Safety Comes First

John Preston Safety Comes First Want safe youve got think safeall time instance containers model fuel must treated respect Much including admonitions hook up RC planes controls correctly CONSIDERING amount fuel modelers consume during course flying season casual manner us handle hear few incidents involving fires explosions associated flammable liquid such incident however reported few weeks ago Carl Begelman Bayside NY spotted following story New York Daily News Sun day April 7th has edited slightly EAGLE-EYE COP Saw burglar makes rescue instead cop ran West Side build ing after thought saw burglar fire escape wound up rescuing critically burned man blazing apartment 23-year-old occupant critically burned about 200 pm can model airplane fuel exploded face testing small engine apart ment police said blast sent flames throughout railroad flat left man unconscious Police Officer Michael Reingold routine patrol W 82nd St sta tionhouse said raced building after saw man run down fire escape wasnt yelling fire thought burglar cop said smelled smoke traced second-floor apartment alerting tenants flee building went got apartment floor walls burning said Reingold saw guy lying against wall got him out went upstairs warn people Firefighters arrived minutes later quickly put out blaze con fined apartment About 60 people briefly evacuated building victim listed stable condition burn unit New York Hospital Cornell Medical Center Reingold treated smoke inhalation St Lukes Roosevelt Hospital have attempted obtain details concerning incident far Ive unsuccessful did contact AMA found modeler member What caused can fuel explode anybodys guess point However fact victim attempting run engine apart ment has leading cause strongly discouraged Call coincidence wish days mail just arrived found letter Californian Allan Holton account another incident fire started fuel model type fuel wasnt specified New York incident Allans letter states incident concerns gasoline letter editor Model Aviation typed Agnes Woodside third-grader private school Allan teaches pupils build models Im reproducing account cause fire exactly typed Agnes FLASH Mike. built fine / scale bipe flying local field got fantastic headake put Kavan powered gasoline bipe ranchero put car garage closed door went bed Result 47 lincon ran chero bipe fine j-3 cub radio stuff garage burned up Cause did drain gasoline bipe leaked floor Gas fired water heater did again Mike says Put drain lowest part tank pipe bottom fuselage PUT drain valve end pipe guess Im going have add anoth er suggestion Mikes list Use drain empty fuel tank before leav ing flying field Im subject hazards associated model airplane fuel alcohol-based fuel gasoline let recall some incidents have previously appeared column us carry a gallon fuel can Continued page 16 14 Model Aviation IA5 LOS $43 I-WAVE CI-b5 ANOTf4E NAM O1i4E Ti-f4M t1CAS64 AlJD 3U4 HIGH FILM STRENGTH LUBRICANT special additives increase lubricity extreme pressure characteristics oil VISCOSITY INDEX IMPROVERS insure proper lubrication high RPM high temperatures WETTING AGENTS increase plating action oil SPECIAL DETERGENTS cut power robbing varnish ANTI-FOAM ADDITIVES prevent high RPM lean-out RUST PREVENTATIVES protect expensive engines HIGHEST QUALITY INGREDIENTS insure top engine performance reliability Type Nltro /o LubrIcant1-3 Gal 4-23 Gal 24-53 Gal 64-123 Gal 124 Gal FAI00/0Synthetic$675$595$525$495$475 555/oSynthetic$775$695$625$595$543 ScSo/oCastor Oil$775$695$625$595$543 105100/0Synthetic$895$819$695$675$627 lOc100/0Castor Oil$895$819$695$675$627 RIO 121/20/0 Syn/Castor $995$919$825$795$697 iSs150/0Synthetic$995$919$825$795$697 4-cycle 70/oCastor/Syn $850$795$695$650$595 4-cycle 150/oCastor/Syn $995$919$825$795$697 iI 100/0 SUPER SPORT$795$695$595$550$525 1Sa/o SUPER SPORT$895$795$695$650$595 100/0 SUPER SPORT 4-cycle $795$695$595$550$525 SHELDONS ALL NEW SUPER-SPORT FUELS special blend Nitros LOWER YOUR FLYING COSTS insure LONG ENGINE LIFE have lowered oil content fuel formulations SHELDONS HOBBY SHOP 3157 Alum Rock Avenue San Jose California 95127 Out State FOR ORDERS CALL California 800 228-3232 251-0789 Information Call 408 2518686 Hours Mon-Wed Fri & Sat 930-5 30 Thur 930-900 Sun 1200-5 00 Newt MK II H & K Superstarters 0-35$249B 0-50$2495 MAG II$3495 Super Hustler$3495 Zenoah$2495 Tartan Twin$3995 Roper 37$2495 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb linkage Complete assembled shown $14495 $16495 wlsuperstarterl DEALER INQUIRES INVITED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX same field box accommodates 12-volt battery provide power starter fuel pump glow plug power panel should aware bat tery could become source ignition can fuel Several years ago well-known Scale modeler came very close losing eyesight can fuel contacted terminals top battery resulting spark caused explosion fire tore following Word Warn ing club newsletter ago neglected make note name club However editors name Walter Alexander say fellow Club members Recently have noticed some members flying field electric fuel pumps flight boxes Some fuel pumps hooked up very reckless manner saw wires pumps hooked wires 12-volt bat teries dangling down beside metal fuel cans wires no insulation around connections Like Walter have also seen some flight boxes looked like accident waiting happen Presumably use gasoline model fuel store transport safety can separate flight boxes use manuallyoperated fuel pump specifically intended use gasoline Bear mind flash point minimum temperature flammable vapor will present gasoline -45 0F 520 methanol think people aware hazard leaving can gasoline trunk car hot day ever know least incident can glow fuel being transport ed trunk car exploded Florida modeler reported inci dent believed explosion oc curred because fuel least year old become chemically unsta ble am inclined believe fuel vapor escaped can filled trunk whereupon ignited some source such fault cars electrical system Staying subject explosions fires recently received letter Fred Marryott belongs LARKS club Lake Charles LA Freds letter referred Helpful Hint appeared Harry Murphys Free Flight Duration column page 164 January 1985 issue magazine helpful hint concerned use tape solder performing field repair As stated Harrys column product can obtained Radio Shack Archer brand Catalog No 64-010 Harrys examples tape solder might useful performing repair flying field fix leak fuel tank Harry did state column must take proper precautions Continued page 18 16 Model Aviation VISA 1-23 Gal via UPS 24-124 Gal via truck freight collect UPS COD OK- $190 6300 Handling per fuel order PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94540Tel 415 581-4277 Eves WfEEEEEEEEEEEKEEEEEE U..U. SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 % NITRO 0% PAl 5% 10% 15% 25% 35% 10% 15% PINT $295 $350 $395 $415 $475 $550 QUART $425 $495 $525 $595 $695 $795 NEW SIG $395$525 $415$595 THE CHOICE OF GALLON $ 995 $1195 $1395 $1595 $1995 $2395 4-STROKE FUEL $1350 $1550 FREIGHT COLLECT 55 GAL DRUM $17500 $24500 $31000 $37400 $50000 $64000 $29500 $35900 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 OKif 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 See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 ____ SIG MANUFACTURING CO Montezuma IA 50171 EEEEEEEEEEEEEEEE using open flame around fuel tanks close proximity model itself letter Fred follow ing say could very very dangerous since way make fuel tank safe repair 1 Fill water 2 Fill inert gas seal prior applying heat True glow fuel quite hazardous gasoline under right conditions will react same way remember incident several years ago happened friend fuel tank exploded trying solder Im trying discourage picking up Harry Murphys sug gestion carry tape solder field repairs urge cautious about its use repairing leaks fuel tanks Back Januray 1983 Safety column quoted newspaper account alleged brush fire consumed some 150 acres caused crash model time stated skeptical model using alcohol fuel likely cause brush fire As result statement received about half dozen letters modelers watched models crash burn Since fire extinguisher can ob tained no price gallon fuel suggest dont already carry give serious con sideration came close losing very first RC model engine backfire ignited fuel spilled inside cowling glow fuel dont see flamesyou just see glossy yellow paint finish turning dark brown received numerous letters readers response story about hot dog flier appeared column May 1985 issue attempted pro vide solutions problem such flier presents printable However intersting letter came AMA AVP think will agree needs no further comment am AMA AVP semi-regu lar flier same community college mentioned May issue MA dealt hot dog flier field no doubt article dealt received several calls support viewpoint author also contact author Ive known some time still wishes remain anonymous can appreciated feels very strongly points did numerous callers Just because author does want known doesnt mean problem does exist Silent witness programs have put undesirables behind bars also lengthy conversation Continued page 20 18 Model Aviation U B U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U ALL PURPOSE FOAM CUlTER Hands Off Cut II 10250 plus $100 ship ft handl Assembled Model HANDS OFF CUT II unique deviCe Cutting high quality foam wing Cores hands off also cuts both sides same time Most modelers will amazed high quality smooth surfaCe will achieve using device plus added ad vantage having wait until friends can come around help However just foam wing cutter HANDS OFF also capable cutting precision foam components such fuselage sections cowls tail surfaces HANDS OFF available two ways 1 completely assembled easy store fold up box includes handy 40 inch bow blocking up foam 2 hardware package assemble own board HANDS OFF CUT II requires 24 volt variable output power supply Hands Off Cut II Hardware Pkg $8750 plus $3 ship ft hand 24 Volt Variable Output Power Supply$5250 plus $3 ship ft hand j NORRAY PRODUCTS INC o5009 Sandbeach Road Y Wichita Falls TX 78310 Tel 817 692-4475 subject article Ive known him nearly 20 years person responsible getting started RC good article points out individual own mind felt points invalid would admit frequency flag issue explanation further explained individual several people could identify him subject also perceiving problem know individual will ever change asked him take look mirror objectively review points article decide himself change behavior necessary Pride hardest thing have damaged especially RCer bottom line may have similar problems problem safety everybodys concern hobby have enough external conflicts creating own own internal prob lems Take look yourself doubt right probably wrong somewhere close following says regarding safety hobby part solution part problem Although letter AMA AVP did specifically request anonymity have witheld name District area name community college AVP appears have made positive identification hot-dog flier de scribed anonymous letter-writer May 1985 column furthermore has talked him flier must already know guilty accusations dont believe would best inter est anyone concerned reveal episode taking place However would like extend invitation hot-dogger write side story such letter received its printable would gladly publish guarantee anonymity same time recently received letter Art Arro Ann Arbor MI wrote response statement January 1985 column concerning safety record RC Pylon Racing events stated have never discussed Pylon Racing column because have received reports safety-related incidents asked reason perhaps Pylon Racers exercise cau tion others hobby Art responded has gut feel Pylon safer typical sport flying number reasons strict adherence Safety Guidelines drafted NMPRA Safety Committee addition RC Pylon Safety Check List compiled use inspecting model before flying sanctioned competition Art included copy check list will pass anybody requests copy encloses SASE What Im building up came last paragraph Arts let ter said final analysis human error factor greatest threat safety hobby Continued education emphasis safety awareness probably best preventative guess have agree Art incidents occur club flying field can attributed human error example halfway through writ ing column decided visit local club field see what going An old friend shall nameless came up said Youre too late already committed safety violation today What referring first last flight bipe flies club show team installed new lower wing replace old ratty said did perform preflight check everything appeared fine However didnt notice ailerons hooked up backwards Seems like covered last month Ive heard said full-scale pilot circles have willland gear retracted Perhaps model aircraft world saying should apply aileron hook-ups Continued page 119 20 Model Aviation dJ& ROBERTS f last tip own transmit ter switches dual rate mixers ser vo reversing etc comes Guy Wire newsletter Daytona Beach RC Association editor Bill Brad ford month club president Steve Searle Jr has Message Left Seat first page April 1985 issue message concerns safety included preflight check list Item No 3 list DOUBLE CHECK bells whistles transmitter before flying Youd sur prised reports Ive seen crashes caused inadvertent switching bells whistles switches Dont humans makes error month Have safe John Preston 12235 Tilden wood Dr Rockville MD 20852 Aeronca K/Wischer Continued page 34 skylight window drape-formed over aluminum sheet forms made printers litho plate plastic laid across form balanced along its centerline placed pre-heated oven 250 0F Rt 2 Box 2547 La Grande OR 97850 503- 963-0596 VISA Welcome VERY FINEST QUALITY MATERIALS SUPERIOR MACHINE FINISHED PARTS SUPER CLEAN FLYING AIRPLANES FAST BUILDING ENJOYABLE ASSEMBLY forming takes minute two Remove form oven wait another minute cooling plas tic retains shape prefer cut plastic its final shape after forming Use pattern shown drawing determine beforehand whether will fit fuselage Make corrections neces sary make new pattern before cut ting precious windshield blank doubt about exact bent shape windshield form use pattern cut dummy windshield aluminum sheet Bend dummy fit fuselage use shape form Thats extra step may save time end Flying Aeronca few air planes have built slightly noseheavy spite its long tall short nose moments No ballast has add ed flies very well its present balance condition shown drawing will perform tail-spin very well see no reason add tail weight model reluctant enter spin some extra weight would have required tail spin few aerobatic maneuvers K capable performing some concern anyone thinking com petition full-size plane no ballof-fire could perform simple loop split-S wing-over spin Elevator travel measured FIRECAT SPAN 577 ENGINE 35 50 CLASSY LOW WING BEAUTY FLIES IN GROOVE EASY TO TRIM VERY AEROBATIC Also Available TOPCAT Span 577$5950 BI-CAT Span 478750 LASERCAT Span 547450 Dealer Inquiries Invited model 1% up 1% down extra down-motion result elevator horn being swept forward clearance reasons isnt required flight Down-elevator rather useless control Scale models aileron travel 1 in direction could increased bit possibly 1 Rud der travel maximum allowable 3 in direction dimension rudder comes very close touching elevator Wheels Aeronca quite far ward effect landings tendency bounce three-pointer attempted under ideal conditions cer tain bounce-free landing bring bit fast land main wheels also applied flying full-size ship although expected make landing three-pointer during train ing Takeoff requires very little rudder narrow landing gear crosswind takeoff landing can quite adven ture Its best lined up directly wind No model have ever built easier fly highly detailed three-view documen tation drawing Aeronca K NC 19345 license number available 44th-scale Paul Matts Historical Aviation Album Price $500 postpaid Drawing number 15-103-A competition document pur Continued page 122 GIANT TEST STAND recent development large 60 1 6 two cycle four cycle engines has created demand durable heavy duty engivetesting stand newtest stand cast aluminum will become softand oil soaked wood test stands often OCAST IN ALUMINUM FOR STRENGTH DURABILITY AND ENGINE HEAT DISSIPATION SWIDE MOUNTING BASE SUPPORT SADJUSTABLE ENGINE SUPPORT BASES WILL HOLD MOST ENGINES FROM 12 DOWN TO 1/2A S HEAVY DUTY LUG PRESSURE PADS STEEL ENGINE RESTRAINING PINS No 51617SMOUNTING SCREWS INCLUDED AT MOST HOBBY SHOPS OR ORDER DIRECT a aa Send 100 13 page illustrated catalog August1985 119 it- Ai Safety Preston Continued page 20 Schlueter Free Flight Models 3508 Poinsettia Ave Manhattan Beach Ca 90266 Dealer Inquiries Invited 0 S PACIEiC ACE BLACK BULLET PARTIAL KITS plans &printed wood PACIFIC ACE BLACK BULLET 2O$3253O$47O 40T665ADD S2OO SHIPPVJGPOREACHITO3 KIT ORDERCA RES ADO 6I TAX

John Preston Safety Comes First Want safe youve got think safeall time instance containers model fuel must treated respect Much including admonitions hook up RC planes controls correctly CONSIDERING amount fuel modelers consume during course flying season casual manner us handle hear few incidents involving fires explosions associated flammable liquid such incident however reported few weeks ago Carl Begelman Bayside NY spotted following story New York Daily News Sun day April 7th has edited slightly EAGLE-EYE COP Saw burglar makes rescue instead cop ran West Side build ing after thought saw burglar fire escape wound up rescuing critically burned man blazing apartment 23-year-old occupant critically burned about 200 pm can model airplane fuel exploded face testing small engine apart ment police said blast sent flames throughout railroad flat left man unconscious Police Officer Michael Reingold routine patrol W 82nd St sta tionhouse said raced building after saw man run down fire escape wasnt yelling fire thought burglar cop said smelled smoke traced second-floor apartment alerting tenants flee building went got apartment floor walls burning said Reingold saw guy lying against wall got him out went upstairs warn people Firefighters arrived minutes later quickly put out blaze con fined apartment About 60 people briefly evacuated building victim listed stable condition burn unit New York Hospital Cornell Medical Center Reingold treated smoke inhalation St Lukes Roosevelt Hospital have attempted obtain details concerning incident far Ive unsuccessful did contact AMA found modeler member What caused can fuel explode anybodys guess point However fact victim attempting run engine apart ment has leading cause strongly discouraged Call coincidence wish days mail just arrived found letter Californian Allan Holton account another incident fire started fuel model type fuel wasnt specified New York incident Allans letter states incident concerns gasoline letter editor Model Aviation typed Agnes Woodside third-grader private school Allan teaches pupils build models Im reproducing account cause fire exactly typed Agnes FLASH Mike. built fine / scale bipe flying local field got fantastic headake put Kavan powered gasoline bipe ranchero put car garage closed door went bed Result 47 lincon ran chero bipe fine j-3 cub radio stuff garage burned up Cause did drain gasoline bipe leaked floor Gas fired water heater did again Mike says Put drain lowest part tank pipe bottom fuselage PUT drain valve end pipe guess Im going have add anoth er suggestion Mikes list Use drain empty fuel tank before leav ing flying field Im subject hazards associated model airplane fuel alcohol-based fuel gasoline let recall some incidents have previously appeared column us carry a gallon fuel can Continued page 16 14 Model Aviation IA5 LOS $43 I-WAVE CI-b5 ANOTf4E NAM O1i4E Ti-f4M t1CAS64 AlJD 3U4 HIGH FILM STRENGTH LUBRICANT special additives increase lubricity extreme pressure characteristics oil VISCOSITY INDEX IMPROVERS insure proper lubrication high RPM high temperatures WETTING AGENTS increase plating action oil SPECIAL DETERGENTS cut power robbing varnish ANTI-FOAM ADDITIVES prevent high RPM lean-out RUST PREVENTATIVES protect expensive engines HIGHEST QUALITY INGREDIENTS insure top engine performance reliability Type Nltro /o LubrIcant1-3 Gal 4-23 Gal 24-53 Gal 64-123 Gal 124 Gal FAI00/0Synthetic$675$595$525$495$475 555/oSynthetic$775$695$625$595$543 ScSo/oCastor Oil$775$695$625$595$543 105100/0Synthetic$895$819$695$675$627 lOc100/0Castor Oil$895$819$695$675$627 RIO 121/20/0 Syn/Castor $995$919$825$795$697 iSs150/0Synthetic$995$919$825$795$697 4-cycle 70/oCastor/Syn $850$795$695$650$595 4-cycle 150/oCastor/Syn $995$919$825$795$697 iI 100/0 SUPER SPORT$795$695$595$550$525 1Sa/o SUPER SPORT$895$795$695$650$595 100/0 SUPER SPORT 4-cycle $795$695$595$550$525 SHELDONS ALL NEW SUPER-SPORT FUELS special blend Nitros LOWER YOUR FLYING COSTS insure LONG ENGINE LIFE have lowered oil content fuel formulations SHELDONS HOBBY SHOP 3157 Alum Rock Avenue San Jose California 95127 Out State FOR ORDERS CALL California 800 228-3232 251-0789 Information Call 408 2518686 Hours Mon-Wed Fri & Sat 930-5 30 Thur 930-900 Sun 1200-5 00 Newt MK II H & K Superstarters 0-35$249B 0-50$2495 MAG II$3495 Super Hustler$3495 Zenoah$2495 Tartan Twin$3995 Roper 37$2495 90 Day Warranty ZENOAN QUARTZ CUSTOM Dual outlet aluminum muffler Carb rotated needle accessibility cowled Modified Quadra mount 6 bolt prop washer carb linkage Complete assembled shown $14495 $16495 wlsuperstarterl DEALER INQUIRES INVITED ALL ORDERS ADD $200 POSTAGE & HANDLING CALIF RES ADD SALES TAX same field box accommodates 12-volt battery provide power starter fuel pump glow plug power panel should aware bat tery could become source ignition can fuel Several years ago well-known Scale modeler came very close losing eyesight can fuel contacted terminals top battery resulting spark caused explosion fire tore following Word Warn ing club newsletter ago neglected make note name club However editors name Walter Alexander say fellow Club members Recently have noticed some members flying field electric fuel pumps flight boxes Some fuel pumps hooked up very reckless manner saw wires pumps hooked wires 12-volt bat teries dangling down beside metal fuel cans wires no insulation around connections Like Walter have also seen some flight boxes looked like accident waiting happen Presumably use gasoline model fuel store transport safety can separate flight boxes use manuallyoperated fuel pump specifically intended use gasoline Bear mind flash point minimum temperature flammable vapor will present gasoline -45 0F 520 methanol think people aware hazard leaving can gasoline trunk car hot day ever know least incident can glow fuel being transport ed trunk car exploded Florida modeler reported inci dent believed explosion oc curred because fuel least year old become chemically unsta ble am inclined believe fuel vapor escaped can filled trunk whereupon ignited some source such fault cars electrical system Staying subject explosions fires recently received letter Fred Marryott belongs LARKS club Lake Charles LA Freds letter referred Helpful Hint appeared Harry Murphys Free Flight Duration column page 164 January 1985 issue magazine helpful hint concerned use tape solder performing field repair As stated Harrys column product can obtained Radio Shack Archer brand Catalog No 64-010 Harrys examples tape solder might useful performing repair flying field fix leak fuel tank Harry did state column must take proper precautions Continued page 18 16 Model Aviation VISA 1-23 Gal via UPS 24-124 Gal via truck freight collect UPS COD OK- $190 6300 Handling per fuel order PK PRODUCTS Specializing Quadra/Zenoah Sales Service PO Box 6226 Hayward CA 94540Tel 415 581-4277 Eves WfEEEEEEEEEEEKEEEEEE U..U. SIG CHAMPION FUEL FREE SHIPPING ON ORDERS OVER $1000 % NITRO 0% PAl 5% 10% 15% 25% 35% 10% 15% PINT $295 $350 $395 $415 $475 $550 QUART $425 $495 $525 $595 $695 $795 NEW SIG $395$525 $415$595 THE CHOICE OF GALLON $ 995 $1195 $1395 $1595 $1995 $2395 4-STROKE FUEL $1350 $1550 FREIGHT COLLECT 55 GAL DRUM $17500 $24500 $31000 $37400 $50000 $64000 $29500 $35900 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 OKif 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 See dealer first available order direct Call Z 800-247-5008 toll free orders Catalog 47 $300 ____ SIG MANUFACTURING CO Montezuma IA 50171 EEEEEEEEEEEEEEEE using open flame around fuel tanks close proximity model itself letter Fred follow ing say could very very dangerous since way make fuel tank safe repair 1 Fill water 2 Fill inert gas seal prior applying heat True glow fuel quite hazardous gasoline under right conditions will react same way remember incident several years ago happened friend fuel tank exploded trying solder Im trying discourage picking up Harry Murphys sug gestion carry tape solder field repairs urge cautious about its use repairing leaks fuel tanks Back Januray 1983 Safety column quoted newspaper account alleged brush fire consumed some 150 acres caused crash model time stated skeptical model using alcohol fuel likely cause brush fire As result statement received about half dozen letters modelers watched models crash burn Since fire extinguisher can ob tained no price gallon fuel suggest dont already carry give serious con sideration came close losing very first RC model engine backfire ignited fuel spilled inside cowling glow fuel dont see flamesyou just see glossy yellow paint finish turning dark brown received numerous letters readers response story about hot dog flier appeared column May 1985 issue attempted pro vide solutions problem such flier presents printable However intersting letter came AMA AVP think will agree needs no further comment am AMA AVP semi-regu lar flier same community college mentioned May issue MA dealt hot dog flier field no doubt article dealt received several calls support viewpoint author also contact author Ive known some time still wishes remain anonymous can appreciated feels very strongly points did numerous callers Just because author does want known doesnt mean problem does exist Silent witness programs have put undesirables behind bars also lengthy conversation Continued page 20 18 Model Aviation U B U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U ALL PURPOSE FOAM CUlTER Hands Off Cut II 10250 plus $100 ship ft handl Assembled Model HANDS OFF CUT II unique deviCe Cutting high quality foam wing Cores hands off also cuts both sides same time Most modelers will amazed high quality smooth surfaCe will achieve using device plus added ad vantage having wait until friends can come around help However just foam wing cutter HANDS OFF also capable cutting precision foam components such fuselage sections cowls tail surfaces HANDS OFF available two ways 1 completely assembled easy store fold up box includes handy 40 inch bow blocking up foam 2 hardware package assemble own board HANDS OFF CUT II requires 24 volt variable output power supply Hands Off Cut II Hardware Pkg $8750 plus $3 ship ft hand 24 Volt Variable Output Power Supply$5250 plus $3 ship ft hand j NORRAY PRODUCTS INC o5009 Sandbeach Road Y Wichita Falls TX 78310 Tel 817 692-4475 subject article Ive known him nearly 20 years person responsible getting started RC good article points out individual own mind felt points invalid would admit frequency flag issue explanation further explained individual several people could identify him subject also perceiving problem know individual will ever change asked him take look mirror objectively review points article decide himself change behavior necessary Pride hardest thing have damaged especially RCer bottom line may have similar problems problem safety everybodys concern hobby have enough external conflicts creating own own internal prob lems Take look yourself doubt right probably wrong somewhere close following says regarding safety hobby part solution part problem Although letter AMA AVP did specifically request anonymity have witheld name District area name community college AVP appears have made positive identification hot-dog flier de scribed anonymous letter-writer May 1985 column furthermore has talked him flier must already know guilty accusations dont believe would best inter est anyone concerned reveal episode taking place However would like extend invitation hot-dogger write side story such letter received its printable would gladly publish guarantee anonymity same time recently received letter Art Arro Ann Arbor MI wrote response statement January 1985 column concerning safety record RC Pylon Racing events stated have never discussed Pylon Racing column because have received reports safety-related incidents asked reason perhaps Pylon Racers exercise cau tion others hobby Art responded has gut feel Pylon safer typical sport flying number reasons strict adherence Safety Guidelines drafted NMPRA Safety Committee addition RC Pylon Safety Check List compiled use inspecting model before flying sanctioned competition Art included copy check list will pass anybody requests copy encloses SASE What Im building up came last paragraph Arts let ter said final analysis human error factor greatest threat safety hobby Continued education emphasis safety awareness probably best preventative guess have agree Art incidents occur club flying field can attributed human error example halfway through writ ing column decided visit local club field see what going An old friend shall nameless came up said Youre too late already committed safety violation today What referring first last flight bipe flies club show team installed new lower wing replace old ratty said did perform preflight check everything appeared fine However didnt notice ailerons hooked up backwards Seems like covered last month Ive heard said full-scale pilot circles have willland gear retracted Perhaps model aircraft world saying should apply aileron hook-ups Continued page 119 20 Model Aviation dJ& ROBERTS f last tip own transmit ter switches dual rate mixers ser vo reversing etc comes Guy Wire newsletter Daytona Beach RC Association editor Bill Brad ford month club president Steve Searle Jr has Message Left Seat first page April 1985 issue message concerns safety included preflight check list Item No 3 list DOUBLE CHECK bells whistles transmitter before flying Youd sur prised reports Ive seen crashes caused inadvertent switching bells whistles switches Dont humans makes error month Have safe John Preston 12235 Tilden wood Dr Rockville MD 20852 Aeronca K/Wischer Continued page 34 skylight window drape-formed over aluminum sheet forms made printers litho plate plastic laid across form balanced along its centerline placed pre-heated oven 250 0F Rt 2 Box 2547 La Grande OR 97850 503- 963-0596 VISA Welcome VERY FINEST QUALITY MATERIALS SUPERIOR MACHINE FINISHED PARTS SUPER CLEAN FLYING AIRPLANES FAST BUILDING ENJOYABLE ASSEMBLY forming takes minute two Remove form oven wait another minute cooling plas tic retains shape prefer cut plastic its final shape after forming Use pattern shown drawing determine beforehand whether will fit fuselage Make corrections neces sary make new pattern before cut ting precious windshield blank doubt about exact bent shape windshield form use pattern cut dummy windshield aluminum sheet Bend dummy fit fuselage use shape form Thats extra step may save time end Flying Aeronca few air planes have built slightly noseheavy spite its long tall short nose moments No ballast has add ed flies very well its present balance condition shown drawing will perform tail-spin very well see no reason add tail weight model reluctant enter spin some extra weight would have required tail spin few aerobatic maneuvers K capable performing some concern anyone thinking com petition full-size plane no ballof-fire could perform simple loop split-S wing-over spin Elevator travel measured FIRECAT SPAN 577 ENGINE 35 50 CLASSY LOW WING BEAUTY FLIES IN GROOVE EASY TO TRIM VERY AEROBATIC Also Available TOPCAT Span 577$5950 BI-CAT Span 478750 LASERCAT Span 547450 Dealer Inquiries Invited model 1% up 1% down extra down-motion result elevator horn being swept forward clearance reasons isnt required flight Down-elevator rather useless control Scale models aileron travel 1 in direction could increased bit possibly 1 Rud der travel maximum allowable 3 in direction dimension rudder comes very close touching elevator Wheels Aeronca quite far ward effect landings tendency bounce three-pointer attempted under ideal conditions cer tain bounce-free landing bring bit fast land main wheels also applied flying full-size ship although expected make landing three-pointer during train ing Takeoff requires very little rudder narrow landing gear crosswind takeoff landing can quite adven ture Its best lined up directly wind No model have ever built easier fly highly detailed three-view documen tation drawing Aeronca K NC 19345 license number available 44th-scale Paul Matts Historical Aviation Album Price $500 postpaid Drawing number 15-103-A competition document pur Continued page 122 GIANT TEST STAND recent development large 60 1 6 two cycle four cycle engines has created demand durable heavy duty engivetesting stand newtest stand cast aluminum will become softand oil soaked wood test stands often OCAST IN ALUMINUM FOR STRENGTH DURABILITY AND ENGINE HEAT DISSIPATION SWIDE MOUNTING BASE SUPPORT SADJUSTABLE ENGINE SUPPORT BASES WILL HOLD MOST ENGINES FROM 12 DOWN TO 1/2A S HEAVY DUTY LUG PRESSURE PADS STEEL ENGINE RESTRAINING PINS No 51617SMOUNTING SCREWS INCLUDED AT MOST HOBBY SHOPS OR ORDER DIRECT a aa Send 100 13 page illustrated catalog August1985 119 it- Ai Safety Preston Continued page 20 Schlueter Free Flight Models 3508 Poinsettia Ave Manhattan Beach Ca 90266 Dealer Inquiries Invited 0 S PACIEiC ACE BLACK BULLET PARTIAL KITS plans &printed wood PACIFIC ACE BLACK BULLET 2O$3253O$47O 40T665ADD S2OO SHIPPVJGPOREACHITO3 KIT ORDERCA RES ADO 6I TAX