Control Line Navy Carrier Dick Perry 1988 NATS read minutes August Executive Council meeting No vember 1986 AMA News noticed site 1988 Nats still under investigation Cam Martin reports sites being considered Fentress Naval Aviation Field south Norfolk Virginia no doubt good news modelers southeastern United States Vince Mankowiki Howard Crispin have surveyed site looking potential layouts flying activities plans calls Carrier flown over grass Although some Carrier contests flown over grass use grass because pavement available preparation re quired provide grass flying circle will allow safe landings no cartwheels takes months wont happen Fentress Fentress typical military airfield rather rough grass cut tractor about once month conditions sound bad please join writing AMA requesting Nats plan ners make effort schedule Carrier flying pavement reduce potential damaging models land off deck Three-line control systems Continuing se ries some basics Carrier modeling month Ill discuss setting up three-line control systems commonly used Carrier mod els three-line control systems used vast majority Carrier modelers started out J Roberts systems manufactured Sturdi Built Robert Smurthwaite designed original belicranks handles updated improved few years ago marketed new design under G-S Products logo control units handles now manufactured LR Products 7787 Archdale Ave Detroit MI 48228 can ordered direct local hobby shops cannot supply Rigging controls provide proper neutral elevator adequate control throw engine difficult Add six-inch line length tolerance can little challenging especially someone has experience three-line systems Practices common other CL events dont work well variations ready-made lines such lead-outs proper length use set ready-made lines changing another set could exceed linelength tolerances Putting three equal-length leadouts bellcrank wont allow use three equal-length control lines because line spacing handle easiest solution use lines finish yourself procedure potential problems procedure use developed over years has worked well Start tying throttle lever handle cannot move Out full-aft position Measure finish two elevation lines proper elevator neutral position relative handle An adjustable clevis pushrod line clips different size can correct minor deviations neutral position after elevation lines finished Finish end throttle line connect handle Have friend hold handle apply enough tension lines sag six inches foot touch ground Pull lightly throttle lead-out ensure properly extended pull hard enough move throttle arm spring clothespin against rules allow types control line terminations Author Perry prefersthe meth od shown bottom crimped-tube type loop around sleeve provides additional security over rule book method line guide will hold lead-out conveniently Next put enough tension throttle line sags exactly far elevation lines mark throttle line finish model has movable lead-outs lock forward position during line construction procedure should produce lines proper length allow full throttle movement provide proper neutral elevator position relative handle Because line specially fit should marked allow properly reconnected removed handle Minor adjustments individual line length fine-tune control system can made varying size line clips used line line clips shown photo give indication possibilities four singlepiece commercial clips available Le Roy Cordes 1412 West Hood Chicago IL 60660 well other sources homemade clip interlocking latch hooks quite strong can made length required photo also includes older large Perfect clip Although Perfect now distributing clips single-piece design older slide-latch clips still around old-style Perfect clips strong enough meet strength requirements rules legal Continued page 165 68 Model Aviation Line clips varing sizes must used fine adjustments line length three-line control systems because handles adjustable largest old-style Per fectciip istooweakto meetthe rule require ments Carrier applications convenience throttle lever can Lead-outs subjected considerablespring-loaded forward position wearwhere connect belicrank A1/32-In wire hook arm constructed 1/1 8-in-diameter brasstubearoundthe lead-of 1/16-in wire brass mounting tabs out protects wire produces veryareallthatlsrequiredAspringorrubberband long-lasting control systemprovides necessary force RADIO SOUTH ufum. 43 W Nine Mile Rd Pensacola FL 32514 Radio South Batteries 500 ma Pack 48V975 Futaba conn1250 800 ma Pack 4BV1875 Futaba conn2150 1200 ma Pack 48V1975 Futeba conn2250 TX batt Futaba 0-series orPCM2250 Os OS 25 FP 4250 OS 25 FSR 5750 OS 4OFP 4950 OS 4OFSR 8350 OS 2OFC 8950 OS4OFC 10950 0S61 FC 14350 OS9OFC 17250 Alse Carry ACE Field Charger Chargemaster Dual Charger 12 V Charger Voitmaster Tachmaster 4-20 Kit 4-40 Kit 4-60 Kit 3450 3950 3950 2750 2750 3150 3350 4150 5550 FUTABA FP-2NL5700 FP-2PKA-S289000 FP-4NL-S3810700 FP-4NL-S3312200 FP-6NLK AM16400 FP-6NLK FM18400 FP-SNLP PCM22400 FP-8SGA PCM 47900 FP-8SSA PCM 59900 Boki berg Delia MAC Zin go, K & B Rocket City Dave Brown anal I,NCII mit Orders COD VISA MC ge actual UPS charges OPEN 10-6 EST 904 478-6745 Nohandlingcharges es subject change notice Complete Futaba Repair Center balance rest airplane adding useless weight shorter better estimation recognize heavier tend build longer should Again classic measurement leading edge-to-spinner-backplate useless because two wings tendency will make short again like full-scale biplanes Resist temptation make slightly shorter normal Stunter pretty much takes care planform What else has considered 1 Center Gravity should located conventionally except must consider both wings Based once again average chord both wings determined figuring tall moments plan location 16% 20% flaps slightly forward say 12% 15% no flaps 2 Belicrank location ensure biplane flies straight off lines vertical location bellcrank must closely approxi mate vertical location center gravity Unfortunately means must mounted fuselage between upper lower wings lead-outs must exit fuselage supported guide mounted interwing strut inboard side flight circle An eyeball guess mass involved would strongly suggest bellcrank placed slightly below thrust line suming thrust line located sug gested midway between two wings Its foreand-aft location less critical should closv CG usual reasons lead-outs should conventionally swept about three degrees aft CG sure support inter-wing strut allow usual adjustment range should about wont perfect first time what might wondering will add up competitive Stunter dont think can win Nats Fair question optimize planform wings reduce interference induced drag minimum ratio drag lift will still exceed pure monoplane Stunter addition no way know build two wings light same area As result will take exceptional building skills achieve com petitive wing loadings Still have seen some pretty rudi mentary biplanes complete Stunt pattern knows Perhaps could done have wrong before Go Tom Dixon has announced availability special production run Merco 61 Stunt en gines engines feature dual piston rings excellent compression seal glow plug lo cated rear cylinder ensure smooth ignition engines come Merco Standard Silencer CL venturi Anyone witnessed well Toms 61 ran 86 Nats couldnt help interested having copy himself Full parts backnp service available through Tom other Merco engines information write Tom Dixon Suite 401 1938 Peachtree Road NW Atlanta GA 30309 same vein received notification Doc Passen US representative Cipolla Model Engines actively considering production ofalightweight plain-bearing CL 35 aimed Control Line Stunt info get Bye now Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Navy Carrier/Perry Continued page 68 anything Profile models weigh 28 oz less Line Construction four line terminations shown photo legal commercial crimps have either three two lengths wire through crimped sleeve rule book dia gram crimped-sleeve line construction probably based commercial practice better method recommended Remember FLYLINE MODELS INC P 0 Ba 2136 Farfos Vrrgna 22031 U S •cI April 1987165 A Classic R/C ScaleLAK TH O Wing 15 25 Engines Dealers ributors Weicomed Phone 703 273-9593 IEAST Tony Frackowiaks Challenge IV Kit Hattori Pipes Headers ASANO Laminated wood props RC Acrobatic Specialists PO Box 388914-248-8603 Lincolndale NY 10540 Send $100 catalog Puzzled CALL MATT No time build Melt Ill hove time. ead knew 1 Complete 2 Semi-Assembled reedy cover sandedi ca 9am- 8pm lEST 6093951672 Send prices Kits Engines accessories 9D Mitts Model Building P0 Box 49 1 Stockton Drive Crenhury NJ 06512 Rate cards available free SASE 4-118s 9-1/2 also build Cars Boats Sig lines loops line around outside sleeve before running through sleeve third time method provides additional mechanical lock similar achieved wrapped line termination best method wrapped construction shown photo described AMA rule book fine copper wire lamp cord produces small-diameter line termination neat strong avoids possibil ity damaging line inthe crimping process potential problem smaller lines light coat ing epoxy glue will ensure line wrapping remains secure solder multi-strand lines lead-outs discourage others soldering Although soldering can done safely potential pitfalls Excessive heat can weaken line Solder can flow down cable stiffen CESSNA 150 AEROBAT w ~ Cox Hobbies new E-Z Flyers perfect control line planes first time flyer Equipped famous Cox 049 engine newly designed snap starter get airborne flying fast After winning wings step up racy Cosmic Wind same easy starting Cox 049 engine insures lots exciting flight time See complete line Cox powered models accessorIes Hobby retailer today Enclose $100 SASE mIni-catalog COX HOBBIES 1525 E Warner Ave Santa Ana CA 92705 COSMIC WIND short length causing flexing stress concentrated point solder ends Corrosive flux can travel along interior cable difficult neutralize resulting internal corrosion can difficult detect use eyelets thimbles reduce line wear recommended rules very practical bellerank end lead-out increased wear bellerank can compen sated using significantly larger cable lead-outs butl prefer use hard brass tubing sleeves shown photos 14g-in-diameter brass tube placed around lead-out bent U shape using round-nose pliers drill bit line sleeve place routed through belicrank hole has enlarged 5/ 142 allow free movement line finished using AMA-approved methods rule book Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines perfect converting CH Ignition system new kits plans airplanes just becoming available perfect size engine Pour stroke engines ore beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler 8 develops mare power plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aidridge Doran Hiatt Cliff Bennett Otto Bernhort Maynard Hill used CH system last two world records Available two four stroke engines single twin cyiinder Throttle Coupled Spark Advance kits available popular engines Custom enginesetup available Call write price quote Now IETCl electronic timing control information brochure price list send $100 CH Electronics Inc Box 1732 Riverton WY 82501 Phone 307-857-6897 Please note crimped termination photo constructed according rule book did hurriedly photo didnt recognize error until too late take new photos sleeve crimped place rather two pliers round-nosed lost last move Handle modIfication other photo month shows handle modification made son allow him fly hand Although hands rapidly growing size few years ago hands too small allow him push throttle trigger fully forward using other hand throttle lever disassembled handie used 2-56 screws nuts fasten brass mounting lugs side handle small size mounting screws does interfere movement internal parts control handle operation rubberband pulls throttle lever forward whenever pressure re laxed trigger Coming Attractions Next month Ill continue discussion control systems include throttle linkages engine speed control Keep hook dry Richard L Peny 10035 Deadwood Ave Ellsworth AFB SD 57706 CL Combat/Johnson Continued page 69 ever seen worth little extra per formance Tom Dixon has wonderful catalog listing plans props engines available can reached 1938 Peachtree Road Suite 401 Atlanta GA 30309 Send along large legal-size stamped envelope speed process picture K&B shows blind-mounting nuts engine case style works well newer planes -in motor mounts obviously wont work plane has nacelle Ive seen pit crew struggle dirty melted-down engine should have just changed should keep spare engine pit box ready go means should have prop have needle set properly have bladder attached Its generally quicker pull engine its stuffed dirt has broken part like needle valve assembly its course way has lost crank can have another unofficial event pit crews theyre timed 10 laps engine change minus normal 10 laps model ballpark figure would minute pull engine fill new bladder get engine going Most often thats plenty time get airborne win match Southern California version Bladder Grabber will held April 4-5 1987 Los Angeles triple-elimination event will feature $1000 cash first Carver Corporation stereo second Hoffelt 36R third Tax Man may waiting first-place winner Ron Columbo picked up new Nelson 15 winning Volvo North America-sponsored FM contest held Sterling Heights MI Thanks sponsorship possible give out far prizes contest would have taken entry fees seems trend lately toward bigtime Combat meets either money very valuable prizes Its hoped 166 Model Aviation P39 AIRACOBRA
Edition: Model Aviation - 1987/04
Page Numbers: 68, 165, 166
Control Line Navy Carrier Dick Perry 1988 NATS read minutes August Executive Council meeting No vember 1986 AMA News noticed site 1988 Nats still under investigation Cam Martin reports sites being considered Fentress Naval Aviation Field south Norfolk Virginia no doubt good news modelers southeastern United States Vince Mankowiki Howard Crispin have surveyed site looking potential layouts flying activities plans calls Carrier flown over grass Although some Carrier contests flown over grass use grass because pavement available preparation re quired provide grass flying circle will allow safe landings no cartwheels takes months wont happen Fentress Fentress typical military airfield rather rough grass cut tractor about once month conditions sound bad please join writing AMA requesting Nats plan ners make effort schedule Carrier flying pavement reduce potential damaging models land off deck Three-line control systems Continuing se ries some basics Carrier modeling month Ill discuss setting up three-line control systems commonly used Carrier mod els three-line control systems used vast majority Carrier modelers started out J Roberts systems manufactured Sturdi Built Robert Smurthwaite designed original belicranks handles updated improved few years ago marketed new design under G-S Products logo control units handles now manufactured LR Products 7787 Archdale Ave Detroit MI 48228 can ordered direct local hobby shops cannot supply Rigging controls provide proper neutral elevator adequate control throw engine difficult Add six-inch line length tolerance can little challenging especially someone has experience three-line systems Practices common other CL events dont work well variations ready-made lines such lead-outs proper length use set ready-made lines changing another set could exceed linelength tolerances Putting three equal-length leadouts bellcrank wont allow use three equal-length control lines because line spacing handle easiest solution use lines finish yourself procedure potential problems procedure use developed over years has worked well Start tying throttle lever handle cannot move Out full-aft position Measure finish two elevation lines proper elevator neutral position relative handle An adjustable clevis pushrod line clips different size can correct minor deviations neutral position after elevation lines finished Finish end throttle line connect handle Have friend hold handle apply enough tension lines sag six inches foot touch ground Pull lightly throttle lead-out ensure properly extended pull hard enough move throttle arm spring clothespin against rules allow types control line terminations Author Perry prefersthe meth od shown bottom crimped-tube type loop around sleeve provides additional security over rule book method line guide will hold lead-out conveniently Next put enough tension throttle line sags exactly far elevation lines mark throttle line finish model has movable lead-outs lock forward position during line construction procedure should produce lines proper length allow full throttle movement provide proper neutral elevator position relative handle Because line specially fit should marked allow properly reconnected removed handle Minor adjustments individual line length fine-tune control system can made varying size line clips used line line clips shown photo give indication possibilities four singlepiece commercial clips available Le Roy Cordes 1412 West Hood Chicago IL 60660 well other sources homemade clip interlocking latch hooks quite strong can made length required photo also includes older large Perfect clip Although Perfect now distributing clips single-piece design older slide-latch clips still around old-style Perfect clips strong enough meet strength requirements rules legal Continued page 165 68 Model Aviation Line clips varing sizes must used fine adjustments line length three-line control systems because handles adjustable largest old-style Per fectciip istooweakto meetthe rule require ments Carrier applications convenience throttle lever can Lead-outs subjected considerablespring-loaded forward position wearwhere connect belicrank A1/32-In wire hook arm constructed 1/1 8-in-diameter brasstubearoundthe lead-of 1/16-in wire brass mounting tabs out protects wire produces veryareallthatlsrequiredAspringorrubberband long-lasting control systemprovides necessary force RADIO SOUTH ufum. 43 W Nine Mile Rd Pensacola FL 32514 Radio South Batteries 500 ma Pack 48V975 Futaba conn1250 800 ma Pack 4BV1875 Futaba conn2150 1200 ma Pack 48V1975 Futeba conn2250 TX batt Futaba 0-series orPCM2250 Os OS 25 FP 4250 OS 25 FSR 5750 OS 4OFP 4950 OS 4OFSR 8350 OS 2OFC 8950 OS4OFC 10950 0S61 FC 14350 OS9OFC 17250 Alse Carry ACE Field Charger Chargemaster Dual Charger 12 V Charger Voitmaster Tachmaster 4-20 Kit 4-40 Kit 4-60 Kit 3450 3950 3950 2750 2750 3150 3350 4150 5550 FUTABA FP-2NL5700 FP-2PKA-S289000 FP-4NL-S3810700 FP-4NL-S3312200 FP-6NLK AM16400 FP-6NLK FM18400 FP-SNLP PCM22400 FP-8SGA PCM 47900 FP-8SSA PCM 59900 Boki berg Delia MAC Zin go, K & B Rocket City Dave Brown anal I,NCII mit Orders COD VISA MC ge actual UPS charges OPEN 10-6 EST 904 478-6745 Nohandlingcharges es subject change notice Complete Futaba Repair Center balance rest airplane adding useless weight shorter better estimation recognize heavier tend build longer should Again classic measurement leading edge-to-spinner-backplate useless because two wings tendency will make short again like full-scale biplanes Resist temptation make slightly shorter normal Stunter pretty much takes care planform What else has considered 1 Center Gravity should located conventionally except must consider both wings Based once again average chord both wings determined figuring tall moments plan location 16% 20% flaps slightly forward say 12% 15% no flaps 2 Belicrank location ensure biplane flies straight off lines vertical location bellcrank must closely approxi mate vertical location center gravity Unfortunately means must mounted fuselage between upper lower wings lead-outs must exit fuselage supported guide mounted interwing strut inboard side flight circle An eyeball guess mass involved would strongly suggest bellcrank placed slightly below thrust line suming thrust line located sug gested midway between two wings Its foreand-aft location less critical should closv CG usual reasons lead-outs should conventionally swept about three degrees aft CG sure support inter-wing strut allow usual adjustment range should about wont perfect first time what might wondering will add up competitive Stunter dont think can win Nats Fair question optimize planform wings reduce interference induced drag minimum ratio drag lift will still exceed pure monoplane Stunter addition no way know build two wings light same area As result will take exceptional building skills achieve com petitive wing loadings Still have seen some pretty rudi mentary biplanes complete Stunt pattern knows Perhaps could done have wrong before Go Tom Dixon has announced availability special production run Merco 61 Stunt en gines engines feature dual piston rings excellent compression seal glow plug lo cated rear cylinder ensure smooth ignition engines come Merco Standard Silencer CL venturi Anyone witnessed well Toms 61 ran 86 Nats couldnt help interested having copy himself Full parts backnp service available through Tom other Merco engines information write Tom Dixon Suite 401 1938 Peachtree Road NW Atlanta GA 30309 same vein received notification Doc Passen US representative Cipolla Model Engines actively considering production ofalightweight plain-bearing CL 35 aimed Control Line Stunt info get Bye now Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Navy Carrier/Perry Continued page 68 anything Profile models weigh 28 oz less Line Construction four line terminations shown photo legal commercial crimps have either three two lengths wire through crimped sleeve rule book dia gram crimped-sleeve line construction probably based commercial practice better method recommended Remember FLYLINE MODELS INC P 0 Ba 2136 Farfos Vrrgna 22031 U S •cI April 1987165 A Classic R/C ScaleLAK TH O Wing 15 25 Engines Dealers ributors Weicomed Phone 703 273-9593 IEAST Tony Frackowiaks Challenge IV Kit Hattori Pipes Headers ASANO Laminated wood props RC Acrobatic Specialists PO Box 388914-248-8603 Lincolndale NY 10540 Send $100 catalog Puzzled CALL MATT No time build Melt Ill hove time. ead knew 1 Complete 2 Semi-Assembled reedy cover sandedi ca 9am- 8pm lEST 6093951672 Send prices Kits Engines accessories 9D Mitts Model Building P0 Box 49 1 Stockton Drive Crenhury NJ 06512 Rate cards available free SASE 4-118s 9-1/2 also build Cars Boats Sig lines loops line around outside sleeve before running through sleeve third time method provides additional mechanical lock similar achieved wrapped line termination best method wrapped construction shown photo described AMA rule book fine copper wire lamp cord produces small-diameter line termination neat strong avoids possibil ity damaging line inthe crimping process potential problem smaller lines light coat ing epoxy glue will ensure line wrapping remains secure solder multi-strand lines lead-outs discourage others soldering Although soldering can done safely potential pitfalls Excessive heat can weaken line Solder can flow down cable stiffen CESSNA 150 AEROBAT w ~ Cox Hobbies new E-Z Flyers perfect control line planes first time flyer Equipped famous Cox 049 engine newly designed snap starter get airborne flying fast After winning wings step up racy Cosmic Wind same easy starting Cox 049 engine insures lots exciting flight time See complete line Cox powered models accessorIes Hobby retailer today Enclose $100 SASE mIni-catalog COX HOBBIES 1525 E Warner Ave Santa Ana CA 92705 COSMIC WIND short length causing flexing stress concentrated point solder ends Corrosive flux can travel along interior cable difficult neutralize resulting internal corrosion can difficult detect use eyelets thimbles reduce line wear recommended rules very practical bellerank end lead-out increased wear bellerank can compen sated using significantly larger cable lead-outs butl prefer use hard brass tubing sleeves shown photos 14g-in-diameter brass tube placed around lead-out bent U shape using round-nose pliers drill bit line sleeve place routed through belicrank hole has enlarged 5/ 142 allow free movement line finished using AMA-approved methods rule book Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines perfect converting CH Ignition system new kits plans airplanes just becoming available perfect size engine Pour stroke engines ore beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler 8 develops mare power plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aidridge Doran Hiatt Cliff Bennett Otto Bernhort Maynard Hill used CH system last two world records Available two four stroke engines single twin cyiinder Throttle Coupled Spark Advance kits available popular engines Custom enginesetup available Call write price quote Now IETCl electronic timing control information brochure price list send $100 CH Electronics Inc Box 1732 Riverton WY 82501 Phone 307-857-6897 Please note crimped termination photo constructed according rule book did hurriedly photo didnt recognize error until too late take new photos sleeve crimped place rather two pliers round-nosed lost last move Handle modIfication other photo month shows handle modification made son allow him fly hand Although hands rapidly growing size few years ago hands too small allow him push throttle trigger fully forward using other hand throttle lever disassembled handie used 2-56 screws nuts fasten brass mounting lugs side handle small size mounting screws does interfere movement internal parts control handle operation rubberband pulls throttle lever forward whenever pressure re laxed trigger Coming Attractions Next month Ill continue discussion control systems include throttle linkages engine speed control Keep hook dry Richard L Peny 10035 Deadwood Ave Ellsworth AFB SD 57706 CL Combat/Johnson Continued page 69 ever seen worth little extra per formance Tom Dixon has wonderful catalog listing plans props engines available can reached 1938 Peachtree Road Suite 401 Atlanta GA 30309 Send along large legal-size stamped envelope speed process picture K&B shows blind-mounting nuts engine case style works well newer planes -in motor mounts obviously wont work plane has nacelle Ive seen pit crew struggle dirty melted-down engine should have just changed should keep spare engine pit box ready go means should have prop have needle set properly have bladder attached Its generally quicker pull engine its stuffed dirt has broken part like needle valve assembly its course way has lost crank can have another unofficial event pit crews theyre timed 10 laps engine change minus normal 10 laps model ballpark figure would minute pull engine fill new bladder get engine going Most often thats plenty time get airborne win match Southern California version Bladder Grabber will held April 4-5 1987 Los Angeles triple-elimination event will feature $1000 cash first Carver Corporation stereo second Hoffelt 36R third Tax Man may waiting first-place winner Ron Columbo picked up new Nelson 15 winning Volvo North America-sponsored FM contest held Sterling Heights MI Thanks sponsorship possible give out far prizes contest would have taken entry fees seems trend lately toward bigtime Combat meets either money very valuable prizes Its hoped 166 Model Aviation P39 AIRACOBRA
Edition: Model Aviation - 1987/04
Page Numbers: 68, 165, 166
Control Line Navy Carrier Dick Perry 1988 NATS read minutes August Executive Council meeting No vember 1986 AMA News noticed site 1988 Nats still under investigation Cam Martin reports sites being considered Fentress Naval Aviation Field south Norfolk Virginia no doubt good news modelers southeastern United States Vince Mankowiki Howard Crispin have surveyed site looking potential layouts flying activities plans calls Carrier flown over grass Although some Carrier contests flown over grass use grass because pavement available preparation re quired provide grass flying circle will allow safe landings no cartwheels takes months wont happen Fentress Fentress typical military airfield rather rough grass cut tractor about once month conditions sound bad please join writing AMA requesting Nats plan ners make effort schedule Carrier flying pavement reduce potential damaging models land off deck Three-line control systems Continuing se ries some basics Carrier modeling month Ill discuss setting up three-line control systems commonly used Carrier mod els three-line control systems used vast majority Carrier modelers started out J Roberts systems manufactured Sturdi Built Robert Smurthwaite designed original belicranks handles updated improved few years ago marketed new design under G-S Products logo control units handles now manufactured LR Products 7787 Archdale Ave Detroit MI 48228 can ordered direct local hobby shops cannot supply Rigging controls provide proper neutral elevator adequate control throw engine difficult Add six-inch line length tolerance can little challenging especially someone has experience three-line systems Practices common other CL events dont work well variations ready-made lines such lead-outs proper length use set ready-made lines changing another set could exceed linelength tolerances Putting three equal-length leadouts bellcrank wont allow use three equal-length control lines because line spacing handle easiest solution use lines finish yourself procedure potential problems procedure use developed over years has worked well Start tying throttle lever handle cannot move Out full-aft position Measure finish two elevation lines proper elevator neutral position relative handle An adjustable clevis pushrod line clips different size can correct minor deviations neutral position after elevation lines finished Finish end throttle line connect handle Have friend hold handle apply enough tension lines sag six inches foot touch ground Pull lightly throttle lead-out ensure properly extended pull hard enough move throttle arm spring clothespin against rules allow types control line terminations Author Perry prefersthe meth od shown bottom crimped-tube type loop around sleeve provides additional security over rule book method line guide will hold lead-out conveniently Next put enough tension throttle line sags exactly far elevation lines mark throttle line finish model has movable lead-outs lock forward position during line construction procedure should produce lines proper length allow full throttle movement provide proper neutral elevator position relative handle Because line specially fit should marked allow properly reconnected removed handle Minor adjustments individual line length fine-tune control system can made varying size line clips used line line clips shown photo give indication possibilities four singlepiece commercial clips available Le Roy Cordes 1412 West Hood Chicago IL 60660 well other sources homemade clip interlocking latch hooks quite strong can made length required photo also includes older large Perfect clip Although Perfect now distributing clips single-piece design older slide-latch clips still around old-style Perfect clips strong enough meet strength requirements rules legal Continued page 165 68 Model Aviation Line clips varing sizes must used fine adjustments line length three-line control systems because handles adjustable largest old-style Per fectciip istooweakto meetthe rule require ments Carrier applications convenience throttle lever can Lead-outs subjected considerablespring-loaded forward position wearwhere connect belicrank A1/32-In wire hook arm constructed 1/1 8-in-diameter brasstubearoundthe lead-of 1/16-in wire brass mounting tabs out protects wire produces veryareallthatlsrequiredAspringorrubberband long-lasting control systemprovides necessary force RADIO SOUTH ufum. 43 W Nine Mile Rd Pensacola FL 32514 Radio South Batteries 500 ma Pack 48V975 Futaba conn1250 800 ma Pack 4BV1875 Futaba conn2150 1200 ma Pack 48V1975 Futeba conn2250 TX batt Futaba 0-series orPCM2250 Os OS 25 FP 4250 OS 25 FSR 5750 OS 4OFP 4950 OS 4OFSR 8350 OS 2OFC 8950 OS4OFC 10950 0S61 FC 14350 OS9OFC 17250 Alse Carry ACE Field Charger Chargemaster Dual Charger 12 V Charger Voitmaster Tachmaster 4-20 Kit 4-40 Kit 4-60 Kit 3450 3950 3950 2750 2750 3150 3350 4150 5550 FUTABA FP-2NL5700 FP-2PKA-S289000 FP-4NL-S3810700 FP-4NL-S3312200 FP-6NLK AM16400 FP-6NLK FM18400 FP-SNLP PCM22400 FP-8SGA PCM 47900 FP-8SSA PCM 59900 Boki berg Delia MAC Zin go, K & B Rocket City Dave Brown anal I,NCII mit Orders COD VISA MC ge actual UPS charges OPEN 10-6 EST 904 478-6745 Nohandlingcharges es subject change notice Complete Futaba Repair Center balance rest airplane adding useless weight shorter better estimation recognize heavier tend build longer should Again classic measurement leading edge-to-spinner-backplate useless because two wings tendency will make short again like full-scale biplanes Resist temptation make slightly shorter normal Stunter pretty much takes care planform What else has considered 1 Center Gravity should located conventionally except must consider both wings Based once again average chord both wings determined figuring tall moments plan location 16% 20% flaps slightly forward say 12% 15% no flaps 2 Belicrank location ensure biplane flies straight off lines vertical location bellcrank must closely approxi mate vertical location center gravity Unfortunately means must mounted fuselage between upper lower wings lead-outs must exit fuselage supported guide mounted interwing strut inboard side flight circle An eyeball guess mass involved would strongly suggest bellcrank placed slightly below thrust line suming thrust line located sug gested midway between two wings Its foreand-aft location less critical should closv CG usual reasons lead-outs should conventionally swept about three degrees aft CG sure support inter-wing strut allow usual adjustment range should about wont perfect first time what might wondering will add up competitive Stunter dont think can win Nats Fair question optimize planform wings reduce interference induced drag minimum ratio drag lift will still exceed pure monoplane Stunter addition no way know build two wings light same area As result will take exceptional building skills achieve com petitive wing loadings Still have seen some pretty rudi mentary biplanes complete Stunt pattern knows Perhaps could done have wrong before Go Tom Dixon has announced availability special production run Merco 61 Stunt en gines engines feature dual piston rings excellent compression seal glow plug lo cated rear cylinder ensure smooth ignition engines come Merco Standard Silencer CL venturi Anyone witnessed well Toms 61 ran 86 Nats couldnt help interested having copy himself Full parts backnp service available through Tom other Merco engines information write Tom Dixon Suite 401 1938 Peachtree Road NW Atlanta GA 30309 same vein received notification Doc Passen US representative Cipolla Model Engines actively considering production ofalightweight plain-bearing CL 35 aimed Control Line Stunt info get Bye now Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Navy Carrier/Perry Continued page 68 anything Profile models weigh 28 oz less Line Construction four line terminations shown photo legal commercial crimps have either three two lengths wire through crimped sleeve rule book dia gram crimped-sleeve line construction probably based commercial practice better method recommended Remember FLYLINE MODELS INC P 0 Ba 2136 Farfos Vrrgna 22031 U S •cI April 1987165 A Classic R/C ScaleLAK TH O Wing 15 25 Engines Dealers ributors Weicomed Phone 703 273-9593 IEAST Tony Frackowiaks Challenge IV Kit Hattori Pipes Headers ASANO Laminated wood props RC Acrobatic Specialists PO Box 388914-248-8603 Lincolndale NY 10540 Send $100 catalog Puzzled CALL MATT No time build Melt Ill hove time. ead knew 1 Complete 2 Semi-Assembled reedy cover sandedi ca 9am- 8pm lEST 6093951672 Send prices Kits Engines accessories 9D Mitts Model Building P0 Box 49 1 Stockton Drive Crenhury NJ 06512 Rate cards available free SASE 4-118s 9-1/2 also build Cars Boats Sig lines loops line around outside sleeve before running through sleeve third time method provides additional mechanical lock similar achieved wrapped line termination best method wrapped construction shown photo described AMA rule book fine copper wire lamp cord produces small-diameter line termination neat strong avoids possibil ity damaging line inthe crimping process potential problem smaller lines light coat ing epoxy glue will ensure line wrapping remains secure solder multi-strand lines lead-outs discourage others soldering Although soldering can done safely potential pitfalls Excessive heat can weaken line Solder can flow down cable stiffen CESSNA 150 AEROBAT w ~ Cox Hobbies new E-Z Flyers perfect control line planes first time flyer Equipped famous Cox 049 engine newly designed snap starter get airborne flying fast After winning wings step up racy Cosmic Wind same easy starting Cox 049 engine insures lots exciting flight time See complete line Cox powered models accessorIes Hobby retailer today Enclose $100 SASE mIni-catalog COX HOBBIES 1525 E Warner Ave Santa Ana CA 92705 COSMIC WIND short length causing flexing stress concentrated point solder ends Corrosive flux can travel along interior cable difficult neutralize resulting internal corrosion can difficult detect use eyelets thimbles reduce line wear recommended rules very practical bellerank end lead-out increased wear bellerank can compen sated using significantly larger cable lead-outs butl prefer use hard brass tubing sleeves shown photos 14g-in-diameter brass tube placed around lead-out bent U shape using round-nose pliers drill bit line sleeve place routed through belicrank hole has enlarged 5/ 142 allow free movement line finished using AMA-approved methods rule book Capacitive Discharge Ignition CH Electronics Breakerless CD Ignition System can installed engine 15 large chainsaw type new 90 15 two four stroke engines perfect converting CH Ignition system new kits plans airplanes just becoming available perfect size engine Pour stroke engines ore beautiful ign Detonation death four stroke enginewhen control engine timing can stop detonation makes engine run much cooler 8 develops mare power plus no kickback & very low idle CH system used engine expertsMaynard Hill George Aidridge Doran Hiatt Cliff Bennett Otto Bernhort Maynard Hill used CH system last two world records Available two four stroke engines single twin cyiinder Throttle Coupled Spark Advance kits available popular engines Custom enginesetup available Call write price quote Now IETCl electronic timing control information brochure price list send $100 CH Electronics Inc Box 1732 Riverton WY 82501 Phone 307-857-6897 Please note crimped termination photo constructed according rule book did hurriedly photo didnt recognize error until too late take new photos sleeve crimped place rather two pliers round-nosed lost last move Handle modIfication other photo month shows handle modification made son allow him fly hand Although hands rapidly growing size few years ago hands too small allow him push throttle trigger fully forward using other hand throttle lever disassembled handie used 2-56 screws nuts fasten brass mounting lugs side handle small size mounting screws does interfere movement internal parts control handle operation rubberband pulls throttle lever forward whenever pressure re laxed trigger Coming Attractions Next month Ill continue discussion control systems include throttle linkages engine speed control Keep hook dry Richard L Peny 10035 Deadwood Ave Ellsworth AFB SD 57706 CL Combat/Johnson Continued page 69 ever seen worth little extra per formance Tom Dixon has wonderful catalog listing plans props engines available can reached 1938 Peachtree Road Suite 401 Atlanta GA 30309 Send along large legal-size stamped envelope speed process picture K&B shows blind-mounting nuts engine case style works well newer planes -in motor mounts obviously wont work plane has nacelle Ive seen pit crew struggle dirty melted-down engine should have just changed should keep spare engine pit box ready go means should have prop have needle set properly have bladder attached Its generally quicker pull engine its stuffed dirt has broken part like needle valve assembly its course way has lost crank can have another unofficial event pit crews theyre timed 10 laps engine change minus normal 10 laps model ballpark figure would minute pull engine fill new bladder get engine going Most often thats plenty time get airborne win match Southern California version Bladder Grabber will held April 4-5 1987 Los Angeles triple-elimination event will feature $1000 cash first Carver Corporation stereo second Hoffelt 36R third Tax Man may waiting first-place winner Ron Columbo picked up new Nelson 15 winning Volvo North America-sponsored FM contest held Sterling Heights MI Thanks sponsorship possible give out far prizes contest would have taken entry fees seems trend lately toward bigtime Combat meets either money very valuable prizes Its hoped 166 Model Aviation P39 AIRACOBRA