Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model Products129 Carolina-Taffinder132 Champion Hobbies126 Circus Hobbies Inc116-121 Clark Airscrew136 Columbia Model Crafts114 Consumers Hobby Corp112-113 Contempo Enterprises49 Coverite47 Jim Crocket Replicas135 DG Products8 DGM Industries111 DW Products135 DaCa Model Products137 Davey Systems Corp130 Davis Diesel Development103 Du-Bro Products Inc10 DynaKnight industries106 Dynathrust Props Inc102 Edson Enterprises103 Electroline Models102 Addis Elmore138 Bill Evans Aircraft134 FAI Model Supply97 138 FHS Supply & Mfg Co134 Flightilne Shirts124 Flyline Models115 Fourmost Products111 Fox Manufacturing Co43 Full Command Systems107 Fuits Tooling134 Futaba Corp America139 Futurfilte127 Gemini Models Inc106 Gibbs Hobby & Research97 Carl Goldberg Models11 Gorham Model Products14 Great Lakes Model & Mold Co108 Great Planes Model Mfg Co13 Grish Brothers110 132 Hardware Systems108 115 Hayes Products45 Hobby Barn92-95 Hobby Capitol Distributors8 Hobby Horn96 Hobby Lobby International4-7 Hobby Radio Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls scaler 15-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 sizes15-30 35-40$125 No 291Cap 20 40-powered scale PC French aerobatic plane Low wing tail dragger 2 sheets . $750 No 299GeeBee Sr Sporteter PC -scale Haffke 91 power Prototype span 30 ft 2 sheets$1175 No 302Mini F-16 PC Sarpolas 048 ducted fan sport flier 2-ch Balsa wings tail fuse structare $275 No 307Pegasus PC Watsons giant saper sailplane features flaps spoilers T-tail 166 wingspan$675 No 309Super Brigadier PC Doc Mathews apdate theSOs favorite Easyflying 3-ch for1 9- 25-power$475 No 3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Twosheets. $625 No 314Drake II PC Ken Willards flying boat 3-ch 15-power Fly land removable gear No 317Schwaizer TG3-A PC Sport Scale Sailplane Jack Miner has 11-ft span 3-nh Two sheets 0 No 319Dirt Stripper PC Sport flier 19-40 3-ch Ragged tail-dragger roagh helds$300 No 321TC Two CL Sport Stant twin 20s featares tricycle gear profile faselage Sarpolas No 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355Santos-Dumont 14-bis PC Sport-Scale canard bipe for1 5-power 3-nh spans 56 2 sheets$575 No 356Maula Lunar Rocket PC -Scale spans 925 5-nh flaps 12 no engine$1200 No 357SE-B CL Sport-Scale power Biplane WW I-type$200 No358Pieces PP Indoor Easy B Pabber-power contest-winner W Van Gorder$100 No 359Black Widow PC Pan-Scale twin two lOs 4-nh PC spans 56 WW II sight fighter $675 No 360Dragon CL Slow Combat winner has foam wing ases 36-power$500 No 361Electric country Boy PP Pecord-holding daratios craft 02 motor$200 No 362Suparcat PC Half-A Pylon Pacer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364Neutron Star PC Sleek 40-size Pattern flierwith tail dragger retracts enclosed pipe bailt-up$525 OeOSeeOee@@@eeee@@OOSeOo@OOOSO Circle numbersj planss wish order 0 131168225239253259 285291299302307309 322323325326 340341342343344345 351352353354 362363364365366367 Pleaseprintcarefully 260262269278282 310314317318321 328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0
Edition: Model Aviation - 1982/05
Page Numbers: 54, 55, 135, 136, 137, 138, 140
Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model 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Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls 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328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0
Edition: Model Aviation - 1982/05
Page Numbers: 54, 55, 135, 136, 137, 138, 140
Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model Products129 Carolina-Taffinder132 Champion Hobbies126 Circus Hobbies Inc116-121 Clark Airscrew136 Columbia Model Crafts114 Consumers Hobby Corp112-113 Contempo Enterprises49 Coverite47 Jim Crocket Replicas135 DG Products8 DGM Industries111 DW Products135 DaCa Model Products137 Davey Systems Corp130 Davis Diesel Development103 Du-Bro Products Inc10 DynaKnight industries106 Dynathrust Props Inc102 Edson Enterprises103 Electroline Models102 Addis Elmore138 Bill Evans Aircraft134 FAI Model Supply97 138 FHS Supply & Mfg Co134 Flightilne Shirts124 Flyline Models115 Fourmost Products111 Fox Manufacturing Co43 Full Command Systems107 Fuits Tooling134 Futaba Corp America139 Futurfilte127 Gemini Models Inc106 Gibbs Hobby & Research97 Carl Goldberg Models11 Gorham Model Products14 Great Lakes Model & Mold Co108 Great Planes Model Mfg Co13 Grish Brothers110 132 Hardware Systems108 115 Hayes Products45 Hobby Barn92-95 Hobby Capitol Distributors8 Hobby Horn96 Hobby Lobby International4-7 Hobby Radio Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls 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328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0
Edition: Model Aviation - 1982/05
Page Numbers: 54, 55, 135, 136, 137, 138, 140
Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model Products129 Carolina-Taffinder132 Champion Hobbies126 Circus Hobbies Inc116-121 Clark Airscrew136 Columbia Model Crafts114 Consumers Hobby Corp112-113 Contempo Enterprises49 Coverite47 Jim Crocket Replicas135 DG Products8 DGM Industries111 DW Products135 DaCa Model Products137 Davey Systems Corp130 Davis Diesel Development103 Du-Bro Products Inc10 DynaKnight industries106 Dynathrust Props Inc102 Edson Enterprises103 Electroline Models102 Addis Elmore138 Bill Evans Aircraft134 FAI Model Supply97 138 FHS Supply & Mfg Co134 Flightilne Shirts124 Flyline Models115 Fourmost Products111 Fox Manufacturing Co43 Full Command Systems107 Fuits Tooling134 Futaba Corp America139 Futurfilte127 Gemini Models Inc106 Gibbs Hobby & Research97 Carl Goldberg Models11 Gorham Model Products14 Great Lakes Model & Mold Co108 Great Planes Model Mfg Co13 Grish Brothers110 132 Hardware Systems108 115 Hayes Products45 Hobby Barn92-95 Hobby Capitol Distributors8 Hobby Horn96 Hobby Lobby International4-7 Hobby Radio Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls scaler 15-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 sizes15-30 35-40$125 No 291Cap 20 40-powered scale PC French aerobatic plane Low wing tail dragger 2 sheets . $750 No 299GeeBee Sr Sporteter PC -scale Haffke 91 power Prototype span 30 ft 2 sheets$1175 No 302Mini F-16 PC Sarpolas 048 ducted fan sport flier 2-ch Balsa wings tail fuse structare $275 No 307Pegasus PC Watsons giant saper sailplane features flaps spoilers T-tail 166 wingspan$675 No 309Super Brigadier PC Doc Mathews apdate theSOs favorite Easyflying 3-ch for1 9- 25-power$475 No 3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Twosheets. $625 No 314Drake II PC Ken Willards flying boat 3-ch 15-power Fly land removable gear No 317Schwaizer TG3-A PC Sport Scale Sailplane Jack Miner has 11-ft span 3-nh Two sheets 0 No 319Dirt Stripper PC Sport flier 19-40 3-ch Ragged tail-dragger roagh helds$300 No 321TC Two CL Sport Stant twin 20s featares tricycle gear profile faselage Sarpolas No 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355Santos-Dumont 14-bis PC Sport-Scale canard bipe for1 5-power 3-nh spans 56 2 sheets$575 No 356Maula Lunar Rocket PC -Scale spans 925 5-nh flaps 12 no engine$1200 No 357SE-B CL Sport-Scale power Biplane WW I-type$200 No358Pieces PP Indoor Easy B Pabber-power contest-winner W Van Gorder$100 No 359Black Widow PC Pan-Scale twin two lOs 4-nh PC spans 56 WW II sight fighter $675 No 360Dragon CL Slow Combat winner has foam wing ases 36-power$500 No 361Electric country Boy PP Pecord-holding daratios craft 02 motor$200 No 362Suparcat PC Half-A Pylon Pacer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364Neutron Star PC Sleek 40-size Pattern flierwith tail dragger retracts enclosed pipe bailt-up$525 OeOSeeOee@@@eeee@@OOSeOo@OOOSO Circle numbersj planss wish order 0 131168225239253259 285291299302307309 322323325326 340341342343344345 351352353354 362363364365366367 Pleaseprintcarefully 260262269278282 310314317318321 328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0
Edition: Model Aviation - 1982/05
Page Numbers: 54, 55, 135, 136, 137, 138, 140
Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model Products129 Carolina-Taffinder132 Champion Hobbies126 Circus Hobbies Inc116-121 Clark Airscrew136 Columbia Model Crafts114 Consumers Hobby Corp112-113 Contempo Enterprises49 Coverite47 Jim Crocket Replicas135 DG Products8 DGM Industries111 DW Products135 DaCa Model Products137 Davey Systems Corp130 Davis Diesel Development103 Du-Bro Products Inc10 DynaKnight industries106 Dynathrust Props Inc102 Edson Enterprises103 Electroline Models102 Addis Elmore138 Bill Evans Aircraft134 FAI Model Supply97 138 FHS Supply & Mfg Co134 Flightilne Shirts124 Flyline Models115 Fourmost Products111 Fox Manufacturing Co43 Full Command Systems107 Fuits Tooling134 Futaba Corp America139 Futurfilte127 Gemini Models Inc106 Gibbs Hobby & Research97 Carl Goldberg Models11 Gorham Model Products14 Great Lakes Model & Mold Co108 Great Planes Model Mfg Co13 Grish Brothers110 132 Hardware Systems108 115 Hayes Products45 Hobby Barn92-95 Hobby Capitol Distributors8 Hobby Horn96 Hobby Lobby International4-7 Hobby Radio Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls scaler 15-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 sizes15-30 35-40$125 No 291Cap 20 40-powered scale PC French aerobatic plane Low wing tail dragger 2 sheets . $750 No 299GeeBee Sr Sporteter PC -scale Haffke 91 power Prototype span 30 ft 2 sheets$1175 No 302Mini F-16 PC Sarpolas 048 ducted fan sport flier 2-ch Balsa wings tail fuse structare $275 No 307Pegasus PC Watsons giant saper sailplane features flaps spoilers T-tail 166 wingspan$675 No 309Super Brigadier PC Doc Mathews apdate theSOs favorite Easyflying 3-ch for1 9- 25-power$475 No 3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Twosheets. $625 No 314Drake II PC Ken Willards flying boat 3-ch 15-power Fly land removable gear No 317Schwaizer TG3-A PC Sport Scale Sailplane Jack Miner has 11-ft span 3-nh Two sheets 0 No 319Dirt Stripper PC Sport flier 19-40 3-ch Ragged tail-dragger roagh helds$300 No 321TC Two CL Sport Stant twin 20s featares tricycle gear profile faselage Sarpolas No 322church Midwing RC/a-scale Posenntockfor 60-power Prototype spans 26 ft 2 sheets$1000 No 323Super Voodoo CL Fast Combat John J0 features bailt-ap wing fast construction wins No 325comowdom PC Tesaco-class Old-Timer Oslan updates Shereshews classic 3-ch for29-power 2 sh $1000 No 325Taylor cub pc Don Sralls Schoolyard-Scale 049s 2-3 ch Spans 50 is$350 No 325BristolScoutDRClltmschsPrecisiosScaleA-sizelspas73 bipeforBi power4sheets$1650 No 330Stitchin PC Pandolphs advanced trainer 4-ch 10-15-power Variable stability featares$375 No 332Zephyr PC Small 2-nh glider hand-launch tow thermal slope soaring$200 No334T-3 Mostly-foam-board 3-nh trainer 19-40 power Paggedl Three sheets$850 No 335Sopwith Dolphin FF Bill Noosess Jumbo-Rubber scale great WW I-vintage biplane$175 No 337Super Akro-1 chips c Scale-like staster 5-nh 1 smoke valve 40-power 2 sheets No 338Rearwin Jr PC Don Mathews Sport Scale 4-nh 40-power Monoplane$525 No 340Mosaic Stunner CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No341Brown B-2RC Scale-like sport flier 4-nh 19-29-power Rune Osinkee hot 25$500 No342crosswind PC Bill Evens semi-sailplane 3-nh 19-power$350 No 343Wasp VI PP Mike Stoys Nets-winning Oatdoor HLG$100 No 344Misty CL Scale Pacer Class II Also fly Moase just sport$100 No345La JolitaCL /A Scale Pacer Class II also sport Moase$100 No 346Rivets CL Scale Pacer Class II also sport Mosse$100 No347Space Shuttle PC Sport-Scale glider 2-nh laanch mother plane$175 No 349Onastap PC Trainer has very forgiving flying qaalities 3-nh 10-25 power$425 No 349Devis D1K PP Scale flying outdoors CO-2 power Spans 21 in$175 No 350Electric Spitfire PC Fun-Scale 15/25 electric 20130 glow 3-nh spans 6 ft$750 No351Dakota Granda PC Easy-flying bipe 60-power 4-nh. scaled-ap 1950 PP$625 No 352Walking Matilda PF Wakefield Pabber placed 2nd 1975 PP Champs$175 No 353Excitetion CL Sleek 46-powered super-Stuster contest-proven$400 No 354Merlyn PC Giant 155-in spas Sailplane ases 3 PC channels$750 No 355Santos-Dumont 14-bis PC Sport-Scale canard bipe for1 5-power 3-nh spans 56 2 sheets$575 No 356Maula Lunar Rocket PC -Scale spans 925 5-nh flaps 12 no engine$1200 No 357SE-B CL Sport-Scale power Biplane WW I-type$200 No358Pieces PP Indoor Easy B Pabber-power contest-winner W Van Gorder$100 No 359Black Widow PC Pan-Scale twin two lOs 4-nh PC spans 56 WW II sight fighter $675 No 360Dragon CL Slow Combat winner has foam wing ases 36-power$500 No 361Electric country Boy PP Pecord-holding daratios craft 02 motor$200 No 362Suparcat PC Half-A Pylon Pacer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364Neutron Star PC Sleek 40-size Pattern flierwith tail dragger retracts enclosed pipe bailt-up$525 OeOSeeOee@@@eeee@@OOSeOo@OOOSO Circle numbersj planss wish order 0 131168225239253259 285291299302307309 322323325326 340341342343344345 351352353354 362363364365366367 Pleaseprintcarefully 260262269278282 310314317318321 328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0
Edition: Model Aviation - 1982/05
Page Numbers: 54, 55, 135, 136, 137, 138, 140
Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model Products129 Carolina-Taffinder132 Champion Hobbies126 Circus Hobbies Inc116-121 Clark Airscrew136 Columbia Model Crafts114 Consumers Hobby Corp112-113 Contempo Enterprises49 Coverite47 Jim Crocket Replicas135 DG Products8 DGM Industries111 DW Products135 DaCa Model Products137 Davey Systems Corp130 Davis Diesel Development103 Du-Bro Products Inc10 DynaKnight industries106 Dynathrust Props Inc102 Edson Enterprises103 Electroline Models102 Addis Elmore138 Bill Evans Aircraft134 FAI Model Supply97 138 FHS Supply & Mfg Co134 Flightilne Shirts124 Flyline Models115 Fourmost Products111 Fox Manufacturing Co43 Full Command Systems107 Fuits Tooling134 Futaba Corp America139 Futurfilte127 Gemini Models Inc106 Gibbs Hobby & Research97 Carl Goldberg Models11 Gorham Model Products14 Great Lakes Model & Mold Co108 Great Planes Model Mfg Co13 Grish Brothers110 132 Hardware Systems108 115 Hayes Products45 Hobby Barn92-95 Hobby Capitol Distributors8 Hobby Horn96 Hobby Lobby International4-7 Hobby Radio Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls scaler 15-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 sizes15-30 35-40$125 No 291Cap 20 40-powered scale PC French aerobatic plane Low wing tail dragger 2 sheets . $750 No 299GeeBee Sr Sporteter PC -scale Haffke 91 power Prototype span 30 ft 2 sheets$1175 No 302Mini F-16 PC Sarpolas 048 ducted fan sport flier 2-ch Balsa wings tail fuse structare $275 No 307Pegasus PC Watsons giant saper sailplane features flaps spoilers T-tail 166 wingspan$675 No 309Super Brigadier PC Doc Mathews apdate theSOs favorite Easyflying 3-ch for1 9- 25-power$475 No 3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Twosheets. $625 No 314Drake II PC Ken Willards flying boat 3-ch 15-power Fly land removable gear No 317Schwaizer TG3-A PC Sport Scale Sailplane Jack Miner has 11-ft span 3-nh Two sheets 0 No 319Dirt Stripper PC Sport flier 19-40 3-ch Ragged tail-dragger roagh helds$300 No 321TC Two CL Sport Stant twin 20s featares tricycle gear profile faselage Sarpolas No 322church Midwing RC/a-scale Posenntockfor 60-power Prototype spans 26 ft 2 sheets$1000 No 323Super Voodoo CL Fast Combat John J0 features bailt-ap wing fast construction wins No 325comowdom PC Tesaco-class Old-Timer Oslan updates Shereshews classic 3-ch for29-power 2 sh $1000 No 325Taylor cub pc Don Sralls Schoolyard-Scale 049s 2-3 ch Spans 50 is$350 No 325BristolScoutDRClltmschsPrecisiosScaleA-sizelspas73 bipeforBi power4sheets$1650 No 330Stitchin PC Pandolphs advanced trainer 4-ch 10-15-power Variable stability featares$375 No 332Zephyr PC Small 2-nh glider hand-launch tow thermal slope soaring$200 No334T-3 Mostly-foam-board 3-nh trainer 19-40 power Paggedl Three sheets$850 No 335Sopwith Dolphin FF Bill Noosess Jumbo-Rubber scale great WW I-vintage biplane$175 No 337Super Akro-1 chips c Scale-like staster 5-nh 1 smoke valve 40-power 2 sheets No 338Rearwin Jr PC Don Mathews Sport Scale 4-nh 40-power Monoplane$525 No 340Mosaic Stunner CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No341Brown B-2RC Scale-like sport flier 4-nh 19-29-power Rune Osinkee hot 25$500 No342crosswind PC Bill Evens semi-sailplane 3-nh 19-power$350 No 343Wasp VI PP Mike Stoys Nets-winning Oatdoor HLG$100 No 344Misty CL Scale Pacer Class II Also fly Moase just sport$100 No345La JolitaCL /A Scale Pacer Class II also sport Moase$100 No 346Rivets CL Scale Pacer Class II also sport Mosse$100 No347Space Shuttle PC Sport-Scale glider 2-nh laanch mother plane$175 No 349Onastap PC Trainer has very forgiving flying qaalities 3-nh 10-25 power$425 No 349Devis D1K PP Scale flying outdoors CO-2 power Spans 21 in$175 No 350Electric Spitfire PC Fun-Scale 15/25 electric 20130 glow 3-nh spans 6 ft$750 No351Dakota Granda PC Easy-flying bipe 60-power 4-nh. scaled-ap 1950 PP$625 No 352Walking Matilda PF Wakefield Pabber placed 2nd 1975 PP Champs$175 No 353Excitetion CL Sleek 46-powered super-Stuster contest-proven$400 No 354Merlyn PC Giant 155-in spas Sailplane ases 3 PC channels$750 No 355Santos-Dumont 14-bis PC Sport-Scale canard bipe for1 5-power 3-nh spans 56 2 sheets$575 No 356Maula Lunar Rocket PC -Scale spans 925 5-nh flaps 12 no engine$1200 No 357SE-B CL Sport-Scale power Biplane WW I-type$200 No358Pieces PP Indoor Easy B Pabber-power contest-winner W Van Gorder$100 No 359Black Widow PC Pan-Scale twin two lOs 4-nh PC spans 56 WW II sight fighter $675 No 360Dragon CL Slow Combat winner has foam wing ases 36-power$500 No 361Electric country Boy PP Pecord-holding daratios craft 02 motor$200 No 362Suparcat PC Half-A Pylon Pacer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364Neutron Star PC Sleek 40-size Pattern flierwith tail dragger retracts enclosed pipe bailt-up$525 OeOSeeOee@@@eeee@@OOSeOo@OOOSO Circle numbersj planss wish order 0 131168225239253259 285291299302307309 322323325326 340341342343344345 351352353354 362363364365366367 Pleaseprintcarefully 260262269278282 310314317318321 328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0
Edition: Model Aviation - 1982/05
Page Numbers: 54, 55, 135, 136, 137, 138, 140
Free Flight DURA TION Bob Meuser RIB TEMPLATE FOLLOW-UP Since pre sented non-skid devices rib templates February 1982 issue several others have come attention OC Stewart using templates 1/32-in plywood aluminum puts two dabs rubber cement template dabbing will several ribs Any cement remains ribs can removed simply rubbing finger Cyrus Stow Tom Sanders suggest placing template has aluminum work soft wood surface hammering nail through couple strategic locations resulting burr bites balsa rib stock doesnt provide neat pinholes aligning ribs prior stacking Romak Meuser scheme does step probably unnecessary inasmuch completed struc ture willor should besanded before covering anyhow good three better suppose now well aware aerodynamic breakthrough decadewinglets check out column January 1978 August 1977 issues interesting note total impact terrific development upon competition Free Flight model aviation has absolute zero winglet two cant thing small increase span cant limited-span events Pennyplane Payload Cargo FAI Indoor etcnothing what soever has happened rm wrongthat happened once long about 49 best recall tell about OK Meanwhile winglets have appeared several commercial aircraft Off Ive seen things about multiple winglets Im sure handful modelers have messed around know has Ill tell about Meusers Folly No 372 sometime nothing real happened such commercial application outstand ing model Recently bumbled application shown sketch developers Cran field Institute Technology England have applied tri-winglets tips crop-duster aircraft cite 10% fuel saving plus better distribution crop-dusting dust call fool things sails rather winglets proper name already well aware indignities English have imposed Amer ican Language sol wont dwell Someone should publish American-English EnglishAmerican dictionary sometime derive benefit winglets dont stick simply old airfoils wing tip old angles must done right forward winglet must set rather large negative angle incidence since airflow curling up around tip winglet flies positive angle attack relative local airflow direc tion forward component lift can result next foil series lives airflow envi ronment has already straightened out preceding foil must set lessnegative angle incidence forth After former model-shop proprietor Richard Coke-bottle Whitcomb laid discovery world several models appeared scene using what calledwinglets winglets tip plates Tip plates simply plates set parallel aircraft center line glued wing tips have kicking around 40 years Such tip plates suppress formation tip vortexes thereby reduce induced drag thats good introduce drag own often being ahead CG require larger fin adds drag too aint good So its delicate balance costs vs benefits game play frequently blokes Cranfield certainly deserve credit commercially viable development Heres get neat leading trailing edge seams youre covering tissue Bob has some words column too Snndpapcr 7 34 1{ 7 4 G 54 Model Aviation Campbells Custom Kits latest ofleringMerlin 2 contest-proven Outdoor Hand-Launch Glider TE 2 1 Enar8ec / / I/ ltiple-winglet concept have ever noticed turkey vulture cant help agree God must hold patent rights Two-piece rib idea Ed Hopkins shown sketch appeared Ralph Preys Satellite Cutting rectangular spar holes ribs slipping ribs over spars required Nostalgia Old-Timer class models headache avoided Eds method Ed uses hard square strips lower part softer material upper part gives higher proportion hard wood near leading trailing edges ribs tend weakest Sneaky Super-simple torque meter sketch shows torque meteror perhaps torque indicator would accurate has no scalethat can tailored suit rubber-power models class Indoor microfilm-covered models Wakefields can made matter minutes cost about zero doesnt have scale fancy torque meters simply wind until wires line up wing normal mannerthat first iope structure put tissue place slop dope thinner outside surface tissue soften dope underneath rub tissue forefinger until well stuck down 2 slop bit dope along TE rub tissue around edge TE forefingersince tissue doesnt like go around sharp corners itll tend pop off can overcome putting little spit Continued page 135 latest high-tech aerodynamics Wingtip feathers reduce wings induced drag takes lot experimentation calculation L get angles spacing right lA new way skin Old-Time cat days yore models used rectangular spars running through middle ribs real pain cut out slots What could easier Use hard balsa bottom pieceit helps beef up rib LE TE joints wont attempt give specific wire sizes specific motor sizes smaller wire greater sensitivity wire too small will yield break So use same size wire would prop shaft perhaps size smaller Also order get high sensitivity part twists should long possible anything longer about 6 becomes bit awkward Calibration performed winding test motor tweeking wires until ends align Classier home-brew torque meters designed Fred Pearce Jim OReilly have appeared recently Free Flight NFFS DigesI similar presented June 1970 column American Aircraft Modeler time flies proper tissue covering cover wing colored tissue rearmost vertical parts trailing edges often end up uncovered therefore somewhat unsightly recent news letter cure suggested doctor up trailing edge felt pen appropriate color Felt pens imaginable color available proper art-supply shops incidentally Neat lution didnt proper covering job first place proper covering job surfaces edges covered overlaps nonexistent minimal feathered dont show Heres youd trailing edge see sketches example 1 Cover bottom I'ilflUSiC WIV0 ind cznc soLder UQ1zQuEmEtE1Q May 198255 Simple convenient cheap Its actually torque indicator rather torque meter though because has no calibrated scale Butyou could make Wind up motor fully turn before breaks bend wire cut ends line up Repeatable VJooden Ueam Balance Plan Set Micro-Air modelers will want have useful item shops Weighs 001 oz 1 lbl Kit includes principle operation construc tion notes component fabrication assembly illustrations photos heavy paper stick-on templates Construct materials evening Only $3 column Fine Quality flying Models 45 p1-iCatalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4e AJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 date RiverviewOld Time Eagles Aero Picnic August 16 1981 place Elmwood Park NY Riverview RC Flyers field picnic portion meet boiled frankfurters served sauerkraut soda devoured spectators well fliers weather ideal During lunchtime Tony Bonetti just won National Pattern Champion ships Texas put precision flight demon stration just super During day Joe Jaster offered Jr Sr wanted try flying RC opportunity using model buddy box system well-received spectators took advantage opportunity Riverview RCOld Time Eagles Aero Picnic winners first place Bob Allen Hasbrouck Heights NJ second place Tony Basilotta Lodi NJ third place Alfredo Austria Jr Passaic NJ Trophies presented winners An Aero picnic gathering serves purposes way generate inter-club activity between various club members encourages young ster newcomer get involved sport contest fliers get work together way intermingling modelers interest areas feeling fellowship am sure will realize place type event clubs calendar whether goal promotion sociable just plain friendly basic rules I All events based 2-mm estimated touch-down subject change CD point scored second airborne Maxi ANOTHER GREAT WiNDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Winder $100 FOR CATALOG mum score 1 20 points Contestant may take off hand-launch 2 A flight over 2 mm zero score 3 No timing aids kind allowed including friends Contestant must estimate touch down disqualified 4 Contestant may make flights desires 5 Highest single score winner case tie second flight will determine winner Try some time FF Duration/Meuser Continued page 55 foretinger rubbing tissue down again Somehow spit will soak through wet dope soften tissue causing conform sharp corner 3 4 after dope has set bit doesnt have completely dry trim off excess tissuebut scissors razor blade sandpaper brand new 180-220 grit nothing else slight tug excess tissue sanding will tell youve sanded enough 5 same top surface wing youre business 6 same technique used leading edge take care angles hold sanding block youll sand through tissue wrong spot wasntjust being arbitrary implied bottom surface should covered before upper surface Free Flight modeling fre quently use undercambered airfoils Getting tissue stick bottoms ribs some times chore Lots predoping before applying tissue lots forefinger rubbing applying tissue will usually take care FORMULA 1 HIGH PERFORMANCE PROPELLERS D U AIRSCREW EACH PROPELLER HAND BALANCED Hard Eastern Maple Accurate airfoil pitch 0 Ca 85X65R15J Additional propellers available loxe0 11x7 11x7a 11X8 Ae CUSTOM DESIGN UPON REQUEST OPRECT SALES ORLY EU vsooucs 5534 CRYSTAL COURT SARTA ROSA CA RS4OA PROSE TOY 52RRSSA PHad 5100 p oAR Postag 5 handling RISE FOR COR oAs CA SEE ADO R% TAX STERLING MODELS Priced Right 82 tRea1 Sporty Kit FS 38 Wingspan 40-5/16 Scale 2-1/8 ice $4595 For Radio Contrcl Control Line 1525 Engine ttPiper Vagabond Kit K7 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power PENNY PINCHER Wingspan 13 GET IN ON ALL THE FUN WITH ANY OF THESE NEAT FULL COLOR GLIDERS YOU CAN ASSEMBLE IN JUST MINUTES $198 EACH CHOOSE ANY ONE OR ALL SIX HELLCATCESSNA 180 MUSTANGSABRE JET PIPER CUB T38 THUNDERBIRD Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Cl StateZip May 1982 135 Improve Engine Performance Up 30% New Engine MAKE READr 049 thru 065 R/C plane boat & race car also control line Complete dis-assembly Deburr check fit clean & re-assemblyREADY TO RI NH $2995 plus $5 postage Leland Morton LM Hobbies 115 Cochran Mesquite TX 75181 CANADAS ONLY RC TRADE SHOW. CANADAS ONLY RC TRADE SHOW ADAS ONLY WITH THE CO-OPERATION OF CHANNEL 11 BURLINGTON SINCE 1970 CANADAS LARGEST 1982 model aircraft ____ iXHrcDmoi NELSON RECREATIONAL COMPLEX 4235 NEW ST 0 BURLINGTON ONTARIO CANADA BEST TRADE SHOW BOOTH gwrrnsSION--SATUROAY AdUI VISIT YOURS3Oam L HOBBY pg iPin FOR MORE DETAILED INFORMATION OR CONTACT FRANK ANDERSON 1416 6245922 DAYS.4161 276S278 EVOS MAIL TO 48S MEADOWS BLVD UNIT 1MISSJSSAUGAONT CANADA L4Z iHT SIZES AVAILABLE 48-2027-8 114 24-11 24-10 22-6 20-12 20-10 20-8 20-6 18-10 18-8 18-6 17-1216-6 Send S200 refundable first purchase catalogue price list See local dealer order direct pay postage handling shipments INDUSTRIES M ONT CANADA LOG IWO 936-2131 situation sometimes doesnt work touching up necessary consists slop ping bit dope between tissue bottom rib forefinger rubbing Thats no big deal top-surface covering hasnt already cut off pass Compound curvescowls wheel pants etc pain Best route slit tissue tends overlap use lots spit fore finger keep tissue pliable After tissue slit tends bunch up let overlap however wants dope about half dry cut through both layers tissue overlaps remove overlapped waste end up perfectly butt-jointed tissueno gaps no overlaps Eleganti Elegant covering jobs might make win sure make feel lot better about losing Theres funny thing about competition rules often escapes notice us involves AMA National Records see records tied rules change rule might change specifications used establish record What Im trying get new revised competition rule may result existing National Record being vacated because model specifications flight site limits have changed previous years decision whether keep existing National Records after rules change usually decided AMA HQ course HQ cant really decide anythingits people HQ have deciding chore has usually fallen shoulders AMA Technical Director Frank Ebling has really matter con venienceconvenient everyone except Frank Ebling necessity Deadlines communi cations have entered problem see its really responsibility various Contest Boards make decisions keeping vacating records case Free Flight FF Contest Board body always responsibility interpreting rules AMA HQ staff has it result implied delegation authority FFCB AMA responsibility resides has always resided FFCB During rules change cycle press deadlines other business frequently clouds vision FFCB members dont see connection between proposed rule changes records frequently occurs realization records will affected does occur until after Final Voteand new rule adopted fact two FFCB members talked recently still havent thought much about some five months after cast C 0 Cl C, 0 0 C z 0 U 0 z C H U C U 0 0 C- z 0 U 0 z C C H 0 CC OC 0 0 0 C U 0 U 0 z U C H U 0 C C 0 0 0 1 36 Model Aviation 0 0 0 U CU 0 H 2 -C z 0 U 0 U 2 U 0 0 U CU 0 H 2 z 0 U 0 U 2 U 0 0 U H 2 0 z 0 U 0 U 0 U 0 0 U CU 0 C H 2 Authentic 1/7 ScaleBYRON Mdsg~ hlJskies Inc Ida Grove Iowa 51445 ps ill 364 3I Byron Originals proudly announces release latest ducted fan adventure world famous A-4 Skyhawk Like Byron Originals kits super scale jet fighter designed manufactured packaged complete kit concept mind other manufacturers content offer semi-kits Byron Originals does whole lot item needed complete model except fan unit engine radio paint glue cluded addition latest state-of -theart construction methods materials A-4 package offers impressive list scale appointments include highly detailed fiberglass fuselage canopy avionics cover rudder plus scale strut assemblies landing gear pods cockpit interior extensive decal set optional drop tanks Exclusive plug-in wings aileron linkages quick easy transport just few unique A-4 standard features Retracts can also easily incorporated added scale realism Flight characteristics just impressive Powered proven Byro-Jet fan tuned pipe system A-4 true scale performer patented Byro-Jet promises plenty power reserves both hard surface grass field take-offs including usual aerobatic manuevers things considered A-4 Skyhawk Byron Originals masterriiece modern modeling technology Write call Kits now stock availableByron Originals immediate deliveryO Box 279 Ida Grove Iowa 51445 Ph 712-364-3165 Powered Patented ByrJet Final ballots fundamental problem has seemed some time really needs fixing policy rules changes will affect National Records has knowledge never published least widely known feel way particular proposed rules change might affect current records would should have strong effect FFCB member votes does have effect effect should determined before FFCB member votes just theoretical discussion No Frank Ebling has stack record applications sitting desk AMA HQ right now cant accepted until FFCB decides recent rules changes will affect some previous AMA National Records Theyll have vote Indoor heavily impacted area ii AMA ceiling-category records will affected Easy B will affected twice Outdoor P30 affected directly now have 2-mm maxes instead 3-mm plus Category Gas eventswe now have VTO/ROG enginenm-time bonus Category ROW affected problems Indoor except Easy B result Phil Klintworths successful proposal adopt FAI ceiling height categories limits new Cat upper limit lower previous AMA Cat limit new Cat II upper limit greater previous AMA Cat limit would seem old Cat records could become new Cat II records same reasoning previous AMA Cat III records could become new Cat IV records previous Cat II upper limit however greater both new Cat II Cat III limits previous Cat II records could become new Cat IV records provided exceeded old Cat III records Got Continued Daco mODEL IPORTTOTE * Model Sport Tote coonpact liqhtweight 21o tOa93/t * Special coated sutace fuel water resistant * Carries starter 12o battery pnwer panel transmitter & has hooks onilint glow plag & starter cards lrra 2 barr5 pnar pr1 Alawinan folding legs * DC Producti Inc14573 Grover Itroet ONLY 17995 4 * Nem Model Crodlos OniOn models field repairs wipIng runelago cradles OdjuOf up Id nwidell aod telescope May 1982 137 SPECIFICATIONS WingSpan45Retail value-- $29200 Wing Area762 sq inYour cost -- S2482fl Wing Loading30 oc per sq ft Length68 Ready-to-fly weightIa lbs Iwith retracts10 Ya nels 45 w/ra Power5chnL 60s No high nitro fuels requi Send $200 complete A-4 Information Pack Model No M5T Both lid sides oen access anbrea able nra ** Holdc oucer towels nod teal See Dealer First Omeho flbraho 66144 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDE AMA Membership36 Ace R/C Inc110 Aerolite Products Inc129 Aeromarine Enterprizes102 AeroScale 8253 Aerotrend Products110 Air Design123 AirtronicsInside Front Cover 99 Al Alman 128 Americas Hobby Center pplied Design Corp 127 Richard G Barron 129 Bavarian Precision Products Co ehrens Plan Service 131 Black Hawk Models 123 Boynton & Associates 103 Brownsell Flag & Decal 131 Buckeye Balsa Co 127 Burlington RC Trade Show 136 Byron Originals97 130 137 Cannon R/C Systems115 Canton Model Products129 Carolina-Taffinder132 Champion Hobbies126 Circus Hobbies Inc116-121 Clark Airscrew136 Columbia Model Crafts114 Consumers Hobby Corp112-113 Contempo Enterprises49 Coverite47 Jim Crocket Replicas135 DG Products8 DGM Industries111 DW Products135 DaCa Model Products137 Davey Systems Corp130 Davis Diesel Development103 Du-Bro Products Inc10 DynaKnight industries106 Dynathrust Props Inc102 Edson Enterprises103 Electroline Models102 Addis Elmore138 Bill Evans Aircraft134 FAI Model Supply97 138 FHS Supply & Mfg Co134 Flightilne Shirts124 Flyline Models115 Fourmost Products111 Fox Manufacturing Co43 Full Command Systems107 Fuits Tooling134 Futaba Corp America139 Futurfilte127 Gemini Models Inc106 Gibbs Hobby & Research97 Carl Goldberg Models11 Gorham Model Products14 Great Lakes Model & Mold Co108 Great Planes Model Mfg Co13 Grish Brothers110 132 Hardware Systems108 115 Hayes Products45 Hobby Barn92-95 Hobby Capitol Distributors8 Hobby Horn96 Hobby Lobby International4-7 Hobby Radio Shop124 Hobby Shack16-17 70-71 Hobby Swap News91 Hobby Village114 Homer Sales32 Hotel Harrington133 indy R/C Sales Inc100-101 J-5 Enterprises98 K&B Manufacturing Co138 K&S Engineering128 Kite Lines Magazine96 Kitty Hawk Models96 Kraft R/C Electronics129 Kraft Systems23 Kustom Kraftsmanship128 LM Hobbies135 Left Bank R/C Distributors122 Lltco Systems21 MAC Show60 Majestic Models135 Jim Messers Quality Products133 McDaniel R/C Service99 Micro-Air111 Midwest Products Co33 MiIicott Corp132 Miniature Aircraft Supply107 Model Engineering Norwalk131 Modelmania131 Model Merchant133 Model Rectifier Corp side Back Cover Mr Gs Products & Supply124 Peck-Polymers107 Pica Products35 Dave Platt Models125 Plaza Hobby Craft132 Prince Georges RC Club108 Prop Shop130 RAC Products114 RJL industries131 RLF Products125 R&M Quarter Scale Specialist128 Radio Control Imports123 Repla-Tech international107 Rhom Products109 Roush Mfg Co98 Sailplane Factory125 Satellite City1 RLShanko103 Sheldons Hobby Shop14 Sig Manufacturing Co9 Slim Line Mufflers32 Bob Smith R/C Aircraft97 Sterling Models135 Sullivan Products111 Styrocraft Models122 Superwings114 THS Distributors122 Tatone Products22 LR Taylor & Co96 Technopower II126 Top Flite Models2 Tower Hobbies104-105 Twinn-K Inc109 US Quadra106 WE Technical Services115 Williams Brothers122 Windsor Propeller Co108124 World Engines ack6over CA Zaic Co109 Zenith Aviation Books15 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS IND8 rules changes passed FFCB landslide averaged 8375 yeas 2625 nays ever isnt crystal clear should have placed domestic Indoor aeromodeling IFVh FhFNhATHIS FORM HlUIiEEIiiiiYA ND ATTACH MAILING lLSJ\EEIEILEErFROM RECENT IISSUE LET US KNOW WHERE YOU ARE IWhen move please let us know advancesix weeks re-I Iquired change address Attach current MA mailing labelI check appropriate box mail Subscription DeptI I Model Aviation 815 Fifteenth St NW. Washington DC 20005 Check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1800 12 months US possessions elsewhere Including Canada Mexico $2400 US Schools $900 US Libraries $1250 NAMEI ADDRESS I CiT~ _______________ I ** ** * * * *** * ** * ** ** ** * ** * *** * WANDITTM * PAT PEN *Peel off Stick Abrasives * *___________ * *Weordry * * * * *lone year warranty *10 ft CORD * * A Keen Machine gives exceptional K *sanding control excellent finish.K * *Model Builder Special mci * 05two flat half-round andK K *five 6 grits *Additional Wands Abrasives available * Add $300 shippingTexas 5% Sales Tax K *anois ELMOREEve No 214 288 5789 K * PO Bon 266 uite Texas 75149 *K atched Performance system TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine K&B FUELSKAB GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH KAB Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER KAB SUPER POXY PRIMER K&B SUPER POXY FAINT KAB MIXING CUPS lives hands FALa body hasnt demonstrated outstanding proficiency keeping its own house ordersince its likely have little no concern impact rules changes fly events say Easy B maintain National Records Although intent AMA rules changes ws align AMA FAI rules nothing three proposed new rules ceiling category ceiling measurement defini tion end flight would have auto matically changed AMA rules conform changes FAI rules As consequence fact based fact AMA FAI rules change cycles no way synchronized could much 5-year 3-month delay getting new AMA rules changed agree future FAI rules changes Oh well best can Beam balance kit balance similar overall layout pre-war Jasco balance Continued page 140 138 Model Aviation another problem area Nine new changes Indoor rules generated attempt bring AMA rules line FAI international rules nine proposed ___________________________________________zip ______________ MODEL AVIATION 815 FIFTEENTH ST. NW WASHINGTON DC 20005 ZONA SAWS The one wood handle good blade Razor *200 $210 Sabre * 400 -$185 Sa1OO-$369 Roplacorneno blados available yoar doalor FAI Model Supply PO Box 3057 Torrance CA 90510 USA No 365 Seamaster$1100 RC Flying boat 40 power 4-ch Add-on gear landplane Two sheets No 366 Truant$225 FF Pert all-sheet-balsa sport flier 02 power No 367P-39 Airacobra$1275 CL Sport-Scale uses water-cooled 45 mounted aft extension prop shaft retracts Two sheets No 368 Space Shunle II$550 RC Larger improved version Hux glider uses 3-ch No 131Gee Bee Model Y 40-powered RC stand-off scale great old-time racers$500 No 169Simmer PC spectacalar flying wing 15 nose-moanted tractor$300 No 225Ole Reliable PC 70 version 38 old-timer REM controls 19-25$425 No 239Blue Birds PC Ken Willards formation plane 4-ch 10$375 No 253Mitchell B-25 PC 4-ft AA twin Ace foam panels Well-behaved$350 No 259chambermaid FF Bill Henss superlative rabber-powered scale winner $200 No 260Waco custom cabin c Don Srslls scaler 15-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 sizes15-30 35-40$125 No 291Cap 20 40-powered scale PC French aerobatic plane Low wing tail dragger 2 sheets . $750 No 299GeeBee Sr Sporteter PC -scale Haffke 91 power Prototype span 30 ft 2 sheets$1175 No 302Mini F-16 PC Sarpolas 048 ducted fan sport flier 2-ch Balsa wings tail fuse structare $275 No 307Pegasus PC Watsons giant saper sailplane features flaps spoilers T-tail 166 wingspan$675 No 309Super Brigadier PC Doc Mathews apdate theSOs favorite Easyflying 3-ch for1 9- 25-power$475 No 3101930 Fleet Biplane PC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Twosheets. $625 No 314Drake II PC Ken Willards flying boat 3-ch 15-power Fly land removable gear No 317Schwaizer TG3-A PC Sport Scale Sailplane Jack Miner has 11-ft span 3-nh Two sheets 0 No 319Dirt Stripper PC Sport flier 19-40 3-ch Ragged tail-dragger roagh helds$300 No 321TC Two CL Sport Stant twin 20s featares tricycle gear profile faselage Sarpolas No 322church Midwing RC/a-scale Posenntockfor 60-power Prototype spans 26 ft 2 sheets$1000 No 323Super Voodoo CL Fast Combat John J0 features bailt-ap wing fast construction wins No 325comowdom PC Tesaco-class Old-Timer Oslan updates Shereshews classic 3-ch for29-power 2 sh $1000 No 325Taylor cub pc Don Sralls Schoolyard-Scale 049s 2-3 ch Spans 50 is$350 No 325BristolScoutDRClltmschsPrecisiosScaleA-sizelspas73 bipeforBi power4sheets$1650 No 330Stitchin PC Pandolphs advanced trainer 4-ch 10-15-power Variable stability featares$375 No 332Zephyr PC Small 2-nh glider hand-launch tow thermal slope soaring$200 No334T-3 Mostly-foam-board 3-nh trainer 19-40 power Paggedl Three sheets$850 No 335Sopwith Dolphin FF Bill Noosess Jumbo-Rubber scale great WW I-vintage biplane$175 No 337Super Akro-1 chips c Scale-like staster 5-nh 1 smoke valve 40-power 2 sheets No 338Rearwin Jr PC Don Mathews Sport Scale 4-nh 40-power Monoplane$525 No 340Mosaic Stunner CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No341Brown B-2RC Scale-like sport flier 4-nh 19-29-power Rune Osinkee hot 25$500 No342crosswind PC Bill Evens semi-sailplane 3-nh 19-power$350 No 343Wasp VI PP Mike Stoys Nets-winning Oatdoor HLG$100 No 344Misty CL Scale Pacer Class II Also fly Moase just sport$100 No345La JolitaCL /A Scale Pacer Class II also sport Moase$100 No 346Rivets CL Scale Pacer Class II also sport Mosse$100 No347Space Shuttle PC Sport-Scale glider 2-nh laanch mother plane$175 No 349Onastap PC Trainer has very forgiving flying qaalities 3-nh 10-25 power$425 No 349Devis D1K PP Scale flying outdoors CO-2 power Spans 21 in$175 No 350Electric Spitfire PC Fun-Scale 15/25 electric 20130 glow 3-nh spans 6 ft$750 No351Dakota Granda PC Easy-flying bipe 60-power 4-nh. scaled-ap 1950 PP$625 No 352Walking Matilda PF Wakefield Pabber placed 2nd 1975 PP Champs$175 No 353Excitetion CL Sleek 46-powered super-Stuster contest-proven$400 No 354Merlyn PC Giant 155-in spas Sailplane ases 3 PC channels$750 No 355Santos-Dumont 14-bis PC Sport-Scale canard bipe for1 5-power 3-nh spans 56 2 sheets$575 No 356Maula Lunar Rocket PC -Scale spans 925 5-nh flaps 12 no engine$1200 No 357SE-B CL Sport-Scale power Biplane WW I-type$200 No358Pieces PP Indoor Easy B Pabber-power contest-winner W Van Gorder$100 No 359Black Widow PC Pan-Scale twin two lOs 4-nh PC spans 56 WW II sight fighter $675 No 360Dragon CL Slow Combat winner has foam wing ases 36-power$500 No 361Electric country Boy PP Pecord-holding daratios craft 02 motor$200 No 362Suparcat PC Half-A Pylon Pacer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364Neutron Star PC Sleek 40-size Pattern flierwith tail dragger retracts enclosed pipe bailt-up$525 OeOSeeOee@@@eeee@@OOSeOo@OOOSO Circle numbersj planss wish order 0 131168225239253259 285291299302307309 322323325326 340341342343344345 351352353354 362363364365366367 Pleaseprintcarefully 260262269278282 310314317318321 328330332334335337338 346347348349350 355356357358359360361 368 Enclosed $_______________ NAME S STREET CITY STATE ________________________________ ZIP____________ Price includes first-class postage Send check mangy order payable Model Aviation AMA 815 Fifteenth St N W Washington DC 20005 eeeeeeoeeeeeeeoeOSOOOOOOOOO@00 several published since measures about 14 overall will weigh according litera ture anything 0001 oz lb What get money five pages detailed instructions 4 x 11 -in set heavy paper stick-ons self-adhesive backing stick ons graduated beam scale table conversion factors 10 sheet metal wire parts builder furnishes sheetmetal stock wood balance beam odds ends readily-obtainable hardware Printing first-rate good-quality heavy paper Whittling out parts should no big deal anyone having skills tools build model plane Calibration done using t-oz weight thingmodeling clay suggestedweighed out perhaps local friendly druggist 1os weight placed pan paper clip added solder wire whatever trimmed until balances beam set 010 mark end beam weight placed pan second small sliding weight made say copper wire balance ready weighing anything up ounce smaller sliding weight will weigh up 01 os 00001-os graduations larger sliding weight will weigh up os 001-os graduations stan off 1-lb weight pan can weigh up pound 001-pound 016 os steps small catch assembling things distance between knife-edge holes balance-pan support bracket exactly instructions state measuring 0001-os graduations using sliding weight made according instructions 0010-in error distance will corre spond 1-graduation 0001 os error measured weight can measure eye 0010 much closer checkweight corresponds full-scale reading distance totally unimportant minimum weight can measure accur ately depends friction knife edges air currents like 0001 os seems like practical minimum sort device really accuracy need Indoor work upper limita pound suggesteddepends balance distorts under load price $300 postpaid Micro-Air Precision Products P0 Box 1129 Richland WA 99352 old friends Campbells Custom Kits has new outthe 1 8-in-span Merlin 2 Outdoor Hand-Launched Glider design proven contest winner having won 1st place 1975 Canadian Nats its designer Chuck Wiese 2nd place 1981 Canadian Nats Junior category John Renkin Ann Arbor MI kit up Campbells usual high standards quality -in wing plank has tapered trailing edge fuselage piece precut spruce can get local hobby shop $498 can order direct Campbells Custom Kits P0 Box 5996 Lake Worth FL same price must add $200 per order shipping handling 0 Bob Meuser 4200 Gregory SL Oaklart4 CA 94619 0 0 S 0 0 0 0 Full-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed businesssize envelope Model Aviation 615 Fif teenth St NW Washington DC 20005 140 Model Aviation 0 S S 0 0 0 0 0 0