Radio Control: Soaring

MAYBE column will come out little un because Im watching Olympics trying type Wouldnt great RC Soaring Olympic event Theres nothing like world-class competition get old juices flow ing Only few Sailplane pilots get privilege flying international competition us can sample rush flying local club contests Hope try Youll like ATRCS radio news August 1988 column described ATRCS pronounced A-Tracks microprocessor conversion Airtronics Mod ule 75P transmitter Last month Asher Carnis chael told us pleased ATRCS set Gene Englegau Tom Mroz Control Systems Laboratories developed ATRCS stands Advanced Technology Radio Control System give us exotic mixing features European radioshut reasonable price Six contestants F3B team-selection finals used Airtronics Module/ATRCS radios emphatic about happy mean six addition Gene finalist See F3B finals report else issue Gene being topnotch Sailplaner designed features youll likely ever need flying Glidersincluding flyingwing types Now heres good news Airtronics has signed licensing agreement CSL exclu sive North American rights ATRCS will come out factory-made ATRCS radio about first year new radio will called Vision 85P will list $850 four servos Remember actual selling prices usually discounted will also 8P Pattern version 8-channel Vision will share same transmitter case RF section 8channel PCM FM narrow-band receiver ex tremely popular Spectra SP7P 7-channel radio troduced 1988 Visions list price $250 Spectra designed power flying ATRCS computer encoding provides wealth additional whistles bells capability Module 75P radio $530 list price plus $300 conversion totals $830 However older 7-channel single-conversion non-PCM set Vision transmitter case will finished very distinctive black have Module 75P transmitter want go ATRCS CSL will continue doing conversions about year CSL will make initial batch ATRCS en coder boards northern California will air freighted Japan installation completed sets alr freighted back get quickly possible represents strong com mitment Airtronicswhich think very forSailplane Designs San Diego CA has pins available Schweizer 2-32 1-26 2-33 plus LS 1 Also available ASW-20 Grob Twin Astir Ordering information column 48 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N WInnebago Dr Sedalla CO 80135 No RC Combat plane Barbara Renaud holds airplane mockup used demonstrate bells whistles ATRCS microprocessor Airtronics Vi sion 5P5 transmitter son Tim holding Based number control surfaces mockup must several servos underside hence visible photo FK-1O FoxgordlKindrick design flown Westem Great Race July Crosscountry plane spans 170 People L-R Gary Roberts Craig Foxgord Keith Kindrick Paul Trist Fred Weaver Temperature 11 8 time tunate Sailpianers After car radios 85% business Gliders represent mi nor part remaining model aviation radio market Airtronics founder Lee Renaud Sailpianer himself Barbara Bob Tim re tain strong interest part hobby have hunch Vision will become radio serious Sailplaners because its reasonable price tremendous versatility Simple rudderand-elevator Gliders dont need computer encoding way go plane uses four channels Also after period time think Vision will help boost interest F3B flying because has required features greatly eases setting up mixing camberchanging crow landing etc case dont recall features ATRCS abbreviated rundown 1 Stores full setups up four planes 2 Has seven type-of-plane including two fly ing wings templates specil num ber servos what servo controls templates essentially preprogram computer configure transmitter controls suit plane dont have program scratch time 3 Receiver selected keyboard cludes Airtromcs Futaba types 4 Has trim travel adjustment reversing eight channels 5 Provides required mixing plus aileron differential crow Mixing done within computer LCD shows mix percentage full travel No pots reversing switches used 6 Three-position switch selects preset wing camber settings launch cruise speed re flex 7 PCM failsafe feature can used disabled Id suggest keeping close touch fa vorite dealer find out Vision 85P will hit shelves get try playing com puter program Its very similar popular computer spreadsheets like Lotus 1-2-3 col umns rows five columns Main menu Basic configuration Surface adjustment Mixer gains Presets/Dual-rates up 12 rows set various adjustments Its difficult fact quite bit fun get impression Im enthusiastic about ATRCS youre right Continued page 164 00 VINTAGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 31/a"234 3/a 13341314133/4214414 11443/i15/4311443/a3/51/i 11451144141145334 1/a6/21451h1/a6/2 4LiAMS SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Send $3 fully Illustrated catalog thpae other kits accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 January 1989 49 Three sizes 0 top-quality towline para chutes available JL White Co One-ft ruler shown size comparison AVAILABLE AT AMERICAS FINEST HOBBY SHOPS 0/S TRIBUTED BY SMUTh ZNDUDaZDD 7550 San Gabriel Road cadeo cA 53422 4561717 SCALE WHEELS RADIO CONTROL ROL-UNE -FLIGHT FUSELAGE JI STATIONS THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes AvailableRegular- Fuselages Up 6 Wide Jumbo- Fuselages Up 9 Wide Use Own Building Board Work Ben& Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Stardard Jig StationsSI 795 Box 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails induding mounting nuts2195 Include S 250 Per Item UPS esidents Include 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 1 476-8639 three sequential passes front flight judges required target sleeve usually carried internally aircraft within ex ternally mounted pod sleeve typically /2 3A length aircraft should towed distance about 10 20 times length towing aircraft After deploying sleeve flying cruise speed medium altitude straight flyby made low altitude 50 60 ft simulate ground-to-air gunnery training run low-altitude pass 10 20 ft made wind parallel runway just yond landing area target sleeve tow ing cable dropped Calling drop performing just model passes front judges can make good impression have learned drop sleeve line onto runway 50-75 ft tow cord can become entangled prop landing modelusually tow model have done twice can mess basic requirements tow mechanism 1 Hold folded sleeve reel tow cord securely until released 2 On command eject sleeve unreel full length tow cord 3 On command release tow cord reel ways accomplish items course sketches show done Swiss target-tow model C-3506 Schlepp using servo tow functions trial error plenty latter found out few things may help others want try tow system First type cloth used construct target sleeve important want lightweight very springy material can folded compressed small space about 1 x 2 x 3 will released tend spring out its original tubular shape also want material un affected moisture tried silk worked OK perfectly dry light drizzle turned soggy ball would unfurl did have luck Sigs Koverall polyester covering material ex pect lightweight Dacron cloth used sailmakers construct spinnakers thats kind sail landlubbers would ideal constructing target sleeves way color sleeves used full-size Schlepp Dayglo Red Orange reel spool shown photo built up hard balsa /16 plywood made could easily removed unit servo model tow system servo operated off auxili ary channel transmitter auxiliary channel lever placed center position takeoff raised full Up position deploy sleeve moved full Down drop sleeve tow cord diagrams show mechanism operates photo may able see small electric motor geared spool reel mo tor taken old large servo serves two pur poses motor normally shorted out across its brushes sleeve deployed mo tor acts electric brake slow down un winding reel Some form braking electri cal mechanical will have employed keep reel overspeeding increasing chances tangling model also use motor assist re winding tow cord reel following flight removing shorting plug motor leads connecting single C-cell-size Ni-Cd motor reel turns slowly makes job rewinding 50 ft Dacron tow cord easy system lightweight convenient reliable youd like try something little fun challenging usually bomb bellytank drop have go target tow option RC Soaring/Blakeslee Continued page 49 Need good parachute Jim White has making top-quality parachutes since 1975 chutes can used winches hi-starts hand towing have eight panels highstrength marine-quality reinforced nylon high-test nylon shroud lines lines contin uous top loop over canopy maintam contour down form line loop Jim offers three sizes Large 126-sq-in canopy normal flying Small 82-sqin canopy F3B-legal size cute little Baby good hand-towing hi-starts sell $11 plus $150 postage Standard colors red orange black white extra buck Jim will make up cus tom chutes panel color specifi cation panels can standard colors plus blue green yellow purple No need get chute mixed up others use White Company chutes recommend highly Jims address 122 Spring View Place Sequim WA 98382-9645 telephone 206 683-2893 Sailplane pins photo shows four six Sailplane pins available Gary Anderson American Sailplane Designs clock wise top Schweizer 1-26 2-33 LS-1 Schweizer 2-32 Also available Grob 103 Twin Astir ASW-20 really finequality enameled pins would look great hat tie lapel include good springloaded fastener stamped brass kind price $5 plus $150 per order postage ASDs address 2626 Coronado Ave #89 San Diego CA 92154 youre send along extra $3 Garys very interesting catalog Sailplane kits made good ol US Youll likely surprised number unusual planes available ASD High-tech Sailplane constructiQn Martin Bamerts article September column wing molding sparked lot correspondence builders modern types 164 Model Aviation COMPOSITE MA TERIALS CARBON FIBER LAMINATES CARBON & KEVLAR MATS KEWAR/GRAPHITE FABRICS 68 ozi sq IL GLASS CLOTH CARBON & KEVLAR TAPES CARBON FIBER RIBBON GLASS FOAM PANELS GLASS END GRAIN BALSA PANELS CARBON FIBER END GRAIN BALSA PANELS BRAIDED CARBON CORD B74 CARBON FIBER FLEX PLATES SAFETPOXY Epoxy LarnInIng ResIn Send SASE complete listing products Aerospace Composite Products PO Box 16021 livIns CA 714 250-1107 TWO NEW FLIGHT BOXES Consplefely assenbled linished Made USA SnIb top quality wood construction Two large drawers Unique drawer locks Onrall son 0 plus shipping Large boo $12500 plus shipping includes fuel compartmenfbafterypownr panel comparfmnofadjustable fuselage cradins Manep back goarantee send si specs call 1415 3837730 Inaso message Flights Fancy eramude fin S P0 Sna La Honda Ca 94020 TRAINERFOAMAIREMONARCH SPAN IA fl95 SPAN AN EIGHT 19-22 lbs 3CHWEIGHT 5WEIGHT 2 IA95 POWER 0 ER 0$69 POWER 3 4 CHANNEL 4CH 164~FOUR CHANNELFOUR CHANNEL CALL OR WRITE FOR FREE INFO,ART 1 NEODESHA KS 66757 ON SAC KITS AND QUADRA PRICES 3252821 FREE SHIPPING ON KIT ORDERMASTERCARD ACCEPTED construction Keith Kindrick Glendora CA has making wings using vacuum bag technique Keith works closely Craig Foxgord jointly developed se ries FK planes Keith also compares notes Joe Wurts has done great deal bagging thought readers would interested what Keith has say about making glass foam wings Keiths letter Ive making carbon composite spars mold wings typical wing might use 010 x 0375-in top spar 0035 x 0375in bottom spar channel out 0375-in-wide grooves foam core using sanding block straightedge spars seat flush surface next step pulling vacuum glass-fiber-and-epoxy wing skins last time Joe came over 1150 outside epoxy sets quite fast temperature Joe has also worked heat thought funny watching trying get everything set before epoxy went oft2 Joe agree thing though can run calculations day wings strength dont really know works until plane test flown big pain neck because tend overbuild wings dont break weight wing loadings higher need big con cern because wed like have advantage lightness thermal contests Glass fiber construction will give both us ability use 100% winch power avail able Aerodynamics preaching what can called optimum levels because aecurate smoother wings Once have flown glass wing very hard go back wood Both us agree important concept type construction may heavier build materials get 100% airfoils designed lift drag coefficientswhich theory will offset weight better wing should able take advantage same light lift balsa wing though wing heavier trick make compromise among factors construction aerodynamics achieve good wing still light possi ble what frustrating Joe myself cause realize much easier balsa Lower weight allows get away lower-camber sections 2% still able thermal reason have chosen Ep pler 387 its 37% camber higher camber low profile drag 91% thick hope average out performance normal Ther mal Duration contests Ill let know works out As actual construction FK-l0s 170-in wing center panels use layer 60-oz unidirectional 30-oz bidi rectional glass 30 outside 60 side uni fibers oriented spanwise par allel length wing impor tant because uni acts part spar tips use two layers 30 bidirectional glass tal weight 84 oz cores cut 2-lb blue styro foam thing use no real advantage using white 1-lb foam because weight difference small matter higher-density foam stronger does crush during vacuum begging like 1lb stuff does airfoil Eppler 374 full-span no washout have looking possibility cut ting cores others have large library airfoils people supply least copy section want can enlarge re duce Enclosed list prices feel fair compared what others have asking am also process making up list materials necessary bagging have lots glass epoxy Mylar can share others small quantities reasonable cost way can catch up Europeans get people trying new meth ods Id like help get started copy Keiths wing-core price list Straight panel 100-in spanone $50 two sets $40 three sets $30 Three- four-panel 100-in spanone $60 two sets $50 three sets $40 Straight panel two-meter spanone $40 two sets $30 Three- four-panel two-meter spanOne $50 two sets $40 Three- four-panel Open class 100-in 170in spanone $80 two sets $70 UPS shipping will vary depending distance Best thing get touch Keith arrange exact prices delivery Keiths address 431 N Marcile Ave Glendora CA 91740 tele phone 818 963-5352 LSF news recent announcement League Silent Flight contained two interesting items First LSF has its first non-American Level V member Mal Pring Valley View South Australia became 62nd per son achieve Level V Mal worked al six years finished up 8-hour slope flight January 1988 Congratulations Poreer Anderson Products Inc Only certil led checks noney orders accepted Mininun order gixee three packages 4 Powercoles t53 hOper package S 150 shippwg handling CT residents add 75% sales tan Prices sabject change sithoat retice DEALER INOJIRSjS INVITED forthe info,nalion deale ceo send SASS Bosiness Card SERMOS RIC SNAP CONNECTORS0 Clar Com01 31*1011 Box 16787 Slamftxd CT 905 203322-6294 January 1989 165 MK 231 OR PFM 3200 Mooney 1/5th SCALE SEMI-KIT WAYNE SIEWERT RADIOAMA NATh1st PLACE WINNER kI 4-6 CHANNEL1988 NATS EXPERT ENGINEjjjJ PORSCHE FI7TEO MOONEY 90-1082 CYCLE 120-4 CYCLE SPAN 88 AREA 990SQIN WEIGHT 12-15# Fiberglass Cowlings Windshield Tip Lenses Plastic Elevator & Rudder Surfaces Rolled Plans Scale Documentation Full Instructions Scale Spinner WAYNE SIEWERT 2837 18th Ave So. MPLS MN 55407 USA 6127227564 Mal second item might considered slightly bizarrethe first Double Level V Bob Chainpine Newport News VA completed Level V some time ago enjoyed much decided again LSF permission Bob started over again completed Level No 2 January 1985 Finishing up second Level V took over three-and-a-half years being com pleted August 1988 Bob certainly con gratulated accomplishing something twice us cant once Competition Products foam wings Last month Ed Bertons description foam wing cores Full-Size construction saddles month Ed continues telling us about using ep oxy attach balsa skins cores Eds letter Most wings have done 3M No 77 spray adhesive think 3M tape stronger get shot aligning skins core misalign skin its over almost impossible separate two used epoxy set Windsong wings Im now flying epoxy very thinmixed 31 ratioand available Fiberglass Coat ings 813 822-3689 costs about $8 per quart called 204LV used about 114 oz per skin about 5 oz total both wings apply epoxy onepiece skins 3-in-sq piece / plywood used squeegee allows applying very coating point have very thin coat epoxy has started soak balsa skin next apply some epoxy leading trailing edges core swath about 34-in wide Before skin applied core take 3-in foam paint roller go over skin can add epoxy skin roll can fill roller epoxy apply skin foam-roller procedure important because 1 epoxy applied 1/ ply very thin absorbed balsa skin applied core stage could areas poor bondingor no bonding 2 epoxy applied brush can uneven and/or thick 3 Using foam roller allows epoxy applied ply squeegee soak skin epoxy applied roller raised maldng possible good bond core Incidentally have found Sig-Bond aliphatic resin glue very good joining balsa sheets making one-piece skins strong will show joint lines after covering may recall Competition Products has unique capability cutting foam cores up 72 longand perfect quality too So need cores size Id suggest getting touch Ed 921 Birdie Way Apollo Beach FL 33570 phone 813 645-5171 rmt club newsletters receive Silent Flyer South Bay Soaring Society edited John Dvorak recent feature has series articles Patrick Kelly called Pilots Logbook Patrick wrote such good piece Glider trimming thought should borrow share readers times have seen someone add remove little nose weight trim level flight Did know real reason moving CU center-of-gravity should change stability plane trim neither until just recently suspect lot others like makes sensemoving CU change trimbecause have retrim move CU right Well yes no primary reason carefully positioning CG control pitch stability CG nor mally located ahead wings center pres sure lift balanced downward lift horizontal stabilizer youve seen toy consists man holding barbells curve downward keep CG below bal ance point have general idea case plane CU moment downward lift stab must balance around lift point plane fly level As CU moved farther forward center-of-pressure CP exerts force takes greater stab incidence down-force bal ance also takes force read control movement alter pitch thus plane has static stability As CU moved back nose weight removed converse trueuntil CU same point CP stability neutral point stabi lizer incidence must set give zero lift CU moved farther back plane will become unstable As can see moving CU af fects well controls respond Proper trim ming procedure set CU control sensitivity like set incidence level flight Using elevator trim no substitute changing incidence entire surface because offset trim creates added drag advantage all-flying stab entire surface trimmed BB sharp-eyed readers may have noticed 166 Model Aviation MORE INFO SEND 5ASE Stainless Steel #11 Blades Carbon Steel -$895 per 100 Stainless -$1485 per 100 Delivered Check MO Visa MC Satisfaction Guaranteed Berkeley Trading Co PO Box 25 Berkeley Springs WV 25411 y304 258-2773 AMA Logo Ring S Approved ACADEMY OF MODEL AERONAUTICS Rings cast SOiid 10K Cold Price $16000 pius $250 Shipping Ordering lnntructions Send Check Money Order Name Address Ring size AMA No NAYCO Co BOa 21 Stratford NJ 08084 Please alive 4 toO weeks iv delvnry Naw Jesey residents add 6% tao Control Line Products Modeists serui t Modelers ohin Frend login*gdjastabie Rudder turns ~Caetral flaresCanirnl Lines 4 Heavy Daty Beiicraeks*ffandies bAdiastableteadnottaides*tlassic Kits ~Custnm Mviii Mounts Ond much mach ante tiuninuni Inserts tN5tRPgSStD IttlittCttRANtttDtttISFttTiOIi Send name address aed $110 receive ear new eapanded catalet will let $200 ott poor hint order Crotinmon Models inc i3ii E 610 WwwiOw irdoin ddOld denier inquiries incited THE CAMANO IS BACK Serious contest flyers finally discovering CAMANO sportysized gliders what LOVESONG open class has winning major con tests flown pilots such Steve Brad Clasen Jim Thomas C7AMANO now better ever featuring new computer drawn plans glassed flaps AFAR T mLxing system etc Send 2 stamps copy complete catalog championship multichanne l gliders IDODUSON DESIGNS 21230 Damson Rd Bothe 11 WA 98021 2067768067 use term static stability two kinds stability static dynamic pur poses static refers initial reaction plane after control input raise nose plane has static stability nose should drop release neutralize elevator control has neutral stability nose should re main left should continue rise probably rapidly plane unstable Dynamic stability refers oscillations occur statically stable plane raise nose let drop will drop past orig inal attitude will rise go past again dynamically stable plane will exhibit de creasing oscillations neutrally stable plane will maintain os cillations forever An unstable plane will exhibit oscillations getting worse worse until swooping bottom stalling top oscilla tions Dynamic stability nice am concentrat ing static stability moment Raising nose good test static stability because stable plane will drop its nosebut will unstable after rising stall left decide has occurred However shal low dive revealing maneuver stable plane will raise its nose after releasing Down stick An unstable will tuck dive Sound famil iar Now know dive test works what looking can hope will now better able trim plane course still have de cide much stability right hey Thats what makes hobby fun Richland Slope Scale Fun-Fly correction October column photos taken First An nual Scale Slope Fun-Fly SG-38 Primary Glider identified belonging Tony Palethorpe actually Erik Eiches Vancouver BC Erik has ill good see note him Northwest SS newsletter thanking friends getwell wishes saying things go according plan should back first contest 89 flying season Good going Erik Just give little advance info 89 Scale Slope Fun-Fly Wil Byers says planning four days hope attract foreign fliers making truly international event So Scale enthusiasts should plan spend end May State Washington RC Pylon Racing/Hager Continued page 50 great nice touch race meet Sunday racing went about same Sat urday Q500 competition very very close anybodys race between top five people going fast matter going make mistakes might push back standings green batch workers fliers few complaints guys did great job talk having combined Canadian/USA meet Chester next year right middle Prairie district North Central West district has possibilities attract ing 30 40 fliers F-I hope comes through Results July 9 1988 1 L Elbertl27 2 J Davidsonl41 3 M Sperry131 4 R Spicherl36 5 C Swaneyl42 Results July 10 1988 1 L Elbert122 2 D Tulbergl33 3 M Sperry123 4 D Cady132 5 R Spicherl41 Next well go Puget Sound Northwest Race Report Pylon Racers Puget Sound August 6-7 1988 Kitsap County Area Radio Control Society ARCS Props hosted first annual Sum mer Classic Pylon Race unused portion Kitsap Airport absolutely great place flywell al Two green wails bordered course big trees about 300-400 ft away cases caused everybody fly tight made closer races great help local club provided looks like great racing site some years come Saturday some new some old fac es come out race again Old-timers Nel son Eddy Dean King Newcomers Jer ret Cangie Jim Hursh Phil Bames Jon Cas tlemen addition regulars three local ARCS members try Q500 Phil Barnes Jim Hursh Jon Castleman didnt too badiy considering never raced before Unfortunately Phil Barnes found trees Saturday dont know trees gave back though district fly Q500 round between F-I round give 10-12 F-I fliers some fixing time Some fliers choose fly both Q500 F-I Take Nelson youre-in-the-next-heat Eddy example Quickie 11 entries Saturday three Sunday due some attrition Satur day Newcomer Jerret Cangie brought out new hobby-town edge tried hone asphalt between #2 #3 Well least walked away Better luck next race Jerret Saturdays Q500 results 1 Nelson Eddy 13980 2 Adam Darr20l69 3 Jon Pack erl5813 4 Joe Harris20214 5 John Er ickson2 1999 Formula Northwest coming gether races tossup will win Everybody getting better faster Chuck Eads Oregon lost another around pylon #3 Don Rice myself wing-tip-to-wing-tip 10 laps went down under #3 pylon stay ahead Don last IENDURANCE RUBBER MODELSA 2 CaPTORSTHE EASY B31M5 Gliders IS Span U 18 Spanv 122f95 - 0 E SLOWPOKE 16 Span2 Yard B rds P c h2Pennys$595 P op 2 Span P sac P opA arlor PlanesThe Nov Ce Penny Plane y M 22 KORDA MBRYO20 EMBRYO SPORT $8500 SanSpan $850 OUTSTANDING DETAILS 3-VIEWS & HISTORY 0 I AAERONCA K 1937A ALCO SPORT 1929 WATERMAN RACER 1921 U ZIPPY SPORT ARVHEATH PARASOL 1928 VRON WILLIAMS BOOK ON 5 $825 INDOOR MODEL AIRPLANES $1595 ABALSA PACK $825 P-NUT PACK $825A TISSUE 10 Ige Scot roll ... $695 CONDENSER PAPER 216325 MICROLITE $325U LUBE $195BALSACEMENT$195E yTHRUST BEARINGS Mini Dual Dual. $100y IRUBBER 025 090 005 inc & 3/16 $265 61 WINDER $595 161 MARK 1 $1295 WE STOCK PECK RIN & BROWN A-23 CO ADD 10% POSTAGEMINIMUM POSTAGE $200 U NEW 18-PAGE ILLUST CATALOG $200 January 1989 167 responding advertisers mention read about ModelAviation

MAYBE column will come out little un because Im watching Olympics trying type Wouldnt great RC Soaring Olympic event Theres nothing like world-class competition get old juices flow ing Only few Sailplane pilots get privilege flying international competition us can sample rush flying local club contests Hope try Youll like ATRCS radio news August 1988 column described ATRCS pronounced A-Tracks microprocessor conversion Airtronics Mod ule 75P transmitter Last month Asher Carnis chael told us pleased ATRCS set Gene Englegau Tom Mroz Control Systems Laboratories developed ATRCS stands Advanced Technology Radio Control System give us exotic mixing features European radioshut reasonable price Six contestants F3B team-selection finals used Airtronics Module/ATRCS radios emphatic about happy mean six addition Gene finalist See F3B finals report else issue Gene being topnotch Sailplaner designed features youll likely ever need flying Glidersincluding flyingwing types Now heres good news Airtronics has signed licensing agreement CSL exclu sive North American rights ATRCS will come out factory-made ATRCS radio about first year new radio will called Vision 85P will list $850 four servos Remember actual selling prices usually discounted will also 8P Pattern version 8-channel Vision will share same transmitter case RF section 8channel PCM FM narrow-band receiver ex tremely popular Spectra SP7P 7-channel radio troduced 1988 Visions list price $250 Spectra designed power flying ATRCS computer encoding provides wealth additional whistles bells capability Module 75P radio $530 list price plus $300 conversion totals $830 However older 7-channel single-conversion non-PCM set Vision transmitter case will finished very distinctive black have Module 75P transmitter want go ATRCS CSL will continue doing conversions about year CSL will make initial batch ATRCS en coder boards northern California will air freighted Japan installation completed sets alr freighted back get quickly possible represents strong com mitment Airtronicswhich think very forSailplane Designs San Diego CA has pins available Schweizer 2-32 1-26 2-33 plus LS 1 Also available ASW-20 Grob Twin Astir Ordering information column 48 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N WInnebago Dr Sedalla CO 80135 No RC Combat plane Barbara Renaud holds airplane mockup used demonstrate bells whistles ATRCS microprocessor Airtronics Vi sion 5P5 transmitter son Tim holding Based number control surfaces mockup must several servos underside hence visible photo FK-1O FoxgordlKindrick design flown Westem Great Race July Crosscountry plane spans 170 People L-R Gary Roberts Craig Foxgord Keith Kindrick Paul Trist Fred Weaver Temperature 11 8 time tunate Sailpianers After car radios 85% business Gliders represent mi nor part remaining model aviation radio market Airtronics founder Lee Renaud Sailpianer himself Barbara Bob Tim re tain strong interest part hobby have hunch Vision will become radio serious Sailplaners because its reasonable price tremendous versatility Simple rudderand-elevator Gliders dont need computer encoding way go plane uses four channels Also after period time think Vision will help boost interest F3B flying because has required features greatly eases setting up mixing camberchanging crow landing etc case dont recall features ATRCS abbreviated rundown 1 Stores full setups up four planes 2 Has seven type-of-plane including two fly ing wings templates specil num ber servos what servo controls templates essentially preprogram computer configure transmitter controls suit plane dont have program scratch time 3 Receiver selected keyboard cludes Airtromcs Futaba types 4 Has trim travel adjustment reversing eight channels 5 Provides required mixing plus aileron differential crow Mixing done within computer LCD shows mix percentage full travel No pots reversing switches used 6 Three-position switch selects preset wing camber settings launch cruise speed re flex 7 PCM failsafe feature can used disabled Id suggest keeping close touch fa vorite dealer find out Vision 85P will hit shelves get try playing com puter program Its very similar popular computer spreadsheets like Lotus 1-2-3 col umns rows five columns Main menu Basic configuration Surface adjustment Mixer gains Presets/Dual-rates up 12 rows set various adjustments Its difficult fact quite bit fun get impression Im enthusiastic about ATRCS youre right Continued page 164 00 VINTAGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 31/a"234 3/a 13341314133/4214414 11443/i15/4311443/a3/51/i 11451144141145334 1/a6/21451h1/a6/2 4LiAMS SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Send $3 fully Illustrated catalog thpae other kits accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 January 1989 49 Three sizes 0 top-quality towline para chutes available JL White Co One-ft ruler shown size comparison AVAILABLE AT AMERICAS FINEST HOBBY SHOPS 0/S TRIBUTED BY SMUTh ZNDUDaZDD 7550 San Gabriel Road cadeo cA 53422 4561717 SCALE WHEELS RADIO CONTROL ROL-UNE -FLIGHT FUSELAGE JI STATIONS THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes AvailableRegular- Fuselages Up 6 Wide Jumbo- Fuselages Up 9 Wide Use Own Building Board Work Ben& Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Stardard Jig StationsSI 795 Box 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails induding mounting nuts2195 Include S 250 Per Item UPS esidents Include 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 1 476-8639 three sequential passes front flight judges required target sleeve usually carried internally aircraft within ex ternally mounted pod sleeve typically /2 3A length aircraft should towed distance about 10 20 times length towing aircraft After deploying sleeve flying cruise speed medium altitude straight flyby made low altitude 50 60 ft simulate ground-to-air gunnery training run low-altitude pass 10 20 ft made wind parallel runway just yond landing area target sleeve tow ing cable dropped Calling drop performing just model passes front judges can make good impression have learned drop sleeve line onto runway 50-75 ft tow cord can become entangled prop landing modelusually tow model have done twice can mess basic requirements tow mechanism 1 Hold folded sleeve reel tow cord securely until released 2 On command eject sleeve unreel full length tow cord 3 On command release tow cord reel ways accomplish items course sketches show done Swiss target-tow model C-3506 Schlepp using servo tow functions trial error plenty latter found out few things may help others want try tow system First type cloth used construct target sleeve important want lightweight very springy material can folded compressed small space about 1 x 2 x 3 will released tend spring out its original tubular shape also want material un affected moisture tried silk worked OK perfectly dry light drizzle turned soggy ball would unfurl did have luck Sigs Koverall polyester covering material ex pect lightweight Dacron cloth used sailmakers construct spinnakers thats kind sail landlubbers would ideal constructing target sleeves way color sleeves used full-size Schlepp Dayglo Red Orange reel spool shown photo built up hard balsa /16 plywood made could easily removed unit servo model tow system servo operated off auxili ary channel transmitter auxiliary channel lever placed center position takeoff raised full Up position deploy sleeve moved full Down drop sleeve tow cord diagrams show mechanism operates photo may able see small electric motor geared spool reel mo tor taken old large servo serves two pur poses motor normally shorted out across its brushes sleeve deployed mo tor acts electric brake slow down un winding reel Some form braking electri cal mechanical will have employed keep reel overspeeding increasing chances tangling model also use motor assist re winding tow cord reel following flight removing shorting plug motor leads connecting single C-cell-size Ni-Cd motor reel turns slowly makes job rewinding 50 ft Dacron tow cord easy system lightweight convenient reliable youd like try something little fun challenging usually bomb bellytank drop have go target tow option RC Soaring/Blakeslee Continued page 49 Need good parachute Jim White has making top-quality parachutes since 1975 chutes can used winches hi-starts hand towing have eight panels highstrength marine-quality reinforced nylon high-test nylon shroud lines lines contin uous top loop over canopy maintam contour down form line loop Jim offers three sizes Large 126-sq-in canopy normal flying Small 82-sqin canopy F3B-legal size cute little Baby good hand-towing hi-starts sell $11 plus $150 postage Standard colors red orange black white extra buck Jim will make up cus tom chutes panel color specifi cation panels can standard colors plus blue green yellow purple No need get chute mixed up others use White Company chutes recommend highly Jims address 122 Spring View Place Sequim WA 98382-9645 telephone 206 683-2893 Sailplane pins photo shows four six Sailplane pins available Gary Anderson American Sailplane Designs clock wise top Schweizer 1-26 2-33 LS-1 Schweizer 2-32 Also available Grob 103 Twin Astir ASW-20 really finequality enameled pins would look great hat tie lapel include good springloaded fastener stamped brass kind price $5 plus $150 per order postage ASDs address 2626 Coronado Ave #89 San Diego CA 92154 youre send along extra $3 Garys very interesting catalog Sailplane kits made good ol US Youll likely surprised number unusual planes available ASD High-tech Sailplane constructiQn Martin Bamerts article September column wing molding sparked lot correspondence builders modern types 164 Model Aviation COMPOSITE MA TERIALS CARBON FIBER LAMINATES CARBON & KEVLAR MATS KEWAR/GRAPHITE FABRICS 68 ozi sq IL GLASS CLOTH CARBON & KEVLAR TAPES CARBON FIBER RIBBON GLASS FOAM PANELS GLASS END GRAIN BALSA PANELS CARBON FIBER END GRAIN BALSA PANELS BRAIDED CARBON CORD B74 CARBON FIBER FLEX PLATES SAFETPOXY Epoxy LarnInIng ResIn Send SASE complete listing products Aerospace Composite Products PO Box 16021 livIns CA 714 250-1107 TWO NEW FLIGHT BOXES Consplefely assenbled linished Made USA SnIb top quality wood construction Two large drawers Unique drawer locks Onrall son 0 plus shipping Large boo $12500 plus shipping includes fuel compartmenfbafterypownr panel comparfmnofadjustable fuselage cradins Manep back goarantee send si specs call 1415 3837730 Inaso message Flights Fancy eramude fin S P0 Sna La Honda Ca 94020 TRAINERFOAMAIREMONARCH SPAN IA fl95 SPAN AN EIGHT 19-22 lbs 3CHWEIGHT 5WEIGHT 2 IA95 POWER 0 ER 0$69 POWER 3 4 CHANNEL 4CH 164~FOUR CHANNELFOUR CHANNEL CALL OR WRITE FOR FREE INFO,ART 1 NEODESHA KS 66757 ON SAC KITS AND QUADRA PRICES 3252821 FREE SHIPPING ON KIT ORDERMASTERCARD ACCEPTED construction Keith Kindrick Glendora CA has making wings using vacuum bag technique Keith works closely Craig Foxgord jointly developed se ries FK planes Keith also compares notes Joe Wurts has done great deal bagging thought readers would interested what Keith has say about making glass foam wings Keiths letter Ive making carbon composite spars mold wings typical wing might use 010 x 0375-in top spar 0035 x 0375in bottom spar channel out 0375-in-wide grooves foam core using sanding block straightedge spars seat flush surface next step pulling vacuum glass-fiber-and-epoxy wing skins last time Joe came over 1150 outside epoxy sets quite fast temperature Joe has also worked heat thought funny watching trying get everything set before epoxy went oft2 Joe agree thing though can run calculations day wings strength dont really know works until plane test flown big pain neck because tend overbuild wings dont break weight wing loadings higher need big con cern because wed like have advantage lightness thermal contests Glass fiber construction will give both us ability use 100% winch power avail able Aerodynamics preaching what can called optimum levels because aecurate smoother wings Once have flown glass wing very hard go back wood Both us agree important concept type construction may heavier build materials get 100% airfoils designed lift drag coefficientswhich theory will offset weight better wing should able take advantage same light lift balsa wing though wing heavier trick make compromise among factors construction aerodynamics achieve good wing still light possi ble what frustrating Joe myself cause realize much easier balsa Lower weight allows get away lower-camber sections 2% still able thermal reason have chosen Ep pler 387 its 37% camber higher camber low profile drag 91% thick hope average out performance normal Ther mal Duration contests Ill let know works out As actual construction FK-l0s 170-in wing center panels use layer 60-oz unidirectional 30-oz bidi rectional glass 30 outside 60 side uni fibers oriented spanwise par allel length wing impor tant because uni acts part spar tips use two layers 30 bidirectional glass tal weight 84 oz cores cut 2-lb blue styro foam thing use no real advantage using white 1-lb foam because weight difference small matter higher-density foam stronger does crush during vacuum begging like 1lb stuff does airfoil Eppler 374 full-span no washout have looking possibility cut ting cores others have large library airfoils people supply least copy section want can enlarge re duce Enclosed list prices feel fair compared what others have asking am also process making up list materials necessary bagging have lots glass epoxy Mylar can share others small quantities reasonable cost way can catch up Europeans get people trying new meth ods Id like help get started copy Keiths wing-core price list Straight panel 100-in spanone $50 two sets $40 three sets $30 Three- four-panel 100-in spanone $60 two sets $50 three sets $40 Straight panel two-meter spanone $40 two sets $30 Three- four-panel two-meter spanOne $50 two sets $40 Three- four-panel Open class 100-in 170in spanone $80 two sets $70 UPS shipping will vary depending distance Best thing get touch Keith arrange exact prices delivery Keiths address 431 N Marcile Ave Glendora CA 91740 tele phone 818 963-5352 LSF news recent announcement League Silent Flight contained two interesting items First LSF has its first non-American Level V member Mal Pring Valley View South Australia became 62nd per son achieve Level V Mal worked al six years finished up 8-hour slope flight January 1988 Congratulations Poreer Anderson Products Inc Only certil led checks noney orders accepted Mininun order gixee three packages 4 Powercoles t53 hOper package S 150 shippwg handling CT residents add 75% sales tan Prices sabject change sithoat retice DEALER INOJIRSjS INVITED forthe info,nalion deale ceo send SASS Bosiness Card SERMOS RIC SNAP CONNECTORS0 Clar Com01 31*1011 Box 16787 Slamftxd CT 905 203322-6294 January 1989 165 MK 231 OR PFM 3200 Mooney 1/5th SCALE SEMI-KIT WAYNE SIEWERT RADIOAMA NATh1st PLACE WINNER kI 4-6 CHANNEL1988 NATS EXPERT ENGINEjjjJ PORSCHE FI7TEO MOONEY 90-1082 CYCLE 120-4 CYCLE SPAN 88 AREA 990SQIN WEIGHT 12-15# Fiberglass Cowlings Windshield Tip Lenses Plastic Elevator & Rudder Surfaces Rolled Plans Scale Documentation Full Instructions Scale Spinner WAYNE SIEWERT 2837 18th Ave So. MPLS MN 55407 USA 6127227564 Mal second item might considered slightly bizarrethe first Double Level V Bob Chainpine Newport News VA completed Level V some time ago enjoyed much decided again LSF permission Bob started over again completed Level No 2 January 1985 Finishing up second Level V took over three-and-a-half years being com pleted August 1988 Bob certainly con gratulated accomplishing something twice us cant once Competition Products foam wings Last month Ed Bertons description foam wing cores Full-Size construction saddles month Ed continues telling us about using ep oxy attach balsa skins cores Eds letter Most wings have done 3M No 77 spray adhesive think 3M tape stronger get shot aligning skins core misalign skin its over almost impossible separate two used epoxy set Windsong wings Im now flying epoxy very thinmixed 31 ratioand available Fiberglass Coat ings 813 822-3689 costs about $8 per quart called 204LV used about 114 oz per skin about 5 oz total both wings apply epoxy onepiece skins 3-in-sq piece / plywood used squeegee allows applying very coating point have very thin coat epoxy has started soak balsa skin next apply some epoxy leading trailing edges core swath about 34-in wide Before skin applied core take 3-in foam paint roller go over skin can add epoxy skin roll can fill roller epoxy apply skin foam-roller procedure important because 1 epoxy applied 1/ ply very thin absorbed balsa skin applied core stage could areas poor bondingor no bonding 2 epoxy applied brush can uneven and/or thick 3 Using foam roller allows epoxy applied ply squeegee soak skin epoxy applied roller raised maldng possible good bond core Incidentally have found Sig-Bond aliphatic resin glue very good joining balsa sheets making one-piece skins strong will show joint lines after covering may recall Competition Products has unique capability cutting foam cores up 72 longand perfect quality too So need cores size Id suggest getting touch Ed 921 Birdie Way Apollo Beach FL 33570 phone 813 645-5171 rmt club newsletters receive Silent Flyer South Bay Soaring Society edited John Dvorak recent feature has series articles Patrick Kelly called Pilots Logbook Patrick wrote such good piece Glider trimming thought should borrow share readers times have seen someone add remove little nose weight trim level flight Did know real reason moving CU center-of-gravity should change stability plane trim neither until just recently suspect lot others like makes sensemoving CU change trimbecause have retrim move CU right Well yes no primary reason carefully positioning CG control pitch stability CG nor mally located ahead wings center pres sure lift balanced downward lift horizontal stabilizer youve seen toy consists man holding barbells curve downward keep CG below bal ance point have general idea case plane CU moment downward lift stab must balance around lift point plane fly level As CU moved farther forward center-of-pressure CP exerts force takes greater stab incidence down-force bal ance also takes force read control movement alter pitch thus plane has static stability As CU moved back nose weight removed converse trueuntil CU same point CP stability neutral point stabi lizer incidence must set give zero lift CU moved farther back plane will become unstable As can see moving CU af fects well controls respond Proper trim ming procedure set CU control sensitivity like set incidence level flight Using elevator trim no substitute changing incidence entire surface because offset trim creates added drag advantage all-flying stab entire surface trimmed BB sharp-eyed readers may have noticed 166 Model Aviation MORE INFO SEND 5ASE Stainless Steel #11 Blades Carbon Steel -$895 per 100 Stainless -$1485 per 100 Delivered Check MO Visa MC Satisfaction Guaranteed Berkeley Trading Co PO Box 25 Berkeley Springs WV 25411 y304 258-2773 AMA Logo Ring S Approved ACADEMY OF MODEL AERONAUTICS Rings cast SOiid 10K Cold Price $16000 pius $250 Shipping Ordering lnntructions Send Check Money Order Name Address Ring size AMA No NAYCO Co BOa 21 Stratford NJ 08084 Please alive 4 toO weeks iv delvnry Naw Jesey residents add 6% tao Control Line Products Modeists serui t Modelers ohin Frend login*gdjastabie Rudder turns ~Caetral flaresCanirnl Lines 4 Heavy Daty Beiicraeks*ffandies bAdiastableteadnottaides*tlassic Kits ~Custnm Mviii Mounts Ond much mach ante tiuninuni Inserts tN5tRPgSStD IttlittCttRANtttDtttISFttTiOIi Send name address aed $110 receive ear new eapanded catalet will let $200 ott poor hint order Crotinmon Models inc i3ii E 610 WwwiOw irdoin ddOld denier inquiries incited THE CAMANO IS BACK Serious contest flyers finally discovering CAMANO sportysized gliders what LOVESONG open class has winning major con tests flown pilots such Steve Brad Clasen Jim Thomas C7AMANO now better ever featuring new computer drawn plans glassed flaps AFAR T mLxing system etc Send 2 stamps copy complete catalog championship multichanne l gliders IDODUSON DESIGNS 21230 Damson Rd Bothe 11 WA 98021 2067768067 use term static stability two kinds stability static dynamic pur poses static refers initial reaction plane after control input raise nose plane has static stability nose should drop release neutralize elevator control has neutral stability nose should re main left should continue rise probably rapidly plane unstable Dynamic stability refers oscillations occur statically stable plane raise nose let drop will drop past orig inal attitude will rise go past again dynamically stable plane will exhibit de creasing oscillations neutrally stable plane will maintain os cillations forever An unstable plane will exhibit oscillations getting worse worse until swooping bottom stalling top oscilla tions Dynamic stability nice am concentrat ing static stability moment Raising nose good test static stability because stable plane will drop its nosebut will unstable after rising stall left decide has occurred However shal low dive revealing maneuver stable plane will raise its nose after releasing Down stick An unstable will tuck dive Sound famil iar Now know dive test works what looking can hope will now better able trim plane course still have de cide much stability right hey Thats what makes hobby fun Richland Slope Scale Fun-Fly correction October column photos taken First An nual Scale Slope Fun-Fly SG-38 Primary Glider identified belonging Tony Palethorpe actually Erik Eiches Vancouver BC Erik has ill good see note him Northwest SS newsletter thanking friends getwell wishes saying things go according plan should back first contest 89 flying season Good going Erik Just give little advance info 89 Scale Slope Fun-Fly Wil Byers says planning four days hope attract foreign fliers making truly international event So Scale enthusiasts should plan spend end May State Washington RC Pylon Racing/Hager Continued page 50 great nice touch race meet Sunday racing went about same Sat urday Q500 competition very very close anybodys race between top five people going fast matter going make mistakes might push back standings green batch workers fliers few complaints guys did great job talk having combined Canadian/USA meet Chester next year right middle Prairie district North Central West district has possibilities attract ing 30 40 fliers F-I hope comes through Results July 9 1988 1 L Elbertl27 2 J Davidsonl41 3 M Sperry131 4 R Spicherl36 5 C Swaneyl42 Results July 10 1988 1 L Elbert122 2 D Tulbergl33 3 M Sperry123 4 D Cady132 5 R Spicherl41 Next well go Puget Sound Northwest Race Report Pylon Racers Puget Sound August 6-7 1988 Kitsap County Area Radio Control Society ARCS Props hosted first annual Sum mer Classic Pylon Race unused portion Kitsap Airport absolutely great place flywell al Two green wails bordered course big trees about 300-400 ft away cases caused everybody fly tight made closer races great help local club provided looks like great racing site some years come Saturday some new some old fac es come out race again Old-timers Nel son Eddy Dean King Newcomers Jer ret Cangie Jim Hursh Phil Bames Jon Cas tlemen addition regulars three local ARCS members try Q500 Phil Barnes Jim Hursh Jon Castleman didnt too badiy considering never raced before Unfortunately Phil Barnes found trees Saturday dont know trees gave back though district fly Q500 round between F-I round give 10-12 F-I fliers some fixing time Some fliers choose fly both Q500 F-I Take Nelson youre-in-the-next-heat Eddy example Quickie 11 entries Saturday three Sunday due some attrition Satur day Newcomer Jerret Cangie brought out new hobby-town edge tried hone asphalt between #2 #3 Well least walked away Better luck next race Jerret Saturdays Q500 results 1 Nelson Eddy 13980 2 Adam Darr20l69 3 Jon Pack erl5813 4 Joe Harris20214 5 John Er ickson2 1999 Formula Northwest coming gether races tossup will win Everybody getting better faster Chuck Eads Oregon lost another around pylon #3 Don Rice myself wing-tip-to-wing-tip 10 laps went down under #3 pylon stay ahead Don last IENDURANCE RUBBER MODELSA 2 CaPTORSTHE EASY B31M5 Gliders IS Span U 18 Spanv 122f95 - 0 E SLOWPOKE 16 Span2 Yard B rds P c h2Pennys$595 P op 2 Span P sac P opA arlor PlanesThe Nov Ce Penny Plane y M 22 KORDA MBRYO20 EMBRYO SPORT $8500 SanSpan $850 OUTSTANDING DETAILS 3-VIEWS & HISTORY 0 I AAERONCA K 1937A ALCO SPORT 1929 WATERMAN RACER 1921 U ZIPPY SPORT ARVHEATH PARASOL 1928 VRON WILLIAMS BOOK ON 5 $825 INDOOR MODEL AIRPLANES $1595 ABALSA PACK $825 P-NUT PACK $825A TISSUE 10 Ige Scot roll ... $695 CONDENSER PAPER 216325 MICROLITE $325U LUBE $195BALSACEMENT$195E yTHRUST BEARINGS Mini Dual Dual. $100y IRUBBER 025 090 005 inc & 3/16 $265 61 WINDER $595 161 MARK 1 $1295 WE STOCK PECK RIN & BROWN A-23 CO ADD 10% POSTAGEMINIMUM POSTAGE $200 U NEW 18-PAGE ILLUST CATALOG $200 January 1989 167 responding advertisers mention read about ModelAviation