Radio Control OLD- TIMER Dee B Mathews BACK Bad Old Days Lets take time frame jump month pre-war era immediate post-war take look RC flying 1950 visiting younger modelers fre quently stunned presumption RC models equipment have always presently Most have vague appreciation incredible changes tech nology hobby has undergone last three decades crude homemade single-channel radios DeSoto Lanzo Good brothers other pioneers 1930s 1940s devel j I PORTANT HELP CONTROL AIR FLOW OVER PANELS OURING TURNSREMOVABLE COWL FOR ACCESS TO ENGINE IGNITION BATTERIES 66JLZZ~SLOT SECTION AT X TYPICAL SECTION AT V T GENE FOXWORTHYS HOOSIER HOTS HOT 1950 NATIONALS R/C WINNER DESIGNED BY KENNY ERNST FROM AIR TRAILS MAY 1950 AEROMODELLER ANNUAL 1950 SPAN 75 1/2 CHORD 12- POWER FORSTER 29 --0______ ___ MAST HOUSING ESCAPEMENT RUBBER IS REMOVABLE B PLUGS IX-SEC COILESCAPEMENT -----~BATTERIES END GOOD BROS LBATT t IGN ESCAPEMENT AUSTIN GOOD BROSFILAMENTALL FUSE MEMBERS TIMERRADIOBATTERIESI/4SOHARD BALSA 03 /2 WHEELS IHJCISCALE IN INCHES 024BB1012 oped through grueling hours trial mostly error early experiments work much electronics genius modeler equipment ham bands well beyond abilities ordinary folks No commercially-available equip ment fully-assembled form marketed Little changed 1950 althougb Good brothers design several others now available commercially Rubber-driven escape ments gas tubes mechanical relays heavy dry cell batteries still accepted standards Receivers constantly out tune battery voltage dropped units retuned aid ammeter Most units used movable-iron-core slugs tuning Seem ingly impossible fly twice row sending helper off transmitter unless ground-based case model moved fiddled slugs trying get maximum rise drop meter voltage change opened closed relay passing current magnet escape ment thereby activating its pawl moving rudder Transistors research labs Bell Ni-Cd batteries extremely expensive rare semiconductor micro-chips ard development improved circuitry provided increased reliability sen sitivity advances pretty much limited available components interesting note first subminiature least light weight receivers product hearing aid manufacturer Relays adversely affected engine vibra tion point arcing gap changes loss spring tension Escapements notoriously critical number winds rubber striptoo much pawls would catch making some wild rapid rudder move ments other hand enough power available rubberbands linkages would bind right left making nastier things battery pack consisted h-e 30 45 volt bias battery set flashligh units receivers tube filament another energizing escapement batteries alone weighed modem flight packand rudder-only Receivers encased wrapped foam rather common practice suspend four corners cabin rubberbands hammock-like arrangement hoped isolate its relay Heres what made winning rudder-only Ignition-engine RC model late 1 940s 38 Model Aviation Shades 19501 Its Hoosier Hot Shotbut built just recently Dick Foxworthythe brother Gene Foxworthy used design win RC 1950 Nats shots Dick Foxworthys Hot Shot Doc redrew plans faded tattered original ana UICK bUilt borne modernization nas done tower tail used house escapement rubbernow hangeronto receiver antenna silk dope covering has replaced MonoKote rudder-only has changed digital proportional 3-channel rudder elevator throttle wing tail rubberband hold-downs have changed nylon bolts Fox 25 powers high dihedral wing slots show prominently photos engine vibration Control could call consisted full left rudder transmitter button pushed followed neutral full right rudder next time button hit needed remember previous command times continue left right turn blip past opposite rudder throw sort pushed-blipped-pushed own experience era successful 900 turn success left followed right turn extraordinary actually landing model original field source ecstasy wonder looked designers like Bill Winter getting consistent flights gurus Bill editor MAN time produced superb single-channel designs first successful flight Windy Joe design MAN using English ED RC system OK Cub 14 power Actually Windy Joe Old-Timer Free Flight concept radio added interrupt its flight path As matter fact looking old plans again see touch Old Square Sides poking through except time owned up designing rather blaming Mr [ Sprague pen name used Square Sides primitive opening editorials MAN back Bill related flying session pushbutton failed Rather call day just disconnected transmitter cord flew touching two wires together about primitive RC champ 1950 further explore far section hobby has come lets take Continued page 129 f C rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360 model mt mODEL IPORT TOTEM j Both lid sides open access anbron tray arganizer insides S 21 Old Time Gas 12 HL Gliders KIT11 Contest Rubber Send 50C for4 Satellite Kits 82/83 catalog3 Nastalgia Power Pacifiers &OF GOOD STUFF FAX Model Supply Iit~97 ance CA 90510 Ardens glow plug year two seasons successful flying completed Foxworthy drew up Hoosier Hot Shot forA ir Trails construction article run May 1950 Rather ironic fact design won National Championship few months later As understand photos used article second unit drawings reflect changes used third unit Nationals winner third model constructed just prior Dallas Nats 1950 since other two destroyed along Genes RC design equipment disastrous garage fire August 1949 As consequence new model also used Citizenship radio equipment de veloped contract Vernon McNabb IDEA electronics firm Foxworthy worked time Nats-winning model ONLY 17995 * New Meitel Craules nO05 000015 licIn repuire aid pog Fuselage crudlos ad1osi up ic 0 wide nh nod inioscope 51 Holds paper towels spray bottle gal nv subsequently sold McNabb used flying test bed years Hossier Indiana else Some quotes May 1950 Air Trails article further illuminate state art history average radio control model has spiral dive after another have seen first-class Free Flight job spiral dive bad launch gust wind dis turbed its normal flight path movement rudderbyradioisineffectthesame.. twin rudders chosen two reasons have practical method lowering CLA Center Lateral Area concept much prominence time RMcM secondly get movable portion far center line possible rage radio model builder has always cursed big trouble-maker trimmingwith power would get too much turn power off turn would too little Hot Shot turning radius difference power off would have measured inches st beginners Radio Control have mistaken belief takes power really needed Now hasnt changed particle 32 years Doc making control system essen tial fits connections free sloppy ve found advantage larger B batteries make up additional 4 6 ounces weight Note saxs additional 4 6 ounces Doc. 30E battery plane has made 125 flights last year pencells can generally holdout 10 15 flights course good idea check regularly discard go down below 12 volts about Test fly radio place would fooling yourself fly empty After model trimmed free flight radio equipment can used final piece advice seems surprisingly applicable three decades later few things remember about Radio Control 1 Dont overpower plane 2 Dont overlook radio manufacturers instruc tions 3 Test radio oftenpower power off 4 Dont forget turn switches before launching Time marches Doc deeply indebted Don Jenkins Indianapolis research Hoosier Hot Shot remembrances former boss Gene Foxworthy Don chased down originalbut badly fadeddrawings wrote numerous letters Dick Gene Foxworthy generally got us involved story distinct pleasure resurrecting drawings workable form sending copies back Indianapolis Dick Foxworthy constructed two new models using con temporary engines RC gear retaining old escapement rubber tail post authenticity shown photos other delivered Gene now living West Virginia recuperating bypass surgery last report excited Gene hard work number RC models after nearly 30 years inactivity Let us hope recalls four rules follows letter Outta room butnext time around well bring some recollections Hot Shot era now need alert SAM types Louisiana Mississippi east Texas adjoining areas Hal Cullins 3483 Coolidge St Baker LA 70714 trying contact transplanted West Coaster looking others interested Old-Timers 1 30 Model Aviation DC Mode Spo compact lightiseight 21 n tO n 51t Special coated surface toni wate resistant Carries star ter 12 u buttery power panel transmitter & has honks coiling glow plug & starter cords un cailen rn, en CI * All Alominam folding logo / ModNa See Dealer firstl 14573 Grover Itreat DC Product Inc Omaha flebraika 68144 SCALE DOCUIv1ENTATIDN SCALt DRAWINGS as,zj2 MO Ott PLANS 1982 AIRPLANE CATALOGS $200 lJ REPLA-TECH ~INTE9NATIONAL IMlE KENZIE H5NY N/IDA OREGON S7488 B Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Triplanes5 awards Scale 2 gine 60 Send 75 latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr Williamsville NY 14221 716-632-4838 FARMAN 451 MOSOUITO True GENTLEMAN S PLANE Son easy building An GelighIlul gentle vIsion ISO air No sting MosqulO5l PLANS 2 SIZES Falt size highly detelled GENTLE GIANT 1108 ci OUAORA82400 GENTLE LADY 155110 40 504-cyCle 01100SI 700 GIber supeih giunl scale clansFull see 9 FOKKER OVttl 2-4 in92500 9 PT-Oh OaedrenKinritnS2800 9 PIPER L-4 Militety J-3 Cab Onedre$2000 Send 0555 ohCnk Plans seol rolled UPS POSTPAID moneg order lornigo orders add 40% al mail TAYLORCRAFT Send large sase brochules LEE TAYLORall Taylototalt Elans otteringo 206 WIllow AsenneComing soon8 Otumman Tigeil Rneeoitle CA 959785 yarga Kacsina SILK $/Y12 DISCOUNTS ON $495/YD SO YD ROLLSa RedYeI low Royal Blue Fine Otialily Model Building Aaiy Length Max 50 Yd SILK COVERS BEST LIGHT STRONG- ECONOMICAL SHIPPINGi ADO 50 FOREIGN 150/ORDER NX RES Add 4% BROWNSELL FLAG B DECAL CO 121 LAUREL ROAD NEW CITY NY 914-634-850010956 join possibly forming SAM chapteror least get together some fun-fly activities phone 504 774-9647 Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Aerobatics/Van Putte Continued page 37 misplaced Regardless heres slightly edited version Genes letter As B-47 operator stationed Topeka KS circa 1960 member RC club read about Knox gelatin routine literature day tried wing tail Stormer coat water/gelatin mixture sealed silk well three coats butyrate dope gave gorgeous translucent finish took club meeting basked boys admiration gave lecture done -At next club meeting chap high state dudgeon displayed silk-covered wing pitiful behold looked finished stucco S@# said pointing Look what caused to wing Post mortem revealed mixed gelatin dope Egad perfect finishing method balsa-sheeted surfaces especially compound curves brush two three coats butyrate dope sanding fuzz off time Drape -oz glass cloth over surface piece whole fuselage Brush dope through glass cloth pushing out wrinkles folds ahead brush making ragged overlapped seam bottom Brush two three coats talcum/dope mixture SigSuper fill give good sanding Shoot color gives durable good lightweight finish old flattop Stormer Vintage 1960-1962 younger readers R VP still best hot dogging aircraft mods original design except bolt-on wing landing gear plus fixed horizontal stab Since Stall Turn took half months column Three Axial Rolls took similar amount last months column plan skip month before resuming descriptions perform Novice/Sportsman class ma neuvers Maybe other month appropriate mix Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Giant Scale/Beckman Continued page 41 noted power output antenna extended first off bad turned sure enough bad power output 40db down other words putting Out less 1 / 100th power other transmitter No wonder didnt have good range Now find out Just getting ready start tearing transmitter occurred should stop Easter egg hunting use head problem RF condition always finally gotten pinned down transmitter already knew changing RF modules transmitter didnt make difference possible very probable both modules same defect other hand likely fault something use no matter module used batteries good shape power being delivered RF module thing left antenna antennas dont go bad After its just length metal Well its easy enough find out swapped antennas two transmitters just like song says Everything bad good again Hindsight being perfect now obvious Although transmitter fairly new Ace Silver Seven built last year installed UHF connector antenna used antenna already five six years old Just recently noticed bit magazine columns about collapsible anten nas can get dirty deteriorate Although time said myself Yeah can happen never happened meso didnt really register Now inconsistent symptoms explained fairly good range antenna down poor up good range sometimes extend collapse antenna thing changes heat-sensitive transistor legitimate failure served mask additional troubles new antenna put transmitter old disassembled inspected amazed amount dirty oily crud sliding contacts make connections between telescoping sections antenna now carry small bottle alcohol toolbox Tam trying develop habit always wiping antenna clean before ever collapsing Saturday everything checked out perfectly radio solid Magnum II purred like kitten bird handled better ground expected highspeed taxi run down runway indicated wsa ready fly After months stumbling around first flight almost anti-climactic Tomahawk flew flew well As expected Continued page 134 January 1983 131 FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve its easy starting reliability tur Hot tine 5th t4t-ltSt FOX MFG Ca 5305 TOWSON AVE FORT SMITH ARK 72901
Edition: Model Aviation - 1983/01
Page Numbers: 38, 39, 129, 130, 131
Radio Control OLD- TIMER Dee B Mathews BACK Bad Old Days Lets take time frame jump month pre-war era immediate post-war take look RC flying 1950 visiting younger modelers fre quently stunned presumption RC models equipment have always presently Most have vague appreciation incredible changes tech nology hobby has undergone last three decades crude homemade single-channel radios DeSoto Lanzo Good brothers other pioneers 1930s 1940s devel j I PORTANT HELP CONTROL AIR FLOW OVER PANELS OURING TURNSREMOVABLE COWL FOR ACCESS TO ENGINE IGNITION BATTERIES 66JLZZ~SLOT SECTION AT X TYPICAL SECTION AT V T GENE FOXWORTHYS HOOSIER HOTS HOT 1950 NATIONALS R/C WINNER DESIGNED BY KENNY ERNST FROM AIR TRAILS MAY 1950 AEROMODELLER ANNUAL 1950 SPAN 75 1/2 CHORD 12- POWER FORSTER 29 --0______ ___ MAST HOUSING ESCAPEMENT RUBBER IS REMOVABLE B PLUGS IX-SEC COILESCAPEMENT -----~BATTERIES END GOOD BROS LBATT t IGN ESCAPEMENT AUSTIN GOOD BROSFILAMENTALL FUSE MEMBERS TIMERRADIOBATTERIESI/4SOHARD BALSA 03 /2 WHEELS IHJCISCALE IN INCHES 024BB1012 oped through grueling hours trial mostly error early experiments work much electronics genius modeler equipment ham bands well beyond abilities ordinary folks No commercially-available equip ment fully-assembled form marketed Little changed 1950 althougb Good brothers design several others now available commercially Rubber-driven escape ments gas tubes mechanical relays heavy dry cell batteries still accepted standards Receivers constantly out tune battery voltage dropped units retuned aid ammeter Most units used movable-iron-core slugs tuning Seem ingly impossible fly twice row sending helper off transmitter unless ground-based case model moved fiddled slugs trying get maximum rise drop meter voltage change opened closed relay passing current magnet escape ment thereby activating its pawl moving rudder Transistors research labs Bell Ni-Cd batteries extremely expensive rare semiconductor micro-chips ard development improved circuitry provided increased reliability sen sitivity advances pretty much limited available components interesting note first subminiature least light weight receivers product hearing aid manufacturer Relays adversely affected engine vibra tion point arcing gap changes loss spring tension Escapements notoriously critical number winds rubber striptoo much pawls would catch making some wild rapid rudder move ments other hand enough power available rubberbands linkages would bind right left making nastier things battery pack consisted h-e 30 45 volt bias battery set flashligh units receivers tube filament another energizing escapement batteries alone weighed modem flight packand rudder-only Receivers encased wrapped foam rather common practice suspend four corners cabin rubberbands hammock-like arrangement hoped isolate its relay Heres what made winning rudder-only Ignition-engine RC model late 1 940s 38 Model Aviation Shades 19501 Its Hoosier Hot Shotbut built just recently Dick Foxworthythe brother Gene Foxworthy used design win RC 1950 Nats shots Dick Foxworthys Hot Shot Doc redrew plans faded tattered original ana UICK bUilt borne modernization nas done tower tail used house escapement rubbernow hangeronto receiver antenna silk dope covering has replaced MonoKote rudder-only has changed digital proportional 3-channel rudder elevator throttle wing tail rubberband hold-downs have changed nylon bolts Fox 25 powers high dihedral wing slots show prominently photos engine vibration Control could call consisted full left rudder transmitter button pushed followed neutral full right rudder next time button hit needed remember previous command times continue left right turn blip past opposite rudder throw sort pushed-blipped-pushed own experience era successful 900 turn success left followed right turn extraordinary actually landing model original field source ecstasy wonder looked designers like Bill Winter getting consistent flights gurus Bill editor MAN time produced superb single-channel designs first successful flight Windy Joe design MAN using English ED RC system OK Cub 14 power Actually Windy Joe Old-Timer Free Flight concept radio added interrupt its flight path As matter fact looking old plans again see touch Old Square Sides poking through except time owned up designing rather blaming Mr [ Sprague pen name used Square Sides primitive opening editorials MAN back Bill related flying session pushbutton failed Rather call day just disconnected transmitter cord flew touching two wires together about primitive RC champ 1950 further explore far section hobby has come lets take Continued page 129 f C rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360 model mt mODEL IPORT TOTEM j Both lid sides open access anbron tray arganizer insides S 21 Old Time Gas 12 HL Gliders KIT11 Contest Rubber Send 50C for4 Satellite Kits 82/83 catalog3 Nastalgia Power Pacifiers &OF GOOD STUFF FAX Model Supply Iit~97 ance CA 90510 Ardens glow plug year two seasons successful flying completed Foxworthy drew up Hoosier Hot Shot forA ir Trails construction article run May 1950 Rather ironic fact design won National Championship few months later As understand photos used article second unit drawings reflect changes used third unit Nationals winner third model constructed just prior Dallas Nats 1950 since other two destroyed along Genes RC design equipment disastrous garage fire August 1949 As consequence new model also used Citizenship radio equipment de veloped contract Vernon McNabb IDEA electronics firm Foxworthy worked time Nats-winning model ONLY 17995 * New Meitel Craules nO05 000015 licIn repuire aid pog Fuselage crudlos ad1osi up ic 0 wide nh nod inioscope 51 Holds paper towels spray bottle gal nv subsequently sold McNabb used flying test bed years Hossier Indiana else Some quotes May 1950 Air Trails article further illuminate state art history average radio control model has spiral dive after another have seen first-class Free Flight job spiral dive bad launch gust wind dis turbed its normal flight path movement rudderbyradioisineffectthesame.. twin rudders chosen two reasons have practical method lowering CLA Center Lateral Area concept much prominence time RMcM secondly get movable portion far center line possible rage radio model builder has always cursed big trouble-maker trimmingwith power would get too much turn power off turn would too little Hot Shot turning radius difference power off would have measured inches st beginners Radio Control have mistaken belief takes power really needed Now hasnt changed particle 32 years Doc making control system essen tial fits connections free sloppy ve found advantage larger B batteries make up additional 4 6 ounces weight Note saxs additional 4 6 ounces Doc. 30E battery plane has made 125 flights last year pencells can generally holdout 10 15 flights course good idea check regularly discard go down below 12 volts about Test fly radio place would fooling yourself fly empty After model trimmed free flight radio equipment can used final piece advice seems surprisingly applicable three decades later few things remember about Radio Control 1 Dont overpower plane 2 Dont overlook radio manufacturers instruc tions 3 Test radio oftenpower power off 4 Dont forget turn switches before launching Time marches Doc deeply indebted Don Jenkins Indianapolis research Hoosier Hot Shot remembrances former boss Gene Foxworthy Don chased down originalbut badly fadeddrawings wrote numerous letters Dick Gene Foxworthy generally got us involved story distinct pleasure resurrecting drawings workable form sending copies back Indianapolis Dick Foxworthy constructed two new models using con temporary engines RC gear retaining old escapement rubber tail post authenticity shown photos other delivered Gene now living West Virginia recuperating bypass surgery last report excited Gene hard work number RC models after nearly 30 years inactivity Let us hope recalls four rules follows letter Outta room butnext time around well bring some recollections Hot Shot era now need alert SAM types Louisiana Mississippi east Texas adjoining areas Hal Cullins 3483 Coolidge St Baker LA 70714 trying contact transplanted West Coaster looking others interested Old-Timers 1 30 Model Aviation DC Mode Spo compact lightiseight 21 n tO n 51t Special coated surface toni wate resistant Carries star ter 12 u buttery power panel transmitter & has honks coiling glow plug & starter cords un cailen rn, en CI * All Alominam folding logo / ModNa See Dealer firstl 14573 Grover Itreat DC Product Inc Omaha flebraika 68144 SCALE DOCUIv1ENTATIDN SCALt DRAWINGS as,zj2 MO Ott PLANS 1982 AIRPLANE CATALOGS $200 lJ REPLA-TECH ~INTE9NATIONAL IMlE KENZIE H5NY N/IDA OREGON S7488 B Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Triplanes5 awards Scale 2 gine 60 Send 75 latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr Williamsville NY 14221 716-632-4838 FARMAN 451 MOSOUITO True GENTLEMAN S PLANE Son easy building An GelighIlul gentle vIsion ISO air No sting MosqulO5l PLANS 2 SIZES Falt size highly detelled GENTLE GIANT 1108 ci OUAORA82400 GENTLE LADY 155110 40 504-cyCle 01100SI 700 GIber supeih giunl scale clansFull see 9 FOKKER OVttl 2-4 in92500 9 PT-Oh OaedrenKinritnS2800 9 PIPER L-4 Militety J-3 Cab Onedre$2000 Send 0555 ohCnk Plans seol rolled UPS POSTPAID moneg order lornigo orders add 40% al mail TAYLORCRAFT Send large sase brochules LEE TAYLORall Taylototalt Elans otteringo 206 WIllow AsenneComing soon8 Otumman Tigeil Rneeoitle CA 959785 yarga Kacsina SILK $/Y12 DISCOUNTS ON $495/YD SO YD ROLLSa RedYeI low Royal Blue Fine Otialily Model Building Aaiy Length Max 50 Yd SILK COVERS BEST LIGHT STRONG- ECONOMICAL SHIPPINGi ADO 50 FOREIGN 150/ORDER NX RES Add 4% BROWNSELL FLAG B DECAL CO 121 LAUREL ROAD NEW CITY NY 914-634-850010956 join possibly forming SAM chapteror least get together some fun-fly activities phone 504 774-9647 Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Aerobatics/Van Putte Continued page 37 misplaced Regardless heres slightly edited version Genes letter As B-47 operator stationed Topeka KS circa 1960 member RC club read about Knox gelatin routine literature day tried wing tail Stormer coat water/gelatin mixture sealed silk well three coats butyrate dope gave gorgeous translucent finish took club meeting basked boys admiration gave lecture done -At next club meeting chap high state dudgeon displayed silk-covered wing pitiful behold looked finished stucco S@# said pointing Look what caused to wing Post mortem revealed mixed gelatin dope Egad perfect finishing method balsa-sheeted surfaces especially compound curves brush two three coats butyrate dope sanding fuzz off time Drape -oz glass cloth over surface piece whole fuselage Brush dope through glass cloth pushing out wrinkles folds ahead brush making ragged overlapped seam bottom Brush two three coats talcum/dope mixture SigSuper fill give good sanding Shoot color gives durable good lightweight finish old flattop Stormer Vintage 1960-1962 younger readers R VP still best hot dogging aircraft mods original design except bolt-on wing landing gear plus fixed horizontal stab Since Stall Turn took half months column Three Axial Rolls took similar amount last months column plan skip month before resuming descriptions perform Novice/Sportsman class ma neuvers Maybe other month appropriate mix Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Giant Scale/Beckman Continued page 41 noted power output antenna extended first off bad turned sure enough bad power output 40db down other words putting Out less 1 / 100th power other transmitter No wonder didnt have good range Now find out Just getting ready start tearing transmitter occurred should stop Easter egg hunting use head problem RF condition always finally gotten pinned down transmitter already knew changing RF modules transmitter didnt make difference possible very probable both modules same defect other hand likely fault something use no matter module used batteries good shape power being delivered RF module thing left antenna antennas dont go bad After its just length metal Well its easy enough find out swapped antennas two transmitters just like song says Everything bad good again Hindsight being perfect now obvious Although transmitter fairly new Ace Silver Seven built last year installed UHF connector antenna used antenna already five six years old Just recently noticed bit magazine columns about collapsible anten nas can get dirty deteriorate Although time said myself Yeah can happen never happened meso didnt really register Now inconsistent symptoms explained fairly good range antenna down poor up good range sometimes extend collapse antenna thing changes heat-sensitive transistor legitimate failure served mask additional troubles new antenna put transmitter old disassembled inspected amazed amount dirty oily crud sliding contacts make connections between telescoping sections antenna now carry small bottle alcohol toolbox Tam trying develop habit always wiping antenna clean before ever collapsing Saturday everything checked out perfectly radio solid Magnum II purred like kitten bird handled better ground expected highspeed taxi run down runway indicated wsa ready fly After months stumbling around first flight almost anti-climactic Tomahawk flew flew well As expected Continued page 134 January 1983 131 FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve its easy starting reliability tur Hot tine 5th t4t-ltSt FOX MFG Ca 5305 TOWSON AVE FORT SMITH ARK 72901
Edition: Model Aviation - 1983/01
Page Numbers: 38, 39, 129, 130, 131
Radio Control OLD- TIMER Dee B Mathews BACK Bad Old Days Lets take time frame jump month pre-war era immediate post-war take look RC flying 1950 visiting younger modelers fre quently stunned presumption RC models equipment have always presently Most have vague appreciation incredible changes tech nology hobby has undergone last three decades crude homemade single-channel radios DeSoto Lanzo Good brothers other pioneers 1930s 1940s devel j I PORTANT HELP CONTROL AIR FLOW OVER PANELS OURING TURNSREMOVABLE COWL FOR ACCESS TO ENGINE IGNITION BATTERIES 66JLZZ~SLOT SECTION AT X TYPICAL SECTION AT V T GENE FOXWORTHYS HOOSIER HOTS HOT 1950 NATIONALS R/C WINNER DESIGNED BY KENNY ERNST FROM AIR TRAILS MAY 1950 AEROMODELLER ANNUAL 1950 SPAN 75 1/2 CHORD 12- POWER FORSTER 29 --0______ ___ MAST HOUSING ESCAPEMENT RUBBER IS REMOVABLE B PLUGS IX-SEC COILESCAPEMENT -----~BATTERIES END GOOD BROS LBATT t IGN ESCAPEMENT AUSTIN GOOD BROSFILAMENTALL FUSE MEMBERS TIMERRADIOBATTERIESI/4SOHARD BALSA 03 /2 WHEELS IHJCISCALE IN INCHES 024BB1012 oped through grueling hours trial mostly error early experiments work much electronics genius modeler equipment ham bands well beyond abilities ordinary folks No commercially-available equip ment fully-assembled form marketed Little changed 1950 althougb Good brothers design several others now available commercially Rubber-driven escape ments gas tubes mechanical relays heavy dry cell batteries still accepted standards Receivers constantly out tune battery voltage dropped units retuned aid ammeter Most units used movable-iron-core slugs tuning Seem ingly impossible fly twice row sending helper off transmitter unless ground-based case model moved fiddled slugs trying get maximum rise drop meter voltage change opened closed relay passing current magnet escape ment thereby activating its pawl moving rudder Transistors research labs Bell Ni-Cd batteries extremely expensive rare semiconductor micro-chips ard development improved circuitry provided increased reliability sen sitivity advances pretty much limited available components interesting note first subminiature least light weight receivers product hearing aid manufacturer Relays adversely affected engine vibra tion point arcing gap changes loss spring tension Escapements notoriously critical number winds rubber striptoo much pawls would catch making some wild rapid rudder move ments other hand enough power available rubberbands linkages would bind right left making nastier things battery pack consisted h-e 30 45 volt bias battery set flashligh units receivers tube filament another energizing escapement batteries alone weighed modem flight packand rudder-only Receivers encased wrapped foam rather common practice suspend four corners cabin rubberbands hammock-like arrangement hoped isolate its relay Heres what made winning rudder-only Ignition-engine RC model late 1 940s 38 Model Aviation Shades 19501 Its Hoosier Hot Shotbut built just recently Dick Foxworthythe brother Gene Foxworthy used design win RC 1950 Nats shots Dick Foxworthys Hot Shot Doc redrew plans faded tattered original ana UICK bUilt borne modernization nas done tower tail used house escapement rubbernow hangeronto receiver antenna silk dope covering has replaced MonoKote rudder-only has changed digital proportional 3-channel rudder elevator throttle wing tail rubberband hold-downs have changed nylon bolts Fox 25 powers high dihedral wing slots show prominently photos engine vibration Control could call consisted full left rudder transmitter button pushed followed neutral full right rudder next time button hit needed remember previous command times continue left right turn blip past opposite rudder throw sort pushed-blipped-pushed own experience era successful 900 turn success left followed right turn extraordinary actually landing model original field source ecstasy wonder looked designers like Bill Winter getting consistent flights gurus Bill editor MAN time produced superb single-channel designs first successful flight Windy Joe design MAN using English ED RC system OK Cub 14 power Actually Windy Joe Old-Timer Free Flight concept radio added interrupt its flight path As matter fact looking old plans again see touch Old Square Sides poking through except time owned up designing rather blaming Mr [ Sprague pen name used Square Sides primitive opening editorials MAN back Bill related flying session pushbutton failed Rather call day just disconnected transmitter cord flew touching two wires together about primitive RC champ 1950 further explore far section hobby has come lets take Continued page 129 f C rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360 model mt mODEL IPORT TOTEM j Both lid sides open access anbron tray arganizer insides S 21 Old Time Gas 12 HL Gliders KIT11 Contest Rubber Send 50C for4 Satellite Kits 82/83 catalog3 Nastalgia Power Pacifiers &OF GOOD STUFF FAX Model Supply Iit~97 ance CA 90510 Ardens glow plug year two seasons successful flying completed Foxworthy drew up Hoosier Hot Shot forA ir Trails construction article run May 1950 Rather ironic fact design won National Championship few months later As understand photos used article second unit drawings reflect changes used third unit Nationals winner third model constructed just prior Dallas Nats 1950 since other two destroyed along Genes RC design equipment disastrous garage fire August 1949 As consequence new model also used Citizenship radio equipment de veloped contract Vernon McNabb IDEA electronics firm Foxworthy worked time Nats-winning model ONLY 17995 * New Meitel Craules nO05 000015 licIn repuire aid pog Fuselage crudlos ad1osi up ic 0 wide nh nod inioscope 51 Holds paper towels spray bottle gal nv subsequently sold McNabb used flying test bed years Hossier Indiana else Some quotes May 1950 Air Trails article further illuminate state art history average radio control model has spiral dive after another have seen first-class Free Flight job spiral dive bad launch gust wind dis turbed its normal flight path movement rudderbyradioisineffectthesame.. twin rudders chosen two reasons have practical method lowering CLA Center Lateral Area concept much prominence time RMcM secondly get movable portion far center line possible rage radio model builder has always cursed big trouble-maker trimmingwith power would get too much turn power off turn would too little Hot Shot turning radius difference power off would have measured inches st beginners Radio Control have mistaken belief takes power really needed Now hasnt changed particle 32 years Doc making control system essen tial fits connections free sloppy ve found advantage larger B batteries make up additional 4 6 ounces weight Note saxs additional 4 6 ounces Doc. 30E battery plane has made 125 flights last year pencells can generally holdout 10 15 flights course good idea check regularly discard go down below 12 volts about Test fly radio place would fooling yourself fly empty After model trimmed free flight radio equipment can used final piece advice seems surprisingly applicable three decades later few things remember about Radio Control 1 Dont overpower plane 2 Dont overlook radio manufacturers instruc tions 3 Test radio oftenpower power off 4 Dont forget turn switches before launching Time marches Doc deeply indebted Don Jenkins Indianapolis research Hoosier Hot Shot remembrances former boss Gene Foxworthy Don chased down originalbut badly fadeddrawings wrote numerous letters Dick Gene Foxworthy generally got us involved story distinct pleasure resurrecting drawings workable form sending copies back Indianapolis Dick Foxworthy constructed two new models using con temporary engines RC gear retaining old escapement rubber tail post authenticity shown photos other delivered Gene now living West Virginia recuperating bypass surgery last report excited Gene hard work number RC models after nearly 30 years inactivity Let us hope recalls four rules follows letter Outta room butnext time around well bring some recollections Hot Shot era now need alert SAM types Louisiana Mississippi east Texas adjoining areas Hal Cullins 3483 Coolidge St Baker LA 70714 trying contact transplanted West Coaster looking others interested Old-Timers 1 30 Model Aviation DC Mode Spo compact lightiseight 21 n tO n 51t Special coated surface toni wate resistant Carries star ter 12 u buttery power panel transmitter & has honks coiling glow plug & starter cords un cailen rn, en CI * All Alominam folding logo / ModNa See Dealer firstl 14573 Grover Itreat DC Product Inc Omaha flebraika 68144 SCALE DOCUIv1ENTATIDN SCALt DRAWINGS as,zj2 MO Ott PLANS 1982 AIRPLANE CATALOGS $200 lJ REPLA-TECH ~INTE9NATIONAL IMlE KENZIE H5NY N/IDA OREGON S7488 B Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Triplanes5 awards Scale 2 gine 60 Send 75 latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr Williamsville NY 14221 716-632-4838 FARMAN 451 MOSOUITO True GENTLEMAN S PLANE Son easy building An GelighIlul gentle vIsion ISO air No sting MosqulO5l PLANS 2 SIZES Falt size highly detelled GENTLE GIANT 1108 ci OUAORA82400 GENTLE LADY 155110 40 504-cyCle 01100SI 700 GIber supeih giunl scale clansFull see 9 FOKKER OVttl 2-4 in92500 9 PT-Oh OaedrenKinritnS2800 9 PIPER L-4 Militety J-3 Cab Onedre$2000 Send 0555 ohCnk Plans seol rolled UPS POSTPAID moneg order lornigo orders add 40% al mail TAYLORCRAFT Send large sase brochules LEE TAYLORall Taylototalt Elans otteringo 206 WIllow AsenneComing soon8 Otumman Tigeil Rneeoitle CA 959785 yarga Kacsina SILK $/Y12 DISCOUNTS ON $495/YD SO YD ROLLSa RedYeI low Royal Blue Fine Otialily Model Building Aaiy Length Max 50 Yd SILK COVERS BEST LIGHT STRONG- ECONOMICAL SHIPPINGi ADO 50 FOREIGN 150/ORDER NX RES Add 4% BROWNSELL FLAG B DECAL CO 121 LAUREL ROAD NEW CITY NY 914-634-850010956 join possibly forming SAM chapteror least get together some fun-fly activities phone 504 774-9647 Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Aerobatics/Van Putte Continued page 37 misplaced Regardless heres slightly edited version Genes letter As B-47 operator stationed Topeka KS circa 1960 member RC club read about Knox gelatin routine literature day tried wing tail Stormer coat water/gelatin mixture sealed silk well three coats butyrate dope gave gorgeous translucent finish took club meeting basked boys admiration gave lecture done -At next club meeting chap high state dudgeon displayed silk-covered wing pitiful behold looked finished stucco S@# said pointing Look what caused to wing Post mortem revealed mixed gelatin dope Egad perfect finishing method balsa-sheeted surfaces especially compound curves brush two three coats butyrate dope sanding fuzz off time Drape -oz glass cloth over surface piece whole fuselage Brush dope through glass cloth pushing out wrinkles folds ahead brush making ragged overlapped seam bottom Brush two three coats talcum/dope mixture SigSuper fill give good sanding Shoot color gives durable good lightweight finish old flattop Stormer Vintage 1960-1962 younger readers R VP still best hot dogging aircraft mods original design except bolt-on wing landing gear plus fixed horizontal stab Since Stall Turn took half months column Three Axial Rolls took similar amount last months column plan skip month before resuming descriptions perform Novice/Sportsman class ma neuvers Maybe other month appropriate mix Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Giant Scale/Beckman Continued page 41 noted power output antenna extended first off bad turned sure enough bad power output 40db down other words putting Out less 1 / 100th power other transmitter No wonder didnt have good range Now find out Just getting ready start tearing transmitter occurred should stop Easter egg hunting use head problem RF condition always finally gotten pinned down transmitter already knew changing RF modules transmitter didnt make difference possible very probable both modules same defect other hand likely fault something use no matter module used batteries good shape power being delivered RF module thing left antenna antennas dont go bad After its just length metal Well its easy enough find out swapped antennas two transmitters just like song says Everything bad good again Hindsight being perfect now obvious Although transmitter fairly new Ace Silver Seven built last year installed UHF connector antenna used antenna already five six years old Just recently noticed bit magazine columns about collapsible anten nas can get dirty deteriorate Although time said myself Yeah can happen never happened meso didnt really register Now inconsistent symptoms explained fairly good range antenna down poor up good range sometimes extend collapse antenna thing changes heat-sensitive transistor legitimate failure served mask additional troubles new antenna put transmitter old disassembled inspected amazed amount dirty oily crud sliding contacts make connections between telescoping sections antenna now carry small bottle alcohol toolbox Tam trying develop habit always wiping antenna clean before ever collapsing Saturday everything checked out perfectly radio solid Magnum II purred like kitten bird handled better ground expected highspeed taxi run down runway indicated wsa ready fly After months stumbling around first flight almost anti-climactic Tomahawk flew flew well As expected Continued page 134 January 1983 131 FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve its easy starting reliability tur Hot tine 5th t4t-ltSt FOX MFG Ca 5305 TOWSON AVE FORT SMITH ARK 72901
Edition: Model Aviation - 1983/01
Page Numbers: 38, 39, 129, 130, 131
Radio Control OLD- TIMER Dee B Mathews BACK Bad Old Days Lets take time frame jump month pre-war era immediate post-war take look RC flying 1950 visiting younger modelers fre quently stunned presumption RC models equipment have always presently Most have vague appreciation incredible changes tech nology hobby has undergone last three decades crude homemade single-channel radios DeSoto Lanzo Good brothers other pioneers 1930s 1940s devel j I PORTANT HELP CONTROL AIR FLOW OVER PANELS OURING TURNSREMOVABLE COWL FOR ACCESS TO ENGINE IGNITION BATTERIES 66JLZZ~SLOT SECTION AT X TYPICAL SECTION AT V T GENE FOXWORTHYS HOOSIER HOTS HOT 1950 NATIONALS R/C WINNER DESIGNED BY KENNY ERNST FROM AIR TRAILS MAY 1950 AEROMODELLER ANNUAL 1950 SPAN 75 1/2 CHORD 12- POWER FORSTER 29 --0______ ___ MAST HOUSING ESCAPEMENT RUBBER IS REMOVABLE B PLUGS IX-SEC COILESCAPEMENT -----~BATTERIES END GOOD BROS LBATT t IGN ESCAPEMENT AUSTIN GOOD BROSFILAMENTALL FUSE MEMBERS TIMERRADIOBATTERIESI/4SOHARD BALSA 03 /2 WHEELS IHJCISCALE IN INCHES 024BB1012 oped through grueling hours trial mostly error early experiments work much electronics genius modeler equipment ham bands well beyond abilities ordinary folks No commercially-available equip ment fully-assembled form marketed Little changed 1950 althougb Good brothers design several others now available commercially Rubber-driven escape ments gas tubes mechanical relays heavy dry cell batteries still accepted standards Receivers constantly out tune battery voltage dropped units retuned aid ammeter Most units used movable-iron-core slugs tuning Seem ingly impossible fly twice row sending helper off transmitter unless ground-based case model moved fiddled slugs trying get maximum rise drop meter voltage change opened closed relay passing current magnet escape ment thereby activating its pawl moving rudder Transistors research labs Bell Ni-Cd batteries extremely expensive rare semiconductor micro-chips ard development improved circuitry provided increased reliability sen sitivity advances pretty much limited available components interesting note first subminiature least light weight receivers product hearing aid manufacturer Relays adversely affected engine vibra tion point arcing gap changes loss spring tension Escapements notoriously critical number winds rubber striptoo much pawls would catch making some wild rapid rudder move ments other hand enough power available rubberbands linkages would bind right left making nastier things battery pack consisted h-e 30 45 volt bias battery set flashligh units receivers tube filament another energizing escapement batteries alone weighed modem flight packand rudder-only Receivers encased wrapped foam rather common practice suspend four corners cabin rubberbands hammock-like arrangement hoped isolate its relay Heres what made winning rudder-only Ignition-engine RC model late 1 940s 38 Model Aviation Shades 19501 Its Hoosier Hot Shotbut built just recently Dick Foxworthythe brother Gene Foxworthy used design win RC 1950 Nats shots Dick Foxworthys Hot Shot Doc redrew plans faded tattered original ana UICK bUilt borne modernization nas done tower tail used house escapement rubbernow hangeronto receiver antenna silk dope covering has replaced MonoKote rudder-only has changed digital proportional 3-channel rudder elevator throttle wing tail rubberband hold-downs have changed nylon bolts Fox 25 powers high dihedral wing slots show prominently photos engine vibration Control could call consisted full left rudder transmitter button pushed followed neutral full right rudder next time button hit needed remember previous command times continue left right turn blip past opposite rudder throw sort pushed-blipped-pushed own experience era successful 900 turn success left followed right turn extraordinary actually landing model original field source ecstasy wonder looked designers like Bill Winter getting consistent flights gurus Bill editor MAN time produced superb single-channel designs first successful flight Windy Joe design MAN using English ED RC system OK Cub 14 power Actually Windy Joe Old-Timer Free Flight concept radio added interrupt its flight path As matter fact looking old plans again see touch Old Square Sides poking through except time owned up designing rather blaming Mr [ Sprague pen name used Square Sides primitive opening editorials MAN back Bill related flying session pushbutton failed Rather call day just disconnected transmitter cord flew touching two wires together about primitive RC champ 1950 further explore far section hobby has come lets take Continued page 129 f C rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360 model mt mODEL IPORT TOTEM j Both lid sides open access anbron tray arganizer insides S 21 Old Time Gas 12 HL Gliders KIT11 Contest Rubber Send 50C for4 Satellite Kits 82/83 catalog3 Nastalgia Power Pacifiers &OF GOOD STUFF FAX Model Supply Iit~97 ance CA 90510 Ardens glow plug year two seasons successful flying completed Foxworthy drew up Hoosier Hot Shot forA ir Trails construction article run May 1950 Rather ironic fact design won National Championship few months later As understand photos used article second unit drawings reflect changes used third unit Nationals winner third model constructed just prior Dallas Nats 1950 since other two destroyed along Genes RC design equipment disastrous garage fire August 1949 As consequence new model also used Citizenship radio equipment de veloped contract Vernon McNabb IDEA electronics firm Foxworthy worked time Nats-winning model ONLY 17995 * New Meitel Craules nO05 000015 licIn repuire aid pog Fuselage crudlos ad1osi up ic 0 wide nh nod inioscope 51 Holds paper towels spray bottle gal nv subsequently sold McNabb used flying test bed years Hossier Indiana else Some quotes May 1950 Air Trails article further illuminate state art history average radio control model has spiral dive after another have seen first-class Free Flight job spiral dive bad launch gust wind dis turbed its normal flight path movement rudderbyradioisineffectthesame.. twin rudders chosen two reasons have practical method lowering CLA Center Lateral Area concept much prominence time RMcM secondly get movable portion far center line possible rage radio model builder has always cursed big trouble-maker trimmingwith power would get too much turn power off turn would too little Hot Shot turning radius difference power off would have measured inches st beginners Radio Control have mistaken belief takes power really needed Now hasnt changed particle 32 years Doc making control system essen tial fits connections free sloppy ve found advantage larger B batteries make up additional 4 6 ounces weight Note saxs additional 4 6 ounces Doc. 30E battery plane has made 125 flights last year pencells can generally holdout 10 15 flights course good idea check regularly discard go down below 12 volts about Test fly radio place would fooling yourself fly empty After model trimmed free flight radio equipment can used final piece advice seems surprisingly applicable three decades later few things remember about Radio Control 1 Dont overpower plane 2 Dont overlook radio manufacturers instruc tions 3 Test radio oftenpower power off 4 Dont forget turn switches before launching Time marches Doc deeply indebted Don Jenkins Indianapolis research Hoosier Hot Shot remembrances former boss Gene Foxworthy Don chased down originalbut badly fadeddrawings wrote numerous letters Dick Gene Foxworthy generally got us involved story distinct pleasure resurrecting drawings workable form sending copies back Indianapolis Dick Foxworthy constructed two new models using con temporary engines RC gear retaining old escapement rubber tail post authenticity shown photos other delivered Gene now living West Virginia recuperating bypass surgery last report excited Gene hard work number RC models after nearly 30 years inactivity Let us hope recalls four rules follows letter Outta room butnext time around well bring some recollections Hot Shot era now need alert SAM types Louisiana Mississippi east Texas adjoining areas Hal Cullins 3483 Coolidge St Baker LA 70714 trying contact transplanted West Coaster looking others interested Old-Timers 1 30 Model Aviation DC Mode Spo compact lightiseight 21 n tO n 51t Special coated surface toni wate resistant Carries star ter 12 u buttery power panel transmitter & has honks coiling glow plug & starter cords un cailen rn, en CI * All Alominam folding logo / ModNa See Dealer firstl 14573 Grover Itreat DC Product Inc Omaha flebraika 68144 SCALE DOCUIv1ENTATIDN SCALt DRAWINGS as,zj2 MO Ott PLANS 1982 AIRPLANE CATALOGS $200 lJ REPLA-TECH ~INTE9NATIONAL IMlE KENZIE H5NY N/IDA OREGON S7488 B Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Triplanes5 awards Scale 2 gine 60 Send 75 latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr Williamsville NY 14221 716-632-4838 FARMAN 451 MOSOUITO True GENTLEMAN S PLANE Son easy building An GelighIlul gentle vIsion ISO air No sting MosqulO5l PLANS 2 SIZES Falt size highly detelled GENTLE GIANT 1108 ci OUAORA82400 GENTLE LADY 155110 40 504-cyCle 01100SI 700 GIber supeih giunl scale clansFull see 9 FOKKER OVttl 2-4 in92500 9 PT-Oh OaedrenKinritnS2800 9 PIPER L-4 Militety J-3 Cab Onedre$2000 Send 0555 ohCnk Plans seol rolled UPS POSTPAID moneg order lornigo orders add 40% al mail TAYLORCRAFT Send large sase brochules LEE TAYLORall Taylototalt Elans otteringo 206 WIllow AsenneComing soon8 Otumman Tigeil Rneeoitle CA 959785 yarga Kacsina SILK $/Y12 DISCOUNTS ON $495/YD SO YD ROLLSa RedYeI low Royal Blue Fine Otialily Model Building Aaiy Length Max 50 Yd SILK COVERS BEST LIGHT STRONG- ECONOMICAL SHIPPINGi ADO 50 FOREIGN 150/ORDER NX RES Add 4% BROWNSELL FLAG B DECAL CO 121 LAUREL ROAD NEW CITY NY 914-634-850010956 join possibly forming SAM chapteror least get together some fun-fly activities phone 504 774-9647 Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Aerobatics/Van Putte Continued page 37 misplaced Regardless heres slightly edited version Genes letter As B-47 operator stationed Topeka KS circa 1960 member RC club read about Knox gelatin routine literature day tried wing tail Stormer coat water/gelatin mixture sealed silk well three coats butyrate dope gave gorgeous translucent finish took club meeting basked boys admiration gave lecture done -At next club meeting chap high state dudgeon displayed silk-covered wing pitiful behold looked finished stucco S@# said pointing Look what caused to wing Post mortem revealed mixed gelatin dope Egad perfect finishing method balsa-sheeted surfaces especially compound curves brush two three coats butyrate dope sanding fuzz off time Drape -oz glass cloth over surface piece whole fuselage Brush dope through glass cloth pushing out wrinkles folds ahead brush making ragged overlapped seam bottom Brush two three coats talcum/dope mixture SigSuper fill give good sanding Shoot color gives durable good lightweight finish old flattop Stormer Vintage 1960-1962 younger readers R VP still best hot dogging aircraft mods original design except bolt-on wing landing gear plus fixed horizontal stab Since Stall Turn took half months column Three Axial Rolls took similar amount last months column plan skip month before resuming descriptions perform Novice/Sportsman class ma neuvers Maybe other month appropriate mix Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Giant Scale/Beckman Continued page 41 noted power output antenna extended first off bad turned sure enough bad power output 40db down other words putting Out less 1 / 100th power other transmitter No wonder didnt have good range Now find out Just getting ready start tearing transmitter occurred should stop Easter egg hunting use head problem RF condition always finally gotten pinned down transmitter already knew changing RF modules transmitter didnt make difference possible very probable both modules same defect other hand likely fault something use no matter module used batteries good shape power being delivered RF module thing left antenna antennas dont go bad After its just length metal Well its easy enough find out swapped antennas two transmitters just like song says Everything bad good again Hindsight being perfect now obvious Although transmitter fairly new Ace Silver Seven built last year installed UHF connector antenna used antenna already five six years old Just recently noticed bit magazine columns about collapsible anten nas can get dirty deteriorate Although time said myself Yeah can happen never happened meso didnt really register Now inconsistent symptoms explained fairly good range antenna down poor up good range sometimes extend collapse antenna thing changes heat-sensitive transistor legitimate failure served mask additional troubles new antenna put transmitter old disassembled inspected amazed amount dirty oily crud sliding contacts make connections between telescoping sections antenna now carry small bottle alcohol toolbox Tam trying develop habit always wiping antenna clean before ever collapsing Saturday everything checked out perfectly radio solid Magnum II purred like kitten bird handled better ground expected highspeed taxi run down runway indicated wsa ready fly After months stumbling around first flight almost anti-climactic Tomahawk flew flew well As expected Continued page 134 January 1983 131 FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve its easy starting reliability tur Hot tine 5th t4t-ltSt FOX MFG Ca 5305 TOWSON AVE FORT SMITH ARK 72901
Edition: Model Aviation - 1983/01
Page Numbers: 38, 39, 129, 130, 131
Radio Control OLD- TIMER Dee B Mathews BACK Bad Old Days Lets take time frame jump month pre-war era immediate post-war take look RC flying 1950 visiting younger modelers fre quently stunned presumption RC models equipment have always presently Most have vague appreciation incredible changes tech nology hobby has undergone last three decades crude homemade single-channel radios DeSoto Lanzo Good brothers other pioneers 1930s 1940s devel j I PORTANT HELP CONTROL AIR FLOW OVER PANELS OURING TURNSREMOVABLE COWL FOR ACCESS TO ENGINE IGNITION BATTERIES 66JLZZ~SLOT SECTION AT X TYPICAL SECTION AT V T GENE FOXWORTHYS HOOSIER HOTS HOT 1950 NATIONALS R/C WINNER DESIGNED BY KENNY ERNST FROM AIR TRAILS MAY 1950 AEROMODELLER ANNUAL 1950 SPAN 75 1/2 CHORD 12- POWER FORSTER 29 --0______ ___ MAST HOUSING ESCAPEMENT RUBBER IS REMOVABLE B PLUGS IX-SEC COILESCAPEMENT -----~BATTERIES END GOOD BROS LBATT t IGN ESCAPEMENT AUSTIN GOOD BROSFILAMENTALL FUSE MEMBERS TIMERRADIOBATTERIESI/4SOHARD BALSA 03 /2 WHEELS IHJCISCALE IN INCHES 024BB1012 oped through grueling hours trial mostly error early experiments work much electronics genius modeler equipment ham bands well beyond abilities ordinary folks No commercially-available equip ment fully-assembled form marketed Little changed 1950 althougb Good brothers design several others now available commercially Rubber-driven escape ments gas tubes mechanical relays heavy dry cell batteries still accepted standards Receivers constantly out tune battery voltage dropped units retuned aid ammeter Most units used movable-iron-core slugs tuning Seem ingly impossible fly twice row sending helper off transmitter unless ground-based case model moved fiddled slugs trying get maximum rise drop meter voltage change opened closed relay passing current magnet escape ment thereby activating its pawl moving rudder Transistors research labs Bell Ni-Cd batteries extremely expensive rare semiconductor micro-chips ard development improved circuitry provided increased reliability sen sitivity advances pretty much limited available components interesting note first subminiature least light weight receivers product hearing aid manufacturer Relays adversely affected engine vibra tion point arcing gap changes loss spring tension Escapements notoriously critical number winds rubber striptoo much pawls would catch making some wild rapid rudder move ments other hand enough power available rubberbands linkages would bind right left making nastier things battery pack consisted h-e 30 45 volt bias battery set flashligh units receivers tube filament another energizing escapement batteries alone weighed modem flight packand rudder-only Receivers encased wrapped foam rather common practice suspend four corners cabin rubberbands hammock-like arrangement hoped isolate its relay Heres what made winning rudder-only Ignition-engine RC model late 1 940s 38 Model Aviation Shades 19501 Its Hoosier Hot Shotbut built just recently Dick Foxworthythe brother Gene Foxworthy used design win RC 1950 Nats shots Dick Foxworthys Hot Shot Doc redrew plans faded tattered original ana UICK bUilt borne modernization nas done tower tail used house escapement rubbernow hangeronto receiver antenna silk dope covering has replaced MonoKote rudder-only has changed digital proportional 3-channel rudder elevator throttle wing tail rubberband hold-downs have changed nylon bolts Fox 25 powers high dihedral wing slots show prominently photos engine vibration Control could call consisted full left rudder transmitter button pushed followed neutral full right rudder next time button hit needed remember previous command times continue left right turn blip past opposite rudder throw sort pushed-blipped-pushed own experience era successful 900 turn success left followed right turn extraordinary actually landing model original field source ecstasy wonder looked designers like Bill Winter getting consistent flights gurus Bill editor MAN time produced superb single-channel designs first successful flight Windy Joe design MAN using English ED RC system OK Cub 14 power Actually Windy Joe Old-Timer Free Flight concept radio added interrupt its flight path As matter fact looking old plans again see touch Old Square Sides poking through except time owned up designing rather blaming Mr [ Sprague pen name used Square Sides primitive opening editorials MAN back Bill related flying session pushbutton failed Rather call day just disconnected transmitter cord flew touching two wires together about primitive RC champ 1950 further explore far section hobby has come lets take Continued page 129 f C rapid rotation side accompanied dragging wing tip likely occur relatively slow speeds tail-wheel skid firm contact runway especially pavement follows wide-tread landing gear would wise choice long tail moment maximum distance between main wheels tail-skid also desirable Very few old planes tail skid steerable steerable tail wheels came along paved runways ex amples planes being retrofitted tail wheels place non-steerable skids WW model skid can difficult taxi grass impossible pavement slightest breeze grass deftly coordinated eleva tor rudder throttle tail-skid model can taxied slowly Apply full rudder followed partially opened throttle bit downelevator prop wash can lift skid out grass turn begins develop quickly neutralize elevator close throttle prevent over-rotation Repeat often needed desired heading skill can done sweep Under light wind conditions also possible taxi pavement using technique control surface travel considerably less grass taxi straight line use throttle up-elevator keep tail skid firmly dragging through grass Fast taxiing skid invites disaster After first taxi experience tail skid modeler will appreciate need nose-skid extending forward beneath prop some WW 1 trainers such Avro 504K tail-skid model ground-looping tendencies takeoff best accomplished stand ing directly behind model rudder corrections can quickly determined Once turn begins develop takes very quick application oppositesrudder stop incipient ground loop Too much may want go around other direction Nor mally use small amount up-elevator keep skid grass speed builds point sufficient airflow over tail surfaces provides directional control Elevator neutralized tail comes up point control critical because exact amount rudder movement needed easily deter mined As speed increases rudder travel required lesser amounts Everything happens rapid sequence fromthe time throttle opened until liftoff Wheel landings tail high skid off ground give best directional control because rudder effective tail will tend drop quickly because planes center gravity behind wheels bit down-elevator will kill off lift generated sudden increase angle attack tail lowers touchdown critical point tail drops directional stability lost point may need quickjab rudder throttle hold straight heading classic threepoint landing usually means airplane fully stalled time runway contact direc tional stability its minimum moderately effective control rudder throt tIe added required Too much throttle landing becomes touch-and-go model becomes airbome again Differential wheel brakes full-size planes would great help werent fact models act react much quickly Tail-skid-type models larger sizes easily controlled ground Steerable-tail-wheel airplanes taxied same ease nose-wheel types Once tail wheel lifts off runway no different tail-skid type need quick application die400I die575 1 dia400Si die750 dl500fdla.850 dl500Si. dla950 rudder required stop ground loops directionally-unstable model Fortunatelyfor us time tail wheels came use narrowtread landing gears outdated main wheels further rearward modern low-wing airplane having steerable tail wheel wide-spread mains will no tendency ground loop Takeoff landing should straight line little no use rudder As mentioned earlier typical ground loop occurs relatively slow speed model moves straight line low speed turns off heading speed increases look problem wheel friction have heard plastic wheel hubs squeal loudly lack axle lubrication takeoff landing Frictional heat can melt plastic wheel hubs cause binding Parking model hot runway can soften tires causing bulge touches landing gear strut interior wheel pants slow speed braking impulses noticed near takeoff speed drag sufficient turn model off heading have also problem tires softening hot weather high rotational speed before lift-off causga tires expand diameter make contact struts wheel pants could result pulling side unexplained nose-overs Its particu larly problem takeoff speed great due combination heat high altitude Learning tail-dragger ground-handling tech niques have actually helped flying trike geared models Slower landings main wheels touching down first less abusive model Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Con fin ued page 39 look National Contest Radio Control winner 1950 Gene Foxworthy several brothers operated automobile engine rebuilding service Ford Indianapolis IN WW II Air Corps veteran flown nearly type military aircraft active successful Free Flighter prewar years 1946 Gene become deeply involved developing radio-controlled models well designing fabricating own equipment originally test flown Free Flight design Kenny Emsss design featured wing slots similar Berkeley Buccaneer Specials theory wing slots prevented tip stalls subsequent spins letter-box slots cured loop ing Ernsts Free Flights led him engine test aluminum hold size lA to 80 4 oz tank Completely strap anc rg screws Inciuded advise Foxworthy Hot Shot would loop Gene course immediately proceeded prove him wrong As single-channel flier can attest possible loop rudder-only As Foxworthy developed refined RC gear help Frank Volrath Sal Taibis brother-in-law way need design better suited RC became apparent Using lessons learned Kenny Ernsts models Hoosier Hot Shot RC designed built 1948 model placed second Nats 1948 fourth 1949 model originally powered Dennymite engine prone over heating Volrath developed bolt-on heat sink rarity days sure Dennymite eventually replaced Forster 29 swinging 11 x 4 Top Flite prop course spark ignition used preceded Ray January 1983 129 kit contains flee metal Instrument cases machIned turned plated Gtasaes dial beck precIsIon Cut lIt casee Also Included salectlon twenty typIcal Inatrument dIal tacos InstructIons KIT StZES Only 1495 Get install don t take off t Ken Willard RCM SERVO GARD 5ERVO GARD monitors airborne flight hatters pack voitage ssell radio signal received rraesmtter receiver malfunction detecied purl system SERVO GARD reduces throttle autornanically ample timebefore batters failure safely land model SPECIFICATIONS Size unit installed KPS- 14 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse unit shipped positive pulse systems negative pulse available upon request SERVO GARO comes complete pro-wired pigtails servo connectors choice installed fspecifs connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUiRIES INVITED Price $3795 PoaspaidI ISpecify connector type positive negative pulse orderingf ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAMi LIMA OHIO RF Enterprises 706 N Main St Arlington OH 45814 479 365-5360 model mt mODEL IPORT TOTEM j Both lid sides open access anbron tray arganizer insides S 21 Old Time Gas 12 HL Gliders KIT11 Contest Rubber Send 50C for4 Satellite Kits 82/83 catalog3 Nastalgia Power Pacifiers &OF GOOD STUFF FAX Model Supply Iit~97 ance CA 90510 Ardens glow plug year two seasons successful flying completed Foxworthy drew up Hoosier Hot Shot forA ir Trails construction article run May 1950 Rather ironic fact design won National Championship few months later As understand photos used article second unit drawings reflect changes used third unit Nationals winner third model constructed just prior Dallas Nats 1950 since other two destroyed along Genes RC design equipment disastrous garage fire August 1949 As consequence new model also used Citizenship radio equipment de veloped contract Vernon McNabb IDEA electronics firm Foxworthy worked time Nats-winning model ONLY 17995 * New Meitel Craules nO05 000015 licIn repuire aid pog Fuselage crudlos ad1osi up ic 0 wide nh nod inioscope 51 Holds paper towels spray bottle gal nv subsequently sold McNabb used flying test bed years Hossier Indiana else Some quotes May 1950 Air Trails article further illuminate state art history average radio control model has spiral dive after another have seen first-class Free Flight job spiral dive bad launch gust wind dis turbed its normal flight path movement rudderbyradioisineffectthesame.. twin rudders chosen two reasons have practical method lowering CLA Center Lateral Area concept much prominence time RMcM secondly get movable portion far center line possible rage radio model builder has always cursed big trouble-maker trimmingwith power would get too much turn power off turn would too little Hot Shot turning radius difference power off would have measured inches st beginners Radio Control have mistaken belief takes power really needed Now hasnt changed particle 32 years Doc making control system essen tial fits connections free sloppy ve found advantage larger B batteries make up additional 4 6 ounces weight Note saxs additional 4 6 ounces Doc. 30E battery plane has made 125 flights last year pencells can generally holdout 10 15 flights course good idea check regularly discard go down below 12 volts about Test fly radio place would fooling yourself fly empty After model trimmed free flight radio equipment can used final piece advice seems surprisingly applicable three decades later few things remember about Radio Control 1 Dont overpower plane 2 Dont overlook radio manufacturers instruc tions 3 Test radio oftenpower power off 4 Dont forget turn switches before launching Time marches Doc deeply indebted Don Jenkins Indianapolis research Hoosier Hot Shot remembrances former boss Gene Foxworthy Don chased down originalbut badly fadeddrawings wrote numerous letters Dick Gene Foxworthy generally got us involved story distinct pleasure resurrecting drawings workable form sending copies back Indianapolis Dick Foxworthy constructed two new models using con temporary engines RC gear retaining old escapement rubber tail post authenticity shown photos other delivered Gene now living West Virginia recuperating bypass surgery last report excited Gene hard work number RC models after nearly 30 years inactivity Let us hope recalls four rules follows letter Outta room butnext time around well bring some recollections Hot Shot era now need alert SAM types Louisiana Mississippi east Texas adjoining areas Hal Cullins 3483 Coolidge St Baker LA 70714 trying contact transplanted West Coaster looking others interested Old-Timers 1 30 Model Aviation DC Mode Spo compact lightiseight 21 n tO n 51t Special coated surface toni wate resistant Carries star ter 12 u buttery power panel transmitter & has honks coiling glow plug & starter cords un cailen rn, en CI * All Alominam folding logo / ModNa See Dealer firstl 14573 Grover Itreat DC Product Inc Omaha flebraika 68144 SCALE DOCUIv1ENTATIDN SCALt DRAWINGS as,zj2 MO Ott PLANS 1982 AIRPLANE CATALOGS $200 lJ REPLA-TECH ~INTE9NATIONAL IMlE KENZIE H5NY N/IDA OREGON S7488 B Fokker Triplane Flight TestedContest Proven Rhinebeck 82 Results CamelFirst Triplanes5 awards Scale 2 gine 60 Send 75 latest price list & literature VK MODEL AIRCRAFT CO 4350 Arondale Dr Williamsville NY 14221 716-632-4838 FARMAN 451 MOSOUITO True GENTLEMAN S PLANE Son easy building An GelighIlul gentle vIsion ISO air No sting MosqulO5l PLANS 2 SIZES Falt size highly detelled GENTLE GIANT 1108 ci OUAORA82400 GENTLE LADY 155110 40 504-cyCle 01100SI 700 GIber supeih giunl scale clansFull see 9 FOKKER OVttl 2-4 in92500 9 PT-Oh OaedrenKinritnS2800 9 PIPER L-4 Militety J-3 Cab Onedre$2000 Send 0555 ohCnk Plans seol rolled UPS POSTPAID moneg order lornigo orders add 40% al mail TAYLORCRAFT Send large sase brochules LEE TAYLORall Taylototalt Elans otteringo 206 WIllow AsenneComing soon8 Otumman Tigeil Rneeoitle CA 959785 yarga Kacsina SILK $/Y12 DISCOUNTS ON $495/YD SO YD ROLLSa RedYeI low Royal Blue Fine Otialily Model Building Aaiy Length Max 50 Yd SILK COVERS BEST LIGHT STRONG- ECONOMICAL SHIPPINGi ADO 50 FOREIGN 150/ORDER NX RES Add 4% BROWNSELL FLAG B DECAL CO 121 LAUREL ROAD NEW CITY NY 914-634-850010956 join possibly forming SAM chapteror least get together some fun-fly activities phone 504 774-9647 Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Aerobatics/Van Putte Continued page 37 misplaced Regardless heres slightly edited version Genes letter As B-47 operator stationed Topeka KS circa 1960 member RC club read about Knox gelatin routine literature day tried wing tail Stormer coat water/gelatin mixture sealed silk well three coats butyrate dope gave gorgeous translucent finish took club meeting basked boys admiration gave lecture done -At next club meeting chap high state dudgeon displayed silk-covered wing pitiful behold looked finished stucco S@# said pointing Look what caused to wing Post mortem revealed mixed gelatin dope Egad perfect finishing method balsa-sheeted surfaces especially compound curves brush two three coats butyrate dope sanding fuzz off time Drape -oz glass cloth over surface piece whole fuselage Brush dope through glass cloth pushing out wrinkles folds ahead brush making ragged overlapped seam bottom Brush two three coats talcum/dope mixture SigSuper fill give good sanding Shoot color gives durable good lightweight finish old flattop Stormer Vintage 1960-1962 younger readers R VP still best hot dogging aircraft mods original design except bolt-on wing landing gear plus fixed horizontal stab Since Stall Turn took half months column Three Axial Rolls took similar amount last months column plan skip month before resuming descriptions perform Novice/Sportsman class ma neuvers Maybe other month appropriate mix Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Giant Scale/Beckman Continued page 41 noted power output antenna extended first off bad turned sure enough bad power output 40db down other words putting Out less 1 / 100th power other transmitter No wonder didnt have good range Now find out Just getting ready start tearing transmitter occurred should stop Easter egg hunting use head problem RF condition always finally gotten pinned down transmitter already knew changing RF modules transmitter didnt make difference possible very probable both modules same defect other hand likely fault something use no matter module used batteries good shape power being delivered RF module thing left antenna antennas dont go bad After its just length metal Well its easy enough find out swapped antennas two transmitters just like song says Everything bad good again Hindsight being perfect now obvious Although transmitter fairly new Ace Silver Seven built last year installed UHF connector antenna used antenna already five six years old Just recently noticed bit magazine columns about collapsible anten nas can get dirty deteriorate Although time said myself Yeah can happen never happened meso didnt really register Now inconsistent symptoms explained fairly good range antenna down poor up good range sometimes extend collapse antenna thing changes heat-sensitive transistor legitimate failure served mask additional troubles new antenna put transmitter old disassembled inspected amazed amount dirty oily crud sliding contacts make connections between telescoping sections antenna now carry small bottle alcohol toolbox Tam trying develop habit always wiping antenna clean before ever collapsing Saturday everything checked out perfectly radio solid Magnum II purred like kitten bird handled better ground expected highspeed taxi run down runway indicated wsa ready fly After months stumbling around first flight almost anti-climactic Tomahawk flew flew well As expected Continued page 134 January 1983 131 FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve its easy starting reliability tur Hot tine 5th t4t-ltSt FOX MFG Ca 5305 TOWSON AVE FORT SMITH ARK 72901