U Gary Shaw PET-Powered Retracts youre like modelers youre always lookout new ways solve little issues irritants arise building flying aircraft such innovative idea recently shared meor rather problem created through its useconcerns application Polyethylene Tetrahyde PET containers power air retract systems What PET containers ask None other 16-ounce 20-ounce oneand two-liter soda pop bottles found stores throughout country problem innovative idea appears stem fact modelers seem prefer large PET containers help power large retract systems ie Pattern quarter-Scale Giant Scale Madera racers etc Whats issue ask big bang shrapnel created overpressurized containers let go problem say its never happened Keep reading Bob Rodgers Orchard Park New York recently forwarded several graphic pictures depicting scattered remains large quarter-scale B-25 much left once-proud model other balsa plywood toothpicks As can see tail forward area model recognizable What caused model explode Bob provides following using small electrically powered emergency air pumps inside vehicle fill retract system B-25 Ziroli kit noted pressure gauge pump stopped 120 psi Since system needs 100-125 psi work properly decided disconnect pump store vehicle just sort figured since pump gauge stopped 120 psi reached its capacity Fortunately just leaned away model store pump pressure vessel model let go Splinters model flew everywhere explosion felt like someone threw lead jacket onto chest sound September 1994 29 Ziroli B-25 fuselage destroyed exploding soft drink bottle model repaired flew nine days later Left two-liter soft drink bottle used power B-25s retract system burst overpressurized N deafening ears rang hours Plywood fiberglass balsa paint scattered everywhere After recovered senses began investigate cause explosion noted two cases fuel placed near tail side model riddled stringers models midsection Looking around vehicle damage discovered holes bottom Cub wing stored ceiling above B-25 Seeing damage caused flying shrapnel comforting think face next stringers moments before explosion definitely caused excessive pressure two-liter soda pop bottle used power retracts Fortunately ringing ears subsided able repair model flew nine days later Could happen Youll never know use PET containers dont use accurate pressure gauge pump filling much pressure can PET containers safely hold recent conversation Jerry Broaderick Quality Control Division Orlandobased Constar Company PET manufacturer reveals following very hot 6000 plastic materiai blown down tube specific container mold Since mold water-jacketed cooled plastic substance quickly cools creating usable plastic container very simplified understanding Random samples various-sized containers chosen quality-control testing forwarded burst-testing chamber Containers selected testing first filled water pressurized 150 psi dont burst sampling specific lot considered satisfactory theyre forwarded bottlers use filled bottlers containers pressurized Nitrogen 73 psi filled product Jerry also mentioned experiments containers pressures above 150 psi aiways resulted violent failures damage testing chamber As described access door burst chamber covered /8-inch-thick PVC sliding hatch container fails door usually blown bits Based experience chamber Jerry surprised learn about models being turned confetti PET containers fail course pointed out what some modelers already know PET containers manufactured model aircraft retract systems Still dont think its anything worry about Think again PET failures appear widespread modelers realize stress point Bobs pictures arrived AMA few weeks after Don Lowe conversation RED MAX FUEL Power Order Formfor easy CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER starting FILL IN OTY ON THE LEFT THE TOTAL ON RIGHT Freight free power qts gals No handling charge Freight collect drums deduct 3% forsmooth takeprepay Mix qty Total qty determines price SC orders add 5% salesoffs power tax Dealer club prices avail Accept credit cards checks COD COD add $450 per carton UPS shipments add $700 per cartonfor intricate hazardous materials fee No hazard fee orders 24 gals moremaneuvers shipped motorfreightRed Max OTY FUELONE4GAL 24 GAL OtGAL 12t GAL 54 GALTOTALmakes ORDERED MIXTUREGALCASE PER GA PERGAPERGAL DRUM$AMTengine come RED MAX PREMIUM FUELalive Easy beginners andpowerful tor experts Available Synthetic castor blendspower RED MAX 0 1129 847 824757678 19023performance RED MAX 5 1236 927 902828741 23616 ____ RED MAX 1013681026999917821 29357 ____you never RED MAX 12142210661038952853 31653 _____expected RED MAX 15147511061077988885 33950 ____You can have RED MAX RACING FUELthe power Trophy winners forplanes boats cars loads documented recordsIts RED MAX2O1640123011971099984 38513 ____ RED MAX 2517941345130912021076 44746 ____phone call RED MAX 3020111508146813348 1207 53558 away Power RED MAX 4021921644160014691315 60893today RED MAX 5025131884183416831508 73861 ____ RED MAX 6027782084202818621667 84626 _____next week RED MAX6529112183212519511747 90009 ____and next RED MAX 4-CYCLE FUELyear Red Eliminates detonation &kickback 4-cy engines specially good older modelsMaxs secret 10-4 CYCLE 1412 1059 103194684729298ingredients 15-4 CYCLE 1545 1159 1128103592734681 ____ REDMAX HELICOPTER FUELkeep Extremely smooth &cool running extra defosmer & special oil helicoptersen 10 HELICOPTER144910871058971870 30802 _____ g 15HELICOPTER1582118711551060949 36184 ____lasting longer 25HELICOPTER1884141313751262113048383 ____and running 3OHELICOPTER20181514147313521211 53835 _____more REDMAXPERFORMANCEFUELpowerfully High flash point special oil foruse tuned pipes ductad fan other heavy duty applicationsthan 5 FAN 317 987 61882790 25419 _____ 10 FAN 49 87 58971870 30802 _____other 15 FAN 82 87 55106094936184 _____ RED MAX PATTERN FUEL100% money Proven best fuelfor patternengines usingpumpsand tuned pipesback 5 PATTERN 1317 961882790 25419 _____ 10 PATTERN144910871058971870 30802 _____guarantee 15 PATTERN1582118711551060949 36184you SUPER TIGER 3000 FUEL Bestfuel Super Tiger 2000-4000 enginescompletely ST 3000 8 6 917821 29357 ____satisfied RED MAX DIESEL FUELany reason Superior diesel back list popular demand customersRed Max has GAL1662 1246 1213 1113 997 39395more power OTS1215 912 887 814 729_______ better idle CUSTOM BLENDED FUEL INGREDIENTS Grand Total better will mis custom fuel formula special engine minimum gallon Fuel Ingredients available minimumwear quantities gallon Call prices items Also special 2-characteristics cycle oil big engines such SAX etc Cleaner cooler running oil other marketthan PRICES MAY CHANGE WITHOUT NOTICEother fuel 30 Model Aviation SE PRINT NAME BOX I STREET ISTATEIZIP TYPE AND NO IRATION DATE _____________ regarding same subject Upon seeing photos thought Don asked AMA forward turns out material AMA forwarded Bobs behalf unrelated story passed Don seems Mr Lowe present model next him suddenly exploded cause explosion turned out overpressurized PET container little CO2 added good measure Don described explosion deafening expressed disbelief no nearby injured flying pieces seemed amazed pop bottle could devastate model asked aware other incidents Prior story about model exploding trade show no revealed concern Since conversation Don Ive received several stories including Bobs Just coincidence sign modelers have begun use PET containers Bob also knew least two models being destroyed recentlyone during Madera air races PET container let go pits another Canada exploded giant fireball flying Roger Kemph Ontario flying Byron P-S 1 G-62 convened glow flew spewing burning glow fuel kerosene smoke tank Apparently battery shorted board caused somewhat chain reaction shorted battery melted fuel tank catching methanol fire burning fuel melted through smoke tank catching kerosene fire burning combination melted PET container retracts ka-boooomfireball over Ontario After fire rescue squad put out resulting three-acre fire thing left model smoking Byron four-bladed prop firefighters didnt think funny occurrences stress important point already mentioned Jerry Constar company pop bottles manufactured model retract systems have designed safely handle pressures above 75 psi should used nothing else Since youve read column far might have potential bombs carefully Velcroed new Yellow Aircraft F-14 Tomcat think make avoid losing model prevent getting hurt consider following tips 1 Only use containers hydrostatically tested tolerate pressures needs Never use container unless manufacturer stamps rating its side guarantee good salesman means nothing unless its indicated product 2 Stick what manufacturers provide original equipment full systems theyre required law use containers rated use provided 3 If use PET containers retract system never pressurize container over 73 psi safe limit soda pop 4 Dont try guess pressures feeling compression resistance pump just few strokes method use accurate pressure gauge 5 High temperatures cause plastic soften changes ratings dont place containers areas subjected heat have source containers might safely used application drop note Ill share information column Cyanoacrylate last months column provided little information regarding CyA indicated Id tell whats odorless CyA mysterious main ingredient appears nothing ethoxy ethyl-2-Cyanoacrylate Whats special about chemical Most people cant smell it doesnt appear make eyes burn wont dissolve foam wings yet glues things well straight ethyl-2Cyanoacrylate Id love give some health data about since Material Safety Data Sheet MSDS data base doesnt have chemical listed single element cant provide health information month Ive written several popular manufacturers both user manufacturers MSDS will share some information get response Until youre allergic CyA fumes stubborn enough continue using wear organic vapor respirator until find alternative Can See Longtime former Safety columnist John Preston forwarded letter asking propeller manufacturers dont paint prop tips color visible blade spinning correctly pointed out some manufacturers already props 12 inches long wondered companies dont sizes Excellent question several possible answers dont dont know although Id bet reason financially based get answer companies produce props Ive recently written US manufacturers know posed question interest safety would possible paint tips props manufacture color visible during rotation No answers yet Im confident question will generate some mail What consumers think about it responsibility manufacturers responsibility ensure prop tips visible spinning Drop line odel Aviation
Edition: Model Aviation - 1994/09
Page Numbers: 29, 30, 32
U Gary Shaw PET-Powered Retracts youre like modelers youre always lookout new ways solve little issues irritants arise building flying aircraft such innovative idea recently shared meor rather problem created through its useconcerns application Polyethylene Tetrahyde PET containers power air retract systems What PET containers ask None other 16-ounce 20-ounce oneand two-liter soda pop bottles found stores throughout country problem innovative idea appears stem fact modelers seem prefer large PET containers help power large retract systems ie Pattern quarter-Scale Giant Scale Madera racers etc Whats issue ask big bang shrapnel created overpressurized containers let go problem say its never happened Keep reading Bob Rodgers Orchard Park New York recently forwarded several graphic pictures depicting scattered remains large quarter-scale B-25 much left once-proud model other balsa plywood toothpicks As can see tail forward area model recognizable What caused model explode Bob provides following using small electrically powered emergency air pumps inside vehicle fill retract system B-25 Ziroli kit noted pressure gauge pump stopped 120 psi Since system needs 100-125 psi work properly decided disconnect pump store vehicle just sort figured since pump gauge stopped 120 psi reached its capacity Fortunately just leaned away model store pump pressure vessel model let go Splinters model flew everywhere explosion felt like someone threw lead jacket onto chest sound September 1994 29 Ziroli B-25 fuselage destroyed exploding soft drink bottle model repaired flew nine days later Left two-liter soft drink bottle used power B-25s retract system burst overpressurized N deafening ears rang hours Plywood fiberglass balsa paint scattered everywhere After recovered senses began investigate cause explosion noted two cases fuel placed near tail side model riddled stringers models midsection Looking around vehicle damage discovered holes bottom Cub wing stored ceiling above B-25 Seeing damage caused flying shrapnel comforting think face next stringers moments before explosion definitely caused excessive pressure two-liter soda pop bottle used power retracts Fortunately ringing ears subsided able repair model flew nine days later Could happen Youll never know use PET containers dont use accurate pressure gauge pump filling much pressure can PET containers safely hold recent conversation Jerry Broaderick Quality Control Division Orlandobased Constar Company PET manufacturer reveals following very hot 6000 plastic materiai blown down tube specific container mold Since mold water-jacketed cooled plastic substance quickly cools creating usable plastic container very simplified understanding Random samples various-sized containers chosen quality-control testing forwarded burst-testing chamber Containers selected testing first filled water pressurized 150 psi dont burst sampling specific lot considered satisfactory theyre forwarded bottlers use filled bottlers containers pressurized Nitrogen 73 psi filled product Jerry also mentioned experiments containers pressures above 150 psi aiways resulted violent failures damage testing chamber As described access door burst chamber covered /8-inch-thick PVC sliding hatch container fails door usually blown bits Based experience chamber Jerry surprised learn about models being turned confetti PET containers fail course pointed out what some modelers already know PET containers manufactured model aircraft retract systems Still dont think its anything worry about Think again PET failures appear widespread modelers realize stress point Bobs pictures arrived AMA few weeks after Don Lowe conversation RED MAX FUEL Power Order Formfor easy CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER starting FILL IN OTY ON THE LEFT THE TOTAL ON RIGHT Freight free power qts gals No handling charge Freight collect drums deduct 3% forsmooth takeprepay Mix qty Total qty determines price SC orders add 5% salesoffs power tax Dealer club prices avail Accept credit cards checks COD COD add $450 per carton UPS shipments add $700 per cartonfor intricate hazardous materials fee No hazard fee orders 24 gals moremaneuvers shipped motorfreightRed Max OTY FUELONE4GAL 24 GAL OtGAL 12t GAL 54 GALTOTALmakes ORDERED MIXTUREGALCASE PER GA PERGAPERGAL DRUM$AMTengine come RED MAX PREMIUM FUELalive Easy beginners andpowerful tor experts Available Synthetic castor blendspower RED MAX 0 1129 847 824757678 19023performance RED MAX 5 1236 927 902828741 23616 ____ RED MAX 1013681026999917821 29357 ____you never RED MAX 12142210661038952853 31653 _____expected RED MAX 15147511061077988885 33950 ____You can have RED MAX RACING FUELthe power Trophy winners forplanes boats cars loads documented recordsIts RED MAX2O1640123011971099984 38513 ____ RED MAX 2517941345130912021076 44746 ____phone call RED MAX 3020111508146813348 1207 53558 away Power RED MAX 4021921644160014691315 60893today RED MAX 5025131884183416831508 73861 ____ RED MAX 6027782084202818621667 84626 _____next week RED MAX6529112183212519511747 90009 ____and next RED MAX 4-CYCLE FUELyear Red Eliminates detonation &kickback 4-cy engines specially good older modelsMaxs secret 10-4 CYCLE 1412 1059 103194684729298ingredients 15-4 CYCLE 1545 1159 1128103592734681 ____ REDMAX HELICOPTER FUELkeep Extremely smooth &cool running extra defosmer & special oil helicoptersen 10 HELICOPTER144910871058971870 30802 _____ g 15HELICOPTER1582118711551060949 36184 ____lasting longer 25HELICOPTER1884141313751262113048383 ____and running 3OHELICOPTER20181514147313521211 53835 _____more REDMAXPERFORMANCEFUELpowerfully High flash point special oil foruse tuned pipes ductad fan other heavy duty applicationsthan 5 FAN 317 987 61882790 25419 _____ 10 FAN 49 87 58971870 30802 _____other 15 FAN 82 87 55106094936184 _____ RED MAX PATTERN FUEL100% money Proven best fuelfor patternengines usingpumpsand tuned pipesback 5 PATTERN 1317 961882790 25419 _____ 10 PATTERN144910871058971870 30802 _____guarantee 15 PATTERN1582118711551060949 36184you SUPER TIGER 3000 FUEL Bestfuel Super Tiger 2000-4000 enginescompletely ST 3000 8 6 917821 29357 ____satisfied RED MAX DIESEL FUELany reason Superior diesel back list popular demand customersRed Max has GAL1662 1246 1213 1113 997 39395more power OTS1215 912 887 814 729_______ better idle CUSTOM BLENDED FUEL INGREDIENTS Grand Total better will mis custom fuel formula special engine minimum gallon Fuel Ingredients available minimumwear quantities gallon Call prices items Also special 2-characteristics cycle oil big engines such SAX etc Cleaner cooler running oil other marketthan PRICES MAY CHANGE WITHOUT NOTICEother fuel 30 Model Aviation SE PRINT NAME BOX I STREET ISTATEIZIP TYPE AND NO IRATION DATE _____________ regarding same subject Upon seeing photos thought Don asked AMA forward turns out material AMA forwarded Bobs behalf unrelated story passed Don seems Mr Lowe present model next him suddenly exploded cause explosion turned out overpressurized PET container little CO2 added good measure Don described explosion deafening expressed disbelief no nearby injured flying pieces seemed amazed pop bottle could devastate model asked aware other incidents Prior story about model exploding trade show no revealed concern Since conversation Don Ive received several stories including Bobs Just coincidence sign modelers have begun use PET containers Bob also knew least two models being destroyed recentlyone during Madera air races PET container let go pits another Canada exploded giant fireball flying Roger Kemph Ontario flying Byron P-S 1 G-62 convened glow flew spewing burning glow fuel kerosene smoke tank Apparently battery shorted board caused somewhat chain reaction shorted battery melted fuel tank catching methanol fire burning fuel melted through smoke tank catching kerosene fire burning combination melted PET container retracts ka-boooomfireball over Ontario After fire rescue squad put out resulting three-acre fire thing left model smoking Byron four-bladed prop firefighters didnt think funny occurrences stress important point already mentioned Jerry Constar company pop bottles manufactured model retract systems have designed safely handle pressures above 75 psi should used nothing else Since youve read column far might have potential bombs carefully Velcroed new Yellow Aircraft F-14 Tomcat think make avoid losing model prevent getting hurt consider following tips 1 Only use containers hydrostatically tested tolerate pressures needs Never use container unless manufacturer stamps rating its side guarantee good salesman means nothing unless its indicated product 2 Stick what manufacturers provide original equipment full systems theyre required law use containers rated use provided 3 If use PET containers retract system never pressurize container over 73 psi safe limit soda pop 4 Dont try guess pressures feeling compression resistance pump just few strokes method use accurate pressure gauge 5 High temperatures cause plastic soften changes ratings dont place containers areas subjected heat have source containers might safely used application drop note Ill share information column Cyanoacrylate last months column provided little information regarding CyA indicated Id tell whats odorless CyA mysterious main ingredient appears nothing ethoxy ethyl-2-Cyanoacrylate Whats special about chemical Most people cant smell it doesnt appear make eyes burn wont dissolve foam wings yet glues things well straight ethyl-2Cyanoacrylate Id love give some health data about since Material Safety Data Sheet MSDS data base doesnt have chemical listed single element cant provide health information month Ive written several popular manufacturers both user manufacturers MSDS will share some information get response Until youre allergic CyA fumes stubborn enough continue using wear organic vapor respirator until find alternative Can See Longtime former Safety columnist John Preston forwarded letter asking propeller manufacturers dont paint prop tips color visible blade spinning correctly pointed out some manufacturers already props 12 inches long wondered companies dont sizes Excellent question several possible answers dont dont know although Id bet reason financially based get answer companies produce props Ive recently written US manufacturers know posed question interest safety would possible paint tips props manufacture color visible during rotation No answers yet Im confident question will generate some mail What consumers think about it responsibility manufacturers responsibility ensure prop tips visible spinning Drop line odel Aviation
Edition: Model Aviation - 1994/09
Page Numbers: 29, 30, 32
U Gary Shaw PET-Powered Retracts youre like modelers youre always lookout new ways solve little issues irritants arise building flying aircraft such innovative idea recently shared meor rather problem created through its useconcerns application Polyethylene Tetrahyde PET containers power air retract systems What PET containers ask None other 16-ounce 20-ounce oneand two-liter soda pop bottles found stores throughout country problem innovative idea appears stem fact modelers seem prefer large PET containers help power large retract systems ie Pattern quarter-Scale Giant Scale Madera racers etc Whats issue ask big bang shrapnel created overpressurized containers let go problem say its never happened Keep reading Bob Rodgers Orchard Park New York recently forwarded several graphic pictures depicting scattered remains large quarter-scale B-25 much left once-proud model other balsa plywood toothpicks As can see tail forward area model recognizable What caused model explode Bob provides following using small electrically powered emergency air pumps inside vehicle fill retract system B-25 Ziroli kit noted pressure gauge pump stopped 120 psi Since system needs 100-125 psi work properly decided disconnect pump store vehicle just sort figured since pump gauge stopped 120 psi reached its capacity Fortunately just leaned away model store pump pressure vessel model let go Splinters model flew everywhere explosion felt like someone threw lead jacket onto chest sound September 1994 29 Ziroli B-25 fuselage destroyed exploding soft drink bottle model repaired flew nine days later Left two-liter soft drink bottle used power B-25s retract system burst overpressurized N deafening ears rang hours Plywood fiberglass balsa paint scattered everywhere After recovered senses began investigate cause explosion noted two cases fuel placed near tail side model riddled stringers models midsection Looking around vehicle damage discovered holes bottom Cub wing stored ceiling above B-25 Seeing damage caused flying shrapnel comforting think face next stringers moments before explosion definitely caused excessive pressure two-liter soda pop bottle used power retracts Fortunately ringing ears subsided able repair model flew nine days later Could happen Youll never know use PET containers dont use accurate pressure gauge pump filling much pressure can PET containers safely hold recent conversation Jerry Broaderick Quality Control Division Orlandobased Constar Company PET manufacturer reveals following very hot 6000 plastic materiai blown down tube specific container mold Since mold water-jacketed cooled plastic substance quickly cools creating usable plastic container very simplified understanding Random samples various-sized containers chosen quality-control testing forwarded burst-testing chamber Containers selected testing first filled water pressurized 150 psi dont burst sampling specific lot considered satisfactory theyre forwarded bottlers use filled bottlers containers pressurized Nitrogen 73 psi filled product Jerry also mentioned experiments containers pressures above 150 psi aiways resulted violent failures damage testing chamber As described access door burst chamber covered /8-inch-thick PVC sliding hatch container fails door usually blown bits Based experience chamber Jerry surprised learn about models being turned confetti PET containers fail course pointed out what some modelers already know PET containers manufactured model aircraft retract systems Still dont think its anything worry about Think again PET failures appear widespread modelers realize stress point Bobs pictures arrived AMA few weeks after Don Lowe conversation RED MAX FUEL Power Order Formfor easy CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER starting FILL IN OTY ON THE LEFT THE TOTAL ON RIGHT Freight free power qts gals No handling charge Freight collect drums deduct 3% forsmooth takeprepay Mix qty Total qty determines price SC orders add 5% salesoffs power tax Dealer club prices avail Accept credit cards checks COD COD add $450 per carton UPS shipments add $700 per cartonfor intricate hazardous materials fee No hazard fee orders 24 gals moremaneuvers shipped motorfreightRed Max OTY FUELONE4GAL 24 GAL OtGAL 12t GAL 54 GALTOTALmakes ORDERED MIXTUREGALCASE PER GA PERGAPERGAL DRUM$AMTengine come RED MAX PREMIUM FUELalive Easy beginners andpowerful tor experts Available Synthetic castor blendspower RED MAX 0 1129 847 824757678 19023performance RED MAX 5 1236 927 902828741 23616 ____ RED MAX 1013681026999917821 29357 ____you never RED MAX 12142210661038952853 31653 _____expected RED MAX 15147511061077988885 33950 ____You can have RED MAX RACING FUELthe power Trophy winners forplanes boats cars loads documented recordsIts RED MAX2O1640123011971099984 38513 ____ RED MAX 2517941345130912021076 44746 ____phone call RED MAX 3020111508146813348 1207 53558 away Power RED MAX 4021921644160014691315 60893today RED MAX 5025131884183416831508 73861 ____ RED MAX 6027782084202818621667 84626 _____next week RED MAX6529112183212519511747 90009 ____and next RED MAX 4-CYCLE FUELyear Red Eliminates detonation &kickback 4-cy engines specially good older modelsMaxs secret 10-4 CYCLE 1412 1059 103194684729298ingredients 15-4 CYCLE 1545 1159 1128103592734681 ____ REDMAX HELICOPTER FUELkeep Extremely smooth &cool running extra defosmer & special oil helicoptersen 10 HELICOPTER144910871058971870 30802 _____ g 15HELICOPTER1582118711551060949 36184 ____lasting longer 25HELICOPTER1884141313751262113048383 ____and running 3OHELICOPTER20181514147313521211 53835 _____more REDMAXPERFORMANCEFUELpowerfully High flash point special oil foruse tuned pipes ductad fan other heavy duty applicationsthan 5 FAN 317 987 61882790 25419 _____ 10 FAN 49 87 58971870 30802 _____other 15 FAN 82 87 55106094936184 _____ RED MAX PATTERN FUEL100% money Proven best fuelfor patternengines usingpumpsand tuned pipesback 5 PATTERN 1317 961882790 25419 _____ 10 PATTERN144910871058971870 30802 _____guarantee 15 PATTERN1582118711551060949 36184you SUPER TIGER 3000 FUEL Bestfuel Super Tiger 2000-4000 enginescompletely ST 3000 8 6 917821 29357 ____satisfied RED MAX DIESEL FUELany reason Superior diesel back list popular demand customersRed Max has GAL1662 1246 1213 1113 997 39395more power OTS1215 912 887 814 729_______ better idle CUSTOM BLENDED FUEL INGREDIENTS Grand Total better will mis custom fuel formula special engine minimum gallon Fuel Ingredients available minimumwear quantities gallon Call prices items Also special 2-characteristics cycle oil big engines such SAX etc Cleaner cooler running oil other marketthan PRICES MAY CHANGE WITHOUT NOTICEother fuel 30 Model Aviation SE PRINT NAME BOX I STREET ISTATEIZIP TYPE AND NO IRATION DATE _____________ regarding same subject Upon seeing photos thought Don asked AMA forward turns out material AMA forwarded Bobs behalf unrelated story passed Don seems Mr Lowe present model next him suddenly exploded cause explosion turned out overpressurized PET container little CO2 added good measure Don described explosion deafening expressed disbelief no nearby injured flying pieces seemed amazed pop bottle could devastate model asked aware other incidents Prior story about model exploding trade show no revealed concern Since conversation Don Ive received several stories including Bobs Just coincidence sign modelers have begun use PET containers Bob also knew least two models being destroyed recentlyone during Madera air races PET container let go pits another Canada exploded giant fireball flying Roger Kemph Ontario flying Byron P-S 1 G-62 convened glow flew spewing burning glow fuel kerosene smoke tank Apparently battery shorted board caused somewhat chain reaction shorted battery melted fuel tank catching methanol fire burning fuel melted through smoke tank catching kerosene fire burning combination melted PET container retracts ka-boooomfireball over Ontario After fire rescue squad put out resulting three-acre fire thing left model smoking Byron four-bladed prop firefighters didnt think funny occurrences stress important point already mentioned Jerry Constar company pop bottles manufactured model retract systems have designed safely handle pressures above 75 psi should used nothing else Since youve read column far might have potential bombs carefully Velcroed new Yellow Aircraft F-14 Tomcat think make avoid losing model prevent getting hurt consider following tips 1 Only use containers hydrostatically tested tolerate pressures needs Never use container unless manufacturer stamps rating its side guarantee good salesman means nothing unless its indicated product 2 Stick what manufacturers provide original equipment full systems theyre required law use containers rated use provided 3 If use PET containers retract system never pressurize container over 73 psi safe limit soda pop 4 Dont try guess pressures feeling compression resistance pump just few strokes method use accurate pressure gauge 5 High temperatures cause plastic soften changes ratings dont place containers areas subjected heat have source containers might safely used application drop note Ill share information column Cyanoacrylate last months column provided little information regarding CyA indicated Id tell whats odorless CyA mysterious main ingredient appears nothing ethoxy ethyl-2-Cyanoacrylate Whats special about chemical Most people cant smell it doesnt appear make eyes burn wont dissolve foam wings yet glues things well straight ethyl-2Cyanoacrylate Id love give some health data about since Material Safety Data Sheet MSDS data base doesnt have chemical listed single element cant provide health information month Ive written several popular manufacturers both user manufacturers MSDS will share some information get response Until youre allergic CyA fumes stubborn enough continue using wear organic vapor respirator until find alternative Can See Longtime former Safety columnist John Preston forwarded letter asking propeller manufacturers dont paint prop tips color visible blade spinning correctly pointed out some manufacturers already props 12 inches long wondered companies dont sizes Excellent question several possible answers dont dont know although Id bet reason financially based get answer companies produce props Ive recently written US manufacturers know posed question interest safety would possible paint tips props manufacture color visible during rotation No answers yet Im confident question will generate some mail What consumers think about it responsibility manufacturers responsibility ensure prop tips visible spinning Drop line odel Aviation