RADIO CONTROL SOARING 1994 WORLD SOARING JAMBOREE Seven Northwestern clubs have joined together announce first World Soaring Jamboree nine-day event will held Richiand Washington May 28 through Sunday June 5 thermal slope cross-country events will have divisions novice intermediate expert pilots Contests will Open Two-Meter thermal duration Hand Launch F3J F3B Slope racing will Limited Unlimited Power Scale models will fun-flying cross country racing Scale non-Scale models Also North American Scale Soaring Association tasks can flown recognized addition soaring events WSJ will feature banquet dinner special guest speaker super evening social Entrants will also have chance participate technical seminars vendor forums WSJ promises soaring enthusiasts opportunity participate RC Soaring history Expect details event draws nearer Pilots observers interested attending can obtain information WSJ committee Send large SASE World Soaring Jamboree PO Box 4267 West Richland WA 99352 Sprite 2-Meter Dodgson Designs Bob Dodgsons latest kit nifty 2-Meter model follows illustrious record KMinnow 1980 Pixy 1985 designs Well get Sprites new interesting features first specs Wingspan78 inches Wing area585 sqin Airfoil5D7037 Weight37 ounces Wing loading90 oz/sqft Aspect ratio104 1 Wing constObechi over white foam Stab & rudderBuilt-up wood & film ControlsFlapperons elevator rudder Kit price $155 plus $8 UPS shipping add $10 nose job Bob says some builders get Sprites air within two weeks receiving kit Some Sprites light 34 ounces fully painted fuselage drops wing loading ladylike 84 ounces per square foot important working small light bubbles What new different about Sprite MonoSeam fiberglass fuselage wing attachment system Bob lays up fuselage piece joins top seam down turtledeck complete tailboom section top nose section fuselage closed open like Bobs taco shell fuselages must finished balsa block glass cloth polyester resin want part completed add $10 nose job fin built-up wood glued slot tailboom unique wing mounting system works way 1 wings plug together center section via 7/n wing rod wing alignment pin Before assembly wing rod pin installed side brass fittings fit between wings slipped onto rod pin 2 wing halves held tightly together rubber band bottom band concealed inside fuselage wings place wing halves held tightly together two brass fittings attached wing rod alignment pin project down wing bottom 3 install wings onto fuselage projecting brass fittings slip brass tubes mounted vertically along centerline fuselage fitting projects down wing rod has threaded insert base 4 towhook has threaded shank extends upward through normal hole bottom fuselage screws 76 Model Aviation Hayes points thermal hes about throw Lii Bird Reasonably-priced HL kit now available Bob Dodgsons aaugnter Megan Dodgsons new Two-Meter Sprite Sprite shows distinctive Dodgson heritage Goldberg Ultimate CowiWheel Pants Wing Skinning Video Desaflo II Wing Span 685 WeIgtt 85-95 840 sc h Engine Goldberg lrtra 300 Cowl/Wheel Pants 615 455-0735 K Please send $100 Catalog 215 Big Springs Avenue ahoma TN 37388 bottom fitting connected wing rod threads tightened up turning towhook wing towhook held firmly place towhook directly connected wing rod launching loads transferred towhook wing spar save weight maximize simplicity Sprites Auto Cad-drawn plans show glider set up flapperon roll control combined flaps ailerons ie entire wing trailing edge moves piece two servos wings can also built now-standard separate flaps aileron control system four servos wings trick Sprite fiapperon configuration landing go down go up 450 Bob says negative flapperon position provides excellent glidepath control rapid altitude loss reverse aileron differential set up landing mode computer radio quite good landing directional control negative flapperon position fact little practice can just pancake Sprite onto spot instantly squats stays put tricky part negative flapperons slow down speed like positive flaps So must keep speed down final use negative flaps control glide path same spoilers big payoff Sprites flapperons need two microservos wings low-cost nylon-geared servos work great negative flapperons have common gear stripping problem common down-flap landings general feel flapperons Sprite provide lightest possible wing loading thus best potential light-lift capability slope general sport thermal flying would consider adding weight complexity separate flaps ailerons However serious contest spot landings up flapperons require learning different landing technique have used down flaps separate ailerons Instead making high final using 900 down flaps control speed make fairly steep approach spot up flapperons require low slow approach using flapperons control altitude make pancake landing flapperon system works great n flying OpenContinued page 80 January 1994 77 ExtraiiAire IIiU Wing Span 67 WeIght 95-100 Wing Span 66 WeIght 85-95 Its Wing Span 66 WeIght 85-90 f Wing Span iu- wuglt 85-95 ts Wing Area 965sq Engine 60 Wing Area 9X sq h Enw 120 Wing Area 940 sq h Ene 120 Wing Area 860 sq Engine 120 FAX 615 455-0677 Bottom view Sprites wing shows wing attachment fitting towhook screwed Sprite towhook ready screwed threaded shank transfers launch loads wing spar Lii Bird derived Dave Thornburgs classic Bird Time Colored tissue can used dress-up LDM Industries Inc THE STRONGBOX II RECEIVER AND DAITERY PACK PROTECTION SYSTEM STRONGBOX IP larger version popular STRONGBoX has specifically __ designed meet needs giant scale flyers STRONGBOX STRONGBOX II both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray induded hardware STRONGBO 24 deep 27 wIde 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fit 40 larger size models STRONGBOX II 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit moat 120 larger size models receiver battery pack mast valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Proted valuables STRONGBOXPart #8100 STRONGBOX 11 $1195 U IndustrIes Bali Bearing Servo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost 1 ball bearing servo can upgrade 4 standard servos following three conversion kits fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus C528 C5128 C5238 & C5248 servos Kit #96004 padc..$2995 Kit #96101 pack..$795 Alrtronlcs 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..$795 JR 501 & 507 Focus H5300 RCL 05 Tower TS-51 Hobbico CS-51 Ace 330 servos Kit #98004 pack ..S2095 Kit #98101 pack..$595 NO-HEAT Tiimi SOLVENT Eliminate wobble output shaft Reduce control response deadband Reduce chance flutter Improve control surface centering Allow use pull-pull cables order send check money order Including $300 S&H LDM Industries Inc PO Box 292396 Dept 140 Tampa FL 33687-2396 Phone/Fax 813 985-5616 Fkalda residents add 6 1/2% sales tax VISA MASTER CARD Accepted Dealer InquIries Welcome C 1993 LDM Industries inc B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field RO Soaring/Blakeslee Continued page 77 Class glider separate flaps ailerons may have trouble bouncing back forth between two different landing techniques case separate flaps ailerons may better choice other hand Sprite primary contest glider flapperons good way go yield good landing potential together better light lift performance Sprite kits available direct purchase Dodgson Designs 21230 Damson Road Bothell WA 98021 Tel 206 776-8067 Bobs 1994 kit line includes 132-inch Anthem 121-inch Saber 78-inch Sprite 60-72-inch Pivot Pixy Camano Lovesong kits discontinued 1993 Standard-class replacement Camano will available soon Bob publishes own biannual newsletter Second Wind Copies $1 US $150 Canada $3 internationally Lii Bird Hand Launch Sky-Bench Aerotech Ray Hayes long-time RC soaring pilot former vice-president League Silent Flight has started own cottage industry kit business Rays first offering hand launch glider based Dave Thornburgs classic Bird Time its 9%-thick airfoil Ray says Lil Bird floats penetrates launches extremely well also suited slope flying launching via mini hi-start span 5425 inches area 270 square inches length 29 inches flying weight 12 ounces kit contains plans building instructions machine-cut balsa plywood full hardware Lil Bird features bolt-on one-piece built-up wing using 1A2 contest-grade balsa full precut sheeting top bottom leading edge spruce durability Tail surfaces solid laminated balsa balsa/plywood fuselage can hold large battery pack full-size receiver According Ray have weekend free interruptions can start Lil Continued page 88 AUCTION Tn Cnunty H/C Club 3rd Annual Aurolon & Swap Meet Jan 0 1994 Hartoon Central Schoni 21st Wesrarn Harmon IL Venders Welcome Donrs upen 900 am Auctinn Starts 1200 pm Fnr Info ronuarm Brad Gillespie 217-2343516 Jim Hudson 217-2350609 80 Model Aviation 4Internal Cut-away STRONGBOXTM LDM Industries B Servo Conversion Kits wlh Takes Hessle Oat Mosokote Trim Worki Bonds Monokote over Monokote heat Eliminatea ugly bubbles wrinkles Completely fuel-pmof easy use Will cause colors bleed Allowa time position trim pieces Also works wIth Ultracote Oracover Part #95004 oz Bottle$695 NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# 6 Buffered Y harness 7354# LiZ1 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiJII 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part # followed Airt J Fut S HitecIRCD & JR - ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hitec RCD 10729 Wheatlands Ave #C Santee CA 9207 1-2883 619 258-4940 RC SoaringlBlakeslee Continued page 80 Bird Friday evening fly Sunday afternoon Lil Bird kit $2995 plus $6 shipping direct Sky-Bench Aerotech 69598 Brookhill Drive Romeo MI 48065 Color trimming can accomplished lightweight tissue Order option $495 receive top-surface sunburst trim plus solid covering bottom Application instructions included Color choices red orange blue yellow black youre real hurry Lil Bird completely jig-built copies available Ray $78 plus $15 continental USA shipping Two new books published B2 Streamlines will interest sailplane enthusiasts press releases Wing. book Bill & Bunny Kuhlman Wingafter four years remains monthly column appearing modeling press deals specifically tailless soarers Wing. book collection first 52 articles columns have appeared RC Soaring Digest 1988 through 1992 information diagrams airfoil coordinates computer programs original articles columns included along additional material previously published 250 pages illustrated US $28 Structural Dimensioning Radio guided Aeromodels Dr Ing Ferdinando Gale Anyone building RC aircraft needs read book Beginning description balsas characteristics Dr Ing Gale describes materials methods building model aircraft structures withstand stress intense flight Such structures need heavy difficult build sticks sheets foam fiberglass Dr Gale explains Some simple math skills required numerous examples assist understanding 105 pages illustrated US $18 Both books 85 x 11 inches softbound Prices include packaging postage US Canada Mexico Add $10 up three books sent airmail Europe $15 Asia Africa Pacific Rim countries Address B2 Streamlines PO Box 976 Olalla WA 98359-0976 Bob Holman has Scale Plans sailplanes have recently appeared British model magazines construction articles Slingsby Skylark Minimoa Slingsby T22 Prefect Slingsby Swallow Horten Fauvel AV 36 Futar R22 Rheinland Letov LF 107 Lunak SCALE SPAN FUNCTIONS 15143 in4 156t20in2 143150 in4 15103 in4 111131 in3 135145 in4 1376165 in4 15125 in4 154 Plans priced about $12 $27 some original magazine construction documentation copies available complete catalog $3 scale glider plans updates send large SASE Bob Holman Plans PO Box 741 San Bernardino CA 92402 Airfoil Plot Program updates Chuck Anderson Version 60 Sailplane Airfoil Plot program has available sailplane airfoils loaded Eppler Selig NACA RG Misc subdirectories New features include screen graphics new foam-core template option convert airfoil coordinates X-Y format importing CAD programs plot washout set ribs plotted program also completely rewritten Visual Basic DOS allows much-improved airfoil file selection should allow relatively easy conversion Visual Basic provide version Windows major addition program ability plot templates use automatic foam-core machines such Feather Cut system TECQA program plots two templates same time no leading edge width specified no lead-in ramps plotted two templates identical leading edge width specified leadin line tangent rib surface leading edge plotted lower template becomes bottom-surface template upper template becomes top-surface template slope lead-in lines over 450 lead-in line plotted horizontally height rib leading edge Lead-out lines plotted slope camber line trailing edge Three index marks plotted templates two ribs selected template model also calculates pulley setting Feather Cut machine Earlier programs have proven very slow using LaserJet printers math coprocessors program has compiled using Microsofts alternate math speed up plotting about factor four running computer math coprocessor no change speed computers math coprocessors Sailplane Airfoil Plot program 140 airfoils $60 previous 50 version Continued page 91 88 Model Aviation oaring/Blakeslee Continued page 88 42 airfoils also available $35 Chuck near release new Model Design 40 program 140 airfoils will $75 Upgrades Airfoil Plot 50 Model Design 30 $15 earlier versions $25 Contact Chuck PO Box 305 Tullahoma TN 37388 Tel 615 455-6430 Landing Points Controversy Beginning first Soaring contests has considerable debate over much landings should count Some say spot landing bonus 10 25 percent maximum flight score about right Others advocate no landing bonus contending RC Soaring boils down landing contests soaring competitions should won air ground Advocates landing bonus maintain landing glider consistently well essential flying skill should rewarded also point out top pilots get flight times landing points another means determine placings As mentioned previously re Sharks Teeth think its appropriate use column air important Soaring issues Therefore am pleased print following letter Ray Hayes sent Lil Bird information will happy print letters expressing other views After 23 years participating aspects RC Soaring still find exciting challenging highly pleasurable During time have competed soaring contests both coasts Canada Florida experiences range starting Soaring club being contest director contests participating F3B Finals Dan Prusss old Soar Nats Lately some competitors have talking about de-emphasizing completely eliminating landing bonus points duration tasks am opposed because accept challenge present AMA landing rules give us view little challenge landing sailplane precise time relatively small target included Recently participated contest required landing within field boundaries No landing tape no landing points unpracticed contestants thought real chance win Did thing different lost fewer points point consistently good landing scores requires disciplined practice program Landing points should diminished accommodate want practice Anyone objects landing equivalent LSF Level 2 [within 15 meters spot missing object contest ie total test flying skills believe RC Soaring art form proportionate individual flying skill Mastering art thermal flying also mastering landings inconceivable So say shouldnt deemphasize landings Jim White 1929-1993 much sadness learned passing Jim White last August White Company Jim wife Jane made full line quality parachutes winch hi-start use Whites moved California Washington state upon retirement several years ago Jim avid contest-goer mostly enjoyment mixing guys Jane will continue White Companys production chutes address 280 Spring View Place Sequim WA 98382 Silent Order Aeromodeling Radio SOAR Clubs Great Race 1994 X-C race cancelled last year because SOAR lost old field Central Sod Farm Naperville site year dont have dates Contact Ron Kukral 210 5 Prairie New Lenox IL 60451 information ary 1994 91 somethiug y774I COMPLETE FOAM WING KIT IEEXTTLU -BALSA AND FOAM CONSTRUCf ION INCLUDES FOAM COIlES SPARS CENT.SHEETING AND PLANSGOR&S ONLY S2495 $4495 NIlESend 51 tot complete c2ralogInclude $5 per order shipping/handling COB EHOUSE W 19 S1 POD 472 RCM DEPT #12 HiggInavIlle MO 640370472 8003227121
Edition: Model Aviation - 1994/01
Page Numbers: 76, 77, 80, 88, 91
RADIO CONTROL SOARING 1994 WORLD SOARING JAMBOREE Seven Northwestern clubs have joined together announce first World Soaring Jamboree nine-day event will held Richiand Washington May 28 through Sunday June 5 thermal slope cross-country events will have divisions novice intermediate expert pilots Contests will Open Two-Meter thermal duration Hand Launch F3J F3B Slope racing will Limited Unlimited Power Scale models will fun-flying cross country racing Scale non-Scale models Also North American Scale Soaring Association tasks can flown recognized addition soaring events WSJ will feature banquet dinner special guest speaker super evening social Entrants will also have chance participate technical seminars vendor forums WSJ promises soaring enthusiasts opportunity participate RC Soaring history Expect details event draws nearer Pilots observers interested attending can obtain information WSJ committee Send large SASE World Soaring Jamboree PO Box 4267 West Richland WA 99352 Sprite 2-Meter Dodgson Designs Bob Dodgsons latest kit nifty 2-Meter model follows illustrious record KMinnow 1980 Pixy 1985 designs Well get Sprites new interesting features first specs Wingspan78 inches Wing area585 sqin Airfoil5D7037 Weight37 ounces Wing loading90 oz/sqft Aspect ratio104 1 Wing constObechi over white foam Stab & rudderBuilt-up wood & film ControlsFlapperons elevator rudder Kit price $155 plus $8 UPS shipping add $10 nose job Bob says some builders get Sprites air within two weeks receiving kit Some Sprites light 34 ounces fully painted fuselage drops wing loading ladylike 84 ounces per square foot important working small light bubbles What new different about Sprite MonoSeam fiberglass fuselage wing attachment system Bob lays up fuselage piece joins top seam down turtledeck complete tailboom section top nose section fuselage closed open like Bobs taco shell fuselages must finished balsa block glass cloth polyester resin want part completed add $10 nose job fin built-up wood glued slot tailboom unique wing mounting system works way 1 wings plug together center section via 7/n wing rod wing alignment pin Before assembly wing rod pin installed side brass fittings fit between wings slipped onto rod pin 2 wing halves held tightly together rubber band bottom band concealed inside fuselage wings place wing halves held tightly together two brass fittings attached wing rod alignment pin project down wing bottom 3 install wings onto fuselage projecting brass fittings slip brass tubes mounted vertically along centerline fuselage fitting projects down wing rod has threaded insert base 4 towhook has threaded shank extends upward through normal hole bottom fuselage screws 76 Model Aviation Hayes points thermal hes about throw Lii Bird Reasonably-priced HL kit now available Bob Dodgsons aaugnter Megan Dodgsons new Two-Meter Sprite Sprite shows distinctive Dodgson heritage Goldberg Ultimate CowiWheel Pants Wing Skinning Video Desaflo II Wing Span 685 WeIgtt 85-95 840 sc h Engine Goldberg lrtra 300 Cowl/Wheel Pants 615 455-0735 K Please send $100 Catalog 215 Big Springs Avenue ahoma TN 37388 bottom fitting connected wing rod threads tightened up turning towhook wing towhook held firmly place towhook directly connected wing rod launching loads transferred towhook wing spar save weight maximize simplicity Sprites Auto Cad-drawn plans show glider set up flapperon roll control combined flaps ailerons ie entire wing trailing edge moves piece two servos wings can also built now-standard separate flaps aileron control system four servos wings trick Sprite fiapperon configuration landing go down go up 450 Bob says negative flapperon position provides excellent glidepath control rapid altitude loss reverse aileron differential set up landing mode computer radio quite good landing directional control negative flapperon position fact little practice can just pancake Sprite onto spot instantly squats stays put tricky part negative flapperons slow down speed like positive flaps So must keep speed down final use negative flaps control glide path same spoilers big payoff Sprites flapperons need two microservos wings low-cost nylon-geared servos work great negative flapperons have common gear stripping problem common down-flap landings general feel flapperons Sprite provide lightest possible wing loading thus best potential light-lift capability slope general sport thermal flying would consider adding weight complexity separate flaps ailerons However serious contest spot landings up flapperons require learning different landing technique have used down flaps separate ailerons Instead making high final using 900 down flaps control speed make fairly steep approach spot up flapperons require low slow approach using flapperons control altitude make pancake landing flapperon system works great n flying OpenContinued page 80 January 1994 77 ExtraiiAire IIiU Wing Span 67 WeIght 95-100 Wing Span 66 WeIght 85-95 Its Wing Span 66 WeIght 85-90 f Wing Span iu- wuglt 85-95 ts Wing Area 965sq Engine 60 Wing Area 9X sq h Enw 120 Wing Area 940 sq h Ene 120 Wing Area 860 sq Engine 120 FAX 615 455-0677 Bottom view Sprites wing shows wing attachment fitting towhook screwed Sprite towhook ready screwed threaded shank transfers launch loads wing spar Lii Bird derived Dave Thornburgs classic Bird Time Colored tissue can used dress-up LDM Industries Inc THE STRONGBOX II RECEIVER AND DAITERY PACK PROTECTION SYSTEM STRONGBOX IP larger version popular STRONGBoX has specifically __ designed meet needs giant scale flyers STRONGBOX STRONGBOX II both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray induded hardware STRONGBO 24 deep 27 wIde 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fit 40 larger size models STRONGBOX II 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit moat 120 larger size models receiver battery pack mast valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Proted valuables STRONGBOXPart #8100 STRONGBOX 11 $1195 U IndustrIes Bali Bearing Servo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost 1 ball bearing servo can upgrade 4 standard servos following three conversion kits fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus C528 C5128 C5238 & C5248 servos Kit #96004 padc..$2995 Kit #96101 pack..$795 Alrtronlcs 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..$795 JR 501 & 507 Focus H5300 RCL 05 Tower TS-51 Hobbico CS-51 Ace 330 servos Kit #98004 pack ..S2095 Kit #98101 pack..$595 NO-HEAT Tiimi SOLVENT Eliminate wobble output shaft Reduce control response deadband Reduce chance flutter Improve control surface centering Allow use pull-pull cables order send check money order Including $300 S&H LDM Industries Inc PO Box 292396 Dept 140 Tampa FL 33687-2396 Phone/Fax 813 985-5616 Fkalda residents add 6 1/2% sales tax VISA MASTER CARD Accepted Dealer InquIries Welcome C 1993 LDM Industries inc B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field RO Soaring/Blakeslee Continued page 77 Class glider separate flaps ailerons may have trouble bouncing back forth between two different landing techniques case separate flaps ailerons may better choice other hand Sprite primary contest glider flapperons good way go yield good landing potential together better light lift performance Sprite kits available direct purchase Dodgson Designs 21230 Damson Road Bothell WA 98021 Tel 206 776-8067 Bobs 1994 kit line includes 132-inch Anthem 121-inch Saber 78-inch Sprite 60-72-inch Pivot Pixy Camano Lovesong kits discontinued 1993 Standard-class replacement Camano will available soon Bob publishes own biannual newsletter Second Wind Copies $1 US $150 Canada $3 internationally Lii Bird Hand Launch Sky-Bench Aerotech Ray Hayes long-time RC soaring pilot former vice-president League Silent Flight has started own cottage industry kit business Rays first offering hand launch glider based Dave Thornburgs classic Bird Time its 9%-thick airfoil Ray says Lil Bird floats penetrates launches extremely well also suited slope flying launching via mini hi-start span 5425 inches area 270 square inches length 29 inches flying weight 12 ounces kit contains plans building instructions machine-cut balsa plywood full hardware Lil Bird features bolt-on one-piece built-up wing using 1A2 contest-grade balsa full precut sheeting top bottom leading edge spruce durability Tail surfaces solid laminated balsa balsa/plywood fuselage can hold large battery pack full-size receiver According Ray have weekend free interruptions can start Lil Continued page 88 AUCTION Tn Cnunty H/C Club 3rd Annual Aurolon & Swap Meet Jan 0 1994 Hartoon Central Schoni 21st Wesrarn Harmon IL Venders Welcome Donrs upen 900 am Auctinn Starts 1200 pm Fnr Info ronuarm Brad Gillespie 217-2343516 Jim Hudson 217-2350609 80 Model Aviation 4Internal Cut-away STRONGBOXTM LDM Industries B Servo Conversion Kits wlh Takes Hessle Oat Mosokote Trim Worki Bonds Monokote over Monokote heat Eliminatea ugly bubbles wrinkles Completely fuel-pmof easy use Will cause colors bleed Allowa time position trim pieces Also works wIth Ultracote Oracover Part #95004 oz Bottle$695 NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# 6 Buffered Y harness 7354# LiZ1 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiJII 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part # followed Airt J Fut S HitecIRCD & JR - ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hitec RCD 10729 Wheatlands Ave #C Santee CA 9207 1-2883 619 258-4940 RC SoaringlBlakeslee Continued page 80 Bird Friday evening fly Sunday afternoon Lil Bird kit $2995 plus $6 shipping direct Sky-Bench Aerotech 69598 Brookhill Drive Romeo MI 48065 Color trimming can accomplished lightweight tissue Order option $495 receive top-surface sunburst trim plus solid covering bottom Application instructions included Color choices red orange blue yellow black youre real hurry Lil Bird completely jig-built copies available Ray $78 plus $15 continental USA shipping Two new books published B2 Streamlines will interest sailplane enthusiasts press releases Wing. book Bill & Bunny Kuhlman Wingafter four years remains monthly column appearing modeling press deals specifically tailless soarers Wing. book collection first 52 articles columns have appeared RC Soaring Digest 1988 through 1992 information diagrams airfoil coordinates computer programs original articles columns included along additional material previously published 250 pages illustrated US $28 Structural Dimensioning Radio guided Aeromodels Dr Ing Ferdinando Gale Anyone building RC aircraft needs read book Beginning description balsas characteristics Dr Ing Gale describes materials methods building model aircraft structures withstand stress intense flight Such structures need heavy difficult build sticks sheets foam fiberglass Dr Gale explains Some simple math skills required numerous examples assist understanding 105 pages illustrated US $18 Both books 85 x 11 inches softbound Prices include packaging postage US Canada Mexico Add $10 up three books sent airmail Europe $15 Asia Africa Pacific Rim countries Address B2 Streamlines PO Box 976 Olalla WA 98359-0976 Bob Holman has Scale Plans sailplanes have recently appeared British model magazines construction articles Slingsby Skylark Minimoa Slingsby T22 Prefect Slingsby Swallow Horten Fauvel AV 36 Futar R22 Rheinland Letov LF 107 Lunak SCALE SPAN FUNCTIONS 15143 in4 156t20in2 143150 in4 15103 in4 111131 in3 135145 in4 1376165 in4 15125 in4 154 Plans priced about $12 $27 some original magazine construction documentation copies available complete catalog $3 scale glider plans updates send large SASE Bob Holman Plans PO Box 741 San Bernardino CA 92402 Airfoil Plot Program updates Chuck Anderson Version 60 Sailplane Airfoil Plot program has available sailplane airfoils loaded Eppler Selig NACA RG Misc subdirectories New features include screen graphics new foam-core template option convert airfoil coordinates X-Y format importing CAD programs plot washout set ribs plotted program also completely rewritten Visual Basic DOS allows much-improved airfoil file selection should allow relatively easy conversion Visual Basic provide version Windows major addition program ability plot templates use automatic foam-core machines such Feather Cut system TECQA program plots two templates same time no leading edge width specified no lead-in ramps plotted two templates identical leading edge width specified leadin line tangent rib surface leading edge plotted lower template becomes bottom-surface template upper template becomes top-surface template slope lead-in lines over 450 lead-in line plotted horizontally height rib leading edge Lead-out lines plotted slope camber line trailing edge Three index marks plotted templates two ribs selected template model also calculates pulley setting Feather Cut machine Earlier programs have proven very slow using LaserJet printers math coprocessors program has compiled using Microsofts alternate math speed up plotting about factor four running computer math coprocessor no change speed computers math coprocessors Sailplane Airfoil Plot program 140 airfoils $60 previous 50 version Continued page 91 88 Model Aviation oaring/Blakeslee Continued page 88 42 airfoils also available $35 Chuck near release new Model Design 40 program 140 airfoils will $75 Upgrades Airfoil Plot 50 Model Design 30 $15 earlier versions $25 Contact Chuck PO Box 305 Tullahoma TN 37388 Tel 615 455-6430 Landing Points Controversy Beginning first Soaring contests has considerable debate over much landings should count Some say spot landing bonus 10 25 percent maximum flight score about right Others advocate no landing bonus contending RC Soaring boils down landing contests soaring competitions should won air ground Advocates landing bonus maintain landing glider consistently well essential flying skill should rewarded also point out top pilots get flight times landing points another means determine placings As mentioned previously re Sharks Teeth think its appropriate use column air important Soaring issues Therefore am pleased print following letter Ray Hayes sent Lil Bird information will happy print letters expressing other views After 23 years participating aspects RC Soaring still find exciting challenging highly pleasurable During time have competed soaring contests both coasts Canada Florida experiences range starting Soaring club being contest director contests participating F3B Finals Dan Prusss old Soar Nats Lately some competitors have talking about de-emphasizing completely eliminating landing bonus points duration tasks am opposed because accept challenge present AMA landing rules give us view little challenge landing sailplane precise time relatively small target included Recently participated contest required landing within field boundaries No landing tape no landing points unpracticed contestants thought real chance win Did thing different lost fewer points point consistently good landing scores requires disciplined practice program Landing points should diminished accommodate want practice Anyone objects landing equivalent LSF Level 2 [within 15 meters spot missing object contest ie total test flying skills believe RC Soaring art form proportionate individual flying skill Mastering art thermal flying also mastering landings inconceivable So say shouldnt deemphasize landings Jim White 1929-1993 much sadness learned passing Jim White last August White Company Jim wife Jane made full line quality parachutes winch hi-start use Whites moved California Washington state upon retirement several years ago Jim avid contest-goer mostly enjoyment mixing guys Jane will continue White Companys production chutes address 280 Spring View Place Sequim WA 98382 Silent Order Aeromodeling Radio SOAR Clubs Great Race 1994 X-C race cancelled last year because SOAR lost old field Central Sod Farm Naperville site year dont have dates Contact Ron Kukral 210 5 Prairie New Lenox IL 60451 information ary 1994 91 somethiug y774I COMPLETE FOAM WING KIT IEEXTTLU -BALSA AND FOAM CONSTRUCf ION INCLUDES FOAM COIlES SPARS CENT.SHEETING AND PLANSGOR&S ONLY S2495 $4495 NIlESend 51 tot complete c2ralogInclude $5 per order shipping/handling COB EHOUSE W 19 S1 POD 472 RCM DEPT #12 HiggInavIlle MO 640370472 8003227121
Edition: Model Aviation - 1994/01
Page Numbers: 76, 77, 80, 88, 91
RADIO CONTROL SOARING 1994 WORLD SOARING JAMBOREE Seven Northwestern clubs have joined together announce first World Soaring Jamboree nine-day event will held Richiand Washington May 28 through Sunday June 5 thermal slope cross-country events will have divisions novice intermediate expert pilots Contests will Open Two-Meter thermal duration Hand Launch F3J F3B Slope racing will Limited Unlimited Power Scale models will fun-flying cross country racing Scale non-Scale models Also North American Scale Soaring Association tasks can flown recognized addition soaring events WSJ will feature banquet dinner special guest speaker super evening social Entrants will also have chance participate technical seminars vendor forums WSJ promises soaring enthusiasts opportunity participate RC Soaring history Expect details event draws nearer Pilots observers interested attending can obtain information WSJ committee Send large SASE World Soaring Jamboree PO Box 4267 West Richland WA 99352 Sprite 2-Meter Dodgson Designs Bob Dodgsons latest kit nifty 2-Meter model follows illustrious record KMinnow 1980 Pixy 1985 designs Well get Sprites new interesting features first specs Wingspan78 inches Wing area585 sqin Airfoil5D7037 Weight37 ounces Wing loading90 oz/sqft Aspect ratio104 1 Wing constObechi over white foam Stab & rudderBuilt-up wood & film ControlsFlapperons elevator rudder Kit price $155 plus $8 UPS shipping add $10 nose job Bob says some builders get Sprites air within two weeks receiving kit Some Sprites light 34 ounces fully painted fuselage drops wing loading ladylike 84 ounces per square foot important working small light bubbles What new different about Sprite MonoSeam fiberglass fuselage wing attachment system Bob lays up fuselage piece joins top seam down turtledeck complete tailboom section top nose section fuselage closed open like Bobs taco shell fuselages must finished balsa block glass cloth polyester resin want part completed add $10 nose job fin built-up wood glued slot tailboom unique wing mounting system works way 1 wings plug together center section via 7/n wing rod wing alignment pin Before assembly wing rod pin installed side brass fittings fit between wings slipped onto rod pin 2 wing halves held tightly together rubber band bottom band concealed inside fuselage wings place wing halves held tightly together two brass fittings attached wing rod alignment pin project down wing bottom 3 install wings onto fuselage projecting brass fittings slip brass tubes mounted vertically along centerline fuselage fitting projects down wing rod has threaded insert base 4 towhook has threaded shank extends upward through normal hole bottom fuselage screws 76 Model Aviation Hayes points thermal hes about throw Lii Bird Reasonably-priced HL kit now available Bob Dodgsons aaugnter Megan Dodgsons new Two-Meter Sprite Sprite shows distinctive Dodgson heritage Goldberg Ultimate CowiWheel Pants Wing Skinning Video Desaflo II Wing Span 685 WeIgtt 85-95 840 sc h Engine Goldberg lrtra 300 Cowl/Wheel Pants 615 455-0735 K Please send $100 Catalog 215 Big Springs Avenue ahoma TN 37388 bottom fitting connected wing rod threads tightened up turning towhook wing towhook held firmly place towhook directly connected wing rod launching loads transferred towhook wing spar save weight maximize simplicity Sprites Auto Cad-drawn plans show glider set up flapperon roll control combined flaps ailerons ie entire wing trailing edge moves piece two servos wings can also built now-standard separate flaps aileron control system four servos wings trick Sprite fiapperon configuration landing go down go up 450 Bob says negative flapperon position provides excellent glidepath control rapid altitude loss reverse aileron differential set up landing mode computer radio quite good landing directional control negative flapperon position fact little practice can just pancake Sprite onto spot instantly squats stays put tricky part negative flapperons slow down speed like positive flaps So must keep speed down final use negative flaps control glide path same spoilers big payoff Sprites flapperons need two microservos wings low-cost nylon-geared servos work great negative flapperons have common gear stripping problem common down-flap landings general feel flapperons Sprite provide lightest possible wing loading thus best potential light-lift capability slope general sport thermal flying would consider adding weight complexity separate flaps ailerons However serious contest spot landings up flapperons require learning different landing technique have used down flaps separate ailerons Instead making high final using 900 down flaps control speed make fairly steep approach spot up flapperons require low slow approach using flapperons control altitude make pancake landing flapperon system works great n flying OpenContinued page 80 January 1994 77 ExtraiiAire IIiU Wing Span 67 WeIght 95-100 Wing Span 66 WeIght 85-95 Its Wing Span 66 WeIght 85-90 f Wing Span iu- wuglt 85-95 ts Wing Area 965sq Engine 60 Wing Area 9X sq h Enw 120 Wing Area 940 sq h Ene 120 Wing Area 860 sq Engine 120 FAX 615 455-0677 Bottom view Sprites wing shows wing attachment fitting towhook screwed Sprite towhook ready screwed threaded shank transfers launch loads wing spar Lii Bird derived Dave Thornburgs classic Bird Time Colored tissue can used dress-up LDM Industries Inc THE STRONGBOX II RECEIVER AND DAITERY PACK PROTECTION SYSTEM STRONGBOX IP larger version popular STRONGBoX has specifically __ designed meet needs giant scale flyers STRONGBOX STRONGBOX II both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray induded hardware STRONGBO 24 deep 27 wIde 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fit 40 larger size models STRONGBOX II 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit moat 120 larger size models receiver battery pack mast valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Proted valuables STRONGBOXPart #8100 STRONGBOX 11 $1195 U IndustrIes Bali Bearing Servo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost 1 ball bearing servo can upgrade 4 standard servos following three conversion kits fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus C528 C5128 C5238 & C5248 servos Kit #96004 padc..$2995 Kit #96101 pack..$795 Alrtronlcs 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..$795 JR 501 & 507 Focus H5300 RCL 05 Tower TS-51 Hobbico CS-51 Ace 330 servos Kit #98004 pack ..S2095 Kit #98101 pack..$595 NO-HEAT Tiimi SOLVENT Eliminate wobble output shaft Reduce control response deadband Reduce chance flutter Improve control surface centering Allow use pull-pull cables order send check money order Including $300 S&H LDM Industries Inc PO Box 292396 Dept 140 Tampa FL 33687-2396 Phone/Fax 813 985-5616 Fkalda residents add 6 1/2% sales tax VISA MASTER CARD Accepted Dealer InquIries Welcome C 1993 LDM Industries inc B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field RO Soaring/Blakeslee Continued page 77 Class glider separate flaps ailerons may have trouble bouncing back forth between two different landing techniques case separate flaps ailerons may better choice other hand Sprite primary contest glider flapperons good way go yield good landing potential together better light lift performance Sprite kits available direct purchase Dodgson Designs 21230 Damson Road Bothell WA 98021 Tel 206 776-8067 Bobs 1994 kit line includes 132-inch Anthem 121-inch Saber 78-inch Sprite 60-72-inch Pivot Pixy Camano Lovesong kits discontinued 1993 Standard-class replacement Camano will available soon Bob publishes own biannual newsletter Second Wind Copies $1 US $150 Canada $3 internationally Lii Bird Hand Launch Sky-Bench Aerotech Ray Hayes long-time RC soaring pilot former vice-president League Silent Flight has started own cottage industry kit business Rays first offering hand launch glider based Dave Thornburgs classic Bird Time its 9%-thick airfoil Ray says Lil Bird floats penetrates launches extremely well also suited slope flying launching via mini hi-start span 5425 inches area 270 square inches length 29 inches flying weight 12 ounces kit contains plans building instructions machine-cut balsa plywood full hardware Lil Bird features bolt-on one-piece built-up wing using 1A2 contest-grade balsa full precut sheeting top bottom leading edge spruce durability Tail surfaces solid laminated balsa balsa/plywood fuselage can hold large battery pack full-size receiver According Ray have weekend free interruptions can start Lil Continued page 88 AUCTION Tn Cnunty H/C Club 3rd Annual Aurolon & Swap Meet Jan 0 1994 Hartoon Central Schoni 21st Wesrarn Harmon IL Venders Welcome Donrs upen 900 am Auctinn Starts 1200 pm Fnr Info ronuarm Brad Gillespie 217-2343516 Jim Hudson 217-2350609 80 Model Aviation 4Internal Cut-away STRONGBOXTM LDM Industries B Servo Conversion Kits wlh Takes Hessle Oat Mosokote Trim Worki Bonds Monokote over Monokote heat Eliminatea ugly bubbles wrinkles Completely fuel-pmof easy use Will cause colors bleed Allowa time position trim pieces Also works wIth Ultracote Oracover Part #95004 oz Bottle$695 NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# 6 Buffered Y harness 7354# LiZ1 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiJII 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part # followed Airt J Fut S HitecIRCD & JR - ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hitec RCD 10729 Wheatlands Ave #C Santee CA 9207 1-2883 619 258-4940 RC SoaringlBlakeslee Continued page 80 Bird Friday evening fly Sunday afternoon Lil Bird kit $2995 plus $6 shipping direct Sky-Bench Aerotech 69598 Brookhill Drive Romeo MI 48065 Color trimming can accomplished lightweight tissue Order option $495 receive top-surface sunburst trim plus solid covering bottom Application instructions included Color choices red orange blue yellow black youre real hurry Lil Bird completely jig-built copies available Ray $78 plus $15 continental USA shipping Two new books published B2 Streamlines will interest sailplane enthusiasts press releases Wing. book Bill & Bunny Kuhlman Wingafter four years remains monthly column appearing modeling press deals specifically tailless soarers Wing. book collection first 52 articles columns have appeared RC Soaring Digest 1988 through 1992 information diagrams airfoil coordinates computer programs original articles columns included along additional material previously published 250 pages illustrated US $28 Structural Dimensioning Radio guided Aeromodels Dr Ing Ferdinando Gale Anyone building RC aircraft needs read book Beginning description balsas characteristics Dr Ing Gale describes materials methods building model aircraft structures withstand stress intense flight Such structures need heavy difficult build sticks sheets foam fiberglass Dr Gale explains Some simple math skills required numerous examples assist understanding 105 pages illustrated US $18 Both books 85 x 11 inches softbound Prices include packaging postage US Canada Mexico Add $10 up three books sent airmail Europe $15 Asia Africa Pacific Rim countries Address B2 Streamlines PO Box 976 Olalla WA 98359-0976 Bob Holman has Scale Plans sailplanes have recently appeared British model magazines construction articles Slingsby Skylark Minimoa Slingsby T22 Prefect Slingsby Swallow Horten Fauvel AV 36 Futar R22 Rheinland Letov LF 107 Lunak SCALE SPAN FUNCTIONS 15143 in4 156t20in2 143150 in4 15103 in4 111131 in3 135145 in4 1376165 in4 15125 in4 154 Plans priced about $12 $27 some original magazine construction documentation copies available complete catalog $3 scale glider plans updates send large SASE Bob Holman Plans PO Box 741 San Bernardino CA 92402 Airfoil Plot Program updates Chuck Anderson Version 60 Sailplane Airfoil Plot program has available sailplane airfoils loaded Eppler Selig NACA RG Misc subdirectories New features include screen graphics new foam-core template option convert airfoil coordinates X-Y format importing CAD programs plot washout set ribs plotted program also completely rewritten Visual Basic DOS allows much-improved airfoil file selection should allow relatively easy conversion Visual Basic provide version Windows major addition program ability plot templates use automatic foam-core machines such Feather Cut system TECQA program plots two templates same time no leading edge width specified no lead-in ramps plotted two templates identical leading edge width specified leadin line tangent rib surface leading edge plotted lower template becomes bottom-surface template upper template becomes top-surface template slope lead-in lines over 450 lead-in line plotted horizontally height rib leading edge Lead-out lines plotted slope camber line trailing edge Three index marks plotted templates two ribs selected template model also calculates pulley setting Feather Cut machine Earlier programs have proven very slow using LaserJet printers math coprocessors program has compiled using Microsofts alternate math speed up plotting about factor four running computer math coprocessor no change speed computers math coprocessors Sailplane Airfoil Plot program 140 airfoils $60 previous 50 version Continued page 91 88 Model Aviation oaring/Blakeslee Continued page 88 42 airfoils also available $35 Chuck near release new Model Design 40 program 140 airfoils will $75 Upgrades Airfoil Plot 50 Model Design 30 $15 earlier versions $25 Contact Chuck PO Box 305 Tullahoma TN 37388 Tel 615 455-6430 Landing Points Controversy Beginning first Soaring contests has considerable debate over much landings should count Some say spot landing bonus 10 25 percent maximum flight score about right Others advocate no landing bonus contending RC Soaring boils down landing contests soaring competitions should won air ground Advocates landing bonus maintain landing glider consistently well essential flying skill should rewarded also point out top pilots get flight times landing points another means determine placings As mentioned previously re Sharks Teeth think its appropriate use column air important Soaring issues Therefore am pleased print following letter Ray Hayes sent Lil Bird information will happy print letters expressing other views After 23 years participating aspects RC Soaring still find exciting challenging highly pleasurable During time have competed soaring contests both coasts Canada Florida experiences range starting Soaring club being contest director contests participating F3B Finals Dan Prusss old Soar Nats Lately some competitors have talking about de-emphasizing completely eliminating landing bonus points duration tasks am opposed because accept challenge present AMA landing rules give us view little challenge landing sailplane precise time relatively small target included Recently participated contest required landing within field boundaries No landing tape no landing points unpracticed contestants thought real chance win Did thing different lost fewer points point consistently good landing scores requires disciplined practice program Landing points should diminished accommodate want practice Anyone objects landing equivalent LSF Level 2 [within 15 meters spot missing object contest ie total test flying skills believe RC Soaring art form proportionate individual flying skill Mastering art thermal flying also mastering landings inconceivable So say shouldnt deemphasize landings Jim White 1929-1993 much sadness learned passing Jim White last August White Company Jim wife Jane made full line quality parachutes winch hi-start use Whites moved California Washington state upon retirement several years ago Jim avid contest-goer mostly enjoyment mixing guys Jane will continue White Companys production chutes address 280 Spring View Place Sequim WA 98382 Silent Order Aeromodeling Radio SOAR Clubs Great Race 1994 X-C race cancelled last year because SOAR lost old field Central Sod Farm Naperville site year dont have dates Contact Ron Kukral 210 5 Prairie New Lenox IL 60451 information ary 1994 91 somethiug y774I COMPLETE FOAM WING KIT IEEXTTLU -BALSA AND FOAM CONSTRUCf ION INCLUDES FOAM COIlES SPARS CENT.SHEETING AND PLANSGOR&S ONLY S2495 $4495 NIlESend 51 tot complete c2ralogInclude $5 per order shipping/handling COB EHOUSE W 19 S1 POD 472 RCM DEPT #12 HiggInavIlle MO 640370472 8003227121
Edition: Model Aviation - 1994/01
Page Numbers: 76, 77, 80, 88, 91
RADIO CONTROL SOARING 1994 WORLD SOARING JAMBOREE Seven Northwestern clubs have joined together announce first World Soaring Jamboree nine-day event will held Richiand Washington May 28 through Sunday June 5 thermal slope cross-country events will have divisions novice intermediate expert pilots Contests will Open Two-Meter thermal duration Hand Launch F3J F3B Slope racing will Limited Unlimited Power Scale models will fun-flying cross country racing Scale non-Scale models Also North American Scale Soaring Association tasks can flown recognized addition soaring events WSJ will feature banquet dinner special guest speaker super evening social Entrants will also have chance participate technical seminars vendor forums WSJ promises soaring enthusiasts opportunity participate RC Soaring history Expect details event draws nearer Pilots observers interested attending can obtain information WSJ committee Send large SASE World Soaring Jamboree PO Box 4267 West Richland WA 99352 Sprite 2-Meter Dodgson Designs Bob Dodgsons latest kit nifty 2-Meter model follows illustrious record KMinnow 1980 Pixy 1985 designs Well get Sprites new interesting features first specs Wingspan78 inches Wing area585 sqin Airfoil5D7037 Weight37 ounces Wing loading90 oz/sqft Aspect ratio104 1 Wing constObechi over white foam Stab & rudderBuilt-up wood & film ControlsFlapperons elevator rudder Kit price $155 plus $8 UPS shipping add $10 nose job Bob says some builders get Sprites air within two weeks receiving kit Some Sprites light 34 ounces fully painted fuselage drops wing loading ladylike 84 ounces per square foot important working small light bubbles What new different about Sprite MonoSeam fiberglass fuselage wing attachment system Bob lays up fuselage piece joins top seam down turtledeck complete tailboom section top nose section fuselage closed open like Bobs taco shell fuselages must finished balsa block glass cloth polyester resin want part completed add $10 nose job fin built-up wood glued slot tailboom unique wing mounting system works way 1 wings plug together center section via 7/n wing rod wing alignment pin Before assembly wing rod pin installed side brass fittings fit between wings slipped onto rod pin 2 wing halves held tightly together rubber band bottom band concealed inside fuselage wings place wing halves held tightly together two brass fittings attached wing rod alignment pin project down wing bottom 3 install wings onto fuselage projecting brass fittings slip brass tubes mounted vertically along centerline fuselage fitting projects down wing rod has threaded insert base 4 towhook has threaded shank extends upward through normal hole bottom fuselage screws 76 Model Aviation Hayes points thermal hes about throw Lii Bird Reasonably-priced HL kit now available Bob Dodgsons aaugnter Megan Dodgsons new Two-Meter Sprite Sprite shows distinctive Dodgson heritage Goldberg Ultimate CowiWheel Pants Wing Skinning Video Desaflo II Wing Span 685 WeIgtt 85-95 840 sc h Engine Goldberg lrtra 300 Cowl/Wheel Pants 615 455-0735 K Please send $100 Catalog 215 Big Springs Avenue ahoma TN 37388 bottom fitting connected wing rod threads tightened up turning towhook wing towhook held firmly place towhook directly connected wing rod launching loads transferred towhook wing spar save weight maximize simplicity Sprites Auto Cad-drawn plans show glider set up flapperon roll control combined flaps ailerons ie entire wing trailing edge moves piece two servos wings can also built now-standard separate flaps aileron control system four servos wings trick Sprite fiapperon configuration landing go down go up 450 Bob says negative flapperon position provides excellent glidepath control rapid altitude loss reverse aileron differential set up landing mode computer radio quite good landing directional control negative flapperon position fact little practice can just pancake Sprite onto spot instantly squats stays put tricky part negative flapperons slow down speed like positive flaps So must keep speed down final use negative flaps control glide path same spoilers big payoff Sprites flapperons need two microservos wings low-cost nylon-geared servos work great negative flapperons have common gear stripping problem common down-flap landings general feel flapperons Sprite provide lightest possible wing loading thus best potential light-lift capability slope general sport thermal flying would consider adding weight complexity separate flaps ailerons However serious contest spot landings up flapperons require learning different landing technique have used down flaps separate ailerons Instead making high final using 900 down flaps control speed make fairly steep approach spot up flapperons require low slow approach using flapperons control altitude make pancake landing flapperon system works great n flying OpenContinued page 80 January 1994 77 ExtraiiAire IIiU Wing Span 67 WeIght 95-100 Wing Span 66 WeIght 85-95 Its Wing Span 66 WeIght 85-90 f Wing Span iu- wuglt 85-95 ts Wing Area 965sq Engine 60 Wing Area 9X sq h Enw 120 Wing Area 940 sq h Ene 120 Wing Area 860 sq Engine 120 FAX 615 455-0677 Bottom view Sprites wing shows wing attachment fitting towhook screwed Sprite towhook ready screwed threaded shank transfers launch loads wing spar Lii Bird derived Dave Thornburgs classic Bird Time Colored tissue can used dress-up LDM Industries Inc THE STRONGBOX II RECEIVER AND DAITERY PACK PROTECTION SYSTEM STRONGBOX IP larger version popular STRONGBoX has specifically __ designed meet needs giant scale flyers STRONGBOX STRONGBOX II both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray induded hardware STRONGBO 24 deep 27 wIde 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fit 40 larger size models STRONGBOX II 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit moat 120 larger size models receiver battery pack mast valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Proted valuables STRONGBOXPart #8100 STRONGBOX 11 $1195 U IndustrIes Bali Bearing Servo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost 1 ball bearing servo can upgrade 4 standard servos following three conversion kits fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus C528 C5128 C5238 & C5248 servos Kit #96004 padc..$2995 Kit #96101 pack..$795 Alrtronlcs 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..$795 JR 501 & 507 Focus H5300 RCL 05 Tower TS-51 Hobbico CS-51 Ace 330 servos Kit #98004 pack ..S2095 Kit #98101 pack..$595 NO-HEAT Tiimi SOLVENT Eliminate wobble output shaft Reduce control response deadband Reduce chance flutter Improve control surface centering Allow use pull-pull cables order send check money order Including $300 S&H LDM Industries Inc PO Box 292396 Dept 140 Tampa FL 33687-2396 Phone/Fax 813 985-5616 Fkalda residents add 6 1/2% sales tax VISA MASTER CARD Accepted Dealer InquIries Welcome C 1993 LDM Industries inc B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field RO Soaring/Blakeslee Continued page 77 Class glider separate flaps ailerons may have trouble bouncing back forth between two different landing techniques case separate flaps ailerons may better choice other hand Sprite primary contest glider flapperons good way go yield good landing potential together better light lift performance Sprite kits available direct purchase Dodgson Designs 21230 Damson Road Bothell WA 98021 Tel 206 776-8067 Bobs 1994 kit line includes 132-inch Anthem 121-inch Saber 78-inch Sprite 60-72-inch Pivot Pixy Camano Lovesong kits discontinued 1993 Standard-class replacement Camano will available soon Bob publishes own biannual newsletter Second Wind Copies $1 US $150 Canada $3 internationally Lii Bird Hand Launch Sky-Bench Aerotech Ray Hayes long-time RC soaring pilot former vice-president League Silent Flight has started own cottage industry kit business Rays first offering hand launch glider based Dave Thornburgs classic Bird Time its 9%-thick airfoil Ray says Lil Bird floats penetrates launches extremely well also suited slope flying launching via mini hi-start span 5425 inches area 270 square inches length 29 inches flying weight 12 ounces kit contains plans building instructions machine-cut balsa plywood full hardware Lil Bird features bolt-on one-piece built-up wing using 1A2 contest-grade balsa full precut sheeting top bottom leading edge spruce durability Tail surfaces solid laminated balsa balsa/plywood fuselage can hold large battery pack full-size receiver According Ray have weekend free interruptions can start Lil Continued page 88 AUCTION Tn Cnunty H/C Club 3rd Annual Aurolon & Swap Meet Jan 0 1994 Hartoon Central Schoni 21st Wesrarn Harmon IL Venders Welcome Donrs upen 900 am Auctinn Starts 1200 pm Fnr Info ronuarm Brad Gillespie 217-2343516 Jim Hudson 217-2350609 80 Model Aviation 4Internal Cut-away STRONGBOXTM LDM Industries B Servo Conversion Kits wlh Takes Hessle Oat Mosokote Trim Worki Bonds Monokote over Monokote heat Eliminatea ugly bubbles wrinkles Completely fuel-pmof easy use Will cause colors bleed Allowa time position trim pieces Also works wIth Ultracote Oracover Part #95004 oz Bottle$695 NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# 6 Buffered Y harness 7354# LiZ1 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiJII 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part # followed Airt J Fut S HitecIRCD & JR - ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hitec RCD 10729 Wheatlands Ave #C Santee CA 9207 1-2883 619 258-4940 RC SoaringlBlakeslee Continued page 80 Bird Friday evening fly Sunday afternoon Lil Bird kit $2995 plus $6 shipping direct Sky-Bench Aerotech 69598 Brookhill Drive Romeo MI 48065 Color trimming can accomplished lightweight tissue Order option $495 receive top-surface sunburst trim plus solid covering bottom Application instructions included Color choices red orange blue yellow black youre real hurry Lil Bird completely jig-built copies available Ray $78 plus $15 continental USA shipping Two new books published B2 Streamlines will interest sailplane enthusiasts press releases Wing. book Bill & Bunny Kuhlman Wingafter four years remains monthly column appearing modeling press deals specifically tailless soarers Wing. book collection first 52 articles columns have appeared RC Soaring Digest 1988 through 1992 information diagrams airfoil coordinates computer programs original articles columns included along additional material previously published 250 pages illustrated US $28 Structural Dimensioning Radio guided Aeromodels Dr Ing Ferdinando Gale Anyone building RC aircraft needs read book Beginning description balsas characteristics Dr Ing Gale describes materials methods building model aircraft structures withstand stress intense flight Such structures need heavy difficult build sticks sheets foam fiberglass Dr Gale explains Some simple math skills required numerous examples assist understanding 105 pages illustrated US $18 Both books 85 x 11 inches softbound Prices include packaging postage US Canada Mexico Add $10 up three books sent airmail Europe $15 Asia Africa Pacific Rim countries Address B2 Streamlines PO Box 976 Olalla WA 98359-0976 Bob Holman has Scale Plans sailplanes have recently appeared British model magazines construction articles Slingsby Skylark Minimoa Slingsby T22 Prefect Slingsby Swallow Horten Fauvel AV 36 Futar R22 Rheinland Letov LF 107 Lunak SCALE SPAN FUNCTIONS 15143 in4 156t20in2 143150 in4 15103 in4 111131 in3 135145 in4 1376165 in4 15125 in4 154 Plans priced about $12 $27 some original magazine construction documentation copies available complete catalog $3 scale glider plans updates send large SASE Bob Holman Plans PO Box 741 San Bernardino CA 92402 Airfoil Plot Program updates Chuck Anderson Version 60 Sailplane Airfoil Plot program has available sailplane airfoils loaded Eppler Selig NACA RG Misc subdirectories New features include screen graphics new foam-core template option convert airfoil coordinates X-Y format importing CAD programs plot washout set ribs plotted program also completely rewritten Visual Basic DOS allows much-improved airfoil file selection should allow relatively easy conversion Visual Basic provide version Windows major addition program ability plot templates use automatic foam-core machines such Feather Cut system TECQA program plots two templates same time no leading edge width specified no lead-in ramps plotted two templates identical leading edge width specified leadin line tangent rib surface leading edge plotted lower template becomes bottom-surface template upper template becomes top-surface template slope lead-in lines over 450 lead-in line plotted horizontally height rib leading edge Lead-out lines plotted slope camber line trailing edge Three index marks plotted templates two ribs selected template model also calculates pulley setting Feather Cut machine Earlier programs have proven very slow using LaserJet printers math coprocessors program has compiled using Microsofts alternate math speed up plotting about factor four running computer math coprocessor no change speed computers math coprocessors Sailplane Airfoil Plot program 140 airfoils $60 previous 50 version Continued page 91 88 Model Aviation oaring/Blakeslee Continued page 88 42 airfoils also available $35 Chuck near release new Model Design 40 program 140 airfoils will $75 Upgrades Airfoil Plot 50 Model Design 30 $15 earlier versions $25 Contact Chuck PO Box 305 Tullahoma TN 37388 Tel 615 455-6430 Landing Points Controversy Beginning first Soaring contests has considerable debate over much landings should count Some say spot landing bonus 10 25 percent maximum flight score about right Others advocate no landing bonus contending RC Soaring boils down landing contests soaring competitions should won air ground Advocates landing bonus maintain landing glider consistently well essential flying skill should rewarded also point out top pilots get flight times landing points another means determine placings As mentioned previously re Sharks Teeth think its appropriate use column air important Soaring issues Therefore am pleased print following letter Ray Hayes sent Lil Bird information will happy print letters expressing other views After 23 years participating aspects RC Soaring still find exciting challenging highly pleasurable During time have competed soaring contests both coasts Canada Florida experiences range starting Soaring club being contest director contests participating F3B Finals Dan Prusss old Soar Nats Lately some competitors have talking about de-emphasizing completely eliminating landing bonus points duration tasks am opposed because accept challenge present AMA landing rules give us view little challenge landing sailplane precise time relatively small target included Recently participated contest required landing within field boundaries No landing tape no landing points unpracticed contestants thought real chance win Did thing different lost fewer points point consistently good landing scores requires disciplined practice program Landing points should diminished accommodate want practice Anyone objects landing equivalent LSF Level 2 [within 15 meters spot missing object contest ie total test flying skills believe RC Soaring art form proportionate individual flying skill Mastering art thermal flying also mastering landings inconceivable So say shouldnt deemphasize landings Jim White 1929-1993 much sadness learned passing Jim White last August White Company Jim wife Jane made full line quality parachutes winch hi-start use Whites moved California Washington state upon retirement several years ago Jim avid contest-goer mostly enjoyment mixing guys Jane will continue White Companys production chutes address 280 Spring View Place Sequim WA 98382 Silent Order Aeromodeling Radio SOAR Clubs Great Race 1994 X-C race cancelled last year because SOAR lost old field Central Sod Farm Naperville site year dont have dates Contact Ron Kukral 210 5 Prairie New Lenox IL 60451 information ary 1994 91 somethiug y774I COMPLETE FOAM WING KIT IEEXTTLU -BALSA AND FOAM CONSTRUCf ION INCLUDES FOAM COIlES SPARS CENT.SHEETING AND PLANSGOR&S ONLY S2495 $4495 NIlESend 51 tot complete c2ralogInclude $5 per order shipping/handling COB EHOUSE W 19 S1 POD 472 RCM DEPT #12 HiggInavIlle MO 640370472 8003227121
Edition: Model Aviation - 1994/01
Page Numbers: 76, 77, 80, 88, 91
RADIO CONTROL SOARING 1994 WORLD SOARING JAMBOREE Seven Northwestern clubs have joined together announce first World Soaring Jamboree nine-day event will held Richiand Washington May 28 through Sunday June 5 thermal slope cross-country events will have divisions novice intermediate expert pilots Contests will Open Two-Meter thermal duration Hand Launch F3J F3B Slope racing will Limited Unlimited Power Scale models will fun-flying cross country racing Scale non-Scale models Also North American Scale Soaring Association tasks can flown recognized addition soaring events WSJ will feature banquet dinner special guest speaker super evening social Entrants will also have chance participate technical seminars vendor forums WSJ promises soaring enthusiasts opportunity participate RC Soaring history Expect details event draws nearer Pilots observers interested attending can obtain information WSJ committee Send large SASE World Soaring Jamboree PO Box 4267 West Richland WA 99352 Sprite 2-Meter Dodgson Designs Bob Dodgsons latest kit nifty 2-Meter model follows illustrious record KMinnow 1980 Pixy 1985 designs Well get Sprites new interesting features first specs Wingspan78 inches Wing area585 sqin Airfoil5D7037 Weight37 ounces Wing loading90 oz/sqft Aspect ratio104 1 Wing constObechi over white foam Stab & rudderBuilt-up wood & film ControlsFlapperons elevator rudder Kit price $155 plus $8 UPS shipping add $10 nose job Bob says some builders get Sprites air within two weeks receiving kit Some Sprites light 34 ounces fully painted fuselage drops wing loading ladylike 84 ounces per square foot important working small light bubbles What new different about Sprite MonoSeam fiberglass fuselage wing attachment system Bob lays up fuselage piece joins top seam down turtledeck complete tailboom section top nose section fuselage closed open like Bobs taco shell fuselages must finished balsa block glass cloth polyester resin want part completed add $10 nose job fin built-up wood glued slot tailboom unique wing mounting system works way 1 wings plug together center section via 7/n wing rod wing alignment pin Before assembly wing rod pin installed side brass fittings fit between wings slipped onto rod pin 2 wing halves held tightly together rubber band bottom band concealed inside fuselage wings place wing halves held tightly together two brass fittings attached wing rod alignment pin project down wing bottom 3 install wings onto fuselage projecting brass fittings slip brass tubes mounted vertically along centerline fuselage fitting projects down wing rod has threaded insert base 4 towhook has threaded shank extends upward through normal hole bottom fuselage screws 76 Model Aviation Hayes points thermal hes about throw Lii Bird Reasonably-priced HL kit now available Bob Dodgsons aaugnter Megan Dodgsons new Two-Meter Sprite Sprite shows distinctive Dodgson heritage Goldberg Ultimate CowiWheel Pants Wing Skinning Video Desaflo II Wing Span 685 WeIgtt 85-95 840 sc h Engine Goldberg lrtra 300 Cowl/Wheel Pants 615 455-0735 K Please send $100 Catalog 215 Big Springs Avenue ahoma TN 37388 bottom fitting connected wing rod threads tightened up turning towhook wing towhook held firmly place towhook directly connected wing rod launching loads transferred towhook wing spar save weight maximize simplicity Sprites Auto Cad-drawn plans show glider set up flapperon roll control combined flaps ailerons ie entire wing trailing edge moves piece two servos wings can also built now-standard separate flaps aileron control system four servos wings trick Sprite fiapperon configuration landing go down go up 450 Bob says negative flapperon position provides excellent glidepath control rapid altitude loss reverse aileron differential set up landing mode computer radio quite good landing directional control negative flapperon position fact little practice can just pancake Sprite onto spot instantly squats stays put tricky part negative flapperons slow down speed like positive flaps So must keep speed down final use negative flaps control glide path same spoilers big payoff Sprites flapperons need two microservos wings low-cost nylon-geared servos work great negative flapperons have common gear stripping problem common down-flap landings general feel flapperons Sprite provide lightest possible wing loading thus best potential light-lift capability slope general sport thermal flying would consider adding weight complexity separate flaps ailerons However serious contest spot landings up flapperons require learning different landing technique have used down flaps separate ailerons Instead making high final using 900 down flaps control speed make fairly steep approach spot up flapperons require low slow approach using flapperons control altitude make pancake landing flapperon system works great n flying OpenContinued page 80 January 1994 77 ExtraiiAire IIiU Wing Span 67 WeIght 95-100 Wing Span 66 WeIght 85-95 Its Wing Span 66 WeIght 85-90 f Wing Span iu- wuglt 85-95 ts Wing Area 965sq Engine 60 Wing Area 9X sq h Enw 120 Wing Area 940 sq h Ene 120 Wing Area 860 sq Engine 120 FAX 615 455-0677 Bottom view Sprites wing shows wing attachment fitting towhook screwed Sprite towhook ready screwed threaded shank transfers launch loads wing spar Lii Bird derived Dave Thornburgs classic Bird Time Colored tissue can used dress-up LDM Industries Inc THE STRONGBOX II RECEIVER AND DAITERY PACK PROTECTION SYSTEM STRONGBOX IP larger version popular STRONGBoX has specifically __ designed meet needs giant scale flyers STRONGBOX STRONGBOX II both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray induded hardware STRONGBO 24 deep 27 wIde 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fit 40 larger size models STRONGBOX II 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit moat 120 larger size models receiver battery pack mast valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Proted valuables STRONGBOXPart #8100 STRONGBOX 11 $1195 U IndustrIes Bali Bearing Servo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost 1 ball bearing servo can upgrade 4 standard servos following three conversion kits fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus C528 C5128 C5238 & C5248 servos Kit #96004 padc..$2995 Kit #96101 pack..$795 Alrtronlcs 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..$795 JR 501 & 507 Focus H5300 RCL 05 Tower TS-51 Hobbico CS-51 Ace 330 servos Kit #98004 pack ..S2095 Kit #98101 pack..$595 NO-HEAT Tiimi SOLVENT Eliminate wobble output shaft Reduce control response deadband Reduce chance flutter Improve control surface centering Allow use pull-pull cables order send check money order Including $300 S&H LDM Industries Inc PO Box 292396 Dept 140 Tampa FL 33687-2396 Phone/Fax 813 985-5616 Fkalda residents add 6 1/2% sales tax VISA MASTER CARD Accepted Dealer InquIries Welcome C 1993 LDM Industries inc B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field RO Soaring/Blakeslee Continued page 77 Class glider separate flaps ailerons may have trouble bouncing back forth between two different landing techniques case separate flaps ailerons may better choice other hand Sprite primary contest glider flapperons good way go yield good landing potential together better light lift performance Sprite kits available direct purchase Dodgson Designs 21230 Damson Road Bothell WA 98021 Tel 206 776-8067 Bobs 1994 kit line includes 132-inch Anthem 121-inch Saber 78-inch Sprite 60-72-inch Pivot Pixy Camano Lovesong kits discontinued 1993 Standard-class replacement Camano will available soon Bob publishes own biannual newsletter Second Wind Copies $1 US $150 Canada $3 internationally Lii Bird Hand Launch Sky-Bench Aerotech Ray Hayes long-time RC soaring pilot former vice-president League Silent Flight has started own cottage industry kit business Rays first offering hand launch glider based Dave Thornburgs classic Bird Time its 9%-thick airfoil Ray says Lil Bird floats penetrates launches extremely well also suited slope flying launching via mini hi-start span 5425 inches area 270 square inches length 29 inches flying weight 12 ounces kit contains plans building instructions machine-cut balsa plywood full hardware Lil Bird features bolt-on one-piece built-up wing using 1A2 contest-grade balsa full precut sheeting top bottom leading edge spruce durability Tail surfaces solid laminated balsa balsa/plywood fuselage can hold large battery pack full-size receiver According Ray have weekend free interruptions can start Lil Continued page 88 AUCTION Tn Cnunty H/C Club 3rd Annual Aurolon & Swap Meet Jan 0 1994 Hartoon Central Schoni 21st Wesrarn Harmon IL Venders Welcome Donrs upen 900 am Auctinn Starts 1200 pm Fnr Info ronuarm Brad Gillespie 217-2343516 Jim Hudson 217-2350609 80 Model Aviation 4Internal Cut-away STRONGBOXTM LDM Industries B Servo Conversion Kits wlh Takes Hessle Oat Mosokote Trim Worki Bonds Monokote over Monokote heat Eliminatea ugly bubbles wrinkles Completely fuel-pmof easy use Will cause colors bleed Allowa time position trim pieces Also works wIth Ultracote Oracover Part #95004 oz Bottle$695 NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# 6 Buffered Y harness 7354# LiZ1 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiJII 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part # followed Airt J Fut S HitecIRCD & JR - ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hitec RCD 10729 Wheatlands Ave #C Santee CA 9207 1-2883 619 258-4940 RC SoaringlBlakeslee Continued page 80 Bird Friday evening fly Sunday afternoon Lil Bird kit $2995 plus $6 shipping direct Sky-Bench Aerotech 69598 Brookhill Drive Romeo MI 48065 Color trimming can accomplished lightweight tissue Order option $495 receive top-surface sunburst trim plus solid covering bottom Application instructions included Color choices red orange blue yellow black youre real hurry Lil Bird completely jig-built copies available Ray $78 plus $15 continental USA shipping Two new books published B2 Streamlines will interest sailplane enthusiasts press releases Wing. book Bill & Bunny Kuhlman Wingafter four years remains monthly column appearing modeling press deals specifically tailless soarers Wing. book collection first 52 articles columns have appeared RC Soaring Digest 1988 through 1992 information diagrams airfoil coordinates computer programs original articles columns included along additional material previously published 250 pages illustrated US $28 Structural Dimensioning Radio guided Aeromodels Dr Ing Ferdinando Gale Anyone building RC aircraft needs read book Beginning description balsas characteristics Dr Ing Gale describes materials methods building model aircraft structures withstand stress intense flight Such structures need heavy difficult build sticks sheets foam fiberglass Dr Gale explains Some simple math skills required numerous examples assist understanding 105 pages illustrated US $18 Both books 85 x 11 inches softbound Prices include packaging postage US Canada Mexico Add $10 up three books sent airmail Europe $15 Asia Africa Pacific Rim countries Address B2 Streamlines PO Box 976 Olalla WA 98359-0976 Bob Holman has Scale Plans sailplanes have recently appeared British model magazines construction articles Slingsby Skylark Minimoa Slingsby T22 Prefect Slingsby Swallow Horten Fauvel AV 36 Futar R22 Rheinland Letov LF 107 Lunak SCALE SPAN FUNCTIONS 15143 in4 156t20in2 143150 in4 15103 in4 111131 in3 135145 in4 1376165 in4 15125 in4 154 Plans priced about $12 $27 some original magazine construction documentation copies available complete catalog $3 scale glider plans updates send large SASE Bob Holman Plans PO Box 741 San Bernardino CA 92402 Airfoil Plot Program updates Chuck Anderson Version 60 Sailplane Airfoil Plot program has available sailplane airfoils loaded Eppler Selig NACA RG Misc subdirectories New features include screen graphics new foam-core template option convert airfoil coordinates X-Y format importing CAD programs plot washout set ribs plotted program also completely rewritten Visual Basic DOS allows much-improved airfoil file selection should allow relatively easy conversion Visual Basic provide version Windows major addition program ability plot templates use automatic foam-core machines such Feather Cut system TECQA program plots two templates same time no leading edge width specified no lead-in ramps plotted two templates identical leading edge width specified leadin line tangent rib surface leading edge plotted lower template becomes bottom-surface template upper template becomes top-surface template slope lead-in lines over 450 lead-in line plotted horizontally height rib leading edge Lead-out lines plotted slope camber line trailing edge Three index marks plotted templates two ribs selected template model also calculates pulley setting Feather Cut machine Earlier programs have proven very slow using LaserJet printers math coprocessors program has compiled using Microsofts alternate math speed up plotting about factor four running computer math coprocessor no change speed computers math coprocessors Sailplane Airfoil Plot program 140 airfoils $60 previous 50 version Continued page 91 88 Model Aviation oaring/Blakeslee Continued page 88 42 airfoils also available $35 Chuck near release new Model Design 40 program 140 airfoils will $75 Upgrades Airfoil Plot 50 Model Design 30 $15 earlier versions $25 Contact Chuck PO Box 305 Tullahoma TN 37388 Tel 615 455-6430 Landing Points Controversy Beginning first Soaring contests has considerable debate over much landings should count Some say spot landing bonus 10 25 percent maximum flight score about right Others advocate no landing bonus contending RC Soaring boils down landing contests soaring competitions should won air ground Advocates landing bonus maintain landing glider consistently well essential flying skill should rewarded also point out top pilots get flight times landing points another means determine placings As mentioned previously re Sharks Teeth think its appropriate use column air important Soaring issues Therefore am pleased print following letter Ray Hayes sent Lil Bird information will happy print letters expressing other views After 23 years participating aspects RC Soaring still find exciting challenging highly pleasurable During time have competed soaring contests both coasts Canada Florida experiences range starting Soaring club being contest director contests participating F3B Finals Dan Prusss old Soar Nats Lately some competitors have talking about de-emphasizing completely eliminating landing bonus points duration tasks am opposed because accept challenge present AMA landing rules give us view little challenge landing sailplane precise time relatively small target included Recently participated contest required landing within field boundaries No landing tape no landing points unpracticed contestants thought real chance win Did thing different lost fewer points point consistently good landing scores requires disciplined practice program Landing points should diminished accommodate want practice Anyone objects landing equivalent LSF Level 2 [within 15 meters spot missing object contest ie total test flying skills believe RC Soaring art form proportionate individual flying skill Mastering art thermal flying also mastering landings inconceivable So say shouldnt deemphasize landings Jim White 1929-1993 much sadness learned passing Jim White last August White Company Jim wife Jane made full line quality parachutes winch hi-start use Whites moved California Washington state upon retirement several years ago Jim avid contest-goer mostly enjoyment mixing guys Jane will continue White Companys production chutes address 280 Spring View Place Sequim WA 98382 Silent Order Aeromodeling Radio SOAR Clubs Great Race 1994 X-C race cancelled last year because SOAR lost old field Central Sod Farm Naperville site year dont have dates Contact Ron Kukral 210 5 Prairie New Lenox IL 60451 information ary 1994 91 somethiug y774I COMPLETE FOAM WING KIT IEEXTTLU -BALSA AND FOAM CONSTRUCf ION INCLUDES FOAM COIlES SPARS CENT.SHEETING AND PLANSGOR&S ONLY S2495 $4495 NIlESend 51 tot complete c2ralogInclude $5 per order shipping/handling COB EHOUSE W 19 S1 POD 472 RCM DEPT #12 HiggInavIlle MO 640370472 8003227121