Radio Control Soaring Byron Blakeslee editor added some confusion scheme things editorial comment about team funding inserted Byron Blakeslees June 1987 column comment worded such way readers might mistakenly believe contributions Team Fund could used defray expenses involved team member taking spouse World Champs Such NOT case Team Fund used help defray costs taking additional team-support person nel Champs help pay rental vehicles spouse accompanies team mem ber spouses expenses respon sibility team member RMcM CLUB month following write-up Clarence Sailplane Society comes club secretary Lyn Perry newsletter editor Roman Pasyz Roman also took pictures supplied information captions Clarence Sailplane Society AMAchartered club 1883 begun late 1982 founding father Ed Waters no fly him members drawn across Western New York including Buffalo surrounding towns members including Ed Clarence NY flying site series marvelous turf farms located Clarence hence name 54 us interesting guys however illustrious members include AMA 20 former AMA President John Grigg AMA 195 Ron Kirk beeyootiful work LJMP Pantera Prodigyjust won annual building contest Viking Playboy Electrics Cur rent club president Jim Sonnenmeier completing doctorate aerospace engineering State University New York Buffalo some members work local aerospace companies number several teachers among ranks run gamut ages high school students retirees often beat us younger folks fly anything evidenced club inventory everything 11-lb XCs two six Windsongs three flying three building Sailaire etc l0-oz Zephyrs Gnomes like last count 23 Gentle Ladies being flown result one-design contest held 1985 weve taken few steps Electric 10 us have Electrics planning first fun-fly summer Since founding weve developed active contest calendar frequently attend events Rochester NY well Canada proud est 1985 Carl Goldberg Memorial Gentle Lady contest generated $300 medical research 1986 host ing two-day LSF Northeastern Regionals attracted over 30 fliers Parenthetically six us have achieved LSF Level III status hard work Level IV Thanks chance brag bit its wonder ful hobby intend continue having fun flying forever new Gilding book titled Radio Controlled Glid ing Dave Jones has recently come us Britain aimed beginners intermediates both Thermal Slope flying Dave editor 40 Model Aviation Roman aryz Sagitta XC-Pius has seversi mods standard kit thicker fuliy sheeted main wing panels duel-blade wing joiners thicker horizontal tail 3-In fuselage stretch Sin thetail Unballasted weight 10 ib 11 oz uses ROG takeoffs Plane has fastest Speed run clubs modified F3B contest Paryz photo Dave Jones new Soaring book aimed beginners info coiumn John Wyss poseawith the86 version P3B design Virga NoteClarence Sailplane Societys annual covering contest siways has piastic-pipe cradle keep plane out harms waygood turnout club has 6 winter meetings yearly Paryz plc FormerAMA PresidentJohn Griga launches LIMP Meteor Clarence Soaring Societys ciub fieid Paryz photo Thermal Soaring column British magazine Radio Control Models Electronics Slope parts book written Keith Thomas formerly wrote Slope Soar ing column same magazine Ive read entire book Id recommend highly getting started great rapidly grow ing hobby/sport Rather describing about think would illuminating quote Daves introduction great source sadness to see keen beginner become disillusioned dis gruntled refugee Soaring simply because has made elementary mistakes hoped book will dispel mists inex perience jargon misfortune heartbreaks surround learning fly model Sailplanes ways book wished able read first few years Soaring aim book provide infor mation advice necessary beginner Soaring able become competent sport flier other words aimed pilots knowledge skill range raw beginners sort expertise expected competent sport flier things firsthand experience can teach book will allow rise armchair immediately successful However will allow Continued page 129 Dave Thompson builtthiswinch frame K-Mart hand truck Wheeis removed during launches battery charger buiit heavy-duty emergency knife switch came RV shop [E IX] ID FA U J 1U - W.hc~ iSeakd Ttcoe-SaoI t$cfoocdUoOcdeJq - Designed Basic Macta Flying Medal Following Bout-Up Prototype Practice Wood ond Fobic p...If RalIico Roiloinr-o Uco ThorccShecddoi Yoo r$j~M y Howl Historically Presented 4 Jenny 537 81 OH Mocqoito tb $42 57Pt$39 108 OH MocqoBoecic $55 ne-Roe$52 98 Scror PTl7Koydet $56 60 Scyornrerin S68 $2471 Sect DC3 C471 Pore toon $32 99 NtIIc Wideec P61 $69 SkyCe 0Doehttlnc$48- 72 CenOSUl /4 L&S $44 O5 nocoope Spoct $36- lOt Ce 0361/4 L&S $56 loll Spn toildog $43r 60 Sooglec M2 Moil $24 107 Aenenco C3 Opt $35 68 tictel tclldeg Pt $30 42 Hoccend tece Ike $45 59 treentoce McLA 554 . 78 Some WW $35 107 Gecro tcenct Ftp $54ffiro 63 Ce Gechk PliC $42 69 Lindbegc NO211 $28 94 Cc Cechk Ft C $54 91 Liodbnrgc NO511 $39 eter Cornet fec $24 96 WeNWiNoc Roc 62 teerMMclligen $35 74 C Helldcn St2C4 $55 94 HccnMrldclligoe $45 155 Po,clrPS19 Tr $59 63 teeing P-26A Pt $36 60 Woce Taper-Wing $36 84 teeing P26A Pt $48 90 Wece TepcnWieg $48 69 Wece C6 Cobb$36 75 Wecrl 4 Lyconda $32 44 Bench C17-t Slog $38 100 Woct 4 Lyceede $49 * O6tencb C17-t Slog $49 S7PedT o 4AT $36 j 55 Leck 11 Elactro 830 76 Perd Tenet 4AT $48 82 Lock 11 Electre 845 1 l4Pedrjnrtn4AT$65 Strecen T/W 087 $18 96 telloece Airencie $40 81 Strnceo 0/W Sty $36 93 Lonning C2Acpb $49 132 Stirreen T/W St7 $38 58 Onon J3P Sock $39 Sttnctel Pt P38- 5311 ltGnonr J3P Occic $56 118 tnrctol Pt P208 $45 134 Lock Al topcc $484 Tcrnnne Pecco 845 63 Lock Al Eepnecc$24 56Con Werlnk P45 $34 83 Lock Sc trace $36 60 Vogt Concoin P411 $3577WWrnc 131 tndL $48 80 VogI Concoin P48 $6963 C Onolroock P7C1 $45 *78 Lock Light5 P38 83894 C Snolocelc P7C1 $5756 tepSee-Bne Are $34 108 Siko 038 Anrpfr $49 74 tnpSno$ae Arc $39 60 toning 160 Spent $36.- 7g Pipe J3 Cob$29 90 toeing tog Sport $49 156 Piper 33 Cob$39- 75 Nennhop Goocoro $48 9$ Lock Hodeen tork $38 96 N 63 Gron P6P Hellcat $28 90 0 77 toning 817G Font $35 60S 103 toe 0170 Pent $55 190 68 Wectl Whiniceind $32 78 C 48 N Acre Neele 839 104 6g ttononao VToil $39 65 M 77 Loccoerbe Sedon 825 97 M 72 NA 825 $onrbe $49 65 C 65 MMoocdnn 826 849 94 C Sold Thro Snob, Pice Ocer 1400 Morn SOc Up 612 Add 10% oil oder chipping & cc. ntcte Con & Mee Slcnnhenr Ic 15% 25% ci f0~Jc Pictoriol cotolog $200 linclodec Pnicn Lien Pnice lid encconolonn5loO ltkyerrtorergn odd$108 CLEVELAND MODEL&SUPPLY cOoO0 t eoccceocnrotretc 1 Ncr tereric circod tin rc baccce t03$7t DtTtOtT AVE CLEVELAND OHIO 44182 joinner ocearco oarcnc PeoncreS IS PMSST 1OrDST112161961 3000 locoeccocOeccer DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 SPECIAL PRO SERIES PITCH 3 4 28 3 3* 4a Sn 6 3 3&3/4a 4 5 6 8 4 5 6 6*n 7 4 5 6 6* 7 7* 45 6 6W 6* 7 8W 6EW 4 6 7 7* 7*a 7&3/4 8 6EW0 6 7 4W 5 5W 6 5 6 5 6 5 6 6 Tn 8 FOUR-CYCLE TAILORED HELICAL PITCH 1266* 7 7* 8 13677*8 146 7 7*8 1567 16678 PYLON RACING 75N 5*N*279 8&3/46* 6&3/4 7 7* 7&3/4*289 97 7* 7&3/4$289 W Wtde blade EW Extra wide N Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX PRICE $149 *179 *189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 September 1987 41 OUR INVENTORY AVERAGES OVER 8000 PROPS! Air e Land r FOR RADIO CONTROL CRYSTALS RELY ON JAN FOR 3-WAY HELP 1 TECHNICALLY CORRECT Reliable frequency control 2 QUICK TURNAROUND huge inventory prompt service Emergency Order Plan LOW PRICES QUARTZ CRYSTALS FOR Two-Way stry ne Amateurs Microprocessor Scanners yists FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 ViSA11 ILW CALL 1-800-237-3063 FREE except Florida CLOSED FRIDAYS WHY DO I 0 C 0 r- 0 N Soarings Finest FLY DODGSON DESIGNS GLIDERS Ask 30 Windsong flyers 1986 NW Soaring Season Championship contest Ask 25 Camano Windsong flyers 1987 Western Soaring Championships Modesto CA Wherever great soaring being done Dodgson design gliders doing better Pictured Shawn Lenci Escalon CA some 1986 trophies won Dodgson Designs Gliders flying open class bad kid Send 2 stamps catalog WIN OSONG CAMANO 2Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify BETA 8mm format VISA & MASTER CHARGE Oko 15995Pixy 14995Ply P1 7500 DODGSON DESIGNS 0 DAMSON ROAD BOTHELL WA 980211 haps hardest part younger mod elers carving balsa nose cones shape gang new razor-andsharp-knife carving scene fortunately no fingers slicedthough Erik did earn Purple Heart award class mates nicked forefinger drawing bit blood Now covering Should wings tails fuselages covered first Wings de creed chief instructor Mel covering material handed out Much discussion about color combinations ensued trades between students after lively con sultations designs felt suited him best provided fun Whoever can remember first attempt iron-on method covering models knows what students first covered wings looked like wrinided mess said Lars forged ahead own What can lamented students quite quality-con scious now blow-dryer heat gun supplied chief instructor Mel came rescue 15 minutes wing covering tight drum Lars happily received peers congratulations beautiful translucent red-and-green wing first teenagers wings finished built heard amazed parent eager fledglings proudly carried beautiful multicolored wings out carefully loaded Gliders waiting cars Seven wings covered quitting time Erik joined class late scrambling finish model decided stay after hours finish up structor Things really getting exciting now Radios ordered due last session Day 6 Mel old-timers smiled Lets land em weve got em really hooked now radios arrived Ever see eight RC systems colorful boxes nested side big box Naturally old-timer would want check out goods inside Futaba Conquest cartons before Sat urdays class Once sure worked class members called come pick up new systems get ac quainted charge up Saturdays class Day 7 arrived humming Right away though ran some hurdles first problem caused decision use Quik Link keepers between servos torque rods positioned servos Quik Links proved too high cabin interior Goldberg Gentle Ladys small fuse lage bumped against bottom wing So out Quik Links back plans students taught make Z-bend forward end music wire linked torque rod tail surface Daves Jeffs Kens Eriks radios fitted torque rods con nected rudders elevators four just about finished Matt Charles Lars Case gotten behind due going out town spring break tut tut Jeff Erik firstto discover next problem wont fit cried out almost simultaneously plans called square battery Futabas flat Uh oh young mens introduction common RC malady final assembly rework gave chance try out ingenuity Jeff solved problem stripping plastic covering battery re positioning batteries square bending lead-out wires re-wrap ping black tape obtained during lunch break Jeff wanted finish Erik figured way fit battery case special angle Others followed suit left switch harness hook installation hi-starting complete final assembly work Some Gliders readier others rapidly heading toward longawaited flight test Wed counted having pictures launchings Sunday supplement story Mike photographer showed up take outdoor photos finished near-finished models brought news story would appear next Monday no time arrange photo session official flight tests him grand finale would make papers after best-laid plans. old-timer heard grumble disappointment yesbut consolation story would out published Bulletin before Bend Aero Modelers mall show scheduled next weekend Giving students opportunity showing off Gentle Lady Gliders alongside RAM club members aircraft would make fitting end Learn Fly RC Airplanes class Flying would have await permission Bends fickle spring weather Travelers passing through central Oregon Bend reported have noticed looked skywards unusual flurry activity vicinity 27th Knott spring 1987 Beneath flock Gliders thermaling overhead some may have observed stood two figures necks craned eagerly upwards travelers come closer bent ear would have seen chief structor Mel smiling old-timer cohorts heard him pronounceWe landed em Now next school RC Soaring/Blakeslee Continued page 41 tackle learning task hopefully greater understanding knowledge chance success hook available Zenith Aviation Books see ad issue Wilshire Model Center $1595 word warning Id like pass along about book since written mainly British Soarers contains descriptions things dont have over hand-towing principal method launching Brit ain virtually unknown US Dave also describes BARCS British Association Radio Control Soarers rules competitions BARCS organizes Actually standard BARCS competition very interesting would worth try over First always fly man-on-mannot uniquebut fun part what call percentage slot objective fly longest eight- 10- 15-minute time period Continued page 133 September 1987 129 INTRODUCING ST D M VARIABLE SPEED THE NEW Ft rrIFI POWER CENTER 1 Variable Control Outlet Dremel & Brush Type Motor Tools 5 Outlets Handle Covering Irons Heat Guns & Soldering Tools etc 15 Amp Breaker W/Reset ted On/Off Switch Duty Power Cord H/Duty Steel Housing ting Tabs es May Vary USA Designed Engineered Modeler Serious Model BuiIdrs DEALER INQUIRIES ARE WELCOME WRITE OR CALL SEND MONEY ORDER OR CHECK TODAY NO CODs PLEASE SiI2Y* liNt tN1[tIIQIIDILIISI[S P 0 BOX 23492 MILWAUKEE WI 53223 354-8698 SPECIAL $3OO ntage & Handling WI Modelers MODEL #ABI-SKE add 5% tax RC Soaring/Blakeslee Continued page 129 everybody flight group ready blow horn start slot think air good launch hand-tow right away flight time starting release air doesnt look too good can wait until some body else launches see real cat-and-mouse game have ground horn blows end slot careful timing land ing required winner slot given 1000 points others slot given percentage 1000 points depending upon score landing points compared winners score BARCS competitions have several preliminary rounds top nine fliers go head-to-head flyoff determine winner Sounds exciting doesnt Reading books magazines other countries has advantage giving us some new interesting per spectives Progress Princeton Michael Selig wrote let everyone know about progress testing air foils low-speed wind tunnel Princeton University Michael listed names modelers making wing section models people have contributed time and/or money measurement systems said contributions have amounted almost $15000 body Michaels letter Since have such large number build ers will have some airfoils duplicated can examine effects model variability performance stage have orders out 12 models expect begin coming around same time will have system up running will split experimental program two phases first will measure lift drag previously mentioned airfoils Reynolds numbers 100000 200000 300000 results experiments will compared predictions Eppler Somers computer program design anal ysis low-speed airfoils recent ISES code two-dimensional viscous aero dynamic design analysis code developed Drela Giles MIT Eppler Somers code uses potential flow calculate inviscid velocity distributions Drag calculated using surface velocity dis tribution edge velocity integral boundary layer equations cannot account separation bubbles ISES code discretizes Euler equations describe outer inviscid flow couples boundary layer through displacement thickness Again integral boundary layer equa tion used closure models elab orate used Eppler Somers Fur thermore ISES code appears capture features separation bubbles therefore can account additional bubble drag preliminary work ISES code seems better lower Reynolds numbers Eppler Somers code second phase will design test least 10 new airfoils airfoils will de signed Eppler Somers code design mode comparisons between theory experiment first phase ex pect identify favorable features pressure distributions low-Reynolds-number airfoils should incorporated design new airfoils will screen newly designed air foil using ISES code predictions look promising will have built test wind tunnel way expect finish several good low-Reynolds-number airfoils RC Sailplanes effort raise funds additional equipment will make video entitled Low Reynolds Number Airfoil Testing Princeton University will describe basic aero dynamics airfoils low Reynolds numbers discuss detail particular facility per forming low-Reynolds-number airfoil measure ments VHS tape will roughly 40-minutes long available $25 donation amount $8 will go cost tape postage $17 will put toward equipment As final note though plan finish testing 30 airfoils end August ex periments will stop As long interest tests will continue way another PS think taking long time us answer letters youre probably right being swamped mail have questions about please write directly authors John Donovan & Michael Selig Dept Mech Aero Engi neering Engineering Quadrangle Princeton Uni versity Princeton NJ 085g winches John Wyss article F3B winches sparked considerable interest John Men ard Torrey Pines Club San Diego good enough write share findings building chib winches tested different types winches over four-year period including some $2000 F3B winches DGM motors monofilament line found must match drum size motor get best performance rebuilt Ford long-shaft motor found winch drum three-inch-diameter hub 6-in -diameter end plates 4 between end plates worked best drums must welded -in aluminum end plates testing blew up fabricated bolted together drum DGM motor new winches smooth strong launch almost well F3B winches much less cost have retired machinist named Ken Moore makes frames drums special turnarounds us builds five time because setup time turnaround fantastic included Kens $150 price has 2/2-in-diameter recessed pulley double ball bearings use two solenoids series because case gets stuck other will still open shut off power also use toggle safety switch case foot switch sticks have used same type wiring club winches over six years competition sport flying have runaway winch ball bear ing has machined fit end starter shaft however needle bearing very easy install some members winches have given great service just adding bearing alone parts use along prices Caner precision rebuilt Ford long-shaft starter #31 l5$30 Wells Mfg Co #F496 solenoids two wired series$12 Willys Electronic Sup ply safety switch #35-080 SPST on/off ISA 125 VAC$3 80 Foot switchSelectra Switch SS5 19$450 Selectras address PO Box 1585 Covina CA 91722 Needle bearing Torrington B1012$l87 Ball bearing 5/s-in shaft$3 25 Connectors$3l0 Cables$l 110 Aluminum drum frame turnaround$3059 Machining welding$ 150 sub-total$25021 Delco Dura Power 650 amp-hour battery$70 #15 #18 braided nylon linel 200 ft$ 10 total$33021 Thanks very much good information John anyone wants info suspect letter John SASE should trick Johns address 511 CalIe De Los Potros Bonita CA 92002 Confused about new frequencies new frequencies something RCers must know about understand Im going go column because much being written magazine Fred Marks George Myers others What want call attention September 1987 133 series four articles Flying Models magazine Bob Aberle Bob chairman AMAs Frequency Committee new fre quencies secured FCC articles June through September issues FM cover history frequency prob lems right through new equipment will required fly 20 kHz other 10 kHz commercial broadcasters different perspective always good think youll enjoy reading Bobs four articles Soartech #6 available Most Sailplaners have undoubtedly heard Soartech series jour nals edited published Herk Stokely Vir ginia Herk also writes Soaring column Flying Models magazine Herk puts out Soartech once twice year contains papers mainly technical nature appeal greatly scientists among us Once read can understand amount work Herk various authors put No 6 contains 154 pages includes Wind tunnel testing low-Reynolds-Number-airfoils Princeton University Michael Selig German/EnglishEnglish/German technical dic tionary RC Sailplane terminology Armin Saxer Optimization System RC Sail plane Armin Saxer Airfoil Families 12A 14A ISA RoIf Girsberger Equi librium Stability Load Tail David Fraser Friction Drag Pressure Drag Airfoils WH Phillips BASIC language program estimating weight RC Sailplanesbased Schlosser Max Cher noff New Developments plotting air foils home computers dot-matrix print ers k Anderson Pascal program automatic performance estimationbased VJIITAQE -C PLAN CONSOLIDATED PBY-5A CATALINA 9 FT WING SPAN ALL RIBS B PULL FORMtRS SHOWN ON PLANS1 PLASrIC ENGCOWLS sioBO PR CLEAR GUN BUSTERS $ 760 PR 4 LARGE PLAN SHEETS s $895 GET WING SPAN MODEL PBY-5A ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $ 550 PR ADD V 300 POSTAGE Saxer Simons programs Soartech No 2 Ed Karns Calculation Neutral Point Static Margin Ernie Currington Issue No 6 back issues available Herk very reasonable $5 per copy Herks address 1504 Horseshoe Circle Virginia Beach VA 23451 F3B news Did everyone notice three items important news Don Lowes Presidents Cor ner July issue AMA News maga zine First announced 1989 F3B World Championships would held countryprobably somewhere East Coast fact Soaring World Championships will just four World Championships will going same time other World Champs will Pattern Pylon Helicopter really excellent news because will give spectators chance see other model flying addition main interest other announcements F3B rules expected 1988 will proposal drop Speed task Dick Crowley April Plenary meeting said sup port dropping Speed task fairly unani mous appears nature F3B will change drastically below proposal West Germany eliminate Weak Link rule accepted Technical Committee majority still feel should some means limiting power imparted model during launch As yet nobody has able write rules winches would limit power also prevent people going megabuck exotic machinery Ground War call Europe Finally Builder Model rule dropped people flying com pletely finished Hans Muller planes little point claiming buildership just because installed radio F3B Speed task assume CLAM Plenary Session next April approves drop ping Speed task next question will affect F3B designs talking John Wyss about learned thinks designers will go larger planes higher-aspect-ratio wings aim will get higher launches windy weather improve L/D max imize number laps can flown four minutes allowed course Distance task Big planes have consider weak link John feels weak link actually pretty strong wont inhibit planes bit larger normal today next question will two-task F3B event attract competitors Rightly wrongly Speed task probably did scare off some beginners once fliers became accustomed F3B flying no fear task So elimination Speed will probably go down perception alteration rather real change way event flown As long talking about International Soaring Id like get something off chest Ive long thought about having International event Duration No Speed no Dis tance tasks elimination Speed will prob ably diminish demand Duration World Champs still think would have merit six-minute precision task now run F3B pretty much automatic considered task decent pilots dont lose points Duration-only event could use British percentage slot system would excit ing competitors spectators alike What Im really interested seeing what type ship would developed might much differ ent designs will seeing Duration/Distance event other hand might big polyhedral rudder/elevator plane New Wilshire catalog latest dated May 1987 Sailplane catalog available Wilshire Model Center Wilshire has established repu tation importing interesting Sailplanes around worldespecially Germany great blow owner Hans Weiss suddenly died about two years ago fortunately Mrs Maddy Weiss has kept shop going Im sure Hans would approve planes Wilshires current catalog too kits catalog list Id like name manufacturers have least plane represented Germany Air Jet successor Carrera Michael Beineke CHK Modell Eisman Mul tiplex kits radios accessories Graupner Robbe Rowing KDH Modellbau Great Britain Edmonds Micro Mold US Mark Grand Models Cheetah Models Bob Scaly Quality Fiberglass JM Glascraft Aeronautics Larry Hargraves Models Advanced Glider Concepts Sailplanes Santa Monica Magnum Hi Starts think partial lineup likely see local hobby store youre market kit moment Wilshire catalog lot fun just look over get familiar what available Sailplane-wise Send $250 Wilshire 2836 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 8289362 Elec tries another $250 will get Wilshires cat alog electric motors kits etc just full Sailplane catalog Computerized airfoil plotting design pro 134 Model Aviation IGITIOIIII TREKS PROFILEVCOMBATVRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UKIFLOW & STIIDD hum Dliii Ful Ingredients Fo detailed broclum50C stamps/check CAROLINA-TAFFINDER 8345 Delhi Road Dept North Charleston SC 29418 803-553-7169 CATALOGOVER 50 PLANS $00 DEALERS WRITE WORLDWIDE SID MORGAN 13157 ORMOND BELLE VILLE 4BIII USA youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 40, 41, 129, 133, 134, 135
Radio Control Soaring Byron Blakeslee editor added some confusion scheme things editorial comment about team funding inserted Byron Blakeslees June 1987 column comment worded such way readers might mistakenly believe contributions Team Fund could used defray expenses involved team member taking spouse World Champs Such NOT case Team Fund used help defray costs taking additional team-support person nel Champs help pay rental vehicles spouse accompanies team mem ber spouses expenses respon sibility team member RMcM CLUB month following write-up Clarence Sailplane Society comes club secretary Lyn Perry newsletter editor Roman Pasyz Roman also took pictures supplied information captions Clarence Sailplane Society AMAchartered club 1883 begun late 1982 founding father Ed Waters no fly him members drawn across Western New York including Buffalo surrounding towns members including Ed Clarence NY flying site series marvelous turf farms located Clarence hence name 54 us interesting guys however illustrious members include AMA 20 former AMA President John Grigg AMA 195 Ron Kirk beeyootiful work LJMP Pantera Prodigyjust won annual building contest Viking Playboy Electrics Cur rent club president Jim Sonnenmeier completing doctorate aerospace engineering State University New York Buffalo some members work local aerospace companies number several teachers among ranks run gamut ages high school students retirees often beat us younger folks fly anything evidenced club inventory everything 11-lb XCs two six Windsongs three flying three building Sailaire etc l0-oz Zephyrs Gnomes like last count 23 Gentle Ladies being flown result one-design contest held 1985 weve taken few steps Electric 10 us have Electrics planning first fun-fly summer Since founding weve developed active contest calendar frequently attend events Rochester NY well Canada proud est 1985 Carl Goldberg Memorial Gentle Lady contest generated $300 medical research 1986 host ing two-day LSF Northeastern Regionals attracted over 30 fliers Parenthetically six us have achieved LSF Level III status hard work Level IV Thanks chance brag bit its wonder ful hobby intend continue having fun flying forever new Gilding book titled Radio Controlled Glid ing Dave Jones has recently come us Britain aimed beginners intermediates both Thermal Slope flying Dave editor 40 Model Aviation Roman aryz Sagitta XC-Pius has seversi mods standard kit thicker fuliy sheeted main wing panels duel-blade wing joiners thicker horizontal tail 3-In fuselage stretch Sin thetail Unballasted weight 10 ib 11 oz uses ROG takeoffs Plane has fastest Speed run clubs modified F3B contest Paryz photo Dave Jones new Soaring book aimed beginners info coiumn John Wyss poseawith the86 version P3B design Virga NoteClarence Sailplane Societys annual covering contest siways has piastic-pipe cradle keep plane out harms waygood turnout club has 6 winter meetings yearly Paryz plc FormerAMA PresidentJohn Griga launches LIMP Meteor Clarence Soaring Societys ciub fieid Paryz photo Thermal Soaring column British magazine Radio Control Models Electronics Slope parts book written Keith Thomas formerly wrote Slope Soar ing column same magazine Ive read entire book Id recommend highly getting started great rapidly grow ing hobby/sport Rather describing about think would illuminating quote Daves introduction great source sadness to see keen beginner become disillusioned dis gruntled refugee Soaring simply because has made elementary mistakes hoped book will dispel mists inex perience jargon misfortune heartbreaks surround learning fly model Sailplanes ways book wished able read first few years Soaring aim book provide infor mation advice necessary beginner Soaring able become competent sport flier other words aimed pilots knowledge skill range raw beginners sort expertise expected competent sport flier things firsthand experience can teach book will allow rise armchair immediately successful However will allow Continued page 129 Dave Thompson builtthiswinch frame K-Mart hand truck Wheeis removed during launches battery charger buiit heavy-duty emergency knife switch came RV shop [E IX] ID FA U J 1U - W.hc~ iSeakd Ttcoe-SaoI t$cfoocdUoOcdeJq - Designed Basic Macta Flying Medal Following Bout-Up Prototype Practice Wood ond Fobic p...If RalIico Roiloinr-o Uco ThorccShecddoi Yoo r$j~M y Howl Historically Presented 4 Jenny 537 81 OH Mocqoito tb $42 57Pt$39 108 OH MocqoBoecic $55 ne-Roe$52 98 Scror PTl7Koydet $56 60 Scyornrerin S68 $2471 Sect DC3 C471 Pore toon $32 99 NtIIc Wideec P61 $69 SkyCe 0Doehttlnc$48- 72 CenOSUl /4 L&S $44 O5 nocoope Spoct $36- lOt Ce 0361/4 L&S $56 loll Spn toildog $43r 60 Sooglec M2 Moil $24 107 Aenenco C3 Opt $35 68 tictel tclldeg Pt $30 42 Hoccend tece Ike $45 59 treentoce McLA 554 . 78 Some WW $35 107 Gecro tcenct Ftp $54ffiro 63 Ce Gechk PliC $42 69 Lindbegc NO211 $28 94 Cc Cechk Ft C $54 91 Liodbnrgc NO511 $39 eter Cornet fec $24 96 WeNWiNoc Roc 62 teerMMclligen $35 74 C Helldcn St2C4 $55 94 HccnMrldclligoe $45 155 Po,clrPS19 Tr $59 63 teeing P-26A Pt $36 60 Woce Taper-Wing $36 84 teeing P26A Pt $48 90 Wece TepcnWieg $48 69 Wece C6 Cobb$36 75 Wecrl 4 Lyconda $32 44 Bench C17-t Slog $38 100 Woct 4 Lyceede $49 * O6tencb C17-t Slog $49 S7PedT o 4AT $36 j 55 Leck 11 Elactro 830 76 Perd Tenet 4AT $48 82 Lock 11 Electre 845 1 l4Pedrjnrtn4AT$65 Strecen T/W 087 $18 96 telloece Airencie $40 81 Strnceo 0/W Sty $36 93 Lonning C2Acpb $49 132 Stirreen T/W St7 $38 58 Onon J3P Sock $39 Sttnctel Pt P38- 5311 ltGnonr J3P Occic $56 118 tnrctol Pt P208 $45 134 Lock Al topcc $484 Tcrnnne Pecco 845 63 Lock Al Eepnecc$24 56Con Werlnk P45 $34 83 Lock Sc trace $36 60 Vogt Concoin P411 $3577WWrnc 131 tndL $48 80 VogI Concoin P48 $6963 C Onolroock P7C1 $45 *78 Lock Light5 P38 83894 C Snolocelc P7C1 $5756 tepSee-Bne Are $34 108 Siko 038 Anrpfr $49 74 tnpSno$ae Arc $39 60 toning 160 Spent $36.- 7g Pipe J3 Cob$29 90 toeing tog Sport $49 156 Piper 33 Cob$39- 75 Nennhop Goocoro $48 9$ Lock Hodeen tork $38 96 N 63 Gron P6P Hellcat $28 90 0 77 toning 817G Font $35 60S 103 toe 0170 Pent $55 190 68 Wectl Whiniceind $32 78 C 48 N Acre Neele 839 104 6g ttononao VToil $39 65 M 77 Loccoerbe Sedon 825 97 M 72 NA 825 $onrbe $49 65 C 65 MMoocdnn 826 849 94 C Sold Thro Snob, Pice Ocer 1400 Morn SOc Up 612 Add 10% oil oder chipping & cc. ntcte Con & Mee Slcnnhenr Ic 15% 25% ci f0~Jc Pictoriol cotolog $200 linclodec Pnicn Lien Pnice lid encconolonn5loO ltkyerrtorergn odd$108 CLEVELAND MODEL&SUPPLY cOoO0 t eoccceocnrotretc 1 Ncr tereric circod tin rc baccce t03$7t DtTtOtT AVE CLEVELAND OHIO 44182 joinner ocearco oarcnc PeoncreS IS PMSST 1OrDST112161961 3000 locoeccocOeccer DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 SPECIAL PRO SERIES PITCH 3 4 28 3 3* 4a Sn 6 3 3&3/4a 4 5 6 8 4 5 6 6*n 7 4 5 6 6* 7 7* 45 6 6W 6* 7 8W 6EW 4 6 7 7* 7*a 7&3/4 8 6EW0 6 7 4W 5 5W 6 5 6 5 6 5 6 6 Tn 8 FOUR-CYCLE TAILORED HELICAL PITCH 1266* 7 7* 8 13677*8 146 7 7*8 1567 16678 PYLON RACING 75N 5*N*279 8&3/46* 6&3/4 7 7* 7&3/4*289 97 7* 7&3/4$289 W Wtde blade EW Extra wide N Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX PRICE $149 *179 *189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 September 1987 41 OUR INVENTORY AVERAGES OVER 8000 PROPS! Air e Land r FOR RADIO CONTROL CRYSTALS RELY ON JAN FOR 3-WAY HELP 1 TECHNICALLY CORRECT Reliable frequency control 2 QUICK TURNAROUND huge inventory prompt service Emergency Order Plan LOW PRICES QUARTZ CRYSTALS FOR Two-Way stry ne Amateurs Microprocessor Scanners yists FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 ViSA11 ILW CALL 1-800-237-3063 FREE except Florida CLOSED FRIDAYS WHY DO I 0 C 0 r- 0 N Soarings Finest FLY DODGSON DESIGNS GLIDERS Ask 30 Windsong flyers 1986 NW Soaring Season Championship contest Ask 25 Camano Windsong flyers 1987 Western Soaring Championships Modesto CA Wherever great soaring being done Dodgson design gliders doing better Pictured Shawn Lenci Escalon CA some 1986 trophies won Dodgson Designs Gliders flying open class bad kid Send 2 stamps catalog WIN OSONG CAMANO 2Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify BETA 8mm format VISA & MASTER CHARGE Oko 15995Pixy 14995Ply P1 7500 DODGSON DESIGNS 0 DAMSON ROAD BOTHELL WA 980211 haps hardest part younger mod elers carving balsa nose cones shape gang new razor-andsharp-knife carving scene fortunately no fingers slicedthough Erik did earn Purple Heart award class mates nicked forefinger drawing bit blood Now covering Should wings tails fuselages covered first Wings de creed chief instructor Mel covering material handed out Much discussion about color combinations ensued trades between students after lively con sultations designs felt suited him best provided fun Whoever can remember first attempt iron-on method covering models knows what students first covered wings looked like wrinided mess said Lars forged ahead own What can lamented students quite quality-con scious now blow-dryer heat gun supplied chief instructor Mel came rescue 15 minutes wing covering tight drum Lars happily received peers congratulations beautiful translucent red-and-green wing first teenagers wings finished built heard amazed parent eager fledglings proudly carried beautiful multicolored wings out carefully loaded Gliders waiting cars Seven wings covered quitting time Erik joined class late scrambling finish model decided stay after hours finish up structor Things really getting exciting now Radios ordered due last session Day 6 Mel old-timers smiled Lets land em weve got em really hooked now radios arrived Ever see eight RC systems colorful boxes nested side big box Naturally old-timer would want check out goods inside Futaba Conquest cartons before Sat urdays class Once sure worked class members called come pick up new systems get ac quainted charge up Saturdays class Day 7 arrived humming Right away though ran some hurdles first problem caused decision use Quik Link keepers between servos torque rods positioned servos Quik Links proved too high cabin interior Goldberg Gentle Ladys small fuse lage bumped against bottom wing So out Quik Links back plans students taught make Z-bend forward end music wire linked torque rod tail surface Daves Jeffs Kens Eriks radios fitted torque rods con nected rudders elevators four just about finished Matt Charles Lars Case gotten behind due going out town spring break tut tut Jeff Erik firstto discover next problem wont fit cried out almost simultaneously plans called square battery Futabas flat Uh oh young mens introduction common RC malady final assembly rework gave chance try out ingenuity Jeff solved problem stripping plastic covering battery re positioning batteries square bending lead-out wires re-wrap ping black tape obtained during lunch break Jeff wanted finish Erik figured way fit battery case special angle Others followed suit left switch harness hook installation hi-starting complete final assembly work Some Gliders readier others rapidly heading toward longawaited flight test Wed counted having pictures launchings Sunday supplement story Mike photographer showed up take outdoor photos finished near-finished models brought news story would appear next Monday no time arrange photo session official flight tests him grand finale would make papers after best-laid plans. old-timer heard grumble disappointment yesbut consolation story would out published Bulletin before Bend Aero Modelers mall show scheduled next weekend Giving students opportunity showing off Gentle Lady Gliders alongside RAM club members aircraft would make fitting end Learn Fly RC Airplanes class Flying would have await permission Bends fickle spring weather Travelers passing through central Oregon Bend reported have noticed looked skywards unusual flurry activity vicinity 27th Knott spring 1987 Beneath flock Gliders thermaling overhead some may have observed stood two figures necks craned eagerly upwards travelers come closer bent ear would have seen chief structor Mel smiling old-timer cohorts heard him pronounceWe landed em Now next school RC Soaring/Blakeslee Continued page 41 tackle learning task hopefully greater understanding knowledge chance success hook available Zenith Aviation Books see ad issue Wilshire Model Center $1595 word warning Id like pass along about book since written mainly British Soarers contains descriptions things dont have over hand-towing principal method launching Brit ain virtually unknown US Dave also describes BARCS British Association Radio Control Soarers rules competitions BARCS organizes Actually standard BARCS competition very interesting would worth try over First always fly man-on-mannot uniquebut fun part what call percentage slot objective fly longest eight- 10- 15-minute time period Continued page 133 September 1987 129 INTRODUCING ST D M VARIABLE SPEED THE NEW Ft rrIFI POWER CENTER 1 Variable Control Outlet Dremel & Brush Type Motor Tools 5 Outlets Handle Covering Irons Heat Guns & Soldering Tools etc 15 Amp Breaker W/Reset ted On/Off Switch Duty Power Cord H/Duty Steel Housing ting Tabs es May Vary USA Designed Engineered Modeler Serious Model BuiIdrs DEALER INQUIRIES ARE WELCOME WRITE OR CALL SEND MONEY ORDER OR CHECK TODAY NO CODs PLEASE SiI2Y* liNt tN1[tIIQIIDILIISI[S P 0 BOX 23492 MILWAUKEE WI 53223 354-8698 SPECIAL $3OO ntage & Handling WI Modelers MODEL #ABI-SKE add 5% tax RC Soaring/Blakeslee Continued page 129 everybody flight group ready blow horn start slot think air good launch hand-tow right away flight time starting release air doesnt look too good can wait until some body else launches see real cat-and-mouse game have ground horn blows end slot careful timing land ing required winner slot given 1000 points others slot given percentage 1000 points depending upon score landing points compared winners score BARCS competitions have several preliminary rounds top nine fliers go head-to-head flyoff determine winner Sounds exciting doesnt Reading books magazines other countries has advantage giving us some new interesting per spectives Progress Princeton Michael Selig wrote let everyone know about progress testing air foils low-speed wind tunnel Princeton University Michael listed names modelers making wing section models people have contributed time and/or money measurement systems said contributions have amounted almost $15000 body Michaels letter Since have such large number build ers will have some airfoils duplicated can examine effects model variability performance stage have orders out 12 models expect begin coming around same time will have system up running will split experimental program two phases first will measure lift drag previously mentioned airfoils Reynolds numbers 100000 200000 300000 results experiments will compared predictions Eppler Somers computer program design anal ysis low-speed airfoils recent ISES code two-dimensional viscous aero dynamic design analysis code developed Drela Giles MIT Eppler Somers code uses potential flow calculate inviscid velocity distributions Drag calculated using surface velocity dis tribution edge velocity integral boundary layer equations cannot account separation bubbles ISES code discretizes Euler equations describe outer inviscid flow couples boundary layer through displacement thickness Again integral boundary layer equa tion used closure models elab orate used Eppler Somers Fur thermore ISES code appears capture features separation bubbles therefore can account additional bubble drag preliminary work ISES code seems better lower Reynolds numbers Eppler Somers code second phase will design test least 10 new airfoils airfoils will de signed Eppler Somers code design mode comparisons between theory experiment first phase ex pect identify favorable features pressure distributions low-Reynolds-number airfoils should incorporated design new airfoils will screen newly designed air foil using ISES code predictions look promising will have built test wind tunnel way expect finish several good low-Reynolds-number airfoils RC Sailplanes effort raise funds additional equipment will make video entitled Low Reynolds Number Airfoil Testing Princeton University will describe basic aero dynamics airfoils low Reynolds numbers discuss detail particular facility per forming low-Reynolds-number airfoil measure ments VHS tape will roughly 40-minutes long available $25 donation amount $8 will go cost tape postage $17 will put toward equipment As final note though plan finish testing 30 airfoils end August ex periments will stop As long interest tests will continue way another PS think taking long time us answer letters youre probably right being swamped mail have questions about please write directly authors John Donovan & Michael Selig Dept Mech Aero Engi neering Engineering Quadrangle Princeton Uni versity Princeton NJ 085g winches John Wyss article F3B winches sparked considerable interest John Men ard Torrey Pines Club San Diego good enough write share findings building chib winches tested different types winches over four-year period including some $2000 F3B winches DGM motors monofilament line found must match drum size motor get best performance rebuilt Ford long-shaft motor found winch drum three-inch-diameter hub 6-in -diameter end plates 4 between end plates worked best drums must welded -in aluminum end plates testing blew up fabricated bolted together drum DGM motor new winches smooth strong launch almost well F3B winches much less cost have retired machinist named Ken Moore makes frames drums special turnarounds us builds five time because setup time turnaround fantastic included Kens $150 price has 2/2-in-diameter recessed pulley double ball bearings use two solenoids series because case gets stuck other will still open shut off power also use toggle safety switch case foot switch sticks have used same type wiring club winches over six years competition sport flying have runaway winch ball bear ing has machined fit end starter shaft however needle bearing very easy install some members winches have given great service just adding bearing alone parts use along prices Caner precision rebuilt Ford long-shaft starter #31 l5$30 Wells Mfg Co #F496 solenoids two wired series$12 Willys Electronic Sup ply safety switch #35-080 SPST on/off ISA 125 VAC$3 80 Foot switchSelectra Switch SS5 19$450 Selectras address PO Box 1585 Covina CA 91722 Needle bearing Torrington B1012$l87 Ball bearing 5/s-in shaft$3 25 Connectors$3l0 Cables$l 110 Aluminum drum frame turnaround$3059 Machining welding$ 150 sub-total$25021 Delco Dura Power 650 amp-hour battery$70 #15 #18 braided nylon linel 200 ft$ 10 total$33021 Thanks very much good information John anyone wants info suspect letter John SASE should trick Johns address 511 CalIe De Los Potros Bonita CA 92002 Confused about new frequencies new frequencies something RCers must know about understand Im going go column because much being written magazine Fred Marks George Myers others What want call attention September 1987 133 series four articles Flying Models magazine Bob Aberle Bob chairman AMAs Frequency Committee new fre quencies secured FCC articles June through September issues FM cover history frequency prob lems right through new equipment will required fly 20 kHz other 10 kHz commercial broadcasters different perspective always good think youll enjoy reading Bobs four articles Soartech #6 available Most Sailplaners have undoubtedly heard Soartech series jour nals edited published Herk Stokely Vir ginia Herk also writes Soaring column Flying Models magazine Herk puts out Soartech once twice year contains papers mainly technical nature appeal greatly scientists among us Once read can understand amount work Herk various authors put No 6 contains 154 pages includes Wind tunnel testing low-Reynolds-Number-airfoils Princeton University Michael Selig German/EnglishEnglish/German technical dic tionary RC Sailplane terminology Armin Saxer Optimization System RC Sail plane Armin Saxer Airfoil Families 12A 14A ISA RoIf Girsberger Equi librium Stability Load Tail David Fraser Friction Drag Pressure Drag Airfoils WH Phillips BASIC language program estimating weight RC Sailplanesbased Schlosser Max Cher noff New Developments plotting air foils home computers dot-matrix print ers k Anderson Pascal program automatic performance estimationbased VJIITAQE -C PLAN CONSOLIDATED PBY-5A CATALINA 9 FT WING SPAN ALL RIBS B PULL FORMtRS SHOWN ON PLANS1 PLASrIC ENGCOWLS sioBO PR CLEAR GUN BUSTERS $ 760 PR 4 LARGE PLAN SHEETS s $895 GET WING SPAN MODEL PBY-5A ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $ 550 PR ADD V 300 POSTAGE Saxer Simons programs Soartech No 2 Ed Karns Calculation Neutral Point Static Margin Ernie Currington Issue No 6 back issues available Herk very reasonable $5 per copy Herks address 1504 Horseshoe Circle Virginia Beach VA 23451 F3B news Did everyone notice three items important news Don Lowes Presidents Cor ner July issue AMA News maga zine First announced 1989 F3B World Championships would held countryprobably somewhere East Coast fact Soaring World Championships will just four World Championships will going same time other World Champs will Pattern Pylon Helicopter really excellent news because will give spectators chance see other model flying addition main interest other announcements F3B rules expected 1988 will proposal drop Speed task Dick Crowley April Plenary meeting said sup port dropping Speed task fairly unani mous appears nature F3B will change drastically below proposal West Germany eliminate Weak Link rule accepted Technical Committee majority still feel should some means limiting power imparted model during launch As yet nobody has able write rules winches would limit power also prevent people going megabuck exotic machinery Ground War call Europe Finally Builder Model rule dropped people flying com pletely finished Hans Muller planes little point claiming buildership just because installed radio F3B Speed task assume CLAM Plenary Session next April approves drop ping Speed task next question will affect F3B designs talking John Wyss about learned thinks designers will go larger planes higher-aspect-ratio wings aim will get higher launches windy weather improve L/D max imize number laps can flown four minutes allowed course Distance task Big planes have consider weak link John feels weak link actually pretty strong wont inhibit planes bit larger normal today next question will two-task F3B event attract competitors Rightly wrongly Speed task probably did scare off some beginners once fliers became accustomed F3B flying no fear task So elimination Speed will probably go down perception alteration rather real change way event flown As long talking about International Soaring Id like get something off chest Ive long thought about having International event Duration No Speed no Dis tance tasks elimination Speed will prob ably diminish demand Duration World Champs still think would have merit six-minute precision task now run F3B pretty much automatic considered task decent pilots dont lose points Duration-only event could use British percentage slot system would excit ing competitors spectators alike What Im really interested seeing what type ship would developed might much differ ent designs will seeing Duration/Distance event other hand might big polyhedral rudder/elevator plane New Wilshire catalog latest dated May 1987 Sailplane catalog available Wilshire Model Center Wilshire has established repu tation importing interesting Sailplanes around worldespecially Germany great blow owner Hans Weiss suddenly died about two years ago fortunately Mrs Maddy Weiss has kept shop going Im sure Hans would approve planes Wilshires current catalog too kits catalog list Id like name manufacturers have least plane represented Germany Air Jet successor Carrera Michael Beineke CHK Modell Eisman Mul tiplex kits radios accessories Graupner Robbe Rowing KDH Modellbau Great Britain Edmonds Micro Mold US Mark Grand Models Cheetah Models Bob Scaly Quality Fiberglass JM Glascraft Aeronautics Larry Hargraves Models Advanced Glider Concepts Sailplanes Santa Monica Magnum Hi Starts think partial lineup likely see local hobby store youre market kit moment Wilshire catalog lot fun just look over get familiar what available Sailplane-wise Send $250 Wilshire 2836 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 8289362 Elec tries another $250 will get Wilshires cat alog electric motors kits etc just full Sailplane catalog Computerized airfoil plotting design pro 134 Model Aviation IGITIOIIII TREKS PROFILEVCOMBATVRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UKIFLOW & STIIDD hum Dliii Ful Ingredients Fo detailed broclum50C stamps/check CAROLINA-TAFFINDER 8345 Delhi Road Dept North Charleston SC 29418 803-553-7169 CATALOGOVER 50 PLANS $00 DEALERS WRITE WORLDWIDE SID MORGAN 13157 ORMOND BELLE VILLE 4BIII USA youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 40, 41, 129, 133, 134, 135
Radio Control Soaring Byron Blakeslee editor added some confusion scheme things editorial comment about team funding inserted Byron Blakeslees June 1987 column comment worded such way readers might mistakenly believe contributions Team Fund could used defray expenses involved team member taking spouse World Champs Such NOT case Team Fund used help defray costs taking additional team-support person nel Champs help pay rental vehicles spouse accompanies team mem ber spouses expenses respon sibility team member RMcM CLUB month following write-up Clarence Sailplane Society comes club secretary Lyn Perry newsletter editor Roman Pasyz Roman also took pictures supplied information captions Clarence Sailplane Society AMAchartered club 1883 begun late 1982 founding father Ed Waters no fly him members drawn across Western New York including Buffalo surrounding towns members including Ed Clarence NY flying site series marvelous turf farms located Clarence hence name 54 us interesting guys however illustrious members include AMA 20 former AMA President John Grigg AMA 195 Ron Kirk beeyootiful work LJMP Pantera Prodigyjust won annual building contest Viking Playboy Electrics Cur rent club president Jim Sonnenmeier completing doctorate aerospace engineering State University New York Buffalo some members work local aerospace companies number several teachers among ranks run gamut ages high school students retirees often beat us younger folks fly anything evidenced club inventory everything 11-lb XCs two six Windsongs three flying three building Sailaire etc l0-oz Zephyrs Gnomes like last count 23 Gentle Ladies being flown result one-design contest held 1985 weve taken few steps Electric 10 us have Electrics planning first fun-fly summer Since founding weve developed active contest calendar frequently attend events Rochester NY well Canada proud est 1985 Carl Goldberg Memorial Gentle Lady contest generated $300 medical research 1986 host ing two-day LSF Northeastern Regionals attracted over 30 fliers Parenthetically six us have achieved LSF Level III status hard work Level IV Thanks chance brag bit its wonder ful hobby intend continue having fun flying forever new Gilding book titled Radio Controlled Glid ing Dave Jones has recently come us Britain aimed beginners intermediates both Thermal Slope flying Dave editor 40 Model Aviation Roman aryz Sagitta XC-Pius has seversi mods standard kit thicker fuliy sheeted main wing panels duel-blade wing joiners thicker horizontal tail 3-In fuselage stretch Sin thetail Unballasted weight 10 ib 11 oz uses ROG takeoffs Plane has fastest Speed run clubs modified F3B contest Paryz photo Dave Jones new Soaring book aimed beginners info coiumn John Wyss poseawith the86 version P3B design Virga NoteClarence Sailplane Societys annual covering contest siways has piastic-pipe cradle keep plane out harms waygood turnout club has 6 winter meetings yearly Paryz plc FormerAMA PresidentJohn Griga launches LIMP Meteor Clarence Soaring Societys ciub fieid Paryz photo Thermal Soaring column British magazine Radio Control Models Electronics Slope parts book written Keith Thomas formerly wrote Slope Soar ing column same magazine Ive read entire book Id recommend highly getting started great rapidly grow ing hobby/sport Rather describing about think would illuminating quote Daves introduction great source sadness to see keen beginner become disillusioned dis gruntled refugee Soaring simply because has made elementary mistakes hoped book will dispel mists inex perience jargon misfortune heartbreaks surround learning fly model Sailplanes ways book wished able read first few years Soaring aim book provide infor mation advice necessary beginner Soaring able become competent sport flier other words aimed pilots knowledge skill range raw beginners sort expertise expected competent sport flier things firsthand experience can teach book will allow rise armchair immediately successful However will allow Continued page 129 Dave Thompson builtthiswinch frame K-Mart hand truck Wheeis removed during launches battery charger buiit heavy-duty emergency knife switch came RV shop [E IX] ID FA U J 1U - W.hc~ iSeakd Ttcoe-SaoI t$cfoocdUoOcdeJq - Designed Basic Macta Flying Medal Following Bout-Up Prototype Practice Wood ond Fobic p...If RalIico Roiloinr-o Uco ThorccShecddoi Yoo r$j~M y Howl Historically Presented 4 Jenny 537 81 OH Mocqoito tb $42 57Pt$39 108 OH MocqoBoecic $55 ne-Roe$52 98 Scror PTl7Koydet $56 60 Scyornrerin S68 $2471 Sect DC3 C471 Pore toon $32 99 NtIIc Wideec P61 $69 SkyCe 0Doehttlnc$48- 72 CenOSUl /4 L&S $44 O5 nocoope Spoct $36- lOt Ce 0361/4 L&S $56 loll Spn toildog $43r 60 Sooglec M2 Moil $24 107 Aenenco C3 Opt $35 68 tictel tclldeg Pt $30 42 Hoccend tece Ike $45 59 treentoce McLA 554 . 78 Some WW $35 107 Gecro tcenct Ftp $54ffiro 63 Ce Gechk PliC $42 69 Lindbegc NO211 $28 94 Cc Cechk Ft C $54 91 Liodbnrgc NO511 $39 eter Cornet fec $24 96 WeNWiNoc Roc 62 teerMMclligen $35 74 C Helldcn St2C4 $55 94 HccnMrldclligoe $45 155 Po,clrPS19 Tr $59 63 teeing P-26A Pt $36 60 Woce Taper-Wing $36 84 teeing P26A Pt $48 90 Wece TepcnWieg $48 69 Wece C6 Cobb$36 75 Wecrl 4 Lyconda $32 44 Bench C17-t Slog $38 100 Woct 4 Lyceede $49 * O6tencb C17-t Slog $49 S7PedT o 4AT $36 j 55 Leck 11 Elactro 830 76 Perd Tenet 4AT $48 82 Lock 11 Electre 845 1 l4Pedrjnrtn4AT$65 Strecen T/W 087 $18 96 telloece Airencie $40 81 Strnceo 0/W Sty $36 93 Lonning C2Acpb $49 132 Stirreen T/W St7 $38 58 Onon J3P Sock $39 Sttnctel Pt P38- 5311 ltGnonr J3P Occic $56 118 tnrctol Pt P208 $45 134 Lock Al topcc $484 Tcrnnne Pecco 845 63 Lock Al Eepnecc$24 56Con Werlnk P45 $34 83 Lock Sc trace $36 60 Vogt Concoin P411 $3577WWrnc 131 tndL $48 80 VogI Concoin P48 $6963 C Onolroock P7C1 $45 *78 Lock Light5 P38 83894 C Snolocelc P7C1 $5756 tepSee-Bne Are $34 108 Siko 038 Anrpfr $49 74 tnpSno$ae Arc $39 60 toning 160 Spent $36.- 7g Pipe J3 Cob$29 90 toeing tog Sport $49 156 Piper 33 Cob$39- 75 Nennhop Goocoro $48 9$ Lock Hodeen tork $38 96 N 63 Gron P6P Hellcat $28 90 0 77 toning 817G Font $35 60S 103 toe 0170 Pent $55 190 68 Wectl Whiniceind $32 78 C 48 N Acre Neele 839 104 6g ttononao VToil $39 65 M 77 Loccoerbe Sedon 825 97 M 72 NA 825 $onrbe $49 65 C 65 MMoocdnn 826 849 94 C Sold Thro Snob, Pice Ocer 1400 Morn SOc Up 612 Add 10% oil oder chipping & cc. ntcte Con & Mee Slcnnhenr Ic 15% 25% ci f0~Jc Pictoriol cotolog $200 linclodec Pnicn Lien Pnice lid encconolonn5loO ltkyerrtorergn odd$108 CLEVELAND MODEL&SUPPLY cOoO0 t eoccceocnrotretc 1 Ncr tereric circod tin rc baccce t03$7t DtTtOtT AVE CLEVELAND OHIO 44182 joinner ocearco oarcnc PeoncreS IS PMSST 1OrDST112161961 3000 locoeccocOeccer DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 SPECIAL PRO SERIES PITCH 3 4 28 3 3* 4a Sn 6 3 3&3/4a 4 5 6 8 4 5 6 6*n 7 4 5 6 6* 7 7* 45 6 6W 6* 7 8W 6EW 4 6 7 7* 7*a 7&3/4 8 6EW0 6 7 4W 5 5W 6 5 6 5 6 5 6 6 Tn 8 FOUR-CYCLE TAILORED HELICAL PITCH 1266* 7 7* 8 13677*8 146 7 7*8 1567 16678 PYLON RACING 75N 5*N*279 8&3/46* 6&3/4 7 7* 7&3/4*289 97 7* 7&3/4$289 W Wtde blade EW Extra wide N Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX PRICE $149 *179 *189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 September 1987 41 OUR INVENTORY AVERAGES OVER 8000 PROPS! Air e Land r FOR RADIO CONTROL CRYSTALS RELY ON JAN FOR 3-WAY HELP 1 TECHNICALLY CORRECT Reliable frequency control 2 QUICK TURNAROUND huge inventory prompt service Emergency Order Plan LOW PRICES QUARTZ CRYSTALS FOR Two-Way stry ne Amateurs Microprocessor Scanners yists FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 ViSA11 ILW CALL 1-800-237-3063 FREE except Florida CLOSED FRIDAYS WHY DO I 0 C 0 r- 0 N Soarings Finest FLY DODGSON DESIGNS GLIDERS Ask 30 Windsong flyers 1986 NW Soaring Season Championship contest Ask 25 Camano Windsong flyers 1987 Western Soaring Championships Modesto CA Wherever great soaring being done Dodgson design gliders doing better Pictured Shawn Lenci Escalon CA some 1986 trophies won Dodgson Designs Gliders flying open class bad kid Send 2 stamps catalog WIN OSONG CAMANO 2Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify BETA 8mm format VISA & MASTER CHARGE Oko 15995Pixy 14995Ply P1 7500 DODGSON DESIGNS 0 DAMSON ROAD BOTHELL WA 980211 haps hardest part younger mod elers carving balsa nose cones shape gang new razor-andsharp-knife carving scene fortunately no fingers slicedthough Erik did earn Purple Heart award class mates nicked forefinger drawing bit blood Now covering Should wings tails fuselages covered first Wings de creed chief instructor Mel covering material handed out Much discussion about color combinations ensued trades between students after lively con sultations designs felt suited him best provided fun Whoever can remember first attempt iron-on method covering models knows what students first covered wings looked like wrinided mess said Lars forged ahead own What can lamented students quite quality-con scious now blow-dryer heat gun supplied chief instructor Mel came rescue 15 minutes wing covering tight drum Lars happily received peers congratulations beautiful translucent red-and-green wing first teenagers wings finished built heard amazed parent eager fledglings proudly carried beautiful multicolored wings out carefully loaded Gliders waiting cars Seven wings covered quitting time Erik joined class late scrambling finish model decided stay after hours finish up structor Things really getting exciting now Radios ordered due last session Day 6 Mel old-timers smiled Lets land em weve got em really hooked now radios arrived Ever see eight RC systems colorful boxes nested side big box Naturally old-timer would want check out goods inside Futaba Conquest cartons before Sat urdays class Once sure worked class members called come pick up new systems get ac quainted charge up Saturdays class Day 7 arrived humming Right away though ran some hurdles first problem caused decision use Quik Link keepers between servos torque rods positioned servos Quik Links proved too high cabin interior Goldberg Gentle Ladys small fuse lage bumped against bottom wing So out Quik Links back plans students taught make Z-bend forward end music wire linked torque rod tail surface Daves Jeffs Kens Eriks radios fitted torque rods con nected rudders elevators four just about finished Matt Charles Lars Case gotten behind due going out town spring break tut tut Jeff Erik firstto discover next problem wont fit cried out almost simultaneously plans called square battery Futabas flat Uh oh young mens introduction common RC malady final assembly rework gave chance try out ingenuity Jeff solved problem stripping plastic covering battery re positioning batteries square bending lead-out wires re-wrap ping black tape obtained during lunch break Jeff wanted finish Erik figured way fit battery case special angle Others followed suit left switch harness hook installation hi-starting complete final assembly work Some Gliders readier others rapidly heading toward longawaited flight test Wed counted having pictures launchings Sunday supplement story Mike photographer showed up take outdoor photos finished near-finished models brought news story would appear next Monday no time arrange photo session official flight tests him grand finale would make papers after best-laid plans. old-timer heard grumble disappointment yesbut consolation story would out published Bulletin before Bend Aero Modelers mall show scheduled next weekend Giving students opportunity showing off Gentle Lady Gliders alongside RAM club members aircraft would make fitting end Learn Fly RC Airplanes class Flying would have await permission Bends fickle spring weather Travelers passing through central Oregon Bend reported have noticed looked skywards unusual flurry activity vicinity 27th Knott spring 1987 Beneath flock Gliders thermaling overhead some may have observed stood two figures necks craned eagerly upwards travelers come closer bent ear would have seen chief structor Mel smiling old-timer cohorts heard him pronounceWe landed em Now next school RC Soaring/Blakeslee Continued page 41 tackle learning task hopefully greater understanding knowledge chance success hook available Zenith Aviation Books see ad issue Wilshire Model Center $1595 word warning Id like pass along about book since written mainly British Soarers contains descriptions things dont have over hand-towing principal method launching Brit ain virtually unknown US Dave also describes BARCS British Association Radio Control Soarers rules competitions BARCS organizes Actually standard BARCS competition very interesting would worth try over First always fly man-on-mannot uniquebut fun part what call percentage slot objective fly longest eight- 10- 15-minute time period Continued page 133 September 1987 129 INTRODUCING ST D M VARIABLE SPEED THE NEW Ft rrIFI POWER CENTER 1 Variable Control Outlet Dremel & Brush Type Motor Tools 5 Outlets Handle Covering Irons Heat Guns & Soldering Tools etc 15 Amp Breaker W/Reset ted On/Off Switch Duty Power Cord H/Duty Steel Housing ting Tabs es May Vary USA Designed Engineered Modeler Serious Model BuiIdrs DEALER INQUIRIES ARE WELCOME WRITE OR CALL SEND MONEY ORDER OR CHECK TODAY NO CODs PLEASE SiI2Y* liNt tN1[tIIQIIDILIISI[S P 0 BOX 23492 MILWAUKEE WI 53223 354-8698 SPECIAL $3OO ntage & Handling WI Modelers MODEL #ABI-SKE add 5% tax RC Soaring/Blakeslee Continued page 129 everybody flight group ready blow horn start slot think air good launch hand-tow right away flight time starting release air doesnt look too good can wait until some body else launches see real cat-and-mouse game have ground horn blows end slot careful timing land ing required winner slot given 1000 points others slot given percentage 1000 points depending upon score landing points compared winners score BARCS competitions have several preliminary rounds top nine fliers go head-to-head flyoff determine winner Sounds exciting doesnt Reading books magazines other countries has advantage giving us some new interesting per spectives Progress Princeton Michael Selig wrote let everyone know about progress testing air foils low-speed wind tunnel Princeton University Michael listed names modelers making wing section models people have contributed time and/or money measurement systems said contributions have amounted almost $15000 body Michaels letter Since have such large number build ers will have some airfoils duplicated can examine effects model variability performance stage have orders out 12 models expect begin coming around same time will have system up running will split experimental program two phases first will measure lift drag previously mentioned airfoils Reynolds numbers 100000 200000 300000 results experiments will compared predictions Eppler Somers computer program design anal ysis low-speed airfoils recent ISES code two-dimensional viscous aero dynamic design analysis code developed Drela Giles MIT Eppler Somers code uses potential flow calculate inviscid velocity distributions Drag calculated using surface velocity dis tribution edge velocity integral boundary layer equations cannot account separation bubbles ISES code discretizes Euler equations describe outer inviscid flow couples boundary layer through displacement thickness Again integral boundary layer equa tion used closure models elab orate used Eppler Somers Fur thermore ISES code appears capture features separation bubbles therefore can account additional bubble drag preliminary work ISES code seems better lower Reynolds numbers Eppler Somers code second phase will design test least 10 new airfoils airfoils will de signed Eppler Somers code design mode comparisons between theory experiment first phase ex pect identify favorable features pressure distributions low-Reynolds-number airfoils should incorporated design new airfoils will screen newly designed air foil using ISES code predictions look promising will have built test wind tunnel way expect finish several good low-Reynolds-number airfoils RC Sailplanes effort raise funds additional equipment will make video entitled Low Reynolds Number Airfoil Testing Princeton University will describe basic aero dynamics airfoils low Reynolds numbers discuss detail particular facility per forming low-Reynolds-number airfoil measure ments VHS tape will roughly 40-minutes long available $25 donation amount $8 will go cost tape postage $17 will put toward equipment As final note though plan finish testing 30 airfoils end August ex periments will stop As long interest tests will continue way another PS think taking long time us answer letters youre probably right being swamped mail have questions about please write directly authors John Donovan & Michael Selig Dept Mech Aero Engi neering Engineering Quadrangle Princeton Uni versity Princeton NJ 085g winches John Wyss article F3B winches sparked considerable interest John Men ard Torrey Pines Club San Diego good enough write share findings building chib winches tested different types winches over four-year period including some $2000 F3B winches DGM motors monofilament line found must match drum size motor get best performance rebuilt Ford long-shaft motor found winch drum three-inch-diameter hub 6-in -diameter end plates 4 between end plates worked best drums must welded -in aluminum end plates testing blew up fabricated bolted together drum DGM motor new winches smooth strong launch almost well F3B winches much less cost have retired machinist named Ken Moore makes frames drums special turnarounds us builds five time because setup time turnaround fantastic included Kens $150 price has 2/2-in-diameter recessed pulley double ball bearings use two solenoids series because case gets stuck other will still open shut off power also use toggle safety switch case foot switch sticks have used same type wiring club winches over six years competition sport flying have runaway winch ball bear ing has machined fit end starter shaft however needle bearing very easy install some members winches have given great service just adding bearing alone parts use along prices Caner precision rebuilt Ford long-shaft starter #31 l5$30 Wells Mfg Co #F496 solenoids two wired series$12 Willys Electronic Sup ply safety switch #35-080 SPST on/off ISA 125 VAC$3 80 Foot switchSelectra Switch SS5 19$450 Selectras address PO Box 1585 Covina CA 91722 Needle bearing Torrington B1012$l87 Ball bearing 5/s-in shaft$3 25 Connectors$3l0 Cables$l 110 Aluminum drum frame turnaround$3059 Machining welding$ 150 sub-total$25021 Delco Dura Power 650 amp-hour battery$70 #15 #18 braided nylon linel 200 ft$ 10 total$33021 Thanks very much good information John anyone wants info suspect letter John SASE should trick Johns address 511 CalIe De Los Potros Bonita CA 92002 Confused about new frequencies new frequencies something RCers must know about understand Im going go column because much being written magazine Fred Marks George Myers others What want call attention September 1987 133 series four articles Flying Models magazine Bob Aberle Bob chairman AMAs Frequency Committee new fre quencies secured FCC articles June through September issues FM cover history frequency prob lems right through new equipment will required fly 20 kHz other 10 kHz commercial broadcasters different perspective always good think youll enjoy reading Bobs four articles Soartech #6 available Most Sailplaners have undoubtedly heard Soartech series jour nals edited published Herk Stokely Vir ginia Herk also writes Soaring column Flying Models magazine Herk puts out Soartech once twice year contains papers mainly technical nature appeal greatly scientists among us Once read can understand amount work Herk various authors put No 6 contains 154 pages includes Wind tunnel testing low-Reynolds-Number-airfoils Princeton University Michael Selig German/EnglishEnglish/German technical dic tionary RC Sailplane terminology Armin Saxer Optimization System RC Sail plane Armin Saxer Airfoil Families 12A 14A ISA RoIf Girsberger Equi librium Stability Load Tail David Fraser Friction Drag Pressure Drag Airfoils WH Phillips BASIC language program estimating weight RC Sailplanesbased Schlosser Max Cher noff New Developments plotting air foils home computers dot-matrix print ers k Anderson Pascal program automatic performance estimationbased VJIITAQE -C PLAN CONSOLIDATED PBY-5A CATALINA 9 FT WING SPAN ALL RIBS B PULL FORMtRS SHOWN ON PLANS1 PLASrIC ENGCOWLS sioBO PR CLEAR GUN BUSTERS $ 760 PR 4 LARGE PLAN SHEETS s $895 GET WING SPAN MODEL PBY-5A ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $ 550 PR ADD V 300 POSTAGE Saxer Simons programs Soartech No 2 Ed Karns Calculation Neutral Point Static Margin Ernie Currington Issue No 6 back issues available Herk very reasonable $5 per copy Herks address 1504 Horseshoe Circle Virginia Beach VA 23451 F3B news Did everyone notice three items important news Don Lowes Presidents Cor ner July issue AMA News maga zine First announced 1989 F3B World Championships would held countryprobably somewhere East Coast fact Soaring World Championships will just four World Championships will going same time other World Champs will Pattern Pylon Helicopter really excellent news because will give spectators chance see other model flying addition main interest other announcements F3B rules expected 1988 will proposal drop Speed task Dick Crowley April Plenary meeting said sup port dropping Speed task fairly unani mous appears nature F3B will change drastically below proposal West Germany eliminate Weak Link rule accepted Technical Committee majority still feel should some means limiting power imparted model during launch As yet nobody has able write rules winches would limit power also prevent people going megabuck exotic machinery Ground War call Europe Finally Builder Model rule dropped people flying com pletely finished Hans Muller planes little point claiming buildership just because installed radio F3B Speed task assume CLAM Plenary Session next April approves drop ping Speed task next question will affect F3B designs talking John Wyss about learned thinks designers will go larger planes higher-aspect-ratio wings aim will get higher launches windy weather improve L/D max imize number laps can flown four minutes allowed course Distance task Big planes have consider weak link John feels weak link actually pretty strong wont inhibit planes bit larger normal today next question will two-task F3B event attract competitors Rightly wrongly Speed task probably did scare off some beginners once fliers became accustomed F3B flying no fear task So elimination Speed will probably go down perception alteration rather real change way event flown As long talking about International Soaring Id like get something off chest Ive long thought about having International event Duration No Speed no Dis tance tasks elimination Speed will prob ably diminish demand Duration World Champs still think would have merit six-minute precision task now run F3B pretty much automatic considered task decent pilots dont lose points Duration-only event could use British percentage slot system would excit ing competitors spectators alike What Im really interested seeing what type ship would developed might much differ ent designs will seeing Duration/Distance event other hand might big polyhedral rudder/elevator plane New Wilshire catalog latest dated May 1987 Sailplane catalog available Wilshire Model Center Wilshire has established repu tation importing interesting Sailplanes around worldespecially Germany great blow owner Hans Weiss suddenly died about two years ago fortunately Mrs Maddy Weiss has kept shop going Im sure Hans would approve planes Wilshires current catalog too kits catalog list Id like name manufacturers have least plane represented Germany Air Jet successor Carrera Michael Beineke CHK Modell Eisman Mul tiplex kits radios accessories Graupner Robbe Rowing KDH Modellbau Great Britain Edmonds Micro Mold US Mark Grand Models Cheetah Models Bob Scaly Quality Fiberglass JM Glascraft Aeronautics Larry Hargraves Models Advanced Glider Concepts Sailplanes Santa Monica Magnum Hi Starts think partial lineup likely see local hobby store youre market kit moment Wilshire catalog lot fun just look over get familiar what available Sailplane-wise Send $250 Wilshire 2836 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 8289362 Elec tries another $250 will get Wilshires cat alog electric motors kits etc just full Sailplane catalog Computerized airfoil plotting design pro 134 Model Aviation IGITIOIIII TREKS PROFILEVCOMBATVRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UKIFLOW & STIIDD hum Dliii Ful Ingredients Fo detailed broclum50C stamps/check CAROLINA-TAFFINDER 8345 Delhi Road Dept North Charleston SC 29418 803-553-7169 CATALOGOVER 50 PLANS $00 DEALERS WRITE WORLDWIDE SID MORGAN 13157 ORMOND BELLE VILLE 4BIII USA youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 40, 41, 129, 133, 134, 135
Radio Control Soaring Byron Blakeslee editor added some confusion scheme things editorial comment about team funding inserted Byron Blakeslees June 1987 column comment worded such way readers might mistakenly believe contributions Team Fund could used defray expenses involved team member taking spouse World Champs Such NOT case Team Fund used help defray costs taking additional team-support person nel Champs help pay rental vehicles spouse accompanies team mem ber spouses expenses respon sibility team member RMcM CLUB month following write-up Clarence Sailplane Society comes club secretary Lyn Perry newsletter editor Roman Pasyz Roman also took pictures supplied information captions Clarence Sailplane Society AMAchartered club 1883 begun late 1982 founding father Ed Waters no fly him members drawn across Western New York including Buffalo surrounding towns members including Ed Clarence NY flying site series marvelous turf farms located Clarence hence name 54 us interesting guys however illustrious members include AMA 20 former AMA President John Grigg AMA 195 Ron Kirk beeyootiful work LJMP Pantera Prodigyjust won annual building contest Viking Playboy Electrics Cur rent club president Jim Sonnenmeier completing doctorate aerospace engineering State University New York Buffalo some members work local aerospace companies number several teachers among ranks run gamut ages high school students retirees often beat us younger folks fly anything evidenced club inventory everything 11-lb XCs two six Windsongs three flying three building Sailaire etc l0-oz Zephyrs Gnomes like last count 23 Gentle Ladies being flown result one-design contest held 1985 weve taken few steps Electric 10 us have Electrics planning first fun-fly summer Since founding weve developed active contest calendar frequently attend events Rochester NY well Canada proud est 1985 Carl Goldberg Memorial Gentle Lady contest generated $300 medical research 1986 host ing two-day LSF Northeastern Regionals attracted over 30 fliers Parenthetically six us have achieved LSF Level III status hard work Level IV Thanks chance brag bit its wonder ful hobby intend continue having fun flying forever new Gilding book titled Radio Controlled Glid ing Dave Jones has recently come us Britain aimed beginners intermediates both Thermal Slope flying Dave editor 40 Model Aviation Roman aryz Sagitta XC-Pius has seversi mods standard kit thicker fuliy sheeted main wing panels duel-blade wing joiners thicker horizontal tail 3-In fuselage stretch Sin thetail Unballasted weight 10 ib 11 oz uses ROG takeoffs Plane has fastest Speed run clubs modified F3B contest Paryz photo Dave Jones new Soaring book aimed beginners info coiumn John Wyss poseawith the86 version P3B design Virga NoteClarence Sailplane Societys annual covering contest siways has piastic-pipe cradle keep plane out harms waygood turnout club has 6 winter meetings yearly Paryz plc FormerAMA PresidentJohn Griga launches LIMP Meteor Clarence Soaring Societys ciub fieid Paryz photo Thermal Soaring column British magazine Radio Control Models Electronics Slope parts book written Keith Thomas formerly wrote Slope Soar ing column same magazine Ive read entire book Id recommend highly getting started great rapidly grow ing hobby/sport Rather describing about think would illuminating quote Daves introduction great source sadness to see keen beginner become disillusioned dis gruntled refugee Soaring simply because has made elementary mistakes hoped book will dispel mists inex perience jargon misfortune heartbreaks surround learning fly model Sailplanes ways book wished able read first few years Soaring aim book provide infor mation advice necessary beginner Soaring able become competent sport flier other words aimed pilots knowledge skill range raw beginners sort expertise expected competent sport flier things firsthand experience can teach book will allow rise armchair immediately successful However will allow Continued page 129 Dave Thompson builtthiswinch frame K-Mart hand truck Wheeis removed during launches battery charger buiit heavy-duty emergency knife switch came RV shop [E IX] ID FA U J 1U - W.hc~ iSeakd Ttcoe-SaoI t$cfoocdUoOcdeJq - Designed Basic Macta Flying Medal Following Bout-Up Prototype Practice Wood ond Fobic p...If RalIico Roiloinr-o Uco ThorccShecddoi Yoo r$j~M y Howl Historically Presented 4 Jenny 537 81 OH Mocqoito tb $42 57Pt$39 108 OH MocqoBoecic $55 ne-Roe$52 98 Scror PTl7Koydet $56 60 Scyornrerin S68 $2471 Sect DC3 C471 Pore toon $32 99 NtIIc Wideec P61 $69 SkyCe 0Doehttlnc$48- 72 CenOSUl /4 L&S $44 O5 nocoope Spoct $36- lOt Ce 0361/4 L&S $56 loll Spn toildog $43r 60 Sooglec M2 Moil $24 107 Aenenco C3 Opt $35 68 tictel tclldeg Pt $30 42 Hoccend tece Ike $45 59 treentoce McLA 554 . 78 Some WW $35 107 Gecro tcenct Ftp $54ffiro 63 Ce Gechk PliC $42 69 Lindbegc NO211 $28 94 Cc Cechk Ft C $54 91 Liodbnrgc NO511 $39 eter Cornet fec $24 96 WeNWiNoc Roc 62 teerMMclligen $35 74 C Helldcn St2C4 $55 94 HccnMrldclligoe $45 155 Po,clrPS19 Tr $59 63 teeing P-26A Pt $36 60 Woce Taper-Wing $36 84 teeing P26A Pt $48 90 Wece TepcnWieg $48 69 Wece C6 Cobb$36 75 Wecrl 4 Lyconda $32 44 Bench C17-t Slog $38 100 Woct 4 Lyceede $49 * O6tencb C17-t Slog $49 S7PedT o 4AT $36 j 55 Leck 11 Elactro 830 76 Perd Tenet 4AT $48 82 Lock 11 Electre 845 1 l4Pedrjnrtn4AT$65 Strecen T/W 087 $18 96 telloece Airencie $40 81 Strnceo 0/W Sty $36 93 Lonning C2Acpb $49 132 Stirreen T/W St7 $38 58 Onon J3P Sock $39 Sttnctel Pt P38- 5311 ltGnonr J3P Occic $56 118 tnrctol Pt P208 $45 134 Lock Al topcc $484 Tcrnnne Pecco 845 63 Lock Al Eepnecc$24 56Con Werlnk P45 $34 83 Lock Sc trace $36 60 Vogt Concoin P411 $3577WWrnc 131 tndL $48 80 VogI Concoin P48 $6963 C Onolroock P7C1 $45 *78 Lock Light5 P38 83894 C Snolocelc P7C1 $5756 tepSee-Bne Are $34 108 Siko 038 Anrpfr $49 74 tnpSno$ae Arc $39 60 toning 160 Spent $36.- 7g Pipe J3 Cob$29 90 toeing tog Sport $49 156 Piper 33 Cob$39- 75 Nennhop Goocoro $48 9$ Lock Hodeen tork $38 96 N 63 Gron P6P Hellcat $28 90 0 77 toning 817G Font $35 60S 103 toe 0170 Pent $55 190 68 Wectl Whiniceind $32 78 C 48 N Acre Neele 839 104 6g ttononao VToil $39 65 M 77 Loccoerbe Sedon 825 97 M 72 NA 825 $onrbe $49 65 C 65 MMoocdnn 826 849 94 C Sold Thro Snob, Pice Ocer 1400 Morn SOc Up 612 Add 10% oil oder chipping & cc. ntcte Con & Mee Slcnnhenr Ic 15% 25% ci f0~Jc Pictoriol cotolog $200 linclodec Pnicn Lien Pnice lid encconolonn5loO ltkyerrtorergn odd$108 CLEVELAND MODEL&SUPPLY cOoO0 t eoccceocnrotretc 1 Ncr tereric circod tin rc baccce t03$7t DtTtOtT AVE CLEVELAND OHIO 44182 joinner ocearco oarcnc PeoncreS IS PMSST 1OrDST112161961 3000 locoeccocOeccer DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 SPECIAL PRO SERIES PITCH 3 4 28 3 3* 4a Sn 6 3 3&3/4a 4 5 6 8 4 5 6 6*n 7 4 5 6 6* 7 7* 45 6 6W 6* 7 8W 6EW 4 6 7 7* 7*a 7&3/4 8 6EW0 6 7 4W 5 5W 6 5 6 5 6 5 6 6 Tn 8 FOUR-CYCLE TAILORED HELICAL PITCH 1266* 7 7* 8 13677*8 146 7 7*8 1567 16678 PYLON RACING 75N 5*N*279 8&3/46* 6&3/4 7 7* 7&3/4*289 97 7* 7&3/4$289 W Wtde blade EW Extra wide N Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX PRICE $149 *179 *189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 September 1987 41 OUR INVENTORY AVERAGES OVER 8000 PROPS! Air e Land r FOR RADIO CONTROL CRYSTALS RELY ON JAN FOR 3-WAY HELP 1 TECHNICALLY CORRECT Reliable frequency control 2 QUICK TURNAROUND huge inventory prompt service Emergency Order Plan LOW PRICES QUARTZ CRYSTALS FOR Two-Way stry ne Amateurs Microprocessor Scanners yists FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 ViSA11 ILW CALL 1-800-237-3063 FREE except Florida CLOSED FRIDAYS WHY DO I 0 C 0 r- 0 N Soarings Finest FLY DODGSON DESIGNS GLIDERS Ask 30 Windsong flyers 1986 NW Soaring Season Championship contest Ask 25 Camano Windsong flyers 1987 Western Soaring Championships Modesto CA Wherever great soaring being done Dodgson design gliders doing better Pictured Shawn Lenci Escalon CA some 1986 trophies won Dodgson Designs Gliders flying open class bad kid Send 2 stamps catalog WIN OSONG CAMANO 2Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify BETA 8mm format VISA & MASTER CHARGE Oko 15995Pixy 14995Ply P1 7500 DODGSON DESIGNS 0 DAMSON ROAD BOTHELL WA 980211 haps hardest part younger mod elers carving balsa nose cones shape gang new razor-andsharp-knife carving scene fortunately no fingers slicedthough Erik did earn Purple Heart award class mates nicked forefinger drawing bit blood Now covering Should wings tails fuselages covered first Wings de creed chief instructor Mel covering material handed out Much discussion about color combinations ensued trades between students after lively con sultations designs felt suited him best provided fun Whoever can remember first attempt iron-on method covering models knows what students first covered wings looked like wrinided mess said Lars forged ahead own What can lamented students quite quality-con scious now blow-dryer heat gun supplied chief instructor Mel came rescue 15 minutes wing covering tight drum Lars happily received peers congratulations beautiful translucent red-and-green wing first teenagers wings finished built heard amazed parent eager fledglings proudly carried beautiful multicolored wings out carefully loaded Gliders waiting cars Seven wings covered quitting time Erik joined class late scrambling finish model decided stay after hours finish up structor Things really getting exciting now Radios ordered due last session Day 6 Mel old-timers smiled Lets land em weve got em really hooked now radios arrived Ever see eight RC systems colorful boxes nested side big box Naturally old-timer would want check out goods inside Futaba Conquest cartons before Sat urdays class Once sure worked class members called come pick up new systems get ac quainted charge up Saturdays class Day 7 arrived humming Right away though ran some hurdles first problem caused decision use Quik Link keepers between servos torque rods positioned servos Quik Links proved too high cabin interior Goldberg Gentle Ladys small fuse lage bumped against bottom wing So out Quik Links back plans students taught make Z-bend forward end music wire linked torque rod tail surface Daves Jeffs Kens Eriks radios fitted torque rods con nected rudders elevators four just about finished Matt Charles Lars Case gotten behind due going out town spring break tut tut Jeff Erik firstto discover next problem wont fit cried out almost simultaneously plans called square battery Futabas flat Uh oh young mens introduction common RC malady final assembly rework gave chance try out ingenuity Jeff solved problem stripping plastic covering battery re positioning batteries square bending lead-out wires re-wrap ping black tape obtained during lunch break Jeff wanted finish Erik figured way fit battery case special angle Others followed suit left switch harness hook installation hi-starting complete final assembly work Some Gliders readier others rapidly heading toward longawaited flight test Wed counted having pictures launchings Sunday supplement story Mike photographer showed up take outdoor photos finished near-finished models brought news story would appear next Monday no time arrange photo session official flight tests him grand finale would make papers after best-laid plans. old-timer heard grumble disappointment yesbut consolation story would out published Bulletin before Bend Aero Modelers mall show scheduled next weekend Giving students opportunity showing off Gentle Lady Gliders alongside RAM club members aircraft would make fitting end Learn Fly RC Airplanes class Flying would have await permission Bends fickle spring weather Travelers passing through central Oregon Bend reported have noticed looked skywards unusual flurry activity vicinity 27th Knott spring 1987 Beneath flock Gliders thermaling overhead some may have observed stood two figures necks craned eagerly upwards travelers come closer bent ear would have seen chief structor Mel smiling old-timer cohorts heard him pronounceWe landed em Now next school RC Soaring/Blakeslee Continued page 41 tackle learning task hopefully greater understanding knowledge chance success hook available Zenith Aviation Books see ad issue Wilshire Model Center $1595 word warning Id like pass along about book since written mainly British Soarers contains descriptions things dont have over hand-towing principal method launching Brit ain virtually unknown US Dave also describes BARCS British Association Radio Control Soarers rules competitions BARCS organizes Actually standard BARCS competition very interesting would worth try over First always fly man-on-mannot uniquebut fun part what call percentage slot objective fly longest eight- 10- 15-minute time period Continued page 133 September 1987 129 INTRODUCING ST D M VARIABLE SPEED THE NEW Ft rrIFI POWER CENTER 1 Variable Control Outlet Dremel & Brush Type Motor Tools 5 Outlets Handle Covering Irons Heat Guns & Soldering Tools etc 15 Amp Breaker W/Reset ted On/Off Switch Duty Power Cord H/Duty Steel Housing ting Tabs es May Vary USA Designed Engineered Modeler Serious Model BuiIdrs DEALER INQUIRIES ARE WELCOME WRITE OR CALL SEND MONEY ORDER OR CHECK TODAY NO CODs PLEASE SiI2Y* liNt tN1[tIIQIIDILIISI[S P 0 BOX 23492 MILWAUKEE WI 53223 354-8698 SPECIAL $3OO ntage & Handling WI Modelers MODEL #ABI-SKE add 5% tax RC Soaring/Blakeslee Continued page 129 everybody flight group ready blow horn start slot think air good launch hand-tow right away flight time starting release air doesnt look too good can wait until some body else launches see real cat-and-mouse game have ground horn blows end slot careful timing land ing required winner slot given 1000 points others slot given percentage 1000 points depending upon score landing points compared winners score BARCS competitions have several preliminary rounds top nine fliers go head-to-head flyoff determine winner Sounds exciting doesnt Reading books magazines other countries has advantage giving us some new interesting per spectives Progress Princeton Michael Selig wrote let everyone know about progress testing air foils low-speed wind tunnel Princeton University Michael listed names modelers making wing section models people have contributed time and/or money measurement systems said contributions have amounted almost $15000 body Michaels letter Since have such large number build ers will have some airfoils duplicated can examine effects model variability performance stage have orders out 12 models expect begin coming around same time will have system up running will split experimental program two phases first will measure lift drag previously mentioned airfoils Reynolds numbers 100000 200000 300000 results experiments will compared predictions Eppler Somers computer program design anal ysis low-speed airfoils recent ISES code two-dimensional viscous aero dynamic design analysis code developed Drela Giles MIT Eppler Somers code uses potential flow calculate inviscid velocity distributions Drag calculated using surface velocity dis tribution edge velocity integral boundary layer equations cannot account separation bubbles ISES code discretizes Euler equations describe outer inviscid flow couples boundary layer through displacement thickness Again integral boundary layer equa tion used closure models elab orate used Eppler Somers Fur thermore ISES code appears capture features separation bubbles therefore can account additional bubble drag preliminary work ISES code seems better lower Reynolds numbers Eppler Somers code second phase will design test least 10 new airfoils airfoils will de signed Eppler Somers code design mode comparisons between theory experiment first phase ex pect identify favorable features pressure distributions low-Reynolds-number airfoils should incorporated design new airfoils will screen newly designed air foil using ISES code predictions look promising will have built test wind tunnel way expect finish several good low-Reynolds-number airfoils RC Sailplanes effort raise funds additional equipment will make video entitled Low Reynolds Number Airfoil Testing Princeton University will describe basic aero dynamics airfoils low Reynolds numbers discuss detail particular facility per forming low-Reynolds-number airfoil measure ments VHS tape will roughly 40-minutes long available $25 donation amount $8 will go cost tape postage $17 will put toward equipment As final note though plan finish testing 30 airfoils end August ex periments will stop As long interest tests will continue way another PS think taking long time us answer letters youre probably right being swamped mail have questions about please write directly authors John Donovan & Michael Selig Dept Mech Aero Engi neering Engineering Quadrangle Princeton Uni versity Princeton NJ 085g winches John Wyss article F3B winches sparked considerable interest John Men ard Torrey Pines Club San Diego good enough write share findings building chib winches tested different types winches over four-year period including some $2000 F3B winches DGM motors monofilament line found must match drum size motor get best performance rebuilt Ford long-shaft motor found winch drum three-inch-diameter hub 6-in -diameter end plates 4 between end plates worked best drums must welded -in aluminum end plates testing blew up fabricated bolted together drum DGM motor new winches smooth strong launch almost well F3B winches much less cost have retired machinist named Ken Moore makes frames drums special turnarounds us builds five time because setup time turnaround fantastic included Kens $150 price has 2/2-in-diameter recessed pulley double ball bearings use two solenoids series because case gets stuck other will still open shut off power also use toggle safety switch case foot switch sticks have used same type wiring club winches over six years competition sport flying have runaway winch ball bear ing has machined fit end starter shaft however needle bearing very easy install some members winches have given great service just adding bearing alone parts use along prices Caner precision rebuilt Ford long-shaft starter #31 l5$30 Wells Mfg Co #F496 solenoids two wired series$12 Willys Electronic Sup ply safety switch #35-080 SPST on/off ISA 125 VAC$3 80 Foot switchSelectra Switch SS5 19$450 Selectras address PO Box 1585 Covina CA 91722 Needle bearing Torrington B1012$l87 Ball bearing 5/s-in shaft$3 25 Connectors$3l0 Cables$l 110 Aluminum drum frame turnaround$3059 Machining welding$ 150 sub-total$25021 Delco Dura Power 650 amp-hour battery$70 #15 #18 braided nylon linel 200 ft$ 10 total$33021 Thanks very much good information John anyone wants info suspect letter John SASE should trick Johns address 511 CalIe De Los Potros Bonita CA 92002 Confused about new frequencies new frequencies something RCers must know about understand Im going go column because much being written magazine Fred Marks George Myers others What want call attention September 1987 133 series four articles Flying Models magazine Bob Aberle Bob chairman AMAs Frequency Committee new fre quencies secured FCC articles June through September issues FM cover history frequency prob lems right through new equipment will required fly 20 kHz other 10 kHz commercial broadcasters different perspective always good think youll enjoy reading Bobs four articles Soartech #6 available Most Sailplaners have undoubtedly heard Soartech series jour nals edited published Herk Stokely Vir ginia Herk also writes Soaring column Flying Models magazine Herk puts out Soartech once twice year contains papers mainly technical nature appeal greatly scientists among us Once read can understand amount work Herk various authors put No 6 contains 154 pages includes Wind tunnel testing low-Reynolds-Number-airfoils Princeton University Michael Selig German/EnglishEnglish/German technical dic tionary RC Sailplane terminology Armin Saxer Optimization System RC Sail plane Armin Saxer Airfoil Families 12A 14A ISA RoIf Girsberger Equi librium Stability Load Tail David Fraser Friction Drag Pressure Drag Airfoils WH Phillips BASIC language program estimating weight RC Sailplanesbased Schlosser Max Cher noff New Developments plotting air foils home computers dot-matrix print ers k Anderson Pascal program automatic performance estimationbased VJIITAQE -C PLAN CONSOLIDATED PBY-5A CATALINA 9 FT WING SPAN ALL RIBS B PULL FORMtRS SHOWN ON PLANS1 PLASrIC ENGCOWLS sioBO PR CLEAR GUN BUSTERS $ 760 PR 4 LARGE PLAN SHEETS s $895 GET WING SPAN MODEL PBY-5A ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $ 550 PR ADD V 300 POSTAGE Saxer Simons programs Soartech No 2 Ed Karns Calculation Neutral Point Static Margin Ernie Currington Issue No 6 back issues available Herk very reasonable $5 per copy Herks address 1504 Horseshoe Circle Virginia Beach VA 23451 F3B news Did everyone notice three items important news Don Lowes Presidents Cor ner July issue AMA News maga zine First announced 1989 F3B World Championships would held countryprobably somewhere East Coast fact Soaring World Championships will just four World Championships will going same time other World Champs will Pattern Pylon Helicopter really excellent news because will give spectators chance see other model flying addition main interest other announcements F3B rules expected 1988 will proposal drop Speed task Dick Crowley April Plenary meeting said sup port dropping Speed task fairly unani mous appears nature F3B will change drastically below proposal West Germany eliminate Weak Link rule accepted Technical Committee majority still feel should some means limiting power imparted model during launch As yet nobody has able write rules winches would limit power also prevent people going megabuck exotic machinery Ground War call Europe Finally Builder Model rule dropped people flying com pletely finished Hans Muller planes little point claiming buildership just because installed radio F3B Speed task assume CLAM Plenary Session next April approves drop ping Speed task next question will affect F3B designs talking John Wyss about learned thinks designers will go larger planes higher-aspect-ratio wings aim will get higher launches windy weather improve L/D max imize number laps can flown four minutes allowed course Distance task Big planes have consider weak link John feels weak link actually pretty strong wont inhibit planes bit larger normal today next question will two-task F3B event attract competitors Rightly wrongly Speed task probably did scare off some beginners once fliers became accustomed F3B flying no fear task So elimination Speed will probably go down perception alteration rather real change way event flown As long talking about International Soaring Id like get something off chest Ive long thought about having International event Duration No Speed no Dis tance tasks elimination Speed will prob ably diminish demand Duration World Champs still think would have merit six-minute precision task now run F3B pretty much automatic considered task decent pilots dont lose points Duration-only event could use British percentage slot system would excit ing competitors spectators alike What Im really interested seeing what type ship would developed might much differ ent designs will seeing Duration/Distance event other hand might big polyhedral rudder/elevator plane New Wilshire catalog latest dated May 1987 Sailplane catalog available Wilshire Model Center Wilshire has established repu tation importing interesting Sailplanes around worldespecially Germany great blow owner Hans Weiss suddenly died about two years ago fortunately Mrs Maddy Weiss has kept shop going Im sure Hans would approve planes Wilshires current catalog too kits catalog list Id like name manufacturers have least plane represented Germany Air Jet successor Carrera Michael Beineke CHK Modell Eisman Mul tiplex kits radios accessories Graupner Robbe Rowing KDH Modellbau Great Britain Edmonds Micro Mold US Mark Grand Models Cheetah Models Bob Scaly Quality Fiberglass JM Glascraft Aeronautics Larry Hargraves Models Advanced Glider Concepts Sailplanes Santa Monica Magnum Hi Starts think partial lineup likely see local hobby store youre market kit moment Wilshire catalog lot fun just look over get familiar what available Sailplane-wise Send $250 Wilshire 2836 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 8289362 Elec tries another $250 will get Wilshires cat alog electric motors kits etc just full Sailplane catalog Computerized airfoil plotting design pro 134 Model Aviation IGITIOIIII TREKS PROFILEVCOMBATVRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UKIFLOW & STIIDD hum Dliii Ful Ingredients Fo detailed broclum50C stamps/check CAROLINA-TAFFINDER 8345 Delhi Road Dept North Charleston SC 29418 803-553-7169 CATALOGOVER 50 PLANS $00 DEALERS WRITE WORLDWIDE SID MORGAN 13157 ORMOND BELLE VILLE 4BIII USA youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 40, 41, 129, 133, 134, 135
Radio Control Soaring Byron Blakeslee editor added some confusion scheme things editorial comment about team funding inserted Byron Blakeslees June 1987 column comment worded such way readers might mistakenly believe contributions Team Fund could used defray expenses involved team member taking spouse World Champs Such NOT case Team Fund used help defray costs taking additional team-support person nel Champs help pay rental vehicles spouse accompanies team mem ber spouses expenses respon sibility team member RMcM CLUB month following write-up Clarence Sailplane Society comes club secretary Lyn Perry newsletter editor Roman Pasyz Roman also took pictures supplied information captions Clarence Sailplane Society AMAchartered club 1883 begun late 1982 founding father Ed Waters no fly him members drawn across Western New York including Buffalo surrounding towns members including Ed Clarence NY flying site series marvelous turf farms located Clarence hence name 54 us interesting guys however illustrious members include AMA 20 former AMA President John Grigg AMA 195 Ron Kirk beeyootiful work LJMP Pantera Prodigyjust won annual building contest Viking Playboy Electrics Cur rent club president Jim Sonnenmeier completing doctorate aerospace engineering State University New York Buffalo some members work local aerospace companies number several teachers among ranks run gamut ages high school students retirees often beat us younger folks fly anything evidenced club inventory everything 11-lb XCs two six Windsongs three flying three building Sailaire etc l0-oz Zephyrs Gnomes like last count 23 Gentle Ladies being flown result one-design contest held 1985 weve taken few steps Electric 10 us have Electrics planning first fun-fly summer Since founding weve developed active contest calendar frequently attend events Rochester NY well Canada proud est 1985 Carl Goldberg Memorial Gentle Lady contest generated $300 medical research 1986 host ing two-day LSF Northeastern Regionals attracted over 30 fliers Parenthetically six us have achieved LSF Level III status hard work Level IV Thanks chance brag bit its wonder ful hobby intend continue having fun flying forever new Gilding book titled Radio Controlled Glid ing Dave Jones has recently come us Britain aimed beginners intermediates both Thermal Slope flying Dave editor 40 Model Aviation Roman aryz Sagitta XC-Pius has seversi mods standard kit thicker fuliy sheeted main wing panels duel-blade wing joiners thicker horizontal tail 3-In fuselage stretch Sin thetail Unballasted weight 10 ib 11 oz uses ROG takeoffs Plane has fastest Speed run clubs modified F3B contest Paryz photo Dave Jones new Soaring book aimed beginners info coiumn John Wyss poseawith the86 version P3B design Virga NoteClarence Sailplane Societys annual covering contest siways has piastic-pipe cradle keep plane out harms waygood turnout club has 6 winter meetings yearly Paryz plc FormerAMA PresidentJohn Griga launches LIMP Meteor Clarence Soaring Societys ciub fieid Paryz photo Thermal Soaring column British magazine Radio Control Models Electronics Slope parts book written Keith Thomas formerly wrote Slope Soar ing column same magazine Ive read entire book Id recommend highly getting started great rapidly grow ing hobby/sport Rather describing about think would illuminating quote Daves introduction great source sadness to see keen beginner become disillusioned dis gruntled refugee Soaring simply because has made elementary mistakes hoped book will dispel mists inex perience jargon misfortune heartbreaks surround learning fly model Sailplanes ways book wished able read first few years Soaring aim book provide infor mation advice necessary beginner Soaring able become competent sport flier other words aimed pilots knowledge skill range raw beginners sort expertise expected competent sport flier things firsthand experience can teach book will allow rise armchair immediately successful However will allow Continued page 129 Dave Thompson builtthiswinch frame K-Mart hand truck Wheeis removed during launches battery charger buiit heavy-duty emergency knife switch came RV shop [E IX] ID FA U J 1U - W.hc~ iSeakd Ttcoe-SaoI t$cfoocdUoOcdeJq - Designed Basic Macta Flying Medal Following Bout-Up Prototype Practice Wood ond Fobic p...If RalIico Roiloinr-o Uco ThorccShecddoi Yoo r$j~M y Howl Historically Presented 4 Jenny 537 81 OH Mocqoito tb $42 57Pt$39 108 OH MocqoBoecic $55 ne-Roe$52 98 Scror PTl7Koydet $56 60 Scyornrerin S68 $2471 Sect DC3 C471 Pore toon $32 99 NtIIc Wideec P61 $69 SkyCe 0Doehttlnc$48- 72 CenOSUl /4 L&S $44 O5 nocoope Spoct $36- lOt Ce 0361/4 L&S $56 loll Spn toildog $43r 60 Sooglec M2 Moil $24 107 Aenenco C3 Opt $35 68 tictel tclldeg Pt $30 42 Hoccend tece Ike $45 59 treentoce McLA 554 . 78 Some WW $35 107 Gecro tcenct Ftp $54ffiro 63 Ce Gechk PliC $42 69 Lindbegc NO211 $28 94 Cc Cechk Ft C $54 91 Liodbnrgc NO511 $39 eter Cornet fec $24 96 WeNWiNoc Roc 62 teerMMclligen $35 74 C Helldcn St2C4 $55 94 HccnMrldclligoe $45 155 Po,clrPS19 Tr $59 63 teeing P-26A Pt $36 60 Woce Taper-Wing $36 84 teeing P26A Pt $48 90 Wece TepcnWieg $48 69 Wece C6 Cobb$36 75 Wecrl 4 Lyconda $32 44 Bench C17-t Slog $38 100 Woct 4 Lyceede $49 * O6tencb C17-t Slog $49 S7PedT o 4AT $36 j 55 Leck 11 Elactro 830 76 Perd Tenet 4AT $48 82 Lock 11 Electre 845 1 l4Pedrjnrtn4AT$65 Strecen T/W 087 $18 96 telloece Airencie $40 81 Strnceo 0/W Sty $36 93 Lonning C2Acpb $49 132 Stirreen T/W St7 $38 58 Onon J3P Sock $39 Sttnctel Pt P38- 5311 ltGnonr J3P Occic $56 118 tnrctol Pt P208 $45 134 Lock Al topcc $484 Tcrnnne Pecco 845 63 Lock Al Eepnecc$24 56Con Werlnk P45 $34 83 Lock Sc trace $36 60 Vogt Concoin P411 $3577WWrnc 131 tndL $48 80 VogI Concoin P48 $6963 C Onolroock P7C1 $45 *78 Lock Light5 P38 83894 C Snolocelc P7C1 $5756 tepSee-Bne Are $34 108 Siko 038 Anrpfr $49 74 tnpSno$ae Arc $39 60 toning 160 Spent $36.- 7g Pipe J3 Cob$29 90 toeing tog Sport $49 156 Piper 33 Cob$39- 75 Nennhop Goocoro $48 9$ Lock Hodeen tork $38 96 N 63 Gron P6P Hellcat $28 90 0 77 toning 817G Font $35 60S 103 toe 0170 Pent $55 190 68 Wectl Whiniceind $32 78 C 48 N Acre Neele 839 104 6g ttononao VToil $39 65 M 77 Loccoerbe Sedon 825 97 M 72 NA 825 $onrbe $49 65 C 65 MMoocdnn 826 849 94 C Sold Thro Snob, Pice Ocer 1400 Morn SOc Up 612 Add 10% oil oder chipping & cc. ntcte Con & Mee Slcnnhenr Ic 15% 25% ci f0~Jc Pictoriol cotolog $200 linclodec Pnicn Lien Pnice lid encconolonn5loO ltkyerrtorergn odd$108 CLEVELAND MODEL&SUPPLY cOoO0 t eoccceocnrotretc 1 Ncr tereric circod tin rc baccce t03$7t DtTtOtT AVE CLEVELAND OHIO 44182 joinner ocearco oarcnc PeoncreS IS PMSST 1OrDST112161961 3000 locoeccocOeccer DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 SPECIAL PRO SERIES PITCH 3 4 28 3 3* 4a Sn 6 3 3&3/4a 4 5 6 8 4 5 6 6*n 7 4 5 6 6* 7 7* 45 6 6W 6* 7 8W 6EW 4 6 7 7* 7*a 7&3/4 8 6EW0 6 7 4W 5 5W 6 5 6 5 6 5 6 6 Tn 8 FOUR-CYCLE TAILORED HELICAL PITCH 1266* 7 7* 8 13677*8 146 7 7*8 1567 16678 PYLON RACING 75N 5*N*279 8&3/46* 6&3/4 7 7* 7&3/4*289 97 7* 7&3/4$289 W Wtde blade EW Extra wide N Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX PRICE $149 *179 *189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 September 1987 41 OUR INVENTORY AVERAGES OVER 8000 PROPS! Air e Land r FOR RADIO CONTROL CRYSTALS RELY ON JAN FOR 3-WAY HELP 1 TECHNICALLY CORRECT Reliable frequency control 2 QUICK TURNAROUND huge inventory prompt service Emergency Order Plan LOW PRICES QUARTZ CRYSTALS FOR Two-Way stry ne Amateurs Microprocessor Scanners yists FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 ViSA11 ILW CALL 1-800-237-3063 FREE except Florida CLOSED FRIDAYS WHY DO I 0 C 0 r- 0 N Soarings Finest FLY DODGSON DESIGNS GLIDERS Ask 30 Windsong flyers 1986 NW Soaring Season Championship contest Ask 25 Camano Windsong flyers 1987 Western Soaring Championships Modesto CA Wherever great soaring being done Dodgson design gliders doing better Pictured Shawn Lenci Escalon CA some 1986 trophies won Dodgson Designs Gliders flying open class bad kid Send 2 stamps catalog WIN OSONG CAMANO 2Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify BETA 8mm format VISA & MASTER CHARGE Oko 15995Pixy 14995Ply P1 7500 DODGSON DESIGNS 0 DAMSON ROAD BOTHELL WA 980211 haps hardest part younger mod elers carving balsa nose cones shape gang new razor-andsharp-knife carving scene fortunately no fingers slicedthough Erik did earn Purple Heart award class mates nicked forefinger drawing bit blood Now covering Should wings tails fuselages covered first Wings de creed chief instructor Mel covering material handed out Much discussion about color combinations ensued trades between students after lively con sultations designs felt suited him best provided fun Whoever can remember first attempt iron-on method covering models knows what students first covered wings looked like wrinided mess said Lars forged ahead own What can lamented students quite quality-con scious now blow-dryer heat gun supplied chief instructor Mel came rescue 15 minutes wing covering tight drum Lars happily received peers congratulations beautiful translucent red-and-green wing first teenagers wings finished built heard amazed parent eager fledglings proudly carried beautiful multicolored wings out carefully loaded Gliders waiting cars Seven wings covered quitting time Erik joined class late scrambling finish model decided stay after hours finish up structor Things really getting exciting now Radios ordered due last session Day 6 Mel old-timers smiled Lets land em weve got em really hooked now radios arrived Ever see eight RC systems colorful boxes nested side big box Naturally old-timer would want check out goods inside Futaba Conquest cartons before Sat urdays class Once sure worked class members called come pick up new systems get ac quainted charge up Saturdays class Day 7 arrived humming Right away though ran some hurdles first problem caused decision use Quik Link keepers between servos torque rods positioned servos Quik Links proved too high cabin interior Goldberg Gentle Ladys small fuse lage bumped against bottom wing So out Quik Links back plans students taught make Z-bend forward end music wire linked torque rod tail surface Daves Jeffs Kens Eriks radios fitted torque rods con nected rudders elevators four just about finished Matt Charles Lars Case gotten behind due going out town spring break tut tut Jeff Erik firstto discover next problem wont fit cried out almost simultaneously plans called square battery Futabas flat Uh oh young mens introduction common RC malady final assembly rework gave chance try out ingenuity Jeff solved problem stripping plastic covering battery re positioning batteries square bending lead-out wires re-wrap ping black tape obtained during lunch break Jeff wanted finish Erik figured way fit battery case special angle Others followed suit left switch harness hook installation hi-starting complete final assembly work Some Gliders readier others rapidly heading toward longawaited flight test Wed counted having pictures launchings Sunday supplement story Mike photographer showed up take outdoor photos finished near-finished models brought news story would appear next Monday no time arrange photo session official flight tests him grand finale would make papers after best-laid plans. old-timer heard grumble disappointment yesbut consolation story would out published Bulletin before Bend Aero Modelers mall show scheduled next weekend Giving students opportunity showing off Gentle Lady Gliders alongside RAM club members aircraft would make fitting end Learn Fly RC Airplanes class Flying would have await permission Bends fickle spring weather Travelers passing through central Oregon Bend reported have noticed looked skywards unusual flurry activity vicinity 27th Knott spring 1987 Beneath flock Gliders thermaling overhead some may have observed stood two figures necks craned eagerly upwards travelers come closer bent ear would have seen chief structor Mel smiling old-timer cohorts heard him pronounceWe landed em Now next school RC Soaring/Blakeslee Continued page 41 tackle learning task hopefully greater understanding knowledge chance success hook available Zenith Aviation Books see ad issue Wilshire Model Center $1595 word warning Id like pass along about book since written mainly British Soarers contains descriptions things dont have over hand-towing principal method launching Brit ain virtually unknown US Dave also describes BARCS British Association Radio Control Soarers rules competitions BARCS organizes Actually standard BARCS competition very interesting would worth try over First always fly man-on-mannot uniquebut fun part what call percentage slot objective fly longest eight- 10- 15-minute time period Continued page 133 September 1987 129 INTRODUCING ST D M VARIABLE SPEED THE NEW Ft rrIFI POWER CENTER 1 Variable Control Outlet Dremel & Brush Type Motor Tools 5 Outlets Handle Covering Irons Heat Guns & Soldering Tools etc 15 Amp Breaker W/Reset ted On/Off Switch Duty Power Cord H/Duty Steel Housing ting Tabs es May Vary USA Designed Engineered Modeler Serious Model BuiIdrs DEALER INQUIRIES ARE WELCOME WRITE OR CALL SEND MONEY ORDER OR CHECK TODAY NO CODs PLEASE SiI2Y* liNt tN1[tIIQIIDILIISI[S P 0 BOX 23492 MILWAUKEE WI 53223 354-8698 SPECIAL $3OO ntage & Handling WI Modelers MODEL #ABI-SKE add 5% tax RC Soaring/Blakeslee Continued page 129 everybody flight group ready blow horn start slot think air good launch hand-tow right away flight time starting release air doesnt look too good can wait until some body else launches see real cat-and-mouse game have ground horn blows end slot careful timing land ing required winner slot given 1000 points others slot given percentage 1000 points depending upon score landing points compared winners score BARCS competitions have several preliminary rounds top nine fliers go head-to-head flyoff determine winner Sounds exciting doesnt Reading books magazines other countries has advantage giving us some new interesting per spectives Progress Princeton Michael Selig wrote let everyone know about progress testing air foils low-speed wind tunnel Princeton University Michael listed names modelers making wing section models people have contributed time and/or money measurement systems said contributions have amounted almost $15000 body Michaels letter Since have such large number build ers will have some airfoils duplicated can examine effects model variability performance stage have orders out 12 models expect begin coming around same time will have system up running will split experimental program two phases first will measure lift drag previously mentioned airfoils Reynolds numbers 100000 200000 300000 results experiments will compared predictions Eppler Somers computer program design anal ysis low-speed airfoils recent ISES code two-dimensional viscous aero dynamic design analysis code developed Drela Giles MIT Eppler Somers code uses potential flow calculate inviscid velocity distributions Drag calculated using surface velocity dis tribution edge velocity integral boundary layer equations cannot account separation bubbles ISES code discretizes Euler equations describe outer inviscid flow couples boundary layer through displacement thickness Again integral boundary layer equa tion used closure models elab orate used Eppler Somers Fur thermore ISES code appears capture features separation bubbles therefore can account additional bubble drag preliminary work ISES code seems better lower Reynolds numbers Eppler Somers code second phase will design test least 10 new airfoils airfoils will de signed Eppler Somers code design mode comparisons between theory experiment first phase ex pect identify favorable features pressure distributions low-Reynolds-number airfoils should incorporated design new airfoils will screen newly designed air foil using ISES code predictions look promising will have built test wind tunnel way expect finish several good low-Reynolds-number airfoils RC Sailplanes effort raise funds additional equipment will make video entitled Low Reynolds Number Airfoil Testing Princeton University will describe basic aero dynamics airfoils low Reynolds numbers discuss detail particular facility per forming low-Reynolds-number airfoil measure ments VHS tape will roughly 40-minutes long available $25 donation amount $8 will go cost tape postage $17 will put toward equipment As final note though plan finish testing 30 airfoils end August ex periments will stop As long interest tests will continue way another PS think taking long time us answer letters youre probably right being swamped mail have questions about please write directly authors John Donovan & Michael Selig Dept Mech Aero Engi neering Engineering Quadrangle Princeton Uni versity Princeton NJ 085g winches John Wyss article F3B winches sparked considerable interest John Men ard Torrey Pines Club San Diego good enough write share findings building chib winches tested different types winches over four-year period including some $2000 F3B winches DGM motors monofilament line found must match drum size motor get best performance rebuilt Ford long-shaft motor found winch drum three-inch-diameter hub 6-in -diameter end plates 4 between end plates worked best drums must welded -in aluminum end plates testing blew up fabricated bolted together drum DGM motor new winches smooth strong launch almost well F3B winches much less cost have retired machinist named Ken Moore makes frames drums special turnarounds us builds five time because setup time turnaround fantastic included Kens $150 price has 2/2-in-diameter recessed pulley double ball bearings use two solenoids series because case gets stuck other will still open shut off power also use toggle safety switch case foot switch sticks have used same type wiring club winches over six years competition sport flying have runaway winch ball bear ing has machined fit end starter shaft however needle bearing very easy install some members winches have given great service just adding bearing alone parts use along prices Caner precision rebuilt Ford long-shaft starter #31 l5$30 Wells Mfg Co #F496 solenoids two wired series$12 Willys Electronic Sup ply safety switch #35-080 SPST on/off ISA 125 VAC$3 80 Foot switchSelectra Switch SS5 19$450 Selectras address PO Box 1585 Covina CA 91722 Needle bearing Torrington B1012$l87 Ball bearing 5/s-in shaft$3 25 Connectors$3l0 Cables$l 110 Aluminum drum frame turnaround$3059 Machining welding$ 150 sub-total$25021 Delco Dura Power 650 amp-hour battery$70 #15 #18 braided nylon linel 200 ft$ 10 total$33021 Thanks very much good information John anyone wants info suspect letter John SASE should trick Johns address 511 CalIe De Los Potros Bonita CA 92002 Confused about new frequencies new frequencies something RCers must know about understand Im going go column because much being written magazine Fred Marks George Myers others What want call attention September 1987 133 series four articles Flying Models magazine Bob Aberle Bob chairman AMAs Frequency Committee new fre quencies secured FCC articles June through September issues FM cover history frequency prob lems right through new equipment will required fly 20 kHz other 10 kHz commercial broadcasters different perspective always good think youll enjoy reading Bobs four articles Soartech #6 available Most Sailplaners have undoubtedly heard Soartech series jour nals edited published Herk Stokely Vir ginia Herk also writes Soaring column Flying Models magazine Herk puts out Soartech once twice year contains papers mainly technical nature appeal greatly scientists among us Once read can understand amount work Herk various authors put No 6 contains 154 pages includes Wind tunnel testing low-Reynolds-Number-airfoils Princeton University Michael Selig German/EnglishEnglish/German technical dic tionary RC Sailplane terminology Armin Saxer Optimization System RC Sail plane Armin Saxer Airfoil Families 12A 14A ISA RoIf Girsberger Equi librium Stability Load Tail David Fraser Friction Drag Pressure Drag Airfoils WH Phillips BASIC language program estimating weight RC Sailplanesbased Schlosser Max Cher noff New Developments plotting air foils home computers dot-matrix print ers k Anderson Pascal program automatic performance estimationbased VJIITAQE -C PLAN CONSOLIDATED PBY-5A CATALINA 9 FT WING SPAN ALL RIBS B PULL FORMtRS SHOWN ON PLANS1 PLASrIC ENGCOWLS sioBO PR CLEAR GUN BUSTERS $ 760 PR 4 LARGE PLAN SHEETS s $895 GET WING SPAN MODEL PBY-5A ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $ 550 PR ADD V 300 POSTAGE Saxer Simons programs Soartech No 2 Ed Karns Calculation Neutral Point Static Margin Ernie Currington Issue No 6 back issues available Herk very reasonable $5 per copy Herks address 1504 Horseshoe Circle Virginia Beach VA 23451 F3B news Did everyone notice three items important news Don Lowes Presidents Cor ner July issue AMA News maga zine First announced 1989 F3B World Championships would held countryprobably somewhere East Coast fact Soaring World Championships will just four World Championships will going same time other World Champs will Pattern Pylon Helicopter really excellent news because will give spectators chance see other model flying addition main interest other announcements F3B rules expected 1988 will proposal drop Speed task Dick Crowley April Plenary meeting said sup port dropping Speed task fairly unani mous appears nature F3B will change drastically below proposal West Germany eliminate Weak Link rule accepted Technical Committee majority still feel should some means limiting power imparted model during launch As yet nobody has able write rules winches would limit power also prevent people going megabuck exotic machinery Ground War call Europe Finally Builder Model rule dropped people flying com pletely finished Hans Muller planes little point claiming buildership just because installed radio F3B Speed task assume CLAM Plenary Session next April approves drop ping Speed task next question will affect F3B designs talking John Wyss about learned thinks designers will go larger planes higher-aspect-ratio wings aim will get higher launches windy weather improve L/D max imize number laps can flown four minutes allowed course Distance task Big planes have consider weak link John feels weak link actually pretty strong wont inhibit planes bit larger normal today next question will two-task F3B event attract competitors Rightly wrongly Speed task probably did scare off some beginners once fliers became accustomed F3B flying no fear task So elimination Speed will probably go down perception alteration rather real change way event flown As long talking about International Soaring Id like get something off chest Ive long thought about having International event Duration No Speed no Dis tance tasks elimination Speed will prob ably diminish demand Duration World Champs still think would have merit six-minute precision task now run F3B pretty much automatic considered task decent pilots dont lose points Duration-only event could use British percentage slot system would excit ing competitors spectators alike What Im really interested seeing what type ship would developed might much differ ent designs will seeing Duration/Distance event other hand might big polyhedral rudder/elevator plane New Wilshire catalog latest dated May 1987 Sailplane catalog available Wilshire Model Center Wilshire has established repu tation importing interesting Sailplanes around worldespecially Germany great blow owner Hans Weiss suddenly died about two years ago fortunately Mrs Maddy Weiss has kept shop going Im sure Hans would approve planes Wilshires current catalog too kits catalog list Id like name manufacturers have least plane represented Germany Air Jet successor Carrera Michael Beineke CHK Modell Eisman Mul tiplex kits radios accessories Graupner Robbe Rowing KDH Modellbau Great Britain Edmonds Micro Mold US Mark Grand Models Cheetah Models Bob Scaly Quality Fiberglass JM Glascraft Aeronautics Larry Hargraves Models Advanced Glider Concepts Sailplanes Santa Monica Magnum Hi Starts think partial lineup likely see local hobby store youre market kit moment Wilshire catalog lot fun just look over get familiar what available Sailplane-wise Send $250 Wilshire 2836 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 8289362 Elec tries another $250 will get Wilshires cat alog electric motors kits etc just full Sailplane catalog Computerized airfoil plotting design pro 134 Model Aviation IGITIOIIII TREKS PROFILEVCOMBATVRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UKIFLOW & STIIDD hum Dliii Ful Ingredients Fo detailed broclum50C stamps/check CAROLINA-TAFFINDER 8345 Delhi Road Dept North Charleston SC 29418 803-553-7169 CATALOGOVER 50 PLANS $00 DEALERS WRITE WORLDWIDE SID MORGAN 13157 ORMOND BELLE VILLE 4BIII USA youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 40, 41, 129, 133, 134, 135
Radio Control Soaring Byron Blakeslee editor added some confusion scheme things editorial comment about team funding inserted Byron Blakeslees June 1987 column comment worded such way readers might mistakenly believe contributions Team Fund could used defray expenses involved team member taking spouse World Champs Such NOT case Team Fund used help defray costs taking additional team-support person nel Champs help pay rental vehicles spouse accompanies team mem ber spouses expenses respon sibility team member RMcM CLUB month following write-up Clarence Sailplane Society comes club secretary Lyn Perry newsletter editor Roman Pasyz Roman also took pictures supplied information captions Clarence Sailplane Society AMAchartered club 1883 begun late 1982 founding father Ed Waters no fly him members drawn across Western New York including Buffalo surrounding towns members including Ed Clarence NY flying site series marvelous turf farms located Clarence hence name 54 us interesting guys however illustrious members include AMA 20 former AMA President John Grigg AMA 195 Ron Kirk beeyootiful work LJMP Pantera Prodigyjust won annual building contest Viking Playboy Electrics Cur rent club president Jim Sonnenmeier completing doctorate aerospace engineering State University New York Buffalo some members work local aerospace companies number several teachers among ranks run gamut ages high school students retirees often beat us younger folks fly anything evidenced club inventory everything 11-lb XCs two six Windsongs three flying three building Sailaire etc l0-oz Zephyrs Gnomes like last count 23 Gentle Ladies being flown result one-design contest held 1985 weve taken few steps Electric 10 us have Electrics planning first fun-fly summer Since founding weve developed active contest calendar frequently attend events Rochester NY well Canada proud est 1985 Carl Goldberg Memorial Gentle Lady contest generated $300 medical research 1986 host ing two-day LSF Northeastern Regionals attracted over 30 fliers Parenthetically six us have achieved LSF Level III status hard work Level IV Thanks chance brag bit its wonder ful hobby intend continue having fun flying forever new Gilding book titled Radio Controlled Glid ing Dave Jones has recently come us Britain aimed beginners intermediates both Thermal Slope flying Dave editor 40 Model Aviation Roman aryz Sagitta XC-Pius has seversi mods standard kit thicker fuliy sheeted main wing panels duel-blade wing joiners thicker horizontal tail 3-In fuselage stretch Sin thetail Unballasted weight 10 ib 11 oz uses ROG takeoffs Plane has fastest Speed run clubs modified F3B contest Paryz photo Dave Jones new Soaring book aimed beginners info coiumn John Wyss poseawith the86 version P3B design Virga NoteClarence Sailplane Societys annual covering contest siways has piastic-pipe cradle keep plane out harms waygood turnout club has 6 winter meetings yearly Paryz plc FormerAMA PresidentJohn Griga launches LIMP Meteor Clarence Soaring Societys ciub fieid Paryz photo Thermal Soaring column British magazine Radio Control Models Electronics Slope parts book written Keith Thomas formerly wrote Slope Soar ing column same magazine Ive read entire book Id recommend highly getting started great rapidly grow ing hobby/sport Rather describing about think would illuminating quote Daves introduction great source sadness to see keen beginner become disillusioned dis gruntled refugee Soaring simply because has made elementary mistakes hoped book will dispel mists inex perience jargon misfortune heartbreaks surround learning fly model Sailplanes ways book wished able read first few years Soaring aim book provide infor mation advice necessary beginner Soaring able become competent sport flier other words aimed pilots knowledge skill range raw beginners sort expertise expected competent sport flier things firsthand experience can teach book will allow rise armchair immediately successful However will allow Continued page 129 Dave Thompson builtthiswinch frame K-Mart hand truck Wheeis removed during launches battery charger buiit heavy-duty emergency knife switch came RV shop [E IX] ID FA U J 1U - W.hc~ iSeakd Ttcoe-SaoI t$cfoocdUoOcdeJq - Designed Basic Macta Flying Medal Following Bout-Up Prototype Practice Wood ond Fobic p...If RalIico Roiloinr-o Uco ThorccShecddoi Yoo r$j~M y Howl Historically Presented 4 Jenny 537 81 OH Mocqoito tb $42 57Pt$39 108 OH MocqoBoecic $55 ne-Roe$52 98 Scror PTl7Koydet $56 60 Scyornrerin S68 $2471 Sect DC3 C471 Pore toon $32 99 NtIIc Wideec P61 $69 SkyCe 0Doehttlnc$48- 72 CenOSUl /4 L&S $44 O5 nocoope Spoct $36- lOt Ce 0361/4 L&S $56 loll Spn toildog $43r 60 Sooglec M2 Moil $24 107 Aenenco C3 Opt $35 68 tictel tclldeg Pt $30 42 Hoccend tece Ike $45 59 treentoce McLA 554 . 78 Some WW $35 107 Gecro tcenct Ftp $54ffiro 63 Ce Gechk PliC $42 69 Lindbegc NO211 $28 94 Cc Cechk Ft C $54 91 Liodbnrgc NO511 $39 eter Cornet fec $24 96 WeNWiNoc Roc 62 teerMMclligen $35 74 C Helldcn St2C4 $55 94 HccnMrldclligoe $45 155 Po,clrPS19 Tr $59 63 teeing P-26A Pt $36 60 Woce Taper-Wing $36 84 teeing P26A Pt $48 90 Wece TepcnWieg $48 69 Wece C6 Cobb$36 75 Wecrl 4 Lyconda $32 44 Bench C17-t Slog $38 100 Woct 4 Lyceede $49 * O6tencb C17-t Slog $49 S7PedT o 4AT $36 j 55 Leck 11 Elactro 830 76 Perd Tenet 4AT $48 82 Lock 11 Electre 845 1 l4Pedrjnrtn4AT$65 Strecen T/W 087 $18 96 telloece Airencie $40 81 Strnceo 0/W Sty $36 93 Lonning C2Acpb $49 132 Stirreen T/W St7 $38 58 Onon J3P Sock $39 Sttnctel Pt P38- 5311 ltGnonr J3P Occic $56 118 tnrctol Pt P208 $45 134 Lock Al topcc $484 Tcrnnne Pecco 845 63 Lock Al Eepnecc$24 56Con Werlnk P45 $34 83 Lock Sc trace $36 60 Vogt Concoin P411 $3577WWrnc 131 tndL $48 80 VogI Concoin P48 $6963 C Onolroock P7C1 $45 *78 Lock Light5 P38 83894 C Snolocelc P7C1 $5756 tepSee-Bne Are $34 108 Siko 038 Anrpfr $49 74 tnpSno$ae Arc $39 60 toning 160 Spent $36.- 7g Pipe J3 Cob$29 90 toeing tog Sport $49 156 Piper 33 Cob$39- 75 Nennhop Goocoro $48 9$ Lock Hodeen tork $38 96 N 63 Gron P6P Hellcat $28 90 0 77 toning 817G Font $35 60S 103 toe 0170 Pent $55 190 68 Wectl Whiniceind $32 78 C 48 N Acre Neele 839 104 6g ttononao VToil $39 65 M 77 Loccoerbe Sedon 825 97 M 72 NA 825 $onrbe $49 65 C 65 MMoocdnn 826 849 94 C Sold Thro Snob, Pice Ocer 1400 Morn SOc Up 612 Add 10% oil oder chipping & cc. ntcte Con & Mee Slcnnhenr Ic 15% 25% ci f0~Jc Pictoriol cotolog $200 linclodec Pnicn Lien Pnice lid encconolonn5loO ltkyerrtorergn odd$108 CLEVELAND MODEL&SUPPLY cOoO0 t eoccceocnrotretc 1 Ncr tereric circod tin rc baccce t03$7t DtTtOtT AVE CLEVELAND OHIO 44182 joinner ocearco oarcnc PeoncreS IS PMSST 1OrDST112161961 3000 locoeccocOeccer DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 SPECIAL PRO SERIES PITCH 3 4 28 3 3* 4a Sn 6 3 3&3/4a 4 5 6 8 4 5 6 6*n 7 4 5 6 6* 7 7* 45 6 6W 6* 7 8W 6EW 4 6 7 7* 7*a 7&3/4 8 6EW0 6 7 4W 5 5W 6 5 6 5 6 5 6 6 Tn 8 FOUR-CYCLE TAILORED HELICAL PITCH 1266* 7 7* 8 13677*8 146 7 7*8 1567 16678 PYLON RACING 75N 5*N*279 8&3/46* 6&3/4 7 7* 7&3/4*289 97 7* 7&3/4$289 W Wtde blade EW Extra wide N Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX PRICE $149 *179 *189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 September 1987 41 OUR INVENTORY AVERAGES OVER 8000 PROPS! Air e Land r FOR RADIO CONTROL CRYSTALS RELY ON JAN FOR 3-WAY HELP 1 TECHNICALLY CORRECT Reliable frequency control 2 QUICK TURNAROUND huge inventory prompt service Emergency Order Plan LOW PRICES QUARTZ CRYSTALS FOR Two-Way stry ne Amateurs Microprocessor Scanners yists FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 ViSA11 ILW CALL 1-800-237-3063 FREE except Florida CLOSED FRIDAYS WHY DO I 0 C 0 r- 0 N Soarings Finest FLY DODGSON DESIGNS GLIDERS Ask 30 Windsong flyers 1986 NW Soaring Season Championship contest Ask 25 Camano Windsong flyers 1987 Western Soaring Championships Modesto CA Wherever great soaring being done Dodgson design gliders doing better Pictured Shawn Lenci Escalon CA some 1986 trophies won Dodgson Designs Gliders flying open class bad kid Send 2 stamps catalog WIN OSONG CAMANO 2Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify BETA 8mm format VISA & MASTER CHARGE Oko 15995Pixy 14995Ply P1 7500 DODGSON DESIGNS 0 DAMSON ROAD BOTHELL WA 980211 haps hardest part younger mod elers carving balsa nose cones shape gang new razor-andsharp-knife carving scene fortunately no fingers slicedthough Erik did earn Purple Heart award class mates nicked forefinger drawing bit blood Now covering Should wings tails fuselages covered first Wings de creed chief instructor Mel covering material handed out Much discussion about color combinations ensued trades between students after lively con sultations designs felt suited him best provided fun Whoever can remember first attempt iron-on method covering models knows what students first covered wings looked like wrinided mess said Lars forged ahead own What can lamented students quite quality-con scious now blow-dryer heat gun supplied chief instructor Mel came rescue 15 minutes wing covering tight drum Lars happily received peers congratulations beautiful translucent red-and-green wing first teenagers wings finished built heard amazed parent eager fledglings proudly carried beautiful multicolored wings out carefully loaded Gliders waiting cars Seven wings covered quitting time Erik joined class late scrambling finish model decided stay after hours finish up structor Things really getting exciting now Radios ordered due last session Day 6 Mel old-timers smiled Lets land em weve got em really hooked now radios arrived Ever see eight RC systems colorful boxes nested side big box Naturally old-timer would want check out goods inside Futaba Conquest cartons before Sat urdays class Once sure worked class members called come pick up new systems get ac quainted charge up Saturdays class Day 7 arrived humming Right away though ran some hurdles first problem caused decision use Quik Link keepers between servos torque rods positioned servos Quik Links proved too high cabin interior Goldberg Gentle Ladys small fuse lage bumped against bottom wing So out Quik Links back plans students taught make Z-bend forward end music wire linked torque rod tail surface Daves Jeffs Kens Eriks radios fitted torque rods con nected rudders elevators four just about finished Matt Charles Lars Case gotten behind due going out town spring break tut tut Jeff Erik firstto discover next problem wont fit cried out almost simultaneously plans called square battery Futabas flat Uh oh young mens introduction common RC malady final assembly rework gave chance try out ingenuity Jeff solved problem stripping plastic covering battery re positioning batteries square bending lead-out wires re-wrap ping black tape obtained during lunch break Jeff wanted finish Erik figured way fit battery case special angle Others followed suit left switch harness hook installation hi-starting complete final assembly work Some Gliders readier others rapidly heading toward longawaited flight test Wed counted having pictures launchings Sunday supplement story Mike photographer showed up take outdoor photos finished near-finished models brought news story would appear next Monday no time arrange photo session official flight tests him grand finale would make papers after best-laid plans. old-timer heard grumble disappointment yesbut consolation story would out published Bulletin before Bend Aero Modelers mall show scheduled next weekend Giving students opportunity showing off Gentle Lady Gliders alongside RAM club members aircraft would make fitting end Learn Fly RC Airplanes class Flying would have await permission Bends fickle spring weather Travelers passing through central Oregon Bend reported have noticed looked skywards unusual flurry activity vicinity 27th Knott spring 1987 Beneath flock Gliders thermaling overhead some may have observed stood two figures necks craned eagerly upwards travelers come closer bent ear would have seen chief structor Mel smiling old-timer cohorts heard him pronounceWe landed em Now next school RC Soaring/Blakeslee Continued page 41 tackle learning task hopefully greater understanding knowledge chance success hook available Zenith Aviation Books see ad issue Wilshire Model Center $1595 word warning Id like pass along about book since written mainly British Soarers contains descriptions things dont have over hand-towing principal method launching Brit ain virtually unknown US Dave also describes BARCS British Association Radio Control Soarers rules competitions BARCS organizes Actually standard BARCS competition very interesting would worth try over First always fly man-on-mannot uniquebut fun part what call percentage slot objective fly longest eight- 10- 15-minute time period Continued page 133 September 1987 129 INTRODUCING ST D M VARIABLE SPEED THE NEW Ft rrIFI POWER CENTER 1 Variable Control Outlet Dremel & Brush Type Motor Tools 5 Outlets Handle Covering Irons Heat Guns & Soldering Tools etc 15 Amp Breaker W/Reset ted On/Off Switch Duty Power Cord H/Duty Steel Housing ting Tabs es May Vary USA Designed Engineered Modeler Serious Model BuiIdrs DEALER INQUIRIES ARE WELCOME WRITE OR CALL SEND MONEY ORDER OR CHECK TODAY NO CODs PLEASE SiI2Y* liNt tN1[tIIQIIDILIISI[S P 0 BOX 23492 MILWAUKEE WI 53223 354-8698 SPECIAL $3OO ntage & Handling WI Modelers MODEL #ABI-SKE add 5% tax RC Soaring/Blakeslee Continued page 129 everybody flight group ready blow horn start slot think air good launch hand-tow right away flight time starting release air doesnt look too good can wait until some body else launches see real cat-and-mouse game have ground horn blows end slot careful timing land ing required winner slot given 1000 points others slot given percentage 1000 points depending upon score landing points compared winners score BARCS competitions have several preliminary rounds top nine fliers go head-to-head flyoff determine winner Sounds exciting doesnt Reading books magazines other countries has advantage giving us some new interesting per spectives Progress Princeton Michael Selig wrote let everyone know about progress testing air foils low-speed wind tunnel Princeton University Michael listed names modelers making wing section models people have contributed time and/or money measurement systems said contributions have amounted almost $15000 body Michaels letter Since have such large number build ers will have some airfoils duplicated can examine effects model variability performance stage have orders out 12 models expect begin coming around same time will have system up running will split experimental program two phases first will measure lift drag previously mentioned airfoils Reynolds numbers 100000 200000 300000 results experiments will compared predictions Eppler Somers computer program design anal ysis low-speed airfoils recent ISES code two-dimensional viscous aero dynamic design analysis code developed Drela Giles MIT Eppler Somers code uses potential flow calculate inviscid velocity distributions Drag calculated using surface velocity dis tribution edge velocity integral boundary layer equations cannot account separation bubbles ISES code discretizes Euler equations describe outer inviscid flow couples boundary layer through displacement thickness Again integral boundary layer equa tion used closure models elab orate used Eppler Somers Fur thermore ISES code appears capture features separation bubbles therefore can account additional bubble drag preliminary work ISES code seems better lower Reynolds numbers Eppler Somers code second phase will design test least 10 new airfoils airfoils will de signed Eppler Somers code design mode comparisons between theory experiment first phase ex pect identify favorable features pressure distributions low-Reynolds-number airfoils should incorporated design new airfoils will screen newly designed air foil using ISES code predictions look promising will have built test wind tunnel way expect finish several good low-Reynolds-number airfoils RC Sailplanes effort raise funds additional equipment will make video entitled Low Reynolds Number Airfoil Testing Princeton University will describe basic aero dynamics airfoils low Reynolds numbers discuss detail particular facility per forming low-Reynolds-number airfoil measure ments VHS tape will roughly 40-minutes long available $25 donation amount $8 will go cost tape postage $17 will put toward equipment As final note though plan finish testing 30 airfoils end August ex periments will stop As long interest tests will continue way another PS think taking long time us answer letters youre probably right being swamped mail have questions about please write directly authors John Donovan & Michael Selig Dept Mech Aero Engi neering Engineering Quadrangle Princeton Uni versity Princeton NJ 085g winches John Wyss article F3B winches sparked considerable interest John Men ard Torrey Pines Club San Diego good enough write share findings building chib winches tested different types winches over four-year period including some $2000 F3B winches DGM motors monofilament line found must match drum size motor get best performance rebuilt Ford long-shaft motor found winch drum three-inch-diameter hub 6-in -diameter end plates 4 between end plates worked best drums must welded -in aluminum end plates testing blew up fabricated bolted together drum DGM motor new winches smooth strong launch almost well F3B winches much less cost have retired machinist named Ken Moore makes frames drums special turnarounds us builds five time because setup time turnaround fantastic included Kens $150 price has 2/2-in-diameter recessed pulley double ball bearings use two solenoids series because case gets stuck other will still open shut off power also use toggle safety switch case foot switch sticks have used same type wiring club winches over six years competition sport flying have runaway winch ball bear ing has machined fit end starter shaft however needle bearing very easy install some members winches have given great service just adding bearing alone parts use along prices Caner precision rebuilt Ford long-shaft starter #31 l5$30 Wells Mfg Co #F496 solenoids two wired series$12 Willys Electronic Sup ply safety switch #35-080 SPST on/off ISA 125 VAC$3 80 Foot switchSelectra Switch SS5 19$450 Selectras address PO Box 1585 Covina CA 91722 Needle bearing Torrington B1012$l87 Ball bearing 5/s-in shaft$3 25 Connectors$3l0 Cables$l 110 Aluminum drum frame turnaround$3059 Machining welding$ 150 sub-total$25021 Delco Dura Power 650 amp-hour battery$70 #15 #18 braided nylon linel 200 ft$ 10 total$33021 Thanks very much good information John anyone wants info suspect letter John SASE should trick Johns address 511 CalIe De Los Potros Bonita CA 92002 Confused about new frequencies new frequencies something RCers must know about understand Im going go column because much being written magazine Fred Marks George Myers others What want call attention September 1987 133 series four articles Flying Models magazine Bob Aberle Bob chairman AMAs Frequency Committee new fre quencies secured FCC articles June through September issues FM cover history frequency prob lems right through new equipment will required fly 20 kHz other 10 kHz commercial broadcasters different perspective always good think youll enjoy reading Bobs four articles Soartech #6 available Most Sailplaners have undoubtedly heard Soartech series jour nals edited published Herk Stokely Vir ginia Herk also writes Soaring column Flying Models magazine Herk puts out Soartech once twice year contains papers mainly technical nature appeal greatly scientists among us Once read can understand amount work Herk various authors put No 6 contains 154 pages includes Wind tunnel testing low-Reynolds-Number-airfoils Princeton University Michael Selig German/EnglishEnglish/German technical dic tionary RC Sailplane terminology Armin Saxer Optimization System RC Sail plane Armin Saxer Airfoil Families 12A 14A ISA RoIf Girsberger Equi librium Stability Load Tail David Fraser Friction Drag Pressure Drag Airfoils WH Phillips BASIC language program estimating weight RC Sailplanesbased Schlosser Max Cher noff New Developments plotting air foils home computers dot-matrix print ers k Anderson Pascal program automatic performance estimationbased VJIITAQE -C PLAN CONSOLIDATED PBY-5A CATALINA 9 FT WING SPAN ALL RIBS B PULL FORMtRS SHOWN ON PLANS1 PLASrIC ENGCOWLS sioBO PR CLEAR GUN BUSTERS $ 760 PR 4 LARGE PLAN SHEETS s $895 GET WING SPAN MODEL PBY-5A ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $ 550 PR ADD V 300 POSTAGE Saxer Simons programs Soartech No 2 Ed Karns Calculation Neutral Point Static Margin Ernie Currington Issue No 6 back issues available Herk very reasonable $5 per copy Herks address 1504 Horseshoe Circle Virginia Beach VA 23451 F3B news Did everyone notice three items important news Don Lowes Presidents Cor ner July issue AMA News maga zine First announced 1989 F3B World Championships would held countryprobably somewhere East Coast fact Soaring World Championships will just four World Championships will going same time other World Champs will Pattern Pylon Helicopter really excellent news because will give spectators chance see other model flying addition main interest other announcements F3B rules expected 1988 will proposal drop Speed task Dick Crowley April Plenary meeting said sup port dropping Speed task fairly unani mous appears nature F3B will change drastically below proposal West Germany eliminate Weak Link rule accepted Technical Committee majority still feel should some means limiting power imparted model during launch As yet nobody has able write rules winches would limit power also prevent people going megabuck exotic machinery Ground War call Europe Finally Builder Model rule dropped people flying com pletely finished Hans Muller planes little point claiming buildership just because installed radio F3B Speed task assume CLAM Plenary Session next April approves drop ping Speed task next question will affect F3B designs talking John Wyss about learned thinks designers will go larger planes higher-aspect-ratio wings aim will get higher launches windy weather improve L/D max imize number laps can flown four minutes allowed course Distance task Big planes have consider weak link John feels weak link actually pretty strong wont inhibit planes bit larger normal today next question will two-task F3B event attract competitors Rightly wrongly Speed task probably did scare off some beginners once fliers became accustomed F3B flying no fear task So elimination Speed will probably go down perception alteration rather real change way event flown As long talking about International Soaring Id like get something off chest Ive long thought about having International event Duration No Speed no Dis tance tasks elimination Speed will prob ably diminish demand Duration World Champs still think would have merit six-minute precision task now run F3B pretty much automatic considered task decent pilots dont lose points Duration-only event could use British percentage slot system would excit ing competitors spectators alike What Im really interested seeing what type ship would developed might much differ ent designs will seeing Duration/Distance event other hand might big polyhedral rudder/elevator plane New Wilshire catalog latest dated May 1987 Sailplane catalog available Wilshire Model Center Wilshire has established repu tation importing interesting Sailplanes around worldespecially Germany great blow owner Hans Weiss suddenly died about two years ago fortunately Mrs Maddy Weiss has kept shop going Im sure Hans would approve planes Wilshires current catalog too kits catalog list Id like name manufacturers have least plane represented Germany Air Jet successor Carrera Michael Beineke CHK Modell Eisman Mul tiplex kits radios accessories Graupner Robbe Rowing KDH Modellbau Great Britain Edmonds Micro Mold US Mark Grand Models Cheetah Models Bob Scaly Quality Fiberglass JM Glascraft Aeronautics Larry Hargraves Models Advanced Glider Concepts Sailplanes Santa Monica Magnum Hi Starts think partial lineup likely see local hobby store youre market kit moment Wilshire catalog lot fun just look over get familiar what available Sailplane-wise Send $250 Wilshire 2836 Santa Monica Blvd Santa Monica CA 90404 telephone number 213 8289362 Elec tries another $250 will get Wilshires cat alog electric motors kits etc just full Sailplane catalog Computerized airfoil plotting design pro 134 Model Aviation IGITIOIIII TREKS PROFILEVCOMBATVRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UKIFLOW & STIIDD hum Dliii Ful Ingredients Fo detailed broclum50C stamps/check CAROLINA-TAFFINDER 8345 Delhi Road Dept North Charleston SC 29418 803-553-7169 CATALOGOVER 50 PLANS $00 DEALERS WRITE WORLDWIDE SID MORGAN 13157 ORMOND BELLE VILLE 4BIII USA youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135