IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let fingers run through white pages * * * * WANDITTM * iT P1111 *Dealers Invited * * lone year warranty * *1~1OftCORDi Wetorflry * Stick Abrasives * *A Keen Machine gives exceptional *sanding control excellent finish * *8995 Basic mcI 1 flat Wand 1 * rits *10895 Builder Special mcI 2 ffat half- * nd wand 5 6 grits *12995 Deluoe includes 3 flat 2 half * nd wands hoff wands * 6 grits * *Additional Wands Abrasives available * local hobby shop *AlIBIS ELMORE Ece lix 214 28a 5709 * PO Boo 266 uite Texas 75149 * HOV HI Wing Span--lW Wing A-ea--5e9 5q SNSOAR glider HOBBY HORN Eacluslee! HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556
Edition: Model Aviation - 1983/04
Page Numbers: 16, 17, 18, 20, 157, 158, 159, 160
IT IS DECEMBER 2 75 degrees write Editor particular column sub mitted much earlier normal leave Bill good slug time holidays book work northern Virginia Los Angeles weatherman predicts spring will continue through coming weekend am up ears airplanes Only Vagabond RC-Assist fly able condition Everything stretched limit get through flying season should have succumbed cold winds weeks ago Everything needs seasonal maintenance rate wrn never build new crates next year need shrink think flying site archaeological dig spots errant prop bladesnot woodas taxies Perhaps dis tant day people toothbrushes will deter ancient watering hole prop blades ancient mans skin ning tools Incidentally dictionary word after archaeology archaeopteryx primi tive bird Upper Jurassic period Europe reptililan characteristics Sitting around sunshine old-timers discover can recall beginnings site Some hookey players philoso phize about abject stupidity friends went work As displaced New Yorker brought up emotional debates meetings over Roberts Rules Order constant gales battles places fly life Northern Vir ginia RC Club hying happy hunting ground Washington may transi ent area m country what govern ment military consultants scientists underfoot Talented modelers appear everywherethree guys remember lone oak tree Round Swamp Rd Long Island outlandish thing ever advertised pubthrough crates strained dis- lished magazines piggy-back deltas flying gusting regularity wings canards course regular jazz nationwide trends blend see As New York Chicago LA have 16 Model Aviation just fun Bill Winter Fairchild FC-1 razor-back strip ailerons liquid-cooled OX-5 enginethe plane Bill Winter says has wanted build life Fairchild photo via George Clapp Brad Taylor soloed NVRC field last May will interested know old geezer asking questions Fun columnist foreground Sweet Stik OS 50 12-oz fuel tank Brad holds Drifter II Leisure 05 electric motor runs 4-5 minutes Cox 7-4 prop says 7-3A use Has on-off soaring Brad sold off worn Kadet II 40 alreadylslightly reflexed ailerons great also pushes Astro 6-ft Porterfield Astro 15 motor belt reduction drive Left In 1978 picture age 68 older much wiser George Clapp poses modernized 1936 FF gassie now called Torc Right original 1936 model photo 1937 Says George Too soon ye get too old too late ye get too smart Much about George text airline pilots fly lot say little tend toward lovely Pattern jobs can see face reflected Membership grows leaps bounds someone being soloed almost time flymay half dozen weekend day mem bership approaching 200 NVRC has several bigger club neighbors about 500 members three flying sites Its young folk excite big club ecosystem complex community its environment functioning ecological unit nature Several fliers come two counties awaya guy take granted drives 60-odd miles get Texas drive farther go movie East 60 miles Misty Isles Some guys fly airplane year year out Most crates go back beyond memory man Nobody knows came 17-year-old Cherokeewell bought $30 years ago distant contest its present owner got after another chaps crack-up Some bought club auctions recycled time time again ships found hang ing rafters home changed hands Some have no papers know may have started life Cali fornia Older guys remain good pilots dont want build guys no time depend aeronautical flea market oh kids arc too young drive Supportive folks drop off pick up Within months some fly better us after lifetime fun watch talk Heres typical case chap spread blanket parked Kadet Gentle Lady Drifter Sailplane latter two electric 05 6-ft Astro electric Porterfield 15 belt-reduc tion drive Claude McCullough Sig given advice over entire year milking Kadet go better young chap using same tricks on-off electric flights beautiful behold watch out corner eyes says soloed past May yet am asking him questions has digital voltmeter knows precisely peak electric power plantswhich could So too now have digital charger meter auction thing already MOTOR ON-OFF PROP STOP TO SERVO N___________ SECURE RED OUTER WELL ADJUST FOLLOWER LOCATION ON ROD SWITCH POSITION ON FUSELAGE SIDE FOR OPTIMUM OPERATION 4-40X1/2 NYLON ft4 SCREWS FUSELAGE SIDE 1/8 X3/16 SLOTS 2 PLACES KRC RECOMMENDED MOTOR MOUNT RADIO SHACK 271-129 RADIO SHACK 275-016TAP 4-40 2 PLACES SWITCH____ OUTER RED GOLDEN ROD N MOTOR OFF AS SHOWN\\ YELLOW INNER GOLDEN ROD 1/16 GOLDEN SULLIVAN 078 RODS WITH\ROD THREADED ENDS3/813/813/81 020 MUSIC WIRE DRILLIHAIRPIN THIS ASSEMBLY WITH HOT STUFF 8 BAKING SODA INNER WIRE ALLOWS SMOOTH BEND STRESS RELIEF WHEN DRILLWHEELENGAGING PROP aTAPCOLLAR ALK -9/82 CUT SIDE AND/OR DOWN THRUST INTO FUSE FRONT I SOFT BALSA BLOCK 2 CUT OR HOLE SAW THROUGH DIA TO SUIT MOTORSNUG FIT-HAT 3LINE BALSA HOLE- WITH 1/64 PLY 4GLUE BLOCK TO FRONT OF FUSE. 5CARVE TO STREAM LINED SHAPE THROUGH TOP6MOTOR INSERTS RLK-9/82 HATCH REMOVE1/2 DIA HOLE FOR MTR PROP DRIVEAIR EXHAUST FIRST BOUT 11/2 7 HOT STUFF 8 BAKING SODA 2 GOLDBERG NYLON RIGHT ANGLES TO PLYWOOD LINER RECESS MOTOR ABOUT 5/16 DRILL /8 HOLES IN NYLON ANGLES TO MATCH TAPPED MOTOR HOLES USE 4-40X 1/4 SCREWS THROUGH NYLON ANGLES INTO MOTOR BE SURE MOTOR REAR COOLING HOLES ARE CLEAR 9UYS floundering around new electric technology two excellent tips Bob Kopski presented information sheet distributed Electric Fly Hatfield PA Keystone RC Club has great siteexclusively electrics maybe first world Horse-trading art gotta whittle always end up plus Two days later Kadet having served its purpose gone its place Sweet Stik 05 50 12-oz tank flying bananas stage wait pin pray wrn make thermal Sailplane flight leave Stik ground get picture make notes something happened myself 10 am engine-run curfew watch floating Vagabond RC-Assist station wagon disgorges four kidsmy lad among themwho pour onto field grab frequency pins off races have two Sweet Stiks Jemco Mustang Falcon 56 youve seen Disney April 1983 17 Paul Eckhardt chap calls Bill Winter sonny arises chair fly field box does Left Plane cradled restrained starting Starter pops out small front doorfuel pump booster meters jacks side convenient right hand Right Open side door two-tier rack tools glue etc swings handy position Better call box operations center thing otters play sliding down mud bank river bunch circus clowns pouring out Volkswagen get picture sky filled zipping crates tight melee free-style aerobatics mix up like WW dogfight sit chair forget about flying gawk No formal air show ever like Ive never much fun Ive seen Jemco Mustangs must old experts build heavy cant land tail draggerswhatever Jemco held its own Stiks twisted turned landing greased-onlike falling off log still left 2 oclock Only word fits flying Rejoicing Hallelujah Hallelujah stosy about George Clapp say quickly because unlike reporter must say what right up front Im hairy-dog man George nothing else will work month drag out folder now two George think Gosh everyone knows about George really took Bob Larsh several issues Model Air plane News relate story Carl Gold berg just connection Zipper Now know first time met George thought mother hen Thats compliment George doing giant Fairchild cabin monoplane Model Aviation Guys great stuff fussy perfectionists really need vice-president charge such individuals George continues write fabulous letters about historic aircraft research enclosing priceless drawings planes al ways wanted buildand probably never will George about age began same time same way have copies ROG plans 20s certifi cates won kid talents Scale Old-Timer builder awesome came Virginia fly 1936 Torc RC-Assist us later looked up ground ed kids upstate New York dragged him out fly got him club now cant keep up kid three crates dream about Fairchild FC-1 Sherman Fairchilds cabin answer aerial photography early 20s 90-hp OX-5-powered longer nose sans nuisance air-cooled cylinders stil ty landing gear razor-back fuselage blended inverted triangular cross section midway between cabin tail folding wings things strip-type ail erons Boeing 100 Model 89 civil ian version P-i 2 another Williams Bros Wasp would perfect because 100 no Townend ring cylinder bayonet stack pointing straight back Only eight LOOs t think built Howard Hughes two-seater Great aero batic pilots like Mantz Mb Burcham thrilled air shows until WW II Having lived near Teterboro days Atlantic Aviation Fokker Tony USA bicycled see Univer sals Super Universals both great bushplanes trimotors especially F-b three guys linking arms pulling rope attached sleeve slipped over prop bladewhat way start three en gines four-engined F-32 dirigible fighter lost Curtiss bomber part North American Aviation near Baltimore depression mergers lost Martin B-b Id like F-b Just fantasy People turn George help museum restorations has 71 appeals developed plan granddaddy Beliancas CF recently restored National Air & Space Museum Youll find drawing VoL 6 Famous Aircraft author Jay Spenser published Smithsonian Continued page 20 Upper Left George Clapp looks found Fountain Youth research Paul Garber Facility Silver Hill Guiseppe Bellancas CF winner numerous efficiency awards early 20s see text George made drawing recent book published National Air & Space Museum now doing restored DH-4 Above Left Clapps Black Bullet 1948 symmetrical streamlined fuselage cabin built toppulled 0&R 19 ignition Above Right Clean Mr Spook III September 1982 Model Aviation indicates Georges terest go-fast well go-slow Below Left Aurora Model Aircraft Clubs site 15 miles north Toronto George greeted 13 1936 Torc Antiques Walt Lawrence left built first John Pond plans others obviously liked what saw George second left pic jazzy Torc right foreground Below Right same five Torcs upstaged fantastic Miss Philly IV fore ground smaller interloper Having timed early Bassett models Bill Winter says landing gear consisted three round struts tied together axle like inverted tepee Basset trounced everyone Eastern States Meet years ago Winter reports victims claimed must have filled tires heliuml 18 Model Aviation ASTRO CHALLENGER COBALT MOTORS SUPER POWER FOR WORLD CLASS COMPETITION oar rst cobalt motor 1975 oar SOLARpomered anmaneed airplane SUNRISE SUNRISE motor meighed ft oances prodaced 3/4 HP Last year baill SOLAR PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL LENGER made its Stotoric flight Pointoise France Manstan England July 7 t 991 SOLAR CHALLENGER COBALT MOTOR mas three inches diameter bat delivered almosf 3 HPII asing advanced technology Orieg yoa oar nem ASTRO CHALLENGER COBALT MOTORS saper-performance motors serioss competitor modeler demands best simply mont settle second best heart motors te nem high-energy rare-earth COBALT magnets supply much higher magnetic has damaged hy overloading efficiently utilize magnetic potential have incorporated high-grade silicon steel armature lamnation 2 high-perlormanch commutator capable running 35000 RPM 350 F 3 nem stiver graphite cartridge brash can salely commotale 25 amperes net revalt isa really saper-pomer motor thats ready maria class competition THE NEW ASTRO CHALLENGER COBALT MOTORS ING ELSE COMES CLOSEff LARRY JOLLY SETS ELECTRIC SPEED \ RECORD OF 9285 MPH 2-WAY AVERAGE ASTROCOBALT O5D ASTRO PLIGHT INC EDDY. SUBJECT T FAt CONFiRMATION13311 BEACH AVENUEVENICE CA 90291 Challenger 05.. $7500 Challenger 15 00 Challenger 25. $12500 Challenger 40. $15000 Motors made orderPlease allow 30 days delivery Send stamped self addressed envelope specifications ir 4 span 56 Channels 2 -3 Wing Area 690 sq Engine 19 35 -JI complete 1/6 scale R/C model kit designed assemblelook fly like famous WeedhoppetTM Model-C Ultralight AIRCRAFT part aluminum structure pre-bent drilled nylon rip-stop coverings pre-sewn1/6 Scale $16995 Available choice four colors hobby shop now1/3 Scale $26995 Other ultralights available soon carlberg companies product 8170 WEST PENN AVE ROSEVILLE 1161473 PHONE 309/426-2161 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE LEWIS /ICKERS DAU BELLUM SEND $1 FOR FULLY ILLUSTRATED CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 early 20s Belianca won roughly dozen National international awards efficiency Guys barnstorming Hisso Stand ards OX Jennies Bellanca gone four-place plus pilot cockpit monoplane did honest 100 mph its 90-hp two-row 10-cylinder Anzani visit Washington DC take Paul Garber facility formerly known Silver Hillthey have tours fun down town grand museum Bellanca CF Id love build CF has no di hedral does have huge large-chord wing struts side add much lift dihedral need wing leading edge negative dihedral giving overall twist washout C-2 preceded famous Wright-Beilanca generally credited source Columbia follow-on production numerous jobs ending Wasp-powered Skyrocket climbed 1800 ft/min lightly loaded Climb like still thrill Twenties predecessor American Airlines flew Fokker trimotors briefly summer inaugurate NewarkMontreal airmail run watched pass overhead New Jersey bit later George saw passed over place upstate New York Fairchilds followed George modeled trimo quickly torFokker well Fairchild may have seen grand project Model Builder some years ago model given George AMA Museum Hes doing another Fokker trimotor now Josephine Ford received out blue original 1925-6-7 factory drawings Fokker Holland told George about driving Model T Ford along hilltop road New Jersey dirigible Los Angeles came drifting eye level valley spoke Shen andoah drifting over town wee hours engines throbbing lights city reflecting bluely its hull Dont try top guy sat cliffs Jersey Palisades Balbos squadron Savola-Marchettis flew down Hudson after transatlantic passage George waxes poetic about seeing Italian Ar mada way Chicago Worlds Fair roar 48 Issota Fraschini engines 24 Savola twin-hulled flying boats something will never forget remembers ground below shook made way following Great Lakes Chicago very low day because bad weather skirting thunderstorm some south Lake Ontario have George riding thermals now Torc know climb up throttle back set up circle trim put X-mitter ground wait lift find ts puzzled two hawks have ap peared seem ignore Torc Virginia buzzards near local landfill swarm around own Old-Timers circle feathered spongers take lift anyway find Torcs everywhere try George visited Aurora Model Aircraft Clubs field 13 Torcs lined up greet him George could hon ored club members get together long weekend summer fly Clapp Armada floats off lake north Toronto Member Walter Lawrence designed Continued page 157 20 Model Aviation PARTS T & WHITNEY HONE WRIGHT E SOAR WITH CLASS AND CONVENIENCE WITH ONE LIFT TO FIELD OR SLOPE 2M STANDARD OR THE UNLIMITED SUPERSHIPS FURNITURE QUALITY MAPLE PLYWOOD AND DADO CUTS FOR AUTO-ALIGNMENT ORDER DIRECT FOR ONLY $2995 AND WE PAY POSTAGE VIA UPS COD ORDERS WELCOME WRITE OR CALL FOR FREE BROCHURE h1 WHALE HOBBIES INC 1201 MCDUFFIE No 104HOUSTON TEXAS THE SAILPLANE CADDY 77019 black bamboo paper found local hobby shop bamboo paper much blacker regular tissue makes letters really stand out letters stuck thinned clear dope Sig Lite landing gear wings have same brace wires real needed wires silver silk thread sewing store look very realistic cable tension adjusted slip knots plane balances third chord back leading edge top wing just right good flying motor has about 50 down 40 right thrust needed Without thrust settings right turns much too slow plane would change lot trim elevator motor off control throws 1 V2 side rudder 1 side elevator final dimensions 51 span 11 chord 41 length 24 26 oz all-up depending motor bat teries 1/6th scale though hap pened chance aiming eight square feet Takeoff delight has slow dreamlike feel up about eight 12 feet roll climb gentle fast enough after minute switch half throttle keep below ceiling Turns left easy smooth though turns right require work Apparently real flew way too due its rotary engine RUBBER STRIP FAt RUBBER Made USA SIZES 1/4 3/16 1/83/32 1/16i 1mm thick 042 8OXED 16 ounces rubber per box PRICE $1250 per box ppd USA PIRELLI 3mm $1&00 ppd KSB TIMERS FUEL SHUTOFF 30 SEC $1195 6 MIN DT $1195 .U lOll 1LYMRII SEND 5OiFOR 1982/83 CATALOG FAIModel Supply PO BOX 3907TORRANCE CA 90510 Response controls positive jumpy plane large com pared weight takes little time respondlike pushing balloon have tried aerobatics plane stressed have sufficient room Kingdome Landings slow float ing quite graceful re warding project though simple fact quite challengebut also lot fun would like try Indoor RC Scale have think too will have lot fun would suggest try either 5 6 sq ft model under 20 oz Astro 020or have large indoor space 24-oz 8 sq ft size Astro 035 Stay dry warmfly indoors Fun/Winter Continued page 20 foam floats now George watering own Torc set Walts floats George adds doing plans Fairchild KR biplanes series including one-of-a-kind KR-135 tapered wings six-cylinder Ranger George gets ecstatic about Doc Mathews Ole Reliable Old-Timer does look like Torc Both ships have wing struts somewhatalike wing tips rudder profiles nearly identical Frank Zaics Yearbook has three-view Ole Reliable credited Charles Macey 1938 design So George let 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HOBBY HORN Kit SENSOAR Gilder kit isa high quality kit Machine cut 6 sanded parts Select qoabty balsa spruce Oetailed plans written instructions Fur THERMAL SLOPE 05 ELECTRIC POWER VALUE PRICED 51900 P & W Semi-Kilo Combined sciON full oti-ipsevod plon Now md Wi-e Window etc Mat Mole may purchoxed uol oo semi kitx plono-wrile vi- call price. 1936 Buceaneer-94-511 1939 Cupper MIt l-72-539 1937 flallaire ipxserltiS5e5 1940 Ranger-66 $27 1939 Mernury72S50 1931 Miss Amerixa94-S59 1941 Playboy Jr-04529 1940 Playboy 5r8l1546 1939 Pomer House94-$43 5940 Sailplane79-- 574 1940 iv tong-50$29 1839 Trentvo Terror-7932 1939 Zipper-14-$49 1939 Korda Wskefield-44- 107 MIDt9AY MODEL CO Semi-kito Combined lo/otrip 1936 Flying Quakert4S49 1937 Quaker Flash6T539 1937 Long Cabin79S42 1937 Air Chieftl-S40 STRUCKS 1940 lii Span 835 Sq UEESEMIKIT Iplanlncl-53390 Nuw ruler Combo IPull Kit$5000 SCALE PLANS nd DRAWINGS S-sn HEINKEL HE1900 62 69s $1000 AND HANDLING Op $806 odd $156 $001 $2e00 odd $225 $2061 $4500 odd $360 $4501 $7000 odd $350 end over $7000 odd $406 CA Addressees odd 6% Oux send sto visa/MC#1Exp Check altom up 10 30 days check clearonce IICGDExvcx Chvrges 1- $150 ildi Cash Only[AII UISt 64 Page CATALOGUE $200 PP/Sot Class copy mill sent free--mhen requested-with order HOBBY HORN 00hobby specialties00 15173 Moran Street IA PO Boa 2212 Westminster Ca 92083 1719 8938311 171111 8951203 April 1983 157 WE WONT LET YOU DOWN Cox Customer Service prompily handles parts service requests Cox Cox / Sanwa products CHECK IT OUT K No must have wrong number design airplane noooo answered Macey Wait minute dont hang up pleaded George am talking about gas-powered model airplane called Ole Reliable Oh said Macey didnt have published Ira Fraiuick did fact never thought good flier Little did know After several conversations George Charles agreed coincidence some thing else because neither ever done contest work both done models resemble reai aircraft because gas models day didnt Zaic Yearbooks hundreds appealing three-views have saved everything posterityand Frank still Ira Frailick George Clapp has put fun joy lifemaybe yours too Some mother hen Behold lowly aileron simple device know everything about aileron aileron has tricks up its sleeve magician need convincing Yesterday got aileron reversal out Kadet put stick left crate turned right know An aileron nothing infinitely-vanable wing warp have accidental warp model regardless model cate gory have displaced fixed aileron greater airspeed pronounced its effect Free Flight handicapped splinters destruction puts its nose down spirals hell-bent earth use intentional twists hold up wing tip inside circle HL Gliders Rubber Gas jobsany Free Flight J modeL Just aileron really aileron hinged varies wing camber demand lift side wing otherso plane rotates around its roll axis cant say turn-and-bank because little no dihedral ship realiy tilts youll agree need give elevator bring around dihedral aileron couples dihedral produce smooth turn-and-bank required elevator varies nothing moderate does dratted aileron vary lift asymmetri cally proportion airspeed varies drag simultaneously also asym metrical effectin opposite direction party can get rough aircraft maintain aileron effectiveness slow speeds has ageold problem particularly near stall As speed declines generally true ailerons first go elevator finally rudder dihedral usualiy can maintain control approach going rudder such approaches can become erratic because rudder too couples dihedral moreso pro duce unwanted turn bank correctionsa novice often stalls-out final zigs zags say rudder proper approach flight path directional correction ap proachbut thats really true slight no dihedraL such planes rudder can yaw nose find precise heading Ailerons have clandestine relationship sorts thingsespecially vertical tail area Vintage classic-age jobs almost al ways have minimum-sized tail surfaces Along about WW II researched numerous stall-spin accidents private aircraft resulted Phi Quality Flying Models 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4 * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 Catalog $150 inadequate vertical tail area Old design ers out mininiize structural weight Such models really require pilots coordi nation aileron rudderwhich biggie model experts keep telling us Scale effect magnifies problems small vertical tails supposedly prevent aircraft yawing adequate speed down-aileron has drag up-aileron tending pro duce yaw cancel resulting difference drag between ailerons youd need 2A times up compared down Down-aileron does work Coordination always big deal real pilots Ercoupewhich embraced known safety features day like limited rudder Stinsons toohad 2A-tol aileron movement ratio Since aileron yaw thus cancelled vertical tail big Stinsons did its job early Champions aileron yaw extreme small vertical tail gradually increasing turn stick ended up ship badly yawed looked out side window see straight ahead stomp rudder Such ships rudder airplanesthat needed heavy rudder coordinate Aeronca added dorsal problem vanished big classic-age Aristocrat has such de layed response aileron alone climb-out test pilot thought no radio Eventually would wear~ around touch rudder banked turn beautiful couple 20% full rudder move ment aileron movement transmit ter must decouple time land rudder corrections will couple two degrees dihedral crate will wander stubbornly rough vertical tail marginally smalltrue RCsyou wrn note momentary yaw wrong way heavy aileron used abruptly have look sharply just before crate swings over majestically nose has lots side area what may look like big vertical tall reality large danged aileron gets confused some times thinking flap side flap lift increase greater drag say one-third depression two thirds flap can feel drag full flap modelers use exaggerated full flap drag grows altogether out proportion lift/drag ratio crate air brakes full flap tremendous flapped clas sic plane run up takeoff speed flaps retracted one-third flap popped ship rises like elevator Full-flap HOBBYHTOEAWAYHOB5YHDEAWAYHOABYHIDEAWAYHOBBYHIDEAWAY tr FAMOUS BRITISH DIESELS AEROMODELLER PLANS ES FOF M/E PAW D/C 2nd EDITION CATALOG-DIESEL HANUUUI $350 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HOBSYHIDrAWAYHOSBYHIOEAWAYHOBBYHIOEAWAYHOBBYHIDEAW 158 Model Aviation Hobbs adivision Leisure Dynamics Inc VlOO W 78tSL Minneapolis MN 55L135 6371 SW 2al Street Margote FL 33063 13051 giG-Mit ENGINEERIN iHE LANDING GEAR PE0LE Tirol kft limIt eg gears loot itt floor biggie property 0 & 0 Eegieeeitng coo isive problems * Cesiem built Keels & specs goaranteel fit * String & lorbfe wltbotoel toogbesi inling * 0 & 0 Eagieneriog geir miii mark & keep biggie flying * in steck roplacemOflt gear tsr popefar mmliii Syren Pitis Chatatee Eagle CAP 21 Ohio USA J-3 CUB Air Tub Pamneo aol Eagie Russo Big Stick Champ Citabris B & B molois Snapper Stinger aol Soapper To. could kill mentioned Hurst Bowers having shown technique Stinsongreat old light planes popping over trees etc recounted being forced same thing C-47 difficult situation Nam Carl Goldberg patiently tested sorts things model development Like Champion found vertical tail too small intentional washin lift wing actually made glider turn opposite direction vertical big enough too big glider turned banked desired Well add thrown high speed HL Gliders washed-in wing positive twist fixed single aileron will produce correct turn speed fades drag washed-in side often causes S-shaped transition plane turning wrong way FF Power fliers once hinged small tabs trailing edge fiddled dabs clay weight taba baby aileron speak high speed wind held tab in-line airfoil speed feli off glide weighted tab dropped incorpo rate turn adjustment washin effect supposed ralse side wing slower plane flew greater tab drag compared its lift could come tiny fuil-down flap Its easy see concept abandoned fin size additional factor yaw control such FFs unpredictable unless guy lucked out perfect combination crate Editor Its impression floating tab once used some FF Power models intended act aileron though acting way may have led its demisethat intended provide glide cfrcle control drag tab hanging downward slow speed little no effect high-speed powered por tion flight wind held tab in-line airfoiL CR W gremlins stubborn Japanese beetles have ball conventional ailerons model deficiencies aileron area compensated horrendous aileron traveL Im hacker dont know offhand much area aileron should have percentage wing area guided piece wood conveniently 1-in wide might measure aileron area three-views satisfy curiosity findings would vary over lot example Japanese naval pilots wanted great response low speeds Zero its big ailerons contrib uted planes amazing ability lower dogfight speedsbut got mighty stiff high speeds its distinct handicaps An engineer equivocated asked him finally allowed 10 15% good guess Now consider large flap deflec tions boost drag down-aileron has same characteristics asymmetrical tab think what happens speed falis off ship sits nose-high slow throw severe aileron lift downaileron weak dead deeply de pressed aileron almost fuil flap just air brake Thats got so-called aileron reveral out Kadet also likely same wing tip will stall approach spells basket case Kadet has adequate aileron ship trainer sorts trainers come colors rainbow actually theres spectrum trainers little Ace tail-wagger up Bridi 40 aileron train er some low-wingers too depends what need train next step up Kadets ailerons big enough hair-trigger pilots flounder around like writer add gobs aileron movement trying get re sponse low ballooning attitudeswhere have no business tool around oh so-gentie aileron K&B 40 roars much prefer sensitive response vastly increased movement low-speed effectiveness narrow chord ailerons # MODEL SUPPLIES Ply-Span tissue various colors Fiberglass tailbooms HL gliders towline gliders RIO gliders free ffight Adhesives carbon fiber pre formed landing skids KW prop brakes pacifier bulbs Drew circle-tow units thin-wall surgical tubing Tatone engine mounts plastic-head pins other items catalog send self-addressed large envelope NFFS/MS-1 1602 Encanto Place Walnut Creek CA 94596 April 1983 159 strip ailerons compounded extreme stick movements low speeds ends up dangerous aileron drag wing tipin mode controls soft fading cant correct mchanjcally differential movement because need much down-aileron world can get much up-travel Total movement doesnt permit course could use aileron area control becomes super-sensitive hacker high-speed end suppose good fliers maintain adequate airspeed under conditions Easy Ailerons love flutter Modelers know aileron linkage hinging cant sloppy Aileron flutter has torn up countless real planes before WW IL During 20s much ado about mass- dynam ic-balancing first large plane designers added small fixed wing-like surface above forward aileronwinch put aerodynamic surface forward hinge line surface could weighted mass balance think mass static balance area dynamic balance got moving hinge line back controls faster planes say 20% surface area forward hinge line tucked weight forward line RC escapement days flutter rudder elevator no ailerons could pull hinge through insert explode airplane skeet shoot Such balancing effectively killed flutter big models weak escapement could deflect surface aerodynamic balance reduced control forces fractional part what otherwise required Such balancing also reduces servo loads battery drain startling degree Monster powerful fast Scale jobs should always have such balanced controls some ancient type does permit plane must never flown unsightly unscalelike speeds would minimize causes flutter avoid like devil aileron tapered thin trailing edge Evidently cavitation takes place crude approximation think Old Glory whipping breeze think Joe Bridi fox popular 40 60-powered aileron trainers will find strip ailerons no taper whatsoever just slabs wood rounded edges find same basic airframe RCM Trainers Great Planes Kraft sides Joe himseifthe thing has lives cat visit Kitty Hawk tour director may twist wing Wright replica wili see dummy figure pilot slide sideways first airplane fly successfuliy pilot shifted body actuate cables twisted wing warp cause turn bank also co ordinated rudder Curtiss put tiltable aileron surface like small wing between wings biplanethis avoid Wright patent wing-warping remained common early years Curtiss done neatly step away hinged ailerons fly today Nothingand everythinghas changed Just put stick over music goes down around comes out What music sounds like business Bill Winter 4426 22030 Altura Ct Fairfax VA f GEE BEERC SUPER SPCRTSTER - K funny thing happened way February issue package plans Henry Haffkes Gee Bee R-1 article contained three plan sheets unbeknown us should have contained fourthe reproduced formers other pieces missing wasnt caught author until after March issue finalized werent able clude reproduction Sheet 4 Part 2 article However able make minor changes type March issue show correct price four-sheet plans set Also February issue incorrectly interpreted authors notes about cover picturewhich caused us have Karen married off before timel Weve since learned distress note simply indicate picture taken Parnus State Park apologies both Karen Henry Haffke R Wheeley Editor Publisher 160 Model Aviation PI3iIC] 615 So Gallatin Rd son TN 37115 615 868-6811 Mon thru Sat um 500 pm ATTENTION QUARTER & GIANT SCALE MQOELERS LLIT-SAP need LLIT-SAP multiple servo LONG LEAD INTERFERENCE TRAP & SERVO ALTERNATE POWER adap tor Specify radio orderIng S29g5 postage paid send large SSAE for literature REPAIR SERVICE FOR HOBBY LOBBY EK LOGICTROL FUTABA T HOBBY SHACK ROYAL LINE RL RADIO SYSTEMSI FUTABA ROVA ACCESSORIES FOR MOST RADIOSI Ws4 1W GLOW PLUGS FOR THOSE WHO WANT THE BEST SHORT $119 tONI $119 RC SHORT $169 RC LONG $169 Rhodium twice expensive platinum s better glow plugs space age insulator costs glass crack use Job shops couldnt hold tolerances wanted metal parts make ourselves though less 1 plug 500 fails glow FOX PLUGS THOSE WHO WANT THE BEST F 0 X MFG Co 5305 TOWSON AVE FORT SMITH ARK 72901 Hot Line 15011 646-1556