Radio Control SPORT AEROBA TICS Ron Van Putte ANNIVERSARY TIME Another column marks beginning ninth year colum nist Model Aviation have magazine since first issue came out 1975 early days magazine about 80 pages parts color covers truth Model Aviation couldnt begin com pare couple other model magazines back Old pro Bill Winter editor knew know about putting out quality magazinebut us leam talking Associate Editor Ross Mc Mullen other day told him delighted reader job people front office like Publisher/Editor Carl Wheeley Art Director Herb Silbermann Edi tors note Lets forget Andrea Peterson Johnnie Shipley done tuming Model Avi ation quality magazine Im proud Model Aviation feel same way let talented hard-workers editorial office hear about Periodically make requests good pictures often mention need good pictures con testants local contests usually tell column provided purposewere Glenn faimess should promptly corrected am thought received pictures Carters views characterize sure would wish pictures needed wanted Nothing group denigrating another therefore quite mac- Hes right course As old story goes could farther truth pictures curate journalistically matter what Van Putte meant write What could magazine send other columnists subject Turnaround Pattern has received lot attention recently April issue Model Aviation Soapbox letter Chuck Mills took exception Glenn Carters December 1982 Soapbox letter March issue also comments relative same Carter letter short after column published received letter Floyd Law rence Secretary/Treasurer IMAC International Miniature Acrobatic Club Floyd said part true until about year ago Glenn Carter Secretary/Treasurer IMAC andif anyonecould speak group such no longer case have replaced Glenn Secretary/Treasurer now have active involved Board Directors role propose policy membership concurrence Glenn Carter continues highly re spected member IMAC serving both District 10 Director member IMACs Rules Judging Committee views expressed Soapbox letteras am sure Glenn would tell virtually such letters 48 Model Aviation Lt toi treti Art ourque ayes miume airplanes rims u,ss n,s are its size World Expert transmitter Jack 6 trom tiiea IIODDICS KIT mogitieg Tar DOil-Ori wings i ne uesugn rias exceptIonally deep fuselage airplane its size Art Bourques pride joya FOKker Triplane tie auiii aaoui u years ago rree Flightonly recently converted use Ace AC pulse radio Glenn Carter wrote own opinion official view IMAC What meant take exception member group den igrating another group kind action creates anger resentment certainly does nobody good February column described bond lightweight fiberglass cloth wing skins prior attaching wing skin foam wing Several people have written ask additional information consensus problem seems epoxy brushed through glass cloth balsa skin cloth tries move around Well does have hold cloth down epoxy brushed found two tricks work alleviate prob lem First cloth should smoothed out wing skin much possible hold edge cloth down brush epoxy progres sively along across wing skin Second epoxy thinned slightly rubbing alcohol easier brush through glass cloth balsa skin have careful thin epoxy too much Thinning epoxy makes easier brush too much thinning causes two bad effects first amount epoxy sticking cloth balsa skin reduced cloth has tendency pop loose second alcohol expands balsa causes waviness skin combined reduced stickiness epoxy causes wrinkles glass cloth next impossible stick down later am well-experienced problem because added too much alcohol epoxy last wing resulting wrinkles caused about twice much work preparing wing skin would have wrinkles call John Kenney owns Square Loop Hobby Center Greenwood MS wanted tell hed sold lot Dave Brown epoxy after February column ap peared also passed technique applying epoxy easier using brush pours mixed epoxy shallow Tefloncoated tray rolls slightly-modified plastic sponge hair rollers large pink ones epoxy onto wing skin sponge tends expand somewhat cuts about half inch off length roller before using claims rollers much better brush cause glass cloth doesnt tend move around wing skin Sounds great wife will have buy rollers meId feel obligated ex plain sales clerk buying would probably cause con fusion John also told about filled epoxy claims works well Sears filled epoxy Continued page 140 June 1983 49 Mike Bells pit crew may little young now hell grow job Mikes airplane venerable designan Art Schroeder Eyeball Offered Two Sizes Kborits nu Plan Drawings S Partial Kits Quarter Scale Kioritz type Engine 94 Span Oaarter Scale Plan Set $3000 6 Sheets Opposite Wing View $1200 2 Sheets 2 Scale Plan Set $150012 Sheetsl Opposite Wino View add $77h 2 Scale 60 Engtnes 63 Span 980 Sq 50 tar Fiesigns needKits ot noar bailding Dealer inquiries invited connecting rods made bent materials available designed give long service eliminate rod breakage modern highPerfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Or. San Jose CA 9512914081257-7059 Capacitors CI C2 C3 C6AVX 047 uf 50-volt CK7 tempco C4 C5AVX 001 uf 50-volt MOSFETs Siemens BUZ 10 equivalent 60-volt 20-amp Rds m finished speed control including MOSFETs available $49 An sembled board less MOSFETs available $29 Bare printed circuit board etched drilled solder reflowed $750 Con tact Jomar Products 2028 Knightsbridge Dr Cincinnati OH 45244 Congratulate/Kinning Continued page 47 until sky thins out number planes feel comfortable fly heavy air traffic remain control yourself well airplane dont get angry al have midair dont say illmannered things other fliers lousy flier doesnt have fun certainly tries does loops snap rolls around through trafficand pulls up sharply narrowly averts head-on because hes flying against pattern Sometimes nar rowly misses tail section someones pride joy seems could care less because hes having ball Worst gets angry verbally loses temper people cant about crowded situation can Landing times comes finish flight ready have looked see field clear have sig nalled let other fliers know intentions announcing loud voice Landing have looked see air space clear no other airplanes will interfere set up final approach cut throttle slow airplane grease another right front contrast poor flier will best overtake final approachor hell make tight circle landing pattern impeding traffic behind him sweep down fast-idle hard landing half way down field flier must watch him closely doesnt believe verbal signals has problem Nu advance planning mind wondering whats lunch whether buddies watching wild maneuvers Congratulations ordinary flying might say basic stuff instructor taught before soloed Theres nothing very remarkable about Besides bad-flier cases cited hypothetical could never happen real world RC Perhaps youre right Arent glad nobody flies like bad flier club bottom line next time youre flying field someone does something annoy congratulate self being better average enjoy able hobby both complex de manding fully realize irresponsible behavior reckless flying can tolerated Safety factor everyone connected model aviation concerned mustnt rest pat yourself back certainly flying keep both hands transmitter Continue think about what doing time start engine Get completely absorbed task flying airplane Plan moves execute smoothly noth ing surprise around have experience get through flight hand experience con siderable asset Congratulate yourself Youve earned RC Aerobatics/Van Putte Continued page 49 called Deveon White Two Ton Epoxy Un fortunately does seem available through normal hobby distributors least ones does business Hes sending sample try out works well claims Ill try find Out purchase put information column Right now Im working new 40-size powered Supertigre 60 sport airplane started about 12 years ago fiber glass fuselage purchased Royal Products about 1970 ought well cured now 140 Model Aviation D EE High perform engine connoc /%%1731 NW 45 Street Ft Lauderdale FL 33309 1395l 491-6115 ENGINEERING THE LANUING GEAR PEOPLE 1irsd hil landing gears dsnl lii year biggie prtperly II & II Enginoenig can seine four prsbleins * Cuattot haul four needs & specs gooratleelt Ia lit * Slrnog & durable Ia withstand toughest landing * 9 & 0 Engineering gear will warh & keep biggie hf log * In stack replaceniott lear 1st papolar models Byrun PitIs Christen EaIe CAP 21 Balsa USA J3 CUB Air Tech Powace Eagle lIsten Big Stick Champ Citulmna B & models Snapper Stinger Stopper Tat FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve ifs easy starting reliability list Line 15011 646-1656 Fox MFG Co 5305 TDWSON AVE FORT SMITH ARK 72901 AlTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA SIO MORGAN BALSA USA PIATT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER P171S iS & SCALE SUPER CUB POKKER 0-7 BOEING P- 12 P-26 F4B2 P4B4 SPARROW HAWK GEE BEE MOO r MACBRIENS TuRBULENT cHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J3-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANS t35 SCALE t/4 SCALE DECATHALON PIPER PAtB ft OTHERS WHEEL PANTS FOR CITABRIA STAROUSTER II PIUS SKYBOLT LINER TI SPORT CHRISTEN EAGLE PB E HAWK STEARMAN STINSON SR-S MULLIGAN ft OTHERS BRAZED & HEAT-TREATED WIRE GEARS& CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers fiberglass parts plansWrite call us T Et D FIBERGLASS SPECIALTIES 30925 eLOCK GARDEN CITY Ml 40136 PHONE 313 421-6358 made now defunct think company called Plantation Models foam wing cut 10 years ago wife travelled Maryland Florida survived two moves down club members gave incentive finish observed almost slow builder Anyway after covering wing last weekend proceeded mount fixed gear binge ailerons Would believe Id almost gotten mount fixed landing gears years building retractable-landinggear airplanes caused forget some tech niques installing fixed gears came back quickly enough once got started though thought might useful present way setting up fixed gear installation start mounting engine fuselage putting correct-size prop block model up fiat surface using old shoe boxes books until airplane level prop clears floor table about inch measure distance bottom wing gear location floor nose gear plugs fuselage floor After subtracting half diameter respective wheels final bend points main gears nose gear can marked gear wires Goldberg adjustable axles being used easier bending gear wires Just clamp axles gear wires marked Dont forget file gear wire set screw axle will spin around slide up wire Some people solder adjustable axle gear wire after installation has checked Whichever technique used airplane should sit level doesnt either takeoff landing problems will result nose-high attitude will make bouncy landings because wing zant dump lift after touchdown decreasing its sngle attack nose-low attitude trouble lao because wing may actually develop nega live lift runway during takeoff run tnd make difficult rotate airplane akeoff Neither situation desirable fliers save lot trouble taking time woperly set up landing gears Ron Van Putie Ill Sleepy Oaks Rd Ft Wa/ Beach FL 32548 C Scale/Wiscer ontinued page 51 lenient weight white glue between balsa snd plywood pressure needs applied br hour have made good joints 20 ninutes temperature can raised lacing assembly warm spot may e wet glue outside joint intemally ure quite complete doubt about time equired make test sample Balsa will tear away ut glue joint remains intact Such tests ften performed full-scale construction vooden airplanes prove techniques Dons use nodel cement laminating needs air Iry Combinations materials help keep cate airplanes intact among worth vhite individualistic tricks building re ertoire arts foam insulation Wing cores made om foam plastic common other model Irts can also built up fiberglass cloth er foam core odd shapes ost likely candidates type construction ogine cowls wheel pants broad struts nacelles id fairings have made fiberglass over Continued page 144 4-40 STEEL KWIK-LINKS #9 4-413 links con structed top quality spring steel Control linkage hook-ups Cat No 304 2 $100 DU-BRO 4-40 KWIK-LINKS I12 rod iflClUdd / Cat No 306$ 75 sa NICKEL PLATED SOLDER LINKS new 4-40 solder links nickel plated easy soldering Cat No 3052 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY e HINGES Easy install precisionStrong smooth andBuilt heavy load DIJBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free lockedthe small the1/4 scale applications checked forheavy duty hingesThey use removable000 smoothness theIX cc factoryAll have sixtIIkj3/64 dia cotter pin holes each000 formax- um holding Ktz000 000 Cat No 1186 per pkg $106Cat No 116 6 per pkg $110Cat No 257 Cat No ii9 15 per pkg $195Cat No 117 15 per pltg $24915 per pkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED OURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 43 7/32 1413116 QQ139 1/9 138 3/32 137 1116 [ Heavy duty $1 00-2 per set f----$ 80 per set sets gf 4 HEAVY DUTY 4-40 BALL LINK Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse lage minutes drill 3/1 6 hole Cat No 203$175 4SF 0g DUBRO SNAP-ON BALL LINKS Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight y Excellent offset steering servo throttle hook-ups Bolt $85 Threaded $85 Cat No 180 Cat No 181 Cat No 182 DUO BRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 June 1983 141 Top Quality Name Can Depend NEW________
Edition: Model Aviation - 1983/06
Page Numbers: 48, 49, 140, 141
Radio Control SPORT AEROBA TICS Ron Van Putte ANNIVERSARY TIME Another column marks beginning ninth year colum nist Model Aviation have magazine since first issue came out 1975 early days magazine about 80 pages parts color covers truth Model Aviation couldnt begin com pare couple other model magazines back Old pro Bill Winter editor knew know about putting out quality magazinebut us leam talking Associate Editor Ross Mc Mullen other day told him delighted reader job people front office like Publisher/Editor Carl Wheeley Art Director Herb Silbermann Edi tors note Lets forget Andrea Peterson Johnnie Shipley done tuming Model Avi ation quality magazine Im proud Model Aviation feel same way let talented hard-workers editorial office hear about Periodically make requests good pictures often mention need good pictures con testants local contests usually tell column provided purposewere Glenn faimess should promptly corrected am thought received pictures Carters views characterize sure would wish pictures needed wanted Nothing group denigrating another therefore quite mac- Hes right course As old story goes could farther truth pictures curate journalistically matter what Van Putte meant write What could magazine send other columnists subject Turnaround Pattern has received lot attention recently April issue Model Aviation Soapbox letter Chuck Mills took exception Glenn Carters December 1982 Soapbox letter March issue also comments relative same Carter letter short after column published received letter Floyd Law rence Secretary/Treasurer IMAC International Miniature Acrobatic Club Floyd said part true until about year ago Glenn Carter Secretary/Treasurer IMAC andif anyonecould speak group such no longer case have replaced Glenn Secretary/Treasurer now have active involved Board Directors role propose policy membership concurrence Glenn Carter continues highly re spected member IMAC serving both District 10 Director member IMACs Rules Judging Committee views expressed Soapbox letteras am sure Glenn would tell virtually such letters 48 Model Aviation Lt toi treti Art ourque ayes miume airplanes rims u,ss n,s are its size World Expert transmitter Jack 6 trom tiiea IIODDICS KIT mogitieg Tar DOil-Ori wings i ne uesugn rias exceptIonally deep fuselage airplane its size Art Bourques pride joya FOKker Triplane tie auiii aaoui u years ago rree Flightonly recently converted use Ace AC pulse radio Glenn Carter wrote own opinion official view IMAC What meant take exception member group den igrating another group kind action creates anger resentment certainly does nobody good February column described bond lightweight fiberglass cloth wing skins prior attaching wing skin foam wing Several people have written ask additional information consensus problem seems epoxy brushed through glass cloth balsa skin cloth tries move around Well does have hold cloth down epoxy brushed found two tricks work alleviate prob lem First cloth should smoothed out wing skin much possible hold edge cloth down brush epoxy progres sively along across wing skin Second epoxy thinned slightly rubbing alcohol easier brush through glass cloth balsa skin have careful thin epoxy too much Thinning epoxy makes easier brush too much thinning causes two bad effects first amount epoxy sticking cloth balsa skin reduced cloth has tendency pop loose second alcohol expands balsa causes waviness skin combined reduced stickiness epoxy causes wrinkles glass cloth next impossible stick down later am well-experienced problem because added too much alcohol epoxy last wing resulting wrinkles caused about twice much work preparing wing skin would have wrinkles call John Kenney owns Square Loop Hobby Center Greenwood MS wanted tell hed sold lot Dave Brown epoxy after February column ap peared also passed technique applying epoxy easier using brush pours mixed epoxy shallow Tefloncoated tray rolls slightly-modified plastic sponge hair rollers large pink ones epoxy onto wing skin sponge tends expand somewhat cuts about half inch off length roller before using claims rollers much better brush cause glass cloth doesnt tend move around wing skin Sounds great wife will have buy rollers meId feel obligated ex plain sales clerk buying would probably cause con fusion John also told about filled epoxy claims works well Sears filled epoxy Continued page 140 June 1983 49 Mike Bells pit crew may little young now hell grow job Mikes airplane venerable designan Art Schroeder Eyeball Offered Two Sizes Kborits nu Plan Drawings S Partial Kits Quarter Scale Kioritz type Engine 94 Span Oaarter Scale Plan Set $3000 6 Sheets Opposite Wing View $1200 2 Sheets 2 Scale Plan Set $150012 Sheetsl Opposite Wino View add $77h 2 Scale 60 Engtnes 63 Span 980 Sq 50 tar Fiesigns needKits ot noar bailding Dealer inquiries invited connecting rods made bent materials available designed give long service eliminate rod breakage modern highPerfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Or. San Jose CA 9512914081257-7059 Capacitors CI C2 C3 C6AVX 047 uf 50-volt CK7 tempco C4 C5AVX 001 uf 50-volt MOSFETs Siemens BUZ 10 equivalent 60-volt 20-amp Rds m finished speed control including MOSFETs available $49 An sembled board less MOSFETs available $29 Bare printed circuit board etched drilled solder reflowed $750 Con tact Jomar Products 2028 Knightsbridge Dr Cincinnati OH 45244 Congratulate/Kinning Continued page 47 until sky thins out number planes feel comfortable fly heavy air traffic remain control yourself well airplane dont get angry al have midair dont say illmannered things other fliers lousy flier doesnt have fun certainly tries does loops snap rolls around through trafficand pulls up sharply narrowly averts head-on because hes flying against pattern Sometimes nar rowly misses tail section someones pride joy seems could care less because hes having ball Worst gets angry verbally loses temper people cant about crowded situation can Landing times comes finish flight ready have looked see field clear have sig nalled let other fliers know intentions announcing loud voice Landing have looked see air space clear no other airplanes will interfere set up final approach cut throttle slow airplane grease another right front contrast poor flier will best overtake final approachor hell make tight circle landing pattern impeding traffic behind him sweep down fast-idle hard landing half way down field flier must watch him closely doesnt believe verbal signals has problem Nu advance planning mind wondering whats lunch whether buddies watching wild maneuvers Congratulations ordinary flying might say basic stuff instructor taught before soloed Theres nothing very remarkable about Besides bad-flier cases cited hypothetical could never happen real world RC Perhaps youre right Arent glad nobody flies like bad flier club bottom line next time youre flying field someone does something annoy congratulate self being better average enjoy able hobby both complex de manding fully realize irresponsible behavior reckless flying can tolerated Safety factor everyone connected model aviation concerned mustnt rest pat yourself back certainly flying keep both hands transmitter Continue think about what doing time start engine Get completely absorbed task flying airplane Plan moves execute smoothly noth ing surprise around have experience get through flight hand experience con siderable asset Congratulate yourself Youve earned RC Aerobatics/Van Putte Continued page 49 called Deveon White Two Ton Epoxy Un fortunately does seem available through normal hobby distributors least ones does business Hes sending sample try out works well claims Ill try find Out purchase put information column Right now Im working new 40-size powered Supertigre 60 sport airplane started about 12 years ago fiber glass fuselage purchased Royal Products about 1970 ought well cured now 140 Model Aviation D EE High perform engine connoc /%%1731 NW 45 Street Ft Lauderdale FL 33309 1395l 491-6115 ENGINEERING THE LANUING GEAR PEOPLE 1irsd hil landing gears dsnl lii year biggie prtperly II & II Enginoenig can seine four prsbleins * Cuattot haul four needs & specs gooratleelt Ia lit * Slrnog & durable Ia withstand toughest landing * 9 & 0 Engineering gear will warh & keep biggie hf log * In stack replaceniott lear 1st papolar models Byrun PitIs Christen EaIe CAP 21 Balsa USA J3 CUB Air Tech Powace Eagle lIsten Big Stick Champ Citulmna B & models Snapper Stinger Stopper Tat FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve ifs easy starting reliability list Line 15011 646-1656 Fox MFG Co 5305 TDWSON AVE FORT SMITH ARK 72901 AlTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA SIO MORGAN BALSA USA PIATT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER P171S iS & SCALE SUPER CUB POKKER 0-7 BOEING P- 12 P-26 F4B2 P4B4 SPARROW HAWK GEE BEE MOO r MACBRIENS TuRBULENT cHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J3-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANS t35 SCALE t/4 SCALE DECATHALON PIPER PAtB ft OTHERS WHEEL PANTS FOR CITABRIA STAROUSTER II PIUS SKYBOLT LINER TI SPORT CHRISTEN EAGLE PB E HAWK STEARMAN STINSON SR-S MULLIGAN ft OTHERS BRAZED & HEAT-TREATED WIRE GEARS& CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers fiberglass parts plansWrite call us T Et D FIBERGLASS SPECIALTIES 30925 eLOCK GARDEN CITY Ml 40136 PHONE 313 421-6358 made now defunct think company called Plantation Models foam wing cut 10 years ago wife travelled Maryland Florida survived two moves down club members gave incentive finish observed almost slow builder Anyway after covering wing last weekend proceeded mount fixed gear binge ailerons Would believe Id almost gotten mount fixed landing gears years building retractable-landinggear airplanes caused forget some tech niques installing fixed gears came back quickly enough once got started though thought might useful present way setting up fixed gear installation start mounting engine fuselage putting correct-size prop block model up fiat surface using old shoe boxes books until airplane level prop clears floor table about inch measure distance bottom wing gear location floor nose gear plugs fuselage floor After subtracting half diameter respective wheels final bend points main gears nose gear can marked gear wires Goldberg adjustable axles being used easier bending gear wires Just clamp axles gear wires marked Dont forget file gear wire set screw axle will spin around slide up wire Some people solder adjustable axle gear wire after installation has checked Whichever technique used airplane should sit level doesnt either takeoff landing problems will result nose-high attitude will make bouncy landings because wing zant dump lift after touchdown decreasing its sngle attack nose-low attitude trouble lao because wing may actually develop nega live lift runway during takeoff run tnd make difficult rotate airplane akeoff Neither situation desirable fliers save lot trouble taking time woperly set up landing gears Ron Van Putie Ill Sleepy Oaks Rd Ft Wa/ Beach FL 32548 C Scale/Wiscer ontinued page 51 lenient weight white glue between balsa snd plywood pressure needs applied br hour have made good joints 20 ninutes temperature can raised lacing assembly warm spot may e wet glue outside joint intemally ure quite complete doubt about time equired make test sample Balsa will tear away ut glue joint remains intact Such tests ften performed full-scale construction vooden airplanes prove techniques Dons use nodel cement laminating needs air Iry Combinations materials help keep cate airplanes intact among worth vhite individualistic tricks building re ertoire arts foam insulation Wing cores made om foam plastic common other model Irts can also built up fiberglass cloth er foam core odd shapes ost likely candidates type construction ogine cowls wheel pants broad struts nacelles id fairings have made fiberglass over Continued page 144 4-40 STEEL KWIK-LINKS #9 4-413 links con structed top quality spring steel Control linkage hook-ups Cat No 304 2 $100 DU-BRO 4-40 KWIK-LINKS I12 rod iflClUdd / Cat No 306$ 75 sa NICKEL PLATED SOLDER LINKS new 4-40 solder links nickel plated easy soldering Cat No 3052 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY e HINGES Easy install precisionStrong smooth andBuilt heavy load DIJBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free lockedthe small the1/4 scale applications checked forheavy duty hingesThey use removable000 smoothness theIX cc factoryAll have sixtIIkj3/64 dia cotter pin holes each000 formax- um holding Ktz000 000 Cat No 1186 per pkg $106Cat No 116 6 per pkg $110Cat No 257 Cat No ii9 15 per pkg $195Cat No 117 15 per pltg $24915 per pkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED OURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 43 7/32 1413116 QQ139 1/9 138 3/32 137 1116 [ Heavy duty $1 00-2 per set f----$ 80 per set sets gf 4 HEAVY DUTY 4-40 BALL LINK Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse lage minutes drill 3/1 6 hole Cat No 203$175 4SF 0g DUBRO SNAP-ON BALL LINKS Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight y Excellent offset steering servo throttle hook-ups Bolt $85 Threaded $85 Cat No 180 Cat No 181 Cat No 182 DUO BRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 June 1983 141 Top Quality Name Can Depend NEW________
Edition: Model Aviation - 1983/06
Page Numbers: 48, 49, 140, 141
Radio Control SPORT AEROBA TICS Ron Van Putte ANNIVERSARY TIME Another column marks beginning ninth year colum nist Model Aviation have magazine since first issue came out 1975 early days magazine about 80 pages parts color covers truth Model Aviation couldnt begin com pare couple other model magazines back Old pro Bill Winter editor knew know about putting out quality magazinebut us leam talking Associate Editor Ross Mc Mullen other day told him delighted reader job people front office like Publisher/Editor Carl Wheeley Art Director Herb Silbermann Edi tors note Lets forget Andrea Peterson Johnnie Shipley done tuming Model Avi ation quality magazine Im proud Model Aviation feel same way let talented hard-workers editorial office hear about Periodically make requests good pictures often mention need good pictures con testants local contests usually tell column provided purposewere Glenn faimess should promptly corrected am thought received pictures Carters views characterize sure would wish pictures needed wanted Nothing group denigrating another therefore quite mac- Hes right course As old story goes could farther truth pictures curate journalistically matter what Van Putte meant write What could magazine send other columnists subject Turnaround Pattern has received lot attention recently April issue Model Aviation Soapbox letter Chuck Mills took exception Glenn Carters December 1982 Soapbox letter March issue also comments relative same Carter letter short after column published received letter Floyd Law rence Secretary/Treasurer IMAC International Miniature Acrobatic Club Floyd said part true until about year ago Glenn Carter Secretary/Treasurer IMAC andif anyonecould speak group such no longer case have replaced Glenn Secretary/Treasurer now have active involved Board Directors role propose policy membership concurrence Glenn Carter continues highly re spected member IMAC serving both District 10 Director member IMACs Rules Judging Committee views expressed Soapbox letteras am sure Glenn would tell virtually such letters 48 Model Aviation Lt toi treti Art ourque ayes miume airplanes rims u,ss n,s are its size World Expert transmitter Jack 6 trom tiiea IIODDICS KIT mogitieg Tar DOil-Ori wings i ne uesugn rias exceptIonally deep fuselage airplane its size Art Bourques pride joya FOKker Triplane tie auiii aaoui u years ago rree Flightonly recently converted use Ace AC pulse radio Glenn Carter wrote own opinion official view IMAC What meant take exception member group den igrating another group kind action creates anger resentment certainly does nobody good February column described bond lightweight fiberglass cloth wing skins prior attaching wing skin foam wing Several people have written ask additional information consensus problem seems epoxy brushed through glass cloth balsa skin cloth tries move around Well does have hold cloth down epoxy brushed found two tricks work alleviate prob lem First cloth should smoothed out wing skin much possible hold edge cloth down brush epoxy progres sively along across wing skin Second epoxy thinned slightly rubbing alcohol easier brush through glass cloth balsa skin have careful thin epoxy too much Thinning epoxy makes easier brush too much thinning causes two bad effects first amount epoxy sticking cloth balsa skin reduced cloth has tendency pop loose second alcohol expands balsa causes waviness skin combined reduced stickiness epoxy causes wrinkles glass cloth next impossible stick down later am well-experienced problem because added too much alcohol epoxy last wing resulting wrinkles caused about twice much work preparing wing skin would have wrinkles call John Kenney owns Square Loop Hobby Center Greenwood MS wanted tell hed sold lot Dave Brown epoxy after February column ap peared also passed technique applying epoxy easier using brush pours mixed epoxy shallow Tefloncoated tray rolls slightly-modified plastic sponge hair rollers large pink ones epoxy onto wing skin sponge tends expand somewhat cuts about half inch off length roller before using claims rollers much better brush cause glass cloth doesnt tend move around wing skin Sounds great wife will have buy rollers meId feel obligated ex plain sales clerk buying would probably cause con fusion John also told about filled epoxy claims works well Sears filled epoxy Continued page 140 June 1983 49 Mike Bells pit crew may little young now hell grow job Mikes airplane venerable designan Art Schroeder Eyeball Offered Two Sizes Kborits nu Plan Drawings S Partial Kits Quarter Scale Kioritz type Engine 94 Span Oaarter Scale Plan Set $3000 6 Sheets Opposite Wing View $1200 2 Sheets 2 Scale Plan Set $150012 Sheetsl Opposite Wino View add $77h 2 Scale 60 Engtnes 63 Span 980 Sq 50 tar Fiesigns needKits ot noar bailding Dealer inquiries invited connecting rods made bent materials available designed give long service eliminate rod breakage modern highPerfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Or. San Jose CA 9512914081257-7059 Capacitors CI C2 C3 C6AVX 047 uf 50-volt CK7 tempco C4 C5AVX 001 uf 50-volt MOSFETs Siemens BUZ 10 equivalent 60-volt 20-amp Rds m finished speed control including MOSFETs available $49 An sembled board less MOSFETs available $29 Bare printed circuit board etched drilled solder reflowed $750 Con tact Jomar Products 2028 Knightsbridge Dr Cincinnati OH 45244 Congratulate/Kinning Continued page 47 until sky thins out number planes feel comfortable fly heavy air traffic remain control yourself well airplane dont get angry al have midair dont say illmannered things other fliers lousy flier doesnt have fun certainly tries does loops snap rolls around through trafficand pulls up sharply narrowly averts head-on because hes flying against pattern Sometimes nar rowly misses tail section someones pride joy seems could care less because hes having ball Worst gets angry verbally loses temper people cant about crowded situation can Landing times comes finish flight ready have looked see field clear have sig nalled let other fliers know intentions announcing loud voice Landing have looked see air space clear no other airplanes will interfere set up final approach cut throttle slow airplane grease another right front contrast poor flier will best overtake final approachor hell make tight circle landing pattern impeding traffic behind him sweep down fast-idle hard landing half way down field flier must watch him closely doesnt believe verbal signals has problem Nu advance planning mind wondering whats lunch whether buddies watching wild maneuvers Congratulations ordinary flying might say basic stuff instructor taught before soloed Theres nothing very remarkable about Besides bad-flier cases cited hypothetical could never happen real world RC Perhaps youre right Arent glad nobody flies like bad flier club bottom line next time youre flying field someone does something annoy congratulate self being better average enjoy able hobby both complex de manding fully realize irresponsible behavior reckless flying can tolerated Safety factor everyone connected model aviation concerned mustnt rest pat yourself back certainly flying keep both hands transmitter Continue think about what doing time start engine Get completely absorbed task flying airplane Plan moves execute smoothly noth ing surprise around have experience get through flight hand experience con siderable asset Congratulate yourself Youve earned RC Aerobatics/Van Putte Continued page 49 called Deveon White Two Ton Epoxy Un fortunately does seem available through normal hobby distributors least ones does business Hes sending sample try out works well claims Ill try find Out purchase put information column Right now Im working new 40-size powered Supertigre 60 sport airplane started about 12 years ago fiber glass fuselage purchased Royal Products about 1970 ought well cured now 140 Model Aviation D EE High perform engine connoc /%%1731 NW 45 Street Ft Lauderdale FL 33309 1395l 491-6115 ENGINEERING THE LANUING GEAR PEOPLE 1irsd hil landing gears dsnl lii year biggie prtperly II & II Enginoenig can seine four prsbleins * Cuattot haul four needs & specs gooratleelt Ia lit * Slrnog & durable Ia withstand toughest landing * 9 & 0 Engineering gear will warh & keep biggie hf log * In stack replaceniott lear 1st papolar models Byrun PitIs Christen EaIe CAP 21 Balsa USA J3 CUB Air Tech Powace Eagle lIsten Big Stick Champ Citulmna B & models Snapper Stinger Stopper Tat FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve ifs easy starting reliability list Line 15011 646-1656 Fox MFG Co 5305 TDWSON AVE FORT SMITH ARK 72901 AlTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA SIO MORGAN BALSA USA PIATT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER P171S iS & SCALE SUPER CUB POKKER 0-7 BOEING P- 12 P-26 F4B2 P4B4 SPARROW HAWK GEE BEE MOO r MACBRIENS TuRBULENT cHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J3-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANS t35 SCALE t/4 SCALE DECATHALON PIPER PAtB ft OTHERS WHEEL PANTS FOR CITABRIA STAROUSTER II PIUS SKYBOLT LINER TI SPORT CHRISTEN EAGLE PB E HAWK STEARMAN STINSON SR-S MULLIGAN ft OTHERS BRAZED & HEAT-TREATED WIRE GEARS& CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers fiberglass parts plansWrite call us T Et D FIBERGLASS SPECIALTIES 30925 eLOCK GARDEN CITY Ml 40136 PHONE 313 421-6358 made now defunct think company called Plantation Models foam wing cut 10 years ago wife travelled Maryland Florida survived two moves down club members gave incentive finish observed almost slow builder Anyway after covering wing last weekend proceeded mount fixed gear binge ailerons Would believe Id almost gotten mount fixed landing gears years building retractable-landinggear airplanes caused forget some tech niques installing fixed gears came back quickly enough once got started though thought might useful present way setting up fixed gear installation start mounting engine fuselage putting correct-size prop block model up fiat surface using old shoe boxes books until airplane level prop clears floor table about inch measure distance bottom wing gear location floor nose gear plugs fuselage floor After subtracting half diameter respective wheels final bend points main gears nose gear can marked gear wires Goldberg adjustable axles being used easier bending gear wires Just clamp axles gear wires marked Dont forget file gear wire set screw axle will spin around slide up wire Some people solder adjustable axle gear wire after installation has checked Whichever technique used airplane should sit level doesnt either takeoff landing problems will result nose-high attitude will make bouncy landings because wing zant dump lift after touchdown decreasing its sngle attack nose-low attitude trouble lao because wing may actually develop nega live lift runway during takeoff run tnd make difficult rotate airplane akeoff Neither situation desirable fliers save lot trouble taking time woperly set up landing gears Ron Van Putie Ill Sleepy Oaks Rd Ft Wa/ Beach FL 32548 C Scale/Wiscer ontinued page 51 lenient weight white glue between balsa snd plywood pressure needs applied br hour have made good joints 20 ninutes temperature can raised lacing assembly warm spot may e wet glue outside joint intemally ure quite complete doubt about time equired make test sample Balsa will tear away ut glue joint remains intact Such tests ften performed full-scale construction vooden airplanes prove techniques Dons use nodel cement laminating needs air Iry Combinations materials help keep cate airplanes intact among worth vhite individualistic tricks building re ertoire arts foam insulation Wing cores made om foam plastic common other model Irts can also built up fiberglass cloth er foam core odd shapes ost likely candidates type construction ogine cowls wheel pants broad struts nacelles id fairings have made fiberglass over Continued page 144 4-40 STEEL KWIK-LINKS #9 4-413 links con structed top quality spring steel Control linkage hook-ups Cat No 304 2 $100 DU-BRO 4-40 KWIK-LINKS I12 rod iflClUdd / Cat No 306$ 75 sa NICKEL PLATED SOLDER LINKS new 4-40 solder links nickel plated easy soldering Cat No 3052 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY e HINGES Easy install precisionStrong smooth andBuilt heavy load DIJBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free lockedthe small the1/4 scale applications checked forheavy duty hingesThey use removable000 smoothness theIX cc factoryAll have sixtIIkj3/64 dia cotter pin holes each000 formax- um holding Ktz000 000 Cat No 1186 per pkg $106Cat No 116 6 per pkg $110Cat No 257 Cat No ii9 15 per pkg $195Cat No 117 15 per pltg $24915 per pkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED OURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 43 7/32 1413116 QQ139 1/9 138 3/32 137 1116 [ Heavy duty $1 00-2 per set f----$ 80 per set sets gf 4 HEAVY DUTY 4-40 BALL LINK Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse lage minutes drill 3/1 6 hole Cat No 203$175 4SF 0g DUBRO SNAP-ON BALL LINKS Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight y Excellent offset steering servo throttle hook-ups Bolt $85 Threaded $85 Cat No 180 Cat No 181 Cat No 182 DUO BRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 June 1983 141 Top Quality Name Can Depend NEW________
Edition: Model Aviation - 1983/06
Page Numbers: 48, 49, 140, 141
Radio Control SPORT AEROBA TICS Ron Van Putte ANNIVERSARY TIME Another column marks beginning ninth year colum nist Model Aviation have magazine since first issue came out 1975 early days magazine about 80 pages parts color covers truth Model Aviation couldnt begin com pare couple other model magazines back Old pro Bill Winter editor knew know about putting out quality magazinebut us leam talking Associate Editor Ross Mc Mullen other day told him delighted reader job people front office like Publisher/Editor Carl Wheeley Art Director Herb Silbermann Edi tors note Lets forget Andrea Peterson Johnnie Shipley done tuming Model Avi ation quality magazine Im proud Model Aviation feel same way let talented hard-workers editorial office hear about Periodically make requests good pictures often mention need good pictures con testants local contests usually tell column provided purposewere Glenn faimess should promptly corrected am thought received pictures Carters views characterize sure would wish pictures needed wanted Nothing group denigrating another therefore quite mac- Hes right course As old story goes could farther truth pictures curate journalistically matter what Van Putte meant write What could magazine send other columnists subject Turnaround Pattern has received lot attention recently April issue Model Aviation Soapbox letter Chuck Mills took exception Glenn Carters December 1982 Soapbox letter March issue also comments relative same Carter letter short after column published received letter Floyd Law rence Secretary/Treasurer IMAC International Miniature Acrobatic Club Floyd said part true until about year ago Glenn Carter Secretary/Treasurer IMAC andif anyonecould speak group such no longer case have replaced Glenn Secretary/Treasurer now have active involved Board Directors role propose policy membership concurrence Glenn Carter continues highly re spected member IMAC serving both District 10 Director member IMACs Rules Judging Committee views expressed Soapbox letteras am sure Glenn would tell virtually such letters 48 Model Aviation Lt toi treti Art ourque ayes miume airplanes rims u,ss n,s are its size World Expert transmitter Jack 6 trom tiiea IIODDICS KIT mogitieg Tar DOil-Ori wings i ne uesugn rias exceptIonally deep fuselage airplane its size Art Bourques pride joya FOKker Triplane tie auiii aaoui u years ago rree Flightonly recently converted use Ace AC pulse radio Glenn Carter wrote own opinion official view IMAC What meant take exception member group den igrating another group kind action creates anger resentment certainly does nobody good February column described bond lightweight fiberglass cloth wing skins prior attaching wing skin foam wing Several people have written ask additional information consensus problem seems epoxy brushed through glass cloth balsa skin cloth tries move around Well does have hold cloth down epoxy brushed found two tricks work alleviate prob lem First cloth should smoothed out wing skin much possible hold edge cloth down brush epoxy progres sively along across wing skin Second epoxy thinned slightly rubbing alcohol easier brush through glass cloth balsa skin have careful thin epoxy too much Thinning epoxy makes easier brush too much thinning causes two bad effects first amount epoxy sticking cloth balsa skin reduced cloth has tendency pop loose second alcohol expands balsa causes waviness skin combined reduced stickiness epoxy causes wrinkles glass cloth next impossible stick down later am well-experienced problem because added too much alcohol epoxy last wing resulting wrinkles caused about twice much work preparing wing skin would have wrinkles call John Kenney owns Square Loop Hobby Center Greenwood MS wanted tell hed sold lot Dave Brown epoxy after February column ap peared also passed technique applying epoxy easier using brush pours mixed epoxy shallow Tefloncoated tray rolls slightly-modified plastic sponge hair rollers large pink ones epoxy onto wing skin sponge tends expand somewhat cuts about half inch off length roller before using claims rollers much better brush cause glass cloth doesnt tend move around wing skin Sounds great wife will have buy rollers meId feel obligated ex plain sales clerk buying would probably cause con fusion John also told about filled epoxy claims works well Sears filled epoxy Continued page 140 June 1983 49 Mike Bells pit crew may little young now hell grow job Mikes airplane venerable designan Art Schroeder Eyeball Offered Two Sizes Kborits nu Plan Drawings S Partial Kits Quarter Scale Kioritz type Engine 94 Span Oaarter Scale Plan Set $3000 6 Sheets Opposite Wing View $1200 2 Sheets 2 Scale Plan Set $150012 Sheetsl Opposite Wino View add $77h 2 Scale 60 Engtnes 63 Span 980 Sq 50 tar Fiesigns needKits ot noar bailding Dealer inquiries invited connecting rods made bent materials available designed give long service eliminate rod breakage modern highPerfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Or. San Jose CA 9512914081257-7059 Capacitors CI C2 C3 C6AVX 047 uf 50-volt CK7 tempco C4 C5AVX 001 uf 50-volt MOSFETs Siemens BUZ 10 equivalent 60-volt 20-amp Rds m finished speed control including MOSFETs available $49 An sembled board less MOSFETs available $29 Bare printed circuit board etched drilled solder reflowed $750 Con tact Jomar Products 2028 Knightsbridge Dr Cincinnati OH 45244 Congratulate/Kinning Continued page 47 until sky thins out number planes feel comfortable fly heavy air traffic remain control yourself well airplane dont get angry al have midair dont say illmannered things other fliers lousy flier doesnt have fun certainly tries does loops snap rolls around through trafficand pulls up sharply narrowly averts head-on because hes flying against pattern Sometimes nar rowly misses tail section someones pride joy seems could care less because hes having ball Worst gets angry verbally loses temper people cant about crowded situation can Landing times comes finish flight ready have looked see field clear have sig nalled let other fliers know intentions announcing loud voice Landing have looked see air space clear no other airplanes will interfere set up final approach cut throttle slow airplane grease another right front contrast poor flier will best overtake final approachor hell make tight circle landing pattern impeding traffic behind him sweep down fast-idle hard landing half way down field flier must watch him closely doesnt believe verbal signals has problem Nu advance planning mind wondering whats lunch whether buddies watching wild maneuvers Congratulations ordinary flying might say basic stuff instructor taught before soloed Theres nothing very remarkable about Besides bad-flier cases cited hypothetical could never happen real world RC Perhaps youre right Arent glad nobody flies like bad flier club bottom line next time youre flying field someone does something annoy congratulate self being better average enjoy able hobby both complex de manding fully realize irresponsible behavior reckless flying can tolerated Safety factor everyone connected model aviation concerned mustnt rest pat yourself back certainly flying keep both hands transmitter Continue think about what doing time start engine Get completely absorbed task flying airplane Plan moves execute smoothly noth ing surprise around have experience get through flight hand experience con siderable asset Congratulate yourself Youve earned RC Aerobatics/Van Putte Continued page 49 called Deveon White Two Ton Epoxy Un fortunately does seem available through normal hobby distributors least ones does business Hes sending sample try out works well claims Ill try find Out purchase put information column Right now Im working new 40-size powered Supertigre 60 sport airplane started about 12 years ago fiber glass fuselage purchased Royal Products about 1970 ought well cured now 140 Model Aviation D EE High perform engine connoc /%%1731 NW 45 Street Ft Lauderdale FL 33309 1395l 491-6115 ENGINEERING THE LANUING GEAR PEOPLE 1irsd hil landing gears dsnl lii year biggie prtperly II & II Enginoenig can seine four prsbleins * Cuattot haul four needs & specs gooratleelt Ia lit * Slrnog & durable Ia withstand toughest landing * 9 & 0 Engineering gear will warh & keep biggie hf log * In stack replaceniott lear 1st papolar models Byrun PitIs Christen EaIe CAP 21 Balsa USA J3 CUB Air Tech Powace Eagle lIsten Big Stick Champ Citulmna B & models Snapper Stinger Stopper Tat FOX 35 STUNT IN CONTINUOUS PRODUCTION FOR 34 YEARS Remember Control Line Simple Airplane atteries no servos requency problems lectric starters no tension way fly dont re-live yesteryears helping child young neighbor build fly Control Line Model Motor 35 Stunt course 34 years nobody has able improve ifs easy starting reliability list Line 15011 646-1656 Fox MFG Co 5305 TDWSON AVE FORT SMITH ARK 72901 AlTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA SIO MORGAN BALSA USA PIATT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER P171S iS & SCALE SUPER CUB POKKER 0-7 BOEING P- 12 P-26 F4B2 P4B4 SPARROW HAWK GEE BEE MOO r MACBRIENS TuRBULENT cHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J3-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANS t35 SCALE t/4 SCALE DECATHALON PIPER PAtB ft OTHERS WHEEL PANTS FOR CITABRIA STAROUSTER II PIUS SKYBOLT LINER TI SPORT CHRISTEN EAGLE PB E HAWK STEARMAN STINSON SR-S MULLIGAN ft OTHERS BRAZED & HEAT-TREATED WIRE GEARS& CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers fiberglass parts plansWrite call us T Et D FIBERGLASS SPECIALTIES 30925 eLOCK GARDEN CITY Ml 40136 PHONE 313 421-6358 made now defunct think company called Plantation Models foam wing cut 10 years ago wife travelled Maryland Florida survived two moves down club members gave incentive finish observed almost slow builder Anyway after covering wing last weekend proceeded mount fixed gear binge ailerons Would believe Id almost gotten mount fixed landing gears years building retractable-landinggear airplanes caused forget some tech niques installing fixed gears came back quickly enough once got started though thought might useful present way setting up fixed gear installation start mounting engine fuselage putting correct-size prop block model up fiat surface using old shoe boxes books until airplane level prop clears floor table about inch measure distance bottom wing gear location floor nose gear plugs fuselage floor After subtracting half diameter respective wheels final bend points main gears nose gear can marked gear wires Goldberg adjustable axles being used easier bending gear wires Just clamp axles gear wires marked Dont forget file gear wire set screw axle will spin around slide up wire Some people solder adjustable axle gear wire after installation has checked Whichever technique used airplane should sit level doesnt either takeoff landing problems will result nose-high attitude will make bouncy landings because wing zant dump lift after touchdown decreasing its sngle attack nose-low attitude trouble lao because wing may actually develop nega live lift runway during takeoff run tnd make difficult rotate airplane akeoff Neither situation desirable fliers save lot trouble taking time woperly set up landing gears Ron Van Putie Ill Sleepy Oaks Rd Ft Wa/ Beach FL 32548 C Scale/Wiscer ontinued page 51 lenient weight white glue between balsa snd plywood pressure needs applied br hour have made good joints 20 ninutes temperature can raised lacing assembly warm spot may e wet glue outside joint intemally ure quite complete doubt about time equired make test sample Balsa will tear away ut glue joint remains intact Such tests ften performed full-scale construction vooden airplanes prove techniques Dons use nodel cement laminating needs air Iry Combinations materials help keep cate airplanes intact among worth vhite individualistic tricks building re ertoire arts foam insulation Wing cores made om foam plastic common other model Irts can also built up fiberglass cloth er foam core odd shapes ost likely candidates type construction ogine cowls wheel pants broad struts nacelles id fairings have made fiberglass over Continued page 144 4-40 STEEL KWIK-LINKS #9 4-413 links con structed top quality spring steel Control linkage hook-ups Cat No 304 2 $100 DU-BRO 4-40 KWIK-LINKS I12 rod iflClUdd / Cat No 306$ 75 sa NICKEL PLATED SOLDER LINKS new 4-40 solder links nickel plated easy soldering Cat No 3052 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY e HINGES Easy install precisionStrong smooth andBuilt heavy load DIJBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free lockedthe small the1/4 scale applications checked forheavy duty hingesThey use removable000 smoothness theIX cc factoryAll have sixtIIkj3/64 dia cotter pin holes each000 formax- um holding Ktz000 000 Cat No 1186 per pkg $106Cat No 116 6 per pkg $110Cat No 257 Cat No ii9 15 per pkg $195Cat No 117 15 per pltg $24915 per pkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED OURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 43 7/32 1413116 QQ139 1/9 138 3/32 137 1116 [ Heavy duty $1 00-2 per set f----$ 80 per set sets gf 4 HEAVY DUTY 4-40 BALL LINK Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse lage minutes drill 3/1 6 hole Cat No 203$175 4SF 0g DUBRO SNAP-ON BALL LINKS Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight y Excellent offset steering servo throttle hook-ups Bolt $85 Threaded $85 Cat No 180 Cat No 181 Cat No 182 DUO BRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 June 1983 141 Top Quality Name Can Depend NEW________