PROFILE SCALE activity update During past several years Profile Scale event has grown considerably popularity Most clubs have constant promoters CL Scale also including Profile Scale list con test events according newsletters re ports received Profile Scale category has also included mall trade shows around country rules governing event vary section country another concerted ef fort has made George Gaydos Gar den State Circle Burners GSCB New Jersey bring some sort stability commonality rules being used April 1984 column introduced set Profile Scale event rules created GSCBs rules written effort entice Stunt flier flying other events join Scale modeler events As result publication rules asked GSCBs copies rules score sheet happy provide Pro file event has become popular some hoped-for goals original rules did mate rialize George Gaydos primary mover devel opment 05CR Profile Scale rules writes late 1986 saw need make some im portant changes rules George says appears Stunt interest never really came up expectations originally thought felt Profile Scale event would great place Stunt flier continue Stunt interest progress same time pursue possible Scale craving least develop sort started way quickly dissipated looked like main concern event going stay Scale-minded modeler after Another factor concern possible bonus points multiengine models Several Scale modelers East Coast actively flying multiengined airplanes specif ically AMA Precision Scale event ex pressed desire bonus points Profile event Being multiengine model fan myself made good sense incorporate such bonus since know certainly longer construction period involved well need extra ingenuity installing flaps throttle other operational featuresnot mention ever-present risk engine failure risk am also referring possible incompleteness scale options almost certainly unperform ed stunt maneuvers due possible engine failure during flight Some other changes made event rules may appear changes instead better/clearer definltions rules concern ing areas weight engine requirements proof scale color markings flight op tions Another area rules has given considerable attention profile fuselage self column pictures latest Pro file Scale model Douglas B-26B Invader used during Korean War era scratchbuilt has 64-in wingspan powered two OS MAX-H 60s weighs 10 lb has following operational features throttle con trol fuel shutoff flaps bomb drop rockets photo flares parachutes PLEASE NOTE under GSCB rules definition profile follows Any solid-material fuselage nacelles ranging thickness between ilt-up former-type construction permitted though possible keep within fuselage thickness limits rule assure pro file concept have always known Control Line stays intact Therefore certain scale operations permitted take place Continued page 156 Profile Scale examples Avro Lancaster L creation Steve Curran Poughkeepsie NY powered four Cox Black Widow 049s F7F Tigercat R built Augie Buffalano Clifton NJ weighs about 3 lb uses twin Fox 19s power February 1988 63 ControL Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 George Gaydos shows us prime example Profile Scale new Douglas 5-265 vader Model big spans 64 weighs 10 lb uses two OS Max 60s power Closeup cockpit area shows detailing cockpit rivet/panel lines GSCB rules allow fuselage/na celle 1-in thick prohibit retracts bomb bay door oepration revolving turrets etc Bill discusses Profile Scale column Photos Bill Boss George Gaydos pert ecf Piifl K tern recognizes higher pressure start flight tank full much lower pres sure end fuel head pressure little nothing Since engines needle valve setting fixed will run leaner end flight tank nearly empty begin ning flight tank full Most familiar phenomenon take consideration setting needle ny bit rich start avoid overlean set ting end Now take look sketches BI through B4 illustrate uniflow principle Note vent tube extends deep container nearly fluid outlet tube case top view Stunt tank position nearly adjacent end fuel pickup tube Neatly stated uniflow principle says As long no other sources air system pressure fluid outlet will equal distance head between end uniflow tube fluid outlet notwith standing total amount fluid con tainer What means us no matter full nearly empty tank may pressure sensed engine will remain con stant engine will run consistently same speedwithout leaning-out tendency characteristic suction system sand sand get humps bumps Try Easy SanderTM See Ihe Difference Made select wood sotremely hght sander held lull sheet sand paper Flat sanded accurate sanding surface Large flat surfaces sanding area LH 50 $095 na Note once fluid level below uni flow tube system will revert straight suc tion ensure uniflow system retains its constant input engine certain uniflow tube located very close fuel pickup tube About % forward directly inboard pickup tube normal might interesting note uni flow tube located below outboard fluid outlet will no head pressure fluid flow independent fuel head pressure would cease Any flow Out tank would result engine suction As far en gine concerned end uniflow tube tank Move end tube engine thinks entire tank has moved utilize two delivery systems use help trim airplane optimum per formance exception Wingover ma neuvers requiring the engine last half patternfrom Square Eight ship little heavier ideal could employ suction system know could depend little zip end pattern other hand prefer steady en gine speed throughout flight could use enough Try Easy DrakeoM See Ihe Difference totrewely easy instali Hard find spring steel sod fiber washers Braking action rewains constant during repeated uniflow youre little short power dont want speed end flight using uniflow will allow use larger-diameter venturi engine power fear engine would able draw fuel end run tanks set up accommodate either uniflow suction capping over flow tube have normal uniflow system cap uniflow tube leave overflow open system becomes suction Let em phasize uniflow work overflow must capped both tubes left uncapped system will act pure suction system As matter policy always cap either uniflow overflow tube addition tubes bent slipstream ensure airflow doesnt create siphoning action draw out raw fuel using commercial tank short vents cut short piece fuel tub ing 450 angle install vent tube facing wind important since little bit siphoning may see ground will increase air create negative pres sure tank may cause engine go lean about muffler pressure Certainly Try out may may superior certainly no cure-all can generally expected im prove consistency engine run virtue maintaining constant pressure vent tube likely improve suction sys tem uniflow system Generally speaking high-pressure systems such bladders crankcase pressure taps useful Stunt ships appropri ate applications seeking maximum rpm using intakes too large provide adequate suction classic four-cycle Stunt run doesnt respond well such system Leave em go-fast boys Finally tanks should mounted solidly Fuel foaming should problem nose ship properly constructed vibration kept minimum tank isnt positively lo cated its Murphys law waiting happen can move will move Gotta go now Fly Stunt CL Scale/Boss Continued page 63 directly related fuselage engine nacelles Operations such landing gear retrac tion wheel well doors bomb bay doors re volving turrets permitted event Continued page 158 get shaky whenDo hate field isnt longto install hinges Try Easy HingesnM See Ihe Difference single slot few drops sf C/A gtue its done No gouging pinning hinge pins worry about Incredibly strong Virtually indestructible useLH tOt 20 ninoes 5200 eu 0 Three sizes lIt 5/32 3116LO too tot 102 SOtna~eg4 ERSY5RNDER EA5Y DRAKE EAYHINE nM OKnMP0 Box 1743 Marcos CA 92069 156 Model Aviation Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing Ph 419-797-2208 P0 Box 2480 usky Ohio 44870 #D00 THIRTY-FOURTH ANNUAL RADIO CONTROL EXPOSITION APRIL 8 9101988 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending self-addressed business size 4/ex9 envelope TICKETS 38235 Castle Romulus Ml 481 74 orders above 5 tickets must include extra postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postage Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1988 sales final non-refundable orders will returned mid-March have included adequate postage will also contain program TICKETSAREALSOA VAILABLEA T THE DOOR Will Nave Traditional Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA RulesI MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Ruleal PATTERN PLANE SPORT MONO-PLANE non-scale models onlyl SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED -muivnea rerrormance ystem TOP PERFORMANCE K&B ENGINES Airplane Manse K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER P0KV THINNER K&B SUPER FOXY PRIMER K&B SUPER P0KV PAINT K&B MIXING CUPS closing would like indicaEe East contestants have found updated rules easy live telling us t would like thank have supported GSCBs Profile Scale event date will happy answer questions send copy updated rules youre interested running event Scale meets Send inquires George Gaydos Jr 8 Dapp Court Elmwood Park NJ 07407 would also like remind Scale column YOUR column urge send pictures articles item relating CL Scale activity help Bill Boss efforts masntsin CL Scale popularity Whether seasoned Scale veteran newcomer am sure Bill will find way use material profile kit survey run Cam Martin Virginia Beach VA possibility Bob Smurthwaite J Roberts Precision Scale Air craft producing excellent profile kits Grumman FSF-2 Bearcat Douglas AD-6 Skyraider Chance Vought F4U-5 Corsair has completed am happy announce Smurthwaite will making limited production run kits Anyone interested obtaining above kits should send orders directly J Rob ert Smurthwaite PO Box 2947 La Grande OR 97850 Cost kits will bess follows Bearcat Skyraider $36 Corsair $42 $2 shipping charge per model also applies Visa Master card payment OK no CODs allow four five weeks delivery three kits excellent Profile Scale event Hint workshop Bob Furr taken Orbiting Eagles Newsletter Omaha NE This hint concerns balancing storage propellers bought wood props last fall may have carefully balanced put back plastic bag hung up hook wall work shop Bob says things may realize wood props contain moisture can migrate low end prop stored vertical position full-size aircraft wood props stored horizontally avoid blade becoming heavier due moisture migra tion secret obtaining well-balanced props balance just before useor store horizontally used some time Please send correspondenceand especially photosrelating CL Scale address shown beginning column bat meet know planning did little good seems inevitable its going hap pen lets make See fancy ourselves fighter pilots zip ping around sky never taking hit should thinking terms flying B-17s Remember Flying Fortress returned WW II mission half wing missing two engines out gaping holes over Yeh yeh get idea Well call bump-and-run Combat No fleet models neededjust patch up 01 Paint between matches fly another mis sion Equipment up little abuse Guess wont win today object would still score points cut ting streamer kill Fast Combat occasional bounce off opponents model might soften him up just enough get few extra points doesnt have dan gerous either tighter pilots circle would avoid having props cut lines safety wire engine bellcrank would keep heavy pieces hooked lines Half-A Combat already flown way brings giggles crowd contes tants other event small planes rarely damaged much during collision its big deal hit few times during match Fast Combat models really too fast powerful type flying since have lot mass slashing prop could tear up strongest structure Slow Combat ships better game 15s best cause little props least amount dam age try cut off Ron Colombos magnesium tail boom youll probably just break prop anyway Current technology aimed toward highperformance model destructs upon impact ground another model Theyre built go fast turn tight slight loss performance tremendous increase impact re sistance could made As FAI restrictions might performance wouldnt drop much extra benefit would forgiving model event operator error Thats hardest thing about learning Control Line flying Any littie error model ground over have build new plane mistake Imagine learning drive crashing car time let clutch out too roughly Now before rush out ban diesel buses 158 Model Aviation CL Combat/Johnson Continued page 64 presented Weak Signals R/C Club Toledo Ohio causing such idea bump-and-run think about last thing perception Combat flown based what youve seen over years flying What happens very good pilot adopts tacticor shall say tactical flying call Europeand person becomes very successful point dominating Combat Most people whove tried tactic have succeeded destroying both models consistently gaining advantage racking up pretty poor image themselves As know next FAI Control Line World Championships will Kiev Russia later year Im sure lot us would like go getting Russia seems little diffi cult say flying England past team supporters have often treated like second-class citizens during visits foreign lands interested going Russian meet Id suggest make tentions known good folks AMA HQ encourage provide good supporter package possible wider base support FAI pro gram betterand what better way get Combat fliers attend World Champs possible see themselves Theyll selling FAI program AMA after members NRA National Rifle Association know constant pressure antigun groups Another AMA American Motorcycle Associationrecently went through battle senator Mis souri wanted ban superbikes Now may care about guns superbikes can insert words Combat airplane places lot hot air coming Out US capital would have same Combat models exciting superbikes potentially lethal gun day family sport may come under attack too NRA great help mo torcyclist fighting against some really off-thewall legislation should looking friends possible coalitions should gov ernment 60 Minutes turn sights us CL Navy Carrier/Perry Continued page 65 event Yak-9 course did see car rier action testing since Soviet Union no aircraft carriers until Seventies Yak outlines however quite similar Bell Airabonita Airacobra Yak can easily modified resemble two Bell aircraft Before someone else writes let state P-39 Airacobra also legal Carrier fly ing having tested purpose British Royal Navy P-51 Mustang also tested carrier suitability US Navy Navy operated variety Mustangs various times list cluded P-51A P-51B P-51C P-51D P-51H B C models saw actual car rier suitability testing P-51B P-51H fitted arresting gear did per form simulated takeoffs landings Ship Experimental Unit Mustin Field PA P-51D equipped arresting hook landed took off aircraft carrier Shangri-La November 1944 G-S Kits possibility G-S kits would p U U U U U U U I I U U U U U U U U U U U I I U U U U I U U U U U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep peak performance longer Satisfaction Guaranteed SIG CHAMPION 2-STROKE *FUELI FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON55 GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800U 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500I 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM4-STROKE FUEL 10% Nitromethane $415$550$1395$29500 15% Nitromethane$425 $625 $1595 $35900 CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeI money can buy also use real 100% pure Nitromethane get full measure youveI paid based honest percentage-of-volume method percentage weight SIG fuels contam 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil Ufor maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price ButI dont take word try some judge Uyourself p,ces suSiect chaoge notice See dealerfirst available order direct Call 800-247-5008 fortoll free orders Latest Catalog $300 ANUFACTURING CO Montezuma IA 50171 nes running February 1988 159 WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need tn packagel Wet Cell & Cycler-Charger$19995 Fits 48V Rx 96v Ta packsPlus $5 S&H Others available write callt~e Regular Model$3995 field kit smallPlus $2 S&H electric boat batteriesSpecify 6 12 24V Heavy Duty Model$4995 sport winch large boat andPlus $250 S&H electric power charging batteriesSpecify 6 12V CaRa ProductssAse ion edormahoc PO BOX 221 605-957-5924Deaien oquloes tootledCanton SD 57013
Edition: Model Aviation - 1988/02
Page Numbers: 63, 156, 158, 159
PROFILE SCALE activity update During past several years Profile Scale event has grown considerably popularity Most clubs have constant promoters CL Scale also including Profile Scale list con test events according newsletters re ports received Profile Scale category has also included mall trade shows around country rules governing event vary section country another concerted ef fort has made George Gaydos Gar den State Circle Burners GSCB New Jersey bring some sort stability commonality rules being used April 1984 column introduced set Profile Scale event rules created GSCBs rules written effort entice Stunt flier flying other events join Scale modeler events As result publication rules asked GSCBs copies rules score sheet happy provide Pro file event has become popular some hoped-for goals original rules did mate rialize George Gaydos primary mover devel opment 05CR Profile Scale rules writes late 1986 saw need make some im portant changes rules George says appears Stunt interest never really came up expectations originally thought felt Profile Scale event would great place Stunt flier continue Stunt interest progress same time pursue possible Scale craving least develop sort started way quickly dissipated looked like main concern event going stay Scale-minded modeler after Another factor concern possible bonus points multiengine models Several Scale modelers East Coast actively flying multiengined airplanes specif ically AMA Precision Scale event ex pressed desire bonus points Profile event Being multiengine model fan myself made good sense incorporate such bonus since know certainly longer construction period involved well need extra ingenuity installing flaps throttle other operational featuresnot mention ever-present risk engine failure risk am also referring possible incompleteness scale options almost certainly unperform ed stunt maneuvers due possible engine failure during flight Some other changes made event rules may appear changes instead better/clearer definltions rules concern ing areas weight engine requirements proof scale color markings flight op tions Another area rules has given considerable attention profile fuselage self column pictures latest Pro file Scale model Douglas B-26B Invader used during Korean War era scratchbuilt has 64-in wingspan powered two OS MAX-H 60s weighs 10 lb has following operational features throttle con trol fuel shutoff flaps bomb drop rockets photo flares parachutes PLEASE NOTE under GSCB rules definition profile follows Any solid-material fuselage nacelles ranging thickness between ilt-up former-type construction permitted though possible keep within fuselage thickness limits rule assure pro file concept have always known Control Line stays intact Therefore certain scale operations permitted take place Continued page 156 Profile Scale examples Avro Lancaster L creation Steve Curran Poughkeepsie NY powered four Cox Black Widow 049s F7F Tigercat R built Augie Buffalano Clifton NJ weighs about 3 lb uses twin Fox 19s power February 1988 63 ControL Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 George Gaydos shows us prime example Profile Scale new Douglas 5-265 vader Model big spans 64 weighs 10 lb uses two OS Max 60s power Closeup cockpit area shows detailing cockpit rivet/panel lines GSCB rules allow fuselage/na celle 1-in thick prohibit retracts bomb bay door oepration revolving turrets etc Bill discusses Profile Scale column Photos Bill Boss George Gaydos pert ecf Piifl K tern recognizes higher pressure start flight tank full much lower pres sure end fuel head pressure little nothing Since engines needle valve setting fixed will run leaner end flight tank nearly empty begin ning flight tank full Most familiar phenomenon take consideration setting needle ny bit rich start avoid overlean set ting end Now take look sketches BI through B4 illustrate uniflow principle Note vent tube extends deep container nearly fluid outlet tube case top view Stunt tank position nearly adjacent end fuel pickup tube Neatly stated uniflow principle says As long no other sources air system pressure fluid outlet will equal distance head between end uniflow tube fluid outlet notwith standing total amount fluid con tainer What means us no matter full nearly empty tank may pressure sensed engine will remain con stant engine will run consistently same speedwithout leaning-out tendency characteristic suction system sand sand get humps bumps Try Easy SanderTM See Ihe Difference Made select wood sotremely hght sander held lull sheet sand paper Flat sanded accurate sanding surface Large flat surfaces sanding area LH 50 $095 na Note once fluid level below uni flow tube system will revert straight suc tion ensure uniflow system retains its constant input engine certain uniflow tube located very close fuel pickup tube About % forward directly inboard pickup tube normal might interesting note uni flow tube located below outboard fluid outlet will no head pressure fluid flow independent fuel head pressure would cease Any flow Out tank would result engine suction As far en gine concerned end uniflow tube tank Move end tube engine thinks entire tank has moved utilize two delivery systems use help trim airplane optimum per formance exception Wingover ma neuvers requiring the engine last half patternfrom Square Eight ship little heavier ideal could employ suction system know could depend little zip end pattern other hand prefer steady en gine speed throughout flight could use enough Try Easy DrakeoM See Ihe Difference totrewely easy instali Hard find spring steel sod fiber washers Braking action rewains constant during repeated uniflow youre little short power dont want speed end flight using uniflow will allow use larger-diameter venturi engine power fear engine would able draw fuel end run tanks set up accommodate either uniflow suction capping over flow tube have normal uniflow system cap uniflow tube leave overflow open system becomes suction Let em phasize uniflow work overflow must capped both tubes left uncapped system will act pure suction system As matter policy always cap either uniflow overflow tube addition tubes bent slipstream ensure airflow doesnt create siphoning action draw out raw fuel using commercial tank short vents cut short piece fuel tub ing 450 angle install vent tube facing wind important since little bit siphoning may see ground will increase air create negative pres sure tank may cause engine go lean about muffler pressure Certainly Try out may may superior certainly no cure-all can generally expected im prove consistency engine run virtue maintaining constant pressure vent tube likely improve suction sys tem uniflow system Generally speaking high-pressure systems such bladders crankcase pressure taps useful Stunt ships appropri ate applications seeking maximum rpm using intakes too large provide adequate suction classic four-cycle Stunt run doesnt respond well such system Leave em go-fast boys Finally tanks should mounted solidly Fuel foaming should problem nose ship properly constructed vibration kept minimum tank isnt positively lo cated its Murphys law waiting happen can move will move Gotta go now Fly Stunt CL Scale/Boss Continued page 63 directly related fuselage engine nacelles Operations such landing gear retrac tion wheel well doors bomb bay doors re volving turrets permitted event Continued page 158 get shaky whenDo hate field isnt longto install hinges Try Easy HingesnM See Ihe Difference single slot few drops sf C/A gtue its done No gouging pinning hinge pins worry about Incredibly strong Virtually indestructible useLH tOt 20 ninoes 5200 eu 0 Three sizes lIt 5/32 3116LO too tot 102 SOtna~eg4 ERSY5RNDER EA5Y DRAKE EAYHINE nM OKnMP0 Box 1743 Marcos CA 92069 156 Model Aviation Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing Ph 419-797-2208 P0 Box 2480 usky Ohio 44870 #D00 THIRTY-FOURTH ANNUAL RADIO CONTROL EXPOSITION APRIL 8 9101988 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending self-addressed business size 4/ex9 envelope TICKETS 38235 Castle Romulus Ml 481 74 orders above 5 tickets must include extra postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postage Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1988 sales final non-refundable orders will returned mid-March have included adequate postage will also contain program TICKETSAREALSOA VAILABLEA T THE DOOR Will Nave Traditional Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA RulesI MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Ruleal PATTERN PLANE SPORT MONO-PLANE non-scale models onlyl SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED -muivnea rerrormance ystem TOP PERFORMANCE K&B ENGINES Airplane Manse K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER P0KV THINNER K&B SUPER FOXY PRIMER K&B SUPER P0KV PAINT K&B MIXING CUPS closing would like indicaEe East contestants have found updated rules easy live telling us t would like thank have supported GSCBs Profile Scale event date will happy answer questions send copy updated rules youre interested running event Scale meets Send inquires George Gaydos Jr 8 Dapp Court Elmwood Park NJ 07407 would also like remind Scale column YOUR column urge send pictures articles item relating CL Scale activity help Bill Boss efforts masntsin CL Scale popularity Whether seasoned Scale veteran newcomer am sure Bill will find way use material profile kit survey run Cam Martin Virginia Beach VA possibility Bob Smurthwaite J Roberts Precision Scale Air craft producing excellent profile kits Grumman FSF-2 Bearcat Douglas AD-6 Skyraider Chance Vought F4U-5 Corsair has completed am happy announce Smurthwaite will making limited production run kits Anyone interested obtaining above kits should send orders directly J Rob ert Smurthwaite PO Box 2947 La Grande OR 97850 Cost kits will bess follows Bearcat Skyraider $36 Corsair $42 $2 shipping charge per model also applies Visa Master card payment OK no CODs allow four five weeks delivery three kits excellent Profile Scale event Hint workshop Bob Furr taken Orbiting Eagles Newsletter Omaha NE This hint concerns balancing storage propellers bought wood props last fall may have carefully balanced put back plastic bag hung up hook wall work shop Bob says things may realize wood props contain moisture can migrate low end prop stored vertical position full-size aircraft wood props stored horizontally avoid blade becoming heavier due moisture migra tion secret obtaining well-balanced props balance just before useor store horizontally used some time Please send correspondenceand especially photosrelating CL Scale address shown beginning column bat meet know planning did little good seems inevitable its going hap pen lets make See fancy ourselves fighter pilots zip ping around sky never taking hit should thinking terms flying B-17s Remember Flying Fortress returned WW II mission half wing missing two engines out gaping holes over Yeh yeh get idea Well call bump-and-run Combat No fleet models neededjust patch up 01 Paint between matches fly another mis sion Equipment up little abuse Guess wont win today object would still score points cut ting streamer kill Fast Combat occasional bounce off opponents model might soften him up just enough get few extra points doesnt have dan gerous either tighter pilots circle would avoid having props cut lines safety wire engine bellcrank would keep heavy pieces hooked lines Half-A Combat already flown way brings giggles crowd contes tants other event small planes rarely damaged much during collision its big deal hit few times during match Fast Combat models really too fast powerful type flying since have lot mass slashing prop could tear up strongest structure Slow Combat ships better game 15s best cause little props least amount dam age try cut off Ron Colombos magnesium tail boom youll probably just break prop anyway Current technology aimed toward highperformance model destructs upon impact ground another model Theyre built go fast turn tight slight loss performance tremendous increase impact re sistance could made As FAI restrictions might performance wouldnt drop much extra benefit would forgiving model event operator error Thats hardest thing about learning Control Line flying Any littie error model ground over have build new plane mistake Imagine learning drive crashing car time let clutch out too roughly Now before rush out ban diesel buses 158 Model Aviation CL Combat/Johnson Continued page 64 presented Weak Signals R/C Club Toledo Ohio causing such idea bump-and-run think about last thing perception Combat flown based what youve seen over years flying What happens very good pilot adopts tacticor shall say tactical flying call Europeand person becomes very successful point dominating Combat Most people whove tried tactic have succeeded destroying both models consistently gaining advantage racking up pretty poor image themselves As know next FAI Control Line World Championships will Kiev Russia later year Im sure lot us would like go getting Russia seems little diffi cult say flying England past team supporters have often treated like second-class citizens during visits foreign lands interested going Russian meet Id suggest make tentions known good folks AMA HQ encourage provide good supporter package possible wider base support FAI pro gram betterand what better way get Combat fliers attend World Champs possible see themselves Theyll selling FAI program AMA after members NRA National Rifle Association know constant pressure antigun groups Another AMA American Motorcycle Associationrecently went through battle senator Mis souri wanted ban superbikes Now may care about guns superbikes can insert words Combat airplane places lot hot air coming Out US capital would have same Combat models exciting superbikes potentially lethal gun day family sport may come under attack too NRA great help mo torcyclist fighting against some really off-thewall legislation should looking friends possible coalitions should gov ernment 60 Minutes turn sights us CL Navy Carrier/Perry Continued page 65 event Yak-9 course did see car rier action testing since Soviet Union no aircraft carriers until Seventies Yak outlines however quite similar Bell Airabonita Airacobra Yak can easily modified resemble two Bell aircraft Before someone else writes let state P-39 Airacobra also legal Carrier fly ing having tested purpose British Royal Navy P-51 Mustang also tested carrier suitability US Navy Navy operated variety Mustangs various times list cluded P-51A P-51B P-51C P-51D P-51H B C models saw actual car rier suitability testing P-51B P-51H fitted arresting gear did per form simulated takeoffs landings Ship Experimental Unit Mustin Field PA P-51D equipped arresting hook landed took off aircraft carrier Shangri-La November 1944 G-S Kits possibility G-S kits would p U U U U U U U I I U U U U U U U U U U U I I U U U U I U U U U U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep peak performance longer Satisfaction Guaranteed SIG CHAMPION 2-STROKE *FUELI FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON55 GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800U 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500I 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM4-STROKE FUEL 10% Nitromethane $415$550$1395$29500 15% Nitromethane$425 $625 $1595 $35900 CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeI money can buy also use real 100% pure Nitromethane get full measure youveI paid based honest percentage-of-volume method percentage weight SIG fuels contam 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil Ufor maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price ButI dont take word try some judge Uyourself p,ces suSiect chaoge notice See dealerfirst available order direct Call 800-247-5008 fortoll free orders Latest Catalog $300 ANUFACTURING CO Montezuma IA 50171 nes running February 1988 159 WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need tn packagel Wet Cell & Cycler-Charger$19995 Fits 48V Rx 96v Ta packsPlus $5 S&H Others available write callt~e Regular Model$3995 field kit smallPlus $2 S&H electric boat batteriesSpecify 6 12 24V Heavy Duty Model$4995 sport winch large boat andPlus $250 S&H electric power charging batteriesSpecify 6 12V CaRa ProductssAse ion edormahoc PO BOX 221 605-957-5924Deaien oquloes tootledCanton SD 57013
Edition: Model Aviation - 1988/02
Page Numbers: 63, 156, 158, 159
PROFILE SCALE activity update During past several years Profile Scale event has grown considerably popularity Most clubs have constant promoters CL Scale also including Profile Scale list con test events according newsletters re ports received Profile Scale category has also included mall trade shows around country rules governing event vary section country another concerted ef fort has made George Gaydos Gar den State Circle Burners GSCB New Jersey bring some sort stability commonality rules being used April 1984 column introduced set Profile Scale event rules created GSCBs rules written effort entice Stunt flier flying other events join Scale modeler events As result publication rules asked GSCBs copies rules score sheet happy provide Pro file event has become popular some hoped-for goals original rules did mate rialize George Gaydos primary mover devel opment 05CR Profile Scale rules writes late 1986 saw need make some im portant changes rules George says appears Stunt interest never really came up expectations originally thought felt Profile Scale event would great place Stunt flier continue Stunt interest progress same time pursue possible Scale craving least develop sort started way quickly dissipated looked like main concern event going stay Scale-minded modeler after Another factor concern possible bonus points multiengine models Several Scale modelers East Coast actively flying multiengined airplanes specif ically AMA Precision Scale event ex pressed desire bonus points Profile event Being multiengine model fan myself made good sense incorporate such bonus since know certainly longer construction period involved well need extra ingenuity installing flaps throttle other operational featuresnot mention ever-present risk engine failure risk am also referring possible incompleteness scale options almost certainly unperform ed stunt maneuvers due possible engine failure during flight Some other changes made event rules may appear changes instead better/clearer definltions rules concern ing areas weight engine requirements proof scale color markings flight op tions Another area rules has given considerable attention profile fuselage self column pictures latest Pro file Scale model Douglas B-26B Invader used during Korean War era scratchbuilt has 64-in wingspan powered two OS MAX-H 60s weighs 10 lb has following operational features throttle con trol fuel shutoff flaps bomb drop rockets photo flares parachutes PLEASE NOTE under GSCB rules definition profile follows Any solid-material fuselage nacelles ranging thickness between ilt-up former-type construction permitted though possible keep within fuselage thickness limits rule assure pro file concept have always known Control Line stays intact Therefore certain scale operations permitted take place Continued page 156 Profile Scale examples Avro Lancaster L creation Steve Curran Poughkeepsie NY powered four Cox Black Widow 049s F7F Tigercat R built Augie Buffalano Clifton NJ weighs about 3 lb uses twin Fox 19s power February 1988 63 ControL Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 George Gaydos shows us prime example Profile Scale new Douglas 5-265 vader Model big spans 64 weighs 10 lb uses two OS Max 60s power Closeup cockpit area shows detailing cockpit rivet/panel lines GSCB rules allow fuselage/na celle 1-in thick prohibit retracts bomb bay door oepration revolving turrets etc Bill discusses Profile Scale column Photos Bill Boss George Gaydos pert ecf Piifl K tern recognizes higher pressure start flight tank full much lower pres sure end fuel head pressure little nothing Since engines needle valve setting fixed will run leaner end flight tank nearly empty begin ning flight tank full Most familiar phenomenon take consideration setting needle ny bit rich start avoid overlean set ting end Now take look sketches BI through B4 illustrate uniflow principle Note vent tube extends deep container nearly fluid outlet tube case top view Stunt tank position nearly adjacent end fuel pickup tube Neatly stated uniflow principle says As long no other sources air system pressure fluid outlet will equal distance head between end uniflow tube fluid outlet notwith standing total amount fluid con tainer What means us no matter full nearly empty tank may pressure sensed engine will remain con stant engine will run consistently same speedwithout leaning-out tendency characteristic suction system sand sand get humps bumps Try Easy SanderTM See Ihe Difference Made select wood sotremely hght sander held lull sheet sand paper Flat sanded accurate sanding surface Large flat surfaces sanding area LH 50 $095 na Note once fluid level below uni flow tube system will revert straight suc tion ensure uniflow system retains its constant input engine certain uniflow tube located very close fuel pickup tube About % forward directly inboard pickup tube normal might interesting note uni flow tube located below outboard fluid outlet will no head pressure fluid flow independent fuel head pressure would cease Any flow Out tank would result engine suction As far en gine concerned end uniflow tube tank Move end tube engine thinks entire tank has moved utilize two delivery systems use help trim airplane optimum per formance exception Wingover ma neuvers requiring the engine last half patternfrom Square Eight ship little heavier ideal could employ suction system know could depend little zip end pattern other hand prefer steady en gine speed throughout flight could use enough Try Easy DrakeoM See Ihe Difference totrewely easy instali Hard find spring steel sod fiber washers Braking action rewains constant during repeated uniflow youre little short power dont want speed end flight using uniflow will allow use larger-diameter venturi engine power fear engine would able draw fuel end run tanks set up accommodate either uniflow suction capping over flow tube have normal uniflow system cap uniflow tube leave overflow open system becomes suction Let em phasize uniflow work overflow must capped both tubes left uncapped system will act pure suction system As matter policy always cap either uniflow overflow tube addition tubes bent slipstream ensure airflow doesnt create siphoning action draw out raw fuel using commercial tank short vents cut short piece fuel tub ing 450 angle install vent tube facing wind important since little bit siphoning may see ground will increase air create negative pres sure tank may cause engine go lean about muffler pressure Certainly Try out may may superior certainly no cure-all can generally expected im prove consistency engine run virtue maintaining constant pressure vent tube likely improve suction sys tem uniflow system Generally speaking high-pressure systems such bladders crankcase pressure taps useful Stunt ships appropri ate applications seeking maximum rpm using intakes too large provide adequate suction classic four-cycle Stunt run doesnt respond well such system Leave em go-fast boys Finally tanks should mounted solidly Fuel foaming should problem nose ship properly constructed vibration kept minimum tank isnt positively lo cated its Murphys law waiting happen can move will move Gotta go now Fly Stunt CL Scale/Boss Continued page 63 directly related fuselage engine nacelles Operations such landing gear retrac tion wheel well doors bomb bay doors re volving turrets permitted event Continued page 158 get shaky whenDo hate field isnt longto install hinges Try Easy HingesnM See Ihe Difference single slot few drops sf C/A gtue its done No gouging pinning hinge pins worry about Incredibly strong Virtually indestructible useLH tOt 20 ninoes 5200 eu 0 Three sizes lIt 5/32 3116LO too tot 102 SOtna~eg4 ERSY5RNDER EA5Y DRAKE EAYHINE nM OKnMP0 Box 1743 Marcos CA 92069 156 Model Aviation Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing Ph 419-797-2208 P0 Box 2480 usky Ohio 44870 #D00 THIRTY-FOURTH ANNUAL RADIO CONTROL EXPOSITION APRIL 8 9101988 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending self-addressed business size 4/ex9 envelope TICKETS 38235 Castle Romulus Ml 481 74 orders above 5 tickets must include extra postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postage Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1988 sales final non-refundable orders will returned mid-March have included adequate postage will also contain program TICKETSAREALSOA VAILABLEA T THE DOOR Will Nave Traditional Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA RulesI MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Ruleal PATTERN PLANE SPORT MONO-PLANE non-scale models onlyl SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED -muivnea rerrormance ystem TOP PERFORMANCE K&B ENGINES Airplane Manse K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER P0KV THINNER K&B SUPER FOXY PRIMER K&B SUPER P0KV PAINT K&B MIXING CUPS closing would like indicaEe East contestants have found updated rules easy live telling us t would like thank have supported GSCBs Profile Scale event date will happy answer questions send copy updated rules youre interested running event Scale meets Send inquires George Gaydos Jr 8 Dapp Court Elmwood Park NJ 07407 would also like remind Scale column YOUR column urge send pictures articles item relating CL Scale activity help Bill Boss efforts masntsin CL Scale popularity Whether seasoned Scale veteran newcomer am sure Bill will find way use material profile kit survey run Cam Martin Virginia Beach VA possibility Bob Smurthwaite J Roberts Precision Scale Air craft producing excellent profile kits Grumman FSF-2 Bearcat Douglas AD-6 Skyraider Chance Vought F4U-5 Corsair has completed am happy announce Smurthwaite will making limited production run kits Anyone interested obtaining above kits should send orders directly J Rob ert Smurthwaite PO Box 2947 La Grande OR 97850 Cost kits will bess follows Bearcat Skyraider $36 Corsair $42 $2 shipping charge per model also applies Visa Master card payment OK no CODs allow four five weeks delivery three kits excellent Profile Scale event Hint workshop Bob Furr taken Orbiting Eagles Newsletter Omaha NE This hint concerns balancing storage propellers bought wood props last fall may have carefully balanced put back plastic bag hung up hook wall work shop Bob says things may realize wood props contain moisture can migrate low end prop stored vertical position full-size aircraft wood props stored horizontally avoid blade becoming heavier due moisture migra tion secret obtaining well-balanced props balance just before useor store horizontally used some time Please send correspondenceand especially photosrelating CL Scale address shown beginning column bat meet know planning did little good seems inevitable its going hap pen lets make See fancy ourselves fighter pilots zip ping around sky never taking hit should thinking terms flying B-17s Remember Flying Fortress returned WW II mission half wing missing two engines out gaping holes over Yeh yeh get idea Well call bump-and-run Combat No fleet models neededjust patch up 01 Paint between matches fly another mis sion Equipment up little abuse Guess wont win today object would still score points cut ting streamer kill Fast Combat occasional bounce off opponents model might soften him up just enough get few extra points doesnt have dan gerous either tighter pilots circle would avoid having props cut lines safety wire engine bellcrank would keep heavy pieces hooked lines Half-A Combat already flown way brings giggles crowd contes tants other event small planes rarely damaged much during collision its big deal hit few times during match Fast Combat models really too fast powerful type flying since have lot mass slashing prop could tear up strongest structure Slow Combat ships better game 15s best cause little props least amount dam age try cut off Ron Colombos magnesium tail boom youll probably just break prop anyway Current technology aimed toward highperformance model destructs upon impact ground another model Theyre built go fast turn tight slight loss performance tremendous increase impact re sistance could made As FAI restrictions might performance wouldnt drop much extra benefit would forgiving model event operator error Thats hardest thing about learning Control Line flying Any littie error model ground over have build new plane mistake Imagine learning drive crashing car time let clutch out too roughly Now before rush out ban diesel buses 158 Model Aviation CL Combat/Johnson Continued page 64 presented Weak Signals R/C Club Toledo Ohio causing such idea bump-and-run think about last thing perception Combat flown based what youve seen over years flying What happens very good pilot adopts tacticor shall say tactical flying call Europeand person becomes very successful point dominating Combat Most people whove tried tactic have succeeded destroying both models consistently gaining advantage racking up pretty poor image themselves As know next FAI Control Line World Championships will Kiev Russia later year Im sure lot us would like go getting Russia seems little diffi cult say flying England past team supporters have often treated like second-class citizens during visits foreign lands interested going Russian meet Id suggest make tentions known good folks AMA HQ encourage provide good supporter package possible wider base support FAI pro gram betterand what better way get Combat fliers attend World Champs possible see themselves Theyll selling FAI program AMA after members NRA National Rifle Association know constant pressure antigun groups Another AMA American Motorcycle Associationrecently went through battle senator Mis souri wanted ban superbikes Now may care about guns superbikes can insert words Combat airplane places lot hot air coming Out US capital would have same Combat models exciting superbikes potentially lethal gun day family sport may come under attack too NRA great help mo torcyclist fighting against some really off-thewall legislation should looking friends possible coalitions should gov ernment 60 Minutes turn sights us CL Navy Carrier/Perry Continued page 65 event Yak-9 course did see car rier action testing since Soviet Union no aircraft carriers until Seventies Yak outlines however quite similar Bell Airabonita Airacobra Yak can easily modified resemble two Bell aircraft Before someone else writes let state P-39 Airacobra also legal Carrier fly ing having tested purpose British Royal Navy P-51 Mustang also tested carrier suitability US Navy Navy operated variety Mustangs various times list cluded P-51A P-51B P-51C P-51D P-51H B C models saw actual car rier suitability testing P-51B P-51H fitted arresting gear did per form simulated takeoffs landings Ship Experimental Unit Mustin Field PA P-51D equipped arresting hook landed took off aircraft carrier Shangri-La November 1944 G-S Kits possibility G-S kits would p U U U U U U U I I U U U U U U U U U U U I I U U U U I U U U U U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep peak performance longer Satisfaction Guaranteed SIG CHAMPION 2-STROKE *FUELI FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON55 GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800U 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500I 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM4-STROKE FUEL 10% Nitromethane $415$550$1395$29500 15% Nitromethane$425 $625 $1595 $35900 CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeI money can buy also use real 100% pure Nitromethane get full measure youveI paid based honest percentage-of-volume method percentage weight SIG fuels contam 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil Ufor maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price ButI dont take word try some judge Uyourself p,ces suSiect chaoge notice See dealerfirst available order direct Call 800-247-5008 fortoll free orders Latest Catalog $300 ANUFACTURING CO Montezuma IA 50171 nes running February 1988 159 WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need tn packagel Wet Cell & Cycler-Charger$19995 Fits 48V Rx 96v Ta packsPlus $5 S&H Others available write callt~e Regular Model$3995 field kit smallPlus $2 S&H electric boat batteriesSpecify 6 12 24V Heavy Duty Model$4995 sport winch large boat andPlus $250 S&H electric power charging batteriesSpecify 6 12V CaRa ProductssAse ion edormahoc PO BOX 221 605-957-5924Deaien oquloes tootledCanton SD 57013
Edition: Model Aviation - 1988/02
Page Numbers: 63, 156, 158, 159
PROFILE SCALE activity update During past several years Profile Scale event has grown considerably popularity Most clubs have constant promoters CL Scale also including Profile Scale list con test events according newsletters re ports received Profile Scale category has also included mall trade shows around country rules governing event vary section country another concerted ef fort has made George Gaydos Gar den State Circle Burners GSCB New Jersey bring some sort stability commonality rules being used April 1984 column introduced set Profile Scale event rules created GSCBs rules written effort entice Stunt flier flying other events join Scale modeler events As result publication rules asked GSCBs copies rules score sheet happy provide Pro file event has become popular some hoped-for goals original rules did mate rialize George Gaydos primary mover devel opment 05CR Profile Scale rules writes late 1986 saw need make some im portant changes rules George says appears Stunt interest never really came up expectations originally thought felt Profile Scale event would great place Stunt flier continue Stunt interest progress same time pursue possible Scale craving least develop sort started way quickly dissipated looked like main concern event going stay Scale-minded modeler after Another factor concern possible bonus points multiengine models Several Scale modelers East Coast actively flying multiengined airplanes specif ically AMA Precision Scale event ex pressed desire bonus points Profile event Being multiengine model fan myself made good sense incorporate such bonus since know certainly longer construction period involved well need extra ingenuity installing flaps throttle other operational featuresnot mention ever-present risk engine failure risk am also referring possible incompleteness scale options almost certainly unperform ed stunt maneuvers due possible engine failure during flight Some other changes made event rules may appear changes instead better/clearer definltions rules concern ing areas weight engine requirements proof scale color markings flight op tions Another area rules has given considerable attention profile fuselage self column pictures latest Pro file Scale model Douglas B-26B Invader used during Korean War era scratchbuilt has 64-in wingspan powered two OS MAX-H 60s weighs 10 lb has following operational features throttle con trol fuel shutoff flaps bomb drop rockets photo flares parachutes PLEASE NOTE under GSCB rules definition profile follows Any solid-material fuselage nacelles ranging thickness between ilt-up former-type construction permitted though possible keep within fuselage thickness limits rule assure pro file concept have always known Control Line stays intact Therefore certain scale operations permitted take place Continued page 156 Profile Scale examples Avro Lancaster L creation Steve Curran Poughkeepsie NY powered four Cox Black Widow 049s F7F Tigercat R built Augie Buffalano Clifton NJ weighs about 3 lb uses twin Fox 19s power February 1988 63 ControL Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 George Gaydos shows us prime example Profile Scale new Douglas 5-265 vader Model big spans 64 weighs 10 lb uses two OS Max 60s power Closeup cockpit area shows detailing cockpit rivet/panel lines GSCB rules allow fuselage/na celle 1-in thick prohibit retracts bomb bay door oepration revolving turrets etc Bill discusses Profile Scale column Photos Bill Boss George Gaydos pert ecf Piifl K tern recognizes higher pressure start flight tank full much lower pres sure end fuel head pressure little nothing Since engines needle valve setting fixed will run leaner end flight tank nearly empty begin ning flight tank full Most familiar phenomenon take consideration setting needle ny bit rich start avoid overlean set ting end Now take look sketches BI through B4 illustrate uniflow principle Note vent tube extends deep container nearly fluid outlet tube case top view Stunt tank position nearly adjacent end fuel pickup tube Neatly stated uniflow principle says As long no other sources air system pressure fluid outlet will equal distance head between end uniflow tube fluid outlet notwith standing total amount fluid con tainer What means us no matter full nearly empty tank may pressure sensed engine will remain con stant engine will run consistently same speedwithout leaning-out tendency characteristic suction system sand sand get humps bumps Try Easy SanderTM See Ihe Difference Made select wood sotremely hght sander held lull sheet sand paper Flat sanded accurate sanding surface Large flat surfaces sanding area LH 50 $095 na Note once fluid level below uni flow tube system will revert straight suc tion ensure uniflow system retains its constant input engine certain uniflow tube located very close fuel pickup tube About % forward directly inboard pickup tube normal might interesting note uni flow tube located below outboard fluid outlet will no head pressure fluid flow independent fuel head pressure would cease Any flow Out tank would result engine suction As far en gine concerned end uniflow tube tank Move end tube engine thinks entire tank has moved utilize two delivery systems use help trim airplane optimum per formance exception Wingover ma neuvers requiring the engine last half patternfrom Square Eight ship little heavier ideal could employ suction system know could depend little zip end pattern other hand prefer steady en gine speed throughout flight could use enough Try Easy DrakeoM See Ihe Difference totrewely easy instali Hard find spring steel sod fiber washers Braking action rewains constant during repeated uniflow youre little short power dont want speed end flight using uniflow will allow use larger-diameter venturi engine power fear engine would able draw fuel end run tanks set up accommodate either uniflow suction capping over flow tube have normal uniflow system cap uniflow tube leave overflow open system becomes suction Let em phasize uniflow work overflow must capped both tubes left uncapped system will act pure suction system As matter policy always cap either uniflow overflow tube addition tubes bent slipstream ensure airflow doesnt create siphoning action draw out raw fuel using commercial tank short vents cut short piece fuel tub ing 450 angle install vent tube facing wind important since little bit siphoning may see ground will increase air create negative pres sure tank may cause engine go lean about muffler pressure Certainly Try out may may superior certainly no cure-all can generally expected im prove consistency engine run virtue maintaining constant pressure vent tube likely improve suction sys tem uniflow system Generally speaking high-pressure systems such bladders crankcase pressure taps useful Stunt ships appropri ate applications seeking maximum rpm using intakes too large provide adequate suction classic four-cycle Stunt run doesnt respond well such system Leave em go-fast boys Finally tanks should mounted solidly Fuel foaming should problem nose ship properly constructed vibration kept minimum tank isnt positively lo cated its Murphys law waiting happen can move will move Gotta go now Fly Stunt CL Scale/Boss Continued page 63 directly related fuselage engine nacelles Operations such landing gear retrac tion wheel well doors bomb bay doors re volving turrets permitted event Continued page 158 get shaky whenDo hate field isnt longto install hinges Try Easy HingesnM See Ihe Difference single slot few drops sf C/A gtue its done No gouging pinning hinge pins worry about Incredibly strong Virtually indestructible useLH tOt 20 ninoes 5200 eu 0 Three sizes lIt 5/32 3116LO too tot 102 SOtna~eg4 ERSY5RNDER EA5Y DRAKE EAYHINE nM OKnMP0 Box 1743 Marcos CA 92069 156 Model Aviation Show Colors BECAUSE WERE PROUD OF THEM take lot pride building model So guess color paint youre choosing finish take time put paint chip can Perfect Paint color youre buying color want . take guesswork out finishing Ph 419-797-2208 P0 Box 2480 usky Ohio 44870 #D00 THIRTY-FOURTH ANNUAL RADIO CONTROL EXPOSITION APRIL 8 9101988 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending self-addressed business size 4/ex9 envelope TICKETS 38235 Castle Romulus Ml 481 74 orders above 5 tickets must include extra postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postage Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1988 sales final non-refundable orders will returned mid-March have included adequate postage will also contain program TICKETSAREALSOA VAILABLEA T THE DOOR Will Nave Traditional Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA RulesI MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Ruleal PATTERN PLANE SPORT MONO-PLANE non-scale models onlyl SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED -muivnea rerrormance ystem TOP PERFORMANCE K&B ENGINES Airplane Manse K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER P0KV THINNER K&B SUPER FOXY PRIMER K&B SUPER P0KV PAINT K&B MIXING CUPS closing would like indicaEe East contestants have found updated rules easy live telling us t would like thank have supported GSCBs Profile Scale event date will happy answer questions send copy updated rules youre interested running event Scale meets Send inquires George Gaydos Jr 8 Dapp Court Elmwood Park NJ 07407 would also like remind Scale column YOUR column urge send pictures articles item relating CL Scale activity help Bill Boss efforts masntsin CL Scale popularity Whether seasoned Scale veteran newcomer am sure Bill will find way use material profile kit survey run Cam Martin Virginia Beach VA possibility Bob Smurthwaite J Roberts Precision Scale Air craft producing excellent profile kits Grumman FSF-2 Bearcat Douglas AD-6 Skyraider Chance Vought F4U-5 Corsair has completed am happy announce Smurthwaite will making limited production run kits Anyone interested obtaining above kits should send orders directly J Rob ert Smurthwaite PO Box 2947 La Grande OR 97850 Cost kits will bess follows Bearcat Skyraider $36 Corsair $42 $2 shipping charge per model also applies Visa Master card payment OK no CODs allow four five weeks delivery three kits excellent Profile Scale event Hint workshop Bob Furr taken Orbiting Eagles Newsletter Omaha NE This hint concerns balancing storage propellers bought wood props last fall may have carefully balanced put back plastic bag hung up hook wall work shop Bob says things may realize wood props contain moisture can migrate low end prop stored vertical position full-size aircraft wood props stored horizontally avoid blade becoming heavier due moisture migra tion secret obtaining well-balanced props balance just before useor store horizontally used some time Please send correspondenceand especially photosrelating CL Scale address shown beginning column bat meet know planning did little good seems inevitable its going hap pen lets make See fancy ourselves fighter pilots zip ping around sky never taking hit should thinking terms flying B-17s Remember Flying Fortress returned WW II mission half wing missing two engines out gaping holes over Yeh yeh get idea Well call bump-and-run Combat No fleet models neededjust patch up 01 Paint between matches fly another mis sion Equipment up little abuse Guess wont win today object would still score points cut ting streamer kill Fast Combat occasional bounce off opponents model might soften him up just enough get few extra points doesnt have dan gerous either tighter pilots circle would avoid having props cut lines safety wire engine bellcrank would keep heavy pieces hooked lines Half-A Combat already flown way brings giggles crowd contes tants other event small planes rarely damaged much during collision its big deal hit few times during match Fast Combat models really too fast powerful type flying since have lot mass slashing prop could tear up strongest structure Slow Combat ships better game 15s best cause little props least amount dam age try cut off Ron Colombos magnesium tail boom youll probably just break prop anyway Current technology aimed toward highperformance model destructs upon impact ground another model Theyre built go fast turn tight slight loss performance tremendous increase impact re sistance could made As FAI restrictions might performance wouldnt drop much extra benefit would forgiving model event operator error Thats hardest thing about learning Control Line flying Any littie error model ground over have build new plane mistake Imagine learning drive crashing car time let clutch out too roughly Now before rush out ban diesel buses 158 Model Aviation CL Combat/Johnson Continued page 64 presented Weak Signals R/C Club Toledo Ohio causing such idea bump-and-run think about last thing perception Combat flown based what youve seen over years flying What happens very good pilot adopts tacticor shall say tactical flying call Europeand person becomes very successful point dominating Combat Most people whove tried tactic have succeeded destroying both models consistently gaining advantage racking up pretty poor image themselves As know next FAI Control Line World Championships will Kiev Russia later year Im sure lot us would like go getting Russia seems little diffi cult say flying England past team supporters have often treated like second-class citizens during visits foreign lands interested going Russian meet Id suggest make tentions known good folks AMA HQ encourage provide good supporter package possible wider base support FAI pro gram betterand what better way get Combat fliers attend World Champs possible see themselves Theyll selling FAI program AMA after members NRA National Rifle Association know constant pressure antigun groups Another AMA American Motorcycle Associationrecently went through battle senator Mis souri wanted ban superbikes Now may care about guns superbikes can insert words Combat airplane places lot hot air coming Out US capital would have same Combat models exciting superbikes potentially lethal gun day family sport may come under attack too NRA great help mo torcyclist fighting against some really off-thewall legislation should looking friends possible coalitions should gov ernment 60 Minutes turn sights us CL Navy Carrier/Perry Continued page 65 event Yak-9 course did see car rier action testing since Soviet Union no aircraft carriers until Seventies Yak outlines however quite similar Bell Airabonita Airacobra Yak can easily modified resemble two Bell aircraft Before someone else writes let state P-39 Airacobra also legal Carrier fly ing having tested purpose British Royal Navy P-51 Mustang also tested carrier suitability US Navy Navy operated variety Mustangs various times list cluded P-51A P-51B P-51C P-51D P-51H B C models saw actual car rier suitability testing P-51B P-51H fitted arresting gear did per form simulated takeoffs landings Ship Experimental Unit Mustin Field PA P-51D equipped arresting hook landed took off aircraft carrier Shangri-La November 1944 G-S Kits possibility G-S kits would p U U U U U U U I I U U U U U U U U U U U I I U U U U I U U U U U U SIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors- Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep peak performance longer Satisfaction Guaranteed SIG CHAMPION 2-STROKE *FUELI FREIGHT FREE SHIPPING ON ORDERS OVER $1500COLLECT PINTQUARTGALLON55 GAL DRUM 0%Nitromethane$315$450$1050$19000 5%Nitromethane$365$525$1250$25800U 10%Nitromethane$415$550$1450$32500 15%Nitromethane$430$625$1650$38500I 25%Nitromethane$495$750$2095$52000 35%Nitromethane$575$875$2495$66000 SIGPREMIUM4-STROKE FUEL 10% Nitromethane $415$550$1395$29500 15% Nitromethane$425 $625 $1595 $35900 CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best gradeI money can buy also use real 100% pure Nitromethane get full measure youveI paid based honest percentage-of-volume method percentage weight SIG fuels contam 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil Ufor maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price ButI dont take word try some judge Uyourself p,ces suSiect chaoge notice See dealerfirst available order direct Call 800-247-5008 fortoll free orders Latest Catalog $300 ANUFACTURING CO Montezuma IA 50171 nes running February 1988 159 WHEN YOU FORGET\OUR UNITS REMEMBER RC System NICd Batteries chargers need tn packagel Wet Cell & Cycler-Charger$19995 Fits 48V Rx 96v Ta packsPlus $5 S&H Others available write callt~e Regular Model$3995 field kit smallPlus $2 S&H electric boat batteriesSpecify 6 12 24V Heavy Duty Model$4995 sport winch large boat andPlus $250 S&H electric power charging batteriesSpecify 6 12V CaRa ProductssAse ion edormahoc PO BOX 221 605-957-5924Deaien oquloes tootledCanton SD 57013