5 1NEW Control Systems Laboratories ATRCS Airtronics Module SP good RC system very popular Sailplane fliers What would think someone told could transform SP equal sophisticated radio worldfor $300 think lot people would jump chance Granted rudder-steered polyhedral planes dont need high-tech set hut fliers planes hav ing ailerons flaps ability kinds tricks reasonable price will wel comed people Control Systems Laboratories will performs miracles Eugene En gelau Thomas Mroz formed CSL manufacture install retrofit computer elec tromes will turn old pumpkin Rolls Royce first PC boards SP radio mods other radios will added shortly Gene Tom both members South Bay Soaring Society great news us because understand special needs mod ern Sailplanes call system ATRCS stands Advanced Technology Radio Control System Its pronounced A-Tracks Since computer-on-a-chip business way over head following description copied CSLs introductory flyer microprocessor used ATRCS pow erful low-power-consuming no additional batteries required 16-MHz 16-bit-wide-bus cal culating machine characteristics translate computational power four times greater similar system being offered today Calculat ing power such means will never see jitter jumpiness control surfaces never experience delay between time push stick flip switch control surface actually moves ATRCS powerful control system having very comprehensive set features designed RC flying today morrow its features Multiple-setup memory four planes No backup battery required Auto setup Save fea ture avoids setup errors Type-of-plane setup templates Easy setup new planes changes old setups Trim travel adjustments individual sur faces Allows correction servo linkage mis matches Mode definition Allows configure transmitter controls suit own taste Advanced mixing functions Full trailing edge camber adjustment Crow ailerons Up/flaps Down aileron-to-flap flap-to-elevator elevatorto-camber etc Continued page 167 Want know about ATRCS A-Tracks transmitter mod available Control Systems Laboratories Theres lots info Byrons column month Photo depicts display switch board Front memory board front Airtronics 7SP Mod ule transmitter ATRCS allows imaginable kind control mixing control throw limiting trim adjusting etcand can store four different setups No additional batteries required SM Sailplanes 4-meter AS-W 17 fifth-scale model Kits have fiberglass fuselages obechi sheeted foam wings Made USA too SMs products sure look like beauties 54 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Wlnnebago Dr Sedalia CO 80135 Transmitters flip-down front cover allows easy access ATRS liquid crystal display LCD six pushbuttons used set up transmitter anything can think Roland Kerns 23-ft-wingspan Grab Twin Astir sits rest German modeler plans bring 88 Nats some demo flights Theres info column SM Sailpianes Santa Monica CA H-1O1 Salto 1/3-scale Sailplane looks great both ground flight Model spans 44 ters 172 14 4 GRAMCO POCKET PROP Adjustable Returning Toy Quality Hardwoods Left Right Handed Flies Approx 25 yds Illustrated Directions $15 Includes Postage THE GREAT AMERICAN COMEBACK 4554 SUNRISE BLVD DELRAY BEACH FL 33445 ~ TR260 Freud Aerwduik Deaigu 114 Stand-off Scale Kit span Length66 Wing area 1213 sq Weight.. 165 lbs Power035-040 G38-G62 FuE lit $21500 plus shIpping *1100 Everything scratch kit plus precut wood pets contptete mod z *AII wood & foam csnstructlen eFillergIas cowl 6 pants *2plece plug-in wings Foam core airfolled tail surfaces No tail brace wires required FOR MORE INFO ONTO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Luke IA 5136 DELUXE Kit $28500 plus shIpping $1100 Everything tel kit bat stag spars lestafled wingS stab turtle deck hatch & fin tee-abteneti stilt illS haha MAKES DUILfhst QUICK 115 SCALE 4ISTR ENG WACO HKS -777812-4/STR GREAT LAKES TR6490-4/STR GREAT LAKES SPL 6490-4/STR PLANS 0 / PG COWL 0 / ECONO PAC 0 14 GIANT SCALE BIG ENG WACO HKS -79975 25-4 ENG GREAT LAKESTR80 20-3 ENG GREAT LAKES SPL 80 20-3 ENG PLANS 0 IFS COWL 0/PS PANTS 0 ECONO-PAC 0 / GREAT LAKES 0 114 SCALE FARMAN MOUSTIQUE 80 45- 604/STRPLAN 0 * 2 RIC ANTIQUE MODELS * BILL WINTERS ROOKIE72 span45 4/STR DEBOLTS LIVE WIRE TRAINER 25% -60 span 25 2/STR -40 4/STR S 0 ea ADO $300 S & H CONT us 10 SASE tNFO NORMAN ROSENSTOCK 124 GRANADA ST ROYAL PALM BEACH FL 33411 August 1988 55 R ECI YOUR EYES IN COMFORT WI IN NFORDA3LE HANDSOME vision tmportant sense high-quality scratch resistant polycarbonate lens safety glasses must modelers Available clear gray dark green light green gradient mirrored gray lens Adjustable temples Wide view ANSI Z87 approved GREAT PRICES Iwant protect eyes style comfort U Clear-$725 eaL Gray$855 ew U Lt Green$855 ea UDk Green-$855ea UGradientMirmr-$lOSOea NAME ADDRESS cnYsrxiyztp Send check money order C&C Enterprises 141 Willa Dr Columbia SC 29209 SC Residents add 5% Sales Tax lius shipping $1100 Cowl pasta campy landing gear daet Inner cores ler shrg tail naufaces turtle deck hatch A monthly publication Covering International RC Soaring Scene US $17 yr 21/yr 1st Class In Canada/Moxlco $22/yr US funds Asia & Pacific $28/yr US funds Europe UK $28/yr US funds Surfaco Mail Foreign $18/yr USfunds RC SOARING DIGEST PO Box 1079 Payson AZ 85547 airplane will roll same direction same speed upright upside down 0-g dive true because roll moment generated equal opposite changes angle attack left wing right Within wings unstalled range angle tack change lift per change angle attack approximately constant cause change matters base angle attack important Note also because equal opposite change yawing airplane will cause change total lift gener ated nice feature able roll thermal having simultane ously compensate pitch However air planes high rates yaw roll possibility gyroscopic coupling yaw roll axes yielding unex pected pitch-up response due gyroscopic precession problem coordi nated aileron aircraft since axis being spun time Swept-wing arrangements couple yaw roll much like dihedral doesbut some important differences yawed swept wing generates roll moment differ ence effective length wings wings still produce roughly same amount lift since have same area roughly same angle attack wing longer other has leverage means roll moment swept wing related to tal lift being produced yaw angle plane yawed 1 g roll mo ment will same independent speed pulling three gravities roll moment will three times great 0-g dive no roll mo ment upside down 1 g roll moment reversed Radio Con trol pure swept-wing model dihe dral ailerons will very tricky air plane fly well swept-wing airplanes ailerons emphasis rudder coordina tion will prevent unexpected responses Summary conclusions dihedral arrangement crucial handling roll axis Dihedral provides coupling between yaw roll roughly proportional Equivalent Dihedral Angle EDA yaw angle rolling moment wing can com puted based its dihedral arrangement yaw angle airspeed wingspan wing area planform Different dihedral arrangements have same roll moment otherwise equal V-dihedral wing said have Equivalent Dihedral Angle equal dihedral angle V-dihedral wing Equivalent Dihedral Angle given dihedral arrangement may easily calcu lated Various dihedral arrangements have anal ogies aileron arrangements Transitional maneuvers weak point rudder-and-elevator airplanes Generous dihedral long tail moment arm large verti Step future AVIATION Become Aviation Electronics Technician learn repair maintain electronic equipment used aboard aircraft Actual planes used training Hangar runway campus Train just 19 months Jobs waiting CALL NOW 1-800-758-5757 CLOVER PARK Vocational Technical Institute 4500 Steilacoom Blvd SW Tacoma WA 98499-4098 FAA Repair Station #4466 cal stabilizer lightweight wing tip pan els tail group minimize transitional shortcomings roll moment dihedral wing dependent overall angle attack Swept wings behave quite differently dihedral wings RC Soaring/Blakeslee Continued page 54 Adjustable preset trims Launch Cruise Speed Simple switch-selection simplifies pilots work during critical launch sequences In-flight setup changing Switch planes config uration on-the-fly try Out new adjustments enhance performance during particular events Landing position flap threshold selection Al lows set trip-point triggers aile ron spoiler deployment Works Airtronics FM/PPM FM/PCM receivers Initially Module 7SP Other brands added deal contact CSL make reserva tion have transmitter converted will send shipping kit sending transmitter work takes about 10 days ATRCS-modified transmitter re turned users manual explains program using examples illustrations Dur ing setup sequence asked inputs through menu-style prompts Special program features arc designed help enter correct information prevent accidental loss set ups Full information available fmm CSL 1361 Fallen Leaf Dr Milpitas CA 95035 can call 408 946-4142 SM Sailplanes Vince Parizek produces limited number Sailplane mostly Scale kits Kits may best word describe since Vinces planes appear pretty completely fin ished Lets have Vince tell us about himself well get specs two big Scale Sallplanes Just let know about background have involved RC Gliders years have building own Gliders quite some time grew up Europe became interested Scale Glid ers Since arriving States 1968 found basically no Scale ships made concerned however because could purchased Germany past few years drop dollar has put price out reach average modeler So decided offer experience Scale enthusiasts reasonable prices Because still hobby make kit myself production low waiting list stands about four weeks SMs two Scale ships Start & Flug H101 Salto 44-meters wingspan fourmeter Schleicher AS-W 17 Both have white gel coat epoxy glass fuselages foam wings sheeted obechi wood wings have ply wood spars plus carbon fiber reinforcement Aile ron spoiler areas reinforced twoounce glass cloth Tail surfaces also obechi covered foam Individual specs Salto fuselage 67in long wing area 1140 sq weight 85 lb wing loading 16-18 oz per sq ft airfoil modified Ritz II AS-W 17 specs include fuselage 59-in long wing area 1020 sq weight seven pounds wing loading 14 oz per sq ft airfoil modified Ritz III Both planes available basic com plete kit explained easily listing what complete kit gives leading edges wing tips installed shaped precut aile rons spoilers installed precut plywood pieces radio installation set decals Salto complete kit includes wheel basic complete kits AS-W 17 $289 $385 respectively Salto kits $425 $515 full-size AS-W 17 has 20-meter span model / scale Seventeen has enormously popular subject modelers H101 Salto much rarer subject Its maker offshoot Glasfiugel factory first flew 1971 wings Standard August 1988 167 Libellebut shortened 136 meters 44meter model thus /3 scale Salto German word loop can imagine fully stressed aerobatics model certainly looks lovely air Its best contact Vince further details exact ordering information address 2703 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 828-2300 Want see 23-ft-span Sailplane Remember giant Grob Twin Astir Scale Sailplane featured December column beauty made Roland Kern Roke Modelle kits Wannweil FR Germany Well Tony Arnoux Miami FL Roke importer says Roland planning attend AMA Nats Vir ginia will put up some demonstration flights Twin Astir flights expected Soaring site either before after days competition flying should really tract crowd Roland also plans enter Scale competition normal -sized planes four-meter ASK-18 Multiplex lend ing Roland radios US frequencies can fly both planes Mr Kern will taldng orders Twin Astir kitsfor about $2500 News Paris FAI/CIAM meeting John Grigg chairman ClAM F3B Subcommit tee passed along two important pieces news April meeting 1 New rules limat winch power 2 1989 F3B World Champion ships will France4Okm south Paris new winch rules set minimum internal re sistance values both winch motor battery 15 six milliohms respectively stalled-winch condition winch does meet minimums permanent fixed resistance must installed minimums will limit winch power about 16kw line pull 40kg less weak-link rule dropped new rule adopted immediately safety rea sons John said internal-resistance idea came Czech subcommittee representative Two-time World Champion Rolf Decker built recording volt-ohmmeter demonstrated subeommittec Paris winch must al lowed start must stalled quickiy less revolution RoIf did piece rope wrapped around drum ohmmeter must read resistance quickiy before heat builds up meters resistors increases readings World Champs other contests matter organizers will need test winch motor battery set seal resist ances nothing can altered US F3B final ists will need measure adjust winches L WANNA RACE MORTHFAT ARFA L BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs leformatioh Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVE FRANKLIN MASS 02038 Tel 617 528-4043 203 673 -2000 before finals Schematics test apparatus will made available ASAP word 16kw power standard Ford starter motor commonly used US can produce less power souped-up Fords US team used Achmer last year Stock Ford motors said have internal resistance 18-19 milliohms John said goal eventually get winch power down 11kw new rule appears workable solu tion very difficult problem F3B competition will much better LSF news League Silent Flights new ficers President Bob Steele Fort Wayne IN Vice-president Ray Hayes Romeo MI Secretary Jim Martin Xenia OH Treasurer Susie Lipp Defiance OH LSFs first order business get ac tive members mailing list An active mem ber has communicated LSF last two years sent voucher Level IV V current address dont fit either categories wish stay mailing list drop card LSF PO Box 647 Mundelein IL 60060 USA request ac tive status new 1SF officers asking Soaring clubs around country consider holding LSF re gional contest August September 1988 would like see 15-20 regional contests held Some already scheduled club interested just write call Ray Hayes 69598 Brookhill Dr Romeo MI 48065 phone number 313 752-6163 information first-rate contests well-attended because prior national publicity highly prized LSF plaques presented winners Both club 1SF make money winners regionals will invited 1989 LSF Internats tentatively scheduled Uti ca MI mid-August new Executive board dedicated revi talizing LSF helping restore spirit RC Soaring USA anything can help let know can help sending postcard cur rent addresstoday NSS news 1988 National Soaring Society Excellence Award Program EAP being run Sailplane editor Doug Dorton Scoring same last year cards distributed members sent EAP cards last year NSS member would like give program gobut didnt receive cardsdrop note Doug 3058 Bernina Dr Salt Lake City UT 84118 can call him 801 966matcnua rurrormance y5Iem TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS OBlendo4Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS 1625 way EAP works contests March through November meet simple cri teria have least 10 contestants score respect winners score earns certain number points member accumulates points over six contests wins need fill out card after contest have CD sign mail Doug nice merchandise prizes won theres no reason members shouldnt have try Sources materials John Wyss report making Kevlar fuselages whieh appeared June 1988 column mentioned gets Key lar Safe-T-Poxy George Span Aero space Composites Actually George handies sorts high-tech materials can check him needs PO Box 16621 Irvine CA 92714 Anyway mention Aerospace reminded recently saw list sources various specialized materials Marshall Longs Texas Soaring Conference Magazine As public service Ill reprint Marshalls list along very brief rundown what compa nies known Bob Sealy s Quality Fiberglass 521 96th Lane NE Blame MN 55434 Telephone 612 7802737 Bob makes several types fuselages Slope Thermal Cross-Country Sailplanes along foam wing cores Bob will cut type foam core wing profile person 10 FT B-17 PLANS $3500 3 CATALOGS 5900 THE BEST iN SCALE HOLMAN PO BOX 741 SAN BERNARDINO CA 92402 Send SSAE catalog iheet complete line KIlL RhBX$100 RIOOE catalog MACHINERY& TOOLS P0 Boo 536Y 3044623530 Hurricane Wr/ 25526 coffer complete selection lathes mills end tools viation Modeler 168 Model Aviation RADIO SOUTH K4C AUTHORIZED SERVICE CENTER Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Radio South Batteries 500 ma Pack 48V1100 Futaba conn1350 800 ma Pack 48V1950 Futaba conn2275 1200 ma Pack 48V2100 Futaba conn2425 TX batt Futaba G-Series PCM2450 Featuring fast service j~$ qualified peeple t latest equipment Including SPECTRUM ANAL YZER FREQUENCY CONVERSIONS AM4 Frequency Comnunee Approved TVA1 LAML~I We stock Futaba JR radios YS engines parts Hatori headers pipes Repair Heli Sets Gyros Orders COD MC American Express Pricessu blect change noticeOPEN 8-5 CST904 478-6745 %........ 43 West Nine Mile Rd Pensacola FL 32514 provide templates him use Cores white foam will have spar slots cut out Bob now making Bob Dodgsons hi selages epoxy/glassand doing beautiful job Viking Models USA 2026 Spring Lake Dr Martinez CA 94553 Telephone 415 6890766 Jerry Slates has very large selection fi bergiass fuselages choose including five Scale types catalog shows pictures fu selages available gives wing profile approximate wingspan can used Cliff Ol iver San Antonio bought Jerrys fuse lages called Contestant beautiful piece workmanship 53 long can carry wingspan up 148 E-205 profile kit comes clear canopy top tray Cliff will use Cross-Country ship September Corpus Christi 20K closed-course X C meet Wilshire Model Center 2836 Santa Monica Blvd Santa Monica CA 90404 Telephone 213 828-9362 Bob Ratzlaff recently purchased Wilshire Maddy Weiss determined keep up standards established Maddy late husband Hans Wilshire has special Sasiplanes-only catalog full kits kinds neat not-always-easy-to-find accessories scratch-builder possible order kit priced anything $30 $2000if wallet big eyes SR Batteries Box 287 Bellport NY 11713 Telephone 516 286-0079 company has offer just batteries although its main effort example carries Deans con nectors maldng own battery leads changing over servos own type equip ment An interesting item SR Piggy Back transmitter pack important person going record flight working higher LSF levels fly Electrics SR handles Ace RIC chargers Heavy Duty Digipace cyclers latter being made specially SR Batteries Aircraft Spruce Specialty Co PO Box 424 201 West Truslow Ave Fullerton CA 92632 Telephone 800 824-1930 Aircraft Spruce supplier full-size aircraft builders items sells interest modelers catalog outstanding Youll find sorts cloth resin tools aircraft construction Cadillac Plastics Houston TX Telephone 713 674-2400 See local storeBB Cadillac sells lot different items including 14-mil lar covering fiberglass surfacing vacuum-bag wing construction technique Vacu um pumps can purchased hardware stores dont come cheap purchased new Hobby Woods PO Box 48 Linden CA 95236 Telephone 209 887-3974 Marshall Long didnt include Hobby Woods list taking editorial license Id like add because excellent service quality balsa Ive gotten over years scratchbuilder try 11W balsa needs Gougeon Brothers PO Box X908 Bay City MI 48707 Telephone 517 684-7286 other company Marshalls listI noticed Gougeon Brothers mentioned Gordon Stratton Eastern Soaring Lines newsletter seems though should included GB primarily supplier fiberglass boatbuilding industry source West Sys tem epoxy 105 resin 205/206 hardener 301 vacuum pump epoxy dispensers fiberglass cloth carbon fiber Progress Princeton low-Reynoldsnumber airfoil tests repotted Michael Selig John Donovan stage have instrumentation support equipment run experiments lift model will measured spe cially designed one-component force balance drag will measured wake rake method will involve traversing airfoil wake single miniature total-head-pressure probe Other measurements will include gle attack free-stream dynamic pressure static pressure upstream downstream model quantities well oth ers will digitized through 12-bit A/D con verter connected IBM PC/XT data stor age analysis thorough description experimental apparatus procedure will given Soartech following experiments Sometime February plan begin stalling system wind tunnel have successful predicting work tests will begin end however clear experiments will have finished August 1988 because Michael finished Prince ton last August John will finish August have 12 wind tunnel models built seven currently under construction Clark-Y Stan Watson IL E193 Stan Koch TN E214 Terry Luckenbach PA S4061 E387 Forrest Miller NJ E387 S3021 S4233 Bob Cham pine VA MB253515 Mike Bame Jerry Krainock CA WB 135/35 WB 140/35 Woody Blanchard VA S2091 Dave Jones Bruce Baker Mike Chiddick Roger Egginton Lea Roger England 54061 Mark Allen CA E205 Dave Batey Co WI HQ 15/90 RoIf Girsberger Co Switzerland HQ 25/90 Ray Olsen Co AZ S4064 Stan Watson IL FXlO-100 Rich Border NJ have duplicates some airfoils can check possible degree performance variability between different models After start testing some models still plan design new airfoils have built tested Given have until end AuContinued page 172 5151JET SERIESThe Proud Bird theProd Bird planes feature balsadesigned meet construction Designed wIth thegsPRA rorela -scale model 111 accept intermediate flyer mind will120 ralesT5is 1/4 terill jet accept 2125 size engineuse60120 ci sIze engines rear exhaust engine ex ceptional performamceDet allEpOap glass faselagewIth foam wing construction full kIt $15111 Inc hassles darted fanSkyhaaxSemikit also avaIlable Ins wood $12511 SpecIal IntrodaPlease add $1101 shipping handling $411 flu Pen Sent check MDadd 6% sales tax -or Mastercard Visa -110 add $3013g5S54477 PARRISH AiRCRAFT Top Surkpy ot waxets formula ODart Experimental 255W49thTe, $9500 x $5 SIPTipersharktwoplace full sloe aircraft amlatiam Pta 33315 August 1988 169 No 593 Taylorcraft $1000 RO Sport Scale lightplane builds standard two-placer clippedwing air show stunter Span 70 58 30140 two-stroke 40/48 four-stroke engine Two plan sheets no documentation No 594 P-61 Black Widow $800 CL Profile Scale WW II twin-engine night fighter uses 19/25 engines spans 491/2 No 193Stiletto CL Saint model McDonald winner 1076 1980 1982 FAI World Champs$ 375 No 239Blue Birds AC Ken Willards formation plane 4-channel 10115 power$ 375 No 262chmaster CL Crash-prasf trainer two sizes15/30 35/40 pnwer$ 125 No 3101930 Fleet BIplane AC Sport Scale far 35/40 4-channel Wingspan Sit scale Two sheets5 625 No 314Drake II RC Ken Willards tying boat 3-channel 15-power Fly land wifh mmovable gear$375 No 326Taylor cub AC Don Sn/Is Schoelyard-Scale 0495 2-3 channel Spans 50 inS350 No 332Zephyr AC Small 2-channel gilder fer hood-Isanch 010w thermal slope soaneg5 200 No 386Laser 200 AC Sport Scale mplica championship Aerohahc filer Uses 40 power 4-5 channel Two sheets51075 No 414ElectrIc Sparky RC Elecfric fan filer 05 motor 3-channel RC scaled-up 1939 rahber-power favorite$050 No 440cavalIer AC Old-Timer-like new design has huge wing slow easy flights Par 35 pwr 3 ch Two sheets$1725 No 4471/2A Miss America AC Old-Timer Texaco model 040 glow 2-channels$650 No 454Sweet P-30 FF Neat stick-and-dense Qatrisor gabber P-30-clans model a contest-wusner$200 No 457Spectra AC Electric-power ts 06-sloe motor ones 3 different wings sport searing aembaSco5700 No 4604-40 AC Shnelder-wing sport filer 4-cycle 40-size engine 4 channels$650 No 465Blue Max II AC Fan-fly sportater tsr 40-sire engines spans 52 Lightweight stractum$700 No 478Buttercup AC Cute nOun sportster uses micra 2-ch AC pulse-insider Spans 27 0201035 power$300 No 490Weekender AC Low-wing sport tier 20-ode 4-stroke engine spans 47 in$575 No 506Playmate AC Sport filer 3 RC channels 10125-one engines spans 50 in$650 No 512Extra 230 AC Giant Scale acrahatic plane spans 8 ones Quadra engine Two plan sheets$1650 No 514Henry T AC Sportster tor IsA 2-3 channel 00 spans 52 han adlastable wing flapsS475 No 521Comet Jr clipper Plus 35% AC Old-Timer sporaiter leA engine 2-nh AC spans 40 0 No 522Sorts Pitta AC Reminder-scale bipo far 40160 engines spons 43 Two plan sheets$1050 No 525NI-Tech 2002 00 Canard ducted-fan far 45 engines spans 39 Two sheets$1000 No 528Swallow AC Lightweight holdegger 40-size four-stroke engines spans SB in$025 No 531TerrIble Coupe PF Aubber-powerad Coope driloer spans 40 contest-winner$475 No 533Cessna C-37 AC Schoolyard Scale famoas 305 plane 049110 power 2-ch spans 42 in$500 No 5341938 Challenger AC Texaco Old-Timer spans 47/o 040 engine 2-channel AC$550 No 535Agrix AC AMA Class 0 Sailplane spain 110 uses 4-channel AC system$725 No 539Simitar Slow-Motion 15 AC Tailless flying wing tar 15 engines spans 60 ones 3-ch AC$350 No 541Parakeet AC Sport hiplane tsr 15125 engines 3-channel AC esfoipment spans 42 in5675 No 544Heron AC 511 Winters sport Electric tsr geamd 075 motor 3 AC ch spans 65 in$575 No 549cricket AC Sport scalelike tor 20-san two- four-strake engine spans 40 in$675 No 554Super Doubler II AC Sport AerobaticsPylon far 40/46 toar-strake engine spans 57 in$575 No 555Double Duty AC Basic/advanced trainer 10115 engines spans either 67 en 50 Two plan sheets$1075 No 559Low Voltage AC Electric-power oporfater fnr 035 motor spans 44 inS475 No 561Wild Ham RC Tri-motar sponster spans 63 ones 25 engines Two plan sheets5900 No 553to AC AMA Class B 2-Meter Sailplane has 703/e-in-spOn toam wing$725 No 565Sea Loon AC Pod-and-hanra seaplane 15 power spans 4W/u in$675 No 568Avro 560 FF Mini-electric Scale 23 British utralight spans 30 in5200 No 569Electroagmak AC Electric aesehatic plane spans 44 uses 00 motor$550 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-balas bout-up surtaces$400 No 571Voyager CL Sorta-Scale A-powemd voodoo amund-the-world plane spans 46/e in$225 No 572TR-260 AC Sport Scale Aesehatic plane 4-steeke 60/65 power spans 60 in$1100 No 573Pink Lady F-40 CL Bill Wisniewokis Fonnala 40 Speedster 40 power spans 27 in$400 No 575Scorpion 60 AC Fun-fly aembaitc plant 60 power spans 501/s in$1150 No 576Serendipltyl ndant EZB racold-helder opens 17% in$325 No 577Halflite CL /sA Combat plane has toem wing spans 30 inS225 No 576Schwelzer 1-268 AC Quarter-scale Sailplane spans 125 Tow plan sheets$1475 No 579Lockheed P438 CL Pmcision Scale WW II fighter far twin 4So spans 55 iv Fowler flaps etc Three plan sheets$1000 No 580Parnall Pixie PP Rubber Scale Gelden Age British biplane 112 scale spans 31/a in$375 No 581Gee Bee Model Y AC Golden Age Aecer spans 72 scale 60 power Thwe plan sheets$1175 No 582Heinkel 100 CL Sport Scale 01W II fighter tor 40 engine spans 61/o otnecaim mostly car/deard Two plan shts$1250 No553Spoetwagon AC Radis-ised sport FF model spans 54 ones 10115 engine$700 No 584Happy Days CL Intermediate trainer/Stunter spans 42 in. uses 20135 engine$575 No 585Dragonfly PP fligh-porfermance P-30 Aahber ship opens 30 iv weighs 50 gramoS400 No 586Snapdragon AC Fan-fly/sporaiter far 25130 engines spans 45 in$600 No 587Pilatus PC-9 CL ProOle Scalelfltunterloportster spans 50 in. ows 29135 engine$550 No 588Malah AC Slope-Searing Sailplane opens 41 ones 2 AC channels5425 No 589Vlckera Weflesley AC Spon Scale WW II bomber spans 00 in. uses 40 4-cycle engine Two p100 sheets no dec$1250 No 590Bud Lite Laser Stunter CL Stoeter le scalelike spain 63 uses 60 engine Two plan sheets$1050 No 591Focke-Wulfi FW 190-A AC Sport Scale 01W II fighter spans 50 in. uses 35145 2-strake engine Twa plan sht no doc$1350 No 592 ET CL trainerlapodster ones 05 electrc power 0-cell bafler5 pack Wingspan 24 in $ 475 Circle numbers plans wish order 193 414 490 531 554 570 579 587 239 440 506 533 555 571 580 588 262 447 512 534 559 572 581 589 310 454 514 535 561 573 582 590 314 457 521 539 563 575 583 591 326 460 522 541 565 576 584 592 332 465 525 544 568 577 585 593 386 478 528 549 569 578 586 594 Plan price inCIUdOS first Class postage US delivery Air Mail over 300 miles ordBrs non-US address lease add $250 Air Mail asIa e handlin Ian Make Check money order payable US funds drawn US bagk Model Aviation c/c AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ AMA No ______________ EJ AM F STREET CITY ZIP RC Soaring/Blakeslee Continued page 169 gust however may abte wanted very thankful large number people have contributed project continue support following excerpt taken last progress report 4-15-87 point entire measurement sys tem has received considerable improvement thanks contributions time money equipment David Fraser Fraser-Volpe Corp PA Professors AJ Smits SH Lam HC Curtiss Princeton University Ray Olsen AZ Professor MD Maughmer Penn State Herk Stokely Soartech MKS Instru ments MA Scientific Solutions Inc OH have also received help lee Murray WI Professor Mark Drela MIT Preben Norhoim Denmark have overwhelming response initial letter asking help building wind tunnel models addition listed above following have also offered build models us Chuck Anderson TN Jerry Arana CA Ken Bates Ken Shaw MI Tony Beck VA Ron Carter UT Jack Cash MD Bart Como TX Seth Dawson Co CA David Fraser Co PA Duane Harris IA Peter Illick CO Harley Michaelis WA Carl Mobs MI Mark Nankivil Co MO Ted Off CA RJ Ostrander NJ Tom Pratt OH Mike Reed CA Joe Rumineki NC Ty son Sawyer NH Gordon Stratton NY Doug Stout NJ Jeff Troy VA Over last several months Jerry Jackson TX Armin Saxer Switzerland Chuck Gris wold CA HJ Rogers OH Brian Smith OH Tom Yamokoski OH Trey Wood AL Karl Widiner CA Todd Enlund LA have helped us either making contributions offer ing build wind tunnel models hope no has left out begin taking measure ments will sure let know Thanks again Everyone knows important experi ments Michael John Im pleased able pass along progress reports ac knowledge Sailplaners helping models other support hear more good reports about existing Selig airfoils further improvements can made im pact model Sailpianes should tremendous Want electrostatic stabilizer October 1987 column description Maynard Hill workings electrostatic stabilizers generated lot interest readers wrote requesting copies Maynards full write-up interested purchasing ready-made sta bilizer may purchase Maynard $174 plus $28 required two polonium io nizers Contact Maynard Aero Probe Technol ogy 2001 Norvale Rd Silver Spring MD 20906 1988 Ohio Cup contests Dayton Area Ther mal Soarers DARTS will host series four contests total fliers best two scores will win Ohio Cup Dates June 1819 August 20-21 Jim Martin 513/376-9046 will CD June contests Gale Lerach 513/429-2543 Jerry Shape 513/843-5085 will CDs August ones Sounds like great idea State wide bragging rights 172 Model Aviation 0 03 0 coo Coo -set o g 513 zo Os es - 00as -2 0 ases n o 2 5 Gac 0 V Ces ens 0 e V 00 oat C 0 SE 8200 00 C n 82 01 C -B 0
Edition: Model Aviation - 1988/08
Page Numbers: 54, 55, 167, 168, 169, 172
5 1NEW Control Systems Laboratories ATRCS Airtronics Module SP good RC system very popular Sailplane fliers What would think someone told could transform SP equal sophisticated radio worldfor $300 think lot people would jump chance Granted rudder-steered polyhedral planes dont need high-tech set hut fliers planes hav ing ailerons flaps ability kinds tricks reasonable price will wel comed people Control Systems Laboratories will performs miracles Eugene En gelau Thomas Mroz formed CSL manufacture install retrofit computer elec tromes will turn old pumpkin Rolls Royce first PC boards SP radio mods other radios will added shortly Gene Tom both members South Bay Soaring Society great news us because understand special needs mod ern Sailplanes call system ATRCS stands Advanced Technology Radio Control System Its pronounced A-Tracks Since computer-on-a-chip business way over head following description copied CSLs introductory flyer microprocessor used ATRCS pow erful low-power-consuming no additional batteries required 16-MHz 16-bit-wide-bus cal culating machine characteristics translate computational power four times greater similar system being offered today Calculat ing power such means will never see jitter jumpiness control surfaces never experience delay between time push stick flip switch control surface actually moves ATRCS powerful control system having very comprehensive set features designed RC flying today morrow its features Multiple-setup memory four planes No backup battery required Auto setup Save fea ture avoids setup errors Type-of-plane setup templates Easy setup new planes changes old setups Trim travel adjustments individual sur faces Allows correction servo linkage mis matches Mode definition Allows configure transmitter controls suit own taste Advanced mixing functions Full trailing edge camber adjustment Crow ailerons Up/flaps Down aileron-to-flap flap-to-elevator elevatorto-camber etc Continued page 167 Want know about ATRCS A-Tracks transmitter mod available Control Systems Laboratories Theres lots info Byrons column month Photo depicts display switch board Front memory board front Airtronics 7SP Mod ule transmitter ATRCS allows imaginable kind control mixing control throw limiting trim adjusting etcand can store four different setups No additional batteries required SM Sailplanes 4-meter AS-W 17 fifth-scale model Kits have fiberglass fuselages obechi sheeted foam wings Made USA too SMs products sure look like beauties 54 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Wlnnebago Dr Sedalia CO 80135 Transmitters flip-down front cover allows easy access ATRS liquid crystal display LCD six pushbuttons used set up transmitter anything can think Roland Kerns 23-ft-wingspan Grab Twin Astir sits rest German modeler plans bring 88 Nats some demo flights Theres info column SM Sailpianes Santa Monica CA H-1O1 Salto 1/3-scale Sailplane looks great both ground flight Model spans 44 ters 172 14 4 GRAMCO POCKET PROP Adjustable Returning Toy Quality Hardwoods Left Right Handed Flies Approx 25 yds Illustrated Directions $15 Includes Postage THE GREAT AMERICAN COMEBACK 4554 SUNRISE BLVD DELRAY BEACH FL 33445 ~ TR260 Freud Aerwduik Deaigu 114 Stand-off Scale Kit span Length66 Wing area 1213 sq Weight.. 165 lbs Power035-040 G38-G62 FuE lit $21500 plus shIpping *1100 Everything scratch kit plus precut wood pets contptete mod z *AII wood & foam csnstructlen eFillergIas cowl 6 pants *2plece plug-in wings Foam core airfolled tail surfaces No tail brace wires required FOR MORE INFO ONTO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Luke IA 5136 DELUXE Kit $28500 plus shIpping $1100 Everything tel kit bat stag spars lestafled wingS stab turtle deck hatch & fin tee-abteneti stilt illS haha MAKES DUILfhst QUICK 115 SCALE 4ISTR ENG WACO HKS -777812-4/STR GREAT LAKES TR6490-4/STR GREAT LAKES SPL 6490-4/STR PLANS 0 / PG COWL 0 / ECONO PAC 0 14 GIANT SCALE BIG ENG WACO HKS -79975 25-4 ENG GREAT LAKESTR80 20-3 ENG GREAT LAKES SPL 80 20-3 ENG PLANS 0 IFS COWL 0/PS PANTS 0 ECONO-PAC 0 / GREAT LAKES 0 114 SCALE FARMAN MOUSTIQUE 80 45- 604/STRPLAN 0 * 2 RIC ANTIQUE MODELS * BILL WINTERS ROOKIE72 span45 4/STR DEBOLTS LIVE WIRE TRAINER 25% -60 span 25 2/STR -40 4/STR S 0 ea ADO $300 S & H CONT us 10 SASE tNFO NORMAN ROSENSTOCK 124 GRANADA ST ROYAL PALM BEACH FL 33411 August 1988 55 R ECI YOUR EYES IN COMFORT WI IN NFORDA3LE HANDSOME vision tmportant sense high-quality scratch resistant polycarbonate lens safety glasses must modelers Available clear gray dark green light green gradient mirrored gray lens Adjustable temples Wide view ANSI Z87 approved GREAT PRICES Iwant protect eyes style comfort U Clear-$725 eaL Gray$855 ew U Lt Green$855 ea UDk Green-$855ea UGradientMirmr-$lOSOea NAME ADDRESS cnYsrxiyztp Send check money order C&C Enterprises 141 Willa Dr Columbia SC 29209 SC Residents add 5% Sales Tax lius shipping $1100 Cowl pasta campy landing gear daet Inner cores ler shrg tail naufaces turtle deck hatch A monthly publication Covering International RC Soaring Scene US $17 yr 21/yr 1st Class In Canada/Moxlco $22/yr US funds Asia & Pacific $28/yr US funds Europe UK $28/yr US funds Surfaco Mail Foreign $18/yr USfunds RC SOARING DIGEST PO Box 1079 Payson AZ 85547 airplane will roll same direction same speed upright upside down 0-g dive true because roll moment generated equal opposite changes angle attack left wing right Within wings unstalled range angle tack change lift per change angle attack approximately constant cause change matters base angle attack important Note also because equal opposite change yawing airplane will cause change total lift gener ated nice feature able roll thermal having simultane ously compensate pitch However air planes high rates yaw roll possibility gyroscopic coupling yaw roll axes yielding unex pected pitch-up response due gyroscopic precession problem coordi nated aileron aircraft since axis being spun time Swept-wing arrangements couple yaw roll much like dihedral doesbut some important differences yawed swept wing generates roll moment differ ence effective length wings wings still produce roughly same amount lift since have same area roughly same angle attack wing longer other has leverage means roll moment swept wing related to tal lift being produced yaw angle plane yawed 1 g roll mo ment will same independent speed pulling three gravities roll moment will three times great 0-g dive no roll mo ment upside down 1 g roll moment reversed Radio Con trol pure swept-wing model dihe dral ailerons will very tricky air plane fly well swept-wing airplanes ailerons emphasis rudder coordina tion will prevent unexpected responses Summary conclusions dihedral arrangement crucial handling roll axis Dihedral provides coupling between yaw roll roughly proportional Equivalent Dihedral Angle EDA yaw angle rolling moment wing can com puted based its dihedral arrangement yaw angle airspeed wingspan wing area planform Different dihedral arrangements have same roll moment otherwise equal V-dihedral wing said have Equivalent Dihedral Angle equal dihedral angle V-dihedral wing Equivalent Dihedral Angle given dihedral arrangement may easily calcu lated Various dihedral arrangements have anal ogies aileron arrangements Transitional maneuvers weak point rudder-and-elevator airplanes Generous dihedral long tail moment arm large verti Step future AVIATION Become Aviation Electronics Technician learn repair maintain electronic equipment used aboard aircraft Actual planes used training Hangar runway campus Train just 19 months Jobs waiting CALL NOW 1-800-758-5757 CLOVER PARK Vocational Technical Institute 4500 Steilacoom Blvd SW Tacoma WA 98499-4098 FAA Repair Station #4466 cal stabilizer lightweight wing tip pan els tail group minimize transitional shortcomings roll moment dihedral wing dependent overall angle attack Swept wings behave quite differently dihedral wings RC Soaring/Blakeslee Continued page 54 Adjustable preset trims Launch Cruise Speed Simple switch-selection simplifies pilots work during critical launch sequences In-flight setup changing Switch planes config uration on-the-fly try Out new adjustments enhance performance during particular events Landing position flap threshold selection Al lows set trip-point triggers aile ron spoiler deployment Works Airtronics FM/PPM FM/PCM receivers Initially Module 7SP Other brands added deal contact CSL make reserva tion have transmitter converted will send shipping kit sending transmitter work takes about 10 days ATRCS-modified transmitter re turned users manual explains program using examples illustrations Dur ing setup sequence asked inputs through menu-style prompts Special program features arc designed help enter correct information prevent accidental loss set ups Full information available fmm CSL 1361 Fallen Leaf Dr Milpitas CA 95035 can call 408 946-4142 SM Sailplanes Vince Parizek produces limited number Sailplane mostly Scale kits Kits may best word describe since Vinces planes appear pretty completely fin ished Lets have Vince tell us about himself well get specs two big Scale Sallplanes Just let know about background have involved RC Gliders years have building own Gliders quite some time grew up Europe became interested Scale Glid ers Since arriving States 1968 found basically no Scale ships made concerned however because could purchased Germany past few years drop dollar has put price out reach average modeler So decided offer experience Scale enthusiasts reasonable prices Because still hobby make kit myself production low waiting list stands about four weeks SMs two Scale ships Start & Flug H101 Salto 44-meters wingspan fourmeter Schleicher AS-W 17 Both have white gel coat epoxy glass fuselages foam wings sheeted obechi wood wings have ply wood spars plus carbon fiber reinforcement Aile ron spoiler areas reinforced twoounce glass cloth Tail surfaces also obechi covered foam Individual specs Salto fuselage 67in long wing area 1140 sq weight 85 lb wing loading 16-18 oz per sq ft airfoil modified Ritz II AS-W 17 specs include fuselage 59-in long wing area 1020 sq weight seven pounds wing loading 14 oz per sq ft airfoil modified Ritz III Both planes available basic com plete kit explained easily listing what complete kit gives leading edges wing tips installed shaped precut aile rons spoilers installed precut plywood pieces radio installation set decals Salto complete kit includes wheel basic complete kits AS-W 17 $289 $385 respectively Salto kits $425 $515 full-size AS-W 17 has 20-meter span model / scale Seventeen has enormously popular subject modelers H101 Salto much rarer subject Its maker offshoot Glasfiugel factory first flew 1971 wings Standard August 1988 167 Libellebut shortened 136 meters 44meter model thus /3 scale Salto German word loop can imagine fully stressed aerobatics model certainly looks lovely air Its best contact Vince further details exact ordering information address 2703 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 828-2300 Want see 23-ft-span Sailplane Remember giant Grob Twin Astir Scale Sailplane featured December column beauty made Roland Kern Roke Modelle kits Wannweil FR Germany Well Tony Arnoux Miami FL Roke importer says Roland planning attend AMA Nats Vir ginia will put up some demonstration flights Twin Astir flights expected Soaring site either before after days competition flying should really tract crowd Roland also plans enter Scale competition normal -sized planes four-meter ASK-18 Multiplex lend ing Roland radios US frequencies can fly both planes Mr Kern will taldng orders Twin Astir kitsfor about $2500 News Paris FAI/CIAM meeting John Grigg chairman ClAM F3B Subcommit tee passed along two important pieces news April meeting 1 New rules limat winch power 2 1989 F3B World Champion ships will France4Okm south Paris new winch rules set minimum internal re sistance values both winch motor battery 15 six milliohms respectively stalled-winch condition winch does meet minimums permanent fixed resistance must installed minimums will limit winch power about 16kw line pull 40kg less weak-link rule dropped new rule adopted immediately safety rea sons John said internal-resistance idea came Czech subcommittee representative Two-time World Champion Rolf Decker built recording volt-ohmmeter demonstrated subeommittec Paris winch must al lowed start must stalled quickiy less revolution RoIf did piece rope wrapped around drum ohmmeter must read resistance quickiy before heat builds up meters resistors increases readings World Champs other contests matter organizers will need test winch motor battery set seal resist ances nothing can altered US F3B final ists will need measure adjust winches L WANNA RACE MORTHFAT ARFA L BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs leformatioh Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVE FRANKLIN MASS 02038 Tel 617 528-4043 203 673 -2000 before finals Schematics test apparatus will made available ASAP word 16kw power standard Ford starter motor commonly used US can produce less power souped-up Fords US team used Achmer last year Stock Ford motors said have internal resistance 18-19 milliohms John said goal eventually get winch power down 11kw new rule appears workable solu tion very difficult problem F3B competition will much better LSF news League Silent Flights new ficers President Bob Steele Fort Wayne IN Vice-president Ray Hayes Romeo MI Secretary Jim Martin Xenia OH Treasurer Susie Lipp Defiance OH LSFs first order business get ac tive members mailing list An active mem ber has communicated LSF last two years sent voucher Level IV V current address dont fit either categories wish stay mailing list drop card LSF PO Box 647 Mundelein IL 60060 USA request ac tive status new 1SF officers asking Soaring clubs around country consider holding LSF re gional contest August September 1988 would like see 15-20 regional contests held Some already scheduled club interested just write call Ray Hayes 69598 Brookhill Dr Romeo MI 48065 phone number 313 752-6163 information first-rate contests well-attended because prior national publicity highly prized LSF plaques presented winners Both club 1SF make money winners regionals will invited 1989 LSF Internats tentatively scheduled Uti ca MI mid-August new Executive board dedicated revi talizing LSF helping restore spirit RC Soaring USA anything can help let know can help sending postcard cur rent addresstoday NSS news 1988 National Soaring Society Excellence Award Program EAP being run Sailplane editor Doug Dorton Scoring same last year cards distributed members sent EAP cards last year NSS member would like give program gobut didnt receive cardsdrop note Doug 3058 Bernina Dr Salt Lake City UT 84118 can call him 801 966matcnua rurrormance y5Iem TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS OBlendo4Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS 1625 way EAP works contests March through November meet simple cri teria have least 10 contestants score respect winners score earns certain number points member accumulates points over six contests wins need fill out card after contest have CD sign mail Doug nice merchandise prizes won theres no reason members shouldnt have try Sources materials John Wyss report making Kevlar fuselages whieh appeared June 1988 column mentioned gets Key lar Safe-T-Poxy George Span Aero space Composites Actually George handies sorts high-tech materials can check him needs PO Box 16621 Irvine CA 92714 Anyway mention Aerospace reminded recently saw list sources various specialized materials Marshall Longs Texas Soaring Conference Magazine As public service Ill reprint Marshalls list along very brief rundown what compa nies known Bob Sealy s Quality Fiberglass 521 96th Lane NE Blame MN 55434 Telephone 612 7802737 Bob makes several types fuselages Slope Thermal Cross-Country Sailplanes along foam wing cores Bob will cut type foam core wing profile person 10 FT B-17 PLANS $3500 3 CATALOGS 5900 THE BEST iN SCALE HOLMAN PO BOX 741 SAN BERNARDINO CA 92402 Send SSAE catalog iheet complete line KIlL RhBX$100 RIOOE catalog MACHINERY& TOOLS P0 Boo 536Y 3044623530 Hurricane Wr/ 25526 coffer complete selection lathes mills end tools viation Modeler 168 Model Aviation RADIO SOUTH K4C AUTHORIZED SERVICE CENTER Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Radio South Batteries 500 ma Pack 48V1100 Futaba conn1350 800 ma Pack 48V1950 Futaba conn2275 1200 ma Pack 48V2100 Futaba conn2425 TX batt Futaba G-Series PCM2450 Featuring fast service j~$ qualified peeple t latest equipment Including SPECTRUM ANAL YZER FREQUENCY CONVERSIONS AM4 Frequency Comnunee Approved TVA1 LAML~I We stock Futaba JR radios YS engines parts Hatori headers pipes Repair Heli Sets Gyros Orders COD MC American Express Pricessu blect change noticeOPEN 8-5 CST904 478-6745 %........ 43 West Nine Mile Rd Pensacola FL 32514 provide templates him use Cores white foam will have spar slots cut out Bob now making Bob Dodgsons hi selages epoxy/glassand doing beautiful job Viking Models USA 2026 Spring Lake Dr Martinez CA 94553 Telephone 415 6890766 Jerry Slates has very large selection fi bergiass fuselages choose including five Scale types catalog shows pictures fu selages available gives wing profile approximate wingspan can used Cliff Ol iver San Antonio bought Jerrys fuse lages called Contestant beautiful piece workmanship 53 long can carry wingspan up 148 E-205 profile kit comes clear canopy top tray Cliff will use Cross-Country ship September Corpus Christi 20K closed-course X C meet Wilshire Model Center 2836 Santa Monica Blvd Santa Monica CA 90404 Telephone 213 828-9362 Bob Ratzlaff recently purchased Wilshire Maddy Weiss determined keep up standards established Maddy late husband Hans Wilshire has special Sasiplanes-only catalog full kits kinds neat not-always-easy-to-find accessories scratch-builder possible order kit priced anything $30 $2000if wallet big eyes SR Batteries Box 287 Bellport NY 11713 Telephone 516 286-0079 company has offer just batteries although its main effort example carries Deans con nectors maldng own battery leads changing over servos own type equip ment An interesting item SR Piggy Back transmitter pack important person going record flight working higher LSF levels fly Electrics SR handles Ace RIC chargers Heavy Duty Digipace cyclers latter being made specially SR Batteries Aircraft Spruce Specialty Co PO Box 424 201 West Truslow Ave Fullerton CA 92632 Telephone 800 824-1930 Aircraft Spruce supplier full-size aircraft builders items sells interest modelers catalog outstanding Youll find sorts cloth resin tools aircraft construction Cadillac Plastics Houston TX Telephone 713 674-2400 See local storeBB Cadillac sells lot different items including 14-mil lar covering fiberglass surfacing vacuum-bag wing construction technique Vacu um pumps can purchased hardware stores dont come cheap purchased new Hobby Woods PO Box 48 Linden CA 95236 Telephone 209 887-3974 Marshall Long didnt include Hobby Woods list taking editorial license Id like add because excellent service quality balsa Ive gotten over years scratchbuilder try 11W balsa needs Gougeon Brothers PO Box X908 Bay City MI 48707 Telephone 517 684-7286 other company Marshalls listI noticed Gougeon Brothers mentioned Gordon Stratton Eastern Soaring Lines newsletter seems though should included GB primarily supplier fiberglass boatbuilding industry source West Sys tem epoxy 105 resin 205/206 hardener 301 vacuum pump epoxy dispensers fiberglass cloth carbon fiber Progress Princeton low-Reynoldsnumber airfoil tests repotted Michael Selig John Donovan stage have instrumentation support equipment run experiments lift model will measured spe cially designed one-component force balance drag will measured wake rake method will involve traversing airfoil wake single miniature total-head-pressure probe Other measurements will include gle attack free-stream dynamic pressure static pressure upstream downstream model quantities well oth ers will digitized through 12-bit A/D con verter connected IBM PC/XT data stor age analysis thorough description experimental apparatus procedure will given Soartech following experiments Sometime February plan begin stalling system wind tunnel have successful predicting work tests will begin end however clear experiments will have finished August 1988 because Michael finished Prince ton last August John will finish August have 12 wind tunnel models built seven currently under construction Clark-Y Stan Watson IL E193 Stan Koch TN E214 Terry Luckenbach PA S4061 E387 Forrest Miller NJ E387 S3021 S4233 Bob Cham pine VA MB253515 Mike Bame Jerry Krainock CA WB 135/35 WB 140/35 Woody Blanchard VA S2091 Dave Jones Bruce Baker Mike Chiddick Roger Egginton Lea Roger England 54061 Mark Allen CA E205 Dave Batey Co WI HQ 15/90 RoIf Girsberger Co Switzerland HQ 25/90 Ray Olsen Co AZ S4064 Stan Watson IL FXlO-100 Rich Border NJ have duplicates some airfoils can check possible degree performance variability between different models After start testing some models still plan design new airfoils have built tested Given have until end AuContinued page 172 5151JET SERIESThe Proud Bird theProd Bird planes feature balsadesigned meet construction Designed wIth thegsPRA rorela -scale model 111 accept intermediate flyer mind will120 ralesT5is 1/4 terill jet accept 2125 size engineuse60120 ci sIze engines rear exhaust engine ex ceptional performamceDet allEpOap glass faselagewIth foam wing construction full kIt $15111 Inc hassles darted fanSkyhaaxSemikit also avaIlable Ins wood $12511 SpecIal IntrodaPlease add $1101 shipping handling $411 flu Pen Sent check MDadd 6% sales tax -or Mastercard Visa -110 add $3013g5S54477 PARRISH AiRCRAFT Top Surkpy ot waxets formula ODart Experimental 255W49thTe, $9500 x $5 SIPTipersharktwoplace full sloe aircraft amlatiam Pta 33315 August 1988 169 No 593 Taylorcraft $1000 RO Sport Scale lightplane builds standard two-placer clippedwing air show stunter Span 70 58 30140 two-stroke 40/48 four-stroke engine Two plan sheets no documentation No 594 P-61 Black Widow $800 CL Profile Scale WW II twin-engine night fighter uses 19/25 engines spans 491/2 No 193Stiletto CL Saint model McDonald winner 1076 1980 1982 FAI World Champs$ 375 No 239Blue Birds AC Ken Willards formation plane 4-channel 10115 power$ 375 No 262chmaster CL Crash-prasf trainer two sizes15/30 35/40 pnwer$ 125 No 3101930 Fleet BIplane AC Sport Scale far 35/40 4-channel Wingspan Sit scale Two sheets5 625 No 314Drake II RC Ken Willards tying boat 3-channel 15-power Fly land wifh mmovable gear$375 No 326Taylor cub AC Don Sn/Is Schoelyard-Scale 0495 2-3 channel Spans 50 inS350 No 332Zephyr AC Small 2-channel gilder fer hood-Isanch 010w thermal slope soaneg5 200 No 386Laser 200 AC Sport Scale mplica championship Aerohahc filer Uses 40 power 4-5 channel Two sheets51075 No 414ElectrIc Sparky RC Elecfric fan filer 05 motor 3-channel RC scaled-up 1939 rahber-power favorite$050 No 440cavalIer AC Old-Timer-like new design has huge wing slow easy flights Par 35 pwr 3 ch Two sheets$1725 No 4471/2A Miss America AC Old-Timer Texaco model 040 glow 2-channels$650 No 454Sweet P-30 FF Neat stick-and-dense Qatrisor gabber P-30-clans model a contest-wusner$200 No 457Spectra AC Electric-power ts 06-sloe motor ones 3 different wings sport searing aembaSco5700 No 4604-40 AC Shnelder-wing sport filer 4-cycle 40-size engine 4 channels$650 No 465Blue Max II AC Fan-fly sportater tsr 40-sire engines spans 52 Lightweight stractum$700 No 478Buttercup AC Cute nOun sportster uses micra 2-ch AC pulse-insider Spans 27 0201035 power$300 No 490Weekender AC Low-wing sport tier 20-ode 4-stroke engine spans 47 in$575 No 506Playmate AC Sport filer 3 RC channels 10125-one engines spans 50 in$650 No 512Extra 230 AC Giant Scale acrahatic plane spans 8 ones Quadra engine Two plan sheets$1650 No 514Henry T AC Sportster tor IsA 2-3 channel 00 spans 52 han adlastable wing flapsS475 No 521Comet Jr clipper Plus 35% AC Old-Timer sporaiter leA engine 2-nh AC spans 40 0 No 522Sorts Pitta AC Reminder-scale bipo far 40160 engines spons 43 Two plan sheets$1050 No 525NI-Tech 2002 00 Canard ducted-fan far 45 engines spans 39 Two sheets$1000 No 528Swallow AC Lightweight holdegger 40-size four-stroke engines spans SB in$025 No 531TerrIble Coupe PF Aubber-powerad Coope driloer spans 40 contest-winner$475 No 533Cessna C-37 AC Schoolyard Scale famoas 305 plane 049110 power 2-ch spans 42 in$500 No 5341938 Challenger AC Texaco Old-Timer spans 47/o 040 engine 2-channel AC$550 No 535Agrix AC AMA Class 0 Sailplane spain 110 uses 4-channel AC system$725 No 539Simitar Slow-Motion 15 AC Tailless flying wing tar 15 engines spans 60 ones 3-ch AC$350 No 541Parakeet AC Sport hiplane tsr 15125 engines 3-channel AC esfoipment spans 42 in5675 No 544Heron AC 511 Winters sport Electric tsr geamd 075 motor 3 AC ch spans 65 in$575 No 549cricket AC Sport scalelike tor 20-san two- four-strake engine spans 40 in$675 No 554Super Doubler II AC Sport AerobaticsPylon far 40/46 toar-strake engine spans 57 in$575 No 555Double Duty AC Basic/advanced trainer 10115 engines spans either 67 en 50 Two plan sheets$1075 No 559Low Voltage AC Electric-power oporfater fnr 035 motor spans 44 inS475 No 561Wild Ham RC Tri-motar sponster spans 63 ones 25 engines Two plan sheets5900 No 553to AC AMA Class B 2-Meter Sailplane has 703/e-in-spOn toam wing$725 No 565Sea Loon AC Pod-and-hanra seaplane 15 power spans 4W/u in$675 No 568Avro 560 FF Mini-electric Scale 23 British utralight spans 30 in5200 No 569Electroagmak AC Electric aesehatic plane spans 44 uses 00 motor$550 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-balas bout-up surtaces$400 No 571Voyager CL Sorta-Scale A-powemd voodoo amund-the-world plane spans 46/e in$225 No 572TR-260 AC Sport Scale Aesehatic plane 4-steeke 60/65 power spans 60 in$1100 No 573Pink Lady F-40 CL Bill Wisniewokis Fonnala 40 Speedster 40 power spans 27 in$400 No 575Scorpion 60 AC Fun-fly aembaitc plant 60 power spans 501/s in$1150 No 576Serendipltyl ndant EZB racold-helder opens 17% in$325 No 577Halflite CL /sA Combat plane has toem wing spans 30 inS225 No 576Schwelzer 1-268 AC Quarter-scale Sailplane spans 125 Tow plan sheets$1475 No 579Lockheed P438 CL Pmcision Scale WW II fighter far twin 4So spans 55 iv Fowler flaps etc Three plan sheets$1000 No 580Parnall Pixie PP Rubber Scale Gelden Age British biplane 112 scale spans 31/a in$375 No 581Gee Bee Model Y AC Golden Age Aecer spans 72 scale 60 power Thwe plan sheets$1175 No 582Heinkel 100 CL Sport Scale 01W II fighter tor 40 engine spans 61/o otnecaim mostly car/deard Two plan shts$1250 No553Spoetwagon AC Radis-ised sport FF model spans 54 ones 10115 engine$700 No 584Happy Days CL Intermediate trainer/Stunter spans 42 in. uses 20135 engine$575 No 585Dragonfly PP fligh-porfermance P-30 Aahber ship opens 30 iv weighs 50 gramoS400 No 586Snapdragon AC Fan-fly/sporaiter far 25130 engines spans 45 in$600 No 587Pilatus PC-9 CL ProOle Scalelfltunterloportster spans 50 in. ows 29135 engine$550 No 588Malah AC Slope-Searing Sailplane opens 41 ones 2 AC channels5425 No 589Vlckera Weflesley AC Spon Scale WW II bomber spans 00 in. uses 40 4-cycle engine Two p100 sheets no dec$1250 No 590Bud Lite Laser Stunter CL Stoeter le scalelike spain 63 uses 60 engine Two plan sheets$1050 No 591Focke-Wulfi FW 190-A AC Sport Scale 01W II fighter spans 50 in. uses 35145 2-strake engine Twa plan sht no doc$1350 No 592 ET CL trainerlapodster ones 05 electrc power 0-cell bafler5 pack Wingspan 24 in $ 475 Circle numbers plans wish order 193 414 490 531 554 570 579 587 239 440 506 533 555 571 580 588 262 447 512 534 559 572 581 589 310 454 514 535 561 573 582 590 314 457 521 539 563 575 583 591 326 460 522 541 565 576 584 592 332 465 525 544 568 577 585 593 386 478 528 549 569 578 586 594 Plan price inCIUdOS first Class postage US delivery Air Mail over 300 miles ordBrs non-US address lease add $250 Air Mail asIa e handlin Ian Make Check money order payable US funds drawn US bagk Model Aviation c/c AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ AMA No ______________ EJ AM F STREET CITY ZIP RC Soaring/Blakeslee Continued page 169 gust however may abte wanted very thankful large number people have contributed project continue support following excerpt taken last progress report 4-15-87 point entire measurement sys tem has received considerable improvement thanks contributions time money equipment David Fraser Fraser-Volpe Corp PA Professors AJ Smits SH Lam HC Curtiss Princeton University Ray Olsen AZ Professor MD Maughmer Penn State Herk Stokely Soartech MKS Instru ments MA Scientific Solutions Inc OH have also received help lee Murray WI Professor Mark Drela MIT Preben Norhoim Denmark have overwhelming response initial letter asking help building wind tunnel models addition listed above following have also offered build models us Chuck Anderson TN Jerry Arana CA Ken Bates Ken Shaw MI Tony Beck VA Ron Carter UT Jack Cash MD Bart Como TX Seth Dawson Co CA David Fraser Co PA Duane Harris IA Peter Illick CO Harley Michaelis WA Carl Mobs MI Mark Nankivil Co MO Ted Off CA RJ Ostrander NJ Tom Pratt OH Mike Reed CA Joe Rumineki NC Ty son Sawyer NH Gordon Stratton NY Doug Stout NJ Jeff Troy VA Over last several months Jerry Jackson TX Armin Saxer Switzerland Chuck Gris wold CA HJ Rogers OH Brian Smith OH Tom Yamokoski OH Trey Wood AL Karl Widiner CA Todd Enlund LA have helped us either making contributions offer ing build wind tunnel models hope no has left out begin taking measure ments will sure let know Thanks again Everyone knows important experi ments Michael John Im pleased able pass along progress reports ac knowledge Sailplaners helping models other support hear more good reports about existing Selig airfoils further improvements can made im pact model Sailpianes should tremendous Want electrostatic stabilizer October 1987 column description Maynard Hill workings electrostatic stabilizers generated lot interest readers wrote requesting copies Maynards full write-up interested purchasing ready-made sta bilizer may purchase Maynard $174 plus $28 required two polonium io nizers Contact Maynard Aero Probe Technol ogy 2001 Norvale Rd Silver Spring MD 20906 1988 Ohio Cup contests Dayton Area Ther mal Soarers DARTS will host series four contests total fliers best two scores will win Ohio Cup Dates June 1819 August 20-21 Jim Martin 513/376-9046 will CD June contests Gale Lerach 513/429-2543 Jerry Shape 513/843-5085 will CDs August ones Sounds like great idea State wide bragging rights 172 Model Aviation 0 03 0 coo Coo -set o g 513 zo Os es - 00as -2 0 ases n o 2 5 Gac 0 V Ces ens 0 e V 00 oat C 0 SE 8200 00 C n 82 01 C -B 0
Edition: Model Aviation - 1988/08
Page Numbers: 54, 55, 167, 168, 169, 172
5 1NEW Control Systems Laboratories ATRCS Airtronics Module SP good RC system very popular Sailplane fliers What would think someone told could transform SP equal sophisticated radio worldfor $300 think lot people would jump chance Granted rudder-steered polyhedral planes dont need high-tech set hut fliers planes hav ing ailerons flaps ability kinds tricks reasonable price will wel comed people Control Systems Laboratories will performs miracles Eugene En gelau Thomas Mroz formed CSL manufacture install retrofit computer elec tromes will turn old pumpkin Rolls Royce first PC boards SP radio mods other radios will added shortly Gene Tom both members South Bay Soaring Society great news us because understand special needs mod ern Sailplanes call system ATRCS stands Advanced Technology Radio Control System Its pronounced A-Tracks Since computer-on-a-chip business way over head following description copied CSLs introductory flyer microprocessor used ATRCS pow erful low-power-consuming no additional batteries required 16-MHz 16-bit-wide-bus cal culating machine characteristics translate computational power four times greater similar system being offered today Calculat ing power such means will never see jitter jumpiness control surfaces never experience delay between time push stick flip switch control surface actually moves ATRCS powerful control system having very comprehensive set features designed RC flying today morrow its features Multiple-setup memory four planes No backup battery required Auto setup Save fea ture avoids setup errors Type-of-plane setup templates Easy setup new planes changes old setups Trim travel adjustments individual sur faces Allows correction servo linkage mis matches Mode definition Allows configure transmitter controls suit own taste Advanced mixing functions Full trailing edge camber adjustment Crow ailerons Up/flaps Down aileron-to-flap flap-to-elevator elevatorto-camber etc Continued page 167 Want know about ATRCS A-Tracks transmitter mod available Control Systems Laboratories Theres lots info Byrons column month Photo depicts display switch board Front memory board front Airtronics 7SP Mod ule transmitter ATRCS allows imaginable kind control mixing control throw limiting trim adjusting etcand can store four different setups No additional batteries required SM Sailplanes 4-meter AS-W 17 fifth-scale model Kits have fiberglass fuselages obechi sheeted foam wings Made USA too SMs products sure look like beauties 54 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Wlnnebago Dr Sedalia CO 80135 Transmitters flip-down front cover allows easy access ATRS liquid crystal display LCD six pushbuttons used set up transmitter anything can think Roland Kerns 23-ft-wingspan Grab Twin Astir sits rest German modeler plans bring 88 Nats some demo flights Theres info column SM Sailpianes Santa Monica CA H-1O1 Salto 1/3-scale Sailplane looks great both ground flight Model spans 44 ters 172 14 4 GRAMCO POCKET PROP Adjustable Returning Toy Quality Hardwoods Left Right Handed Flies Approx 25 yds Illustrated Directions $15 Includes Postage THE GREAT AMERICAN COMEBACK 4554 SUNRISE BLVD DELRAY BEACH FL 33445 ~ TR260 Freud Aerwduik Deaigu 114 Stand-off Scale Kit span Length66 Wing area 1213 sq Weight.. 165 lbs Power035-040 G38-G62 FuE lit $21500 plus shIpping *1100 Everything scratch kit plus precut wood pets contptete mod z *AII wood & foam csnstructlen eFillergIas cowl 6 pants *2plece plug-in wings Foam core airfolled tail surfaces No tail brace wires required FOR MORE INFO ONTO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Luke IA 5136 DELUXE Kit $28500 plus shIpping $1100 Everything tel kit bat stag spars lestafled wingS stab turtle deck hatch & fin tee-abteneti stilt illS haha MAKES DUILfhst QUICK 115 SCALE 4ISTR ENG WACO HKS -777812-4/STR GREAT LAKES TR6490-4/STR GREAT LAKES SPL 6490-4/STR PLANS 0 / PG COWL 0 / ECONO PAC 0 14 GIANT SCALE BIG ENG WACO HKS -79975 25-4 ENG GREAT LAKESTR80 20-3 ENG GREAT LAKES SPL 80 20-3 ENG PLANS 0 IFS COWL 0/PS PANTS 0 ECONO-PAC 0 / GREAT LAKES 0 114 SCALE FARMAN MOUSTIQUE 80 45- 604/STRPLAN 0 * 2 RIC ANTIQUE MODELS * BILL WINTERS ROOKIE72 span45 4/STR DEBOLTS LIVE WIRE TRAINER 25% -60 span 25 2/STR -40 4/STR S 0 ea ADO $300 S & H CONT us 10 SASE tNFO NORMAN ROSENSTOCK 124 GRANADA ST ROYAL PALM BEACH FL 33411 August 1988 55 R ECI YOUR EYES IN COMFORT WI IN NFORDA3LE HANDSOME vision tmportant sense high-quality scratch resistant polycarbonate lens safety glasses must modelers Available clear gray dark green light green gradient mirrored gray lens Adjustable temples Wide view ANSI Z87 approved GREAT PRICES Iwant protect eyes style comfort U Clear-$725 eaL Gray$855 ew U Lt Green$855 ea UDk Green-$855ea UGradientMirmr-$lOSOea NAME ADDRESS cnYsrxiyztp Send check money order C&C Enterprises 141 Willa Dr Columbia SC 29209 SC Residents add 5% Sales Tax lius shipping $1100 Cowl pasta campy landing gear daet Inner cores ler shrg tail naufaces turtle deck hatch A monthly publication Covering International RC Soaring Scene US $17 yr 21/yr 1st Class In Canada/Moxlco $22/yr US funds Asia & Pacific $28/yr US funds Europe UK $28/yr US funds Surfaco Mail Foreign $18/yr USfunds RC SOARING DIGEST PO Box 1079 Payson AZ 85547 airplane will roll same direction same speed upright upside down 0-g dive true because roll moment generated equal opposite changes angle attack left wing right Within wings unstalled range angle tack change lift per change angle attack approximately constant cause change matters base angle attack important Note also because equal opposite change yawing airplane will cause change total lift gener ated nice feature able roll thermal having simultane ously compensate pitch However air planes high rates yaw roll possibility gyroscopic coupling yaw roll axes yielding unex pected pitch-up response due gyroscopic precession problem coordi nated aileron aircraft since axis being spun time Swept-wing arrangements couple yaw roll much like dihedral doesbut some important differences yawed swept wing generates roll moment differ ence effective length wings wings still produce roughly same amount lift since have same area roughly same angle attack wing longer other has leverage means roll moment swept wing related to tal lift being produced yaw angle plane yawed 1 g roll mo ment will same independent speed pulling three gravities roll moment will three times great 0-g dive no roll mo ment upside down 1 g roll moment reversed Radio Con trol pure swept-wing model dihe dral ailerons will very tricky air plane fly well swept-wing airplanes ailerons emphasis rudder coordina tion will prevent unexpected responses Summary conclusions dihedral arrangement crucial handling roll axis Dihedral provides coupling between yaw roll roughly proportional Equivalent Dihedral Angle EDA yaw angle rolling moment wing can com puted based its dihedral arrangement yaw angle airspeed wingspan wing area planform Different dihedral arrangements have same roll moment otherwise equal V-dihedral wing said have Equivalent Dihedral Angle equal dihedral angle V-dihedral wing Equivalent Dihedral Angle given dihedral arrangement may easily calcu lated Various dihedral arrangements have anal ogies aileron arrangements Transitional maneuvers weak point rudder-and-elevator airplanes Generous dihedral long tail moment arm large verti Step future AVIATION Become Aviation Electronics Technician learn repair maintain electronic equipment used aboard aircraft Actual planes used training Hangar runway campus Train just 19 months Jobs waiting CALL NOW 1-800-758-5757 CLOVER PARK Vocational Technical Institute 4500 Steilacoom Blvd SW Tacoma WA 98499-4098 FAA Repair Station #4466 cal stabilizer lightweight wing tip pan els tail group minimize transitional shortcomings roll moment dihedral wing dependent overall angle attack Swept wings behave quite differently dihedral wings RC Soaring/Blakeslee Continued page 54 Adjustable preset trims Launch Cruise Speed Simple switch-selection simplifies pilots work during critical launch sequences In-flight setup changing Switch planes config uration on-the-fly try Out new adjustments enhance performance during particular events Landing position flap threshold selection Al lows set trip-point triggers aile ron spoiler deployment Works Airtronics FM/PPM FM/PCM receivers Initially Module 7SP Other brands added deal contact CSL make reserva tion have transmitter converted will send shipping kit sending transmitter work takes about 10 days ATRCS-modified transmitter re turned users manual explains program using examples illustrations Dur ing setup sequence asked inputs through menu-style prompts Special program features arc designed help enter correct information prevent accidental loss set ups Full information available fmm CSL 1361 Fallen Leaf Dr Milpitas CA 95035 can call 408 946-4142 SM Sailplanes Vince Parizek produces limited number Sailplane mostly Scale kits Kits may best word describe since Vinces planes appear pretty completely fin ished Lets have Vince tell us about himself well get specs two big Scale Sallplanes Just let know about background have involved RC Gliders years have building own Gliders quite some time grew up Europe became interested Scale Glid ers Since arriving States 1968 found basically no Scale ships made concerned however because could purchased Germany past few years drop dollar has put price out reach average modeler So decided offer experience Scale enthusiasts reasonable prices Because still hobby make kit myself production low waiting list stands about four weeks SMs two Scale ships Start & Flug H101 Salto 44-meters wingspan fourmeter Schleicher AS-W 17 Both have white gel coat epoxy glass fuselages foam wings sheeted obechi wood wings have ply wood spars plus carbon fiber reinforcement Aile ron spoiler areas reinforced twoounce glass cloth Tail surfaces also obechi covered foam Individual specs Salto fuselage 67in long wing area 1140 sq weight 85 lb wing loading 16-18 oz per sq ft airfoil modified Ritz II AS-W 17 specs include fuselage 59-in long wing area 1020 sq weight seven pounds wing loading 14 oz per sq ft airfoil modified Ritz III Both planes available basic com plete kit explained easily listing what complete kit gives leading edges wing tips installed shaped precut aile rons spoilers installed precut plywood pieces radio installation set decals Salto complete kit includes wheel basic complete kits AS-W 17 $289 $385 respectively Salto kits $425 $515 full-size AS-W 17 has 20-meter span model / scale Seventeen has enormously popular subject modelers H101 Salto much rarer subject Its maker offshoot Glasfiugel factory first flew 1971 wings Standard August 1988 167 Libellebut shortened 136 meters 44meter model thus /3 scale Salto German word loop can imagine fully stressed aerobatics model certainly looks lovely air Its best contact Vince further details exact ordering information address 2703 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 828-2300 Want see 23-ft-span Sailplane Remember giant Grob Twin Astir Scale Sailplane featured December column beauty made Roland Kern Roke Modelle kits Wannweil FR Germany Well Tony Arnoux Miami FL Roke importer says Roland planning attend AMA Nats Vir ginia will put up some demonstration flights Twin Astir flights expected Soaring site either before after days competition flying should really tract crowd Roland also plans enter Scale competition normal -sized planes four-meter ASK-18 Multiplex lend ing Roland radios US frequencies can fly both planes Mr Kern will taldng orders Twin Astir kitsfor about $2500 News Paris FAI/CIAM meeting John Grigg chairman ClAM F3B Subcommit tee passed along two important pieces news April meeting 1 New rules limat winch power 2 1989 F3B World Champion ships will France4Okm south Paris new winch rules set minimum internal re sistance values both winch motor battery 15 six milliohms respectively stalled-winch condition winch does meet minimums permanent fixed resistance must installed minimums will limit winch power about 16kw line pull 40kg less weak-link rule dropped new rule adopted immediately safety rea sons John said internal-resistance idea came Czech subcommittee representative Two-time World Champion Rolf Decker built recording volt-ohmmeter demonstrated subeommittec Paris winch must al lowed start must stalled quickiy less revolution RoIf did piece rope wrapped around drum ohmmeter must read resistance quickiy before heat builds up meters resistors increases readings World Champs other contests matter organizers will need test winch motor battery set seal resist ances nothing can altered US F3B final ists will need measure adjust winches L WANNA RACE MORTHFAT ARFA L BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs leformatioh Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVE FRANKLIN MASS 02038 Tel 617 528-4043 203 673 -2000 before finals Schematics test apparatus will made available ASAP word 16kw power standard Ford starter motor commonly used US can produce less power souped-up Fords US team used Achmer last year Stock Ford motors said have internal resistance 18-19 milliohms John said goal eventually get winch power down 11kw new rule appears workable solu tion very difficult problem F3B competition will much better LSF news League Silent Flights new ficers President Bob Steele Fort Wayne IN Vice-president Ray Hayes Romeo MI Secretary Jim Martin Xenia OH Treasurer Susie Lipp Defiance OH LSFs first order business get ac tive members mailing list An active mem ber has communicated LSF last two years sent voucher Level IV V current address dont fit either categories wish stay mailing list drop card LSF PO Box 647 Mundelein IL 60060 USA request ac tive status new 1SF officers asking Soaring clubs around country consider holding LSF re gional contest August September 1988 would like see 15-20 regional contests held Some already scheduled club interested just write call Ray Hayes 69598 Brookhill Dr Romeo MI 48065 phone number 313 752-6163 information first-rate contests well-attended because prior national publicity highly prized LSF plaques presented winners Both club 1SF make money winners regionals will invited 1989 LSF Internats tentatively scheduled Uti ca MI mid-August new Executive board dedicated revi talizing LSF helping restore spirit RC Soaring USA anything can help let know can help sending postcard cur rent addresstoday NSS news 1988 National Soaring Society Excellence Award Program EAP being run Sailplane editor Doug Dorton Scoring same last year cards distributed members sent EAP cards last year NSS member would like give program gobut didnt receive cardsdrop note Doug 3058 Bernina Dr Salt Lake City UT 84118 can call him 801 966matcnua rurrormance y5Iem TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS OBlendo4Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS 1625 way EAP works contests March through November meet simple cri teria have least 10 contestants score respect winners score earns certain number points member accumulates points over six contests wins need fill out card after contest have CD sign mail Doug nice merchandise prizes won theres no reason members shouldnt have try Sources materials John Wyss report making Kevlar fuselages whieh appeared June 1988 column mentioned gets Key lar Safe-T-Poxy George Span Aero space Composites Actually George handies sorts high-tech materials can check him needs PO Box 16621 Irvine CA 92714 Anyway mention Aerospace reminded recently saw list sources various specialized materials Marshall Longs Texas Soaring Conference Magazine As public service Ill reprint Marshalls list along very brief rundown what compa nies known Bob Sealy s Quality Fiberglass 521 96th Lane NE Blame MN 55434 Telephone 612 7802737 Bob makes several types fuselages Slope Thermal Cross-Country Sailplanes along foam wing cores Bob will cut type foam core wing profile person 10 FT B-17 PLANS $3500 3 CATALOGS 5900 THE BEST iN SCALE HOLMAN PO BOX 741 SAN BERNARDINO CA 92402 Send SSAE catalog iheet complete line KIlL RhBX$100 RIOOE catalog MACHINERY& TOOLS P0 Boo 536Y 3044623530 Hurricane Wr/ 25526 coffer complete selection lathes mills end tools viation Modeler 168 Model Aviation RADIO SOUTH K4C AUTHORIZED SERVICE CENTER Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Radio South Batteries 500 ma Pack 48V1100 Futaba conn1350 800 ma Pack 48V1950 Futaba conn2275 1200 ma Pack 48V2100 Futaba conn2425 TX batt Futaba G-Series PCM2450 Featuring fast service j~$ qualified peeple t latest equipment Including SPECTRUM ANAL YZER FREQUENCY CONVERSIONS AM4 Frequency Comnunee Approved TVA1 LAML~I We stock Futaba JR radios YS engines parts Hatori headers pipes Repair Heli Sets Gyros Orders COD MC American Express Pricessu blect change noticeOPEN 8-5 CST904 478-6745 %........ 43 West Nine Mile Rd Pensacola FL 32514 provide templates him use Cores white foam will have spar slots cut out Bob now making Bob Dodgsons hi selages epoxy/glassand doing beautiful job Viking Models USA 2026 Spring Lake Dr Martinez CA 94553 Telephone 415 6890766 Jerry Slates has very large selection fi bergiass fuselages choose including five Scale types catalog shows pictures fu selages available gives wing profile approximate wingspan can used Cliff Ol iver San Antonio bought Jerrys fuse lages called Contestant beautiful piece workmanship 53 long can carry wingspan up 148 E-205 profile kit comes clear canopy top tray Cliff will use Cross-Country ship September Corpus Christi 20K closed-course X C meet Wilshire Model Center 2836 Santa Monica Blvd Santa Monica CA 90404 Telephone 213 828-9362 Bob Ratzlaff recently purchased Wilshire Maddy Weiss determined keep up standards established Maddy late husband Hans Wilshire has special Sasiplanes-only catalog full kits kinds neat not-always-easy-to-find accessories scratch-builder possible order kit priced anything $30 $2000if wallet big eyes SR Batteries Box 287 Bellport NY 11713 Telephone 516 286-0079 company has offer just batteries although its main effort example carries Deans con nectors maldng own battery leads changing over servos own type equip ment An interesting item SR Piggy Back transmitter pack important person going record flight working higher LSF levels fly Electrics SR handles Ace RIC chargers Heavy Duty Digipace cyclers latter being made specially SR Batteries Aircraft Spruce Specialty Co PO Box 424 201 West Truslow Ave Fullerton CA 92632 Telephone 800 824-1930 Aircraft Spruce supplier full-size aircraft builders items sells interest modelers catalog outstanding Youll find sorts cloth resin tools aircraft construction Cadillac Plastics Houston TX Telephone 713 674-2400 See local storeBB Cadillac sells lot different items including 14-mil lar covering fiberglass surfacing vacuum-bag wing construction technique Vacu um pumps can purchased hardware stores dont come cheap purchased new Hobby Woods PO Box 48 Linden CA 95236 Telephone 209 887-3974 Marshall Long didnt include Hobby Woods list taking editorial license Id like add because excellent service quality balsa Ive gotten over years scratchbuilder try 11W balsa needs Gougeon Brothers PO Box X908 Bay City MI 48707 Telephone 517 684-7286 other company Marshalls listI noticed Gougeon Brothers mentioned Gordon Stratton Eastern Soaring Lines newsletter seems though should included GB primarily supplier fiberglass boatbuilding industry source West Sys tem epoxy 105 resin 205/206 hardener 301 vacuum pump epoxy dispensers fiberglass cloth carbon fiber Progress Princeton low-Reynoldsnumber airfoil tests repotted Michael Selig John Donovan stage have instrumentation support equipment run experiments lift model will measured spe cially designed one-component force balance drag will measured wake rake method will involve traversing airfoil wake single miniature total-head-pressure probe Other measurements will include gle attack free-stream dynamic pressure static pressure upstream downstream model quantities well oth ers will digitized through 12-bit A/D con verter connected IBM PC/XT data stor age analysis thorough description experimental apparatus procedure will given Soartech following experiments Sometime February plan begin stalling system wind tunnel have successful predicting work tests will begin end however clear experiments will have finished August 1988 because Michael finished Prince ton last August John will finish August have 12 wind tunnel models built seven currently under construction Clark-Y Stan Watson IL E193 Stan Koch TN E214 Terry Luckenbach PA S4061 E387 Forrest Miller NJ E387 S3021 S4233 Bob Cham pine VA MB253515 Mike Bame Jerry Krainock CA WB 135/35 WB 140/35 Woody Blanchard VA S2091 Dave Jones Bruce Baker Mike Chiddick Roger Egginton Lea Roger England 54061 Mark Allen CA E205 Dave Batey Co WI HQ 15/90 RoIf Girsberger Co Switzerland HQ 25/90 Ray Olsen Co AZ S4064 Stan Watson IL FXlO-100 Rich Border NJ have duplicates some airfoils can check possible degree performance variability between different models After start testing some models still plan design new airfoils have built tested Given have until end AuContinued page 172 5151JET SERIESThe Proud Bird theProd Bird planes feature balsadesigned meet construction Designed wIth thegsPRA rorela -scale model 111 accept intermediate flyer mind will120 ralesT5is 1/4 terill jet accept 2125 size engineuse60120 ci sIze engines rear exhaust engine ex ceptional performamceDet allEpOap glass faselagewIth foam wing construction full kIt $15111 Inc hassles darted fanSkyhaaxSemikit also avaIlable Ins wood $12511 SpecIal IntrodaPlease add $1101 shipping handling $411 flu Pen Sent check MDadd 6% sales tax -or Mastercard Visa -110 add $3013g5S54477 PARRISH AiRCRAFT Top Surkpy ot waxets formula ODart Experimental 255W49thTe, $9500 x $5 SIPTipersharktwoplace full sloe aircraft amlatiam Pta 33315 August 1988 169 No 593 Taylorcraft $1000 RO Sport Scale lightplane builds standard two-placer clippedwing air show stunter Span 70 58 30140 two-stroke 40/48 four-stroke engine Two plan sheets no documentation No 594 P-61 Black Widow $800 CL Profile Scale WW II twin-engine night fighter uses 19/25 engines spans 491/2 No 193Stiletto CL Saint model McDonald winner 1076 1980 1982 FAI World Champs$ 375 No 239Blue Birds AC Ken Willards formation plane 4-channel 10115 power$ 375 No 262chmaster CL Crash-prasf trainer two sizes15/30 35/40 pnwer$ 125 No 3101930 Fleet BIplane AC Sport Scale far 35/40 4-channel Wingspan Sit scale Two sheets5 625 No 314Drake II RC Ken Willards tying boat 3-channel 15-power Fly land wifh mmovable gear$375 No 326Taylor cub AC Don Sn/Is Schoelyard-Scale 0495 2-3 channel Spans 50 inS350 No 332Zephyr AC Small 2-channel gilder fer hood-Isanch 010w thermal slope soaneg5 200 No 386Laser 200 AC Sport Scale mplica championship Aerohahc filer Uses 40 power 4-5 channel Two sheets51075 No 414ElectrIc Sparky RC Elecfric fan filer 05 motor 3-channel RC scaled-up 1939 rahber-power favorite$050 No 440cavalIer AC Old-Timer-like new design has huge wing slow easy flights Par 35 pwr 3 ch Two sheets$1725 No 4471/2A Miss America AC Old-Timer Texaco model 040 glow 2-channels$650 No 454Sweet P-30 FF Neat stick-and-dense Qatrisor gabber P-30-clans model a contest-wusner$200 No 457Spectra AC Electric-power ts 06-sloe motor ones 3 different wings sport searing aembaSco5700 No 4604-40 AC Shnelder-wing sport filer 4-cycle 40-size engine 4 channels$650 No 465Blue Max II AC Fan-fly sportater tsr 40-sire engines spans 52 Lightweight stractum$700 No 478Buttercup AC Cute nOun sportster uses micra 2-ch AC pulse-insider Spans 27 0201035 power$300 No 490Weekender AC Low-wing sport tier 20-ode 4-stroke engine spans 47 in$575 No 506Playmate AC Sport filer 3 RC channels 10125-one engines spans 50 in$650 No 512Extra 230 AC Giant Scale acrahatic plane spans 8 ones Quadra engine Two plan sheets$1650 No 514Henry T AC Sportster tor IsA 2-3 channel 00 spans 52 han adlastable wing flapsS475 No 521Comet Jr clipper Plus 35% AC Old-Timer sporaiter leA engine 2-nh AC spans 40 0 No 522Sorts Pitta AC Reminder-scale bipo far 40160 engines spons 43 Two plan sheets$1050 No 525NI-Tech 2002 00 Canard ducted-fan far 45 engines spans 39 Two sheets$1000 No 528Swallow AC Lightweight holdegger 40-size four-stroke engines spans SB in$025 No 531TerrIble Coupe PF Aubber-powerad Coope driloer spans 40 contest-winner$475 No 533Cessna C-37 AC Schoolyard Scale famoas 305 plane 049110 power 2-ch spans 42 in$500 No 5341938 Challenger AC Texaco Old-Timer spans 47/o 040 engine 2-channel AC$550 No 535Agrix AC AMA Class 0 Sailplane spain 110 uses 4-channel AC system$725 No 539Simitar Slow-Motion 15 AC Tailless flying wing tar 15 engines spans 60 ones 3-ch AC$350 No 541Parakeet AC Sport hiplane tsr 15125 engines 3-channel AC esfoipment spans 42 in5675 No 544Heron AC 511 Winters sport Electric tsr geamd 075 motor 3 AC ch spans 65 in$575 No 549cricket AC Sport scalelike tor 20-san two- four-strake engine spans 40 in$675 No 554Super Doubler II AC Sport AerobaticsPylon far 40/46 toar-strake engine spans 57 in$575 No 555Double Duty AC Basic/advanced trainer 10115 engines spans either 67 en 50 Two plan sheets$1075 No 559Low Voltage AC Electric-power oporfater fnr 035 motor spans 44 inS475 No 561Wild Ham RC Tri-motar sponster spans 63 ones 25 engines Two plan sheets5900 No 553to AC AMA Class B 2-Meter Sailplane has 703/e-in-spOn toam wing$725 No 565Sea Loon AC Pod-and-hanra seaplane 15 power spans 4W/u in$675 No 568Avro 560 FF Mini-electric Scale 23 British utralight spans 30 in5200 No 569Electroagmak AC Electric aesehatic plane spans 44 uses 00 motor$550 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-balas bout-up surtaces$400 No 571Voyager CL Sorta-Scale A-powemd voodoo amund-the-world plane spans 46/e in$225 No 572TR-260 AC Sport Scale Aesehatic plane 4-steeke 60/65 power spans 60 in$1100 No 573Pink Lady F-40 CL Bill Wisniewokis Fonnala 40 Speedster 40 power spans 27 in$400 No 575Scorpion 60 AC Fun-fly aembaitc plant 60 power spans 501/s in$1150 No 576Serendipltyl ndant EZB racold-helder opens 17% in$325 No 577Halflite CL /sA Combat plane has toem wing spans 30 inS225 No 576Schwelzer 1-268 AC Quarter-scale Sailplane spans 125 Tow plan sheets$1475 No 579Lockheed P438 CL Pmcision Scale WW II fighter far twin 4So spans 55 iv Fowler flaps etc Three plan sheets$1000 No 580Parnall Pixie PP Rubber Scale Gelden Age British biplane 112 scale spans 31/a in$375 No 581Gee Bee Model Y AC Golden Age Aecer spans 72 scale 60 power Thwe plan sheets$1175 No 582Heinkel 100 CL Sport Scale 01W II fighter tor 40 engine spans 61/o otnecaim mostly car/deard Two plan shts$1250 No553Spoetwagon AC Radis-ised sport FF model spans 54 ones 10115 engine$700 No 584Happy Days CL Intermediate trainer/Stunter spans 42 in. uses 20135 engine$575 No 585Dragonfly PP fligh-porfermance P-30 Aahber ship opens 30 iv weighs 50 gramoS400 No 586Snapdragon AC Fan-fly/sporaiter far 25130 engines spans 45 in$600 No 587Pilatus PC-9 CL ProOle Scalelfltunterloportster spans 50 in. ows 29135 engine$550 No 588Malah AC Slope-Searing Sailplane opens 41 ones 2 AC channels5425 No 589Vlckera Weflesley AC Spon Scale WW II bomber spans 00 in. uses 40 4-cycle engine Two p100 sheets no dec$1250 No 590Bud Lite Laser Stunter CL Stoeter le scalelike spain 63 uses 60 engine Two plan sheets$1050 No 591Focke-Wulfi FW 190-A AC Sport Scale 01W II fighter spans 50 in. uses 35145 2-strake engine Twa plan sht no doc$1350 No 592 ET CL trainerlapodster ones 05 electrc power 0-cell bafler5 pack Wingspan 24 in $ 475 Circle numbers plans wish order 193 414 490 531 554 570 579 587 239 440 506 533 555 571 580 588 262 447 512 534 559 572 581 589 310 454 514 535 561 573 582 590 314 457 521 539 563 575 583 591 326 460 522 541 565 576 584 592 332 465 525 544 568 577 585 593 386 478 528 549 569 578 586 594 Plan price inCIUdOS first Class postage US delivery Air Mail over 300 miles ordBrs non-US address lease add $250 Air Mail asIa e handlin Ian Make Check money order payable US funds drawn US bagk Model Aviation c/c AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ AMA No ______________ EJ AM F STREET CITY ZIP RC Soaring/Blakeslee Continued page 169 gust however may abte wanted very thankful large number people have contributed project continue support following excerpt taken last progress report 4-15-87 point entire measurement sys tem has received considerable improvement thanks contributions time money equipment David Fraser Fraser-Volpe Corp PA Professors AJ Smits SH Lam HC Curtiss Princeton University Ray Olsen AZ Professor MD Maughmer Penn State Herk Stokely Soartech MKS Instru ments MA Scientific Solutions Inc OH have also received help lee Murray WI Professor Mark Drela MIT Preben Norhoim Denmark have overwhelming response initial letter asking help building wind tunnel models addition listed above following have also offered build models us Chuck Anderson TN Jerry Arana CA Ken Bates Ken Shaw MI Tony Beck VA Ron Carter UT Jack Cash MD Bart Como TX Seth Dawson Co CA David Fraser Co PA Duane Harris IA Peter Illick CO Harley Michaelis WA Carl Mobs MI Mark Nankivil Co MO Ted Off CA RJ Ostrander NJ Tom Pratt OH Mike Reed CA Joe Rumineki NC Ty son Sawyer NH Gordon Stratton NY Doug Stout NJ Jeff Troy VA Over last several months Jerry Jackson TX Armin Saxer Switzerland Chuck Gris wold CA HJ Rogers OH Brian Smith OH Tom Yamokoski OH Trey Wood AL Karl Widiner CA Todd Enlund LA have helped us either making contributions offer ing build wind tunnel models hope no has left out begin taking measure ments will sure let know Thanks again Everyone knows important experi ments Michael John Im pleased able pass along progress reports ac knowledge Sailplaners helping models other support hear more good reports about existing Selig airfoils further improvements can made im pact model Sailpianes should tremendous Want electrostatic stabilizer October 1987 column description Maynard Hill workings electrostatic stabilizers generated lot interest readers wrote requesting copies Maynards full write-up interested purchasing ready-made sta bilizer may purchase Maynard $174 plus $28 required two polonium io nizers Contact Maynard Aero Probe Technol ogy 2001 Norvale Rd Silver Spring MD 20906 1988 Ohio Cup contests Dayton Area Ther mal Soarers DARTS will host series four contests total fliers best two scores will win Ohio Cup Dates June 1819 August 20-21 Jim Martin 513/376-9046 will CD June contests Gale Lerach 513/429-2543 Jerry Shape 513/843-5085 will CDs August ones Sounds like great idea State wide bragging rights 172 Model Aviation 0 03 0 coo Coo -set o g 513 zo Os es - 00as -2 0 ases n o 2 5 Gac 0 V Ces ens 0 e V 00 oat C 0 SE 8200 00 C n 82 01 C -B 0
Edition: Model Aviation - 1988/08
Page Numbers: 54, 55, 167, 168, 169, 172
5 1NEW Control Systems Laboratories ATRCS Airtronics Module SP good RC system very popular Sailplane fliers What would think someone told could transform SP equal sophisticated radio worldfor $300 think lot people would jump chance Granted rudder-steered polyhedral planes dont need high-tech set hut fliers planes hav ing ailerons flaps ability kinds tricks reasonable price will wel comed people Control Systems Laboratories will performs miracles Eugene En gelau Thomas Mroz formed CSL manufacture install retrofit computer elec tromes will turn old pumpkin Rolls Royce first PC boards SP radio mods other radios will added shortly Gene Tom both members South Bay Soaring Society great news us because understand special needs mod ern Sailplanes call system ATRCS stands Advanced Technology Radio Control System Its pronounced A-Tracks Since computer-on-a-chip business way over head following description copied CSLs introductory flyer microprocessor used ATRCS pow erful low-power-consuming no additional batteries required 16-MHz 16-bit-wide-bus cal culating machine characteristics translate computational power four times greater similar system being offered today Calculat ing power such means will never see jitter jumpiness control surfaces never experience delay between time push stick flip switch control surface actually moves ATRCS powerful control system having very comprehensive set features designed RC flying today morrow its features Multiple-setup memory four planes No backup battery required Auto setup Save fea ture avoids setup errors Type-of-plane setup templates Easy setup new planes changes old setups Trim travel adjustments individual sur faces Allows correction servo linkage mis matches Mode definition Allows configure transmitter controls suit own taste Advanced mixing functions Full trailing edge camber adjustment Crow ailerons Up/flaps Down aileron-to-flap flap-to-elevator elevatorto-camber etc Continued page 167 Want know about ATRCS A-Tracks transmitter mod available Control Systems Laboratories Theres lots info Byrons column month Photo depicts display switch board Front memory board front Airtronics 7SP Mod ule transmitter ATRCS allows imaginable kind control mixing control throw limiting trim adjusting etcand can store four different setups No additional batteries required SM Sailplanes 4-meter AS-W 17 fifth-scale model Kits have fiberglass fuselages obechi sheeted foam wings Made USA too SMs products sure look like beauties 54 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Wlnnebago Dr Sedalia CO 80135 Transmitters flip-down front cover allows easy access ATRS liquid crystal display LCD six pushbuttons used set up transmitter anything can think Roland Kerns 23-ft-wingspan Grab Twin Astir sits rest German modeler plans bring 88 Nats some demo flights Theres info column SM Sailpianes Santa Monica CA H-1O1 Salto 1/3-scale Sailplane looks great both ground flight Model spans 44 ters 172 14 4 GRAMCO POCKET PROP Adjustable Returning Toy Quality Hardwoods Left Right Handed Flies Approx 25 yds Illustrated Directions $15 Includes Postage THE GREAT AMERICAN COMEBACK 4554 SUNRISE BLVD DELRAY BEACH FL 33445 ~ TR260 Freud Aerwduik Deaigu 114 Stand-off Scale Kit span Length66 Wing area 1213 sq Weight.. 165 lbs Power035-040 G38-G62 FuE lit $21500 plus shIpping *1100 Everything scratch kit plus precut wood pets contptete mod z *AII wood & foam csnstructlen eFillergIas cowl 6 pants *2plece plug-in wings Foam core airfolled tail surfaces No tail brace wires required FOR MORE INFO ONTO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Luke IA 5136 DELUXE Kit $28500 plus shIpping $1100 Everything tel kit bat stag spars lestafled wingS stab turtle deck hatch & fin tee-abteneti stilt illS haha MAKES DUILfhst QUICK 115 SCALE 4ISTR ENG WACO HKS -777812-4/STR GREAT LAKES TR6490-4/STR GREAT LAKES SPL 6490-4/STR PLANS 0 / PG COWL 0 / ECONO PAC 0 14 GIANT SCALE BIG ENG WACO HKS -79975 25-4 ENG GREAT LAKESTR80 20-3 ENG GREAT LAKES SPL 80 20-3 ENG PLANS 0 IFS COWL 0/PS PANTS 0 ECONO-PAC 0 / GREAT LAKES 0 114 SCALE FARMAN MOUSTIQUE 80 45- 604/STRPLAN 0 * 2 RIC ANTIQUE MODELS * BILL WINTERS ROOKIE72 span45 4/STR DEBOLTS LIVE WIRE TRAINER 25% -60 span 25 2/STR -40 4/STR S 0 ea ADO $300 S & H CONT us 10 SASE tNFO NORMAN ROSENSTOCK 124 GRANADA ST ROYAL PALM BEACH FL 33411 August 1988 55 R ECI YOUR EYES IN COMFORT WI IN NFORDA3LE HANDSOME vision tmportant sense high-quality scratch resistant polycarbonate lens safety glasses must modelers Available clear gray dark green light green gradient mirrored gray lens Adjustable temples Wide view ANSI Z87 approved GREAT PRICES Iwant protect eyes style comfort U Clear-$725 eaL Gray$855 ew U Lt Green$855 ea UDk Green-$855ea UGradientMirmr-$lOSOea NAME ADDRESS cnYsrxiyztp Send check money order C&C Enterprises 141 Willa Dr Columbia SC 29209 SC Residents add 5% Sales Tax lius shipping $1100 Cowl pasta campy landing gear daet Inner cores ler shrg tail naufaces turtle deck hatch A monthly publication Covering International RC Soaring Scene US $17 yr 21/yr 1st Class In Canada/Moxlco $22/yr US funds Asia & Pacific $28/yr US funds Europe UK $28/yr US funds Surfaco Mail Foreign $18/yr USfunds RC SOARING DIGEST PO Box 1079 Payson AZ 85547 airplane will roll same direction same speed upright upside down 0-g dive true because roll moment generated equal opposite changes angle attack left wing right Within wings unstalled range angle tack change lift per change angle attack approximately constant cause change matters base angle attack important Note also because equal opposite change yawing airplane will cause change total lift gener ated nice feature able roll thermal having simultane ously compensate pitch However air planes high rates yaw roll possibility gyroscopic coupling yaw roll axes yielding unex pected pitch-up response due gyroscopic precession problem coordi nated aileron aircraft since axis being spun time Swept-wing arrangements couple yaw roll much like dihedral doesbut some important differences yawed swept wing generates roll moment differ ence effective length wings wings still produce roughly same amount lift since have same area roughly same angle attack wing longer other has leverage means roll moment swept wing related to tal lift being produced yaw angle plane yawed 1 g roll mo ment will same independent speed pulling three gravities roll moment will three times great 0-g dive no roll mo ment upside down 1 g roll moment reversed Radio Con trol pure swept-wing model dihe dral ailerons will very tricky air plane fly well swept-wing airplanes ailerons emphasis rudder coordina tion will prevent unexpected responses Summary conclusions dihedral arrangement crucial handling roll axis Dihedral provides coupling between yaw roll roughly proportional Equivalent Dihedral Angle EDA yaw angle rolling moment wing can com puted based its dihedral arrangement yaw angle airspeed wingspan wing area planform Different dihedral arrangements have same roll moment otherwise equal V-dihedral wing said have Equivalent Dihedral Angle equal dihedral angle V-dihedral wing Equivalent Dihedral Angle given dihedral arrangement may easily calcu lated Various dihedral arrangements have anal ogies aileron arrangements Transitional maneuvers weak point rudder-and-elevator airplanes Generous dihedral long tail moment arm large verti Step future AVIATION Become Aviation Electronics Technician learn repair maintain electronic equipment used aboard aircraft Actual planes used training Hangar runway campus Train just 19 months Jobs waiting CALL NOW 1-800-758-5757 CLOVER PARK Vocational Technical Institute 4500 Steilacoom Blvd SW Tacoma WA 98499-4098 FAA Repair Station #4466 cal stabilizer lightweight wing tip pan els tail group minimize transitional shortcomings roll moment dihedral wing dependent overall angle attack Swept wings behave quite differently dihedral wings RC Soaring/Blakeslee Continued page 54 Adjustable preset trims Launch Cruise Speed Simple switch-selection simplifies pilots work during critical launch sequences In-flight setup changing Switch planes config uration on-the-fly try Out new adjustments enhance performance during particular events Landing position flap threshold selection Al lows set trip-point triggers aile ron spoiler deployment Works Airtronics FM/PPM FM/PCM receivers Initially Module 7SP Other brands added deal contact CSL make reserva tion have transmitter converted will send shipping kit sending transmitter work takes about 10 days ATRCS-modified transmitter re turned users manual explains program using examples illustrations Dur ing setup sequence asked inputs through menu-style prompts Special program features arc designed help enter correct information prevent accidental loss set ups Full information available fmm CSL 1361 Fallen Leaf Dr Milpitas CA 95035 can call 408 946-4142 SM Sailplanes Vince Parizek produces limited number Sailplane mostly Scale kits Kits may best word describe since Vinces planes appear pretty completely fin ished Lets have Vince tell us about himself well get specs two big Scale Sallplanes Just let know about background have involved RC Gliders years have building own Gliders quite some time grew up Europe became interested Scale Glid ers Since arriving States 1968 found basically no Scale ships made concerned however because could purchased Germany past few years drop dollar has put price out reach average modeler So decided offer experience Scale enthusiasts reasonable prices Because still hobby make kit myself production low waiting list stands about four weeks SMs two Scale ships Start & Flug H101 Salto 44-meters wingspan fourmeter Schleicher AS-W 17 Both have white gel coat epoxy glass fuselages foam wings sheeted obechi wood wings have ply wood spars plus carbon fiber reinforcement Aile ron spoiler areas reinforced twoounce glass cloth Tail surfaces also obechi covered foam Individual specs Salto fuselage 67in long wing area 1140 sq weight 85 lb wing loading 16-18 oz per sq ft airfoil modified Ritz II AS-W 17 specs include fuselage 59-in long wing area 1020 sq weight seven pounds wing loading 14 oz per sq ft airfoil modified Ritz III Both planes available basic com plete kit explained easily listing what complete kit gives leading edges wing tips installed shaped precut aile rons spoilers installed precut plywood pieces radio installation set decals Salto complete kit includes wheel basic complete kits AS-W 17 $289 $385 respectively Salto kits $425 $515 full-size AS-W 17 has 20-meter span model / scale Seventeen has enormously popular subject modelers H101 Salto much rarer subject Its maker offshoot Glasfiugel factory first flew 1971 wings Standard August 1988 167 Libellebut shortened 136 meters 44meter model thus /3 scale Salto German word loop can imagine fully stressed aerobatics model certainly looks lovely air Its best contact Vince further details exact ordering information address 2703 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 828-2300 Want see 23-ft-span Sailplane Remember giant Grob Twin Astir Scale Sailplane featured December column beauty made Roland Kern Roke Modelle kits Wannweil FR Germany Well Tony Arnoux Miami FL Roke importer says Roland planning attend AMA Nats Vir ginia will put up some demonstration flights Twin Astir flights expected Soaring site either before after days competition flying should really tract crowd Roland also plans enter Scale competition normal -sized planes four-meter ASK-18 Multiplex lend ing Roland radios US frequencies can fly both planes Mr Kern will taldng orders Twin Astir kitsfor about $2500 News Paris FAI/CIAM meeting John Grigg chairman ClAM F3B Subcommit tee passed along two important pieces news April meeting 1 New rules limat winch power 2 1989 F3B World Champion ships will France4Okm south Paris new winch rules set minimum internal re sistance values both winch motor battery 15 six milliohms respectively stalled-winch condition winch does meet minimums permanent fixed resistance must installed minimums will limit winch power about 16kw line pull 40kg less weak-link rule dropped new rule adopted immediately safety rea sons John said internal-resistance idea came Czech subcommittee representative Two-time World Champion Rolf Decker built recording volt-ohmmeter demonstrated subeommittec Paris winch must al lowed start must stalled quickiy less revolution RoIf did piece rope wrapped around drum ohmmeter must read resistance quickiy before heat builds up meters resistors increases readings World Champs other contests matter organizers will need test winch motor battery set seal resist ances nothing can altered US F3B final ists will need measure adjust winches L WANNA RACE MORTHFAT ARFA L BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs leformatioh Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVE FRANKLIN MASS 02038 Tel 617 528-4043 203 673 -2000 before finals Schematics test apparatus will made available ASAP word 16kw power standard Ford starter motor commonly used US can produce less power souped-up Fords US team used Achmer last year Stock Ford motors said have internal resistance 18-19 milliohms John said goal eventually get winch power down 11kw new rule appears workable solu tion very difficult problem F3B competition will much better LSF news League Silent Flights new ficers President Bob Steele Fort Wayne IN Vice-president Ray Hayes Romeo MI Secretary Jim Martin Xenia OH Treasurer Susie Lipp Defiance OH LSFs first order business get ac tive members mailing list An active mem ber has communicated LSF last two years sent voucher Level IV V current address dont fit either categories wish stay mailing list drop card LSF PO Box 647 Mundelein IL 60060 USA request ac tive status new 1SF officers asking Soaring clubs around country consider holding LSF re gional contest August September 1988 would like see 15-20 regional contests held Some already scheduled club interested just write call Ray Hayes 69598 Brookhill Dr Romeo MI 48065 phone number 313 752-6163 information first-rate contests well-attended because prior national publicity highly prized LSF plaques presented winners Both club 1SF make money winners regionals will invited 1989 LSF Internats tentatively scheduled Uti ca MI mid-August new Executive board dedicated revi talizing LSF helping restore spirit RC Soaring USA anything can help let know can help sending postcard cur rent addresstoday NSS news 1988 National Soaring Society Excellence Award Program EAP being run Sailplane editor Doug Dorton Scoring same last year cards distributed members sent EAP cards last year NSS member would like give program gobut didnt receive cardsdrop note Doug 3058 Bernina Dr Salt Lake City UT 84118 can call him 801 966matcnua rurrormance y5Iem TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS OBlendo4Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS 1625 way EAP works contests March through November meet simple cri teria have least 10 contestants score respect winners score earns certain number points member accumulates points over six contests wins need fill out card after contest have CD sign mail Doug nice merchandise prizes won theres no reason members shouldnt have try Sources materials John Wyss report making Kevlar fuselages whieh appeared June 1988 column mentioned gets Key lar Safe-T-Poxy George Span Aero space Composites Actually George handies sorts high-tech materials can check him needs PO Box 16621 Irvine CA 92714 Anyway mention Aerospace reminded recently saw list sources various specialized materials Marshall Longs Texas Soaring Conference Magazine As public service Ill reprint Marshalls list along very brief rundown what compa nies known Bob Sealy s Quality Fiberglass 521 96th Lane NE Blame MN 55434 Telephone 612 7802737 Bob makes several types fuselages Slope Thermal Cross-Country Sailplanes along foam wing cores Bob will cut type foam core wing profile person 10 FT B-17 PLANS $3500 3 CATALOGS 5900 THE BEST iN SCALE HOLMAN PO BOX 741 SAN BERNARDINO CA 92402 Send SSAE catalog iheet complete line KIlL RhBX$100 RIOOE catalog MACHINERY& TOOLS P0 Boo 536Y 3044623530 Hurricane Wr/ 25526 coffer complete selection lathes mills end tools viation Modeler 168 Model Aviation RADIO SOUTH K4C AUTHORIZED SERVICE CENTER Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Radio South Batteries 500 ma Pack 48V1100 Futaba conn1350 800 ma Pack 48V1950 Futaba conn2275 1200 ma Pack 48V2100 Futaba conn2425 TX batt Futaba G-Series PCM2450 Featuring fast service j~$ qualified peeple t latest equipment Including SPECTRUM ANAL YZER FREQUENCY CONVERSIONS AM4 Frequency Comnunee Approved TVA1 LAML~I We stock Futaba JR radios YS engines parts Hatori headers pipes Repair Heli Sets Gyros Orders COD MC American Express Pricessu blect change noticeOPEN 8-5 CST904 478-6745 %........ 43 West Nine Mile Rd Pensacola FL 32514 provide templates him use Cores white foam will have spar slots cut out Bob now making Bob Dodgsons hi selages epoxy/glassand doing beautiful job Viking Models USA 2026 Spring Lake Dr Martinez CA 94553 Telephone 415 6890766 Jerry Slates has very large selection fi bergiass fuselages choose including five Scale types catalog shows pictures fu selages available gives wing profile approximate wingspan can used Cliff Ol iver San Antonio bought Jerrys fuse lages called Contestant beautiful piece workmanship 53 long can carry wingspan up 148 E-205 profile kit comes clear canopy top tray Cliff will use Cross-Country ship September Corpus Christi 20K closed-course X C meet Wilshire Model Center 2836 Santa Monica Blvd Santa Monica CA 90404 Telephone 213 828-9362 Bob Ratzlaff recently purchased Wilshire Maddy Weiss determined keep up standards established Maddy late husband Hans Wilshire has special Sasiplanes-only catalog full kits kinds neat not-always-easy-to-find accessories scratch-builder possible order kit priced anything $30 $2000if wallet big eyes SR Batteries Box 287 Bellport NY 11713 Telephone 516 286-0079 company has offer just batteries although its main effort example carries Deans con nectors maldng own battery leads changing over servos own type equip ment An interesting item SR Piggy Back transmitter pack important person going record flight working higher LSF levels fly Electrics SR handles Ace RIC chargers Heavy Duty Digipace cyclers latter being made specially SR Batteries Aircraft Spruce Specialty Co PO Box 424 201 West Truslow Ave Fullerton CA 92632 Telephone 800 824-1930 Aircraft Spruce supplier full-size aircraft builders items sells interest modelers catalog outstanding Youll find sorts cloth resin tools aircraft construction Cadillac Plastics Houston TX Telephone 713 674-2400 See local storeBB Cadillac sells lot different items including 14-mil lar covering fiberglass surfacing vacuum-bag wing construction technique Vacu um pumps can purchased hardware stores dont come cheap purchased new Hobby Woods PO Box 48 Linden CA 95236 Telephone 209 887-3974 Marshall Long didnt include Hobby Woods list taking editorial license Id like add because excellent service quality balsa Ive gotten over years scratchbuilder try 11W balsa needs Gougeon Brothers PO Box X908 Bay City MI 48707 Telephone 517 684-7286 other company Marshalls listI noticed Gougeon Brothers mentioned Gordon Stratton Eastern Soaring Lines newsletter seems though should included GB primarily supplier fiberglass boatbuilding industry source West Sys tem epoxy 105 resin 205/206 hardener 301 vacuum pump epoxy dispensers fiberglass cloth carbon fiber Progress Princeton low-Reynoldsnumber airfoil tests repotted Michael Selig John Donovan stage have instrumentation support equipment run experiments lift model will measured spe cially designed one-component force balance drag will measured wake rake method will involve traversing airfoil wake single miniature total-head-pressure probe Other measurements will include gle attack free-stream dynamic pressure static pressure upstream downstream model quantities well oth ers will digitized through 12-bit A/D con verter connected IBM PC/XT data stor age analysis thorough description experimental apparatus procedure will given Soartech following experiments Sometime February plan begin stalling system wind tunnel have successful predicting work tests will begin end however clear experiments will have finished August 1988 because Michael finished Prince ton last August John will finish August have 12 wind tunnel models built seven currently under construction Clark-Y Stan Watson IL E193 Stan Koch TN E214 Terry Luckenbach PA S4061 E387 Forrest Miller NJ E387 S3021 S4233 Bob Cham pine VA MB253515 Mike Bame Jerry Krainock CA WB 135/35 WB 140/35 Woody Blanchard VA S2091 Dave Jones Bruce Baker Mike Chiddick Roger Egginton Lea Roger England 54061 Mark Allen CA E205 Dave Batey Co WI HQ 15/90 RoIf Girsberger Co Switzerland HQ 25/90 Ray Olsen Co AZ S4064 Stan Watson IL FXlO-100 Rich Border NJ have duplicates some airfoils can check possible degree performance variability between different models After start testing some models still plan design new airfoils have built tested Given have until end AuContinued page 172 5151JET SERIESThe Proud Bird theProd Bird planes feature balsadesigned meet construction Designed wIth thegsPRA rorela -scale model 111 accept intermediate flyer mind will120 ralesT5is 1/4 terill jet accept 2125 size engineuse60120 ci sIze engines rear exhaust engine ex ceptional performamceDet allEpOap glass faselagewIth foam wing construction full kIt $15111 Inc hassles darted fanSkyhaaxSemikit also avaIlable Ins wood $12511 SpecIal IntrodaPlease add $1101 shipping handling $411 flu Pen Sent check MDadd 6% sales tax -or Mastercard Visa -110 add $3013g5S54477 PARRISH AiRCRAFT Top Surkpy ot waxets formula ODart Experimental 255W49thTe, $9500 x $5 SIPTipersharktwoplace full sloe aircraft amlatiam Pta 33315 August 1988 169 No 593 Taylorcraft $1000 RO Sport Scale lightplane builds standard two-placer clippedwing air show stunter Span 70 58 30140 two-stroke 40/48 four-stroke engine Two plan sheets no documentation No 594 P-61 Black Widow $800 CL Profile Scale WW II twin-engine night fighter uses 19/25 engines spans 491/2 No 193Stiletto CL Saint model McDonald winner 1076 1980 1982 FAI World Champs$ 375 No 239Blue Birds AC Ken Willards formation plane 4-channel 10115 power$ 375 No 262chmaster CL Crash-prasf trainer two sizes15/30 35/40 pnwer$ 125 No 3101930 Fleet BIplane AC Sport Scale far 35/40 4-channel Wingspan Sit scale Two sheets5 625 No 314Drake II RC Ken Willards tying boat 3-channel 15-power Fly land wifh mmovable gear$375 No 326Taylor cub AC Don Sn/Is Schoelyard-Scale 0495 2-3 channel Spans 50 inS350 No 332Zephyr AC Small 2-channel gilder fer hood-Isanch 010w thermal slope soaneg5 200 No 386Laser 200 AC Sport Scale mplica championship Aerohahc filer Uses 40 power 4-5 channel Two sheets51075 No 414ElectrIc Sparky RC Elecfric fan filer 05 motor 3-channel RC scaled-up 1939 rahber-power favorite$050 No 440cavalIer AC Old-Timer-like new design has huge wing slow easy flights Par 35 pwr 3 ch Two sheets$1725 No 4471/2A Miss America AC Old-Timer Texaco model 040 glow 2-channels$650 No 454Sweet P-30 FF Neat stick-and-dense Qatrisor gabber P-30-clans model a contest-wusner$200 No 457Spectra AC Electric-power ts 06-sloe motor ones 3 different wings sport searing aembaSco5700 No 4604-40 AC Shnelder-wing sport filer 4-cycle 40-size engine 4 channels$650 No 465Blue Max II AC Fan-fly sportater tsr 40-sire engines spans 52 Lightweight stractum$700 No 478Buttercup AC Cute nOun sportster uses micra 2-ch AC pulse-insider Spans 27 0201035 power$300 No 490Weekender AC Low-wing sport tier 20-ode 4-stroke engine spans 47 in$575 No 506Playmate AC Sport filer 3 RC channels 10125-one engines spans 50 in$650 No 512Extra 230 AC Giant Scale acrahatic plane spans 8 ones Quadra engine Two plan sheets$1650 No 514Henry T AC Sportster tor IsA 2-3 channel 00 spans 52 han adlastable wing flapsS475 No 521Comet Jr clipper Plus 35% AC Old-Timer sporaiter leA engine 2-nh AC spans 40 0 No 522Sorts Pitta AC Reminder-scale bipo far 40160 engines spons 43 Two plan sheets$1050 No 525NI-Tech 2002 00 Canard ducted-fan far 45 engines spans 39 Two sheets$1000 No 528Swallow AC Lightweight holdegger 40-size four-stroke engines spans SB in$025 No 531TerrIble Coupe PF Aubber-powerad Coope driloer spans 40 contest-winner$475 No 533Cessna C-37 AC Schoolyard Scale famoas 305 plane 049110 power 2-ch spans 42 in$500 No 5341938 Challenger AC Texaco Old-Timer spans 47/o 040 engine 2-channel AC$550 No 535Agrix AC AMA Class 0 Sailplane spain 110 uses 4-channel AC system$725 No 539Simitar Slow-Motion 15 AC Tailless flying wing tar 15 engines spans 60 ones 3-ch AC$350 No 541Parakeet AC Sport hiplane tsr 15125 engines 3-channel AC esfoipment spans 42 in5675 No 544Heron AC 511 Winters sport Electric tsr geamd 075 motor 3 AC ch spans 65 in$575 No 549cricket AC Sport scalelike tor 20-san two- four-strake engine spans 40 in$675 No 554Super Doubler II AC Sport AerobaticsPylon far 40/46 toar-strake engine spans 57 in$575 No 555Double Duty AC Basic/advanced trainer 10115 engines spans either 67 en 50 Two plan sheets$1075 No 559Low Voltage AC Electric-power oporfater fnr 035 motor spans 44 inS475 No 561Wild Ham RC Tri-motar sponster spans 63 ones 25 engines Two plan sheets5900 No 553to AC AMA Class B 2-Meter Sailplane has 703/e-in-spOn toam wing$725 No 565Sea Loon AC Pod-and-hanra seaplane 15 power spans 4W/u in$675 No 568Avro 560 FF Mini-electric Scale 23 British utralight spans 30 in5200 No 569Electroagmak AC Electric aesehatic plane spans 44 uses 00 motor$550 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-balas bout-up surtaces$400 No 571Voyager CL Sorta-Scale A-powemd voodoo amund-the-world plane spans 46/e in$225 No 572TR-260 AC Sport Scale Aesehatic plane 4-steeke 60/65 power spans 60 in$1100 No 573Pink Lady F-40 CL Bill Wisniewokis Fonnala 40 Speedster 40 power spans 27 in$400 No 575Scorpion 60 AC Fun-fly aembaitc plant 60 power spans 501/s in$1150 No 576Serendipltyl ndant EZB racold-helder opens 17% in$325 No 577Halflite CL /sA Combat plane has toem wing spans 30 inS225 No 576Schwelzer 1-268 AC Quarter-scale Sailplane spans 125 Tow plan sheets$1475 No 579Lockheed P438 CL Pmcision Scale WW II fighter far twin 4So spans 55 iv Fowler flaps etc Three plan sheets$1000 No 580Parnall Pixie PP Rubber Scale Gelden Age British biplane 112 scale spans 31/a in$375 No 581Gee Bee Model Y AC Golden Age Aecer spans 72 scale 60 power Thwe plan sheets$1175 No 582Heinkel 100 CL Sport Scale 01W II fighter tor 40 engine spans 61/o otnecaim mostly car/deard Two plan shts$1250 No553Spoetwagon AC Radis-ised sport FF model spans 54 ones 10115 engine$700 No 584Happy Days CL Intermediate trainer/Stunter spans 42 in. uses 20135 engine$575 No 585Dragonfly PP fligh-porfermance P-30 Aahber ship opens 30 iv weighs 50 gramoS400 No 586Snapdragon AC Fan-fly/sporaiter far 25130 engines spans 45 in$600 No 587Pilatus PC-9 CL ProOle Scalelfltunterloportster spans 50 in. ows 29135 engine$550 No 588Malah AC Slope-Searing Sailplane opens 41 ones 2 AC channels5425 No 589Vlckera Weflesley AC Spon Scale WW II bomber spans 00 in. uses 40 4-cycle engine Two p100 sheets no dec$1250 No 590Bud Lite Laser Stunter CL Stoeter le scalelike spain 63 uses 60 engine Two plan sheets$1050 No 591Focke-Wulfi FW 190-A AC Sport Scale 01W II fighter spans 50 in. uses 35145 2-strake engine Twa plan sht no doc$1350 No 592 ET CL trainerlapodster ones 05 electrc power 0-cell bafler5 pack Wingspan 24 in $ 475 Circle numbers plans wish order 193 414 490 531 554 570 579 587 239 440 506 533 555 571 580 588 262 447 512 534 559 572 581 589 310 454 514 535 561 573 582 590 314 457 521 539 563 575 583 591 326 460 522 541 565 576 584 592 332 465 525 544 568 577 585 593 386 478 528 549 569 578 586 594 Plan price inCIUdOS first Class postage US delivery Air Mail over 300 miles ordBrs non-US address lease add $250 Air Mail asIa e handlin Ian Make Check money order payable US funds drawn US bagk Model Aviation c/c AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ AMA No ______________ EJ AM F STREET CITY ZIP RC Soaring/Blakeslee Continued page 169 gust however may abte wanted very thankful large number people have contributed project continue support following excerpt taken last progress report 4-15-87 point entire measurement sys tem has received considerable improvement thanks contributions time money equipment David Fraser Fraser-Volpe Corp PA Professors AJ Smits SH Lam HC Curtiss Princeton University Ray Olsen AZ Professor MD Maughmer Penn State Herk Stokely Soartech MKS Instru ments MA Scientific Solutions Inc OH have also received help lee Murray WI Professor Mark Drela MIT Preben Norhoim Denmark have overwhelming response initial letter asking help building wind tunnel models addition listed above following have also offered build models us Chuck Anderson TN Jerry Arana CA Ken Bates Ken Shaw MI Tony Beck VA Ron Carter UT Jack Cash MD Bart Como TX Seth Dawson Co CA David Fraser Co PA Duane Harris IA Peter Illick CO Harley Michaelis WA Carl Mobs MI Mark Nankivil Co MO Ted Off CA RJ Ostrander NJ Tom Pratt OH Mike Reed CA Joe Rumineki NC Ty son Sawyer NH Gordon Stratton NY Doug Stout NJ Jeff Troy VA Over last several months Jerry Jackson TX Armin Saxer Switzerland Chuck Gris wold CA HJ Rogers OH Brian Smith OH Tom Yamokoski OH Trey Wood AL Karl Widiner CA Todd Enlund LA have helped us either making contributions offer ing build wind tunnel models hope no has left out begin taking measure ments will sure let know Thanks again Everyone knows important experi ments Michael John Im pleased able pass along progress reports ac knowledge Sailplaners helping models other support hear more good reports about existing Selig airfoils further improvements can made im pact model Sailpianes should tremendous Want electrostatic stabilizer October 1987 column description Maynard Hill workings electrostatic stabilizers generated lot interest readers wrote requesting copies Maynards full write-up interested purchasing ready-made sta bilizer may purchase Maynard $174 plus $28 required two polonium io nizers Contact Maynard Aero Probe Technol ogy 2001 Norvale Rd Silver Spring MD 20906 1988 Ohio Cup contests Dayton Area Ther mal Soarers DARTS will host series four contests total fliers best two scores will win Ohio Cup Dates June 1819 August 20-21 Jim Martin 513/376-9046 will CD June contests Gale Lerach 513/429-2543 Jerry Shape 513/843-5085 will CDs August ones Sounds like great idea State wide bragging rights 172 Model Aviation 0 03 0 coo Coo -set o g 513 zo Os es - 00as -2 0 ases n o 2 5 Gac 0 V Ces ens 0 e V 00 oat C 0 SE 8200 00 C n 82 01 C -B 0
Edition: Model Aviation - 1988/08
Page Numbers: 54, 55, 167, 168, 169, 172
5 1NEW Control Systems Laboratories ATRCS Airtronics Module SP good RC system very popular Sailplane fliers What would think someone told could transform SP equal sophisticated radio worldfor $300 think lot people would jump chance Granted rudder-steered polyhedral planes dont need high-tech set hut fliers planes hav ing ailerons flaps ability kinds tricks reasonable price will wel comed people Control Systems Laboratories will performs miracles Eugene En gelau Thomas Mroz formed CSL manufacture install retrofit computer elec tromes will turn old pumpkin Rolls Royce first PC boards SP radio mods other radios will added shortly Gene Tom both members South Bay Soaring Society great news us because understand special needs mod ern Sailplanes call system ATRCS stands Advanced Technology Radio Control System Its pronounced A-Tracks Since computer-on-a-chip business way over head following description copied CSLs introductory flyer microprocessor used ATRCS pow erful low-power-consuming no additional batteries required 16-MHz 16-bit-wide-bus cal culating machine characteristics translate computational power four times greater similar system being offered today Calculat ing power such means will never see jitter jumpiness control surfaces never experience delay between time push stick flip switch control surface actually moves ATRCS powerful control system having very comprehensive set features designed RC flying today morrow its features Multiple-setup memory four planes No backup battery required Auto setup Save fea ture avoids setup errors Type-of-plane setup templates Easy setup new planes changes old setups Trim travel adjustments individual sur faces Allows correction servo linkage mis matches Mode definition Allows configure transmitter controls suit own taste Advanced mixing functions Full trailing edge camber adjustment Crow ailerons Up/flaps Down aileron-to-flap flap-to-elevator elevatorto-camber etc Continued page 167 Want know about ATRCS A-Tracks transmitter mod available Control Systems Laboratories Theres lots info Byrons column month Photo depicts display switch board Front memory board front Airtronics 7SP Mod ule transmitter ATRCS allows imaginable kind control mixing control throw limiting trim adjusting etcand can store four different setups No additional batteries required SM Sailplanes 4-meter AS-W 17 fifth-scale model Kits have fiberglass fuselages obechi sheeted foam wings Made USA too SMs products sure look like beauties 54 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Wlnnebago Dr Sedalia CO 80135 Transmitters flip-down front cover allows easy access ATRS liquid crystal display LCD six pushbuttons used set up transmitter anything can think Roland Kerns 23-ft-wingspan Grab Twin Astir sits rest German modeler plans bring 88 Nats some demo flights Theres info column SM Sailpianes Santa Monica CA H-1O1 Salto 1/3-scale Sailplane looks great both ground flight Model spans 44 ters 172 14 4 GRAMCO POCKET PROP Adjustable Returning Toy Quality Hardwoods Left Right Handed Flies Approx 25 yds Illustrated Directions $15 Includes Postage THE GREAT AMERICAN COMEBACK 4554 SUNRISE BLVD DELRAY BEACH FL 33445 ~ TR260 Freud Aerwduik Deaigu 114 Stand-off Scale Kit span Length66 Wing area 1213 sq Weight.. 165 lbs Power035-040 G38-G62 FuE lit $21500 plus shIpping *1100 Everything scratch kit plus precut wood pets contptete mod z *AII wood & foam csnstructlen eFillergIas cowl 6 pants *2plece plug-in wings Foam core airfolled tail surfaces No tail brace wires required FOR MORE INFO ONTO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Luke IA 5136 DELUXE Kit $28500 plus shIpping $1100 Everything tel kit bat stag spars lestafled wingS stab turtle deck hatch & fin tee-abteneti stilt illS haha MAKES DUILfhst QUICK 115 SCALE 4ISTR ENG WACO HKS -777812-4/STR GREAT LAKES TR6490-4/STR GREAT LAKES SPL 6490-4/STR PLANS 0 / PG COWL 0 / ECONO PAC 0 14 GIANT SCALE BIG ENG WACO HKS -79975 25-4 ENG GREAT LAKESTR80 20-3 ENG GREAT LAKES SPL 80 20-3 ENG PLANS 0 IFS COWL 0/PS PANTS 0 ECONO-PAC 0 / GREAT LAKES 0 114 SCALE FARMAN MOUSTIQUE 80 45- 604/STRPLAN 0 * 2 RIC ANTIQUE MODELS * BILL WINTERS ROOKIE72 span45 4/STR DEBOLTS LIVE WIRE TRAINER 25% -60 span 25 2/STR -40 4/STR S 0 ea ADO $300 S & H CONT us 10 SASE tNFO NORMAN ROSENSTOCK 124 GRANADA ST ROYAL PALM BEACH FL 33411 August 1988 55 R ECI YOUR EYES IN COMFORT WI IN NFORDA3LE HANDSOME vision tmportant sense high-quality scratch resistant polycarbonate lens safety glasses must modelers Available clear gray dark green light green gradient mirrored gray lens Adjustable temples Wide view ANSI Z87 approved GREAT PRICES Iwant protect eyes style comfort U Clear-$725 eaL Gray$855 ew U Lt Green$855 ea UDk Green-$855ea UGradientMirmr-$lOSOea NAME ADDRESS cnYsrxiyztp Send check money order C&C Enterprises 141 Willa Dr Columbia SC 29209 SC Residents add 5% Sales Tax lius shipping $1100 Cowl pasta campy landing gear daet Inner cores ler shrg tail naufaces turtle deck hatch A monthly publication Covering International RC Soaring Scene US $17 yr 21/yr 1st Class In Canada/Moxlco $22/yr US funds Asia & Pacific $28/yr US funds Europe UK $28/yr US funds Surfaco Mail Foreign $18/yr USfunds RC SOARING DIGEST PO Box 1079 Payson AZ 85547 airplane will roll same direction same speed upright upside down 0-g dive true because roll moment generated equal opposite changes angle attack left wing right Within wings unstalled range angle tack change lift per change angle attack approximately constant cause change matters base angle attack important Note also because equal opposite change yawing airplane will cause change total lift gener ated nice feature able roll thermal having simultane ously compensate pitch However air planes high rates yaw roll possibility gyroscopic coupling yaw roll axes yielding unex pected pitch-up response due gyroscopic precession problem coordi nated aileron aircraft since axis being spun time Swept-wing arrangements couple yaw roll much like dihedral doesbut some important differences yawed swept wing generates roll moment differ ence effective length wings wings still produce roughly same amount lift since have same area roughly same angle attack wing longer other has leverage means roll moment swept wing related to tal lift being produced yaw angle plane yawed 1 g roll mo ment will same independent speed pulling three gravities roll moment will three times great 0-g dive no roll mo ment upside down 1 g roll moment reversed Radio Con trol pure swept-wing model dihe dral ailerons will very tricky air plane fly well swept-wing airplanes ailerons emphasis rudder coordina tion will prevent unexpected responses Summary conclusions dihedral arrangement crucial handling roll axis Dihedral provides coupling between yaw roll roughly proportional Equivalent Dihedral Angle EDA yaw angle rolling moment wing can com puted based its dihedral arrangement yaw angle airspeed wingspan wing area planform Different dihedral arrangements have same roll moment otherwise equal V-dihedral wing said have Equivalent Dihedral Angle equal dihedral angle V-dihedral wing Equivalent Dihedral Angle given dihedral arrangement may easily calcu lated Various dihedral arrangements have anal ogies aileron arrangements Transitional maneuvers weak point rudder-and-elevator airplanes Generous dihedral long tail moment arm large verti Step future AVIATION Become Aviation Electronics Technician learn repair maintain electronic equipment used aboard aircraft Actual planes used training Hangar runway campus Train just 19 months Jobs waiting CALL NOW 1-800-758-5757 CLOVER PARK Vocational Technical Institute 4500 Steilacoom Blvd SW Tacoma WA 98499-4098 FAA Repair Station #4466 cal stabilizer lightweight wing tip pan els tail group minimize transitional shortcomings roll moment dihedral wing dependent overall angle attack Swept wings behave quite differently dihedral wings RC Soaring/Blakeslee Continued page 54 Adjustable preset trims Launch Cruise Speed Simple switch-selection simplifies pilots work during critical launch sequences In-flight setup changing Switch planes config uration on-the-fly try Out new adjustments enhance performance during particular events Landing position flap threshold selection Al lows set trip-point triggers aile ron spoiler deployment Works Airtronics FM/PPM FM/PCM receivers Initially Module 7SP Other brands added deal contact CSL make reserva tion have transmitter converted will send shipping kit sending transmitter work takes about 10 days ATRCS-modified transmitter re turned users manual explains program using examples illustrations Dur ing setup sequence asked inputs through menu-style prompts Special program features arc designed help enter correct information prevent accidental loss set ups Full information available fmm CSL 1361 Fallen Leaf Dr Milpitas CA 95035 can call 408 946-4142 SM Sailplanes Vince Parizek produces limited number Sailplane mostly Scale kits Kits may best word describe since Vinces planes appear pretty completely fin ished Lets have Vince tell us about himself well get specs two big Scale Sallplanes Just let know about background have involved RC Gliders years have building own Gliders quite some time grew up Europe became interested Scale Glid ers Since arriving States 1968 found basically no Scale ships made concerned however because could purchased Germany past few years drop dollar has put price out reach average modeler So decided offer experience Scale enthusiasts reasonable prices Because still hobby make kit myself production low waiting list stands about four weeks SMs two Scale ships Start & Flug H101 Salto 44-meters wingspan fourmeter Schleicher AS-W 17 Both have white gel coat epoxy glass fuselages foam wings sheeted obechi wood wings have ply wood spars plus carbon fiber reinforcement Aile ron spoiler areas reinforced twoounce glass cloth Tail surfaces also obechi covered foam Individual specs Salto fuselage 67in long wing area 1140 sq weight 85 lb wing loading 16-18 oz per sq ft airfoil modified Ritz II AS-W 17 specs include fuselage 59-in long wing area 1020 sq weight seven pounds wing loading 14 oz per sq ft airfoil modified Ritz III Both planes available basic com plete kit explained easily listing what complete kit gives leading edges wing tips installed shaped precut aile rons spoilers installed precut plywood pieces radio installation set decals Salto complete kit includes wheel basic complete kits AS-W 17 $289 $385 respectively Salto kits $425 $515 full-size AS-W 17 has 20-meter span model / scale Seventeen has enormously popular subject modelers H101 Salto much rarer subject Its maker offshoot Glasfiugel factory first flew 1971 wings Standard August 1988 167 Libellebut shortened 136 meters 44meter model thus /3 scale Salto German word loop can imagine fully stressed aerobatics model certainly looks lovely air Its best contact Vince further details exact ordering information address 2703 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 828-2300 Want see 23-ft-span Sailplane Remember giant Grob Twin Astir Scale Sailplane featured December column beauty made Roland Kern Roke Modelle kits Wannweil FR Germany Well Tony Arnoux Miami FL Roke importer says Roland planning attend AMA Nats Vir ginia will put up some demonstration flights Twin Astir flights expected Soaring site either before after days competition flying should really tract crowd Roland also plans enter Scale competition normal -sized planes four-meter ASK-18 Multiplex lend ing Roland radios US frequencies can fly both planes Mr Kern will taldng orders Twin Astir kitsfor about $2500 News Paris FAI/CIAM meeting John Grigg chairman ClAM F3B Subcommit tee passed along two important pieces news April meeting 1 New rules limat winch power 2 1989 F3B World Champion ships will France4Okm south Paris new winch rules set minimum internal re sistance values both winch motor battery 15 six milliohms respectively stalled-winch condition winch does meet minimums permanent fixed resistance must installed minimums will limit winch power about 16kw line pull 40kg less weak-link rule dropped new rule adopted immediately safety rea sons John said internal-resistance idea came Czech subcommittee representative Two-time World Champion Rolf Decker built recording volt-ohmmeter demonstrated subeommittec Paris winch must al lowed start must stalled quickiy less revolution RoIf did piece rope wrapped around drum ohmmeter must read resistance quickiy before heat builds up meters resistors increases readings World Champs other contests matter organizers will need test winch motor battery set seal resist ances nothing can altered US F3B final ists will need measure adjust winches L WANNA RACE MORTHFAT ARFA L BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs leformatioh Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVE FRANKLIN MASS 02038 Tel 617 528-4043 203 673 -2000 before finals Schematics test apparatus will made available ASAP word 16kw power standard Ford starter motor commonly used US can produce less power souped-up Fords US team used Achmer last year Stock Ford motors said have internal resistance 18-19 milliohms John said goal eventually get winch power down 11kw new rule appears workable solu tion very difficult problem F3B competition will much better LSF news League Silent Flights new ficers President Bob Steele Fort Wayne IN Vice-president Ray Hayes Romeo MI Secretary Jim Martin Xenia OH Treasurer Susie Lipp Defiance OH LSFs first order business get ac tive members mailing list An active mem ber has communicated LSF last two years sent voucher Level IV V current address dont fit either categories wish stay mailing list drop card LSF PO Box 647 Mundelein IL 60060 USA request ac tive status new 1SF officers asking Soaring clubs around country consider holding LSF re gional contest August September 1988 would like see 15-20 regional contests held Some already scheduled club interested just write call Ray Hayes 69598 Brookhill Dr Romeo MI 48065 phone number 313 752-6163 information first-rate contests well-attended because prior national publicity highly prized LSF plaques presented winners Both club 1SF make money winners regionals will invited 1989 LSF Internats tentatively scheduled Uti ca MI mid-August new Executive board dedicated revi talizing LSF helping restore spirit RC Soaring USA anything can help let know can help sending postcard cur rent addresstoday NSS news 1988 National Soaring Society Excellence Award Program EAP being run Sailplane editor Doug Dorton Scoring same last year cards distributed members sent EAP cards last year NSS member would like give program gobut didnt receive cardsdrop note Doug 3058 Bernina Dr Salt Lake City UT 84118 can call him 801 966matcnua rurrormance y5Iem TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS OBlendo4Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS 1625 way EAP works contests March through November meet simple cri teria have least 10 contestants score respect winners score earns certain number points member accumulates points over six contests wins need fill out card after contest have CD sign mail Doug nice merchandise prizes won theres no reason members shouldnt have try Sources materials John Wyss report making Kevlar fuselages whieh appeared June 1988 column mentioned gets Key lar Safe-T-Poxy George Span Aero space Composites Actually George handies sorts high-tech materials can check him needs PO Box 16621 Irvine CA 92714 Anyway mention Aerospace reminded recently saw list sources various specialized materials Marshall Longs Texas Soaring Conference Magazine As public service Ill reprint Marshalls list along very brief rundown what compa nies known Bob Sealy s Quality Fiberglass 521 96th Lane NE Blame MN 55434 Telephone 612 7802737 Bob makes several types fuselages Slope Thermal Cross-Country Sailplanes along foam wing cores Bob will cut type foam core wing profile person 10 FT B-17 PLANS $3500 3 CATALOGS 5900 THE BEST iN SCALE HOLMAN PO BOX 741 SAN BERNARDINO CA 92402 Send SSAE catalog iheet complete line KIlL RhBX$100 RIOOE catalog MACHINERY& TOOLS P0 Boo 536Y 3044623530 Hurricane Wr/ 25526 coffer complete selection lathes mills end tools viation Modeler 168 Model Aviation RADIO SOUTH K4C AUTHORIZED SERVICE CENTER Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Radio South Batteries 500 ma Pack 48V1100 Futaba conn1350 800 ma Pack 48V1950 Futaba conn2275 1200 ma Pack 48V2100 Futaba conn2425 TX batt Futaba G-Series PCM2450 Featuring fast service j~$ qualified peeple t latest equipment Including SPECTRUM ANAL YZER FREQUENCY CONVERSIONS AM4 Frequency Comnunee Approved TVA1 LAML~I We stock Futaba JR radios YS engines parts Hatori headers pipes Repair Heli Sets Gyros Orders COD MC American Express Pricessu blect change noticeOPEN 8-5 CST904 478-6745 %........ 43 West Nine Mile Rd Pensacola FL 32514 provide templates him use Cores white foam will have spar slots cut out Bob now making Bob Dodgsons hi selages epoxy/glassand doing beautiful job Viking Models USA 2026 Spring Lake Dr Martinez CA 94553 Telephone 415 6890766 Jerry Slates has very large selection fi bergiass fuselages choose including five Scale types catalog shows pictures fu selages available gives wing profile approximate wingspan can used Cliff Ol iver San Antonio bought Jerrys fuse lages called Contestant beautiful piece workmanship 53 long can carry wingspan up 148 E-205 profile kit comes clear canopy top tray Cliff will use Cross-Country ship September Corpus Christi 20K closed-course X C meet Wilshire Model Center 2836 Santa Monica Blvd Santa Monica CA 90404 Telephone 213 828-9362 Bob Ratzlaff recently purchased Wilshire Maddy Weiss determined keep up standards established Maddy late husband Hans Wilshire has special Sasiplanes-only catalog full kits kinds neat not-always-easy-to-find accessories scratch-builder possible order kit priced anything $30 $2000if wallet big eyes SR Batteries Box 287 Bellport NY 11713 Telephone 516 286-0079 company has offer just batteries although its main effort example carries Deans con nectors maldng own battery leads changing over servos own type equip ment An interesting item SR Piggy Back transmitter pack important person going record flight working higher LSF levels fly Electrics SR handles Ace RIC chargers Heavy Duty Digipace cyclers latter being made specially SR Batteries Aircraft Spruce Specialty Co PO Box 424 201 West Truslow Ave Fullerton CA 92632 Telephone 800 824-1930 Aircraft Spruce supplier full-size aircraft builders items sells interest modelers catalog outstanding Youll find sorts cloth resin tools aircraft construction Cadillac Plastics Houston TX Telephone 713 674-2400 See local storeBB Cadillac sells lot different items including 14-mil lar covering fiberglass surfacing vacuum-bag wing construction technique Vacu um pumps can purchased hardware stores dont come cheap purchased new Hobby Woods PO Box 48 Linden CA 95236 Telephone 209 887-3974 Marshall Long didnt include Hobby Woods list taking editorial license Id like add because excellent service quality balsa Ive gotten over years scratchbuilder try 11W balsa needs Gougeon Brothers PO Box X908 Bay City MI 48707 Telephone 517 684-7286 other company Marshalls listI noticed Gougeon Brothers mentioned Gordon Stratton Eastern Soaring Lines newsletter seems though should included GB primarily supplier fiberglass boatbuilding industry source West Sys tem epoxy 105 resin 205/206 hardener 301 vacuum pump epoxy dispensers fiberglass cloth carbon fiber Progress Princeton low-Reynoldsnumber airfoil tests repotted Michael Selig John Donovan stage have instrumentation support equipment run experiments lift model will measured spe cially designed one-component force balance drag will measured wake rake method will involve traversing airfoil wake single miniature total-head-pressure probe Other measurements will include gle attack free-stream dynamic pressure static pressure upstream downstream model quantities well oth ers will digitized through 12-bit A/D con verter connected IBM PC/XT data stor age analysis thorough description experimental apparatus procedure will given Soartech following experiments Sometime February plan begin stalling system wind tunnel have successful predicting work tests will begin end however clear experiments will have finished August 1988 because Michael finished Prince ton last August John will finish August have 12 wind tunnel models built seven currently under construction Clark-Y Stan Watson IL E193 Stan Koch TN E214 Terry Luckenbach PA S4061 E387 Forrest Miller NJ E387 S3021 S4233 Bob Cham pine VA MB253515 Mike Bame Jerry Krainock CA WB 135/35 WB 140/35 Woody Blanchard VA S2091 Dave Jones Bruce Baker Mike Chiddick Roger Egginton Lea Roger England 54061 Mark Allen CA E205 Dave Batey Co WI HQ 15/90 RoIf Girsberger Co Switzerland HQ 25/90 Ray Olsen Co AZ S4064 Stan Watson IL FXlO-100 Rich Border NJ have duplicates some airfoils can check possible degree performance variability between different models After start testing some models still plan design new airfoils have built tested Given have until end AuContinued page 172 5151JET SERIESThe Proud Bird theProd Bird planes feature balsadesigned meet construction Designed wIth thegsPRA rorela -scale model 111 accept intermediate flyer mind will120 ralesT5is 1/4 terill jet accept 2125 size engineuse60120 ci sIze engines rear exhaust engine ex ceptional performamceDet allEpOap glass faselagewIth foam wing construction full kIt $15111 Inc hassles darted fanSkyhaaxSemikit also avaIlable Ins wood $12511 SpecIal IntrodaPlease add $1101 shipping handling $411 flu Pen Sent check MDadd 6% sales tax -or Mastercard Visa -110 add $3013g5S54477 PARRISH AiRCRAFT Top Surkpy ot waxets formula ODart Experimental 255W49thTe, $9500 x $5 SIPTipersharktwoplace full sloe aircraft amlatiam Pta 33315 August 1988 169 No 593 Taylorcraft $1000 RO Sport Scale lightplane builds standard two-placer clippedwing air show stunter Span 70 58 30140 two-stroke 40/48 four-stroke engine Two plan sheets no documentation No 594 P-61 Black Widow $800 CL Profile Scale WW II twin-engine night fighter uses 19/25 engines spans 491/2 No 193Stiletto CL Saint model McDonald winner 1076 1980 1982 FAI World Champs$ 375 No 239Blue Birds AC Ken Willards formation plane 4-channel 10115 power$ 375 No 262chmaster CL Crash-prasf trainer two sizes15/30 35/40 pnwer$ 125 No 3101930 Fleet BIplane AC Sport Scale far 35/40 4-channel Wingspan Sit scale Two sheets5 625 No 314Drake II RC Ken Willards tying boat 3-channel 15-power Fly land wifh mmovable gear$375 No 326Taylor cub AC Don Sn/Is Schoelyard-Scale 0495 2-3 channel Spans 50 inS350 No 332Zephyr AC Small 2-channel gilder fer hood-Isanch 010w thermal slope soaneg5 200 No 386Laser 200 AC Sport Scale mplica championship Aerohahc filer Uses 40 power 4-5 channel Two sheets51075 No 414ElectrIc Sparky RC Elecfric fan filer 05 motor 3-channel RC scaled-up 1939 rahber-power favorite$050 No 440cavalIer AC Old-Timer-like new design has huge wing slow easy flights Par 35 pwr 3 ch Two sheets$1725 No 4471/2A Miss America AC Old-Timer Texaco model 040 glow 2-channels$650 No 454Sweet P-30 FF Neat stick-and-dense Qatrisor gabber P-30-clans model a contest-wusner$200 No 457Spectra AC Electric-power ts 06-sloe motor ones 3 different wings sport searing aembaSco5700 No 4604-40 AC Shnelder-wing sport filer 4-cycle 40-size engine 4 channels$650 No 465Blue Max II AC Fan-fly sportater tsr 40-sire engines spans 52 Lightweight stractum$700 No 478Buttercup AC Cute nOun sportster uses micra 2-ch AC pulse-insider Spans 27 0201035 power$300 No 490Weekender AC Low-wing sport tier 20-ode 4-stroke engine spans 47 in$575 No 506Playmate AC Sport filer 3 RC channels 10125-one engines spans 50 in$650 No 512Extra 230 AC Giant Scale acrahatic plane spans 8 ones Quadra engine Two plan sheets$1650 No 514Henry T AC Sportster tor IsA 2-3 channel 00 spans 52 han adlastable wing flapsS475 No 521Comet Jr clipper Plus 35% AC Old-Timer sporaiter leA engine 2-nh AC spans 40 0 No 522Sorts Pitta AC Reminder-scale bipo far 40160 engines spons 43 Two plan sheets$1050 No 525NI-Tech 2002 00 Canard ducted-fan far 45 engines spans 39 Two sheets$1000 No 528Swallow AC Lightweight holdegger 40-size four-stroke engines spans SB in$025 No 531TerrIble Coupe PF Aubber-powerad Coope driloer spans 40 contest-winner$475 No 533Cessna C-37 AC Schoolyard Scale famoas 305 plane 049110 power 2-ch spans 42 in$500 No 5341938 Challenger AC Texaco Old-Timer spans 47/o 040 engine 2-channel AC$550 No 535Agrix AC AMA Class 0 Sailplane spain 110 uses 4-channel AC system$725 No 539Simitar Slow-Motion 15 AC Tailless flying wing tar 15 engines spans 60 ones 3-ch AC$350 No 541Parakeet AC Sport hiplane tsr 15125 engines 3-channel AC esfoipment spans 42 in5675 No 544Heron AC 511 Winters sport Electric tsr geamd 075 motor 3 AC ch spans 65 in$575 No 549cricket AC Sport scalelike tor 20-san two- four-strake engine spans 40 in$675 No 554Super Doubler II AC Sport AerobaticsPylon far 40/46 toar-strake engine spans 57 in$575 No 555Double Duty AC Basic/advanced trainer 10115 engines spans either 67 en 50 Two plan sheets$1075 No 559Low Voltage AC Electric-power oporfater fnr 035 motor spans 44 inS475 No 561Wild Ham RC Tri-motar sponster spans 63 ones 25 engines Two plan sheets5900 No 553to AC AMA Class B 2-Meter Sailplane has 703/e-in-spOn toam wing$725 No 565Sea Loon AC Pod-and-hanra seaplane 15 power spans 4W/u in$675 No 568Avro 560 FF Mini-electric Scale 23 British utralight spans 30 in5200 No 569Electroagmak AC Electric aesehatic plane spans 44 uses 00 motor$550 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-balas bout-up surtaces$400 No 571Voyager CL Sorta-Scale A-powemd voodoo amund-the-world plane spans 46/e in$225 No 572TR-260 AC Sport Scale Aesehatic plane 4-steeke 60/65 power spans 60 in$1100 No 573Pink Lady F-40 CL Bill Wisniewokis Fonnala 40 Speedster 40 power spans 27 in$400 No 575Scorpion 60 AC Fun-fly aembaitc plant 60 power spans 501/s in$1150 No 576Serendipltyl ndant EZB racold-helder opens 17% in$325 No 577Halflite CL /sA Combat plane has toem wing spans 30 inS225 No 576Schwelzer 1-268 AC Quarter-scale Sailplane spans 125 Tow plan sheets$1475 No 579Lockheed P438 CL Pmcision Scale WW II fighter far twin 4So spans 55 iv Fowler flaps etc Three plan sheets$1000 No 580Parnall Pixie PP Rubber Scale Gelden Age British biplane 112 scale spans 31/a in$375 No 581Gee Bee Model Y AC Golden Age Aecer spans 72 scale 60 power Thwe plan sheets$1175 No 582Heinkel 100 CL Sport Scale 01W II fighter tor 40 engine spans 61/o otnecaim mostly car/deard Two plan shts$1250 No553Spoetwagon AC Radis-ised sport FF model spans 54 ones 10115 engine$700 No 584Happy Days CL Intermediate trainer/Stunter spans 42 in. uses 20135 engine$575 No 585Dragonfly PP fligh-porfermance P-30 Aahber ship opens 30 iv weighs 50 gramoS400 No 586Snapdragon AC Fan-fly/sporaiter far 25130 engines spans 45 in$600 No 587Pilatus PC-9 CL ProOle Scalelfltunterloportster spans 50 in. ows 29135 engine$550 No 588Malah AC Slope-Searing Sailplane opens 41 ones 2 AC channels5425 No 589Vlckera Weflesley AC Spon Scale WW II bomber spans 00 in. uses 40 4-cycle engine Two p100 sheets no dec$1250 No 590Bud Lite Laser Stunter CL Stoeter le scalelike spain 63 uses 60 engine Two plan sheets$1050 No 591Focke-Wulfi FW 190-A AC Sport Scale 01W II fighter spans 50 in. uses 35145 2-strake engine Twa plan sht no doc$1350 No 592 ET CL trainerlapodster ones 05 electrc power 0-cell bafler5 pack Wingspan 24 in $ 475 Circle numbers plans wish order 193 414 490 531 554 570 579 587 239 440 506 533 555 571 580 588 262 447 512 534 559 572 581 589 310 454 514 535 561 573 582 590 314 457 521 539 563 575 583 591 326 460 522 541 565 576 584 592 332 465 525 544 568 577 585 593 386 478 528 549 569 578 586 594 Plan price inCIUdOS first Class postage US delivery Air Mail over 300 miles ordBrs non-US address lease add $250 Air Mail asIa e handlin Ian Make Check money order payable US funds drawn US bagk Model Aviation c/c AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ AMA No ______________ EJ AM F STREET CITY ZIP RC Soaring/Blakeslee Continued page 169 gust however may abte wanted very thankful large number people have contributed project continue support following excerpt taken last progress report 4-15-87 point entire measurement sys tem has received considerable improvement thanks contributions time money equipment David Fraser Fraser-Volpe Corp PA Professors AJ Smits SH Lam HC Curtiss Princeton University Ray Olsen AZ Professor MD Maughmer Penn State Herk Stokely Soartech MKS Instru ments MA Scientific Solutions Inc OH have also received help lee Murray WI Professor Mark Drela MIT Preben Norhoim Denmark have overwhelming response initial letter asking help building wind tunnel models addition listed above following have also offered build models us Chuck Anderson TN Jerry Arana CA Ken Bates Ken Shaw MI Tony Beck VA Ron Carter UT Jack Cash MD Bart Como TX Seth Dawson Co CA David Fraser Co PA Duane Harris IA Peter Illick CO Harley Michaelis WA Carl Mobs MI Mark Nankivil Co MO Ted Off CA RJ Ostrander NJ Tom Pratt OH Mike Reed CA Joe Rumineki NC Ty son Sawyer NH Gordon Stratton NY Doug Stout NJ Jeff Troy VA Over last several months Jerry Jackson TX Armin Saxer Switzerland Chuck Gris wold CA HJ Rogers OH Brian Smith OH Tom Yamokoski OH Trey Wood AL Karl Widiner CA Todd Enlund LA have helped us either making contributions offer ing build wind tunnel models hope no has left out begin taking measure ments will sure let know Thanks again Everyone knows important experi ments Michael John Im pleased able pass along progress reports ac knowledge Sailplaners helping models other support hear more good reports about existing Selig airfoils further improvements can made im pact model Sailpianes should tremendous Want electrostatic stabilizer October 1987 column description Maynard Hill workings electrostatic stabilizers generated lot interest readers wrote requesting copies Maynards full write-up interested purchasing ready-made sta bilizer may purchase Maynard $174 plus $28 required two polonium io nizers Contact Maynard Aero Probe Technol ogy 2001 Norvale Rd Silver Spring MD 20906 1988 Ohio Cup contests Dayton Area Ther mal Soarers DARTS will host series four contests total fliers best two scores will win Ohio Cup Dates June 1819 August 20-21 Jim Martin 513/376-9046 will CD June contests Gale Lerach 513/429-2543 Jerry Shape 513/843-5085 will CDs August ones Sounds like great idea State wide bragging rights 172 Model Aviation 0 03 0 coo Coo -set o g 513 zo Os es - 00as -2 0 ases n o 2 5 Gac 0 V Ces ens 0 e V 00 oat C 0 SE 8200 00 C n 82 01 C -B 0
Edition: Model Aviation - 1988/08
Page Numbers: 54, 55, 167, 168, 169, 172
5 1NEW Control Systems Laboratories ATRCS Airtronics Module SP good RC system very popular Sailplane fliers What would think someone told could transform SP equal sophisticated radio worldfor $300 think lot people would jump chance Granted rudder-steered polyhedral planes dont need high-tech set hut fliers planes hav ing ailerons flaps ability kinds tricks reasonable price will wel comed people Control Systems Laboratories will performs miracles Eugene En gelau Thomas Mroz formed CSL manufacture install retrofit computer elec tromes will turn old pumpkin Rolls Royce first PC boards SP radio mods other radios will added shortly Gene Tom both members South Bay Soaring Society great news us because understand special needs mod ern Sailplanes call system ATRCS stands Advanced Technology Radio Control System Its pronounced A-Tracks Since computer-on-a-chip business way over head following description copied CSLs introductory flyer microprocessor used ATRCS pow erful low-power-consuming no additional batteries required 16-MHz 16-bit-wide-bus cal culating machine characteristics translate computational power four times greater similar system being offered today Calculat ing power such means will never see jitter jumpiness control surfaces never experience delay between time push stick flip switch control surface actually moves ATRCS powerful control system having very comprehensive set features designed RC flying today morrow its features Multiple-setup memory four planes No backup battery required Auto setup Save fea ture avoids setup errors Type-of-plane setup templates Easy setup new planes changes old setups Trim travel adjustments individual sur faces Allows correction servo linkage mis matches Mode definition Allows configure transmitter controls suit own taste Advanced mixing functions Full trailing edge camber adjustment Crow ailerons Up/flaps Down aileron-to-flap flap-to-elevator elevatorto-camber etc Continued page 167 Want know about ATRCS A-Tracks transmitter mod available Control Systems Laboratories Theres lots info Byrons column month Photo depicts display switch board Front memory board front Airtronics 7SP Mod ule transmitter ATRCS allows imaginable kind control mixing control throw limiting trim adjusting etcand can store four different setups No additional batteries required SM Sailplanes 4-meter AS-W 17 fifth-scale model Kits have fiberglass fuselages obechi sheeted foam wings Made USA too SMs products sure look like beauties 54 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Wlnnebago Dr Sedalia CO 80135 Transmitters flip-down front cover allows easy access ATRS liquid crystal display LCD six pushbuttons used set up transmitter anything can think Roland Kerns 23-ft-wingspan Grab Twin Astir sits rest German modeler plans bring 88 Nats some demo flights Theres info column SM Sailpianes Santa Monica CA H-1O1 Salto 1/3-scale Sailplane looks great both ground flight Model spans 44 ters 172 14 4 GRAMCO POCKET PROP Adjustable Returning Toy Quality Hardwoods Left Right Handed Flies Approx 25 yds Illustrated Directions $15 Includes Postage THE GREAT AMERICAN COMEBACK 4554 SUNRISE BLVD DELRAY BEACH FL 33445 ~ TR260 Freud Aerwduik Deaigu 114 Stand-off Scale Kit span Length66 Wing area 1213 sq Weight.. 165 lbs Power035-040 G38-G62 FuE lit $21500 plus shIpping *1100 Everything scratch kit plus precut wood pets contptete mod z *AII wood & foam csnstructlen eFillergIas cowl 6 pants *2plece plug-in wings Foam core airfolled tail surfaces No tail brace wires required FOR MORE INFO ONTO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Luke IA 5136 DELUXE Kit $28500 plus shIpping $1100 Everything tel kit bat stag spars lestafled wingS stab turtle deck hatch & fin tee-abteneti stilt illS haha MAKES DUILfhst QUICK 115 SCALE 4ISTR ENG WACO HKS -777812-4/STR GREAT LAKES TR6490-4/STR GREAT LAKES SPL 6490-4/STR PLANS 0 / PG COWL 0 / ECONO PAC 0 14 GIANT SCALE BIG ENG WACO HKS -79975 25-4 ENG GREAT LAKESTR80 20-3 ENG GREAT LAKES SPL 80 20-3 ENG PLANS 0 IFS COWL 0/PS PANTS 0 ECONO-PAC 0 / GREAT LAKES 0 114 SCALE FARMAN MOUSTIQUE 80 45- 604/STRPLAN 0 * 2 RIC ANTIQUE MODELS * BILL WINTERS ROOKIE72 span45 4/STR DEBOLTS LIVE WIRE TRAINER 25% -60 span 25 2/STR -40 4/STR S 0 ea ADO $300 S & H CONT us 10 SASE tNFO NORMAN ROSENSTOCK 124 GRANADA ST ROYAL PALM BEACH FL 33411 August 1988 55 R ECI YOUR EYES IN COMFORT WI IN NFORDA3LE HANDSOME vision tmportant sense high-quality scratch resistant polycarbonate lens safety glasses must modelers Available clear gray dark green light green gradient mirrored gray lens Adjustable temples Wide view ANSI Z87 approved GREAT PRICES Iwant protect eyes style comfort U Clear-$725 eaL Gray$855 ew U Lt Green$855 ea UDk Green-$855ea UGradientMirmr-$lOSOea NAME ADDRESS cnYsrxiyztp Send check money order C&C Enterprises 141 Willa Dr Columbia SC 29209 SC Residents add 5% Sales Tax lius shipping $1100 Cowl pasta campy landing gear daet Inner cores ler shrg tail naufaces turtle deck hatch A monthly publication Covering International RC Soaring Scene US $17 yr 21/yr 1st Class In Canada/Moxlco $22/yr US funds Asia & Pacific $28/yr US funds Europe UK $28/yr US funds Surfaco Mail Foreign $18/yr USfunds RC SOARING DIGEST PO Box 1079 Payson AZ 85547 airplane will roll same direction same speed upright upside down 0-g dive true because roll moment generated equal opposite changes angle attack left wing right Within wings unstalled range angle tack change lift per change angle attack approximately constant cause change matters base angle attack important Note also because equal opposite change yawing airplane will cause change total lift gener ated nice feature able roll thermal having simultane ously compensate pitch However air planes high rates yaw roll possibility gyroscopic coupling yaw roll axes yielding unex pected pitch-up response due gyroscopic precession problem coordi nated aileron aircraft since axis being spun time Swept-wing arrangements couple yaw roll much like dihedral doesbut some important differences yawed swept wing generates roll moment differ ence effective length wings wings still produce roughly same amount lift since have same area roughly same angle attack wing longer other has leverage means roll moment swept wing related to tal lift being produced yaw angle plane yawed 1 g roll mo ment will same independent speed pulling three gravities roll moment will three times great 0-g dive no roll mo ment upside down 1 g roll moment reversed Radio Con trol pure swept-wing model dihe dral ailerons will very tricky air plane fly well swept-wing airplanes ailerons emphasis rudder coordina tion will prevent unexpected responses Summary conclusions dihedral arrangement crucial handling roll axis Dihedral provides coupling between yaw roll roughly proportional Equivalent Dihedral Angle EDA yaw angle rolling moment wing can com puted based its dihedral arrangement yaw angle airspeed wingspan wing area planform Different dihedral arrangements have same roll moment otherwise equal V-dihedral wing said have Equivalent Dihedral Angle equal dihedral angle V-dihedral wing Equivalent Dihedral Angle given dihedral arrangement may easily calcu lated Various dihedral arrangements have anal ogies aileron arrangements Transitional maneuvers weak point rudder-and-elevator airplanes Generous dihedral long tail moment arm large verti Step future AVIATION Become Aviation Electronics Technician learn repair maintain electronic equipment used aboard aircraft Actual planes used training Hangar runway campus Train just 19 months Jobs waiting CALL NOW 1-800-758-5757 CLOVER PARK Vocational Technical Institute 4500 Steilacoom Blvd SW Tacoma WA 98499-4098 FAA Repair Station #4466 cal stabilizer lightweight wing tip pan els tail group minimize transitional shortcomings roll moment dihedral wing dependent overall angle attack Swept wings behave quite differently dihedral wings RC Soaring/Blakeslee Continued page 54 Adjustable preset trims Launch Cruise Speed Simple switch-selection simplifies pilots work during critical launch sequences In-flight setup changing Switch planes config uration on-the-fly try Out new adjustments enhance performance during particular events Landing position flap threshold selection Al lows set trip-point triggers aile ron spoiler deployment Works Airtronics FM/PPM FM/PCM receivers Initially Module 7SP Other brands added deal contact CSL make reserva tion have transmitter converted will send shipping kit sending transmitter work takes about 10 days ATRCS-modified transmitter re turned users manual explains program using examples illustrations Dur ing setup sequence asked inputs through menu-style prompts Special program features arc designed help enter correct information prevent accidental loss set ups Full information available fmm CSL 1361 Fallen Leaf Dr Milpitas CA 95035 can call 408 946-4142 SM Sailplanes Vince Parizek produces limited number Sailplane mostly Scale kits Kits may best word describe since Vinces planes appear pretty completely fin ished Lets have Vince tell us about himself well get specs two big Scale Sallplanes Just let know about background have involved RC Gliders years have building own Gliders quite some time grew up Europe became interested Scale Glid ers Since arriving States 1968 found basically no Scale ships made concerned however because could purchased Germany past few years drop dollar has put price out reach average modeler So decided offer experience Scale enthusiasts reasonable prices Because still hobby make kit myself production low waiting list stands about four weeks SMs two Scale ships Start & Flug H101 Salto 44-meters wingspan fourmeter Schleicher AS-W 17 Both have white gel coat epoxy glass fuselages foam wings sheeted obechi wood wings have ply wood spars plus carbon fiber reinforcement Aile ron spoiler areas reinforced twoounce glass cloth Tail surfaces also obechi covered foam Individual specs Salto fuselage 67in long wing area 1140 sq weight 85 lb wing loading 16-18 oz per sq ft airfoil modified Ritz II AS-W 17 specs include fuselage 59-in long wing area 1020 sq weight seven pounds wing loading 14 oz per sq ft airfoil modified Ritz III Both planes available basic com plete kit explained easily listing what complete kit gives leading edges wing tips installed shaped precut aile rons spoilers installed precut plywood pieces radio installation set decals Salto complete kit includes wheel basic complete kits AS-W 17 $289 $385 respectively Salto kits $425 $515 full-size AS-W 17 has 20-meter span model / scale Seventeen has enormously popular subject modelers H101 Salto much rarer subject Its maker offshoot Glasfiugel factory first flew 1971 wings Standard August 1988 167 Libellebut shortened 136 meters 44meter model thus /3 scale Salto German word loop can imagine fully stressed aerobatics model certainly looks lovely air Its best contact Vince further details exact ordering information address 2703 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 828-2300 Want see 23-ft-span Sailplane Remember giant Grob Twin Astir Scale Sailplane featured December column beauty made Roland Kern Roke Modelle kits Wannweil FR Germany Well Tony Arnoux Miami FL Roke importer says Roland planning attend AMA Nats Vir ginia will put up some demonstration flights Twin Astir flights expected Soaring site either before after days competition flying should really tract crowd Roland also plans enter Scale competition normal -sized planes four-meter ASK-18 Multiplex lend ing Roland radios US frequencies can fly both planes Mr Kern will taldng orders Twin Astir kitsfor about $2500 News Paris FAI/CIAM meeting John Grigg chairman ClAM F3B Subcommit tee passed along two important pieces news April meeting 1 New rules limat winch power 2 1989 F3B World Champion ships will France4Okm south Paris new winch rules set minimum internal re sistance values both winch motor battery 15 six milliohms respectively stalled-winch condition winch does meet minimums permanent fixed resistance must installed minimums will limit winch power about 16kw line pull 40kg less weak-link rule dropped new rule adopted immediately safety rea sons John said internal-resistance idea came Czech subcommittee representative Two-time World Champion Rolf Decker built recording volt-ohmmeter demonstrated subeommittec Paris winch must al lowed start must stalled quickiy less revolution RoIf did piece rope wrapped around drum ohmmeter must read resistance quickiy before heat builds up meters resistors increases readings World Champs other contests matter organizers will need test winch motor battery set seal resist ances nothing can altered US F3B final ists will need measure adjust winches L WANNA RACE MORTHFAT ARFA L BEGINNER RACES 0-500 * FORM-i * FAI Instructions Club Programs leformatioh Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVE FRANKLIN MASS 02038 Tel 617 528-4043 203 673 -2000 before finals Schematics test apparatus will made available ASAP word 16kw power standard Ford starter motor commonly used US can produce less power souped-up Fords US team used Achmer last year Stock Ford motors said have internal resistance 18-19 milliohms John said goal eventually get winch power down 11kw new rule appears workable solu tion very difficult problem F3B competition will much better LSF news League Silent Flights new ficers President Bob Steele Fort Wayne IN Vice-president Ray Hayes Romeo MI Secretary Jim Martin Xenia OH Treasurer Susie Lipp Defiance OH LSFs first order business get ac tive members mailing list An active mem ber has communicated LSF last two years sent voucher Level IV V current address dont fit either categories wish stay mailing list drop card LSF PO Box 647 Mundelein IL 60060 USA request ac tive status new 1SF officers asking Soaring clubs around country consider holding LSF re gional contest August September 1988 would like see 15-20 regional contests held Some already scheduled club interested just write call Ray Hayes 69598 Brookhill Dr Romeo MI 48065 phone number 313 752-6163 information first-rate contests well-attended because prior national publicity highly prized LSF plaques presented winners Both club 1SF make money winners regionals will invited 1989 LSF Internats tentatively scheduled Uti ca MI mid-August new Executive board dedicated revi talizing LSF helping restore spirit RC Soaring USA anything can help let know can help sending postcard cur rent addresstoday NSS news 1988 National Soaring Society Excellence Award Program EAP being run Sailplane editor Doug Dorton Scoring same last year cards distributed members sent EAP cards last year NSS member would like give program gobut didnt receive cardsdrop note Doug 3058 Bernina Dr Salt Lake City UT 84118 can call him 801 966matcnua rurrormance y5Iem TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS OBlendo4Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS 1625 way EAP works contests March through November meet simple cri teria have least 10 contestants score respect winners score earns certain number points member accumulates points over six contests wins need fill out card after contest have CD sign mail Doug nice merchandise prizes won theres no reason members shouldnt have try Sources materials John Wyss report making Kevlar fuselages whieh appeared June 1988 column mentioned gets Key lar Safe-T-Poxy George Span Aero space Composites Actually George handies sorts high-tech materials can check him needs PO Box 16621 Irvine CA 92714 Anyway mention Aerospace reminded recently saw list sources various specialized materials Marshall Longs Texas Soaring Conference Magazine As public service Ill reprint Marshalls list along very brief rundown what compa nies known Bob Sealy s Quality Fiberglass 521 96th Lane NE Blame MN 55434 Telephone 612 7802737 Bob makes several types fuselages Slope Thermal Cross-Country Sailplanes along foam wing cores Bob will cut type foam core wing profile person 10 FT B-17 PLANS $3500 3 CATALOGS 5900 THE BEST iN SCALE HOLMAN PO BOX 741 SAN BERNARDINO CA 92402 Send SSAE catalog iheet complete line KIlL RhBX$100 RIOOE catalog MACHINERY& TOOLS P0 Boo 536Y 3044623530 Hurricane Wr/ 25526 coffer complete selection lathes mills end tools viation Modeler 168 Model Aviation RADIO SOUTH K4C AUTHORIZED SERVICE CENTER Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Radio South Batteries 500 ma Pack 48V1100 Futaba conn1350 800 ma Pack 48V1950 Futaba conn2275 1200 ma Pack 48V2100 Futaba conn2425 TX batt Futaba G-Series PCM2450 Featuring fast service j~$ qualified peeple t latest equipment Including SPECTRUM ANAL YZER FREQUENCY CONVERSIONS AM4 Frequency Comnunee Approved TVA1 LAML~I We stock Futaba JR radios YS engines parts Hatori headers pipes Repair Heli Sets Gyros Orders COD MC American Express Pricessu blect change noticeOPEN 8-5 CST904 478-6745 %........ 43 West Nine Mile Rd Pensacola FL 32514 provide templates him use Cores white foam will have spar slots cut out Bob now making Bob Dodgsons hi selages epoxy/glassand doing beautiful job Viking Models USA 2026 Spring Lake Dr Martinez CA 94553 Telephone 415 6890766 Jerry Slates has very large selection fi bergiass fuselages choose including five Scale types catalog shows pictures fu selages available gives wing profile approximate wingspan can used Cliff Ol iver San Antonio bought Jerrys fuse lages called Contestant beautiful piece workmanship 53 long can carry wingspan up 148 E-205 profile kit comes clear canopy top tray Cliff will use Cross-Country ship September Corpus Christi 20K closed-course X C meet Wilshire Model Center 2836 Santa Monica Blvd Santa Monica CA 90404 Telephone 213 828-9362 Bob Ratzlaff recently purchased Wilshire Maddy Weiss determined keep up standards established Maddy late husband Hans Wilshire has special Sasiplanes-only catalog full kits kinds neat not-always-easy-to-find accessories scratch-builder possible order kit priced anything $30 $2000if wallet big eyes SR Batteries Box 287 Bellport NY 11713 Telephone 516 286-0079 company has offer just batteries although its main effort example carries Deans con nectors maldng own battery leads changing over servos own type equip ment An interesting item SR Piggy Back transmitter pack important person going record flight working higher LSF levels fly Electrics SR handles Ace RIC chargers Heavy Duty Digipace cyclers latter being made specially SR Batteries Aircraft Spruce Specialty Co PO Box 424 201 West Truslow Ave Fullerton CA 92632 Telephone 800 824-1930 Aircraft Spruce supplier full-size aircraft builders items sells interest modelers catalog outstanding Youll find sorts cloth resin tools aircraft construction Cadillac Plastics Houston TX Telephone 713 674-2400 See local storeBB Cadillac sells lot different items including 14-mil lar covering fiberglass surfacing vacuum-bag wing construction technique Vacu um pumps can purchased hardware stores dont come cheap purchased new Hobby Woods PO Box 48 Linden CA 95236 Telephone 209 887-3974 Marshall Long didnt include Hobby Woods list taking editorial license Id like add because excellent service quality balsa Ive gotten over years scratchbuilder try 11W balsa needs Gougeon Brothers PO Box X908 Bay City MI 48707 Telephone 517 684-7286 other company Marshalls listI noticed Gougeon Brothers mentioned Gordon Stratton Eastern Soaring Lines newsletter seems though should included GB primarily supplier fiberglass boatbuilding industry source West Sys tem epoxy 105 resin 205/206 hardener 301 vacuum pump epoxy dispensers fiberglass cloth carbon fiber Progress Princeton low-Reynoldsnumber airfoil tests repotted Michael Selig John Donovan stage have instrumentation support equipment run experiments lift model will measured spe cially designed one-component force balance drag will measured wake rake method will involve traversing airfoil wake single miniature total-head-pressure probe Other measurements will include gle attack free-stream dynamic pressure static pressure upstream downstream model quantities well oth ers will digitized through 12-bit A/D con verter connected IBM PC/XT data stor age analysis thorough description experimental apparatus procedure will given Soartech following experiments Sometime February plan begin stalling system wind tunnel have successful predicting work tests will begin end however clear experiments will have finished August 1988 because Michael finished Prince ton last August John will finish August have 12 wind tunnel models built seven currently under construction Clark-Y Stan Watson IL E193 Stan Koch TN E214 Terry Luckenbach PA S4061 E387 Forrest Miller NJ E387 S3021 S4233 Bob Cham pine VA MB253515 Mike Bame Jerry Krainock CA WB 135/35 WB 140/35 Woody Blanchard VA S2091 Dave Jones Bruce Baker Mike Chiddick Roger Egginton Lea Roger England 54061 Mark Allen CA E205 Dave Batey Co WI HQ 15/90 RoIf Girsberger Co Switzerland HQ 25/90 Ray Olsen Co AZ S4064 Stan Watson IL FXlO-100 Rich Border NJ have duplicates some airfoils can check possible degree performance variability between different models After start testing some models still plan design new airfoils have built tested Given have until end AuContinued page 172 5151JET SERIESThe Proud Bird theProd Bird planes feature balsadesigned meet construction Designed wIth thegsPRA rorela -scale model 111 accept intermediate flyer mind will120 ralesT5is 1/4 terill jet accept 2125 size engineuse60120 ci sIze engines rear exhaust engine ex ceptional performamceDet allEpOap glass faselagewIth foam wing construction full kIt $15111 Inc hassles darted fanSkyhaaxSemikit also avaIlable Ins wood $12511 SpecIal IntrodaPlease add $1101 shipping handling $411 flu Pen Sent check MDadd 6% sales tax -or Mastercard Visa -110 add $3013g5S54477 PARRISH AiRCRAFT Top Surkpy ot waxets formula ODart Experimental 255W49thTe, $9500 x $5 SIPTipersharktwoplace full sloe aircraft amlatiam Pta 33315 August 1988 169 No 593 Taylorcraft $1000 RO Sport Scale lightplane builds standard two-placer clippedwing air show stunter Span 70 58 30140 two-stroke 40/48 four-stroke engine Two plan sheets no documentation No 594 P-61 Black Widow $800 CL Profile Scale WW II twin-engine night fighter uses 19/25 engines spans 491/2 No 193Stiletto CL Saint model McDonald winner 1076 1980 1982 FAI World Champs$ 375 No 239Blue Birds AC Ken Willards formation plane 4-channel 10115 power$ 375 No 262chmaster CL Crash-prasf trainer two sizes15/30 35/40 pnwer$ 125 No 3101930 Fleet BIplane AC Sport Scale far 35/40 4-channel Wingspan Sit scale Two sheets5 625 No 314Drake II RC Ken Willards tying boat 3-channel 15-power Fly land wifh mmovable gear$375 No 326Taylor cub AC Don Sn/Is Schoelyard-Scale 0495 2-3 channel Spans 50 inS350 No 332Zephyr AC Small 2-channel gilder fer hood-Isanch 010w thermal slope soaneg5 200 No 386Laser 200 AC Sport Scale mplica championship Aerohahc filer Uses 40 power 4-5 channel Two sheets51075 No 414ElectrIc Sparky RC Elecfric fan filer 05 motor 3-channel RC scaled-up 1939 rahber-power favorite$050 No 440cavalIer AC Old-Timer-like new design has huge wing slow easy flights Par 35 pwr 3 ch Two sheets$1725 No 4471/2A Miss America AC Old-Timer Texaco model 040 glow 2-channels$650 No 454Sweet P-30 FF Neat stick-and-dense Qatrisor gabber P-30-clans model a contest-wusner$200 No 457Spectra AC Electric-power ts 06-sloe motor ones 3 different wings sport searing aembaSco5700 No 4604-40 AC Shnelder-wing sport filer 4-cycle 40-size engine 4 channels$650 No 465Blue Max II AC Fan-fly sportater tsr 40-sire engines spans 52 Lightweight stractum$700 No 478Buttercup AC Cute nOun sportster uses micra 2-ch AC pulse-insider Spans 27 0201035 power$300 No 490Weekender AC Low-wing sport tier 20-ode 4-stroke engine spans 47 in$575 No 506Playmate AC Sport filer 3 RC channels 10125-one engines spans 50 in$650 No 512Extra 230 AC Giant Scale acrahatic plane spans 8 ones Quadra engine Two plan sheets$1650 No 514Henry T AC Sportster tor IsA 2-3 channel 00 spans 52 han adlastable wing flapsS475 No 521Comet Jr clipper Plus 35% AC Old-Timer sporaiter leA engine 2-nh AC spans 40 0 No 522Sorts Pitta AC Reminder-scale bipo far 40160 engines spons 43 Two plan sheets$1050 No 525NI-Tech 2002 00 Canard ducted-fan far 45 engines spans 39 Two sheets$1000 No 528Swallow AC Lightweight holdegger 40-size four-stroke engines spans SB in$025 No 531TerrIble Coupe PF Aubber-powerad Coope driloer spans 40 contest-winner$475 No 533Cessna C-37 AC Schoolyard Scale famoas 305 plane 049110 power 2-ch spans 42 in$500 No 5341938 Challenger AC Texaco Old-Timer spans 47/o 040 engine 2-channel AC$550 No 535Agrix AC AMA Class 0 Sailplane spain 110 uses 4-channel AC system$725 No 539Simitar Slow-Motion 15 AC Tailless flying wing tar 15 engines spans 60 ones 3-ch AC$350 No 541Parakeet AC Sport hiplane tsr 15125 engines 3-channel AC esfoipment spans 42 in5675 No 544Heron AC 511 Winters sport Electric tsr geamd 075 motor 3 AC ch spans 65 in$575 No 549cricket AC Sport scalelike tor 20-san two- four-strake engine spans 40 in$675 No 554Super Doubler II AC Sport AerobaticsPylon far 40/46 toar-strake engine spans 57 in$575 No 555Double Duty AC Basic/advanced trainer 10115 engines spans either 67 en 50 Two plan sheets$1075 No 559Low Voltage AC Electric-power oporfater fnr 035 motor spans 44 inS475 No 561Wild Ham RC Tri-motar sponster spans 63 ones 25 engines Two plan sheets5900 No 553to AC AMA Class B 2-Meter Sailplane has 703/e-in-spOn toam wing$725 No 565Sea Loon AC Pod-and-hanra seaplane 15 power spans 4W/u in$675 No 568Avro 560 FF Mini-electric Scale 23 British utralight spans 30 in5200 No 569Electroagmak AC Electric aesehatic plane spans 44 uses 00 motor$550 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-balas bout-up surtaces$400 No 571Voyager CL Sorta-Scale A-powemd voodoo amund-the-world plane spans 46/e in$225 No 572TR-260 AC Sport Scale Aesehatic plane 4-steeke 60/65 power spans 60 in$1100 No 573Pink Lady F-40 CL Bill Wisniewokis Fonnala 40 Speedster 40 power spans 27 in$400 No 575Scorpion 60 AC Fun-fly aembaitc plant 60 power spans 501/s in$1150 No 576Serendipltyl ndant EZB racold-helder opens 17% in$325 No 577Halflite CL /sA Combat plane has toem wing spans 30 inS225 No 576Schwelzer 1-268 AC Quarter-scale Sailplane spans 125 Tow plan sheets$1475 No 579Lockheed P438 CL Pmcision Scale WW II fighter far twin 4So spans 55 iv Fowler flaps etc Three plan sheets$1000 No 580Parnall Pixie PP Rubber Scale Gelden Age British biplane 112 scale spans 31/a in$375 No 581Gee Bee Model Y AC Golden Age Aecer spans 72 scale 60 power Thwe plan sheets$1175 No 582Heinkel 100 CL Sport Scale 01W II fighter tor 40 engine spans 61/o otnecaim mostly car/deard Two plan shts$1250 No553Spoetwagon AC Radis-ised sport FF model spans 54 ones 10115 engine$700 No 584Happy Days CL Intermediate trainer/Stunter spans 42 in. uses 20135 engine$575 No 585Dragonfly PP fligh-porfermance P-30 Aahber ship opens 30 iv weighs 50 gramoS400 No 586Snapdragon AC Fan-fly/sporaiter far 25130 engines spans 45 in$600 No 587Pilatus PC-9 CL ProOle Scalelfltunterloportster spans 50 in. ows 29135 engine$550 No 588Malah AC Slope-Searing Sailplane opens 41 ones 2 AC channels5425 No 589Vlckera Weflesley AC Spon Scale WW II bomber spans 00 in. uses 40 4-cycle engine Two p100 sheets no dec$1250 No 590Bud Lite Laser Stunter CL Stoeter le scalelike spain 63 uses 60 engine Two plan sheets$1050 No 591Focke-Wulfi FW 190-A AC Sport Scale 01W II fighter spans 50 in. uses 35145 2-strake engine Twa plan sht no doc$1350 No 592 ET CL trainerlapodster ones 05 electrc power 0-cell bafler5 pack Wingspan 24 in $ 475 Circle numbers plans wish order 193 414 490 531 554 570 579 587 239 440 506 533 555 571 580 588 262 447 512 534 559 572 581 589 310 454 514 535 561 573 582 590 314 457 521 539 563 575 583 591 326 460 522 541 565 576 584 592 332 465 525 544 568 577 585 593 386 478 528 549 569 578 586 594 Plan price inCIUdOS first Class postage US delivery Air Mail over 300 miles ordBrs non-US address lease add $250 Air Mail asIa e handlin Ian Make Check money order payable US funds drawn US bagk Model Aviation c/c AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ AMA No ______________ EJ AM F STREET CITY ZIP RC Soaring/Blakeslee Continued page 169 gust however may abte wanted very thankful large number people have contributed project continue support following excerpt taken last progress report 4-15-87 point entire measurement sys tem has received considerable improvement thanks contributions time money equipment David Fraser Fraser-Volpe Corp PA Professors AJ Smits SH Lam HC Curtiss Princeton University Ray Olsen AZ Professor MD Maughmer Penn State Herk Stokely Soartech MKS Instru ments MA Scientific Solutions Inc OH have also received help lee Murray WI Professor Mark Drela MIT Preben Norhoim Denmark have overwhelming response initial letter asking help building wind tunnel models addition listed above following have also offered build models us Chuck Anderson TN Jerry Arana CA Ken Bates Ken Shaw MI Tony Beck VA Ron Carter UT Jack Cash MD Bart Como TX Seth Dawson Co CA David Fraser Co PA Duane Harris IA Peter Illick CO Harley Michaelis WA Carl Mobs MI Mark Nankivil Co MO Ted Off CA RJ Ostrander NJ Tom Pratt OH Mike Reed CA Joe Rumineki NC Ty son Sawyer NH Gordon Stratton NY Doug Stout NJ Jeff Troy VA Over last several months Jerry Jackson TX Armin Saxer Switzerland Chuck Gris wold CA HJ Rogers OH Brian Smith OH Tom Yamokoski OH Trey Wood AL Karl Widiner CA Todd Enlund LA have helped us either making contributions offer ing build wind tunnel models hope no has left out begin taking measure ments will sure let know Thanks again Everyone knows important experi ments Michael John Im pleased able pass along progress reports ac knowledge Sailplaners helping models other support hear more good reports about existing Selig airfoils further improvements can made im pact model Sailpianes should tremendous Want electrostatic stabilizer October 1987 column description Maynard Hill workings electrostatic stabilizers generated lot interest readers wrote requesting copies Maynards full write-up interested purchasing ready-made sta bilizer may purchase Maynard $174 plus $28 required two polonium io nizers Contact Maynard Aero Probe Technol ogy 2001 Norvale Rd Silver Spring MD 20906 1988 Ohio Cup contests Dayton Area Ther mal Soarers DARTS will host series four contests total fliers best two scores will win Ohio Cup Dates June 1819 August 20-21 Jim Martin 513/376-9046 will CD June contests Gale Lerach 513/429-2543 Jerry Shape 513/843-5085 will CDs August ones Sounds like great idea State wide bragging rights 172 Model Aviation 0 03 0 coo Coo -set o g 513 zo Os es - 00as -2 0 ases n o 2 5 Gac 0 V Ces ens 0 e V 00 oat C 0 SE 8200 00 C n 82 01 C -B 0