Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS
Edition: Model Aviation - 1979/04
Page Numbers: 54, 55, 56, 57, 111, 112, 113
Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS
Edition: Model Aviation - 1979/04
Page Numbers: 54, 55, 56, 57, 111, 112, 113
Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS
Edition: Model Aviation - 1979/04
Page Numbers: 54, 55, 56, 57, 111, 112, 113
Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS
Edition: Model Aviation - 1979/04
Page Numbers: 54, 55, 56, 57, 111, 112, 113
Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS
Edition: Model Aviation - 1979/04
Page Numbers: 54, 55, 56, 57, 111, 112, 113
Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS
Edition: Model Aviation - 1979/04
Page Numbers: 54, 55, 56, 57, 111, 112, 113
Al Scidmore Sanity ml 2A Working within framework new AMA rules book Provisional Event sizeable group clubs established circuit stressed own modified rules encourage average flier thus bring new blood mushrooming event effort whomping successthis did Pylon Racing THE 197879 AMA official model aircraft competitive isnt necessary obtain documentation fact compe regulations describe RC 1/2A Pylon Racing bring refrigerated witches brew titive plane engine can obtained off Provisional first time new event strange sounding chemical names fuel shelf average hobby shop for average modeler presented buy latest hopped-up Schnuerle- $3790 writing $2896 event could enter modicum ported pumper equipped very expensive shopped around sounds like marvelous piloting experience small investment engine No tuned pipe necessary No vehicle attracting new blood compet still expect have decent chance special spin roll panic buttons itive pylon racing perhaps other com placing race two transmitter Nor two years research petitive events racing event can training ground other competitive events After cutting teeth 1/2A pylon getting bitten either racing bug competition bug modeler may go Quarter Midget Formiun 1 Pattern whatever wasa big upsurge interest 1/2A pylon 1978 bet 1979 will see activity Let tell about 1/2A pylon activities group fliers upper midwest experienced during 1978 flying season frigid February day 1978 Madison Area Radio Control Society MARCS hosted meeting repre sentatives RC clubs Appleton Fond Du Lac Madison Wisconsin plus Rockford Illinois discuss mation 1/2A pylon racing circuit concept establish sequence 1/2A pylon racing events held during 1978 flying season formulate uniform set rules events club felt would like have number pylon races available club members did feel own club could sponsor two three revolt remaining members would like use field other activities events unique problem clubs seem have broad diversity members interests encourage schedule variety events during year MARCS example 1978 spon sored three 1/2A pylon events two slopesoars thermal sailplane event biplane event combat event water-fly two sport fun-fly events plus picnic two scale sport static displayas well judging events local shopping centers plus RC car racing winter However add 1/2A pylon events schedule unreasonable Consequently formation racing circuit several adjacent clubs hosting races very attractive solution consensus club repre sentatives sent first WILLI meeting event should very appealing April 1979 55 Action No 2 pylon LeRoy Stuczynskis Streaker coming low right Frank Bakers Hare starting turn John Luck playing wae ohn flew GLH impressively become top winner 1978 WILLi circuit contest goes three five rounds People never competed anything building V2A racers Great way break Pylon too pit area activity Detween heats race Hares GLHs Streakers Whatchmacaliits ali over landscape race Madison Pressure verbotennot needed stock venturi Ever see softbaii launch Chap right making underhand pitch whilethe decathlon guy center making running launch Wing area limited 200 sq constant chord mum thickness Cross section 8 sq minimums 4 high 2 wide average modelerthe sport flier club members felt should some sanity rules regulations event Let winner race consistent comes prepared flies best course factors under direct control come cost price tags Consistency preparation practice result personal effort organizational meetings felt 197879 AMA provisional rules 112A pylon fairly reasonable could live within 1978 WILLI circuit rules restrictive AMA rules rather less maximum allowable nitro content fuel major item concern did run 1/2A pylon racing 1977 time feeling way under assortment rules regulations year did require use stock engines no maximum nitro content speci fied Some fliers used 10% some 15% some 25% found local hobby shop dusty pint can Fox 40% During first race no contest plane fastest As matter fact 8th 9th lap lapped some fliers twiceand used up fuel tank well elatedthe secret winning bigger tank nitro fuel Fortunately fellow club members brought back earth no limitations fuel everyone wished competitive would have use 50 60% nitro content fuels costly easily available local distributors hobby shops very hard engines Some less devoted average fliers would bail out leave 1/2A RC pylon hot-shots offer basic features 1978 WILLI rules group hoping conduct safe sane 1/2A RC pylon events along comments reasoning some personal opinions 1 Stock enginesabsolutely stock available everywhere low cost No special heads carburetors back plates modifications etc 2 Fuel supplied local club used participants 25% max nitro 25% nitro tricky needle provides plenty rpm can almost everywhere 50% nitro fuel expensive less readily available harder engines 3 The use commercial unmodified propellers deemed necessary average modeler could compete being specialist propeller techniques 4 A pressurized fuel system permitted necessary stock venturi used Difficulties keeping good needle valve setting throughout race arise venturi bored out jet holes venturi oversized tank poorly located vented constructed some cases giow plug needs replaced have some fliers have fuel difficulties usually trouble ironed out little collective head scratching beginning did have some races turned out solo tour course now four-plane heat very likely real four-plane race pressure fuel system introduces addi tional unneeded complication expense 5 Our 1978 rules minimum 200 sq wing area constant chord /8 minimum thickness excep tionally easy enforce wing-area rule feel restriction results limited number wing platforms would favor dropping constant chord require ment keeping v/i minimum thickness would admittedly difficult supervise 6 A minimum fuselage cross section 8 sq minimum height 4 width 2 required minimum fuselage Continued page 111 56 Model Aviation populardeslgns circuit isthe drawing took first second third race GLH authors Hare racersee 2-view flown overall second season 0 510 SCALE 050 Iiiliiiiii SCALE TOWER IS INVENTORY J0 Ann Felty left Shirley Montague right Warehouse Managers showing largest inventory K&B 61 RC Engines World time picture taken think looks like lot engines YOURE RIGHT have over 5000 engines different types stock given time Its in-depth stocking assures anyone has what youre looking its Tower Hobbies WORLDS LARGEST RC INVENTORY Right now Tower Hobbies has over ONE MILLION DOLLARS RG inventory stock 29000 square foot facility just loaded over 3000 different items over 130 manufacturers specialize exclusively RC oriented products can give best selection best service possible No matter what RC needs have can enjoy convenience shopping Worlds largest RC hobby shop never having leave quiet comfort own home close TOLL FREE telephone mailbox YOU NAME IT WE HAVE IT given time stock over 1500 radios different frequencies brands gimbal stick configurations single channel seven channel stock over 120 different types engines have thousands airplane kits accessories go whether want 1AA racers trainers pattern kits scale aircraft pylon racers biplanes sport planes multi-engine planes gliders carry kits made wood foam fiberglass stock helicopters over 20 different cars gas electric over 50 different types boats Plus warehouse tools coverings adhesives bat teries chargers starters hardware kits paint etc EVERYTHING YOU NEED WE STOCK IN DEPTH Theres reason have over ONE MILLION DOLLARS RC inventory stock want have ready immediate delivery know sometimes demand simply exceeds availability no matter much may want something sometimes just cant found make possible effort have tremendous buying power able buy huge production runs hard-to-get items whenever theyre available frequently purchase up years supply some items want have wont ever tell dont have dont need dont make excuses go absolute extremes make sure DO HAVE IT FOR YOU customers far important priority Tower Hobbies fill order time working YOUR order thats important consideration have working order resources just you can get what want want lowest possible price think RC think Tower Call us today TOLL FREE RC modeling needsl TOWER HOBBIES IS THE ONLY RC COMPANY YOULL EVER NEED @ TOWER PO BOX 778 CHAMPAIGN ILLINOIS 61820 CONTINENTAL UNITED STATES EXCEPT ILL INOISI 800-637-7686 HOBBIES 217-384-1010 ILLINOIS RESIDENTS ONLY 800-252-3336 take chance Replace HP 40 better yet Perry carb use Perry made K&B 40 aluminum bushing necessary fit engine bushing available market has made Another modi fication Perry carb longer throttle arm increase throttle movement handle exhaust extension increased performance Performance increased decreased extension does keep lot oil off exposed bellcrank Also extension heat exhaust breaks rubber bands hold tank Flying After engine break-in period pre-flight check have handle hand swing handle left bringing leadouts fully forward Increase throttle full locking leadouts place signal release Climb should gradual engine hesitation MOl grooves well Magician through fast laps After seventh lap decrease throttle slowly leadouts trip plane will climb 3 5 due angle changes lines use type bellcrank shown use J Roberts bellcrank plane will lose attitude Low-speed flight can described smooth predictable Its very easy handle large wing nose-high attitude can achieved landing ap proach should gradual using throttle control altitude wfien mousetrap hook snags line stays snagged would like say design MOl ultimate Profile Carrier plane have build way impossible Ill just say try possibly using own ideas improve would glad hear improvements answer questions MOl truly natural Id like finish passing some observations Profile event though Im relatively new carrier flier geographically isolated intense carrier activity Ive able form some valid opinions few brief random thoughts An effort has made make Profile Carrier beginners event beginners skill ability underestimated Profile Carrier beginners event good place begin Beginners look up experienced fliers few words praise sincere interest equipment will encourage beginner other single factor Finally people fly Carrier greatest Get know 1/2A Pylon/Scidmore continued page 56 requirement has triple function First tends equalize drag associated fuselage Second tends produce aircraft bears some semblance real racing airplanes Third provides suffi cient fuselage area accommodate usual receiver servos battery packs having buy ultraminiature expensive components use canopies cheeks etc 4 height 2 width allowed provided extensions basic body minimum base width inch would enlarge width 2 minimum allow use larger servos side side minimal fuselage would increase frontal area about 2 3% 7 minimum weight requirement kept 20 ounces felt reducing weight limit would have detrimen tal effects would reduce induced drag increasing speed kinetic energy requiring quicker reaction time both pilot spectator event emergency would encourage use expensive ultraminiature compo nents well weaker constructiona detriment safety 8 Bearing mind racers races associated large clubs metropolitan areas number person nel required race kept minimum minimum crew would con sist judge pylon manning start-finish line minimize confusion simplest procedure cuts announce con clusion race individual makes cut gets point two cuts scores zero First second third place awarded pilots scoring no cuts Any scheme allows flier make up cut pylon flying another lap implies April1979 111 communication pylon judge pilot Such communication requires either additional personnel additional equipment signalling cuts 9 experience landing gear wheels 1/2A aircraft proved opera tionally unnecessary since average flier operates grass dirt field wheels unnecessary requirement look like real race aircraft landing gear would necessary 1/2A airplanes landing gear small wheels grass field end up upside down broken fin too landings remaining WILLI circuit rules part agreed AMA provi sional rules seemed quite reason able success WILLI circuit measured flier participation seems good races held various member clubs three four five rounds kept participants busy about 11 am 4 pm pre-race checkout adjustments practice flying rac ing usual chatter interchange between members different clubs Mea sured growth interest amongst MARCS members season phe nomenal success modelers sel dom ever entered club contests will building racer next year already have acquired flew pylon year annual MARC S club auction prices paid some used l/2A pylon racers about equal price l/2A pylon racer kit already planning WILLI circuit racing events next year interest seems remain high other WILLI circuit clubs well feel high interest appeal l/2A pylon racing partly due accessibility competitive equipment ease can get started activity can find equipment local hobby store distributor airplane has built good kits available well plans scratch building engine same TD05 1 competition usingno modifi cations contests same fuel used some things learned about fuel tanks break-in propel lers launching flying course etc thats expected average flier does have good chance finish places especially fellow competitor seems have act together time stumbles bit After operating rules eight formal races plus number informal events offer following observations opinions plus analysis entry data number races After eight races John Lusk Madison emerged clear leader Johns GLH fast faster Johns engine wasnt hottest contests oh what course flew found given reasonably aircraft engines fuels fliers have capability place race However flier consistently gets engine started launches well flies consistently tight course will win races Race times 25% fuel around 2-minute mark few down 110 seconds Generally races timed since officials very busy already majority aircraft kits large number 47% original designs kitted planes part modified GLH kitted ACE 3 9% records indicated average aircraft weight 223 oz interesting note 25 oz ship first place race second another Bob Johnson Fond Du Lac always seemed flying new original race some times gave him trouble allowed use Kirn-Kraft needle valve stock venturi 65% fliers used However finished well up standings felt stock Cox needle valve perfectly adequate Cox 5-4 black plastic propeller used 60% contest entrants No other particular pro peller used frequently enough men tion Propeller balancing absolute must TD 051 wasnt engine flown few TD 049s contestants would tell TDs created equal Some really hum right out box become great after some considerable running time few dogs never make Borrow tachometer compare numbers fellow fliers tachometer using Cox black 5 % nitro Cool Power fuel racing quality stock en gines would provide steady static tach ometer reading between 18000 20000 rpm figures vary greatly tem perature humidity Hand launching seemed problem 112 Model Aviation SCALE CLAStjICS Plans & Construction Manual CURTISS HAWK PEE STINSONRELIANT 5619 Scala 946 Span 22nOIc Scale 126 Span62560 2Scala 63 Span 612602Scale a4Span1560 II Scale 4712Span 610601WScala 63 Span61260 CURTISS GOSHAWK File 2 Scale 63 SpanS15 CURTISS GULFHAWK lA . 2Sca1 63 Span SiBoc / Scale 94 Span s300c plaaa Aaa sine p. 0d ic pcataa Candling. 0dnrde US Add SCacMaCC pawn, 10 Richard G Barron1213 Holly SprIng Ln Grand Blanc MIchIgan 48439 Bend Sic,- CamSal lnlnncalcn -MAMMOTH SCALERSWe have engine mounts WEBRA 91 SUEVA 15 MOKI 15 QUADRA engines plus complete line mufflers Also available nifty throttle control unit QUADRA engine Write illustrated catalog prices Sold DIRECT ORDER ONLY Immediate shipping orders Quarter Headquarters PO Box 12321San Francisco Ca 94112 Another dramatic launching shot seems show Madisons threearmed Frank Baker getting off two Jobs once Maybe hes Ball Minimum weight requirement is2O oz No gear wheels some new fliers permitted running launch assistant great ly helped experiencing difficulty Two problems arise launch torque reaction left second engine leans out quits com pletely hard launch solution first hard javelin type launch second problem eased soft launch Experimentation air pickup position tank height has usually helped us solve problem airplane nose dropped just prior launch engine can made load up some allowing such hard throw some accused making first pylon muscle power alone summary have operated largely within framework provided AMA 197 879 Provisional Rules l/2A Pylon have lots fun successful season have enticed number average fliers competitive event now have another vehicle getting aver age modelers interested competitive racing event feel should jealously guard against attempts substantially change its essential nature lesson past history available process present AMA events have evolved very simple good idea very specialized event small elite number participants per mitted specialists will take over refine event around capabilities interests average modeler will have machine shop extra dollars ac cess special parts fuels have skill experience construct competi tive racing machine larger communities will still enough fliers race smaller communities interest will dwindle until spark goes out Certainly name game racing let us keep original objectives mind keep event average modeler inexpensive easily constructed planes Chambermaid/Henn continued page 50 screw up like Wakefield fly 005 about 4 minutes some miracle about hour later retrieved model approxi mately mile downwind released flown over small forest several communities landed open area vicinity Needless say kept grounded until contest easily won Shell Greve Races placed third Scale During morning meet still damp air two flights clocked about 145 another 159 model wasnt flown again year until Spring 1978 FAC meet again won Shell Greve Races During July 1978 entered FAC Nats held Johnsville PA first day meet 15-minute thermal flight earned Chambermaid second place Scale next day nudged Bob Haden Jeanette PA has already won three 1ST PLACE Helicopter trophies Tn Valley Static Show Pittsburgh PA WRAMS RIG Jam boree White Plains NY Toledo Weak Signals 24th R/G Exposition Toledo Ohio super sharp highly modified Kaven Bell Jet Ranger Bob says As can see photo Formula-U really helped make highly detailed paint job turn out great base color Flight Aluminum Raven Black nose Metallic Red Fiery Orange Aviation Yellow trim Im happy tell Formula-U stands up tool Prior photo model flown 6 times plus friction wear transporting shows events over country happy proud Bob pleased Formula-Us perform ance hope will give try next model Heres few winning reasons might consider 18 popular Gloss Metallic Flat flight line colors matching brush spray Quick Drying One-Step System OneCoat Coverage Higher Gloss Finish Fuel-Proof Mar-Resistant Lightweight Super Tough AND matches Pactras Solarfilm Colors NEED FINISHING HELP! Send $100 complete step-by-step fully illustrated instruction book covering PACTRA FINISHING SYSTEMS 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 out first place few seconds Shell own Mr Smoothie contestants may fly two planes event caught some good air flight maxed son Billy talked using Smoothie instead better flying Cham bermaid Thompson Race stiff breeze blowing models launched dangerously close edge field turned out Billy right since Smoothie flew beyond field tree disqualified Chambermaids latest accomplishment winning Shell Greve Races during rainstorm October 1978 FAC bash competition encoun tered Connecticut meets about toughest found anywhere Winning kind nibber FF event Yankee territory never easy Construction model straight forward no unusual difficult aspects Choice wood paramount Use lightest contest balsa can find fuselage formers nose block wing ribs wing tips rudder stabilizer parts rest components constructed slightly firmer wood exception fuselage longerons hard balsa fuselage has flat sides makes easy assembly Once assembled sides can joined box-like fashion April1979 113 can winner too! WITH FORMULA-U POLYURETHANE FINISH FOR GAS POWERED MODELS