S Cvnwslirsl Cross-country RC fly ing fliers view safety res pirators MEKP polyester resin hardeners John Preston WE HAD planned further discussion subject cross-country flying RC model aircraft However received sev eral letters subject during past month note February 1982 issue Model Aviation VP District IV Chuck Foreman has request comments future Trans-AmRallies Since appear alone questioning safety crosscountry flying thought should have benefit seeing letter presents other side coin letter comes Rick Helmke flew 1981 Trans-Am team Auburn Planesmen RC Club As participant 1981 Trans-Am Rally feel must take exception manner such events being treated AMA general John Preston particular Mr Preston printed letter July 1981 Safety Comes First column opposing crosscountry RC flying along public highways writer letter Paul Smith claims such activity endangers innocent bystanders such manner should undertaken reason goes say such activity could also endanger rights modelers fly country Mr Preston takes some what same position December column saying better ways bringing model aircraft public eye Im afraid both gentlemen have gone too far condemnation such activities has experience recent months flying moving vehicle entails relatively little danger compared other RC acti vities just little different Thanks co operation local police escort during local practice sessions rally Whenever potential conflict traffic developed either waited until things clear officer directed traffic away no time during practice rally did fly over densely populated areas practice sessions carried out rural areas situa tions tougher rally itself Any time during rally passed through town planes carried through Safety primary concern did Contest Directors instructed allow plane fly unless good flying condition something always observed local flying fields Pilots instructed sac rifice airplanes favor safety should situa tion require dont think pilot would have done otherwise necessary As equipment failures anyone using little sense plane radio top condition both rally practice sessions Mr Smith professes have over 20 years modeling ex perience says active competitor As such must realixe people participate events such Trans-Am Rally serious modelers competent safe pilots take great care ensure models perfect condition Both Mr Preston Mr Smith operate under erroneous assumption radio fails airplane will crash immediately last two radio failures witnessed plane flew across field crashed just behind pit area other wound up two miles away Neither aircraft seriously damaged Nevertheless radio link between plane pilot tenuous Mr Preston would have us believe radio failure along route loss servo As returned home reviewed route Rally took noticed very few homes towns along way entire route planned Bob Doris Rich avoid towns busy highways except interstates possible thought did excellent job As Mr Prestons contention better ways bring sport public eye cant think substantial media coverage Meridian MS probably have ever gotten locally have often felt attitudes shown Mr Preston Mr Smith prevalent early days RC would have come nearly far have No will disagree safety foremost concern model aviation like anything rapid stages development RC has witnessed must spirit adventure desire something new Mr Preston Mr Smith seem lacking both Cross-country flying can being done safe manner RC activity deserves much better treatment getting Instead eliminating activity need weed out making unsafe same true modeling activity Mr Smith worried abut being able keep flying needs look unsafe fliers because what make anything unsafe Its events safe unsafe Its people flyingthat bring about safety record have comments Ricks letter subject cross-country flying general still interested hearing Also might take time read Chuck Foremans column page 82 February issue let District VP know feelings Back November 1981 received letter Lee Lippert modelers Apple Valley MN will know runs Greenleaf Hobby Store Lee enclosed article subject respirators written local Soaring clubs newsletter dont Continued page 12 10 Model Aviation NOW HEAR THIS YOUR I1NNER IS GETTING COLD DU BRO HEAVY DUTY HINGES 000 D 3F 000 Removable Cotter Pin 000 Shown actual size 0 0 0strong nylon hinges built take heavy loads Dimen sions 3/4 wide x 1-3/8 long x 040 thick using 3/64 diameter cotter pin maximum convenience strength Ideal 1/4 scale models 15 Per Pkg 375No257 E-Z CON N ECTORS 96c Pr SNAP ON PEEN ON WE HAVE INCLUDED IN EVERY PACKAGE OF E-Z CONNECTORS 2 OF OUR NEW NYLON SNAP-ONS ESPECIALLY MADE TO HOLD TIGHT ON ANY SIZE CONTROL ARM THESE NEW SNAP-ONS CAN SAFELY BE USED OVER AND OVER AGAIN FOR THOSE OF YOU WHO STILL PREFER PERMANENT INSTALLATION JUST PEEN ON THEWASHER AS BEFORE YOUR CHOICECat No 121 THE FINAL FILTER ri ON LY 11/4 FILTERS IN EITHER DIRECTION ICLEAN BY BACK FLUSHING ultimate in-line fuel filter twice much fuel filtering capacity filters now available extremely fine 130 micron polyester screen filters out smallest particles yet because large filtering area does restrict fuel flow Proven 20% better wire screen equivalents classy looking aluminum filter should used between engine tank fuel can lineACTUAL SIZE CAT NO 162 ONLY $175- DU-BRO 20 FLEX-CABLE MOTOR CONTROL Provides ultimate control cable assembly Highly control horn flexible free running adjuslable KWIK SWITCH MOUNT 7/ simplest fastest easiest way mount battery switch complete switch mounting set enables install battery switch minutes anywhere fuselage drilling 3/16 hole! Excellent use planes helicopters boats cars Designed fit wall 0LPIQthickness up 3/8Cat No 203 - DU-BRO PRODUCTS INCORPORATED Bonner Road Wauconda Illinois 60084 U S already have respirator use spraying models may have allergy dust think following article Lee worth reading Sailplane addicts dont paint models much power fliers encounter some materials have caused severe problems dont use proper equipment chemicals include epoxies polyesters urethanes various thinners catalysts Common elements finishing products xylene naptha toluene toluol chemicals aromatic hydrocarbons generally considered low hazard value However recent incident came attention man died result using epoxy paint open air official cause death acute xylene poisoning As result incident search effective readily available light inexpensive mask made another organization Practical Sailor findings products made 3M Company specific models recommended follows 1 3M No 8709 Easi Spray Paint Respiratbi $795 plus tax simple inexpensive respira tor should give user adequate protection both organic vapors particles might encounter normal finishing work outdoors including protection spraying mask should last year provided kept sealed bag between uses should discarded user can detect odor taste vapor breathing through becomes difficult exhalation valve makes breathing through device easier through typical particle mask handy respirator designed painters comfortable enough wear neither discomfort nor inconvenience should become excuse wearing respira tor affixed dual adjustable elastic bands flexible metal stiffener over nose permits bending close fit 2 3M No 8741 Spray Paint Respirator As sembly $1300 plus tax two-part res pirator-filter NIOSH/MSHA approved use paints give off organic vapors well protection mists dusts active respirant material charcoal respirator body semi-rigid plastic attaches double adjustable elastic straps moderately comfortable wear takes some getting used However what device intended should serious drawback Goggles and/or glasses fit easily above respirator gives warning high concentrations vapors allowing user smell long device lasts depends upon breath ing rate vapor concentration vapors can smelled first sign irritation respirator saturated replaceable cart ridge should changed mask recom mended anyone working polyurethane coatings polyester epoxy resings well hydrocarbons whenever concentration vapors substances could rise level could cause discomfort possible toxic reactions including use confined area 3 3M No 9920 Dust/Fume/Mist Respirator $290 plus tax mask similar appear ance No 8709 designed use spray painting recommended sensitive dusts other particulates may encounter during model building Again mask designed give protection paint thinners prices quoted masks current November 11981 given oureconomic conditions subject change Continued page 68 12 Model Aviation Kawasaki Homers Smooth One. nfl222C1D Sale $17995 315 CID Sale $19499 Comes 6-bolt hub built-in choke Twin stack mount optional Like Quadra Opttanal twin-stack esIllar Swain 5mm enailahln Snh esrains nnailahl Dashs na pins. high. nesnpranniss & Inaja Ill Optinsal nhks Easy hand starting Spanial nlens-naaplndhigh-tsnnisn nyntsn inns RI nadiatiss Solid-baa. typs wane win ap tinsal radial sappnutnanait Rollnr tlennt-hainm nnnleninaly wan wndsl airaralt nwar-halannnd a...n fivehasi 37 SUPER POWER ROPER 22 QUADRA ENGINE 19 ROPER ENGINE NEW Sele Leer 79 ENGINE NUB N MOUNT PACK 79 USEO DEMO ENGINE BALENCED 6-BOLT NUB Rope Pm. N Oudre PROP DRILL JIG dLight weight metal construction Low cost parts A11 versions fully aerobatic AMA/FAI patterns QsisI knnssl ers mai ~g tail drives New H S Hornet CID 6 1/3 HP Only 6 1/4 lbs So compact measures much larger Quadra Partner engine Comes complete built-in choke 6-bolt prop hub Radial mount twin stack available List $28995 INTRO $19995 SALE 7255 7200 2455 7995 500 1555 755 250 Youll Love Partner An updated versron thrs popular engine Note improve ments made especially mini ature aircraft use roller thrust bearing double-ring pistom location low 13 1/2 power output LIMITED TIME OFFER LIsT $14995 SALE $8995 ptiasal hrita npinnnr starts nerd grant Haney-daly prep Itoh MORE HORNER SPECIALS PART RETAIL SALE 112 $249 55 $799 00 RADIAL MOUNTReper 37 N 19 103 RADIAL MOUNT Pert. 123 TWIN STACK EXHAUST 37 N Kierine105 109 12500 $9995 TWIN STACK EXHAUST Parr,, Qtdt 720 CHOKE ASSEMBLy Pm. N Quad 721 70955003955BRITE SPINNER Rep Pert N Quad722 779 5500 NEOPRENE GAS LINE Per Feeg 707 770 2500 RESISTORSPARKPLUGRCJ-B 713 BIG PROPS AVAILABLE Fetiehed e,d BeIetred Weed 7077455 702595 Write CALL Safety Preston Continued page 12 Lee sent us article enclosed 3M bulletins describe respirators describing No 8709 noted following statement preceded word IM PORTANT 3M Brand Easi-Air Paint Respir ator No 8709 designed protection against airborne concentrations paints coatings containing two-tenths part per million 02ppm free isocyanate spray Areas should adequately ventilated contain ing least 195% oxygen Respirator must worn atmospheric concentrations contaminants unknown immediately dan gerous life health use individuals have known respiratory problems have ever reaction isocyanates~ wrote 3M asked recom mendation respirator use spraying I paints containing polyisocyanates telephone response learned No 8709 may used such purposes spray area well ventilated So aware addition wearing respirator must use paints containing isocyanate curing agents room effective exhaust fanor outdoors can Also aware spraying operation finished harmful vapors will continue present paint curing recently attended meeting pre sentation finishing models given Dave Pearce well known North Carolina modeler After spraying color coats adding trim Dave uses clear final coat containing iso cyanate curing agents After experiencing flulike symptoms breathing problems stemmed being present room model after sprayed final coating Dave now uses spare bathroom equipped exhaust fan drying room final note 3M respirators No 8709 model available through industrial safety equipment distributors also sold through auto parts stores model No 6986 hardware stores known model No 8655 January 1982 safety column printed letter received Jack Kinney stated peroxide level MEKP hardener used polyester resin lowered appar ently government regulation protect user stated puzzled Jacks statement because could find regula tion further letter Jack produced industry source check turns out Department Transportation regulation set November 20 1980 official date whereby will illegal transport MEK peroxide exceeding 9% active oxygen Suppliers MEK peroxides have no control over ruling will required comply thank Jack information would suggest check instructions using recently-purchased polyester resin hardener rather relying past experience correct amounts use Jacks industry source Pennwalt Corporation bulletin dated July 1980 say users its products other formulation use conditions unchanged about 20-25% 9%-active-oxygen MEK peroxide ie Lupersol DDM-9 will required yield equivalent gel/cure times obtained now familiar 11% active oxygen material Despite its reduction strength still urge Continued page 73 0 New Expandable concept RIC Helicopters o The Competitor will fly 45 50 060 size engines l can take novice flying winning AMA expert class Advanced design features never before seen R/C Helicopter Triple ball bearings main tail rotor hubs Autorotation standard eControls designed inverted flight love 24 w/ optional choke SALE $17995 Seed 20L Stamp fur CatalogWill Shp Orders Same Oay cOoupsAdd 54 shipping per engine HORNER SALES INC Rt2Box93000ixieHwy.312946-2515 68 Model Aviation TOLEDO/82 TWENTY EIGHTH ANNUAL R/C EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 2 3 4 1982 attend WORLDS GREATEST RADIO CONTROL MODEL SHOW fea turing worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely finished models display enter competition ex citing awards Complete n/c systems will awarded first second third place winners new COLOR TELEVISION will presented lucky winner Best Show Open public three great days presented WEAK SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43613 APRIL 23&4 FRIDAY 9am 6pm SATURDAY 9am 6pm SUNDAY9am 430pm W4c3 extremely cautious using MEKP can still cause blindness contact eye occurs column being written New Years Day will read late February early March Let us remind RCers havent already done now would good time have radios serviced before contest season upon us Maybe working OK hung up last year maybe wont work well today An ounce prevention worth pound cure Have safe month John Preston 7012 Elvira Court Falls Church VA 22042 Fun/Winter Continued paqe 18 ballast Raves DeBolt rotates wing stab angles incorporate downthnist dont see works better ordinary downthrust dont know Hal did first Live Wire about 1950 Air Scout Concept found fast groovy beautifully coordinated Mike loves An Owen Kampen design has taken over Concept Ace 15 takes 7-in diameter prop flies far nicer 8-4 three-channel joy youve stick time Srull still flying Flitecraft CardinaL Moves out like Kavalier ailerons 35 So smooth problems vanish provided have gone beyond Primary fascinated Flitecrafts boxy 29 trainer three channels Looks different high cabin stumpy Its some what-Scale Polish Wilga have soloed youll love step up Asked beginnerwho doing wellif might fly find yourself tooling around rudder banking unbanking rudder aileron Would love have fun flying speed Highly impressed Airtronics Q-Tee Until now weve seen flown TDs huge thrust offsets right down guys zooming over joint fighting wind crate going like rocket-kite So along came beginner young couple first crate never flown birthday gift flew big Christmas judge didnt fly Christmas would aeronautical instructors helped put up Quite beautiful glide went forevertwo 360s over fence happy couple jumped up down mad delight Things like get Bill Winter 4426 Altura Ct Fairfax VA 22030 Neutron Star/Gilgenbach Continued page 27 bearings snug shaft keeping shaft parallel wing saddle confi dent shaft aligned properly Super Jet bearings fuselage being careful stick bearings shaft little Vaseline shaft will help prevent Scrape inside bearings allow easy rotation shaft excessive play Install bottom engine tank com partments Cut out engine cooling passages fuel proof both compartments Hobby poxy Formula 2 Install remaining bottom fuselage cluding sub-fin fit two hatches Continued page 95 STERLING MODEL Priced Right 821 Ibi1 Srr Radio Control Control Line 1525 Engine 1 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power Penny Pincher Gliders HiHellcat H2Mustang H3Piper Cub H4Cessna 180 H5Sabre Jet H6T38A Thunderbird Wingspan 13 Price $198 Full Color Covering inclu ded Handsomely detailed just like real airplanes Youll Fly Everyday Just put 2 nose weight Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Address City StateZip April 1982 73 lxii Wingspan 40-5/16 Scale 2-1/8 ice $4595 For
Edition: Model Aviation - 1982/04
Page Numbers: 10, 12, 68, 73
S Cvnwslirsl Cross-country RC fly ing fliers view safety res pirators MEKP polyester resin hardeners John Preston WE HAD planned further discussion subject cross-country flying RC model aircraft However received sev eral letters subject during past month note February 1982 issue Model Aviation VP District IV Chuck Foreman has request comments future Trans-AmRallies Since appear alone questioning safety crosscountry flying thought should have benefit seeing letter presents other side coin letter comes Rick Helmke flew 1981 Trans-Am team Auburn Planesmen RC Club As participant 1981 Trans-Am Rally feel must take exception manner such events being treated AMA general John Preston particular Mr Preston printed letter July 1981 Safety Comes First column opposing crosscountry RC flying along public highways writer letter Paul Smith claims such activity endangers innocent bystanders such manner should undertaken reason goes say such activity could also endanger rights modelers fly country Mr Preston takes some what same position December column saying better ways bringing model aircraft public eye Im afraid both gentlemen have gone too far condemnation such activities has experience recent months flying moving vehicle entails relatively little danger compared other RC acti vities just little different Thanks co operation local police escort during local practice sessions rally Whenever potential conflict traffic developed either waited until things clear officer directed traffic away no time during practice rally did fly over densely populated areas practice sessions carried out rural areas situa tions tougher rally itself Any time during rally passed through town planes carried through Safety primary concern did Contest Directors instructed allow plane fly unless good flying condition something always observed local flying fields Pilots instructed sac rifice airplanes favor safety should situa tion require dont think pilot would have done otherwise necessary As equipment failures anyone using little sense plane radio top condition both rally practice sessions Mr Smith professes have over 20 years modeling ex perience says active competitor As such must realixe people participate events such Trans-Am Rally serious modelers competent safe pilots take great care ensure models perfect condition Both Mr Preston Mr Smith operate under erroneous assumption radio fails airplane will crash immediately last two radio failures witnessed plane flew across field crashed just behind pit area other wound up two miles away Neither aircraft seriously damaged Nevertheless radio link between plane pilot tenuous Mr Preston would have us believe radio failure along route loss servo As returned home reviewed route Rally took noticed very few homes towns along way entire route planned Bob Doris Rich avoid towns busy highways except interstates possible thought did excellent job As Mr Prestons contention better ways bring sport public eye cant think substantial media coverage Meridian MS probably have ever gotten locally have often felt attitudes shown Mr Preston Mr Smith prevalent early days RC would have come nearly far have No will disagree safety foremost concern model aviation like anything rapid stages development RC has witnessed must spirit adventure desire something new Mr Preston Mr Smith seem lacking both Cross-country flying can being done safe manner RC activity deserves much better treatment getting Instead eliminating activity need weed out making unsafe same true modeling activity Mr Smith worried abut being able keep flying needs look unsafe fliers because what make anything unsafe Its events safe unsafe Its people flyingthat bring about safety record have comments Ricks letter subject cross-country flying general still interested hearing Also might take time read Chuck Foremans column page 82 February issue let District VP know feelings Back November 1981 received letter Lee Lippert modelers Apple Valley MN will know runs Greenleaf Hobby Store Lee enclosed article subject respirators written local Soaring clubs newsletter dont Continued page 12 10 Model Aviation NOW HEAR THIS YOUR I1NNER IS GETTING COLD DU BRO HEAVY DUTY HINGES 000 D 3F 000 Removable Cotter Pin 000 Shown actual size 0 0 0strong nylon hinges built take heavy loads Dimen sions 3/4 wide x 1-3/8 long x 040 thick using 3/64 diameter cotter pin maximum convenience strength Ideal 1/4 scale models 15 Per Pkg 375No257 E-Z CON N ECTORS 96c Pr SNAP ON PEEN ON WE HAVE INCLUDED IN EVERY PACKAGE OF E-Z CONNECTORS 2 OF OUR NEW NYLON SNAP-ONS ESPECIALLY MADE TO HOLD TIGHT ON ANY SIZE CONTROL ARM THESE NEW SNAP-ONS CAN SAFELY BE USED OVER AND OVER AGAIN FOR THOSE OF YOU WHO STILL PREFER PERMANENT INSTALLATION JUST PEEN ON THEWASHER AS BEFORE YOUR CHOICECat No 121 THE FINAL FILTER ri ON LY 11/4 FILTERS IN EITHER DIRECTION ICLEAN BY BACK FLUSHING ultimate in-line fuel filter twice much fuel filtering capacity filters now available extremely fine 130 micron polyester screen filters out smallest particles yet because large filtering area does restrict fuel flow Proven 20% better wire screen equivalents classy looking aluminum filter should used between engine tank fuel can lineACTUAL SIZE CAT NO 162 ONLY $175- DU-BRO 20 FLEX-CABLE MOTOR CONTROL Provides ultimate control cable assembly Highly control horn flexible free running adjuslable KWIK SWITCH MOUNT 7/ simplest fastest easiest way mount battery switch complete switch mounting set enables install battery switch minutes anywhere fuselage drilling 3/16 hole! Excellent use planes helicopters boats cars Designed fit wall 0LPIQthickness up 3/8Cat No 203 - DU-BRO PRODUCTS INCORPORATED Bonner Road Wauconda Illinois 60084 U S already have respirator use spraying models may have allergy dust think following article Lee worth reading Sailplane addicts dont paint models much power fliers encounter some materials have caused severe problems dont use proper equipment chemicals include epoxies polyesters urethanes various thinners catalysts Common elements finishing products xylene naptha toluene toluol chemicals aromatic hydrocarbons generally considered low hazard value However recent incident came attention man died result using epoxy paint open air official cause death acute xylene poisoning As result incident search effective readily available light inexpensive mask made another organization Practical Sailor findings products made 3M Company specific models recommended follows 1 3M No 8709 Easi Spray Paint Respiratbi $795 plus tax simple inexpensive respira tor should give user adequate protection both organic vapors particles might encounter normal finishing work outdoors including protection spraying mask should last year provided kept sealed bag between uses should discarded user can detect odor taste vapor breathing through becomes difficult exhalation valve makes breathing through device easier through typical particle mask handy respirator designed painters comfortable enough wear neither discomfort nor inconvenience should become excuse wearing respira tor affixed dual adjustable elastic bands flexible metal stiffener over nose permits bending close fit 2 3M No 8741 Spray Paint Respirator As sembly $1300 plus tax two-part res pirator-filter NIOSH/MSHA approved use paints give off organic vapors well protection mists dusts active respirant material charcoal respirator body semi-rigid plastic attaches double adjustable elastic straps moderately comfortable wear takes some getting used However what device intended should serious drawback Goggles and/or glasses fit easily above respirator gives warning high concentrations vapors allowing user smell long device lasts depends upon breath ing rate vapor concentration vapors can smelled first sign irritation respirator saturated replaceable cart ridge should changed mask recom mended anyone working polyurethane coatings polyester epoxy resings well hydrocarbons whenever concentration vapors substances could rise level could cause discomfort possible toxic reactions including use confined area 3 3M No 9920 Dust/Fume/Mist Respirator $290 plus tax mask similar appear ance No 8709 designed use spray painting recommended sensitive dusts other particulates may encounter during model building Again mask designed give protection paint thinners prices quoted masks current November 11981 given oureconomic conditions subject change Continued page 68 12 Model Aviation Kawasaki Homers Smooth One. nfl222C1D Sale $17995 315 CID Sale $19499 Comes 6-bolt hub built-in choke Twin stack mount optional Like Quadra Opttanal twin-stack esIllar Swain 5mm enailahln Snh esrains nnailahl Dashs na pins. high. nesnpranniss & Inaja Ill Optinsal nhks Easy hand starting Spanial nlens-naaplndhigh-tsnnisn nyntsn inns RI nadiatiss Solid-baa. typs wane win ap tinsal radial sappnutnanait Rollnr tlennt-hainm nnnleninaly wan wndsl airaralt nwar-halannnd a...n fivehasi 37 SUPER POWER ROPER 22 QUADRA ENGINE 19 ROPER ENGINE NEW Sele Leer 79 ENGINE NUB N MOUNT PACK 79 USEO DEMO ENGINE BALENCED 6-BOLT NUB Rope Pm. N Oudre PROP DRILL JIG dLight weight metal construction Low cost parts A11 versions fully aerobatic AMA/FAI patterns QsisI knnssl ers mai ~g tail drives New H S Hornet CID 6 1/3 HP Only 6 1/4 lbs So compact measures much larger Quadra Partner engine Comes complete built-in choke 6-bolt prop hub Radial mount twin stack available List $28995 INTRO $19995 SALE 7255 7200 2455 7995 500 1555 755 250 Youll Love Partner An updated versron thrs popular engine Note improve ments made especially mini ature aircraft use roller thrust bearing double-ring pistom location low 13 1/2 power output LIMITED TIME OFFER LIsT $14995 SALE $8995 ptiasal hrita npinnnr starts nerd grant Haney-daly prep Itoh MORE HORNER SPECIALS PART RETAIL SALE 112 $249 55 $799 00 RADIAL MOUNTReper 37 N 19 103 RADIAL MOUNT Pert. 123 TWIN STACK EXHAUST 37 N Kierine105 109 12500 $9995 TWIN STACK EXHAUST Parr,, Qtdt 720 CHOKE ASSEMBLy Pm. N Quad 721 70955003955BRITE SPINNER Rep Pert N Quad722 779 5500 NEOPRENE GAS LINE Per Feeg 707 770 2500 RESISTORSPARKPLUGRCJ-B 713 BIG PROPS AVAILABLE Fetiehed e,d BeIetred Weed 7077455 702595 Write CALL Safety Preston Continued page 12 Lee sent us article enclosed 3M bulletins describe respirators describing No 8709 noted following statement preceded word IM PORTANT 3M Brand Easi-Air Paint Respir ator No 8709 designed protection against airborne concentrations paints coatings containing two-tenths part per million 02ppm free isocyanate spray Areas should adequately ventilated contain ing least 195% oxygen Respirator must worn atmospheric concentrations contaminants unknown immediately dan gerous life health use individuals have known respiratory problems have ever reaction isocyanates~ wrote 3M asked recom mendation respirator use spraying I paints containing polyisocyanates telephone response learned No 8709 may used such purposes spray area well ventilated So aware addition wearing respirator must use paints containing isocyanate curing agents room effective exhaust fanor outdoors can Also aware spraying operation finished harmful vapors will continue present paint curing recently attended meeting pre sentation finishing models given Dave Pearce well known North Carolina modeler After spraying color coats adding trim Dave uses clear final coat containing iso cyanate curing agents After experiencing flulike symptoms breathing problems stemmed being present room model after sprayed final coating Dave now uses spare bathroom equipped exhaust fan drying room final note 3M respirators No 8709 model available through industrial safety equipment distributors also sold through auto parts stores model No 6986 hardware stores known model No 8655 January 1982 safety column printed letter received Jack Kinney stated peroxide level MEKP hardener used polyester resin lowered appar ently government regulation protect user stated puzzled Jacks statement because could find regula tion further letter Jack produced industry source check turns out Department Transportation regulation set November 20 1980 official date whereby will illegal transport MEK peroxide exceeding 9% active oxygen Suppliers MEK peroxides have no control over ruling will required comply thank Jack information would suggest check instructions using recently-purchased polyester resin hardener rather relying past experience correct amounts use Jacks industry source Pennwalt Corporation bulletin dated July 1980 say users its products other formulation use conditions unchanged about 20-25% 9%-active-oxygen MEK peroxide ie Lupersol DDM-9 will required yield equivalent gel/cure times obtained now familiar 11% active oxygen material Despite its reduction strength still urge Continued page 73 0 New Expandable concept RIC Helicopters o The Competitor will fly 45 50 060 size engines l can take novice flying winning AMA expert class Advanced design features never before seen R/C Helicopter Triple ball bearings main tail rotor hubs Autorotation standard eControls designed inverted flight love 24 w/ optional choke SALE $17995 Seed 20L Stamp fur CatalogWill Shp Orders Same Oay cOoupsAdd 54 shipping per engine HORNER SALES INC Rt2Box93000ixieHwy.312946-2515 68 Model Aviation TOLEDO/82 TWENTY EIGHTH ANNUAL R/C EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 2 3 4 1982 attend WORLDS GREATEST RADIO CONTROL MODEL SHOW fea turing worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely finished models display enter competition ex citing awards Complete n/c systems will awarded first second third place winners new COLOR TELEVISION will presented lucky winner Best Show Open public three great days presented WEAK SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43613 APRIL 23&4 FRIDAY 9am 6pm SATURDAY 9am 6pm SUNDAY9am 430pm W4c3 extremely cautious using MEKP can still cause blindness contact eye occurs column being written New Years Day will read late February early March Let us remind RCers havent already done now would good time have radios serviced before contest season upon us Maybe working OK hung up last year maybe wont work well today An ounce prevention worth pound cure Have safe month John Preston 7012 Elvira Court Falls Church VA 22042 Fun/Winter Continued paqe 18 ballast Raves DeBolt rotates wing stab angles incorporate downthnist dont see works better ordinary downthrust dont know Hal did first Live Wire about 1950 Air Scout Concept found fast groovy beautifully coordinated Mike loves An Owen Kampen design has taken over Concept Ace 15 takes 7-in diameter prop flies far nicer 8-4 three-channel joy youve stick time Srull still flying Flitecraft CardinaL Moves out like Kavalier ailerons 35 So smooth problems vanish provided have gone beyond Primary fascinated Flitecrafts boxy 29 trainer three channels Looks different high cabin stumpy Its some what-Scale Polish Wilga have soloed youll love step up Asked beginnerwho doing wellif might fly find yourself tooling around rudder banking unbanking rudder aileron Would love have fun flying speed Highly impressed Airtronics Q-Tee Until now weve seen flown TDs huge thrust offsets right down guys zooming over joint fighting wind crate going like rocket-kite So along came beginner young couple first crate never flown birthday gift flew big Christmas judge didnt fly Christmas would aeronautical instructors helped put up Quite beautiful glide went forevertwo 360s over fence happy couple jumped up down mad delight Things like get Bill Winter 4426 Altura Ct Fairfax VA 22030 Neutron Star/Gilgenbach Continued page 27 bearings snug shaft keeping shaft parallel wing saddle confi dent shaft aligned properly Super Jet bearings fuselage being careful stick bearings shaft little Vaseline shaft will help prevent Scrape inside bearings allow easy rotation shaft excessive play Install bottom engine tank com partments Cut out engine cooling passages fuel proof both compartments Hobby poxy Formula 2 Install remaining bottom fuselage cluding sub-fin fit two hatches Continued page 95 STERLING MODEL Priced Right 821 Ibi1 Srr Radio Control Control Line 1525 Engine 1 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power Penny Pincher Gliders HiHellcat H2Mustang H3Piper Cub H4Cessna 180 H5Sabre Jet H6T38A Thunderbird Wingspan 13 Price $198 Full Color Covering inclu ded Handsomely detailed just like real airplanes Youll Fly Everyday Just put 2 nose weight Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Address City StateZip April 1982 73 lxii Wingspan 40-5/16 Scale 2-1/8 ice $4595 For
Edition: Model Aviation - 1982/04
Page Numbers: 10, 12, 68, 73
S Cvnwslirsl Cross-country RC fly ing fliers view safety res pirators MEKP polyester resin hardeners John Preston WE HAD planned further discussion subject cross-country flying RC model aircraft However received sev eral letters subject during past month note February 1982 issue Model Aviation VP District IV Chuck Foreman has request comments future Trans-AmRallies Since appear alone questioning safety crosscountry flying thought should have benefit seeing letter presents other side coin letter comes Rick Helmke flew 1981 Trans-Am team Auburn Planesmen RC Club As participant 1981 Trans-Am Rally feel must take exception manner such events being treated AMA general John Preston particular Mr Preston printed letter July 1981 Safety Comes First column opposing crosscountry RC flying along public highways writer letter Paul Smith claims such activity endangers innocent bystanders such manner should undertaken reason goes say such activity could also endanger rights modelers fly country Mr Preston takes some what same position December column saying better ways bringing model aircraft public eye Im afraid both gentlemen have gone too far condemnation such activities has experience recent months flying moving vehicle entails relatively little danger compared other RC acti vities just little different Thanks co operation local police escort during local practice sessions rally Whenever potential conflict traffic developed either waited until things clear officer directed traffic away no time during practice rally did fly over densely populated areas practice sessions carried out rural areas situa tions tougher rally itself Any time during rally passed through town planes carried through Safety primary concern did Contest Directors instructed allow plane fly unless good flying condition something always observed local flying fields Pilots instructed sac rifice airplanes favor safety should situa tion require dont think pilot would have done otherwise necessary As equipment failures anyone using little sense plane radio top condition both rally practice sessions Mr Smith professes have over 20 years modeling ex perience says active competitor As such must realixe people participate events such Trans-Am Rally serious modelers competent safe pilots take great care ensure models perfect condition Both Mr Preston Mr Smith operate under erroneous assumption radio fails airplane will crash immediately last two radio failures witnessed plane flew across field crashed just behind pit area other wound up two miles away Neither aircraft seriously damaged Nevertheless radio link between plane pilot tenuous Mr Preston would have us believe radio failure along route loss servo As returned home reviewed route Rally took noticed very few homes towns along way entire route planned Bob Doris Rich avoid towns busy highways except interstates possible thought did excellent job As Mr Prestons contention better ways bring sport public eye cant think substantial media coverage Meridian MS probably have ever gotten locally have often felt attitudes shown Mr Preston Mr Smith prevalent early days RC would have come nearly far have No will disagree safety foremost concern model aviation like anything rapid stages development RC has witnessed must spirit adventure desire something new Mr Preston Mr Smith seem lacking both Cross-country flying can being done safe manner RC activity deserves much better treatment getting Instead eliminating activity need weed out making unsafe same true modeling activity Mr Smith worried abut being able keep flying needs look unsafe fliers because what make anything unsafe Its events safe unsafe Its people flyingthat bring about safety record have comments Ricks letter subject cross-country flying general still interested hearing Also might take time read Chuck Foremans column page 82 February issue let District VP know feelings Back November 1981 received letter Lee Lippert modelers Apple Valley MN will know runs Greenleaf Hobby Store Lee enclosed article subject respirators written local Soaring clubs newsletter dont Continued page 12 10 Model Aviation NOW HEAR THIS YOUR I1NNER IS GETTING COLD DU BRO HEAVY DUTY HINGES 000 D 3F 000 Removable Cotter Pin 000 Shown actual size 0 0 0strong nylon hinges built take heavy loads Dimen sions 3/4 wide x 1-3/8 long x 040 thick using 3/64 diameter cotter pin maximum convenience strength Ideal 1/4 scale models 15 Per Pkg 375No257 E-Z CON N ECTORS 96c Pr SNAP ON PEEN ON WE HAVE INCLUDED IN EVERY PACKAGE OF E-Z CONNECTORS 2 OF OUR NEW NYLON SNAP-ONS ESPECIALLY MADE TO HOLD TIGHT ON ANY SIZE CONTROL ARM THESE NEW SNAP-ONS CAN SAFELY BE USED OVER AND OVER AGAIN FOR THOSE OF YOU WHO STILL PREFER PERMANENT INSTALLATION JUST PEEN ON THEWASHER AS BEFORE YOUR CHOICECat No 121 THE FINAL FILTER ri ON LY 11/4 FILTERS IN EITHER DIRECTION ICLEAN BY BACK FLUSHING ultimate in-line fuel filter twice much fuel filtering capacity filters now available extremely fine 130 micron polyester screen filters out smallest particles yet because large filtering area does restrict fuel flow Proven 20% better wire screen equivalents classy looking aluminum filter should used between engine tank fuel can lineACTUAL SIZE CAT NO 162 ONLY $175- DU-BRO 20 FLEX-CABLE MOTOR CONTROL Provides ultimate control cable assembly Highly control horn flexible free running adjuslable KWIK SWITCH MOUNT 7/ simplest fastest easiest way mount battery switch complete switch mounting set enables install battery switch minutes anywhere fuselage drilling 3/16 hole! Excellent use planes helicopters boats cars Designed fit wall 0LPIQthickness up 3/8Cat No 203 - DU-BRO PRODUCTS INCORPORATED Bonner Road Wauconda Illinois 60084 U S already have respirator use spraying models may have allergy dust think following article Lee worth reading Sailplane addicts dont paint models much power fliers encounter some materials have caused severe problems dont use proper equipment chemicals include epoxies polyesters urethanes various thinners catalysts Common elements finishing products xylene naptha toluene toluol chemicals aromatic hydrocarbons generally considered low hazard value However recent incident came attention man died result using epoxy paint open air official cause death acute xylene poisoning As result incident search effective readily available light inexpensive mask made another organization Practical Sailor findings products made 3M Company specific models recommended follows 1 3M No 8709 Easi Spray Paint Respiratbi $795 plus tax simple inexpensive respira tor should give user adequate protection both organic vapors particles might encounter normal finishing work outdoors including protection spraying mask should last year provided kept sealed bag between uses should discarded user can detect odor taste vapor breathing through becomes difficult exhalation valve makes breathing through device easier through typical particle mask handy respirator designed painters comfortable enough wear neither discomfort nor inconvenience should become excuse wearing respira tor affixed dual adjustable elastic bands flexible metal stiffener over nose permits bending close fit 2 3M No 8741 Spray Paint Respirator As sembly $1300 plus tax two-part res pirator-filter NIOSH/MSHA approved use paints give off organic vapors well protection mists dusts active respirant material charcoal respirator body semi-rigid plastic attaches double adjustable elastic straps moderately comfortable wear takes some getting used However what device intended should serious drawback Goggles and/or glasses fit easily above respirator gives warning high concentrations vapors allowing user smell long device lasts depends upon breath ing rate vapor concentration vapors can smelled first sign irritation respirator saturated replaceable cart ridge should changed mask recom mended anyone working polyurethane coatings polyester epoxy resings well hydrocarbons whenever concentration vapors substances could rise level could cause discomfort possible toxic reactions including use confined area 3 3M No 9920 Dust/Fume/Mist Respirator $290 plus tax mask similar appear ance No 8709 designed use spray painting recommended sensitive dusts other particulates may encounter during model building Again mask designed give protection paint thinners prices quoted masks current November 11981 given oureconomic conditions subject change Continued page 68 12 Model Aviation Kawasaki Homers Smooth One. nfl222C1D Sale $17995 315 CID Sale $19499 Comes 6-bolt hub built-in choke Twin stack mount optional Like Quadra Opttanal twin-stack esIllar Swain 5mm enailahln Snh esrains nnailahl Dashs na pins. high. nesnpranniss & Inaja Ill Optinsal nhks Easy hand starting Spanial nlens-naaplndhigh-tsnnisn nyntsn inns RI nadiatiss Solid-baa. typs wane win ap tinsal radial sappnutnanait Rollnr tlennt-hainm nnnleninaly wan wndsl airaralt nwar-halannnd a...n fivehasi 37 SUPER POWER ROPER 22 QUADRA ENGINE 19 ROPER ENGINE NEW Sele Leer 79 ENGINE NUB N MOUNT PACK 79 USEO DEMO ENGINE BALENCED 6-BOLT NUB Rope Pm. N Oudre PROP DRILL JIG dLight weight metal construction Low cost parts A11 versions fully aerobatic AMA/FAI patterns QsisI knnssl ers mai ~g tail drives New H S Hornet CID 6 1/3 HP Only 6 1/4 lbs So compact measures much larger Quadra Partner engine Comes complete built-in choke 6-bolt prop hub Radial mount twin stack available List $28995 INTRO $19995 SALE 7255 7200 2455 7995 500 1555 755 250 Youll Love Partner An updated versron thrs popular engine Note improve ments made especially mini ature aircraft use roller thrust bearing double-ring pistom location low 13 1/2 power output LIMITED TIME OFFER LIsT $14995 SALE $8995 ptiasal hrita npinnnr starts nerd grant Haney-daly prep Itoh MORE HORNER SPECIALS PART RETAIL SALE 112 $249 55 $799 00 RADIAL MOUNTReper 37 N 19 103 RADIAL MOUNT Pert. 123 TWIN STACK EXHAUST 37 N Kierine105 109 12500 $9995 TWIN STACK EXHAUST Parr,, Qtdt 720 CHOKE ASSEMBLy Pm. N Quad 721 70955003955BRITE SPINNER Rep Pert N Quad722 779 5500 NEOPRENE GAS LINE Per Feeg 707 770 2500 RESISTORSPARKPLUGRCJ-B 713 BIG PROPS AVAILABLE Fetiehed e,d BeIetred Weed 7077455 702595 Write CALL Safety Preston Continued page 12 Lee sent us article enclosed 3M bulletins describe respirators describing No 8709 noted following statement preceded word IM PORTANT 3M Brand Easi-Air Paint Respir ator No 8709 designed protection against airborne concentrations paints coatings containing two-tenths part per million 02ppm free isocyanate spray Areas should adequately ventilated contain ing least 195% oxygen Respirator must worn atmospheric concentrations contaminants unknown immediately dan gerous life health use individuals have known respiratory problems have ever reaction isocyanates~ wrote 3M asked recom mendation respirator use spraying I paints containing polyisocyanates telephone response learned No 8709 may used such purposes spray area well ventilated So aware addition wearing respirator must use paints containing isocyanate curing agents room effective exhaust fanor outdoors can Also aware spraying operation finished harmful vapors will continue present paint curing recently attended meeting pre sentation finishing models given Dave Pearce well known North Carolina modeler After spraying color coats adding trim Dave uses clear final coat containing iso cyanate curing agents After experiencing flulike symptoms breathing problems stemmed being present room model after sprayed final coating Dave now uses spare bathroom equipped exhaust fan drying room final note 3M respirators No 8709 model available through industrial safety equipment distributors also sold through auto parts stores model No 6986 hardware stores known model No 8655 January 1982 safety column printed letter received Jack Kinney stated peroxide level MEKP hardener used polyester resin lowered appar ently government regulation protect user stated puzzled Jacks statement because could find regula tion further letter Jack produced industry source check turns out Department Transportation regulation set November 20 1980 official date whereby will illegal transport MEK peroxide exceeding 9% active oxygen Suppliers MEK peroxides have no control over ruling will required comply thank Jack information would suggest check instructions using recently-purchased polyester resin hardener rather relying past experience correct amounts use Jacks industry source Pennwalt Corporation bulletin dated July 1980 say users its products other formulation use conditions unchanged about 20-25% 9%-active-oxygen MEK peroxide ie Lupersol DDM-9 will required yield equivalent gel/cure times obtained now familiar 11% active oxygen material Despite its reduction strength still urge Continued page 73 0 New Expandable concept RIC Helicopters o The Competitor will fly 45 50 060 size engines l can take novice flying winning AMA expert class Advanced design features never before seen R/C Helicopter Triple ball bearings main tail rotor hubs Autorotation standard eControls designed inverted flight love 24 w/ optional choke SALE $17995 Seed 20L Stamp fur CatalogWill Shp Orders Same Oay cOoupsAdd 54 shipping per engine HORNER SALES INC Rt2Box93000ixieHwy.312946-2515 68 Model Aviation TOLEDO/82 TWENTY EIGHTH ANNUAL R/C EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 2 3 4 1982 attend WORLDS GREATEST RADIO CONTROL MODEL SHOW fea turing worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely finished models display enter competition ex citing awards Complete n/c systems will awarded first second third place winners new COLOR TELEVISION will presented lucky winner Best Show Open public three great days presented WEAK SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43613 APRIL 23&4 FRIDAY 9am 6pm SATURDAY 9am 6pm SUNDAY9am 430pm W4c3 extremely cautious using MEKP can still cause blindness contact eye occurs column being written New Years Day will read late February early March Let us remind RCers havent already done now would good time have radios serviced before contest season upon us Maybe working OK hung up last year maybe wont work well today An ounce prevention worth pound cure Have safe month John Preston 7012 Elvira Court Falls Church VA 22042 Fun/Winter Continued paqe 18 ballast Raves DeBolt rotates wing stab angles incorporate downthnist dont see works better ordinary downthrust dont know Hal did first Live Wire about 1950 Air Scout Concept found fast groovy beautifully coordinated Mike loves An Owen Kampen design has taken over Concept Ace 15 takes 7-in diameter prop flies far nicer 8-4 three-channel joy youve stick time Srull still flying Flitecraft CardinaL Moves out like Kavalier ailerons 35 So smooth problems vanish provided have gone beyond Primary fascinated Flitecrafts boxy 29 trainer three channels Looks different high cabin stumpy Its some what-Scale Polish Wilga have soloed youll love step up Asked beginnerwho doing wellif might fly find yourself tooling around rudder banking unbanking rudder aileron Would love have fun flying speed Highly impressed Airtronics Q-Tee Until now weve seen flown TDs huge thrust offsets right down guys zooming over joint fighting wind crate going like rocket-kite So along came beginner young couple first crate never flown birthday gift flew big Christmas judge didnt fly Christmas would aeronautical instructors helped put up Quite beautiful glide went forevertwo 360s over fence happy couple jumped up down mad delight Things like get Bill Winter 4426 Altura Ct Fairfax VA 22030 Neutron Star/Gilgenbach Continued page 27 bearings snug shaft keeping shaft parallel wing saddle confi dent shaft aligned properly Super Jet bearings fuselage being careful stick bearings shaft little Vaseline shaft will help prevent Scrape inside bearings allow easy rotation shaft excessive play Install bottom engine tank com partments Cut out engine cooling passages fuel proof both compartments Hobby poxy Formula 2 Install remaining bottom fuselage cluding sub-fin fit two hatches Continued page 95 STERLING MODEL Priced Right 821 Ibi1 Srr Radio Control Control Line 1525 Engine 1 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power Penny Pincher Gliders HiHellcat H2Mustang H3Piper Cub H4Cessna 180 H5Sabre Jet H6T38A Thunderbird Wingspan 13 Price $198 Full Color Covering inclu ded Handsomely detailed just like real airplanes Youll Fly Everyday Just put 2 nose weight Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Address City StateZip April 1982 73 lxii Wingspan 40-5/16 Scale 2-1/8 ice $4595 For
Edition: Model Aviation - 1982/04
Page Numbers: 10, 12, 68, 73
S Cvnwslirsl Cross-country RC fly ing fliers view safety res pirators MEKP polyester resin hardeners John Preston WE HAD planned further discussion subject cross-country flying RC model aircraft However received sev eral letters subject during past month note February 1982 issue Model Aviation VP District IV Chuck Foreman has request comments future Trans-AmRallies Since appear alone questioning safety crosscountry flying thought should have benefit seeing letter presents other side coin letter comes Rick Helmke flew 1981 Trans-Am team Auburn Planesmen RC Club As participant 1981 Trans-Am Rally feel must take exception manner such events being treated AMA general John Preston particular Mr Preston printed letter July 1981 Safety Comes First column opposing crosscountry RC flying along public highways writer letter Paul Smith claims such activity endangers innocent bystanders such manner should undertaken reason goes say such activity could also endanger rights modelers fly country Mr Preston takes some what same position December column saying better ways bringing model aircraft public eye Im afraid both gentlemen have gone too far condemnation such activities has experience recent months flying moving vehicle entails relatively little danger compared other RC acti vities just little different Thanks co operation local police escort during local practice sessions rally Whenever potential conflict traffic developed either waited until things clear officer directed traffic away no time during practice rally did fly over densely populated areas practice sessions carried out rural areas situa tions tougher rally itself Any time during rally passed through town planes carried through Safety primary concern did Contest Directors instructed allow plane fly unless good flying condition something always observed local flying fields Pilots instructed sac rifice airplanes favor safety should situa tion require dont think pilot would have done otherwise necessary As equipment failures anyone using little sense plane radio top condition both rally practice sessions Mr Smith professes have over 20 years modeling ex perience says active competitor As such must realixe people participate events such Trans-Am Rally serious modelers competent safe pilots take great care ensure models perfect condition Both Mr Preston Mr Smith operate under erroneous assumption radio fails airplane will crash immediately last two radio failures witnessed plane flew across field crashed just behind pit area other wound up two miles away Neither aircraft seriously damaged Nevertheless radio link between plane pilot tenuous Mr Preston would have us believe radio failure along route loss servo As returned home reviewed route Rally took noticed very few homes towns along way entire route planned Bob Doris Rich avoid towns busy highways except interstates possible thought did excellent job As Mr Prestons contention better ways bring sport public eye cant think substantial media coverage Meridian MS probably have ever gotten locally have often felt attitudes shown Mr Preston Mr Smith prevalent early days RC would have come nearly far have No will disagree safety foremost concern model aviation like anything rapid stages development RC has witnessed must spirit adventure desire something new Mr Preston Mr Smith seem lacking both Cross-country flying can being done safe manner RC activity deserves much better treatment getting Instead eliminating activity need weed out making unsafe same true modeling activity Mr Smith worried abut being able keep flying needs look unsafe fliers because what make anything unsafe Its events safe unsafe Its people flyingthat bring about safety record have comments Ricks letter subject cross-country flying general still interested hearing Also might take time read Chuck Foremans column page 82 February issue let District VP know feelings Back November 1981 received letter Lee Lippert modelers Apple Valley MN will know runs Greenleaf Hobby Store Lee enclosed article subject respirators written local Soaring clubs newsletter dont Continued page 12 10 Model Aviation NOW HEAR THIS YOUR I1NNER IS GETTING COLD DU BRO HEAVY DUTY HINGES 000 D 3F 000 Removable Cotter Pin 000 Shown actual size 0 0 0strong nylon hinges built take heavy loads Dimen sions 3/4 wide x 1-3/8 long x 040 thick using 3/64 diameter cotter pin maximum convenience strength Ideal 1/4 scale models 15 Per Pkg 375No257 E-Z CON N ECTORS 96c Pr SNAP ON PEEN ON WE HAVE INCLUDED IN EVERY PACKAGE OF E-Z CONNECTORS 2 OF OUR NEW NYLON SNAP-ONS ESPECIALLY MADE TO HOLD TIGHT ON ANY SIZE CONTROL ARM THESE NEW SNAP-ONS CAN SAFELY BE USED OVER AND OVER AGAIN FOR THOSE OF YOU WHO STILL PREFER PERMANENT INSTALLATION JUST PEEN ON THEWASHER AS BEFORE YOUR CHOICECat No 121 THE FINAL FILTER ri ON LY 11/4 FILTERS IN EITHER DIRECTION ICLEAN BY BACK FLUSHING ultimate in-line fuel filter twice much fuel filtering capacity filters now available extremely fine 130 micron polyester screen filters out smallest particles yet because large filtering area does restrict fuel flow Proven 20% better wire screen equivalents classy looking aluminum filter should used between engine tank fuel can lineACTUAL SIZE CAT NO 162 ONLY $175- DU-BRO 20 FLEX-CABLE MOTOR CONTROL Provides ultimate control cable assembly Highly control horn flexible free running adjuslable KWIK SWITCH MOUNT 7/ simplest fastest easiest way mount battery switch complete switch mounting set enables install battery switch minutes anywhere fuselage drilling 3/16 hole! Excellent use planes helicopters boats cars Designed fit wall 0LPIQthickness up 3/8Cat No 203 - DU-BRO PRODUCTS INCORPORATED Bonner Road Wauconda Illinois 60084 U S already have respirator use spraying models may have allergy dust think following article Lee worth reading Sailplane addicts dont paint models much power fliers encounter some materials have caused severe problems dont use proper equipment chemicals include epoxies polyesters urethanes various thinners catalysts Common elements finishing products xylene naptha toluene toluol chemicals aromatic hydrocarbons generally considered low hazard value However recent incident came attention man died result using epoxy paint open air official cause death acute xylene poisoning As result incident search effective readily available light inexpensive mask made another organization Practical Sailor findings products made 3M Company specific models recommended follows 1 3M No 8709 Easi Spray Paint Respiratbi $795 plus tax simple inexpensive respira tor should give user adequate protection both organic vapors particles might encounter normal finishing work outdoors including protection spraying mask should last year provided kept sealed bag between uses should discarded user can detect odor taste vapor breathing through becomes difficult exhalation valve makes breathing through device easier through typical particle mask handy respirator designed painters comfortable enough wear neither discomfort nor inconvenience should become excuse wearing respira tor affixed dual adjustable elastic bands flexible metal stiffener over nose permits bending close fit 2 3M No 8741 Spray Paint Respirator As sembly $1300 plus tax two-part res pirator-filter NIOSH/MSHA approved use paints give off organic vapors well protection mists dusts active respirant material charcoal respirator body semi-rigid plastic attaches double adjustable elastic straps moderately comfortable wear takes some getting used However what device intended should serious drawback Goggles and/or glasses fit easily above respirator gives warning high concentrations vapors allowing user smell long device lasts depends upon breath ing rate vapor concentration vapors can smelled first sign irritation respirator saturated replaceable cart ridge should changed mask recom mended anyone working polyurethane coatings polyester epoxy resings well hydrocarbons whenever concentration vapors substances could rise level could cause discomfort possible toxic reactions including use confined area 3 3M No 9920 Dust/Fume/Mist Respirator $290 plus tax mask similar appear ance No 8709 designed use spray painting recommended sensitive dusts other particulates may encounter during model building Again mask designed give protection paint thinners prices quoted masks current November 11981 given oureconomic conditions subject change Continued page 68 12 Model Aviation Kawasaki Homers Smooth One. nfl222C1D Sale $17995 315 CID Sale $19499 Comes 6-bolt hub built-in choke Twin stack mount optional Like Quadra Opttanal twin-stack esIllar Swain 5mm enailahln Snh esrains nnailahl Dashs na pins. high. nesnpranniss & Inaja Ill Optinsal nhks Easy hand starting Spanial nlens-naaplndhigh-tsnnisn nyntsn inns RI nadiatiss Solid-baa. typs wane win ap tinsal radial sappnutnanait Rollnr tlennt-hainm nnnleninaly wan wndsl airaralt nwar-halannnd a...n fivehasi 37 SUPER POWER ROPER 22 QUADRA ENGINE 19 ROPER ENGINE NEW Sele Leer 79 ENGINE NUB N MOUNT PACK 79 USEO DEMO ENGINE BALENCED 6-BOLT NUB Rope Pm. N Oudre PROP DRILL JIG dLight weight metal construction Low cost parts A11 versions fully aerobatic AMA/FAI patterns QsisI knnssl ers mai ~g tail drives New H S Hornet CID 6 1/3 HP Only 6 1/4 lbs So compact measures much larger Quadra Partner engine Comes complete built-in choke 6-bolt prop hub Radial mount twin stack available List $28995 INTRO $19995 SALE 7255 7200 2455 7995 500 1555 755 250 Youll Love Partner An updated versron thrs popular engine Note improve ments made especially mini ature aircraft use roller thrust bearing double-ring pistom location low 13 1/2 power output LIMITED TIME OFFER LIsT $14995 SALE $8995 ptiasal hrita npinnnr starts nerd grant Haney-daly prep Itoh MORE HORNER SPECIALS PART RETAIL SALE 112 $249 55 $799 00 RADIAL MOUNTReper 37 N 19 103 RADIAL MOUNT Pert. 123 TWIN STACK EXHAUST 37 N Kierine105 109 12500 $9995 TWIN STACK EXHAUST Parr,, Qtdt 720 CHOKE ASSEMBLy Pm. N Quad 721 70955003955BRITE SPINNER Rep Pert N Quad722 779 5500 NEOPRENE GAS LINE Per Feeg 707 770 2500 RESISTORSPARKPLUGRCJ-B 713 BIG PROPS AVAILABLE Fetiehed e,d BeIetred Weed 7077455 702595 Write CALL Safety Preston Continued page 12 Lee sent us article enclosed 3M bulletins describe respirators describing No 8709 noted following statement preceded word IM PORTANT 3M Brand Easi-Air Paint Respir ator No 8709 designed protection against airborne concentrations paints coatings containing two-tenths part per million 02ppm free isocyanate spray Areas should adequately ventilated contain ing least 195% oxygen Respirator must worn atmospheric concentrations contaminants unknown immediately dan gerous life health use individuals have known respiratory problems have ever reaction isocyanates~ wrote 3M asked recom mendation respirator use spraying I paints containing polyisocyanates telephone response learned No 8709 may used such purposes spray area well ventilated So aware addition wearing respirator must use paints containing isocyanate curing agents room effective exhaust fanor outdoors can Also aware spraying operation finished harmful vapors will continue present paint curing recently attended meeting pre sentation finishing models given Dave Pearce well known North Carolina modeler After spraying color coats adding trim Dave uses clear final coat containing iso cyanate curing agents After experiencing flulike symptoms breathing problems stemmed being present room model after sprayed final coating Dave now uses spare bathroom equipped exhaust fan drying room final note 3M respirators No 8709 model available through industrial safety equipment distributors also sold through auto parts stores model No 6986 hardware stores known model No 8655 January 1982 safety column printed letter received Jack Kinney stated peroxide level MEKP hardener used polyester resin lowered appar ently government regulation protect user stated puzzled Jacks statement because could find regula tion further letter Jack produced industry source check turns out Department Transportation regulation set November 20 1980 official date whereby will illegal transport MEK peroxide exceeding 9% active oxygen Suppliers MEK peroxides have no control over ruling will required comply thank Jack information would suggest check instructions using recently-purchased polyester resin hardener rather relying past experience correct amounts use Jacks industry source Pennwalt Corporation bulletin dated July 1980 say users its products other formulation use conditions unchanged about 20-25% 9%-active-oxygen MEK peroxide ie Lupersol DDM-9 will required yield equivalent gel/cure times obtained now familiar 11% active oxygen material Despite its reduction strength still urge Continued page 73 0 New Expandable concept RIC Helicopters o The Competitor will fly 45 50 060 size engines l can take novice flying winning AMA expert class Advanced design features never before seen R/C Helicopter Triple ball bearings main tail rotor hubs Autorotation standard eControls designed inverted flight love 24 w/ optional choke SALE $17995 Seed 20L Stamp fur CatalogWill Shp Orders Same Oay cOoupsAdd 54 shipping per engine HORNER SALES INC Rt2Box93000ixieHwy.312946-2515 68 Model Aviation TOLEDO/82 TWENTY EIGHTH ANNUAL R/C EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 2 3 4 1982 attend WORLDS GREATEST RADIO CONTROL MODEL SHOW fea turing worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely finished models display enter competition ex citing awards Complete n/c systems will awarded first second third place winners new COLOR TELEVISION will presented lucky winner Best Show Open public three great days presented WEAK SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43613 APRIL 23&4 FRIDAY 9am 6pm SATURDAY 9am 6pm SUNDAY9am 430pm W4c3 extremely cautious using MEKP can still cause blindness contact eye occurs column being written New Years Day will read late February early March Let us remind RCers havent already done now would good time have radios serviced before contest season upon us Maybe working OK hung up last year maybe wont work well today An ounce prevention worth pound cure Have safe month John Preston 7012 Elvira Court Falls Church VA 22042 Fun/Winter Continued paqe 18 ballast Raves DeBolt rotates wing stab angles incorporate downthnist dont see works better ordinary downthrust dont know Hal did first Live Wire about 1950 Air Scout Concept found fast groovy beautifully coordinated Mike loves An Owen Kampen design has taken over Concept Ace 15 takes 7-in diameter prop flies far nicer 8-4 three-channel joy youve stick time Srull still flying Flitecraft CardinaL Moves out like Kavalier ailerons 35 So smooth problems vanish provided have gone beyond Primary fascinated Flitecrafts boxy 29 trainer three channels Looks different high cabin stumpy Its some what-Scale Polish Wilga have soloed youll love step up Asked beginnerwho doing wellif might fly find yourself tooling around rudder banking unbanking rudder aileron Would love have fun flying speed Highly impressed Airtronics Q-Tee Until now weve seen flown TDs huge thrust offsets right down guys zooming over joint fighting wind crate going like rocket-kite So along came beginner young couple first crate never flown birthday gift flew big Christmas judge didnt fly Christmas would aeronautical instructors helped put up Quite beautiful glide went forevertwo 360s over fence happy couple jumped up down mad delight Things like get Bill Winter 4426 Altura Ct Fairfax VA 22030 Neutron Star/Gilgenbach Continued page 27 bearings snug shaft keeping shaft parallel wing saddle confi dent shaft aligned properly Super Jet bearings fuselage being careful stick bearings shaft little Vaseline shaft will help prevent Scrape inside bearings allow easy rotation shaft excessive play Install bottom engine tank com partments Cut out engine cooling passages fuel proof both compartments Hobby poxy Formula 2 Install remaining bottom fuselage cluding sub-fin fit two hatches Continued page 95 STERLING MODEL Priced Right 821 Ibi1 Srr Radio Control Control Line 1525 Engine 1 Wingspan 33 Price $2495 For Radio Control Control Line 049 eng Free Flight Rubber Power Penny Pincher Gliders HiHellcat H2Mustang H3Piper Cub H4Cessna 180 H5Sabre Jet H6T38A Thunderbird Wingspan 13 Price $198 Full Color Covering inclu ded Handsomely detailed just like real airplanes Youll Fly Everyday Just put 2 nose weight Catalog Request STERLING MODELS BUILDING 3620 G Street Philadelphia PA 19134 Catalog entire line airplane control line model kits R/C scale Trainer Kits boat model kits ac cessories etc $100 enc losed Name Address City StateZip April 1982 73 lxii Wingspan 40-5/16 Scale 2-1/8 ice $4595 For