Radio Control E lectrics Bob Kopski BLEAK Itis late October winter lies just ahead Naturally bleak winter means something folks have put up ie have forgo flying several times week cause snow wind cold temperature discourage such aero modeling pursuits course such conditions discouraging Gas flyin folks ad ditionally have contend cleaning off cold gooey glop planes sessions end Electric fliers take heart Electric works very well cold short shaking loose some snowflakes theres no cleanup contend Yes Electric works very well low tempera tures inclined write question concem mindwrite stored unheated area storage mately warm up battery pack little before about something else instead temperature has below freezing approxi- charging seems some readers have expen seriously Ive flying Electric year round since 1972 March 1987 fifteenth anniversary flying Electric no problemshort discomfort Just fly usual except thing planes have Did know new old Astro 05 cobalt motor head view two 1 has latest model right Note its distinctive feature isa pair Allen-head screws 2 7 oclock positions right new model disassembled something best tried Inexperienced old model Allen-head screws hold whole thing together Remove brushes firstand keep greasy fingers off commutator Astros Bob Boucher says 25 40 cobalts will changed too 50 Model Aviation Slick installation Jomar SC-4 speed coniroller red Ewings beautiful Astro Viking Plane uses geared Astro cobalt 05 swinging 11 x 6 prop seven 12 Ah cells All-up weight 48 oz Sport flying lots fun speed controller closer look some details Bobs new planea Leisure Lanzo Bomber decided rubberband tail L instead permanently building place orderto cut down possible damage during transit Also note battery-cooling-airoutlet duct bottom side fuselage ahead stab motor mounting plate assemblyR 18040 sheet aluminum sandwiched between motor housing reduction-gear case info column Notches prop will explained next month enced problems pack accepting charge extremely cold own models batteries stored unheated garage temperature nor mally remains above freezing coldest days have never experienced charging problems must therefore conclude some below freezing may experi ence some charging problems sounds like fits situation take heed further reminder cold batteries may deliver normal flight performance used quickly changes during after first cold flight day because battery quickly wanns up during flight Ive experienced number times charge launch first flight day plane sluggish two three minutes Thenalmost suddenly plane peps up battery becoming less cold Thereafter no matter cold par ticular flying session performance normal Merry cold weather Electric Motor mounts can take some interesting forms photos shows motor mount detail Leisure Lanzo Bomber motor Astro cobalt 15 gear drive Lanzo fuselage real challenge comes equipment instal lation photo shows two particulars reconciled motor mounting plate made 0040-in aluminum sheet cut out line fuselage front drilled appro- r priate manner fit between Astro 15 motor its matching gear drive assembly effect aluminum plate sandwiched between motor front-end bell gear box gear assembly mounting screws hold everything gether aluminum plate tum held front fuselage structure four 2-56 x 1/2-in sheet metal screws thread CyA strengthened balsa comer stock fuselage structure Thread screws place remove put drop thin CyA screw hole let set firm up threads made inserting screw first place youre sure theres no wet CyA remaining re install screws through motor mounting plate wood approach has worked out very well 40-mil plate does introduce slight gear mismatch fore aft have no problems far dont expect Upon reassembling gear mounting plate motor sure set proper gear mesh depth rela tive gear Astro instructions keep gears clean small amount white lithium grease Another photo illustrates aft end Lanzo fuselage went extra trouble Continued page 150 February 1987 51 New high-current up 30 amps ammeter Davey Systems Corp Molex connectors simply plug Astro wiring harness info column Versions other con nectors available meter should cover Electric modeling needs 1/32 scale plastic model kits Golden classic aircraft Colorful highly det miniatures Send $1 fully illustrated cata log other kits accessories Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines ore perfect converting CH Ignition system ore new kits plans airplanes lust becoming available perfect size engine Four stroke engines beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler & develops power-plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aldridge Doran Hiatt Cliff Bennett Otto Bernhart Maynard Hill used CH system last two world records Available two four stroke engines single twin cylinder Throttle Coupled Spark Advance kits available popular engines Custom engine set-up available Call write price quote Now IETCl electronic timing control information brochure price list send $100 Box 1732 I3jIhRiverton WY 82501 CH Electronics Phone 3078576897 TM Through modern technology have shed whole new light model airplane world U-TURN spinner barstock spinner precisely made tested speeds excess 36000 rpm registered virtually no run-out vibration conjunction its Ultra-Light design eliminates engine damage associated spinners currently 4-stroke engines Try spinner once will agree way turn TRU-TURN MAKE YOUR DAY FUNFLY SAFELY DEALERS INQUIRIES WELCOMED U SINK PSi EMENAIK SIEIPUINT NEW ZENDAK 6227 cu In$1I9E New Ouaa Si CDI 13-limlail Simm Ru SmileS S122J8 WmuslseSaNaiVwbeal $14235 hi hail Si Pew 01125 Oily 80235 SIMIHA EPAIKSliji pIes p3253 Jkbuw KNCSSPKPUNS 822K SINISITiSSIJE ba Mi. TOMAHAWKPiAK 82336 1131-KU Will 1km. 0-iMI IKAINEPUNS 822351131401*3535 JOe UaaswACUSiATPUN 813351531-011 SliJi IiALilEYlNS12335ZINOAIIS-38$12iSi SAC-ISSUAR21 CII 537 CDI 5 PUATS U1IS sealssares*21J5caulsMSS7iI iiWWL VEILS 5P3131w StasIs 82535 PUNS StIFlE SIIAIUSII 134 liaieuj 82535 133 TAUSiCUAFT er 133w Mimi 82535 VOLICIPUNE 133 GUi C0I3 $2235 Sinai 11-331 52 SlZJO Muil 5-ill ke medals S35J5 Praps 53 sIzes II TiP ft DTNATIIRUSI23% UP USOaSdIIFELTANKSliezSOJ532ez8715 FIKRLASS *130W tUFTS 5316 x32 leesIts 81135 24 MawSuits. A$2JIIKUU Seed liek lEu* 3 MD Ce JIM MESSERS QUALITY MODEL PRODUCTS Valley View Dr lax 43 Alleganv NY 14798 add some excitement Last week club participated annual Open House Eglin AFB Florida dont know RC clubs take part events like military installations around country club has putting static flying demon strations Eglin AFB Open House years look forward annual event partly because enjoy showing off mostly because always get new club members direct result demonstrations Part static display includes VCR TV monitor show several AMA vid eotapes Some kids adults watch way through tape tell us needs replaced dont notice keys success demonstra tion handout give interested spectators handout provides information about club AMA includes names telephone numbers club members can contacted additional information works us AMA dues went up So whats new What hasnt gone up lately agree its about time took charge own insurance program AMA membership still best buys around typographical error De cember column second paragraph about normalizing column read Basically scores flier earns front set judges divided score best flight front judges multiplied 1000 Its obvious should have everyone would earn 1000 points round Sorry Ron Van Putte 111 Sleepy Oaks Rd Ft Wal ton Beach FL 32548 RC Electrics/Kopski Continued page 51 rubbering-on tail assembly because Im ever bumping latter transit sometimes results broken balsa lost flying oppor tunity tail assembly glued place Im firmly-entrenched disciple fly fix less cult such needless damages contrary tenets cult little rubber can go long way toward keeping plane flyablewhich after purpose life flying model Visible also photo rear air exits experiencing excessive battery heat buildup due lack airflow through battery packa flow rather difficult provision model intended remove pack cooling between charges something normally proved quite unworkable So back building board Some considerable balsa chopping later front air intakes place course air trying come can theres way get out Thus aft air exitsmy afterburners Anyway Lanzo glides glides glides air passing through battery gets back reasonable temperature time plane lands friends entirely consistent fly policy motor modification followup Two columns ago described some changes Astro has recently made case assemblies Astro cobalt 05 15 motors months photos shows front-view difference old new versions motors another shows newer version comes apart Continued page 156 150 Model Aviation market Best have produced superior spinner very affordable price Available standard sizes both 2- Available Local Hobby Shop Soon ROMCO MFG INC 713 943-1867 PO Box 836 So Houston TX 77587 J-3 KITTEN ULTRALIGHT Best New Design Award Sun Fun Lakeland Florida Features 1/4 Scale 90 span 4 cycle 45 2 cycle 40 Plans $1750 ppd Dry Ridge Models 59 McCurry Rd Weaverville NC 28787 New Breed of electronic Sachs/Doimar Lightest weight ready-to-mount engines AU Engines Complete Nothing Extra Buy 34- *38000 42- *42000 lincludga Shipping & Handling Option engines Throttle-coupled spark advance- *5000 Features Customized newest German engines net parts Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition CH Electronics 048 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar Warranty Faulty Parts Workmanship NEW ADAPTER FOR Byrons 4 3 bladed props have prop adapter tft Sachs engine T5 G MFG 857 High Mountain Rd North Haledon NJ 075080201 427464$ 156 Model Aviation RC Electrics/Kopski Continued page 150 As can see newer version has two through-bolt screw heads visible front endbell bolts almost length motor thread rear end-bell thus holding entire case assembly together Removing screws allows easy disassembly motor housingbut sure remove brushes first Loosening bolts little allows brush position rotated slightly respect field magnets turn changes brush angle modifies performance motor Im hoping have some particulars pro cedure future column meantime youre sure what youre doing dont thing works dont fix way newer motor versions have some dimensional changes some parts case assembly such old new arma tures rear end-bells nor interchangeable Keep mind should have order re placement parts Specify version have new current meter has introduced Davey Systems Corporation Malvern PA should available dealers fails can write DSC Wood Lane Malvern PA 19335 meter costs $1995 shown photos has molex connectors mates Astro products version Tamiya connectors also available latter should popular car folks meter has single 30-amp range should cover just about Electrics needs its easy determine much current motor/prop combination drawing battery have connect meter leads between battery motor turn motor An instruction sheet includes necessary information mounting meter box panel can used Another part instruction sheet some what misleading however suggests lowest current draw/highest rpm prop voltage combination will give best all-around performance Well hard understand lowest current highest rpm occurs theres no prop Lets look little closely Motors may thought converters sorts motor converts stored energy battery powered model flight effect accomplished action turning propeller moving air air moved given time energy drained battery time simply means takes current allow motor turn bigger prop no propeller motor draws relatively small amount current battery enough overcome mechanical friction windage within motor assembly prop added air put motion motor doing work power demand battery goes up ie current drain increases So small prop will draw less current large prop about same rpm effect readily observed current meter course cannot just arbitrarily con tinue increase prop size overloading motor and/or battery risking damage subject covered some detail Model Avi ation November 1983 very neat installation Jomar SC-4 speed control shown photos SC-4 supplied requires addition aluminum heat 31 -Blbs2oz-5% HP 34-Bibs Z 02-5 HP TG Laser 200 499 Include Shipping Handling Glass body wheel pants cowl foam wIng aM balsa Included Hsrdws Kite Sadie 31 wIth pubis huluded 42-6 lbs 202-iMP Laser built bones*66986 RON CHIDGEYS TIGER TAIL 4 abailawe 8111 I,, CAJUN Il/C PRODUCTS 112Rosie23 LIflyoft LA 7U 3181 2327448Z 800 sq Basic Kit 5118 FikqI. F. F. C. Ply FOR NEW CATALOG MARRY B MIGLEY INC P o BOX 532 GLENWOOD ILL 60423 POT 0 GOLD RC SHOW SUNDAY FEB 8 87 1000-400 * Outdoor Flying Demonstrations * Swap Tables $5 advance reservations encouraged * Static Aircraft Display Prizes Awarded Popular Vote 300 sink keep power MOSFETS cool ef ficient Local Electric flier Fred Ewing simply cut aluminum size fit crosswise new Astro Viking shown aluminum plate attached two balsa rails side four small sheet metal screws speed control PC board hangs down fuselage installa tion made just inside fully-open cabin front plenty air flows past cooling plate onward through battery pack out fuselage bottom side windows covered clear MonoKote speed control always adds another dimension Electric model flying since power may applied required desired flight behavior instead being just off subject speed controls Id like pass along some comments Joe Utasi Jomar Some speed controls such Jomars SC-3 * Site Concessions offer built-in electronic brake feature designed rapidly stop prop rotation power shut down often used large foldingprop installations aid folding process However seems modelers too often just slam motor stick full full off no coast-down time prop rapid change extreme other causes rotational energy armature gears prop dumped poor little ol brake MOSFET very often simply gives up under such abusively large energy onslaught much less destructive technique slowly reduce applied power move full Off stick position allows some time rotational energy dissipate brake MOSFET will live much longer happier life Please note true general brand speed control electronic brake feature * Raffle & Door Prizes * FREE PARKING Thats another fun month Please forward comment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Heres wishing very happy safe Elec tric New Year RC Pylon Racing/Hager Continued page 54 Quarter Midget Championship Race Results FlierSi Airplane EnginePt Time Gail JacobsonGA Polekitty RY33 11810 Continued page 160 PRODUCTS FOR THE DISCERNING MODiLER Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsufpaSi February 1987 1 57 Swaps Dealers Manufacturers END SaUTHe ADMISSION DONATION S 3 ldMdual S 5 Fasily Gen Chairman Jack Allinger e 219 272-5073 advance table reservations contactDennis Norkus Kensington P1 awaka IN 46544 255-4366 Carry Largest Only Stock Kraft Parts World .. Kraft alive working KRAFT MIDWEST Li FLY WHAT FIX AuthOriZe Wurranty Service _________ KRI7~3 K- LINES 0. nnton . 50 d t 00fl 1t5 ecnJfl fllysf Also Service ACE It/Ctaba Shel Only Full Time Servicenter Midwest 117 East Main St Northvil le Michign 48167 Level] MBSd ZPhone 1-313-348-0085
Edition: Model Aviation - 1987/02
Page Numbers: 50, 51, 150, 156, 157
Radio Control E lectrics Bob Kopski BLEAK Itis late October winter lies just ahead Naturally bleak winter means something folks have put up ie have forgo flying several times week cause snow wind cold temperature discourage such aero modeling pursuits course such conditions discouraging Gas flyin folks ad ditionally have contend cleaning off cold gooey glop planes sessions end Electric fliers take heart Electric works very well cold short shaking loose some snowflakes theres no cleanup contend Yes Electric works very well low tempera tures inclined write question concem mindwrite stored unheated area storage mately warm up battery pack little before about something else instead temperature has below freezing approxi- charging seems some readers have expen seriously Ive flying Electric year round since 1972 March 1987 fifteenth anniversary flying Electric no problemshort discomfort Just fly usual except thing planes have Did know new old Astro 05 cobalt motor head view two 1 has latest model right Note its distinctive feature isa pair Allen-head screws 2 7 oclock positions right new model disassembled something best tried Inexperienced old model Allen-head screws hold whole thing together Remove brushes firstand keep greasy fingers off commutator Astros Bob Boucher says 25 40 cobalts will changed too 50 Model Aviation Slick installation Jomar SC-4 speed coniroller red Ewings beautiful Astro Viking Plane uses geared Astro cobalt 05 swinging 11 x 6 prop seven 12 Ah cells All-up weight 48 oz Sport flying lots fun speed controller closer look some details Bobs new planea Leisure Lanzo Bomber decided rubberband tail L instead permanently building place orderto cut down possible damage during transit Also note battery-cooling-airoutlet duct bottom side fuselage ahead stab motor mounting plate assemblyR 18040 sheet aluminum sandwiched between motor housing reduction-gear case info column Notches prop will explained next month enced problems pack accepting charge extremely cold own models batteries stored unheated garage temperature nor mally remains above freezing coldest days have never experienced charging problems must therefore conclude some below freezing may experi ence some charging problems sounds like fits situation take heed further reminder cold batteries may deliver normal flight performance used quickly changes during after first cold flight day because battery quickly wanns up during flight Ive experienced number times charge launch first flight day plane sluggish two three minutes Thenalmost suddenly plane peps up battery becoming less cold Thereafter no matter cold par ticular flying session performance normal Merry cold weather Electric Motor mounts can take some interesting forms photos shows motor mount detail Leisure Lanzo Bomber motor Astro cobalt 15 gear drive Lanzo fuselage real challenge comes equipment instal lation photo shows two particulars reconciled motor mounting plate made 0040-in aluminum sheet cut out line fuselage front drilled appro- r priate manner fit between Astro 15 motor its matching gear drive assembly effect aluminum plate sandwiched between motor front-end bell gear box gear assembly mounting screws hold everything gether aluminum plate tum held front fuselage structure four 2-56 x 1/2-in sheet metal screws thread CyA strengthened balsa comer stock fuselage structure Thread screws place remove put drop thin CyA screw hole let set firm up threads made inserting screw first place youre sure theres no wet CyA remaining re install screws through motor mounting plate wood approach has worked out very well 40-mil plate does introduce slight gear mismatch fore aft have no problems far dont expect Upon reassembling gear mounting plate motor sure set proper gear mesh depth rela tive gear Astro instructions keep gears clean small amount white lithium grease Another photo illustrates aft end Lanzo fuselage went extra trouble Continued page 150 February 1987 51 New high-current up 30 amps ammeter Davey Systems Corp Molex connectors simply plug Astro wiring harness info column Versions other con nectors available meter should cover Electric modeling needs 1/32 scale plastic model kits Golden classic aircraft Colorful highly det miniatures Send $1 fully illustrated cata log other kits accessories Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines ore perfect converting CH Ignition system ore new kits plans airplanes lust becoming available perfect size engine Four stroke engines beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler & develops power-plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aldridge Doran Hiatt Cliff Bennett Otto Bernhart Maynard Hill used CH system last two world records Available two four stroke engines single twin cylinder Throttle Coupled Spark Advance kits available popular engines Custom engine set-up available Call write price quote Now IETCl electronic timing control information brochure price list send $100 Box 1732 I3jIhRiverton WY 82501 CH Electronics Phone 3078576897 TM Through modern technology have shed whole new light model airplane world U-TURN spinner barstock spinner precisely made tested speeds excess 36000 rpm registered virtually no run-out vibration conjunction its Ultra-Light design eliminates engine damage associated spinners currently 4-stroke engines Try spinner once will agree way turn TRU-TURN MAKE YOUR DAY FUNFLY SAFELY DEALERS INQUIRIES WELCOMED U SINK PSi EMENAIK SIEIPUINT NEW ZENDAK 6227 cu In$1I9E New Ouaa Si CDI 13-limlail Simm Ru SmileS S122J8 WmuslseSaNaiVwbeal $14235 hi hail Si Pew 01125 Oily 80235 SIMIHA EPAIKSliji pIes p3253 Jkbuw KNCSSPKPUNS 822K SINISITiSSIJE ba Mi. TOMAHAWKPiAK 82336 1131-KU Will 1km. 0-iMI IKAINEPUNS 822351131401*3535 JOe UaaswACUSiATPUN 813351531-011 SliJi IiALilEYlNS12335ZINOAIIS-38$12iSi SAC-ISSUAR21 CII 537 CDI 5 PUATS U1IS sealssares*21J5caulsMSS7iI iiWWL VEILS 5P3131w StasIs 82535 PUNS StIFlE SIIAIUSII 134 liaieuj 82535 133 TAUSiCUAFT er 133w Mimi 82535 VOLICIPUNE 133 GUi C0I3 $2235 Sinai 11-331 52 SlZJO Muil 5-ill ke medals S35J5 Praps 53 sIzes II TiP ft DTNATIIRUSI23% UP USOaSdIIFELTANKSliezSOJ532ez8715 FIKRLASS *130W tUFTS 5316 x32 leesIts 81135 24 MawSuits. A$2JIIKUU Seed liek lEu* 3 MD Ce JIM MESSERS QUALITY MODEL PRODUCTS Valley View Dr lax 43 Alleganv NY 14798 add some excitement Last week club participated annual Open House Eglin AFB Florida dont know RC clubs take part events like military installations around country club has putting static flying demon strations Eglin AFB Open House years look forward annual event partly because enjoy showing off mostly because always get new club members direct result demonstrations Part static display includes VCR TV monitor show several AMA vid eotapes Some kids adults watch way through tape tell us needs replaced dont notice keys success demonstra tion handout give interested spectators handout provides information about club AMA includes names telephone numbers club members can contacted additional information works us AMA dues went up So whats new What hasnt gone up lately agree its about time took charge own insurance program AMA membership still best buys around typographical error De cember column second paragraph about normalizing column read Basically scores flier earns front set judges divided score best flight front judges multiplied 1000 Its obvious should have everyone would earn 1000 points round Sorry Ron Van Putte 111 Sleepy Oaks Rd Ft Wal ton Beach FL 32548 RC Electrics/Kopski Continued page 51 rubbering-on tail assembly because Im ever bumping latter transit sometimes results broken balsa lost flying oppor tunity tail assembly glued place Im firmly-entrenched disciple fly fix less cult such needless damages contrary tenets cult little rubber can go long way toward keeping plane flyablewhich after purpose life flying model Visible also photo rear air exits experiencing excessive battery heat buildup due lack airflow through battery packa flow rather difficult provision model intended remove pack cooling between charges something normally proved quite unworkable So back building board Some considerable balsa chopping later front air intakes place course air trying come can theres way get out Thus aft air exitsmy afterburners Anyway Lanzo glides glides glides air passing through battery gets back reasonable temperature time plane lands friends entirely consistent fly policy motor modification followup Two columns ago described some changes Astro has recently made case assemblies Astro cobalt 05 15 motors months photos shows front-view difference old new versions motors another shows newer version comes apart Continued page 156 150 Model Aviation market Best have produced superior spinner very affordable price Available standard sizes both 2- Available Local Hobby Shop Soon ROMCO MFG INC 713 943-1867 PO Box 836 So Houston TX 77587 J-3 KITTEN ULTRALIGHT Best New Design Award Sun Fun Lakeland Florida Features 1/4 Scale 90 span 4 cycle 45 2 cycle 40 Plans $1750 ppd Dry Ridge Models 59 McCurry Rd Weaverville NC 28787 New Breed of electronic Sachs/Doimar Lightest weight ready-to-mount engines AU Engines Complete Nothing Extra Buy 34- *38000 42- *42000 lincludga Shipping & Handling Option engines Throttle-coupled spark advance- *5000 Features Customized newest German engines net parts Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition CH Electronics 048 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar Warranty Faulty Parts Workmanship NEW ADAPTER FOR Byrons 4 3 bladed props have prop adapter tft Sachs engine T5 G MFG 857 High Mountain Rd North Haledon NJ 075080201 427464$ 156 Model Aviation RC Electrics/Kopski Continued page 150 As can see newer version has two through-bolt screw heads visible front endbell bolts almost length motor thread rear end-bell thus holding entire case assembly together Removing screws allows easy disassembly motor housingbut sure remove brushes first Loosening bolts little allows brush position rotated slightly respect field magnets turn changes brush angle modifies performance motor Im hoping have some particulars pro cedure future column meantime youre sure what youre doing dont thing works dont fix way newer motor versions have some dimensional changes some parts case assembly such old new arma tures rear end-bells nor interchangeable Keep mind should have order re placement parts Specify version have new current meter has introduced Davey Systems Corporation Malvern PA should available dealers fails can write DSC Wood Lane Malvern PA 19335 meter costs $1995 shown photos has molex connectors mates Astro products version Tamiya connectors also available latter should popular car folks meter has single 30-amp range should cover just about Electrics needs its easy determine much current motor/prop combination drawing battery have connect meter leads between battery motor turn motor An instruction sheet includes necessary information mounting meter box panel can used Another part instruction sheet some what misleading however suggests lowest current draw/highest rpm prop voltage combination will give best all-around performance Well hard understand lowest current highest rpm occurs theres no prop Lets look little closely Motors may thought converters sorts motor converts stored energy battery powered model flight effect accomplished action turning propeller moving air air moved given time energy drained battery time simply means takes current allow motor turn bigger prop no propeller motor draws relatively small amount current battery enough overcome mechanical friction windage within motor assembly prop added air put motion motor doing work power demand battery goes up ie current drain increases So small prop will draw less current large prop about same rpm effect readily observed current meter course cannot just arbitrarily con tinue increase prop size overloading motor and/or battery risking damage subject covered some detail Model Avi ation November 1983 very neat installation Jomar SC-4 speed control shown photos SC-4 supplied requires addition aluminum heat 31 -Blbs2oz-5% HP 34-Bibs Z 02-5 HP TG Laser 200 499 Include Shipping Handling Glass body wheel pants cowl foam wIng aM balsa Included Hsrdws Kite Sadie 31 wIth pubis huluded 42-6 lbs 202-iMP Laser built bones*66986 RON CHIDGEYS TIGER TAIL 4 abailawe 8111 I,, CAJUN Il/C PRODUCTS 112Rosie23 LIflyoft LA 7U 3181 2327448Z 800 sq Basic Kit 5118 FikqI. F. F. C. Ply FOR NEW CATALOG MARRY B MIGLEY INC P o BOX 532 GLENWOOD ILL 60423 POT 0 GOLD RC SHOW SUNDAY FEB 8 87 1000-400 * Outdoor Flying Demonstrations * Swap Tables $5 advance reservations encouraged * Static Aircraft Display Prizes Awarded Popular Vote 300 sink keep power MOSFETS cool ef ficient Local Electric flier Fred Ewing simply cut aluminum size fit crosswise new Astro Viking shown aluminum plate attached two balsa rails side four small sheet metal screws speed control PC board hangs down fuselage installa tion made just inside fully-open cabin front plenty air flows past cooling plate onward through battery pack out fuselage bottom side windows covered clear MonoKote speed control always adds another dimension Electric model flying since power may applied required desired flight behavior instead being just off subject speed controls Id like pass along some comments Joe Utasi Jomar Some speed controls such Jomars SC-3 * Site Concessions offer built-in electronic brake feature designed rapidly stop prop rotation power shut down often used large foldingprop installations aid folding process However seems modelers too often just slam motor stick full full off no coast-down time prop rapid change extreme other causes rotational energy armature gears prop dumped poor little ol brake MOSFET very often simply gives up under such abusively large energy onslaught much less destructive technique slowly reduce applied power move full Off stick position allows some time rotational energy dissipate brake MOSFET will live much longer happier life Please note true general brand speed control electronic brake feature * Raffle & Door Prizes * FREE PARKING Thats another fun month Please forward comment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Heres wishing very happy safe Elec tric New Year RC Pylon Racing/Hager Continued page 54 Quarter Midget Championship Race Results FlierSi Airplane EnginePt Time Gail JacobsonGA Polekitty RY33 11810 Continued page 160 PRODUCTS FOR THE DISCERNING MODiLER Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsufpaSi February 1987 1 57 Swaps Dealers Manufacturers END SaUTHe ADMISSION DONATION S 3 ldMdual S 5 Fasily Gen Chairman Jack Allinger e 219 272-5073 advance table reservations contactDennis Norkus Kensington P1 awaka IN 46544 255-4366 Carry Largest Only Stock Kraft Parts World .. Kraft alive working KRAFT MIDWEST Li FLY WHAT FIX AuthOriZe Wurranty Service _________ KRI7~3 K- LINES 0. nnton . 50 d t 00fl 1t5 ecnJfl fllysf Also Service ACE It/Ctaba Shel Only Full Time Servicenter Midwest 117 East Main St Northvil le Michign 48167 Level] MBSd ZPhone 1-313-348-0085
Edition: Model Aviation - 1987/02
Page Numbers: 50, 51, 150, 156, 157
Radio Control E lectrics Bob Kopski BLEAK Itis late October winter lies just ahead Naturally bleak winter means something folks have put up ie have forgo flying several times week cause snow wind cold temperature discourage such aero modeling pursuits course such conditions discouraging Gas flyin folks ad ditionally have contend cleaning off cold gooey glop planes sessions end Electric fliers take heart Electric works very well cold short shaking loose some snowflakes theres no cleanup contend Yes Electric works very well low tempera tures inclined write question concem mindwrite stored unheated area storage mately warm up battery pack little before about something else instead temperature has below freezing approxi- charging seems some readers have expen seriously Ive flying Electric year round since 1972 March 1987 fifteenth anniversary flying Electric no problemshort discomfort Just fly usual except thing planes have Did know new old Astro 05 cobalt motor head view two 1 has latest model right Note its distinctive feature isa pair Allen-head screws 2 7 oclock positions right new model disassembled something best tried Inexperienced old model Allen-head screws hold whole thing together Remove brushes firstand keep greasy fingers off commutator Astros Bob Boucher says 25 40 cobalts will changed too 50 Model Aviation Slick installation Jomar SC-4 speed coniroller red Ewings beautiful Astro Viking Plane uses geared Astro cobalt 05 swinging 11 x 6 prop seven 12 Ah cells All-up weight 48 oz Sport flying lots fun speed controller closer look some details Bobs new planea Leisure Lanzo Bomber decided rubberband tail L instead permanently building place orderto cut down possible damage during transit Also note battery-cooling-airoutlet duct bottom side fuselage ahead stab motor mounting plate assemblyR 18040 sheet aluminum sandwiched between motor housing reduction-gear case info column Notches prop will explained next month enced problems pack accepting charge extremely cold own models batteries stored unheated garage temperature nor mally remains above freezing coldest days have never experienced charging problems must therefore conclude some below freezing may experi ence some charging problems sounds like fits situation take heed further reminder cold batteries may deliver normal flight performance used quickly changes during after first cold flight day because battery quickly wanns up during flight Ive experienced number times charge launch first flight day plane sluggish two three minutes Thenalmost suddenly plane peps up battery becoming less cold Thereafter no matter cold par ticular flying session performance normal Merry cold weather Electric Motor mounts can take some interesting forms photos shows motor mount detail Leisure Lanzo Bomber motor Astro cobalt 15 gear drive Lanzo fuselage real challenge comes equipment instal lation photo shows two particulars reconciled motor mounting plate made 0040-in aluminum sheet cut out line fuselage front drilled appro- r priate manner fit between Astro 15 motor its matching gear drive assembly effect aluminum plate sandwiched between motor front-end bell gear box gear assembly mounting screws hold everything gether aluminum plate tum held front fuselage structure four 2-56 x 1/2-in sheet metal screws thread CyA strengthened balsa comer stock fuselage structure Thread screws place remove put drop thin CyA screw hole let set firm up threads made inserting screw first place youre sure theres no wet CyA remaining re install screws through motor mounting plate wood approach has worked out very well 40-mil plate does introduce slight gear mismatch fore aft have no problems far dont expect Upon reassembling gear mounting plate motor sure set proper gear mesh depth rela tive gear Astro instructions keep gears clean small amount white lithium grease Another photo illustrates aft end Lanzo fuselage went extra trouble Continued page 150 February 1987 51 New high-current up 30 amps ammeter Davey Systems Corp Molex connectors simply plug Astro wiring harness info column Versions other con nectors available meter should cover Electric modeling needs 1/32 scale plastic model kits Golden classic aircraft Colorful highly det miniatures Send $1 fully illustrated cata log other kits accessories Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines ore perfect converting CH Ignition system ore new kits plans airplanes lust becoming available perfect size engine Four stroke engines beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler & develops power-plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aldridge Doran Hiatt Cliff Bennett Otto Bernhart Maynard Hill used CH system last two world records Available two four stroke engines single twin cylinder Throttle Coupled Spark Advance kits available popular engines Custom engine set-up available Call write price quote Now IETCl electronic timing control information brochure price list send $100 Box 1732 I3jIhRiverton WY 82501 CH Electronics Phone 3078576897 TM Through modern technology have shed whole new light model airplane world U-TURN spinner barstock spinner precisely made tested speeds excess 36000 rpm registered virtually no run-out vibration conjunction its Ultra-Light design eliminates engine damage associated spinners currently 4-stroke engines Try spinner once will agree way turn TRU-TURN MAKE YOUR DAY FUNFLY SAFELY DEALERS INQUIRIES WELCOMED U SINK PSi EMENAIK SIEIPUINT NEW ZENDAK 6227 cu In$1I9E New Ouaa Si CDI 13-limlail Simm Ru SmileS S122J8 WmuslseSaNaiVwbeal $14235 hi hail Si Pew 01125 Oily 80235 SIMIHA EPAIKSliji pIes p3253 Jkbuw KNCSSPKPUNS 822K SINISITiSSIJE ba Mi. TOMAHAWKPiAK 82336 1131-KU Will 1km. 0-iMI IKAINEPUNS 822351131401*3535 JOe UaaswACUSiATPUN 813351531-011 SliJi IiALilEYlNS12335ZINOAIIS-38$12iSi SAC-ISSUAR21 CII 537 CDI 5 PUATS U1IS sealssares*21J5caulsMSS7iI iiWWL VEILS 5P3131w StasIs 82535 PUNS StIFlE SIIAIUSII 134 liaieuj 82535 133 TAUSiCUAFT er 133w Mimi 82535 VOLICIPUNE 133 GUi C0I3 $2235 Sinai 11-331 52 SlZJO Muil 5-ill ke medals S35J5 Praps 53 sIzes II TiP ft DTNATIIRUSI23% UP USOaSdIIFELTANKSliezSOJ532ez8715 FIKRLASS *130W tUFTS 5316 x32 leesIts 81135 24 MawSuits. A$2JIIKUU Seed liek lEu* 3 MD Ce JIM MESSERS QUALITY MODEL PRODUCTS Valley View Dr lax 43 Alleganv NY 14798 add some excitement Last week club participated annual Open House Eglin AFB Florida dont know RC clubs take part events like military installations around country club has putting static flying demon strations Eglin AFB Open House years look forward annual event partly because enjoy showing off mostly because always get new club members direct result demonstrations Part static display includes VCR TV monitor show several AMA vid eotapes Some kids adults watch way through tape tell us needs replaced dont notice keys success demonstra tion handout give interested spectators handout provides information about club AMA includes names telephone numbers club members can contacted additional information works us AMA dues went up So whats new What hasnt gone up lately agree its about time took charge own insurance program AMA membership still best buys around typographical error De cember column second paragraph about normalizing column read Basically scores flier earns front set judges divided score best flight front judges multiplied 1000 Its obvious should have everyone would earn 1000 points round Sorry Ron Van Putte 111 Sleepy Oaks Rd Ft Wal ton Beach FL 32548 RC Electrics/Kopski Continued page 51 rubbering-on tail assembly because Im ever bumping latter transit sometimes results broken balsa lost flying oppor tunity tail assembly glued place Im firmly-entrenched disciple fly fix less cult such needless damages contrary tenets cult little rubber can go long way toward keeping plane flyablewhich after purpose life flying model Visible also photo rear air exits experiencing excessive battery heat buildup due lack airflow through battery packa flow rather difficult provision model intended remove pack cooling between charges something normally proved quite unworkable So back building board Some considerable balsa chopping later front air intakes place course air trying come can theres way get out Thus aft air exitsmy afterburners Anyway Lanzo glides glides glides air passing through battery gets back reasonable temperature time plane lands friends entirely consistent fly policy motor modification followup Two columns ago described some changes Astro has recently made case assemblies Astro cobalt 05 15 motors months photos shows front-view difference old new versions motors another shows newer version comes apart Continued page 156 150 Model Aviation market Best have produced superior spinner very affordable price Available standard sizes both 2- Available Local Hobby Shop Soon ROMCO MFG INC 713 943-1867 PO Box 836 So Houston TX 77587 J-3 KITTEN ULTRALIGHT Best New Design Award Sun Fun Lakeland Florida Features 1/4 Scale 90 span 4 cycle 45 2 cycle 40 Plans $1750 ppd Dry Ridge Models 59 McCurry Rd Weaverville NC 28787 New Breed of electronic Sachs/Doimar Lightest weight ready-to-mount engines AU Engines Complete Nothing Extra Buy 34- *38000 42- *42000 lincludga Shipping & Handling Option engines Throttle-coupled spark advance- *5000 Features Customized newest German engines net parts Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition CH Electronics 048 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar Warranty Faulty Parts Workmanship NEW ADAPTER FOR Byrons 4 3 bladed props have prop adapter tft Sachs engine T5 G MFG 857 High Mountain Rd North Haledon NJ 075080201 427464$ 156 Model Aviation RC Electrics/Kopski Continued page 150 As can see newer version has two through-bolt screw heads visible front endbell bolts almost length motor thread rear end-bell thus holding entire case assembly together Removing screws allows easy disassembly motor housingbut sure remove brushes first Loosening bolts little allows brush position rotated slightly respect field magnets turn changes brush angle modifies performance motor Im hoping have some particulars pro cedure future column meantime youre sure what youre doing dont thing works dont fix way newer motor versions have some dimensional changes some parts case assembly such old new arma tures rear end-bells nor interchangeable Keep mind should have order re placement parts Specify version have new current meter has introduced Davey Systems Corporation Malvern PA should available dealers fails can write DSC Wood Lane Malvern PA 19335 meter costs $1995 shown photos has molex connectors mates Astro products version Tamiya connectors also available latter should popular car folks meter has single 30-amp range should cover just about Electrics needs its easy determine much current motor/prop combination drawing battery have connect meter leads between battery motor turn motor An instruction sheet includes necessary information mounting meter box panel can used Another part instruction sheet some what misleading however suggests lowest current draw/highest rpm prop voltage combination will give best all-around performance Well hard understand lowest current highest rpm occurs theres no prop Lets look little closely Motors may thought converters sorts motor converts stored energy battery powered model flight effect accomplished action turning propeller moving air air moved given time energy drained battery time simply means takes current allow motor turn bigger prop no propeller motor draws relatively small amount current battery enough overcome mechanical friction windage within motor assembly prop added air put motion motor doing work power demand battery goes up ie current drain increases So small prop will draw less current large prop about same rpm effect readily observed current meter course cannot just arbitrarily con tinue increase prop size overloading motor and/or battery risking damage subject covered some detail Model Avi ation November 1983 very neat installation Jomar SC-4 speed control shown photos SC-4 supplied requires addition aluminum heat 31 -Blbs2oz-5% HP 34-Bibs Z 02-5 HP TG Laser 200 499 Include Shipping Handling Glass body wheel pants cowl foam wIng aM balsa Included Hsrdws Kite Sadie 31 wIth pubis huluded 42-6 lbs 202-iMP Laser built bones*66986 RON CHIDGEYS TIGER TAIL 4 abailawe 8111 I,, CAJUN Il/C PRODUCTS 112Rosie23 LIflyoft LA 7U 3181 2327448Z 800 sq Basic Kit 5118 FikqI. F. F. C. Ply FOR NEW CATALOG MARRY B MIGLEY INC P o BOX 532 GLENWOOD ILL 60423 POT 0 GOLD RC SHOW SUNDAY FEB 8 87 1000-400 * Outdoor Flying Demonstrations * Swap Tables $5 advance reservations encouraged * Static Aircraft Display Prizes Awarded Popular Vote 300 sink keep power MOSFETS cool ef ficient Local Electric flier Fred Ewing simply cut aluminum size fit crosswise new Astro Viking shown aluminum plate attached two balsa rails side four small sheet metal screws speed control PC board hangs down fuselage installa tion made just inside fully-open cabin front plenty air flows past cooling plate onward through battery pack out fuselage bottom side windows covered clear MonoKote speed control always adds another dimension Electric model flying since power may applied required desired flight behavior instead being just off subject speed controls Id like pass along some comments Joe Utasi Jomar Some speed controls such Jomars SC-3 * Site Concessions offer built-in electronic brake feature designed rapidly stop prop rotation power shut down often used large foldingprop installations aid folding process However seems modelers too often just slam motor stick full full off no coast-down time prop rapid change extreme other causes rotational energy armature gears prop dumped poor little ol brake MOSFET very often simply gives up under such abusively large energy onslaught much less destructive technique slowly reduce applied power move full Off stick position allows some time rotational energy dissipate brake MOSFET will live much longer happier life Please note true general brand speed control electronic brake feature * Raffle & Door Prizes * FREE PARKING Thats another fun month Please forward comment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Heres wishing very happy safe Elec tric New Year RC Pylon Racing/Hager Continued page 54 Quarter Midget Championship Race Results FlierSi Airplane EnginePt Time Gail JacobsonGA Polekitty RY33 11810 Continued page 160 PRODUCTS FOR THE DISCERNING MODiLER Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsufpaSi February 1987 1 57 Swaps Dealers Manufacturers END SaUTHe ADMISSION DONATION S 3 ldMdual S 5 Fasily Gen Chairman Jack Allinger e 219 272-5073 advance table reservations contactDennis Norkus Kensington P1 awaka IN 46544 255-4366 Carry Largest Only Stock Kraft Parts World .. Kraft alive working KRAFT MIDWEST Li FLY WHAT FIX AuthOriZe Wurranty Service _________ KRI7~3 K- LINES 0. nnton . 50 d t 00fl 1t5 ecnJfl fllysf Also Service ACE It/Ctaba Shel Only Full Time Servicenter Midwest 117 East Main St Northvil le Michign 48167 Level] MBSd ZPhone 1-313-348-0085
Edition: Model Aviation - 1987/02
Page Numbers: 50, 51, 150, 156, 157
Radio Control E lectrics Bob Kopski BLEAK Itis late October winter lies just ahead Naturally bleak winter means something folks have put up ie have forgo flying several times week cause snow wind cold temperature discourage such aero modeling pursuits course such conditions discouraging Gas flyin folks ad ditionally have contend cleaning off cold gooey glop planes sessions end Electric fliers take heart Electric works very well cold short shaking loose some snowflakes theres no cleanup contend Yes Electric works very well low tempera tures inclined write question concem mindwrite stored unheated area storage mately warm up battery pack little before about something else instead temperature has below freezing approxi- charging seems some readers have expen seriously Ive flying Electric year round since 1972 March 1987 fifteenth anniversary flying Electric no problemshort discomfort Just fly usual except thing planes have Did know new old Astro 05 cobalt motor head view two 1 has latest model right Note its distinctive feature isa pair Allen-head screws 2 7 oclock positions right new model disassembled something best tried Inexperienced old model Allen-head screws hold whole thing together Remove brushes firstand keep greasy fingers off commutator Astros Bob Boucher says 25 40 cobalts will changed too 50 Model Aviation Slick installation Jomar SC-4 speed coniroller red Ewings beautiful Astro Viking Plane uses geared Astro cobalt 05 swinging 11 x 6 prop seven 12 Ah cells All-up weight 48 oz Sport flying lots fun speed controller closer look some details Bobs new planea Leisure Lanzo Bomber decided rubberband tail L instead permanently building place orderto cut down possible damage during transit Also note battery-cooling-airoutlet duct bottom side fuselage ahead stab motor mounting plate assemblyR 18040 sheet aluminum sandwiched between motor housing reduction-gear case info column Notches prop will explained next month enced problems pack accepting charge extremely cold own models batteries stored unheated garage temperature nor mally remains above freezing coldest days have never experienced charging problems must therefore conclude some below freezing may experi ence some charging problems sounds like fits situation take heed further reminder cold batteries may deliver normal flight performance used quickly changes during after first cold flight day because battery quickly wanns up during flight Ive experienced number times charge launch first flight day plane sluggish two three minutes Thenalmost suddenly plane peps up battery becoming less cold Thereafter no matter cold par ticular flying session performance normal Merry cold weather Electric Motor mounts can take some interesting forms photos shows motor mount detail Leisure Lanzo Bomber motor Astro cobalt 15 gear drive Lanzo fuselage real challenge comes equipment instal lation photo shows two particulars reconciled motor mounting plate made 0040-in aluminum sheet cut out line fuselage front drilled appro- r priate manner fit between Astro 15 motor its matching gear drive assembly effect aluminum plate sandwiched between motor front-end bell gear box gear assembly mounting screws hold everything gether aluminum plate tum held front fuselage structure four 2-56 x 1/2-in sheet metal screws thread CyA strengthened balsa comer stock fuselage structure Thread screws place remove put drop thin CyA screw hole let set firm up threads made inserting screw first place youre sure theres no wet CyA remaining re install screws through motor mounting plate wood approach has worked out very well 40-mil plate does introduce slight gear mismatch fore aft have no problems far dont expect Upon reassembling gear mounting plate motor sure set proper gear mesh depth rela tive gear Astro instructions keep gears clean small amount white lithium grease Another photo illustrates aft end Lanzo fuselage went extra trouble Continued page 150 February 1987 51 New high-current up 30 amps ammeter Davey Systems Corp Molex connectors simply plug Astro wiring harness info column Versions other con nectors available meter should cover Electric modeling needs 1/32 scale plastic model kits Golden classic aircraft Colorful highly det miniatures Send $1 fully illustrated cata log other kits accessories Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines ore perfect converting CH Ignition system ore new kits plans airplanes lust becoming available perfect size engine Four stroke engines beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler & develops power-plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aldridge Doran Hiatt Cliff Bennett Otto Bernhart Maynard Hill used CH system last two world records Available two four stroke engines single twin cylinder Throttle Coupled Spark Advance kits available popular engines Custom engine set-up available Call write price quote Now IETCl electronic timing control information brochure price list send $100 Box 1732 I3jIhRiverton WY 82501 CH Electronics Phone 3078576897 TM Through modern technology have shed whole new light model airplane world U-TURN spinner barstock spinner precisely made tested speeds excess 36000 rpm registered virtually no run-out vibration conjunction its Ultra-Light design eliminates engine damage associated spinners currently 4-stroke engines Try spinner once will agree way turn TRU-TURN MAKE YOUR DAY FUNFLY SAFELY DEALERS INQUIRIES WELCOMED U SINK PSi EMENAIK SIEIPUINT NEW ZENDAK 6227 cu In$1I9E New Ouaa Si CDI 13-limlail Simm Ru SmileS S122J8 WmuslseSaNaiVwbeal $14235 hi hail Si Pew 01125 Oily 80235 SIMIHA EPAIKSliji pIes p3253 Jkbuw KNCSSPKPUNS 822K SINISITiSSIJE ba Mi. TOMAHAWKPiAK 82336 1131-KU Will 1km. 0-iMI IKAINEPUNS 822351131401*3535 JOe UaaswACUSiATPUN 813351531-011 SliJi IiALilEYlNS12335ZINOAIIS-38$12iSi SAC-ISSUAR21 CII 537 CDI 5 PUATS U1IS sealssares*21J5caulsMSS7iI iiWWL VEILS 5P3131w StasIs 82535 PUNS StIFlE SIIAIUSII 134 liaieuj 82535 133 TAUSiCUAFT er 133w Mimi 82535 VOLICIPUNE 133 GUi C0I3 $2235 Sinai 11-331 52 SlZJO Muil 5-ill ke medals S35J5 Praps 53 sIzes II TiP ft DTNATIIRUSI23% UP USOaSdIIFELTANKSliezSOJ532ez8715 FIKRLASS *130W tUFTS 5316 x32 leesIts 81135 24 MawSuits. A$2JIIKUU Seed liek lEu* 3 MD Ce JIM MESSERS QUALITY MODEL PRODUCTS Valley View Dr lax 43 Alleganv NY 14798 add some excitement Last week club participated annual Open House Eglin AFB Florida dont know RC clubs take part events like military installations around country club has putting static flying demon strations Eglin AFB Open House years look forward annual event partly because enjoy showing off mostly because always get new club members direct result demonstrations Part static display includes VCR TV monitor show several AMA vid eotapes Some kids adults watch way through tape tell us needs replaced dont notice keys success demonstra tion handout give interested spectators handout provides information about club AMA includes names telephone numbers club members can contacted additional information works us AMA dues went up So whats new What hasnt gone up lately agree its about time took charge own insurance program AMA membership still best buys around typographical error De cember column second paragraph about normalizing column read Basically scores flier earns front set judges divided score best flight front judges multiplied 1000 Its obvious should have everyone would earn 1000 points round Sorry Ron Van Putte 111 Sleepy Oaks Rd Ft Wal ton Beach FL 32548 RC Electrics/Kopski Continued page 51 rubbering-on tail assembly because Im ever bumping latter transit sometimes results broken balsa lost flying oppor tunity tail assembly glued place Im firmly-entrenched disciple fly fix less cult such needless damages contrary tenets cult little rubber can go long way toward keeping plane flyablewhich after purpose life flying model Visible also photo rear air exits experiencing excessive battery heat buildup due lack airflow through battery packa flow rather difficult provision model intended remove pack cooling between charges something normally proved quite unworkable So back building board Some considerable balsa chopping later front air intakes place course air trying come can theres way get out Thus aft air exitsmy afterburners Anyway Lanzo glides glides glides air passing through battery gets back reasonable temperature time plane lands friends entirely consistent fly policy motor modification followup Two columns ago described some changes Astro has recently made case assemblies Astro cobalt 05 15 motors months photos shows front-view difference old new versions motors another shows newer version comes apart Continued page 156 150 Model Aviation market Best have produced superior spinner very affordable price Available standard sizes both 2- Available Local Hobby Shop Soon ROMCO MFG INC 713 943-1867 PO Box 836 So Houston TX 77587 J-3 KITTEN ULTRALIGHT Best New Design Award Sun Fun Lakeland Florida Features 1/4 Scale 90 span 4 cycle 45 2 cycle 40 Plans $1750 ppd Dry Ridge Models 59 McCurry Rd Weaverville NC 28787 New Breed of electronic Sachs/Doimar Lightest weight ready-to-mount engines AU Engines Complete Nothing Extra Buy 34- *38000 42- *42000 lincludga Shipping & Handling Option engines Throttle-coupled spark advance- *5000 Features Customized newest German engines net parts Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition CH Electronics 048 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar Warranty Faulty Parts Workmanship NEW ADAPTER FOR Byrons 4 3 bladed props have prop adapter tft Sachs engine T5 G MFG 857 High Mountain Rd North Haledon NJ 075080201 427464$ 156 Model Aviation RC Electrics/Kopski Continued page 150 As can see newer version has two through-bolt screw heads visible front endbell bolts almost length motor thread rear end-bell thus holding entire case assembly together Removing screws allows easy disassembly motor housingbut sure remove brushes first Loosening bolts little allows brush position rotated slightly respect field magnets turn changes brush angle modifies performance motor Im hoping have some particulars pro cedure future column meantime youre sure what youre doing dont thing works dont fix way newer motor versions have some dimensional changes some parts case assembly such old new arma tures rear end-bells nor interchangeable Keep mind should have order re placement parts Specify version have new current meter has introduced Davey Systems Corporation Malvern PA should available dealers fails can write DSC Wood Lane Malvern PA 19335 meter costs $1995 shown photos has molex connectors mates Astro products version Tamiya connectors also available latter should popular car folks meter has single 30-amp range should cover just about Electrics needs its easy determine much current motor/prop combination drawing battery have connect meter leads between battery motor turn motor An instruction sheet includes necessary information mounting meter box panel can used Another part instruction sheet some what misleading however suggests lowest current draw/highest rpm prop voltage combination will give best all-around performance Well hard understand lowest current highest rpm occurs theres no prop Lets look little closely Motors may thought converters sorts motor converts stored energy battery powered model flight effect accomplished action turning propeller moving air air moved given time energy drained battery time simply means takes current allow motor turn bigger prop no propeller motor draws relatively small amount current battery enough overcome mechanical friction windage within motor assembly prop added air put motion motor doing work power demand battery goes up ie current drain increases So small prop will draw less current large prop about same rpm effect readily observed current meter course cannot just arbitrarily con tinue increase prop size overloading motor and/or battery risking damage subject covered some detail Model Avi ation November 1983 very neat installation Jomar SC-4 speed control shown photos SC-4 supplied requires addition aluminum heat 31 -Blbs2oz-5% HP 34-Bibs Z 02-5 HP TG Laser 200 499 Include Shipping Handling Glass body wheel pants cowl foam wIng aM balsa Included Hsrdws Kite Sadie 31 wIth pubis huluded 42-6 lbs 202-iMP Laser built bones*66986 RON CHIDGEYS TIGER TAIL 4 abailawe 8111 I,, CAJUN Il/C PRODUCTS 112Rosie23 LIflyoft LA 7U 3181 2327448Z 800 sq Basic Kit 5118 FikqI. F. F. C. Ply FOR NEW CATALOG MARRY B MIGLEY INC P o BOX 532 GLENWOOD ILL 60423 POT 0 GOLD RC SHOW SUNDAY FEB 8 87 1000-400 * Outdoor Flying Demonstrations * Swap Tables $5 advance reservations encouraged * Static Aircraft Display Prizes Awarded Popular Vote 300 sink keep power MOSFETS cool ef ficient Local Electric flier Fred Ewing simply cut aluminum size fit crosswise new Astro Viking shown aluminum plate attached two balsa rails side four small sheet metal screws speed control PC board hangs down fuselage installa tion made just inside fully-open cabin front plenty air flows past cooling plate onward through battery pack out fuselage bottom side windows covered clear MonoKote speed control always adds another dimension Electric model flying since power may applied required desired flight behavior instead being just off subject speed controls Id like pass along some comments Joe Utasi Jomar Some speed controls such Jomars SC-3 * Site Concessions offer built-in electronic brake feature designed rapidly stop prop rotation power shut down often used large foldingprop installations aid folding process However seems modelers too often just slam motor stick full full off no coast-down time prop rapid change extreme other causes rotational energy armature gears prop dumped poor little ol brake MOSFET very often simply gives up under such abusively large energy onslaught much less destructive technique slowly reduce applied power move full Off stick position allows some time rotational energy dissipate brake MOSFET will live much longer happier life Please note true general brand speed control electronic brake feature * Raffle & Door Prizes * FREE PARKING Thats another fun month Please forward comment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Heres wishing very happy safe Elec tric New Year RC Pylon Racing/Hager Continued page 54 Quarter Midget Championship Race Results FlierSi Airplane EnginePt Time Gail JacobsonGA Polekitty RY33 11810 Continued page 160 PRODUCTS FOR THE DISCERNING MODiLER Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsufpaSi February 1987 1 57 Swaps Dealers Manufacturers END SaUTHe ADMISSION DONATION S 3 ldMdual S 5 Fasily Gen Chairman Jack Allinger e 219 272-5073 advance table reservations contactDennis Norkus Kensington P1 awaka IN 46544 255-4366 Carry Largest Only Stock Kraft Parts World .. Kraft alive working KRAFT MIDWEST Li FLY WHAT FIX AuthOriZe Wurranty Service _________ KRI7~3 K- LINES 0. nnton . 50 d t 00fl 1t5 ecnJfl fllysf Also Service ACE It/Ctaba Shel Only Full Time Servicenter Midwest 117 East Main St Northvil le Michign 48167 Level] MBSd ZPhone 1-313-348-0085
Edition: Model Aviation - 1987/02
Page Numbers: 50, 51, 150, 156, 157
Radio Control E lectrics Bob Kopski BLEAK Itis late October winter lies just ahead Naturally bleak winter means something folks have put up ie have forgo flying several times week cause snow wind cold temperature discourage such aero modeling pursuits course such conditions discouraging Gas flyin folks ad ditionally have contend cleaning off cold gooey glop planes sessions end Electric fliers take heart Electric works very well cold short shaking loose some snowflakes theres no cleanup contend Yes Electric works very well low tempera tures inclined write question concem mindwrite stored unheated area storage mately warm up battery pack little before about something else instead temperature has below freezing approxi- charging seems some readers have expen seriously Ive flying Electric year round since 1972 March 1987 fifteenth anniversary flying Electric no problemshort discomfort Just fly usual except thing planes have Did know new old Astro 05 cobalt motor head view two 1 has latest model right Note its distinctive feature isa pair Allen-head screws 2 7 oclock positions right new model disassembled something best tried Inexperienced old model Allen-head screws hold whole thing together Remove brushes firstand keep greasy fingers off commutator Astros Bob Boucher says 25 40 cobalts will changed too 50 Model Aviation Slick installation Jomar SC-4 speed coniroller red Ewings beautiful Astro Viking Plane uses geared Astro cobalt 05 swinging 11 x 6 prop seven 12 Ah cells All-up weight 48 oz Sport flying lots fun speed controller closer look some details Bobs new planea Leisure Lanzo Bomber decided rubberband tail L instead permanently building place orderto cut down possible damage during transit Also note battery-cooling-airoutlet duct bottom side fuselage ahead stab motor mounting plate assemblyR 18040 sheet aluminum sandwiched between motor housing reduction-gear case info column Notches prop will explained next month enced problems pack accepting charge extremely cold own models batteries stored unheated garage temperature nor mally remains above freezing coldest days have never experienced charging problems must therefore conclude some below freezing may experi ence some charging problems sounds like fits situation take heed further reminder cold batteries may deliver normal flight performance used quickly changes during after first cold flight day because battery quickly wanns up during flight Ive experienced number times charge launch first flight day plane sluggish two three minutes Thenalmost suddenly plane peps up battery becoming less cold Thereafter no matter cold par ticular flying session performance normal Merry cold weather Electric Motor mounts can take some interesting forms photos shows motor mount detail Leisure Lanzo Bomber motor Astro cobalt 15 gear drive Lanzo fuselage real challenge comes equipment instal lation photo shows two particulars reconciled motor mounting plate made 0040-in aluminum sheet cut out line fuselage front drilled appro- r priate manner fit between Astro 15 motor its matching gear drive assembly effect aluminum plate sandwiched between motor front-end bell gear box gear assembly mounting screws hold everything gether aluminum plate tum held front fuselage structure four 2-56 x 1/2-in sheet metal screws thread CyA strengthened balsa comer stock fuselage structure Thread screws place remove put drop thin CyA screw hole let set firm up threads made inserting screw first place youre sure theres no wet CyA remaining re install screws through motor mounting plate wood approach has worked out very well 40-mil plate does introduce slight gear mismatch fore aft have no problems far dont expect Upon reassembling gear mounting plate motor sure set proper gear mesh depth rela tive gear Astro instructions keep gears clean small amount white lithium grease Another photo illustrates aft end Lanzo fuselage went extra trouble Continued page 150 February 1987 51 New high-current up 30 amps ammeter Davey Systems Corp Molex connectors simply plug Astro wiring harness info column Versions other con nectors available meter should cover Electric modeling needs 1/32 scale plastic model kits Golden classic aircraft Colorful highly det miniatures Send $1 fully illustrated cata log other kits accessories Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines ore perfect converting CH Ignition system ore new kits plans airplanes lust becoming available perfect size engine Four stroke engines beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler & develops power-plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aldridge Doran Hiatt Cliff Bennett Otto Bernhart Maynard Hill used CH system last two world records Available two four stroke engines single twin cylinder Throttle Coupled Spark Advance kits available popular engines Custom engine set-up available Call write price quote Now IETCl electronic timing control information brochure price list send $100 Box 1732 I3jIhRiverton WY 82501 CH Electronics Phone 3078576897 TM Through modern technology have shed whole new light model airplane world U-TURN spinner barstock spinner precisely made tested speeds excess 36000 rpm registered virtually no run-out vibration conjunction its Ultra-Light design eliminates engine damage associated spinners currently 4-stroke engines Try spinner once will agree way turn TRU-TURN MAKE YOUR DAY FUNFLY SAFELY DEALERS INQUIRIES WELCOMED U SINK PSi EMENAIK SIEIPUINT NEW ZENDAK 6227 cu In$1I9E New Ouaa Si CDI 13-limlail Simm Ru SmileS S122J8 WmuslseSaNaiVwbeal $14235 hi hail Si Pew 01125 Oily 80235 SIMIHA EPAIKSliji pIes p3253 Jkbuw KNCSSPKPUNS 822K SINISITiSSIJE ba Mi. TOMAHAWKPiAK 82336 1131-KU Will 1km. 0-iMI IKAINEPUNS 822351131401*3535 JOe UaaswACUSiATPUN 813351531-011 SliJi IiALilEYlNS12335ZINOAIIS-38$12iSi SAC-ISSUAR21 CII 537 CDI 5 PUATS U1IS sealssares*21J5caulsMSS7iI iiWWL VEILS 5P3131w StasIs 82535 PUNS StIFlE SIIAIUSII 134 liaieuj 82535 133 TAUSiCUAFT er 133w Mimi 82535 VOLICIPUNE 133 GUi C0I3 $2235 Sinai 11-331 52 SlZJO Muil 5-ill ke medals S35J5 Praps 53 sIzes II TiP ft DTNATIIRUSI23% UP USOaSdIIFELTANKSliezSOJ532ez8715 FIKRLASS *130W tUFTS 5316 x32 leesIts 81135 24 MawSuits. A$2JIIKUU Seed liek lEu* 3 MD Ce JIM MESSERS QUALITY MODEL PRODUCTS Valley View Dr lax 43 Alleganv NY 14798 add some excitement Last week club participated annual Open House Eglin AFB Florida dont know RC clubs take part events like military installations around country club has putting static flying demon strations Eglin AFB Open House years look forward annual event partly because enjoy showing off mostly because always get new club members direct result demonstrations Part static display includes VCR TV monitor show several AMA vid eotapes Some kids adults watch way through tape tell us needs replaced dont notice keys success demonstra tion handout give interested spectators handout provides information about club AMA includes names telephone numbers club members can contacted additional information works us AMA dues went up So whats new What hasnt gone up lately agree its about time took charge own insurance program AMA membership still best buys around typographical error De cember column second paragraph about normalizing column read Basically scores flier earns front set judges divided score best flight front judges multiplied 1000 Its obvious should have everyone would earn 1000 points round Sorry Ron Van Putte 111 Sleepy Oaks Rd Ft Wal ton Beach FL 32548 RC Electrics/Kopski Continued page 51 rubbering-on tail assembly because Im ever bumping latter transit sometimes results broken balsa lost flying oppor tunity tail assembly glued place Im firmly-entrenched disciple fly fix less cult such needless damages contrary tenets cult little rubber can go long way toward keeping plane flyablewhich after purpose life flying model Visible also photo rear air exits experiencing excessive battery heat buildup due lack airflow through battery packa flow rather difficult provision model intended remove pack cooling between charges something normally proved quite unworkable So back building board Some considerable balsa chopping later front air intakes place course air trying come can theres way get out Thus aft air exitsmy afterburners Anyway Lanzo glides glides glides air passing through battery gets back reasonable temperature time plane lands friends entirely consistent fly policy motor modification followup Two columns ago described some changes Astro has recently made case assemblies Astro cobalt 05 15 motors months photos shows front-view difference old new versions motors another shows newer version comes apart Continued page 156 150 Model Aviation market Best have produced superior spinner very affordable price Available standard sizes both 2- Available Local Hobby Shop Soon ROMCO MFG INC 713 943-1867 PO Box 836 So Houston TX 77587 J-3 KITTEN ULTRALIGHT Best New Design Award Sun Fun Lakeland Florida Features 1/4 Scale 90 span 4 cycle 45 2 cycle 40 Plans $1750 ppd Dry Ridge Models 59 McCurry Rd Weaverville NC 28787 New Breed of electronic Sachs/Doimar Lightest weight ready-to-mount engines AU Engines Complete Nothing Extra Buy 34- *38000 42- *42000 lincludga Shipping & Handling Option engines Throttle-coupled spark advance- *5000 Features Customized newest German engines net parts Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition CH Electronics 048 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar Warranty Faulty Parts Workmanship NEW ADAPTER FOR Byrons 4 3 bladed props have prop adapter tft Sachs engine T5 G MFG 857 High Mountain Rd North Haledon NJ 075080201 427464$ 156 Model Aviation RC Electrics/Kopski Continued page 150 As can see newer version has two through-bolt screw heads visible front endbell bolts almost length motor thread rear end-bell thus holding entire case assembly together Removing screws allows easy disassembly motor housingbut sure remove brushes first Loosening bolts little allows brush position rotated slightly respect field magnets turn changes brush angle modifies performance motor Im hoping have some particulars pro cedure future column meantime youre sure what youre doing dont thing works dont fix way newer motor versions have some dimensional changes some parts case assembly such old new arma tures rear end-bells nor interchangeable Keep mind should have order re placement parts Specify version have new current meter has introduced Davey Systems Corporation Malvern PA should available dealers fails can write DSC Wood Lane Malvern PA 19335 meter costs $1995 shown photos has molex connectors mates Astro products version Tamiya connectors also available latter should popular car folks meter has single 30-amp range should cover just about Electrics needs its easy determine much current motor/prop combination drawing battery have connect meter leads between battery motor turn motor An instruction sheet includes necessary information mounting meter box panel can used Another part instruction sheet some what misleading however suggests lowest current draw/highest rpm prop voltage combination will give best all-around performance Well hard understand lowest current highest rpm occurs theres no prop Lets look little closely Motors may thought converters sorts motor converts stored energy battery powered model flight effect accomplished action turning propeller moving air air moved given time energy drained battery time simply means takes current allow motor turn bigger prop no propeller motor draws relatively small amount current battery enough overcome mechanical friction windage within motor assembly prop added air put motion motor doing work power demand battery goes up ie current drain increases So small prop will draw less current large prop about same rpm effect readily observed current meter course cannot just arbitrarily con tinue increase prop size overloading motor and/or battery risking damage subject covered some detail Model Avi ation November 1983 very neat installation Jomar SC-4 speed control shown photos SC-4 supplied requires addition aluminum heat 31 -Blbs2oz-5% HP 34-Bibs Z 02-5 HP TG Laser 200 499 Include Shipping Handling Glass body wheel pants cowl foam wIng aM balsa Included Hsrdws Kite Sadie 31 wIth pubis huluded 42-6 lbs 202-iMP Laser built bones*66986 RON CHIDGEYS TIGER TAIL 4 abailawe 8111 I,, CAJUN Il/C PRODUCTS 112Rosie23 LIflyoft LA 7U 3181 2327448Z 800 sq Basic Kit 5118 FikqI. F. F. C. Ply FOR NEW CATALOG MARRY B MIGLEY INC P o BOX 532 GLENWOOD ILL 60423 POT 0 GOLD RC SHOW SUNDAY FEB 8 87 1000-400 * Outdoor Flying Demonstrations * Swap Tables $5 advance reservations encouraged * Static Aircraft Display Prizes Awarded Popular Vote 300 sink keep power MOSFETS cool ef ficient Local Electric flier Fred Ewing simply cut aluminum size fit crosswise new Astro Viking shown aluminum plate attached two balsa rails side four small sheet metal screws speed control PC board hangs down fuselage installa tion made just inside fully-open cabin front plenty air flows past cooling plate onward through battery pack out fuselage bottom side windows covered clear MonoKote speed control always adds another dimension Electric model flying since power may applied required desired flight behavior instead being just off subject speed controls Id like pass along some comments Joe Utasi Jomar Some speed controls such Jomars SC-3 * Site Concessions offer built-in electronic brake feature designed rapidly stop prop rotation power shut down often used large foldingprop installations aid folding process However seems modelers too often just slam motor stick full full off no coast-down time prop rapid change extreme other causes rotational energy armature gears prop dumped poor little ol brake MOSFET very often simply gives up under such abusively large energy onslaught much less destructive technique slowly reduce applied power move full Off stick position allows some time rotational energy dissipate brake MOSFET will live much longer happier life Please note true general brand speed control electronic brake feature * Raffle & Door Prizes * FREE PARKING Thats another fun month Please forward comment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Heres wishing very happy safe Elec tric New Year RC Pylon Racing/Hager Continued page 54 Quarter Midget Championship Race Results FlierSi Airplane EnginePt Time Gail JacobsonGA Polekitty RY33 11810 Continued page 160 PRODUCTS FOR THE DISCERNING MODiLER Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems UnsufpaSi February 1987 1 57 Swaps Dealers Manufacturers END SaUTHe ADMISSION DONATION S 3 ldMdual S 5 Fasily Gen Chairman Jack Allinger e 219 272-5073 advance table reservations contactDennis Norkus Kensington P1 awaka IN 46544 255-4366 Carry Largest Only Stock Kraft Parts World .. Kraft alive working KRAFT MIDWEST Li FLY WHAT FIX AuthOriZe Wurranty Service _________ KRI7~3 K- LINES 0. nnton . 50 d t 00fl 1t5 ecnJfl fllysf Also Service ACE It/Ctaba Shel Only Full Time Servicenter Midwest 117 East Main St Northvil le Michign 48167 Level] MBSd ZPhone 1-313-348-0085