Radio Control GIANT SCALE Bob Beckman ISOLATED SERVO BATTERIES Anyone getting Giant Scale soon learns need heavy duty servos have power move large control suffaces never get thing nothing power gets servo form high current flow battery turn leads need batteries higher capacity 500mAh battery can power servos standard RC model several flights might make through thefirst flight Giant Scale aircraft Big l200mAh 1 2Ah batteries what usually see big birds wise modeler keeps close eye condition another aspect situation well known understood high current being drawn battery ouput voltage battery dragged down less charge battery contains greater will change voltage Eventually battery could get point its output voltage drops low cant force enough current through motor make turn over what happening car battery down get sickening click turn key course youre going get point servosbecause long before receiver has given up youre looking pile splinters does receiver give up Well youre like 9944% modelers out youre carrying battery power flight pack bird same battery having its nut48 Model Aviation beautiful plane perfect day look flying alto Dick Enos Curtiss Goshawk faces out across almost limitless Merwin Ranch field California late afternoon sun glints wingis really model Maybe hell bring Vega years Sacramento Giant Scale Fly-in over Labor Day weekend Bob has must-list meets column Youll see real grabbers great fly-ins Don Godfreys B-25 Jerry Nelsons Super Cub covered Ceconite R/C Jerrys new climbs out after takeoff last years STARS Spangled Rally 82 company sells powered special 18 ci Kawasaki C B event Olean NY scheduled July 10-11 See Associates Plans will available soon details column put voltage dragged down servo current supplying power receiver Now receivers going knocked out little variation supply voltage After battery-powered devices have designed operate over normal range changes battery voltage battery discharges fact receivers will operate quite nicely three cells usual four-cell pack gives us servo power margin error receiver margin standard-size models Giant Scale aircraft its larger control surfaces much larger servo loading margin starts get mighty thin Wait minute say thats put big battery should have margin back Well yes no long-term basis yes big battery gives us capacity need wont discharge battery too fast would small instantaneous basis however may still trouble highest current drain occurs servo first starting up addition control surface load servo takes lot current get servos motor running As soon motor starts turning current drops power level required move control first surge current very short can also very high larger servos can order two amperes Since short total drain batterys capacity small lasts can drag battery voltage down volt What wind up high-amplitude negative spike supply voltage line Now receiver can shrug off gradual change volt DC supply level change talking about can look very much like signals receiver supposed get whats looks like very strong signal So what can happen spike caused servo starting gets converted signal starts another servo running causes spike starts another etc can wind up servos uttering back forth driving limits legitimate signals blocked out people design radios know about things like course have designed receivers decoders minimize kind situation receivers using Continued page 110 May 198249 Bob Morse props Kawasaki F4B-2 1981 HIll Country Flyers Mammoth Scale Fly-in Bob director 1982 edition coming up August 21-22 #3 #4 #6 #8 SIZE #2 #3 #4 #6 #8 SIZE #2ii #312 #412 #612 #812 Remember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE yourfree catalog todayDEALERS INVITED ERO TREND PRODUCTS 44W Prospectt NawI-I~n CT06515 T today designed before started hanging big servos fine smaller servos can marginal application word marginal important effect Im talking about may show up until battery gets down some otherwise acceptable level discharge maybe doesnt show up operating ground does flight loads surfaces draw little current battery short its things can happen everything seems perfect shape work being done sort problem Bill Hershberger example has done lot design work prevent interaction between servos decoders receivers new receivers coming along will have problem marginally Thats great what about us cant afford buy new gear time fairly simple inexpensive way avoid problem Notice said avoid cure interaction talking about occurring because glitches power supply line provide another source power receiver wont stop glitches will keep getting receiver via power supply Providing another power source simply means carrying second battery connecting system together shown diagrams second battery doesnt have big standard 500mAh flight battery will fine can use power smaller servos used light loads like throttle some disadvantages course will need either extra switch remember turn both good quality threepole switch will need some special cables little complicated Y harness youve got another battery keep charged opinion advantages far out weigh disadvantages An example such system installation m Stinson Voyager Im actually using three 500mAh batteries two 20H aileron servos 20H elevator rudder servos third powering receiver bantam-size flap throttle ignition servos recommend arrangement body 500mAh batteries can handle peak current involved future installations will using 1 2Ah packs place first two small batteries receiver am using has given good service several years small models first time started drive GRISH LARGE Plasticote Propeller new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger yet thinner best efficiency 24 x 9 Propeller $20 HARDER LIGHTER STIFFER Other sizes will soon available 110 Model Aviation RC Giant Scale/Beckman Continued page 49 AT YOUR DEALER GRISH BROS ST JOHN IND 46373 20H servos however trouble large servo several small ones everything fine batteries fresh Add another large servo let batteries drop off bit everything started jittering range dropped off drastically split battery arrangement system has solid rock Incidentally Im also using long servo cables plane aileron servos end about five feet cable use three-conductor shielded cable shield grounded receiver end So far have seen no indica tion problems despite dire predic tions Ceconite covering Ceconite has become widely used fabric full-scale aircraft several fabrics somewhat similar Ceconite have used Giant Scale applications really match its features important advantages true Ceconite its controlled shrinkage heat amount shrinkage proportional heat applied maximum 10% 400W However shrinking process doesnt start until reach 2000 means dont have worry about unwanted shrinkage hot day least Pm going out onto 2000 runway among other things Ceconite FAA approved Genuine Ceconite fabric now available un der name Ceconite H/C light weight grade used control surfaces fullscale aircraft Its closer weave nice quarterscale approximation standard grade used purposes result extremely realistic fabric Giant Scale applications material available Jerry Nelson & CoinContinued page 114 Winning Ideas FOURMOST FUEL MANIFOLD 10 SEWN HIFUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize Ii 10 PRICE $150 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming Positive Airborn Shutoff % 10PRICE $125PRICE $420 % AND V 00STRUT FAIRINGS Comesintwo oockgft 023 Lengths Two Sizes coammg% lD AWYor 10La ge Fuel F tt ng Set fZSze IDPRICE $200 Packaged 2 Ft SizePRICE /1 Tee 1 E bow 1 Un 1 Pug PRICE $2502 lengths eithbr size $2 70so h Made FwW Foe Pins Poyc hyena FUR~T Send SASE Complete Information 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 GET ORGANIZED Hares set 4 sturdy fdes froMs over 4 years favorite 8r ou5uzrneS 4 MAO FILES $495 Send 5490 ytus St 00 puSfaee ftaodfrnt DON INDUSTRIES po sox 3M-K DOVER NH 03520 550* WOODEN BEAM BALANCE PLAN SET STEP NY STEP ErtOTOS E tLLuoTnuTIuNS STICE OS-TEMPLATES S SA0ATEO SCALE Mj MICRO-AIBEo soy tl2e-P EYICI-EAtYJO W May 1982111 SAILPLANE COMPONENTS CREATE YOUR OWN SUPER GLIDER STAB FOAM CORES OWING FOAM CORES Rudder & Fin Cores Floater Thermal & Slope WING RODS Wing Tongue Kits COVERING MATERIALS White skin & Lustroleen 0 FUSELAGES LUSTROLEEN 2 Meter Standard Open & Scale FOR HI JOHNSONS PORTFOLIO PRICE SHEET & ORDER FORM about sailplane construction & design using foam & plastic SEND $250 CHECK OR MO CA RES ADD SALES TAX CampiatalyWith EaginWith Radio Alapian Finlaitad Insialled1991119 TanAr$18995$28995950995 Olynlyit 9901249529995 EZ Fl129951999542995 ii pany 3510 San Mateo Avenue Reno NV 89509 Jerry Nelson certainly new name modeling has active competitor innovator hobby years first met Jerry about 25 years ago early teens first getting started Radio Control modeling went instrumental estab lishing some popular todays RC activities has associated busi ness end hobby adult life now involved Giant Scale new enter prise directed toward supplying some needs use Ceconite R/C Jerry has available adhesive unique water-base filler used full-scale aircraft carry FAA approvaL near future will offering aircraft-quality fiberglass cloth also drawn full-scale use just proof fact Giant Scale birds closer real aircraft models Jerry will have additional offerings Giant Scaler starting plans -scale Super Cub -scale Corby Starlet CJ-1 wish him luck knowing Jerry Ill expect see lot useful items him now concentrating Giant Scale Fly-in dates being written January snow ground like think about temperature hovering around zero Im holed up shop building like mad cabin fever mounting ray sun shine information surfacing about coming flying season April 16-18 Arkansas Jumbo Fun Fly Petit Jean Mountain State Park Morrilton AR sponsored Budweiser first what should become major annual event Get details Wendel Glenda Roberts *9 Timber Valley Cove Little Rock AR 72204 Since time will short time read might want call 501 224-4278 July 1-5 Bawlf Alberta Canada Dick Phillips Big Beautiful man behind just moved area already has locals marching drum description field facilities sounds great info write Dick Phillips 9 Geneva Crescent St Albert Alberta Canada T8N 0Z3 Remember have use US stamp price marked C things wont accepted Canadian postal system July 10-11 STARS Spangled Scale Rally Olean NY STARS annual Scale rally open Scale RC model over years has become prestigious Giant Scale 114 Model Aviation F g rLiqhr ox eddfa4fE 74Idez4 $ 99p0 VISA DELIVERED Four Folding Legs Wing 8 Fuselage Holders Add $400 Shipping calif 6% Tax RAC Products408 274-1915 3200 Knightswood Way S San Jose CA 95148 SUPERwings A DIVISION OF HI JOHNSON MODEL PRODUCTS 11015 GLENOAKS BLVD PACOIMA CA 91331 Columbia Model Crafts proudly introduces its expanded line professionally finished aircraft quality conscious modeler flainAir 40 powered high-wing airplane Northeast Aerodynamics 58 wingspan wood covered Monokote 4-channel wheels motor mount piece hinged wing Acrobatic yet stable Olympic 650 Airtronics superb 2-meter sailplane plug-in wing panels covered Monokote surfaces hinged pushrods installed EZ Fli Cabin model 51 wing 25 through 35 engines 4-channels wheels motor mount piece wing Excellent sport plane See RC Modeler review January 1982 feature OS engines radios Airtronics World Futaba Columbia Model Crafts 9366 Sharp Antler ______________________ Columbia Maryland 21045 _______________________301 596-0134 otter beaThfuI Plan Sets byatidreg Super Buccaneer 88 Wingspan 5 Engines Pias Set ecTFt $1795 3/4 size scale sersios ctassic designR/C Super Buccaneer 20 Custom Desron Seurce otters tee finest layout #RCFF-4 Plans make yoor own k Petonoabte $100 Pray Set $1295 erreos brochure Add $200 tar $ottea Fran C Marroo Tone affair East Olean airport closed full-scale traffic two-day affair both grass paved runways available George Privateer Fortune Drive Allegany NY 14706 can give details Yes complete address August 2 1-22 Hill Country Morgan Hill California years Hill Country Flyers Mammoth Scale Fly-in week two later usual promises same out standing event past Bob Morse director year can provide details Write Bob 3351 Pruneridge Ave Santa Clara CA 95051 September 4-6 Merwin Ranch Sacramento California doubt finest flying site have ever seen Grass-covered billiard-table flat dimensions measured feet yards miles Write Bob Rhoads 9100 La Serena Drive Fair Oaks CA 95628 details Keep touch Ill back next month Bob Beckman 8248 Holly Grove Ct Manas sas VA 22110 Seamaster Willard Continued page 32 maneuverable throttled back cruising power easy fly sport trainers market todayand easier some No primary trainer beginners sport flier sport trainer have previously built flown simple primary trainer want step up notch Theres old sayingTry youll like doesnt really apply Seamaster Sport 40 What does Build fly Youll love itt Buy DIRECT SAVE OVER 50% COMPLETE MODELERS ASSORTMENT OF FASTENERS MAY 1680* NEW*ATYOURFINGERTIPS*#*~e** ** SHOWED PRtCE SURVEY* ALLOY PARTS * NEVER OFFERED BEFORE**NO ORGANIZER AT OVER FtFTY* * NO MORE SPECtAL TRtPS TO THE**OOLLARS THAN TWtCEOUR* * HOBBY STORE tFtTtS OPENS** 495* RSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST PC5 256 3 t6 SOCKET HEAD CAP SCREW 25 2-56 1 4 SOCKET HEAD CAP SCREW 25 256 1 2 SOCKET HEAD CAP SCREW 25 4-40 1 4 SOCKET HEAD CAP SCREW 20 440 1 2 SOCKET HEAD CAP SCREW 20 468 34 SOCKET HEAD CAP SCREW 20 440 1 SOCKET HEAD CAP SCREW 20 632 1 4 SOCKET HEAD CAP SCREW 15 632 1 2 SOCKET HEAD CAP SCREW iS 632 34 SOCKET HEAD CAP SCREW 15 632 1 SOCKET HEAD CAP SCREW iS $-35 1 r SOCKET HEAD CAP SCREW IS 632 2 SOCKET HEAD CAP SCREW 15 FLAT WASHERS SAF ZtNC PLATED 4 6 NYLON NSERT LOCK NUTS ZINC PLATED 2-56 440 632 TS 40 So 75 65 NI TOTAL PCS 735 KITSCOME COMPLETE WITH 10 COMPARTMENT HEAVY DUTY NDUSTRIAL ORGANtZER ONLY $2495 __________________THESE SUPERB NEW G-MARK THROTTLE-EQUI MULTI-CYLINDER R/C ENGINES OFFER SCALE APPEARANCE & PERFORM ARE EASY STARTING WITH SMOOTH OPERATION & EXCELLENT TOP 122 R/C30 RIO TWIN TWIN iu305 SCYL 2800-14000RPM2s R/C $9995 z0015000 RPM 1095 OZ $17495 THROTTLE MUFFLER AND BALL BEARINGS STD ALL ENGINES OZ 495 OZ GLOW PLUGS NOT INCLUDED 2500-15000 RPM Calif add Sales Tax Shipping $300 noCODs VISA t Brochure 61 US $170 Foreign Add 41/2% Visa er Card Std Dealer Distributor Discounts L 13400-26 Saticoy StreetNortH Hollywood Calif 9160512131 _______ May1982 115 t1tI Lah1 1 In/lI Ill - 5o5soJ~jIjj alhlAljijil -. iJ HSA4NI ALLOY ASSORTMENT SHOWN Mail Order To* Please include $250 tar postage HARDWARE SYSTEMS * handling Add $150 tar coo 1428 WashIngton Ave S@* Minn residents add 5% sales tax Eden Prairie NIKfl * Orders will shipped withing 48 Phone 81294I15T hours 1 CANNONR/C MULTI ENGINES RIC SYSTEMS cap Is allow access tor remov ing steerable nose gear Steering pushrod sealed against water
Edition: Model Aviation - 1982/05
Page Numbers: 48, 49, 110, 111, 114, 115
Radio Control GIANT SCALE Bob Beckman ISOLATED SERVO BATTERIES Anyone getting Giant Scale soon learns need heavy duty servos have power move large control suffaces never get thing nothing power gets servo form high current flow battery turn leads need batteries higher capacity 500mAh battery can power servos standard RC model several flights might make through thefirst flight Giant Scale aircraft Big l200mAh 1 2Ah batteries what usually see big birds wise modeler keeps close eye condition another aspect situation well known understood high current being drawn battery ouput voltage battery dragged down less charge battery contains greater will change voltage Eventually battery could get point its output voltage drops low cant force enough current through motor make turn over what happening car battery down get sickening click turn key course youre going get point servosbecause long before receiver has given up youre looking pile splinters does receiver give up Well youre like 9944% modelers out youre carrying battery power flight pack bird same battery having its nut48 Model Aviation beautiful plane perfect day look flying alto Dick Enos Curtiss Goshawk faces out across almost limitless Merwin Ranch field California late afternoon sun glints wingis really model Maybe hell bring Vega years Sacramento Giant Scale Fly-in over Labor Day weekend Bob has must-list meets column Youll see real grabbers great fly-ins Don Godfreys B-25 Jerry Nelsons Super Cub covered Ceconite R/C Jerrys new climbs out after takeoff last years STARS Spangled Rally 82 company sells powered special 18 ci Kawasaki C B event Olean NY scheduled July 10-11 See Associates Plans will available soon details column put voltage dragged down servo current supplying power receiver Now receivers going knocked out little variation supply voltage After battery-powered devices have designed operate over normal range changes battery voltage battery discharges fact receivers will operate quite nicely three cells usual four-cell pack gives us servo power margin error receiver margin standard-size models Giant Scale aircraft its larger control surfaces much larger servo loading margin starts get mighty thin Wait minute say thats put big battery should have margin back Well yes no long-term basis yes big battery gives us capacity need wont discharge battery too fast would small instantaneous basis however may still trouble highest current drain occurs servo first starting up addition control surface load servo takes lot current get servos motor running As soon motor starts turning current drops power level required move control first surge current very short can also very high larger servos can order two amperes Since short total drain batterys capacity small lasts can drag battery voltage down volt What wind up high-amplitude negative spike supply voltage line Now receiver can shrug off gradual change volt DC supply level change talking about can look very much like signals receiver supposed get whats looks like very strong signal So what can happen spike caused servo starting gets converted signal starts another servo running causes spike starts another etc can wind up servos uttering back forth driving limits legitimate signals blocked out people design radios know about things like course have designed receivers decoders minimize kind situation receivers using Continued page 110 May 198249 Bob Morse props Kawasaki F4B-2 1981 HIll Country Flyers Mammoth Scale Fly-in Bob director 1982 edition coming up August 21-22 #3 #4 #6 #8 SIZE #2 #3 #4 #6 #8 SIZE #2ii #312 #412 #612 #812 Remember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE yourfree catalog todayDEALERS INVITED ERO TREND PRODUCTS 44W Prospectt NawI-I~n CT06515 T today designed before started hanging big servos fine smaller servos can marginal application word marginal important effect Im talking about may show up until battery gets down some otherwise acceptable level discharge maybe doesnt show up operating ground does flight loads surfaces draw little current battery short its things can happen everything seems perfect shape work being done sort problem Bill Hershberger example has done lot design work prevent interaction between servos decoders receivers new receivers coming along will have problem marginally Thats great what about us cant afford buy new gear time fairly simple inexpensive way avoid problem Notice said avoid cure interaction talking about occurring because glitches power supply line provide another source power receiver wont stop glitches will keep getting receiver via power supply Providing another power source simply means carrying second battery connecting system together shown diagrams second battery doesnt have big standard 500mAh flight battery will fine can use power smaller servos used light loads like throttle some disadvantages course will need either extra switch remember turn both good quality threepole switch will need some special cables little complicated Y harness youve got another battery keep charged opinion advantages far out weigh disadvantages An example such system installation m Stinson Voyager Im actually using three 500mAh batteries two 20H aileron servos 20H elevator rudder servos third powering receiver bantam-size flap throttle ignition servos recommend arrangement body 500mAh batteries can handle peak current involved future installations will using 1 2Ah packs place first two small batteries receiver am using has given good service several years small models first time started drive GRISH LARGE Plasticote Propeller new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger yet thinner best efficiency 24 x 9 Propeller $20 HARDER LIGHTER STIFFER Other sizes will soon available 110 Model Aviation RC Giant Scale/Beckman Continued page 49 AT YOUR DEALER GRISH BROS ST JOHN IND 46373 20H servos however trouble large servo several small ones everything fine batteries fresh Add another large servo let batteries drop off bit everything started jittering range dropped off drastically split battery arrangement system has solid rock Incidentally Im also using long servo cables plane aileron servos end about five feet cable use three-conductor shielded cable shield grounded receiver end So far have seen no indica tion problems despite dire predic tions Ceconite covering Ceconite has become widely used fabric full-scale aircraft several fabrics somewhat similar Ceconite have used Giant Scale applications really match its features important advantages true Ceconite its controlled shrinkage heat amount shrinkage proportional heat applied maximum 10% 400W However shrinking process doesnt start until reach 2000 means dont have worry about unwanted shrinkage hot day least Pm going out onto 2000 runway among other things Ceconite FAA approved Genuine Ceconite fabric now available un der name Ceconite H/C light weight grade used control surfaces fullscale aircraft Its closer weave nice quarterscale approximation standard grade used purposes result extremely realistic fabric Giant Scale applications material available Jerry Nelson & CoinContinued page 114 Winning Ideas FOURMOST FUEL MANIFOLD 10 SEWN HIFUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize Ii 10 PRICE $150 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming Positive Airborn Shutoff % 10PRICE $125PRICE $420 % AND V 00STRUT FAIRINGS Comesintwo oockgft 023 Lengths Two Sizes coammg% lD AWYor 10La ge Fuel F tt ng Set fZSze IDPRICE $200 Packaged 2 Ft SizePRICE /1 Tee 1 E bow 1 Un 1 Pug PRICE $2502 lengths eithbr size $2 70so h Made FwW Foe Pins Poyc hyena FUR~T Send SASE Complete Information 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 GET ORGANIZED Hares set 4 sturdy fdes froMs over 4 years favorite 8r ou5uzrneS 4 MAO FILES $495 Send 5490 ytus St 00 puSfaee ftaodfrnt DON INDUSTRIES po sox 3M-K DOVER NH 03520 550* WOODEN BEAM BALANCE PLAN SET STEP NY STEP ErtOTOS E tLLuoTnuTIuNS STICE OS-TEMPLATES S SA0ATEO SCALE Mj MICRO-AIBEo soy tl2e-P EYICI-EAtYJO W May 1982111 SAILPLANE COMPONENTS CREATE YOUR OWN SUPER GLIDER STAB FOAM CORES OWING FOAM CORES Rudder & Fin Cores Floater Thermal & Slope WING RODS Wing Tongue Kits COVERING MATERIALS White skin & Lustroleen 0 FUSELAGES LUSTROLEEN 2 Meter Standard Open & Scale FOR HI JOHNSONS PORTFOLIO PRICE SHEET & ORDER FORM about sailplane construction & design using foam & plastic SEND $250 CHECK OR MO CA RES ADD SALES TAX CampiatalyWith EaginWith Radio Alapian Finlaitad Insialled1991119 TanAr$18995$28995950995 Olynlyit 9901249529995 EZ Fl129951999542995 ii pany 3510 San Mateo Avenue Reno NV 89509 Jerry Nelson certainly new name modeling has active competitor innovator hobby years first met Jerry about 25 years ago early teens first getting started Radio Control modeling went instrumental estab lishing some popular todays RC activities has associated busi ness end hobby adult life now involved Giant Scale new enter prise directed toward supplying some needs use Ceconite R/C Jerry has available adhesive unique water-base filler used full-scale aircraft carry FAA approvaL near future will offering aircraft-quality fiberglass cloth also drawn full-scale use just proof fact Giant Scale birds closer real aircraft models Jerry will have additional offerings Giant Scaler starting plans -scale Super Cub -scale Corby Starlet CJ-1 wish him luck knowing Jerry Ill expect see lot useful items him now concentrating Giant Scale Fly-in dates being written January snow ground like think about temperature hovering around zero Im holed up shop building like mad cabin fever mounting ray sun shine information surfacing about coming flying season April 16-18 Arkansas Jumbo Fun Fly Petit Jean Mountain State Park Morrilton AR sponsored Budweiser first what should become major annual event Get details Wendel Glenda Roberts *9 Timber Valley Cove Little Rock AR 72204 Since time will short time read might want call 501 224-4278 July 1-5 Bawlf Alberta Canada Dick Phillips Big Beautiful man behind just moved area already has locals marching drum description field facilities sounds great info write Dick Phillips 9 Geneva Crescent St Albert Alberta Canada T8N 0Z3 Remember have use US stamp price marked C things wont accepted Canadian postal system July 10-11 STARS Spangled Scale Rally Olean NY STARS annual Scale rally open Scale RC model over years has become prestigious Giant Scale 114 Model Aviation F g rLiqhr ox eddfa4fE 74Idez4 $ 99p0 VISA DELIVERED Four Folding Legs Wing 8 Fuselage Holders Add $400 Shipping calif 6% Tax RAC Products408 274-1915 3200 Knightswood Way S San Jose CA 95148 SUPERwings A DIVISION OF HI JOHNSON MODEL PRODUCTS 11015 GLENOAKS BLVD PACOIMA CA 91331 Columbia Model Crafts proudly introduces its expanded line professionally finished aircraft quality conscious modeler flainAir 40 powered high-wing airplane Northeast Aerodynamics 58 wingspan wood covered Monokote 4-channel wheels motor mount piece hinged wing Acrobatic yet stable Olympic 650 Airtronics superb 2-meter sailplane plug-in wing panels covered Monokote surfaces hinged pushrods installed EZ Fli Cabin model 51 wing 25 through 35 engines 4-channels wheels motor mount piece wing Excellent sport plane See RC Modeler review January 1982 feature OS engines radios Airtronics World Futaba Columbia Model Crafts 9366 Sharp Antler ______________________ Columbia Maryland 21045 _______________________301 596-0134 otter beaThfuI Plan Sets byatidreg Super Buccaneer 88 Wingspan 5 Engines Pias Set ecTFt $1795 3/4 size scale sersios ctassic designR/C Super Buccaneer 20 Custom Desron Seurce otters tee finest layout #RCFF-4 Plans make yoor own k Petonoabte $100 Pray Set $1295 erreos brochure Add $200 tar $ottea Fran C Marroo Tone affair East Olean airport closed full-scale traffic two-day affair both grass paved runways available George Privateer Fortune Drive Allegany NY 14706 can give details Yes complete address August 2 1-22 Hill Country Morgan Hill California years Hill Country Flyers Mammoth Scale Fly-in week two later usual promises same out standing event past Bob Morse director year can provide details Write Bob 3351 Pruneridge Ave Santa Clara CA 95051 September 4-6 Merwin Ranch Sacramento California doubt finest flying site have ever seen Grass-covered billiard-table flat dimensions measured feet yards miles Write Bob Rhoads 9100 La Serena Drive Fair Oaks CA 95628 details Keep touch Ill back next month Bob Beckman 8248 Holly Grove Ct Manas sas VA 22110 Seamaster Willard Continued page 32 maneuverable throttled back cruising power easy fly sport trainers market todayand easier some No primary trainer beginners sport flier sport trainer have previously built flown simple primary trainer want step up notch Theres old sayingTry youll like doesnt really apply Seamaster Sport 40 What does Build fly Youll love itt Buy DIRECT SAVE OVER 50% COMPLETE MODELERS ASSORTMENT OF FASTENERS MAY 1680* NEW*ATYOURFINGERTIPS*#*~e** ** SHOWED PRtCE SURVEY* ALLOY PARTS * NEVER OFFERED BEFORE**NO ORGANIZER AT OVER FtFTY* * NO MORE SPECtAL TRtPS TO THE**OOLLARS THAN TWtCEOUR* * HOBBY STORE tFtTtS OPENS** 495* RSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST PC5 256 3 t6 SOCKET HEAD CAP SCREW 25 2-56 1 4 SOCKET HEAD CAP SCREW 25 256 1 2 SOCKET HEAD CAP SCREW 25 4-40 1 4 SOCKET HEAD CAP SCREW 20 440 1 2 SOCKET HEAD CAP SCREW 20 468 34 SOCKET HEAD CAP SCREW 20 440 1 SOCKET HEAD CAP SCREW 20 632 1 4 SOCKET HEAD CAP SCREW 15 632 1 2 SOCKET HEAD CAP SCREW iS 632 34 SOCKET HEAD CAP SCREW 15 632 1 SOCKET HEAD CAP SCREW iS $-35 1 r SOCKET HEAD CAP SCREW IS 632 2 SOCKET HEAD CAP SCREW 15 FLAT WASHERS SAF ZtNC PLATED 4 6 NYLON NSERT LOCK NUTS ZINC PLATED 2-56 440 632 TS 40 So 75 65 NI TOTAL PCS 735 KITSCOME COMPLETE WITH 10 COMPARTMENT HEAVY DUTY NDUSTRIAL ORGANtZER ONLY $2495 __________________THESE SUPERB NEW G-MARK THROTTLE-EQUI MULTI-CYLINDER R/C ENGINES OFFER SCALE APPEARANCE & PERFORM ARE EASY STARTING WITH SMOOTH OPERATION & EXCELLENT TOP 122 R/C30 RIO TWIN TWIN iu305 SCYL 2800-14000RPM2s R/C $9995 z0015000 RPM 1095 OZ $17495 THROTTLE MUFFLER AND BALL BEARINGS STD ALL ENGINES OZ 495 OZ GLOW PLUGS NOT INCLUDED 2500-15000 RPM Calif add Sales Tax Shipping $300 noCODs VISA t Brochure 61 US $170 Foreign Add 41/2% Visa er Card Std Dealer Distributor Discounts L 13400-26 Saticoy StreetNortH Hollywood Calif 9160512131 _______ May1982 115 t1tI Lah1 1 In/lI Ill - 5o5soJ~jIjj alhlAljijil -. iJ HSA4NI ALLOY ASSORTMENT SHOWN Mail Order To* Please include $250 tar postage HARDWARE SYSTEMS * handling Add $150 tar coo 1428 WashIngton Ave S@* Minn residents add 5% sales tax Eden Prairie NIKfl * Orders will shipped withing 48 Phone 81294I15T hours 1 CANNONR/C MULTI ENGINES RIC SYSTEMS cap Is allow access tor remov ing steerable nose gear Steering pushrod sealed against water
Edition: Model Aviation - 1982/05
Page Numbers: 48, 49, 110, 111, 114, 115
Radio Control GIANT SCALE Bob Beckman ISOLATED SERVO BATTERIES Anyone getting Giant Scale soon learns need heavy duty servos have power move large control suffaces never get thing nothing power gets servo form high current flow battery turn leads need batteries higher capacity 500mAh battery can power servos standard RC model several flights might make through thefirst flight Giant Scale aircraft Big l200mAh 1 2Ah batteries what usually see big birds wise modeler keeps close eye condition another aspect situation well known understood high current being drawn battery ouput voltage battery dragged down less charge battery contains greater will change voltage Eventually battery could get point its output voltage drops low cant force enough current through motor make turn over what happening car battery down get sickening click turn key course youre going get point servosbecause long before receiver has given up youre looking pile splinters does receiver give up Well youre like 9944% modelers out youre carrying battery power flight pack bird same battery having its nut48 Model Aviation beautiful plane perfect day look flying alto Dick Enos Curtiss Goshawk faces out across almost limitless Merwin Ranch field California late afternoon sun glints wingis really model Maybe hell bring Vega years Sacramento Giant Scale Fly-in over Labor Day weekend Bob has must-list meets column Youll see real grabbers great fly-ins Don Godfreys B-25 Jerry Nelsons Super Cub covered Ceconite R/C Jerrys new climbs out after takeoff last years STARS Spangled Rally 82 company sells powered special 18 ci Kawasaki C B event Olean NY scheduled July 10-11 See Associates Plans will available soon details column put voltage dragged down servo current supplying power receiver Now receivers going knocked out little variation supply voltage After battery-powered devices have designed operate over normal range changes battery voltage battery discharges fact receivers will operate quite nicely three cells usual four-cell pack gives us servo power margin error receiver margin standard-size models Giant Scale aircraft its larger control surfaces much larger servo loading margin starts get mighty thin Wait minute say thats put big battery should have margin back Well yes no long-term basis yes big battery gives us capacity need wont discharge battery too fast would small instantaneous basis however may still trouble highest current drain occurs servo first starting up addition control surface load servo takes lot current get servos motor running As soon motor starts turning current drops power level required move control first surge current very short can also very high larger servos can order two amperes Since short total drain batterys capacity small lasts can drag battery voltage down volt What wind up high-amplitude negative spike supply voltage line Now receiver can shrug off gradual change volt DC supply level change talking about can look very much like signals receiver supposed get whats looks like very strong signal So what can happen spike caused servo starting gets converted signal starts another servo running causes spike starts another etc can wind up servos uttering back forth driving limits legitimate signals blocked out people design radios know about things like course have designed receivers decoders minimize kind situation receivers using Continued page 110 May 198249 Bob Morse props Kawasaki F4B-2 1981 HIll Country Flyers Mammoth Scale Fly-in Bob director 1982 edition coming up August 21-22 #3 #4 #6 #8 SIZE #2 #3 #4 #6 #8 SIZE #2ii #312 #412 #612 #812 Remember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE yourfree catalog todayDEALERS INVITED ERO TREND PRODUCTS 44W Prospectt NawI-I~n CT06515 T today designed before started hanging big servos fine smaller servos can marginal application word marginal important effect Im talking about may show up until battery gets down some otherwise acceptable level discharge maybe doesnt show up operating ground does flight loads surfaces draw little current battery short its things can happen everything seems perfect shape work being done sort problem Bill Hershberger example has done lot design work prevent interaction between servos decoders receivers new receivers coming along will have problem marginally Thats great what about us cant afford buy new gear time fairly simple inexpensive way avoid problem Notice said avoid cure interaction talking about occurring because glitches power supply line provide another source power receiver wont stop glitches will keep getting receiver via power supply Providing another power source simply means carrying second battery connecting system together shown diagrams second battery doesnt have big standard 500mAh flight battery will fine can use power smaller servos used light loads like throttle some disadvantages course will need either extra switch remember turn both good quality threepole switch will need some special cables little complicated Y harness youve got another battery keep charged opinion advantages far out weigh disadvantages An example such system installation m Stinson Voyager Im actually using three 500mAh batteries two 20H aileron servos 20H elevator rudder servos third powering receiver bantam-size flap throttle ignition servos recommend arrangement body 500mAh batteries can handle peak current involved future installations will using 1 2Ah packs place first two small batteries receiver am using has given good service several years small models first time started drive GRISH LARGE Plasticote Propeller new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger yet thinner best efficiency 24 x 9 Propeller $20 HARDER LIGHTER STIFFER Other sizes will soon available 110 Model Aviation RC Giant Scale/Beckman Continued page 49 AT YOUR DEALER GRISH BROS ST JOHN IND 46373 20H servos however trouble large servo several small ones everything fine batteries fresh Add another large servo let batteries drop off bit everything started jittering range dropped off drastically split battery arrangement system has solid rock Incidentally Im also using long servo cables plane aileron servos end about five feet cable use three-conductor shielded cable shield grounded receiver end So far have seen no indica tion problems despite dire predic tions Ceconite covering Ceconite has become widely used fabric full-scale aircraft several fabrics somewhat similar Ceconite have used Giant Scale applications really match its features important advantages true Ceconite its controlled shrinkage heat amount shrinkage proportional heat applied maximum 10% 400W However shrinking process doesnt start until reach 2000 means dont have worry about unwanted shrinkage hot day least Pm going out onto 2000 runway among other things Ceconite FAA approved Genuine Ceconite fabric now available un der name Ceconite H/C light weight grade used control surfaces fullscale aircraft Its closer weave nice quarterscale approximation standard grade used purposes result extremely realistic fabric Giant Scale applications material available Jerry Nelson & CoinContinued page 114 Winning Ideas FOURMOST FUEL MANIFOLD 10 SEWN HIFUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize Ii 10 PRICE $150 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming Positive Airborn Shutoff % 10PRICE $125PRICE $420 % AND V 00STRUT FAIRINGS Comesintwo oockgft 023 Lengths Two Sizes coammg% lD AWYor 10La ge Fuel F tt ng Set fZSze IDPRICE $200 Packaged 2 Ft SizePRICE /1 Tee 1 E bow 1 Un 1 Pug PRICE $2502 lengths eithbr size $2 70so h Made FwW Foe Pins Poyc hyena FUR~T Send SASE Complete Information 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 GET ORGANIZED Hares set 4 sturdy fdes froMs over 4 years favorite 8r ou5uzrneS 4 MAO FILES $495 Send 5490 ytus St 00 puSfaee ftaodfrnt DON INDUSTRIES po sox 3M-K DOVER NH 03520 550* WOODEN BEAM BALANCE PLAN SET STEP NY STEP ErtOTOS E tLLuoTnuTIuNS STICE OS-TEMPLATES S SA0ATEO SCALE Mj MICRO-AIBEo soy tl2e-P EYICI-EAtYJO W May 1982111 SAILPLANE COMPONENTS CREATE YOUR OWN SUPER GLIDER STAB FOAM CORES OWING FOAM CORES Rudder & Fin Cores Floater Thermal & Slope WING RODS Wing Tongue Kits COVERING MATERIALS White skin & Lustroleen 0 FUSELAGES LUSTROLEEN 2 Meter Standard Open & Scale FOR HI JOHNSONS PORTFOLIO PRICE SHEET & ORDER FORM about sailplane construction & design using foam & plastic SEND $250 CHECK OR MO CA RES ADD SALES TAX CampiatalyWith EaginWith Radio Alapian Finlaitad Insialled1991119 TanAr$18995$28995950995 Olynlyit 9901249529995 EZ Fl129951999542995 ii pany 3510 San Mateo Avenue Reno NV 89509 Jerry Nelson certainly new name modeling has active competitor innovator hobby years first met Jerry about 25 years ago early teens first getting started Radio Control modeling went instrumental estab lishing some popular todays RC activities has associated busi ness end hobby adult life now involved Giant Scale new enter prise directed toward supplying some needs use Ceconite R/C Jerry has available adhesive unique water-base filler used full-scale aircraft carry FAA approvaL near future will offering aircraft-quality fiberglass cloth also drawn full-scale use just proof fact Giant Scale birds closer real aircraft models Jerry will have additional offerings Giant Scaler starting plans -scale Super Cub -scale Corby Starlet CJ-1 wish him luck knowing Jerry Ill expect see lot useful items him now concentrating Giant Scale Fly-in dates being written January snow ground like think about temperature hovering around zero Im holed up shop building like mad cabin fever mounting ray sun shine information surfacing about coming flying season April 16-18 Arkansas Jumbo Fun Fly Petit Jean Mountain State Park Morrilton AR sponsored Budweiser first what should become major annual event Get details Wendel Glenda Roberts *9 Timber Valley Cove Little Rock AR 72204 Since time will short time read might want call 501 224-4278 July 1-5 Bawlf Alberta Canada Dick Phillips Big Beautiful man behind just moved area already has locals marching drum description field facilities sounds great info write Dick Phillips 9 Geneva Crescent St Albert Alberta Canada T8N 0Z3 Remember have use US stamp price marked C things wont accepted Canadian postal system July 10-11 STARS Spangled Scale Rally Olean NY STARS annual Scale rally open Scale RC model over years has become prestigious Giant Scale 114 Model Aviation F g rLiqhr ox eddfa4fE 74Idez4 $ 99p0 VISA DELIVERED Four Folding Legs Wing 8 Fuselage Holders Add $400 Shipping calif 6% Tax RAC Products408 274-1915 3200 Knightswood Way S San Jose CA 95148 SUPERwings A DIVISION OF HI JOHNSON MODEL PRODUCTS 11015 GLENOAKS BLVD PACOIMA CA 91331 Columbia Model Crafts proudly introduces its expanded line professionally finished aircraft quality conscious modeler flainAir 40 powered high-wing airplane Northeast Aerodynamics 58 wingspan wood covered Monokote 4-channel wheels motor mount piece hinged wing Acrobatic yet stable Olympic 650 Airtronics superb 2-meter sailplane plug-in wing panels covered Monokote surfaces hinged pushrods installed EZ Fli Cabin model 51 wing 25 through 35 engines 4-channels wheels motor mount piece wing Excellent sport plane See RC Modeler review January 1982 feature OS engines radios Airtronics World Futaba Columbia Model Crafts 9366 Sharp Antler ______________________ Columbia Maryland 21045 _______________________301 596-0134 otter beaThfuI Plan Sets byatidreg Super Buccaneer 88 Wingspan 5 Engines Pias Set ecTFt $1795 3/4 size scale sersios ctassic designR/C Super Buccaneer 20 Custom Desron Seurce otters tee finest layout #RCFF-4 Plans make yoor own k Petonoabte $100 Pray Set $1295 erreos brochure Add $200 tar $ottea Fran C Marroo Tone affair East Olean airport closed full-scale traffic two-day affair both grass paved runways available George Privateer Fortune Drive Allegany NY 14706 can give details Yes complete address August 2 1-22 Hill Country Morgan Hill California years Hill Country Flyers Mammoth Scale Fly-in week two later usual promises same out standing event past Bob Morse director year can provide details Write Bob 3351 Pruneridge Ave Santa Clara CA 95051 September 4-6 Merwin Ranch Sacramento California doubt finest flying site have ever seen Grass-covered billiard-table flat dimensions measured feet yards miles Write Bob Rhoads 9100 La Serena Drive Fair Oaks CA 95628 details Keep touch Ill back next month Bob Beckman 8248 Holly Grove Ct Manas sas VA 22110 Seamaster Willard Continued page 32 maneuverable throttled back cruising power easy fly sport trainers market todayand easier some No primary trainer beginners sport flier sport trainer have previously built flown simple primary trainer want step up notch Theres old sayingTry youll like doesnt really apply Seamaster Sport 40 What does Build fly Youll love itt Buy DIRECT SAVE OVER 50% COMPLETE MODELERS ASSORTMENT OF FASTENERS MAY 1680* NEW*ATYOURFINGERTIPS*#*~e** ** SHOWED PRtCE SURVEY* ALLOY PARTS * NEVER OFFERED BEFORE**NO ORGANIZER AT OVER FtFTY* * NO MORE SPECtAL TRtPS TO THE**OOLLARS THAN TWtCEOUR* * HOBBY STORE tFtTtS OPENS** 495* RSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST PC5 256 3 t6 SOCKET HEAD CAP SCREW 25 2-56 1 4 SOCKET HEAD CAP SCREW 25 256 1 2 SOCKET HEAD CAP SCREW 25 4-40 1 4 SOCKET HEAD CAP SCREW 20 440 1 2 SOCKET HEAD CAP SCREW 20 468 34 SOCKET HEAD CAP SCREW 20 440 1 SOCKET HEAD CAP SCREW 20 632 1 4 SOCKET HEAD CAP SCREW 15 632 1 2 SOCKET HEAD CAP SCREW iS 632 34 SOCKET HEAD CAP SCREW 15 632 1 SOCKET HEAD CAP SCREW iS $-35 1 r SOCKET HEAD CAP SCREW IS 632 2 SOCKET HEAD CAP SCREW 15 FLAT WASHERS SAF ZtNC PLATED 4 6 NYLON NSERT LOCK NUTS ZINC PLATED 2-56 440 632 TS 40 So 75 65 NI TOTAL PCS 735 KITSCOME COMPLETE WITH 10 COMPARTMENT HEAVY DUTY NDUSTRIAL ORGANtZER ONLY $2495 __________________THESE SUPERB NEW G-MARK THROTTLE-EQUI MULTI-CYLINDER R/C ENGINES OFFER SCALE APPEARANCE & PERFORM ARE EASY STARTING WITH SMOOTH OPERATION & EXCELLENT TOP 122 R/C30 RIO TWIN TWIN iu305 SCYL 2800-14000RPM2s R/C $9995 z0015000 RPM 1095 OZ $17495 THROTTLE MUFFLER AND BALL BEARINGS STD ALL ENGINES OZ 495 OZ GLOW PLUGS NOT INCLUDED 2500-15000 RPM Calif add Sales Tax Shipping $300 noCODs VISA t Brochure 61 US $170 Foreign Add 41/2% Visa er Card Std Dealer Distributor Discounts L 13400-26 Saticoy StreetNortH Hollywood Calif 9160512131 _______ May1982 115 t1tI Lah1 1 In/lI Ill - 5o5soJ~jIjj alhlAljijil -. iJ HSA4NI ALLOY ASSORTMENT SHOWN Mail Order To* Please include $250 tar postage HARDWARE SYSTEMS * handling Add $150 tar coo 1428 WashIngton Ave S@* Minn residents add 5% sales tax Eden Prairie NIKfl * Orders will shipped withing 48 Phone 81294I15T hours 1 CANNONR/C MULTI ENGINES RIC SYSTEMS cap Is allow access tor remov ing steerable nose gear Steering pushrod sealed against water
Edition: Model Aviation - 1982/05
Page Numbers: 48, 49, 110, 111, 114, 115
Radio Control GIANT SCALE Bob Beckman ISOLATED SERVO BATTERIES Anyone getting Giant Scale soon learns need heavy duty servos have power move large control suffaces never get thing nothing power gets servo form high current flow battery turn leads need batteries higher capacity 500mAh battery can power servos standard RC model several flights might make through thefirst flight Giant Scale aircraft Big l200mAh 1 2Ah batteries what usually see big birds wise modeler keeps close eye condition another aspect situation well known understood high current being drawn battery ouput voltage battery dragged down less charge battery contains greater will change voltage Eventually battery could get point its output voltage drops low cant force enough current through motor make turn over what happening car battery down get sickening click turn key course youre going get point servosbecause long before receiver has given up youre looking pile splinters does receiver give up Well youre like 9944% modelers out youre carrying battery power flight pack bird same battery having its nut48 Model Aviation beautiful plane perfect day look flying alto Dick Enos Curtiss Goshawk faces out across almost limitless Merwin Ranch field California late afternoon sun glints wingis really model Maybe hell bring Vega years Sacramento Giant Scale Fly-in over Labor Day weekend Bob has must-list meets column Youll see real grabbers great fly-ins Don Godfreys B-25 Jerry Nelsons Super Cub covered Ceconite R/C Jerrys new climbs out after takeoff last years STARS Spangled Rally 82 company sells powered special 18 ci Kawasaki C B event Olean NY scheduled July 10-11 See Associates Plans will available soon details column put voltage dragged down servo current supplying power receiver Now receivers going knocked out little variation supply voltage After battery-powered devices have designed operate over normal range changes battery voltage battery discharges fact receivers will operate quite nicely three cells usual four-cell pack gives us servo power margin error receiver margin standard-size models Giant Scale aircraft its larger control surfaces much larger servo loading margin starts get mighty thin Wait minute say thats put big battery should have margin back Well yes no long-term basis yes big battery gives us capacity need wont discharge battery too fast would small instantaneous basis however may still trouble highest current drain occurs servo first starting up addition control surface load servo takes lot current get servos motor running As soon motor starts turning current drops power level required move control first surge current very short can also very high larger servos can order two amperes Since short total drain batterys capacity small lasts can drag battery voltage down volt What wind up high-amplitude negative spike supply voltage line Now receiver can shrug off gradual change volt DC supply level change talking about can look very much like signals receiver supposed get whats looks like very strong signal So what can happen spike caused servo starting gets converted signal starts another servo running causes spike starts another etc can wind up servos uttering back forth driving limits legitimate signals blocked out people design radios know about things like course have designed receivers decoders minimize kind situation receivers using Continued page 110 May 198249 Bob Morse props Kawasaki F4B-2 1981 HIll Country Flyers Mammoth Scale Fly-in Bob director 1982 edition coming up August 21-22 #3 #4 #6 #8 SIZE #2 #3 #4 #6 #8 SIZE #2ii #312 #412 #612 #812 Remember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE yourfree catalog todayDEALERS INVITED ERO TREND PRODUCTS 44W Prospectt NawI-I~n CT06515 T today designed before started hanging big servos fine smaller servos can marginal application word marginal important effect Im talking about may show up until battery gets down some otherwise acceptable level discharge maybe doesnt show up operating ground does flight loads surfaces draw little current battery short its things can happen everything seems perfect shape work being done sort problem Bill Hershberger example has done lot design work prevent interaction between servos decoders receivers new receivers coming along will have problem marginally Thats great what about us cant afford buy new gear time fairly simple inexpensive way avoid problem Notice said avoid cure interaction talking about occurring because glitches power supply line provide another source power receiver wont stop glitches will keep getting receiver via power supply Providing another power source simply means carrying second battery connecting system together shown diagrams second battery doesnt have big standard 500mAh flight battery will fine can use power smaller servos used light loads like throttle some disadvantages course will need either extra switch remember turn both good quality threepole switch will need some special cables little complicated Y harness youve got another battery keep charged opinion advantages far out weigh disadvantages An example such system installation m Stinson Voyager Im actually using three 500mAh batteries two 20H aileron servos 20H elevator rudder servos third powering receiver bantam-size flap throttle ignition servos recommend arrangement body 500mAh batteries can handle peak current involved future installations will using 1 2Ah packs place first two small batteries receiver am using has given good service several years small models first time started drive GRISH LARGE Plasticote Propeller new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger yet thinner best efficiency 24 x 9 Propeller $20 HARDER LIGHTER STIFFER Other sizes will soon available 110 Model Aviation RC Giant Scale/Beckman Continued page 49 AT YOUR DEALER GRISH BROS ST JOHN IND 46373 20H servos however trouble large servo several small ones everything fine batteries fresh Add another large servo let batteries drop off bit everything started jittering range dropped off drastically split battery arrangement system has solid rock Incidentally Im also using long servo cables plane aileron servos end about five feet cable use three-conductor shielded cable shield grounded receiver end So far have seen no indica tion problems despite dire predic tions Ceconite covering Ceconite has become widely used fabric full-scale aircraft several fabrics somewhat similar Ceconite have used Giant Scale applications really match its features important advantages true Ceconite its controlled shrinkage heat amount shrinkage proportional heat applied maximum 10% 400W However shrinking process doesnt start until reach 2000 means dont have worry about unwanted shrinkage hot day least Pm going out onto 2000 runway among other things Ceconite FAA approved Genuine Ceconite fabric now available un der name Ceconite H/C light weight grade used control surfaces fullscale aircraft Its closer weave nice quarterscale approximation standard grade used purposes result extremely realistic fabric Giant Scale applications material available Jerry Nelson & CoinContinued page 114 Winning Ideas FOURMOST FUEL MANIFOLD 10 SEWN HIFUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize Ii 10 PRICE $150 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming Positive Airborn Shutoff % 10PRICE $125PRICE $420 % AND V 00STRUT FAIRINGS Comesintwo oockgft 023 Lengths Two Sizes coammg% lD AWYor 10La ge Fuel F tt ng Set fZSze IDPRICE $200 Packaged 2 Ft SizePRICE /1 Tee 1 E bow 1 Un 1 Pug PRICE $2502 lengths eithbr size $2 70so h Made FwW Foe Pins Poyc hyena FUR~T Send SASE Complete Information 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 GET ORGANIZED Hares set 4 sturdy fdes froMs over 4 years favorite 8r ou5uzrneS 4 MAO FILES $495 Send 5490 ytus St 00 puSfaee ftaodfrnt DON INDUSTRIES po sox 3M-K DOVER NH 03520 550* WOODEN BEAM BALANCE PLAN SET STEP NY STEP ErtOTOS E tLLuoTnuTIuNS STICE OS-TEMPLATES S SA0ATEO SCALE Mj MICRO-AIBEo soy tl2e-P EYICI-EAtYJO W May 1982111 SAILPLANE COMPONENTS CREATE YOUR OWN SUPER GLIDER STAB FOAM CORES OWING FOAM CORES Rudder & Fin Cores Floater Thermal & Slope WING RODS Wing Tongue Kits COVERING MATERIALS White skin & Lustroleen 0 FUSELAGES LUSTROLEEN 2 Meter Standard Open & Scale FOR HI JOHNSONS PORTFOLIO PRICE SHEET & ORDER FORM about sailplane construction & design using foam & plastic SEND $250 CHECK OR MO CA RES ADD SALES TAX CampiatalyWith EaginWith Radio Alapian Finlaitad Insialled1991119 TanAr$18995$28995950995 Olynlyit 9901249529995 EZ Fl129951999542995 ii pany 3510 San Mateo Avenue Reno NV 89509 Jerry Nelson certainly new name modeling has active competitor innovator hobby years first met Jerry about 25 years ago early teens first getting started Radio Control modeling went instrumental estab lishing some popular todays RC activities has associated busi ness end hobby adult life now involved Giant Scale new enter prise directed toward supplying some needs use Ceconite R/C Jerry has available adhesive unique water-base filler used full-scale aircraft carry FAA approvaL near future will offering aircraft-quality fiberglass cloth also drawn full-scale use just proof fact Giant Scale birds closer real aircraft models Jerry will have additional offerings Giant Scaler starting plans -scale Super Cub -scale Corby Starlet CJ-1 wish him luck knowing Jerry Ill expect see lot useful items him now concentrating Giant Scale Fly-in dates being written January snow ground like think about temperature hovering around zero Im holed up shop building like mad cabin fever mounting ray sun shine information surfacing about coming flying season April 16-18 Arkansas Jumbo Fun Fly Petit Jean Mountain State Park Morrilton AR sponsored Budweiser first what should become major annual event Get details Wendel Glenda Roberts *9 Timber Valley Cove Little Rock AR 72204 Since time will short time read might want call 501 224-4278 July 1-5 Bawlf Alberta Canada Dick Phillips Big Beautiful man behind just moved area already has locals marching drum description field facilities sounds great info write Dick Phillips 9 Geneva Crescent St Albert Alberta Canada T8N 0Z3 Remember have use US stamp price marked C things wont accepted Canadian postal system July 10-11 STARS Spangled Scale Rally Olean NY STARS annual Scale rally open Scale RC model over years has become prestigious Giant Scale 114 Model Aviation F g rLiqhr ox eddfa4fE 74Idez4 $ 99p0 VISA DELIVERED Four Folding Legs Wing 8 Fuselage Holders Add $400 Shipping calif 6% Tax RAC Products408 274-1915 3200 Knightswood Way S San Jose CA 95148 SUPERwings A DIVISION OF HI JOHNSON MODEL PRODUCTS 11015 GLENOAKS BLVD PACOIMA CA 91331 Columbia Model Crafts proudly introduces its expanded line professionally finished aircraft quality conscious modeler flainAir 40 powered high-wing airplane Northeast Aerodynamics 58 wingspan wood covered Monokote 4-channel wheels motor mount piece hinged wing Acrobatic yet stable Olympic 650 Airtronics superb 2-meter sailplane plug-in wing panels covered Monokote surfaces hinged pushrods installed EZ Fli Cabin model 51 wing 25 through 35 engines 4-channels wheels motor mount piece wing Excellent sport plane See RC Modeler review January 1982 feature OS engines radios Airtronics World Futaba Columbia Model Crafts 9366 Sharp Antler ______________________ Columbia Maryland 21045 _______________________301 596-0134 otter beaThfuI Plan Sets byatidreg Super Buccaneer 88 Wingspan 5 Engines Pias Set ecTFt $1795 3/4 size scale sersios ctassic designR/C Super Buccaneer 20 Custom Desron Seurce otters tee finest layout #RCFF-4 Plans make yoor own k Petonoabte $100 Pray Set $1295 erreos brochure Add $200 tar $ottea Fran C Marroo Tone affair East Olean airport closed full-scale traffic two-day affair both grass paved runways available George Privateer Fortune Drive Allegany NY 14706 can give details Yes complete address August 2 1-22 Hill Country Morgan Hill California years Hill Country Flyers Mammoth Scale Fly-in week two later usual promises same out standing event past Bob Morse director year can provide details Write Bob 3351 Pruneridge Ave Santa Clara CA 95051 September 4-6 Merwin Ranch Sacramento California doubt finest flying site have ever seen Grass-covered billiard-table flat dimensions measured feet yards miles Write Bob Rhoads 9100 La Serena Drive Fair Oaks CA 95628 details Keep touch Ill back next month Bob Beckman 8248 Holly Grove Ct Manas sas VA 22110 Seamaster Willard Continued page 32 maneuverable throttled back cruising power easy fly sport trainers market todayand easier some No primary trainer beginners sport flier sport trainer have previously built flown simple primary trainer want step up notch Theres old sayingTry youll like doesnt really apply Seamaster Sport 40 What does Build fly Youll love itt Buy DIRECT SAVE OVER 50% COMPLETE MODELERS ASSORTMENT OF FASTENERS MAY 1680* NEW*ATYOURFINGERTIPS*#*~e** ** SHOWED PRtCE SURVEY* ALLOY PARTS * NEVER OFFERED BEFORE**NO ORGANIZER AT OVER FtFTY* * NO MORE SPECtAL TRtPS TO THE**OOLLARS THAN TWtCEOUR* * HOBBY STORE tFtTtS OPENS** 495* RSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST PC5 256 3 t6 SOCKET HEAD CAP SCREW 25 2-56 1 4 SOCKET HEAD CAP SCREW 25 256 1 2 SOCKET HEAD CAP SCREW 25 4-40 1 4 SOCKET HEAD CAP SCREW 20 440 1 2 SOCKET HEAD CAP SCREW 20 468 34 SOCKET HEAD CAP SCREW 20 440 1 SOCKET HEAD CAP SCREW 20 632 1 4 SOCKET HEAD CAP SCREW 15 632 1 2 SOCKET HEAD CAP SCREW iS 632 34 SOCKET HEAD CAP SCREW 15 632 1 SOCKET HEAD CAP SCREW iS $-35 1 r SOCKET HEAD CAP SCREW IS 632 2 SOCKET HEAD CAP SCREW 15 FLAT WASHERS SAF ZtNC PLATED 4 6 NYLON NSERT LOCK NUTS ZINC PLATED 2-56 440 632 TS 40 So 75 65 NI TOTAL PCS 735 KITSCOME COMPLETE WITH 10 COMPARTMENT HEAVY DUTY NDUSTRIAL ORGANtZER ONLY $2495 __________________THESE SUPERB NEW G-MARK THROTTLE-EQUI MULTI-CYLINDER R/C ENGINES OFFER SCALE APPEARANCE & PERFORM ARE EASY STARTING WITH SMOOTH OPERATION & EXCELLENT TOP 122 R/C30 RIO TWIN TWIN iu305 SCYL 2800-14000RPM2s R/C $9995 z0015000 RPM 1095 OZ $17495 THROTTLE MUFFLER AND BALL BEARINGS STD ALL ENGINES OZ 495 OZ GLOW PLUGS NOT INCLUDED 2500-15000 RPM Calif add Sales Tax Shipping $300 noCODs VISA t Brochure 61 US $170 Foreign Add 41/2% Visa er Card Std Dealer Distributor Discounts L 13400-26 Saticoy StreetNortH Hollywood Calif 9160512131 _______ May1982 115 t1tI Lah1 1 In/lI Ill - 5o5soJ~jIjj alhlAljijil -. iJ HSA4NI ALLOY ASSORTMENT SHOWN Mail Order To* Please include $250 tar postage HARDWARE SYSTEMS * handling Add $150 tar coo 1428 WashIngton Ave S@* Minn residents add 5% sales tax Eden Prairie NIKfl * Orders will shipped withing 48 Phone 81294I15T hours 1 CANNONR/C MULTI ENGINES RIC SYSTEMS cap Is allow access tor remov ing steerable nose gear Steering pushrod sealed against water
Edition: Model Aviation - 1982/05
Page Numbers: 48, 49, 110, 111, 114, 115
Radio Control GIANT SCALE Bob Beckman ISOLATED SERVO BATTERIES Anyone getting Giant Scale soon learns need heavy duty servos have power move large control suffaces never get thing nothing power gets servo form high current flow battery turn leads need batteries higher capacity 500mAh battery can power servos standard RC model several flights might make through thefirst flight Giant Scale aircraft Big l200mAh 1 2Ah batteries what usually see big birds wise modeler keeps close eye condition another aspect situation well known understood high current being drawn battery ouput voltage battery dragged down less charge battery contains greater will change voltage Eventually battery could get point its output voltage drops low cant force enough current through motor make turn over what happening car battery down get sickening click turn key course youre going get point servosbecause long before receiver has given up youre looking pile splinters does receiver give up Well youre like 9944% modelers out youre carrying battery power flight pack bird same battery having its nut48 Model Aviation beautiful plane perfect day look flying alto Dick Enos Curtiss Goshawk faces out across almost limitless Merwin Ranch field California late afternoon sun glints wingis really model Maybe hell bring Vega years Sacramento Giant Scale Fly-in over Labor Day weekend Bob has must-list meets column Youll see real grabbers great fly-ins Don Godfreys B-25 Jerry Nelsons Super Cub covered Ceconite R/C Jerrys new climbs out after takeoff last years STARS Spangled Rally 82 company sells powered special 18 ci Kawasaki C B event Olean NY scheduled July 10-11 See Associates Plans will available soon details column put voltage dragged down servo current supplying power receiver Now receivers going knocked out little variation supply voltage After battery-powered devices have designed operate over normal range changes battery voltage battery discharges fact receivers will operate quite nicely three cells usual four-cell pack gives us servo power margin error receiver margin standard-size models Giant Scale aircraft its larger control surfaces much larger servo loading margin starts get mighty thin Wait minute say thats put big battery should have margin back Well yes no long-term basis yes big battery gives us capacity need wont discharge battery too fast would small instantaneous basis however may still trouble highest current drain occurs servo first starting up addition control surface load servo takes lot current get servos motor running As soon motor starts turning current drops power level required move control first surge current very short can also very high larger servos can order two amperes Since short total drain batterys capacity small lasts can drag battery voltage down volt What wind up high-amplitude negative spike supply voltage line Now receiver can shrug off gradual change volt DC supply level change talking about can look very much like signals receiver supposed get whats looks like very strong signal So what can happen spike caused servo starting gets converted signal starts another servo running causes spike starts another etc can wind up servos uttering back forth driving limits legitimate signals blocked out people design radios know about things like course have designed receivers decoders minimize kind situation receivers using Continued page 110 May 198249 Bob Morse props Kawasaki F4B-2 1981 HIll Country Flyers Mammoth Scale Fly-in Bob director 1982 edition coming up August 21-22 #3 #4 #6 #8 SIZE #2 #3 #4 #6 #8 SIZE #2ii #312 #412 #612 #812 Remember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE yourfree catalog todayDEALERS INVITED ERO TREND PRODUCTS 44W Prospectt NawI-I~n CT06515 T today designed before started hanging big servos fine smaller servos can marginal application word marginal important effect Im talking about may show up until battery gets down some otherwise acceptable level discharge maybe doesnt show up operating ground does flight loads surfaces draw little current battery short its things can happen everything seems perfect shape work being done sort problem Bill Hershberger example has done lot design work prevent interaction between servos decoders receivers new receivers coming along will have problem marginally Thats great what about us cant afford buy new gear time fairly simple inexpensive way avoid problem Notice said avoid cure interaction talking about occurring because glitches power supply line provide another source power receiver wont stop glitches will keep getting receiver via power supply Providing another power source simply means carrying second battery connecting system together shown diagrams second battery doesnt have big standard 500mAh flight battery will fine can use power smaller servos used light loads like throttle some disadvantages course will need either extra switch remember turn both good quality threepole switch will need some special cables little complicated Y harness youve got another battery keep charged opinion advantages far out weigh disadvantages An example such system installation m Stinson Voyager Im actually using three 500mAh batteries two 20H aileron servos 20H elevator rudder servos third powering receiver bantam-size flap throttle ignition servos recommend arrangement body 500mAh batteries can handle peak current involved future installations will using 1 2Ah packs place first two small batteries receiver am using has given good service several years small models first time started drive GRISH LARGE Plasticote Propeller new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger yet thinner best efficiency 24 x 9 Propeller $20 HARDER LIGHTER STIFFER Other sizes will soon available 110 Model Aviation RC Giant Scale/Beckman Continued page 49 AT YOUR DEALER GRISH BROS ST JOHN IND 46373 20H servos however trouble large servo several small ones everything fine batteries fresh Add another large servo let batteries drop off bit everything started jittering range dropped off drastically split battery arrangement system has solid rock Incidentally Im also using long servo cables plane aileron servos end about five feet cable use three-conductor shielded cable shield grounded receiver end So far have seen no indica tion problems despite dire predic tions Ceconite covering Ceconite has become widely used fabric full-scale aircraft several fabrics somewhat similar Ceconite have used Giant Scale applications really match its features important advantages true Ceconite its controlled shrinkage heat amount shrinkage proportional heat applied maximum 10% 400W However shrinking process doesnt start until reach 2000 means dont have worry about unwanted shrinkage hot day least Pm going out onto 2000 runway among other things Ceconite FAA approved Genuine Ceconite fabric now available un der name Ceconite H/C light weight grade used control surfaces fullscale aircraft Its closer weave nice quarterscale approximation standard grade used purposes result extremely realistic fabric Giant Scale applications material available Jerry Nelson & CoinContinued page 114 Winning Ideas FOURMOST FUEL MANIFOLD 10 SEWN HIFUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize Ii 10 PRICE $150 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming Positive Airborn Shutoff % 10PRICE $125PRICE $420 % AND V 00STRUT FAIRINGS Comesintwo oockgft 023 Lengths Two Sizes coammg% lD AWYor 10La ge Fuel F tt ng Set fZSze IDPRICE $200 Packaged 2 Ft SizePRICE /1 Tee 1 E bow 1 Un 1 Pug PRICE $2502 lengths eithbr size $2 70so h Made FwW Foe Pins Poyc hyena FUR~T Send SASE Complete Information 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 GET ORGANIZED Hares set 4 sturdy fdes froMs over 4 years favorite 8r ou5uzrneS 4 MAO FILES $495 Send 5490 ytus St 00 puSfaee ftaodfrnt DON INDUSTRIES po sox 3M-K DOVER NH 03520 550* WOODEN BEAM BALANCE PLAN SET STEP NY STEP ErtOTOS E tLLuoTnuTIuNS STICE OS-TEMPLATES S SA0ATEO SCALE Mj MICRO-AIBEo soy tl2e-P EYICI-EAtYJO W May 1982111 SAILPLANE COMPONENTS CREATE YOUR OWN SUPER GLIDER STAB FOAM CORES OWING FOAM CORES Rudder & Fin Cores Floater Thermal & Slope WING RODS Wing Tongue Kits COVERING MATERIALS White skin & Lustroleen 0 FUSELAGES LUSTROLEEN 2 Meter Standard Open & Scale FOR HI JOHNSONS PORTFOLIO PRICE SHEET & ORDER FORM about sailplane construction & design using foam & plastic SEND $250 CHECK OR MO CA RES ADD SALES TAX CampiatalyWith EaginWith Radio Alapian Finlaitad Insialled1991119 TanAr$18995$28995950995 Olynlyit 9901249529995 EZ Fl129951999542995 ii pany 3510 San Mateo Avenue Reno NV 89509 Jerry Nelson certainly new name modeling has active competitor innovator hobby years first met Jerry about 25 years ago early teens first getting started Radio Control modeling went instrumental estab lishing some popular todays RC activities has associated busi ness end hobby adult life now involved Giant Scale new enter prise directed toward supplying some needs use Ceconite R/C Jerry has available adhesive unique water-base filler used full-scale aircraft carry FAA approvaL near future will offering aircraft-quality fiberglass cloth also drawn full-scale use just proof fact Giant Scale birds closer real aircraft models Jerry will have additional offerings Giant Scaler starting plans -scale Super Cub -scale Corby Starlet CJ-1 wish him luck knowing Jerry Ill expect see lot useful items him now concentrating Giant Scale Fly-in dates being written January snow ground like think about temperature hovering around zero Im holed up shop building like mad cabin fever mounting ray sun shine information surfacing about coming flying season April 16-18 Arkansas Jumbo Fun Fly Petit Jean Mountain State Park Morrilton AR sponsored Budweiser first what should become major annual event Get details Wendel Glenda Roberts *9 Timber Valley Cove Little Rock AR 72204 Since time will short time read might want call 501 224-4278 July 1-5 Bawlf Alberta Canada Dick Phillips Big Beautiful man behind just moved area already has locals marching drum description field facilities sounds great info write Dick Phillips 9 Geneva Crescent St Albert Alberta Canada T8N 0Z3 Remember have use US stamp price marked C things wont accepted Canadian postal system July 10-11 STARS Spangled Scale Rally Olean NY STARS annual Scale rally open Scale RC model over years has become prestigious Giant Scale 114 Model Aviation F g rLiqhr ox eddfa4fE 74Idez4 $ 99p0 VISA DELIVERED Four Folding Legs Wing 8 Fuselage Holders Add $400 Shipping calif 6% Tax RAC Products408 274-1915 3200 Knightswood Way S San Jose CA 95148 SUPERwings A DIVISION OF HI JOHNSON MODEL PRODUCTS 11015 GLENOAKS BLVD PACOIMA CA 91331 Columbia Model Crafts proudly introduces its expanded line professionally finished aircraft quality conscious modeler flainAir 40 powered high-wing airplane Northeast Aerodynamics 58 wingspan wood covered Monokote 4-channel wheels motor mount piece hinged wing Acrobatic yet stable Olympic 650 Airtronics superb 2-meter sailplane plug-in wing panels covered Monokote surfaces hinged pushrods installed EZ Fli Cabin model 51 wing 25 through 35 engines 4-channels wheels motor mount piece wing Excellent sport plane See RC Modeler review January 1982 feature OS engines radios Airtronics World Futaba Columbia Model Crafts 9366 Sharp Antler ______________________ Columbia Maryland 21045 _______________________301 596-0134 otter beaThfuI Plan Sets byatidreg Super Buccaneer 88 Wingspan 5 Engines Pias Set ecTFt $1795 3/4 size scale sersios ctassic designR/C Super Buccaneer 20 Custom Desron Seurce otters tee finest layout #RCFF-4 Plans make yoor own k Petonoabte $100 Pray Set $1295 erreos brochure Add $200 tar $ottea Fran C Marroo Tone affair East Olean airport closed full-scale traffic two-day affair both grass paved runways available George Privateer Fortune Drive Allegany NY 14706 can give details Yes complete address August 2 1-22 Hill Country Morgan Hill California years Hill Country Flyers Mammoth Scale Fly-in week two later usual promises same out standing event past Bob Morse director year can provide details Write Bob 3351 Pruneridge Ave Santa Clara CA 95051 September 4-6 Merwin Ranch Sacramento California doubt finest flying site have ever seen Grass-covered billiard-table flat dimensions measured feet yards miles Write Bob Rhoads 9100 La Serena Drive Fair Oaks CA 95628 details Keep touch Ill back next month Bob Beckman 8248 Holly Grove Ct Manas sas VA 22110 Seamaster Willard Continued page 32 maneuverable throttled back cruising power easy fly sport trainers market todayand easier some No primary trainer beginners sport flier sport trainer have previously built flown simple primary trainer want step up notch Theres old sayingTry youll like doesnt really apply Seamaster Sport 40 What does Build fly Youll love itt Buy DIRECT SAVE OVER 50% COMPLETE MODELERS ASSORTMENT OF FASTENERS MAY 1680* NEW*ATYOURFINGERTIPS*#*~e** ** SHOWED PRtCE SURVEY* ALLOY PARTS * NEVER OFFERED BEFORE**NO ORGANIZER AT OVER FtFTY* * NO MORE SPECtAL TRtPS TO THE**OOLLARS THAN TWtCEOUR* * HOBBY STORE tFtTtS OPENS** 495* RSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST PC5 256 3 t6 SOCKET HEAD CAP SCREW 25 2-56 1 4 SOCKET HEAD CAP SCREW 25 256 1 2 SOCKET HEAD CAP SCREW 25 4-40 1 4 SOCKET HEAD CAP SCREW 20 440 1 2 SOCKET HEAD CAP SCREW 20 468 34 SOCKET HEAD CAP SCREW 20 440 1 SOCKET HEAD CAP SCREW 20 632 1 4 SOCKET HEAD CAP SCREW 15 632 1 2 SOCKET HEAD CAP SCREW iS 632 34 SOCKET HEAD CAP SCREW 15 632 1 SOCKET HEAD CAP SCREW iS $-35 1 r SOCKET HEAD CAP SCREW IS 632 2 SOCKET HEAD CAP SCREW 15 FLAT WASHERS SAF ZtNC PLATED 4 6 NYLON NSERT LOCK NUTS ZINC PLATED 2-56 440 632 TS 40 So 75 65 NI TOTAL PCS 735 KITSCOME COMPLETE WITH 10 COMPARTMENT HEAVY DUTY NDUSTRIAL ORGANtZER ONLY $2495 __________________THESE SUPERB NEW G-MARK THROTTLE-EQUI MULTI-CYLINDER R/C ENGINES OFFER SCALE APPEARANCE & PERFORM ARE EASY STARTING WITH SMOOTH OPERATION & EXCELLENT TOP 122 R/C30 RIO TWIN TWIN iu305 SCYL 2800-14000RPM2s R/C $9995 z0015000 RPM 1095 OZ $17495 THROTTLE MUFFLER AND BALL BEARINGS STD ALL ENGINES OZ 495 OZ GLOW PLUGS NOT INCLUDED 2500-15000 RPM Calif add Sales Tax Shipping $300 noCODs VISA t Brochure 61 US $170 Foreign Add 41/2% Visa er Card Std Dealer Distributor Discounts L 13400-26 Saticoy StreetNortH Hollywood Calif 9160512131 _______ May1982 115 t1tI Lah1 1 In/lI Ill - 5o5soJ~jIjj alhlAljijil -. iJ HSA4NI ALLOY ASSORTMENT SHOWN Mail Order To* Please include $250 tar postage HARDWARE SYSTEMS * handling Add $150 tar coo 1428 WashIngton Ave S@* Minn residents add 5% sales tax Eden Prairie NIKfl * Orders will shipped withing 48 Phone 81294I15T hours 1 CANNONR/C MULTI ENGINES RIC SYSTEMS cap Is allow access tor remov ing steerable nose gear Steering pushrod sealed against water
Edition: Model Aviation - 1982/05
Page Numbers: 48, 49, 110, 111, 114, 115
Radio Control GIANT SCALE Bob Beckman ISOLATED SERVO BATTERIES Anyone getting Giant Scale soon learns need heavy duty servos have power move large control suffaces never get thing nothing power gets servo form high current flow battery turn leads need batteries higher capacity 500mAh battery can power servos standard RC model several flights might make through thefirst flight Giant Scale aircraft Big l200mAh 1 2Ah batteries what usually see big birds wise modeler keeps close eye condition another aspect situation well known understood high current being drawn battery ouput voltage battery dragged down less charge battery contains greater will change voltage Eventually battery could get point its output voltage drops low cant force enough current through motor make turn over what happening car battery down get sickening click turn key course youre going get point servosbecause long before receiver has given up youre looking pile splinters does receiver give up Well youre like 9944% modelers out youre carrying battery power flight pack bird same battery having its nut48 Model Aviation beautiful plane perfect day look flying alto Dick Enos Curtiss Goshawk faces out across almost limitless Merwin Ranch field California late afternoon sun glints wingis really model Maybe hell bring Vega years Sacramento Giant Scale Fly-in over Labor Day weekend Bob has must-list meets column Youll see real grabbers great fly-ins Don Godfreys B-25 Jerry Nelsons Super Cub covered Ceconite R/C Jerrys new climbs out after takeoff last years STARS Spangled Rally 82 company sells powered special 18 ci Kawasaki C B event Olean NY scheduled July 10-11 See Associates Plans will available soon details column put voltage dragged down servo current supplying power receiver Now receivers going knocked out little variation supply voltage After battery-powered devices have designed operate over normal range changes battery voltage battery discharges fact receivers will operate quite nicely three cells usual four-cell pack gives us servo power margin error receiver margin standard-size models Giant Scale aircraft its larger control surfaces much larger servo loading margin starts get mighty thin Wait minute say thats put big battery should have margin back Well yes no long-term basis yes big battery gives us capacity need wont discharge battery too fast would small instantaneous basis however may still trouble highest current drain occurs servo first starting up addition control surface load servo takes lot current get servos motor running As soon motor starts turning current drops power level required move control first surge current very short can also very high larger servos can order two amperes Since short total drain batterys capacity small lasts can drag battery voltage down volt What wind up high-amplitude negative spike supply voltage line Now receiver can shrug off gradual change volt DC supply level change talking about can look very much like signals receiver supposed get whats looks like very strong signal So what can happen spike caused servo starting gets converted signal starts another servo running causes spike starts another etc can wind up servos uttering back forth driving limits legitimate signals blocked out people design radios know about things like course have designed receivers decoders minimize kind situation receivers using Continued page 110 May 198249 Bob Morse props Kawasaki F4B-2 1981 HIll Country Flyers Mammoth Scale Fly-in Bob director 1982 edition coming up August 21-22 #3 #4 #6 #8 SIZE #2 #3 #4 #6 #8 SIZE #2ii #312 #412 #612 #812 Remember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE yourfree catalog todayDEALERS INVITED ERO TREND PRODUCTS 44W Prospectt NawI-I~n CT06515 T today designed before started hanging big servos fine smaller servos can marginal application word marginal important effect Im talking about may show up until battery gets down some otherwise acceptable level discharge maybe doesnt show up operating ground does flight loads surfaces draw little current battery short its things can happen everything seems perfect shape work being done sort problem Bill Hershberger example has done lot design work prevent interaction between servos decoders receivers new receivers coming along will have problem marginally Thats great what about us cant afford buy new gear time fairly simple inexpensive way avoid problem Notice said avoid cure interaction talking about occurring because glitches power supply line provide another source power receiver wont stop glitches will keep getting receiver via power supply Providing another power source simply means carrying second battery connecting system together shown diagrams second battery doesnt have big standard 500mAh flight battery will fine can use power smaller servos used light loads like throttle some disadvantages course will need either extra switch remember turn both good quality threepole switch will need some special cables little complicated Y harness youve got another battery keep charged opinion advantages far out weigh disadvantages An example such system installation m Stinson Voyager Im actually using three 500mAh batteries two 20H aileron servos 20H elevator rudder servos third powering receiver bantam-size flap throttle ignition servos recommend arrangement body 500mAh batteries can handle peak current involved future installations will using 1 2Ah packs place first two small batteries receiver am using has given good service several years small models first time started drive GRISH LARGE Plasticote Propeller new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger yet thinner best efficiency 24 x 9 Propeller $20 HARDER LIGHTER STIFFER Other sizes will soon available 110 Model Aviation RC Giant Scale/Beckman Continued page 49 AT YOUR DEALER GRISH BROS ST JOHN IND 46373 20H servos however trouble large servo several small ones everything fine batteries fresh Add another large servo let batteries drop off bit everything started jittering range dropped off drastically split battery arrangement system has solid rock Incidentally Im also using long servo cables plane aileron servos end about five feet cable use three-conductor shielded cable shield grounded receiver end So far have seen no indica tion problems despite dire predic tions Ceconite covering Ceconite has become widely used fabric full-scale aircraft several fabrics somewhat similar Ceconite have used Giant Scale applications really match its features important advantages true Ceconite its controlled shrinkage heat amount shrinkage proportional heat applied maximum 10% 400W However shrinking process doesnt start until reach 2000 means dont have worry about unwanted shrinkage hot day least Pm going out onto 2000 runway among other things Ceconite FAA approved Genuine Ceconite fabric now available un der name Ceconite H/C light weight grade used control surfaces fullscale aircraft Its closer weave nice quarterscale approximation standard grade used purposes result extremely realistic fabric Giant Scale applications material available Jerry Nelson & CoinContinued page 114 Winning Ideas FOURMOST FUEL MANIFOLD 10 SEWN HIFUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize Ii 10 PRICE $150 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming Positive Airborn Shutoff % 10PRICE $125PRICE $420 % AND V 00STRUT FAIRINGS Comesintwo oockgft 023 Lengths Two Sizes coammg% lD AWYor 10La ge Fuel F tt ng Set fZSze IDPRICE $200 Packaged 2 Ft SizePRICE /1 Tee 1 E bow 1 Un 1 Pug PRICE $2502 lengths eithbr size $2 70so h Made FwW Foe Pins Poyc hyena FUR~T Send SASE Complete Information 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 GET ORGANIZED Hares set 4 sturdy fdes froMs over 4 years favorite 8r ou5uzrneS 4 MAO FILES $495 Send 5490 ytus St 00 puSfaee ftaodfrnt DON INDUSTRIES po sox 3M-K DOVER NH 03520 550* WOODEN BEAM BALANCE PLAN SET STEP NY STEP ErtOTOS E tLLuoTnuTIuNS STICE OS-TEMPLATES S SA0ATEO SCALE Mj MICRO-AIBEo soy tl2e-P EYICI-EAtYJO W May 1982111 SAILPLANE COMPONENTS CREATE YOUR OWN SUPER GLIDER STAB FOAM CORES OWING FOAM CORES Rudder & Fin Cores Floater Thermal & Slope WING RODS Wing Tongue Kits COVERING MATERIALS White skin & Lustroleen 0 FUSELAGES LUSTROLEEN 2 Meter Standard Open & Scale FOR HI JOHNSONS PORTFOLIO PRICE SHEET & ORDER FORM about sailplane construction & design using foam & plastic SEND $250 CHECK OR MO CA RES ADD SALES TAX CampiatalyWith EaginWith Radio Alapian Finlaitad Insialled1991119 TanAr$18995$28995950995 Olynlyit 9901249529995 EZ Fl129951999542995 ii pany 3510 San Mateo Avenue Reno NV 89509 Jerry Nelson certainly new name modeling has active competitor innovator hobby years first met Jerry about 25 years ago early teens first getting started Radio Control modeling went instrumental estab lishing some popular todays RC activities has associated busi ness end hobby adult life now involved Giant Scale new enter prise directed toward supplying some needs use Ceconite R/C Jerry has available adhesive unique water-base filler used full-scale aircraft carry FAA approvaL near future will offering aircraft-quality fiberglass cloth also drawn full-scale use just proof fact Giant Scale birds closer real aircraft models Jerry will have additional offerings Giant Scaler starting plans -scale Super Cub -scale Corby Starlet CJ-1 wish him luck knowing Jerry Ill expect see lot useful items him now concentrating Giant Scale Fly-in dates being written January snow ground like think about temperature hovering around zero Im holed up shop building like mad cabin fever mounting ray sun shine information surfacing about coming flying season April 16-18 Arkansas Jumbo Fun Fly Petit Jean Mountain State Park Morrilton AR sponsored Budweiser first what should become major annual event Get details Wendel Glenda Roberts *9 Timber Valley Cove Little Rock AR 72204 Since time will short time read might want call 501 224-4278 July 1-5 Bawlf Alberta Canada Dick Phillips Big Beautiful man behind just moved area already has locals marching drum description field facilities sounds great info write Dick Phillips 9 Geneva Crescent St Albert Alberta Canada T8N 0Z3 Remember have use US stamp price marked C things wont accepted Canadian postal system July 10-11 STARS Spangled Scale Rally Olean NY STARS annual Scale rally open Scale RC model over years has become prestigious Giant Scale 114 Model Aviation F g rLiqhr ox eddfa4fE 74Idez4 $ 99p0 VISA DELIVERED Four Folding Legs Wing 8 Fuselage Holders Add $400 Shipping calif 6% Tax RAC Products408 274-1915 3200 Knightswood Way S San Jose CA 95148 SUPERwings A DIVISION OF HI JOHNSON MODEL PRODUCTS 11015 GLENOAKS BLVD PACOIMA CA 91331 Columbia Model Crafts proudly introduces its expanded line professionally finished aircraft quality conscious modeler flainAir 40 powered high-wing airplane Northeast Aerodynamics 58 wingspan wood covered Monokote 4-channel wheels motor mount piece hinged wing Acrobatic yet stable Olympic 650 Airtronics superb 2-meter sailplane plug-in wing panels covered Monokote surfaces hinged pushrods installed EZ Fli Cabin model 51 wing 25 through 35 engines 4-channels wheels motor mount piece wing Excellent sport plane See RC Modeler review January 1982 feature OS engines radios Airtronics World Futaba Columbia Model Crafts 9366 Sharp Antler ______________________ Columbia Maryland 21045 _______________________301 596-0134 otter beaThfuI Plan Sets byatidreg Super Buccaneer 88 Wingspan 5 Engines Pias Set ecTFt $1795 3/4 size scale sersios ctassic designR/C Super Buccaneer 20 Custom Desron Seurce otters tee finest layout #RCFF-4 Plans make yoor own k Petonoabte $100 Pray Set $1295 erreos brochure Add $200 tar $ottea Fran C Marroo Tone affair East Olean airport closed full-scale traffic two-day affair both grass paved runways available George Privateer Fortune Drive Allegany NY 14706 can give details Yes complete address August 2 1-22 Hill Country Morgan Hill California years Hill Country Flyers Mammoth Scale Fly-in week two later usual promises same out standing event past Bob Morse director year can provide details Write Bob 3351 Pruneridge Ave Santa Clara CA 95051 September 4-6 Merwin Ranch Sacramento California doubt finest flying site have ever seen Grass-covered billiard-table flat dimensions measured feet yards miles Write Bob Rhoads 9100 La Serena Drive Fair Oaks CA 95628 details Keep touch Ill back next month Bob Beckman 8248 Holly Grove Ct Manas sas VA 22110 Seamaster Willard Continued page 32 maneuverable throttled back cruising power easy fly sport trainers market todayand easier some No primary trainer beginners sport flier sport trainer have previously built flown simple primary trainer want step up notch Theres old sayingTry youll like doesnt really apply Seamaster Sport 40 What does Build fly Youll love itt Buy DIRECT SAVE OVER 50% COMPLETE MODELERS ASSORTMENT OF FASTENERS MAY 1680* NEW*ATYOURFINGERTIPS*#*~e** ** SHOWED PRtCE SURVEY* ALLOY PARTS * NEVER OFFERED BEFORE**NO ORGANIZER AT OVER FtFTY* * NO MORE SPECtAL TRtPS TO THE**OOLLARS THAN TWtCEOUR* * HOBBY STORE tFtTtS OPENS** 495* RSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST PC5 256 3 t6 SOCKET HEAD CAP SCREW 25 2-56 1 4 SOCKET HEAD CAP SCREW 25 256 1 2 SOCKET HEAD CAP SCREW 25 4-40 1 4 SOCKET HEAD CAP SCREW 20 440 1 2 SOCKET HEAD CAP SCREW 20 468 34 SOCKET HEAD CAP SCREW 20 440 1 SOCKET HEAD CAP SCREW 20 632 1 4 SOCKET HEAD CAP SCREW 15 632 1 2 SOCKET HEAD CAP SCREW iS 632 34 SOCKET HEAD CAP SCREW 15 632 1 SOCKET HEAD CAP SCREW iS $-35 1 r SOCKET HEAD CAP SCREW IS 632 2 SOCKET HEAD CAP SCREW 15 FLAT WASHERS SAF ZtNC PLATED 4 6 NYLON NSERT LOCK NUTS ZINC PLATED 2-56 440 632 TS 40 So 75 65 NI TOTAL PCS 735 KITSCOME COMPLETE WITH 10 COMPARTMENT HEAVY DUTY NDUSTRIAL ORGANtZER ONLY $2495 __________________THESE SUPERB NEW G-MARK THROTTLE-EQUI MULTI-CYLINDER R/C ENGINES OFFER SCALE APPEARANCE & PERFORM ARE EASY STARTING WITH SMOOTH OPERATION & EXCELLENT TOP 122 R/C30 RIO TWIN TWIN iu305 SCYL 2800-14000RPM2s R/C $9995 z0015000 RPM 1095 OZ $17495 THROTTLE MUFFLER AND BALL BEARINGS STD ALL ENGINES OZ 495 OZ GLOW PLUGS NOT INCLUDED 2500-15000 RPM Calif add Sales Tax Shipping $300 noCODs VISA t Brochure 61 US $170 Foreign Add 41/2% Visa er Card Std Dealer Distributor Discounts L 13400-26 Saticoy StreetNortH Hollywood Calif 9160512131 _______ May1982 115 t1tI Lah1 1 In/lI Ill - 5o5soJ~jIjj alhlAljijil -. iJ HSA4NI ALLOY ASSORTMENT SHOWN Mail Order To* Please include $250 tar postage HARDWARE SYSTEMS * handling Add $150 tar coo 1428 WashIngton Ave S@* Minn residents add 5% sales tax Eden Prairie NIKfl * Orders will shipped withing 48 Phone 81294I15T hours 1 CANNONR/C MULTI ENGINES RIC SYSTEMS cap Is allow access tor remov ing steerable nose gear Steering pushrod sealed against water