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Control Line: Aerobatics

Author: F. McMillan


Edition: Model Aviation - 1997/02
Page Numbers: 129, 130

CONTROL LINE AEROBATICS OVER THE YEARS years case pick up bits technology work some dont work times approach seems surface exciting way solve problem just doesnt prove acceptable longterm solution Part equation Precision Aerobatics deal constant vibration longterm exposure heat ultraviolet rays prolonged high flight loads Faced environment need look longterm solutions engineering problems solutions last least years thousand flights philosophy simple Use what works over time evolve suits needs have approach engineering front end Randy Smith has Windy Urtnowski uses Big Jim Pattern Master style work also evolve over time Sometimes people tend reinvent problems because approach attractive its easy assume past away two areas solutions have recently proposed known fail thats what Id like address first use threaded rod adjusting device control systems availability heavy duty horns balllinks etc because larger-size RC activity builders have again looked attractiveness adjustment control system also approach using ball-links overcome perceived geometry problem control linkage Because peculiar environment recommend system uses threaded couplers flap/elevator/bellcrank system numerous examples threaded rod fatigues minor diameter causing loss good airplane dont fly lot can probably get away want ensure keeping good airplane use threaded couplersperiod second subject use aliphatic type glues attach RC hinges control surfaces glue very convenient wont jam hinges seems safe Ive lost airplane almost lost another because flap hinges loosened glue Epoxy works slow-set best have protect hinge barrels Vaseline its nice work doesnt come loose suspect February 1997 129 US gold medal winner Junior champion Derek Berry preparingDave Fitzgerald cleans up after last Finals flight David placed Finals flight Outstanding performancethird overall fine performance Paul Walker silver medal prepares Impact pits Eventual World Champs winner Han Xinping foreground Chinese World Championship team L-R Niu Anlin 12th place individual Han Xinping World Champion team anchor Wang Hong Wei fourth place aliphatic glue hardens over time after exposure heat vibration etc Again two instances personal experience Please use threaded rod aliphatic glue hinges want have airplane length time Several months ago mentioned two new engines under test evaluationthe PA 61 Jett 50 Both intended competition using tuned pipes similar concept using AAC Aluminum Aluminum Chrome cylinder piston design based 40-size origins concept being pack much displacement smallest size will work Precision Aerobatics application because engines highly stressed racing engines want controlled power lightest package So did perform Both flown known airplanes equipment big advantage because provides working environment evaluate specific performance engine actual competitionlike conditions models flown varying conditions including exceptionally good air moderate-to-severe turbulence competition Bolly pipes props use give good comparison what Ive flying precision Aero 61 10cc exactly what hoped powerful PA 51 really impressed over 96 season Thus far Ive flown 61 two airplanesan SVI2 XL Number 3 Caudron Caudron real challenge 780 square inches 62 ounces flew very well OPS 40 As might expect additional displacement showed engine turning three-blade 12 x 39 just loading hadnt flown airplane over yearthrew setup flew overwhelmed good couldnt believe pulled arm off tension smooth over airplane just went precisely pointed held lines maneuvers corners flowed effort difficult sensation describe let assure once have hands combination like changes outlook Raw power totality smoothness exceptionally steady speed up down sideways comers comers . just stays its track drives Thats package characteristics Ive discussed impressions formed airplane very good going engine gave friendly feel unsurpassed pure bolt-on power inevitable comparison comes up What about ST 60 copies does stack up have extensive experience ST 60 smaller airplanes conditions both have followers bottom line run what can make work well However preference road life PA 61 until something better comes alongand isnt exciting prospect Contract Randy Smith Aero Products 1880 Scenic Hwy Snellville GA 30278 Tel 770 979-2035 PA 61s placed first second Dallas fall contestan auspicious start next engine tested Jett 50 also AAC design based 40-size engine slightly lighter PA 51 111 ounces Since prototype some initial flights devoted finding correct head shape deck height venturi shape orifice area early test stages engine docile linear very predictable test prop 12 x 39 Bolly two-blade has become standard 50-size props overall assessment very good engine powerful flat runs like Stunt engine exhibiting very predictable characteristics varying conditions does wind up heavy wind powers through turbulence Because excellent tolerances extremely consistent flight after flight engine will available George Aldrich package deal header Contact George Aldrich Models 12822 Tarrytown San Antonio TX 78233 Tel 210 656-2021 seems month new videos being produced Robins View Productions Bob Hunt already have background new company previous columns Now another must-have video follow Precision Aerobatics know Bill Werwage superb designs has created over years has competing know still has virtually airplanes house years Ive wanted visit never opportunity Now tape Bob visits Bill discusses lineage of world-famous designs such USA-i wonderful historic entertainment hope will first interviews famous personalities will preserve non-public part event great interest portent future Nationals airplanes Bill showing new scalelike Retract P 47wow Contact Robins View Production Box 68 Stockertown PA 18085 Tel 610 7460 106 Another contributor expanding video market has certainly years Windy Urtnowskis construction videos have long source valuable information technology modeling community years production quite comprehensivemore 20 tapes dealing construction Windys award-winning Spitfire Among subjects dealt during completion project Scale paint schemes color mixing balsa shell molding glass molding elliptical wing construction wealth information presented master craftsman Windy also has superb plans accessories available Spitfire including five-bladed carbon propellers worked very well Big Jim ST 60 Nationals Contact Windy 93 Elliott P1 Rutherford NJ 07070 Tel 201 896-8740 1OZ merchandise U Free shipping orders over $100 ENo handling charge EAdvance notice sales U Savings 6uaranteedto exceed membership cost $2995 U Free CST Product 6uides Catalog Subject terms conduttons on-line Ffttp//wwwtminetcom/cst/ call Composite Structures Technology P0 Box 642 Dept JN Tehachapi CA 93581 Phone 1400-338-1278 805-822-4162 greatest seIe1mtT airplane plans late Herb cinkeys renowned flylin Order yoars today Prices include postage handling Wette toe complete list $5 vhe Monocoape$8 Beilnaca Skyrocket$10 Great Lakes Trainer $5 Rearwin Speedster $8 catliss Rabin$10 Megowconpe $5 Flyette$8 Stearttsan C3B$10 Fairchild 22 $5 Cartiss Seagnil$8 General Aristocrat$10 Backer Jnagmeisrer $5 Stiason voyager$8 Trarel Air 6000 einkel 180d55 Kinner Sporesteraaarrw $5 CG2 Funster$8 Quaker Hash U Eli U iii U U I FLYLINE MODELS Plans Division 151 T7 151 1 flthh Way Scottsdale AZ 85260 130 Model Aviation

Author: F. McMillan


Edition: Model Aviation - 1997/02
Page Numbers: 129, 130

CONTROL LINE AEROBATICS OVER THE YEARS years case pick up bits technology work some dont work times approach seems surface exciting way solve problem just doesnt prove acceptable longterm solution Part equation Precision Aerobatics deal constant vibration longterm exposure heat ultraviolet rays prolonged high flight loads Faced environment need look longterm solutions engineering problems solutions last least years thousand flights philosophy simple Use what works over time evolve suits needs have approach engineering front end Randy Smith has Windy Urtnowski uses Big Jim Pattern Master style work also evolve over time Sometimes people tend reinvent problems because approach attractive its easy assume past away two areas solutions have recently proposed known fail thats what Id like address first use threaded rod adjusting device control systems availability heavy duty horns balllinks etc because larger-size RC activity builders have again looked attractiveness adjustment control system also approach using ball-links overcome perceived geometry problem control linkage Because peculiar environment recommend system uses threaded couplers flap/elevator/bellcrank system numerous examples threaded rod fatigues minor diameter causing loss good airplane dont fly lot can probably get away want ensure keeping good airplane use threaded couplersperiod second subject use aliphatic type glues attach RC hinges control surfaces glue very convenient wont jam hinges seems safe Ive lost airplane almost lost another because flap hinges loosened glue Epoxy works slow-set best have protect hinge barrels Vaseline its nice work doesnt come loose suspect February 1997 129 US gold medal winner Junior champion Derek Berry preparingDave Fitzgerald cleans up after last Finals flight David placed Finals flight Outstanding performancethird overall fine performance Paul Walker silver medal prepares Impact pits Eventual World Champs winner Han Xinping foreground Chinese World Championship team L-R Niu Anlin 12th place individual Han Xinping World Champion team anchor Wang Hong Wei fourth place aliphatic glue hardens over time after exposure heat vibration etc Again two instances personal experience Please use threaded rod aliphatic glue hinges want have airplane length time Several months ago mentioned two new engines under test evaluationthe PA 61 Jett 50 Both intended competition using tuned pipes similar concept using AAC Aluminum Aluminum Chrome cylinder piston design based 40-size origins concept being pack much displacement smallest size will work Precision Aerobatics application because engines highly stressed racing engines want controlled power lightest package So did perform Both flown known airplanes equipment big advantage because provides working environment evaluate specific performance engine actual competitionlike conditions models flown varying conditions including exceptionally good air moderate-to-severe turbulence competition Bolly pipes props use give good comparison what Ive flying precision Aero 61 10cc exactly what hoped powerful PA 51 really impressed over 96 season Thus far Ive flown 61 two airplanesan SVI2 XL Number 3 Caudron Caudron real challenge 780 square inches 62 ounces flew very well OPS 40 As might expect additional displacement showed engine turning three-blade 12 x 39 just loading hadnt flown airplane over yearthrew setup flew overwhelmed good couldnt believe pulled arm off tension smooth over airplane just went precisely pointed held lines maneuvers corners flowed effort difficult sensation describe let assure once have hands combination like changes outlook Raw power totality smoothness exceptionally steady speed up down sideways comers comers . just stays its track drives Thats package characteristics Ive discussed impressions formed airplane very good going engine gave friendly feel unsurpassed pure bolt-on power inevitable comparison comes up What about ST 60 copies does stack up have extensive experience ST 60 smaller airplanes conditions both have followers bottom line run what can make work well However preference road life PA 61 until something better comes alongand isnt exciting prospect Contract Randy Smith Aero Products 1880 Scenic Hwy Snellville GA 30278 Tel 770 979-2035 PA 61s placed first second Dallas fall contestan auspicious start next engine tested Jett 50 also AAC design based 40-size engine slightly lighter PA 51 111 ounces Since prototype some initial flights devoted finding correct head shape deck height venturi shape orifice area early test stages engine docile linear very predictable test prop 12 x 39 Bolly two-blade has become standard 50-size props overall assessment very good engine powerful flat runs like Stunt engine exhibiting very predictable characteristics varying conditions does wind up heavy wind powers through turbulence Because excellent tolerances extremely consistent flight after flight engine will available George Aldrich package deal header Contact George Aldrich Models 12822 Tarrytown San Antonio TX 78233 Tel 210 656-2021 seems month new videos being produced Robins View Productions Bob Hunt already have background new company previous columns Now another must-have video follow Precision Aerobatics know Bill Werwage superb designs has created over years has competing know still has virtually airplanes house years Ive wanted visit never opportunity Now tape Bob visits Bill discusses lineage of world-famous designs such USA-i wonderful historic entertainment hope will first interviews famous personalities will preserve non-public part event great interest portent future Nationals airplanes Bill showing new scalelike Retract P 47wow Contact Robins View Production Box 68 Stockertown PA 18085 Tel 610 7460 106 Another contributor expanding video market has certainly years Windy Urtnowskis construction videos have long source valuable information technology modeling community years production quite comprehensivemore 20 tapes dealing construction Windys award-winning Spitfire Among subjects dealt during completion project Scale paint schemes color mixing balsa shell molding glass molding elliptical wing construction wealth information presented master craftsman Windy also has superb plans accessories available Spitfire including five-bladed carbon propellers worked very well Big Jim ST 60 Nationals Contact Windy 93 Elliott P1 Rutherford NJ 07070 Tel 201 896-8740 1OZ merchandise U Free shipping orders over $100 ENo handling charge EAdvance notice sales U Savings 6uaranteedto exceed membership cost $2995 U Free CST Product 6uides Catalog Subject terms conduttons on-line Ffttp//wwwtminetcom/cst/ call Composite Structures Technology P0 Box 642 Dept JN Tehachapi CA 93581 Phone 1400-338-1278 805-822-4162 greatest seIe1mtT airplane plans late Herb cinkeys renowned flylin Order yoars today Prices include postage handling Wette toe complete list $5 vhe Monocoape$8 Beilnaca Skyrocket$10 Great Lakes Trainer $5 Rearwin Speedster $8 catliss Rabin$10 Megowconpe $5 Flyette$8 Stearttsan C3B$10 Fairchild 22 $5 Cartiss Seagnil$8 General Aristocrat$10 Backer Jnagmeisrer $5 Stiason voyager$8 Trarel Air 6000 einkel 180d55 Kinner Sporesteraaarrw $5 CG2 Funster$8 Quaker Hash U Eli U iii U U I FLYLINE MODELS Plans Division 151 T7 151 1 flthh Way Scottsdale AZ 85260 130 Model Aviation

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