Radio Control SPORT AEROBA TICS Ron Van Putte RETROSPECTION Ive involved RC nearly 30 years like expe rienced modelers tend overlook problems newcomers have Occa sionally get brought up short ginners question makes realize everyone understands things lot us take granted Such case mature individualbut novice modelerasked made difference whether Vs-in gap between horizontal tail elevator point realized dis cussion aerodynamics controls due also reminded discussion Don Lowe years ago about effects sealing gaps between wing ailerons As remember Don interested increasing roll rate Phoenix V After reviewing couple technical reports written about wind tunnel tests various wing/aileron combinations estimated could expect least 50% increase roll rate sealed wing aileron gap Well put Scotch tape bottom 46 Model Aviation What grown RC filers Its too cold outdoors fly go local gym sponsor AMA Delta Dart program get little stlck time themselves too Modelers photo members Floridas Eglin Aero Modellers Get load SIgs new Pattern kit Astro Hog lives again great design won fIrst 4 places RC 1958 Nats first really sucCessful low-winger Fred Dunn designed 1957 Hogs usually flew Torp 45s has Os 60 four-stroke Sigs Mike Greiz says its super fliergreat maneuvers verticals wing/aileron gap went out fly say startled increase roll rate understatement actually reduce amount aileron throw addi tion discovered benefit gap sealing never thought about airplane per formed loops much better Now cause benefit may immediately ap parent same reason roll rate affected wing/aileron gap seal also explains loops improved dont want get technical discus sion effects gap-sealing simple explanation order reason Continued page 143 may remember seeing photo before Ron talking about dihedrai reducers Wail underside Rons Phoenix 8 wing youre supposed iook seaied gap between wing aiieron time Ron uses 3M piastic tape teiis some tricks articie says seaiing wingl aiieron gap can make unbeiievabie Improve ments roii rateand ioops tool II 8th biennial Toumament Champions scheduied November 7-11 1g64 Las Vegas NV Once again Circus Circus Hotei/Casino sponsor internationai RC competition offering $125000 prize money 20 competitors seiected invited contest manage ment year competition ruies have siightiy changed hopes reviving interest historicai bipianas American barnstorming era promoting greater variety aircraft types fiying styiss fiight scores aii contestants flying bipianes wiii increased factor 10% contest site wiii RC Modei Airlisid North Las Vegas Regionai Park speciaiiy-buiit faciiity compiete runways aprons judges paviiion bieacher seating provisions power water Spectators invited free charge refreshments souvenirs wiii avaiiabie throughout contest Circus Circus Hotei/Casino now accepting room reservations event further information write Pubiic Reiations Dept PO Box 14967 Las Vegas NV 89114 Wiii seven-time winner Hanno Prettner repeat Scale its FAT rules observed trend multi-engines retractable land ing gears obvious result bonus system boosts flight scores types Skip Masts Lockheed Hercules Steve Saugers Stinson Trimotor Hal Parentis Savoia Marchetti Trimotor built take advantage bonuses fered Skip Steve will represent US 1984 Scale World Championships models fully expect competition other nations similar aircraft superficial observation might ex pect four-engine airplane would complex trimotor whereas opposite may true may decid ing factor choosing over other modeling subject Saugers Stinson could well rank complex multiengine models Modern four-engine tur boprop planes have clean exterior far simpler reproduce extra en gine adds another 5% bonus fourengine model appears lot tractive subject choice really looking simple airplane en gines Examples deHavilland Trans porter Twin Otter Dash-7 Aero spatiale Mohawk Ahrens AR 404 Shorts Belfast 330 Rockwell Shrike Transall C-160 Lockheed Hercules Partenavia Vic tor Fairchild Friendship BrittenNorman Trislander name few possible candidates Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Aerobatics/Van Putte Continued aaoe 47 wing does its job because net air pressure differential between top bot tom results lift drag takes solid barrier sustain pressure differen tial theres gap between wing aileron cant pressure differential between top bottom wing gap areas wing aileron vicinity gap suffer net loss pressure effect pronounced aileron deflected Sealing gap makes wing effective normal flight also ailerons deflected youve followed far may still wondering loops affected sealing wing/aileron gap problem gap between wing ailerons effects gaps arent always same miniscule difference gap side wing relative other side can cause lift wing other airplane will roll effect pronounced tighter loops because wing under heavier load gap effect amplified An airplane rolls loop bad news worse fact airplane doesnt always roll same direction Sometimes gap leaks other sometimes re verse Sealing gap eliminates problemand suddenly airplane does loops like its rails same beneficial effect occurs elevator becomes much effective gap sealed substantial reductions amount elevator throw required perform loops can expected Like solution problem theres often problem implementing solu tion Gap sealing no exception Most peo ple use tape seal gap often end up control system kind stiff sticky use technique minimizes problems thoroughly clean area gap rubbing alcohol thinner remove traces oil other residues would keep tape sticking properly tape use 3-M vinyl tape matches airplane color clear tape cant get color-match control surface de flected full Up position tape placed bottom wing horizontal tail doesnt show tape should wide enough least -in tape contact either side gap As control surface returned toward neutral tape tucked gap left way adhesive tape gap would make control surface motion sticky prevent sprinkle talcum powder through gap top until adhesive gap covered theres no stickiness excess gets blown out Depending much airplane flown tape will have replaced year As writing last sentence occurred some readers would like have airplane lasted long thats another problem Just before started writing months column received advance copy March 1984 issue received two months ago big news contained Competition Newsletter section case missed Radio Control Con test Board approved use 12 cu four-stroke engines RC Pattern effective 1 January 1984 vote changed 60% factor 50% factor computing maximum permissible size four-stroke engines relative two-stroke engines fore maximum four-cycle engine dis placement 103 cubic inches vote sure make several manufacturers 12 cu four-cycle engines very happy will also change lot fliers minds about airplane engine use Pattern competition during 1984 way March issue also con tained misspelling word column pet peeves include use pre ventative lieu preventive Sorry know better people Ive talked about Turnaround pattern afraid what will happen first few times try Continued page 146 May1984 143 4A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs 3 x 5 Easy Mounting Continued page 143 Only $2695 fear theyll get involved trying maneuvers theyll forget fly airplane fears well grounded pun us can remember terror first time tried certain maneuvers special bugaboo Three Outside Loops old Class B schedule top thought pushing down elevator would make heart feel like going thump right out chest exciting time both judges times question about whether Id bail out before did finally got hang start ing high altitude throttling back just before pushing over things werent happening quite fast As developed con fidence reduced altitude start maneuver until finally down supposed other words sneaked up maneuver Most us approach difficult maneuver same waywe sneak up makes good sense develop confidence fore trying something right way Turnaround pattern no different learning Turnaround pattern pilots will probably have take apart pieces practice pieces pattern con taining two three four maneuvers until comfortable Gradually everything can put together until pat tern complete course job learning Turn around pattern will take longer broken lots small pieces practiced until pilot very comfortable tricky part pilot forces him self move before comfortable isnt really learning much con tinued practice Good luck Turnarounders Ron Van Pu#e 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 146 Model Aviation ushering high-level Helicopter aerobatics Superior machine Eightiesa machine offer just loops rolls first thing came mind built Superior Schluter de signed machine made perform wear out too quickly Literally moving part supported ball bearings quality will give machine ability lastof course barring accidental damage Because describing necessary set-up required Superior takes quite bit space will use remainder column talking about assembling ma chine will cover flying next month Superior carefully packaged two boxes box mechanics second box contains now-familiar Schlu ter plastic cabin parts arrived safely packaging adequate Dieter made wise decision drew plan sheet helicopter mechanics drawing laid out two-sided exploded isometric showing parts loca tions drawing greatly aids assembly Building Superior should tough someone has few Helicopters un der belt especially has previously built Schluter product instruc tion booklet supplied adequate its just first-time builder may have some problems areas writer manual assumes builder familiar task hand point comes mind main rotor blade balancing instance manual states take grante4 basic technique bal ancing procedure known feel too vague since balancing rotors extremely important properly-flying machine Superior assembled 14 primary steps will now go over steps might need explanationor builder should careful Sequence deals securing pitch roll bellcranks side frames careful belicranks move freely no slop Sequence two deals applying swash plate pitch-change mechanism follower main shaft careful follow proper sequence become confused some parts instance swash plate pre assembled factory although draw ing makes appear have assembled builder Step five extremely important smooth-running machine Follow Schluters instructions make sure starting shaft has absolute minimum run-out wobble completed machine has high-frequency vibration can almost always track problem down being starting shaft clutch assembly running out step six make sure clutch bell has 1mm end-play completely sembled mounted place Step seven critical happy engine trimming part 298 make sure remove just enough material clearance cooling air must guided around cylinder proper cooling Step eight too tough careful drill oversize holes tank threaded plate mounted bumps flat fit against tank wall threaded shank points away towards center tank sure use silicon seal tank connections want leakproof tank especially running pressure step ten make sure use per manent Locktite 3mm hub-mounting screw careful overtighten 2mm screws secure tail rotor hub pieces together Check binding bearings screws should snug tight point distorting hub forewarned hub binding ball bearings will soon go away tail rotor failure becoming imminent step eleven must decide much collective range will need have found Superior much easier set up use position B U-lever Superior very sensitive amount collective pitch used very definite collective Continued page 150 stanoaro frower ane snown aso available two new versions smaller Mini Panel flexible Dual Range Panel gives Option t-t/2 2 volts glow plug RC AerobaticsNan PutteRC Helicopters/Jolly __________________________________Continued page 52 GIANT RIC SCALE PLANS SOPhW55S*kOC14Slfl Se.52402epUSA SOPWITSTAKOSO2% 4 SpaSlSUSppasa AT-a 7SSAS24 0 SpRae pusa COSSEROI21RU nipSSSWpeUSA P45 CORSAIR2' SpSae20ppUSA CURTISSPaean V54 Se.Sat SeppUSA P SEARCAr2% IRU Se.RVSeppUSA Fiberglass Cowlings & Canopies acailable send Stamp detailed Brochures oar Giant scale Occessories Oar Plans sent Post-Paid within d5Al Nick Zirali 29 Edga Drine SnIRhtown NY 11787 USA writing advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/05
Page Numbers: 46, 47, 143, 146
Radio Control SPORT AEROBA TICS Ron Van Putte RETROSPECTION Ive involved RC nearly 30 years like expe rienced modelers tend overlook problems newcomers have Occa sionally get brought up short ginners question makes realize everyone understands things lot us take granted Such case mature individualbut novice modelerasked made difference whether Vs-in gap between horizontal tail elevator point realized dis cussion aerodynamics controls due also reminded discussion Don Lowe years ago about effects sealing gaps between wing ailerons As remember Don interested increasing roll rate Phoenix V After reviewing couple technical reports written about wind tunnel tests various wing/aileron combinations estimated could expect least 50% increase roll rate sealed wing aileron gap Well put Scotch tape bottom 46 Model Aviation What grown RC filers Its too cold outdoors fly go local gym sponsor AMA Delta Dart program get little stlck time themselves too Modelers photo members Floridas Eglin Aero Modellers Get load SIgs new Pattern kit Astro Hog lives again great design won fIrst 4 places RC 1958 Nats first really sucCessful low-winger Fred Dunn designed 1957 Hogs usually flew Torp 45s has Os 60 four-stroke Sigs Mike Greiz says its super fliergreat maneuvers verticals wing/aileron gap went out fly say startled increase roll rate understatement actually reduce amount aileron throw addi tion discovered benefit gap sealing never thought about airplane per formed loops much better Now cause benefit may immediately ap parent same reason roll rate affected wing/aileron gap seal also explains loops improved dont want get technical discus sion effects gap-sealing simple explanation order reason Continued page 143 may remember seeing photo before Ron talking about dihedrai reducers Wail underside Rons Phoenix 8 wing youre supposed iook seaied gap between wing aiieron time Ron uses 3M piastic tape teiis some tricks articie says seaiing wingl aiieron gap can make unbeiievabie Improve ments roii rateand ioops tool II 8th biennial Toumament Champions scheduied November 7-11 1g64 Las Vegas NV Once again Circus Circus Hotei/Casino sponsor internationai RC competition offering $125000 prize money 20 competitors seiected invited contest manage ment year competition ruies have siightiy changed hopes reviving interest historicai bipianas American barnstorming era promoting greater variety aircraft types fiying styiss fiight scores aii contestants flying bipianes wiii increased factor 10% contest site wiii RC Modei Airlisid North Las Vegas Regionai Park speciaiiy-buiit faciiity compiete runways aprons judges paviiion bieacher seating provisions power water Spectators invited free charge refreshments souvenirs wiii avaiiabie throughout contest Circus Circus Hotei/Casino now accepting room reservations event further information write Pubiic Reiations Dept PO Box 14967 Las Vegas NV 89114 Wiii seven-time winner Hanno Prettner repeat Scale its FAT rules observed trend multi-engines retractable land ing gears obvious result bonus system boosts flight scores types Skip Masts Lockheed Hercules Steve Saugers Stinson Trimotor Hal Parentis Savoia Marchetti Trimotor built take advantage bonuses fered Skip Steve will represent US 1984 Scale World Championships models fully expect competition other nations similar aircraft superficial observation might ex pect four-engine airplane would complex trimotor whereas opposite may true may decid ing factor choosing over other modeling subject Saugers Stinson could well rank complex multiengine models Modern four-engine tur boprop planes have clean exterior far simpler reproduce extra en gine adds another 5% bonus fourengine model appears lot tractive subject choice really looking simple airplane en gines Examples deHavilland Trans porter Twin Otter Dash-7 Aero spatiale Mohawk Ahrens AR 404 Shorts Belfast 330 Rockwell Shrike Transall C-160 Lockheed Hercules Partenavia Vic tor Fairchild Friendship BrittenNorman Trislander name few possible candidates Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Aerobatics/Van Putte Continued aaoe 47 wing does its job because net air pressure differential between top bot tom results lift drag takes solid barrier sustain pressure differen tial theres gap between wing aileron cant pressure differential between top bottom wing gap areas wing aileron vicinity gap suffer net loss pressure effect pronounced aileron deflected Sealing gap makes wing effective normal flight also ailerons deflected youve followed far may still wondering loops affected sealing wing/aileron gap problem gap between wing ailerons effects gaps arent always same miniscule difference gap side wing relative other side can cause lift wing other airplane will roll effect pronounced tighter loops because wing under heavier load gap effect amplified An airplane rolls loop bad news worse fact airplane doesnt always roll same direction Sometimes gap leaks other sometimes re verse Sealing gap eliminates problemand suddenly airplane does loops like its rails same beneficial effect occurs elevator becomes much effective gap sealed substantial reductions amount elevator throw required perform loops can expected Like solution problem theres often problem implementing solu tion Gap sealing no exception Most peo ple use tape seal gap often end up control system kind stiff sticky use technique minimizes problems thoroughly clean area gap rubbing alcohol thinner remove traces oil other residues would keep tape sticking properly tape use 3-M vinyl tape matches airplane color clear tape cant get color-match control surface de flected full Up position tape placed bottom wing horizontal tail doesnt show tape should wide enough least -in tape contact either side gap As control surface returned toward neutral tape tucked gap left way adhesive tape gap would make control surface motion sticky prevent sprinkle talcum powder through gap top until adhesive gap covered theres no stickiness excess gets blown out Depending much airplane flown tape will have replaced year As writing last sentence occurred some readers would like have airplane lasted long thats another problem Just before started writing months column received advance copy March 1984 issue received two months ago big news contained Competition Newsletter section case missed Radio Control Con test Board approved use 12 cu four-stroke engines RC Pattern effective 1 January 1984 vote changed 60% factor 50% factor computing maximum permissible size four-stroke engines relative two-stroke engines fore maximum four-cycle engine dis placement 103 cubic inches vote sure make several manufacturers 12 cu four-cycle engines very happy will also change lot fliers minds about airplane engine use Pattern competition during 1984 way March issue also con tained misspelling word column pet peeves include use pre ventative lieu preventive Sorry know better people Ive talked about Turnaround pattern afraid what will happen first few times try Continued page 146 May1984 143 4A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs 3 x 5 Easy Mounting Continued page 143 Only $2695 fear theyll get involved trying maneuvers theyll forget fly airplane fears well grounded pun us can remember terror first time tried certain maneuvers special bugaboo Three Outside Loops old Class B schedule top thought pushing down elevator would make heart feel like going thump right out chest exciting time both judges times question about whether Id bail out before did finally got hang start ing high altitude throttling back just before pushing over things werent happening quite fast As developed con fidence reduced altitude start maneuver until finally down supposed other words sneaked up maneuver Most us approach difficult maneuver same waywe sneak up makes good sense develop confidence fore trying something right way Turnaround pattern no different learning Turnaround pattern pilots will probably have take apart pieces practice pieces pattern con taining two three four maneuvers until comfortable Gradually everything can put together until pat tern complete course job learning Turn around pattern will take longer broken lots small pieces practiced until pilot very comfortable tricky part pilot forces him self move before comfortable isnt really learning much con tinued practice Good luck Turnarounders Ron Van Pu#e 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 146 Model Aviation ushering high-level Helicopter aerobatics Superior machine Eightiesa machine offer just loops rolls first thing came mind built Superior Schluter de signed machine made perform wear out too quickly Literally moving part supported ball bearings quality will give machine ability lastof course barring accidental damage Because describing necessary set-up required Superior takes quite bit space will use remainder column talking about assembling ma chine will cover flying next month Superior carefully packaged two boxes box mechanics second box contains now-familiar Schlu ter plastic cabin parts arrived safely packaging adequate Dieter made wise decision drew plan sheet helicopter mechanics drawing laid out two-sided exploded isometric showing parts loca tions drawing greatly aids assembly Building Superior should tough someone has few Helicopters un der belt especially has previously built Schluter product instruc tion booklet supplied adequate its just first-time builder may have some problems areas writer manual assumes builder familiar task hand point comes mind main rotor blade balancing instance manual states take grante4 basic technique bal ancing procedure known feel too vague since balancing rotors extremely important properly-flying machine Superior assembled 14 primary steps will now go over steps might need explanationor builder should careful Sequence deals securing pitch roll bellcranks side frames careful belicranks move freely no slop Sequence two deals applying swash plate pitch-change mechanism follower main shaft careful follow proper sequence become confused some parts instance swash plate pre assembled factory although draw ing makes appear have assembled builder Step five extremely important smooth-running machine Follow Schluters instructions make sure starting shaft has absolute minimum run-out wobble completed machine has high-frequency vibration can almost always track problem down being starting shaft clutch assembly running out step six make sure clutch bell has 1mm end-play completely sembled mounted place Step seven critical happy engine trimming part 298 make sure remove just enough material clearance cooling air must guided around cylinder proper cooling Step eight too tough careful drill oversize holes tank threaded plate mounted bumps flat fit against tank wall threaded shank points away towards center tank sure use silicon seal tank connections want leakproof tank especially running pressure step ten make sure use per manent Locktite 3mm hub-mounting screw careful overtighten 2mm screws secure tail rotor hub pieces together Check binding bearings screws should snug tight point distorting hub forewarned hub binding ball bearings will soon go away tail rotor failure becoming imminent step eleven must decide much collective range will need have found Superior much easier set up use position B U-lever Superior very sensitive amount collective pitch used very definite collective Continued page 150 stanoaro frower ane snown aso available two new versions smaller Mini Panel flexible Dual Range Panel gives Option t-t/2 2 volts glow plug RC AerobaticsNan PutteRC Helicopters/Jolly __________________________________Continued page 52 GIANT RIC SCALE PLANS SOPhW55S*kOC14Slfl Se.52402epUSA SOPWITSTAKOSO2% 4 SpaSlSUSppasa AT-a 7SSAS24 0 SpRae pusa COSSEROI21RU nipSSSWpeUSA P45 CORSAIR2' SpSae20ppUSA CURTISSPaean V54 Se.Sat SeppUSA P SEARCAr2% IRU Se.RVSeppUSA Fiberglass Cowlings & Canopies acailable send Stamp detailed Brochures oar Giant scale Occessories Oar Plans sent Post-Paid within d5Al Nick Zirali 29 Edga Drine SnIRhtown NY 11787 USA writing advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/05
Page Numbers: 46, 47, 143, 146
Radio Control SPORT AEROBA TICS Ron Van Putte RETROSPECTION Ive involved RC nearly 30 years like expe rienced modelers tend overlook problems newcomers have Occa sionally get brought up short ginners question makes realize everyone understands things lot us take granted Such case mature individualbut novice modelerasked made difference whether Vs-in gap between horizontal tail elevator point realized dis cussion aerodynamics controls due also reminded discussion Don Lowe years ago about effects sealing gaps between wing ailerons As remember Don interested increasing roll rate Phoenix V After reviewing couple technical reports written about wind tunnel tests various wing/aileron combinations estimated could expect least 50% increase roll rate sealed wing aileron gap Well put Scotch tape bottom 46 Model Aviation What grown RC filers Its too cold outdoors fly go local gym sponsor AMA Delta Dart program get little stlck time themselves too Modelers photo members Floridas Eglin Aero Modellers Get load SIgs new Pattern kit Astro Hog lives again great design won fIrst 4 places RC 1958 Nats first really sucCessful low-winger Fred Dunn designed 1957 Hogs usually flew Torp 45s has Os 60 four-stroke Sigs Mike Greiz says its super fliergreat maneuvers verticals wing/aileron gap went out fly say startled increase roll rate understatement actually reduce amount aileron throw addi tion discovered benefit gap sealing never thought about airplane per formed loops much better Now cause benefit may immediately ap parent same reason roll rate affected wing/aileron gap seal also explains loops improved dont want get technical discus sion effects gap-sealing simple explanation order reason Continued page 143 may remember seeing photo before Ron talking about dihedrai reducers Wail underside Rons Phoenix 8 wing youre supposed iook seaied gap between wing aiieron time Ron uses 3M piastic tape teiis some tricks articie says seaiing wingl aiieron gap can make unbeiievabie Improve ments roii rateand ioops tool II 8th biennial Toumament Champions scheduied November 7-11 1g64 Las Vegas NV Once again Circus Circus Hotei/Casino sponsor internationai RC competition offering $125000 prize money 20 competitors seiected invited contest manage ment year competition ruies have siightiy changed hopes reviving interest historicai bipianas American barnstorming era promoting greater variety aircraft types fiying styiss fiight scores aii contestants flying bipianes wiii increased factor 10% contest site wiii RC Modei Airlisid North Las Vegas Regionai Park speciaiiy-buiit faciiity compiete runways aprons judges paviiion bieacher seating provisions power water Spectators invited free charge refreshments souvenirs wiii avaiiabie throughout contest Circus Circus Hotei/Casino now accepting room reservations event further information write Pubiic Reiations Dept PO Box 14967 Las Vegas NV 89114 Wiii seven-time winner Hanno Prettner repeat Scale its FAT rules observed trend multi-engines retractable land ing gears obvious result bonus system boosts flight scores types Skip Masts Lockheed Hercules Steve Saugers Stinson Trimotor Hal Parentis Savoia Marchetti Trimotor built take advantage bonuses fered Skip Steve will represent US 1984 Scale World Championships models fully expect competition other nations similar aircraft superficial observation might ex pect four-engine airplane would complex trimotor whereas opposite may true may decid ing factor choosing over other modeling subject Saugers Stinson could well rank complex multiengine models Modern four-engine tur boprop planes have clean exterior far simpler reproduce extra en gine adds another 5% bonus fourengine model appears lot tractive subject choice really looking simple airplane en gines Examples deHavilland Trans porter Twin Otter Dash-7 Aero spatiale Mohawk Ahrens AR 404 Shorts Belfast 330 Rockwell Shrike Transall C-160 Lockheed Hercules Partenavia Vic tor Fairchild Friendship BrittenNorman Trislander name few possible candidates Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Aerobatics/Van Putte Continued aaoe 47 wing does its job because net air pressure differential between top bot tom results lift drag takes solid barrier sustain pressure differen tial theres gap between wing aileron cant pressure differential between top bottom wing gap areas wing aileron vicinity gap suffer net loss pressure effect pronounced aileron deflected Sealing gap makes wing effective normal flight also ailerons deflected youve followed far may still wondering loops affected sealing wing/aileron gap problem gap between wing ailerons effects gaps arent always same miniscule difference gap side wing relative other side can cause lift wing other airplane will roll effect pronounced tighter loops because wing under heavier load gap effect amplified An airplane rolls loop bad news worse fact airplane doesnt always roll same direction Sometimes gap leaks other sometimes re verse Sealing gap eliminates problemand suddenly airplane does loops like its rails same beneficial effect occurs elevator becomes much effective gap sealed substantial reductions amount elevator throw required perform loops can expected Like solution problem theres often problem implementing solu tion Gap sealing no exception Most peo ple use tape seal gap often end up control system kind stiff sticky use technique minimizes problems thoroughly clean area gap rubbing alcohol thinner remove traces oil other residues would keep tape sticking properly tape use 3-M vinyl tape matches airplane color clear tape cant get color-match control surface de flected full Up position tape placed bottom wing horizontal tail doesnt show tape should wide enough least -in tape contact either side gap As control surface returned toward neutral tape tucked gap left way adhesive tape gap would make control surface motion sticky prevent sprinkle talcum powder through gap top until adhesive gap covered theres no stickiness excess gets blown out Depending much airplane flown tape will have replaced year As writing last sentence occurred some readers would like have airplane lasted long thats another problem Just before started writing months column received advance copy March 1984 issue received two months ago big news contained Competition Newsletter section case missed Radio Control Con test Board approved use 12 cu four-stroke engines RC Pattern effective 1 January 1984 vote changed 60% factor 50% factor computing maximum permissible size four-stroke engines relative two-stroke engines fore maximum four-cycle engine dis placement 103 cubic inches vote sure make several manufacturers 12 cu four-cycle engines very happy will also change lot fliers minds about airplane engine use Pattern competition during 1984 way March issue also con tained misspelling word column pet peeves include use pre ventative lieu preventive Sorry know better people Ive talked about Turnaround pattern afraid what will happen first few times try Continued page 146 May1984 143 4A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs 3 x 5 Easy Mounting Continued page 143 Only $2695 fear theyll get involved trying maneuvers theyll forget fly airplane fears well grounded pun us can remember terror first time tried certain maneuvers special bugaboo Three Outside Loops old Class B schedule top thought pushing down elevator would make heart feel like going thump right out chest exciting time both judges times question about whether Id bail out before did finally got hang start ing high altitude throttling back just before pushing over things werent happening quite fast As developed con fidence reduced altitude start maneuver until finally down supposed other words sneaked up maneuver Most us approach difficult maneuver same waywe sneak up makes good sense develop confidence fore trying something right way Turnaround pattern no different learning Turnaround pattern pilots will probably have take apart pieces practice pieces pattern con taining two three four maneuvers until comfortable Gradually everything can put together until pat tern complete course job learning Turn around pattern will take longer broken lots small pieces practiced until pilot very comfortable tricky part pilot forces him self move before comfortable isnt really learning much con tinued practice Good luck Turnarounders Ron Van Pu#e 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 146 Model Aviation ushering high-level Helicopter aerobatics Superior machine Eightiesa machine offer just loops rolls first thing came mind built Superior Schluter de signed machine made perform wear out too quickly Literally moving part supported ball bearings quality will give machine ability lastof course barring accidental damage Because describing necessary set-up required Superior takes quite bit space will use remainder column talking about assembling ma chine will cover flying next month Superior carefully packaged two boxes box mechanics second box contains now-familiar Schlu ter plastic cabin parts arrived safely packaging adequate Dieter made wise decision drew plan sheet helicopter mechanics drawing laid out two-sided exploded isometric showing parts loca tions drawing greatly aids assembly Building Superior should tough someone has few Helicopters un der belt especially has previously built Schluter product instruc tion booklet supplied adequate its just first-time builder may have some problems areas writer manual assumes builder familiar task hand point comes mind main rotor blade balancing instance manual states take grante4 basic technique bal ancing procedure known feel too vague since balancing rotors extremely important properly-flying machine Superior assembled 14 primary steps will now go over steps might need explanationor builder should careful Sequence deals securing pitch roll bellcranks side frames careful belicranks move freely no slop Sequence two deals applying swash plate pitch-change mechanism follower main shaft careful follow proper sequence become confused some parts instance swash plate pre assembled factory although draw ing makes appear have assembled builder Step five extremely important smooth-running machine Follow Schluters instructions make sure starting shaft has absolute minimum run-out wobble completed machine has high-frequency vibration can almost always track problem down being starting shaft clutch assembly running out step six make sure clutch bell has 1mm end-play completely sembled mounted place Step seven critical happy engine trimming part 298 make sure remove just enough material clearance cooling air must guided around cylinder proper cooling Step eight too tough careful drill oversize holes tank threaded plate mounted bumps flat fit against tank wall threaded shank points away towards center tank sure use silicon seal tank connections want leakproof tank especially running pressure step ten make sure use per manent Locktite 3mm hub-mounting screw careful overtighten 2mm screws secure tail rotor hub pieces together Check binding bearings screws should snug tight point distorting hub forewarned hub binding ball bearings will soon go away tail rotor failure becoming imminent step eleven must decide much collective range will need have found Superior much easier set up use position B U-lever Superior very sensitive amount collective pitch used very definite collective Continued page 150 stanoaro frower ane snown aso available two new versions smaller Mini Panel flexible Dual Range Panel gives Option t-t/2 2 volts glow plug RC AerobaticsNan PutteRC Helicopters/Jolly __________________________________Continued page 52 GIANT RIC SCALE PLANS SOPhW55S*kOC14Slfl Se.52402epUSA SOPWITSTAKOSO2% 4 SpaSlSUSppasa AT-a 7SSAS24 0 SpRae pusa COSSEROI21RU nipSSSWpeUSA P45 CORSAIR2' SpSae20ppUSA CURTISSPaean V54 Se.Sat SeppUSA P SEARCAr2% IRU Se.RVSeppUSA Fiberglass Cowlings & Canopies acailable send Stamp detailed Brochures oar Giant scale Occessories Oar Plans sent Post-Paid within d5Al Nick Zirali 29 Edga Drine SnIRhtown NY 11787 USA writing advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/05
Page Numbers: 46, 47, 143, 146
Radio Control SPORT AEROBA TICS Ron Van Putte RETROSPECTION Ive involved RC nearly 30 years like expe rienced modelers tend overlook problems newcomers have Occa sionally get brought up short ginners question makes realize everyone understands things lot us take granted Such case mature individualbut novice modelerasked made difference whether Vs-in gap between horizontal tail elevator point realized dis cussion aerodynamics controls due also reminded discussion Don Lowe years ago about effects sealing gaps between wing ailerons As remember Don interested increasing roll rate Phoenix V After reviewing couple technical reports written about wind tunnel tests various wing/aileron combinations estimated could expect least 50% increase roll rate sealed wing aileron gap Well put Scotch tape bottom 46 Model Aviation What grown RC filers Its too cold outdoors fly go local gym sponsor AMA Delta Dart program get little stlck time themselves too Modelers photo members Floridas Eglin Aero Modellers Get load SIgs new Pattern kit Astro Hog lives again great design won fIrst 4 places RC 1958 Nats first really sucCessful low-winger Fred Dunn designed 1957 Hogs usually flew Torp 45s has Os 60 four-stroke Sigs Mike Greiz says its super fliergreat maneuvers verticals wing/aileron gap went out fly say startled increase roll rate understatement actually reduce amount aileron throw addi tion discovered benefit gap sealing never thought about airplane per formed loops much better Now cause benefit may immediately ap parent same reason roll rate affected wing/aileron gap seal also explains loops improved dont want get technical discus sion effects gap-sealing simple explanation order reason Continued page 143 may remember seeing photo before Ron talking about dihedrai reducers Wail underside Rons Phoenix 8 wing youre supposed iook seaied gap between wing aiieron time Ron uses 3M piastic tape teiis some tricks articie says seaiing wingl aiieron gap can make unbeiievabie Improve ments roii rateand ioops tool II 8th biennial Toumament Champions scheduied November 7-11 1g64 Las Vegas NV Once again Circus Circus Hotei/Casino sponsor internationai RC competition offering $125000 prize money 20 competitors seiected invited contest manage ment year competition ruies have siightiy changed hopes reviving interest historicai bipianas American barnstorming era promoting greater variety aircraft types fiying styiss fiight scores aii contestants flying bipianes wiii increased factor 10% contest site wiii RC Modei Airlisid North Las Vegas Regionai Park speciaiiy-buiit faciiity compiete runways aprons judges paviiion bieacher seating provisions power water Spectators invited free charge refreshments souvenirs wiii avaiiabie throughout contest Circus Circus Hotei/Casino now accepting room reservations event further information write Pubiic Reiations Dept PO Box 14967 Las Vegas NV 89114 Wiii seven-time winner Hanno Prettner repeat Scale its FAT rules observed trend multi-engines retractable land ing gears obvious result bonus system boosts flight scores types Skip Masts Lockheed Hercules Steve Saugers Stinson Trimotor Hal Parentis Savoia Marchetti Trimotor built take advantage bonuses fered Skip Steve will represent US 1984 Scale World Championships models fully expect competition other nations similar aircraft superficial observation might ex pect four-engine airplane would complex trimotor whereas opposite may true may decid ing factor choosing over other modeling subject Saugers Stinson could well rank complex multiengine models Modern four-engine tur boprop planes have clean exterior far simpler reproduce extra en gine adds another 5% bonus fourengine model appears lot tractive subject choice really looking simple airplane en gines Examples deHavilland Trans porter Twin Otter Dash-7 Aero spatiale Mohawk Ahrens AR 404 Shorts Belfast 330 Rockwell Shrike Transall C-160 Lockheed Hercules Partenavia Vic tor Fairchild Friendship BrittenNorman Trislander name few possible candidates Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Aerobatics/Van Putte Continued aaoe 47 wing does its job because net air pressure differential between top bot tom results lift drag takes solid barrier sustain pressure differen tial theres gap between wing aileron cant pressure differential between top bottom wing gap areas wing aileron vicinity gap suffer net loss pressure effect pronounced aileron deflected Sealing gap makes wing effective normal flight also ailerons deflected youve followed far may still wondering loops affected sealing wing/aileron gap problem gap between wing ailerons effects gaps arent always same miniscule difference gap side wing relative other side can cause lift wing other airplane will roll effect pronounced tighter loops because wing under heavier load gap effect amplified An airplane rolls loop bad news worse fact airplane doesnt always roll same direction Sometimes gap leaks other sometimes re verse Sealing gap eliminates problemand suddenly airplane does loops like its rails same beneficial effect occurs elevator becomes much effective gap sealed substantial reductions amount elevator throw required perform loops can expected Like solution problem theres often problem implementing solu tion Gap sealing no exception Most peo ple use tape seal gap often end up control system kind stiff sticky use technique minimizes problems thoroughly clean area gap rubbing alcohol thinner remove traces oil other residues would keep tape sticking properly tape use 3-M vinyl tape matches airplane color clear tape cant get color-match control surface de flected full Up position tape placed bottom wing horizontal tail doesnt show tape should wide enough least -in tape contact either side gap As control surface returned toward neutral tape tucked gap left way adhesive tape gap would make control surface motion sticky prevent sprinkle talcum powder through gap top until adhesive gap covered theres no stickiness excess gets blown out Depending much airplane flown tape will have replaced year As writing last sentence occurred some readers would like have airplane lasted long thats another problem Just before started writing months column received advance copy March 1984 issue received two months ago big news contained Competition Newsletter section case missed Radio Control Con test Board approved use 12 cu four-stroke engines RC Pattern effective 1 January 1984 vote changed 60% factor 50% factor computing maximum permissible size four-stroke engines relative two-stroke engines fore maximum four-cycle engine dis placement 103 cubic inches vote sure make several manufacturers 12 cu four-cycle engines very happy will also change lot fliers minds about airplane engine use Pattern competition during 1984 way March issue also con tained misspelling word column pet peeves include use pre ventative lieu preventive Sorry know better people Ive talked about Turnaround pattern afraid what will happen first few times try Continued page 146 May1984 143 4A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs 3 x 5 Easy Mounting Continued page 143 Only $2695 fear theyll get involved trying maneuvers theyll forget fly airplane fears well grounded pun us can remember terror first time tried certain maneuvers special bugaboo Three Outside Loops old Class B schedule top thought pushing down elevator would make heart feel like going thump right out chest exciting time both judges times question about whether Id bail out before did finally got hang start ing high altitude throttling back just before pushing over things werent happening quite fast As developed con fidence reduced altitude start maneuver until finally down supposed other words sneaked up maneuver Most us approach difficult maneuver same waywe sneak up makes good sense develop confidence fore trying something right way Turnaround pattern no different learning Turnaround pattern pilots will probably have take apart pieces practice pieces pattern con taining two three four maneuvers until comfortable Gradually everything can put together until pat tern complete course job learning Turn around pattern will take longer broken lots small pieces practiced until pilot very comfortable tricky part pilot forces him self move before comfortable isnt really learning much con tinued practice Good luck Turnarounders Ron Van Pu#e 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 146 Model Aviation ushering high-level Helicopter aerobatics Superior machine Eightiesa machine offer just loops rolls first thing came mind built Superior Schluter de signed machine made perform wear out too quickly Literally moving part supported ball bearings quality will give machine ability lastof course barring accidental damage Because describing necessary set-up required Superior takes quite bit space will use remainder column talking about assembling ma chine will cover flying next month Superior carefully packaged two boxes box mechanics second box contains now-familiar Schlu ter plastic cabin parts arrived safely packaging adequate Dieter made wise decision drew plan sheet helicopter mechanics drawing laid out two-sided exploded isometric showing parts loca tions drawing greatly aids assembly Building Superior should tough someone has few Helicopters un der belt especially has previously built Schluter product instruc tion booklet supplied adequate its just first-time builder may have some problems areas writer manual assumes builder familiar task hand point comes mind main rotor blade balancing instance manual states take grante4 basic technique bal ancing procedure known feel too vague since balancing rotors extremely important properly-flying machine Superior assembled 14 primary steps will now go over steps might need explanationor builder should careful Sequence deals securing pitch roll bellcranks side frames careful belicranks move freely no slop Sequence two deals applying swash plate pitch-change mechanism follower main shaft careful follow proper sequence become confused some parts instance swash plate pre assembled factory although draw ing makes appear have assembled builder Step five extremely important smooth-running machine Follow Schluters instructions make sure starting shaft has absolute minimum run-out wobble completed machine has high-frequency vibration can almost always track problem down being starting shaft clutch assembly running out step six make sure clutch bell has 1mm end-play completely sembled mounted place Step seven critical happy engine trimming part 298 make sure remove just enough material clearance cooling air must guided around cylinder proper cooling Step eight too tough careful drill oversize holes tank threaded plate mounted bumps flat fit against tank wall threaded shank points away towards center tank sure use silicon seal tank connections want leakproof tank especially running pressure step ten make sure use per manent Locktite 3mm hub-mounting screw careful overtighten 2mm screws secure tail rotor hub pieces together Check binding bearings screws should snug tight point distorting hub forewarned hub binding ball bearings will soon go away tail rotor failure becoming imminent step eleven must decide much collective range will need have found Superior much easier set up use position B U-lever Superior very sensitive amount collective pitch used very definite collective Continued page 150 stanoaro frower ane snown aso available two new versions smaller Mini Panel flexible Dual Range Panel gives Option t-t/2 2 volts glow plug RC AerobaticsNan PutteRC Helicopters/Jolly __________________________________Continued page 52 GIANT RIC SCALE PLANS SOPhW55S*kOC14Slfl Se.52402epUSA SOPWITSTAKOSO2% 4 SpaSlSUSppasa AT-a 7SSAS24 0 SpRae pusa COSSEROI21RU nipSSSWpeUSA P45 CORSAIR2' SpSae20ppUSA CURTISSPaean V54 Se.Sat SeppUSA P SEARCAr2% IRU Se.RVSeppUSA Fiberglass Cowlings & Canopies acailable send Stamp detailed Brochures oar Giant scale Occessories Oar Plans sent Post-Paid within d5Al Nick Zirali 29 Edga Drine SnIRhtown NY 11787 USA writing advertisers mention read about Model Aviation