rip E lectrics Bob Kopski CHARGE lowly charger can benefit some tender loving care TLC sojne tips Almost chargers market come equipped 15-minute time switch timer clockwork mechanism generally very reliable operation user rotates timer knob back start position knob first moved hand set internal electrical contacts closed connected series charge circuit thus charge current begins flow first turn knob 15 min utes has elapsed knob returns zero contacts open charge current terminated Its very simple straightforward foolproof almost Like anything else life can things go wrong chargers things simply having bad timer shows up generally timer begins its clocking run stops somewhere during 15 minutes gets stuck stops ticking contacts dont open really bad news arent aware its happening yob will suddenly need new timer new battery well Ive encountered few such bad timers constitute quite small percen tage ones Ive seen Usually defective timer will show up during its first few operations Thus its easy reassure yourself high level confi dence probably have good tim er new charger just bought simply operate timer bench several times doing actual charging Wind knob full clock wise turn let time-out back zero stops along wayevertake advantage warranty checkout 100% guarantee its good enough once timer stick after about 80 operations just happened nearby caught its dirty deed other timers have worked flawlessly far timing goes hundreds hun dreds operations So much clockwork Now lets look another potential trouble spot assembly timer contacts Ive found internal time-switch con tacts may become erratic after few hun dred operations flights dangerous battery because poorly operating contact merely interrupts current flow get incomplete charge annoyance Fortunately condition serviceable can easily clean contacts theyre good new photos show some details Begin removing timer knob gently pry up around knob will come off Open charger case un connections timers screw terminals loosen timer mount ing nutits under knob re movedand time-switch should lift right out Put paint marker timer housing/backplate interface drop nail polish should can get rear plate back together same orientation gently pry up metal tabs hold brown insulating backplate metal timer housing backplate should separate easily metal housing What should see inside backplate two spring-contact arms contact points small bumps ends arms should separated little may see some blackened discoloring Take strip ordinary writing paper about A-in wide few inches long moisten few drops alcohol acetone Put paper between points gently press spring fingers points close lightly paper Draw paper through points few times should see some dirt coming off paper Now take similarly-sized strip 600-grit finishing paper draw tween points once twice grit first point other Hold contacts pressed against paper lightly doing should necessary draw finishing paper across point twice further cleans polishes con tacts careful distort bend contact spring-arms out original position Also take care let dust etc get now-exposed clockwork opened timer Reassemble timer first lining up paint dot reference marks place backplate place carefully press metal case tabs down against backplate Its necessary crush 48 Model Aviation Everything mechanical moving parts requires regular maintenance seems timer switch battery chargers case point inside popular Astro 4005D dual Charger Although will operate hundreds cycles can easi ly removed service replacement Above Loosen terminal screws remove wiring photo below L four metal tabs timer case have bent allow backpiate removed Please take care keep dustldirt out ciock works its opened up can burnish timer contact points strip 800grit finishing paper shown photo below R Apply gentle finger pressure contacts drawing strip through once twice Reverse grit other contact point Arrow points electrical contacts Theres column tabs flat make sure plate firmly held timer switch contacts should now good new timer can reinstalled charger housing Reconnect wiring timer screw terminals press knob place Observe knob correctly points zero doesnt readjust timer mounting rotation needed achieve serviced timer should now good hundreds chargings Finally above you can buy replacement timers Astro think Leisure Astros part number 5072 cost $1500 will have inquire Leisure particulars Larfe Electrics just year ago column pictured new Eureka ground-handling sport plane column used design exam ple Rules Thumb Electric models presented nowtwo-year-old MA Series About Electrics See MA September 1985 index particular details weight motor power wing loading etc described illustrate goes about configuring Electric scratch Eureka first flown June 91984 writing June 26 1985 has logged 153 flights Three motors have used Astro 25 Super Ferrite Astro 25 cobalt Keller 25/12 same 12-cell 12 Ah pack used Controls rudder elevator pro portional electronic throttle Eureka very easy fly easily meets design intent adequate flight time good ground handling simple maneuvers plane performs intended Rules Thumb have further tested proven good performance Eureka notwithstanding recurring urge move onward something better again felt never fails got terested large low-wing groundhandling Electricone having maneuverabilitya hotter ship Exciter 1 newest large Electric first flown rain May 17 year An 70 flights have logged dateand boy Are ever flights plane best Electric its type Ive flown probably Continued pae 134 Hay Horn Old Timer- its 4om LANCOS 0 GAS NODEL J140d5L RCORO OREAKER 1941 BROOKLYN DODGER 56 Cabin EWEST Retail $52 95**INTRODUCTORY PRICE $3900 1938 Record Breaker- 56 $6956 1939 Zipper 5455356 1938 KIouci King 63 54236 1941 Brigidier 56 $4076 1951 Super Quaker 78 $7276 1940 So Long 50$3026 1936 Buccaneer 85 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 108 $7510 1935 Miss Arserica 04 $7196 1901 Playboy Sr 00 $51 16 1941 Playboy Jr 54 $3116 1938 Powerhouse 86 $53 56 1940 Sailplane 78 $8476 1938 Trenton Terror 72 $4076 1940 Ranger 4653146 1939 Korda Wake 44 $1918 lg39Mercury 72 6 kits qualify SAM events FF & St/C feature highest quality machine cut & sanded ports Superior alt Competition alt sheet ond strip wood wire & window material Plans ortg FF models ore easily convertible 3ch RIG KITS Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 70 $1800 Midway Model GNOME RIG Hand Launch Glider$2400 Jolly Models FLINGER RIG HLG 58 Span $2400 Midway Model FAST EDDIE Acrobatic /05 ElecSl900 Jolly Models ELECTRICUS Electric Glider 05s$3250 Leisure PLAYBOY SR 67 Gear 05 Elect $3000 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure WASP 37 Direct 05 Electrics $2250 Midway ULTRA MK IV 06 Geared 04 EP $3900 Midway FLYING QUAKER 04 90-454 stroke $6476 4ks/Midway DENNY JR 72 Aluw Cowel $6396 4ks/Midwav ru*wee 1 96 FULL LINE OF ELECTRIC SYSTEMS S Parts AvarI SHIPPING & HANDLING 84 Psge CATALOGUE Up $000 add $150 $209 PP/tot Class $601 $2000 add $225 copy will sent $2001 54500 add $300 freewhen requested$4501 $7000 add $350 order over $7000 add $400 HOBBY HORN CA Addressees add 6$ tao 15173 Moran St Al Send MO Visa/MC#-Exp PO Boa 2212 Check allow up tO 30 Westminster Ca 926t4 days CK clearance 714 0930311 COD Ewact Charges plus $190 Hdl Cash Only [Aft Hrs 714 09512031 October1985 4 framework Bobs new Exciter plane L very strong right placesand very light everywherel As shown land ing gear wheels weight 23 oz Electric Success depends keeping model light photo right completed Exciter 1 Eureka R two simllarslzed large Electrics capable easy groundhandling grass fields Both equipped electronic throttlesadding greatly funlflight time properly used trick use high power during takeoff maneuvers throttle back other tImes Remember Electrics fly wingnot brute powerl 4 cycle engines becoming more popular good tach is bec nan absolutely necessary item modelers field box since adju reliable virtually impossible 4 cycles quiet ertaite has 4 qualities make stand out rest range 0513130RPM 0251300 RPM easi less half called Super tachs So whether competition sport flying ACE TP flight box 26K25-TachMaster 25K25C-TachMaster. Seed $200 asaileble you* H&5d1159 Fee 11W W 15th St Tuned Pipe Clamp $250** pipe included 8 oz $4 95* perfect basic trainer can flown three mistakes high still seen Balna ply conatruction 72 apan 106 sq in$9995 Powar 75-12 CU ifl Perfectfor4 cycle Dealer Inquiry Invted 1728 lywood SE Canton OH 44707 Send Si forCatalog 84-6810 H MFG A masking tape After drying primer sanded down tape level feath ered adjacent area tape removed line edge remaining primer stands above model surface amount tape thickness pronounced lines use double layers tape Heavy paint buildup over lines tends hide therefore light coats should added Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 49 better plane am pilot Its sheer delight air crowd-pleaser besides Lets look closely its par ticulars Exciter about same 'i Eurekaboth have 600 sq wings comparable moments tail feathers Exciter has time-honored NACA 2412 wing section la Falcon instead thick flat-bottom energy source 15-cell 12 Ah pack Motiva tion Astro 40 cobalt Robbe 50/14 cobalt Controls aileron elevator rudder electronic throttle original design Props have ranged 9 x 6 10 x 5 All-up weight 81 oz wing load ing 195 oz/sq ft honors Rules Thumb Results terrific Now some performance particulars Exciter does common stuff com fortable touch-and-goes easy rolls con secutive inside outside loops square loops Inverted breeze Snaps just Stall turns no sweat has aggressive takeoff grass almost /2 horsepower input available also very wide speed rangeand no exag geration siz~ long does fly 70 flights date 60 select ed representative Ten longest shortest flights dropped non represenative since test flights short charges etc 60 flights numerically averaged resulting average flight time takeoff taxi roll final touch 4 mm 54 sec fly ing generally mixture maneu vers mentioned above play throt tle allocate power needed gives what need need maxi mizes flight time such flights Regarding playing its interest ing note got used plane flights got better acro batically also longer duration example flight times about itial third Exciters total flights average about 4 mm 40 sec re cent third averages about 5 mm 10 sec done safe charging technique make no effort what soever input peak chargeeach flights 15-minute charge constant 42 Amps Now test flights mentioned Rule Thumb No 1 predicts Exciter should cruise ie just maintain level flight somewhat over 10 minutes charge described above test ed two flights different days wherein merely circled field low altitude playing throttle just maintain altitude two flight times logged 11 mm 1 sec 11 mm 32 sec considered close agreement prediction came out favorable side made flight low level circles full bore result 3 mm 36 sec flight very comfort able range maximum-available mini mum-required flight power usage Fur ther flight time average 4 mm 54 sec mentioned above just about predicted maximum time agrees guideline doubling calcu lated power-to-cruise good flights Exciter 1 unqualified success After theres much left say except can too dont have plans available planes sincerely feel Rules Thumb very good guidelines should always put ballpark achieving successful Electriclarge small may have scratch-build did Eureka Exciter besides rewards worth have some appealing kit mind mindful kits heavy another Rule Thumb youll no doubt have some modifying construction substitution material Remember importance weight Electric power system typically 40% 60% weight com pleted Electricthe covered model radio other half approximately Exciter power system weighs 29 oz battery plus 14 oz motor plus two ounces miscellaneous wiring etc about 54% total model weight memorable satisfac tions Exciter has given date opportunity comment glowingly friend fellow modeler greasy skeptic Bruce Im closing gap normally vocal greasy gasminded friend normally scoffs friendly way Electric endeavors seen several Exciter flights now no comment other mutter ing something about wheel choice looking good Im now working wheels Basic electricIty previous August 1985 installment continuing miiseries examined analog meter movements application multimeters seen various ranges multimeter accomplished switching various external resistors circuit meter movement also learned basic meter move ments require exceptionally small amounts power operate full-scale 134 Model Aviation THE ONE THAT WORKS PRO-CLAM P ITS SNAP CLEANERPolisher SUPER SHINE SUPER SLICK Glider Pilots Take Note Brass Tubing Replacement HEAT BENDABLE KZ Line CAdd $175 Add $050 Shipping Handling Dealer-Dist Inquiries Invited Jr STICKmwiw 904 478-6745 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR kraft Pro Line -7 c Futaba JR 43 West Nine Mile Rd Pensacola FL 32514 ~~2 millionths watt used am meter few tens microanips will drive full-scale used voltmeter small fraction volt suffices drive full-scale light useful voltage scale obtained switching large resistor series meter such say 10 volts drives meter full-scale resistors may have values hundreds thousands ohms higher-voltage ranges consequence voltage measurement battery ex ample draws very little current matter few micro-amperes thereby leaves measured device relatively un disturbedthe characteristic good voltmeter Item remember voltmeters multimeters used read voltage used measure voltage across electrical componentnever series elec trical circuit Using multimeter Want measure voltage six-cell motor battery What scale should use meter Lets see six cells 12 volts per cell con nected series should give us about seven volts typical nearby range multimeters 10 volts Use Next connect positive usually color-coded Red test lead positive battery ter minal negative usually color-cod ed Black test lead negative battery terminal meter pointer will move upscale will probably come rest around 72 volts Ni-Cd motor battery charged Simple eh what selected higher meter range say 50 volts youd still get reading _______SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO PAAKSKOKUFAN 3news I36 000In stoclr2000 I20 sage CATALOG Satstachon418 Oceanfront u S2006IgeSASE SCALE MOOELRESEARCH Guaranteed Newport Beach CaIrtornes 920cr meters pointer would way down near bottom scale graduations coarse hard read accurately Items remember use meter range allows largest pointer deflection still staying scale other extreme selected too low range pointer would over shoot meter scaleand wouldnt tell anything about battery voltage might damage meter well Remember read voltages across something select meter range will result easy-to-read pointer deflection Since multimeters offer large choice scales sure choose DC voltage rangeand read correct DC meter scalewhen measuring everything can think hobby Well look exceptions another time Refrain moving meters range-selector switch meter connected use unless pay very strict attention exactly what youre doing acciden tally slip selector switch current resistor range test leads connected voltage source can considerable damage meter continued meantime please forward questions include SASE please yours truly Bob Kopski 25 West End Dr Lans dale PA 19446and may happy Electric landings yours SILICONE TUBING tO2550 SMALL C 062 dl 6260 MEDC 062 dl 15400860061600 LARGE C 125 dla C 66006112582000 US & CAN POSTPAID L4RRY POD6E AFRO INC 42IICOTTAOE PE RD WHITE BEAR LIt UN 65110 RC Old-Timers/Mathews Continued page 51 Ever wished could quickly get landing gear off Old-Timer stow car clean out area around fuselage youre gonna love Vortac Mfg Cos Gear Locks look like ordinary nylon straps much thicker provide locking slot side uses included drilling jig secures end adjusts other screw tight latching swingover section remove gear just pushes slotted end releases things also great mounting cabanes bipes some OldTimer designs wire wing mounts Ive already mentioned Aces Tach Master have decided now absolute necessity field box another products equally im portant particularly 1AA Texaco flier Mini ESV just great checking battery charge 100 mA packs between flightsjust sure enough left last flight matter darn good safety practice size flight pack Did ever look meter transmitter think yourself So transmitter battery still up wonder what state flight battery little pocket-sized gem way sure Newsletters photos needed some reason several SAM chapters no longer sending newsletters Continued page 138 October 1 985 1 35 * A Futaba Distributor er Inquiries Welcome * * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488
Edition: Model Aviation - 1985/10
Page Numbers: 48, 49, 134, 135
rip E lectrics Bob Kopski CHARGE lowly charger can benefit some tender loving care TLC sojne tips Almost chargers market come equipped 15-minute time switch timer clockwork mechanism generally very reliable operation user rotates timer knob back start position knob first moved hand set internal electrical contacts closed connected series charge circuit thus charge current begins flow first turn knob 15 min utes has elapsed knob returns zero contacts open charge current terminated Its very simple straightforward foolproof almost Like anything else life can things go wrong chargers things simply having bad timer shows up generally timer begins its clocking run stops somewhere during 15 minutes gets stuck stops ticking contacts dont open really bad news arent aware its happening yob will suddenly need new timer new battery well Ive encountered few such bad timers constitute quite small percen tage ones Ive seen Usually defective timer will show up during its first few operations Thus its easy reassure yourself high level confi dence probably have good tim er new charger just bought simply operate timer bench several times doing actual charging Wind knob full clock wise turn let time-out back zero stops along wayevertake advantage warranty checkout 100% guarantee its good enough once timer stick after about 80 operations just happened nearby caught its dirty deed other timers have worked flawlessly far timing goes hundreds hun dreds operations So much clockwork Now lets look another potential trouble spot assembly timer contacts Ive found internal time-switch con tacts may become erratic after few hun dred operations flights dangerous battery because poorly operating contact merely interrupts current flow get incomplete charge annoyance Fortunately condition serviceable can easily clean contacts theyre good new photos show some details Begin removing timer knob gently pry up around knob will come off Open charger case un connections timers screw terminals loosen timer mount ing nutits under knob re movedand time-switch should lift right out Put paint marker timer housing/backplate interface drop nail polish should can get rear plate back together same orientation gently pry up metal tabs hold brown insulating backplate metal timer housing backplate should separate easily metal housing What should see inside backplate two spring-contact arms contact points small bumps ends arms should separated little may see some blackened discoloring Take strip ordinary writing paper about A-in wide few inches long moisten few drops alcohol acetone Put paper between points gently press spring fingers points close lightly paper Draw paper through points few times should see some dirt coming off paper Now take similarly-sized strip 600-grit finishing paper draw tween points once twice grit first point other Hold contacts pressed against paper lightly doing should necessary draw finishing paper across point twice further cleans polishes con tacts careful distort bend contact spring-arms out original position Also take care let dust etc get now-exposed clockwork opened timer Reassemble timer first lining up paint dot reference marks place backplate place carefully press metal case tabs down against backplate Its necessary crush 48 Model Aviation Everything mechanical moving parts requires regular maintenance seems timer switch battery chargers case point inside popular Astro 4005D dual Charger Although will operate hundreds cycles can easi ly removed service replacement Above Loosen terminal screws remove wiring photo below L four metal tabs timer case have bent allow backpiate removed Please take care keep dustldirt out ciock works its opened up can burnish timer contact points strip 800grit finishing paper shown photo below R Apply gentle finger pressure contacts drawing strip through once twice Reverse grit other contact point Arrow points electrical contacts Theres column tabs flat make sure plate firmly held timer switch contacts should now good new timer can reinstalled charger housing Reconnect wiring timer screw terminals press knob place Observe knob correctly points zero doesnt readjust timer mounting rotation needed achieve serviced timer should now good hundreds chargings Finally above you can buy replacement timers Astro think Leisure Astros part number 5072 cost $1500 will have inquire Leisure particulars Larfe Electrics just year ago column pictured new Eureka ground-handling sport plane column used design exam ple Rules Thumb Electric models presented nowtwo-year-old MA Series About Electrics See MA September 1985 index particular details weight motor power wing loading etc described illustrate goes about configuring Electric scratch Eureka first flown June 91984 writing June 26 1985 has logged 153 flights Three motors have used Astro 25 Super Ferrite Astro 25 cobalt Keller 25/12 same 12-cell 12 Ah pack used Controls rudder elevator pro portional electronic throttle Eureka very easy fly easily meets design intent adequate flight time good ground handling simple maneuvers plane performs intended Rules Thumb have further tested proven good performance Eureka notwithstanding recurring urge move onward something better again felt never fails got terested large low-wing groundhandling Electricone having maneuverabilitya hotter ship Exciter 1 newest large Electric first flown rain May 17 year An 70 flights have logged dateand boy Are ever flights plane best Electric its type Ive flown probably Continued pae 134 Hay Horn Old Timer- its 4om LANCOS 0 GAS NODEL J140d5L RCORO OREAKER 1941 BROOKLYN DODGER 56 Cabin EWEST Retail $52 95**INTRODUCTORY PRICE $3900 1938 Record Breaker- 56 $6956 1939 Zipper 5455356 1938 KIouci King 63 54236 1941 Brigidier 56 $4076 1951 Super Quaker 78 $7276 1940 So Long 50$3026 1936 Buccaneer 85 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 108 $7510 1935 Miss Arserica 04 $7196 1901 Playboy Sr 00 $51 16 1941 Playboy Jr 54 $3116 1938 Powerhouse 86 $53 56 1940 Sailplane 78 $8476 1938 Trenton Terror 72 $4076 1940 Ranger 4653146 1939 Korda Wake 44 $1918 lg39Mercury 72 6 kits qualify SAM events FF & St/C feature highest quality machine cut & sanded ports Superior alt Competition alt sheet ond strip wood wire & window material Plans ortg FF models ore easily convertible 3ch RIG KITS Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 70 $1800 Midway Model GNOME RIG Hand Launch Glider$2400 Jolly Models FLINGER RIG HLG 58 Span $2400 Midway Model FAST EDDIE Acrobatic /05 ElecSl900 Jolly Models ELECTRICUS Electric Glider 05s$3250 Leisure PLAYBOY SR 67 Gear 05 Elect $3000 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure WASP 37 Direct 05 Electrics $2250 Midway ULTRA MK IV 06 Geared 04 EP $3900 Midway FLYING QUAKER 04 90-454 stroke $6476 4ks/Midway DENNY JR 72 Aluw Cowel $6396 4ks/Midwav ru*wee 1 96 FULL LINE OF ELECTRIC SYSTEMS S Parts AvarI SHIPPING & HANDLING 84 Psge CATALOGUE Up $000 add $150 $209 PP/tot Class $601 $2000 add $225 copy will sent $2001 54500 add $300 freewhen requested$4501 $7000 add $350 order over $7000 add $400 HOBBY HORN CA Addressees add 6$ tao 15173 Moran St Al Send MO Visa/MC#-Exp PO Boa 2212 Check allow up tO 30 Westminster Ca 926t4 days CK clearance 714 0930311 COD Ewact Charges plus $190 Hdl Cash Only [Aft Hrs 714 09512031 October1985 4 framework Bobs new Exciter plane L very strong right placesand very light everywherel As shown land ing gear wheels weight 23 oz Electric Success depends keeping model light photo right completed Exciter 1 Eureka R two simllarslzed large Electrics capable easy groundhandling grass fields Both equipped electronic throttlesadding greatly funlflight time properly used trick use high power during takeoff maneuvers throttle back other tImes Remember Electrics fly wingnot brute powerl 4 cycle engines becoming more popular good tach is bec nan absolutely necessary item modelers field box since adju reliable virtually impossible 4 cycles quiet ertaite has 4 qualities make stand out rest range 0513130RPM 0251300 RPM easi less half called Super tachs So whether competition sport flying ACE TP flight box 26K25-TachMaster 25K25C-TachMaster. Seed $200 asaileble you* H&5d1159 Fee 11W W 15th St Tuned Pipe Clamp $250** pipe included 8 oz $4 95* perfect basic trainer can flown three mistakes high still seen Balna ply conatruction 72 apan 106 sq in$9995 Powar 75-12 CU ifl Perfectfor4 cycle Dealer Inquiry Invted 1728 lywood SE Canton OH 44707 Send Si forCatalog 84-6810 H MFG A masking tape After drying primer sanded down tape level feath ered adjacent area tape removed line edge remaining primer stands above model surface amount tape thickness pronounced lines use double layers tape Heavy paint buildup over lines tends hide therefore light coats should added Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 49 better plane am pilot Its sheer delight air crowd-pleaser besides Lets look closely its par ticulars Exciter about same 'i Eurekaboth have 600 sq wings comparable moments tail feathers Exciter has time-honored NACA 2412 wing section la Falcon instead thick flat-bottom energy source 15-cell 12 Ah pack Motiva tion Astro 40 cobalt Robbe 50/14 cobalt Controls aileron elevator rudder electronic throttle original design Props have ranged 9 x 6 10 x 5 All-up weight 81 oz wing load ing 195 oz/sq ft honors Rules Thumb Results terrific Now some performance particulars Exciter does common stuff com fortable touch-and-goes easy rolls con secutive inside outside loops square loops Inverted breeze Snaps just Stall turns no sweat has aggressive takeoff grass almost /2 horsepower input available also very wide speed rangeand no exag geration siz~ long does fly 70 flights date 60 select ed representative Ten longest shortest flights dropped non represenative since test flights short charges etc 60 flights numerically averaged resulting average flight time takeoff taxi roll final touch 4 mm 54 sec fly ing generally mixture maneu vers mentioned above play throt tle allocate power needed gives what need need maxi mizes flight time such flights Regarding playing its interest ing note got used plane flights got better acro batically also longer duration example flight times about itial third Exciters total flights average about 4 mm 40 sec re cent third averages about 5 mm 10 sec done safe charging technique make no effort what soever input peak chargeeach flights 15-minute charge constant 42 Amps Now test flights mentioned Rule Thumb No 1 predicts Exciter should cruise ie just maintain level flight somewhat over 10 minutes charge described above test ed two flights different days wherein merely circled field low altitude playing throttle just maintain altitude two flight times logged 11 mm 1 sec 11 mm 32 sec considered close agreement prediction came out favorable side made flight low level circles full bore result 3 mm 36 sec flight very comfort able range maximum-available mini mum-required flight power usage Fur ther flight time average 4 mm 54 sec mentioned above just about predicted maximum time agrees guideline doubling calcu lated power-to-cruise good flights Exciter 1 unqualified success After theres much left say except can too dont have plans available planes sincerely feel Rules Thumb very good guidelines should always put ballpark achieving successful Electriclarge small may have scratch-build did Eureka Exciter besides rewards worth have some appealing kit mind mindful kits heavy another Rule Thumb youll no doubt have some modifying construction substitution material Remember importance weight Electric power system typically 40% 60% weight com pleted Electricthe covered model radio other half approximately Exciter power system weighs 29 oz battery plus 14 oz motor plus two ounces miscellaneous wiring etc about 54% total model weight memorable satisfac tions Exciter has given date opportunity comment glowingly friend fellow modeler greasy skeptic Bruce Im closing gap normally vocal greasy gasminded friend normally scoffs friendly way Electric endeavors seen several Exciter flights now no comment other mutter ing something about wheel choice looking good Im now working wheels Basic electricIty previous August 1985 installment continuing miiseries examined analog meter movements application multimeters seen various ranges multimeter accomplished switching various external resistors circuit meter movement also learned basic meter move ments require exceptionally small amounts power operate full-scale 134 Model Aviation THE ONE THAT WORKS PRO-CLAM P ITS SNAP CLEANERPolisher SUPER SHINE SUPER SLICK Glider Pilots Take Note Brass Tubing Replacement HEAT BENDABLE KZ Line CAdd $175 Add $050 Shipping Handling Dealer-Dist Inquiries Invited Jr STICKmwiw 904 478-6745 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR kraft Pro Line -7 c Futaba JR 43 West Nine Mile Rd Pensacola FL 32514 ~~2 millionths watt used am meter few tens microanips will drive full-scale used voltmeter small fraction volt suffices drive full-scale light useful voltage scale obtained switching large resistor series meter such say 10 volts drives meter full-scale resistors may have values hundreds thousands ohms higher-voltage ranges consequence voltage measurement battery ex ample draws very little current matter few micro-amperes thereby leaves measured device relatively un disturbedthe characteristic good voltmeter Item remember voltmeters multimeters used read voltage used measure voltage across electrical componentnever series elec trical circuit Using multimeter Want measure voltage six-cell motor battery What scale should use meter Lets see six cells 12 volts per cell con nected series should give us about seven volts typical nearby range multimeters 10 volts Use Next connect positive usually color-coded Red test lead positive battery ter minal negative usually color-cod ed Black test lead negative battery terminal meter pointer will move upscale will probably come rest around 72 volts Ni-Cd motor battery charged Simple eh what selected higher meter range say 50 volts youd still get reading _______SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO PAAKSKOKUFAN 3news I36 000In stoclr2000 I20 sage CATALOG Satstachon418 Oceanfront u S2006IgeSASE SCALE MOOELRESEARCH Guaranteed Newport Beach CaIrtornes 920cr meters pointer would way down near bottom scale graduations coarse hard read accurately Items remember use meter range allows largest pointer deflection still staying scale other extreme selected too low range pointer would over shoot meter scaleand wouldnt tell anything about battery voltage might damage meter well Remember read voltages across something select meter range will result easy-to-read pointer deflection Since multimeters offer large choice scales sure choose DC voltage rangeand read correct DC meter scalewhen measuring everything can think hobby Well look exceptions another time Refrain moving meters range-selector switch meter connected use unless pay very strict attention exactly what youre doing acciden tally slip selector switch current resistor range test leads connected voltage source can considerable damage meter continued meantime please forward questions include SASE please yours truly Bob Kopski 25 West End Dr Lans dale PA 19446and may happy Electric landings yours SILICONE TUBING tO2550 SMALL C 062 dl 6260 MEDC 062 dl 15400860061600 LARGE C 125 dla C 66006112582000 US & CAN POSTPAID L4RRY POD6E AFRO INC 42IICOTTAOE PE RD WHITE BEAR LIt UN 65110 RC Old-Timers/Mathews Continued page 51 Ever wished could quickly get landing gear off Old-Timer stow car clean out area around fuselage youre gonna love Vortac Mfg Cos Gear Locks look like ordinary nylon straps much thicker provide locking slot side uses included drilling jig secures end adjusts other screw tight latching swingover section remove gear just pushes slotted end releases things also great mounting cabanes bipes some OldTimer designs wire wing mounts Ive already mentioned Aces Tach Master have decided now absolute necessity field box another products equally im portant particularly 1AA Texaco flier Mini ESV just great checking battery charge 100 mA packs between flightsjust sure enough left last flight matter darn good safety practice size flight pack Did ever look meter transmitter think yourself So transmitter battery still up wonder what state flight battery little pocket-sized gem way sure Newsletters photos needed some reason several SAM chapters no longer sending newsletters Continued page 138 October 1 985 1 35 * A Futaba Distributor er Inquiries Welcome * * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488
Edition: Model Aviation - 1985/10
Page Numbers: 48, 49, 134, 135
rip E lectrics Bob Kopski CHARGE lowly charger can benefit some tender loving care TLC sojne tips Almost chargers market come equipped 15-minute time switch timer clockwork mechanism generally very reliable operation user rotates timer knob back start position knob first moved hand set internal electrical contacts closed connected series charge circuit thus charge current begins flow first turn knob 15 min utes has elapsed knob returns zero contacts open charge current terminated Its very simple straightforward foolproof almost Like anything else life can things go wrong chargers things simply having bad timer shows up generally timer begins its clocking run stops somewhere during 15 minutes gets stuck stops ticking contacts dont open really bad news arent aware its happening yob will suddenly need new timer new battery well Ive encountered few such bad timers constitute quite small percen tage ones Ive seen Usually defective timer will show up during its first few operations Thus its easy reassure yourself high level confi dence probably have good tim er new charger just bought simply operate timer bench several times doing actual charging Wind knob full clock wise turn let time-out back zero stops along wayevertake advantage warranty checkout 100% guarantee its good enough once timer stick after about 80 operations just happened nearby caught its dirty deed other timers have worked flawlessly far timing goes hundreds hun dreds operations So much clockwork Now lets look another potential trouble spot assembly timer contacts Ive found internal time-switch con tacts may become erratic after few hun dred operations flights dangerous battery because poorly operating contact merely interrupts current flow get incomplete charge annoyance Fortunately condition serviceable can easily clean contacts theyre good new photos show some details Begin removing timer knob gently pry up around knob will come off Open charger case un connections timers screw terminals loosen timer mount ing nutits under knob re movedand time-switch should lift right out Put paint marker timer housing/backplate interface drop nail polish should can get rear plate back together same orientation gently pry up metal tabs hold brown insulating backplate metal timer housing backplate should separate easily metal housing What should see inside backplate two spring-contact arms contact points small bumps ends arms should separated little may see some blackened discoloring Take strip ordinary writing paper about A-in wide few inches long moisten few drops alcohol acetone Put paper between points gently press spring fingers points close lightly paper Draw paper through points few times should see some dirt coming off paper Now take similarly-sized strip 600-grit finishing paper draw tween points once twice grit first point other Hold contacts pressed against paper lightly doing should necessary draw finishing paper across point twice further cleans polishes con tacts careful distort bend contact spring-arms out original position Also take care let dust etc get now-exposed clockwork opened timer Reassemble timer first lining up paint dot reference marks place backplate place carefully press metal case tabs down against backplate Its necessary crush 48 Model Aviation Everything mechanical moving parts requires regular maintenance seems timer switch battery chargers case point inside popular Astro 4005D dual Charger Although will operate hundreds cycles can easi ly removed service replacement Above Loosen terminal screws remove wiring photo below L four metal tabs timer case have bent allow backpiate removed Please take care keep dustldirt out ciock works its opened up can burnish timer contact points strip 800grit finishing paper shown photo below R Apply gentle finger pressure contacts drawing strip through once twice Reverse grit other contact point Arrow points electrical contacts Theres column tabs flat make sure plate firmly held timer switch contacts should now good new timer can reinstalled charger housing Reconnect wiring timer screw terminals press knob place Observe knob correctly points zero doesnt readjust timer mounting rotation needed achieve serviced timer should now good hundreds chargings Finally above you can buy replacement timers Astro think Leisure Astros part number 5072 cost $1500 will have inquire Leisure particulars Larfe Electrics just year ago column pictured new Eureka ground-handling sport plane column used design exam ple Rules Thumb Electric models presented nowtwo-year-old MA Series About Electrics See MA September 1985 index particular details weight motor power wing loading etc described illustrate goes about configuring Electric scratch Eureka first flown June 91984 writing June 26 1985 has logged 153 flights Three motors have used Astro 25 Super Ferrite Astro 25 cobalt Keller 25/12 same 12-cell 12 Ah pack used Controls rudder elevator pro portional electronic throttle Eureka very easy fly easily meets design intent adequate flight time good ground handling simple maneuvers plane performs intended Rules Thumb have further tested proven good performance Eureka notwithstanding recurring urge move onward something better again felt never fails got terested large low-wing groundhandling Electricone having maneuverabilitya hotter ship Exciter 1 newest large Electric first flown rain May 17 year An 70 flights have logged dateand boy Are ever flights plane best Electric its type Ive flown probably Continued pae 134 Hay Horn Old Timer- its 4om LANCOS 0 GAS NODEL J140d5L RCORO OREAKER 1941 BROOKLYN DODGER 56 Cabin EWEST Retail $52 95**INTRODUCTORY PRICE $3900 1938 Record Breaker- 56 $6956 1939 Zipper 5455356 1938 KIouci King 63 54236 1941 Brigidier 56 $4076 1951 Super Quaker 78 $7276 1940 So Long 50$3026 1936 Buccaneer 85 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 108 $7510 1935 Miss Arserica 04 $7196 1901 Playboy Sr 00 $51 16 1941 Playboy Jr 54 $3116 1938 Powerhouse 86 $53 56 1940 Sailplane 78 $8476 1938 Trenton Terror 72 $4076 1940 Ranger 4653146 1939 Korda Wake 44 $1918 lg39Mercury 72 6 kits qualify SAM events FF & St/C feature highest quality machine cut & sanded ports Superior alt Competition alt sheet ond strip wood wire & window material Plans ortg FF models ore easily convertible 3ch RIG KITS Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 70 $1800 Midway Model GNOME RIG Hand Launch Glider$2400 Jolly Models FLINGER RIG HLG 58 Span $2400 Midway Model FAST EDDIE Acrobatic /05 ElecSl900 Jolly Models ELECTRICUS Electric Glider 05s$3250 Leisure PLAYBOY SR 67 Gear 05 Elect $3000 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure WASP 37 Direct 05 Electrics $2250 Midway ULTRA MK IV 06 Geared 04 EP $3900 Midway FLYING QUAKER 04 90-454 stroke $6476 4ks/Midway DENNY JR 72 Aluw Cowel $6396 4ks/Midwav ru*wee 1 96 FULL LINE OF ELECTRIC SYSTEMS S Parts AvarI SHIPPING & HANDLING 84 Psge CATALOGUE Up $000 add $150 $209 PP/tot Class $601 $2000 add $225 copy will sent $2001 54500 add $300 freewhen requested$4501 $7000 add $350 order over $7000 add $400 HOBBY HORN CA Addressees add 6$ tao 15173 Moran St Al Send MO Visa/MC#-Exp PO Boa 2212 Check allow up tO 30 Westminster Ca 926t4 days CK clearance 714 0930311 COD Ewact Charges plus $190 Hdl Cash Only [Aft Hrs 714 09512031 October1985 4 framework Bobs new Exciter plane L very strong right placesand very light everywherel As shown land ing gear wheels weight 23 oz Electric Success depends keeping model light photo right completed Exciter 1 Eureka R two simllarslzed large Electrics capable easy groundhandling grass fields Both equipped electronic throttlesadding greatly funlflight time properly used trick use high power during takeoff maneuvers throttle back other tImes Remember Electrics fly wingnot brute powerl 4 cycle engines becoming more popular good tach is bec nan absolutely necessary item modelers field box since adju reliable virtually impossible 4 cycles quiet ertaite has 4 qualities make stand out rest range 0513130RPM 0251300 RPM easi less half called Super tachs So whether competition sport flying ACE TP flight box 26K25-TachMaster 25K25C-TachMaster. Seed $200 asaileble you* H&5d1159 Fee 11W W 15th St Tuned Pipe Clamp $250** pipe included 8 oz $4 95* perfect basic trainer can flown three mistakes high still seen Balna ply conatruction 72 apan 106 sq in$9995 Powar 75-12 CU ifl Perfectfor4 cycle Dealer Inquiry Invted 1728 lywood SE Canton OH 44707 Send Si forCatalog 84-6810 H MFG A masking tape After drying primer sanded down tape level feath ered adjacent area tape removed line edge remaining primer stands above model surface amount tape thickness pronounced lines use double layers tape Heavy paint buildup over lines tends hide therefore light coats should added Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 49 better plane am pilot Its sheer delight air crowd-pleaser besides Lets look closely its par ticulars Exciter about same 'i Eurekaboth have 600 sq wings comparable moments tail feathers Exciter has time-honored NACA 2412 wing section la Falcon instead thick flat-bottom energy source 15-cell 12 Ah pack Motiva tion Astro 40 cobalt Robbe 50/14 cobalt Controls aileron elevator rudder electronic throttle original design Props have ranged 9 x 6 10 x 5 All-up weight 81 oz wing load ing 195 oz/sq ft honors Rules Thumb Results terrific Now some performance particulars Exciter does common stuff com fortable touch-and-goes easy rolls con secutive inside outside loops square loops Inverted breeze Snaps just Stall turns no sweat has aggressive takeoff grass almost /2 horsepower input available also very wide speed rangeand no exag geration siz~ long does fly 70 flights date 60 select ed representative Ten longest shortest flights dropped non represenative since test flights short charges etc 60 flights numerically averaged resulting average flight time takeoff taxi roll final touch 4 mm 54 sec fly ing generally mixture maneu vers mentioned above play throt tle allocate power needed gives what need need maxi mizes flight time such flights Regarding playing its interest ing note got used plane flights got better acro batically also longer duration example flight times about itial third Exciters total flights average about 4 mm 40 sec re cent third averages about 5 mm 10 sec done safe charging technique make no effort what soever input peak chargeeach flights 15-minute charge constant 42 Amps Now test flights mentioned Rule Thumb No 1 predicts Exciter should cruise ie just maintain level flight somewhat over 10 minutes charge described above test ed two flights different days wherein merely circled field low altitude playing throttle just maintain altitude two flight times logged 11 mm 1 sec 11 mm 32 sec considered close agreement prediction came out favorable side made flight low level circles full bore result 3 mm 36 sec flight very comfort able range maximum-available mini mum-required flight power usage Fur ther flight time average 4 mm 54 sec mentioned above just about predicted maximum time agrees guideline doubling calcu lated power-to-cruise good flights Exciter 1 unqualified success After theres much left say except can too dont have plans available planes sincerely feel Rules Thumb very good guidelines should always put ballpark achieving successful Electriclarge small may have scratch-build did Eureka Exciter besides rewards worth have some appealing kit mind mindful kits heavy another Rule Thumb youll no doubt have some modifying construction substitution material Remember importance weight Electric power system typically 40% 60% weight com pleted Electricthe covered model radio other half approximately Exciter power system weighs 29 oz battery plus 14 oz motor plus two ounces miscellaneous wiring etc about 54% total model weight memorable satisfac tions Exciter has given date opportunity comment glowingly friend fellow modeler greasy skeptic Bruce Im closing gap normally vocal greasy gasminded friend normally scoffs friendly way Electric endeavors seen several Exciter flights now no comment other mutter ing something about wheel choice looking good Im now working wheels Basic electricIty previous August 1985 installment continuing miiseries examined analog meter movements application multimeters seen various ranges multimeter accomplished switching various external resistors circuit meter movement also learned basic meter move ments require exceptionally small amounts power operate full-scale 134 Model Aviation THE ONE THAT WORKS PRO-CLAM P ITS SNAP CLEANERPolisher SUPER SHINE SUPER SLICK Glider Pilots Take Note Brass Tubing Replacement HEAT BENDABLE KZ Line CAdd $175 Add $050 Shipping Handling Dealer-Dist Inquiries Invited Jr STICKmwiw 904 478-6745 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR kraft Pro Line -7 c Futaba JR 43 West Nine Mile Rd Pensacola FL 32514 ~~2 millionths watt used am meter few tens microanips will drive full-scale used voltmeter small fraction volt suffices drive full-scale light useful voltage scale obtained switching large resistor series meter such say 10 volts drives meter full-scale resistors may have values hundreds thousands ohms higher-voltage ranges consequence voltage measurement battery ex ample draws very little current matter few micro-amperes thereby leaves measured device relatively un disturbedthe characteristic good voltmeter Item remember voltmeters multimeters used read voltage used measure voltage across electrical componentnever series elec trical circuit Using multimeter Want measure voltage six-cell motor battery What scale should use meter Lets see six cells 12 volts per cell con nected series should give us about seven volts typical nearby range multimeters 10 volts Use Next connect positive usually color-coded Red test lead positive battery ter minal negative usually color-cod ed Black test lead negative battery terminal meter pointer will move upscale will probably come rest around 72 volts Ni-Cd motor battery charged Simple eh what selected higher meter range say 50 volts youd still get reading _______SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO PAAKSKOKUFAN 3news I36 000In stoclr2000 I20 sage CATALOG Satstachon418 Oceanfront u S2006IgeSASE SCALE MOOELRESEARCH Guaranteed Newport Beach CaIrtornes 920cr meters pointer would way down near bottom scale graduations coarse hard read accurately Items remember use meter range allows largest pointer deflection still staying scale other extreme selected too low range pointer would over shoot meter scaleand wouldnt tell anything about battery voltage might damage meter well Remember read voltages across something select meter range will result easy-to-read pointer deflection Since multimeters offer large choice scales sure choose DC voltage rangeand read correct DC meter scalewhen measuring everything can think hobby Well look exceptions another time Refrain moving meters range-selector switch meter connected use unless pay very strict attention exactly what youre doing acciden tally slip selector switch current resistor range test leads connected voltage source can considerable damage meter continued meantime please forward questions include SASE please yours truly Bob Kopski 25 West End Dr Lans dale PA 19446and may happy Electric landings yours SILICONE TUBING tO2550 SMALL C 062 dl 6260 MEDC 062 dl 15400860061600 LARGE C 125 dla C 66006112582000 US & CAN POSTPAID L4RRY POD6E AFRO INC 42IICOTTAOE PE RD WHITE BEAR LIt UN 65110 RC Old-Timers/Mathews Continued page 51 Ever wished could quickly get landing gear off Old-Timer stow car clean out area around fuselage youre gonna love Vortac Mfg Cos Gear Locks look like ordinary nylon straps much thicker provide locking slot side uses included drilling jig secures end adjusts other screw tight latching swingover section remove gear just pushes slotted end releases things also great mounting cabanes bipes some OldTimer designs wire wing mounts Ive already mentioned Aces Tach Master have decided now absolute necessity field box another products equally im portant particularly 1AA Texaco flier Mini ESV just great checking battery charge 100 mA packs between flightsjust sure enough left last flight matter darn good safety practice size flight pack Did ever look meter transmitter think yourself So transmitter battery still up wonder what state flight battery little pocket-sized gem way sure Newsletters photos needed some reason several SAM chapters no longer sending newsletters Continued page 138 October 1 985 1 35 * A Futaba Distributor er Inquiries Welcome * * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488
Edition: Model Aviation - 1985/10
Page Numbers: 48, 49, 134, 135
rip E lectrics Bob Kopski CHARGE lowly charger can benefit some tender loving care TLC sojne tips Almost chargers market come equipped 15-minute time switch timer clockwork mechanism generally very reliable operation user rotates timer knob back start position knob first moved hand set internal electrical contacts closed connected series charge circuit thus charge current begins flow first turn knob 15 min utes has elapsed knob returns zero contacts open charge current terminated Its very simple straightforward foolproof almost Like anything else life can things go wrong chargers things simply having bad timer shows up generally timer begins its clocking run stops somewhere during 15 minutes gets stuck stops ticking contacts dont open really bad news arent aware its happening yob will suddenly need new timer new battery well Ive encountered few such bad timers constitute quite small percen tage ones Ive seen Usually defective timer will show up during its first few operations Thus its easy reassure yourself high level confi dence probably have good tim er new charger just bought simply operate timer bench several times doing actual charging Wind knob full clock wise turn let time-out back zero stops along wayevertake advantage warranty checkout 100% guarantee its good enough once timer stick after about 80 operations just happened nearby caught its dirty deed other timers have worked flawlessly far timing goes hundreds hun dreds operations So much clockwork Now lets look another potential trouble spot assembly timer contacts Ive found internal time-switch con tacts may become erratic after few hun dred operations flights dangerous battery because poorly operating contact merely interrupts current flow get incomplete charge annoyance Fortunately condition serviceable can easily clean contacts theyre good new photos show some details Begin removing timer knob gently pry up around knob will come off Open charger case un connections timers screw terminals loosen timer mount ing nutits under knob re movedand time-switch should lift right out Put paint marker timer housing/backplate interface drop nail polish should can get rear plate back together same orientation gently pry up metal tabs hold brown insulating backplate metal timer housing backplate should separate easily metal housing What should see inside backplate two spring-contact arms contact points small bumps ends arms should separated little may see some blackened discoloring Take strip ordinary writing paper about A-in wide few inches long moisten few drops alcohol acetone Put paper between points gently press spring fingers points close lightly paper Draw paper through points few times should see some dirt coming off paper Now take similarly-sized strip 600-grit finishing paper draw tween points once twice grit first point other Hold contacts pressed against paper lightly doing should necessary draw finishing paper across point twice further cleans polishes con tacts careful distort bend contact spring-arms out original position Also take care let dust etc get now-exposed clockwork opened timer Reassemble timer first lining up paint dot reference marks place backplate place carefully press metal case tabs down against backplate Its necessary crush 48 Model Aviation Everything mechanical moving parts requires regular maintenance seems timer switch battery chargers case point inside popular Astro 4005D dual Charger Although will operate hundreds cycles can easi ly removed service replacement Above Loosen terminal screws remove wiring photo below L four metal tabs timer case have bent allow backpiate removed Please take care keep dustldirt out ciock works its opened up can burnish timer contact points strip 800grit finishing paper shown photo below R Apply gentle finger pressure contacts drawing strip through once twice Reverse grit other contact point Arrow points electrical contacts Theres column tabs flat make sure plate firmly held timer switch contacts should now good new timer can reinstalled charger housing Reconnect wiring timer screw terminals press knob place Observe knob correctly points zero doesnt readjust timer mounting rotation needed achieve serviced timer should now good hundreds chargings Finally above you can buy replacement timers Astro think Leisure Astros part number 5072 cost $1500 will have inquire Leisure particulars Larfe Electrics just year ago column pictured new Eureka ground-handling sport plane column used design exam ple Rules Thumb Electric models presented nowtwo-year-old MA Series About Electrics See MA September 1985 index particular details weight motor power wing loading etc described illustrate goes about configuring Electric scratch Eureka first flown June 91984 writing June 26 1985 has logged 153 flights Three motors have used Astro 25 Super Ferrite Astro 25 cobalt Keller 25/12 same 12-cell 12 Ah pack used Controls rudder elevator pro portional electronic throttle Eureka very easy fly easily meets design intent adequate flight time good ground handling simple maneuvers plane performs intended Rules Thumb have further tested proven good performance Eureka notwithstanding recurring urge move onward something better again felt never fails got terested large low-wing groundhandling Electricone having maneuverabilitya hotter ship Exciter 1 newest large Electric first flown rain May 17 year An 70 flights have logged dateand boy Are ever flights plane best Electric its type Ive flown probably Continued pae 134 Hay Horn Old Timer- its 4om LANCOS 0 GAS NODEL J140d5L RCORO OREAKER 1941 BROOKLYN DODGER 56 Cabin EWEST Retail $52 95**INTRODUCTORY PRICE $3900 1938 Record Breaker- 56 $6956 1939 Zipper 5455356 1938 KIouci King 63 54236 1941 Brigidier 56 $4076 1951 Super Quaker 78 $7276 1940 So Long 50$3026 1936 Buccaneer 85 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 108 $7510 1935 Miss Arserica 04 $7196 1901 Playboy Sr 00 $51 16 1941 Playboy Jr 54 $3116 1938 Powerhouse 86 $53 56 1940 Sailplane 78 $8476 1938 Trenton Terror 72 $4076 1940 Ranger 4653146 1939 Korda Wake 44 $1918 lg39Mercury 72 6 kits qualify SAM events FF & St/C feature highest quality machine cut & sanded ports Superior alt Competition alt sheet ond strip wood wire & window material Plans ortg FF models ore easily convertible 3ch RIG KITS Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 70 $1800 Midway Model GNOME RIG Hand Launch Glider$2400 Jolly Models FLINGER RIG HLG 58 Span $2400 Midway Model FAST EDDIE Acrobatic /05 ElecSl900 Jolly Models ELECTRICUS Electric Glider 05s$3250 Leisure PLAYBOY SR 67 Gear 05 Elect $3000 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure WASP 37 Direct 05 Electrics $2250 Midway ULTRA MK IV 06 Geared 04 EP $3900 Midway FLYING QUAKER 04 90-454 stroke $6476 4ks/Midway DENNY JR 72 Aluw Cowel $6396 4ks/Midwav ru*wee 1 96 FULL LINE OF ELECTRIC SYSTEMS S Parts AvarI SHIPPING & HANDLING 84 Psge CATALOGUE Up $000 add $150 $209 PP/tot Class $601 $2000 add $225 copy will sent $2001 54500 add $300 freewhen requested$4501 $7000 add $350 order over $7000 add $400 HOBBY HORN CA Addressees add 6$ tao 15173 Moran St Al Send MO Visa/MC#-Exp PO Boa 2212 Check allow up tO 30 Westminster Ca 926t4 days CK clearance 714 0930311 COD Ewact Charges plus $190 Hdl Cash Only [Aft Hrs 714 09512031 October1985 4 framework Bobs new Exciter plane L very strong right placesand very light everywherel As shown land ing gear wheels weight 23 oz Electric Success depends keeping model light photo right completed Exciter 1 Eureka R two simllarslzed large Electrics capable easy groundhandling grass fields Both equipped electronic throttlesadding greatly funlflight time properly used trick use high power during takeoff maneuvers throttle back other tImes Remember Electrics fly wingnot brute powerl 4 cycle engines becoming more popular good tach is bec nan absolutely necessary item modelers field box since adju reliable virtually impossible 4 cycles quiet ertaite has 4 qualities make stand out rest range 0513130RPM 0251300 RPM easi less half called Super tachs So whether competition sport flying ACE TP flight box 26K25-TachMaster 25K25C-TachMaster. Seed $200 asaileble you* H&5d1159 Fee 11W W 15th St Tuned Pipe Clamp $250** pipe included 8 oz $4 95* perfect basic trainer can flown three mistakes high still seen Balna ply conatruction 72 apan 106 sq in$9995 Powar 75-12 CU ifl Perfectfor4 cycle Dealer Inquiry Invted 1728 lywood SE Canton OH 44707 Send Si forCatalog 84-6810 H MFG A masking tape After drying primer sanded down tape level feath ered adjacent area tape removed line edge remaining primer stands above model surface amount tape thickness pronounced lines use double layers tape Heavy paint buildup over lines tends hide therefore light coats should added Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 49 better plane am pilot Its sheer delight air crowd-pleaser besides Lets look closely its par ticulars Exciter about same 'i Eurekaboth have 600 sq wings comparable moments tail feathers Exciter has time-honored NACA 2412 wing section la Falcon instead thick flat-bottom energy source 15-cell 12 Ah pack Motiva tion Astro 40 cobalt Robbe 50/14 cobalt Controls aileron elevator rudder electronic throttle original design Props have ranged 9 x 6 10 x 5 All-up weight 81 oz wing load ing 195 oz/sq ft honors Rules Thumb Results terrific Now some performance particulars Exciter does common stuff com fortable touch-and-goes easy rolls con secutive inside outside loops square loops Inverted breeze Snaps just Stall turns no sweat has aggressive takeoff grass almost /2 horsepower input available also very wide speed rangeand no exag geration siz~ long does fly 70 flights date 60 select ed representative Ten longest shortest flights dropped non represenative since test flights short charges etc 60 flights numerically averaged resulting average flight time takeoff taxi roll final touch 4 mm 54 sec fly ing generally mixture maneu vers mentioned above play throt tle allocate power needed gives what need need maxi mizes flight time such flights Regarding playing its interest ing note got used plane flights got better acro batically also longer duration example flight times about itial third Exciters total flights average about 4 mm 40 sec re cent third averages about 5 mm 10 sec done safe charging technique make no effort what soever input peak chargeeach flights 15-minute charge constant 42 Amps Now test flights mentioned Rule Thumb No 1 predicts Exciter should cruise ie just maintain level flight somewhat over 10 minutes charge described above test ed two flights different days wherein merely circled field low altitude playing throttle just maintain altitude two flight times logged 11 mm 1 sec 11 mm 32 sec considered close agreement prediction came out favorable side made flight low level circles full bore result 3 mm 36 sec flight very comfort able range maximum-available mini mum-required flight power usage Fur ther flight time average 4 mm 54 sec mentioned above just about predicted maximum time agrees guideline doubling calcu lated power-to-cruise good flights Exciter 1 unqualified success After theres much left say except can too dont have plans available planes sincerely feel Rules Thumb very good guidelines should always put ballpark achieving successful Electriclarge small may have scratch-build did Eureka Exciter besides rewards worth have some appealing kit mind mindful kits heavy another Rule Thumb youll no doubt have some modifying construction substitution material Remember importance weight Electric power system typically 40% 60% weight com pleted Electricthe covered model radio other half approximately Exciter power system weighs 29 oz battery plus 14 oz motor plus two ounces miscellaneous wiring etc about 54% total model weight memorable satisfac tions Exciter has given date opportunity comment glowingly friend fellow modeler greasy skeptic Bruce Im closing gap normally vocal greasy gasminded friend normally scoffs friendly way Electric endeavors seen several Exciter flights now no comment other mutter ing something about wheel choice looking good Im now working wheels Basic electricIty previous August 1985 installment continuing miiseries examined analog meter movements application multimeters seen various ranges multimeter accomplished switching various external resistors circuit meter movement also learned basic meter move ments require exceptionally small amounts power operate full-scale 134 Model Aviation THE ONE THAT WORKS PRO-CLAM P ITS SNAP CLEANERPolisher SUPER SHINE SUPER SLICK Glider Pilots Take Note Brass Tubing Replacement HEAT BENDABLE KZ Line CAdd $175 Add $050 Shipping Handling Dealer-Dist Inquiries Invited Jr STICKmwiw 904 478-6745 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR kraft Pro Line -7 c Futaba JR 43 West Nine Mile Rd Pensacola FL 32514 ~~2 millionths watt used am meter few tens microanips will drive full-scale used voltmeter small fraction volt suffices drive full-scale light useful voltage scale obtained switching large resistor series meter such say 10 volts drives meter full-scale resistors may have values hundreds thousands ohms higher-voltage ranges consequence voltage measurement battery ex ample draws very little current matter few micro-amperes thereby leaves measured device relatively un disturbedthe characteristic good voltmeter Item remember voltmeters multimeters used read voltage used measure voltage across electrical componentnever series elec trical circuit Using multimeter Want measure voltage six-cell motor battery What scale should use meter Lets see six cells 12 volts per cell con nected series should give us about seven volts typical nearby range multimeters 10 volts Use Next connect positive usually color-coded Red test lead positive battery ter minal negative usually color-cod ed Black test lead negative battery terminal meter pointer will move upscale will probably come rest around 72 volts Ni-Cd motor battery charged Simple eh what selected higher meter range say 50 volts youd still get reading _______SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO PAAKSKOKUFAN 3news I36 000In stoclr2000 I20 sage CATALOG Satstachon418 Oceanfront u S2006IgeSASE SCALE MOOELRESEARCH Guaranteed Newport Beach CaIrtornes 920cr meters pointer would way down near bottom scale graduations coarse hard read accurately Items remember use meter range allows largest pointer deflection still staying scale other extreme selected too low range pointer would over shoot meter scaleand wouldnt tell anything about battery voltage might damage meter well Remember read voltages across something select meter range will result easy-to-read pointer deflection Since multimeters offer large choice scales sure choose DC voltage rangeand read correct DC meter scalewhen measuring everything can think hobby Well look exceptions another time Refrain moving meters range-selector switch meter connected use unless pay very strict attention exactly what youre doing acciden tally slip selector switch current resistor range test leads connected voltage source can considerable damage meter continued meantime please forward questions include SASE please yours truly Bob Kopski 25 West End Dr Lans dale PA 19446and may happy Electric landings yours SILICONE TUBING tO2550 SMALL C 062 dl 6260 MEDC 062 dl 15400860061600 LARGE C 125 dla C 66006112582000 US & CAN POSTPAID L4RRY POD6E AFRO INC 42IICOTTAOE PE RD WHITE BEAR LIt UN 65110 RC Old-Timers/Mathews Continued page 51 Ever wished could quickly get landing gear off Old-Timer stow car clean out area around fuselage youre gonna love Vortac Mfg Cos Gear Locks look like ordinary nylon straps much thicker provide locking slot side uses included drilling jig secures end adjusts other screw tight latching swingover section remove gear just pushes slotted end releases things also great mounting cabanes bipes some OldTimer designs wire wing mounts Ive already mentioned Aces Tach Master have decided now absolute necessity field box another products equally im portant particularly 1AA Texaco flier Mini ESV just great checking battery charge 100 mA packs between flightsjust sure enough left last flight matter darn good safety practice size flight pack Did ever look meter transmitter think yourself So transmitter battery still up wonder what state flight battery little pocket-sized gem way sure Newsletters photos needed some reason several SAM chapters no longer sending newsletters Continued page 138 October 1 985 1 35 * A Futaba Distributor er Inquiries Welcome * * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488