S Cemasflisl w Plastic propellers safe Mounting engines use locknuts lockwashers Hear hear Use ear plugs power models John Preston PROPELLERSwood plastic right Injuries associ ated whirling props continue occur So please forgive think Im spending too much time talking about hazard blades front engines Two letters received during past month came manufacturers so-called plastic props both contained some safety formation Most modelers refer non-wood prop plastic prop' Some clubs have rules actually prohibit use plas tic props engines over certain displacementusually 40 cu up AMA Competition Rules RC Pylon Racing both Formula Quarter Midget specify Only wooden fixed-pitch two-blade propellers shall permitted some form discrimination against manufacturers plastic props really could certain cases Before get ting discussion pros cons wood versus plastic props lets first attempt define what mean plastic pro peller According Webster term plastic means Any numerous organic synthetic processed materials mostly ther moplastic thermosetting polymers high molecular weight can molded cast extruded drawn laminated ob jects films filaments simply stated plastic man-made material ver sus wood quite obviously occurs nat urally However some major dif ferences construction materials used plastic propellers Although Im mechanical engineer profession have lot experience plastic mate rials So reader expert field plastics objects toor would like amplify onwhat Im about say Id welcome letter Commercially-available plastic propellers model aircraft may constructed either unreinforced plastics reinforced plastics reinforcement plastic material mostly commonly achieved addition glass fibers may form continuous filaments run Continued page 14 12 Model Aviation _________________ E-1 G-ET THE VITINCT IMPRESSIOH ThAT THIS AIgFORT SITE- IXES NOT ALLOW MO[EL AIRCRAFT PATIQ1PATIO IMPORTANT Instruction Warning Sheet 1 Before using remove flash along edges propeller scraping pocket knife 2 Select correct propeller size following engine manufacturers recommendations 3 Install propeller using correct nut washer airfoil side forward securely tighten wrench Recheck after flight 4 Use Chicken Stick electric starter start engine make adjustments behind engine 5 Keep spectators least 20 feet away out path rotating propeller 6 Wear safety glasses hand protection operating model engines permit objects touch turning propeller 7 To stop engine cut off fuel supply accordance manufacturers instructions case DO NOT stop propeller hand other object 8 Inspect propeller after flight Discard propeller has nicks scratches other visible defect DO NOT repair alter way modify propeller CAUTION ROTATING PROPELLER CAN CAUSE SERIOUS PERSONAL INJURY FOLLOW THESE INSTRUCTIONS CAREFULLY ENDANNER 1981-82 World RIC Aerobatic Champi Winner 7 consecutive Las Vegas Tournament Champions Shown above Giezendanner GMP 2001 -D Digital Tachometer USA MODELING PRODUCTS INC DEPTA U PO BOX 818 5TOWN PA 19464 37-1231 ELECTRIC RETRACTS GIEZENDANNER Two Time World Champion REGULAR RETRACTS 5/32 Pattern- Up 10 lbs HEAVY DUTY RETRACTS 3/16 Scale -10 18 lbs EXTRA HEAVY DUTY RETRACTS 1/4 Big Ones 18 50 lbs retract Slip Clutch prevent jamming stripping gears ELECTRONIC DIGITAL TACHOMETERS GMP-2001-R 2001-D Visible Visible display ondisplay ble low batteryVisible low battery displaydisplay 2 Bladed only2 & 3 Bladed props Y liquid display1A liquid display Crystal controlledCrystal controlled Catalog Available Ideal beginner well master flier CHARGE IT Left GMP-2001-R IRegular Right GMP-2001-D Deluxe Dealers Invited Yes have Giezendanner Wipers 3 Bladad Low-Noise Glass Filled Props tip-to-tip form chopped fibers randomly dispersed within plastic Some custom-produced props reinforced tip-to-tip filaments carbon fibera material considerably stronger stiffer glass fibers Perhaps commonly-seen plastic props todays flying fields black ones fabricated glass-filled nylon use chopped glass fibers strengthen nylon material ad dition glass fibers undoubtedly does add strength should regarded indestructible letters Ive received appears modern high-revving engine 40-60 cu range would safer equipped glass-filled nylon prop Blade separations can occur reason manufacturers columns writer tell avoid standing path rotating prop could resistance damage caused contact ground during bad landing afforded glass reinforcement may factor leads blade separation later date Similar abuse wooden prop generally causes breakagewhich results replacement models propeller Whatever type prop elect use after ground contact no matter slight always perform close inspection damage know props ex pensive today 10 years ago still cheap compared trip hospital emergency room Less common reinforced plastic props reinforcing fibers run tip tip Such fibers being continuous give propeller high resistance blade sep aration much same does grain wood propeller theory control can exercise over production continuous-filament reinforced plastic prop better can exercise over grow ing tree should least sus ceptible blade separation highrevving engine Tests would have conducted prove theory pre sent time know source domestically-produced continuous-filament reinforced plastic props Prop Shop Broomfield CO props manufactured epoxy resin reinforced fiberglass filaments sold variety sizes tractor pusher stallation few three-blade sizes ultra-high-revving engines thing youve experienced blade separations using wooden props might con sider such propeller Unfortunately serious accidents can occur blades separate run ning propeller frequent incidents among reported result mod elers feeding fingers through arc turning propeller such situation stronger prop likelihood serious injury No matter what type prop use keep fingersout its arc Continued page 82 Now Kit Form Save easy assemble 4 channel kit expandable 7 OnIy$ 7995 service parts available past manu factured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work Send 8Sl complete catalog FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitoring battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack I600mAH & 1200mAH extra Expan ape 95 wIth large linear servos 2995 wIth small rotary servos Full Command Systems509 487-2122 908 E Rosewood Spokane WA 99208 14 Model Aviation AL-TEC PROdUCTS INc INTRODUCES NEW BUILDING CONCEPT unique Al-I-SpAR m&2 Al-T-SpAR 2 [patent pending] integral component uni-structure membered light weight Alum inum beam T spar Specially planned total model aircraft world mind STRONG easyto use balsa foam wings tail planes Spar material Aluminum alloy 018 nominal thick AIISpARl .8ozIft1/8x3I8 hollow flangea 7/8 overall height $200 per lineal ft 3ft 4ft ALISpAR2 1 4 az/ft 1/8 x 3/8 hollow flanges 1 t $215 per ml ft available 4 ft ALjoilvER090 x 339 x 6 2024 T6 Aluminum $100 ea TijoiNER above Al-joiner dimensions grade 4 A/C titanium 151 00 eal AI-T-Spars proportioned Y dimensions Al-I-Spars Price length same Products Inc ____________________ Boardman OH 44512 Send $100 Building Guide AI-Tec Product list deducted form 1st order WINNERS Flat platinum coil element Ceramic core Idle Bar Idle cap Send SlOO catalogue S PO Box 31228 indpls IN 4623 82 Model Aviation Letters Editor Continued oaae 10 case add transfer switch can attach either transmitter output stage receiver input stage antenna safety transfer switch might also disconnect power input transmitter output stage module RF board whatever supplying power receiver Thus unit would able operate given time could right now tools available modeler second request asking monitor also sound alarm interfering signal appears bit difficult satisfy want know what interference received airplanes position Thus proper solution have airplane notify its problem Servo-Gard device available check ads inserts between throttle servo receiver cuts back engine interference received battery pack voltage drops below pre set level Depending situation either glide down idle power crash engine turning slowly Putting sensor transmitter requested introduces prob lem finding very weak signal inter ference hiding under very strong transmission Since pre suming two signals hare similar properties identical frequencies know problem discrimina tion technically difficult read expensive Thus unlikely such device will appear suggestions appreciated Please keep sending George M Myers Hicksville NY keep mind can learn lot about possibility interference particularly presence someone else channel simply turning receiver before flight watching listening inter ference noted flight resulting some unwanted control input means immediately throttle back thats possible land quickly can Safety/Preston Continued page 14 During August letter received editor Model Aviation Fred Jamieson Windsor Propeller Company products merchandised under brand name Master Airscrew glassreinforced nylon propellers black color Fred enclosed sheet accom panies propellers lists eight tips should followed no matter what type brand prop using reads given box additional tip Ive mentioned several times before regard black pro pellers take time paint tips bright color running black props tend less visible wooden variety Brightly-colored tips might alert props presence minimize possibility will feed fingers through its arc wind up discussion propeller safety article Don Parks editor Davison Aviator News illustrates pro peller safety very much responsibility user title Dons account Watch Props No sure just what happened cluding Gary usually case something does happen happens fast over damage done before can react way know Gary started engine blurp Gary staggering backwards prop went hundreds pieces hit him chest cut him just under nose cigar smoking shredded basically left what side mouth Something got right eye possibly part shredded cigar tunately glasses As stum bled backwards attempt get away plane something hit him hard enough daze him knock him flat Garys credit plane cradle started could come forward enough actually run him did appear edge carpet kneeling sucked prop may well have started whole sequence well never know sure thankful Gary seriously hurt queasy feeling witnesses stomachs pleasant dont want anyone else experience Please careful telephone conversation recently area modeler subject lockwashers mounting bolts and/or nuts engines engine mounts Personally recommend use may carry over training engineer served five-year apprenticeship British aircraft full-scale manufacturer Did ever see full-scale aircraft didnt have positive locking system engine mounting bolts model en gine installations favor lockwashers toothlike points either internal external Im sure correct designation Spring washers can also used experience less likely lock engine installation mount has tapped holes lockwashers go under head bolt through-bolts nuts used lockwashers would installed under nuts Whatever elect use periodic check mounting bolts mandatory Also dont forget muffler attachment fasteners Ive seen number mufflers disappear flight beContinued page 92 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Gal Price Drum Price TypeNitro %LubricantFreight PaidFreight-Collect FAI0%Synthetic$ 675$13995 5s5%Synthetic$ 775$21995 Sc5%Castor$ 775$21995 4cyl7%Castor$ 850$28995 lOs100/0Synthetic$ 895$32995 lOc100/0Castor$ 895$32995 R/G120/o Syn & Castor$ 995$34995 iSs1S0/oSynthetic$ 995$34995 20c200/0Castor$1395$51995 25s25%Synthetic$1495$52995 4040%lSSyn-5 Castor$1995$72995 5050%Synthetic$2395$89595 6060%Synthetic$2695$99595 PT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/0 Asstd OK 64 Gal Orders Deduct 10% Asstd OK SHELDONS Hours HOBBY SHOP Mon-Wed Fri & Sat 3157 Alum Rock Avenue 0-530 Thur 930-900 $165San Jose California 95127 M/C VISA Sun 1200-500 1 December 1983 83 An Catalog Twelve page-Fully Illustrated complete details on. MUFFLERS ENGINE MOUNTS ENGINE TESTING EQUIP SCALE ACCESSORIES SMOKE KITS FTC Send $100 NEW GLASS FILLED MOTOR MOUNTS 0405 1011 1519 2025 3035 4045 40451 5060 6010 195 225 235 245 265 275 300 325 325 OEM BULK INQUIRES INVITED Flat bottom nose gear Featuring LONG GLASS FILLED NYLON FOR STRENGTH AND STABILITY Alignment Lines Mounting Interchangeable K raft SEE YOUR DEALER OR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 ARSA COOt 5 3 38 5 6 92 Model Aviation Safety/Preston Continued page 83 cause attaching bolts checked see tight and/or locked Preflight transmitter checks August issue column printed letter modeler regarding hazard taking off transmitter mixer switch accidentally left wrong position letter Nick Fiorentino Edison NJ states 1 realized problem area could cause unsafe condition solution replace mixer switch threeplace locking switch made ALCO part number MTL- 106E Most large electronics supply houses should able get Perhaps radio manufacturers should take note Nicks suggestion install locking switches mixers stan dard practice locking switch preflight check should include inspection whistles bells trans mitter wind up months safety column word about noise hearing impairment comes mind after recent talk about Presidents partial hearing loss attributed discharge gun close ear during career film star cowboy spend lot time around screaming model aircraft engine might want consider use ear plugs EAR Corporation has some approved various State Fed eral agencies appear would comfortable wear Made closed-cell polymer foam inserted ear canal dont have price interested drop line EAR Corp 7911 Zionsville Rd. Indianapolis IN 46268 Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Grand Opening/Mankowski Continued oaoe 18 bets friends donated Building Fund also enshrined throughout building manufacturer has name bronze plaque railing initial members 1983 everyone participated birth Aero modeling Center threshold aeromodel ings future has proven convincing fashion com munity can band together rally accomplish large goaL have created unique facility its kind entire world plans uses facility limited collective imagination creative communitiesaeromodelers Continued page 129 astic New Kit Coverite Half ke takes long time complete kit worth wait new Gee Bee Model E utterly magnificent & anyone can fly it should see radial cowl molded warner engine
Edition: Model Aviation - 1983/12
Page Numbers: 12, 14, 82, 83, 92
S Cemasflisl w Plastic propellers safe Mounting engines use locknuts lockwashers Hear hear Use ear plugs power models John Preston PROPELLERSwood plastic right Injuries associ ated whirling props continue occur So please forgive think Im spending too much time talking about hazard blades front engines Two letters received during past month came manufacturers so-called plastic props both contained some safety formation Most modelers refer non-wood prop plastic prop' Some clubs have rules actually prohibit use plas tic props engines over certain displacementusually 40 cu up AMA Competition Rules RC Pylon Racing both Formula Quarter Midget specify Only wooden fixed-pitch two-blade propellers shall permitted some form discrimination against manufacturers plastic props really could certain cases Before get ting discussion pros cons wood versus plastic props lets first attempt define what mean plastic pro peller According Webster term plastic means Any numerous organic synthetic processed materials mostly ther moplastic thermosetting polymers high molecular weight can molded cast extruded drawn laminated ob jects films filaments simply stated plastic man-made material ver sus wood quite obviously occurs nat urally However some major dif ferences construction materials used plastic propellers Although Im mechanical engineer profession have lot experience plastic mate rials So reader expert field plastics objects toor would like amplify onwhat Im about say Id welcome letter Commercially-available plastic propellers model aircraft may constructed either unreinforced plastics reinforced plastics reinforcement plastic material mostly commonly achieved addition glass fibers may form continuous filaments run Continued page 14 12 Model Aviation _________________ E-1 G-ET THE VITINCT IMPRESSIOH ThAT THIS AIgFORT SITE- IXES NOT ALLOW MO[EL AIRCRAFT PATIQ1PATIO IMPORTANT Instruction Warning Sheet 1 Before using remove flash along edges propeller scraping pocket knife 2 Select correct propeller size following engine manufacturers recommendations 3 Install propeller using correct nut washer airfoil side forward securely tighten wrench Recheck after flight 4 Use Chicken Stick electric starter start engine make adjustments behind engine 5 Keep spectators least 20 feet away out path rotating propeller 6 Wear safety glasses hand protection operating model engines permit objects touch turning propeller 7 To stop engine cut off fuel supply accordance manufacturers instructions case DO NOT stop propeller hand other object 8 Inspect propeller after flight Discard propeller has nicks scratches other visible defect DO NOT repair alter way modify propeller CAUTION ROTATING PROPELLER CAN CAUSE SERIOUS PERSONAL INJURY FOLLOW THESE INSTRUCTIONS CAREFULLY ENDANNER 1981-82 World RIC Aerobatic Champi Winner 7 consecutive Las Vegas Tournament Champions Shown above Giezendanner GMP 2001 -D Digital Tachometer USA MODELING PRODUCTS INC DEPTA U PO BOX 818 5TOWN PA 19464 37-1231 ELECTRIC RETRACTS GIEZENDANNER Two Time World Champion REGULAR RETRACTS 5/32 Pattern- Up 10 lbs HEAVY DUTY RETRACTS 3/16 Scale -10 18 lbs EXTRA HEAVY DUTY RETRACTS 1/4 Big Ones 18 50 lbs retract Slip Clutch prevent jamming stripping gears ELECTRONIC DIGITAL TACHOMETERS GMP-2001-R 2001-D Visible Visible display ondisplay ble low batteryVisible low battery displaydisplay 2 Bladed only2 & 3 Bladed props Y liquid display1A liquid display Crystal controlledCrystal controlled Catalog Available Ideal beginner well master flier CHARGE IT Left GMP-2001-R IRegular Right GMP-2001-D Deluxe Dealers Invited Yes have Giezendanner Wipers 3 Bladad Low-Noise Glass Filled Props tip-to-tip form chopped fibers randomly dispersed within plastic Some custom-produced props reinforced tip-to-tip filaments carbon fibera material considerably stronger stiffer glass fibers Perhaps commonly-seen plastic props todays flying fields black ones fabricated glass-filled nylon use chopped glass fibers strengthen nylon material ad dition glass fibers undoubtedly does add strength should regarded indestructible letters Ive received appears modern high-revving engine 40-60 cu range would safer equipped glass-filled nylon prop Blade separations can occur reason manufacturers columns writer tell avoid standing path rotating prop could resistance damage caused contact ground during bad landing afforded glass reinforcement may factor leads blade separation later date Similar abuse wooden prop generally causes breakagewhich results replacement models propeller Whatever type prop elect use after ground contact no matter slight always perform close inspection damage know props ex pensive today 10 years ago still cheap compared trip hospital emergency room Less common reinforced plastic props reinforcing fibers run tip tip Such fibers being continuous give propeller high resistance blade sep aration much same does grain wood propeller theory control can exercise over production continuous-filament reinforced plastic prop better can exercise over grow ing tree should least sus ceptible blade separation highrevving engine Tests would have conducted prove theory pre sent time know source domestically-produced continuous-filament reinforced plastic props Prop Shop Broomfield CO props manufactured epoxy resin reinforced fiberglass filaments sold variety sizes tractor pusher stallation few three-blade sizes ultra-high-revving engines thing youve experienced blade separations using wooden props might con sider such propeller Unfortunately serious accidents can occur blades separate run ning propeller frequent incidents among reported result mod elers feeding fingers through arc turning propeller such situation stronger prop likelihood serious injury No matter what type prop use keep fingersout its arc Continued page 82 Now Kit Form Save easy assemble 4 channel kit expandable 7 OnIy$ 7995 service parts available past manu factured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work Send 8Sl complete catalog FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitoring battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack I600mAH & 1200mAH extra Expan ape 95 wIth large linear servos 2995 wIth small rotary servos Full Command Systems509 487-2122 908 E Rosewood Spokane WA 99208 14 Model Aviation AL-TEC PROdUCTS INc INTRODUCES NEW BUILDING CONCEPT unique Al-I-SpAR m&2 Al-T-SpAR 2 [patent pending] integral component uni-structure membered light weight Alum inum beam T spar Specially planned total model aircraft world mind STRONG easyto use balsa foam wings tail planes Spar material Aluminum alloy 018 nominal thick AIISpARl .8ozIft1/8x3I8 hollow flangea 7/8 overall height $200 per lineal ft 3ft 4ft ALISpAR2 1 4 az/ft 1/8 x 3/8 hollow flanges 1 t $215 per ml ft available 4 ft ALjoilvER090 x 339 x 6 2024 T6 Aluminum $100 ea TijoiNER above Al-joiner dimensions grade 4 A/C titanium 151 00 eal AI-T-Spars proportioned Y dimensions Al-I-Spars Price length same Products Inc ____________________ Boardman OH 44512 Send $100 Building Guide AI-Tec Product list deducted form 1st order WINNERS Flat platinum coil element Ceramic core Idle Bar Idle cap Send SlOO catalogue S PO Box 31228 indpls IN 4623 82 Model Aviation Letters Editor Continued oaae 10 case add transfer switch can attach either transmitter output stage receiver input stage antenna safety transfer switch might also disconnect power input transmitter output stage module RF board whatever supplying power receiver Thus unit would able operate given time could right now tools available modeler second request asking monitor also sound alarm interfering signal appears bit difficult satisfy want know what interference received airplanes position Thus proper solution have airplane notify its problem Servo-Gard device available check ads inserts between throttle servo receiver cuts back engine interference received battery pack voltage drops below pre set level Depending situation either glide down idle power crash engine turning slowly Putting sensor transmitter requested introduces prob lem finding very weak signal inter ference hiding under very strong transmission Since pre suming two signals hare similar properties identical frequencies know problem discrimina tion technically difficult read expensive Thus unlikely such device will appear suggestions appreciated Please keep sending George M Myers Hicksville NY keep mind can learn lot about possibility interference particularly presence someone else channel simply turning receiver before flight watching listening inter ference noted flight resulting some unwanted control input means immediately throttle back thats possible land quickly can Safety/Preston Continued page 14 During August letter received editor Model Aviation Fred Jamieson Windsor Propeller Company products merchandised under brand name Master Airscrew glassreinforced nylon propellers black color Fred enclosed sheet accom panies propellers lists eight tips should followed no matter what type brand prop using reads given box additional tip Ive mentioned several times before regard black pro pellers take time paint tips bright color running black props tend less visible wooden variety Brightly-colored tips might alert props presence minimize possibility will feed fingers through its arc wind up discussion propeller safety article Don Parks editor Davison Aviator News illustrates pro peller safety very much responsibility user title Dons account Watch Props No sure just what happened cluding Gary usually case something does happen happens fast over damage done before can react way know Gary started engine blurp Gary staggering backwards prop went hundreds pieces hit him chest cut him just under nose cigar smoking shredded basically left what side mouth Something got right eye possibly part shredded cigar tunately glasses As stum bled backwards attempt get away plane something hit him hard enough daze him knock him flat Garys credit plane cradle started could come forward enough actually run him did appear edge carpet kneeling sucked prop may well have started whole sequence well never know sure thankful Gary seriously hurt queasy feeling witnesses stomachs pleasant dont want anyone else experience Please careful telephone conversation recently area modeler subject lockwashers mounting bolts and/or nuts engines engine mounts Personally recommend use may carry over training engineer served five-year apprenticeship British aircraft full-scale manufacturer Did ever see full-scale aircraft didnt have positive locking system engine mounting bolts model en gine installations favor lockwashers toothlike points either internal external Im sure correct designation Spring washers can also used experience less likely lock engine installation mount has tapped holes lockwashers go under head bolt through-bolts nuts used lockwashers would installed under nuts Whatever elect use periodic check mounting bolts mandatory Also dont forget muffler attachment fasteners Ive seen number mufflers disappear flight beContinued page 92 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Gal Price Drum Price TypeNitro %LubricantFreight PaidFreight-Collect FAI0%Synthetic$ 675$13995 5s5%Synthetic$ 775$21995 Sc5%Castor$ 775$21995 4cyl7%Castor$ 850$28995 lOs100/0Synthetic$ 895$32995 lOc100/0Castor$ 895$32995 R/G120/o Syn & Castor$ 995$34995 iSs1S0/oSynthetic$ 995$34995 20c200/0Castor$1395$51995 25s25%Synthetic$1495$52995 4040%lSSyn-5 Castor$1995$72995 5050%Synthetic$2395$89595 6060%Synthetic$2695$99595 PT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/0 Asstd OK 64 Gal Orders Deduct 10% Asstd OK SHELDONS Hours HOBBY SHOP Mon-Wed Fri & Sat 3157 Alum Rock Avenue 0-530 Thur 930-900 $165San Jose California 95127 M/C VISA Sun 1200-500 1 December 1983 83 An Catalog Twelve page-Fully Illustrated complete details on. MUFFLERS ENGINE MOUNTS ENGINE TESTING EQUIP SCALE ACCESSORIES SMOKE KITS FTC Send $100 NEW GLASS FILLED MOTOR MOUNTS 0405 1011 1519 2025 3035 4045 40451 5060 6010 195 225 235 245 265 275 300 325 325 OEM BULK INQUIRES INVITED Flat bottom nose gear Featuring LONG GLASS FILLED NYLON FOR STRENGTH AND STABILITY Alignment Lines Mounting Interchangeable K raft SEE YOUR DEALER OR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 ARSA COOt 5 3 38 5 6 92 Model Aviation Safety/Preston Continued page 83 cause attaching bolts checked see tight and/or locked Preflight transmitter checks August issue column printed letter modeler regarding hazard taking off transmitter mixer switch accidentally left wrong position letter Nick Fiorentino Edison NJ states 1 realized problem area could cause unsafe condition solution replace mixer switch threeplace locking switch made ALCO part number MTL- 106E Most large electronics supply houses should able get Perhaps radio manufacturers should take note Nicks suggestion install locking switches mixers stan dard practice locking switch preflight check should include inspection whistles bells trans mitter wind up months safety column word about noise hearing impairment comes mind after recent talk about Presidents partial hearing loss attributed discharge gun close ear during career film star cowboy spend lot time around screaming model aircraft engine might want consider use ear plugs EAR Corporation has some approved various State Fed eral agencies appear would comfortable wear Made closed-cell polymer foam inserted ear canal dont have price interested drop line EAR Corp 7911 Zionsville Rd. Indianapolis IN 46268 Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Grand Opening/Mankowski Continued oaoe 18 bets friends donated Building Fund also enshrined throughout building manufacturer has name bronze plaque railing initial members 1983 everyone participated birth Aero modeling Center threshold aeromodel ings future has proven convincing fashion com munity can band together rally accomplish large goaL have created unique facility its kind entire world plans uses facility limited collective imagination creative communitiesaeromodelers Continued page 129 astic New Kit Coverite Half ke takes long time complete kit worth wait new Gee Bee Model E utterly magnificent & anyone can fly it should see radial cowl molded warner engine
Edition: Model Aviation - 1983/12
Page Numbers: 12, 14, 82, 83, 92
S Cemasflisl w Plastic propellers safe Mounting engines use locknuts lockwashers Hear hear Use ear plugs power models John Preston PROPELLERSwood plastic right Injuries associ ated whirling props continue occur So please forgive think Im spending too much time talking about hazard blades front engines Two letters received during past month came manufacturers so-called plastic props both contained some safety formation Most modelers refer non-wood prop plastic prop' Some clubs have rules actually prohibit use plas tic props engines over certain displacementusually 40 cu up AMA Competition Rules RC Pylon Racing both Formula Quarter Midget specify Only wooden fixed-pitch two-blade propellers shall permitted some form discrimination against manufacturers plastic props really could certain cases Before get ting discussion pros cons wood versus plastic props lets first attempt define what mean plastic pro peller According Webster term plastic means Any numerous organic synthetic processed materials mostly ther moplastic thermosetting polymers high molecular weight can molded cast extruded drawn laminated ob jects films filaments simply stated plastic man-made material ver sus wood quite obviously occurs nat urally However some major dif ferences construction materials used plastic propellers Although Im mechanical engineer profession have lot experience plastic mate rials So reader expert field plastics objects toor would like amplify onwhat Im about say Id welcome letter Commercially-available plastic propellers model aircraft may constructed either unreinforced plastics reinforced plastics reinforcement plastic material mostly commonly achieved addition glass fibers may form continuous filaments run Continued page 14 12 Model Aviation _________________ E-1 G-ET THE VITINCT IMPRESSIOH ThAT THIS AIgFORT SITE- IXES NOT ALLOW MO[EL AIRCRAFT PATIQ1PATIO IMPORTANT Instruction Warning Sheet 1 Before using remove flash along edges propeller scraping pocket knife 2 Select correct propeller size following engine manufacturers recommendations 3 Install propeller using correct nut washer airfoil side forward securely tighten wrench Recheck after flight 4 Use Chicken Stick electric starter start engine make adjustments behind engine 5 Keep spectators least 20 feet away out path rotating propeller 6 Wear safety glasses hand protection operating model engines permit objects touch turning propeller 7 To stop engine cut off fuel supply accordance manufacturers instructions case DO NOT stop propeller hand other object 8 Inspect propeller after flight Discard propeller has nicks scratches other visible defect DO NOT repair alter way modify propeller CAUTION ROTATING PROPELLER CAN CAUSE SERIOUS PERSONAL INJURY FOLLOW THESE INSTRUCTIONS CAREFULLY ENDANNER 1981-82 World RIC Aerobatic Champi Winner 7 consecutive Las Vegas Tournament Champions Shown above Giezendanner GMP 2001 -D Digital Tachometer USA MODELING PRODUCTS INC DEPTA U PO BOX 818 5TOWN PA 19464 37-1231 ELECTRIC RETRACTS GIEZENDANNER Two Time World Champion REGULAR RETRACTS 5/32 Pattern- Up 10 lbs HEAVY DUTY RETRACTS 3/16 Scale -10 18 lbs EXTRA HEAVY DUTY RETRACTS 1/4 Big Ones 18 50 lbs retract Slip Clutch prevent jamming stripping gears ELECTRONIC DIGITAL TACHOMETERS GMP-2001-R 2001-D Visible Visible display ondisplay ble low batteryVisible low battery displaydisplay 2 Bladed only2 & 3 Bladed props Y liquid display1A liquid display Crystal controlledCrystal controlled Catalog Available Ideal beginner well master flier CHARGE IT Left GMP-2001-R IRegular Right GMP-2001-D Deluxe Dealers Invited Yes have Giezendanner Wipers 3 Bladad Low-Noise Glass Filled Props tip-to-tip form chopped fibers randomly dispersed within plastic Some custom-produced props reinforced tip-to-tip filaments carbon fibera material considerably stronger stiffer glass fibers Perhaps commonly-seen plastic props todays flying fields black ones fabricated glass-filled nylon use chopped glass fibers strengthen nylon material ad dition glass fibers undoubtedly does add strength should regarded indestructible letters Ive received appears modern high-revving engine 40-60 cu range would safer equipped glass-filled nylon prop Blade separations can occur reason manufacturers columns writer tell avoid standing path rotating prop could resistance damage caused contact ground during bad landing afforded glass reinforcement may factor leads blade separation later date Similar abuse wooden prop generally causes breakagewhich results replacement models propeller Whatever type prop elect use after ground contact no matter slight always perform close inspection damage know props ex pensive today 10 years ago still cheap compared trip hospital emergency room Less common reinforced plastic props reinforcing fibers run tip tip Such fibers being continuous give propeller high resistance blade sep aration much same does grain wood propeller theory control can exercise over production continuous-filament reinforced plastic prop better can exercise over grow ing tree should least sus ceptible blade separation highrevving engine Tests would have conducted prove theory pre sent time know source domestically-produced continuous-filament reinforced plastic props Prop Shop Broomfield CO props manufactured epoxy resin reinforced fiberglass filaments sold variety sizes tractor pusher stallation few three-blade sizes ultra-high-revving engines thing youve experienced blade separations using wooden props might con sider such propeller Unfortunately serious accidents can occur blades separate run ning propeller frequent incidents among reported result mod elers feeding fingers through arc turning propeller such situation stronger prop likelihood serious injury No matter what type prop use keep fingersout its arc Continued page 82 Now Kit Form Save easy assemble 4 channel kit expandable 7 OnIy$ 7995 service parts available past manu factured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work Send 8Sl complete catalog FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitoring battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack I600mAH & 1200mAH extra Expan ape 95 wIth large linear servos 2995 wIth small rotary servos Full Command Systems509 487-2122 908 E Rosewood Spokane WA 99208 14 Model Aviation AL-TEC PROdUCTS INc INTRODUCES NEW BUILDING CONCEPT unique Al-I-SpAR m&2 Al-T-SpAR 2 [patent pending] integral component uni-structure membered light weight Alum inum beam T spar Specially planned total model aircraft world mind STRONG easyto use balsa foam wings tail planes Spar material Aluminum alloy 018 nominal thick AIISpARl .8ozIft1/8x3I8 hollow flangea 7/8 overall height $200 per lineal ft 3ft 4ft ALISpAR2 1 4 az/ft 1/8 x 3/8 hollow flanges 1 t $215 per ml ft available 4 ft ALjoilvER090 x 339 x 6 2024 T6 Aluminum $100 ea TijoiNER above Al-joiner dimensions grade 4 A/C titanium 151 00 eal AI-T-Spars proportioned Y dimensions Al-I-Spars Price length same Products Inc ____________________ Boardman OH 44512 Send $100 Building Guide AI-Tec Product list deducted form 1st order WINNERS Flat platinum coil element Ceramic core Idle Bar Idle cap Send SlOO catalogue S PO Box 31228 indpls IN 4623 82 Model Aviation Letters Editor Continued oaae 10 case add transfer switch can attach either transmitter output stage receiver input stage antenna safety transfer switch might also disconnect power input transmitter output stage module RF board whatever supplying power receiver Thus unit would able operate given time could right now tools available modeler second request asking monitor also sound alarm interfering signal appears bit difficult satisfy want know what interference received airplanes position Thus proper solution have airplane notify its problem Servo-Gard device available check ads inserts between throttle servo receiver cuts back engine interference received battery pack voltage drops below pre set level Depending situation either glide down idle power crash engine turning slowly Putting sensor transmitter requested introduces prob lem finding very weak signal inter ference hiding under very strong transmission Since pre suming two signals hare similar properties identical frequencies know problem discrimina tion technically difficult read expensive Thus unlikely such device will appear suggestions appreciated Please keep sending George M Myers Hicksville NY keep mind can learn lot about possibility interference particularly presence someone else channel simply turning receiver before flight watching listening inter ference noted flight resulting some unwanted control input means immediately throttle back thats possible land quickly can Safety/Preston Continued page 14 During August letter received editor Model Aviation Fred Jamieson Windsor Propeller Company products merchandised under brand name Master Airscrew glassreinforced nylon propellers black color Fred enclosed sheet accom panies propellers lists eight tips should followed no matter what type brand prop using reads given box additional tip Ive mentioned several times before regard black pro pellers take time paint tips bright color running black props tend less visible wooden variety Brightly-colored tips might alert props presence minimize possibility will feed fingers through its arc wind up discussion propeller safety article Don Parks editor Davison Aviator News illustrates pro peller safety very much responsibility user title Dons account Watch Props No sure just what happened cluding Gary usually case something does happen happens fast over damage done before can react way know Gary started engine blurp Gary staggering backwards prop went hundreds pieces hit him chest cut him just under nose cigar smoking shredded basically left what side mouth Something got right eye possibly part shredded cigar tunately glasses As stum bled backwards attempt get away plane something hit him hard enough daze him knock him flat Garys credit plane cradle started could come forward enough actually run him did appear edge carpet kneeling sucked prop may well have started whole sequence well never know sure thankful Gary seriously hurt queasy feeling witnesses stomachs pleasant dont want anyone else experience Please careful telephone conversation recently area modeler subject lockwashers mounting bolts and/or nuts engines engine mounts Personally recommend use may carry over training engineer served five-year apprenticeship British aircraft full-scale manufacturer Did ever see full-scale aircraft didnt have positive locking system engine mounting bolts model en gine installations favor lockwashers toothlike points either internal external Im sure correct designation Spring washers can also used experience less likely lock engine installation mount has tapped holes lockwashers go under head bolt through-bolts nuts used lockwashers would installed under nuts Whatever elect use periodic check mounting bolts mandatory Also dont forget muffler attachment fasteners Ive seen number mufflers disappear flight beContinued page 92 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Gal Price Drum Price TypeNitro %LubricantFreight PaidFreight-Collect FAI0%Synthetic$ 675$13995 5s5%Synthetic$ 775$21995 Sc5%Castor$ 775$21995 4cyl7%Castor$ 850$28995 lOs100/0Synthetic$ 895$32995 lOc100/0Castor$ 895$32995 R/G120/o Syn & Castor$ 995$34995 iSs1S0/oSynthetic$ 995$34995 20c200/0Castor$1395$51995 25s25%Synthetic$1495$52995 4040%lSSyn-5 Castor$1995$72995 5050%Synthetic$2395$89595 6060%Synthetic$2695$99595 PT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/0 Asstd OK 64 Gal Orders Deduct 10% Asstd OK SHELDONS Hours HOBBY SHOP Mon-Wed Fri & Sat 3157 Alum Rock Avenue 0-530 Thur 930-900 $165San Jose California 95127 M/C VISA Sun 1200-500 1 December 1983 83 An Catalog Twelve page-Fully Illustrated complete details on. MUFFLERS ENGINE MOUNTS ENGINE TESTING EQUIP SCALE ACCESSORIES SMOKE KITS FTC Send $100 NEW GLASS FILLED MOTOR MOUNTS 0405 1011 1519 2025 3035 4045 40451 5060 6010 195 225 235 245 265 275 300 325 325 OEM BULK INQUIRES INVITED Flat bottom nose gear Featuring LONG GLASS FILLED NYLON FOR STRENGTH AND STABILITY Alignment Lines Mounting Interchangeable K raft SEE YOUR DEALER OR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 ARSA COOt 5 3 38 5 6 92 Model Aviation Safety/Preston Continued page 83 cause attaching bolts checked see tight and/or locked Preflight transmitter checks August issue column printed letter modeler regarding hazard taking off transmitter mixer switch accidentally left wrong position letter Nick Fiorentino Edison NJ states 1 realized problem area could cause unsafe condition solution replace mixer switch threeplace locking switch made ALCO part number MTL- 106E Most large electronics supply houses should able get Perhaps radio manufacturers should take note Nicks suggestion install locking switches mixers stan dard practice locking switch preflight check should include inspection whistles bells trans mitter wind up months safety column word about noise hearing impairment comes mind after recent talk about Presidents partial hearing loss attributed discharge gun close ear during career film star cowboy spend lot time around screaming model aircraft engine might want consider use ear plugs EAR Corporation has some approved various State Fed eral agencies appear would comfortable wear Made closed-cell polymer foam inserted ear canal dont have price interested drop line EAR Corp 7911 Zionsville Rd. Indianapolis IN 46268 Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Grand Opening/Mankowski Continued oaoe 18 bets friends donated Building Fund also enshrined throughout building manufacturer has name bronze plaque railing initial members 1983 everyone participated birth Aero modeling Center threshold aeromodel ings future has proven convincing fashion com munity can band together rally accomplish large goaL have created unique facility its kind entire world plans uses facility limited collective imagination creative communitiesaeromodelers Continued page 129 astic New Kit Coverite Half ke takes long time complete kit worth wait new Gee Bee Model E utterly magnificent & anyone can fly it should see radial cowl molded warner engine
Edition: Model Aviation - 1983/12
Page Numbers: 12, 14, 82, 83, 92
S Cemasflisl w Plastic propellers safe Mounting engines use locknuts lockwashers Hear hear Use ear plugs power models John Preston PROPELLERSwood plastic right Injuries associ ated whirling props continue occur So please forgive think Im spending too much time talking about hazard blades front engines Two letters received during past month came manufacturers so-called plastic props both contained some safety formation Most modelers refer non-wood prop plastic prop' Some clubs have rules actually prohibit use plas tic props engines over certain displacementusually 40 cu up AMA Competition Rules RC Pylon Racing both Formula Quarter Midget specify Only wooden fixed-pitch two-blade propellers shall permitted some form discrimination against manufacturers plastic props really could certain cases Before get ting discussion pros cons wood versus plastic props lets first attempt define what mean plastic pro peller According Webster term plastic means Any numerous organic synthetic processed materials mostly ther moplastic thermosetting polymers high molecular weight can molded cast extruded drawn laminated ob jects films filaments simply stated plastic man-made material ver sus wood quite obviously occurs nat urally However some major dif ferences construction materials used plastic propellers Although Im mechanical engineer profession have lot experience plastic mate rials So reader expert field plastics objects toor would like amplify onwhat Im about say Id welcome letter Commercially-available plastic propellers model aircraft may constructed either unreinforced plastics reinforced plastics reinforcement plastic material mostly commonly achieved addition glass fibers may form continuous filaments run Continued page 14 12 Model Aviation _________________ E-1 G-ET THE VITINCT IMPRESSIOH ThAT THIS AIgFORT SITE- IXES NOT ALLOW MO[EL AIRCRAFT PATIQ1PATIO IMPORTANT Instruction Warning Sheet 1 Before using remove flash along edges propeller scraping pocket knife 2 Select correct propeller size following engine manufacturers recommendations 3 Install propeller using correct nut washer airfoil side forward securely tighten wrench Recheck after flight 4 Use Chicken Stick electric starter start engine make adjustments behind engine 5 Keep spectators least 20 feet away out path rotating propeller 6 Wear safety glasses hand protection operating model engines permit objects touch turning propeller 7 To stop engine cut off fuel supply accordance manufacturers instructions case DO NOT stop propeller hand other object 8 Inspect propeller after flight Discard propeller has nicks scratches other visible defect DO NOT repair alter way modify propeller CAUTION ROTATING PROPELLER CAN CAUSE SERIOUS PERSONAL INJURY FOLLOW THESE INSTRUCTIONS CAREFULLY ENDANNER 1981-82 World RIC Aerobatic Champi Winner 7 consecutive Las Vegas Tournament Champions Shown above Giezendanner GMP 2001 -D Digital Tachometer USA MODELING PRODUCTS INC DEPTA U PO BOX 818 5TOWN PA 19464 37-1231 ELECTRIC RETRACTS GIEZENDANNER Two Time World Champion REGULAR RETRACTS 5/32 Pattern- Up 10 lbs HEAVY DUTY RETRACTS 3/16 Scale -10 18 lbs EXTRA HEAVY DUTY RETRACTS 1/4 Big Ones 18 50 lbs retract Slip Clutch prevent jamming stripping gears ELECTRONIC DIGITAL TACHOMETERS GMP-2001-R 2001-D Visible Visible display ondisplay ble low batteryVisible low battery displaydisplay 2 Bladed only2 & 3 Bladed props Y liquid display1A liquid display Crystal controlledCrystal controlled Catalog Available Ideal beginner well master flier CHARGE IT Left GMP-2001-R IRegular Right GMP-2001-D Deluxe Dealers Invited Yes have Giezendanner Wipers 3 Bladad Low-Noise Glass Filled Props tip-to-tip form chopped fibers randomly dispersed within plastic Some custom-produced props reinforced tip-to-tip filaments carbon fibera material considerably stronger stiffer glass fibers Perhaps commonly-seen plastic props todays flying fields black ones fabricated glass-filled nylon use chopped glass fibers strengthen nylon material ad dition glass fibers undoubtedly does add strength should regarded indestructible letters Ive received appears modern high-revving engine 40-60 cu range would safer equipped glass-filled nylon prop Blade separations can occur reason manufacturers columns writer tell avoid standing path rotating prop could resistance damage caused contact ground during bad landing afforded glass reinforcement may factor leads blade separation later date Similar abuse wooden prop generally causes breakagewhich results replacement models propeller Whatever type prop elect use after ground contact no matter slight always perform close inspection damage know props ex pensive today 10 years ago still cheap compared trip hospital emergency room Less common reinforced plastic props reinforcing fibers run tip tip Such fibers being continuous give propeller high resistance blade sep aration much same does grain wood propeller theory control can exercise over production continuous-filament reinforced plastic prop better can exercise over grow ing tree should least sus ceptible blade separation highrevving engine Tests would have conducted prove theory pre sent time know source domestically-produced continuous-filament reinforced plastic props Prop Shop Broomfield CO props manufactured epoxy resin reinforced fiberglass filaments sold variety sizes tractor pusher stallation few three-blade sizes ultra-high-revving engines thing youve experienced blade separations using wooden props might con sider such propeller Unfortunately serious accidents can occur blades separate run ning propeller frequent incidents among reported result mod elers feeding fingers through arc turning propeller such situation stronger prop likelihood serious injury No matter what type prop use keep fingersout its arc Continued page 82 Now Kit Form Save easy assemble 4 channel kit expandable 7 OnIy$ 7995 service parts available past manu factured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work Send 8Sl complete catalog FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitoring battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack I600mAH & 1200mAH extra Expan ape 95 wIth large linear servos 2995 wIth small rotary servos Full Command Systems509 487-2122 908 E Rosewood Spokane WA 99208 14 Model Aviation AL-TEC PROdUCTS INc INTRODUCES NEW BUILDING CONCEPT unique Al-I-SpAR m&2 Al-T-SpAR 2 [patent pending] integral component uni-structure membered light weight Alum inum beam T spar Specially planned total model aircraft world mind STRONG easyto use balsa foam wings tail planes Spar material Aluminum alloy 018 nominal thick AIISpARl .8ozIft1/8x3I8 hollow flangea 7/8 overall height $200 per lineal ft 3ft 4ft ALISpAR2 1 4 az/ft 1/8 x 3/8 hollow flanges 1 t $215 per ml ft available 4 ft ALjoilvER090 x 339 x 6 2024 T6 Aluminum $100 ea TijoiNER above Al-joiner dimensions grade 4 A/C titanium 151 00 eal AI-T-Spars proportioned Y dimensions Al-I-Spars Price length same Products Inc ____________________ Boardman OH 44512 Send $100 Building Guide AI-Tec Product list deducted form 1st order WINNERS Flat platinum coil element Ceramic core Idle Bar Idle cap Send SlOO catalogue S PO Box 31228 indpls IN 4623 82 Model Aviation Letters Editor Continued oaae 10 case add transfer switch can attach either transmitter output stage receiver input stage antenna safety transfer switch might also disconnect power input transmitter output stage module RF board whatever supplying power receiver Thus unit would able operate given time could right now tools available modeler second request asking monitor also sound alarm interfering signal appears bit difficult satisfy want know what interference received airplanes position Thus proper solution have airplane notify its problem Servo-Gard device available check ads inserts between throttle servo receiver cuts back engine interference received battery pack voltage drops below pre set level Depending situation either glide down idle power crash engine turning slowly Putting sensor transmitter requested introduces prob lem finding very weak signal inter ference hiding under very strong transmission Since pre suming two signals hare similar properties identical frequencies know problem discrimina tion technically difficult read expensive Thus unlikely such device will appear suggestions appreciated Please keep sending George M Myers Hicksville NY keep mind can learn lot about possibility interference particularly presence someone else channel simply turning receiver before flight watching listening inter ference noted flight resulting some unwanted control input means immediately throttle back thats possible land quickly can Safety/Preston Continued page 14 During August letter received editor Model Aviation Fred Jamieson Windsor Propeller Company products merchandised under brand name Master Airscrew glassreinforced nylon propellers black color Fred enclosed sheet accom panies propellers lists eight tips should followed no matter what type brand prop using reads given box additional tip Ive mentioned several times before regard black pro pellers take time paint tips bright color running black props tend less visible wooden variety Brightly-colored tips might alert props presence minimize possibility will feed fingers through its arc wind up discussion propeller safety article Don Parks editor Davison Aviator News illustrates pro peller safety very much responsibility user title Dons account Watch Props No sure just what happened cluding Gary usually case something does happen happens fast over damage done before can react way know Gary started engine blurp Gary staggering backwards prop went hundreds pieces hit him chest cut him just under nose cigar smoking shredded basically left what side mouth Something got right eye possibly part shredded cigar tunately glasses As stum bled backwards attempt get away plane something hit him hard enough daze him knock him flat Garys credit plane cradle started could come forward enough actually run him did appear edge carpet kneeling sucked prop may well have started whole sequence well never know sure thankful Gary seriously hurt queasy feeling witnesses stomachs pleasant dont want anyone else experience Please careful telephone conversation recently area modeler subject lockwashers mounting bolts and/or nuts engines engine mounts Personally recommend use may carry over training engineer served five-year apprenticeship British aircraft full-scale manufacturer Did ever see full-scale aircraft didnt have positive locking system engine mounting bolts model en gine installations favor lockwashers toothlike points either internal external Im sure correct designation Spring washers can also used experience less likely lock engine installation mount has tapped holes lockwashers go under head bolt through-bolts nuts used lockwashers would installed under nuts Whatever elect use periodic check mounting bolts mandatory Also dont forget muffler attachment fasteners Ive seen number mufflers disappear flight beContinued page 92 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Gal Price Drum Price TypeNitro %LubricantFreight PaidFreight-Collect FAI0%Synthetic$ 675$13995 5s5%Synthetic$ 775$21995 Sc5%Castor$ 775$21995 4cyl7%Castor$ 850$28995 lOs100/0Synthetic$ 895$32995 lOc100/0Castor$ 895$32995 R/G120/o Syn & Castor$ 995$34995 iSs1S0/oSynthetic$ 995$34995 20c200/0Castor$1395$51995 25s25%Synthetic$1495$52995 4040%lSSyn-5 Castor$1995$72995 5050%Synthetic$2395$89595 6060%Synthetic$2695$99595 PT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/0 Asstd OK 64 Gal Orders Deduct 10% Asstd OK SHELDONS Hours HOBBY SHOP Mon-Wed Fri & Sat 3157 Alum Rock Avenue 0-530 Thur 930-900 $165San Jose California 95127 M/C VISA Sun 1200-500 1 December 1983 83 An Catalog Twelve page-Fully Illustrated complete details on. MUFFLERS ENGINE MOUNTS ENGINE TESTING EQUIP SCALE ACCESSORIES SMOKE KITS FTC Send $100 NEW GLASS FILLED MOTOR MOUNTS 0405 1011 1519 2025 3035 4045 40451 5060 6010 195 225 235 245 265 275 300 325 325 OEM BULK INQUIRES INVITED Flat bottom nose gear Featuring LONG GLASS FILLED NYLON FOR STRENGTH AND STABILITY Alignment Lines Mounting Interchangeable K raft SEE YOUR DEALER OR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 ARSA COOt 5 3 38 5 6 92 Model Aviation Safety/Preston Continued page 83 cause attaching bolts checked see tight and/or locked Preflight transmitter checks August issue column printed letter modeler regarding hazard taking off transmitter mixer switch accidentally left wrong position letter Nick Fiorentino Edison NJ states 1 realized problem area could cause unsafe condition solution replace mixer switch threeplace locking switch made ALCO part number MTL- 106E Most large electronics supply houses should able get Perhaps radio manufacturers should take note Nicks suggestion install locking switches mixers stan dard practice locking switch preflight check should include inspection whistles bells trans mitter wind up months safety column word about noise hearing impairment comes mind after recent talk about Presidents partial hearing loss attributed discharge gun close ear during career film star cowboy spend lot time around screaming model aircraft engine might want consider use ear plugs EAR Corporation has some approved various State Fed eral agencies appear would comfortable wear Made closed-cell polymer foam inserted ear canal dont have price interested drop line EAR Corp 7911 Zionsville Rd. Indianapolis IN 46268 Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Grand Opening/Mankowski Continued oaoe 18 bets friends donated Building Fund also enshrined throughout building manufacturer has name bronze plaque railing initial members 1983 everyone participated birth Aero modeling Center threshold aeromodel ings future has proven convincing fashion com munity can band together rally accomplish large goaL have created unique facility its kind entire world plans uses facility limited collective imagination creative communitiesaeromodelers Continued page 129 astic New Kit Coverite Half ke takes long time complete kit worth wait new Gee Bee Model E utterly magnificent & anyone can fly it should see radial cowl molded warner engine
Edition: Model Aviation - 1983/12
Page Numbers: 12, 14, 82, 83, 92
S Cemasflisl w Plastic propellers safe Mounting engines use locknuts lockwashers Hear hear Use ear plugs power models John Preston PROPELLERSwood plastic right Injuries associ ated whirling props continue occur So please forgive think Im spending too much time talking about hazard blades front engines Two letters received during past month came manufacturers so-called plastic props both contained some safety formation Most modelers refer non-wood prop plastic prop' Some clubs have rules actually prohibit use plas tic props engines over certain displacementusually 40 cu up AMA Competition Rules RC Pylon Racing both Formula Quarter Midget specify Only wooden fixed-pitch two-blade propellers shall permitted some form discrimination against manufacturers plastic props really could certain cases Before get ting discussion pros cons wood versus plastic props lets first attempt define what mean plastic pro peller According Webster term plastic means Any numerous organic synthetic processed materials mostly ther moplastic thermosetting polymers high molecular weight can molded cast extruded drawn laminated ob jects films filaments simply stated plastic man-made material ver sus wood quite obviously occurs nat urally However some major dif ferences construction materials used plastic propellers Although Im mechanical engineer profession have lot experience plastic mate rials So reader expert field plastics objects toor would like amplify onwhat Im about say Id welcome letter Commercially-available plastic propellers model aircraft may constructed either unreinforced plastics reinforced plastics reinforcement plastic material mostly commonly achieved addition glass fibers may form continuous filaments run Continued page 14 12 Model Aviation _________________ E-1 G-ET THE VITINCT IMPRESSIOH ThAT THIS AIgFORT SITE- IXES NOT ALLOW MO[EL AIRCRAFT PATIQ1PATIO IMPORTANT Instruction Warning Sheet 1 Before using remove flash along edges propeller scraping pocket knife 2 Select correct propeller size following engine manufacturers recommendations 3 Install propeller using correct nut washer airfoil side forward securely tighten wrench Recheck after flight 4 Use Chicken Stick electric starter start engine make adjustments behind engine 5 Keep spectators least 20 feet away out path rotating propeller 6 Wear safety glasses hand protection operating model engines permit objects touch turning propeller 7 To stop engine cut off fuel supply accordance manufacturers instructions case DO NOT stop propeller hand other object 8 Inspect propeller after flight Discard propeller has nicks scratches other visible defect DO NOT repair alter way modify propeller CAUTION ROTATING PROPELLER CAN CAUSE SERIOUS PERSONAL INJURY FOLLOW THESE INSTRUCTIONS CAREFULLY ENDANNER 1981-82 World RIC Aerobatic Champi Winner 7 consecutive Las Vegas Tournament Champions Shown above Giezendanner GMP 2001 -D Digital Tachometer USA MODELING PRODUCTS INC DEPTA U PO BOX 818 5TOWN PA 19464 37-1231 ELECTRIC RETRACTS GIEZENDANNER Two Time World Champion REGULAR RETRACTS 5/32 Pattern- Up 10 lbs HEAVY DUTY RETRACTS 3/16 Scale -10 18 lbs EXTRA HEAVY DUTY RETRACTS 1/4 Big Ones 18 50 lbs retract Slip Clutch prevent jamming stripping gears ELECTRONIC DIGITAL TACHOMETERS GMP-2001-R 2001-D Visible Visible display ondisplay ble low batteryVisible low battery displaydisplay 2 Bladed only2 & 3 Bladed props Y liquid display1A liquid display Crystal controlledCrystal controlled Catalog Available Ideal beginner well master flier CHARGE IT Left GMP-2001-R IRegular Right GMP-2001-D Deluxe Dealers Invited Yes have Giezendanner Wipers 3 Bladad Low-Noise Glass Filled Props tip-to-tip form chopped fibers randomly dispersed within plastic Some custom-produced props reinforced tip-to-tip filaments carbon fibera material considerably stronger stiffer glass fibers Perhaps commonly-seen plastic props todays flying fields black ones fabricated glass-filled nylon use chopped glass fibers strengthen nylon material ad dition glass fibers undoubtedly does add strength should regarded indestructible letters Ive received appears modern high-revving engine 40-60 cu range would safer equipped glass-filled nylon prop Blade separations can occur reason manufacturers columns writer tell avoid standing path rotating prop could resistance damage caused contact ground during bad landing afforded glass reinforcement may factor leads blade separation later date Similar abuse wooden prop generally causes breakagewhich results replacement models propeller Whatever type prop elect use after ground contact no matter slight always perform close inspection damage know props ex pensive today 10 years ago still cheap compared trip hospital emergency room Less common reinforced plastic props reinforcing fibers run tip tip Such fibers being continuous give propeller high resistance blade sep aration much same does grain wood propeller theory control can exercise over production continuous-filament reinforced plastic prop better can exercise over grow ing tree should least sus ceptible blade separation highrevving engine Tests would have conducted prove theory pre sent time know source domestically-produced continuous-filament reinforced plastic props Prop Shop Broomfield CO props manufactured epoxy resin reinforced fiberglass filaments sold variety sizes tractor pusher stallation few three-blade sizes ultra-high-revving engines thing youve experienced blade separations using wooden props might con sider such propeller Unfortunately serious accidents can occur blades separate run ning propeller frequent incidents among reported result mod elers feeding fingers through arc turning propeller such situation stronger prop likelihood serious injury No matter what type prop use keep fingersout its arc Continued page 82 Now Kit Form Save easy assemble 4 channel kit expandable 7 OnIy$ 7995 service parts available past manu factured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work Send 8Sl complete catalog FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitoring battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack I600mAH & 1200mAH extra Expan ape 95 wIth large linear servos 2995 wIth small rotary servos Full Command Systems509 487-2122 908 E Rosewood Spokane WA 99208 14 Model Aviation AL-TEC PROdUCTS INc INTRODUCES NEW BUILDING CONCEPT unique Al-I-SpAR m&2 Al-T-SpAR 2 [patent pending] integral component uni-structure membered light weight Alum inum beam T spar Specially planned total model aircraft world mind STRONG easyto use balsa foam wings tail planes Spar material Aluminum alloy 018 nominal thick AIISpARl .8ozIft1/8x3I8 hollow flangea 7/8 overall height $200 per lineal ft 3ft 4ft ALISpAR2 1 4 az/ft 1/8 x 3/8 hollow flanges 1 t $215 per ml ft available 4 ft ALjoilvER090 x 339 x 6 2024 T6 Aluminum $100 ea TijoiNER above Al-joiner dimensions grade 4 A/C titanium 151 00 eal AI-T-Spars proportioned Y dimensions Al-I-Spars Price length same Products Inc ____________________ Boardman OH 44512 Send $100 Building Guide AI-Tec Product list deducted form 1st order WINNERS Flat platinum coil element Ceramic core Idle Bar Idle cap Send SlOO catalogue S PO Box 31228 indpls IN 4623 82 Model Aviation Letters Editor Continued oaae 10 case add transfer switch can attach either transmitter output stage receiver input stage antenna safety transfer switch might also disconnect power input transmitter output stage module RF board whatever supplying power receiver Thus unit would able operate given time could right now tools available modeler second request asking monitor also sound alarm interfering signal appears bit difficult satisfy want know what interference received airplanes position Thus proper solution have airplane notify its problem Servo-Gard device available check ads inserts between throttle servo receiver cuts back engine interference received battery pack voltage drops below pre set level Depending situation either glide down idle power crash engine turning slowly Putting sensor transmitter requested introduces prob lem finding very weak signal inter ference hiding under very strong transmission Since pre suming two signals hare similar properties identical frequencies know problem discrimina tion technically difficult read expensive Thus unlikely such device will appear suggestions appreciated Please keep sending George M Myers Hicksville NY keep mind can learn lot about possibility interference particularly presence someone else channel simply turning receiver before flight watching listening inter ference noted flight resulting some unwanted control input means immediately throttle back thats possible land quickly can Safety/Preston Continued page 14 During August letter received editor Model Aviation Fred Jamieson Windsor Propeller Company products merchandised under brand name Master Airscrew glassreinforced nylon propellers black color Fred enclosed sheet accom panies propellers lists eight tips should followed no matter what type brand prop using reads given box additional tip Ive mentioned several times before regard black pro pellers take time paint tips bright color running black props tend less visible wooden variety Brightly-colored tips might alert props presence minimize possibility will feed fingers through its arc wind up discussion propeller safety article Don Parks editor Davison Aviator News illustrates pro peller safety very much responsibility user title Dons account Watch Props No sure just what happened cluding Gary usually case something does happen happens fast over damage done before can react way know Gary started engine blurp Gary staggering backwards prop went hundreds pieces hit him chest cut him just under nose cigar smoking shredded basically left what side mouth Something got right eye possibly part shredded cigar tunately glasses As stum bled backwards attempt get away plane something hit him hard enough daze him knock him flat Garys credit plane cradle started could come forward enough actually run him did appear edge carpet kneeling sucked prop may well have started whole sequence well never know sure thankful Gary seriously hurt queasy feeling witnesses stomachs pleasant dont want anyone else experience Please careful telephone conversation recently area modeler subject lockwashers mounting bolts and/or nuts engines engine mounts Personally recommend use may carry over training engineer served five-year apprenticeship British aircraft full-scale manufacturer Did ever see full-scale aircraft didnt have positive locking system engine mounting bolts model en gine installations favor lockwashers toothlike points either internal external Im sure correct designation Spring washers can also used experience less likely lock engine installation mount has tapped holes lockwashers go under head bolt through-bolts nuts used lockwashers would installed under nuts Whatever elect use periodic check mounting bolts mandatory Also dont forget muffler attachment fasteners Ive seen number mufflers disappear flight beContinued page 92 High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability Gal Price Drum Price TypeNitro %LubricantFreight PaidFreight-Collect FAI0%Synthetic$ 675$13995 5s5%Synthetic$ 775$21995 Sc5%Castor$ 775$21995 4cyl7%Castor$ 850$28995 lOs100/0Synthetic$ 895$32995 lOc100/0Castor$ 895$32995 R/G120/o Syn & Castor$ 995$34995 iSs1S0/oSynthetic$ 995$34995 20c200/0Castor$1395$51995 25s25%Synthetic$1495$52995 4040%lSSyn-5 Castor$1995$72995 5050%Synthetic$2395$89595 6060%Synthetic$2695$99595 PT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/0 Asstd OK 64 Gal Orders Deduct 10% Asstd OK SHELDONS Hours HOBBY SHOP Mon-Wed Fri & Sat 3157 Alum Rock Avenue 0-530 Thur 930-900 $165San Jose California 95127 M/C VISA Sun 1200-500 1 December 1983 83 An Catalog Twelve page-Fully Illustrated complete details on. MUFFLERS ENGINE MOUNTS ENGINE TESTING EQUIP SCALE ACCESSORIES SMOKE KITS FTC Send $100 NEW GLASS FILLED MOTOR MOUNTS 0405 1011 1519 2025 3035 4045 40451 5060 6010 195 225 235 245 265 275 300 325 325 OEM BULK INQUIRES INVITED Flat bottom nose gear Featuring LONG GLASS FILLED NYLON FOR STRENGTH AND STABILITY Alignment Lines Mounting Interchangeable K raft SEE YOUR DEALER OR DISTRIBUTOR DAVE BROWN PRODUCTS 4560 LAYHIGH RD HAMILTON OH 45013 ARSA COOt 5 3 38 5 6 92 Model Aviation Safety/Preston Continued page 83 cause attaching bolts checked see tight and/or locked Preflight transmitter checks August issue column printed letter modeler regarding hazard taking off transmitter mixer switch accidentally left wrong position letter Nick Fiorentino Edison NJ states 1 realized problem area could cause unsafe condition solution replace mixer switch threeplace locking switch made ALCO part number MTL- 106E Most large electronics supply houses should able get Perhaps radio manufacturers should take note Nicks suggestion install locking switches mixers stan dard practice locking switch preflight check should include inspection whistles bells trans mitter wind up months safety column word about noise hearing impairment comes mind after recent talk about Presidents partial hearing loss attributed discharge gun close ear during career film star cowboy spend lot time around screaming model aircraft engine might want consider use ear plugs EAR Corporation has some approved various State Fed eral agencies appear would comfortable wear Made closed-cell polymer foam inserted ear canal dont have price interested drop line EAR Corp 7911 Zionsville Rd. Indianapolis IN 46268 Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Grand Opening/Mankowski Continued oaoe 18 bets friends donated Building Fund also enshrined throughout building manufacturer has name bronze plaque railing initial members 1983 everyone participated birth Aero modeling Center threshold aeromodel ings future has proven convincing fashion com munity can band together rally accomplish large goaL have created unique facility its kind entire world plans uses facility limited collective imagination creative communitiesaeromodelers Continued page 129 astic New Kit Coverite Half ke takes long time complete kit worth wait new Gee Bee Model E utterly magnificent & anyone can fly it should see radial cowl molded warner engine