Radio Control Pylon Racing Bill Hager FAI may back think 1985 will tell tale USA sending team FAI RC Pylon World Cham pionships Canada As promised month going finish article Paul Bowman basics FAI first report sent Z Malina about International Grand Prix Modela 1984 held Czecho slovakia First would like thank having article about races last year printed useless some modelers did write Unfortunately competitors USA again did take part greatest contests F3DFAI category Europe Pete Reed wrote have well-prepared may come next year would like use opportunity mention year 1986 will Open Champi onship Europe held Czechoslovakia years race took place again Melnik airport June 15-17 1984 Two categories RCPClub 20 F3DFAI flown original number applicants 80 reduced 59 Traditionally contest spectators whole country well abroad course two days about 4000 spectators took part RCP-Club 20 category British contestants proved very competitive main speaker protagonist contest winner P Smoothy time 76 sec Second place earned couple Czechoslo vakia Paris/P Matocha third place another British team M Griggs R Buck time 756 sec absolute record history contest British competitors have used OPS Irvine engines Czechoslo yak competitors used MVVS 35cc engines F3DFAI category winners Malina Brothers time 816 sec Just week ago won Italy Sopwith Trophy Trofeo OPS contests time 830 sec second couple Opela/Hacker fighting first until last mo ment also excellent time 816 sec third team quickest cuts flights far ideal used new MVVS 65cc GRRT engines Foreign competitors using Italian engines OPS Picco Most competitors use models American Formula event contrast Americans build models own use purchased kits winners used model Shark others Miss RJMustang props generally laminate competitors Europe asking question will Europeans Americans come Europe Will win easily Will Europeans equal rivals achievements reached Ameri can Formula 68 sec dreadful unimaginable Europeans Ameri cans must first excellent pilots Enclosed will find list results Grand Prix Modela Czecho slovakia Sopwith Trophy Italy Sopwith Trophy Results 1 MalinaMalina 2 Casutt V 3 Razzi R 4 Pick M 5 Stuckeriurgen B Grand Prix ResultsClub 20 1 P SmoothyS King 2 I ParisP Matocha 3 M GriggsR Buck 4 K HackerP Opela 5 M MalinaMS Z Malina Grand Prix ResultsFAI 1 M MalinaMS Z Malina 2 K HackerP Opela 3 J KunesZ Nadrchal 4 Z TeplyZ Teply 5 J PadelaJ Katzer Continued Page 140 March 1985 53 back Gran Prix Modela Internationai yion ace contest Czecho siovakia 1984 left ParislMatocha team look lucky contestant number race Model powered MVVS 65 GRRT engine right team refuels its Red Baron FAI Pylon Racer before heat winners FAI Pylon event callers LR 1stMaims brothers Shark model 2ndOpela/Hacker Miss RJ 3rdNadrohallKunes Mustang great race contestants have wondering some US filers will come IAS0 S~GREAT LAKES 4gj RC HELICOPTERS 321 Koiwinac Street ha WI 54952 722-5025 DIGITAL HELI-TACH now possible set rotor rpm factory specs safety problems currently associated task new tachometer attaches directly helicopter rotor rpm indicated easyto-read liquid crystal display hover Lightweight durable 3A oz comes ready use batteries instructions LIST PRICE6895 INTRODUCTORY PRICE .. 5895 info product send SASE HA VING PROBLEMS GREAT LAKES FUSELAGE KITS 1 HUGHES 500 KALT 20/MINI-BOY Fiberglass13895 2 JET RANGER KALT 30/MINI-BOY Fiberglass13895 3 JET RANGER GMP CRICKET Plastic 5895 4 HUGHES 500 GMP CRICKET PlasticS 6895 Tp COWEYITO MO 0661H COIWRtWOE PRO w/auto3643 0561H CODRA OS FSRH CRICKET1WII OS28FSRH 419 5143 umrnaz CElL OS6IFSRH OM 3U401 SUPER iWNI-DOT autorotation OS45FSRH SW95 CALL FOR HELP! PRICES GOOD THROUGH MARCH 31 1985 s~tvicm OFFERED custom Building Set Up Flight Inatniction Club Oroup Demonstrations Send $200 catalog INFO $0425 add $350 $264100 add $450 $101 over add $600 UPS COD Blue Label extra Personal Checks will held 30 days VISA Mastercard Minii wisconsin residents add 5% sales tax tail configuration consisted sweptback vertical fin extended below fuselage upper section fin housed anti-torque rotor five-blad ed rotor being fitted left side horizontal stabilizer could set vertical position hovering flight also provided main landing gear retracted fuselage fixed tail wheel vertical fin Stub wings easily detached fitted help off-load rotor during high-speed flight gunship role Blackhawk used wings carry missiles rockets four stations plus wing-end stations Sidewinder airtoair missiles Two 1500 hp General Electric turboshaft engines fitted above low-profile fuselage powered five-bladed main ro tor well anti-torque rotor aircrafts dynamic components modi fied S-61 R helicopter Wingspan 27 feet 4 inches Typical armament loads 16 TOW antitank missiles eight 19-round 275inch rocket pods plus Sidewinders An under-fuselage turret essentially 3600 field fire could fitted 20mm 30mm cannon multi-barrel 20mm cannon 40mm grenade launch er Without external ordnance troops up four tons cargo could carried sling Blackhawk civil N67 1 SA flight tested 1970 1974 its original configuration helicopter reached record speed 216844 mph three-kilometer course December 1970 laterthat month reached 220885 mph 15/25-kilometer course Sikorsky received Army funding modify tail configuration ducted-fan system Flight testing mode began 1974 speeds 230 mph achieved dive aircraft reconfigured its original tail later year crashed September 1974 addition its payload versatility Blackhawk demonstrat ed very high degree maneuverability remember first time saw some film footage incredible machine flight S-67 did normal helicopter moves also looped rolled flew faster 200 mph sole S-67 crashed 1974 Farnborough air show England during low-level roll machine completely destroyed remember seeing S-67 tail-rotor blades Dave Niemans shop 1976 apparently having re trieved half-mile crash Pete Ashford US government decided against S-67 possible US military weapon its interesting note care fully Soviets looked According Czech aviation magazine article written 1974 entitled Another Ml Soviets carefully scrutinized American S-67 impressed new helicopter Mi-24 Hind designed basis technical specifications similar Sikorsky 5-67 Blackhawk attack helicopter am now working plug Blackhawk fuselage hope flying springtime BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 53 Hey US filers much invitation want now remainder report Paul Bowman Needle valve assembly standard OPS needle valve assembly lock nut type design has proven very reliable Vibration caused engine loosens locking nut allowing needle vibrate away its origi nal setting eliminate problem OPS assembly best replaced OS spring-type assembly may glued place using epoxy resin may also used plug redundant hole venturi side OS spring-type assem bly has positive click-by-click action allowing precise mixture adjustment made Fuel pressurization various methods fuel pressurization available 140 Model Aviation Complete Parts & Service both GMP SCHLUTER Heilcopten HELICOPTER HOTLINE 414 722-5025 ave found pipe pressure eliable far easiest operate ipe pressure may obtained tapping ie tuned pipe close its point largest iaineter connecting fitting nel tank vent suitable tap-fitting may e effected using short length brass ibing glued position using 24-hour raldite epoxy resin brass tube hould protrude mm ne expansion chamber mixture setting nportant single adjustment made owerplant doubt correct etting always run rich first adjusting rogressively towards optimum ach flight will noticed using ipe pressure considerable icrease fuel requirement after take ff mixture setting must therefore e assessed during flight adjusted ccordingly once airborne mixire setting becomes too lean flight iust terminated immediately avoid amage engine Fuel tank general have used ight-ounce Kavan clunk tank have und eight ounces fuel required mplete race clunk-type pickup required maintain uninterrupted fuel ed throughout prevent fuel agita foaming tank must insu ted foam rubber does uch fuselage skin bulkheads ink should positioned high iselage possible will avoid fuel raining away venturi during ght turns due increased gravita onal loading routing fuel feed ne outside top fuselage may sily broken refuelling single ent required connect tank med pipe pressure up Air intake Although relatively small 4inder capacity engines require rge volumes air operating iaximum rpm passage air ngine venturi must therefore unre ricted may accomplished lacing single opening minimum ontal area 25 square centimeters ie vacant cheek cowl Cooling FAI rules require igine enclosed exception F silencer cylinder head operat g controls Remaining within rules ifficient cooling will gained expos g airflow finned section te cylinder head An improved cooling ittern may obtained addition ducts vents placed cowling ith regard following During eration engine temperature adient exists across cylinder between ne hot exhaust port area relativecool boost port area resulting non niform expansion distorts cylinder Lusing subsequent loss power Direct oling front cylinder must erefore avoided Instead ducts id vents should positioned aximize cooling rear cylin r particular exhaust-port March 1985 141 aerosol can has done away much pinning taping praying parts permanently joined youll find less time gluing time flying SUPER JET 1/4 oz No 383 $199 1/2 oz No 384 $299 1 oz No 382 $499 2 oz No 388 $999 X-CEL 3 oz No 389 $399 REGULAR JET 1/4 oz No 385 $199 1/2 oz No 386 $299 1 oz No 381 $499 2 oz No 387 $999 4735 West Chicago Avenue 0 Chicago Illinois 60651 area Spinner rules require scalelike round-nose spinner used models pointless very carefully balance propeller use con junction unbalanced spinner Equal care must taken balancing propeller spinner alike Both may balanced accurately using special device such Hi-Point Products USA Balancer Bearing life may greatly reduced due adverse gyroscopic forces generated spinner therefore advisable remove spinner fit round-nose nut during engine testing practice sessions Fox spun-aluminum spinners have proved relia ble Unfortunately readily available country England RMcM CD cast aluminum spinners alternative require modifi cation increasing retaining bolt size 2BA Maintenance carefully-maintained engine essential consistent reli able performance great knowledge required sensible techniques must employed competitive life new engine will depend skill operator Certain parts will need replace ment time time excessive wear normally result incorrect operation regular stripping clean ing will preserve life engine Always use correct tools possible employ use small torque wrench reduces assembly time eliminates distortion due unequally-tensioned bolts have found torque 10 oz-inches round sufficient Flying Having produced reliable competitive model success dependent flying ability No matter proficient pilot may other fields Pylon Racing will present new challenge should stressed useful practice may gained under race conditions therefore necessary novice expert alike race opportunity have month Thanks Paul Bowman timely advice See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 Engines/Kilsdonk Continued page 58 Compression Technically reduction volume given amount gas such air increases pressure resulting reaction force opposite direction Compression generally referred model engines usually subjective feel force required turn propeller over dry engine Compression direct function piston-to-cylinder fit attendant wear Generally speaking engines compression will perform better some exceptions particularly ringed engines new ringed engine usually needs some running wear ring maximum compression Similar ly well-fitted ABC engine will give false feeling compression due cylinder taper characteristic bump near TDC Compression should confused compression ratio compression ratio should concern average modeler rather best left engine designers manufacturers Just record though compression ratio total cylinder volume piston BDC including volume com bustion chamber displaced pis ton divided volume displaced piston remaining volume piston TDC Compression ratio factor four-cycle engines theoretical value two-cycle engines since intake exhaust ports wide open BDC in-depth article engine authored Glenn Lee published Model Aviation 1979 Pressurization fuel system par ticular need often misunder stood should consider some form pressurization engine 142 Model Aviation iAiILiLIi J j 41 iii 14 3 Clii Using Super Jet Regular Jet X-CEL new Great unexpected field repairs Whether add fillet fill gap always keep combination best service see dealer items want available write direct add $100 per item $200 outside US Minissum order $2 tap CARL GOLDBERG MODELS INC G-285
Edition: Model Aviation - 1985/03
Page Numbers: 53, 140, 141, 142
Edition: Model Aviation - 1985/03
Page Numbers: 53, 140, 141, 142
Radio Control Pylon Racing Bill Hager FAI may back think 1985 will tell tale USA sending team FAI RC Pylon World Cham pionships Canada As promised month going finish article Paul Bowman basics FAI first report sent Z Malina about International Grand Prix Modela 1984 held Czecho slovakia First would like thank having article about races last year printed useless some modelers did write Unfortunately competitors USA again did take part greatest contests F3DFAI category Europe Pete Reed wrote have well-prepared may come next year would like use opportunity mention year 1986 will Open Champi onship Europe held Czechoslovakia years race took place again Melnik airport June 15-17 1984 Two categories RCPClub 20 F3DFAI flown original number applicants 80 reduced 59 Traditionally contest spectators whole country well abroad course two days about 4000 spectators took part RCP-Club 20 category British contestants proved very competitive main speaker protagonist contest winner P Smoothy time 76 sec Second place earned couple Czechoslo vakia Paris/P Matocha third place another British team M Griggs R Buck time 756 sec absolute record history contest British competitors have used OPS Irvine engines Czechoslo yak competitors used MVVS 35cc engines F3DFAI category winners Malina Brothers time 816 sec Just week ago won Italy Sopwith Trophy Trofeo OPS contests time 830 sec second couple Opela/Hacker fighting first until last mo ment also excellent time 816 sec third team quickest cuts flights far ideal used new MVVS 65cc GRRT engines Foreign competitors using Italian engines OPS Picco Most competitors use models American Formula event contrast Americans build models own use purchased kits winners used model Shark others Miss RJMustang props generally laminate competitors Europe asking question will Europeans Americans come Europe Will win easily Will Europeans equal rivals achievements reached Ameri can Formula 68 sec dreadful unimaginable Europeans Ameri cans must first excellent pilots Enclosed will find list results Grand Prix Modela Czecho slovakia Sopwith Trophy Italy Sopwith Trophy Results 1 MalinaMalina 2 Casutt V 3 Razzi R 4 Pick M 5 Stuckeriurgen B Grand Prix ResultsClub 20 1 P SmoothyS King 2 I ParisP Matocha 3 M GriggsR Buck 4 K HackerP Opela 5 M MalinaMS Z Malina Grand Prix ResultsFAI 1 M MalinaMS Z Malina 2 K HackerP Opela 3 J KunesZ Nadrchal 4 Z TeplyZ Teply 5 J PadelaJ Katzer Continued Page 140 March 1985 53 back Gran Prix Modela Internationai yion ace contest Czecho siovakia 1984 left ParislMatocha team look lucky contestant number race Model powered MVVS 65 GRRT engine right team refuels its Red Baron FAI Pylon Racer before heat winners FAI Pylon event callers LR 1stMaims brothers Shark model 2ndOpela/Hacker Miss RJ 3rdNadrohallKunes Mustang great race contestants have wondering some US filers will come IAS0 S~GREAT LAKES 4gj RC HELICOPTERS 321 Koiwinac Street ha WI 54952 722-5025 DIGITAL HELI-TACH now possible set rotor rpm factory specs safety problems currently associated task new tachometer attaches directly helicopter rotor rpm indicated easyto-read liquid crystal display hover Lightweight durable 3A oz comes ready use batteries instructions LIST PRICE6895 INTRODUCTORY PRICE .. 5895 info product send SASE HA VING PROBLEMS GREAT LAKES FUSELAGE KITS 1 HUGHES 500 KALT 20/MINI-BOY Fiberglass13895 2 JET RANGER KALT 30/MINI-BOY Fiberglass13895 3 JET RANGER GMP CRICKET Plastic 5895 4 HUGHES 500 GMP CRICKET PlasticS 6895 Tp COWEYITO MO 0661H COIWRtWOE PRO w/auto3643 0561H CODRA OS FSRH CRICKET1WII OS28FSRH 419 5143 umrnaz CElL OS6IFSRH OM 3U401 SUPER iWNI-DOT autorotation OS45FSRH SW95 CALL FOR HELP! PRICES GOOD THROUGH MARCH 31 1985 s~tvicm OFFERED custom Building Set Up Flight Inatniction Club Oroup Demonstrations Send $200 catalog INFO $0425 add $350 $264100 add $450 $101 over add $600 UPS COD Blue Label extra Personal Checks will held 30 days VISA Mastercard Minii wisconsin residents add 5% sales tax tail configuration consisted sweptback vertical fin extended below fuselage upper section fin housed anti-torque rotor five-blad ed rotor being fitted left side horizontal stabilizer could set vertical position hovering flight also provided main landing gear retracted fuselage fixed tail wheel vertical fin Stub wings easily detached fitted help off-load rotor during high-speed flight gunship role Blackhawk used wings carry missiles rockets four stations plus wing-end stations Sidewinder airtoair missiles Two 1500 hp General Electric turboshaft engines fitted above low-profile fuselage powered five-bladed main ro tor well anti-torque rotor aircrafts dynamic components modi fied S-61 R helicopter Wingspan 27 feet 4 inches Typical armament loads 16 TOW antitank missiles eight 19-round 275inch rocket pods plus Sidewinders An under-fuselage turret essentially 3600 field fire could fitted 20mm 30mm cannon multi-barrel 20mm cannon 40mm grenade launch er Without external ordnance troops up four tons cargo could carried sling Blackhawk civil N67 1 SA flight tested 1970 1974 its original configuration helicopter reached record speed 216844 mph three-kilometer course December 1970 laterthat month reached 220885 mph 15/25-kilometer course Sikorsky received Army funding modify tail configuration ducted-fan system Flight testing mode began 1974 speeds 230 mph achieved dive aircraft reconfigured its original tail later year crashed September 1974 addition its payload versatility Blackhawk demonstrat ed very high degree maneuverability remember first time saw some film footage incredible machine flight S-67 did normal helicopter moves also looped rolled flew faster 200 mph sole S-67 crashed 1974 Farnborough air show England during low-level roll machine completely destroyed remember seeing S-67 tail-rotor blades Dave Niemans shop 1976 apparently having re trieved half-mile crash Pete Ashford US government decided against S-67 possible US military weapon its interesting note care fully Soviets looked According Czech aviation magazine article written 1974 entitled Another Ml Soviets carefully scrutinized American S-67 impressed new helicopter Mi-24 Hind designed basis technical specifications similar Sikorsky 5-67 Blackhawk attack helicopter am now working plug Blackhawk fuselage hope flying springtime BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 53 Hey US filers much invitation want now remainder report Paul Bowman Needle valve assembly standard OPS needle valve assembly lock nut type design has proven very reliable Vibration caused engine loosens locking nut allowing needle vibrate away its origi nal setting eliminate problem OPS assembly best replaced OS spring-type assembly may glued place using epoxy resin may also used plug redundant hole venturi side OS spring-type assem bly has positive click-by-click action allowing precise mixture adjustment made Fuel pressurization various methods fuel pressurization available 140 Model Aviation Complete Parts & Service both GMP SCHLUTER Heilcopten HELICOPTER HOTLINE 414 722-5025 ave found pipe pressure eliable far easiest operate ipe pressure may obtained tapping ie tuned pipe close its point largest iaineter connecting fitting nel tank vent suitable tap-fitting may e effected using short length brass ibing glued position using 24-hour raldite epoxy resin brass tube hould protrude mm ne expansion chamber mixture setting nportant single adjustment made owerplant doubt correct etting always run rich first adjusting rogressively towards optimum ach flight will noticed using ipe pressure considerable icrease fuel requirement after take ff mixture setting must therefore e assessed during flight adjusted ccordingly once airborne mixire setting becomes too lean flight iust terminated immediately avoid amage engine Fuel tank general have used ight-ounce Kavan clunk tank have und eight ounces fuel required mplete race clunk-type pickup required maintain uninterrupted fuel ed throughout prevent fuel agita foaming tank must insu ted foam rubber does uch fuselage skin bulkheads ink should positioned high iselage possible will avoid fuel raining away venturi during ght turns due increased gravita onal loading routing fuel feed ne outside top fuselage may sily broken refuelling single ent required connect tank med pipe pressure up Air intake Although relatively small 4inder capacity engines require rge volumes air operating iaximum rpm passage air ngine venturi must therefore unre ricted may accomplished lacing single opening minimum ontal area 25 square centimeters ie vacant cheek cowl Cooling FAI rules require igine enclosed exception F silencer cylinder head operat g controls Remaining within rules ifficient cooling will gained expos g airflow finned section te cylinder head An improved cooling ittern may obtained addition ducts vents placed cowling ith regard following During eration engine temperature adient exists across cylinder between ne hot exhaust port area relativecool boost port area resulting non niform expansion distorts cylinder Lusing subsequent loss power Direct oling front cylinder must erefore avoided Instead ducts id vents should positioned aximize cooling rear cylin r particular exhaust-port March 1985 141 aerosol can has done away much pinning taping praying parts permanently joined youll find less time gluing time flying SUPER JET 1/4 oz No 383 $199 1/2 oz No 384 $299 1 oz No 382 $499 2 oz No 388 $999 X-CEL 3 oz No 389 $399 REGULAR JET 1/4 oz No 385 $199 1/2 oz No 386 $299 1 oz No 381 $499 2 oz No 387 $999 4735 West Chicago Avenue 0 Chicago Illinois 60651 area Spinner rules require scalelike round-nose spinner used models pointless very carefully balance propeller use con junction unbalanced spinner Equal care must taken balancing propeller spinner alike Both may balanced accurately using special device such Hi-Point Products USA Balancer Bearing life may greatly reduced due adverse gyroscopic forces generated spinner therefore advisable remove spinner fit round-nose nut during engine testing practice sessions Fox spun-aluminum spinners have proved relia ble Unfortunately readily available country England RMcM CD cast aluminum spinners alternative require modifi cation increasing retaining bolt size 2BA Maintenance carefully-maintained engine essential consistent reli able performance great knowledge required sensible techniques must employed competitive life new engine will depend skill operator Certain parts will need replace ment time time excessive wear normally result incorrect operation regular stripping clean ing will preserve life engine Always use correct tools possible employ use small torque wrench reduces assembly time eliminates distortion due unequally-tensioned bolts have found torque 10 oz-inches round sufficient Flying Having produced reliable competitive model success dependent flying ability No matter proficient pilot may other fields Pylon Racing will present new challenge should stressed useful practice may gained under race conditions therefore necessary novice expert alike race opportunity have month Thanks Paul Bowman timely advice See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 Engines/Kilsdonk Continued page 58 Compression Technically reduction volume given amount gas such air increases pressure resulting reaction force opposite direction Compression generally referred model engines usually subjective feel force required turn propeller over dry engine Compression direct function piston-to-cylinder fit attendant wear Generally speaking engines compression will perform better some exceptions particularly ringed engines new ringed engine usually needs some running wear ring maximum compression Similar ly well-fitted ABC engine will give false feeling compression due cylinder taper characteristic bump near TDC Compression should confused compression ratio compression ratio should concern average modeler rather best left engine designers manufacturers Just record though compression ratio total cylinder volume piston BDC including volume com bustion chamber displaced pis ton divided volume displaced piston remaining volume piston TDC Compression ratio factor four-cycle engines theoretical value two-cycle engines since intake exhaust ports wide open BDC in-depth article engine authored Glenn Lee published Model Aviation 1979 Pressurization fuel system par ticular need often misunder stood should consider some form pressurization engine 142 Model Aviation iAiILiLIi J j 41 iii 14 3 Clii Using Super Jet Regular Jet X-CEL new Great unexpected field repairs Whether add fillet fill gap always keep combination best service see dealer items want available write direct add $100 per item $200 outside US Minissum order $2 tap CARL GOLDBERG MODELS INC G-285
Edition: Model Aviation - 1985/03
Page Numbers: 53, 140, 141, 142
Radio Control Pylon Racing Bill Hager FAI may back think 1985 will tell tale USA sending team FAI RC Pylon World Cham pionships Canada As promised month going finish article Paul Bowman basics FAI first report sent Z Malina about International Grand Prix Modela 1984 held Czecho slovakia First would like thank having article about races last year printed useless some modelers did write Unfortunately competitors USA again did take part greatest contests F3DFAI category Europe Pete Reed wrote have well-prepared may come next year would like use opportunity mention year 1986 will Open Champi onship Europe held Czechoslovakia years race took place again Melnik airport June 15-17 1984 Two categories RCPClub 20 F3DFAI flown original number applicants 80 reduced 59 Traditionally contest spectators whole country well abroad course two days about 4000 spectators took part RCP-Club 20 category British contestants proved very competitive main speaker protagonist contest winner P Smoothy time 76 sec Second place earned couple Czechoslo vakia Paris/P Matocha third place another British team M Griggs R Buck time 756 sec absolute record history contest British competitors have used OPS Irvine engines Czechoslo yak competitors used MVVS 35cc engines F3DFAI category winners Malina Brothers time 816 sec Just week ago won Italy Sopwith Trophy Trofeo OPS contests time 830 sec second couple Opela/Hacker fighting first until last mo ment also excellent time 816 sec third team quickest cuts flights far ideal used new MVVS 65cc GRRT engines Foreign competitors using Italian engines OPS Picco Most competitors use models American Formula event contrast Americans build models own use purchased kits winners used model Shark others Miss RJMustang props generally laminate competitors Europe asking question will Europeans Americans come Europe Will win easily Will Europeans equal rivals achievements reached Ameri can Formula 68 sec dreadful unimaginable Europeans Ameri cans must first excellent pilots Enclosed will find list results Grand Prix Modela Czecho slovakia Sopwith Trophy Italy Sopwith Trophy Results 1 MalinaMalina 2 Casutt V 3 Razzi R 4 Pick M 5 Stuckeriurgen B Grand Prix ResultsClub 20 1 P SmoothyS King 2 I ParisP Matocha 3 M GriggsR Buck 4 K HackerP Opela 5 M MalinaMS Z Malina Grand Prix ResultsFAI 1 M MalinaMS Z Malina 2 K HackerP Opela 3 J KunesZ Nadrchal 4 Z TeplyZ Teply 5 J PadelaJ Katzer Continued Page 140 March 1985 53 back Gran Prix Modela Internationai yion ace contest Czecho siovakia 1984 left ParislMatocha team look lucky contestant number race Model powered MVVS 65 GRRT engine right team refuels its Red Baron FAI Pylon Racer before heat winners FAI Pylon event callers LR 1stMaims brothers Shark model 2ndOpela/Hacker Miss RJ 3rdNadrohallKunes Mustang great race contestants have wondering some US filers will come IAS0 S~GREAT LAKES 4gj RC HELICOPTERS 321 Koiwinac Street ha WI 54952 722-5025 DIGITAL HELI-TACH now possible set rotor rpm factory specs safety problems currently associated task new tachometer attaches directly helicopter rotor rpm indicated easyto-read liquid crystal display hover Lightweight durable 3A oz comes ready use batteries instructions LIST PRICE6895 INTRODUCTORY PRICE .. 5895 info product send SASE HA VING PROBLEMS GREAT LAKES FUSELAGE KITS 1 HUGHES 500 KALT 20/MINI-BOY Fiberglass13895 2 JET RANGER KALT 30/MINI-BOY Fiberglass13895 3 JET RANGER GMP CRICKET Plastic 5895 4 HUGHES 500 GMP CRICKET PlasticS 6895 Tp COWEYITO MO 0661H COIWRtWOE PRO w/auto3643 0561H CODRA OS FSRH CRICKET1WII OS28FSRH 419 5143 umrnaz CElL OS6IFSRH OM 3U401 SUPER iWNI-DOT autorotation OS45FSRH SW95 CALL FOR HELP! PRICES GOOD THROUGH MARCH 31 1985 s~tvicm OFFERED custom Building Set Up Flight Inatniction Club Oroup Demonstrations Send $200 catalog INFO $0425 add $350 $264100 add $450 $101 over add $600 UPS COD Blue Label extra Personal Checks will held 30 days VISA Mastercard Minii wisconsin residents add 5% sales tax tail configuration consisted sweptback vertical fin extended below fuselage upper section fin housed anti-torque rotor five-blad ed rotor being fitted left side horizontal stabilizer could set vertical position hovering flight also provided main landing gear retracted fuselage fixed tail wheel vertical fin Stub wings easily detached fitted help off-load rotor during high-speed flight gunship role Blackhawk used wings carry missiles rockets four stations plus wing-end stations Sidewinder airtoair missiles Two 1500 hp General Electric turboshaft engines fitted above low-profile fuselage powered five-bladed main ro tor well anti-torque rotor aircrafts dynamic components modi fied S-61 R helicopter Wingspan 27 feet 4 inches Typical armament loads 16 TOW antitank missiles eight 19-round 275inch rocket pods plus Sidewinders An under-fuselage turret essentially 3600 field fire could fitted 20mm 30mm cannon multi-barrel 20mm cannon 40mm grenade launch er Without external ordnance troops up four tons cargo could carried sling Blackhawk civil N67 1 SA flight tested 1970 1974 its original configuration helicopter reached record speed 216844 mph three-kilometer course December 1970 laterthat month reached 220885 mph 15/25-kilometer course Sikorsky received Army funding modify tail configuration ducted-fan system Flight testing mode began 1974 speeds 230 mph achieved dive aircraft reconfigured its original tail later year crashed September 1974 addition its payload versatility Blackhawk demonstrat ed very high degree maneuverability remember first time saw some film footage incredible machine flight S-67 did normal helicopter moves also looped rolled flew faster 200 mph sole S-67 crashed 1974 Farnborough air show England during low-level roll machine completely destroyed remember seeing S-67 tail-rotor blades Dave Niemans shop 1976 apparently having re trieved half-mile crash Pete Ashford US government decided against S-67 possible US military weapon its interesting note care fully Soviets looked According Czech aviation magazine article written 1974 entitled Another Ml Soviets carefully scrutinized American S-67 impressed new helicopter Mi-24 Hind designed basis technical specifications similar Sikorsky 5-67 Blackhawk attack helicopter am now working plug Blackhawk fuselage hope flying springtime BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 53 Hey US filers much invitation want now remainder report Paul Bowman Needle valve assembly standard OPS needle valve assembly lock nut type design has proven very reliable Vibration caused engine loosens locking nut allowing needle vibrate away its origi nal setting eliminate problem OPS assembly best replaced OS spring-type assembly may glued place using epoxy resin may also used plug redundant hole venturi side OS spring-type assem bly has positive click-by-click action allowing precise mixture adjustment made Fuel pressurization various methods fuel pressurization available 140 Model Aviation Complete Parts & Service both GMP SCHLUTER Heilcopten HELICOPTER HOTLINE 414 722-5025 ave found pipe pressure eliable far easiest operate ipe pressure may obtained tapping ie tuned pipe close its point largest iaineter connecting fitting nel tank vent suitable tap-fitting may e effected using short length brass ibing glued position using 24-hour raldite epoxy resin brass tube hould protrude mm ne expansion chamber mixture setting nportant single adjustment made owerplant doubt correct etting always run rich first adjusting rogressively towards optimum ach flight will noticed using ipe pressure considerable icrease fuel requirement after take ff mixture setting must therefore e assessed during flight adjusted ccordingly once airborne mixire setting becomes too lean flight iust terminated immediately avoid amage engine Fuel tank general have used ight-ounce Kavan clunk tank have und eight ounces fuel required mplete race clunk-type pickup required maintain uninterrupted fuel ed throughout prevent fuel agita foaming tank must insu ted foam rubber does uch fuselage skin bulkheads ink should positioned high iselage possible will avoid fuel raining away venturi during ght turns due increased gravita onal loading routing fuel feed ne outside top fuselage may sily broken refuelling single ent required connect tank med pipe pressure up Air intake Although relatively small 4inder capacity engines require rge volumes air operating iaximum rpm passage air ngine venturi must therefore unre ricted may accomplished lacing single opening minimum ontal area 25 square centimeters ie vacant cheek cowl Cooling FAI rules require igine enclosed exception F silencer cylinder head operat g controls Remaining within rules ifficient cooling will gained expos g airflow finned section te cylinder head An improved cooling ittern may obtained addition ducts vents placed cowling ith regard following During eration engine temperature adient exists across cylinder between ne hot exhaust port area relativecool boost port area resulting non niform expansion distorts cylinder Lusing subsequent loss power Direct oling front cylinder must erefore avoided Instead ducts id vents should positioned aximize cooling rear cylin r particular exhaust-port March 1985 141 aerosol can has done away much pinning taping praying parts permanently joined youll find less time gluing time flying SUPER JET 1/4 oz No 383 $199 1/2 oz No 384 $299 1 oz No 382 $499 2 oz No 388 $999 X-CEL 3 oz No 389 $399 REGULAR JET 1/4 oz No 385 $199 1/2 oz No 386 $299 1 oz No 381 $499 2 oz No 387 $999 4735 West Chicago Avenue 0 Chicago Illinois 60651 area Spinner rules require scalelike round-nose spinner used models pointless very carefully balance propeller use con junction unbalanced spinner Equal care must taken balancing propeller spinner alike Both may balanced accurately using special device such Hi-Point Products USA Balancer Bearing life may greatly reduced due adverse gyroscopic forces generated spinner therefore advisable remove spinner fit round-nose nut during engine testing practice sessions Fox spun-aluminum spinners have proved relia ble Unfortunately readily available country England RMcM CD cast aluminum spinners alternative require modifi cation increasing retaining bolt size 2BA Maintenance carefully-maintained engine essential consistent reli able performance great knowledge required sensible techniques must employed competitive life new engine will depend skill operator Certain parts will need replace ment time time excessive wear normally result incorrect operation regular stripping clean ing will preserve life engine Always use correct tools possible employ use small torque wrench reduces assembly time eliminates distortion due unequally-tensioned bolts have found torque 10 oz-inches round sufficient Flying Having produced reliable competitive model success dependent flying ability No matter proficient pilot may other fields Pylon Racing will present new challenge should stressed useful practice may gained under race conditions therefore necessary novice expert alike race opportunity have month Thanks Paul Bowman timely advice See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 Engines/Kilsdonk Continued page 58 Compression Technically reduction volume given amount gas such air increases pressure resulting reaction force opposite direction Compression generally referred model engines usually subjective feel force required turn propeller over dry engine Compression direct function piston-to-cylinder fit attendant wear Generally speaking engines compression will perform better some exceptions particularly ringed engines new ringed engine usually needs some running wear ring maximum compression Similar ly well-fitted ABC engine will give false feeling compression due cylinder taper characteristic bump near TDC Compression should confused compression ratio compression ratio should concern average modeler rather best left engine designers manufacturers Just record though compression ratio total cylinder volume piston BDC including volume com bustion chamber displaced pis ton divided volume displaced piston remaining volume piston TDC Compression ratio factor four-cycle engines theoretical value two-cycle engines since intake exhaust ports wide open BDC in-depth article engine authored Glenn Lee published Model Aviation 1979 Pressurization fuel system par ticular need often misunder stood should consider some form pressurization engine 142 Model Aviation iAiILiLIi J j 41 iii 14 3 Clii Using Super Jet Regular Jet X-CEL new Great unexpected field repairs Whether add fillet fill gap always keep combination best service see dealer items want available write direct add $100 per item $200 outside US Minissum order $2 tap CARL GOLDBERG MODELS INC G-285
Edition: Model Aviation - 1985/03
Page Numbers: 53, 140, 141, 142
Radio Control Pylon Racing Bill Hager FAI may back think 1985 will tell tale USA sending team FAI RC Pylon World Cham pionships Canada As promised month going finish article Paul Bowman basics FAI first report sent Z Malina about International Grand Prix Modela 1984 held Czecho slovakia First would like thank having article about races last year printed useless some modelers did write Unfortunately competitors USA again did take part greatest contests F3DFAI category Europe Pete Reed wrote have well-prepared may come next year would like use opportunity mention year 1986 will Open Champi onship Europe held Czechoslovakia years race took place again Melnik airport June 15-17 1984 Two categories RCPClub 20 F3DFAI flown original number applicants 80 reduced 59 Traditionally contest spectators whole country well abroad course two days about 4000 spectators took part RCP-Club 20 category British contestants proved very competitive main speaker protagonist contest winner P Smoothy time 76 sec Second place earned couple Czechoslo vakia Paris/P Matocha third place another British team M Griggs R Buck time 756 sec absolute record history contest British competitors have used OPS Irvine engines Czechoslo yak competitors used MVVS 35cc engines F3DFAI category winners Malina Brothers time 816 sec Just week ago won Italy Sopwith Trophy Trofeo OPS contests time 830 sec second couple Opela/Hacker fighting first until last mo ment also excellent time 816 sec third team quickest cuts flights far ideal used new MVVS 65cc GRRT engines Foreign competitors using Italian engines OPS Picco Most competitors use models American Formula event contrast Americans build models own use purchased kits winners used model Shark others Miss RJMustang props generally laminate competitors Europe asking question will Europeans Americans come Europe Will win easily Will Europeans equal rivals achievements reached Ameri can Formula 68 sec dreadful unimaginable Europeans Ameri cans must first excellent pilots Enclosed will find list results Grand Prix Modela Czecho slovakia Sopwith Trophy Italy Sopwith Trophy Results 1 MalinaMalina 2 Casutt V 3 Razzi R 4 Pick M 5 Stuckeriurgen B Grand Prix ResultsClub 20 1 P SmoothyS King 2 I ParisP Matocha 3 M GriggsR Buck 4 K HackerP Opela 5 M MalinaMS Z Malina Grand Prix ResultsFAI 1 M MalinaMS Z Malina 2 K HackerP Opela 3 J KunesZ Nadrchal 4 Z TeplyZ Teply 5 J PadelaJ Katzer Continued Page 140 March 1985 53 back Gran Prix Modela Internationai yion ace contest Czecho siovakia 1984 left ParislMatocha team look lucky contestant number race Model powered MVVS 65 GRRT engine right team refuels its Red Baron FAI Pylon Racer before heat winners FAI Pylon event callers LR 1stMaims brothers Shark model 2ndOpela/Hacker Miss RJ 3rdNadrohallKunes Mustang great race contestants have wondering some US filers will come IAS0 S~GREAT LAKES 4gj RC HELICOPTERS 321 Koiwinac Street ha WI 54952 722-5025 DIGITAL HELI-TACH now possible set rotor rpm factory specs safety problems currently associated task new tachometer attaches directly helicopter rotor rpm indicated easyto-read liquid crystal display hover Lightweight durable 3A oz comes ready use batteries instructions LIST PRICE6895 INTRODUCTORY PRICE .. 5895 info product send SASE HA VING PROBLEMS GREAT LAKES FUSELAGE KITS 1 HUGHES 500 KALT 20/MINI-BOY Fiberglass13895 2 JET RANGER KALT 30/MINI-BOY Fiberglass13895 3 JET RANGER GMP CRICKET Plastic 5895 4 HUGHES 500 GMP CRICKET PlasticS 6895 Tp COWEYITO MO 0661H COIWRtWOE PRO w/auto3643 0561H CODRA OS FSRH CRICKET1WII OS28FSRH 419 5143 umrnaz CElL OS6IFSRH OM 3U401 SUPER iWNI-DOT autorotation OS45FSRH SW95 CALL FOR HELP! PRICES GOOD THROUGH MARCH 31 1985 s~tvicm OFFERED custom Building Set Up Flight Inatniction Club Oroup Demonstrations Send $200 catalog INFO $0425 add $350 $264100 add $450 $101 over add $600 UPS COD Blue Label extra Personal Checks will held 30 days VISA Mastercard Minii wisconsin residents add 5% sales tax tail configuration consisted sweptback vertical fin extended below fuselage upper section fin housed anti-torque rotor five-blad ed rotor being fitted left side horizontal stabilizer could set vertical position hovering flight also provided main landing gear retracted fuselage fixed tail wheel vertical fin Stub wings easily detached fitted help off-load rotor during high-speed flight gunship role Blackhawk used wings carry missiles rockets four stations plus wing-end stations Sidewinder airtoair missiles Two 1500 hp General Electric turboshaft engines fitted above low-profile fuselage powered five-bladed main ro tor well anti-torque rotor aircrafts dynamic components modi fied S-61 R helicopter Wingspan 27 feet 4 inches Typical armament loads 16 TOW antitank missiles eight 19-round 275inch rocket pods plus Sidewinders An under-fuselage turret essentially 3600 field fire could fitted 20mm 30mm cannon multi-barrel 20mm cannon 40mm grenade launch er Without external ordnance troops up four tons cargo could carried sling Blackhawk civil N67 1 SA flight tested 1970 1974 its original configuration helicopter reached record speed 216844 mph three-kilometer course December 1970 laterthat month reached 220885 mph 15/25-kilometer course Sikorsky received Army funding modify tail configuration ducted-fan system Flight testing mode began 1974 speeds 230 mph achieved dive aircraft reconfigured its original tail later year crashed September 1974 addition its payload versatility Blackhawk demonstrat ed very high degree maneuverability remember first time saw some film footage incredible machine flight S-67 did normal helicopter moves also looped rolled flew faster 200 mph sole S-67 crashed 1974 Farnborough air show England during low-level roll machine completely destroyed remember seeing S-67 tail-rotor blades Dave Niemans shop 1976 apparently having re trieved half-mile crash Pete Ashford US government decided against S-67 possible US military weapon its interesting note care fully Soviets looked According Czech aviation magazine article written 1974 entitled Another Ml Soviets carefully scrutinized American S-67 impressed new helicopter Mi-24 Hind designed basis technical specifications similar Sikorsky 5-67 Blackhawk attack helicopter am now working plug Blackhawk fuselage hope flying springtime BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 53 Hey US filers much invitation want now remainder report Paul Bowman Needle valve assembly standard OPS needle valve assembly lock nut type design has proven very reliable Vibration caused engine loosens locking nut allowing needle vibrate away its origi nal setting eliminate problem OPS assembly best replaced OS spring-type assembly may glued place using epoxy resin may also used plug redundant hole venturi side OS spring-type assem bly has positive click-by-click action allowing precise mixture adjustment made Fuel pressurization various methods fuel pressurization available 140 Model Aviation Complete Parts & Service both GMP SCHLUTER Heilcopten HELICOPTER HOTLINE 414 722-5025 ave found pipe pressure eliable far easiest operate ipe pressure may obtained tapping ie tuned pipe close its point largest iaineter connecting fitting nel tank vent suitable tap-fitting may e effected using short length brass ibing glued position using 24-hour raldite epoxy resin brass tube hould protrude mm ne expansion chamber mixture setting nportant single adjustment made owerplant doubt correct etting always run rich first adjusting rogressively towards optimum ach flight will noticed using ipe pressure considerable icrease fuel requirement after take ff mixture setting must therefore e assessed during flight adjusted ccordingly once airborne mixire setting becomes too lean flight iust terminated immediately avoid amage engine Fuel tank general have used ight-ounce Kavan clunk tank have und eight ounces fuel required mplete race clunk-type pickup required maintain uninterrupted fuel ed throughout prevent fuel agita foaming tank must insu ted foam rubber does uch fuselage skin bulkheads ink should positioned high iselage possible will avoid fuel raining away venturi during ght turns due increased gravita onal loading routing fuel feed ne outside top fuselage may sily broken refuelling single ent required connect tank med pipe pressure up Air intake Although relatively small 4inder capacity engines require rge volumes air operating iaximum rpm passage air ngine venturi must therefore unre ricted may accomplished lacing single opening minimum ontal area 25 square centimeters ie vacant cheek cowl Cooling FAI rules require igine enclosed exception F silencer cylinder head operat g controls Remaining within rules ifficient cooling will gained expos g airflow finned section te cylinder head An improved cooling ittern may obtained addition ducts vents placed cowling ith regard following During eration engine temperature adient exists across cylinder between ne hot exhaust port area relativecool boost port area resulting non niform expansion distorts cylinder Lusing subsequent loss power Direct oling front cylinder must erefore avoided Instead ducts id vents should positioned aximize cooling rear cylin r particular exhaust-port March 1985 141 aerosol can has done away much pinning taping praying parts permanently joined youll find less time gluing time flying SUPER JET 1/4 oz No 383 $199 1/2 oz No 384 $299 1 oz No 382 $499 2 oz No 388 $999 X-CEL 3 oz No 389 $399 REGULAR JET 1/4 oz No 385 $199 1/2 oz No 386 $299 1 oz No 381 $499 2 oz No 387 $999 4735 West Chicago Avenue 0 Chicago Illinois 60651 area Spinner rules require scalelike round-nose spinner used models pointless very carefully balance propeller use con junction unbalanced spinner Equal care must taken balancing propeller spinner alike Both may balanced accurately using special device such Hi-Point Products USA Balancer Bearing life may greatly reduced due adverse gyroscopic forces generated spinner therefore advisable remove spinner fit round-nose nut during engine testing practice sessions Fox spun-aluminum spinners have proved relia ble Unfortunately readily available country England RMcM CD cast aluminum spinners alternative require modifi cation increasing retaining bolt size 2BA Maintenance carefully-maintained engine essential consistent reli able performance great knowledge required sensible techniques must employed competitive life new engine will depend skill operator Certain parts will need replace ment time time excessive wear normally result incorrect operation regular stripping clean ing will preserve life engine Always use correct tools possible employ use small torque wrench reduces assembly time eliminates distortion due unequally-tensioned bolts have found torque 10 oz-inches round sufficient Flying Having produced reliable competitive model success dependent flying ability No matter proficient pilot may other fields Pylon Racing will present new challenge should stressed useful practice may gained under race conditions therefore necessary novice expert alike race opportunity have month Thanks Paul Bowman timely advice See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 Engines/Kilsdonk Continued page 58 Compression Technically reduction volume given amount gas such air increases pressure resulting reaction force opposite direction Compression generally referred model engines usually subjective feel force required turn propeller over dry engine Compression direct function piston-to-cylinder fit attendant wear Generally speaking engines compression will perform better some exceptions particularly ringed engines new ringed engine usually needs some running wear ring maximum compression Similar ly well-fitted ABC engine will give false feeling compression due cylinder taper characteristic bump near TDC Compression should confused compression ratio compression ratio should concern average modeler rather best left engine designers manufacturers Just record though compression ratio total cylinder volume piston BDC including volume com bustion chamber displaced pis ton divided volume displaced piston remaining volume piston TDC Compression ratio factor four-cycle engines theoretical value two-cycle engines since intake exhaust ports wide open BDC in-depth article engine authored Glenn Lee published Model Aviation 1979 Pressurization fuel system par ticular need often misunder stood should consider some form pressurization engine 142 Model Aviation iAiILiLIi J j 41 iii 14 3 Clii Using Super Jet Regular Jet X-CEL new Great unexpected field repairs Whether add fillet fill gap always keep combination best service see dealer items want available write direct add $100 per item $200 outside US Minissum order $2 tap CARL GOLDBERG MODELS INC G-285
