm between engine 3-line bellcrank can mount inverted style bellcrank upright upright style bellcrank inverted although know some control rod hookup problems can also simply loosen throttle arm engines rotate 180 degrees top side carb couldnt see possible advantage Scale flying doing things mentioned seemed natural pull back handles trigger get fast throttle seems natural fast throttle forward fullsize airplane automobile use left hand operate lever top handle thus always fly both hands Perhaps real heart personal preferences matter Im wondering other Carrier fliers normally fly hand using index finger operate trigger feel way can operate throttle precisely through stages scale flight competition Scale flying good share point-getting maneuvers done very near low throttlelike initial takeoff run landing touch-and-go taxi During maneuvers precise coordinated elevator throttle use important prefer trigger back what seem agree comfort able position day after mailed reply letter arrived MA sown Carrier expert respected friend Dick Perry very knowledgeably shed some light Carrier fliers prefer control set-up opposite what normal Scale Dick said looks like disagree little way appropriate direction open throttle 3-line system Its certainly no big thing Carrier requirements just little different Scale way forward openis way real air plane builders it works great two-handed flyingthe way Scale fliers Ive seen Carrier fliers little different generally one-handed few excep tions can fly bigger circle low speed hand use two hands high speed left hand support onlythe right index finger still handles throttle 5075 lbs pull pull-to-open throttle much easier keep open push-to-open rig one-hand operation low-speed throttle action also natural back pressure opens throttle up applied Also properly rigged up elevator condition against stop lines really loose will automatically open throttle bad situation total airplane pull about two pounds So have full story Two different methods two unique events As can see could go on meaningless debate about merits method lets just conclude devoted pilot can get satisfactory results either way know years RC has its Mode throttle right stick Mode II throttle left stick fliers tongue-in-cheek word-war about best Perhaps should divide up two-fisted lever pilots handed trigger pilots Are crazy Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 55 engine catches After plane air fly eye level approximately five feet off ground Have spotter better look see out board wing up down level Have spotter stand downwind facing can see plane coming going have spotter move counterclockwise 90 degrees around circle can watch plane downwind side upwind side Spot plane coming going position looking high low wing time pilot can look excessive yaw observing landing gear inboard gear looks front outboard gear plane goes around circle might too much line rake engine offset Going inverted flight first time new plane always thrill know engine tank setup worked perfectly last plane yesterday always couple large inside loops first downwind try elongated round inside loop long inverted part top what heck go start inside loop inverted flight Now get spotter again check wing high low outboard tip something seems wrong try level upright flight again followed inverted flight right away get spotters feel ings Since cant stop now anyway unless plane flying badly further experiments would dangerous lets go series climbs dives purpose see plane appears nose-heavy tail-heavyfor style offlying plane climbs dives very easily jerk may tail-heavy require nose weight plane seems locked groove level flight probably have too much nose weight may also experience hunting level flight means ship wants climb dive gradually time have keep minutely adjusting handle keep plane level flight seems have mind its own during level flight have keep adjusting wrist/hand/handle maintain constant alti tude quote Olympic Mark VI man Bob Gialdini Old stunt planes dont hunt ask Its because slop slop elevator movement 116 Model Aviation regard independent movement flaps Old planes have elevator horn bushing worn enough permit siop bushing elevator flap horn reamed out larger drill file elevator has much 3/16 play up down flaps motionless plane already built dont want cut 1 8-point finish Tough want fly look Now should try three inside round loops regular size followed three outside round loops see easier other Actually gut test inside-outside turnability comes inside outside squares rounds feel pretty much alike may ballpark Next havent used up seven minutes stopwatch try inside square spotter should standing about 20 feet off circle tangent downwind side facing front plane can look directly outboard wing first corner square pilot should also able see wing drop well spotter Also first couple squares should see plane has line tension throughout maneuver same tension top maneuvers bottom Now should about ready level off wait engine cut first trimming over comes very important part first flight As suming have perfect mel tanks tnat gives hurst oi jean lap new panel spans new moment arms cuts off entirely maintain level ready experiment flight about seven feet off ground until Now level flight wing up engine cuts Immediately notice what level flight same outboard wing happens during first part glide down inverted flight have path Does plane want climb dive warp outboard trailing edge and/or Does groove gradual descent Does flap down relative inboard trailing immediately buck up stall slightly edge and/or flap need bend terrific sense lightness outboard flap up relative inboard flap linesmore just result Chris Lella suggested lowering leadouts engine cutting finally can fly rather impractical since would onto ground landing mean significant operation tip does bounce stick down leadout fixture Lots stunt planes first flight over have lot flying tweaked flaps will items consider First level flight fly well wing down level flight wing up down B excessive yaw C up inverted flight outboard line tension D groove ortouchy response flap needs bent down relative E hunting Second inverted flightwing inboard flap up down Third inside outside round outboard flap down level flight loops turns easier B line also down inverted flight tension Fourth climbs divesnose probably have too much tip weight heavy tail heavy Fifth inside square should remove least ry hinging B line tension atthetopofthe again Ive tried purpose ittakes maneuver Sixth glide path touchy about oo much make wing controls smooth descent B landing drop common occurence wing abilitiesbounce kiss up level flight also up inverted next word advice after flight need add tip weight deciding what to trim plane ncrements always try thing time Let Inboard roll and/or outboard roll can emphasize change flight also function vertical center-ofmeans decide move leadouts gravity can also compounded back ing else plane dihedral trouble dont change props line lengths add tip cant much adjust vertical CG weight same time say after plane builtshort major will take lot time Yes does surgery leadouts have new design new dimensions saw inboard landing gear July1979 117 FOR THE SOARING BUFF sup ertape superwings lt applies stidcey brushing masking Portfolio lts stronger typical R/C building materialEverything need know create lt weighs 1 gin per sq ft building area lts 0005 thickyour own super-performance sailplane lts ready instant apply itA completely illustrated difinative work 20 pages packed technical data charts Olts quickest efficient method diagrams step-by-step instructions applying balsa greenskin other million $ worth information skin foam wing cores Plus dozens interested obtaining winning edge other great uses Try it in sailplane performance Hi Johnson 3/8roll $479 1roII $795 2roIl $1595 ALLROLLSAAE2160 LONGOnIy$150 SUPERWINGS 11015 Glenoaks Blvd Pacoima CA 91331 Tel 121318994312 J Features plated lit x 4 cr steel support mem ber plated 332 manganese bronze moving parts 05g Ii aluminum anchor strap simple anchor ing stake turf spike asphalt scres eyehalt 6-32 T famished hoard mount ing 25 lh capacity sill pall apart 120 ibs spring biased restraint am throon open position release huilt lock pre otots accidental release MODFL COMPONENTS 905 6 6 ttGfbt OR 9 riding noticeably ahead outboard gear level flight particularly approached upwind side circle may have too much yaw will need move leadouts forward and/or reduce some offset engine Line tension relative item Lots us fliers like feel chunk lead out pulling arms off others like just slight tug lines Personal preference should guide plane hard break level flight other words wanted groove took lot effort pull up may have too much nose weight plane may just nose-heavy Solution take out some nose weight switch lighter muffler try plastic spinner instead metal plane very touchy level flight actually hard control may tail-heavy need nose weight ncrements Ive already worked over what hunting plane Get sharp razor make incision under elevator side washer soldered onto push-rodhope remember side Most us insert push-rod left inboard side plane looking top supposition washer falls off centrifugal force will keep push-rod horn Good luck may still have cut other side such tight fit under stabilizer cant get push-rod out bearing cutting away part fuselage side Next consider inside outside loops whether plane turns easier other way seems favor way may want try shims under engine Shims can either washers easiest small pieces aluminum brass have cut out Before making decision better see plane turns inside outside squares ultimate sometimes final answer Since article getting pretty long Ill have deal line tension along other points maneuvers next month Prop selection can also affect line tension could have whole article Les McDonald Now lets quickly look glide path plane wants drop tail soon engine cuts its probably tail-heavy continues groove flies right down ground may nose-heavy plane goes extremely light lines after engine cuts may have leadouts too far forward too little tip weight plane bounces after good glide path either gear too springy its too far forward Try getting axle main gears line up leading edge wing viewed directly overhead information PAMPA stunt write Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Navy Carrier/Perry continued page 56 cruise under 40 mph 3-view draw ings show configurations unu sual aircraft 60 C- Iii u-i Q50 Li] u-I u-I z -J 40 30 20406080 SPEED MPI-1 Back 1966 American Modeler published set formulae developed Bill Netze band determining line drag leadout location CL models Roger Edwards NCAC Chairman has applied formu lae 3-line systems use Carrier has developed graphs accom pany months column Line rake angle amount leadouts swept back center-ofgravity CG shown function speed model weight As weight speed decreases line rake angle must crease compensate charts take guesswork out determining leadout loca tionassuming CG weight speed can reliably estimated varying opinions about movable leadouts interesting note little movement ideal leadout location between high speed low speed typical Class II model change less degree less 03 inch Profile change under degree 0020140 24 r-J 0 28 36 118 Model Aviation talL.. SAFE-LOK LAUNCHER PROFILE AND CLASS F 71Ii 7