1 jtkerh JOURNEY center earth years can remember ingenious modelers have toying camera planes long before modern miniature aircraft people used kites support cameras high air novelty first aerial photography using RCjobs has demonstrated scientific worth public stunning variety ways can make money Aerial model photography richly rewarding anyone combines twin hobbies photography RC flying especially meaningful business-like objectives coordinated few have put together Bob Munn Orem UT As read probably will off archaeological digs Greece North Africa might Out capturing film some local ruin spanking new shopping center What really drives lenswizards like Hux Peter Miller Bob Munn gap perspectives between tall ladders low-flying normal aircraft interesting photographers Munn tells us Hawk eye RC miniature aircraft carrying sophis ticated Nikon 35mm still-camera equipment can capture images would otherwise go unappreciated Operating alti tudes low 20 feet high 1000 making during single flight both vertical areasearch oblique exposures varying altitudes ranges Hawkeye can provide fresh perspec tives often reveal interesting relationships between subject surroundings well new aspects subject itself Hawkeye has wide variety applications Bob continues Business industrial location publicity photographs different angle real estate survey sales programs advertising materials variety forms satisfaction personal objectives among system useful nature photography well construction archaeology periodic photography kind produces useful interesting documentation progress well demonstrating relationship site sur roundings Bobs business aircraft gets airborne less 75 feet requires 150 feet smooth clear space landing due sheer inertia 20-lb aircraft moving 30 mph operates off average rural dirt road Ideal large paved parking lot smooth grass playing field free obstructions opposite ends Fuel lasts 20 minutes camera operates speeds up four exposures second typical flight produces 30-36 B&W color negativesof 60-70% will useful Now back Bob Top quality images suitable full-page Top Heinz Koerner electric twin Par tenaviaright Scale-like Quad Middle 55-in 73-oz Partenavia super flierit really moves says Heinz Carries 12 12 Ah cells 495 sq wing area Above Quad fourAstro02sflies bycan loopfrom level flight Extended cruise achieved switching off two motors text magazine presentation produced Detail de pends large part lens-to-object distance high-altitude vertical area photo covering over 1000 linear feet ground will have detail taken lower altitude covering much smaller area Because moving platform cannot use slow super-finegrain films material ASA rating 100 will reproduce excellent results under normal lighting conditions using B&W negative material working remote locations film can processed spot negatives can assessed additional flights made necessary obtain desired results What for-hire missions Objectives relate primarily production images particular interest high quality thorough discussion kind images desired specific flight essential survey subject its relationship light sources 16 Model Aviation 9 Bill Wi ruiuing exquisite ano greatimying ojinsun SR-6 top Bob Smurthwaite G-S Products WW II veteran also flew 600 combat hours Chennault lower pic hes posed pile Engelman spruce Winter using /4-scale Vagabond Text has details fine wood Bob has spent life around lumbering sawmills Hes willing supply big-plane builders specia en Shipps Up,..- rubber-powered twin 23-in span didnt go scale 3-in props too small So lower pic two nosesscale left single wide nose grafted ROG wing tail removed subject individual negotiations project packages costs based number type acceptable images produced necessarily number flights required produce Authors Note legitimate firms writing company letterheads Munn has typical portfolio available instruction Ad dress him care Model Aviation nearby area cost project can range considerably since variables involved Bob ex plains As starting point flight producing 30-36 exposures type film conducted under average conditions would cost about hundred dollars would include visit survey discussion operational flight second visit processing delivery slide negative material B&W contact After finish -scale Piper Vagabond sheet furnished other prints services etc big 1981/82 winter project will electric 4involve additional costs engined Constellation confess long un purchaser obtains one-time use rights requited love affair Connie having materials produced otherwise remain witnessed quiet magic Srulls 6-ft Spitfire property operator Exclusive rights published MA very much lightened over prototype might say passion Connie rekindled am regular correspondence Bob Boucher Mitch Polling sometimes calls Bob Kopski innovative genius Heinz Koerner Bob Boucher example has provided laborious notes combination size motor makes belt-drive direct along loadings plane sizes performance batteries etc Some combinations job Superman Convairsome spectacular beyond dreams might go four direct-drive 075s about 7-ft span excites please wait because youll need see essential frame techJune1981 17 Above Bob Munn wing hand shows off Hawkeye camera plane carries Nikon sophisticated paying aerial photog raphy assignments pic taken Utah Valley Aeromodelers field Provo UT right two shots Bobs handiwork upper picture taken straight down about 150-ft altitude what remains early American building near Goshen UT site explored Brigham Young University lower view main taxiway Provo Air port very busy lightplane facilityaltitude Hawkeye picture also about 150 feet niquesleast asked him summary questions last years Electric Fly year Sept 20and answers hit jackpot Heinz rain date Sept 27 Bob Kopski 25 West End Comment Electric good gliders Dr Landsdale PA 19446 Koerner found visit-Answer aerobatics twin 075 ing modelers comments interesting say the22-oz wing loading proved otherwise Comment flying time short zoom across sky 2 minutes wait until battery charged again Answer Kopski built fast acrobatic plane semi-symmetrical airfoil Astro 108 x6 prop 1212 Ahcells Running time 6-7 mm depending aero batics have 02-powered glider four 12 Ah cells 6 minutes running time Gross 24 oz area 360 squares three Ace Midget servos Twenty-minute flights back yard com mon depending lift fly day 20mm waits use three battery packs planes Packs easy remove through hatch canopy charge use 115 Ah marine battery powers 28-lb-thrust trolling motor another good electric combination also have two Astro Rapid Chargers way field charge two batteries field install battery charging third exchange charged battery discharged Rotating batteries permits steady all-day flying also rapid-charge Rx Tx batteries Author Have read directions advising against charging car battery engine running suppose Heinz doesnt way Comment tried electric after 10 flights battery failed bought another went under after eight flights Too expensive. Answer Nicad battery takes less charge cold Warms up first flight takes good charge second time During second flight battery warms up After several charge/discharge cycles battery hot can damaged Provide good cooling Venting holes Astro cases enough such heavy use Open up consider ably battery feels too hot cool small fan before during charging Dont throw damaged pack away usually bad cell Measure voltage across cell help 5-ohm load resistor Bad cell drops faster good Replace bad cell dont short out battery because can start fire burn hands Author Spitfire have pack supported tabs very well exposed cooling does get hot touch warm. content wait recharge because have other models fly Comment will take off grass field Answer Small models will Author True gas too Spitfire takes off beautiful realism grass Most light wingloading jobs geared motors geared 15 Spit take off easily No problem Twin 15 either 25 need light wing loading 10 x 4 prop Author Spitfire has 14-oz loading guys call gross high tell us will perform brilliantly geared 25 Heinz has flown 24-oz loading Comment Have electric left home Im good have glider car never flew contest Answer fun-fly contest present few pix Heinz remarkable planes miscellaneous comments Quad experimental started twin 05 now four 02s Scale Flight system wired four 12 Ah cells power two inboard motors four 12 Ah cells two outboards Maintains level flight turns two motors four will loop Out straight flight running time 4 mm Cooling provided through hole windshield fuselage bottom Author Vent position type important vent Spit through open cockpit canopy Motor cow ling made toilet paper rolls Span 61 flat bottom 460 squares gross 52 oz 4-channel Partenavia has 55-in span 495 squares gross 73 oz Two cellstotal 12 12 Ah cells Really moves Plans better looking Continued page 108 18 Model Aviation joehe6eqsute.and exfe#zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 KIORITZ Deep Fins Optimum Cooling 21/4 Flywheel Small Magneto 1 5/am Six Bo Aluminum Hub Endorsed Don Godfrey Phone 607 722-1765 Pre-Drilled Props Available Ask About Custom Built KIORITZ Engines Carb Needles &Throttle Accessible Running Points Sealed Rear Housing $189 Pre-Paid Orders Pay Shipping Dealer Inquiries Welcome Year Limited Warranty Safety Preston Continued page 13 could have avoided cool refreshing prior takeoff FAA has strict rules about drinking flying full-scale ones shouldnt close months column would like say pleased learn AMA Executive Council approved formation Safety Committee its last meeting January 31 have asked member committee have accepted Others represent ing different facets hobby have also asked until hear has accepted will mention names Most mail subject Safety Committee has come readers very much favor idea BALSA SHEETS 4x48xr/1649 4x48x3A3252 4x48x%62 4x48x3/is74 4x48x90 4x48x1/2108 6x48x/r74 6x48x3As278 6x48x/s93 6x48x3/is111 6x48x135 6x48x162 PLYWOOD 6x48x1/as125 6x48x/16136 6x48x3/2175 6x48x185 6x48x3/is240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 ENGINES BY GIBBS HOBBY & RESEARCH Original Developer Factory Trained Authorized Master Service Dealer SPECIFICATIONS 242 Cu 397CC 32 HP 8000 rpm Weight 61/2 lb Ball Bearings Crank Caged Rollers Rod Piston Pin Walbro Pump Garb 3 Ring Piston GIBBS HOBBY & RESEARCH 6195 HilIfield StNW N CANTON OHIO 44720 Phone216499-8854 After6 OOPMJ Accept Visa & Master Card Only letter voiced objectionon grounds would generate unenforceable regulations Such regulations could cause rise price certain hobby products no increase safety same letter suggested A committee sole purpose education might useful effective agree goals Safety Committee should educate modelers following safe practices dont feel should sole aim committee Show Team members generally upset what believed hasty action part Executive Council its overall ban use pyrotechnics model airshows ban has now replaced operating guidelines use pyrotechnics airshows believe issues such type things Safety Committee should handle As happens Air Show team member has asked sit committee Another issue believe should referred Safety Committee concerns new rules FAI Pylon Racing class F3D bulk rules published Bill Hagers column April issue MA However understand rules also stipulate on-course officials competitors must wear crash helmet chin strap rules also state helmet must able wit hstand impact ofa flying Pylon model No suggesting Safety Committee should conduct tests live volunteers determine helments currently market will meet requirement What suggest committee come up workable interpretation require ment number different safety standards helmets already existence suggest committee should determine would result helmets come closest fulfilling spirit FAI require ment Whether course officials competitors FAI Pylon races held US must wear approved helmet another issue would also need resolution Any comments Till next month have safe John Preston c/o ModelAviation 815 Fifieenth St N W Washington DC 20005 Fun/Winter Continued page 18 wing Quad Twin 15 grass field takeoffs Heinz tells us instead dropping resistor Spit cruise power switches off two four motors Way go Will Connie No power loss added drain extended cruise will possible Hoping 10 minutes Lots guysbut thats month September 5-7 last European Champion ships F3E Electro Flight held Amay Belgium 66 entrants flew official FAI rules become effective January 1 1983 AMA rule book may have refer book follow discus sion However European Championships Class F3B Stand-Off Scale also flown rules AMA bookapparently pro visional experimental rules F3B cable launch replaced 60sec motor run following tasks completed within 15 minutes speed dura tion precision landing Also provisional pylon race four models around three pylons two 180-meter legs 40-meter base leg race consisting 10 laps Youll have forgive rambling because post-contest booklet fragmented four languages moment have AMA copy illustration pattem type event alas well have leave later Since official rules F3E AMA rule book include flight diagram weve redrawn contest book gives some indication state-of-the-art Europe some rather wild things have going trickle information reaching country Bear mind FAI rules permit up 2325 sq area 11-lb weight permissible loading between 393 2459 oz/sq ft Some resultant flying power houses mind boggling carefully read caption under diagram youll find impli cations electric give task trythere could World Champs some near-future day 108 Model Aviation THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly Slow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9%x 12 high $34 9 5 dealer postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112 Windsor CA 95492 new problems get sucked improvements lead on Dave Hendersons motivations mixed also wanted something different doesnt surprise us Golly whip out same thing dozens Combat can chain bench Daves just-for-the-fun-of-it thing sparked idea could get motor weight back far enough turn ratio would increase surprisingly ended up 5 oz nose weight flies shows promise competitive Fast Any advantage may underscores may three times have lost another problem spraybar directly over lower wing So forestall possible burning added section aluminum under spraybar next Bi-Bat will have nose extended seems scotch original brainstorm knows what strange craft might drawing shows one-inch nose extension plywood center section will reduced weight has mixed emotions mentions flies like dog compared topranking ships yet says does have good perform ance feels weight disadvantage can overcome Dave thinks Combat brethren would interested cut-and-try experi mentsso chap wonderful RC Stinson floats Bob Smurthwaite gentleman simply must meet CL fliers know 3-line control system best Carrier kits dont see system around becasue became disgusted jobbers zero big money makersthat RC couldnt beat would join Stinson equally lovely Howard sometimes see advertised first result have career-man son armament deep Stinson putting together Silver 7 kit itthe straight-wing Stinson RCM Scale Kit Year SR-6 Reliant flies extremely well 40 Bobs 2000-foot elevation requires full power water takeoffs floats cruises half-throttle Smooth stable flies better Bob trainer hes meddled wheels 10 x 6 wide Zinger has reached 1000 feet 30 sec has measured have 2000 ft/min climb rate using 10% nitro Weight is6 lb under6ft span Like author Bob considers himself per petual novice test pilot built sample has 8000 hours 3000 aerobatics hands model does big ship could dolike inverted floats spins snaps added wing flaps SR-6 Bob built side-slips short-field landings virtually no roll-out Going over kit son Mike impressed structural design quality cutting balsa ply parts Out context Bob flew 283 missions 10th Air Force China Continued page 114 110 Model Aviation K61 R/C uffler$13995 Including wruw .r call mar lnaomation RJL INOUSTRIESePO BOX 5654PASADENA CA 91107 chilly day guys critiqued test Stinson Voyager Realistic Models Theyre Bob Beckman Bill Winter Clarence ErIIcnIne latter engineering-type test pilot aerobatics flier gets away Ace Service Center Despite trio coming up some points forthe designer Les Putnam check its greatairplane mad building spree Leswhipped outtwo planes within month suit testy trios nit picking Right Les Putnam two models frame stage built trios request colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507
Edition: Model Aviation - 1981/06
Page Numbers: 16, 17, 18, 108, 110, 114
1 jtkerh JOURNEY center earth years can remember ingenious modelers have toying camera planes long before modern miniature aircraft people used kites support cameras high air novelty first aerial photography using RCjobs has demonstrated scientific worth public stunning variety ways can make money Aerial model photography richly rewarding anyone combines twin hobbies photography RC flying especially meaningful business-like objectives coordinated few have put together Bob Munn Orem UT As read probably will off archaeological digs Greece North Africa might Out capturing film some local ruin spanking new shopping center What really drives lenswizards like Hux Peter Miller Bob Munn gap perspectives between tall ladders low-flying normal aircraft interesting photographers Munn tells us Hawk eye RC miniature aircraft carrying sophis ticated Nikon 35mm still-camera equipment can capture images would otherwise go unappreciated Operating alti tudes low 20 feet high 1000 making during single flight both vertical areasearch oblique exposures varying altitudes ranges Hawkeye can provide fresh perspec tives often reveal interesting relationships between subject surroundings well new aspects subject itself Hawkeye has wide variety applications Bob continues Business industrial location publicity photographs different angle real estate survey sales programs advertising materials variety forms satisfaction personal objectives among system useful nature photography well construction archaeology periodic photography kind produces useful interesting documentation progress well demonstrating relationship site sur roundings Bobs business aircraft gets airborne less 75 feet requires 150 feet smooth clear space landing due sheer inertia 20-lb aircraft moving 30 mph operates off average rural dirt road Ideal large paved parking lot smooth grass playing field free obstructions opposite ends Fuel lasts 20 minutes camera operates speeds up four exposures second typical flight produces 30-36 B&W color negativesof 60-70% will useful Now back Bob Top quality images suitable full-page Top Heinz Koerner electric twin Par tenaviaright Scale-like Quad Middle 55-in 73-oz Partenavia super flierit really moves says Heinz Carries 12 12 Ah cells 495 sq wing area Above Quad fourAstro02sflies bycan loopfrom level flight Extended cruise achieved switching off two motors text magazine presentation produced Detail de pends large part lens-to-object distance high-altitude vertical area photo covering over 1000 linear feet ground will have detail taken lower altitude covering much smaller area Because moving platform cannot use slow super-finegrain films material ASA rating 100 will reproduce excellent results under normal lighting conditions using B&W negative material working remote locations film can processed spot negatives can assessed additional flights made necessary obtain desired results What for-hire missions Objectives relate primarily production images particular interest high quality thorough discussion kind images desired specific flight essential survey subject its relationship light sources 16 Model Aviation 9 Bill Wi ruiuing exquisite ano greatimying ojinsun SR-6 top Bob Smurthwaite G-S Products WW II veteran also flew 600 combat hours Chennault lower pic hes posed pile Engelman spruce Winter using /4-scale Vagabond Text has details fine wood Bob has spent life around lumbering sawmills Hes willing supply big-plane builders specia en Shipps Up,..- rubber-powered twin 23-in span didnt go scale 3-in props too small So lower pic two nosesscale left single wide nose grafted ROG wing tail removed subject individual negotiations project packages costs based number type acceptable images produced necessarily number flights required produce Authors Note legitimate firms writing company letterheads Munn has typical portfolio available instruction Ad dress him care Model Aviation nearby area cost project can range considerably since variables involved Bob ex plains As starting point flight producing 30-36 exposures type film conducted under average conditions would cost about hundred dollars would include visit survey discussion operational flight second visit processing delivery slide negative material B&W contact After finish -scale Piper Vagabond sheet furnished other prints services etc big 1981/82 winter project will electric 4involve additional costs engined Constellation confess long un purchaser obtains one-time use rights requited love affair Connie having materials produced otherwise remain witnessed quiet magic Srulls 6-ft Spitfire property operator Exclusive rights published MA very much lightened over prototype might say passion Connie rekindled am regular correspondence Bob Boucher Mitch Polling sometimes calls Bob Kopski innovative genius Heinz Koerner Bob Boucher example has provided laborious notes combination size motor makes belt-drive direct along loadings plane sizes performance batteries etc Some combinations job Superman Convairsome spectacular beyond dreams might go four direct-drive 075s about 7-ft span excites please wait because youll need see essential frame techJune1981 17 Above Bob Munn wing hand shows off Hawkeye camera plane carries Nikon sophisticated paying aerial photog raphy assignments pic taken Utah Valley Aeromodelers field Provo UT right two shots Bobs handiwork upper picture taken straight down about 150-ft altitude what remains early American building near Goshen UT site explored Brigham Young University lower view main taxiway Provo Air port very busy lightplane facilityaltitude Hawkeye picture also about 150 feet niquesleast asked him summary questions last years Electric Fly year Sept 20and answers hit jackpot Heinz rain date Sept 27 Bob Kopski 25 West End Comment Electric good gliders Dr Landsdale PA 19446 Koerner found visit-Answer aerobatics twin 075 ing modelers comments interesting say the22-oz wing loading proved otherwise Comment flying time short zoom across sky 2 minutes wait until battery charged again Answer Kopski built fast acrobatic plane semi-symmetrical airfoil Astro 108 x6 prop 1212 Ahcells Running time 6-7 mm depending aero batics have 02-powered glider four 12 Ah cells 6 minutes running time Gross 24 oz area 360 squares three Ace Midget servos Twenty-minute flights back yard com mon depending lift fly day 20mm waits use three battery packs planes Packs easy remove through hatch canopy charge use 115 Ah marine battery powers 28-lb-thrust trolling motor another good electric combination also have two Astro Rapid Chargers way field charge two batteries field install battery charging third exchange charged battery discharged Rotating batteries permits steady all-day flying also rapid-charge Rx Tx batteries Author Have read directions advising against charging car battery engine running suppose Heinz doesnt way Comment tried electric after 10 flights battery failed bought another went under after eight flights Too expensive. Answer Nicad battery takes less charge cold Warms up first flight takes good charge second time During second flight battery warms up After several charge/discharge cycles battery hot can damaged Provide good cooling Venting holes Astro cases enough such heavy use Open up consider ably battery feels too hot cool small fan before during charging Dont throw damaged pack away usually bad cell Measure voltage across cell help 5-ohm load resistor Bad cell drops faster good Replace bad cell dont short out battery because can start fire burn hands Author Spitfire have pack supported tabs very well exposed cooling does get hot touch warm. content wait recharge because have other models fly Comment will take off grass field Answer Small models will Author True gas too Spitfire takes off beautiful realism grass Most light wingloading jobs geared motors geared 15 Spit take off easily No problem Twin 15 either 25 need light wing loading 10 x 4 prop Author Spitfire has 14-oz loading guys call gross high tell us will perform brilliantly geared 25 Heinz has flown 24-oz loading Comment Have electric left home Im good have glider car never flew contest Answer fun-fly contest present few pix Heinz remarkable planes miscellaneous comments Quad experimental started twin 05 now four 02s Scale Flight system wired four 12 Ah cells power two inboard motors four 12 Ah cells two outboards Maintains level flight turns two motors four will loop Out straight flight running time 4 mm Cooling provided through hole windshield fuselage bottom Author Vent position type important vent Spit through open cockpit canopy Motor cow ling made toilet paper rolls Span 61 flat bottom 460 squares gross 52 oz 4-channel Partenavia has 55-in span 495 squares gross 73 oz Two cellstotal 12 12 Ah cells Really moves Plans better looking Continued page 108 18 Model Aviation joehe6eqsute.and exfe#zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 KIORITZ Deep Fins Optimum Cooling 21/4 Flywheel Small Magneto 1 5/am Six Bo Aluminum Hub Endorsed Don Godfrey Phone 607 722-1765 Pre-Drilled Props Available Ask About Custom Built KIORITZ Engines Carb Needles &Throttle Accessible Running Points Sealed Rear Housing $189 Pre-Paid Orders Pay Shipping Dealer Inquiries Welcome Year Limited Warranty Safety Preston Continued page 13 could have avoided cool refreshing prior takeoff FAA has strict rules about drinking flying full-scale ones shouldnt close months column would like say pleased learn AMA Executive Council approved formation Safety Committee its last meeting January 31 have asked member committee have accepted Others represent ing different facets hobby have also asked until hear has accepted will mention names Most mail subject Safety Committee has come readers very much favor idea BALSA SHEETS 4x48xr/1649 4x48x3A3252 4x48x%62 4x48x3/is74 4x48x90 4x48x1/2108 6x48x/r74 6x48x3As278 6x48x/s93 6x48x3/is111 6x48x135 6x48x162 PLYWOOD 6x48x1/as125 6x48x/16136 6x48x3/2175 6x48x185 6x48x3/is240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 ENGINES BY GIBBS HOBBY & RESEARCH Original Developer Factory Trained Authorized Master Service Dealer SPECIFICATIONS 242 Cu 397CC 32 HP 8000 rpm Weight 61/2 lb Ball Bearings Crank Caged Rollers Rod Piston Pin Walbro Pump Garb 3 Ring Piston GIBBS HOBBY & RESEARCH 6195 HilIfield StNW N CANTON OHIO 44720 Phone216499-8854 After6 OOPMJ Accept Visa & Master Card Only letter voiced objectionon grounds would generate unenforceable regulations Such regulations could cause rise price certain hobby products no increase safety same letter suggested A committee sole purpose education might useful effective agree goals Safety Committee should educate modelers following safe practices dont feel should sole aim committee Show Team members generally upset what believed hasty action part Executive Council its overall ban use pyrotechnics model airshows ban has now replaced operating guidelines use pyrotechnics airshows believe issues such type things Safety Committee should handle As happens Air Show team member has asked sit committee Another issue believe should referred Safety Committee concerns new rules FAI Pylon Racing class F3D bulk rules published Bill Hagers column April issue MA However understand rules also stipulate on-course officials competitors must wear crash helmet chin strap rules also state helmet must able wit hstand impact ofa flying Pylon model No suggesting Safety Committee should conduct tests live volunteers determine helments currently market will meet requirement What suggest committee come up workable interpretation require ment number different safety standards helmets already existence suggest committee should determine would result helmets come closest fulfilling spirit FAI require ment Whether course officials competitors FAI Pylon races held US must wear approved helmet another issue would also need resolution Any comments Till next month have safe John Preston c/o ModelAviation 815 Fifieenth St N W Washington DC 20005 Fun/Winter Continued page 18 wing Quad Twin 15 grass field takeoffs Heinz tells us instead dropping resistor Spit cruise power switches off two four motors Way go Will Connie No power loss added drain extended cruise will possible Hoping 10 minutes Lots guysbut thats month September 5-7 last European Champion ships F3E Electro Flight held Amay Belgium 66 entrants flew official FAI rules become effective January 1 1983 AMA rule book may have refer book follow discus sion However European Championships Class F3B Stand-Off Scale also flown rules AMA bookapparently pro visional experimental rules F3B cable launch replaced 60sec motor run following tasks completed within 15 minutes speed dura tion precision landing Also provisional pylon race four models around three pylons two 180-meter legs 40-meter base leg race consisting 10 laps Youll have forgive rambling because post-contest booklet fragmented four languages moment have AMA copy illustration pattem type event alas well have leave later Since official rules F3E AMA rule book include flight diagram weve redrawn contest book gives some indication state-of-the-art Europe some rather wild things have going trickle information reaching country Bear mind FAI rules permit up 2325 sq area 11-lb weight permissible loading between 393 2459 oz/sq ft Some resultant flying power houses mind boggling carefully read caption under diagram youll find impli cations electric give task trythere could World Champs some near-future day 108 Model Aviation THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly Slow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9%x 12 high $34 9 5 dealer postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112 Windsor CA 95492 new problems get sucked improvements lead on Dave Hendersons motivations mixed also wanted something different doesnt surprise us Golly whip out same thing dozens Combat can chain bench Daves just-for-the-fun-of-it thing sparked idea could get motor weight back far enough turn ratio would increase surprisingly ended up 5 oz nose weight flies shows promise competitive Fast Any advantage may underscores may three times have lost another problem spraybar directly over lower wing So forestall possible burning added section aluminum under spraybar next Bi-Bat will have nose extended seems scotch original brainstorm knows what strange craft might drawing shows one-inch nose extension plywood center section will reduced weight has mixed emotions mentions flies like dog compared topranking ships yet says does have good perform ance feels weight disadvantage can overcome Dave thinks Combat brethren would interested cut-and-try experi mentsso chap wonderful RC Stinson floats Bob Smurthwaite gentleman simply must meet CL fliers know 3-line control system best Carrier kits dont see system around becasue became disgusted jobbers zero big money makersthat RC couldnt beat would join Stinson equally lovely Howard sometimes see advertised first result have career-man son armament deep Stinson putting together Silver 7 kit itthe straight-wing Stinson RCM Scale Kit Year SR-6 Reliant flies extremely well 40 Bobs 2000-foot elevation requires full power water takeoffs floats cruises half-throttle Smooth stable flies better Bob trainer hes meddled wheels 10 x 6 wide Zinger has reached 1000 feet 30 sec has measured have 2000 ft/min climb rate using 10% nitro Weight is6 lb under6ft span Like author Bob considers himself per petual novice test pilot built sample has 8000 hours 3000 aerobatics hands model does big ship could dolike inverted floats spins snaps added wing flaps SR-6 Bob built side-slips short-field landings virtually no roll-out Going over kit son Mike impressed structural design quality cutting balsa ply parts Out context Bob flew 283 missions 10th Air Force China Continued page 114 110 Model Aviation K61 R/C uffler$13995 Including wruw .r call mar lnaomation RJL INOUSTRIESePO BOX 5654PASADENA CA 91107 chilly day guys critiqued test Stinson Voyager Realistic Models Theyre Bob Beckman Bill Winter Clarence ErIIcnIne latter engineering-type test pilot aerobatics flier gets away Ace Service Center Despite trio coming up some points forthe designer Les Putnam check its greatairplane mad building spree Leswhipped outtwo planes within month suit testy trios nit picking Right Les Putnam two models frame stage built trios request colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507
Edition: Model Aviation - 1981/06
Page Numbers: 16, 17, 18, 108, 110, 114
1 jtkerh JOURNEY center earth years can remember ingenious modelers have toying camera planes long before modern miniature aircraft people used kites support cameras high air novelty first aerial photography using RCjobs has demonstrated scientific worth public stunning variety ways can make money Aerial model photography richly rewarding anyone combines twin hobbies photography RC flying especially meaningful business-like objectives coordinated few have put together Bob Munn Orem UT As read probably will off archaeological digs Greece North Africa might Out capturing film some local ruin spanking new shopping center What really drives lenswizards like Hux Peter Miller Bob Munn gap perspectives between tall ladders low-flying normal aircraft interesting photographers Munn tells us Hawk eye RC miniature aircraft carrying sophis ticated Nikon 35mm still-camera equipment can capture images would otherwise go unappreciated Operating alti tudes low 20 feet high 1000 making during single flight both vertical areasearch oblique exposures varying altitudes ranges Hawkeye can provide fresh perspec tives often reveal interesting relationships between subject surroundings well new aspects subject itself Hawkeye has wide variety applications Bob continues Business industrial location publicity photographs different angle real estate survey sales programs advertising materials variety forms satisfaction personal objectives among system useful nature photography well construction archaeology periodic photography kind produces useful interesting documentation progress well demonstrating relationship site sur roundings Bobs business aircraft gets airborne less 75 feet requires 150 feet smooth clear space landing due sheer inertia 20-lb aircraft moving 30 mph operates off average rural dirt road Ideal large paved parking lot smooth grass playing field free obstructions opposite ends Fuel lasts 20 minutes camera operates speeds up four exposures second typical flight produces 30-36 B&W color negativesof 60-70% will useful Now back Bob Top quality images suitable full-page Top Heinz Koerner electric twin Par tenaviaright Scale-like Quad Middle 55-in 73-oz Partenavia super flierit really moves says Heinz Carries 12 12 Ah cells 495 sq wing area Above Quad fourAstro02sflies bycan loopfrom level flight Extended cruise achieved switching off two motors text magazine presentation produced Detail de pends large part lens-to-object distance high-altitude vertical area photo covering over 1000 linear feet ground will have detail taken lower altitude covering much smaller area Because moving platform cannot use slow super-finegrain films material ASA rating 100 will reproduce excellent results under normal lighting conditions using B&W negative material working remote locations film can processed spot negatives can assessed additional flights made necessary obtain desired results What for-hire missions Objectives relate primarily production images particular interest high quality thorough discussion kind images desired specific flight essential survey subject its relationship light sources 16 Model Aviation 9 Bill Wi ruiuing exquisite ano greatimying ojinsun SR-6 top Bob Smurthwaite G-S Products WW II veteran also flew 600 combat hours Chennault lower pic hes posed pile Engelman spruce Winter using /4-scale Vagabond Text has details fine wood Bob has spent life around lumbering sawmills Hes willing supply big-plane builders specia en Shipps Up,..- rubber-powered twin 23-in span didnt go scale 3-in props too small So lower pic two nosesscale left single wide nose grafted ROG wing tail removed subject individual negotiations project packages costs based number type acceptable images produced necessarily number flights required produce Authors Note legitimate firms writing company letterheads Munn has typical portfolio available instruction Ad dress him care Model Aviation nearby area cost project can range considerably since variables involved Bob ex plains As starting point flight producing 30-36 exposures type film conducted under average conditions would cost about hundred dollars would include visit survey discussion operational flight second visit processing delivery slide negative material B&W contact After finish -scale Piper Vagabond sheet furnished other prints services etc big 1981/82 winter project will electric 4involve additional costs engined Constellation confess long un purchaser obtains one-time use rights requited love affair Connie having materials produced otherwise remain witnessed quiet magic Srulls 6-ft Spitfire property operator Exclusive rights published MA very much lightened over prototype might say passion Connie rekindled am regular correspondence Bob Boucher Mitch Polling sometimes calls Bob Kopski innovative genius Heinz Koerner Bob Boucher example has provided laborious notes combination size motor makes belt-drive direct along loadings plane sizes performance batteries etc Some combinations job Superman Convairsome spectacular beyond dreams might go four direct-drive 075s about 7-ft span excites please wait because youll need see essential frame techJune1981 17 Above Bob Munn wing hand shows off Hawkeye camera plane carries Nikon sophisticated paying aerial photog raphy assignments pic taken Utah Valley Aeromodelers field Provo UT right two shots Bobs handiwork upper picture taken straight down about 150-ft altitude what remains early American building near Goshen UT site explored Brigham Young University lower view main taxiway Provo Air port very busy lightplane facilityaltitude Hawkeye picture also about 150 feet niquesleast asked him summary questions last years Electric Fly year Sept 20and answers hit jackpot Heinz rain date Sept 27 Bob Kopski 25 West End Comment Electric good gliders Dr Landsdale PA 19446 Koerner found visit-Answer aerobatics twin 075 ing modelers comments interesting say the22-oz wing loading proved otherwise Comment flying time short zoom across sky 2 minutes wait until battery charged again Answer Kopski built fast acrobatic plane semi-symmetrical airfoil Astro 108 x6 prop 1212 Ahcells Running time 6-7 mm depending aero batics have 02-powered glider four 12 Ah cells 6 minutes running time Gross 24 oz area 360 squares three Ace Midget servos Twenty-minute flights back yard com mon depending lift fly day 20mm waits use three battery packs planes Packs easy remove through hatch canopy charge use 115 Ah marine battery powers 28-lb-thrust trolling motor another good electric combination also have two Astro Rapid Chargers way field charge two batteries field install battery charging third exchange charged battery discharged Rotating batteries permits steady all-day flying also rapid-charge Rx Tx batteries Author Have read directions advising against charging car battery engine running suppose Heinz doesnt way Comment tried electric after 10 flights battery failed bought another went under after eight flights Too expensive. Answer Nicad battery takes less charge cold Warms up first flight takes good charge second time During second flight battery warms up After several charge/discharge cycles battery hot can damaged Provide good cooling Venting holes Astro cases enough such heavy use Open up consider ably battery feels too hot cool small fan before during charging Dont throw damaged pack away usually bad cell Measure voltage across cell help 5-ohm load resistor Bad cell drops faster good Replace bad cell dont short out battery because can start fire burn hands Author Spitfire have pack supported tabs very well exposed cooling does get hot touch warm. content wait recharge because have other models fly Comment will take off grass field Answer Small models will Author True gas too Spitfire takes off beautiful realism grass Most light wingloading jobs geared motors geared 15 Spit take off easily No problem Twin 15 either 25 need light wing loading 10 x 4 prop Author Spitfire has 14-oz loading guys call gross high tell us will perform brilliantly geared 25 Heinz has flown 24-oz loading Comment Have electric left home Im good have glider car never flew contest Answer fun-fly contest present few pix Heinz remarkable planes miscellaneous comments Quad experimental started twin 05 now four 02s Scale Flight system wired four 12 Ah cells power two inboard motors four 12 Ah cells two outboards Maintains level flight turns two motors four will loop Out straight flight running time 4 mm Cooling provided through hole windshield fuselage bottom Author Vent position type important vent Spit through open cockpit canopy Motor cow ling made toilet paper rolls Span 61 flat bottom 460 squares gross 52 oz 4-channel Partenavia has 55-in span 495 squares gross 73 oz Two cellstotal 12 12 Ah cells Really moves Plans better looking Continued page 108 18 Model Aviation joehe6eqsute.and exfe#zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 KIORITZ Deep Fins Optimum Cooling 21/4 Flywheel Small Magneto 1 5/am Six Bo Aluminum Hub Endorsed Don Godfrey Phone 607 722-1765 Pre-Drilled Props Available Ask About Custom Built KIORITZ Engines Carb Needles &Throttle Accessible Running Points Sealed Rear Housing $189 Pre-Paid Orders Pay Shipping Dealer Inquiries Welcome Year Limited Warranty Safety Preston Continued page 13 could have avoided cool refreshing prior takeoff FAA has strict rules about drinking flying full-scale ones shouldnt close months column would like say pleased learn AMA Executive Council approved formation Safety Committee its last meeting January 31 have asked member committee have accepted Others represent ing different facets hobby have also asked until hear has accepted will mention names Most mail subject Safety Committee has come readers very much favor idea BALSA SHEETS 4x48xr/1649 4x48x3A3252 4x48x%62 4x48x3/is74 4x48x90 4x48x1/2108 6x48x/r74 6x48x3As278 6x48x/s93 6x48x3/is111 6x48x135 6x48x162 PLYWOOD 6x48x1/as125 6x48x/16136 6x48x3/2175 6x48x185 6x48x3/is240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 ENGINES BY GIBBS HOBBY & RESEARCH Original Developer Factory Trained Authorized Master Service Dealer SPECIFICATIONS 242 Cu 397CC 32 HP 8000 rpm Weight 61/2 lb Ball Bearings Crank Caged Rollers Rod Piston Pin Walbro Pump Garb 3 Ring Piston GIBBS HOBBY & RESEARCH 6195 HilIfield StNW N CANTON OHIO 44720 Phone216499-8854 After6 OOPMJ Accept Visa & Master Card Only letter voiced objectionon grounds would generate unenforceable regulations Such regulations could cause rise price certain hobby products no increase safety same letter suggested A committee sole purpose education might useful effective agree goals Safety Committee should educate modelers following safe practices dont feel should sole aim committee Show Team members generally upset what believed hasty action part Executive Council its overall ban use pyrotechnics model airshows ban has now replaced operating guidelines use pyrotechnics airshows believe issues such type things Safety Committee should handle As happens Air Show team member has asked sit committee Another issue believe should referred Safety Committee concerns new rules FAI Pylon Racing class F3D bulk rules published Bill Hagers column April issue MA However understand rules also stipulate on-course officials competitors must wear crash helmet chin strap rules also state helmet must able wit hstand impact ofa flying Pylon model No suggesting Safety Committee should conduct tests live volunteers determine helments currently market will meet requirement What suggest committee come up workable interpretation require ment number different safety standards helmets already existence suggest committee should determine would result helmets come closest fulfilling spirit FAI require ment Whether course officials competitors FAI Pylon races held US must wear approved helmet another issue would also need resolution Any comments Till next month have safe John Preston c/o ModelAviation 815 Fifieenth St N W Washington DC 20005 Fun/Winter Continued page 18 wing Quad Twin 15 grass field takeoffs Heinz tells us instead dropping resistor Spit cruise power switches off two four motors Way go Will Connie No power loss added drain extended cruise will possible Hoping 10 minutes Lots guysbut thats month September 5-7 last European Champion ships F3E Electro Flight held Amay Belgium 66 entrants flew official FAI rules become effective January 1 1983 AMA rule book may have refer book follow discus sion However European Championships Class F3B Stand-Off Scale also flown rules AMA bookapparently pro visional experimental rules F3B cable launch replaced 60sec motor run following tasks completed within 15 minutes speed dura tion precision landing Also provisional pylon race four models around three pylons two 180-meter legs 40-meter base leg race consisting 10 laps Youll have forgive rambling because post-contest booklet fragmented four languages moment have AMA copy illustration pattem type event alas well have leave later Since official rules F3E AMA rule book include flight diagram weve redrawn contest book gives some indication state-of-the-art Europe some rather wild things have going trickle information reaching country Bear mind FAI rules permit up 2325 sq area 11-lb weight permissible loading between 393 2459 oz/sq ft Some resultant flying power houses mind boggling carefully read caption under diagram youll find impli cations electric give task trythere could World Champs some near-future day 108 Model Aviation THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly Slow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9%x 12 high $34 9 5 dealer postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112 Windsor CA 95492 new problems get sucked improvements lead on Dave Hendersons motivations mixed also wanted something different doesnt surprise us Golly whip out same thing dozens Combat can chain bench Daves just-for-the-fun-of-it thing sparked idea could get motor weight back far enough turn ratio would increase surprisingly ended up 5 oz nose weight flies shows promise competitive Fast Any advantage may underscores may three times have lost another problem spraybar directly over lower wing So forestall possible burning added section aluminum under spraybar next Bi-Bat will have nose extended seems scotch original brainstorm knows what strange craft might drawing shows one-inch nose extension plywood center section will reduced weight has mixed emotions mentions flies like dog compared topranking ships yet says does have good perform ance feels weight disadvantage can overcome Dave thinks Combat brethren would interested cut-and-try experi mentsso chap wonderful RC Stinson floats Bob Smurthwaite gentleman simply must meet CL fliers know 3-line control system best Carrier kits dont see system around becasue became disgusted jobbers zero big money makersthat RC couldnt beat would join Stinson equally lovely Howard sometimes see advertised first result have career-man son armament deep Stinson putting together Silver 7 kit itthe straight-wing Stinson RCM Scale Kit Year SR-6 Reliant flies extremely well 40 Bobs 2000-foot elevation requires full power water takeoffs floats cruises half-throttle Smooth stable flies better Bob trainer hes meddled wheels 10 x 6 wide Zinger has reached 1000 feet 30 sec has measured have 2000 ft/min climb rate using 10% nitro Weight is6 lb under6ft span Like author Bob considers himself per petual novice test pilot built sample has 8000 hours 3000 aerobatics hands model does big ship could dolike inverted floats spins snaps added wing flaps SR-6 Bob built side-slips short-field landings virtually no roll-out Going over kit son Mike impressed structural design quality cutting balsa ply parts Out context Bob flew 283 missions 10th Air Force China Continued page 114 110 Model Aviation K61 R/C uffler$13995 Including wruw .r call mar lnaomation RJL INOUSTRIESePO BOX 5654PASADENA CA 91107 chilly day guys critiqued test Stinson Voyager Realistic Models Theyre Bob Beckman Bill Winter Clarence ErIIcnIne latter engineering-type test pilot aerobatics flier gets away Ace Service Center Despite trio coming up some points forthe designer Les Putnam check its greatairplane mad building spree Leswhipped outtwo planes within month suit testy trios nit picking Right Les Putnam two models frame stage built trios request colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507
Edition: Model Aviation - 1981/06
Page Numbers: 16, 17, 18, 108, 110, 114
1 jtkerh JOURNEY center earth years can remember ingenious modelers have toying camera planes long before modern miniature aircraft people used kites support cameras high air novelty first aerial photography using RCjobs has demonstrated scientific worth public stunning variety ways can make money Aerial model photography richly rewarding anyone combines twin hobbies photography RC flying especially meaningful business-like objectives coordinated few have put together Bob Munn Orem UT As read probably will off archaeological digs Greece North Africa might Out capturing film some local ruin spanking new shopping center What really drives lenswizards like Hux Peter Miller Bob Munn gap perspectives between tall ladders low-flying normal aircraft interesting photographers Munn tells us Hawk eye RC miniature aircraft carrying sophis ticated Nikon 35mm still-camera equipment can capture images would otherwise go unappreciated Operating alti tudes low 20 feet high 1000 making during single flight both vertical areasearch oblique exposures varying altitudes ranges Hawkeye can provide fresh perspec tives often reveal interesting relationships between subject surroundings well new aspects subject itself Hawkeye has wide variety applications Bob continues Business industrial location publicity photographs different angle real estate survey sales programs advertising materials variety forms satisfaction personal objectives among system useful nature photography well construction archaeology periodic photography kind produces useful interesting documentation progress well demonstrating relationship site sur roundings Bobs business aircraft gets airborne less 75 feet requires 150 feet smooth clear space landing due sheer inertia 20-lb aircraft moving 30 mph operates off average rural dirt road Ideal large paved parking lot smooth grass playing field free obstructions opposite ends Fuel lasts 20 minutes camera operates speeds up four exposures second typical flight produces 30-36 B&W color negativesof 60-70% will useful Now back Bob Top quality images suitable full-page Top Heinz Koerner electric twin Par tenaviaright Scale-like Quad Middle 55-in 73-oz Partenavia super flierit really moves says Heinz Carries 12 12 Ah cells 495 sq wing area Above Quad fourAstro02sflies bycan loopfrom level flight Extended cruise achieved switching off two motors text magazine presentation produced Detail de pends large part lens-to-object distance high-altitude vertical area photo covering over 1000 linear feet ground will have detail taken lower altitude covering much smaller area Because moving platform cannot use slow super-finegrain films material ASA rating 100 will reproduce excellent results under normal lighting conditions using B&W negative material working remote locations film can processed spot negatives can assessed additional flights made necessary obtain desired results What for-hire missions Objectives relate primarily production images particular interest high quality thorough discussion kind images desired specific flight essential survey subject its relationship light sources 16 Model Aviation 9 Bill Wi ruiuing exquisite ano greatimying ojinsun SR-6 top Bob Smurthwaite G-S Products WW II veteran also flew 600 combat hours Chennault lower pic hes posed pile Engelman spruce Winter using /4-scale Vagabond Text has details fine wood Bob has spent life around lumbering sawmills Hes willing supply big-plane builders specia en Shipps Up,..- rubber-powered twin 23-in span didnt go scale 3-in props too small So lower pic two nosesscale left single wide nose grafted ROG wing tail removed subject individual negotiations project packages costs based number type acceptable images produced necessarily number flights required produce Authors Note legitimate firms writing company letterheads Munn has typical portfolio available instruction Ad dress him care Model Aviation nearby area cost project can range considerably since variables involved Bob ex plains As starting point flight producing 30-36 exposures type film conducted under average conditions would cost about hundred dollars would include visit survey discussion operational flight second visit processing delivery slide negative material B&W contact After finish -scale Piper Vagabond sheet furnished other prints services etc big 1981/82 winter project will electric 4involve additional costs engined Constellation confess long un purchaser obtains one-time use rights requited love affair Connie having materials produced otherwise remain witnessed quiet magic Srulls 6-ft Spitfire property operator Exclusive rights published MA very much lightened over prototype might say passion Connie rekindled am regular correspondence Bob Boucher Mitch Polling sometimes calls Bob Kopski innovative genius Heinz Koerner Bob Boucher example has provided laborious notes combination size motor makes belt-drive direct along loadings plane sizes performance batteries etc Some combinations job Superman Convairsome spectacular beyond dreams might go four direct-drive 075s about 7-ft span excites please wait because youll need see essential frame techJune1981 17 Above Bob Munn wing hand shows off Hawkeye camera plane carries Nikon sophisticated paying aerial photog raphy assignments pic taken Utah Valley Aeromodelers field Provo UT right two shots Bobs handiwork upper picture taken straight down about 150-ft altitude what remains early American building near Goshen UT site explored Brigham Young University lower view main taxiway Provo Air port very busy lightplane facilityaltitude Hawkeye picture also about 150 feet niquesleast asked him summary questions last years Electric Fly year Sept 20and answers hit jackpot Heinz rain date Sept 27 Bob Kopski 25 West End Comment Electric good gliders Dr Landsdale PA 19446 Koerner found visit-Answer aerobatics twin 075 ing modelers comments interesting say the22-oz wing loading proved otherwise Comment flying time short zoom across sky 2 minutes wait until battery charged again Answer Kopski built fast acrobatic plane semi-symmetrical airfoil Astro 108 x6 prop 1212 Ahcells Running time 6-7 mm depending aero batics have 02-powered glider four 12 Ah cells 6 minutes running time Gross 24 oz area 360 squares three Ace Midget servos Twenty-minute flights back yard com mon depending lift fly day 20mm waits use three battery packs planes Packs easy remove through hatch canopy charge use 115 Ah marine battery powers 28-lb-thrust trolling motor another good electric combination also have two Astro Rapid Chargers way field charge two batteries field install battery charging third exchange charged battery discharged Rotating batteries permits steady all-day flying also rapid-charge Rx Tx batteries Author Have read directions advising against charging car battery engine running suppose Heinz doesnt way Comment tried electric after 10 flights battery failed bought another went under after eight flights Too expensive. Answer Nicad battery takes less charge cold Warms up first flight takes good charge second time During second flight battery warms up After several charge/discharge cycles battery hot can damaged Provide good cooling Venting holes Astro cases enough such heavy use Open up consider ably battery feels too hot cool small fan before during charging Dont throw damaged pack away usually bad cell Measure voltage across cell help 5-ohm load resistor Bad cell drops faster good Replace bad cell dont short out battery because can start fire burn hands Author Spitfire have pack supported tabs very well exposed cooling does get hot touch warm. content wait recharge because have other models fly Comment will take off grass field Answer Small models will Author True gas too Spitfire takes off beautiful realism grass Most light wingloading jobs geared motors geared 15 Spit take off easily No problem Twin 15 either 25 need light wing loading 10 x 4 prop Author Spitfire has 14-oz loading guys call gross high tell us will perform brilliantly geared 25 Heinz has flown 24-oz loading Comment Have electric left home Im good have glider car never flew contest Answer fun-fly contest present few pix Heinz remarkable planes miscellaneous comments Quad experimental started twin 05 now four 02s Scale Flight system wired four 12 Ah cells power two inboard motors four 12 Ah cells two outboards Maintains level flight turns two motors four will loop Out straight flight running time 4 mm Cooling provided through hole windshield fuselage bottom Author Vent position type important vent Spit through open cockpit canopy Motor cow ling made toilet paper rolls Span 61 flat bottom 460 squares gross 52 oz 4-channel Partenavia has 55-in span 495 squares gross 73 oz Two cellstotal 12 12 Ah cells Really moves Plans better looking Continued page 108 18 Model Aviation joehe6eqsute.and exfe#zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 KIORITZ Deep Fins Optimum Cooling 21/4 Flywheel Small Magneto 1 5/am Six Bo Aluminum Hub Endorsed Don Godfrey Phone 607 722-1765 Pre-Drilled Props Available Ask About Custom Built KIORITZ Engines Carb Needles &Throttle Accessible Running Points Sealed Rear Housing $189 Pre-Paid Orders Pay Shipping Dealer Inquiries Welcome Year Limited Warranty Safety Preston Continued page 13 could have avoided cool refreshing prior takeoff FAA has strict rules about drinking flying full-scale ones shouldnt close months column would like say pleased learn AMA Executive Council approved formation Safety Committee its last meeting January 31 have asked member committee have accepted Others represent ing different facets hobby have also asked until hear has accepted will mention names Most mail subject Safety Committee has come readers very much favor idea BALSA SHEETS 4x48xr/1649 4x48x3A3252 4x48x%62 4x48x3/is74 4x48x90 4x48x1/2108 6x48x/r74 6x48x3As278 6x48x/s93 6x48x3/is111 6x48x135 6x48x162 PLYWOOD 6x48x1/as125 6x48x/16136 6x48x3/2175 6x48x185 6x48x3/is240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 ENGINES BY GIBBS HOBBY & RESEARCH Original Developer Factory Trained Authorized Master Service Dealer SPECIFICATIONS 242 Cu 397CC 32 HP 8000 rpm Weight 61/2 lb Ball Bearings Crank Caged Rollers Rod Piston Pin Walbro Pump Garb 3 Ring Piston GIBBS HOBBY & RESEARCH 6195 HilIfield StNW N CANTON OHIO 44720 Phone216499-8854 After6 OOPMJ Accept Visa & Master Card Only letter voiced objectionon grounds would generate unenforceable regulations Such regulations could cause rise price certain hobby products no increase safety same letter suggested A committee sole purpose education might useful effective agree goals Safety Committee should educate modelers following safe practices dont feel should sole aim committee Show Team members generally upset what believed hasty action part Executive Council its overall ban use pyrotechnics model airshows ban has now replaced operating guidelines use pyrotechnics airshows believe issues such type things Safety Committee should handle As happens Air Show team member has asked sit committee Another issue believe should referred Safety Committee concerns new rules FAI Pylon Racing class F3D bulk rules published Bill Hagers column April issue MA However understand rules also stipulate on-course officials competitors must wear crash helmet chin strap rules also state helmet must able wit hstand impact ofa flying Pylon model No suggesting Safety Committee should conduct tests live volunteers determine helments currently market will meet requirement What suggest committee come up workable interpretation require ment number different safety standards helmets already existence suggest committee should determine would result helmets come closest fulfilling spirit FAI require ment Whether course officials competitors FAI Pylon races held US must wear approved helmet another issue would also need resolution Any comments Till next month have safe John Preston c/o ModelAviation 815 Fifieenth St N W Washington DC 20005 Fun/Winter Continued page 18 wing Quad Twin 15 grass field takeoffs Heinz tells us instead dropping resistor Spit cruise power switches off two four motors Way go Will Connie No power loss added drain extended cruise will possible Hoping 10 minutes Lots guysbut thats month September 5-7 last European Champion ships F3E Electro Flight held Amay Belgium 66 entrants flew official FAI rules become effective January 1 1983 AMA rule book may have refer book follow discus sion However European Championships Class F3B Stand-Off Scale also flown rules AMA bookapparently pro visional experimental rules F3B cable launch replaced 60sec motor run following tasks completed within 15 minutes speed dura tion precision landing Also provisional pylon race four models around three pylons two 180-meter legs 40-meter base leg race consisting 10 laps Youll have forgive rambling because post-contest booklet fragmented four languages moment have AMA copy illustration pattem type event alas well have leave later Since official rules F3E AMA rule book include flight diagram weve redrawn contest book gives some indication state-of-the-art Europe some rather wild things have going trickle information reaching country Bear mind FAI rules permit up 2325 sq area 11-lb weight permissible loading between 393 2459 oz/sq ft Some resultant flying power houses mind boggling carefully read caption under diagram youll find impli cations electric give task trythere could World Champs some near-future day 108 Model Aviation THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly Slow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9%x 12 high $34 9 5 dealer postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112 Windsor CA 95492 new problems get sucked improvements lead on Dave Hendersons motivations mixed also wanted something different doesnt surprise us Golly whip out same thing dozens Combat can chain bench Daves just-for-the-fun-of-it thing sparked idea could get motor weight back far enough turn ratio would increase surprisingly ended up 5 oz nose weight flies shows promise competitive Fast Any advantage may underscores may three times have lost another problem spraybar directly over lower wing So forestall possible burning added section aluminum under spraybar next Bi-Bat will have nose extended seems scotch original brainstorm knows what strange craft might drawing shows one-inch nose extension plywood center section will reduced weight has mixed emotions mentions flies like dog compared topranking ships yet says does have good perform ance feels weight disadvantage can overcome Dave thinks Combat brethren would interested cut-and-try experi mentsso chap wonderful RC Stinson floats Bob Smurthwaite gentleman simply must meet CL fliers know 3-line control system best Carrier kits dont see system around becasue became disgusted jobbers zero big money makersthat RC couldnt beat would join Stinson equally lovely Howard sometimes see advertised first result have career-man son armament deep Stinson putting together Silver 7 kit itthe straight-wing Stinson RCM Scale Kit Year SR-6 Reliant flies extremely well 40 Bobs 2000-foot elevation requires full power water takeoffs floats cruises half-throttle Smooth stable flies better Bob trainer hes meddled wheels 10 x 6 wide Zinger has reached 1000 feet 30 sec has measured have 2000 ft/min climb rate using 10% nitro Weight is6 lb under6ft span Like author Bob considers himself per petual novice test pilot built sample has 8000 hours 3000 aerobatics hands model does big ship could dolike inverted floats spins snaps added wing flaps SR-6 Bob built side-slips short-field landings virtually no roll-out Going over kit son Mike impressed structural design quality cutting balsa ply parts Out context Bob flew 283 missions 10th Air Force China Continued page 114 110 Model Aviation K61 R/C uffler$13995 Including wruw .r call mar lnaomation RJL INOUSTRIESePO BOX 5654PASADENA CA 91107 chilly day guys critiqued test Stinson Voyager Realistic Models Theyre Bob Beckman Bill Winter Clarence ErIIcnIne latter engineering-type test pilot aerobatics flier gets away Ace Service Center Despite trio coming up some points forthe designer Les Putnam check its greatairplane mad building spree Leswhipped outtwo planes within month suit testy trios nit picking Right Les Putnam two models frame stage built trios request colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507
Edition: Model Aviation - 1981/06
Page Numbers: 16, 17, 18, 108, 110, 114
1 jtkerh JOURNEY center earth years can remember ingenious modelers have toying camera planes long before modern miniature aircraft people used kites support cameras high air novelty first aerial photography using RCjobs has demonstrated scientific worth public stunning variety ways can make money Aerial model photography richly rewarding anyone combines twin hobbies photography RC flying especially meaningful business-like objectives coordinated few have put together Bob Munn Orem UT As read probably will off archaeological digs Greece North Africa might Out capturing film some local ruin spanking new shopping center What really drives lenswizards like Hux Peter Miller Bob Munn gap perspectives between tall ladders low-flying normal aircraft interesting photographers Munn tells us Hawk eye RC miniature aircraft carrying sophis ticated Nikon 35mm still-camera equipment can capture images would otherwise go unappreciated Operating alti tudes low 20 feet high 1000 making during single flight both vertical areasearch oblique exposures varying altitudes ranges Hawkeye can provide fresh perspec tives often reveal interesting relationships between subject surroundings well new aspects subject itself Hawkeye has wide variety applications Bob continues Business industrial location publicity photographs different angle real estate survey sales programs advertising materials variety forms satisfaction personal objectives among system useful nature photography well construction archaeology periodic photography kind produces useful interesting documentation progress well demonstrating relationship site sur roundings Bobs business aircraft gets airborne less 75 feet requires 150 feet smooth clear space landing due sheer inertia 20-lb aircraft moving 30 mph operates off average rural dirt road Ideal large paved parking lot smooth grass playing field free obstructions opposite ends Fuel lasts 20 minutes camera operates speeds up four exposures second typical flight produces 30-36 B&W color negativesof 60-70% will useful Now back Bob Top quality images suitable full-page Top Heinz Koerner electric twin Par tenaviaright Scale-like Quad Middle 55-in 73-oz Partenavia super flierit really moves says Heinz Carries 12 12 Ah cells 495 sq wing area Above Quad fourAstro02sflies bycan loopfrom level flight Extended cruise achieved switching off two motors text magazine presentation produced Detail de pends large part lens-to-object distance high-altitude vertical area photo covering over 1000 linear feet ground will have detail taken lower altitude covering much smaller area Because moving platform cannot use slow super-finegrain films material ASA rating 100 will reproduce excellent results under normal lighting conditions using B&W negative material working remote locations film can processed spot negatives can assessed additional flights made necessary obtain desired results What for-hire missions Objectives relate primarily production images particular interest high quality thorough discussion kind images desired specific flight essential survey subject its relationship light sources 16 Model Aviation 9 Bill Wi ruiuing exquisite ano greatimying ojinsun SR-6 top Bob Smurthwaite G-S Products WW II veteran also flew 600 combat hours Chennault lower pic hes posed pile Engelman spruce Winter using /4-scale Vagabond Text has details fine wood Bob has spent life around lumbering sawmills Hes willing supply big-plane builders specia en Shipps Up,..- rubber-powered twin 23-in span didnt go scale 3-in props too small So lower pic two nosesscale left single wide nose grafted ROG wing tail removed subject individual negotiations project packages costs based number type acceptable images produced necessarily number flights required produce Authors Note legitimate firms writing company letterheads Munn has typical portfolio available instruction Ad dress him care Model Aviation nearby area cost project can range considerably since variables involved Bob ex plains As starting point flight producing 30-36 exposures type film conducted under average conditions would cost about hundred dollars would include visit survey discussion operational flight second visit processing delivery slide negative material B&W contact After finish -scale Piper Vagabond sheet furnished other prints services etc big 1981/82 winter project will electric 4involve additional costs engined Constellation confess long un purchaser obtains one-time use rights requited love affair Connie having materials produced otherwise remain witnessed quiet magic Srulls 6-ft Spitfire property operator Exclusive rights published MA very much lightened over prototype might say passion Connie rekindled am regular correspondence Bob Boucher Mitch Polling sometimes calls Bob Kopski innovative genius Heinz Koerner Bob Boucher example has provided laborious notes combination size motor makes belt-drive direct along loadings plane sizes performance batteries etc Some combinations job Superman Convairsome spectacular beyond dreams might go four direct-drive 075s about 7-ft span excites please wait because youll need see essential frame techJune1981 17 Above Bob Munn wing hand shows off Hawkeye camera plane carries Nikon sophisticated paying aerial photog raphy assignments pic taken Utah Valley Aeromodelers field Provo UT right two shots Bobs handiwork upper picture taken straight down about 150-ft altitude what remains early American building near Goshen UT site explored Brigham Young University lower view main taxiway Provo Air port very busy lightplane facilityaltitude Hawkeye picture also about 150 feet niquesleast asked him summary questions last years Electric Fly year Sept 20and answers hit jackpot Heinz rain date Sept 27 Bob Kopski 25 West End Comment Electric good gliders Dr Landsdale PA 19446 Koerner found visit-Answer aerobatics twin 075 ing modelers comments interesting say the22-oz wing loading proved otherwise Comment flying time short zoom across sky 2 minutes wait until battery charged again Answer Kopski built fast acrobatic plane semi-symmetrical airfoil Astro 108 x6 prop 1212 Ahcells Running time 6-7 mm depending aero batics have 02-powered glider four 12 Ah cells 6 minutes running time Gross 24 oz area 360 squares three Ace Midget servos Twenty-minute flights back yard com mon depending lift fly day 20mm waits use three battery packs planes Packs easy remove through hatch canopy charge use 115 Ah marine battery powers 28-lb-thrust trolling motor another good electric combination also have two Astro Rapid Chargers way field charge two batteries field install battery charging third exchange charged battery discharged Rotating batteries permits steady all-day flying also rapid-charge Rx Tx batteries Author Have read directions advising against charging car battery engine running suppose Heinz doesnt way Comment tried electric after 10 flights battery failed bought another went under after eight flights Too expensive. Answer Nicad battery takes less charge cold Warms up first flight takes good charge second time During second flight battery warms up After several charge/discharge cycles battery hot can damaged Provide good cooling Venting holes Astro cases enough such heavy use Open up consider ably battery feels too hot cool small fan before during charging Dont throw damaged pack away usually bad cell Measure voltage across cell help 5-ohm load resistor Bad cell drops faster good Replace bad cell dont short out battery because can start fire burn hands Author Spitfire have pack supported tabs very well exposed cooling does get hot touch warm. content wait recharge because have other models fly Comment will take off grass field Answer Small models will Author True gas too Spitfire takes off beautiful realism grass Most light wingloading jobs geared motors geared 15 Spit take off easily No problem Twin 15 either 25 need light wing loading 10 x 4 prop Author Spitfire has 14-oz loading guys call gross high tell us will perform brilliantly geared 25 Heinz has flown 24-oz loading Comment Have electric left home Im good have glider car never flew contest Answer fun-fly contest present few pix Heinz remarkable planes miscellaneous comments Quad experimental started twin 05 now four 02s Scale Flight system wired four 12 Ah cells power two inboard motors four 12 Ah cells two outboards Maintains level flight turns two motors four will loop Out straight flight running time 4 mm Cooling provided through hole windshield fuselage bottom Author Vent position type important vent Spit through open cockpit canopy Motor cow ling made toilet paper rolls Span 61 flat bottom 460 squares gross 52 oz 4-channel Partenavia has 55-in span 495 squares gross 73 oz Two cellstotal 12 12 Ah cells Really moves Plans better looking Continued page 108 18 Model Aviation joehe6eqsute.and exfe#zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 KIORITZ Deep Fins Optimum Cooling 21/4 Flywheel Small Magneto 1 5/am Six Bo Aluminum Hub Endorsed Don Godfrey Phone 607 722-1765 Pre-Drilled Props Available Ask About Custom Built KIORITZ Engines Carb Needles &Throttle Accessible Running Points Sealed Rear Housing $189 Pre-Paid Orders Pay Shipping Dealer Inquiries Welcome Year Limited Warranty Safety Preston Continued page 13 could have avoided cool refreshing prior takeoff FAA has strict rules about drinking flying full-scale ones shouldnt close months column would like say pleased learn AMA Executive Council approved formation Safety Committee its last meeting January 31 have asked member committee have accepted Others represent ing different facets hobby have also asked until hear has accepted will mention names Most mail subject Safety Committee has come readers very much favor idea BALSA SHEETS 4x48xr/1649 4x48x3A3252 4x48x%62 4x48x3/is74 4x48x90 4x48x1/2108 6x48x/r74 6x48x3As278 6x48x/s93 6x48x3/is111 6x48x135 6x48x162 PLYWOOD 6x48x1/as125 6x48x/16136 6x48x3/2175 6x48x185 6x48x3/is240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 ENGINES BY GIBBS HOBBY & RESEARCH Original Developer Factory Trained Authorized Master Service Dealer SPECIFICATIONS 242 Cu 397CC 32 HP 8000 rpm Weight 61/2 lb Ball Bearings Crank Caged Rollers Rod Piston Pin Walbro Pump Garb 3 Ring Piston GIBBS HOBBY & RESEARCH 6195 HilIfield StNW N CANTON OHIO 44720 Phone216499-8854 After6 OOPMJ Accept Visa & Master Card Only letter voiced objectionon grounds would generate unenforceable regulations Such regulations could cause rise price certain hobby products no increase safety same letter suggested A committee sole purpose education might useful effective agree goals Safety Committee should educate modelers following safe practices dont feel should sole aim committee Show Team members generally upset what believed hasty action part Executive Council its overall ban use pyrotechnics model airshows ban has now replaced operating guidelines use pyrotechnics airshows believe issues such type things Safety Committee should handle As happens Air Show team member has asked sit committee Another issue believe should referred Safety Committee concerns new rules FAI Pylon Racing class F3D bulk rules published Bill Hagers column April issue MA However understand rules also stipulate on-course officials competitors must wear crash helmet chin strap rules also state helmet must able wit hstand impact ofa flying Pylon model No suggesting Safety Committee should conduct tests live volunteers determine helments currently market will meet requirement What suggest committee come up workable interpretation require ment number different safety standards helmets already existence suggest committee should determine would result helmets come closest fulfilling spirit FAI require ment Whether course officials competitors FAI Pylon races held US must wear approved helmet another issue would also need resolution Any comments Till next month have safe John Preston c/o ModelAviation 815 Fifieenth St N W Washington DC 20005 Fun/Winter Continued page 18 wing Quad Twin 15 grass field takeoffs Heinz tells us instead dropping resistor Spit cruise power switches off two four motors Way go Will Connie No power loss added drain extended cruise will possible Hoping 10 minutes Lots guysbut thats month September 5-7 last European Champion ships F3E Electro Flight held Amay Belgium 66 entrants flew official FAI rules become effective January 1 1983 AMA rule book may have refer book follow discus sion However European Championships Class F3B Stand-Off Scale also flown rules AMA bookapparently pro visional experimental rules F3B cable launch replaced 60sec motor run following tasks completed within 15 minutes speed dura tion precision landing Also provisional pylon race four models around three pylons two 180-meter legs 40-meter base leg race consisting 10 laps Youll have forgive rambling because post-contest booklet fragmented four languages moment have AMA copy illustration pattem type event alas well have leave later Since official rules F3E AMA rule book include flight diagram weve redrawn contest book gives some indication state-of-the-art Europe some rather wild things have going trickle information reaching country Bear mind FAI rules permit up 2325 sq area 11-lb weight permissible loading between 393 2459 oz/sq ft Some resultant flying power houses mind boggling carefully read caption under diagram youll find impli cations electric give task trythere could World Champs some near-future day 108 Model Aviation THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly Slow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9%x 12 high $34 9 5 dealer postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112 Windsor CA 95492 new problems get sucked improvements lead on Dave Hendersons motivations mixed also wanted something different doesnt surprise us Golly whip out same thing dozens Combat can chain bench Daves just-for-the-fun-of-it thing sparked idea could get motor weight back far enough turn ratio would increase surprisingly ended up 5 oz nose weight flies shows promise competitive Fast Any advantage may underscores may three times have lost another problem spraybar directly over lower wing So forestall possible burning added section aluminum under spraybar next Bi-Bat will have nose extended seems scotch original brainstorm knows what strange craft might drawing shows one-inch nose extension plywood center section will reduced weight has mixed emotions mentions flies like dog compared topranking ships yet says does have good perform ance feels weight disadvantage can overcome Dave thinks Combat brethren would interested cut-and-try experi mentsso chap wonderful RC Stinson floats Bob Smurthwaite gentleman simply must meet CL fliers know 3-line control system best Carrier kits dont see system around becasue became disgusted jobbers zero big money makersthat RC couldnt beat would join Stinson equally lovely Howard sometimes see advertised first result have career-man son armament deep Stinson putting together Silver 7 kit itthe straight-wing Stinson RCM Scale Kit Year SR-6 Reliant flies extremely well 40 Bobs 2000-foot elevation requires full power water takeoffs floats cruises half-throttle Smooth stable flies better Bob trainer hes meddled wheels 10 x 6 wide Zinger has reached 1000 feet 30 sec has measured have 2000 ft/min climb rate using 10% nitro Weight is6 lb under6ft span Like author Bob considers himself per petual novice test pilot built sample has 8000 hours 3000 aerobatics hands model does big ship could dolike inverted floats spins snaps added wing flaps SR-6 Bob built side-slips short-field landings virtually no roll-out Going over kit son Mike impressed structural design quality cutting balsa ply parts Out context Bob flew 283 missions 10th Air Force China Continued page 114 110 Model Aviation K61 R/C uffler$13995 Including wruw .r call mar lnaomation RJL INOUSTRIESePO BOX 5654PASADENA CA 91107 chilly day guys critiqued test Stinson Voyager Realistic Models Theyre Bob Beckman Bill Winter Clarence ErIIcnIne latter engineering-type test pilot aerobatics flier gets away Ace Service Center Despite trio coming up some points forthe designer Les Putnam check its greatairplane mad building spree Leswhipped outtwo planes within month suit testy trios nit picking Right Les Putnam two models frame stage built trios request colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507
Edition: Model Aviation - 1981/06
Page Numbers: 16, 17, 18, 108, 110, 114
1 jtkerh JOURNEY center earth years can remember ingenious modelers have toying camera planes long before modern miniature aircraft people used kites support cameras high air novelty first aerial photography using RCjobs has demonstrated scientific worth public stunning variety ways can make money Aerial model photography richly rewarding anyone combines twin hobbies photography RC flying especially meaningful business-like objectives coordinated few have put together Bob Munn Orem UT As read probably will off archaeological digs Greece North Africa might Out capturing film some local ruin spanking new shopping center What really drives lenswizards like Hux Peter Miller Bob Munn gap perspectives between tall ladders low-flying normal aircraft interesting photographers Munn tells us Hawk eye RC miniature aircraft carrying sophis ticated Nikon 35mm still-camera equipment can capture images would otherwise go unappreciated Operating alti tudes low 20 feet high 1000 making during single flight both vertical areasearch oblique exposures varying altitudes ranges Hawkeye can provide fresh perspec tives often reveal interesting relationships between subject surroundings well new aspects subject itself Hawkeye has wide variety applications Bob continues Business industrial location publicity photographs different angle real estate survey sales programs advertising materials variety forms satisfaction personal objectives among system useful nature photography well construction archaeology periodic photography kind produces useful interesting documentation progress well demonstrating relationship site sur roundings Bobs business aircraft gets airborne less 75 feet requires 150 feet smooth clear space landing due sheer inertia 20-lb aircraft moving 30 mph operates off average rural dirt road Ideal large paved parking lot smooth grass playing field free obstructions opposite ends Fuel lasts 20 minutes camera operates speeds up four exposures second typical flight produces 30-36 B&W color negativesof 60-70% will useful Now back Bob Top quality images suitable full-page Top Heinz Koerner electric twin Par tenaviaright Scale-like Quad Middle 55-in 73-oz Partenavia super flierit really moves says Heinz Carries 12 12 Ah cells 495 sq wing area Above Quad fourAstro02sflies bycan loopfrom level flight Extended cruise achieved switching off two motors text magazine presentation produced Detail de pends large part lens-to-object distance high-altitude vertical area photo covering over 1000 linear feet ground will have detail taken lower altitude covering much smaller area Because moving platform cannot use slow super-finegrain films material ASA rating 100 will reproduce excellent results under normal lighting conditions using B&W negative material working remote locations film can processed spot negatives can assessed additional flights made necessary obtain desired results What for-hire missions Objectives relate primarily production images particular interest high quality thorough discussion kind images desired specific flight essential survey subject its relationship light sources 16 Model Aviation 9 Bill Wi ruiuing exquisite ano greatimying ojinsun SR-6 top Bob Smurthwaite G-S Products WW II veteran also flew 600 combat hours Chennault lower pic hes posed pile Engelman spruce Winter using /4-scale Vagabond Text has details fine wood Bob has spent life around lumbering sawmills Hes willing supply big-plane builders specia en Shipps Up,..- rubber-powered twin 23-in span didnt go scale 3-in props too small So lower pic two nosesscale left single wide nose grafted ROG wing tail removed subject individual negotiations project packages costs based number type acceptable images produced necessarily number flights required produce Authors Note legitimate firms writing company letterheads Munn has typical portfolio available instruction Ad dress him care Model Aviation nearby area cost project can range considerably since variables involved Bob ex plains As starting point flight producing 30-36 exposures type film conducted under average conditions would cost about hundred dollars would include visit survey discussion operational flight second visit processing delivery slide negative material B&W contact After finish -scale Piper Vagabond sheet furnished other prints services etc big 1981/82 winter project will electric 4involve additional costs engined Constellation confess long un purchaser obtains one-time use rights requited love affair Connie having materials produced otherwise remain witnessed quiet magic Srulls 6-ft Spitfire property operator Exclusive rights published MA very much lightened over prototype might say passion Connie rekindled am regular correspondence Bob Boucher Mitch Polling sometimes calls Bob Kopski innovative genius Heinz Koerner Bob Boucher example has provided laborious notes combination size motor makes belt-drive direct along loadings plane sizes performance batteries etc Some combinations job Superman Convairsome spectacular beyond dreams might go four direct-drive 075s about 7-ft span excites please wait because youll need see essential frame techJune1981 17 Above Bob Munn wing hand shows off Hawkeye camera plane carries Nikon sophisticated paying aerial photog raphy assignments pic taken Utah Valley Aeromodelers field Provo UT right two shots Bobs handiwork upper picture taken straight down about 150-ft altitude what remains early American building near Goshen UT site explored Brigham Young University lower view main taxiway Provo Air port very busy lightplane facilityaltitude Hawkeye picture also about 150 feet niquesleast asked him summary questions last years Electric Fly year Sept 20and answers hit jackpot Heinz rain date Sept 27 Bob Kopski 25 West End Comment Electric good gliders Dr Landsdale PA 19446 Koerner found visit-Answer aerobatics twin 075 ing modelers comments interesting say the22-oz wing loading proved otherwise Comment flying time short zoom across sky 2 minutes wait until battery charged again Answer Kopski built fast acrobatic plane semi-symmetrical airfoil Astro 108 x6 prop 1212 Ahcells Running time 6-7 mm depending aero batics have 02-powered glider four 12 Ah cells 6 minutes running time Gross 24 oz area 360 squares three Ace Midget servos Twenty-minute flights back yard com mon depending lift fly day 20mm waits use three battery packs planes Packs easy remove through hatch canopy charge use 115 Ah marine battery powers 28-lb-thrust trolling motor another good electric combination also have two Astro Rapid Chargers way field charge two batteries field install battery charging third exchange charged battery discharged Rotating batteries permits steady all-day flying also rapid-charge Rx Tx batteries Author Have read directions advising against charging car battery engine running suppose Heinz doesnt way Comment tried electric after 10 flights battery failed bought another went under after eight flights Too expensive. Answer Nicad battery takes less charge cold Warms up first flight takes good charge second time During second flight battery warms up After several charge/discharge cycles battery hot can damaged Provide good cooling Venting holes Astro cases enough such heavy use Open up consider ably battery feels too hot cool small fan before during charging Dont throw damaged pack away usually bad cell Measure voltage across cell help 5-ohm load resistor Bad cell drops faster good Replace bad cell dont short out battery because can start fire burn hands Author Spitfire have pack supported tabs very well exposed cooling does get hot touch warm. content wait recharge because have other models fly Comment will take off grass field Answer Small models will Author True gas too Spitfire takes off beautiful realism grass Most light wingloading jobs geared motors geared 15 Spit take off easily No problem Twin 15 either 25 need light wing loading 10 x 4 prop Author Spitfire has 14-oz loading guys call gross high tell us will perform brilliantly geared 25 Heinz has flown 24-oz loading Comment Have electric left home Im good have glider car never flew contest Answer fun-fly contest present few pix Heinz remarkable planes miscellaneous comments Quad experimental started twin 05 now four 02s Scale Flight system wired four 12 Ah cells power two inboard motors four 12 Ah cells two outboards Maintains level flight turns two motors four will loop Out straight flight running time 4 mm Cooling provided through hole windshield fuselage bottom Author Vent position type important vent Spit through open cockpit canopy Motor cow ling made toilet paper rolls Span 61 flat bottom 460 squares gross 52 oz 4-channel Partenavia has 55-in span 495 squares gross 73 oz Two cellstotal 12 12 Ah cells Really moves Plans better looking Continued page 108 18 Model Aviation joehe6eqsute.and exfe#zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 KIORITZ Deep Fins Optimum Cooling 21/4 Flywheel Small Magneto 1 5/am Six Bo Aluminum Hub Endorsed Don Godfrey Phone 607 722-1765 Pre-Drilled Props Available Ask About Custom Built KIORITZ Engines Carb Needles &Throttle Accessible Running Points Sealed Rear Housing $189 Pre-Paid Orders Pay Shipping Dealer Inquiries Welcome Year Limited Warranty Safety Preston Continued page 13 could have avoided cool refreshing prior takeoff FAA has strict rules about drinking flying full-scale ones shouldnt close months column would like say pleased learn AMA Executive Council approved formation Safety Committee its last meeting January 31 have asked member committee have accepted Others represent ing different facets hobby have also asked until hear has accepted will mention names Most mail subject Safety Committee has come readers very much favor idea BALSA SHEETS 4x48xr/1649 4x48x3A3252 4x48x%62 4x48x3/is74 4x48x90 4x48x1/2108 6x48x/r74 6x48x3As278 6x48x/s93 6x48x3/is111 6x48x135 6x48x162 PLYWOOD 6x48x1/as125 6x48x/16136 6x48x3/2175 6x48x185 6x48x3/is240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 ENGINES BY GIBBS HOBBY & RESEARCH Original Developer Factory Trained Authorized Master Service Dealer SPECIFICATIONS 242 Cu 397CC 32 HP 8000 rpm Weight 61/2 lb Ball Bearings Crank Caged Rollers Rod Piston Pin Walbro Pump Garb 3 Ring Piston GIBBS HOBBY & RESEARCH 6195 HilIfield StNW N CANTON OHIO 44720 Phone216499-8854 After6 OOPMJ Accept Visa & Master Card Only letter voiced objectionon grounds would generate unenforceable regulations Such regulations could cause rise price certain hobby products no increase safety same letter suggested A committee sole purpose education might useful effective agree goals Safety Committee should educate modelers following safe practices dont feel should sole aim committee Show Team members generally upset what believed hasty action part Executive Council its overall ban use pyrotechnics model airshows ban has now replaced operating guidelines use pyrotechnics airshows believe issues such type things Safety Committee should handle As happens Air Show team member has asked sit committee Another issue believe should referred Safety Committee concerns new rules FAI Pylon Racing class F3D bulk rules published Bill Hagers column April issue MA However understand rules also stipulate on-course officials competitors must wear crash helmet chin strap rules also state helmet must able wit hstand impact ofa flying Pylon model No suggesting Safety Committee should conduct tests live volunteers determine helments currently market will meet requirement What suggest committee come up workable interpretation require ment number different safety standards helmets already existence suggest committee should determine would result helmets come closest fulfilling spirit FAI require ment Whether course officials competitors FAI Pylon races held US must wear approved helmet another issue would also need resolution Any comments Till next month have safe John Preston c/o ModelAviation 815 Fifieenth St N W Washington DC 20005 Fun/Winter Continued page 18 wing Quad Twin 15 grass field takeoffs Heinz tells us instead dropping resistor Spit cruise power switches off two four motors Way go Will Connie No power loss added drain extended cruise will possible Hoping 10 minutes Lots guysbut thats month September 5-7 last European Champion ships F3E Electro Flight held Amay Belgium 66 entrants flew official FAI rules become effective January 1 1983 AMA rule book may have refer book follow discus sion However European Championships Class F3B Stand-Off Scale also flown rules AMA bookapparently pro visional experimental rules F3B cable launch replaced 60sec motor run following tasks completed within 15 minutes speed dura tion precision landing Also provisional pylon race four models around three pylons two 180-meter legs 40-meter base leg race consisting 10 laps Youll have forgive rambling because post-contest booklet fragmented four languages moment have AMA copy illustration pattem type event alas well have leave later Since official rules F3E AMA rule book include flight diagram weve redrawn contest book gives some indication state-of-the-art Europe some rather wild things have going trickle information reaching country Bear mind FAI rules permit up 2325 sq area 11-lb weight permissible loading between 393 2459 oz/sq ft Some resultant flying power houses mind boggling carefully read caption under diagram youll find impli cations electric give task trythere could World Champs some near-future day 108 Model Aviation THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly Slow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9%x 12 high $34 9 5 dealer postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112 Windsor CA 95492 new problems get sucked improvements lead on Dave Hendersons motivations mixed also wanted something different doesnt surprise us Golly whip out same thing dozens Combat can chain bench Daves just-for-the-fun-of-it thing sparked idea could get motor weight back far enough turn ratio would increase surprisingly ended up 5 oz nose weight flies shows promise competitive Fast Any advantage may underscores may three times have lost another problem spraybar directly over lower wing So forestall possible burning added section aluminum under spraybar next Bi-Bat will have nose extended seems scotch original brainstorm knows what strange craft might drawing shows one-inch nose extension plywood center section will reduced weight has mixed emotions mentions flies like dog compared topranking ships yet says does have good perform ance feels weight disadvantage can overcome Dave thinks Combat brethren would interested cut-and-try experi mentsso chap wonderful RC Stinson floats Bob Smurthwaite gentleman simply must meet CL fliers know 3-line control system best Carrier kits dont see system around becasue became disgusted jobbers zero big money makersthat RC couldnt beat would join Stinson equally lovely Howard sometimes see advertised first result have career-man son armament deep Stinson putting together Silver 7 kit itthe straight-wing Stinson RCM Scale Kit Year SR-6 Reliant flies extremely well 40 Bobs 2000-foot elevation requires full power water takeoffs floats cruises half-throttle Smooth stable flies better Bob trainer hes meddled wheels 10 x 6 wide Zinger has reached 1000 feet 30 sec has measured have 2000 ft/min climb rate using 10% nitro Weight is6 lb under6ft span Like author Bob considers himself per petual novice test pilot built sample has 8000 hours 3000 aerobatics hands model does big ship could dolike inverted floats spins snaps added wing flaps SR-6 Bob built side-slips short-field landings virtually no roll-out Going over kit son Mike impressed structural design quality cutting balsa ply parts Out context Bob flew 283 missions 10th Air Force China Continued page 114 110 Model Aviation K61 R/C uffler$13995 Including wruw .r call mar lnaomation RJL INOUSTRIESePO BOX 5654PASADENA CA 91107 chilly day guys critiqued test Stinson Voyager Realistic Models Theyre Bob Beckman Bill Winter Clarence ErIIcnIne latter engineering-type test pilot aerobatics flier gets away Ace Service Center Despite trio coming up some points forthe designer Les Putnam check its greatairplane mad building spree Leswhipped outtwo planes within month suit testy trios nit picking Right Les Putnam two models frame stage built trios request colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507