C RNAL-COMBUSTION ENGINES arent piston-type power plants useful model aircraft flying Years before first gas engines came market compressed air motors powered model airplane Theyre cailed motors rather engines because like electric motors compressed-gas power plants obtain motive power extemal stored energy sources fact between Lindberghs transatlantic flight onset Great Depression US companies made compressed-air motors model airplanes manufacturers glow engines America today best pre-1930 motors Hoosier Whirlwind threecylinder design Bert Pond AMAs founders Except its steel crankshaft aiuminum connecting rods 1929 Whirlwind made brass bore stroke 375 gave total displacement 12 cubic inches rubber-power-type high-pitch propellers nine 14 inches diameter flew Free flight models large six feet span weighing much 20 ounces air supply powering compressed air motor such Whirlwind contained long cylindrical tank made shim brass typical diameter three inches length two feet air tank dimensions very strongly influenced design compressed-air model airplanes still today Interest early power plants resurfaced couple decades ago modelers developed new better ways make air tanks first aluminum beverage cans joined end-to-end some bold experimenter discovered newly-developed plastic soft drink bottles worked nicely compressed air tanks used pair one-liter bottles supply air 1929 Hoosier Whirlwind powered singlechannel RC model few years ago Bert Pond retumed compressed-air scene 1980s importing extraordinary nearly-all-plastic compressed-air motor Italy Called Z-Motor its displacement 04 cubic inches spins 7-inch-diameter high-pitch prop sport-type glow engine speeds one-liter soft drink bottle air tank pressurized 160 psi Z 68 Model Aviation e Wagner Italian-made nearly all-plastic compressed-air motor offers real change pace model fliers nlm W N NROW JUNIOR MOTo IN 9 IOk e tflIII MISI A~rI4I ampus A-23 CO2 made ideal power plant Free Flight models Henry Pasquet flies RC Hoosier Whirlwind compressed-air motor adequately powers lightweight five-footspan rudder-only RC model 3 z C ow SW CD r m-— m~5 mm U - am~-4 m w~cT 3 ii WmUO~U U m ~ CDI 1D Eu. 0-nOg mIS! 3 CDD cnaCm6U0 _ OC CUa -Ia CD WI 0-c 0 - 0 o c000oE8n 00 2-0 c-Cc 0-0 00C CC 00 N- C -r_ -Or Co 8 8 C ri- i-ri i-I aa -I -J Co 2 m F Cr 0 C2 0 C C I, C 2 ICr Cr Cr Cr -NJ Cr Cr Cr Cr r C -NJ Cr C Cr N CD CD CD C C CD CD CD 0 CD a ci CD Cfl -tO 0 Ca 0~i C 0 a - N CD I aCDN CA CD CD CD 0 0 C 0 CV -U U 00 CCC-rNC aCOC aaNJaNJNJNJ'NJ' 0, 0 N C Cr0>, 0 C NJ C C N -flN -N -NC-N-N-N t N~CJNJOJ NJ J NJ 0 za-~aacooacooaa -N0 C C6CCN rCO CNNCNJNJCC0NJ cCCCN CC0NJNCOC0 OCCOC NNNCC NCCNNN ccNNNCNOCOCaN-C NJCNJOCC CCOOCO CCC cCaCCC CNNNNNNCNJNNCCNJ -0NNNCC0 NJNJNJCNNONJC CCCCOCCNNN-CC NN-NNN C''' NJNJNJNJCCCC0 orCCOONN~Cac0C>> C aa---aO>CO>Cfl C'C NJC-C JC-NC NJCN NJC-NC NJNJcCCCCC-N0-NC-N CCONJNJNJNJ0NJNJNJNJNN Ca C C&&CCCCCCNNC 0NJNJCNNJ CCNC NNC-NNC0-CNN-NC0NJ CC CCC CNNCCCC 0NCa-NC0NJCO CCOS NJCCCCC~NJNJgCC-NNC Cg-- gC C-NCN CCNCO.4NCCCNNJCNJNNThSU NJ--a--- OcrCorC---c--c C-cV---- CCaNNN > NJNJNJa a" CCCCNJ c--C--C__N-N-N-Na NJaNJa NJC0 -CCCC2Ci ==S0 aNJNCNJNCNJNJr0NCNJ-NNCNNJNCNCnh* CNN NJNJCNN -NNNNN-N CNJNJC rCNNNJCC NJNJNJNJCOCNNCONCNCC NNNNNNCCNNNNCNN C CC CNNCNNCNNNNNNNNNNNNNNC-NJNNNC CNJNJNJNJNN CCNNJNNJCCCCC NCNCNCNCNCNC NCN CNNNJNJNJNJ NNNJNJNJNJ--- C CNN~CNN 1-NC UCNCN N4Nr0 COCCI -CCNJCCaCCC--C CaCN--- CC NNNNNNNNCCCCNNNNNN CNN C CNNNNNNNN NNC NNCNNCNNCNNNN NNNNCNN NNNN CNCaNJC NJNJCCCC CNJNNNJNN NCCC NJCCC CNNCC-NNJNNCNN CCCNJCC CaCNJCaCNN CCCNJNJCCCNCNCC C-Cr0 0NJNN C-N ~NJNJ-N NNNNC CNN NNCCNNCNN NNNN NNNNNNNNNNNNNNNN NNNNNN C CCNN -N ALLPniutuujiiiiumiriui rnrnCNJNJ 0 CNJCCNJNJCNNNNJNNCN-NJCCNN~NN CONJCCO Na NJ CC NNJNJCCNNN CCCCC-CNCNJ ~orN C iC Zr B-8N NJ' C C N Cfl~NN NJaN08aO0a--aC N CCa~a0 NCaNJa 0 Zs~ CNNJC CON- C-~- C -n N S -NOC CCC~ OTHER SIZES AVAILABLE N-Nflh CNN -CO COocaaOCCCICCCNNNONNNJN NNJNJNJNJNJ CC CNNNNNNNN NCNNNNNNNNCCCNNNNNNNJ-NJNNNN cc C---NNC--NN N CCCcca CNNCOcOrNEccaCNNNNcC NCCCC0C CICCNCNCNNNNCII NJCCC-CCNNCCNNNJCNN aNJCNa CCN C CNNNNNNNNNN CCCCCCCNN CCCCCNCC CCCNNCCCNNCC COZNNNNNNCC- CONNJCNNNCCCCC NJNNC -NCC Cl CD V CD 2 CD 0 0 -J -L Z-Power System inflation valve incredibly simple spring-actuated air valve atop piston represents major design breakthrough type power plant No lubrication needed recommended fact oils will soften Z-Motors plastic parts make unrunnable far prevalent compressed-air motors todays increasingly popular pressurized gas model airplane flying CO2 motors Its probably no coincidence C02powered model airplane motors first developed practical form Bill Brown same man made first practical gas engines sold aircraft modelers earliest Brown-designed CO motors marketed OK 1947 almost two years before first /2A glow plug engines came out About same size later K&B Infant OK CO2 motor simple straightforward design no significant improvement has ever made CO2 motors todays hobby market work just same way Bill Browns originals half century ago Outwardly CO2 motors look much like gas engines single-cylinder types theres piston driving crankshaft revolves crankcase also serves mount interior details differ markedly internalcombustion practice High-pressure CO2 approximately 800 psi supplied external tank cylinder head length thin metal tubing head contains tiny steel ball check valve prevents pressurized CO2 flowing cylinder Atop piston short pin CO tank pressurized before flight nothing happens motor Thats because ball check valve seals off gas flier flips prop piston reaches top its stroke pin forces bail away its seat cylinder head high-pressure gas impels piston downward bail seats again cutting off further flowand expanding CO2 above piston keeps moving until near bottom stroke uncovers set exhaust ports cylinder wail releases pressure piston momentum rotating propeller drives piston upward again ready another power stroke CO motors have fins cylinders hdJ 4-40x1/2 socket caps sell $435/i 00 alloy steel S665/1 00 stainless S750/50 aluminum fair prices sensible quantities fas teners need model building call write fax free catalog Micro Fasteners 800-892-6917 110 Hillcrest Road 908-806-4050 Flemingion Ni 08822 fax 908-788-2607 e-mail mirsf@blastnet Internet http//microfastenerscem 72 Model Aviation -VAC SYSTEM Introduting new fully automatic vacuum bagging system completely self-monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg vacuum switch stable 510 22 Hg vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vac connector Iwo Quick-lock seals 9 18 wide bagging tube 9 15 wide complete breather cloth set vacuumfor 238 V Sytem avaIoble bagging instructionsAM S7tt SAt theA Mt/ttD Mt/VISA accepted eideet add 825% lax ODoolittleDrSeinleandrotLA94571 510 352-2022 510 352-2021 L Un AnlIqUeS Military Civilian Helicopters Sailpians have wodds largest aircraft documentation collection 7000 different full color photo studies 1903-1997 35000 3-view line drawings 1998 Catolo /Guide 200 pages Canada/Mexico 11000 Only YOverseas $1500 Bob Bankas Scale Model Research 114 Yukon Avenue a Mesa CA 92626 714 979-8058 http//www ml net/ims/scale html arent cooling fins glow engines theyre heating fins Thats because highpressure CO2 passes through check valve begins expanding gets exceedingly cold Like other piston engines CO2 motors obtain power expansion gas above moving pistons heat assists expansion warmer its cylinder power CO2 motor develops problem compressed-gas motors lubrication high-pressure air CO2 powers quickly blows away nearly oil flier may put moving parts motor before starting However power plants work room temperature lightly stressed Wear rates therefore low Probably major cause motor wearout dust gets flying field attempt minimize friction between cylinder piston CO2 motors some manufacturers British Telco firm used nylon plastic pistons Though worked awhile didnt provide nearly consistent performance nor long life all-metal motors made Brown Czech-made motors designed developed Stefan Gasparin now widely-used CO2 power plants come incredible range sizes way unbelievably tiny three-cubic-millimeter 0002 cubic inches motor weighing less new dime 14-cylinder radials Gasparin CO2 motor equipped RC throttle Thats 307 cubic mm about 020 cubic inch single-cylinder motor swings seven-inch prop can power mim RC models about 120-square-inch wing area five-ounce total weight Henry Pasquet Ellsinore MO has flying RC models throttleable CO2 motor yearsand smaller motors too Though Henrys airplanes smali light theyre plenty rugged enough outdoor flying years annual SMALL Small Model Aircraft Lovers League meet Little Rock Henry shows up ever-morenumerous fleet amazing C02-powered Radio Control miniatures impressive wide variety Free Flight CO2 models flown Sunday morning Balboa Parkan suburbs model flying site near Van Nuys CA anyone needs convinced about troublefree flyability CO2 motors theres place go problematic area operating CO2 T-ON OWEN LESS HASSlE MORE FUN Dieselize Davis Diesel Its Awesome 1S4 4CUNO DAVIS MODEL PRODUCTS Up 50% Power * Same Easy Starling No Glow Plugs Runs flvice Long Scale Sound P0 Box 141 Dept MA ord CT 06460 877-1670 complete inrmation packet send $400 Icredit applied first orderl TRU-TURN now ofters very finest versatile lightweight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name U 7ent7~ eLISA PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSA TILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Z E ember 1998 75 much aircraft worth Protect investment FLIGHT ALARM 95 battery monitor & aircraft locater smooth surBuilding Board 3 Sizes pining parts available gluing together Pieces cut cross grain end wood grain makes up surface allows multiple cuts surface crumbling Board slightly flexible Price includes S & H MI residents add 6% sales tax will conform table topSony no orders outside continental U S #24 ~W#48 S 734-434-8928 LYMCOIxjvF4tA@proigycom PO Box 178Check money Milan MI 48160arderonly ano o 95db @ 6 volts pulsing alarmwith order C-TRONICS Inc PO Box 192 Ramsey NJ 07446 201-818-4289 motors fueling operation Unlike OK-made motors 1947 used heavy steel Sparkletts cylinder holder attached power plant carried during flight todays CO2s employ refillable aluminum tanks refilling somewhat art form two distinct types CO2 fills pressurizes motors tank gas Thats used short runs other method fills tank liquid C02 provides much longer more-constant-speed run time difference comes way CO2 filler supply reservoir positioned Whether thats Sparkletts capsule hand-held charger five-pound artists airbrush supply bottle supply container pointing upward during filling operation tank model gets gas fill reservoir points downward liquid CO2 charges motor tank trick lies connecting model reservoir losing pressure CO2 motors small no heavy hardware can used standard method hand-connect small male fitting connected thin tubing motor tank mating pressurized fitting charger Although CO2 pressure around 800 psi flow area fittings very small Little force needed hold charging connectors together gas leakage during operation can sometimes bother charging connectors made Bill Brown noted freedom leakage used tapered mating surfaces provided excellent sealing during charge Bill suffered stroke last year CO2 products no longer available Gasparin GMOT conneetors have straightsided mating parts prone leakage arent aligned precisely during charging operation Incidentally theres absolutely no danger anyone getting frosthitten operating CO2 model motors liquid CO2 Yeservoir remains normal air temperature Though cooling does occur during charging operation also motor running often getting cold enough form frost motor components have little mass theres no chance getting fingertip frozen CO2 motor its tank plumbing Perhaps best feature CO2 motor operation quiemess little power plants produce definite piston engine sound-but such insignificant level could probably run church bothering anyone E CATALOGS SPPS 160 Superstie Consfnicton Plans$500 SPPS 120060 Occumentabco Photos 3Vs$500 ASP Model Akcrat Construcson Pis$500 ASP Scale ro-oft Dmvtngs 3Vs$500 Add $500 Sa Air Overseas 1/5Sc WINNIE MAE 1002 Pc Wing Plans $3700 Jim Pepinos SCALE PLANS & PHOTO SERVICE 3209 Madison Ave Greensboro NC 27403 Vis CPHONE/FAX 910 2925239 LOCKHEED VEGA ElevonMixer __ ELECTRONIC MIXER elevons v-tails tlaps o spoilers Ultra-sierple aetap inatailation Rugged rnicroprovessor based design 100% electronic high eti ability Simply sonneuts between servos receiver Featuea individual semo reversing bar different mining rates allow tailor miner needs 01 model Will overdrive servos options selected simple switches Made USA ond deuigved work modern AM FM PCM radio systems Ultra-low power consumption Less radio connectors Weight 025cc Size 15 0 05 0 50 Part No OA $3095 tees connecters $3685 complete AccessorySwitch ACCESSORY SWITCH gives ability add sraioff function channel withour sacrificing chan nels ability control sems AccessorySwitch designed switch flu 30 volts up 30 amps moo power dissipation ot 300 watts Modern micrsprocessor-lrasnd design Accessory Switch very simple setup end ostalllant connect between servo receiver channel choose oft points selected simple dip switches 10w t6 ditferent values LED indicator help setup Unit automatically turns off transmitter oft Made USA end designed work AM PM PCM radio uystnms Low power consumption Less radio connector Size fSo 005s 00 Weight 12 oc Part No OU $3095 less coosector $3790 complete GlowDriver DUAL-OUTPUT SERVO REVERSER2ouwvotnooyouu~or given oldnr radios ability reverse direction ot serus pe eton maddng nwvo installation eanro 0mm coececiect Provides ho h normal end reversed output wr 0 use stan ecpensioe Y-hemess makes split elevator two-servo ailerons doable-sems rudder installation super-easy Modern micrspreceausr-bosed design tSS% electronic Reverser onry simple installlast connect between servos end receiver channel choose No setup onthing tuss withlust pIeS end forget Made USA end designed work modern AM FM end PCM radio systems Ultra-low power consumption Less radio connector Size 10 5 58 000 Weight 020cc Part No 2U $2495 less connector $2790 complete Complete systems andP 0 BOX 3129 CORPUS CHRISTI TX 78463-3129send forAdd $450 S&H otherproducto acailable for- oceu& sF0 15121 814-0803 toutd7PkIDoILvI CTFREE TX rca add planes cam avdboels sTOecnSbenlcc FAS&Ayrcn Nouns 51 21 0-5803 5% Cell enite for- details ovolcuL OruFF pnretebltlswbellnetCatalog s las September 1998 77 DuaI-UutpuT ServoReverser Piper Pawnee Use Pawnee training sport aerobatics towing gliders camera platform application requiring low wing loading large fuselage Features 2 piece fiberglass cowl 2 piece wing wood construction Photo instructions book Adjustable Engine mount box variety engine applications Transportable Unique wing joiner allows quick removal wings W IHTY PE WE NG Formerly AIRTRONICS Specialty Division 1578 Osage Street San Marcos CA 92069Phone 760-744-1553Fax 760-744-2133 Available Leading Habby Dealefs ar Contact Whyte Wings Dealer Inquiries lnvtted e-mail whytewingst4unocam Span 90 Area 1115 sq itt Weight 11 14 lbs Power 108 two-stroke 30 four-stroke ARF Disassembled model transport shown left a8a Ia E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available-P-38 P-40 F4UP-51F3F-1 Brochure $100 SASE Flight Line Toys P0 Box 3484 Springfield MO 65808
Edition: Model Aviation - 1998/09
Page Numbers: 68, 71, 72, 75, 77
C RNAL-COMBUSTION ENGINES arent piston-type power plants useful model aircraft flying Years before first gas engines came market compressed air motors powered model airplane Theyre cailed motors rather engines because like electric motors compressed-gas power plants obtain motive power extemal stored energy sources fact between Lindberghs transatlantic flight onset Great Depression US companies made compressed-air motors model airplanes manufacturers glow engines America today best pre-1930 motors Hoosier Whirlwind threecylinder design Bert Pond AMAs founders Except its steel crankshaft aiuminum connecting rods 1929 Whirlwind made brass bore stroke 375 gave total displacement 12 cubic inches rubber-power-type high-pitch propellers nine 14 inches diameter flew Free flight models large six feet span weighing much 20 ounces air supply powering compressed air motor such Whirlwind contained long cylindrical tank made shim brass typical diameter three inches length two feet air tank dimensions very strongly influenced design compressed-air model airplanes still today Interest early power plants resurfaced couple decades ago modelers developed new better ways make air tanks first aluminum beverage cans joined end-to-end some bold experimenter discovered newly-developed plastic soft drink bottles worked nicely compressed air tanks used pair one-liter bottles supply air 1929 Hoosier Whirlwind powered singlechannel RC model few years ago Bert Pond retumed compressed-air scene 1980s importing extraordinary nearly-all-plastic compressed-air motor Italy Called Z-Motor its displacement 04 cubic inches spins 7-inch-diameter high-pitch prop sport-type glow engine speeds one-liter soft drink bottle air tank pressurized 160 psi Z 68 Model Aviation e Wagner Italian-made nearly all-plastic compressed-air motor offers real change pace model fliers nlm W N NROW JUNIOR MOTo IN 9 IOk e tflIII MISI A~rI4I ampus A-23 CO2 made ideal power plant Free Flight models Henry Pasquet flies RC Hoosier Whirlwind compressed-air motor adequately powers lightweight five-footspan rudder-only RC model 3 z C ow SW CD r m-— m~5 mm U - am~-4 m w~cT 3 ii WmUO~U U m ~ CDI 1D Eu. 0-nOg mIS! 3 CDD cnaCm6U0 _ OC CUa -Ia CD WI 0-c 0 - 0 o c000oE8n 00 2-0 c-Cc 0-0 00C CC 00 N- C -r_ -Or Co 8 8 C ri- i-ri i-I aa -I -J Co 2 m F Cr 0 C2 0 C C I, C 2 ICr Cr Cr Cr -NJ Cr Cr Cr Cr r C -NJ Cr C Cr N CD CD CD C C CD CD CD 0 CD a ci CD Cfl -tO 0 Ca 0~i C 0 a - N CD I aCDN CA CD CD CD 0 0 C 0 CV -U U 00 CCC-rNC aCOC aaNJaNJNJNJ'NJ' 0, 0 N C Cr0>, 0 C NJ C C N -flN -N -NC-N-N-N t N~CJNJOJ NJ J NJ 0 za-~aacooacooaa -N0 C C6CCN rCO CNNCNJNJCC0NJ cCCCN CC0NJNCOC0 OCCOC NNNCC NCCNNN ccNNNCNOCOCaN-C NJCNJOCC CCOOCO CCC cCaCCC CNNNNNNCNJNNCCNJ -0NNNCC0 NJNJNJCNNONJC CCCCOCCNNN-CC NN-NNN C''' NJNJNJNJCCCC0 orCCOONN~Cac0C>> C aa---aO>CO>Cfl C'C NJC-C JC-NC NJCN NJC-NC NJNJcCCCCC-N0-NC-N CCONJNJNJNJ0NJNJNJNJNN Ca C C&&CCCCCCNNC 0NJNJCNNJ CCNC NNC-NNC0-CNN-NC0NJ CC CCC CNNCCCC 0NCa-NC0NJCO CCOS NJCCCCC~NJNJgCC-NNC Cg-- gC C-NCN CCNCO.4NCCCNNJCNJNNThSU NJ--a--- OcrCorC---c--c C-cV---- CCaNNN > NJNJNJa a" CCCCNJ c--C--C__N-N-N-Na NJaNJa NJC0 -CCCC2Ci ==S0 aNJNCNJNCNJNJr0NCNJ-NNCNNJNCNCnh* CNN NJNJCNN -NNNNN-N CNJNJC rCNNNJCC NJNJNJNJCOCNNCONCNCC NNNNNNCCNNNNCNN C CC CNNCNNCNNNNNNNNNNNNNNC-NJNNNC CNJNJNJNJNN CCNNJNNJCCCCC NCNCNCNCNCNC NCN CNNNJNJNJNJ NNNJNJNJNJ--- C CNN~CNN 1-NC UCNCN N4Nr0 COCCI -CCNJCCaCCC--C CaCN--- CC NNNNNNNNCCCCNNNNNN CNN C CNNNNNNNN NNC NNCNNCNNCNNNN NNNNCNN NNNN CNCaNJC NJNJCCCC CNJNNNJNN NCCC NJCCC CNNCC-NNJNNCNN CCCNJCC CaCNJCaCNN CCCNJNJCCCNCNCC C-Cr0 0NJNN C-N ~NJNJ-N NNNNC CNN NNCCNNCNN NNNN NNNNNNNNNNNNNNNN NNNNNN C CCNN -N ALLPniutuujiiiiumiriui rnrnCNJNJ 0 CNJCCNJNJCNNNNJNNCN-NJCCNN~NN CONJCCO Na NJ CC NNJNJCCNNN CCCCC-CNCNJ ~orN C iC Zr B-8N NJ' C C N Cfl~NN NJaN08aO0a--aC N CCa~a0 NCaNJa 0 Zs~ CNNJC CON- C-~- C -n N S -NOC CCC~ OTHER SIZES AVAILABLE N-Nflh CNN -CO COocaaOCCCICCCNNNONNNJN NNJNJNJNJNJ CC CNNNNNNNN NCNNNNNNNNCCCNNNNNNNJ-NJNNNN cc C---NNC--NN N CCCcca CNNCOcOrNEccaCNNNNcC NCCCC0C CICCNCNCNNNNCII NJCCC-CCNNCCNNNJCNN aNJCNa CCN C CNNNNNNNNNN CCCCCCCNN CCCCCNCC CCCNNCCCNNCC COZNNNNNNCC- CONNJCNNNCCCCC NJNNC -NCC Cl CD V CD 2 CD 0 0 -J -L Z-Power System inflation valve incredibly simple spring-actuated air valve atop piston represents major design breakthrough type power plant No lubrication needed recommended fact oils will soften Z-Motors plastic parts make unrunnable far prevalent compressed-air motors todays increasingly popular pressurized gas model airplane flying CO2 motors Its probably no coincidence C02powered model airplane motors first developed practical form Bill Brown same man made first practical gas engines sold aircraft modelers earliest Brown-designed CO motors marketed OK 1947 almost two years before first /2A glow plug engines came out About same size later K&B Infant OK CO2 motor simple straightforward design no significant improvement has ever made CO2 motors todays hobby market work just same way Bill Browns originals half century ago Outwardly CO2 motors look much like gas engines single-cylinder types theres piston driving crankshaft revolves crankcase also serves mount interior details differ markedly internalcombustion practice High-pressure CO2 approximately 800 psi supplied external tank cylinder head length thin metal tubing head contains tiny steel ball check valve prevents pressurized CO2 flowing cylinder Atop piston short pin CO tank pressurized before flight nothing happens motor Thats because ball check valve seals off gas flier flips prop piston reaches top its stroke pin forces bail away its seat cylinder head high-pressure gas impels piston downward bail seats again cutting off further flowand expanding CO2 above piston keeps moving until near bottom stroke uncovers set exhaust ports cylinder wail releases pressure piston momentum rotating propeller drives piston upward again ready another power stroke CO motors have fins cylinders hdJ 4-40x1/2 socket caps sell $435/i 00 alloy steel S665/1 00 stainless S750/50 aluminum fair prices sensible quantities fas teners need model building call write fax free catalog Micro Fasteners 800-892-6917 110 Hillcrest Road 908-806-4050 Flemingion Ni 08822 fax 908-788-2607 e-mail mirsf@blastnet Internet http//microfastenerscem 72 Model Aviation -VAC SYSTEM Introduting new fully automatic vacuum bagging system completely self-monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg vacuum switch stable 510 22 Hg vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vac connector Iwo Quick-lock seals 9 18 wide bagging tube 9 15 wide complete breather cloth set vacuumfor 238 V Sytem avaIoble bagging instructionsAM S7tt SAt theA Mt/ttD Mt/VISA accepted eideet add 825% lax ODoolittleDrSeinleandrotLA94571 510 352-2022 510 352-2021 L Un AnlIqUeS Military Civilian Helicopters Sailpians have wodds largest aircraft documentation collection 7000 different full color photo studies 1903-1997 35000 3-view line drawings 1998 Catolo /Guide 200 pages Canada/Mexico 11000 Only YOverseas $1500 Bob Bankas Scale Model Research 114 Yukon Avenue a Mesa CA 92626 714 979-8058 http//www ml net/ims/scale html arent cooling fins glow engines theyre heating fins Thats because highpressure CO2 passes through check valve begins expanding gets exceedingly cold Like other piston engines CO2 motors obtain power expansion gas above moving pistons heat assists expansion warmer its cylinder power CO2 motor develops problem compressed-gas motors lubrication high-pressure air CO2 powers quickly blows away nearly oil flier may put moving parts motor before starting However power plants work room temperature lightly stressed Wear rates therefore low Probably major cause motor wearout dust gets flying field attempt minimize friction between cylinder piston CO2 motors some manufacturers British Telco firm used nylon plastic pistons Though worked awhile didnt provide nearly consistent performance nor long life all-metal motors made Brown Czech-made motors designed developed Stefan Gasparin now widely-used CO2 power plants come incredible range sizes way unbelievably tiny three-cubic-millimeter 0002 cubic inches motor weighing less new dime 14-cylinder radials Gasparin CO2 motor equipped RC throttle Thats 307 cubic mm about 020 cubic inch single-cylinder motor swings seven-inch prop can power mim RC models about 120-square-inch wing area five-ounce total weight Henry Pasquet Ellsinore MO has flying RC models throttleable CO2 motor yearsand smaller motors too Though Henrys airplanes smali light theyre plenty rugged enough outdoor flying years annual SMALL Small Model Aircraft Lovers League meet Little Rock Henry shows up ever-morenumerous fleet amazing C02-powered Radio Control miniatures impressive wide variety Free Flight CO2 models flown Sunday morning Balboa Parkan suburbs model flying site near Van Nuys CA anyone needs convinced about troublefree flyability CO2 motors theres place go problematic area operating CO2 T-ON OWEN LESS HASSlE MORE FUN Dieselize Davis Diesel Its Awesome 1S4 4CUNO DAVIS MODEL PRODUCTS Up 50% Power * Same Easy Starling No Glow Plugs Runs flvice Long Scale Sound P0 Box 141 Dept MA ord CT 06460 877-1670 complete inrmation packet send $400 Icredit applied first orderl TRU-TURN now ofters very finest versatile lightweight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name U 7ent7~ eLISA PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSA TILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Z E ember 1998 75 much aircraft worth Protect investment FLIGHT ALARM 95 battery monitor & aircraft locater smooth surBuilding Board 3 Sizes pining parts available gluing together Pieces cut cross grain end wood grain makes up surface allows multiple cuts surface crumbling Board slightly flexible Price includes S & H MI residents add 6% sales tax will conform table topSony no orders outside continental U S #24 ~W#48 S 734-434-8928 LYMCOIxjvF4tA@proigycom PO Box 178Check money Milan MI 48160arderonly ano o 95db @ 6 volts pulsing alarmwith order C-TRONICS Inc PO Box 192 Ramsey NJ 07446 201-818-4289 motors fueling operation Unlike OK-made motors 1947 used heavy steel Sparkletts cylinder holder attached power plant carried during flight todays CO2s employ refillable aluminum tanks refilling somewhat art form two distinct types CO2 fills pressurizes motors tank gas Thats used short runs other method fills tank liquid C02 provides much longer more-constant-speed run time difference comes way CO2 filler supply reservoir positioned Whether thats Sparkletts capsule hand-held charger five-pound artists airbrush supply bottle supply container pointing upward during filling operation tank model gets gas fill reservoir points downward liquid CO2 charges motor tank trick lies connecting model reservoir losing pressure CO2 motors small no heavy hardware can used standard method hand-connect small male fitting connected thin tubing motor tank mating pressurized fitting charger Although CO2 pressure around 800 psi flow area fittings very small Little force needed hold charging connectors together gas leakage during operation can sometimes bother charging connectors made Bill Brown noted freedom leakage used tapered mating surfaces provided excellent sealing during charge Bill suffered stroke last year CO2 products no longer available Gasparin GMOT conneetors have straightsided mating parts prone leakage arent aligned precisely during charging operation Incidentally theres absolutely no danger anyone getting frosthitten operating CO2 model motors liquid CO2 Yeservoir remains normal air temperature Though cooling does occur during charging operation also motor running often getting cold enough form frost motor components have little mass theres no chance getting fingertip frozen CO2 motor its tank plumbing Perhaps best feature CO2 motor operation quiemess little power plants produce definite piston engine sound-but such insignificant level could probably run church bothering anyone E CATALOGS SPPS 160 Superstie Consfnicton Plans$500 SPPS 120060 Occumentabco Photos 3Vs$500 ASP Model Akcrat Construcson Pis$500 ASP Scale ro-oft Dmvtngs 3Vs$500 Add $500 Sa Air Overseas 1/5Sc WINNIE MAE 1002 Pc Wing Plans $3700 Jim Pepinos SCALE PLANS & PHOTO SERVICE 3209 Madison Ave Greensboro NC 27403 Vis CPHONE/FAX 910 2925239 LOCKHEED VEGA ElevonMixer __ ELECTRONIC MIXER elevons v-tails tlaps o spoilers Ultra-sierple aetap inatailation Rugged rnicroprovessor based design 100% electronic high eti ability Simply sonneuts between servos receiver Featuea individual semo reversing bar different mining rates allow tailor miner needs 01 model Will overdrive servos options selected simple switches Made USA ond deuigved work modern AM FM PCM radio systems Ultra-low power consumption Less radio connectors Weight 025cc Size 15 0 05 0 50 Part No OA $3095 tees connecters $3685 complete AccessorySwitch ACCESSORY SWITCH gives ability add sraioff function channel withour sacrificing chan nels ability control sems AccessorySwitch designed switch flu 30 volts up 30 amps moo power dissipation ot 300 watts Modern micrsprocessor-lrasnd design Accessory Switch very simple setup end ostalllant connect between servo receiver channel choose oft points selected simple dip switches 10w t6 ditferent values LED indicator help setup Unit automatically turns off transmitter oft Made USA end designed work AM PM PCM radio uystnms Low power consumption Less radio connector Size fSo 005s 00 Weight 12 oc Part No OU $3095 less coosector $3790 complete GlowDriver DUAL-OUTPUT SERVO REVERSER2ouwvotnooyouu~or given oldnr radios ability reverse direction ot serus pe eton maddng nwvo installation eanro 0mm coececiect Provides ho h normal end reversed output wr 0 use stan ecpensioe Y-hemess makes split elevator two-servo ailerons doable-sems rudder installation super-easy Modern micrspreceausr-bosed design tSS% electronic Reverser onry simple installlast connect between servos end receiver channel choose No setup onthing tuss withlust pIeS end forget Made USA end designed work modern AM FM end PCM radio systems Ultra-low power consumption Less radio connector Size 10 5 58 000 Weight 020cc Part No 2U $2495 less connector $2790 complete Complete systems andP 0 BOX 3129 CORPUS CHRISTI TX 78463-3129send forAdd $450 S&H otherproducto acailable for- oceu& sF0 15121 814-0803 toutd7PkIDoILvI CTFREE TX rca add planes cam avdboels sTOecnSbenlcc FAS&Ayrcn Nouns 51 21 0-5803 5% Cell enite for- details ovolcuL OruFF pnretebltlswbellnetCatalog s las September 1998 77 DuaI-UutpuT ServoReverser Piper Pawnee Use Pawnee training sport aerobatics towing gliders camera platform application requiring low wing loading large fuselage Features 2 piece fiberglass cowl 2 piece wing wood construction Photo instructions book Adjustable Engine mount box variety engine applications Transportable Unique wing joiner allows quick removal wings W IHTY PE WE NG Formerly AIRTRONICS Specialty Division 1578 Osage Street San Marcos CA 92069Phone 760-744-1553Fax 760-744-2133 Available Leading Habby Dealefs ar Contact Whyte Wings Dealer Inquiries lnvtted e-mail whytewingst4unocam Span 90 Area 1115 sq itt Weight 11 14 lbs Power 108 two-stroke 30 four-stroke ARF Disassembled model transport shown left a8a Ia E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available-P-38 P-40 F4UP-51F3F-1 Brochure $100 SASE Flight Line Toys P0 Box 3484 Springfield MO 65808
Edition: Model Aviation - 1998/09
Page Numbers: 68, 71, 72, 75, 77
C RNAL-COMBUSTION ENGINES arent piston-type power plants useful model aircraft flying Years before first gas engines came market compressed air motors powered model airplane Theyre cailed motors rather engines because like electric motors compressed-gas power plants obtain motive power extemal stored energy sources fact between Lindberghs transatlantic flight onset Great Depression US companies made compressed-air motors model airplanes manufacturers glow engines America today best pre-1930 motors Hoosier Whirlwind threecylinder design Bert Pond AMAs founders Except its steel crankshaft aiuminum connecting rods 1929 Whirlwind made brass bore stroke 375 gave total displacement 12 cubic inches rubber-power-type high-pitch propellers nine 14 inches diameter flew Free flight models large six feet span weighing much 20 ounces air supply powering compressed air motor such Whirlwind contained long cylindrical tank made shim brass typical diameter three inches length two feet air tank dimensions very strongly influenced design compressed-air model airplanes still today Interest early power plants resurfaced couple decades ago modelers developed new better ways make air tanks first aluminum beverage cans joined end-to-end some bold experimenter discovered newly-developed plastic soft drink bottles worked nicely compressed air tanks used pair one-liter bottles supply air 1929 Hoosier Whirlwind powered singlechannel RC model few years ago Bert Pond retumed compressed-air scene 1980s importing extraordinary nearly-all-plastic compressed-air motor Italy Called Z-Motor its displacement 04 cubic inches spins 7-inch-diameter high-pitch prop sport-type glow engine speeds one-liter soft drink bottle air tank pressurized 160 psi Z 68 Model Aviation e Wagner Italian-made nearly all-plastic compressed-air motor offers real change pace model fliers nlm W N NROW JUNIOR MOTo IN 9 IOk e tflIII MISI A~rI4I ampus A-23 CO2 made ideal power plant Free Flight models Henry Pasquet flies RC Hoosier Whirlwind compressed-air motor adequately powers lightweight five-footspan rudder-only RC model 3 z C ow SW CD r m-— m~5 mm U - am~-4 m w~cT 3 ii WmUO~U U m ~ CDI 1D Eu. 0-nOg mIS! 3 CDD cnaCm6U0 _ OC CUa -Ia CD WI 0-c 0 - 0 o c000oE8n 00 2-0 c-Cc 0-0 00C CC 00 N- C -r_ -Or Co 8 8 C ri- i-ri i-I aa -I -J Co 2 m F Cr 0 C2 0 C C I, C 2 ICr Cr Cr Cr -NJ Cr Cr Cr Cr r C -NJ Cr C Cr N CD CD CD C C CD CD CD 0 CD a ci CD Cfl -tO 0 Ca 0~i C 0 a - N CD I aCDN CA CD CD CD 0 0 C 0 CV -U U 00 CCC-rNC aCOC aaNJaNJNJNJ'NJ' 0, 0 N C Cr0>, 0 C NJ C C N -flN -N -NC-N-N-N t N~CJNJOJ NJ J NJ 0 za-~aacooacooaa -N0 C C6CCN rCO CNNCNJNJCC0NJ cCCCN CC0NJNCOC0 OCCOC NNNCC NCCNNN ccNNNCNOCOCaN-C NJCNJOCC CCOOCO CCC cCaCCC CNNNNNNCNJNNCCNJ -0NNNCC0 NJNJNJCNNONJC CCCCOCCNNN-CC NN-NNN C''' NJNJNJNJCCCC0 orCCOONN~Cac0C>> C aa---aO>CO>Cfl C'C NJC-C JC-NC NJCN NJC-NC NJNJcCCCCC-N0-NC-N CCONJNJNJNJ0NJNJNJNJNN Ca C C&&CCCCCCNNC 0NJNJCNNJ CCNC NNC-NNC0-CNN-NC0NJ CC CCC CNNCCCC 0NCa-NC0NJCO CCOS NJCCCCC~NJNJgCC-NNC Cg-- gC C-NCN CCNCO.4NCCCNNJCNJNNThSU NJ--a--- OcrCorC---c--c C-cV---- CCaNNN > NJNJNJa a" CCCCNJ c--C--C__N-N-N-Na NJaNJa NJC0 -CCCC2Ci ==S0 aNJNCNJNCNJNJr0NCNJ-NNCNNJNCNCnh* CNN NJNJCNN -NNNNN-N CNJNJC rCNNNJCC NJNJNJNJCOCNNCONCNCC NNNNNNCCNNNNCNN C CC CNNCNNCNNNNNNNNNNNNNNC-NJNNNC CNJNJNJNJNN CCNNJNNJCCCCC NCNCNCNCNCNC NCN CNNNJNJNJNJ NNNJNJNJNJ--- C CNN~CNN 1-NC UCNCN N4Nr0 COCCI -CCNJCCaCCC--C CaCN--- CC NNNNNNNNCCCCNNNNNN CNN C CNNNNNNNN NNC NNCNNCNNCNNNN NNNNCNN NNNN CNCaNJC NJNJCCCC CNJNNNJNN NCCC NJCCC CNNCC-NNJNNCNN CCCNJCC CaCNJCaCNN CCCNJNJCCCNCNCC C-Cr0 0NJNN C-N ~NJNJ-N NNNNC CNN NNCCNNCNN NNNN NNNNNNNNNNNNNNNN NNNNNN C CCNN -N ALLPniutuujiiiiumiriui rnrnCNJNJ 0 CNJCCNJNJCNNNNJNNCN-NJCCNN~NN CONJCCO Na NJ CC NNJNJCCNNN CCCCC-CNCNJ ~orN C iC Zr B-8N NJ' C C N Cfl~NN NJaN08aO0a--aC N CCa~a0 NCaNJa 0 Zs~ CNNJC CON- C-~- C -n N S -NOC CCC~ OTHER SIZES AVAILABLE N-Nflh CNN -CO COocaaOCCCICCCNNNONNNJN NNJNJNJNJNJ CC CNNNNNNNN NCNNNNNNNNCCCNNNNNNNJ-NJNNNN cc C---NNC--NN N CCCcca CNNCOcOrNEccaCNNNNcC NCCCC0C CICCNCNCNNNNCII NJCCC-CCNNCCNNNJCNN aNJCNa CCN C CNNNNNNNNNN CCCCCCCNN CCCCCNCC CCCNNCCCNNCC COZNNNNNNCC- CONNJCNNNCCCCC NJNNC -NCC Cl CD V CD 2 CD 0 0 -J -L Z-Power System inflation valve incredibly simple spring-actuated air valve atop piston represents major design breakthrough type power plant No lubrication needed recommended fact oils will soften Z-Motors plastic parts make unrunnable far prevalent compressed-air motors todays increasingly popular pressurized gas model airplane flying CO2 motors Its probably no coincidence C02powered model airplane motors first developed practical form Bill Brown same man made first practical gas engines sold aircraft modelers earliest Brown-designed CO motors marketed OK 1947 almost two years before first /2A glow plug engines came out About same size later K&B Infant OK CO2 motor simple straightforward design no significant improvement has ever made CO2 motors todays hobby market work just same way Bill Browns originals half century ago Outwardly CO2 motors look much like gas engines single-cylinder types theres piston driving crankshaft revolves crankcase also serves mount interior details differ markedly internalcombustion practice High-pressure CO2 approximately 800 psi supplied external tank cylinder head length thin metal tubing head contains tiny steel ball check valve prevents pressurized CO2 flowing cylinder Atop piston short pin CO tank pressurized before flight nothing happens motor Thats because ball check valve seals off gas flier flips prop piston reaches top its stroke pin forces bail away its seat cylinder head high-pressure gas impels piston downward bail seats again cutting off further flowand expanding CO2 above piston keeps moving until near bottom stroke uncovers set exhaust ports cylinder wail releases pressure piston momentum rotating propeller drives piston upward again ready another power stroke CO motors have fins cylinders hdJ 4-40x1/2 socket caps sell $435/i 00 alloy steel S665/1 00 stainless S750/50 aluminum fair prices sensible quantities fas teners need model building call write fax free catalog Micro Fasteners 800-892-6917 110 Hillcrest Road 908-806-4050 Flemingion Ni 08822 fax 908-788-2607 e-mail mirsf@blastnet Internet http//microfastenerscem 72 Model Aviation -VAC SYSTEM Introduting new fully automatic vacuum bagging system completely self-monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg vacuum switch stable 510 22 Hg vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vac connector Iwo Quick-lock seals 9 18 wide bagging tube 9 15 wide complete breather cloth set vacuumfor 238 V Sytem avaIoble bagging instructionsAM S7tt SAt theA Mt/ttD Mt/VISA accepted eideet add 825% lax ODoolittleDrSeinleandrotLA94571 510 352-2022 510 352-2021 L Un AnlIqUeS Military Civilian Helicopters Sailpians have wodds largest aircraft documentation collection 7000 different full color photo studies 1903-1997 35000 3-view line drawings 1998 Catolo /Guide 200 pages Canada/Mexico 11000 Only YOverseas $1500 Bob Bankas Scale Model Research 114 Yukon Avenue a Mesa CA 92626 714 979-8058 http//www ml net/ims/scale html arent cooling fins glow engines theyre heating fins Thats because highpressure CO2 passes through check valve begins expanding gets exceedingly cold Like other piston engines CO2 motors obtain power expansion gas above moving pistons heat assists expansion warmer its cylinder power CO2 motor develops problem compressed-gas motors lubrication high-pressure air CO2 powers quickly blows away nearly oil flier may put moving parts motor before starting However power plants work room temperature lightly stressed Wear rates therefore low Probably major cause motor wearout dust gets flying field attempt minimize friction between cylinder piston CO2 motors some manufacturers British Telco firm used nylon plastic pistons Though worked awhile didnt provide nearly consistent performance nor long life all-metal motors made Brown Czech-made motors designed developed Stefan Gasparin now widely-used CO2 power plants come incredible range sizes way unbelievably tiny three-cubic-millimeter 0002 cubic inches motor weighing less new dime 14-cylinder radials Gasparin CO2 motor equipped RC throttle Thats 307 cubic mm about 020 cubic inch single-cylinder motor swings seven-inch prop can power mim RC models about 120-square-inch wing area five-ounce total weight Henry Pasquet Ellsinore MO has flying RC models throttleable CO2 motor yearsand smaller motors too Though Henrys airplanes smali light theyre plenty rugged enough outdoor flying years annual SMALL Small Model Aircraft Lovers League meet Little Rock Henry shows up ever-morenumerous fleet amazing C02-powered Radio Control miniatures impressive wide variety Free Flight CO2 models flown Sunday morning Balboa Parkan suburbs model flying site near Van Nuys CA anyone needs convinced about troublefree flyability CO2 motors theres place go problematic area operating CO2 T-ON OWEN LESS HASSlE MORE FUN Dieselize Davis Diesel Its Awesome 1S4 4CUNO DAVIS MODEL PRODUCTS Up 50% Power * Same Easy Starling No Glow Plugs Runs flvice Long Scale Sound P0 Box 141 Dept MA ord CT 06460 877-1670 complete inrmation packet send $400 Icredit applied first orderl TRU-TURN now ofters very finest versatile lightweight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name U 7ent7~ eLISA PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSA TILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Z E ember 1998 75 much aircraft worth Protect investment FLIGHT ALARM 95 battery monitor & aircraft locater smooth surBuilding Board 3 Sizes pining parts available gluing together Pieces cut cross grain end wood grain makes up surface allows multiple cuts surface crumbling Board slightly flexible Price includes S & H MI residents add 6% sales tax will conform table topSony no orders outside continental U S #24 ~W#48 S 734-434-8928 LYMCOIxjvF4tA@proigycom PO Box 178Check money Milan MI 48160arderonly ano o 95db @ 6 volts pulsing alarmwith order C-TRONICS Inc PO Box 192 Ramsey NJ 07446 201-818-4289 motors fueling operation Unlike OK-made motors 1947 used heavy steel Sparkletts cylinder holder attached power plant carried during flight todays CO2s employ refillable aluminum tanks refilling somewhat art form two distinct types CO2 fills pressurizes motors tank gas Thats used short runs other method fills tank liquid C02 provides much longer more-constant-speed run time difference comes way CO2 filler supply reservoir positioned Whether thats Sparkletts capsule hand-held charger five-pound artists airbrush supply bottle supply container pointing upward during filling operation tank model gets gas fill reservoir points downward liquid CO2 charges motor tank trick lies connecting model reservoir losing pressure CO2 motors small no heavy hardware can used standard method hand-connect small male fitting connected thin tubing motor tank mating pressurized fitting charger Although CO2 pressure around 800 psi flow area fittings very small Little force needed hold charging connectors together gas leakage during operation can sometimes bother charging connectors made Bill Brown noted freedom leakage used tapered mating surfaces provided excellent sealing during charge Bill suffered stroke last year CO2 products no longer available Gasparin GMOT conneetors have straightsided mating parts prone leakage arent aligned precisely during charging operation Incidentally theres absolutely no danger anyone getting frosthitten operating CO2 model motors liquid CO2 Yeservoir remains normal air temperature Though cooling does occur during charging operation also motor running often getting cold enough form frost motor components have little mass theres no chance getting fingertip frozen CO2 motor its tank plumbing Perhaps best feature CO2 motor operation quiemess little power plants produce definite piston engine sound-but such insignificant level could probably run church bothering anyone E CATALOGS SPPS 160 Superstie Consfnicton Plans$500 SPPS 120060 Occumentabco Photos 3Vs$500 ASP Model Akcrat Construcson Pis$500 ASP Scale ro-oft Dmvtngs 3Vs$500 Add $500 Sa Air Overseas 1/5Sc WINNIE MAE 1002 Pc Wing Plans $3700 Jim Pepinos SCALE PLANS & PHOTO SERVICE 3209 Madison Ave Greensboro NC 27403 Vis CPHONE/FAX 910 2925239 LOCKHEED VEGA ElevonMixer __ ELECTRONIC MIXER elevons v-tails tlaps o spoilers Ultra-sierple aetap inatailation Rugged rnicroprovessor based design 100% electronic high eti ability Simply sonneuts between servos receiver Featuea individual semo reversing bar different mining rates allow tailor miner needs 01 model Will overdrive servos options selected simple switches Made USA ond deuigved work modern AM FM PCM radio systems Ultra-low power consumption Less radio connectors Weight 025cc Size 15 0 05 0 50 Part No OA $3095 tees connecters $3685 complete AccessorySwitch ACCESSORY SWITCH gives ability add sraioff function channel withour sacrificing chan nels ability control sems AccessorySwitch designed switch flu 30 volts up 30 amps moo power dissipation ot 300 watts Modern micrsprocessor-lrasnd design Accessory Switch very simple setup end ostalllant connect between servo receiver channel choose oft points selected simple dip switches 10w t6 ditferent values LED indicator help setup Unit automatically turns off transmitter oft Made USA end designed work AM PM PCM radio uystnms Low power consumption Less radio connector Size fSo 005s 00 Weight 12 oc Part No OU $3095 less coosector $3790 complete GlowDriver DUAL-OUTPUT SERVO REVERSER2ouwvotnooyouu~or given oldnr radios ability reverse direction ot serus pe eton maddng nwvo installation eanro 0mm coececiect Provides ho h normal end reversed output wr 0 use stan ecpensioe Y-hemess makes split elevator two-servo ailerons doable-sems rudder installation super-easy Modern micrspreceausr-bosed design tSS% electronic Reverser onry simple installlast connect between servos end receiver channel choose No setup onthing tuss withlust pIeS end forget Made USA end designed work modern AM FM end PCM radio systems Ultra-low power consumption Less radio connector Size 10 5 58 000 Weight 020cc Part No 2U $2495 less connector $2790 complete Complete systems andP 0 BOX 3129 CORPUS CHRISTI TX 78463-3129send forAdd $450 S&H otherproducto acailable for- oceu& sF0 15121 814-0803 toutd7PkIDoILvI CTFREE TX rca add planes cam avdboels sTOecnSbenlcc FAS&Ayrcn Nouns 51 21 0-5803 5% Cell enite for- details ovolcuL OruFF pnretebltlswbellnetCatalog s las September 1998 77 DuaI-UutpuT ServoReverser Piper Pawnee Use Pawnee training sport aerobatics towing gliders camera platform application requiring low wing loading large fuselage Features 2 piece fiberglass cowl 2 piece wing wood construction Photo instructions book Adjustable Engine mount box variety engine applications Transportable Unique wing joiner allows quick removal wings W IHTY PE WE NG Formerly AIRTRONICS Specialty Division 1578 Osage Street San Marcos CA 92069Phone 760-744-1553Fax 760-744-2133 Available Leading Habby Dealefs ar Contact Whyte Wings Dealer Inquiries lnvtted e-mail whytewingst4unocam Span 90 Area 1115 sq itt Weight 11 14 lbs Power 108 two-stroke 30 four-stroke ARF Disassembled model transport shown left a8a Ia E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available-P-38 P-40 F4UP-51F3F-1 Brochure $100 SASE Flight Line Toys P0 Box 3484 Springfield MO 65808
Edition: Model Aviation - 1998/09
Page Numbers: 68, 71, 72, 75, 77
C RNAL-COMBUSTION ENGINES arent piston-type power plants useful model aircraft flying Years before first gas engines came market compressed air motors powered model airplane Theyre cailed motors rather engines because like electric motors compressed-gas power plants obtain motive power extemal stored energy sources fact between Lindberghs transatlantic flight onset Great Depression US companies made compressed-air motors model airplanes manufacturers glow engines America today best pre-1930 motors Hoosier Whirlwind threecylinder design Bert Pond AMAs founders Except its steel crankshaft aiuminum connecting rods 1929 Whirlwind made brass bore stroke 375 gave total displacement 12 cubic inches rubber-power-type high-pitch propellers nine 14 inches diameter flew Free flight models large six feet span weighing much 20 ounces air supply powering compressed air motor such Whirlwind contained long cylindrical tank made shim brass typical diameter three inches length two feet air tank dimensions very strongly influenced design compressed-air model airplanes still today Interest early power plants resurfaced couple decades ago modelers developed new better ways make air tanks first aluminum beverage cans joined end-to-end some bold experimenter discovered newly-developed plastic soft drink bottles worked nicely compressed air tanks used pair one-liter bottles supply air 1929 Hoosier Whirlwind powered singlechannel RC model few years ago Bert Pond retumed compressed-air scene 1980s importing extraordinary nearly-all-plastic compressed-air motor Italy Called Z-Motor its displacement 04 cubic inches spins 7-inch-diameter high-pitch prop sport-type glow engine speeds one-liter soft drink bottle air tank pressurized 160 psi Z 68 Model Aviation e Wagner Italian-made nearly all-plastic compressed-air motor offers real change pace model fliers nlm W N NROW JUNIOR MOTo IN 9 IOk e tflIII MISI A~rI4I ampus A-23 CO2 made ideal power plant Free Flight models Henry Pasquet flies RC Hoosier Whirlwind compressed-air motor adequately powers lightweight five-footspan rudder-only RC model 3 z C ow SW CD r m-— m~5 mm U - am~-4 m w~cT 3 ii WmUO~U U m ~ CDI 1D Eu. 0-nOg mIS! 3 CDD cnaCm6U0 _ OC CUa -Ia CD WI 0-c 0 - 0 o c000oE8n 00 2-0 c-Cc 0-0 00C CC 00 N- C -r_ -Or Co 8 8 C ri- i-ri i-I aa -I -J Co 2 m F Cr 0 C2 0 C C I, C 2 ICr Cr Cr Cr -NJ Cr Cr Cr Cr r C -NJ Cr C Cr N CD CD CD C C CD CD CD 0 CD a ci CD Cfl -tO 0 Ca 0~i C 0 a - N CD I aCDN CA CD CD CD 0 0 C 0 CV -U U 00 CCC-rNC aCOC aaNJaNJNJNJ'NJ' 0, 0 N C Cr0>, 0 C NJ C C N -flN -N -NC-N-N-N t N~CJNJOJ NJ J NJ 0 za-~aacooacooaa -N0 C C6CCN rCO CNNCNJNJCC0NJ cCCCN CC0NJNCOC0 OCCOC NNNCC NCCNNN ccNNNCNOCOCaN-C NJCNJOCC CCOOCO CCC cCaCCC CNNNNNNCNJNNCCNJ -0NNNCC0 NJNJNJCNNONJC CCCCOCCNNN-CC NN-NNN C''' NJNJNJNJCCCC0 orCCOONN~Cac0C>> C aa---aO>CO>Cfl C'C NJC-C JC-NC NJCN NJC-NC NJNJcCCCCC-N0-NC-N CCONJNJNJNJ0NJNJNJNJNN Ca C C&&CCCCCCNNC 0NJNJCNNJ CCNC NNC-NNC0-CNN-NC0NJ CC CCC CNNCCCC 0NCa-NC0NJCO CCOS NJCCCCC~NJNJgCC-NNC Cg-- gC C-NCN CCNCO.4NCCCNNJCNJNNThSU NJ--a--- OcrCorC---c--c C-cV---- CCaNNN > NJNJNJa a" CCCCNJ c--C--C__N-N-N-Na NJaNJa NJC0 -CCCC2Ci ==S0 aNJNCNJNCNJNJr0NCNJ-NNCNNJNCNCnh* CNN NJNJCNN -NNNNN-N CNJNJC rCNNNJCC NJNJNJNJCOCNNCONCNCC NNNNNNCCNNNNCNN C CC CNNCNNCNNNNNNNNNNNNNNC-NJNNNC CNJNJNJNJNN CCNNJNNJCCCCC NCNCNCNCNCNC NCN CNNNJNJNJNJ NNNJNJNJNJ--- C CNN~CNN 1-NC UCNCN N4Nr0 COCCI -CCNJCCaCCC--C CaCN--- CC NNNNNNNNCCCCNNNNNN CNN C CNNNNNNNN NNC NNCNNCNNCNNNN NNNNCNN NNNN CNCaNJC NJNJCCCC CNJNNNJNN NCCC NJCCC CNNCC-NNJNNCNN CCCNJCC CaCNJCaCNN CCCNJNJCCCNCNCC C-Cr0 0NJNN C-N ~NJNJ-N NNNNC CNN NNCCNNCNN NNNN NNNNNNNNNNNNNNNN NNNNNN C CCNN -N ALLPniutuujiiiiumiriui rnrnCNJNJ 0 CNJCCNJNJCNNNNJNNCN-NJCCNN~NN CONJCCO Na NJ CC NNJNJCCNNN CCCCC-CNCNJ ~orN C iC Zr B-8N NJ' C C N Cfl~NN NJaN08aO0a--aC N CCa~a0 NCaNJa 0 Zs~ CNNJC CON- C-~- C -n N S -NOC CCC~ OTHER SIZES AVAILABLE N-Nflh CNN -CO COocaaOCCCICCCNNNONNNJN NNJNJNJNJNJ CC CNNNNNNNN NCNNNNNNNNCCCNNNNNNNJ-NJNNNN cc C---NNC--NN N CCCcca CNNCOcOrNEccaCNNNNcC NCCCC0C CICCNCNCNNNNCII NJCCC-CCNNCCNNNJCNN aNJCNa CCN C CNNNNNNNNNN CCCCCCCNN CCCCCNCC CCCNNCCCNNCC COZNNNNNNCC- CONNJCNNNCCCCC NJNNC -NCC Cl CD V CD 2 CD 0 0 -J -L Z-Power System inflation valve incredibly simple spring-actuated air valve atop piston represents major design breakthrough type power plant No lubrication needed recommended fact oils will soften Z-Motors plastic parts make unrunnable far prevalent compressed-air motors todays increasingly popular pressurized gas model airplane flying CO2 motors Its probably no coincidence C02powered model airplane motors first developed practical form Bill Brown same man made first practical gas engines sold aircraft modelers earliest Brown-designed CO motors marketed OK 1947 almost two years before first /2A glow plug engines came out About same size later K&B Infant OK CO2 motor simple straightforward design no significant improvement has ever made CO2 motors todays hobby market work just same way Bill Browns originals half century ago Outwardly CO2 motors look much like gas engines single-cylinder types theres piston driving crankshaft revolves crankcase also serves mount interior details differ markedly internalcombustion practice High-pressure CO2 approximately 800 psi supplied external tank cylinder head length thin metal tubing head contains tiny steel ball check valve prevents pressurized CO2 flowing cylinder Atop piston short pin CO tank pressurized before flight nothing happens motor Thats because ball check valve seals off gas flier flips prop piston reaches top its stroke pin forces bail away its seat cylinder head high-pressure gas impels piston downward bail seats again cutting off further flowand expanding CO2 above piston keeps moving until near bottom stroke uncovers set exhaust ports cylinder wail releases pressure piston momentum rotating propeller drives piston upward again ready another power stroke CO motors have fins cylinders hdJ 4-40x1/2 socket caps sell $435/i 00 alloy steel S665/1 00 stainless S750/50 aluminum fair prices sensible quantities fas teners need model building call write fax free catalog Micro Fasteners 800-892-6917 110 Hillcrest Road 908-806-4050 Flemingion Ni 08822 fax 908-788-2607 e-mail mirsf@blastnet Internet http//microfastenerscem 72 Model Aviation -VAC SYSTEM Introduting new fully automatic vacuum bagging system completely self-monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg vacuum switch stable 510 22 Hg vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vac connector Iwo Quick-lock seals 9 18 wide bagging tube 9 15 wide complete breather cloth set vacuumfor 238 V Sytem avaIoble bagging instructionsAM S7tt SAt theA Mt/ttD Mt/VISA accepted eideet add 825% lax ODoolittleDrSeinleandrotLA94571 510 352-2022 510 352-2021 L Un AnlIqUeS Military Civilian Helicopters Sailpians have wodds largest aircraft documentation collection 7000 different full color photo studies 1903-1997 35000 3-view line drawings 1998 Catolo /Guide 200 pages Canada/Mexico 11000 Only YOverseas $1500 Bob Bankas Scale Model Research 114 Yukon Avenue a Mesa CA 92626 714 979-8058 http//www ml net/ims/scale html arent cooling fins glow engines theyre heating fins Thats because highpressure CO2 passes through check valve begins expanding gets exceedingly cold Like other piston engines CO2 motors obtain power expansion gas above moving pistons heat assists expansion warmer its cylinder power CO2 motor develops problem compressed-gas motors lubrication high-pressure air CO2 powers quickly blows away nearly oil flier may put moving parts motor before starting However power plants work room temperature lightly stressed Wear rates therefore low Probably major cause motor wearout dust gets flying field attempt minimize friction between cylinder piston CO2 motors some manufacturers British Telco firm used nylon plastic pistons Though worked awhile didnt provide nearly consistent performance nor long life all-metal motors made Brown Czech-made motors designed developed Stefan Gasparin now widely-used CO2 power plants come incredible range sizes way unbelievably tiny three-cubic-millimeter 0002 cubic inches motor weighing less new dime 14-cylinder radials Gasparin CO2 motor equipped RC throttle Thats 307 cubic mm about 020 cubic inch single-cylinder motor swings seven-inch prop can power mim RC models about 120-square-inch wing area five-ounce total weight Henry Pasquet Ellsinore MO has flying RC models throttleable CO2 motor yearsand smaller motors too Though Henrys airplanes smali light theyre plenty rugged enough outdoor flying years annual SMALL Small Model Aircraft Lovers League meet Little Rock Henry shows up ever-morenumerous fleet amazing C02-powered Radio Control miniatures impressive wide variety Free Flight CO2 models flown Sunday morning Balboa Parkan suburbs model flying site near Van Nuys CA anyone needs convinced about troublefree flyability CO2 motors theres place go problematic area operating CO2 T-ON OWEN LESS HASSlE MORE FUN Dieselize Davis Diesel Its Awesome 1S4 4CUNO DAVIS MODEL PRODUCTS Up 50% Power * Same Easy Starling No Glow Plugs Runs flvice Long Scale Sound P0 Box 141 Dept MA ord CT 06460 877-1670 complete inrmation packet send $400 Icredit applied first orderl TRU-TURN now ofters very finest versatile lightweight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name U 7ent7~ eLISA PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSA TILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Z E ember 1998 75 much aircraft worth Protect investment FLIGHT ALARM 95 battery monitor & aircraft locater smooth surBuilding Board 3 Sizes pining parts available gluing together Pieces cut cross grain end wood grain makes up surface allows multiple cuts surface crumbling Board slightly flexible Price includes S & H MI residents add 6% sales tax will conform table topSony no orders outside continental U S #24 ~W#48 S 734-434-8928 LYMCOIxjvF4tA@proigycom PO Box 178Check money Milan MI 48160arderonly ano o 95db @ 6 volts pulsing alarmwith order C-TRONICS Inc PO Box 192 Ramsey NJ 07446 201-818-4289 motors fueling operation Unlike OK-made motors 1947 used heavy steel Sparkletts cylinder holder attached power plant carried during flight todays CO2s employ refillable aluminum tanks refilling somewhat art form two distinct types CO2 fills pressurizes motors tank gas Thats used short runs other method fills tank liquid C02 provides much longer more-constant-speed run time difference comes way CO2 filler supply reservoir positioned Whether thats Sparkletts capsule hand-held charger five-pound artists airbrush supply bottle supply container pointing upward during filling operation tank model gets gas fill reservoir points downward liquid CO2 charges motor tank trick lies connecting model reservoir losing pressure CO2 motors small no heavy hardware can used standard method hand-connect small male fitting connected thin tubing motor tank mating pressurized fitting charger Although CO2 pressure around 800 psi flow area fittings very small Little force needed hold charging connectors together gas leakage during operation can sometimes bother charging connectors made Bill Brown noted freedom leakage used tapered mating surfaces provided excellent sealing during charge Bill suffered stroke last year CO2 products no longer available Gasparin GMOT conneetors have straightsided mating parts prone leakage arent aligned precisely during charging operation Incidentally theres absolutely no danger anyone getting frosthitten operating CO2 model motors liquid CO2 Yeservoir remains normal air temperature Though cooling does occur during charging operation also motor running often getting cold enough form frost motor components have little mass theres no chance getting fingertip frozen CO2 motor its tank plumbing Perhaps best feature CO2 motor operation quiemess little power plants produce definite piston engine sound-but such insignificant level could probably run church bothering anyone E CATALOGS SPPS 160 Superstie Consfnicton Plans$500 SPPS 120060 Occumentabco Photos 3Vs$500 ASP Model Akcrat Construcson Pis$500 ASP Scale ro-oft Dmvtngs 3Vs$500 Add $500 Sa Air Overseas 1/5Sc WINNIE MAE 1002 Pc Wing Plans $3700 Jim Pepinos SCALE PLANS & PHOTO SERVICE 3209 Madison Ave Greensboro NC 27403 Vis CPHONE/FAX 910 2925239 LOCKHEED VEGA ElevonMixer __ ELECTRONIC MIXER elevons v-tails tlaps o spoilers Ultra-sierple aetap inatailation Rugged rnicroprovessor based design 100% electronic high eti ability Simply sonneuts between servos receiver Featuea individual semo reversing bar different mining rates allow tailor miner needs 01 model Will overdrive servos options selected simple switches Made USA ond deuigved work modern AM FM PCM radio systems Ultra-low power consumption Less radio connectors Weight 025cc Size 15 0 05 0 50 Part No OA $3095 tees connecters $3685 complete AccessorySwitch ACCESSORY SWITCH gives ability add sraioff function channel withour sacrificing chan nels ability control sems AccessorySwitch designed switch flu 30 volts up 30 amps moo power dissipation ot 300 watts Modern micrsprocessor-lrasnd design Accessory Switch very simple setup end ostalllant connect between servo receiver channel choose oft points selected simple dip switches 10w t6 ditferent values LED indicator help setup Unit automatically turns off transmitter oft Made USA end designed work AM PM PCM radio uystnms Low power consumption Less radio connector Size fSo 005s 00 Weight 12 oc Part No OU $3095 less coosector $3790 complete GlowDriver DUAL-OUTPUT SERVO REVERSER2ouwvotnooyouu~or given oldnr radios ability reverse direction ot serus pe eton maddng nwvo installation eanro 0mm coececiect Provides ho h normal end reversed output wr 0 use stan ecpensioe Y-hemess makes split elevator two-servo ailerons doable-sems rudder installation super-easy Modern micrspreceausr-bosed design tSS% electronic Reverser onry simple installlast connect between servos end receiver channel choose No setup onthing tuss withlust pIeS end forget Made USA end designed work modern AM FM end PCM radio systems Ultra-low power consumption Less radio connector Size 10 5 58 000 Weight 020cc Part No 2U $2495 less connector $2790 complete Complete systems andP 0 BOX 3129 CORPUS CHRISTI TX 78463-3129send forAdd $450 S&H otherproducto acailable for- oceu& sF0 15121 814-0803 toutd7PkIDoILvI CTFREE TX rca add planes cam avdboels sTOecnSbenlcc FAS&Ayrcn Nouns 51 21 0-5803 5% Cell enite for- details ovolcuL OruFF pnretebltlswbellnetCatalog s las September 1998 77 DuaI-UutpuT ServoReverser Piper Pawnee Use Pawnee training sport aerobatics towing gliders camera platform application requiring low wing loading large fuselage Features 2 piece fiberglass cowl 2 piece wing wood construction Photo instructions book Adjustable Engine mount box variety engine applications Transportable Unique wing joiner allows quick removal wings W IHTY PE WE NG Formerly AIRTRONICS Specialty Division 1578 Osage Street San Marcos CA 92069Phone 760-744-1553Fax 760-744-2133 Available Leading Habby Dealefs ar Contact Whyte Wings Dealer Inquiries lnvtted e-mail whytewingst4unocam Span 90 Area 1115 sq itt Weight 11 14 lbs Power 108 two-stroke 30 four-stroke ARF Disassembled model transport shown left a8a Ia E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available-P-38 P-40 F4UP-51F3F-1 Brochure $100 SASE Flight Line Toys P0 Box 3484 Springfield MO 65808
Edition: Model Aviation - 1998/09
Page Numbers: 68, 71, 72, 75, 77
C RNAL-COMBUSTION ENGINES arent piston-type power plants useful model aircraft flying Years before first gas engines came market compressed air motors powered model airplane Theyre cailed motors rather engines because like electric motors compressed-gas power plants obtain motive power extemal stored energy sources fact between Lindberghs transatlantic flight onset Great Depression US companies made compressed-air motors model airplanes manufacturers glow engines America today best pre-1930 motors Hoosier Whirlwind threecylinder design Bert Pond AMAs founders Except its steel crankshaft aiuminum connecting rods 1929 Whirlwind made brass bore stroke 375 gave total displacement 12 cubic inches rubber-power-type high-pitch propellers nine 14 inches diameter flew Free flight models large six feet span weighing much 20 ounces air supply powering compressed air motor such Whirlwind contained long cylindrical tank made shim brass typical diameter three inches length two feet air tank dimensions very strongly influenced design compressed-air model airplanes still today Interest early power plants resurfaced couple decades ago modelers developed new better ways make air tanks first aluminum beverage cans joined end-to-end some bold experimenter discovered newly-developed plastic soft drink bottles worked nicely compressed air tanks used pair one-liter bottles supply air 1929 Hoosier Whirlwind powered singlechannel RC model few years ago Bert Pond retumed compressed-air scene 1980s importing extraordinary nearly-all-plastic compressed-air motor Italy Called Z-Motor its displacement 04 cubic inches spins 7-inch-diameter high-pitch prop sport-type glow engine speeds one-liter soft drink bottle air tank pressurized 160 psi Z 68 Model Aviation e Wagner Italian-made nearly all-plastic compressed-air motor offers real change pace model fliers nlm W N NROW JUNIOR MOTo IN 9 IOk e tflIII MISI A~rI4I ampus A-23 CO2 made ideal power plant Free Flight models Henry Pasquet flies RC Hoosier Whirlwind compressed-air motor adequately powers lightweight five-footspan rudder-only RC model 3 z C ow SW CD r m-— m~5 mm U - am~-4 m w~cT 3 ii WmUO~U U m ~ CDI 1D Eu. 0-nOg mIS! 3 CDD cnaCm6U0 _ OC CUa -Ia CD WI 0-c 0 - 0 o c000oE8n 00 2-0 c-Cc 0-0 00C CC 00 N- C -r_ -Or Co 8 8 C ri- i-ri i-I aa -I -J Co 2 m F Cr 0 C2 0 C C I, C 2 ICr Cr Cr Cr -NJ Cr Cr Cr Cr r C -NJ Cr C Cr N CD CD CD C C CD CD CD 0 CD a ci CD Cfl -tO 0 Ca 0~i C 0 a - N CD I aCDN CA CD CD CD 0 0 C 0 CV -U U 00 CCC-rNC aCOC aaNJaNJNJNJ'NJ' 0, 0 N C Cr0>, 0 C NJ C C N -flN -N -NC-N-N-N t N~CJNJOJ NJ J NJ 0 za-~aacooacooaa -N0 C C6CCN rCO CNNCNJNJCC0NJ cCCCN CC0NJNCOC0 OCCOC NNNCC NCCNNN ccNNNCNOCOCaN-C NJCNJOCC CCOOCO CCC cCaCCC CNNNNNNCNJNNCCNJ -0NNNCC0 NJNJNJCNNONJC CCCCOCCNNN-CC NN-NNN C''' NJNJNJNJCCCC0 orCCOONN~Cac0C>> C aa---aO>CO>Cfl C'C NJC-C JC-NC NJCN NJC-NC NJNJcCCCCC-N0-NC-N CCONJNJNJNJ0NJNJNJNJNN Ca C C&&CCCCCCNNC 0NJNJCNNJ CCNC NNC-NNC0-CNN-NC0NJ CC CCC CNNCCCC 0NCa-NC0NJCO CCOS NJCCCCC~NJNJgCC-NNC Cg-- gC C-NCN CCNCO.4NCCCNNJCNJNNThSU NJ--a--- OcrCorC---c--c C-cV---- CCaNNN > NJNJNJa a" CCCCNJ c--C--C__N-N-N-Na NJaNJa NJC0 -CCCC2Ci ==S0 aNJNCNJNCNJNJr0NCNJ-NNCNNJNCNCnh* CNN NJNJCNN -NNNNN-N CNJNJC rCNNNJCC NJNJNJNJCOCNNCONCNCC NNNNNNCCNNNNCNN C CC CNNCNNCNNNNNNNNNNNNNNC-NJNNNC CNJNJNJNJNN CCNNJNNJCCCCC NCNCNCNCNCNC NCN CNNNJNJNJNJ NNNJNJNJNJ--- C CNN~CNN 1-NC UCNCN N4Nr0 COCCI -CCNJCCaCCC--C CaCN--- CC NNNNNNNNCCCCNNNNNN CNN C CNNNNNNNN NNC NNCNNCNNCNNNN NNNNCNN NNNN CNCaNJC NJNJCCCC CNJNNNJNN NCCC NJCCC CNNCC-NNJNNCNN CCCNJCC CaCNJCaCNN CCCNJNJCCCNCNCC C-Cr0 0NJNN C-N ~NJNJ-N NNNNC CNN NNCCNNCNN NNNN NNNNNNNNNNNNNNNN NNNNNN C CCNN -N ALLPniutuujiiiiumiriui rnrnCNJNJ 0 CNJCCNJNJCNNNNJNNCN-NJCCNN~NN CONJCCO Na NJ CC NNJNJCCNNN CCCCC-CNCNJ ~orN C iC Zr B-8N NJ' C C N Cfl~NN NJaN08aO0a--aC N CCa~a0 NCaNJa 0 Zs~ CNNJC CON- C-~- C -n N S -NOC CCC~ OTHER SIZES AVAILABLE N-Nflh CNN -CO COocaaOCCCICCCNNNONNNJN NNJNJNJNJNJ CC CNNNNNNNN NCNNNNNNNNCCCNNNNNNNJ-NJNNNN cc C---NNC--NN N CCCcca CNNCOcOrNEccaCNNNNcC NCCCC0C CICCNCNCNNNNCII NJCCC-CCNNCCNNNJCNN aNJCNa CCN C CNNNNNNNNNN CCCCCCCNN CCCCCNCC CCCNNCCCNNCC COZNNNNNNCC- CONNJCNNNCCCCC NJNNC -NCC Cl CD V CD 2 CD 0 0 -J -L Z-Power System inflation valve incredibly simple spring-actuated air valve atop piston represents major design breakthrough type power plant No lubrication needed recommended fact oils will soften Z-Motors plastic parts make unrunnable far prevalent compressed-air motors todays increasingly popular pressurized gas model airplane flying CO2 motors Its probably no coincidence C02powered model airplane motors first developed practical form Bill Brown same man made first practical gas engines sold aircraft modelers earliest Brown-designed CO motors marketed OK 1947 almost two years before first /2A glow plug engines came out About same size later K&B Infant OK CO2 motor simple straightforward design no significant improvement has ever made CO2 motors todays hobby market work just same way Bill Browns originals half century ago Outwardly CO2 motors look much like gas engines single-cylinder types theres piston driving crankshaft revolves crankcase also serves mount interior details differ markedly internalcombustion practice High-pressure CO2 approximately 800 psi supplied external tank cylinder head length thin metal tubing head contains tiny steel ball check valve prevents pressurized CO2 flowing cylinder Atop piston short pin CO tank pressurized before flight nothing happens motor Thats because ball check valve seals off gas flier flips prop piston reaches top its stroke pin forces bail away its seat cylinder head high-pressure gas impels piston downward bail seats again cutting off further flowand expanding CO2 above piston keeps moving until near bottom stroke uncovers set exhaust ports cylinder wail releases pressure piston momentum rotating propeller drives piston upward again ready another power stroke CO motors have fins cylinders hdJ 4-40x1/2 socket caps sell $435/i 00 alloy steel S665/1 00 stainless S750/50 aluminum fair prices sensible quantities fas teners need model building call write fax free catalog Micro Fasteners 800-892-6917 110 Hillcrest Road 908-806-4050 Flemingion Ni 08822 fax 908-788-2607 e-mail mirsf@blastnet Internet http//microfastenerscem 72 Model Aviation -VAC SYSTEM Introduting new fully automatic vacuum bagging system completely self-monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg vacuum switch stable 510 22 Hg vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vac connector Iwo Quick-lock seals 9 18 wide bagging tube 9 15 wide complete breather cloth set vacuumfor 238 V Sytem avaIoble bagging instructionsAM S7tt SAt theA Mt/ttD Mt/VISA accepted eideet add 825% lax ODoolittleDrSeinleandrotLA94571 510 352-2022 510 352-2021 L Un AnlIqUeS Military Civilian Helicopters Sailpians have wodds largest aircraft documentation collection 7000 different full color photo studies 1903-1997 35000 3-view line drawings 1998 Catolo /Guide 200 pages Canada/Mexico 11000 Only YOverseas $1500 Bob Bankas Scale Model Research 114 Yukon Avenue a Mesa CA 92626 714 979-8058 http//www ml net/ims/scale html arent cooling fins glow engines theyre heating fins Thats because highpressure CO2 passes through check valve begins expanding gets exceedingly cold Like other piston engines CO2 motors obtain power expansion gas above moving pistons heat assists expansion warmer its cylinder power CO2 motor develops problem compressed-gas motors lubrication high-pressure air CO2 powers quickly blows away nearly oil flier may put moving parts motor before starting However power plants work room temperature lightly stressed Wear rates therefore low Probably major cause motor wearout dust gets flying field attempt minimize friction between cylinder piston CO2 motors some manufacturers British Telco firm used nylon plastic pistons Though worked awhile didnt provide nearly consistent performance nor long life all-metal motors made Brown Czech-made motors designed developed Stefan Gasparin now widely-used CO2 power plants come incredible range sizes way unbelievably tiny three-cubic-millimeter 0002 cubic inches motor weighing less new dime 14-cylinder radials Gasparin CO2 motor equipped RC throttle Thats 307 cubic mm about 020 cubic inch single-cylinder motor swings seven-inch prop can power mim RC models about 120-square-inch wing area five-ounce total weight Henry Pasquet Ellsinore MO has flying RC models throttleable CO2 motor yearsand smaller motors too Though Henrys airplanes smali light theyre plenty rugged enough outdoor flying years annual SMALL Small Model Aircraft Lovers League meet Little Rock Henry shows up ever-morenumerous fleet amazing C02-powered Radio Control miniatures impressive wide variety Free Flight CO2 models flown Sunday morning Balboa Parkan suburbs model flying site near Van Nuys CA anyone needs convinced about troublefree flyability CO2 motors theres place go problematic area operating CO2 T-ON OWEN LESS HASSlE MORE FUN Dieselize Davis Diesel Its Awesome 1S4 4CUNO DAVIS MODEL PRODUCTS Up 50% Power * Same Easy Starling No Glow Plugs Runs flvice Long Scale Sound P0 Box 141 Dept MA ord CT 06460 877-1670 complete inrmation packet send $400 Icredit applied first orderl TRU-TURN now ofters very finest versatile lightweight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name U 7ent7~ eLISA PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSA TILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Z E ember 1998 75 much aircraft worth Protect investment FLIGHT ALARM 95 battery monitor & aircraft locater smooth surBuilding Board 3 Sizes pining parts available gluing together Pieces cut cross grain end wood grain makes up surface allows multiple cuts surface crumbling Board slightly flexible Price includes S & H MI residents add 6% sales tax will conform table topSony no orders outside continental U S #24 ~W#48 S 734-434-8928 LYMCOIxjvF4tA@proigycom PO Box 178Check money Milan MI 48160arderonly ano o 95db @ 6 volts pulsing alarmwith order C-TRONICS Inc PO Box 192 Ramsey NJ 07446 201-818-4289 motors fueling operation Unlike OK-made motors 1947 used heavy steel Sparkletts cylinder holder attached power plant carried during flight todays CO2s employ refillable aluminum tanks refilling somewhat art form two distinct types CO2 fills pressurizes motors tank gas Thats used short runs other method fills tank liquid C02 provides much longer more-constant-speed run time difference comes way CO2 filler supply reservoir positioned Whether thats Sparkletts capsule hand-held charger five-pound artists airbrush supply bottle supply container pointing upward during filling operation tank model gets gas fill reservoir points downward liquid CO2 charges motor tank trick lies connecting model reservoir losing pressure CO2 motors small no heavy hardware can used standard method hand-connect small male fitting connected thin tubing motor tank mating pressurized fitting charger Although CO2 pressure around 800 psi flow area fittings very small Little force needed hold charging connectors together gas leakage during operation can sometimes bother charging connectors made Bill Brown noted freedom leakage used tapered mating surfaces provided excellent sealing during charge Bill suffered stroke last year CO2 products no longer available Gasparin GMOT conneetors have straightsided mating parts prone leakage arent aligned precisely during charging operation Incidentally theres absolutely no danger anyone getting frosthitten operating CO2 model motors liquid CO2 Yeservoir remains normal air temperature Though cooling does occur during charging operation also motor running often getting cold enough form frost motor components have little mass theres no chance getting fingertip frozen CO2 motor its tank plumbing Perhaps best feature CO2 motor operation quiemess little power plants produce definite piston engine sound-but such insignificant level could probably run church bothering anyone E CATALOGS SPPS 160 Superstie Consfnicton Plans$500 SPPS 120060 Occumentabco Photos 3Vs$500 ASP Model Akcrat Construcson Pis$500 ASP Scale ro-oft Dmvtngs 3Vs$500 Add $500 Sa Air Overseas 1/5Sc WINNIE MAE 1002 Pc Wing Plans $3700 Jim Pepinos SCALE PLANS & PHOTO SERVICE 3209 Madison Ave Greensboro NC 27403 Vis CPHONE/FAX 910 2925239 LOCKHEED VEGA ElevonMixer __ ELECTRONIC MIXER elevons v-tails tlaps o spoilers Ultra-sierple aetap inatailation Rugged rnicroprovessor based design 100% electronic high eti ability Simply sonneuts between servos receiver Featuea individual semo reversing bar different mining rates allow tailor miner needs 01 model Will overdrive servos options selected simple switches Made USA ond deuigved work modern AM FM PCM radio systems Ultra-low power consumption Less radio connectors Weight 025cc Size 15 0 05 0 50 Part No OA $3095 tees connecters $3685 complete AccessorySwitch ACCESSORY SWITCH gives ability add sraioff function channel withour sacrificing chan nels ability control sems AccessorySwitch designed switch flu 30 volts up 30 amps moo power dissipation ot 300 watts Modern micrsprocessor-lrasnd design Accessory Switch very simple setup end ostalllant connect between servo receiver channel choose oft points selected simple dip switches 10w t6 ditferent values LED indicator help setup Unit automatically turns off transmitter oft Made USA end designed work AM PM PCM radio uystnms Low power consumption Less radio connector Size fSo 005s 00 Weight 12 oc Part No OU $3095 less coosector $3790 complete GlowDriver DUAL-OUTPUT SERVO REVERSER2ouwvotnooyouu~or given oldnr radios ability reverse direction ot serus pe eton maddng nwvo installation eanro 0mm coececiect Provides ho h normal end reversed output wr 0 use stan ecpensioe Y-hemess makes split elevator two-servo ailerons doable-sems rudder installation super-easy Modern micrspreceausr-bosed design tSS% electronic Reverser onry simple installlast connect between servos end receiver channel choose No setup onthing tuss withlust pIeS end forget Made USA end designed work modern AM FM end PCM radio systems Ultra-low power consumption Less radio connector Size 10 5 58 000 Weight 020cc Part No 2U $2495 less connector $2790 complete Complete systems andP 0 BOX 3129 CORPUS CHRISTI TX 78463-3129send forAdd $450 S&H otherproducto acailable for- oceu& sF0 15121 814-0803 toutd7PkIDoILvI CTFREE TX rca add planes cam avdboels sTOecnSbenlcc FAS&Ayrcn Nouns 51 21 0-5803 5% Cell enite for- details ovolcuL OruFF pnretebltlswbellnetCatalog s las September 1998 77 DuaI-UutpuT ServoReverser Piper Pawnee Use Pawnee training sport aerobatics towing gliders camera platform application requiring low wing loading large fuselage Features 2 piece fiberglass cowl 2 piece wing wood construction Photo instructions book Adjustable Engine mount box variety engine applications Transportable Unique wing joiner allows quick removal wings W IHTY PE WE NG Formerly AIRTRONICS Specialty Division 1578 Osage Street San Marcos CA 92069Phone 760-744-1553Fax 760-744-2133 Available Leading Habby Dealefs ar Contact Whyte Wings Dealer Inquiries lnvtted e-mail whytewingst4unocam Span 90 Area 1115 sq itt Weight 11 14 lbs Power 108 two-stroke 30 four-stroke ARF Disassembled model transport shown left a8a Ia E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available-P-38 P-40 F4UP-51F3F-1 Brochure $100 SASE Flight Line Toys P0 Box 3484 Springfield MO 65808