OUR 1989 Formula racing season ended Championship race held Phoenix AZ lot us another race same place different timeFebruary 24-25would serve season opener 49 entries time Scott Manning time prove good placing 1988 Championship Race no flukehe won Congratulations Scott list top lOin 89 1 Scott Man ning 11000 2 Lyle Larson 11296 3 Mike Helsel 11370 4 Dave Shadel 10948 fast time 5 Henry Bartel 11300 6 Rich ard Verano 10978 7 Don McStay 12000 8 Norm Johnson 11426 9 Rick Tocci 11599 10 Mark Greer 11734 couple years ago Brian Richmond wrote article props Ive lot requests run information can apply Py lon Racers way Brian set record fast time Formula last year 1059 Over Brian Richmond asked discuss few ideas ories guesses about prdpeller technology will bore anyone complicated formulas because dont know instead will dis cuss what has worked Formula event over years First foremost must choose good piece wood define good piece wood stiff straight grain reasonably bal anced evenly pitched sounds perfect its hard find props much onehalf inch Out pitch far Out balance put balancer heavy blade hits bottom hard will dent table Trying fix requires much work sanding will weaken blade point resonance structural failure Planes dont go fast blade Tools required consist good balancer sanding block 80- 100- 220- 400-grit sand paper single-edge razor blade Prather pitch gauge borrow friend some Hot Stuff about 45 minutes cannot tell what prop begin requires experimentation part Some engines develop power torque low rpm others seem develop higher rpm Some engines will unload higher pitch propellers others wont will have deter through trial error what diameter pitch rpm range works best engine event can offer techniques clean up prop once have determined above First put prop pitch gauge Continued page 167 54 Model Aviation Radio Control Pylon Racing Bill Hager 4 Holly Springs Dr Conroe TX 77302 Jim Allen fuels up first year Formula also Quickie 500 Vp 1990 Want join NMPRA Supply Information requested check proper category membership desired Just follow directions sample form REALISTIC PILOT FIGURES Figures Available Now 1/3 Civilian S Navy /4 Civilian / ME /s Civilian AE Bust $1995 & $4 UPS $795 & $3 UPS Bust Phone 201-996-4414 ENIGh1TS CF ThI AIIINC PO Box 187 Pittatown NJ 08867 RC Scale/Crooks Continued page 163 picture ever taken Navy photograph er request very specific about aircraft picture need Preferably should request picture aircraft type serial number approximate date squadron write address will clue particulars fees Customer Services Department Defense Still Media Records Cen ter Code SSRC Washington DC 20374-1681 want model look better have better ground handling Robart has just ticket have made excellent Giant Scale re tracts shock-absorbing struts some time Now have same quality retracts shock-absorbing struts 40/120-size models set designed specifically Yellow Aircraft F-4 kit However will work Spring-Air slimline retracts Fear solution Contact Robart theyll help Out Flying Dynamax/OS ducted-fan combina tion device available will help both fuel economy aircraft performance considerably called turbine-body fairing streamlines carburetor area en gine usual unfaired installation high-speed airflow creates negative draft carburetor enclosing area streamline rear engine carb now draws least neutralif positiveair pressure aerodynamically clean model SR-71 approximately 7-mph speed increase accompa RONS MODEL Radio Controlled BIJILDINGAirplaneN Other Aircraft Boats 213451-0484 Build Fly WeU Call Write 435 San Vicente Blvd J Santa Monica CA 90402I OTBE COOL HSTAY COOL PERFECT SHADS AT THE FLYING FIELDTRACEOUT CARPING OR AT ThE LAKE OFFICIAL SHADE TENT AT 1987 RATS FOR N/C PATFERN JUDGES SHADE TENT AT 1988 RATS AT R/C PAIFERR SITES FOR OFFICIALS HEADOUARTERS TENTS AND TRANSI4ITIER IMPOONDS POkThE$AT5 500141 ---- No center pole nearly 7 tall Opaque heat reflecting canopy QIX8E2LLN0 ---- 5 Minutes 6R1R LIOlnLWGHT Weighs 6 1/2 pounds WI8D8r15TANT 6110 Tested tD 48 MPH ADJUSTABLE -- Level tilted side EXFAIIDADIE ---- Too three can joined PRICE Econoey helD$39OD $488OPS Sportesan 6e15$4395s $488UPS Dining Nob$5788s $488UPS Sporthing 9s18$8358 $558UPS Mech Tote-Tarp 4116$ 795i $288OPS Trak-Lok-Eve Kit TAA2$1008$288UPS Trak-Iok-Eye Kit TAA3$1458 $288UPS CALLLEQLL FRSZ 1-800-421-4626 4MCO ORDERI OHALERS & DISTRIR5TOR CALLSNAf 209 SW BUCY AVE Free literature availahieBARTLESVILLEOK 74083 4M CoepanyPH 918-336-9445 want Scat Cat have twisted wing dont want unevenly pitched props take single-edge razor blade scrape back prop tip hub until perfectly flat stations should take few minutes Now unless youre ready try some trick top secret stuff youre done back blades However never quit Depending rpm diameter tips blades can turning 400-500 mph Does ajet airplane uti lize flat-bottom wing does pro peller accept lot drag run fulllength flat-bottom blades could get rid drag would turn blade faster could use larger blade same rpm either way youll first down #1 pylon start back blade about station sixor one-third blade length tipand carefully work toward tip piece 100-grit black sandpaper Take little off leading edge falr amount off trail ing edge being careful touch center blade approximately 30% back lead ing edge Compare blade other care fully Semisyminetrical fine just dont go too far Doing right takes lot practice get too frustrated simply take prop break half will feel lot better Usually takes two such sac rifices before have part mastered Another trick have known try deals inner root section blade part moving through air very fast Some say root doesnt provide thrust just con nects tip hub streamlined enough make root section pull its own weight Pic ture high-speed wing slow flight leading edge devices out flaps down PORT5-10ADSandI8AXzW$yS kits use R/Vs have canopy track nied fuel savings about ounce per min ute per engine fairings bargain $9 Contact DC Aviation PO Box 98 Big Rock IL 60511 some events comlng up summer Chicago area ones Im aware sponsored Fox Valley Aero Club FVAC St Charles IL First new Scale Masters Qualifier June 23-24 Sportsman Expert Giant Scale classes Contact Contest Manager Tom Walker 1-708/584-7616 Contest Director Dennis Crooks 1-708/556-3729 Next second annual FVAC Jet Rally July 21-22 models dont have Scale Contact Contest Director Don Kanak 1-708/ 416-6940 home 1-708/834-9005 office Finally August 19 FVAC hosts gen eral alr show event welcomes models Ugly Stiks contest-ready F-14 Tomcats Contact Larry Sperling 1-708/3101222 Bob Walker 1-708/584-7616 would like participate show RC Pylon Racing/Hager Continued page 54 check stations three through about nine com pare blade other pitch dont care doesnt pitch out what advertised Its critical Remember propeller nothing rotating wing Its job move mass air rearward resulting forward thrust does airfoil lower pressure top blade pitch tries provide healthy angle attack given rpm airspeed CAT NO 106 Proof Switch Retail S995 Add $125 shipping Send $150 catalog Michigan residents add 4% sales tax IMPROVE YOUR 1991 SWITCH OVER eJj Proof Switch Positive Locking Prevents Arriving field dead batteries Accidental switching off before take-off Will vibrate apart causing loss radio Does require special mounts Works radios Ideal seaplanes completely water proof SEE YOUR LOCAL HOBBY DEALER 0 ej unavailable locally send Bru Line Industries Inc Box 3786 Center Line Ml 48015 June 1990 167 i& o 0 & 59 0c~ ENTY OF FREE PARKING MARC SHOW MID ATLANTIC RADIO CONTROL JUNE 2 AND 3 1990 Saturday 9 am 5 pm Sunday 10 am to4pm MARYLAND STATE FAIR GROUNDS TIMONIUM MARYLAND Sponsored THE RADIO CONTROL MODELERS OF BALTIMORE *PAIAONaUNOS flMOIiiuM No SALTIMOAE /S * SWAP SHOP $10 FULL TABLE PR DAY NO DEALERS PLEASE Pre-Registration CALL WAYNE MELLOR 301-788-3742 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Road Towson MD 21204 301-825-8138 STACY PASS 301-484-9139 would see some undercamber excel lent source lift thrust props slow speeds brother turned fastest mula time country last year using prop undercambered root airfoil section flatbottom midsection semisymmetrical tips want try use finger 80grit sandpaper Slowly undercamber root point about one-third way out blade deepest camber should about 30% back leading edge transition undercamber flat section semisymmetrical should very gradual Now hit ehtire back side prop first 220- 400-grit sandpaper unscrew pitch gauge block hub hard part over tops blades usually pretty good shape require minor deanup work. sharpest leading trailing edge possible re sults lowest drag component rea son full-scale propellers wings razor sharp because FOD foreign object damage Ed problems Rocks pebbles runways would damage leading edges usually dont have problem sharpen leading edge block 100-grit paper thin sharpen trailing edge top block finish up single-edge razor blade again scraping tip toward hub trailing edges stock props have very blunt edge near hub very important clean up area Now lightly block-sand entire top thai no humps pre vious steps checking prop balancer point final balancing go final step cutting prop de sired length shaping tips Theory seents lo indicate otir rpm ranges sweptback oval tips work best cut blade now de sired length slight sweepback angle 60o 700 round back front corner sandpaper block next step feel very impor tant obtainlng good tip round top blade down meet bottom using sanding block carefully preserve airfoil done correctly trailing edge corner will get paper thin Keep sanding nearly smooth out corner will now fall off result angled-back tip sweptback leading edge slightly rounded trailing edge corner Now lightly sand entire blade 400grit paper Seal Hot Stuff sand again No 400 paper Youre done Whether just use basic cleanup tech niques experiment back blades I think will see difference Now really want go fast lets start racing mula Florida again See races Thanks again Brian Richmond sharing some speed secrets us As promised list get some much-needed racing supplies Formula Kits LII ToniPrather Products 1660 Revenna Wilmington CA 90744 tel l-213/835A64 Terry Prather Denight Special Cosmic WindPauls Fly ing Stuff PO Box 121 Escondido CA 92025 tel 1-619/743-5458 Paul Steinberg ght Special Shark Estrellitd Cosmic WindCalifornia Speed Pros 32221 Alipaz #115 San Juan Capistrano CA 92675 tel 1714/661-7430 Long LAI Midget Mustang Pole Cat Ritchs Hobbies 4104 Lark Houston TX 77025 tel 1-713/661-5458 Dick Ritch ShoestringDon Rice 12055 206th Issa quah WA 90827 tel 1-206/228-4170 Shoestring Lii ToniTom Storm 1420 W 160th Seattle WA 98166 tel 1-206/246-4258 Estrellita PAl Midget MustangJerry Small 502 Cherry Southlake TX 76092 tel 1817/481-6456 Engines stock SuperTigre X- 40Ritchs Hobbies see list ing under Kits above SuperTigre X- 40Modeltronics 4305 Kelly Ft Smith AZ 72904 tel 1-501/7828506 Terry Rollins K&B 40K&B Mfg 12152 5 Woodruff Downey CA 90241 tel 1-213/803-1423 J Brodbeck Engines custom Work Custom rechrome engine accessories custom-built engines engine-rebuild specialist Boss Racing Engines 7515 Brookleaf Houston TX 77041 tel 1-713/937-0553 Dave Layman Engines modified ready-to-race SuperTigre X- 40Performance Specialties PO Box 4003 Carlsbad CA 92008 tel 1-619/ 729-1658 Dave hadel K&B 40Lee Custom Engines 7215 Foot hill Tujunga CA 71042 tel 1-213/803-1423 Clarence Lee Accessories Travel Box first-class aircrdft transport containersThe Brown Box 12083 Caminito Corriente San Diego CA 92128 tel 1-619/4875670 Chuck Brown 168 Model Aviation $3500 includes Crystals Certification Two-inch spinner nylon Racing wheels F-i accessoriesPerformance Specialties see listing under Engines modified ready-to-race above Bar-stock engine mountsPauls Flying Stuff see listing under Kits above Custom-built modelsKristopher Wilson tel1-714/731-5602 Painted PilotsK McDaniels 14601 Al kosh Jamul CA 92035 tel 1-619/698-9307 Custom-built F-isCalifornia Speed Pros see listing under Kits above Q500 Kits Thunder Q-IIPauls Flying Stuff see list ing under Formula Kits above China ClipperModel Tech available hobby stores T-TailedCalifornia Speed Pros see listing under Formula Kits above SpicklerSpickler Models available hobby stores Texas OutlawRitchs Hobbies see listing under Formula Kits above Scat CatFlite Line Models available hobby stores Yellow JacketMills Airplane Models 2868 Hambleton Riva MD 21140 tel 1-301/9563308 glass Q500Barrys Model Products 600 Vincent Mt Dora FL 32757 1-904/383-1122 Barry West Accessories Engine mount closed-in ypeFourmost Products available hobby stores Engine mountPauls Flying Stuff see list ing under Formula Kits above I4qzeelsPerformance Specialties see listing under Formula Engines modified ready-torace above Kraft wheelsCalifornia Speed Pros see list ing under Formula Kits above Prop balancerHigh Point available hobby stores Pitch gaugePrather Products see listing un der Formula Kits above Royal pro-tachometerTack R/C Box 24593 Denver CO 80224 tel1-303/757-4082 Carbon props sport props custom foam workBarrys Model Products see listing under Q500 Kits above Quarter Midget Kits Estrellita Heinkel II Spitfire Toni Fire crackerGa ger Aircraft Supply 8425 Auburn Ft Wayne IN 46825 tel1-219/489-5060 Napair HestonCalifornia Speed Pros see listing under Formula Kits above Shark Deja Vu NapairQuality Fiberglass 521 96th Blame MN 55434 tel 1-612/7802737 Bob Sealy Rivets Latsha AJ Special ME-109 Matney Models 11325 Harold Luna Pier MI 48157 tel 1-313/848-8195 Kevin Matney FolkertsJim DeYoung 16627 Dobson South Holland IL 60473 tel1-312/339-9541 P-39 P-63Greg Doe 407 Pony Smyrna TN 37167 tel 1-615/459-6845 NapairCalifornia Speed Pros see listing under Formula Kits above Pole KittyGail Jacobson 2205 Britely Terr College Park GA 30349 tel 1-404/763036 1 P-SiDuane Gall 12800 Asbury Lakewood CO 80228 tel 1-303/969-9527 Pole Cat Denight SpecialBarrys Model Products see listing under Formula Kits above have missed someone please send infor mation will update list Want join NMPRA National Miniature Pylon Racing Association Ive received lot mail asking join Ive included repro duction membership application its printed first page column month Just follow directions See next month RC Helicopters/Jolly Continued page 55 Actually step wasnt necessary prior mounting JR gyro really foolproof de sign Everything logically set up gyro di rection easily reversed rotating connector 1800 its socket JR gyro twoposition-adjustable-gain type Mine works very well said very simple unit set up next step setting up PCM 10 Helicopter First let say JR PCM 10 definitely represents state-of-the-an Heli ra dios am very impressed extreme sophis tication system same time JR has taken word quality new pinnacle sys tem came NES 4031 servos doubleball-bearing-output monsters incredibly strong tough same time have zero backlashContinued page 72 PRODUCTS FOR ThE OISCERNING MOOtLER Complete Line Exhaust Systems Pipe Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanship & Padormanc June 1990 169 - ency Conversion Special Fast Turnaround Now Available CALL Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies Word Engines Spectrum Analyzers Calibrated Test Instruments UPS US Mail Federal Send Large Self AddressedExpress Used [Envelope BrochuresMastercard Visa Accepted Large Inventory R/C Parts Crystals SUCKER-KIT$5995 Show Tell Video$3995 Add $400 shipping & handling Ml residents add 4% sales tax Send 3100 SASE br producl hit samples real wood veneer skins Product List Includes Gapless Arrow cwEShaft Hinges Carbon Tow Mylar Shut Eaiand High-Tech items aler Inquires Welcome CHECK OR MONEY ORDER TO PO Box 866 Lapeer MI 48446 313 664-3330 imposite Aircraft Eng & Supply FAX
Edition: Model Aviation - 1990/06
Page Numbers: 54, 167, 168, 169
OUR 1989 Formula racing season ended Championship race held Phoenix AZ lot us another race same place different timeFebruary 24-25would serve season opener 49 entries time Scott Manning time prove good placing 1988 Championship Race no flukehe won Congratulations Scott list top lOin 89 1 Scott Man ning 11000 2 Lyle Larson 11296 3 Mike Helsel 11370 4 Dave Shadel 10948 fast time 5 Henry Bartel 11300 6 Rich ard Verano 10978 7 Don McStay 12000 8 Norm Johnson 11426 9 Rick Tocci 11599 10 Mark Greer 11734 couple years ago Brian Richmond wrote article props Ive lot requests run information can apply Py lon Racers way Brian set record fast time Formula last year 1059 Over Brian Richmond asked discuss few ideas ories guesses about prdpeller technology will bore anyone complicated formulas because dont know instead will dis cuss what has worked Formula event over years First foremost must choose good piece wood define good piece wood stiff straight grain reasonably bal anced evenly pitched sounds perfect its hard find props much onehalf inch Out pitch far Out balance put balancer heavy blade hits bottom hard will dent table Trying fix requires much work sanding will weaken blade point resonance structural failure Planes dont go fast blade Tools required consist good balancer sanding block 80- 100- 220- 400-grit sand paper single-edge razor blade Prather pitch gauge borrow friend some Hot Stuff about 45 minutes cannot tell what prop begin requires experimentation part Some engines develop power torque low rpm others seem develop higher rpm Some engines will unload higher pitch propellers others wont will have deter through trial error what diameter pitch rpm range works best engine event can offer techniques clean up prop once have determined above First put prop pitch gauge Continued page 167 54 Model Aviation Radio Control Pylon Racing Bill Hager 4 Holly Springs Dr Conroe TX 77302 Jim Allen fuels up first year Formula also Quickie 500 Vp 1990 Want join NMPRA Supply Information requested check proper category membership desired Just follow directions sample form REALISTIC PILOT FIGURES Figures Available Now 1/3 Civilian S Navy /4 Civilian / ME /s Civilian AE Bust $1995 & $4 UPS $795 & $3 UPS Bust Phone 201-996-4414 ENIGh1TS CF ThI AIIINC PO Box 187 Pittatown NJ 08867 RC Scale/Crooks Continued page 163 picture ever taken Navy photograph er request very specific about aircraft picture need Preferably should request picture aircraft type serial number approximate date squadron write address will clue particulars fees Customer Services Department Defense Still Media Records Cen ter Code SSRC Washington DC 20374-1681 want model look better have better ground handling Robart has just ticket have made excellent Giant Scale re tracts shock-absorbing struts some time Now have same quality retracts shock-absorbing struts 40/120-size models set designed specifically Yellow Aircraft F-4 kit However will work Spring-Air slimline retracts Fear solution Contact Robart theyll help Out Flying Dynamax/OS ducted-fan combina tion device available will help both fuel economy aircraft performance considerably called turbine-body fairing streamlines carburetor area en gine usual unfaired installation high-speed airflow creates negative draft carburetor enclosing area streamline rear engine carb now draws least neutralif positiveair pressure aerodynamically clean model SR-71 approximately 7-mph speed increase accompa RONS MODEL Radio Controlled BIJILDINGAirplaneN Other Aircraft Boats 213451-0484 Build Fly WeU Call Write 435 San Vicente Blvd J Santa Monica CA 90402I OTBE COOL HSTAY COOL PERFECT SHADS AT THE FLYING FIELDTRACEOUT CARPING OR AT ThE LAKE OFFICIAL SHADE TENT AT 1987 RATS FOR N/C PATFERN JUDGES SHADE TENT AT 1988 RATS AT R/C PAIFERR SITES FOR OFFICIALS HEADOUARTERS TENTS AND TRANSI4ITIER IMPOONDS POkThE$AT5 500141 ---- No center pole nearly 7 tall Opaque heat reflecting canopy QIX8E2LLN0 ---- 5 Minutes 6R1R LIOlnLWGHT Weighs 6 1/2 pounds WI8D8r15TANT 6110 Tested tD 48 MPH ADJUSTABLE -- Level tilted side EXFAIIDADIE ---- Too three can joined PRICE Econoey helD$39OD $488OPS Sportesan 6e15$4395s $488UPS Dining Nob$5788s $488UPS Sporthing 9s18$8358 $558UPS Mech Tote-Tarp 4116$ 795i $288OPS Trak-Lok-Eve Kit TAA2$1008$288UPS Trak-Iok-Eye Kit TAA3$1458 $288UPS CALLLEQLL FRSZ 1-800-421-4626 4MCO ORDERI OHALERS & DISTRIR5TOR CALLSNAf 209 SW BUCY AVE Free literature availahieBARTLESVILLEOK 74083 4M CoepanyPH 918-336-9445 want Scat Cat have twisted wing dont want unevenly pitched props take single-edge razor blade scrape back prop tip hub until perfectly flat stations should take few minutes Now unless youre ready try some trick top secret stuff youre done back blades However never quit Depending rpm diameter tips blades can turning 400-500 mph Does ajet airplane uti lize flat-bottom wing does pro peller accept lot drag run fulllength flat-bottom blades could get rid drag would turn blade faster could use larger blade same rpm either way youll first down #1 pylon start back blade about station sixor one-third blade length tipand carefully work toward tip piece 100-grit black sandpaper Take little off leading edge falr amount off trail ing edge being careful touch center blade approximately 30% back lead ing edge Compare blade other care fully Semisyminetrical fine just dont go too far Doing right takes lot practice get too frustrated simply take prop break half will feel lot better Usually takes two such sac rifices before have part mastered Another trick have known try deals inner root section blade part moving through air very fast Some say root doesnt provide thrust just con nects tip hub streamlined enough make root section pull its own weight Pic ture high-speed wing slow flight leading edge devices out flaps down PORT5-10ADSandI8AXzW$yS kits use R/Vs have canopy track nied fuel savings about ounce per min ute per engine fairings bargain $9 Contact DC Aviation PO Box 98 Big Rock IL 60511 some events comlng up summer Chicago area ones Im aware sponsored Fox Valley Aero Club FVAC St Charles IL First new Scale Masters Qualifier June 23-24 Sportsman Expert Giant Scale classes Contact Contest Manager Tom Walker 1-708/584-7616 Contest Director Dennis Crooks 1-708/556-3729 Next second annual FVAC Jet Rally July 21-22 models dont have Scale Contact Contest Director Don Kanak 1-708/ 416-6940 home 1-708/834-9005 office Finally August 19 FVAC hosts gen eral alr show event welcomes models Ugly Stiks contest-ready F-14 Tomcats Contact Larry Sperling 1-708/3101222 Bob Walker 1-708/584-7616 would like participate show RC Pylon Racing/Hager Continued page 54 check stations three through about nine com pare blade other pitch dont care doesnt pitch out what advertised Its critical Remember propeller nothing rotating wing Its job move mass air rearward resulting forward thrust does airfoil lower pressure top blade pitch tries provide healthy angle attack given rpm airspeed CAT NO 106 Proof Switch Retail S995 Add $125 shipping Send $150 catalog Michigan residents add 4% sales tax IMPROVE YOUR 1991 SWITCH OVER eJj Proof Switch Positive Locking Prevents Arriving field dead batteries Accidental switching off before take-off Will vibrate apart causing loss radio Does require special mounts Works radios Ideal seaplanes completely water proof SEE YOUR LOCAL HOBBY DEALER 0 ej unavailable locally send Bru Line Industries Inc Box 3786 Center Line Ml 48015 June 1990 167 i& o 0 & 59 0c~ ENTY OF FREE PARKING MARC SHOW MID ATLANTIC RADIO CONTROL JUNE 2 AND 3 1990 Saturday 9 am 5 pm Sunday 10 am to4pm MARYLAND STATE FAIR GROUNDS TIMONIUM MARYLAND Sponsored THE RADIO CONTROL MODELERS OF BALTIMORE *PAIAONaUNOS flMOIiiuM No SALTIMOAE /S * SWAP SHOP $10 FULL TABLE PR DAY NO DEALERS PLEASE Pre-Registration CALL WAYNE MELLOR 301-788-3742 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Road Towson MD 21204 301-825-8138 STACY PASS 301-484-9139 would see some undercamber excel lent source lift thrust props slow speeds brother turned fastest mula time country last year using prop undercambered root airfoil section flatbottom midsection semisymmetrical tips want try use finger 80grit sandpaper Slowly undercamber root point about one-third way out blade deepest camber should about 30% back leading edge transition undercamber flat section semisymmetrical should very gradual Now hit ehtire back side prop first 220- 400-grit sandpaper unscrew pitch gauge block hub hard part over tops blades usually pretty good shape require minor deanup work. sharpest leading trailing edge possible re sults lowest drag component rea son full-scale propellers wings razor sharp because FOD foreign object damage Ed problems Rocks pebbles runways would damage leading edges usually dont have problem sharpen leading edge block 100-grit paper thin sharpen trailing edge top block finish up single-edge razor blade again scraping tip toward hub trailing edges stock props have very blunt edge near hub very important clean up area Now lightly block-sand entire top thai no humps pre vious steps checking prop balancer point final balancing go final step cutting prop de sired length shaping tips Theory seents lo indicate otir rpm ranges sweptback oval tips work best cut blade now de sired length slight sweepback angle 60o 700 round back front corner sandpaper block next step feel very impor tant obtainlng good tip round top blade down meet bottom using sanding block carefully preserve airfoil done correctly trailing edge corner will get paper thin Keep sanding nearly smooth out corner will now fall off result angled-back tip sweptback leading edge slightly rounded trailing edge corner Now lightly sand entire blade 400grit paper Seal Hot Stuff sand again No 400 paper Youre done Whether just use basic cleanup tech niques experiment back blades I think will see difference Now really want go fast lets start racing mula Florida again See races Thanks again Brian Richmond sharing some speed secrets us As promised list get some much-needed racing supplies Formula Kits LII ToniPrather Products 1660 Revenna Wilmington CA 90744 tel l-213/835A64 Terry Prather Denight Special Cosmic WindPauls Fly ing Stuff PO Box 121 Escondido CA 92025 tel 1-619/743-5458 Paul Steinberg ght Special Shark Estrellitd Cosmic WindCalifornia Speed Pros 32221 Alipaz #115 San Juan Capistrano CA 92675 tel 1714/661-7430 Long LAI Midget Mustang Pole Cat Ritchs Hobbies 4104 Lark Houston TX 77025 tel 1-713/661-5458 Dick Ritch ShoestringDon Rice 12055 206th Issa quah WA 90827 tel 1-206/228-4170 Shoestring Lii ToniTom Storm 1420 W 160th Seattle WA 98166 tel 1-206/246-4258 Estrellita PAl Midget MustangJerry Small 502 Cherry Southlake TX 76092 tel 1817/481-6456 Engines stock SuperTigre X- 40Ritchs Hobbies see list ing under Kits above SuperTigre X- 40Modeltronics 4305 Kelly Ft Smith AZ 72904 tel 1-501/7828506 Terry Rollins K&B 40K&B Mfg 12152 5 Woodruff Downey CA 90241 tel 1-213/803-1423 J Brodbeck Engines custom Work Custom rechrome engine accessories custom-built engines engine-rebuild specialist Boss Racing Engines 7515 Brookleaf Houston TX 77041 tel 1-713/937-0553 Dave Layman Engines modified ready-to-race SuperTigre X- 40Performance Specialties PO Box 4003 Carlsbad CA 92008 tel 1-619/ 729-1658 Dave hadel K&B 40Lee Custom Engines 7215 Foot hill Tujunga CA 71042 tel 1-213/803-1423 Clarence Lee Accessories Travel Box first-class aircrdft transport containersThe Brown Box 12083 Caminito Corriente San Diego CA 92128 tel 1-619/4875670 Chuck Brown 168 Model Aviation $3500 includes Crystals Certification Two-inch spinner nylon Racing wheels F-i accessoriesPerformance Specialties see listing under Engines modified ready-to-race above Bar-stock engine mountsPauls Flying Stuff see listing under Kits above Custom-built modelsKristopher Wilson tel1-714/731-5602 Painted PilotsK McDaniels 14601 Al kosh Jamul CA 92035 tel 1-619/698-9307 Custom-built F-isCalifornia Speed Pros see listing under Kits above Q500 Kits Thunder Q-IIPauls Flying Stuff see list ing under Formula Kits above China ClipperModel Tech available hobby stores T-TailedCalifornia Speed Pros see listing under Formula Kits above SpicklerSpickler Models available hobby stores Texas OutlawRitchs Hobbies see listing under Formula Kits above Scat CatFlite Line Models available hobby stores Yellow JacketMills Airplane Models 2868 Hambleton Riva MD 21140 tel 1-301/9563308 glass Q500Barrys Model Products 600 Vincent Mt Dora FL 32757 1-904/383-1122 Barry West Accessories Engine mount closed-in ypeFourmost Products available hobby stores Engine mountPauls Flying Stuff see list ing under Formula Kits above I4qzeelsPerformance Specialties see listing under Formula Engines modified ready-torace above Kraft wheelsCalifornia Speed Pros see list ing under Formula Kits above Prop balancerHigh Point available hobby stores Pitch gaugePrather Products see listing un der Formula Kits above Royal pro-tachometerTack R/C Box 24593 Denver CO 80224 tel1-303/757-4082 Carbon props sport props custom foam workBarrys Model Products see listing under Q500 Kits above Quarter Midget Kits Estrellita Heinkel II Spitfire Toni Fire crackerGa ger Aircraft Supply 8425 Auburn Ft Wayne IN 46825 tel1-219/489-5060 Napair HestonCalifornia Speed Pros see listing under Formula Kits above Shark Deja Vu NapairQuality Fiberglass 521 96th Blame MN 55434 tel 1-612/7802737 Bob Sealy Rivets Latsha AJ Special ME-109 Matney Models 11325 Harold Luna Pier MI 48157 tel 1-313/848-8195 Kevin Matney FolkertsJim DeYoung 16627 Dobson South Holland IL 60473 tel1-312/339-9541 P-39 P-63Greg Doe 407 Pony Smyrna TN 37167 tel 1-615/459-6845 NapairCalifornia Speed Pros see listing under Formula Kits above Pole KittyGail Jacobson 2205 Britely Terr College Park GA 30349 tel 1-404/763036 1 P-SiDuane Gall 12800 Asbury Lakewood CO 80228 tel 1-303/969-9527 Pole Cat Denight SpecialBarrys Model Products see listing under Formula Kits above have missed someone please send infor mation will update list Want join NMPRA National Miniature Pylon Racing Association Ive received lot mail asking join Ive included repro duction membership application its printed first page column month Just follow directions See next month RC Helicopters/Jolly Continued page 55 Actually step wasnt necessary prior mounting JR gyro really foolproof de sign Everything logically set up gyro di rection easily reversed rotating connector 1800 its socket JR gyro twoposition-adjustable-gain type Mine works very well said very simple unit set up next step setting up PCM 10 Helicopter First let say JR PCM 10 definitely represents state-of-the-an Heli ra dios am very impressed extreme sophis tication system same time JR has taken word quality new pinnacle sys tem came NES 4031 servos doubleball-bearing-output monsters incredibly strong tough same time have zero backlashContinued page 72 PRODUCTS FOR ThE OISCERNING MOOtLER Complete Line Exhaust Systems Pipe Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanship & Padormanc June 1990 169 - ency Conversion Special Fast Turnaround Now Available CALL Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies Word Engines Spectrum Analyzers Calibrated Test Instruments UPS US Mail Federal Send Large Self AddressedExpress Used [Envelope BrochuresMastercard Visa Accepted Large Inventory R/C Parts Crystals SUCKER-KIT$5995 Show Tell Video$3995 Add $400 shipping & handling Ml residents add 4% sales tax Send 3100 SASE br producl hit samples real wood veneer skins Product List Includes Gapless Arrow cwEShaft Hinges Carbon Tow Mylar Shut Eaiand High-Tech items aler Inquires Welcome CHECK OR MONEY ORDER TO PO Box 866 Lapeer MI 48446 313 664-3330 imposite Aircraft Eng & Supply FAX
Edition: Model Aviation - 1990/06
Page Numbers: 54, 167, 168, 169
OUR 1989 Formula racing season ended Championship race held Phoenix AZ lot us another race same place different timeFebruary 24-25would serve season opener 49 entries time Scott Manning time prove good placing 1988 Championship Race no flukehe won Congratulations Scott list top lOin 89 1 Scott Man ning 11000 2 Lyle Larson 11296 3 Mike Helsel 11370 4 Dave Shadel 10948 fast time 5 Henry Bartel 11300 6 Rich ard Verano 10978 7 Don McStay 12000 8 Norm Johnson 11426 9 Rick Tocci 11599 10 Mark Greer 11734 couple years ago Brian Richmond wrote article props Ive lot requests run information can apply Py lon Racers way Brian set record fast time Formula last year 1059 Over Brian Richmond asked discuss few ideas ories guesses about prdpeller technology will bore anyone complicated formulas because dont know instead will dis cuss what has worked Formula event over years First foremost must choose good piece wood define good piece wood stiff straight grain reasonably bal anced evenly pitched sounds perfect its hard find props much onehalf inch Out pitch far Out balance put balancer heavy blade hits bottom hard will dent table Trying fix requires much work sanding will weaken blade point resonance structural failure Planes dont go fast blade Tools required consist good balancer sanding block 80- 100- 220- 400-grit sand paper single-edge razor blade Prather pitch gauge borrow friend some Hot Stuff about 45 minutes cannot tell what prop begin requires experimentation part Some engines develop power torque low rpm others seem develop higher rpm Some engines will unload higher pitch propellers others wont will have deter through trial error what diameter pitch rpm range works best engine event can offer techniques clean up prop once have determined above First put prop pitch gauge Continued page 167 54 Model Aviation Radio Control Pylon Racing Bill Hager 4 Holly Springs Dr Conroe TX 77302 Jim Allen fuels up first year Formula also Quickie 500 Vp 1990 Want join NMPRA Supply Information requested check proper category membership desired Just follow directions sample form REALISTIC PILOT FIGURES Figures Available Now 1/3 Civilian S Navy /4 Civilian / ME /s Civilian AE Bust $1995 & $4 UPS $795 & $3 UPS Bust Phone 201-996-4414 ENIGh1TS CF ThI AIIINC PO Box 187 Pittatown NJ 08867 RC Scale/Crooks Continued page 163 picture ever taken Navy photograph er request very specific about aircraft picture need Preferably should request picture aircraft type serial number approximate date squadron write address will clue particulars fees Customer Services Department Defense Still Media Records Cen ter Code SSRC Washington DC 20374-1681 want model look better have better ground handling Robart has just ticket have made excellent Giant Scale re tracts shock-absorbing struts some time Now have same quality retracts shock-absorbing struts 40/120-size models set designed specifically Yellow Aircraft F-4 kit However will work Spring-Air slimline retracts Fear solution Contact Robart theyll help Out Flying Dynamax/OS ducted-fan combina tion device available will help both fuel economy aircraft performance considerably called turbine-body fairing streamlines carburetor area en gine usual unfaired installation high-speed airflow creates negative draft carburetor enclosing area streamline rear engine carb now draws least neutralif positiveair pressure aerodynamically clean model SR-71 approximately 7-mph speed increase accompa RONS MODEL Radio Controlled BIJILDINGAirplaneN Other Aircraft Boats 213451-0484 Build Fly WeU Call Write 435 San Vicente Blvd J Santa Monica CA 90402I OTBE COOL HSTAY COOL PERFECT SHADS AT THE FLYING FIELDTRACEOUT CARPING OR AT ThE LAKE OFFICIAL SHADE TENT AT 1987 RATS FOR N/C PATFERN JUDGES SHADE TENT AT 1988 RATS AT R/C PAIFERR SITES FOR OFFICIALS HEADOUARTERS TENTS AND TRANSI4ITIER IMPOONDS POkThE$AT5 500141 ---- No center pole nearly 7 tall Opaque heat reflecting canopy QIX8E2LLN0 ---- 5 Minutes 6R1R LIOlnLWGHT Weighs 6 1/2 pounds WI8D8r15TANT 6110 Tested tD 48 MPH ADJUSTABLE -- Level tilted side EXFAIIDADIE ---- Too three can joined PRICE Econoey helD$39OD $488OPS Sportesan 6e15$4395s $488UPS Dining Nob$5788s $488UPS Sporthing 9s18$8358 $558UPS Mech Tote-Tarp 4116$ 795i $288OPS Trak-Lok-Eve Kit TAA2$1008$288UPS Trak-Iok-Eye Kit TAA3$1458 $288UPS CALLLEQLL FRSZ 1-800-421-4626 4MCO ORDERI OHALERS & DISTRIR5TOR CALLSNAf 209 SW BUCY AVE Free literature availahieBARTLESVILLEOK 74083 4M CoepanyPH 918-336-9445 want Scat Cat have twisted wing dont want unevenly pitched props take single-edge razor blade scrape back prop tip hub until perfectly flat stations should take few minutes Now unless youre ready try some trick top secret stuff youre done back blades However never quit Depending rpm diameter tips blades can turning 400-500 mph Does ajet airplane uti lize flat-bottom wing does pro peller accept lot drag run fulllength flat-bottom blades could get rid drag would turn blade faster could use larger blade same rpm either way youll first down #1 pylon start back blade about station sixor one-third blade length tipand carefully work toward tip piece 100-grit black sandpaper Take little off leading edge falr amount off trail ing edge being careful touch center blade approximately 30% back lead ing edge Compare blade other care fully Semisyminetrical fine just dont go too far Doing right takes lot practice get too frustrated simply take prop break half will feel lot better Usually takes two such sac rifices before have part mastered Another trick have known try deals inner root section blade part moving through air very fast Some say root doesnt provide thrust just con nects tip hub streamlined enough make root section pull its own weight Pic ture high-speed wing slow flight leading edge devices out flaps down PORT5-10ADSandI8AXzW$yS kits use R/Vs have canopy track nied fuel savings about ounce per min ute per engine fairings bargain $9 Contact DC Aviation PO Box 98 Big Rock IL 60511 some events comlng up summer Chicago area ones Im aware sponsored Fox Valley Aero Club FVAC St Charles IL First new Scale Masters Qualifier June 23-24 Sportsman Expert Giant Scale classes Contact Contest Manager Tom Walker 1-708/584-7616 Contest Director Dennis Crooks 1-708/556-3729 Next second annual FVAC Jet Rally July 21-22 models dont have Scale Contact Contest Director Don Kanak 1-708/ 416-6940 home 1-708/834-9005 office Finally August 19 FVAC hosts gen eral alr show event welcomes models Ugly Stiks contest-ready F-14 Tomcats Contact Larry Sperling 1-708/3101222 Bob Walker 1-708/584-7616 would like participate show RC Pylon Racing/Hager Continued page 54 check stations three through about nine com pare blade other pitch dont care doesnt pitch out what advertised Its critical Remember propeller nothing rotating wing Its job move mass air rearward resulting forward thrust does airfoil lower pressure top blade pitch tries provide healthy angle attack given rpm airspeed CAT NO 106 Proof Switch Retail S995 Add $125 shipping Send $150 catalog Michigan residents add 4% sales tax IMPROVE YOUR 1991 SWITCH OVER eJj Proof Switch Positive Locking Prevents Arriving field dead batteries Accidental switching off before take-off Will vibrate apart causing loss radio Does require special mounts Works radios Ideal seaplanes completely water proof SEE YOUR LOCAL HOBBY DEALER 0 ej unavailable locally send Bru Line Industries Inc Box 3786 Center Line Ml 48015 June 1990 167 i& o 0 & 59 0c~ ENTY OF FREE PARKING MARC SHOW MID ATLANTIC RADIO CONTROL JUNE 2 AND 3 1990 Saturday 9 am 5 pm Sunday 10 am to4pm MARYLAND STATE FAIR GROUNDS TIMONIUM MARYLAND Sponsored THE RADIO CONTROL MODELERS OF BALTIMORE *PAIAONaUNOS flMOIiiuM No SALTIMOAE /S * SWAP SHOP $10 FULL TABLE PR DAY NO DEALERS PLEASE Pre-Registration CALL WAYNE MELLOR 301-788-3742 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Road Towson MD 21204 301-825-8138 STACY PASS 301-484-9139 would see some undercamber excel lent source lift thrust props slow speeds brother turned fastest mula time country last year using prop undercambered root airfoil section flatbottom midsection semisymmetrical tips want try use finger 80grit sandpaper Slowly undercamber root point about one-third way out blade deepest camber should about 30% back leading edge transition undercamber flat section semisymmetrical should very gradual Now hit ehtire back side prop first 220- 400-grit sandpaper unscrew pitch gauge block hub hard part over tops blades usually pretty good shape require minor deanup work. sharpest leading trailing edge possible re sults lowest drag component rea son full-scale propellers wings razor sharp because FOD foreign object damage Ed problems Rocks pebbles runways would damage leading edges usually dont have problem sharpen leading edge block 100-grit paper thin sharpen trailing edge top block finish up single-edge razor blade again scraping tip toward hub trailing edges stock props have very blunt edge near hub very important clean up area Now lightly block-sand entire top thai no humps pre vious steps checking prop balancer point final balancing go final step cutting prop de sired length shaping tips Theory seents lo indicate otir rpm ranges sweptback oval tips work best cut blade now de sired length slight sweepback angle 60o 700 round back front corner sandpaper block next step feel very impor tant obtainlng good tip round top blade down meet bottom using sanding block carefully preserve airfoil done correctly trailing edge corner will get paper thin Keep sanding nearly smooth out corner will now fall off result angled-back tip sweptback leading edge slightly rounded trailing edge corner Now lightly sand entire blade 400grit paper Seal Hot Stuff sand again No 400 paper Youre done Whether just use basic cleanup tech niques experiment back blades I think will see difference Now really want go fast lets start racing mula Florida again See races Thanks again Brian Richmond sharing some speed secrets us As promised list get some much-needed racing supplies Formula Kits LII ToniPrather Products 1660 Revenna Wilmington CA 90744 tel l-213/835A64 Terry Prather Denight Special Cosmic WindPauls Fly ing Stuff PO Box 121 Escondido CA 92025 tel 1-619/743-5458 Paul Steinberg ght Special Shark Estrellitd Cosmic WindCalifornia Speed Pros 32221 Alipaz #115 San Juan Capistrano CA 92675 tel 1714/661-7430 Long LAI Midget Mustang Pole Cat Ritchs Hobbies 4104 Lark Houston TX 77025 tel 1-713/661-5458 Dick Ritch ShoestringDon Rice 12055 206th Issa quah WA 90827 tel 1-206/228-4170 Shoestring Lii ToniTom Storm 1420 W 160th Seattle WA 98166 tel 1-206/246-4258 Estrellita PAl Midget MustangJerry Small 502 Cherry Southlake TX 76092 tel 1817/481-6456 Engines stock SuperTigre X- 40Ritchs Hobbies see list ing under Kits above SuperTigre X- 40Modeltronics 4305 Kelly Ft Smith AZ 72904 tel 1-501/7828506 Terry Rollins K&B 40K&B Mfg 12152 5 Woodruff Downey CA 90241 tel 1-213/803-1423 J Brodbeck Engines custom Work Custom rechrome engine accessories custom-built engines engine-rebuild specialist Boss Racing Engines 7515 Brookleaf Houston TX 77041 tel 1-713/937-0553 Dave Layman Engines modified ready-to-race SuperTigre X- 40Performance Specialties PO Box 4003 Carlsbad CA 92008 tel 1-619/ 729-1658 Dave hadel K&B 40Lee Custom Engines 7215 Foot hill Tujunga CA 71042 tel 1-213/803-1423 Clarence Lee Accessories Travel Box first-class aircrdft transport containersThe Brown Box 12083 Caminito Corriente San Diego CA 92128 tel 1-619/4875670 Chuck Brown 168 Model Aviation $3500 includes Crystals Certification Two-inch spinner nylon Racing wheels F-i accessoriesPerformance Specialties see listing under Engines modified ready-to-race above Bar-stock engine mountsPauls Flying Stuff see listing under Kits above Custom-built modelsKristopher Wilson tel1-714/731-5602 Painted PilotsK McDaniels 14601 Al kosh Jamul CA 92035 tel 1-619/698-9307 Custom-built F-isCalifornia Speed Pros see listing under Kits above Q500 Kits Thunder Q-IIPauls Flying Stuff see list ing under Formula Kits above China ClipperModel Tech available hobby stores T-TailedCalifornia Speed Pros see listing under Formula Kits above SpicklerSpickler Models available hobby stores Texas OutlawRitchs Hobbies see listing under Formula Kits above Scat CatFlite Line Models available hobby stores Yellow JacketMills Airplane Models 2868 Hambleton Riva MD 21140 tel 1-301/9563308 glass Q500Barrys Model Products 600 Vincent Mt Dora FL 32757 1-904/383-1122 Barry West Accessories Engine mount closed-in ypeFourmost Products available hobby stores Engine mountPauls Flying Stuff see list ing under Formula Kits above I4qzeelsPerformance Specialties see listing under Formula Engines modified ready-torace above Kraft wheelsCalifornia Speed Pros see list ing under Formula Kits above Prop balancerHigh Point available hobby stores Pitch gaugePrather Products see listing un der Formula Kits above Royal pro-tachometerTack R/C Box 24593 Denver CO 80224 tel1-303/757-4082 Carbon props sport props custom foam workBarrys Model Products see listing under Q500 Kits above Quarter Midget Kits Estrellita Heinkel II Spitfire Toni Fire crackerGa ger Aircraft Supply 8425 Auburn Ft Wayne IN 46825 tel1-219/489-5060 Napair HestonCalifornia Speed Pros see listing under Formula Kits above Shark Deja Vu NapairQuality Fiberglass 521 96th Blame MN 55434 tel 1-612/7802737 Bob Sealy Rivets Latsha AJ Special ME-109 Matney Models 11325 Harold Luna Pier MI 48157 tel 1-313/848-8195 Kevin Matney FolkertsJim DeYoung 16627 Dobson South Holland IL 60473 tel1-312/339-9541 P-39 P-63Greg Doe 407 Pony Smyrna TN 37167 tel 1-615/459-6845 NapairCalifornia Speed Pros see listing under Formula Kits above Pole KittyGail Jacobson 2205 Britely Terr College Park GA 30349 tel 1-404/763036 1 P-SiDuane Gall 12800 Asbury Lakewood CO 80228 tel 1-303/969-9527 Pole Cat Denight SpecialBarrys Model Products see listing under Formula Kits above have missed someone please send infor mation will update list Want join NMPRA National Miniature Pylon Racing Association Ive received lot mail asking join Ive included repro duction membership application its printed first page column month Just follow directions See next month RC Helicopters/Jolly Continued page 55 Actually step wasnt necessary prior mounting JR gyro really foolproof de sign Everything logically set up gyro di rection easily reversed rotating connector 1800 its socket JR gyro twoposition-adjustable-gain type Mine works very well said very simple unit set up next step setting up PCM 10 Helicopter First let say JR PCM 10 definitely represents state-of-the-an Heli ra dios am very impressed extreme sophis tication system same time JR has taken word quality new pinnacle sys tem came NES 4031 servos doubleball-bearing-output monsters incredibly strong tough same time have zero backlashContinued page 72 PRODUCTS FOR ThE OISCERNING MOOtLER Complete Line Exhaust Systems Pipe Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanship & Padormanc June 1990 169 - ency Conversion Special Fast Turnaround Now Available CALL Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies Word Engines Spectrum Analyzers Calibrated Test Instruments UPS US Mail Federal Send Large Self AddressedExpress Used [Envelope BrochuresMastercard Visa Accepted Large Inventory R/C Parts Crystals SUCKER-KIT$5995 Show Tell Video$3995 Add $400 shipping & handling Ml residents add 4% sales tax Send 3100 SASE br producl hit samples real wood veneer skins Product List Includes Gapless Arrow cwEShaft Hinges Carbon Tow Mylar Shut Eaiand High-Tech items aler Inquires Welcome CHECK OR MONEY ORDER TO PO Box 866 Lapeer MI 48446 313 664-3330 imposite Aircraft Eng & Supply FAX
Edition: Model Aviation - 1990/06
Page Numbers: 54, 167, 168, 169
OUR 1989 Formula racing season ended Championship race held Phoenix AZ lot us another race same place different timeFebruary 24-25would serve season opener 49 entries time Scott Manning time prove good placing 1988 Championship Race no flukehe won Congratulations Scott list top lOin 89 1 Scott Man ning 11000 2 Lyle Larson 11296 3 Mike Helsel 11370 4 Dave Shadel 10948 fast time 5 Henry Bartel 11300 6 Rich ard Verano 10978 7 Don McStay 12000 8 Norm Johnson 11426 9 Rick Tocci 11599 10 Mark Greer 11734 couple years ago Brian Richmond wrote article props Ive lot requests run information can apply Py lon Racers way Brian set record fast time Formula last year 1059 Over Brian Richmond asked discuss few ideas ories guesses about prdpeller technology will bore anyone complicated formulas because dont know instead will dis cuss what has worked Formula event over years First foremost must choose good piece wood define good piece wood stiff straight grain reasonably bal anced evenly pitched sounds perfect its hard find props much onehalf inch Out pitch far Out balance put balancer heavy blade hits bottom hard will dent table Trying fix requires much work sanding will weaken blade point resonance structural failure Planes dont go fast blade Tools required consist good balancer sanding block 80- 100- 220- 400-grit sand paper single-edge razor blade Prather pitch gauge borrow friend some Hot Stuff about 45 minutes cannot tell what prop begin requires experimentation part Some engines develop power torque low rpm others seem develop higher rpm Some engines will unload higher pitch propellers others wont will have deter through trial error what diameter pitch rpm range works best engine event can offer techniques clean up prop once have determined above First put prop pitch gauge Continued page 167 54 Model Aviation Radio Control Pylon Racing Bill Hager 4 Holly Springs Dr Conroe TX 77302 Jim Allen fuels up first year Formula also Quickie 500 Vp 1990 Want join NMPRA Supply Information requested check proper category membership desired Just follow directions sample form REALISTIC PILOT FIGURES Figures Available Now 1/3 Civilian S Navy /4 Civilian / ME /s Civilian AE Bust $1995 & $4 UPS $795 & $3 UPS Bust Phone 201-996-4414 ENIGh1TS CF ThI AIIINC PO Box 187 Pittatown NJ 08867 RC Scale/Crooks Continued page 163 picture ever taken Navy photograph er request very specific about aircraft picture need Preferably should request picture aircraft type serial number approximate date squadron write address will clue particulars fees Customer Services Department Defense Still Media Records Cen ter Code SSRC Washington DC 20374-1681 want model look better have better ground handling Robart has just ticket have made excellent Giant Scale re tracts shock-absorbing struts some time Now have same quality retracts shock-absorbing struts 40/120-size models set designed specifically Yellow Aircraft F-4 kit However will work Spring-Air slimline retracts Fear solution Contact Robart theyll help Out Flying Dynamax/OS ducted-fan combina tion device available will help both fuel economy aircraft performance considerably called turbine-body fairing streamlines carburetor area en gine usual unfaired installation high-speed airflow creates negative draft carburetor enclosing area streamline rear engine carb now draws least neutralif positiveair pressure aerodynamically clean model SR-71 approximately 7-mph speed increase accompa RONS MODEL Radio Controlled BIJILDINGAirplaneN Other Aircraft Boats 213451-0484 Build Fly WeU Call Write 435 San Vicente Blvd J Santa Monica CA 90402I OTBE COOL HSTAY COOL PERFECT SHADS AT THE FLYING FIELDTRACEOUT CARPING OR AT ThE LAKE OFFICIAL SHADE TENT AT 1987 RATS FOR N/C PATFERN JUDGES SHADE TENT AT 1988 RATS AT R/C PAIFERR SITES FOR OFFICIALS HEADOUARTERS TENTS AND TRANSI4ITIER IMPOONDS POkThE$AT5 500141 ---- No center pole nearly 7 tall Opaque heat reflecting canopy QIX8E2LLN0 ---- 5 Minutes 6R1R LIOlnLWGHT Weighs 6 1/2 pounds WI8D8r15TANT 6110 Tested tD 48 MPH ADJUSTABLE -- Level tilted side EXFAIIDADIE ---- Too three can joined PRICE Econoey helD$39OD $488OPS Sportesan 6e15$4395s $488UPS Dining Nob$5788s $488UPS Sporthing 9s18$8358 $558UPS Mech Tote-Tarp 4116$ 795i $288OPS Trak-Lok-Eve Kit TAA2$1008$288UPS Trak-Iok-Eye Kit TAA3$1458 $288UPS CALLLEQLL FRSZ 1-800-421-4626 4MCO ORDERI OHALERS & DISTRIR5TOR CALLSNAf 209 SW BUCY AVE Free literature availahieBARTLESVILLEOK 74083 4M CoepanyPH 918-336-9445 want Scat Cat have twisted wing dont want unevenly pitched props take single-edge razor blade scrape back prop tip hub until perfectly flat stations should take few minutes Now unless youre ready try some trick top secret stuff youre done back blades However never quit Depending rpm diameter tips blades can turning 400-500 mph Does ajet airplane uti lize flat-bottom wing does pro peller accept lot drag run fulllength flat-bottom blades could get rid drag would turn blade faster could use larger blade same rpm either way youll first down #1 pylon start back blade about station sixor one-third blade length tipand carefully work toward tip piece 100-grit black sandpaper Take little off leading edge falr amount off trail ing edge being careful touch center blade approximately 30% back lead ing edge Compare blade other care fully Semisyminetrical fine just dont go too far Doing right takes lot practice get too frustrated simply take prop break half will feel lot better Usually takes two such sac rifices before have part mastered Another trick have known try deals inner root section blade part moving through air very fast Some say root doesnt provide thrust just con nects tip hub streamlined enough make root section pull its own weight Pic ture high-speed wing slow flight leading edge devices out flaps down PORT5-10ADSandI8AXzW$yS kits use R/Vs have canopy track nied fuel savings about ounce per min ute per engine fairings bargain $9 Contact DC Aviation PO Box 98 Big Rock IL 60511 some events comlng up summer Chicago area ones Im aware sponsored Fox Valley Aero Club FVAC St Charles IL First new Scale Masters Qualifier June 23-24 Sportsman Expert Giant Scale classes Contact Contest Manager Tom Walker 1-708/584-7616 Contest Director Dennis Crooks 1-708/556-3729 Next second annual FVAC Jet Rally July 21-22 models dont have Scale Contact Contest Director Don Kanak 1-708/ 416-6940 home 1-708/834-9005 office Finally August 19 FVAC hosts gen eral alr show event welcomes models Ugly Stiks contest-ready F-14 Tomcats Contact Larry Sperling 1-708/3101222 Bob Walker 1-708/584-7616 would like participate show RC Pylon Racing/Hager Continued page 54 check stations three through about nine com pare blade other pitch dont care doesnt pitch out what advertised Its critical Remember propeller nothing rotating wing Its job move mass air rearward resulting forward thrust does airfoil lower pressure top blade pitch tries provide healthy angle attack given rpm airspeed CAT NO 106 Proof Switch Retail S995 Add $125 shipping Send $150 catalog Michigan residents add 4% sales tax IMPROVE YOUR 1991 SWITCH OVER eJj Proof Switch Positive Locking Prevents Arriving field dead batteries Accidental switching off before take-off Will vibrate apart causing loss radio Does require special mounts Works radios Ideal seaplanes completely water proof SEE YOUR LOCAL HOBBY DEALER 0 ej unavailable locally send Bru Line Industries Inc Box 3786 Center Line Ml 48015 June 1990 167 i& o 0 & 59 0c~ ENTY OF FREE PARKING MARC SHOW MID ATLANTIC RADIO CONTROL JUNE 2 AND 3 1990 Saturday 9 am 5 pm Sunday 10 am to4pm MARYLAND STATE FAIR GROUNDS TIMONIUM MARYLAND Sponsored THE RADIO CONTROL MODELERS OF BALTIMORE *PAIAONaUNOS flMOIiiuM No SALTIMOAE /S * SWAP SHOP $10 FULL TABLE PR DAY NO DEALERS PLEASE Pre-Registration CALL WAYNE MELLOR 301-788-3742 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Road Towson MD 21204 301-825-8138 STACY PASS 301-484-9139 would see some undercamber excel lent source lift thrust props slow speeds brother turned fastest mula time country last year using prop undercambered root airfoil section flatbottom midsection semisymmetrical tips want try use finger 80grit sandpaper Slowly undercamber root point about one-third way out blade deepest camber should about 30% back leading edge transition undercamber flat section semisymmetrical should very gradual Now hit ehtire back side prop first 220- 400-grit sandpaper unscrew pitch gauge block hub hard part over tops blades usually pretty good shape require minor deanup work. sharpest leading trailing edge possible re sults lowest drag component rea son full-scale propellers wings razor sharp because FOD foreign object damage Ed problems Rocks pebbles runways would damage leading edges usually dont have problem sharpen leading edge block 100-grit paper thin sharpen trailing edge top block finish up single-edge razor blade again scraping tip toward hub trailing edges stock props have very blunt edge near hub very important clean up area Now lightly block-sand entire top thai no humps pre vious steps checking prop balancer point final balancing go final step cutting prop de sired length shaping tips Theory seents lo indicate otir rpm ranges sweptback oval tips work best cut blade now de sired length slight sweepback angle 60o 700 round back front corner sandpaper block next step feel very impor tant obtainlng good tip round top blade down meet bottom using sanding block carefully preserve airfoil done correctly trailing edge corner will get paper thin Keep sanding nearly smooth out corner will now fall off result angled-back tip sweptback leading edge slightly rounded trailing edge corner Now lightly sand entire blade 400grit paper Seal Hot Stuff sand again No 400 paper Youre done Whether just use basic cleanup tech niques experiment back blades I think will see difference Now really want go fast lets start racing mula Florida again See races Thanks again Brian Richmond sharing some speed secrets us As promised list get some much-needed racing supplies Formula Kits LII ToniPrather Products 1660 Revenna Wilmington CA 90744 tel l-213/835A64 Terry Prather Denight Special Cosmic WindPauls Fly ing Stuff PO Box 121 Escondido CA 92025 tel 1-619/743-5458 Paul Steinberg ght Special Shark Estrellitd Cosmic WindCalifornia Speed Pros 32221 Alipaz #115 San Juan Capistrano CA 92675 tel 1714/661-7430 Long LAI Midget Mustang Pole Cat Ritchs Hobbies 4104 Lark Houston TX 77025 tel 1-713/661-5458 Dick Ritch ShoestringDon Rice 12055 206th Issa quah WA 90827 tel 1-206/228-4170 Shoestring Lii ToniTom Storm 1420 W 160th Seattle WA 98166 tel 1-206/246-4258 Estrellita PAl Midget MustangJerry Small 502 Cherry Southlake TX 76092 tel 1817/481-6456 Engines stock SuperTigre X- 40Ritchs Hobbies see list ing under Kits above SuperTigre X- 40Modeltronics 4305 Kelly Ft Smith AZ 72904 tel 1-501/7828506 Terry Rollins K&B 40K&B Mfg 12152 5 Woodruff Downey CA 90241 tel 1-213/803-1423 J Brodbeck Engines custom Work Custom rechrome engine accessories custom-built engines engine-rebuild specialist Boss Racing Engines 7515 Brookleaf Houston TX 77041 tel 1-713/937-0553 Dave Layman Engines modified ready-to-race SuperTigre X- 40Performance Specialties PO Box 4003 Carlsbad CA 92008 tel 1-619/ 729-1658 Dave hadel K&B 40Lee Custom Engines 7215 Foot hill Tujunga CA 71042 tel 1-213/803-1423 Clarence Lee Accessories Travel Box first-class aircrdft transport containersThe Brown Box 12083 Caminito Corriente San Diego CA 92128 tel 1-619/4875670 Chuck Brown 168 Model Aviation $3500 includes Crystals Certification Two-inch spinner nylon Racing wheels F-i accessoriesPerformance Specialties see listing under Engines modified ready-to-race above Bar-stock engine mountsPauls Flying Stuff see listing under Kits above Custom-built modelsKristopher Wilson tel1-714/731-5602 Painted PilotsK McDaniels 14601 Al kosh Jamul CA 92035 tel 1-619/698-9307 Custom-built F-isCalifornia Speed Pros see listing under Kits above Q500 Kits Thunder Q-IIPauls Flying Stuff see list ing under Formula Kits above China ClipperModel Tech available hobby stores T-TailedCalifornia Speed Pros see listing under Formula Kits above SpicklerSpickler Models available hobby stores Texas OutlawRitchs Hobbies see listing under Formula Kits above Scat CatFlite Line Models available hobby stores Yellow JacketMills Airplane Models 2868 Hambleton Riva MD 21140 tel 1-301/9563308 glass Q500Barrys Model Products 600 Vincent Mt Dora FL 32757 1-904/383-1122 Barry West Accessories Engine mount closed-in ypeFourmost Products available hobby stores Engine mountPauls Flying Stuff see list ing under Formula Kits above I4qzeelsPerformance Specialties see listing under Formula Engines modified ready-torace above Kraft wheelsCalifornia Speed Pros see list ing under Formula Kits above Prop balancerHigh Point available hobby stores Pitch gaugePrather Products see listing un der Formula Kits above Royal pro-tachometerTack R/C Box 24593 Denver CO 80224 tel1-303/757-4082 Carbon props sport props custom foam workBarrys Model Products see listing under Q500 Kits above Quarter Midget Kits Estrellita Heinkel II Spitfire Toni Fire crackerGa ger Aircraft Supply 8425 Auburn Ft Wayne IN 46825 tel1-219/489-5060 Napair HestonCalifornia Speed Pros see listing under Formula Kits above Shark Deja Vu NapairQuality Fiberglass 521 96th Blame MN 55434 tel 1-612/7802737 Bob Sealy Rivets Latsha AJ Special ME-109 Matney Models 11325 Harold Luna Pier MI 48157 tel 1-313/848-8195 Kevin Matney FolkertsJim DeYoung 16627 Dobson South Holland IL 60473 tel1-312/339-9541 P-39 P-63Greg Doe 407 Pony Smyrna TN 37167 tel 1-615/459-6845 NapairCalifornia Speed Pros see listing under Formula Kits above Pole KittyGail Jacobson 2205 Britely Terr College Park GA 30349 tel 1-404/763036 1 P-SiDuane Gall 12800 Asbury Lakewood CO 80228 tel 1-303/969-9527 Pole Cat Denight SpecialBarrys Model Products see listing under Formula Kits above have missed someone please send infor mation will update list Want join NMPRA National Miniature Pylon Racing Association Ive received lot mail asking join Ive included repro duction membership application its printed first page column month Just follow directions See next month RC Helicopters/Jolly Continued page 55 Actually step wasnt necessary prior mounting JR gyro really foolproof de sign Everything logically set up gyro di rection easily reversed rotating connector 1800 its socket JR gyro twoposition-adjustable-gain type Mine works very well said very simple unit set up next step setting up PCM 10 Helicopter First let say JR PCM 10 definitely represents state-of-the-an Heli ra dios am very impressed extreme sophis tication system same time JR has taken word quality new pinnacle sys tem came NES 4031 servos doubleball-bearing-output monsters incredibly strong tough same time have zero backlashContinued page 72 PRODUCTS FOR ThE OISCERNING MOOtLER Complete Line Exhaust Systems Pipe Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanship & Padormanc June 1990 169 - ency Conversion Special Fast Turnaround Now Available CALL Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies Word Engines Spectrum Analyzers Calibrated Test Instruments UPS US Mail Federal Send Large Self AddressedExpress Used [Envelope BrochuresMastercard Visa Accepted Large Inventory R/C Parts Crystals SUCKER-KIT$5995 Show Tell Video$3995 Add $400 shipping & handling Ml residents add 4% sales tax Send 3100 SASE br producl hit samples real wood veneer skins Product List Includes Gapless Arrow cwEShaft Hinges Carbon Tow Mylar Shut Eaiand High-Tech items aler Inquires Welcome CHECK OR MONEY ORDER TO PO Box 866 Lapeer MI 48446 313 664-3330 imposite Aircraft Eng & Supply FAX