John Preston Safety Comes First Reader poll boron filaments Preflight inspec tions qualified em Always check out new RC flight pack before installing model AFTER wrote Safety column appeared March 1985 issue MA Ive received number letters concern ing hnznrd handling boron fila ments may used strengthen models minimal gain weight March column reprinted excerpts letter received noted Scale modeler Bill Warner stated according Bud Tenny Indoor crowd thinking banning boron recently received copy another letter subject ban boron models sent John Worth Califor ma modeler letter modeler stated WE DONT NEED IT Lets ban modeling What does take get ban AMA FAL dont believe AMA has power ban boron modeling example AMA has no enforcement pow ers control manufacturers and/or retailers someone wishes market boron filaments whatever use model ing other purposes know no laws regulations Federal State prevent such practice However AMA can prevent models containing boron filaments being flown AMA-sanctioned contests Any AMA member entitled submit proposal change rules AMA rule book received members other year Under normal circumstances time between sub mittal rules change proposal effective date change quite lengthy However rules change propos al concerns safety can become effec tive much quicker through emergency procedure Certainly would seem proposal ban use boron models entered AMA-sanctioned con tests would qualify emergency rules change procedure question should $ II -I 4I. %- -A - NOW ThAT PRE- FLIGI4T INSPECTION JASNT 30 such ban enacted should cover AMA competition categories some brings point discussion would like solicit opinions readers issue whether com petition rules should changed outlaw models reinforced boron filaments simplify task expressing opinion please respond following two questions postcard answers necessary Question No 1 Should change made General rules Section 4 AMA rule book pro hibit models containing boron filament entering AMA-sanctioned competition category Question No 2If answered NO Ques tion No 1 believe boron filament should pro hibited models entered certain specified AMA-sanc tioned competition events specify events answered YES Question No 2 wish see ban boron models entered Indoor event need state Indoor isnt necessary itemize Indoor events Similarly may want see ban ex tend both Indoor Outdoor Free Flight events just state Free Flight seems use boron filament provide model competitive advantage lightweight high strength would likely events duration objective other words Free Flight modeler likely person use boron result have gain lose boron banned RC Sailplane enthusiasts may also use boron fabrication high-strength wing spars interests fall categories Id like have answers two questions above Before responding two questions bear mind change AMA competition rules prohibit boroncontaining models would extend competition under FAT rules World Championships event think need ask ourselves AMA ban boron would seriously disadvantage US modelers pit skills against modelers other countries some Continued page 22 20 Model Aviation advertising material put out distrib utor boron filament following statement made Europeans about year ahead us Indoor model applications last Indoor World Championships Romania Swiss team models did require fuselage bracing Boron glued onto motor stick distributor also states Boron made America Swiss first find out about material start using models Now see just about 50o everything ship goes overseas decision future use boron models should weigh advantages winning contests against disadvantages hazard users modeling interests lie category might benefit competition use boron filament please take time respond two questions address end column Ive mentioned several times past importance conducting Preflight Inspection latest pride joy before taking off bore holes sky Full-scale aircraft pilots routinely model aircraft pilots too Human error likely reason model aircraft seldom last forever preflight safety check can both extend life model minimize likeli hood accident flying field However perform inspec tion have know what look following story concerns preflight inspec tions according letter Les Hard AMA HQ time read Safety column story will have appeared IMAA newsletter High Flight edited Les would nice could always save face mistakes made possible safety con cerned So put myself sacrificial fire benefit others attended A-scale fly-in recently Citabria passed safety inspection made very good friend feeling comfortable strange field asked friend fly Citabria would spotter Let point out Citabria flown home field least 12 times occasion very hot day plane experienced couple very short unex plained unwanted signals 72080 MHz passed off foreign signals hits Flights later proved very stable made during calm early evenings Back fly-in control checks run up made after some fine-tuning engine agreed everything OK friend taxied eager Cita bria out onto strip poured coal plane accomplished smooth takeoff after six seven feet air veered slightly right Continued page 24 22 Model Aviation l~ S 0e~ C~ OQ SdE7ql V0— o THE FIRST ANNUAL PFR/CM RADIO CONTROL EXPOSITION Sunnybrook Ballroom Rt 422 Pottstown PA 19464 September 13 14 15 1985 Friday Saturday Sunday part what will become largest Radio Control Exposition rast Coast Watch ads information 4 10-12 mph wind toward crowd point its pilot discovered no con trol heart sank feet leaped throathe exclaimed DONT HAVE IT Fortunately 20 incidence wing velocity wind caused plane clear crowd busy road behind crowd before burying its nose bushy tree engine Quadra 35 busied itself tearing its props off increasing its rpm chain-saw scream After shock subsided throttle retarded receiver acknowledged signal engine died Thank God allbut now point reckoned what happened After retrieving plane tree able assistance pickup driver high camper boost tree concerned attendant careful process disassembly took place trying discover fault safety inspector looking As wing removed inspector exclaimed @%@ foam around receiver retorted Yes Ive 12 flights way As discussed situation realized what must have happened receiver sat half-inch foam plywood hooks sides rubberbands securing receiver rubberbands pulled hooks side receiver causing vibrations Q35 engine transmitted receiver suspicions have cracked crystal component circuit board caused earlier flights vibra tion transferred receiver trou ble reared its ugiy head apparently hot day home again finally hot day fly-in main culprits being vibration temperature would like express deep apolo gies fine club hosting fly-in Gentlemen wrap receivers three layers A-in soft rubber foam tie down snugiy too tightly rubberbands keep stray wiring ie strobe circuitry on-board starter wires glow plug wires other foreign wiring away receiver igni tion engines long wiring leads should shielded grounded back engine crankcase guess moral story preflight inspections should cover both exterior interior model Just far should probe nards model debatable Perhaps since builder knows best equipment installed some pointed questions concerning installation hook-up controls might sufficient Another question comes mind concerning effectiveness inspec tion should doing inspect ing previous story stated Continued page 127 24 Model Aviation EumEEmEEEE SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 FREIGHT COLLECT % NITROPINTQUARTGALLON55 GAL DRUM 0% FAI$295$425$ 995$17500 5%$350$495$1195$24500 10%$395$525$1395$31000 15%$415$595$1595$37400 25%$475$695$1995$50000 35%$550$795$2395$64000 NEW SIG4-STROKE FUEL 10%$395$525$1350$29500 15%$415$595$1550$35900 THE CHOICE OF CHAMPION FLYERS Dont misled price alone model fuels same Some cut-rate mail order fuel outlets selling 10% fuel really contains about 8% nitro skimp costly nitro formulating fuel weight basis rather traditional percent-of-volume method Also some mail order fuels blended little 15% total oil Thats OK get perfect needle setting everytime otherwise lean run can easily ruin engine Cuts quality like make easy blend com petitively priced fuel really getting quality want over 20 years SIG has blending fuel finest quality ingredients available alcohol 995% pure very best grade available nitro use 100% pure get honest portion based % volume maximum lubrication get perfect 50/50 blend Bakers AA Castor Oil Klotz Techniplate Racing Oil protect expensive engines finest quality fuel can made price Dont take word try some judge yourself l See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 moddcajli TOUCH UP AIR BRUSH FOR DETAIL PAINTING OF AIRPLANE WINGS AND BOATS$4000 ARISTO TEX COVERING MATERIAL NEWI AND THE BEST YET CONTOURS BETTER WITH RICH COLORS BETTER STICK ING AND FUEL RESISTANT RED BLUE BLACK ORANGE WHITE GREEN ANlIQUE YELLOW 2 METER ROLL $720 TACHOMETER W/LED READ OUT FOR EAS FIELD READING CAfl00 ACCURATE ENGINE R PM IECE WOOD ING SET FOR HOBBYISTSA $30011 SOLDERING GUN 21 PIECE TOOL SET US SIZE SCREWDRIVERS PLUS PHILLIPS HEX AND WRENCH TYPES $700 4~4cz LE HANDS > WITH MAGNIFIER FOR EXTRA HELP IN HOLDING THOSE SMALL PARTS WHILE SOLDERING GLUING OR PAINTING MAGNIFIER LAMP WITH MULTI POSITION 3 1/ FLEXIBLE ARM 3 DIOPTER $3000 LENS FOR 4 liMES MAGNIFICATION Letters Editor Continued page 8 did pass out engines club nonclub members did realize loss until home passed out engines could controlled did inventory engines audience still present circumstance fortunate speaker club working resolve issue can see club can placed very difficult situation Current AMA insurance will cover type loss insurance avail able guest speakers homeowner s insur ance may want acquire insurance type occurrence minimum should institute controls meeting safeguard speakers assets addition give guest speaker some guidelines example case may want speaker hand out two engines time hope experience will help other AMA Chartered Clubs become aware another area prudence must prac ticed off flying site liability exposure everywhere John F Murray Pres Cape Ann RC Club Danvers MA Guest Editorial Continued page 14 3 OR 4 BLADE iIIIZiII~3K PROP does lead case got us back flying field club lost its field last summer due noise complaints local residents met residents administration field did noise-level tests decided aircraft too noisy could use field loss prompted investigation noise problem subsequent meeting same group demonstrated dramatic ally cut noise-emission levels residents agreed within confines 88 dBa would allowed use flying site again EditorAccompanying foregoing letter Joe Murray vice-president Radio Controlled Flying Club ronto Canada saying origi nally produced clubs news letter after about years study problem Later ran noise sym posium particlpation majority area clubs now general effort being made cut down overall noise levels has produced dramatic decrease number com plaints Joe pleased say writing advertisers mention read about Model Aviation WRAM Show/Myers Continued page 18 kinds products like see put forth Since talking about ducted fans might well take look example Nick Ziroli Models now offers kit F-4 RK-40 fan prototype flies well use 0S 46 ducted-fan engine Im sure would use Sullivan starter extension start en gine installation Curses foiled again Overall evaluation necessary nar row-band radios slowly beginning appear US manufacturers first answer call need offshore crowd now beginning follow suit Weve needed ever since new RC channels granted Im little puzzled delay introducing may idea 1991 receiver took some attention away fact 1991 right now far technical requirements concerned Safety Preston Continued page 24 Citabria passed safety inspection made very good friend Im suggesting friend deliberately overlooked things might otherwise have checked friends might assume things done right fact recently heard tale about qualifi cations inspectors models worth relating Although concerns incident club am mem ber wasnt field time following account related eyewitness beginner arrived field brand-new never-been-flown model club question has written check list such new models has designated certain members qualified inspectors occasion three qualified inspec tors spent about half hour scrutinizing model Apparently found noth ing out order model ap proved its first flight pilot flight clubs instructors After check engine operation instructor taxied out attempted takeoff model broke ground banked towards pit area whereupon pilot tried straighten out applying opposite aileron control increased bank towards pits model ended its short first flight striking trWsh can located rear pit area near fence separates pits Continued page 130 June1985127 SCALE RADIO CONTROL JLLOS Safety Preston Continued page 127 parking area Can guess what wrong postmortem discovered ailerons hooked up backwards Remem ber three qualified inspectors spent 30 minutes checking model missed builders error Perhaps case too cooks can spoil broth isnt sufficient just check correct control surface wiggles wiggle appropriate stick has wiggle right direction too WHEELS CONTROL-UNE FREE-FLIGHT 000 AGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 343/"23/4"3/ 13131/41321/341/3 1144/a11/433/411/443/a3451/4 11/3511/341411453 1/a65/a21451/41/a614 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA PAWNEE ST. SAN MAICOS CA 9 Human error source problems confined builders fliers models Sometimes manufacturing er ror can cause some grief Just last week received fourth recall notice 1978 automobile dont believe Ive ever heard recall concerning hobby product doesnt mean everything purchase local hobby store perfect few months ago received letter Paul Beretta modeler Glen Cove NY fol lowing Pauls own words experi ence manufacturing error want share incident other day Having pur chased new radio charged bat teries time test out airplane servos receiver switch harness already installed just few moments work hook up battery Since main purposes time servo-travel setup CG adjustment left battery unwrapped flipped switch receiver turned pick up transmitter turned back airplane smoke billowing top fuselage managed pull battery loose switch harness minor burns drop still smoking floor Investigation proved cause problem defective shorted switch result destruction switch harness receiver battery wiring battery case cells dont like think what could have happened battery foam-wrapped stuffed deep side nose plane wires glowing red like big glow plug although materials wires battery case merely melted smoked other materials inside plane may have behaved differently manufacturer kind cooperative about replacing damaged components So aside loss new toy week suffered no real loss can sure though future will check out electrical components outside aircraft before installation important thing aware tremendous heat-generat ing capacity short circuited Ni-Cds know until incident aware Pauls letter jogged memory about similar incident report read number years ago model er purchased new radio hobby store during journey home allegedly set fire station wagon time reaction Ho-Hum hes trying get new car out ra dio manufacturers insurance company Perhaps wrong another case short somewhere radios battery circuitry Anyway moral stories Paul did Always bench check new radio before installa tion model Nobody perfectnot hobby-equipment manufacturers Have safe month John Preton 12235 Tilden wood Dr Rockvile MD 20852 Rooster/Dickey Continued page 35 wing Balance model carefully point shown plans average lift centers aft center gravity After have balanced model dont change balance point trying chase trim prob Continued page 132 130 Model Aviation
Edition: Model Aviation - 1985/06
Page Numbers: 20, 22, 24, 127, 130
John Preston Safety Comes First Reader poll boron filaments Preflight inspec tions qualified em Always check out new RC flight pack before installing model AFTER wrote Safety column appeared March 1985 issue MA Ive received number letters concern ing hnznrd handling boron fila ments may used strengthen models minimal gain weight March column reprinted excerpts letter received noted Scale modeler Bill Warner stated according Bud Tenny Indoor crowd thinking banning boron recently received copy another letter subject ban boron models sent John Worth Califor ma modeler letter modeler stated WE DONT NEED IT Lets ban modeling What does take get ban AMA FAL dont believe AMA has power ban boron modeling example AMA has no enforcement pow ers control manufacturers and/or retailers someone wishes market boron filaments whatever use model ing other purposes know no laws regulations Federal State prevent such practice However AMA can prevent models containing boron filaments being flown AMA-sanctioned contests Any AMA member entitled submit proposal change rules AMA rule book received members other year Under normal circumstances time between sub mittal rules change proposal effective date change quite lengthy However rules change propos al concerns safety can become effec tive much quicker through emergency procedure Certainly would seem proposal ban use boron models entered AMA-sanctioned con tests would qualify emergency rules change procedure question should $ II -I 4I. %- -A - NOW ThAT PRE- FLIGI4T INSPECTION JASNT 30 such ban enacted should cover AMA competition categories some brings point discussion would like solicit opinions readers issue whether com petition rules should changed outlaw models reinforced boron filaments simplify task expressing opinion please respond following two questions postcard answers necessary Question No 1 Should change made General rules Section 4 AMA rule book pro hibit models containing boron filament entering AMA-sanctioned competition category Question No 2If answered NO Ques tion No 1 believe boron filament should pro hibited models entered certain specified AMA-sanc tioned competition events specify events answered YES Question No 2 wish see ban boron models entered Indoor event need state Indoor isnt necessary itemize Indoor events Similarly may want see ban ex tend both Indoor Outdoor Free Flight events just state Free Flight seems use boron filament provide model competitive advantage lightweight high strength would likely events duration objective other words Free Flight modeler likely person use boron result have gain lose boron banned RC Sailplane enthusiasts may also use boron fabrication high-strength wing spars interests fall categories Id like have answers two questions above Before responding two questions bear mind change AMA competition rules prohibit boroncontaining models would extend competition under FAT rules World Championships event think need ask ourselves AMA ban boron would seriously disadvantage US modelers pit skills against modelers other countries some Continued page 22 20 Model Aviation advertising material put out distrib utor boron filament following statement made Europeans about year ahead us Indoor model applications last Indoor World Championships Romania Swiss team models did require fuselage bracing Boron glued onto motor stick distributor also states Boron made America Swiss first find out about material start using models Now see just about 50o everything ship goes overseas decision future use boron models should weigh advantages winning contests against disadvantages hazard users modeling interests lie category might benefit competition use boron filament please take time respond two questions address end column Ive mentioned several times past importance conducting Preflight Inspection latest pride joy before taking off bore holes sky Full-scale aircraft pilots routinely model aircraft pilots too Human error likely reason model aircraft seldom last forever preflight safety check can both extend life model minimize likeli hood accident flying field However perform inspec tion have know what look following story concerns preflight inspec tions according letter Les Hard AMA HQ time read Safety column story will have appeared IMAA newsletter High Flight edited Les would nice could always save face mistakes made possible safety con cerned So put myself sacrificial fire benefit others attended A-scale fly-in recently Citabria passed safety inspection made very good friend feeling comfortable strange field asked friend fly Citabria would spotter Let point out Citabria flown home field least 12 times occasion very hot day plane experienced couple very short unex plained unwanted signals 72080 MHz passed off foreign signals hits Flights later proved very stable made during calm early evenings Back fly-in control checks run up made after some fine-tuning engine agreed everything OK friend taxied eager Cita bria out onto strip poured coal plane accomplished smooth takeoff after six seven feet air veered slightly right Continued page 24 22 Model Aviation l~ S 0e~ C~ OQ SdE7ql V0— o THE FIRST ANNUAL PFR/CM RADIO CONTROL EXPOSITION Sunnybrook Ballroom Rt 422 Pottstown PA 19464 September 13 14 15 1985 Friday Saturday Sunday part what will become largest Radio Control Exposition rast Coast Watch ads information 4 10-12 mph wind toward crowd point its pilot discovered no con trol heart sank feet leaped throathe exclaimed DONT HAVE IT Fortunately 20 incidence wing velocity wind caused plane clear crowd busy road behind crowd before burying its nose bushy tree engine Quadra 35 busied itself tearing its props off increasing its rpm chain-saw scream After shock subsided throttle retarded receiver acknowledged signal engine died Thank God allbut now point reckoned what happened After retrieving plane tree able assistance pickup driver high camper boost tree concerned attendant careful process disassembly took place trying discover fault safety inspector looking As wing removed inspector exclaimed @%@ foam around receiver retorted Yes Ive 12 flights way As discussed situation realized what must have happened receiver sat half-inch foam plywood hooks sides rubberbands securing receiver rubberbands pulled hooks side receiver causing vibrations Q35 engine transmitted receiver suspicions have cracked crystal component circuit board caused earlier flights vibra tion transferred receiver trou ble reared its ugiy head apparently hot day home again finally hot day fly-in main culprits being vibration temperature would like express deep apolo gies fine club hosting fly-in Gentlemen wrap receivers three layers A-in soft rubber foam tie down snugiy too tightly rubberbands keep stray wiring ie strobe circuitry on-board starter wires glow plug wires other foreign wiring away receiver igni tion engines long wiring leads should shielded grounded back engine crankcase guess moral story preflight inspections should cover both exterior interior model Just far should probe nards model debatable Perhaps since builder knows best equipment installed some pointed questions concerning installation hook-up controls might sufficient Another question comes mind concerning effectiveness inspec tion should doing inspect ing previous story stated Continued page 127 24 Model Aviation EumEEmEEEE SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 FREIGHT COLLECT % NITROPINTQUARTGALLON55 GAL DRUM 0% FAI$295$425$ 995$17500 5%$350$495$1195$24500 10%$395$525$1395$31000 15%$415$595$1595$37400 25%$475$695$1995$50000 35%$550$795$2395$64000 NEW SIG4-STROKE FUEL 10%$395$525$1350$29500 15%$415$595$1550$35900 THE CHOICE OF CHAMPION FLYERS Dont misled price alone model fuels same Some cut-rate mail order fuel outlets selling 10% fuel really contains about 8% nitro skimp costly nitro formulating fuel weight basis rather traditional percent-of-volume method Also some mail order fuels blended little 15% total oil Thats OK get perfect needle setting everytime otherwise lean run can easily ruin engine Cuts quality like make easy blend com petitively priced fuel really getting quality want over 20 years SIG has blending fuel finest quality ingredients available alcohol 995% pure very best grade available nitro use 100% pure get honest portion based % volume maximum lubrication get perfect 50/50 blend Bakers AA Castor Oil Klotz Techniplate Racing Oil protect expensive engines finest quality fuel can made price Dont take word try some judge yourself l See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 moddcajli TOUCH UP AIR BRUSH FOR DETAIL PAINTING OF AIRPLANE WINGS AND BOATS$4000 ARISTO TEX COVERING MATERIAL NEWI AND THE BEST YET CONTOURS BETTER WITH RICH COLORS BETTER STICK ING AND FUEL RESISTANT RED BLUE BLACK ORANGE WHITE GREEN ANlIQUE YELLOW 2 METER ROLL $720 TACHOMETER W/LED READ OUT FOR EAS FIELD READING CAfl00 ACCURATE ENGINE R PM IECE WOOD ING SET FOR HOBBYISTSA $30011 SOLDERING GUN 21 PIECE TOOL SET US SIZE SCREWDRIVERS PLUS PHILLIPS HEX AND WRENCH TYPES $700 4~4cz LE HANDS > WITH MAGNIFIER FOR EXTRA HELP IN HOLDING THOSE SMALL PARTS WHILE SOLDERING GLUING OR PAINTING MAGNIFIER LAMP WITH MULTI POSITION 3 1/ FLEXIBLE ARM 3 DIOPTER $3000 LENS FOR 4 liMES MAGNIFICATION Letters Editor Continued page 8 did pass out engines club nonclub members did realize loss until home passed out engines could controlled did inventory engines audience still present circumstance fortunate speaker club working resolve issue can see club can placed very difficult situation Current AMA insurance will cover type loss insurance avail able guest speakers homeowner s insur ance may want acquire insurance type occurrence minimum should institute controls meeting safeguard speakers assets addition give guest speaker some guidelines example case may want speaker hand out two engines time hope experience will help other AMA Chartered Clubs become aware another area prudence must prac ticed off flying site liability exposure everywhere John F Murray Pres Cape Ann RC Club Danvers MA Guest Editorial Continued page 14 3 OR 4 BLADE iIIIZiII~3K PROP does lead case got us back flying field club lost its field last summer due noise complaints local residents met residents administration field did noise-level tests decided aircraft too noisy could use field loss prompted investigation noise problem subsequent meeting same group demonstrated dramatic ally cut noise-emission levels residents agreed within confines 88 dBa would allowed use flying site again EditorAccompanying foregoing letter Joe Murray vice-president Radio Controlled Flying Club ronto Canada saying origi nally produced clubs news letter after about years study problem Later ran noise sym posium particlpation majority area clubs now general effort being made cut down overall noise levels has produced dramatic decrease number com plaints Joe pleased say writing advertisers mention read about Model Aviation WRAM Show/Myers Continued page 18 kinds products like see put forth Since talking about ducted fans might well take look example Nick Ziroli Models now offers kit F-4 RK-40 fan prototype flies well use 0S 46 ducted-fan engine Im sure would use Sullivan starter extension start en gine installation Curses foiled again Overall evaluation necessary nar row-band radios slowly beginning appear US manufacturers first answer call need offshore crowd now beginning follow suit Weve needed ever since new RC channels granted Im little puzzled delay introducing may idea 1991 receiver took some attention away fact 1991 right now far technical requirements concerned Safety Preston Continued page 24 Citabria passed safety inspection made very good friend Im suggesting friend deliberately overlooked things might otherwise have checked friends might assume things done right fact recently heard tale about qualifi cations inspectors models worth relating Although concerns incident club am mem ber wasnt field time following account related eyewitness beginner arrived field brand-new never-been-flown model club question has written check list such new models has designated certain members qualified inspectors occasion three qualified inspec tors spent about half hour scrutinizing model Apparently found noth ing out order model ap proved its first flight pilot flight clubs instructors After check engine operation instructor taxied out attempted takeoff model broke ground banked towards pit area whereupon pilot tried straighten out applying opposite aileron control increased bank towards pits model ended its short first flight striking trWsh can located rear pit area near fence separates pits Continued page 130 June1985127 SCALE RADIO CONTROL JLLOS Safety Preston Continued page 127 parking area Can guess what wrong postmortem discovered ailerons hooked up backwards Remem ber three qualified inspectors spent 30 minutes checking model missed builders error Perhaps case too cooks can spoil broth isnt sufficient just check correct control surface wiggles wiggle appropriate stick has wiggle right direction too WHEELS CONTROL-UNE FREE-FLIGHT 000 AGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 343/"23/4"3/ 13131/41321/341/3 1144/a11/433/411/443/a3451/4 11/3511/341411453 1/a65/a21451/41/a614 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA PAWNEE ST. SAN MAICOS CA 9 Human error source problems confined builders fliers models Sometimes manufacturing er ror can cause some grief Just last week received fourth recall notice 1978 automobile dont believe Ive ever heard recall concerning hobby product doesnt mean everything purchase local hobby store perfect few months ago received letter Paul Beretta modeler Glen Cove NY fol lowing Pauls own words experi ence manufacturing error want share incident other day Having pur chased new radio charged bat teries time test out airplane servos receiver switch harness already installed just few moments work hook up battery Since main purposes time servo-travel setup CG adjustment left battery unwrapped flipped switch receiver turned pick up transmitter turned back airplane smoke billowing top fuselage managed pull battery loose switch harness minor burns drop still smoking floor Investigation proved cause problem defective shorted switch result destruction switch harness receiver battery wiring battery case cells dont like think what could have happened battery foam-wrapped stuffed deep side nose plane wires glowing red like big glow plug although materials wires battery case merely melted smoked other materials inside plane may have behaved differently manufacturer kind cooperative about replacing damaged components So aside loss new toy week suffered no real loss can sure though future will check out electrical components outside aircraft before installation important thing aware tremendous heat-generat ing capacity short circuited Ni-Cds know until incident aware Pauls letter jogged memory about similar incident report read number years ago model er purchased new radio hobby store during journey home allegedly set fire station wagon time reaction Ho-Hum hes trying get new car out ra dio manufacturers insurance company Perhaps wrong another case short somewhere radios battery circuitry Anyway moral stories Paul did Always bench check new radio before installa tion model Nobody perfectnot hobby-equipment manufacturers Have safe month John Preton 12235 Tilden wood Dr Rockvile MD 20852 Rooster/Dickey Continued page 35 wing Balance model carefully point shown plans average lift centers aft center gravity After have balanced model dont change balance point trying chase trim prob Continued page 132 130 Model Aviation
Edition: Model Aviation - 1985/06
Page Numbers: 20, 22, 24, 127, 130
John Preston Safety Comes First Reader poll boron filaments Preflight inspec tions qualified em Always check out new RC flight pack before installing model AFTER wrote Safety column appeared March 1985 issue MA Ive received number letters concern ing hnznrd handling boron fila ments may used strengthen models minimal gain weight March column reprinted excerpts letter received noted Scale modeler Bill Warner stated according Bud Tenny Indoor crowd thinking banning boron recently received copy another letter subject ban boron models sent John Worth Califor ma modeler letter modeler stated WE DONT NEED IT Lets ban modeling What does take get ban AMA FAL dont believe AMA has power ban boron modeling example AMA has no enforcement pow ers control manufacturers and/or retailers someone wishes market boron filaments whatever use model ing other purposes know no laws regulations Federal State prevent such practice However AMA can prevent models containing boron filaments being flown AMA-sanctioned contests Any AMA member entitled submit proposal change rules AMA rule book received members other year Under normal circumstances time between sub mittal rules change proposal effective date change quite lengthy However rules change propos al concerns safety can become effec tive much quicker through emergency procedure Certainly would seem proposal ban use boron models entered AMA-sanctioned con tests would qualify emergency rules change procedure question should $ II -I 4I. %- -A - NOW ThAT PRE- FLIGI4T INSPECTION JASNT 30 such ban enacted should cover AMA competition categories some brings point discussion would like solicit opinions readers issue whether com petition rules should changed outlaw models reinforced boron filaments simplify task expressing opinion please respond following two questions postcard answers necessary Question No 1 Should change made General rules Section 4 AMA rule book pro hibit models containing boron filament entering AMA-sanctioned competition category Question No 2If answered NO Ques tion No 1 believe boron filament should pro hibited models entered certain specified AMA-sanc tioned competition events specify events answered YES Question No 2 wish see ban boron models entered Indoor event need state Indoor isnt necessary itemize Indoor events Similarly may want see ban ex tend both Indoor Outdoor Free Flight events just state Free Flight seems use boron filament provide model competitive advantage lightweight high strength would likely events duration objective other words Free Flight modeler likely person use boron result have gain lose boron banned RC Sailplane enthusiasts may also use boron fabrication high-strength wing spars interests fall categories Id like have answers two questions above Before responding two questions bear mind change AMA competition rules prohibit boroncontaining models would extend competition under FAT rules World Championships event think need ask ourselves AMA ban boron would seriously disadvantage US modelers pit skills against modelers other countries some Continued page 22 20 Model Aviation advertising material put out distrib utor boron filament following statement made Europeans about year ahead us Indoor model applications last Indoor World Championships Romania Swiss team models did require fuselage bracing Boron glued onto motor stick distributor also states Boron made America Swiss first find out about material start using models Now see just about 50o everything ship goes overseas decision future use boron models should weigh advantages winning contests against disadvantages hazard users modeling interests lie category might benefit competition use boron filament please take time respond two questions address end column Ive mentioned several times past importance conducting Preflight Inspection latest pride joy before taking off bore holes sky Full-scale aircraft pilots routinely model aircraft pilots too Human error likely reason model aircraft seldom last forever preflight safety check can both extend life model minimize likeli hood accident flying field However perform inspec tion have know what look following story concerns preflight inspec tions according letter Les Hard AMA HQ time read Safety column story will have appeared IMAA newsletter High Flight edited Les would nice could always save face mistakes made possible safety con cerned So put myself sacrificial fire benefit others attended A-scale fly-in recently Citabria passed safety inspection made very good friend feeling comfortable strange field asked friend fly Citabria would spotter Let point out Citabria flown home field least 12 times occasion very hot day plane experienced couple very short unex plained unwanted signals 72080 MHz passed off foreign signals hits Flights later proved very stable made during calm early evenings Back fly-in control checks run up made after some fine-tuning engine agreed everything OK friend taxied eager Cita bria out onto strip poured coal plane accomplished smooth takeoff after six seven feet air veered slightly right Continued page 24 22 Model Aviation l~ S 0e~ C~ OQ SdE7ql V0— o THE FIRST ANNUAL PFR/CM RADIO CONTROL EXPOSITION Sunnybrook Ballroom Rt 422 Pottstown PA 19464 September 13 14 15 1985 Friday Saturday Sunday part what will become largest Radio Control Exposition rast Coast Watch ads information 4 10-12 mph wind toward crowd point its pilot discovered no con trol heart sank feet leaped throathe exclaimed DONT HAVE IT Fortunately 20 incidence wing velocity wind caused plane clear crowd busy road behind crowd before burying its nose bushy tree engine Quadra 35 busied itself tearing its props off increasing its rpm chain-saw scream After shock subsided throttle retarded receiver acknowledged signal engine died Thank God allbut now point reckoned what happened After retrieving plane tree able assistance pickup driver high camper boost tree concerned attendant careful process disassembly took place trying discover fault safety inspector looking As wing removed inspector exclaimed @%@ foam around receiver retorted Yes Ive 12 flights way As discussed situation realized what must have happened receiver sat half-inch foam plywood hooks sides rubberbands securing receiver rubberbands pulled hooks side receiver causing vibrations Q35 engine transmitted receiver suspicions have cracked crystal component circuit board caused earlier flights vibra tion transferred receiver trou ble reared its ugiy head apparently hot day home again finally hot day fly-in main culprits being vibration temperature would like express deep apolo gies fine club hosting fly-in Gentlemen wrap receivers three layers A-in soft rubber foam tie down snugiy too tightly rubberbands keep stray wiring ie strobe circuitry on-board starter wires glow plug wires other foreign wiring away receiver igni tion engines long wiring leads should shielded grounded back engine crankcase guess moral story preflight inspections should cover both exterior interior model Just far should probe nards model debatable Perhaps since builder knows best equipment installed some pointed questions concerning installation hook-up controls might sufficient Another question comes mind concerning effectiveness inspec tion should doing inspect ing previous story stated Continued page 127 24 Model Aviation EumEEmEEEE SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 FREIGHT COLLECT % NITROPINTQUARTGALLON55 GAL DRUM 0% FAI$295$425$ 995$17500 5%$350$495$1195$24500 10%$395$525$1395$31000 15%$415$595$1595$37400 25%$475$695$1995$50000 35%$550$795$2395$64000 NEW SIG4-STROKE FUEL 10%$395$525$1350$29500 15%$415$595$1550$35900 THE CHOICE OF CHAMPION FLYERS Dont misled price alone model fuels same Some cut-rate mail order fuel outlets selling 10% fuel really contains about 8% nitro skimp costly nitro formulating fuel weight basis rather traditional percent-of-volume method Also some mail order fuels blended little 15% total oil Thats OK get perfect needle setting everytime otherwise lean run can easily ruin engine Cuts quality like make easy blend com petitively priced fuel really getting quality want over 20 years SIG has blending fuel finest quality ingredients available alcohol 995% pure very best grade available nitro use 100% pure get honest portion based % volume maximum lubrication get perfect 50/50 blend Bakers AA Castor Oil Klotz Techniplate Racing Oil protect expensive engines finest quality fuel can made price Dont take word try some judge yourself l See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 moddcajli TOUCH UP AIR BRUSH FOR DETAIL PAINTING OF AIRPLANE WINGS AND BOATS$4000 ARISTO TEX COVERING MATERIAL NEWI AND THE BEST YET CONTOURS BETTER WITH RICH COLORS BETTER STICK ING AND FUEL RESISTANT RED BLUE BLACK ORANGE WHITE GREEN ANlIQUE YELLOW 2 METER ROLL $720 TACHOMETER W/LED READ OUT FOR EAS FIELD READING CAfl00 ACCURATE ENGINE R PM IECE WOOD ING SET FOR HOBBYISTSA $30011 SOLDERING GUN 21 PIECE TOOL SET US SIZE SCREWDRIVERS PLUS PHILLIPS HEX AND WRENCH TYPES $700 4~4cz LE HANDS > WITH MAGNIFIER FOR EXTRA HELP IN HOLDING THOSE SMALL PARTS WHILE SOLDERING GLUING OR PAINTING MAGNIFIER LAMP WITH MULTI POSITION 3 1/ FLEXIBLE ARM 3 DIOPTER $3000 LENS FOR 4 liMES MAGNIFICATION Letters Editor Continued page 8 did pass out engines club nonclub members did realize loss until home passed out engines could controlled did inventory engines audience still present circumstance fortunate speaker club working resolve issue can see club can placed very difficult situation Current AMA insurance will cover type loss insurance avail able guest speakers homeowner s insur ance may want acquire insurance type occurrence minimum should institute controls meeting safeguard speakers assets addition give guest speaker some guidelines example case may want speaker hand out two engines time hope experience will help other AMA Chartered Clubs become aware another area prudence must prac ticed off flying site liability exposure everywhere John F Murray Pres Cape Ann RC Club Danvers MA Guest Editorial Continued page 14 3 OR 4 BLADE iIIIZiII~3K PROP does lead case got us back flying field club lost its field last summer due noise complaints local residents met residents administration field did noise-level tests decided aircraft too noisy could use field loss prompted investigation noise problem subsequent meeting same group demonstrated dramatic ally cut noise-emission levels residents agreed within confines 88 dBa would allowed use flying site again EditorAccompanying foregoing letter Joe Murray vice-president Radio Controlled Flying Club ronto Canada saying origi nally produced clubs news letter after about years study problem Later ran noise sym posium particlpation majority area clubs now general effort being made cut down overall noise levels has produced dramatic decrease number com plaints Joe pleased say writing advertisers mention read about Model Aviation WRAM Show/Myers Continued page 18 kinds products like see put forth Since talking about ducted fans might well take look example Nick Ziroli Models now offers kit F-4 RK-40 fan prototype flies well use 0S 46 ducted-fan engine Im sure would use Sullivan starter extension start en gine installation Curses foiled again Overall evaluation necessary nar row-band radios slowly beginning appear US manufacturers first answer call need offshore crowd now beginning follow suit Weve needed ever since new RC channels granted Im little puzzled delay introducing may idea 1991 receiver took some attention away fact 1991 right now far technical requirements concerned Safety Preston Continued page 24 Citabria passed safety inspection made very good friend Im suggesting friend deliberately overlooked things might otherwise have checked friends might assume things done right fact recently heard tale about qualifi cations inspectors models worth relating Although concerns incident club am mem ber wasnt field time following account related eyewitness beginner arrived field brand-new never-been-flown model club question has written check list such new models has designated certain members qualified inspectors occasion three qualified inspec tors spent about half hour scrutinizing model Apparently found noth ing out order model ap proved its first flight pilot flight clubs instructors After check engine operation instructor taxied out attempted takeoff model broke ground banked towards pit area whereupon pilot tried straighten out applying opposite aileron control increased bank towards pits model ended its short first flight striking trWsh can located rear pit area near fence separates pits Continued page 130 June1985127 SCALE RADIO CONTROL JLLOS Safety Preston Continued page 127 parking area Can guess what wrong postmortem discovered ailerons hooked up backwards Remem ber three qualified inspectors spent 30 minutes checking model missed builders error Perhaps case too cooks can spoil broth isnt sufficient just check correct control surface wiggles wiggle appropriate stick has wiggle right direction too WHEELS CONTROL-UNE FREE-FLIGHT 000 AGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 343/"23/4"3/ 13131/41321/341/3 1144/a11/433/411/443/a3451/4 11/3511/341411453 1/a65/a21451/41/a614 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA PAWNEE ST. SAN MAICOS CA 9 Human error source problems confined builders fliers models Sometimes manufacturing er ror can cause some grief Just last week received fourth recall notice 1978 automobile dont believe Ive ever heard recall concerning hobby product doesnt mean everything purchase local hobby store perfect few months ago received letter Paul Beretta modeler Glen Cove NY fol lowing Pauls own words experi ence manufacturing error want share incident other day Having pur chased new radio charged bat teries time test out airplane servos receiver switch harness already installed just few moments work hook up battery Since main purposes time servo-travel setup CG adjustment left battery unwrapped flipped switch receiver turned pick up transmitter turned back airplane smoke billowing top fuselage managed pull battery loose switch harness minor burns drop still smoking floor Investigation proved cause problem defective shorted switch result destruction switch harness receiver battery wiring battery case cells dont like think what could have happened battery foam-wrapped stuffed deep side nose plane wires glowing red like big glow plug although materials wires battery case merely melted smoked other materials inside plane may have behaved differently manufacturer kind cooperative about replacing damaged components So aside loss new toy week suffered no real loss can sure though future will check out electrical components outside aircraft before installation important thing aware tremendous heat-generat ing capacity short circuited Ni-Cds know until incident aware Pauls letter jogged memory about similar incident report read number years ago model er purchased new radio hobby store during journey home allegedly set fire station wagon time reaction Ho-Hum hes trying get new car out ra dio manufacturers insurance company Perhaps wrong another case short somewhere radios battery circuitry Anyway moral stories Paul did Always bench check new radio before installa tion model Nobody perfectnot hobby-equipment manufacturers Have safe month John Preton 12235 Tilden wood Dr Rockvile MD 20852 Rooster/Dickey Continued page 35 wing Balance model carefully point shown plans average lift centers aft center gravity After have balanced model dont change balance point trying chase trim prob Continued page 132 130 Model Aviation
Edition: Model Aviation - 1985/06
Page Numbers: 20, 22, 24, 127, 130
John Preston Safety Comes First Reader poll boron filaments Preflight inspec tions qualified em Always check out new RC flight pack before installing model AFTER wrote Safety column appeared March 1985 issue MA Ive received number letters concern ing hnznrd handling boron fila ments may used strengthen models minimal gain weight March column reprinted excerpts letter received noted Scale modeler Bill Warner stated according Bud Tenny Indoor crowd thinking banning boron recently received copy another letter subject ban boron models sent John Worth Califor ma modeler letter modeler stated WE DONT NEED IT Lets ban modeling What does take get ban AMA FAL dont believe AMA has power ban boron modeling example AMA has no enforcement pow ers control manufacturers and/or retailers someone wishes market boron filaments whatever use model ing other purposes know no laws regulations Federal State prevent such practice However AMA can prevent models containing boron filaments being flown AMA-sanctioned contests Any AMA member entitled submit proposal change rules AMA rule book received members other year Under normal circumstances time between sub mittal rules change proposal effective date change quite lengthy However rules change propos al concerns safety can become effec tive much quicker through emergency procedure Certainly would seem proposal ban use boron models entered AMA-sanctioned con tests would qualify emergency rules change procedure question should $ II -I 4I. %- -A - NOW ThAT PRE- FLIGI4T INSPECTION JASNT 30 such ban enacted should cover AMA competition categories some brings point discussion would like solicit opinions readers issue whether com petition rules should changed outlaw models reinforced boron filaments simplify task expressing opinion please respond following two questions postcard answers necessary Question No 1 Should change made General rules Section 4 AMA rule book pro hibit models containing boron filament entering AMA-sanctioned competition category Question No 2If answered NO Ques tion No 1 believe boron filament should pro hibited models entered certain specified AMA-sanc tioned competition events specify events answered YES Question No 2 wish see ban boron models entered Indoor event need state Indoor isnt necessary itemize Indoor events Similarly may want see ban ex tend both Indoor Outdoor Free Flight events just state Free Flight seems use boron filament provide model competitive advantage lightweight high strength would likely events duration objective other words Free Flight modeler likely person use boron result have gain lose boron banned RC Sailplane enthusiasts may also use boron fabrication high-strength wing spars interests fall categories Id like have answers two questions above Before responding two questions bear mind change AMA competition rules prohibit boroncontaining models would extend competition under FAT rules World Championships event think need ask ourselves AMA ban boron would seriously disadvantage US modelers pit skills against modelers other countries some Continued page 22 20 Model Aviation advertising material put out distrib utor boron filament following statement made Europeans about year ahead us Indoor model applications last Indoor World Championships Romania Swiss team models did require fuselage bracing Boron glued onto motor stick distributor also states Boron made America Swiss first find out about material start using models Now see just about 50o everything ship goes overseas decision future use boron models should weigh advantages winning contests against disadvantages hazard users modeling interests lie category might benefit competition use boron filament please take time respond two questions address end column Ive mentioned several times past importance conducting Preflight Inspection latest pride joy before taking off bore holes sky Full-scale aircraft pilots routinely model aircraft pilots too Human error likely reason model aircraft seldom last forever preflight safety check can both extend life model minimize likeli hood accident flying field However perform inspec tion have know what look following story concerns preflight inspec tions according letter Les Hard AMA HQ time read Safety column story will have appeared IMAA newsletter High Flight edited Les would nice could always save face mistakes made possible safety con cerned So put myself sacrificial fire benefit others attended A-scale fly-in recently Citabria passed safety inspection made very good friend feeling comfortable strange field asked friend fly Citabria would spotter Let point out Citabria flown home field least 12 times occasion very hot day plane experienced couple very short unex plained unwanted signals 72080 MHz passed off foreign signals hits Flights later proved very stable made during calm early evenings Back fly-in control checks run up made after some fine-tuning engine agreed everything OK friend taxied eager Cita bria out onto strip poured coal plane accomplished smooth takeoff after six seven feet air veered slightly right Continued page 24 22 Model Aviation l~ S 0e~ C~ OQ SdE7ql V0— o THE FIRST ANNUAL PFR/CM RADIO CONTROL EXPOSITION Sunnybrook Ballroom Rt 422 Pottstown PA 19464 September 13 14 15 1985 Friday Saturday Sunday part what will become largest Radio Control Exposition rast Coast Watch ads information 4 10-12 mph wind toward crowd point its pilot discovered no con trol heart sank feet leaped throathe exclaimed DONT HAVE IT Fortunately 20 incidence wing velocity wind caused plane clear crowd busy road behind crowd before burying its nose bushy tree engine Quadra 35 busied itself tearing its props off increasing its rpm chain-saw scream After shock subsided throttle retarded receiver acknowledged signal engine died Thank God allbut now point reckoned what happened After retrieving plane tree able assistance pickup driver high camper boost tree concerned attendant careful process disassembly took place trying discover fault safety inspector looking As wing removed inspector exclaimed @%@ foam around receiver retorted Yes Ive 12 flights way As discussed situation realized what must have happened receiver sat half-inch foam plywood hooks sides rubberbands securing receiver rubberbands pulled hooks side receiver causing vibrations Q35 engine transmitted receiver suspicions have cracked crystal component circuit board caused earlier flights vibra tion transferred receiver trou ble reared its ugiy head apparently hot day home again finally hot day fly-in main culprits being vibration temperature would like express deep apolo gies fine club hosting fly-in Gentlemen wrap receivers three layers A-in soft rubber foam tie down snugiy too tightly rubberbands keep stray wiring ie strobe circuitry on-board starter wires glow plug wires other foreign wiring away receiver igni tion engines long wiring leads should shielded grounded back engine crankcase guess moral story preflight inspections should cover both exterior interior model Just far should probe nards model debatable Perhaps since builder knows best equipment installed some pointed questions concerning installation hook-up controls might sufficient Another question comes mind concerning effectiveness inspec tion should doing inspect ing previous story stated Continued page 127 24 Model Aviation EumEEmEEEE SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 FREIGHT COLLECT % NITROPINTQUARTGALLON55 GAL DRUM 0% FAI$295$425$ 995$17500 5%$350$495$1195$24500 10%$395$525$1395$31000 15%$415$595$1595$37400 25%$475$695$1995$50000 35%$550$795$2395$64000 NEW SIG4-STROKE FUEL 10%$395$525$1350$29500 15%$415$595$1550$35900 THE CHOICE OF CHAMPION FLYERS Dont misled price alone model fuels same Some cut-rate mail order fuel outlets selling 10% fuel really contains about 8% nitro skimp costly nitro formulating fuel weight basis rather traditional percent-of-volume method Also some mail order fuels blended little 15% total oil Thats OK get perfect needle setting everytime otherwise lean run can easily ruin engine Cuts quality like make easy blend com petitively priced fuel really getting quality want over 20 years SIG has blending fuel finest quality ingredients available alcohol 995% pure very best grade available nitro use 100% pure get honest portion based % volume maximum lubrication get perfect 50/50 blend Bakers AA Castor Oil Klotz Techniplate Racing Oil protect expensive engines finest quality fuel can made price Dont take word try some judge yourself l See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 moddcajli TOUCH UP AIR BRUSH FOR DETAIL PAINTING OF AIRPLANE WINGS AND BOATS$4000 ARISTO TEX COVERING MATERIAL NEWI AND THE BEST YET CONTOURS BETTER WITH RICH COLORS BETTER STICK ING AND FUEL RESISTANT RED BLUE BLACK ORANGE WHITE GREEN ANlIQUE YELLOW 2 METER ROLL $720 TACHOMETER W/LED READ OUT FOR EAS FIELD READING CAfl00 ACCURATE ENGINE R PM IECE WOOD ING SET FOR HOBBYISTSA $30011 SOLDERING GUN 21 PIECE TOOL SET US SIZE SCREWDRIVERS PLUS PHILLIPS HEX AND WRENCH TYPES $700 4~4cz LE HANDS > WITH MAGNIFIER FOR EXTRA HELP IN HOLDING THOSE SMALL PARTS WHILE SOLDERING GLUING OR PAINTING MAGNIFIER LAMP WITH MULTI POSITION 3 1/ FLEXIBLE ARM 3 DIOPTER $3000 LENS FOR 4 liMES MAGNIFICATION Letters Editor Continued page 8 did pass out engines club nonclub members did realize loss until home passed out engines could controlled did inventory engines audience still present circumstance fortunate speaker club working resolve issue can see club can placed very difficult situation Current AMA insurance will cover type loss insurance avail able guest speakers homeowner s insur ance may want acquire insurance type occurrence minimum should institute controls meeting safeguard speakers assets addition give guest speaker some guidelines example case may want speaker hand out two engines time hope experience will help other AMA Chartered Clubs become aware another area prudence must prac ticed off flying site liability exposure everywhere John F Murray Pres Cape Ann RC Club Danvers MA Guest Editorial Continued page 14 3 OR 4 BLADE iIIIZiII~3K PROP does lead case got us back flying field club lost its field last summer due noise complaints local residents met residents administration field did noise-level tests decided aircraft too noisy could use field loss prompted investigation noise problem subsequent meeting same group demonstrated dramatic ally cut noise-emission levels residents agreed within confines 88 dBa would allowed use flying site again EditorAccompanying foregoing letter Joe Murray vice-president Radio Controlled Flying Club ronto Canada saying origi nally produced clubs news letter after about years study problem Later ran noise sym posium particlpation majority area clubs now general effort being made cut down overall noise levels has produced dramatic decrease number com plaints Joe pleased say writing advertisers mention read about Model Aviation WRAM Show/Myers Continued page 18 kinds products like see put forth Since talking about ducted fans might well take look example Nick Ziroli Models now offers kit F-4 RK-40 fan prototype flies well use 0S 46 ducted-fan engine Im sure would use Sullivan starter extension start en gine installation Curses foiled again Overall evaluation necessary nar row-band radios slowly beginning appear US manufacturers first answer call need offshore crowd now beginning follow suit Weve needed ever since new RC channels granted Im little puzzled delay introducing may idea 1991 receiver took some attention away fact 1991 right now far technical requirements concerned Safety Preston Continued page 24 Citabria passed safety inspection made very good friend Im suggesting friend deliberately overlooked things might otherwise have checked friends might assume things done right fact recently heard tale about qualifi cations inspectors models worth relating Although concerns incident club am mem ber wasnt field time following account related eyewitness beginner arrived field brand-new never-been-flown model club question has written check list such new models has designated certain members qualified inspectors occasion three qualified inspec tors spent about half hour scrutinizing model Apparently found noth ing out order model ap proved its first flight pilot flight clubs instructors After check engine operation instructor taxied out attempted takeoff model broke ground banked towards pit area whereupon pilot tried straighten out applying opposite aileron control increased bank towards pits model ended its short first flight striking trWsh can located rear pit area near fence separates pits Continued page 130 June1985127 SCALE RADIO CONTROL JLLOS Safety Preston Continued page 127 parking area Can guess what wrong postmortem discovered ailerons hooked up backwards Remem ber three qualified inspectors spent 30 minutes checking model missed builders error Perhaps case too cooks can spoil broth isnt sufficient just check correct control surface wiggles wiggle appropriate stick has wiggle right direction too WHEELS CONTROL-UNE FREE-FLIGHT 000 AGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 343/"23/4"3/ 13131/41321/341/3 1144/a11/433/411/443/a3451/4 11/3511/341411453 1/a65/a21451/41/a614 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA PAWNEE ST. SAN MAICOS CA 9 Human error source problems confined builders fliers models Sometimes manufacturing er ror can cause some grief Just last week received fourth recall notice 1978 automobile dont believe Ive ever heard recall concerning hobby product doesnt mean everything purchase local hobby store perfect few months ago received letter Paul Beretta modeler Glen Cove NY fol lowing Pauls own words experi ence manufacturing error want share incident other day Having pur chased new radio charged bat teries time test out airplane servos receiver switch harness already installed just few moments work hook up battery Since main purposes time servo-travel setup CG adjustment left battery unwrapped flipped switch receiver turned pick up transmitter turned back airplane smoke billowing top fuselage managed pull battery loose switch harness minor burns drop still smoking floor Investigation proved cause problem defective shorted switch result destruction switch harness receiver battery wiring battery case cells dont like think what could have happened battery foam-wrapped stuffed deep side nose plane wires glowing red like big glow plug although materials wires battery case merely melted smoked other materials inside plane may have behaved differently manufacturer kind cooperative about replacing damaged components So aside loss new toy week suffered no real loss can sure though future will check out electrical components outside aircraft before installation important thing aware tremendous heat-generat ing capacity short circuited Ni-Cds know until incident aware Pauls letter jogged memory about similar incident report read number years ago model er purchased new radio hobby store during journey home allegedly set fire station wagon time reaction Ho-Hum hes trying get new car out ra dio manufacturers insurance company Perhaps wrong another case short somewhere radios battery circuitry Anyway moral stories Paul did Always bench check new radio before installa tion model Nobody perfectnot hobby-equipment manufacturers Have safe month John Preton 12235 Tilden wood Dr Rockvile MD 20852 Rooster/Dickey Continued page 35 wing Balance model carefully point shown plans average lift centers aft center gravity After have balanced model dont change balance point trying chase trim prob Continued page 132 130 Model Aviation
Edition: Model Aviation - 1985/06
Page Numbers: 20, 22, 24, 127, 130
John Preston Safety Comes First Reader poll boron filaments Preflight inspec tions qualified em Always check out new RC flight pack before installing model AFTER wrote Safety column appeared March 1985 issue MA Ive received number letters concern ing hnznrd handling boron fila ments may used strengthen models minimal gain weight March column reprinted excerpts letter received noted Scale modeler Bill Warner stated according Bud Tenny Indoor crowd thinking banning boron recently received copy another letter subject ban boron models sent John Worth Califor ma modeler letter modeler stated WE DONT NEED IT Lets ban modeling What does take get ban AMA FAL dont believe AMA has power ban boron modeling example AMA has no enforcement pow ers control manufacturers and/or retailers someone wishes market boron filaments whatever use model ing other purposes know no laws regulations Federal State prevent such practice However AMA can prevent models containing boron filaments being flown AMA-sanctioned contests Any AMA member entitled submit proposal change rules AMA rule book received members other year Under normal circumstances time between sub mittal rules change proposal effective date change quite lengthy However rules change propos al concerns safety can become effec tive much quicker through emergency procedure Certainly would seem proposal ban use boron models entered AMA-sanctioned con tests would qualify emergency rules change procedure question should $ II -I 4I. %- -A - NOW ThAT PRE- FLIGI4T INSPECTION JASNT 30 such ban enacted should cover AMA competition categories some brings point discussion would like solicit opinions readers issue whether com petition rules should changed outlaw models reinforced boron filaments simplify task expressing opinion please respond following two questions postcard answers necessary Question No 1 Should change made General rules Section 4 AMA rule book pro hibit models containing boron filament entering AMA-sanctioned competition category Question No 2If answered NO Ques tion No 1 believe boron filament should pro hibited models entered certain specified AMA-sanc tioned competition events specify events answered YES Question No 2 wish see ban boron models entered Indoor event need state Indoor isnt necessary itemize Indoor events Similarly may want see ban ex tend both Indoor Outdoor Free Flight events just state Free Flight seems use boron filament provide model competitive advantage lightweight high strength would likely events duration objective other words Free Flight modeler likely person use boron result have gain lose boron banned RC Sailplane enthusiasts may also use boron fabrication high-strength wing spars interests fall categories Id like have answers two questions above Before responding two questions bear mind change AMA competition rules prohibit boroncontaining models would extend competition under FAT rules World Championships event think need ask ourselves AMA ban boron would seriously disadvantage US modelers pit skills against modelers other countries some Continued page 22 20 Model Aviation advertising material put out distrib utor boron filament following statement made Europeans about year ahead us Indoor model applications last Indoor World Championships Romania Swiss team models did require fuselage bracing Boron glued onto motor stick distributor also states Boron made America Swiss first find out about material start using models Now see just about 50o everything ship goes overseas decision future use boron models should weigh advantages winning contests against disadvantages hazard users modeling interests lie category might benefit competition use boron filament please take time respond two questions address end column Ive mentioned several times past importance conducting Preflight Inspection latest pride joy before taking off bore holes sky Full-scale aircraft pilots routinely model aircraft pilots too Human error likely reason model aircraft seldom last forever preflight safety check can both extend life model minimize likeli hood accident flying field However perform inspec tion have know what look following story concerns preflight inspec tions according letter Les Hard AMA HQ time read Safety column story will have appeared IMAA newsletter High Flight edited Les would nice could always save face mistakes made possible safety con cerned So put myself sacrificial fire benefit others attended A-scale fly-in recently Citabria passed safety inspection made very good friend feeling comfortable strange field asked friend fly Citabria would spotter Let point out Citabria flown home field least 12 times occasion very hot day plane experienced couple very short unex plained unwanted signals 72080 MHz passed off foreign signals hits Flights later proved very stable made during calm early evenings Back fly-in control checks run up made after some fine-tuning engine agreed everything OK friend taxied eager Cita bria out onto strip poured coal plane accomplished smooth takeoff after six seven feet air veered slightly right Continued page 24 22 Model Aviation l~ S 0e~ C~ OQ SdE7ql V0— o THE FIRST ANNUAL PFR/CM RADIO CONTROL EXPOSITION Sunnybrook Ballroom Rt 422 Pottstown PA 19464 September 13 14 15 1985 Friday Saturday Sunday part what will become largest Radio Control Exposition rast Coast Watch ads information 4 10-12 mph wind toward crowd point its pilot discovered no con trol heart sank feet leaped throathe exclaimed DONT HAVE IT Fortunately 20 incidence wing velocity wind caused plane clear crowd busy road behind crowd before burying its nose bushy tree engine Quadra 35 busied itself tearing its props off increasing its rpm chain-saw scream After shock subsided throttle retarded receiver acknowledged signal engine died Thank God allbut now point reckoned what happened After retrieving plane tree able assistance pickup driver high camper boost tree concerned attendant careful process disassembly took place trying discover fault safety inspector looking As wing removed inspector exclaimed @%@ foam around receiver retorted Yes Ive 12 flights way As discussed situation realized what must have happened receiver sat half-inch foam plywood hooks sides rubberbands securing receiver rubberbands pulled hooks side receiver causing vibrations Q35 engine transmitted receiver suspicions have cracked crystal component circuit board caused earlier flights vibra tion transferred receiver trou ble reared its ugiy head apparently hot day home again finally hot day fly-in main culprits being vibration temperature would like express deep apolo gies fine club hosting fly-in Gentlemen wrap receivers three layers A-in soft rubber foam tie down snugiy too tightly rubberbands keep stray wiring ie strobe circuitry on-board starter wires glow plug wires other foreign wiring away receiver igni tion engines long wiring leads should shielded grounded back engine crankcase guess moral story preflight inspections should cover both exterior interior model Just far should probe nards model debatable Perhaps since builder knows best equipment installed some pointed questions concerning installation hook-up controls might sufficient Another question comes mind concerning effectiveness inspec tion should doing inspect ing previous story stated Continued page 127 24 Model Aviation EumEEmEEEE SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 FREIGHT COLLECT % NITROPINTQUARTGALLON55 GAL DRUM 0% FAI$295$425$ 995$17500 5%$350$495$1195$24500 10%$395$525$1395$31000 15%$415$595$1595$37400 25%$475$695$1995$50000 35%$550$795$2395$64000 NEW SIG4-STROKE FUEL 10%$395$525$1350$29500 15%$415$595$1550$35900 THE CHOICE OF CHAMPION FLYERS Dont misled price alone model fuels same Some cut-rate mail order fuel outlets selling 10% fuel really contains about 8% nitro skimp costly nitro formulating fuel weight basis rather traditional percent-of-volume method Also some mail order fuels blended little 15% total oil Thats OK get perfect needle setting everytime otherwise lean run can easily ruin engine Cuts quality like make easy blend com petitively priced fuel really getting quality want over 20 years SIG has blending fuel finest quality ingredients available alcohol 995% pure very best grade available nitro use 100% pure get honest portion based % volume maximum lubrication get perfect 50/50 blend Bakers AA Castor Oil Klotz Techniplate Racing Oil protect expensive engines finest quality fuel can made price Dont take word try some judge yourself l See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 moddcajli TOUCH UP AIR BRUSH FOR DETAIL PAINTING OF AIRPLANE WINGS AND BOATS$4000 ARISTO TEX COVERING MATERIAL NEWI AND THE BEST YET CONTOURS BETTER WITH RICH COLORS BETTER STICK ING AND FUEL RESISTANT RED BLUE BLACK ORANGE WHITE GREEN ANlIQUE YELLOW 2 METER ROLL $720 TACHOMETER W/LED READ OUT FOR EAS FIELD READING CAfl00 ACCURATE ENGINE R PM IECE WOOD ING SET FOR HOBBYISTSA $30011 SOLDERING GUN 21 PIECE TOOL SET US SIZE SCREWDRIVERS PLUS PHILLIPS HEX AND WRENCH TYPES $700 4~4cz LE HANDS > WITH MAGNIFIER FOR EXTRA HELP IN HOLDING THOSE SMALL PARTS WHILE SOLDERING GLUING OR PAINTING MAGNIFIER LAMP WITH MULTI POSITION 3 1/ FLEXIBLE ARM 3 DIOPTER $3000 LENS FOR 4 liMES MAGNIFICATION Letters Editor Continued page 8 did pass out engines club nonclub members did realize loss until home passed out engines could controlled did inventory engines audience still present circumstance fortunate speaker club working resolve issue can see club can placed very difficult situation Current AMA insurance will cover type loss insurance avail able guest speakers homeowner s insur ance may want acquire insurance type occurrence minimum should institute controls meeting safeguard speakers assets addition give guest speaker some guidelines example case may want speaker hand out two engines time hope experience will help other AMA Chartered Clubs become aware another area prudence must prac ticed off flying site liability exposure everywhere John F Murray Pres Cape Ann RC Club Danvers MA Guest Editorial Continued page 14 3 OR 4 BLADE iIIIZiII~3K PROP does lead case got us back flying field club lost its field last summer due noise complaints local residents met residents administration field did noise-level tests decided aircraft too noisy could use field loss prompted investigation noise problem subsequent meeting same group demonstrated dramatic ally cut noise-emission levels residents agreed within confines 88 dBa would allowed use flying site again EditorAccompanying foregoing letter Joe Murray vice-president Radio Controlled Flying Club ronto Canada saying origi nally produced clubs news letter after about years study problem Later ran noise sym posium particlpation majority area clubs now general effort being made cut down overall noise levels has produced dramatic decrease number com plaints Joe pleased say writing advertisers mention read about Model Aviation WRAM Show/Myers Continued page 18 kinds products like see put forth Since talking about ducted fans might well take look example Nick Ziroli Models now offers kit F-4 RK-40 fan prototype flies well use 0S 46 ducted-fan engine Im sure would use Sullivan starter extension start en gine installation Curses foiled again Overall evaluation necessary nar row-band radios slowly beginning appear US manufacturers first answer call need offshore crowd now beginning follow suit Weve needed ever since new RC channels granted Im little puzzled delay introducing may idea 1991 receiver took some attention away fact 1991 right now far technical requirements concerned Safety Preston Continued page 24 Citabria passed safety inspection made very good friend Im suggesting friend deliberately overlooked things might otherwise have checked friends might assume things done right fact recently heard tale about qualifi cations inspectors models worth relating Although concerns incident club am mem ber wasnt field time following account related eyewitness beginner arrived field brand-new never-been-flown model club question has written check list such new models has designated certain members qualified inspectors occasion three qualified inspec tors spent about half hour scrutinizing model Apparently found noth ing out order model ap proved its first flight pilot flight clubs instructors After check engine operation instructor taxied out attempted takeoff model broke ground banked towards pit area whereupon pilot tried straighten out applying opposite aileron control increased bank towards pits model ended its short first flight striking trWsh can located rear pit area near fence separates pits Continued page 130 June1985127 SCALE RADIO CONTROL JLLOS Safety Preston Continued page 127 parking area Can guess what wrong postmortem discovered ailerons hooked up backwards Remem ber three qualified inspectors spent 30 minutes checking model missed builders error Perhaps case too cooks can spoil broth isnt sufficient just check correct control surface wiggles wiggle appropriate stick has wiggle right direction too WHEELS CONTROL-UNE FREE-FLIGHT 000 AGESMOOTHGOLDEN AGENEW sizes214CONTOURsizes214BALLOON 343/"23/4"3/ 13131/41321/341/3 1144/a11/433/411/443/a3451/4 11/3511/341411453 1/a65/a21451/41/a614 SCALE PILOTS CYUNDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND $1 FOR COMPLETE ILLUSTRATED CATALOG DEPT MA PAWNEE ST. SAN MAICOS CA 9 Human error source problems confined builders fliers models Sometimes manufacturing er ror can cause some grief Just last week received fourth recall notice 1978 automobile dont believe Ive ever heard recall concerning hobby product doesnt mean everything purchase local hobby store perfect few months ago received letter Paul Beretta modeler Glen Cove NY fol lowing Pauls own words experi ence manufacturing error want share incident other day Having pur chased new radio charged bat teries time test out airplane servos receiver switch harness already installed just few moments work hook up battery Since main purposes time servo-travel setup CG adjustment left battery unwrapped flipped switch receiver turned pick up transmitter turned back airplane smoke billowing top fuselage managed pull battery loose switch harness minor burns drop still smoking floor Investigation proved cause problem defective shorted switch result destruction switch harness receiver battery wiring battery case cells dont like think what could have happened battery foam-wrapped stuffed deep side nose plane wires glowing red like big glow plug although materials wires battery case merely melted smoked other materials inside plane may have behaved differently manufacturer kind cooperative about replacing damaged components So aside loss new toy week suffered no real loss can sure though future will check out electrical components outside aircraft before installation important thing aware tremendous heat-generat ing capacity short circuited Ni-Cds know until incident aware Pauls letter jogged memory about similar incident report read number years ago model er purchased new radio hobby store during journey home allegedly set fire station wagon time reaction Ho-Hum hes trying get new car out ra dio manufacturers insurance company Perhaps wrong another case short somewhere radios battery circuitry Anyway moral stories Paul did Always bench check new radio before installa tion model Nobody perfectnot hobby-equipment manufacturers Have safe month John Preton 12235 Tilden wood Dr Rockvile MD 20852 Rooster/Dickey Continued page 35 wing Balance model carefully point shown plans average lift centers aft center gravity After have balanced model dont change balance point trying chase trim prob Continued page 132 130 Model Aviation