Just for the Fun of It

IT IS AS THEY SAY small world meets other modelers unlikely places once bumped Frank Heeb Nats FF Rubber winner year corner 42nd St Fifth Ave New York City Frank lived Midwest overtook Tom Mahon midday throng Times Square Tom lived Hawaii en countered Gordon Light Pennsyl vania now retired Maine working lower floor building roosted downtown Washington DC rye just call son Mike about chat retired Air Force man plane Texas chap has Quadra-powered Krackeijac early 1 960s 15 cabin modeL sending plans such big crates alas no good help gung-ho guys Sears McCorrison Thirty years ago met Sears over coffee New Jersey Turnpike both plowing homeward Philly Nats Sears no planes must have faces crowd trek Nats hits area comes across experimenter happy MG-8 designed Sears MOCorrison quiet world fiddling little Rubber Scale jobs seems never -to have wanted anything have ever suggested anything publication met just once short yearly letters have found various magazines home wherever live Sometimes hed enclose picture print some Peanut etc Searching through old folders plans came across prints Rose Para keets old-time home-builder bipe goes back days Heath NOTE 1945 model featured banana type airfoildeep root tapering flat tips 12 inches24 5 10 15 20 25 30 Long Such things have strange turnings An other routine note Sears includes Xerox copy photo some ancient Gassie So what Everybody ancient Gassies came suspect Sears master understatement pro saic cabin job 1945 conspic uous undercamber near fuselage flat-bottom tip tapered wing twin-tailed dihedraled stab Curious wrote Sears long let ter now theres three-view 40 942 9409 506070 8412 0009 Mc Bride 80 90 18 Model Aviation picture left shows Sears McCorrison 1945 Free Flight plane other picture Sears brother kneeling crate caught Bill Winters eye Note deep undercamber wing root flat bottom tip Text relates Sears used NACA medi linesnote designations drawing below wing sections develop own FF airfoils bottom early-1930s McBride median developed low-speed testing single-surfaced Indoor airfoils McBride see old Zaic Yearbooks Fascinating eh what Three-view left McCorrisons 37-year-old FF came before lovely Keith Laumer sport FF crates appeared magazines 1950s early 1960s 6 Right Our author Bill Winter new electric-powered parasol-wing model flying extremely welL First three flights 6Y2 B 13 minutes An IR 05 six Sanyo sub-C cells 1 1-7Y2 prop gives go Weighs 39 oz Bantam servos might come 37 minis 250 mAh receiver pack may enough two long ther mal flights Above can see aluminum heat sink Utasi Joiner proportional speed control visible forward torsion-type gear device printed June 1983 MA Bill says provides whole new dimension Electric flying Since controls shut-off full power within range Bills Silver 7 throttle stick no fine-tuning dothe controller worked right off Bills Electric slated future MA MAX SPAN 49 PROJECTEDN4— NO SCALE 49 ER GAS MODEL SAN DIEGO ORBITEERS POWER049 REED VALVE ENG NOTE NO VARIABLE SURFACE GEOMETRY ALLOWED CONSULT RULES ANY LENGTH -49 MAXN--- V Bill Montgolfier Hannan erstwhile Peanut Scale aficionado soothed quivering nerves concentrating captain hotair balloon leaves terra firma Warren Shipp captured memorable moment film admired exemplary teamwork negatives model possibly meant nothing anyone Sears will see drawing almost 40-year-old FF has Keith Laumer motif realism subtle touches although Laumer appeared magazines until years later came graph paper page strange air foilsheavily undercambered things would find 1920s 1930s Al lost word banana 2X 35X 7 BOX FUSE FROM SHEET Drawing courtesy Dave Linstrum MODEL AIRPLANE NEWS hj c Walt Mooney John Oldenkamp Cezar Banks Bill Booth Harry Steinmetz Wild Bill Netzeband pooled talents cook up roughly dozen FF fun events San Diego Orbiteersincluding 49er FF Gas sie seems have lit fire under Bill Winter see text says Herb Clukey based drawing Linstrums artwork MAN September 1983 19 What led unexplained photo Sears interest comments about Ken Willards use banana airfoils such Kens 1/2A Schoolmaster published some years ago RCM cause some modeler allowed us fly Headmaster thrilled combination high lift almostparachute landings good speed step lack needing trim changes cabin model throttle jockeyed MEN Trainer uses Willard theme Sears generation before So show some funny-looking bananas What Sears says cryptic Enclosed some attempts reproducing airfoils using NACA mean lines 0009 0012 thicknesses mean lines modified 6400 mean line original airfoils morerounded leading edge rather way NACA ones came out Also cluded using McBride B-7 mean line 0009 thickness ratio Thats note word Mc bride very early Zaic Yearbooks long before WW II will find almost laboratory-grade work Indoor airfoils may have low-speed tunnel testing extremely low Reynolds Num bers Essentially McBrideknown crafty Indoor types near arc single-surfaced course Full-scale data means zilch lightweight slowflying models isnt until ap proach -scale sizes youll concede famous real sections superior job Harold deBolt used near-arc famous Live Wires early 1950s An arc good anything else slow-flying smaller models thickness profile counts Since love look airfoil pro files whimsy perhaps what leads reproduction McCor rison section After ba nanas cup coffee generation letters reminded yet again nothing new Modelers work never see around us Dont wonder what might tell us know guys cant wait hear about exhilerating flying adventures Im no expert Vernon MacNabb obtained first FCC-approved exam ination-free frequency late 1940s 465 MHz kidded worth million dollars him once told large get-together want find out what public will stuff send Winter can done wrong will know about Kadet beat death last yearit has 120 flights left off late December fearfully gusty After long bouncy approachnevertheless nicely over fenceI thing think about crate came good airspeed about 8-ft high break glide flare gust tilted crate precariously made fatal error Assuming bad made relaxed Startled could restart gray matter Gosh said myself give anything aileron augured-in vertically Kadet still lives undamaged lieve sod course its ancient K&B 40 has outlived Bridi 40 Top Flite Cub sorts random junk now makes clanking noises Fellows dont ever let down attention youre inch touch-down Ive fallen trap least six times flying life Have noted very last signal wrong have four new crates threechannel Eaglet cant match servo arm length/movement throttle arm moving servo arm will clear side will easy funny thing have two Silver 7s can set abso lutely anything almost including morn ing coffee transmitter Both Continued page 22 NEW AIRFOIL BY AL SUGAR BASIC RECIPE I Take top notch airfoil EPPLER 2051 write down its ordinates a Add above ordinates Mike Barnes sensational MB352515 3 Divide ordinate sums 2 new set overage ordinates 4 Draw new airfoil up using new average ordinates..ergo HAPPY MED IUMI compromise between thick can get away strengthl mathematical perfection stout enough gorilla launches yet slippery enough high L/D functions RHl3%HlPT28% MCLl8%L0PT4l% FROM Dallas League Silent Flight newsletter airfoils heres will drive batty After reading tine print visu alize pairings some favorites wildly different ones hopefully purpose mind see what come up Mike Bames sensational airfoil substitute own miracle section play DNA chain Geiger counter comes handy too 20 Model Aviation few Bill Goughs fabulous fliers Above Left original Aero Sled outdoor twin pusher Above Right Brown CO2-powered all-sheet flier hit 100-ft ceiling still climb ing indoors Below Left Curtiss Robin rubber job built Comet kit plans 1930s Below Right old master 1965 vacuum-formed nifty f 02 gas rubber THE WORLDS FIRST PRODUCTION ELECTRIC RIG HELICOPTERt Now can enloy fascination challenge P/C trelicoptering own backyard whisper-quiet all-electric makes no mess costs lust pennies fly Semi-assembled br minimum construction time Includes 2 powerful 05 motors H-D speed controller pitch wrenches 22 ft electric tether cord Hook tether cord 1 2V car battery br about 1 hr trimming training before recharge youre ready strap optional airborne powerpack electric-fan sky Ishimasa Japan SPECS 39 Rotor 33 0/A Weight 25 lb tethered 35 lb in/Airborne pack Motors PS 540 5 x 2 Radio 4 Channel Power Tethered 12V 4OAH car battery Free 8 cell 96V NI-CAD pack RETAILCONDOR EH-1 semi-asom kit2499518900 Airborne nicad powerpack45003600 11SVAC overnight charger17951435 12VDC t5-min quick-charger69954995 Optional Bell-HillOr Assy45003600 HANDLING CHARGES Prepaid Orders.$250 COD Orders$475 Credit Cards$4 75 IvIs4Ii I1 Shop 1681 Phone orV ~xf CONDOR HOBBIES Showroom 17835 Sky Park Circle E ne CA 92714 Phone 71415581888 X 581490 ONIC 1111W Top bottom Std MAGIC MUFFLER #4060 NEW MAGIC MUFFLER #6065-RE Series S NEW MAGIC MUTE Great news Magic Mottler 83 ultra-quiet designs und new lower prices Now lust cant attord pass up increased power aijd extra silencing youll get amazing mini-pipe-muttlers Avail able 2-cycle engines side rear exhaust 1mm 15 thra 65 sports pattern aircraft pylon racers ducted fans helicopters cars & geared boats racing boats new Series S features additional silencing section built right pipe br significant noise reduction no power loss Magic Mute add-on no-loss' silencer br old Magic Mufflers tuned pipe 2/z additional ozs Tests Ross 60 ABC std Magic Muttler showed 75-78 db well below FAI maximums #1 525 #1525-H #1 525 Series S #1525-H Series S #4046-RE specity engl #4060 #4060 Series S #6065-RE #6065-RE Series S Magic Mute CONDOR 2295 2295 2695 2695 2495 2495 2895 2595 2995 1395 H denotes helicopter use RE Ills rear exhaust engines er types lit both side rear exhaust Applications & specifications chart request 22 Model Aviation set up other ships trim author ity am too pooped adjust pots time fly different crates also currently have World Expert two Fu tabas several Airtronics have flown Krafts Id happy great stuff out have four-channel rubber-ducky aileron servos turns wrong way Last night Mad Test Pi lot after call Merlin performed 5mm brain surgeryno correct first place Took new 40-powered Kracker jac Fredericksburg blown out Steve Kaluf obligingly went through monotony taxiing get little time engine fuselage cloth-wrapped hold down Tomorrow Tomorrow new 56-in low-para sol Electric LR 50 six-cell Sanyo sub-C pack 515 squares weighs 37 oz turns 1 l-7 Mad Test Pilot poised handlaunch brow hill tall grass Shangri-la prevents ROG Since used lifting tail dead sure CG should turned out 42% chord tad nose-heavy took bit up-trim batteries shifted 3/8 rearward launch took over brow hill Like runaway steam locomotive kept running legs churn ing avoid disaster Down hill across road next field bled off speedall elusive CG increasingly out front base like Leaning Tower said outran crate Three quick flights 545 pm61/2 8 12 minutes bad Srulls Electric Sparky night took off nearby narrow road like Falcon 56 Smooth silk climbed rock-steady leisurely great height cruised shut down started up again glidedon rails Weve tached both planes various props now get compare 5 15 squares 464 squares 4 oz less weight newand fun hear now motors supposed ly 12 cells will turn 9-6 prop 8 mm 10000 rpm 25s ex ample 12-6 7000 direct drive reduction drive can ignored such prop range unless want turn Quarter Scale-size props Imagination fails Ive puzzled years heavy smallish wing area late RC Special outsoared anything including Vagabond RC-Assist OldTimerand big Sniffer RC Special loading around 26-28 oz per sq ft high-drag crate have get bit altitude start Put circle trim grooves unattended passes through lift tightens turn quite FFC Charc Sstcm RIC world has waiting product 30 years dependable fast/slow rate charger will safely rapidly charge both receiver transmitter batteries 12V DC source automatically Cut back overnight charge rate 48 V receiver 96V transmitter packs Charges 500 mah receiver pack 85% less hour 34K40FFC Kit$2995 34K40C-FFC Assembled$3995 IAF 1/3IniW Box 511 E Higginsville MO 64037 816584-7121 Send.r complete cetalc~ -.e products available dealer order direct add $100 handling fee bitalways its right wing tipand just goes on up up Take out lift fly straight between clouds turns lift whenever its foundand goes round round its own have got know certainly havent able repeat characteristics anything else So tried Scott Christensen Top Elite designer amazing Metrick have am sure have run across airplanes just simply should perform way eventually did Scott begins Usually reverse truehow well knowthat dont perform way intended cant begin tell times have designed perfect airplane its intended use have compromises gather forces ruin yet another dream would suspect Author blankety crate has correct amount dirty relationship appropriate amounts area weightand working per fect concert French-curve airfoil produce airplane should what does course always MAFT quotient MAFT number assigned given aircraft design always ar rived judgmentally since mathe matics involved would tax abilities IBMs latest computer men tion lifetime work just writing ram number assigned al ways ranges 10 ultimate being total failure Oftentimes Scott goes given design award ed two MAFT numbers collec tively flying buddies course yourself case its best average two interest continuity way MAFT stands Mystical Affinity Thermals Seriously Scott winds up ad vice fly enjoy dont ask whybecause answer very probably does exist least form can understand sounds like gal said Dont ask questions Reading between lines youll find Scotts Philosophy Infinitely Expand able call PIE factor words compromises what design real model Wright Flyer latest airliner about aerodynamic tomes dont guarantee model will fly compromises best intelligent guessesa pinch pinch Dihedral vertical tail two combined factors Mix profile area wing position thust line wheel areas etc allow simmer may never answer have faint clues Such crates still-air floaters have dynamic quality rather like Continued page 133 Discriminate Scale Fliers Demand Dave Platti Im perfectionist kits prove reputation finest models RC scale has founded upon careful attention detail aperiod over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly e*t Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 THE ULTIMATE 3rand hold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ______________$179 New 1/4 Scale Pilot4$139 Supplied unpaint-Ale ed comes in-Available struction booklet1/5 116 scale WorldRetracting $30 Pilots fullLanding Gear War II FighterNow Strengthened figure625heavier ships complete system $139 110W TO ORDERDrrect manulaciurer no mark-upi Write call. accept check mosey order Master charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept loreign orders pay Ireight inlormation model send sell addressed envelope nave Dlatt nnodels inc NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nor at5iiaed will vvy viher cvmpvvy GRAPHITE ULTRA-PLY Carbon laminating material strengthening tjJes models LIGHTER THAN BALSA STRONGER THAN FIBERGLASS $249 SittO catalogue ox 31228 lndpls IN 46231 BUILDS WING STAB & FU 5 CHOICE OF MODELERS THE WORLD OVER Standarduse-Jig00 Full House $7995 Wing JigK it$10Wing & Fuse Jig Ajustojig CoR R 1 Box 673Nobleoville Indiana 46060317] 877-2223 Whether consider yourself novice expert model builder A-i usto Jig will improve aircraft construc tion e valuable time bargain A-Justo-Jig holds major com ponents proper alignment entire unit will rotate 36O permit fit glue plank shape sand con venient position No messy glu ing over plans waiting dry before beginning opposite side A-Justo-Jig will adjust rib former spacing lets build-in wing dihedral strong warp-free construction TO USE simple template rib indexing tool included locate drill holes rib alignment rods easy preparation takes approx 15 minutes average wing A-i usto-Jig builds em better Ask favorite hobby dealer Youll glad did arantee use time 5 LastCarry small first aid kit car never know friend may need got caught friend gashed finger several weeks ago now have one' Have safe month John Preston 7012 Church VA 22042 Elsira Ct. Falls Fun/Winter Continued paqe 23 Slope Soarers wheel around track hands-off trimmed circle rock-steady skim along higher airspeeds case airfoil smallish wing area about 71 perhaps 81 aspect ratio thick al 15% dihedral five degrees CG fairly far forward three-channel controls no ailerons get steady turn on al titude loss doesnt spiral down less dihedral seems require repeat edly touching stick corrections Fin rudder position respect rolling axis aircraft magi cal mystical ingredient After lot vertical tail area above axis has leverage increase turn bank lower greater yaw effectiveness excessive coupling dihedral increase bank angle think Sal Taibis Spacer FE vertical tail bottom plane Vertical tail shape can concentrate area closer rolling axis Pattern people crate no wash outwhich sometimes spelled trouble variable gusty crosswind take offs Aloft held nose high edge stall right tip always would break rock crate straight flight strong updraft hit wing tip would tend stall its angle attack suddenly increased forcing ship turn quickly lift Always rightnever leftand speed would pick up requires stronger lift once has results out proportion expectations slow up nurse lift merely sinks through thinks ballasted Sailplanes cant conclude thick airfoil panacea 26-28 oz loading case high-lift section happens good match crate built lightly should have airfoil would have thin ner what happens airflow over airfoil changes angles load ings speeds size plane wander Dismal Swamp Reynolds Number flight purposethere purposes everything changes according what want flyit probable size roughly Eaglet down two turbulator spars rather sheet skinning back front spar could yield better results lighter weights both Eaglet parasol Electric mentioned have two turbulator spars am interested extended durations Both ships rather lightweight lower air speeds spars seem help Merely 1/8 squares small EF Rubber job seems have duration let rear edge leading edge act turbulator smooth rib con tours sheeting After great Rubber jobs came out Cleveland OHKorda Lanzo dozens oth ershad multiplicity light spars bending rearward match curved planform shapes outer panels Id prefer have answers wouldnt adventure P-49 Power eventonce bumblebee John Oldenkamp made Mad Test Pilot made first flight new 40/60 Krackerjac 6 ft K&B 40 just yesterday would have heard about bumblebee Krack erjac incidentally proved bit differ ent stab bottom short-coupled fuselage blast power retarding clump grass brings up Continued page 136 EeiFrhgpI 99-* KIT BUILDERS Lighten strengthen sent project factory processed graphite gtass balsa laminates * SCRATCH BUILDERS Design high-tech composites ultimate strength weight components yea Itat already familiar wITh MAGNALITE composItes try sample kIt includes CF 007 CF 014- Rigid graphite sheets CF 250 t /4 end grain balsa graphite laminate 08 125- t/t end grain balsa glass laminate GB 250- 1/4 end grain balsa glass laminate Graphite Rods- 075 1/4 diameter Brochore- Shows use composite Pefliat tinting st sizes prices available CF007n24S gog CF 014 5' o24StR00 CF2506o12 $1300 GB125 120 12 700 Ijromotinnai GB25012nt2$ 850 j saleprice Graphite1/4 n 24 51800 Rnds 075' n36' $455 Mitlodpiher110$ 750 Glass Balloons 1 gal5 6 50 New Sampie Kit 500 Rrnchure 5 100 VISA MASTERCARD COD CHECK OR MONEY ORDER Florida ResIdents Add 5% Sales Tao Add $300 Possage ling Salts ano Inlormation CENTRAL FLORIDA HOBBIES 4g1 State ho 434 monte Springs FloriOa 32701 Phone 3051 788-3718 Sam Leonard Proprietor September 1983 133 Tired Being Shot Down SUPER SERVO GARD Controls Throttle Cant * Constantly monitors receiver interference another trans mitter outside sources instantly reducing throttle idle until interference clears * Constantly monitors flight battery pack voltage instantly reduces throttle idle allowing time safely land * Responds instantly loss radio signal throttling back idle alerting flight problem * Affects throttle giving complete control other servos safe landing * Minimizes crash damage caused signal loss ending full force smash-ups Endorsed IMAAShow Team required show model flown SPECIFICATIONS Size KPS 1411 Servo Case Power 17 ma Volt Cut-Out Point 46 volts Pulse Width Range Adj 0628 milliseconds Systems 3 4 wire Temp Range 00 1400 F Weight 12 oz Price $4795 Postpaid Specify connector type positive negative pulse ordering RF Enterprises 106 N Main St. Arlington OH 45814 419 365-5056 APPLIED DESIGN CORPORATION 738 Penn St El Segundo CA 90245 MINI ER ADJUSTABLE TENSION HAND BELT SANDER FIRMLY HOLDS PAPER FOR EASIER SANDING Padded hats curves LIeld$220 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFloe Garnet AND EFFORT $1 40 SANDING BELTSAsold Water Preel --TEE &~zJALUMINUM EXTRUSION SANDING BLOCK ler use dlii RUFF-STUFF Self-adhesIve sand paper large True Serlace WutWurOul lllncIiS235 Handy Use 22 luck $350 RUFF & STUFF SELP ADHESIVE SHEET MANE YOUR OWN SPECIAL SANDPAPER Vt SANDING SHAPES No messy ghe er drying till Medium Flee r Flu N & SAW $625 COMPACT 10 inch HACK SAW ___SAWS ANYTHING ANYWHERE Saw has rogged die-cast Iraiu wIth cemlertable chip-preel plaslic hisen handle Receding flue aed ad estahle B blade glees geedwerk ucceso Cuts mend plastic metal sod HARDENED MUSIC WIRE Xtr blades-3/199 Fun/Winter Continued froni oaoe 136 stab delicately takes fullup elevator until wheels go light takeoff before can relax stick So have go 3-in 4-in wheels shim sheet-metal taildragger gear tilts forward stays level approach lowest idle fooled pilot fully retarding throttle trim actually reached cut-offand crate still almost over ran strip An ex-jet-jockey reminded bee buzzed around cock pit desperation guy took ship up 45000 dumped cockpit pressure expecting bee dedicate its life science continued fly about Thin air neither impaired bees ability aerobatics thrive human would have bel lied-up oxygen After landing canopy opened bee flew joyfuliy away 49er bumblebee probably saw three-view basic 49er proposal Dave Linstrums column MAN ewhere now Since modelers read ali mags can turn com ment Christmas Eve last John 01denkamp summed-up proposed fun club rules San Diego Orbiteers 1983-84 seasons copyrighted no less gotta share wrote John No answer required nor am asking write anything about column However think have achieved least minor break through getting up new viable Power classone incidentally will adapt virtually RC-assist RC sport RC-whatever What happened John ran local New Events Committee got together Oldenkamp Harry Steinmetz co-chairs plus Biil Wild Bill Netzeband Cezar Banks Bill Booth John Hutchinson multi-years in-grade including RC FF CL Author YOU have picnic long enough galaxy thinkers boggles mind preliminary de liberations yielded Baseline Gas Class felt could handle problems aspirations Perfessor Walt Mooney Banks got together work same aerospace facility Mooney got real jolt out whole thing added two bits call 49er Forty Niner whatever max power 049 reed valve max dimension 49 mini mum weight 490 grams 172 oz plus fuselage enclose box 2 x 31/2 x 7 Voila may have something after rate Mooney fram ing couple prototypes show-andtell annual banquet Author 1982 remember go ing cover fly buggers soon possible Author re member plea John upon new RC interest abandon ingeni ous FE sport flair both rubber gas Johns PS reassuring RC proj ect dead 49er gets two fuse lages Total-time/motor-run ratios noth ing new just fun logi cal concept going back 40 50 years never has captured wide attention late great Jim Walker preached idea nationally early 1930s such towering genius among wild things thought nothing flying three throttled CL models simul taneously suggested anything people listened just listened far out figured Jim also thought crates stay field per haps tied some distance meas urement Ground Zerowhich would have too much bother knows original rules proposal stated 120-sec max flight duration unlimit ed engine run scoring determined Flight Time Seconds over Engine Run times 100 highest score two official flights counted 15% bonus given unassisted two-main wheel-ROG launches love own interest FF having faded ROG rule abandoned Javelin launches leave cold have realize hot engines came climb speeds went Mach really needed conflicting adjust ments handle takeoff etc crate leaped off leaned over Thats tough makeshift runways pain So heres enjoyable ROG bonus 049 does need end-to-end plywood rolling strip tar paperthe way Admiral Nel son loved fly Herb Clukey gild lily Dave Linstrums nice drawing Theres front view added since box created flat behind cabin Herb curved top outline aft cabin note negative lifting tail drawn resultant severe angular difference Now want sportfly simple RC emphasis pri mary training glide soaring allowing enlargement own fun note lifting stab has lots area has lots airfoiled lift CG probably lies 75% wing chord have fondled drawing months RC would wise make stab airfoil thickness 50% wing thickness terms its own chord vertical tail could placed above stab position remainder aft fuselage lopped off Since FE intended steep climb probably turning such de viations RC will superior 136 Model Aviation Add 20% postage Send 25C catalog wing moved back its leading edge chord-length behind rear prop washer still may balance 50% chord use electric power would smart lay batteries fuselage floor adjusting rearward necessary flat streamlined stab resorted CG may have placed 40% perhaps 33% chord aft LE Pure guessing want wander further afield improve RC turn characteristics getting super FF gliding mode youll want shorten rather long tail moment arm shown threeview span aspect ratio given reasonable beginning point meas ure half-span midpoint wing chord midpoint stab chord drawing now presented would move stab forward almost one-chord length its own short-nosed job have moved wing back have about same set up longer nose easier balance flexibility great purist would build charming little buggy FE wanted control pre vent chasing provide lazy mans recovery system would emALL SHEET ONE PIECE AAA GRADE KILN DRIED SANDED TO CLOSE TOLERANCES PED 100% Light 4-6lb361/8x3453/l6sq.173/8x11/246 1/16x349 1/16x448 1/4sq26 1/2x270 3/32 x 356 3/32 x 456 1/4 x 3/830 1/8 x 367 1/8 x 466 3/8 sq.37 BalsaTriangles 3/16 x 37648 Sticks36 1/4 x 385MatchedAdd 40%1/4 x 1/425 3/8x3115Sheets423/8x3/830 1/2x3139 3/32x4100NEW1/2x 1/235 1/8 x 4108 Basswood & Pine 3/4 3/445 Sheets 48 3/16x4120Sticks For1 xl55 x349 1/4x41311/4 Scale x3 Balsa Sticks 36Lite Ply48 82 1/16x1/4091/8x6150 3/32 11410 Birch Dowels 36 1/8 12300 124 1/8sq11809 1/8x114113/16113PlyBirch48 118x11218 11414 1/64x12525 1/32x12425 76316 sq.11Send addressed1/16 12435 .lI4sq16 1 11221 stamped envelope 1/8 12450 1 sq.27for catalogue 134 3/8 1/232listing sires5Ply Birch48 3/32x12570 225lI2sq361/Ba 12585 Pine Sticks36TrailingEdge3/16 12585 Sheets 30 lISsq.1336l/4a12600 331 118x1/416 1/4x132 337 1/8x3/820 5/16x11/439 ploy tiny receiver mini servo rudder minimum use scares non-F Fers install sec ond mini servo small elevator just trim required Once see FE circling lift youll hooked Any old-time EFer feels nostalgic about airplane better have de thermalizer reliable engine run control 49er rules say no timer San Diego Orbiteers include 10 other novel fun events summary rubber CO-2 Arm-pow ered What havent heard about Arm last round-up Ive fallen love object affection No SAM 35 Year Book roughly 6 x 8 stiff-pap er-covered 42-page excluding two fold-out plans collection marvel ous low-key historical articles Iwas-there flair numerous twoand three-view drawings manner crates stone-age up what fondly term old-timer age scads meaningful pictures choice selection subjects experi ence just fabulous copy read able fun informativea trip moon Ones mind plays games wonderful planes depicted bunch mysterious Englishmen put thing together Charming arti cles long short sometimes bit techni cal typewriters ran amuck thing alone worth price admis sion 23-page article C E Bowden Charlie Grant England con sidered opus limited personal story doubt man alive could write something intriguing informa tive master has spoken began year birth MAP friends England gave SAM 35 Year Book terse review Pos sibly major publishing company relatively unlimited resources salaried manpower long time no longer produced hardbacked Aeromodeller Annual would bit testy Like critics everywhere reflect vision what would con sider perfect Perfection can boring no such animaL SAM 35 flew high dont perceive did waxen wings got too close sun ama teurs have managed five-star entertainment Amateurs yesthey neglected publish either price addressCont p 138 CHUCK WOOD Hank Clark WOOD CHIP 5RORTAE HEY-THERECUcKS ".WJ$HOLYSOXJIGGES- cucicGET USDTOI-IIM BOYS PILOT IM HIS FB-4tz-7pLOOkATAt.L- CMOJ NOW5 CUP%~THOSE ADcET5 I-4A-HA--ETHE.JEyTr HE OFTENTAiES EEHERE ONE M/NUT-GONE IBLIKD HOW HES RtG2GONE\ \\-IATARE -YEAH CAPT WE WITHOUT JLISTSAWYOU -____PILOT /NTHEPE THEAIRPLANE -PLAIN As DAY7 AL NOT S V WITH HIM 000 FELLAS September 1983 137 find regular issue SAM 35 Speaks editors name David Baker 22 Ellington Rd Muswell Hill London NlO 3DG England long-hand slip sample says American modelers may obtain copy $700 Perhaps youll want inquire first perse vere Stop must Bill Winter 4426 Altura Ct Fairfax VA 22030 Two-Meter/Jolly Continued page 28 Mike Regans model could des cribed typical Valley competition Sailplane features fiberglass fuse lage incredibly strong wing foam spruce balsa construction Mike Bame 15% airfoilalways good taste familiar current F3B scene coun try will recognize similarity Alex Bowers Tai Tai special interest Mikes model has conventional polyhe dral geometry leads wonder ailerons really necessary high-speed Sailplane Close Regans heels another SFVSF member Mike Bame fin ished second Mike flew aileroned version Sailplane flown Regan Mike Bame very innovative modeler responsible developing materials techniques used fellow club members Speaking SFVSF no sur prise see its members claim five six top places clubs total com mitment advancing Sailplane tech nology has given members both models experience necessary well multi-task contest cause great depth talent SFVSF can muster members club will certainly strong force contend long choose compete effort away winch advantage SFVSF construc ted six identical winches use contest course gave contestants equal chance good launch memories have contest sticks mind good times generated meet Everyone came have good time did fact have good time anyone didnt should perhaps think about compete hobby/sport Personally enjoy multi-task Soaring other phase RC Sail plane flying concept TwoMeter World Cup allows others like myself enjoy thrill chal lenge closed-course racing something possible more-usual Sailplane gatherings members Modesto RC Club SFVSF particularly Mr Hanson congratulations job well done looking forward Fifth Two-Meter World Cup See Luton Minor/Mathews Continued page 37 turning 9 X 6 prop Idle marvelously slow reliable mid-range excellent adjustments breeze Rigging photos illustrates technique Start nylon bolt threaded block Measure block up both wings exactly same height off board wing bolt screwed Run string tail post exactly same point both wing panels keep adjusting fore aft position grabber loosen ing clothespins until exactly dimension determines left right thrust must zero-zero Once wing panels equal dihedral left-right grabber epoxied clamped against wing structure Avoid later necessity raising lowering wing incidence carefully measuring against flat fuselage top time After epoxy has cured unit still jigged glue steel straps strut slots 5-mm epoxy ends should screwed pre-drilled holes Rigging difficult complex However requires patience care dont hurry Covering Finishing has Mono Kote wing tail surfaces Sig Koverall fuselage Koverall heat-sealed over Coverite Balsarite heat-shrunk Three coats clear nitrate dope followed two sprayed coats Pactra Poly-U fuselage wing leading edge trim Poly U Numbers EZ-Stik vinyl6 wing 4 fuselage pilot figure Williams Bros 2i-in standard unit painted paint plastic models Banner wheels go nicely model Flying Ground handling takeoff roll must seen believed thing gets up its mains will run straight down runway mile Apparently lowto-the-ground fuselage high-up-in-theair wing combine produce truly extra ordinary handling Luton Minor doesnt need rudder stabbing steerable tail wheel get going straight down runway Just point direction want advance throttle other hand tracks darn well difficult turn around taxiing cares climb-out function wing engine intended climb prop rather uses speed climb wing steep pull-up such clear deck portion touch-and-go pre pared witness strange phenomenon 138 Model Aviation Power Soar New Heights self-addressed stamped envelope catalog ap plication notes Leisure 11 DeerspringllrvinelCA 92714 LT-50 Electric Motor 01 Cu equivelent gas engine displacement / CANNON SYSTEMS 13400-26 Saticoy Str.t North Hollywood Calif 91605 PIoo 2131764-1488 SUPER-MICRO FLITE PACKS Worlds Smallest R Units will work Standard AM Transmitters other Makes Equip aircraft SUPER MICR~Ick Flite Pack inc ud MICRO Rx 54oz- gr MICRO Servos 47 oz-~ ce BATT 100 nelsCASH PRICE 22z~Thgr$14995 33oz962 gr18350 43 BBoz 1101 gr21695 Shipping $450 27 72 MHz other freqs $1000 Calif add Sales Tax Brochure 7& US $200 Foreign CASH DISCOUNT PRICES SHOWN Credit Cards 5% VISAMore 20% Deposit Req d f COD s

IT IS AS THEY SAY small world meets other modelers unlikely places once bumped Frank Heeb Nats FF Rubber winner year corner 42nd St Fifth Ave New York City Frank lived Midwest overtook Tom Mahon midday throng Times Square Tom lived Hawaii en countered Gordon Light Pennsyl vania now retired Maine working lower floor building roosted downtown Washington DC rye just call son Mike about chat retired Air Force man plane Texas chap has Quadra-powered Krackeijac early 1 960s 15 cabin modeL sending plans such big crates alas no good help gung-ho guys Sears McCorrison Thirty years ago met Sears over coffee New Jersey Turnpike both plowing homeward Philly Nats Sears no planes must have faces crowd trek Nats hits area comes across experimenter happy MG-8 designed Sears MOCorrison quiet world fiddling little Rubber Scale jobs seems never -to have wanted anything have ever suggested anything publication met just once short yearly letters have found various magazines home wherever live Sometimes hed enclose picture print some Peanut etc Searching through old folders plans came across prints Rose Para keets old-time home-builder bipe goes back days Heath NOTE 1945 model featured banana type airfoildeep root tapering flat tips 12 inches24 5 10 15 20 25 30 Long Such things have strange turnings An other routine note Sears includes Xerox copy photo some ancient Gassie So what Everybody ancient Gassies came suspect Sears master understatement pro saic cabin job 1945 conspic uous undercamber near fuselage flat-bottom tip tapered wing twin-tailed dihedraled stab Curious wrote Sears long let ter now theres three-view 40 942 9409 506070 8412 0009 Mc Bride 80 90 18 Model Aviation picture left shows Sears McCorrison 1945 Free Flight plane other picture Sears brother kneeling crate caught Bill Winters eye Note deep undercamber wing root flat bottom tip Text relates Sears used NACA medi linesnote designations drawing below wing sections develop own FF airfoils bottom early-1930s McBride median developed low-speed testing single-surfaced Indoor airfoils McBride see old Zaic Yearbooks Fascinating eh what Three-view left McCorrisons 37-year-old FF came before lovely Keith Laumer sport FF crates appeared magazines 1950s early 1960s 6 Right Our author Bill Winter new electric-powered parasol-wing model flying extremely welL First three flights 6Y2 B 13 minutes An IR 05 six Sanyo sub-C cells 1 1-7Y2 prop gives go Weighs 39 oz Bantam servos might come 37 minis 250 mAh receiver pack may enough two long ther mal flights Above can see aluminum heat sink Utasi Joiner proportional speed control visible forward torsion-type gear device printed June 1983 MA Bill says provides whole new dimension Electric flying Since controls shut-off full power within range Bills Silver 7 throttle stick no fine-tuning dothe controller worked right off Bills Electric slated future MA MAX SPAN 49 PROJECTEDN4— NO SCALE 49 ER GAS MODEL SAN DIEGO ORBITEERS POWER049 REED VALVE ENG NOTE NO VARIABLE SURFACE GEOMETRY ALLOWED CONSULT RULES ANY LENGTH -49 MAXN--- V Bill Montgolfier Hannan erstwhile Peanut Scale aficionado soothed quivering nerves concentrating captain hotair balloon leaves terra firma Warren Shipp captured memorable moment film admired exemplary teamwork negatives model possibly meant nothing anyone Sears will see drawing almost 40-year-old FF has Keith Laumer motif realism subtle touches although Laumer appeared magazines until years later came graph paper page strange air foilsheavily undercambered things would find 1920s 1930s Al lost word banana 2X 35X 7 BOX FUSE FROM SHEET Drawing courtesy Dave Linstrum MODEL AIRPLANE NEWS hj c Walt Mooney John Oldenkamp Cezar Banks Bill Booth Harry Steinmetz Wild Bill Netzeband pooled talents cook up roughly dozen FF fun events San Diego Orbiteersincluding 49er FF Gas sie seems have lit fire under Bill Winter see text says Herb Clukey based drawing Linstrums artwork MAN September 1983 19 What led unexplained photo Sears interest comments about Ken Willards use banana airfoils such Kens 1/2A Schoolmaster published some years ago RCM cause some modeler allowed us fly Headmaster thrilled combination high lift almostparachute landings good speed step lack needing trim changes cabin model throttle jockeyed MEN Trainer uses Willard theme Sears generation before So show some funny-looking bananas What Sears says cryptic Enclosed some attempts reproducing airfoils using NACA mean lines 0009 0012 thicknesses mean lines modified 6400 mean line original airfoils morerounded leading edge rather way NACA ones came out Also cluded using McBride B-7 mean line 0009 thickness ratio Thats note word Mc bride very early Zaic Yearbooks long before WW II will find almost laboratory-grade work Indoor airfoils may have low-speed tunnel testing extremely low Reynolds Num bers Essentially McBrideknown crafty Indoor types near arc single-surfaced course Full-scale data means zilch lightweight slowflying models isnt until ap proach -scale sizes youll concede famous real sections superior job Harold deBolt used near-arc famous Live Wires early 1950s An arc good anything else slow-flying smaller models thickness profile counts Since love look airfoil pro files whimsy perhaps what leads reproduction McCor rison section After ba nanas cup coffee generation letters reminded yet again nothing new Modelers work never see around us Dont wonder what might tell us know guys cant wait hear about exhilerating flying adventures Im no expert Vernon MacNabb obtained first FCC-approved exam ination-free frequency late 1940s 465 MHz kidded worth million dollars him once told large get-together want find out what public will stuff send Winter can done wrong will know about Kadet beat death last yearit has 120 flights left off late December fearfully gusty After long bouncy approachnevertheless nicely over fenceI thing think about crate came good airspeed about 8-ft high break glide flare gust tilted crate precariously made fatal error Assuming bad made relaxed Startled could restart gray matter Gosh said myself give anything aileron augured-in vertically Kadet still lives undamaged lieve sod course its ancient K&B 40 has outlived Bridi 40 Top Flite Cub sorts random junk now makes clanking noises Fellows dont ever let down attention youre inch touch-down Ive fallen trap least six times flying life Have noted very last signal wrong have four new crates threechannel Eaglet cant match servo arm length/movement throttle arm moving servo arm will clear side will easy funny thing have two Silver 7s can set abso lutely anything almost including morn ing coffee transmitter Both Continued page 22 NEW AIRFOIL BY AL SUGAR BASIC RECIPE I Take top notch airfoil EPPLER 2051 write down its ordinates a Add above ordinates Mike Barnes sensational MB352515 3 Divide ordinate sums 2 new set overage ordinates 4 Draw new airfoil up using new average ordinates..ergo HAPPY MED IUMI compromise between thick can get away strengthl mathematical perfection stout enough gorilla launches yet slippery enough high L/D functions RHl3%HlPT28% MCLl8%L0PT4l% FROM Dallas League Silent Flight newsletter airfoils heres will drive batty After reading tine print visu alize pairings some favorites wildly different ones hopefully purpose mind see what come up Mike Bames sensational airfoil substitute own miracle section play DNA chain Geiger counter comes handy too 20 Model Aviation few Bill Goughs fabulous fliers Above Left original Aero Sled outdoor twin pusher Above Right Brown CO2-powered all-sheet flier hit 100-ft ceiling still climb ing indoors Below Left Curtiss Robin rubber job built Comet kit plans 1930s Below Right old master 1965 vacuum-formed nifty f 02 gas rubber THE WORLDS FIRST PRODUCTION ELECTRIC RIG HELICOPTERt Now can enloy fascination challenge P/C trelicoptering own backyard whisper-quiet all-electric makes no mess costs lust pennies fly Semi-assembled br minimum construction time Includes 2 powerful 05 motors H-D speed controller pitch wrenches 22 ft electric tether cord Hook tether cord 1 2V car battery br about 1 hr trimming training before recharge youre ready strap optional airborne powerpack electric-fan sky Ishimasa Japan SPECS 39 Rotor 33 0/A Weight 25 lb tethered 35 lb in/Airborne pack Motors PS 540 5 x 2 Radio 4 Channel Power Tethered 12V 4OAH car battery Free 8 cell 96V NI-CAD pack RETAILCONDOR EH-1 semi-asom kit2499518900 Airborne nicad powerpack45003600 11SVAC overnight charger17951435 12VDC t5-min quick-charger69954995 Optional Bell-HillOr Assy45003600 HANDLING CHARGES Prepaid Orders.$250 COD Orders$475 Credit Cards$4 75 IvIs4Ii I1 Shop 1681 Phone orV ~xf CONDOR HOBBIES Showroom 17835 Sky Park Circle E ne CA 92714 Phone 71415581888 X 581490 ONIC 1111W Top bottom Std MAGIC MUFFLER #4060 NEW MAGIC MUFFLER #6065-RE Series S NEW MAGIC MUTE Great news Magic Mottler 83 ultra-quiet designs und new lower prices Now lust cant attord pass up increased power aijd extra silencing youll get amazing mini-pipe-muttlers Avail able 2-cycle engines side rear exhaust 1mm 15 thra 65 sports pattern aircraft pylon racers ducted fans helicopters cars & geared boats racing boats new Series S features additional silencing section built right pipe br significant noise reduction no power loss Magic Mute add-on no-loss' silencer br old Magic Mufflers tuned pipe 2/z additional ozs Tests Ross 60 ABC std Magic Muttler showed 75-78 db well below FAI maximums #1 525 #1525-H #1 525 Series S #1525-H Series S #4046-RE specity engl #4060 #4060 Series S #6065-RE #6065-RE Series S Magic Mute CONDOR 2295 2295 2695 2695 2495 2495 2895 2595 2995 1395 H denotes helicopter use RE Ills rear exhaust engines er types lit both side rear exhaust Applications & specifications chart request 22 Model Aviation set up other ships trim author ity am too pooped adjust pots time fly different crates also currently have World Expert two Fu tabas several Airtronics have flown Krafts Id happy great stuff out have four-channel rubber-ducky aileron servos turns wrong way Last night Mad Test Pi lot after call Merlin performed 5mm brain surgeryno correct first place Took new 40-powered Kracker jac Fredericksburg blown out Steve Kaluf obligingly went through monotony taxiing get little time engine fuselage cloth-wrapped hold down Tomorrow Tomorrow new 56-in low-para sol Electric LR 50 six-cell Sanyo sub-C pack 515 squares weighs 37 oz turns 1 l-7 Mad Test Pilot poised handlaunch brow hill tall grass Shangri-la prevents ROG Since used lifting tail dead sure CG should turned out 42% chord tad nose-heavy took bit up-trim batteries shifted 3/8 rearward launch took over brow hill Like runaway steam locomotive kept running legs churn ing avoid disaster Down hill across road next field bled off speedall elusive CG increasingly out front base like Leaning Tower said outran crate Three quick flights 545 pm61/2 8 12 minutes bad Srulls Electric Sparky night took off nearby narrow road like Falcon 56 Smooth silk climbed rock-steady leisurely great height cruised shut down started up again glidedon rails Weve tached both planes various props now get compare 5 15 squares 464 squares 4 oz less weight newand fun hear now motors supposed ly 12 cells will turn 9-6 prop 8 mm 10000 rpm 25s ex ample 12-6 7000 direct drive reduction drive can ignored such prop range unless want turn Quarter Scale-size props Imagination fails Ive puzzled years heavy smallish wing area late RC Special outsoared anything including Vagabond RC-Assist OldTimerand big Sniffer RC Special loading around 26-28 oz per sq ft high-drag crate have get bit altitude start Put circle trim grooves unattended passes through lift tightens turn quite FFC Charc Sstcm RIC world has waiting product 30 years dependable fast/slow rate charger will safely rapidly charge both receiver transmitter batteries 12V DC source automatically Cut back overnight charge rate 48 V receiver 96V transmitter packs Charges 500 mah receiver pack 85% less hour 34K40FFC Kit$2995 34K40C-FFC Assembled$3995 IAF 1/3IniW Box 511 E Higginsville MO 64037 816584-7121 Send.r complete cetalc~ -.e products available dealer order direct add $100 handling fee bitalways its right wing tipand just goes on up up Take out lift fly straight between clouds turns lift whenever its foundand goes round round its own have got know certainly havent able repeat characteristics anything else So tried Scott Christensen Top Elite designer amazing Metrick have am sure have run across airplanes just simply should perform way eventually did Scott begins Usually reverse truehow well knowthat dont perform way intended cant begin tell times have designed perfect airplane its intended use have compromises gather forces ruin yet another dream would suspect Author blankety crate has correct amount dirty relationship appropriate amounts area weightand working per fect concert French-curve airfoil produce airplane should what does course always MAFT quotient MAFT number assigned given aircraft design always ar rived judgmentally since mathe matics involved would tax abilities IBMs latest computer men tion lifetime work just writing ram number assigned al ways ranges 10 ultimate being total failure Oftentimes Scott goes given design award ed two MAFT numbers collec tively flying buddies course yourself case its best average two interest continuity way MAFT stands Mystical Affinity Thermals Seriously Scott winds up ad vice fly enjoy dont ask whybecause answer very probably does exist least form can understand sounds like gal said Dont ask questions Reading between lines youll find Scotts Philosophy Infinitely Expand able call PIE factor words compromises what design real model Wright Flyer latest airliner about aerodynamic tomes dont guarantee model will fly compromises best intelligent guessesa pinch pinch Dihedral vertical tail two combined factors Mix profile area wing position thust line wheel areas etc allow simmer may never answer have faint clues Such crates still-air floaters have dynamic quality rather like Continued page 133 Discriminate Scale Fliers Demand Dave Platti Im perfectionist kits prove reputation finest models RC scale has founded upon careful attention detail aperiod over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly e*t Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 THE ULTIMATE 3rand hold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ______________$179 New 1/4 Scale Pilot4$139 Supplied unpaint-Ale ed comes in-Available struction booklet1/5 116 scale WorldRetracting $30 Pilots fullLanding Gear War II FighterNow Strengthened figure625heavier ships complete system $139 110W TO ORDERDrrect manulaciurer no mark-upi Write call. accept check mosey order Master charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept loreign orders pay Ireight inlormation model send sell addressed envelope nave Dlatt nnodels inc NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nor at5iiaed will vvy viher cvmpvvy GRAPHITE ULTRA-PLY Carbon laminating material strengthening tjJes models LIGHTER THAN BALSA STRONGER THAN FIBERGLASS $249 SittO catalogue ox 31228 lndpls IN 46231 BUILDS WING STAB & FU 5 CHOICE OF MODELERS THE WORLD OVER Standarduse-Jig00 Full House $7995 Wing JigK it$10Wing & Fuse Jig Ajustojig CoR R 1 Box 673Nobleoville Indiana 46060317] 877-2223 Whether consider yourself novice expert model builder A-i usto Jig will improve aircraft construc tion e valuable time bargain A-Justo-Jig holds major com ponents proper alignment entire unit will rotate 36O permit fit glue plank shape sand con venient position No messy glu ing over plans waiting dry before beginning opposite side A-Justo-Jig will adjust rib former spacing lets build-in wing dihedral strong warp-free construction TO USE simple template rib indexing tool included locate drill holes rib alignment rods easy preparation takes approx 15 minutes average wing A-i usto-Jig builds em better Ask favorite hobby dealer Youll glad did arantee use time 5 LastCarry small first aid kit car never know friend may need got caught friend gashed finger several weeks ago now have one' Have safe month John Preston 7012 Church VA 22042 Elsira Ct. Falls Fun/Winter Continued paqe 23 Slope Soarers wheel around track hands-off trimmed circle rock-steady skim along higher airspeeds case airfoil smallish wing area about 71 perhaps 81 aspect ratio thick al 15% dihedral five degrees CG fairly far forward three-channel controls no ailerons get steady turn on al titude loss doesnt spiral down less dihedral seems require repeat edly touching stick corrections Fin rudder position respect rolling axis aircraft magi cal mystical ingredient After lot vertical tail area above axis has leverage increase turn bank lower greater yaw effectiveness excessive coupling dihedral increase bank angle think Sal Taibis Spacer FE vertical tail bottom plane Vertical tail shape can concentrate area closer rolling axis Pattern people crate no wash outwhich sometimes spelled trouble variable gusty crosswind take offs Aloft held nose high edge stall right tip always would break rock crate straight flight strong updraft hit wing tip would tend stall its angle attack suddenly increased forcing ship turn quickly lift Always rightnever leftand speed would pick up requires stronger lift once has results out proportion expectations slow up nurse lift merely sinks through thinks ballasted Sailplanes cant conclude thick airfoil panacea 26-28 oz loading case high-lift section happens good match crate built lightly should have airfoil would have thin ner what happens airflow over airfoil changes angles load ings speeds size plane wander Dismal Swamp Reynolds Number flight purposethere purposes everything changes according what want flyit probable size roughly Eaglet down two turbulator spars rather sheet skinning back front spar could yield better results lighter weights both Eaglet parasol Electric mentioned have two turbulator spars am interested extended durations Both ships rather lightweight lower air speeds spars seem help Merely 1/8 squares small EF Rubber job seems have duration let rear edge leading edge act turbulator smooth rib con tours sheeting After great Rubber jobs came out Cleveland OHKorda Lanzo dozens oth ershad multiplicity light spars bending rearward match curved planform shapes outer panels Id prefer have answers wouldnt adventure P-49 Power eventonce bumblebee John Oldenkamp made Mad Test Pilot made first flight new 40/60 Krackerjac 6 ft K&B 40 just yesterday would have heard about bumblebee Krack erjac incidentally proved bit differ ent stab bottom short-coupled fuselage blast power retarding clump grass brings up Continued page 136 EeiFrhgpI 99-* KIT BUILDERS Lighten strengthen sent project factory processed graphite gtass balsa laminates * SCRATCH BUILDERS Design high-tech composites ultimate strength weight components yea Itat already familiar wITh MAGNALITE composItes try sample kIt includes CF 007 CF 014- Rigid graphite sheets CF 250 t /4 end grain balsa graphite laminate 08 125- t/t end grain balsa glass laminate GB 250- 1/4 end grain balsa glass laminate Graphite Rods- 075 1/4 diameter Brochore- Shows use composite Pefliat tinting st sizes prices available CF007n24S gog CF 014 5' o24StR00 CF2506o12 $1300 GB125 120 12 700 Ijromotinnai GB25012nt2$ 850 j saleprice Graphite1/4 n 24 51800 Rnds 075' n36' $455 Mitlodpiher110$ 750 Glass Balloons 1 gal5 6 50 New Sampie Kit 500 Rrnchure 5 100 VISA MASTERCARD COD CHECK OR MONEY ORDER Florida ResIdents Add 5% Sales Tao Add $300 Possage ling Salts ano Inlormation CENTRAL FLORIDA HOBBIES 4g1 State ho 434 monte Springs FloriOa 32701 Phone 3051 788-3718 Sam Leonard Proprietor September 1983 133 Tired Being Shot Down SUPER SERVO GARD Controls Throttle Cant * Constantly monitors receiver interference another trans mitter outside sources instantly reducing throttle idle until interference clears * Constantly monitors flight battery pack voltage instantly reduces throttle idle allowing time safely land * Responds instantly loss radio signal throttling back idle alerting flight problem * Affects throttle giving complete control other servos safe landing * Minimizes crash damage caused signal loss ending full force smash-ups Endorsed IMAAShow Team required show model flown SPECIFICATIONS Size KPS 1411 Servo Case Power 17 ma Volt Cut-Out Point 46 volts Pulse Width Range Adj 0628 milliseconds Systems 3 4 wire Temp Range 00 1400 F Weight 12 oz Price $4795 Postpaid Specify connector type positive negative pulse ordering RF Enterprises 106 N Main St. Arlington OH 45814 419 365-5056 APPLIED DESIGN CORPORATION 738 Penn St El Segundo CA 90245 MINI ER ADJUSTABLE TENSION HAND BELT SANDER FIRMLY HOLDS PAPER FOR EASIER SANDING Padded hats curves LIeld$220 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFloe Garnet AND EFFORT $1 40 SANDING BELTSAsold Water Preel --TEE &~zJALUMINUM EXTRUSION SANDING BLOCK ler use dlii RUFF-STUFF Self-adhesIve sand paper large True Serlace WutWurOul lllncIiS235 Handy Use 22 luck $350 RUFF & STUFF SELP ADHESIVE SHEET MANE YOUR OWN SPECIAL SANDPAPER Vt SANDING SHAPES No messy ghe er drying till Medium Flee r Flu N & SAW $625 COMPACT 10 inch HACK SAW ___SAWS ANYTHING ANYWHERE Saw has rogged die-cast Iraiu wIth cemlertable chip-preel plaslic hisen handle Receding flue aed ad estahle B blade glees geedwerk ucceso Cuts mend plastic metal sod HARDENED MUSIC WIRE Xtr blades-3/199 Fun/Winter Continued froni oaoe 136 stab delicately takes fullup elevator until wheels go light takeoff before can relax stick So have go 3-in 4-in wheels shim sheet-metal taildragger gear tilts forward stays level approach lowest idle fooled pilot fully retarding throttle trim actually reached cut-offand crate still almost over ran strip An ex-jet-jockey reminded bee buzzed around cock pit desperation guy took ship up 45000 dumped cockpit pressure expecting bee dedicate its life science continued fly about Thin air neither impaired bees ability aerobatics thrive human would have bel lied-up oxygen After landing canopy opened bee flew joyfuliy away 49er bumblebee probably saw three-view basic 49er proposal Dave Linstrums column MAN ewhere now Since modelers read ali mags can turn com ment Christmas Eve last John 01denkamp summed-up proposed fun club rules San Diego Orbiteers 1983-84 seasons copyrighted no less gotta share wrote John No answer required nor am asking write anything about column However think have achieved least minor break through getting up new viable Power classone incidentally will adapt virtually RC-assist RC sport RC-whatever What happened John ran local New Events Committee got together Oldenkamp Harry Steinmetz co-chairs plus Biil Wild Bill Netzeband Cezar Banks Bill Booth John Hutchinson multi-years in-grade including RC FF CL Author YOU have picnic long enough galaxy thinkers boggles mind preliminary de liberations yielded Baseline Gas Class felt could handle problems aspirations Perfessor Walt Mooney Banks got together work same aerospace facility Mooney got real jolt out whole thing added two bits call 49er Forty Niner whatever max power 049 reed valve max dimension 49 mini mum weight 490 grams 172 oz plus fuselage enclose box 2 x 31/2 x 7 Voila may have something after rate Mooney fram ing couple prototypes show-andtell annual banquet Author 1982 remember go ing cover fly buggers soon possible Author re member plea John upon new RC interest abandon ingeni ous FE sport flair both rubber gas Johns PS reassuring RC proj ect dead 49er gets two fuse lages Total-time/motor-run ratios noth ing new just fun logi cal concept going back 40 50 years never has captured wide attention late great Jim Walker preached idea nationally early 1930s such towering genius among wild things thought nothing flying three throttled CL models simul taneously suggested anything people listened just listened far out figured Jim also thought crates stay field per haps tied some distance meas urement Ground Zerowhich would have too much bother knows original rules proposal stated 120-sec max flight duration unlimit ed engine run scoring determined Flight Time Seconds over Engine Run times 100 highest score two official flights counted 15% bonus given unassisted two-main wheel-ROG launches love own interest FF having faded ROG rule abandoned Javelin launches leave cold have realize hot engines came climb speeds went Mach really needed conflicting adjust ments handle takeoff etc crate leaped off leaned over Thats tough makeshift runways pain So heres enjoyable ROG bonus 049 does need end-to-end plywood rolling strip tar paperthe way Admiral Nel son loved fly Herb Clukey gild lily Dave Linstrums nice drawing Theres front view added since box created flat behind cabin Herb curved top outline aft cabin note negative lifting tail drawn resultant severe angular difference Now want sportfly simple RC emphasis pri mary training glide soaring allowing enlargement own fun note lifting stab has lots area has lots airfoiled lift CG probably lies 75% wing chord have fondled drawing months RC would wise make stab airfoil thickness 50% wing thickness terms its own chord vertical tail could placed above stab position remainder aft fuselage lopped off Since FE intended steep climb probably turning such de viations RC will superior 136 Model Aviation Add 20% postage Send 25C catalog wing moved back its leading edge chord-length behind rear prop washer still may balance 50% chord use electric power would smart lay batteries fuselage floor adjusting rearward necessary flat streamlined stab resorted CG may have placed 40% perhaps 33% chord aft LE Pure guessing want wander further afield improve RC turn characteristics getting super FF gliding mode youll want shorten rather long tail moment arm shown threeview span aspect ratio given reasonable beginning point meas ure half-span midpoint wing chord midpoint stab chord drawing now presented would move stab forward almost one-chord length its own short-nosed job have moved wing back have about same set up longer nose easier balance flexibility great purist would build charming little buggy FE wanted control pre vent chasing provide lazy mans recovery system would emALL SHEET ONE PIECE AAA GRADE KILN DRIED SANDED TO CLOSE TOLERANCES PED 100% Light 4-6lb361/8x3453/l6sq.173/8x11/246 1/16x349 1/16x448 1/4sq26 1/2x270 3/32 x 356 3/32 x 456 1/4 x 3/830 1/8 x 367 1/8 x 466 3/8 sq.37 BalsaTriangles 3/16 x 37648 Sticks36 1/4 x 385MatchedAdd 40%1/4 x 1/425 3/8x3115Sheets423/8x3/830 1/2x3139 3/32x4100NEW1/2x 1/235 1/8 x 4108 Basswood & Pine 3/4 3/445 Sheets 48 3/16x4120Sticks For1 xl55 x349 1/4x41311/4 Scale x3 Balsa Sticks 36Lite Ply48 82 1/16x1/4091/8x6150 3/32 11410 Birch Dowels 36 1/8 12300 124 1/8sq11809 1/8x114113/16113PlyBirch48 118x11218 11414 1/64x12525 1/32x12425 76316 sq.11Send addressed1/16 12435 .lI4sq16 1 11221 stamped envelope 1/8 12450 1 sq.27for catalogue 134 3/8 1/232listing sires5Ply Birch48 3/32x12570 225lI2sq361/Ba 12585 Pine Sticks36TrailingEdge3/16 12585 Sheets 30 lISsq.1336l/4a12600 331 118x1/416 1/4x132 337 1/8x3/820 5/16x11/439 ploy tiny receiver mini servo rudder minimum use scares non-F Fers install sec ond mini servo small elevator just trim required Once see FE circling lift youll hooked Any old-time EFer feels nostalgic about airplane better have de thermalizer reliable engine run control 49er rules say no timer San Diego Orbiteers include 10 other novel fun events summary rubber CO-2 Arm-pow ered What havent heard about Arm last round-up Ive fallen love object affection No SAM 35 Year Book roughly 6 x 8 stiff-pap er-covered 42-page excluding two fold-out plans collection marvel ous low-key historical articles Iwas-there flair numerous twoand three-view drawings manner crates stone-age up what fondly term old-timer age scads meaningful pictures choice selection subjects experi ence just fabulous copy read able fun informativea trip moon Ones mind plays games wonderful planes depicted bunch mysterious Englishmen put thing together Charming arti cles long short sometimes bit techni cal typewriters ran amuck thing alone worth price admis sion 23-page article C E Bowden Charlie Grant England con sidered opus limited personal story doubt man alive could write something intriguing informa tive master has spoken began year birth MAP friends England gave SAM 35 Year Book terse review Pos sibly major publishing company relatively unlimited resources salaried manpower long time no longer produced hardbacked Aeromodeller Annual would bit testy Like critics everywhere reflect vision what would con sider perfect Perfection can boring no such animaL SAM 35 flew high dont perceive did waxen wings got too close sun ama teurs have managed five-star entertainment Amateurs yesthey neglected publish either price addressCont p 138 CHUCK WOOD Hank Clark WOOD CHIP 5RORTAE HEY-THERECUcKS ".WJ$HOLYSOXJIGGES- cucicGET USDTOI-IIM BOYS PILOT IM HIS FB-4tz-7pLOOkATAt.L- CMOJ NOW5 CUP%~THOSE ADcET5 I-4A-HA--ETHE.JEyTr HE OFTENTAiES EEHERE ONE M/NUT-GONE IBLIKD HOW HES RtG2GONE\ \\-IATARE -YEAH CAPT WE WITHOUT JLISTSAWYOU -____PILOT /NTHEPE THEAIRPLANE -PLAIN As DAY7 AL NOT S V WITH HIM 000 FELLAS September 1983 137 find regular issue SAM 35 Speaks editors name David Baker 22 Ellington Rd Muswell Hill London NlO 3DG England long-hand slip sample says American modelers may obtain copy $700 Perhaps youll want inquire first perse vere Stop must Bill Winter 4426 Altura Ct Fairfax VA 22030 Two-Meter/Jolly Continued page 28 Mike Regans model could des cribed typical Valley competition Sailplane features fiberglass fuse lage incredibly strong wing foam spruce balsa construction Mike Bame 15% airfoilalways good taste familiar current F3B scene coun try will recognize similarity Alex Bowers Tai Tai special interest Mikes model has conventional polyhe dral geometry leads wonder ailerons really necessary high-speed Sailplane Close Regans heels another SFVSF member Mike Bame fin ished second Mike flew aileroned version Sailplane flown Regan Mike Bame very innovative modeler responsible developing materials techniques used fellow club members Speaking SFVSF no sur prise see its members claim five six top places clubs total com mitment advancing Sailplane tech nology has given members both models experience necessary well multi-task contest cause great depth talent SFVSF can muster members club will certainly strong force contend long choose compete effort away winch advantage SFVSF construc ted six identical winches use contest course gave contestants equal chance good launch memories have contest sticks mind good times generated meet Everyone came have good time did fact have good time anyone didnt should perhaps think about compete hobby/sport Personally enjoy multi-task Soaring other phase RC Sail plane flying concept TwoMeter World Cup allows others like myself enjoy thrill chal lenge closed-course racing something possible more-usual Sailplane gatherings members Modesto RC Club SFVSF particularly Mr Hanson congratulations job well done looking forward Fifth Two-Meter World Cup See Luton Minor/Mathews Continued page 37 turning 9 X 6 prop Idle marvelously slow reliable mid-range excellent adjustments breeze Rigging photos illustrates technique Start nylon bolt threaded block Measure block up both wings exactly same height off board wing bolt screwed Run string tail post exactly same point both wing panels keep adjusting fore aft position grabber loosen ing clothespins until exactly dimension determines left right thrust must zero-zero Once wing panels equal dihedral left-right grabber epoxied clamped against wing structure Avoid later necessity raising lowering wing incidence carefully measuring against flat fuselage top time After epoxy has cured unit still jigged glue steel straps strut slots 5-mm epoxy ends should screwed pre-drilled holes Rigging difficult complex However requires patience care dont hurry Covering Finishing has Mono Kote wing tail surfaces Sig Koverall fuselage Koverall heat-sealed over Coverite Balsarite heat-shrunk Three coats clear nitrate dope followed two sprayed coats Pactra Poly-U fuselage wing leading edge trim Poly U Numbers EZ-Stik vinyl6 wing 4 fuselage pilot figure Williams Bros 2i-in standard unit painted paint plastic models Banner wheels go nicely model Flying Ground handling takeoff roll must seen believed thing gets up its mains will run straight down runway mile Apparently lowto-the-ground fuselage high-up-in-theair wing combine produce truly extra ordinary handling Luton Minor doesnt need rudder stabbing steerable tail wheel get going straight down runway Just point direction want advance throttle other hand tracks darn well difficult turn around taxiing cares climb-out function wing engine intended climb prop rather uses speed climb wing steep pull-up such clear deck portion touch-and-go pre pared witness strange phenomenon 138 Model Aviation Power Soar New Heights self-addressed stamped envelope catalog ap plication notes Leisure 11 DeerspringllrvinelCA 92714 LT-50 Electric Motor 01 Cu equivelent gas engine displacement / CANNON SYSTEMS 13400-26 Saticoy Str.t North Hollywood Calif 91605 PIoo 2131764-1488 SUPER-MICRO FLITE PACKS Worlds Smallest R Units will work Standard AM Transmitters other Makes Equip aircraft SUPER MICR~Ick Flite Pack inc ud MICRO Rx 54oz- gr MICRO Servos 47 oz-~ ce BATT 100 nelsCASH PRICE 22z~Thgr$14995 33oz962 gr18350 43 BBoz 1101 gr21695 Shipping $450 27 72 MHz other freqs $1000 Calif add Sales Tax Brochure 7& US $200 Foreign CASH DISCOUNT PRICES SHOWN Credit Cards 5% VISAMore 20% Deposit Req d f COD s

IT IS AS THEY SAY small world meets other modelers unlikely places once bumped Frank Heeb Nats FF Rubber winner year corner 42nd St Fifth Ave New York City Frank lived Midwest overtook Tom Mahon midday throng Times Square Tom lived Hawaii en countered Gordon Light Pennsyl vania now retired Maine working lower floor building roosted downtown Washington DC rye just call son Mike about chat retired Air Force man plane Texas chap has Quadra-powered Krackeijac early 1 960s 15 cabin modeL sending plans such big crates alas no good help gung-ho guys Sears McCorrison Thirty years ago met Sears over coffee New Jersey Turnpike both plowing homeward Philly Nats Sears no planes must have faces crowd trek Nats hits area comes across experimenter happy MG-8 designed Sears MOCorrison quiet world fiddling little Rubber Scale jobs seems never -to have wanted anything have ever suggested anything publication met just once short yearly letters have found various magazines home wherever live Sometimes hed enclose picture print some Peanut etc Searching through old folders plans came across prints Rose Para keets old-time home-builder bipe goes back days Heath NOTE 1945 model featured banana type airfoildeep root tapering flat tips 12 inches24 5 10 15 20 25 30 Long Such things have strange turnings An other routine note Sears includes Xerox copy photo some ancient Gassie So what Everybody ancient Gassies came suspect Sears master understatement pro saic cabin job 1945 conspic uous undercamber near fuselage flat-bottom tip tapered wing twin-tailed dihedraled stab Curious wrote Sears long let ter now theres three-view 40 942 9409 506070 8412 0009 Mc Bride 80 90 18 Model Aviation picture left shows Sears McCorrison 1945 Free Flight plane other picture Sears brother kneeling crate caught Bill Winters eye Note deep undercamber wing root flat bottom tip Text relates Sears used NACA medi linesnote designations drawing below wing sections develop own FF airfoils bottom early-1930s McBride median developed low-speed testing single-surfaced Indoor airfoils McBride see old Zaic Yearbooks Fascinating eh what Three-view left McCorrisons 37-year-old FF came before lovely Keith Laumer sport FF crates appeared magazines 1950s early 1960s 6 Right Our author Bill Winter new electric-powered parasol-wing model flying extremely welL First three flights 6Y2 B 13 minutes An IR 05 six Sanyo sub-C cells 1 1-7Y2 prop gives go Weighs 39 oz Bantam servos might come 37 minis 250 mAh receiver pack may enough two long ther mal flights Above can see aluminum heat sink Utasi Joiner proportional speed control visible forward torsion-type gear device printed June 1983 MA Bill says provides whole new dimension Electric flying Since controls shut-off full power within range Bills Silver 7 throttle stick no fine-tuning dothe controller worked right off Bills Electric slated future MA MAX SPAN 49 PROJECTEDN4— NO SCALE 49 ER GAS MODEL SAN DIEGO ORBITEERS POWER049 REED VALVE ENG NOTE NO VARIABLE SURFACE GEOMETRY ALLOWED CONSULT RULES ANY LENGTH -49 MAXN--- V Bill Montgolfier Hannan erstwhile Peanut Scale aficionado soothed quivering nerves concentrating captain hotair balloon leaves terra firma Warren Shipp captured memorable moment film admired exemplary teamwork negatives model possibly meant nothing anyone Sears will see drawing almost 40-year-old FF has Keith Laumer motif realism subtle touches although Laumer appeared magazines until years later came graph paper page strange air foilsheavily undercambered things would find 1920s 1930s Al lost word banana 2X 35X 7 BOX FUSE FROM SHEET Drawing courtesy Dave Linstrum MODEL AIRPLANE NEWS hj c Walt Mooney John Oldenkamp Cezar Banks Bill Booth Harry Steinmetz Wild Bill Netzeband pooled talents cook up roughly dozen FF fun events San Diego Orbiteersincluding 49er FF Gas sie seems have lit fire under Bill Winter see text says Herb Clukey based drawing Linstrums artwork MAN September 1983 19 What led unexplained photo Sears interest comments about Ken Willards use banana airfoils such Kens 1/2A Schoolmaster published some years ago RCM cause some modeler allowed us fly Headmaster thrilled combination high lift almostparachute landings good speed step lack needing trim changes cabin model throttle jockeyed MEN Trainer uses Willard theme Sears generation before So show some funny-looking bananas What Sears says cryptic Enclosed some attempts reproducing airfoils using NACA mean lines 0009 0012 thicknesses mean lines modified 6400 mean line original airfoils morerounded leading edge rather way NACA ones came out Also cluded using McBride B-7 mean line 0009 thickness ratio Thats note word Mc bride very early Zaic Yearbooks long before WW II will find almost laboratory-grade work Indoor airfoils may have low-speed tunnel testing extremely low Reynolds Num bers Essentially McBrideknown crafty Indoor types near arc single-surfaced course Full-scale data means zilch lightweight slowflying models isnt until ap proach -scale sizes youll concede famous real sections superior job Harold deBolt used near-arc famous Live Wires early 1950s An arc good anything else slow-flying smaller models thickness profile counts Since love look airfoil pro files whimsy perhaps what leads reproduction McCor rison section After ba nanas cup coffee generation letters reminded yet again nothing new Modelers work never see around us Dont wonder what might tell us know guys cant wait hear about exhilerating flying adventures Im no expert Vernon MacNabb obtained first FCC-approved exam ination-free frequency late 1940s 465 MHz kidded worth million dollars him once told large get-together want find out what public will stuff send Winter can done wrong will know about Kadet beat death last yearit has 120 flights left off late December fearfully gusty After long bouncy approachnevertheless nicely over fenceI thing think about crate came good airspeed about 8-ft high break glide flare gust tilted crate precariously made fatal error Assuming bad made relaxed Startled could restart gray matter Gosh said myself give anything aileron augured-in vertically Kadet still lives undamaged lieve sod course its ancient K&B 40 has outlived Bridi 40 Top Flite Cub sorts random junk now makes clanking noises Fellows dont ever let down attention youre inch touch-down Ive fallen trap least six times flying life Have noted very last signal wrong have four new crates threechannel Eaglet cant match servo arm length/movement throttle arm moving servo arm will clear side will easy funny thing have two Silver 7s can set abso lutely anything almost including morn ing coffee transmitter Both Continued page 22 NEW AIRFOIL BY AL SUGAR BASIC RECIPE I Take top notch airfoil EPPLER 2051 write down its ordinates a Add above ordinates Mike Barnes sensational MB352515 3 Divide ordinate sums 2 new set overage ordinates 4 Draw new airfoil up using new average ordinates..ergo HAPPY MED IUMI compromise between thick can get away strengthl mathematical perfection stout enough gorilla launches yet slippery enough high L/D functions RHl3%HlPT28% MCLl8%L0PT4l% FROM Dallas League Silent Flight newsletter airfoils heres will drive batty After reading tine print visu alize pairings some favorites wildly different ones hopefully purpose mind see what come up Mike Bames sensational airfoil substitute own miracle section play DNA chain Geiger counter comes handy too 20 Model Aviation few Bill Goughs fabulous fliers Above Left original Aero Sled outdoor twin pusher Above Right Brown CO2-powered all-sheet flier hit 100-ft ceiling still climb ing indoors Below Left Curtiss Robin rubber job built Comet kit plans 1930s Below Right old master 1965 vacuum-formed nifty f 02 gas rubber THE WORLDS FIRST PRODUCTION ELECTRIC RIG HELICOPTERt Now can enloy fascination challenge P/C trelicoptering own backyard whisper-quiet all-electric makes no mess costs lust pennies fly Semi-assembled br minimum construction time Includes 2 powerful 05 motors H-D speed controller pitch wrenches 22 ft electric tether cord Hook tether cord 1 2V car battery br about 1 hr trimming training before recharge youre ready strap optional airborne powerpack electric-fan sky Ishimasa Japan SPECS 39 Rotor 33 0/A Weight 25 lb tethered 35 lb in/Airborne pack Motors PS 540 5 x 2 Radio 4 Channel Power Tethered 12V 4OAH car battery Free 8 cell 96V NI-CAD pack RETAILCONDOR EH-1 semi-asom kit2499518900 Airborne nicad powerpack45003600 11SVAC overnight charger17951435 12VDC t5-min quick-charger69954995 Optional Bell-HillOr Assy45003600 HANDLING CHARGES Prepaid Orders.$250 COD Orders$475 Credit Cards$4 75 IvIs4Ii I1 Shop 1681 Phone orV ~xf CONDOR HOBBIES Showroom 17835 Sky Park Circle E ne CA 92714 Phone 71415581888 X 581490 ONIC 1111W Top bottom Std MAGIC MUFFLER #4060 NEW MAGIC MUFFLER #6065-RE Series S NEW MAGIC MUTE Great news Magic Mottler 83 ultra-quiet designs und new lower prices Now lust cant attord pass up increased power aijd extra silencing youll get amazing mini-pipe-muttlers Avail able 2-cycle engines side rear exhaust 1mm 15 thra 65 sports pattern aircraft pylon racers ducted fans helicopters cars & geared boats racing boats new Series S features additional silencing section built right pipe br significant noise reduction no power loss Magic Mute add-on no-loss' silencer br old Magic Mufflers tuned pipe 2/z additional ozs Tests Ross 60 ABC std Magic Muttler showed 75-78 db well below FAI maximums #1 525 #1525-H #1 525 Series S #1525-H Series S #4046-RE specity engl #4060 #4060 Series S #6065-RE #6065-RE Series S Magic Mute CONDOR 2295 2295 2695 2695 2495 2495 2895 2595 2995 1395 H denotes helicopter use RE Ills rear exhaust engines er types lit both side rear exhaust Applications & specifications chart request 22 Model Aviation set up other ships trim author ity am too pooped adjust pots time fly different crates also currently have World Expert two Fu tabas several Airtronics have flown Krafts Id happy great stuff out have four-channel rubber-ducky aileron servos turns wrong way Last night Mad Test Pi lot after call Merlin performed 5mm brain surgeryno correct first place Took new 40-powered Kracker jac Fredericksburg blown out Steve Kaluf obligingly went through monotony taxiing get little time engine fuselage cloth-wrapped hold down Tomorrow Tomorrow new 56-in low-para sol Electric LR 50 six-cell Sanyo sub-C pack 515 squares weighs 37 oz turns 1 l-7 Mad Test Pilot poised handlaunch brow hill tall grass Shangri-la prevents ROG Since used lifting tail dead sure CG should turned out 42% chord tad nose-heavy took bit up-trim batteries shifted 3/8 rearward launch took over brow hill Like runaway steam locomotive kept running legs churn ing avoid disaster Down hill across road next field bled off speedall elusive CG increasingly out front base like Leaning Tower said outran crate Three quick flights 545 pm61/2 8 12 minutes bad Srulls Electric Sparky night took off nearby narrow road like Falcon 56 Smooth silk climbed rock-steady leisurely great height cruised shut down started up again glidedon rails Weve tached both planes various props now get compare 5 15 squares 464 squares 4 oz less weight newand fun hear now motors supposed ly 12 cells will turn 9-6 prop 8 mm 10000 rpm 25s ex ample 12-6 7000 direct drive reduction drive can ignored such prop range unless want turn Quarter Scale-size props Imagination fails Ive puzzled years heavy smallish wing area late RC Special outsoared anything including Vagabond RC-Assist OldTimerand big Sniffer RC Special loading around 26-28 oz per sq ft high-drag crate have get bit altitude start Put circle trim grooves unattended passes through lift tightens turn quite FFC Charc Sstcm RIC world has waiting product 30 years dependable fast/slow rate charger will safely rapidly charge both receiver transmitter batteries 12V DC source automatically Cut back overnight charge rate 48 V receiver 96V transmitter packs Charges 500 mah receiver pack 85% less hour 34K40FFC Kit$2995 34K40C-FFC Assembled$3995 IAF 1/3IniW Box 511 E Higginsville MO 64037 816584-7121 Send.r complete cetalc~ -.e products available dealer order direct add $100 handling fee bitalways its right wing tipand just goes on up up Take out lift fly straight between clouds turns lift whenever its foundand goes round round its own have got know certainly havent able repeat characteristics anything else So tried Scott Christensen Top Elite designer amazing Metrick have am sure have run across airplanes just simply should perform way eventually did Scott begins Usually reverse truehow well knowthat dont perform way intended cant begin tell times have designed perfect airplane its intended use have compromises gather forces ruin yet another dream would suspect Author blankety crate has correct amount dirty relationship appropriate amounts area weightand working per fect concert French-curve airfoil produce airplane should what does course always MAFT quotient MAFT number assigned given aircraft design always ar rived judgmentally since mathe matics involved would tax abilities IBMs latest computer men tion lifetime work just writing ram number assigned al ways ranges 10 ultimate being total failure Oftentimes Scott goes given design award ed two MAFT numbers collec tively flying buddies course yourself case its best average two interest continuity way MAFT stands Mystical Affinity Thermals Seriously Scott winds up ad vice fly enjoy dont ask whybecause answer very probably does exist least form can understand sounds like gal said Dont ask questions Reading between lines youll find Scotts Philosophy Infinitely Expand able call PIE factor words compromises what design real model Wright Flyer latest airliner about aerodynamic tomes dont guarantee model will fly compromises best intelligent guessesa pinch pinch Dihedral vertical tail two combined factors Mix profile area wing position thust line wheel areas etc allow simmer may never answer have faint clues Such crates still-air floaters have dynamic quality rather like Continued page 133 Discriminate Scale Fliers Demand Dave Platti Im perfectionist kits prove reputation finest models RC scale has founded upon careful attention detail aperiod over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly e*t Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 THE ULTIMATE 3rand hold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ______________$179 New 1/4 Scale Pilot4$139 Supplied unpaint-Ale ed comes in-Available struction booklet1/5 116 scale WorldRetracting $30 Pilots fullLanding Gear War II FighterNow Strengthened figure625heavier ships complete system $139 110W TO ORDERDrrect manulaciurer no mark-upi Write call. accept check mosey order Master charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept loreign orders pay Ireight inlormation model send sell addressed envelope nave Dlatt nnodels inc NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nor at5iiaed will vvy viher cvmpvvy GRAPHITE ULTRA-PLY Carbon laminating material strengthening tjJes models LIGHTER THAN BALSA STRONGER THAN FIBERGLASS $249 SittO catalogue ox 31228 lndpls IN 46231 BUILDS WING STAB & FU 5 CHOICE OF MODELERS THE WORLD OVER Standarduse-Jig00 Full House $7995 Wing JigK it$10Wing & Fuse Jig Ajustojig CoR R 1 Box 673Nobleoville Indiana 46060317] 877-2223 Whether consider yourself novice expert model builder A-i usto Jig will improve aircraft construc tion e valuable time bargain A-Justo-Jig holds major com ponents proper alignment entire unit will rotate 36O permit fit glue plank shape sand con venient position No messy glu ing over plans waiting dry before beginning opposite side A-Justo-Jig will adjust rib former spacing lets build-in wing dihedral strong warp-free construction TO USE simple template rib indexing tool included locate drill holes rib alignment rods easy preparation takes approx 15 minutes average wing A-i usto-Jig builds em better Ask favorite hobby dealer Youll glad did arantee use time 5 LastCarry small first aid kit car never know friend may need got caught friend gashed finger several weeks ago now have one' Have safe month John Preston 7012 Church VA 22042 Elsira Ct. Falls Fun/Winter Continued paqe 23 Slope Soarers wheel around track hands-off trimmed circle rock-steady skim along higher airspeeds case airfoil smallish wing area about 71 perhaps 81 aspect ratio thick al 15% dihedral five degrees CG fairly far forward three-channel controls no ailerons get steady turn on al titude loss doesnt spiral down less dihedral seems require repeat edly touching stick corrections Fin rudder position respect rolling axis aircraft magi cal mystical ingredient After lot vertical tail area above axis has leverage increase turn bank lower greater yaw effectiveness excessive coupling dihedral increase bank angle think Sal Taibis Spacer FE vertical tail bottom plane Vertical tail shape can concentrate area closer rolling axis Pattern people crate no wash outwhich sometimes spelled trouble variable gusty crosswind take offs Aloft held nose high edge stall right tip always would break rock crate straight flight strong updraft hit wing tip would tend stall its angle attack suddenly increased forcing ship turn quickly lift Always rightnever leftand speed would pick up requires stronger lift once has results out proportion expectations slow up nurse lift merely sinks through thinks ballasted Sailplanes cant conclude thick airfoil panacea 26-28 oz loading case high-lift section happens good match crate built lightly should have airfoil would have thin ner what happens airflow over airfoil changes angles load ings speeds size plane wander Dismal Swamp Reynolds Number flight purposethere purposes everything changes according what want flyit probable size roughly Eaglet down two turbulator spars rather sheet skinning back front spar could yield better results lighter weights both Eaglet parasol Electric mentioned have two turbulator spars am interested extended durations Both ships rather lightweight lower air speeds spars seem help Merely 1/8 squares small EF Rubber job seems have duration let rear edge leading edge act turbulator smooth rib con tours sheeting After great Rubber jobs came out Cleveland OHKorda Lanzo dozens oth ershad multiplicity light spars bending rearward match curved planform shapes outer panels Id prefer have answers wouldnt adventure P-49 Power eventonce bumblebee John Oldenkamp made Mad Test Pilot made first flight new 40/60 Krackerjac 6 ft K&B 40 just yesterday would have heard about bumblebee Krack erjac incidentally proved bit differ ent stab bottom short-coupled fuselage blast power retarding clump grass brings up Continued page 136 EeiFrhgpI 99-* KIT BUILDERS Lighten strengthen sent project factory processed graphite gtass balsa laminates * SCRATCH BUILDERS Design high-tech composites ultimate strength weight components yea Itat already familiar wITh MAGNALITE composItes try sample kIt includes CF 007 CF 014- Rigid graphite sheets CF 250 t /4 end grain balsa graphite laminate 08 125- t/t end grain balsa glass laminate GB 250- 1/4 end grain balsa glass laminate Graphite Rods- 075 1/4 diameter Brochore- Shows use composite Pefliat tinting st sizes prices available CF007n24S gog CF 014 5' o24StR00 CF2506o12 $1300 GB125 120 12 700 Ijromotinnai GB25012nt2$ 850 j saleprice Graphite1/4 n 24 51800 Rnds 075' n36' $455 Mitlodpiher110$ 750 Glass Balloons 1 gal5 6 50 New Sampie Kit 500 Rrnchure 5 100 VISA MASTERCARD COD CHECK OR MONEY ORDER Florida ResIdents Add 5% Sales Tao Add $300 Possage ling Salts ano Inlormation CENTRAL FLORIDA HOBBIES 4g1 State ho 434 monte Springs FloriOa 32701 Phone 3051 788-3718 Sam Leonard Proprietor September 1983 133 Tired Being Shot Down SUPER SERVO GARD Controls Throttle Cant * Constantly monitors receiver interference another trans mitter outside sources instantly reducing throttle idle until interference clears * Constantly monitors flight battery pack voltage instantly reduces throttle idle allowing time safely land * Responds instantly loss radio signal throttling back idle alerting flight problem * Affects throttle giving complete control other servos safe landing * Minimizes crash damage caused signal loss ending full force smash-ups Endorsed IMAAShow Team required show model flown SPECIFICATIONS Size KPS 1411 Servo Case Power 17 ma Volt Cut-Out Point 46 volts Pulse Width Range Adj 0628 milliseconds Systems 3 4 wire Temp Range 00 1400 F Weight 12 oz Price $4795 Postpaid Specify connector type positive negative pulse ordering RF Enterprises 106 N Main St. Arlington OH 45814 419 365-5056 APPLIED DESIGN CORPORATION 738 Penn St El Segundo CA 90245 MINI ER ADJUSTABLE TENSION HAND BELT SANDER FIRMLY HOLDS PAPER FOR EASIER SANDING Padded hats curves LIeld$220 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFloe Garnet AND EFFORT $1 40 SANDING BELTSAsold Water Preel --TEE &~zJALUMINUM EXTRUSION SANDING BLOCK ler use dlii RUFF-STUFF Self-adhesIve sand paper large True Serlace WutWurOul lllncIiS235 Handy Use 22 luck $350 RUFF & STUFF SELP ADHESIVE SHEET MANE YOUR OWN SPECIAL SANDPAPER Vt SANDING SHAPES No messy ghe er drying till Medium Flee r Flu N & SAW $625 COMPACT 10 inch HACK SAW ___SAWS ANYTHING ANYWHERE Saw has rogged die-cast Iraiu wIth cemlertable chip-preel plaslic hisen handle Receding flue aed ad estahle B blade glees geedwerk ucceso Cuts mend plastic metal sod HARDENED MUSIC WIRE Xtr blades-3/199 Fun/Winter Continued froni oaoe 136 stab delicately takes fullup elevator until wheels go light takeoff before can relax stick So have go 3-in 4-in wheels shim sheet-metal taildragger gear tilts forward stays level approach lowest idle fooled pilot fully retarding throttle trim actually reached cut-offand crate still almost over ran strip An ex-jet-jockey reminded bee buzzed around cock pit desperation guy took ship up 45000 dumped cockpit pressure expecting bee dedicate its life science continued fly about Thin air neither impaired bees ability aerobatics thrive human would have bel lied-up oxygen After landing canopy opened bee flew joyfuliy away 49er bumblebee probably saw three-view basic 49er proposal Dave Linstrums column MAN ewhere now Since modelers read ali mags can turn com ment Christmas Eve last John 01denkamp summed-up proposed fun club rules San Diego Orbiteers 1983-84 seasons copyrighted no less gotta share wrote John No answer required nor am asking write anything about column However think have achieved least minor break through getting up new viable Power classone incidentally will adapt virtually RC-assist RC sport RC-whatever What happened John ran local New Events Committee got together Oldenkamp Harry Steinmetz co-chairs plus Biil Wild Bill Netzeband Cezar Banks Bill Booth John Hutchinson multi-years in-grade including RC FF CL Author YOU have picnic long enough galaxy thinkers boggles mind preliminary de liberations yielded Baseline Gas Class felt could handle problems aspirations Perfessor Walt Mooney Banks got together work same aerospace facility Mooney got real jolt out whole thing added two bits call 49er Forty Niner whatever max power 049 reed valve max dimension 49 mini mum weight 490 grams 172 oz plus fuselage enclose box 2 x 31/2 x 7 Voila may have something after rate Mooney fram ing couple prototypes show-andtell annual banquet Author 1982 remember go ing cover fly buggers soon possible Author re member plea John upon new RC interest abandon ingeni ous FE sport flair both rubber gas Johns PS reassuring RC proj ect dead 49er gets two fuse lages Total-time/motor-run ratios noth ing new just fun logi cal concept going back 40 50 years never has captured wide attention late great Jim Walker preached idea nationally early 1930s such towering genius among wild things thought nothing flying three throttled CL models simul taneously suggested anything people listened just listened far out figured Jim also thought crates stay field per haps tied some distance meas urement Ground Zerowhich would have too much bother knows original rules proposal stated 120-sec max flight duration unlimit ed engine run scoring determined Flight Time Seconds over Engine Run times 100 highest score two official flights counted 15% bonus given unassisted two-main wheel-ROG launches love own interest FF having faded ROG rule abandoned Javelin launches leave cold have realize hot engines came climb speeds went Mach really needed conflicting adjust ments handle takeoff etc crate leaped off leaned over Thats tough makeshift runways pain So heres enjoyable ROG bonus 049 does need end-to-end plywood rolling strip tar paperthe way Admiral Nel son loved fly Herb Clukey gild lily Dave Linstrums nice drawing Theres front view added since box created flat behind cabin Herb curved top outline aft cabin note negative lifting tail drawn resultant severe angular difference Now want sportfly simple RC emphasis pri mary training glide soaring allowing enlargement own fun note lifting stab has lots area has lots airfoiled lift CG probably lies 75% wing chord have fondled drawing months RC would wise make stab airfoil thickness 50% wing thickness terms its own chord vertical tail could placed above stab position remainder aft fuselage lopped off Since FE intended steep climb probably turning such de viations RC will superior 136 Model Aviation Add 20% postage Send 25C catalog wing moved back its leading edge chord-length behind rear prop washer still may balance 50% chord use electric power would smart lay batteries fuselage floor adjusting rearward necessary flat streamlined stab resorted CG may have placed 40% perhaps 33% chord aft LE Pure guessing want wander further afield improve RC turn characteristics getting super FF gliding mode youll want shorten rather long tail moment arm shown threeview span aspect ratio given reasonable beginning point meas ure half-span midpoint wing chord midpoint stab chord drawing now presented would move stab forward almost one-chord length its own short-nosed job have moved wing back have about same set up longer nose easier balance flexibility great purist would build charming little buggy FE wanted control pre vent chasing provide lazy mans recovery system would emALL SHEET ONE PIECE AAA GRADE KILN DRIED SANDED TO CLOSE TOLERANCES PED 100% Light 4-6lb361/8x3453/l6sq.173/8x11/246 1/16x349 1/16x448 1/4sq26 1/2x270 3/32 x 356 3/32 x 456 1/4 x 3/830 1/8 x 367 1/8 x 466 3/8 sq.37 BalsaTriangles 3/16 x 37648 Sticks36 1/4 x 385MatchedAdd 40%1/4 x 1/425 3/8x3115Sheets423/8x3/830 1/2x3139 3/32x4100NEW1/2x 1/235 1/8 x 4108 Basswood & Pine 3/4 3/445 Sheets 48 3/16x4120Sticks For1 xl55 x349 1/4x41311/4 Scale x3 Balsa Sticks 36Lite Ply48 82 1/16x1/4091/8x6150 3/32 11410 Birch Dowels 36 1/8 12300 124 1/8sq11809 1/8x114113/16113PlyBirch48 118x11218 11414 1/64x12525 1/32x12425 76316 sq.11Send addressed1/16 12435 .lI4sq16 1 11221 stamped envelope 1/8 12450 1 sq.27for catalogue 134 3/8 1/232listing sires5Ply Birch48 3/32x12570 225lI2sq361/Ba 12585 Pine Sticks36TrailingEdge3/16 12585 Sheets 30 lISsq.1336l/4a12600 331 118x1/416 1/4x132 337 1/8x3/820 5/16x11/439 ploy tiny receiver mini servo rudder minimum use scares non-F Fers install sec ond mini servo small elevator just trim required Once see FE circling lift youll hooked Any old-time EFer feels nostalgic about airplane better have de thermalizer reliable engine run control 49er rules say no timer San Diego Orbiteers include 10 other novel fun events summary rubber CO-2 Arm-pow ered What havent heard about Arm last round-up Ive fallen love object affection No SAM 35 Year Book roughly 6 x 8 stiff-pap er-covered 42-page excluding two fold-out plans collection marvel ous low-key historical articles Iwas-there flair numerous twoand three-view drawings manner crates stone-age up what fondly term old-timer age scads meaningful pictures choice selection subjects experi ence just fabulous copy read able fun informativea trip moon Ones mind plays games wonderful planes depicted bunch mysterious Englishmen put thing together Charming arti cles long short sometimes bit techni cal typewriters ran amuck thing alone worth price admis sion 23-page article C E Bowden Charlie Grant England con sidered opus limited personal story doubt man alive could write something intriguing informa tive master has spoken began year birth MAP friends England gave SAM 35 Year Book terse review Pos sibly major publishing company relatively unlimited resources salaried manpower long time no longer produced hardbacked Aeromodeller Annual would bit testy Like critics everywhere reflect vision what would con sider perfect Perfection can boring no such animaL SAM 35 flew high dont perceive did waxen wings got too close sun ama teurs have managed five-star entertainment Amateurs yesthey neglected publish either price addressCont p 138 CHUCK WOOD Hank Clark WOOD CHIP 5RORTAE HEY-THERECUcKS ".WJ$HOLYSOXJIGGES- cucicGET USDTOI-IIM BOYS PILOT IM HIS FB-4tz-7pLOOkATAt.L- CMOJ NOW5 CUP%~THOSE ADcET5 I-4A-HA--ETHE.JEyTr HE OFTENTAiES EEHERE ONE M/NUT-GONE IBLIKD HOW HES RtG2GONE\ \\-IATARE -YEAH CAPT WE WITHOUT JLISTSAWYOU -____PILOT /NTHEPE THEAIRPLANE -PLAIN As DAY7 AL NOT S V WITH HIM 000 FELLAS September 1983 137 find regular issue SAM 35 Speaks editors name David Baker 22 Ellington Rd Muswell Hill London NlO 3DG England long-hand slip sample says American modelers may obtain copy $700 Perhaps youll want inquire first perse vere Stop must Bill Winter 4426 Altura Ct Fairfax VA 22030 Two-Meter/Jolly Continued page 28 Mike Regans model could des cribed typical Valley competition Sailplane features fiberglass fuse lage incredibly strong wing foam spruce balsa construction Mike Bame 15% airfoilalways good taste familiar current F3B scene coun try will recognize similarity Alex Bowers Tai Tai special interest Mikes model has conventional polyhe dral geometry leads wonder ailerons really necessary high-speed Sailplane Close Regans heels another SFVSF member Mike Bame fin ished second Mike flew aileroned version Sailplane flown Regan Mike Bame very innovative modeler responsible developing materials techniques used fellow club members Speaking SFVSF no sur prise see its members claim five six top places clubs total com mitment advancing Sailplane tech nology has given members both models experience necessary well multi-task contest cause great depth talent SFVSF can muster members club will certainly strong force contend long choose compete effort away winch advantage SFVSF construc ted six identical winches use contest course gave contestants equal chance good launch memories have contest sticks mind good times generated meet Everyone came have good time did fact have good time anyone didnt should perhaps think about compete hobby/sport Personally enjoy multi-task Soaring other phase RC Sail plane flying concept TwoMeter World Cup allows others like myself enjoy thrill chal lenge closed-course racing something possible more-usual Sailplane gatherings members Modesto RC Club SFVSF particularly Mr Hanson congratulations job well done looking forward Fifth Two-Meter World Cup See Luton Minor/Mathews Continued page 37 turning 9 X 6 prop Idle marvelously slow reliable mid-range excellent adjustments breeze Rigging photos illustrates technique Start nylon bolt threaded block Measure block up both wings exactly same height off board wing bolt screwed Run string tail post exactly same point both wing panels keep adjusting fore aft position grabber loosen ing clothespins until exactly dimension determines left right thrust must zero-zero Once wing panels equal dihedral left-right grabber epoxied clamped against wing structure Avoid later necessity raising lowering wing incidence carefully measuring against flat fuselage top time After epoxy has cured unit still jigged glue steel straps strut slots 5-mm epoxy ends should screwed pre-drilled holes Rigging difficult complex However requires patience care dont hurry Covering Finishing has Mono Kote wing tail surfaces Sig Koverall fuselage Koverall heat-sealed over Coverite Balsarite heat-shrunk Three coats clear nitrate dope followed two sprayed coats Pactra Poly-U fuselage wing leading edge trim Poly U Numbers EZ-Stik vinyl6 wing 4 fuselage pilot figure Williams Bros 2i-in standard unit painted paint plastic models Banner wheels go nicely model Flying Ground handling takeoff roll must seen believed thing gets up its mains will run straight down runway mile Apparently lowto-the-ground fuselage high-up-in-theair wing combine produce truly extra ordinary handling Luton Minor doesnt need rudder stabbing steerable tail wheel get going straight down runway Just point direction want advance throttle other hand tracks darn well difficult turn around taxiing cares climb-out function wing engine intended climb prop rather uses speed climb wing steep pull-up such clear deck portion touch-and-go pre pared witness strange phenomenon 138 Model Aviation Power Soar New Heights self-addressed stamped envelope catalog ap plication notes Leisure 11 DeerspringllrvinelCA 92714 LT-50 Electric Motor 01 Cu equivelent gas engine displacement / CANNON SYSTEMS 13400-26 Saticoy Str.t North Hollywood Calif 91605 PIoo 2131764-1488 SUPER-MICRO FLITE PACKS Worlds Smallest R Units will work Standard AM Transmitters other Makes Equip aircraft SUPER MICR~Ick Flite Pack inc ud MICRO Rx 54oz- gr MICRO Servos 47 oz-~ ce BATT 100 nelsCASH PRICE 22z~Thgr$14995 33oz962 gr18350 43 BBoz 1101 gr21695 Shipping $450 27 72 MHz other freqs $1000 Calif add Sales Tax Brochure 7& US $200 Foreign CASH DISCOUNT PRICES SHOWN Credit Cards 5% VISAMore 20% Deposit Req d f COD s

IT IS AS THEY SAY small world meets other modelers unlikely places once bumped Frank Heeb Nats FF Rubber winner year corner 42nd St Fifth Ave New York City Frank lived Midwest overtook Tom Mahon midday throng Times Square Tom lived Hawaii en countered Gordon Light Pennsyl vania now retired Maine working lower floor building roosted downtown Washington DC rye just call son Mike about chat retired Air Force man plane Texas chap has Quadra-powered Krackeijac early 1 960s 15 cabin modeL sending plans such big crates alas no good help gung-ho guys Sears McCorrison Thirty years ago met Sears over coffee New Jersey Turnpike both plowing homeward Philly Nats Sears no planes must have faces crowd trek Nats hits area comes across experimenter happy MG-8 designed Sears MOCorrison quiet world fiddling little Rubber Scale jobs seems never -to have wanted anything have ever suggested anything publication met just once short yearly letters have found various magazines home wherever live Sometimes hed enclose picture print some Peanut etc Searching through old folders plans came across prints Rose Para keets old-time home-builder bipe goes back days Heath NOTE 1945 model featured banana type airfoildeep root tapering flat tips 12 inches24 5 10 15 20 25 30 Long Such things have strange turnings An other routine note Sears includes Xerox copy photo some ancient Gassie So what Everybody ancient Gassies came suspect Sears master understatement pro saic cabin job 1945 conspic uous undercamber near fuselage flat-bottom tip tapered wing twin-tailed dihedraled stab Curious wrote Sears long let ter now theres three-view 40 942 9409 506070 8412 0009 Mc Bride 80 90 18 Model Aviation picture left shows Sears McCorrison 1945 Free Flight plane other picture Sears brother kneeling crate caught Bill Winters eye Note deep undercamber wing root flat bottom tip Text relates Sears used NACA medi linesnote designations drawing below wing sections develop own FF airfoils bottom early-1930s McBride median developed low-speed testing single-surfaced Indoor airfoils McBride see old Zaic Yearbooks Fascinating eh what Three-view left McCorrisons 37-year-old FF came before lovely Keith Laumer sport FF crates appeared magazines 1950s early 1960s 6 Right Our author Bill Winter new electric-powered parasol-wing model flying extremely welL First three flights 6Y2 B 13 minutes An IR 05 six Sanyo sub-C cells 1 1-7Y2 prop gives go Weighs 39 oz Bantam servos might come 37 minis 250 mAh receiver pack may enough two long ther mal flights Above can see aluminum heat sink Utasi Joiner proportional speed control visible forward torsion-type gear device printed June 1983 MA Bill says provides whole new dimension Electric flying Since controls shut-off full power within range Bills Silver 7 throttle stick no fine-tuning dothe controller worked right off Bills Electric slated future MA MAX SPAN 49 PROJECTEDN4— NO SCALE 49 ER GAS MODEL SAN DIEGO ORBITEERS POWER049 REED VALVE ENG NOTE NO VARIABLE SURFACE GEOMETRY ALLOWED CONSULT RULES ANY LENGTH -49 MAXN--- V Bill Montgolfier Hannan erstwhile Peanut Scale aficionado soothed quivering nerves concentrating captain hotair balloon leaves terra firma Warren Shipp captured memorable moment film admired exemplary teamwork negatives model possibly meant nothing anyone Sears will see drawing almost 40-year-old FF has Keith Laumer motif realism subtle touches although Laumer appeared magazines until years later came graph paper page strange air foilsheavily undercambered things would find 1920s 1930s Al lost word banana 2X 35X 7 BOX FUSE FROM SHEET Drawing courtesy Dave Linstrum MODEL AIRPLANE NEWS hj c Walt Mooney John Oldenkamp Cezar Banks Bill Booth Harry Steinmetz Wild Bill Netzeband pooled talents cook up roughly dozen FF fun events San Diego Orbiteersincluding 49er FF Gas sie seems have lit fire under Bill Winter see text says Herb Clukey based drawing Linstrums artwork MAN September 1983 19 What led unexplained photo Sears interest comments about Ken Willards use banana airfoils such Kens 1/2A Schoolmaster published some years ago RCM cause some modeler allowed us fly Headmaster thrilled combination high lift almostparachute landings good speed step lack needing trim changes cabin model throttle jockeyed MEN Trainer uses Willard theme Sears generation before So show some funny-looking bananas What Sears says cryptic Enclosed some attempts reproducing airfoils using NACA mean lines 0009 0012 thicknesses mean lines modified 6400 mean line original airfoils morerounded leading edge rather way NACA ones came out Also cluded using McBride B-7 mean line 0009 thickness ratio Thats note word Mc bride very early Zaic Yearbooks long before WW II will find almost laboratory-grade work Indoor airfoils may have low-speed tunnel testing extremely low Reynolds Num bers Essentially McBrideknown crafty Indoor types near arc single-surfaced course Full-scale data means zilch lightweight slowflying models isnt until ap proach -scale sizes youll concede famous real sections superior job Harold deBolt used near-arc famous Live Wires early 1950s An arc good anything else slow-flying smaller models thickness profile counts Since love look airfoil pro files whimsy perhaps what leads reproduction McCor rison section After ba nanas cup coffee generation letters reminded yet again nothing new Modelers work never see around us Dont wonder what might tell us know guys cant wait hear about exhilerating flying adventures Im no expert Vernon MacNabb obtained first FCC-approved exam ination-free frequency late 1940s 465 MHz kidded worth million dollars him once told large get-together want find out what public will stuff send Winter can done wrong will know about Kadet beat death last yearit has 120 flights left off late December fearfully gusty After long bouncy approachnevertheless nicely over fenceI thing think about crate came good airspeed about 8-ft high break glide flare gust tilted crate precariously made fatal error Assuming bad made relaxed Startled could restart gray matter Gosh said myself give anything aileron augured-in vertically Kadet still lives undamaged lieve sod course its ancient K&B 40 has outlived Bridi 40 Top Flite Cub sorts random junk now makes clanking noises Fellows dont ever let down attention youre inch touch-down Ive fallen trap least six times flying life Have noted very last signal wrong have four new crates threechannel Eaglet cant match servo arm length/movement throttle arm moving servo arm will clear side will easy funny thing have two Silver 7s can set abso lutely anything almost including morn ing coffee transmitter Both Continued page 22 NEW AIRFOIL BY AL SUGAR BASIC RECIPE I Take top notch airfoil EPPLER 2051 write down its ordinates a Add above ordinates Mike Barnes sensational MB352515 3 Divide ordinate sums 2 new set overage ordinates 4 Draw new airfoil up using new average ordinates..ergo HAPPY MED IUMI compromise between thick can get away strengthl mathematical perfection stout enough gorilla launches yet slippery enough high L/D functions RHl3%HlPT28% MCLl8%L0PT4l% FROM Dallas League Silent Flight newsletter airfoils heres will drive batty After reading tine print visu alize pairings some favorites wildly different ones hopefully purpose mind see what come up Mike Bames sensational airfoil substitute own miracle section play DNA chain Geiger counter comes handy too 20 Model Aviation few Bill Goughs fabulous fliers Above Left original Aero Sled outdoor twin pusher Above Right Brown CO2-powered all-sheet flier hit 100-ft ceiling still climb ing indoors Below Left Curtiss Robin rubber job built Comet kit plans 1930s Below Right old master 1965 vacuum-formed nifty f 02 gas rubber THE WORLDS FIRST PRODUCTION ELECTRIC RIG HELICOPTERt Now can enloy fascination challenge P/C trelicoptering own backyard whisper-quiet all-electric makes no mess costs lust pennies fly Semi-assembled br minimum construction time Includes 2 powerful 05 motors H-D speed controller pitch wrenches 22 ft electric tether cord Hook tether cord 1 2V car battery br about 1 hr trimming training before recharge youre ready strap optional airborne powerpack electric-fan sky Ishimasa Japan SPECS 39 Rotor 33 0/A Weight 25 lb tethered 35 lb in/Airborne pack Motors PS 540 5 x 2 Radio 4 Channel Power Tethered 12V 4OAH car battery Free 8 cell 96V NI-CAD pack RETAILCONDOR EH-1 semi-asom kit2499518900 Airborne nicad powerpack45003600 11SVAC overnight charger17951435 12VDC t5-min quick-charger69954995 Optional Bell-HillOr Assy45003600 HANDLING CHARGES Prepaid Orders.$250 COD Orders$475 Credit Cards$4 75 IvIs4Ii I1 Shop 1681 Phone orV ~xf CONDOR HOBBIES Showroom 17835 Sky Park Circle E ne CA 92714 Phone 71415581888 X 581490 ONIC 1111W Top bottom Std MAGIC MUFFLER #4060 NEW MAGIC MUFFLER #6065-RE Series S NEW MAGIC MUTE Great news Magic Mottler 83 ultra-quiet designs und new lower prices Now lust cant attord pass up increased power aijd extra silencing youll get amazing mini-pipe-muttlers Avail able 2-cycle engines side rear exhaust 1mm 15 thra 65 sports pattern aircraft pylon racers ducted fans helicopters cars & geared boats racing boats new Series S features additional silencing section built right pipe br significant noise reduction no power loss Magic Mute add-on no-loss' silencer br old Magic Mufflers tuned pipe 2/z additional ozs Tests Ross 60 ABC std Magic Muttler showed 75-78 db well below FAI maximums #1 525 #1525-H #1 525 Series S #1525-H Series S #4046-RE specity engl #4060 #4060 Series S #6065-RE #6065-RE Series S Magic Mute CONDOR 2295 2295 2695 2695 2495 2495 2895 2595 2995 1395 H denotes helicopter use RE Ills rear exhaust engines er types lit both side rear exhaust Applications & specifications chart request 22 Model Aviation set up other ships trim author ity am too pooped adjust pots time fly different crates also currently have World Expert two Fu tabas several Airtronics have flown Krafts Id happy great stuff out have four-channel rubber-ducky aileron servos turns wrong way Last night Mad Test Pi lot after call Merlin performed 5mm brain surgeryno correct first place Took new 40-powered Kracker jac Fredericksburg blown out Steve Kaluf obligingly went through monotony taxiing get little time engine fuselage cloth-wrapped hold down Tomorrow Tomorrow new 56-in low-para sol Electric LR 50 six-cell Sanyo sub-C pack 515 squares weighs 37 oz turns 1 l-7 Mad Test Pilot poised handlaunch brow hill tall grass Shangri-la prevents ROG Since used lifting tail dead sure CG should turned out 42% chord tad nose-heavy took bit up-trim batteries shifted 3/8 rearward launch took over brow hill Like runaway steam locomotive kept running legs churn ing avoid disaster Down hill across road next field bled off speedall elusive CG increasingly out front base like Leaning Tower said outran crate Three quick flights 545 pm61/2 8 12 minutes bad Srulls Electric Sparky night took off nearby narrow road like Falcon 56 Smooth silk climbed rock-steady leisurely great height cruised shut down started up again glidedon rails Weve tached both planes various props now get compare 5 15 squares 464 squares 4 oz less weight newand fun hear now motors supposed ly 12 cells will turn 9-6 prop 8 mm 10000 rpm 25s ex ample 12-6 7000 direct drive reduction drive can ignored such prop range unless want turn Quarter Scale-size props Imagination fails Ive puzzled years heavy smallish wing area late RC Special outsoared anything including Vagabond RC-Assist OldTimerand big Sniffer RC Special loading around 26-28 oz per sq ft high-drag crate have get bit altitude start Put circle trim grooves unattended passes through lift tightens turn quite FFC Charc Sstcm RIC world has waiting product 30 years dependable fast/slow rate charger will safely rapidly charge both receiver transmitter batteries 12V DC source automatically Cut back overnight charge rate 48 V receiver 96V transmitter packs Charges 500 mah receiver pack 85% less hour 34K40FFC Kit$2995 34K40C-FFC Assembled$3995 IAF 1/3IniW Box 511 E Higginsville MO 64037 816584-7121 Send.r complete cetalc~ -.e products available dealer order direct add $100 handling fee bitalways its right wing tipand just goes on up up Take out lift fly straight between clouds turns lift whenever its foundand goes round round its own have got know certainly havent able repeat characteristics anything else So tried Scott Christensen Top Elite designer amazing Metrick have am sure have run across airplanes just simply should perform way eventually did Scott begins Usually reverse truehow well knowthat dont perform way intended cant begin tell times have designed perfect airplane its intended use have compromises gather forces ruin yet another dream would suspect Author blankety crate has correct amount dirty relationship appropriate amounts area weightand working per fect concert French-curve airfoil produce airplane should what does course always MAFT quotient MAFT number assigned given aircraft design always ar rived judgmentally since mathe matics involved would tax abilities IBMs latest computer men tion lifetime work just writing ram number assigned al ways ranges 10 ultimate being total failure Oftentimes Scott goes given design award ed two MAFT numbers collec tively flying buddies course yourself case its best average two interest continuity way MAFT stands Mystical Affinity Thermals Seriously Scott winds up ad vice fly enjoy dont ask whybecause answer very probably does exist least form can understand sounds like gal said Dont ask questions Reading between lines youll find Scotts Philosophy Infinitely Expand able call PIE factor words compromises what design real model Wright Flyer latest airliner about aerodynamic tomes dont guarantee model will fly compromises best intelligent guessesa pinch pinch Dihedral vertical tail two combined factors Mix profile area wing position thust line wheel areas etc allow simmer may never answer have faint clues Such crates still-air floaters have dynamic quality rather like Continued page 133 Discriminate Scale Fliers Demand Dave Platti Im perfectionist kits prove reputation finest models RC scale has founded upon careful attention detail aperiod over twenty years fact Im particular about kits theyre available personally make each kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly e*t Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 THE ULTIMATE 3rand hold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines ______________$179 New 1/4 Scale Pilot4$139 Supplied unpaint-Ale ed comes in-Available struction booklet1/5 116 scale WorldRetracting $30 Pilots fullLanding Gear War II FighterNow Strengthened figure625heavier ships complete system $139 110W TO ORDERDrrect manulaciurer no mark-upi Write call. accept check mosey order Master charge Visa cards pay UPS anywhere USA Florida residents add 4% sales tax Yes accept loreign orders pay Ireight inlormation model send sell addressed envelope nave Dlatt nnodels inc NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nor at5iiaed will vvy viher cvmpvvy GRAPHITE ULTRA-PLY Carbon laminating material strengthening tjJes models LIGHTER THAN BALSA STRONGER THAN FIBERGLASS $249 SittO catalogue ox 31228 lndpls IN 46231 BUILDS WING STAB & FU 5 CHOICE OF MODELERS THE WORLD OVER Standarduse-Jig00 Full House $7995 Wing JigK it$10Wing & Fuse Jig Ajustojig CoR R 1 Box 673Nobleoville Indiana 46060317] 877-2223 Whether consider yourself novice expert model builder A-i usto Jig will improve aircraft construc tion e valuable time bargain A-Justo-Jig holds major com ponents proper alignment entire unit will rotate 36O permit fit glue plank shape sand con venient position No messy glu ing over plans waiting dry before beginning opposite side A-Justo-Jig will adjust rib former spacing lets build-in wing dihedral strong warp-free construction TO USE simple template rib indexing tool included locate drill holes rib alignment rods easy preparation takes approx 15 minutes average wing A-i usto-Jig builds em better Ask favorite hobby dealer Youll glad did arantee use time 5 LastCarry small first aid kit car never know friend may need got caught friend gashed finger several weeks ago now have one' Have safe month John Preston 7012 Church VA 22042 Elsira Ct. Falls Fun/Winter Continued paqe 23 Slope Soarers wheel around track hands-off trimmed circle rock-steady skim along higher airspeeds case airfoil smallish wing area about 71 perhaps 81 aspect ratio thick al 15% dihedral five degrees CG fairly far forward three-channel controls no ailerons get steady turn on al titude loss doesnt spiral down less dihedral seems require repeat edly touching stick corrections Fin rudder position respect rolling axis aircraft magi cal mystical ingredient After lot vertical tail area above axis has leverage increase turn bank lower greater yaw effectiveness excessive coupling dihedral increase bank angle think Sal Taibis Spacer FE vertical tail bottom plane Vertical tail shape can concentrate area closer rolling axis Pattern people crate no wash outwhich sometimes spelled trouble variable gusty crosswind take offs Aloft held nose high edge stall right tip always would break rock crate straight flight strong updraft hit wing tip would tend stall its angle attack suddenly increased forcing ship turn quickly lift Always rightnever leftand speed would pick up requires stronger lift once has results out proportion expectations slow up nurse lift merely sinks through thinks ballasted Sailplanes cant conclude thick airfoil panacea 26-28 oz loading case high-lift section happens good match crate built lightly should have airfoil would have thin ner what happens airflow over airfoil changes angles load ings speeds size plane wander Dismal Swamp Reynolds Number flight purposethere purposes everything changes according what want flyit probable size roughly Eaglet down two turbulator spars rather sheet skinning back front spar could yield better results lighter weights both Eaglet parasol Electric mentioned have two turbulator spars am interested extended durations Both ships rather lightweight lower air speeds spars seem help Merely 1/8 squares small EF Rubber job seems have duration let rear edge leading edge act turbulator smooth rib con tours sheeting After great Rubber jobs came out Cleveland OHKorda Lanzo dozens oth ershad multiplicity light spars bending rearward match curved planform shapes outer panels Id prefer have answers wouldnt adventure P-49 Power eventonce bumblebee John Oldenkamp made Mad Test Pilot made first flight new 40/60 Krackerjac 6 ft K&B 40 just yesterday would have heard about bumblebee Krack erjac incidentally proved bit differ ent stab bottom short-coupled fuselage blast power retarding clump grass brings up Continued page 136 EeiFrhgpI 99-* KIT BUILDERS Lighten strengthen sent project factory processed graphite gtass balsa laminates * SCRATCH BUILDERS Design high-tech composites ultimate strength weight components yea Itat already familiar wITh MAGNALITE composItes try sample kIt includes CF 007 CF 014- Rigid graphite sheets CF 250 t /4 end grain balsa graphite laminate 08 125- t/t end grain balsa glass laminate GB 250- 1/4 end grain balsa glass laminate Graphite Rods- 075 1/4 diameter Brochore- Shows use composite Pefliat tinting st sizes prices available CF007n24S gog CF 014 5' o24StR00 CF2506o12 $1300 GB125 120 12 700 Ijromotinnai GB25012nt2$ 850 j saleprice Graphite1/4 n 24 51800 Rnds 075' n36' $455 Mitlodpiher110$ 750 Glass Balloons 1 gal5 6 50 New Sampie Kit 500 Rrnchure 5 100 VISA MASTERCARD COD CHECK OR MONEY ORDER Florida ResIdents Add 5% Sales Tao Add $300 Possage ling Salts ano Inlormation CENTRAL FLORIDA HOBBIES 4g1 State ho 434 monte Springs FloriOa 32701 Phone 3051 788-3718 Sam Leonard Proprietor September 1983 133 Tired Being Shot Down SUPER SERVO GARD Controls Throttle Cant * Constantly monitors receiver interference another trans mitter outside sources instantly reducing throttle idle until interference clears * Constantly monitors flight battery pack voltage instantly reduces throttle idle allowing time safely land * Responds instantly loss radio signal throttling back idle alerting flight problem * Affects throttle giving complete control other servos safe landing * Minimizes crash damage caused signal loss ending full force smash-ups Endorsed IMAAShow Team required show model flown SPECIFICATIONS Size KPS 1411 Servo Case Power 17 ma Volt Cut-Out Point 46 volts Pulse Width Range Adj 0628 milliseconds Systems 3 4 wire Temp Range 00 1400 F Weight 12 oz Price $4795 Postpaid Specify connector type positive negative pulse ordering RF Enterprises 106 N Main St. Arlington OH 45814 419 365-5056 APPLIED DESIGN CORPORATION 738 Penn St El Segundo CA 90245 MINI ER ADJUSTABLE TENSION HAND BELT SANDER FIRMLY HOLDS PAPER FOR EASIER SANDING Padded hats curves LIeld$220 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFloe Garnet AND EFFORT $1 40 SANDING BELTSAsold Water Preel --TEE &~zJALUMINUM EXTRUSION SANDING BLOCK ler use dlii RUFF-STUFF Self-adhesIve sand paper large True Serlace WutWurOul lllncIiS235 Handy Use 22 luck $350 RUFF & STUFF SELP ADHESIVE SHEET MANE YOUR OWN SPECIAL SANDPAPER Vt SANDING SHAPES No messy ghe er drying till Medium Flee r Flu N & SAW $625 COMPACT 10 inch HACK SAW ___SAWS ANYTHING ANYWHERE Saw has rogged die-cast Iraiu wIth cemlertable chip-preel plaslic hisen handle Receding flue aed ad estahle B blade glees geedwerk ucceso Cuts mend plastic metal sod HARDENED MUSIC WIRE Xtr blades-3/199 Fun/Winter Continued froni oaoe 136 stab delicately takes fullup elevator until wheels go light takeoff before can relax stick So have go 3-in 4-in wheels shim sheet-metal taildragger gear tilts forward stays level approach lowest idle fooled pilot fully retarding throttle trim actually reached cut-offand crate still almost over ran strip An ex-jet-jockey reminded bee buzzed around cock pit desperation guy took ship up 45000 dumped cockpit pressure expecting bee dedicate its life science continued fly about Thin air neither impaired bees ability aerobatics thrive human would have bel lied-up oxygen After landing canopy opened bee flew joyfuliy away 49er bumblebee probably saw three-view basic 49er proposal Dave Linstrums column MAN ewhere now Since modelers read ali mags can turn com ment Christmas Eve last John 01denkamp summed-up proposed fun club rules San Diego Orbiteers 1983-84 seasons copyrighted no less gotta share wrote John No answer required nor am asking write anything about column However think have achieved least minor break through getting up new viable Power classone incidentally will adapt virtually RC-assist RC sport RC-whatever What happened John ran local New Events Committee got together Oldenkamp Harry Steinmetz co-chairs plus Biil Wild Bill Netzeband Cezar Banks Bill Booth John Hutchinson multi-years in-grade including RC FF CL Author YOU have picnic long enough galaxy thinkers boggles mind preliminary de liberations yielded Baseline Gas Class felt could handle problems aspirations Perfessor Walt Mooney Banks got together work same aerospace facility Mooney got real jolt out whole thing added two bits call 49er Forty Niner whatever max power 049 reed valve max dimension 49 mini mum weight 490 grams 172 oz plus fuselage enclose box 2 x 31/2 x 7 Voila may have something after rate Mooney fram ing couple prototypes show-andtell annual banquet Author 1982 remember go ing cover fly buggers soon possible Author re member plea John upon new RC interest abandon ingeni ous FE sport flair both rubber gas Johns PS reassuring RC proj ect dead 49er gets two fuse lages Total-time/motor-run ratios noth ing new just fun logi cal concept going back 40 50 years never has captured wide attention late great Jim Walker preached idea nationally early 1930s such towering genius among wild things thought nothing flying three throttled CL models simul taneously suggested anything people listened just listened far out figured Jim also thought crates stay field per haps tied some distance meas urement Ground Zerowhich would have too much bother knows original rules proposal stated 120-sec max flight duration unlimit ed engine run scoring determined Flight Time Seconds over Engine Run times 100 highest score two official flights counted 15% bonus given unassisted two-main wheel-ROG launches love own interest FF having faded ROG rule abandoned Javelin launches leave cold have realize hot engines came climb speeds went Mach really needed conflicting adjust ments handle takeoff etc crate leaped off leaned over Thats tough makeshift runways pain So heres enjoyable ROG bonus 049 does need end-to-end plywood rolling strip tar paperthe way Admiral Nel son loved fly Herb Clukey gild lily Dave Linstrums nice drawing Theres front view added since box created flat behind cabin Herb curved top outline aft cabin note negative lifting tail drawn resultant severe angular difference Now want sportfly simple RC emphasis pri mary training glide soaring allowing enlargement own fun note lifting stab has lots area has lots airfoiled lift CG probably lies 75% wing chord have fondled drawing months RC would wise make stab airfoil thickness 50% wing thickness terms its own chord vertical tail could placed above stab position remainder aft fuselage lopped off Since FE intended steep climb probably turning such de viations RC will superior 136 Model Aviation Add 20% postage Send 25C catalog wing moved back its leading edge chord-length behind rear prop washer still may balance 50% chord use electric power would smart lay batteries fuselage floor adjusting rearward necessary flat streamlined stab resorted CG may have placed 40% perhaps 33% chord aft LE Pure guessing want wander further afield improve RC turn characteristics getting super FF gliding mode youll want shorten rather long tail moment arm shown threeview span aspect ratio given reasonable beginning point meas ure half-span midpoint wing chord midpoint stab chord drawing now presented would move stab forward almost one-chord length its own short-nosed job have moved wing back have about same set up longer nose easier balance flexibility great purist would build charming little buggy FE wanted control pre vent chasing provide lazy mans recovery system would emALL SHEET ONE PIECE AAA GRADE KILN DRIED SANDED TO CLOSE TOLERANCES PED 100% Light 4-6lb361/8x3453/l6sq.173/8x11/246 1/16x349 1/16x448 1/4sq26 1/2x270 3/32 x 356 3/32 x 456 1/4 x 3/830 1/8 x 367 1/8 x 466 3/8 sq.37 BalsaTriangles 3/16 x 37648 Sticks36 1/4 x 385MatchedAdd 40%1/4 x 1/425 3/8x3115Sheets423/8x3/830 1/2x3139 3/32x4100NEW1/2x 1/235 1/8 x 4108 Basswood & Pine 3/4 3/445 Sheets 48 3/16x4120Sticks For1 xl55 x349 1/4x41311/4 Scale x3 Balsa Sticks 36Lite Ply48 82 1/16x1/4091/8x6150 3/32 11410 Birch Dowels 36 1/8 12300 124 1/8sq11809 1/8x114113/16113PlyBirch48 118x11218 11414 1/64x12525 1/32x12425 76316 sq.11Send addressed1/16 12435 .lI4sq16 1 11221 stamped envelope 1/8 12450 1 sq.27for catalogue 134 3/8 1/232listing sires5Ply Birch48 3/32x12570 225lI2sq361/Ba 12585 Pine Sticks36TrailingEdge3/16 12585 Sheets 30 lISsq.1336l/4a12600 331 118x1/416 1/4x132 337 1/8x3/820 5/16x11/439 ploy tiny receiver mini servo rudder minimum use scares non-F Fers install sec ond mini servo small elevator just trim required Once see FE circling lift youll hooked Any old-time EFer feels nostalgic about airplane better have de thermalizer reliable engine run control 49er rules say no timer San Diego Orbiteers include 10 other novel fun events summary rubber CO-2 Arm-pow ered What havent heard about Arm last round-up Ive fallen love object affection No SAM 35 Year Book roughly 6 x 8 stiff-pap er-covered 42-page excluding two fold-out plans collection marvel ous low-key historical articles Iwas-there flair numerous twoand three-view drawings manner crates stone-age up what fondly term old-timer age scads meaningful pictures choice selection subjects experi ence just fabulous copy read able fun informativea trip moon Ones mind plays games wonderful planes depicted bunch mysterious Englishmen put thing together Charming arti cles long short sometimes bit techni cal typewriters ran amuck thing alone worth price admis sion 23-page article C E Bowden Charlie Grant England con sidered opus limited personal story doubt man alive could write something intriguing informa tive master has spoken began year birth MAP friends England gave SAM 35 Year Book terse review Pos sibly major publishing company relatively unlimited resources salaried manpower long time no longer produced hardbacked Aeromodeller Annual would bit testy Like critics everywhere reflect vision what would con sider perfect Perfection can boring no such animaL SAM 35 flew high dont perceive did waxen wings got too close sun ama teurs have managed five-star entertainment Amateurs yesthey neglected publish either price addressCont p 138 CHUCK WOOD Hank Clark WOOD CHIP 5RORTAE HEY-THERECUcKS ".WJ$HOLYSOXJIGGES- cucicGET USDTOI-IIM BOYS PILOT IM HIS FB-4tz-7pLOOkATAt.L- CMOJ NOW5 CUP%~THOSE ADcET5 I-4A-HA--ETHE.JEyTr HE OFTENTAiES EEHERE ONE M/NUT-GONE IBLIKD HOW HES RtG2GONE\ \\-IATARE -YEAH CAPT WE WITHOUT JLISTSAWYOU -____PILOT /NTHEPE THEAIRPLANE -PLAIN As DAY7 AL NOT S V WITH HIM 000 FELLAS September 1983 137 find regular issue SAM 35 Speaks editors name David Baker 22 Ellington Rd Muswell Hill London NlO 3DG England long-hand slip sample says American modelers may obtain copy $700 Perhaps youll want inquire first perse vere Stop must Bill Winter 4426 Altura Ct Fairfax VA 22030 Two-Meter/Jolly Continued page 28 Mike Regans model could des cribed typical Valley competition Sailplane features fiberglass fuse lage incredibly strong wing foam spruce balsa construction Mike Bame 15% airfoilalways good taste familiar current F3B scene coun try will recognize similarity Alex Bowers Tai Tai special interest Mikes model has conventional polyhe dral geometry leads wonder ailerons really necessary high-speed Sailplane Close Regans heels another SFVSF member Mike Bame fin ished second Mike flew aileroned version Sailplane flown Regan Mike Bame very innovative modeler responsible developing materials techniques used fellow club members Speaking SFVSF no sur prise see its members claim five six top places clubs total com mitment advancing Sailplane tech nology has given members both models experience necessary well multi-task contest cause great depth talent SFVSF can muster members club will certainly strong force contend long choose compete effort away winch advantage SFVSF construc ted six identical winches use contest course gave contestants equal chance good launch memories have contest sticks mind good times generated meet Everyone came have good time did fact have good time anyone didnt should perhaps think about compete hobby/sport Personally enjoy multi-task Soaring other phase RC Sail plane flying concept TwoMeter World Cup allows others like myself enjoy thrill chal lenge closed-course racing something possible more-usual Sailplane gatherings members Modesto RC Club SFVSF particularly Mr Hanson congratulations job well done looking forward Fifth Two-Meter World Cup See Luton Minor/Mathews Continued page 37 turning 9 X 6 prop Idle marvelously slow reliable mid-range excellent adjustments breeze Rigging photos illustrates technique Start nylon bolt threaded block Measure block up both wings exactly same height off board wing bolt screwed Run string tail post exactly same point both wing panels keep adjusting fore aft position grabber loosen ing clothespins until exactly dimension determines left right thrust must zero-zero Once wing panels equal dihedral left-right grabber epoxied clamped against wing structure Avoid later necessity raising lowering wing incidence carefully measuring against flat fuselage top time After epoxy has cured unit still jigged glue steel straps strut slots 5-mm epoxy ends should screwed pre-drilled holes Rigging difficult complex However requires patience care dont hurry Covering Finishing has Mono Kote wing tail surfaces Sig Koverall fuselage Koverall heat-sealed over Coverite Balsarite heat-shrunk Three coats clear nitrate dope followed two sprayed coats Pactra Poly-U fuselage wing leading edge trim Poly U Numbers EZ-Stik vinyl6 wing 4 fuselage pilot figure Williams Bros 2i-in standard unit painted paint plastic models Banner wheels go nicely model Flying Ground handling takeoff roll must seen believed thing gets up its mains will run straight down runway mile Apparently lowto-the-ground fuselage high-up-in-theair wing combine produce truly extra ordinary handling Luton Minor doesnt need rudder stabbing steerable tail wheel get going straight down runway Just point direction want advance throttle other hand tracks darn well difficult turn around taxiing cares climb-out function wing engine intended climb prop rather uses speed climb wing steep pull-up such clear deck portion touch-and-go pre pared witness strange phenomenon 138 Model Aviation Power Soar New Heights self-addressed stamped envelope catalog ap plication notes Leisure 11 DeerspringllrvinelCA 92714 LT-50 Electric Motor 01 Cu equivelent gas engine displacement / CANNON SYSTEMS 13400-26 Saticoy Str.t North Hollywood Calif 91605 PIoo 2131764-1488 SUPER-MICRO FLITE PACKS Worlds Smallest R Units will work Standard AM Transmitters other Makes Equip aircraft SUPER MICR~Ick Flite Pack inc ud MICRO Rx 54oz- gr MICRO Servos 47 oz-~ ce BATT 100 nelsCASH PRICE 22z~Thgr$14995 33oz962 gr18350 43 BBoz 1101 gr21695 Shipping $450 27 72 MHz other freqs $1000 Calif add Sales Tax Brochure 7& US $200 Foreign CASH DISCOUNT PRICES SHOWN Credit Cards 5% VISAMore 20% Deposit Req d f COD s