Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127
Edition: Model Aviation - 1985/02
Page Numbers: 30, 31, 32, 33, 120, 121, 124, 126, 127
Bill Winter Just Fun NO FLYING IS remembered fondly occasional offbeat sessions place call Shangri-la Spontaneous geta way stuff Potluck planes come Four us would meet 45 miles away though Arcola International just 13 miles down road Arcola 50 75 Sunday Schnuerle-snort ing fliers four five time would zooming looping spinning rolling twisting Gordian-knot traffic An early telephone call Find something fly What found modified elec tric-powered Midwest Champ Don Srull would soothe Bealeton frustration Schlepp came second RC Scale second year running time point miss prizes like seven-channel RC systems point. well priority FAC Champs came out top 15-year-old slabby gassie wing wealdy asked Gli der old Mabuchi electric motor specs unknown 5-to-i reduction unit made Ace RC nylon gears huge plastic folding prop extended blade area tip twist Graupner exten sion shaft universal Hobby Lob its kludge likes 30-min flights motor shut-down 13 min Srull brought scaled-up Simmersdesigned Jabberwock antique originally rubber-powered Astro 15 belt reduction 13-8 Geist folder ship RCM article weighs hefty 73 oz magazine version will light er good 12-mm flights anytime assorted rubberpowered weirdies like biplane canards Tom Schmitt flaunted all-balsa B-70 storage nine years modeled Sal Taibi operated Competition Models Its pusher 02 engine gosh well goes Free Flight Sal Mr Free Flight Allan Schanzel normally flies Rubber Scale trunk load escape stuff foam delta Cox 02 up front Ace single-channel rudderwagger radio Like all-silver French Mirage held attention day did get Toys-R-Us thats sold glider An exciting little devil Once year Allan flies Graupner Cirrus still great Sailplane has done 15 years Original battery never cycled old Kraft Gently coasting low ridge 30 minutes J-R folding-wing catapult glider exact copy Jim Walkers Interceptor Ameri can Junior Models before WW II As good ever Its technology still light years ahead anything can findtoday Foamin Foamles Shangri-la Left FAC 1984 Champ Don SruIl displays two MRCs new rubber-powered RTF scalelike shipsCitabria foreground Cessna See text funny things going day Right Allan Schanzel holds Citabria Srull discon nects winder Winter says change Rubber Scale days now hold prop teeth quantum jump wind blew prop out mouth Distant white building behind Allans head triggers thermals Winters Electricsthat far out Left Srull launching Citabria Compare Winters old duffer launch Cessna right Srull still has both hands nearly together showing prop release almost slmultaneouswith launch Winters one-hand toss revealathat released propwell fore launchperhaps resulting loss good number flight seconds Thats Winters observation critique Schmitt pics 30Model Aviation MRCs new foam scale things fly great double-length motor finally put oneit flight par good-quality Rubber Scale ship Climbs 75 ft has nice glide performance MRC model took surprise People sometimes send samples am product business Besides well see jillions ofrubber-powered things cure everything migraines warts give samples other guys least get used Maybe picked few Maxecuters thought gee what nice boxes great labels models foam very light sexily color-printedand can recognize full-size plane represents fuselage molded chan nel open bottom closed builder flat bottom piece got call Don Srull FAG champ said hey things great should fly fine kid guys having doubled rubber length stretch-wound found Don said quote fly well good Rubber Scale So can see pictures selected plug some advertiser days friends Two pre-school kidswho will grand fathers before long flew Interceptors did Jim Walker also ROG model called Hornet plastic prop 1938imagine just like rubber props buy today plastic nose bearing right- downthrust too never bettered Jims printed-wood cam bered-wing chuck glidersstill equal besthad around mid-30s After WV II until 1950 growing family still flew Interceptors crazy Walker stuff like whip-powered Control Line Ceiling Walkers latter February 198531 Birds Now operational Carl Brandenbergs Air Force planes Above leT BC Shark scratch-designed enlarged Vic Stanzels G-Line Tiger Shark two Carl built 1942-44 Powered OS Max 40 four-cycle does almost Pattern maneuvers Above right Carls Junkstlk foreground Balsa USA Swizzle Stick 40 Swiss colors OS 25 Stickbehind hasthewing enlarged six Inches ailerons HP 21 four-stroke McDonnell-Douglas RC Club belongs has racing class using Swizzle Sticks stock OS 258 Below left Crosswind Bill Evans design K&B 19 has ailerons added four-channel operation Below right nifty low-winger open cockpit Sting RCM plans Its powered K&B 40 Remember story about great Marine Corps air show teams circa 1930 Sanderson thought greatest Marine pilot Heres Larry Ladd nice-flying Balsa USA Phacton its thinly disguised things Curtiss F7C VF9M crack squadron complete hand-painted Scmper Fideils insignia Larry adds Sanderson guy Winter saw unbelievable Teterboro top racing pilot harrowing experiences Navy-Wright racers 19208 Left Remarkable FF Gas conversion Flyline Models Stearman kit Bill Bell added Williams Bros Whirlwind engine fly ing wires ailerons Improved realism Tom Schmitt photo Right Ye AMA Executive Director John Worth three electricpowered planes local parking lot Hes holding Kitty Sportavia wing does 12 mm Background Isa 15-year-old Buzzard Bombshell once gassie Harrah RCMgiven Winter Worth went Enya 35 electric motor battery pack hanging beneath belly now inside Having tried everything Astro Cobalt 40 Keller 25 both direct drive Astro 15 belt 12-9 prop found 15 combo tops planei 2 minutes better flies Winters old LeCrate middle six 1 2 Ah cells 2/4-to-1 ratio 1 0-somethIng Pylon Racing prop Australiaand has increased total flight times three minutes motor speed controller hes able equal Winters flight times six 800 mAh cells two big counter-rotating formed props end stick top prop rubberbanded stick placed too far down copter would start straight up lean over chase around flying field until power faded straight level like nightmare mos quito does plane fly level wings out sticks between mis sions speak Jim Walker remem bered sending occasional giant car tons Interceptors other stuff shot sky-high sticking long poles ground using long rubber loops blast up like rockets kids threw up flack 410 shotgun Inter ceptors like B-17s came back wing prayer looking like sieves never downed Army used target practice Walker1 other things like CL Fireball ViA Firebaby super-light 35 profile Stunter called Firecat took Firebabies Nats inexhaust ible quantities would let kid could start keep So tried three doorbell batteries taped gether booster kids kept Jim eventually turned out almost quar ter-billion items never bad wood anything Walker produced No wonder new J-R Interceptor enthralled r us day Shangri-la late 1984 Never duplicated over half-century distantly approached time-warp whip-power Control Line held hand fishpole eyelet tip other hand usual simple control handle lines running up pole out model start engine glider lifted pole started whirl mean doing stuff handle glider whistled poured coal plane fully stuntable things got bit much stopped engine right now held up pole Imagine Control Line training crackups grass field Shangri-la low hill rolling far horizon Tall trees along bne side behind us sway all-day wind warm late September sun few handy shade trees sit under rest weary legs narrow tar road skirts hill toward inch execute pretty landings Electrics paved lot low white fac tory building situated among trees 32Model Aviation ne uvok eagles Bill Lindemannsyoung est son Bills Sig Mustang Control Line Stunter weighs 376 oz Fox 35 Covered red-tinted silkspan f ished 15 coats thinned Lite Coat smoothed sanded waxed like glass Bill flies counter-clockwise boy clock wise Bill writes lovingly about Control Line Above Gull wings huge cowl jazzy color scheme make Pat Daileys Spanish Loire 46 photogenic its also top-performing Rubber job Design prototype French pre-WW ii days Left John Sites Maxecuters Club master HL Glider almost always turns up local Rubber Scale fun see sions Having watched John tossing catapulting Winter convinced gliders can talk Both pictures Tom Schmitt perhaps two blocks away day narrow strata lifting air stuck after climb pinpoint visibility glides ticked off minutes like New York taxi such occasions Electric shines day strange numbers Champ intended 15 two-cycle engine youd love magnificent HP 21 four-cycle context frame lightened wing-stab angular difference decreased compared stock wing standard deBolt designs light anyway weighs Leisure 05 381 reduction seven 12 Ah cells disgraceful 53 oz 8 oz maximum recommended experts 12-13 LeCrate almost square foot wing area difference between two wing loading seven cells same flight durations roughly equal 21 reduction ratio LeCrate same prop re worked 1 1-7 Rev-Up performance best six cells have unit 38 ratio seven cells worth looking Champ like LeCrate has flown two years same motor battery found two years ago six cells Le Crate prop faded after 5 min aloftwhich still left ample landing re serve seven cells Champ got hot before 4 mm occasionally 5 shut-off point day amazement Champ seven cells climbing well after 5 mm 5 6 6 judging power left after landing could easily have reached 7mm run Two flights Champ hit 13 min ship held almost stand still glideno windmilling perform ance beyond logical envelope50% run time previously possible come thing changed Trexler air wheels smaller thin Williams Bros hubless cant possibly make such differenceor can held climb constant shallow angle higher angle f climb would have drag iang climb puts dead weight prop thrust vs weightgravity fickle Whatever might agree motor rurrent drain necessarily lower Aaybe imitation deBolt-reworked prop liked what doing prop really unloadsGas Electric think jf old lightplanes stalled about 37 o 40 mph cruised roughly 70-72 opped-out 90-odd best rate limb came angle roduced 60 mph airspeed Establishing echnique best rate climb Elec ncdefinitely steepest climb ays off Both horsepower expended ate fuel consumption reduced ience motor run time increases angle climb perceived round fuzzy eyeball thing pro luces best rate climb varies tremen lously model modeldepending n combination power plane size Continued page 120 February 198533 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete PRODUCTS FOR ThE DI$CERNING MOOaLEN Complete Line Exhaust Systems Tuned Pipes led Tuned Pines * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsupassd Wnkmaozhin & Performance 19.35 Engine Econo-Kit $5495 Deluxe-Kit $6495 Shipping Machine cut spruce & balsa Illustrated instructions F un-Line ModelsNOTE KANSAS REDENTS P0 Box 2392 Shawnee Mission Kansas 66201 have 15 Evans expects publish somewhere man has something Jim Walkers Fireball launched UControl prewar Nats demonstrations still good-looking excellent-flying model standard ignored back brick string Free Flight everlasting postwar shift Walker sold massive numbers Fireballs Contemporary overshadowed Victor Stanzel G-Lme Tiger Shark initially flown line somewhat like tethered FF However size weight power genuine Control Line model Phenomenally many people thirsted after its classic ap pearance Old-timers revere though never built chance So let Carl Brandenberg make mouth water Recently retired devotee sport/fun modeling let him tell have modeling since early 30s Carl begins recently retired McDonnell-Douglas worked aircraft design mainly F4s F-18 bit AV-8 advanced design section chief responsibility fluid systems hydraulics pneumatics power plant fuel flight control actu ation landing gear systems aircraft However did begin flying RC until recently am very skillful pilot thus interest more-leisurely sport type flying first airplane Sig Kadet OS Max 40 engine goes handful beginner Au Close upper limit too So began build powered giider ships made Piece Cake Cox TD ball went larger Craft Aire Butter fly II 0S 10 Again lot fun saw article Evans Crosswind built old Veco 19 experimented adding aileronsas far Evans kijew first ailerons flew well -in-wide strip ailerons marginal possibly due strong dihedral effect wing Au Crosswind three-channel ship soared well enough Don Srull rolling 360s way up boomer fell love Sting published RCM Scratch-built K&B 40 fly McDonnell-Douglas RC Airplane Club have racing class consists Balsa USA Swizzle Stick 40 powered stock 25 Junkstik uses 0S Max 25 ABC finished Swiss Air Force colors built second Stick ailerons addi tional 3 span wing half bit underpowered HP 21 four-cycle fun fly ailerons really work plot thickens Destiny Cleaning house few years ago Carls mother found some 5x7 photos airplanes built 1942 1944 Hunch Yep both Continued page 124 could have RC airplane TEL EMASTER 40 should onel February 1985121 New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm use anywhere two part epoxy used 25% lighter Sandable carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves Like Basswood! 5 fI as$895 Equal over 8 Wi oz regular epoxys See dealer first write call Model Magic Pbtxkicts kic # PQ Box 19754 SePaA MN 55119 1715425-1397 I73IffW 45 Strut Ft Lauderdale Ft 33309 ENGINEERING13051 491-6175 THE LANDING GEAR PEOPLE Tirod bI landiol bars tAUt dont fit billIe property O & 0 Engiununng can salvo probtems * Custom built fluids & specs gualantuod lit * Stroll & durable withstand lbs toughest tanding * 0 & 0 Fogineoring gear will worb & hoop biggie flying * I otoch roptacemunt gear popular models Byron Ptttt Christen Eagte CAP 21 Balsa USA J-3 CUR Air Tech Pawnun Eugle Noon Big Stich Chomp Citabrla B & models Snapper Stiagor Snapper Too HLA1 11 Hobby Lobby TELEMASTER 40$5950 onty great beginners also entertaining experts Big 73 wing span 3 5 RC channels Nearly flies itself has unusuat ability fly badly con etructad Ole Reliable 1938 Old Tmnr Doc Mathews HIRTY FIRST ANNUAL9 U LEDRAm CONTROL EXPOSITION join us enjoy yourselves Un-0 questionably worlds greatest radio conTOLEDO SPORTS ARENAtrol model show Open public three ONE MAIN STREETgreat days TOLEDO OHIOAdvance tickets may ordered sending large self-CU C addressed-stamped envelope Tickets 38235 Castlex 0 Romulus Michigan 48174 Include acheck money order 0M ARCH 29 30 & 31made payable weak Signals R/C Club must please indicate expo days tickets used FRIDAY 9 am 6 pmPrices $400 per day adults $100 per day SATURDAY9am 6pmchildren l2and under tickets along aprogram will ciAU SUNDAY9 am 430 pmbe mailed back March 10 1985OH Fun/Winter Continued page 121 Vic Stanzel G Line Sharks Like other people Carl always liked lines Shark guessed scaled-up plan RC version RC Shark states Brandenberg has 05 Max 40 four-cycle spans 66 sketched semi-symmetrical airfoil hoping sport maneuver capability Wing tips tail surfaces use laminated leading trailing edges Covering Hobby Lobby Superfabricgreat stuffpainted K&B epoxy black trim RC Shark flies well RC old G-Line Shark did CL hands good pilot will almost Pattern maneuvers lam really happy its flight characteristics especially duffer like four-cycle engine really has good thrust plane sounds terrific plane entirely builtup Fuselage trussed k balsa sheeting over upper rounded sur face Wing has spruce spars balsa ribs sub-ribs leading edge spars no leading edge sheeting Very light amazingly strong am delighted Shark first scratch-designed -built airplane Au four-cycle biz Afew months back sho wed pix ofa 6-ft 6l-lb scale Farman 400 nowflown regular ly eastern Missouri Strangers identz5 its powerplant before flies say impossible fly such low power see fly first will ask pilot likes 12 OS four-cycle power plant isa 400 S four-cycle planes benefit respectable-sized props lower rpm plus handicap two-cycle syndrome insists Per haps youve noted big two-cycles Giant Scale etc being ported rpm/prop range equivalent Quadras like Early Wacos turned 1200 thats 50% idle rpm RC models Frank Tallman writes numerous vintage planes has flown says authentic FokkerD-7 its WWlprop flies circles round far outclimbs modern replicas small high-rpm engines fast-spinning little propsat double horsepower Prop selection numero uno Carl Brandenberg knows what fun fliers know Flying sparkles dont wear blinders model airplane world full things fit kings Fit kings five days ago Letmetellya went flying made-inheaven mid-October afternoonno wind balmy golden days end Doug Pratt still flyinga G-S Stinson RAM lights wprks landing lights tip light blinking strobe rudder trailing edge Droning on dusk Saito 45 RAM lights work off two microswitches miniservo Doug also 50%-up Krack ejiac early 60s smaller Ameri can Modeler Jetco spoilers power mode Enya 46 four-cycle Im making old Rookie same engine Superb four-cycle op posed 40 two-cycle small prop makes entirely different airplane smooth silk delight tool around Marvelous machine sort thing discouraged manufacturer inquiry because know troops will try fly like Stikand call dog Whats use went spoilers aUQw extremely high approaches over l obstacleswith good sink upon flare dam near STOL hits midpoint short strip Doug perfected techniques routines picture-book stuff Ive asked him add upcoming article pops spoilers halfway down downwind leg cruise power maintains cruise until late final compensating bit up goes idle coming up fence simply waits holding up sinksfor full-scale short-field plop-downs Miracle miracles vertical per formance freaks departed Exhausted perhaps So Bill Hershberger Nats Pylon Race winner years ago two generations prime mover RC research man owe him goes back Continued page 126 SAILPLANES WORLD 1501A Coffee Rd Modesto CA 95355 Sailplanes International Krause MultiPlex Wanitschek WIk & Roke Sport-Scale-F3B European Hardware Accessories Send $500 Cat & Price List 209 577-0506 124 Model Aviation nopien a, aoaIaal onoaoarnp Giant Scale Acceononles PootPaid within tO USA Nick Ziroli 29 Edgar Dri. Smhhtown NY 11717 USA World Aerobatic Champion Leos Laser escapements Buccaneers things la beled BC Hes still master pilot much curiosity cat probably has logged logs time total small club flight makes also testing some radio condition AMA Frequency Committee field-tests far-future stuff think him great ghtch hunter So Hershberger flying Kurwi glider powered OS 15 Hershberger has flown designer Kurt Wilhelm Munich hes flown God-forsaken African places Bill brought home three Kurwis inthe 60s Dale Willoughby imported Kurwi Two years ago Bill put OS 10 8-ft Kurwi also loved friend Walt Good fuselage epoxy-glass shell slim beautifully-streamlined sections profile following shape airfoil Primarily slope soaring design has low low drag aerobatics well Bill went 05 15 because its fine carburetor cut tapered flat-bottom wing 6 ft strengthened root spars Recovered Solartex six coats clear fly might fall down Performance envelope wide hotair balloon Hang bit Don Srull has Mew Gull scale racer 0S 25 published RCM 10 15 years ago moves ifsnappedto left will cross field way youd five consecutive aileron rolls got involved lightened Evans Slow Top basy Eposy Glees I. loge Cowl & Wheel Pouts V4 Mumbo Leeg Gout Foe Wlog9@SpeeWlsg hoe 1440 sq I. U lube Fleish Kit Couplet Step Stop hstoctlooe wish Pictures WeIght 16-20 toglee 24 HP $199 SPPG Direct Sales Only Tugh Ut Ply lois oud tue Coeetrewiee 64 Wbgspee Wiog Ass 640 Wlght6to6Vsths loglus 45 604or2cydo $89 Jr Stick Outstanding Large Trainer $9995 Dealer Inquiry Invited Manufacturers Quality Kits Sead $100 complete cstulq Motion its oversized 5-ft wing K&B/Veco 19 remarkable non Schnuerle engine designed Clarence Lee out production can still get K&B mufflers come old-fashioned linked ex haust venturi barreland idle tick-tock throttle closed totally deludes pilots thinking en gine dead land upon coming over edge flare hear startling tick-tock its eighth flight finally took start finish What conversation piece Don checked out Pratt Hersh berger latter really flight checks youd never dream main thing being hold full up taildragger start roll way through takeoff let go Easier Eaglet Meanwhile steer rudder make slight correction early roll Since moved Evans thrust line up clearance plane requires notch two up-trim peak speed notch two down approaches Thats downthrust effect looks like mad buzzard flies like anything elseup 40 speeds will slow-fly point flopping out sky three guys got lost Twilight Zone got passing things around Doug throbbing about half-stick cruise Enya 46 four-cycle Robbe Motor Glider gorgeous efficient highaspect ship draws eye Hes PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94544Tel 415 581-4277 Eves NewI MK II H & K Superstarters Q-35$2995 Q-50$2995 MAG II$3495 Super Hustler$3495 Zenoah$2995 Tartan Twin$3995 Roper 37$2995 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb Iinkage Complete assembled shown $14495 DEALER INQUIRES IN V/TED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX Turbo BD-4 Famous Homebuilt Light Plane figured out get small field half runwaylargely due 10-7 prop nice four-cycle idle So handed off Hershberger already air souped-up Kurwi Inci dentally strapped Bills left wing root capsule containing combination AM-FM receiver changes transmitter modules receiver converts mov ing wire plug-in hole another red Kurwi following Motor Glider Turn Kurwi turned round round like Red Baron chasing Gotha bomber thought just like WV1 Lock circle seek altitude advantage Doug throt tle set cruise 12-ft Motor Glider probably grossed least six times much mad Kurwi hadnt done aerobatics since reed-control days Now clawing height doing ham merheads around bloody Kurwi knowing wild things getting until Pratt yelped Hey trying roll airplane dont add power Laws laws man set cruise over Doug said saw new world what Motor Glider might would trying stuff next weekend Iwould use Doug test pilot Jam lousy pilot days anti biotics no kidding thought 1960 Maybe its mind tell yourself cant get locked-in limitations real imag 126Model Aviation ROUSH MFGU .velan4 Canton OH 44707 Phone 216 4846810I 7E GLOW lirebuull PLUGS NEWI IMPROVED HIgh Performance Glow Element Blow Proof Seal Six Types 3 Heat Ranges Longer Ut Only $129 Swanson Associates ox 151 Wayne 07470 med Just try Thats grabbed transmitter Don fly wing land feet needed funny mushrooms about must answer guys tried help RTF dropped wing badly up aileron Only Ken Willard provided faint clue answer plane heavy flyable Ailerons narrow strip differentialmore up down high loadings angle narrow up-aileron excessive movement spoiled killed lift volved wing panel Conclusions Dont use too much movement because narrow strip limitations widen ailerons use less movement forget differential un less have barndoor aileron suf ficient aileron chord workable modest movements probably symmetrical semi-symmetrical airfoils Differential does help down-aileron yawbut sign inadequate vertical area Almost dark railbirds didnt want go home Leaving asked disbe lief see no sleeping bags replied guys actually sit until after dark feeling good aight told full moon came up fliers being what guy offered another plane shoot go-rounds moonlight approach cloud hid moon guy still got Full moon Eloy Marez writes four-cycles MAN well indeed urges En joy upcoming building season unfor tunately dont get %$c&&c!* Au Thats direct quote forced fly year long heart bleeds all-year guys gotta build too An October day takes make yearin Land Oz Bill Winter 4432 Altura Ct Fairfax VA 22030 Radio Technique/Myers Continued page 35 load testing glow battery starter battery complete test kit Other ideas Ive mentioned few uses Accu-Tach 2 little effort can find others item might offer some difficulty will figuring out measure resistance ohms Unfortunately wont find simple way meters sensitivity too low therefore currents would have put through item under test would destructive unless want build some kind external power supply amplifier decade switch time get done will have spent price pretty good VOM So King VOM hangs onto portion realm Accu-Tach 2 comes clip leads have make own used General Radio GR twin banana plugs Continued page 130 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Anti-foam additives prevent high RPM lean out Rust preventatives protect expensive engines TypeNitro %Lubricant4 Gal24 Gal64 Gal124 Gal FAI0%Synthetic$675$595$575$550 5s50/0Synthetic$775$695$675$650 Sc5%Castor Oil$775$695$675$650 4-cycle70/0Castor/Syn$850$765$750$725 4-cycle15%Castor/Syn$995$895$850$825 lOs100/0Synthetic$895$795$750$725 lOc10%Castor Oil$895$795$750$725 R/G12%Syn/Castor$995$895$850$825 iSs15%Synthetic$995$895$850$825 20c200/0Castor Oil$1395$1250$1200$1150 25s25%Synthetic$1495$1350$1300$1250 4040%15 Syn-5 Castor$1995$1795$1750$1700 505Q0/iSynthetic$2395$2100$2050$2000 60600/oSynthetic$2695$2400$2300$2200 IN CONTINENTAL USA SHELDONSHours M/C VISAHOBBY SHOPMon Wed Fn&Sat 930 530 3157 Alum Rock AvenueThur 930-900 24-124 Gal shipped via truckSan Jose California 95127Sun 1200-500 UPSCOD-Sl65 408 251-0787 TEE PIlE IS EIGHT So spend extra money spots will last least 2 wated time r flIed years after purchase tires Flat spots poor unconditIonally durability problem wth wheels9 Wth D Marcovecch 0 Available 7/2 & 8 sizes vintage II get wheel military styles Smooth guaranteed develop flat embossed spoked covers available 0For compieie brochure send $1 io D Maivovecchio welcome dealer inquires PER PAIR PO Box 37 ingviiie 11738 February 1985127