Flite Line Models over 20 years have made some easiest buildbest flying kits money can buy real treat try see Manufactured modelers modelers 19-4oeng3or4ch Scat Cat 500 $4695 winningest 500 racer everl Tough Basic Trainer EZTrainer $4595 19-35 eng z23 ch EZ Sport 4595 19-40 eng 4 ch Great Second Plane Skooter II$4295 An Old Favorite jjjnajsl795 19-40eng4ch EZ Fli$4995 Aileron Trainer i194O5flg4ch NEW Fun Fli 40 $4195 19-40 eng4 ch Docile 19-25 Hot Rod 40 COMING SOON Fun Fli 60$559540-60 eng4 ch Most kits may built either standard trike gear Kits feature precision hand cut parts AAA materials formed gear hinges horns etc SEE YOUR DEALER Dealers-DistributorsStandard Discounts 3207 34th St Lubbock TX 79410 806 792-2671 etters t6e dtcr letters will carefully considered general interest used Send ModelAviation 1810 Samuel Morse Dr Reston VA 22090 Mr Mulligan Plus After looking Mr Mulligan recent issue MA decided send version call Mulligan Plus Three years ago decided Mr Mul ligan Quarter Scale project Want ing both monoplane biplane pre sented spacial financial problem Mr Mulligan could solu tion told picked ugliest plane world build can imagine remarks heard ap peared monthly club meeting nearly-completed skeleton Mr Mulligan dressed biplane Wow will never fly too big too heavy twice ugly etc things heard flew two years Mr Mul ligan monoplane Sunday afternoon last fall decided flown Mr Mulligan long enough Besides everyone wanted see spectacular crash went lower wing Being quite nervous bi plane version would handle after comments beginning have some doubts myself decided Ray Perry clubs flight instructor would make first flight As everyone gath ered witness event crash lifted off beautifully climbed-out much trim change beautiful hands-off level flight using tne original plans ana elimi nating first two ribs lower wing 10 shorter Quarter-inch dowels wing root slide plywood boxes built landing gear plate dowels secured screws plane powered Quadra Its covered Super Coverite spraypainted Krylon enamel wheel pants have removed flying grass big heavy about 24 lb Quadra sufficient loops aile ron rolls mean snap-roll 20-6 prop seems best-suited combination Arthur P Nagelin Bangor ME Mr Mulligan ugly Wash out mouth soap picture shows has character bipe too Single Twin Thought would like see latest FFF Fickle Finger Fate Aviationa single-engine twin inspired really great article July 1983 issue Editor would Frank Bakers DH 98 Mos quito two lOs bought House Balsa Shoestring sorta cut refitted until wound up plane shown picture Actually love kind building nothing plane ex actly like kit except inner wing ribs spar design uses fiberglass arrow shaft spar actually two arrow shafts engine nacelles urethane foam solid noses holding what weight necessary get CG wanted Total weight Max 1 5 three-chan nel equipment 3 lb button Continued page 10 8 Model Aviation Save Over 50% Complete Modelers Assortment Fasteners Kits Come 18 Compartment Heavy Duty Industrial Organizer * Inclode $250 shipping ft handling * Add $205 COD * Minn residents add 5% sales tao * Phone orders shipped same day * Mail orders shipped wlin 24 horns HSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST 2-56 a 316 SOCKET HEAD CAP SCREW 254 a 1 4 SOCKET HEAD CAP SCREW 2-56 I 2 SOCKET HEAD CAP SCREW 4-40 a SOCKET HEAD CAP SCREW 440 a 1 2 SOCKET HEAD CAP SCREW 4-40 a 34 SOCKET HEAD CAP SCREW 4-40 a 1 SOCKET HEAD CAP SCREW 6-32 a 1 4 SOCKET HEAD CAP SCREW 6-32 a 1 2 SOCKET HEAD CAP SCREW 4-32 a 34 SOCKET HEAD CAP SCREW 6-32 a 1 SOCKET HEAD CAP SCREW 6-32 a 1 SOCKET HEAD CAP SCREW 4-32 a 2 SOCKET HEAD CAP SCREW FLAT WASHERS SAE ZINC PLATED NYLON INSERT LOCK NUTS ZINC PLATED 2-56 4-40 6-32 PCS 25 25 25 20 20 20 20 15 15 5 IS 15 15 75 go 96 75 80 go TOTAL PCS 735 Only $2495 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD SPORTSMANAU RACING TARY WHEELS AGE SMOOTH CONTOUR BALLOON n GOLDEN AGE 4 ENGINES PRATT & WHITNEY HT LE RHONE time writing hadnt flown time reading will either veteran sky victim ground fellow holding plane picture looks remarkably like ex cept seldom can caught tie daughter soloed Minolta must have quick trigger finger capture such event other better looking picture same plane above-men tioned daughter holding engine de tail shows better nobody ever feels old enough have teenage daughter Tom Chipley Designer/Test Pilot FFF Aviation Rocky Mount NC Frequency Control Idea After reading articles fre quency control seeing few models shot down local flying club have come conclusion has better methodone will eliminate human error have idea might worth stating though would little costly Build small receiver trans mitter activated power switch unit turned receiver scans frequency zone does allow transmission sig nal until frequency clear Also same unit could made sound alarm interfering signal received before end flight possibly allowing enough time pre vent loss aircraft radio manufacturers would design market system nature think would benefit its use would mind ad ditional cost would pay itself first use Ron Fiedler Temecula CA passed above letter Radio Technique contributing editor chairman AMA Frequency Committee George M Myers response Ron Fiedlers letter follows too think idea having monitor built transmitter good will check Radio Technique Model Aviation June 1982 page 92 August 1982 page 28 will see some suggestions simi lar yours As see monitor has check channel its system plans use assuming crystal-controlled transmitter Scanning other chan nels really isnt necessary As implementation simplest approach would build crystalcontrolled receiver transmitter Continued page 82 10 Model Aviation pja aaa -& aOaao Order ARDWAEE SYSTEMS 425 Wushlmgtees Ave. 6. Edges PoinIrle MI. 55344 Phone 412941T57 Free Ctaleg Upee Reqeeet No Perches Necessary C DEPT MA lot rA PARTS T & WHITNEY HONE WRIGHT E LEWISVICKERS DAU PARABELLUM $1 FOR FULLY ILLUSTRATED CATALOG ST SAN MARCOS CALIFORNIA 92069 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
Edition: Model Aviation - 1983/12
Page Numbers: 8, 10, 82
Flite Line Models over 20 years have made some easiest buildbest flying kits money can buy real treat try see Manufactured modelers modelers 19-4oeng3or4ch Scat Cat 500 $4695 winningest 500 racer everl Tough Basic Trainer EZTrainer $4595 19-35 eng z23 ch EZ Sport 4595 19-40 eng 4 ch Great Second Plane Skooter II$4295 An Old Favorite jjjnajsl795 19-40eng4ch EZ Fli$4995 Aileron Trainer i194O5flg4ch NEW Fun Fli 40 $4195 19-40 eng4 ch Docile 19-25 Hot Rod 40 COMING SOON Fun Fli 60$559540-60 eng4 ch Most kits may built either standard trike gear Kits feature precision hand cut parts AAA materials formed gear hinges horns etc SEE YOUR DEALER Dealers-DistributorsStandard Discounts 3207 34th St Lubbock TX 79410 806 792-2671 etters t6e dtcr letters will carefully considered general interest used Send ModelAviation 1810 Samuel Morse Dr Reston VA 22090 Mr Mulligan Plus After looking Mr Mulligan recent issue MA decided send version call Mulligan Plus Three years ago decided Mr Mul ligan Quarter Scale project Want ing both monoplane biplane pre sented spacial financial problem Mr Mulligan could solu tion told picked ugliest plane world build can imagine remarks heard ap peared monthly club meeting nearly-completed skeleton Mr Mulligan dressed biplane Wow will never fly too big too heavy twice ugly etc things heard flew two years Mr Mul ligan monoplane Sunday afternoon last fall decided flown Mr Mulligan long enough Besides everyone wanted see spectacular crash went lower wing Being quite nervous bi plane version would handle after comments beginning have some doubts myself decided Ray Perry clubs flight instructor would make first flight As everyone gath ered witness event crash lifted off beautifully climbed-out much trim change beautiful hands-off level flight using tne original plans ana elimi nating first two ribs lower wing 10 shorter Quarter-inch dowels wing root slide plywood boxes built landing gear plate dowels secured screws plane powered Quadra Its covered Super Coverite spraypainted Krylon enamel wheel pants have removed flying grass big heavy about 24 lb Quadra sufficient loops aile ron rolls mean snap-roll 20-6 prop seems best-suited combination Arthur P Nagelin Bangor ME Mr Mulligan ugly Wash out mouth soap picture shows has character bipe too Single Twin Thought would like see latest FFF Fickle Finger Fate Aviationa single-engine twin inspired really great article July 1983 issue Editor would Frank Bakers DH 98 Mos quito two lOs bought House Balsa Shoestring sorta cut refitted until wound up plane shown picture Actually love kind building nothing plane ex actly like kit except inner wing ribs spar design uses fiberglass arrow shaft spar actually two arrow shafts engine nacelles urethane foam solid noses holding what weight necessary get CG wanted Total weight Max 1 5 three-chan nel equipment 3 lb button Continued page 10 8 Model Aviation Save Over 50% Complete Modelers Assortment Fasteners Kits Come 18 Compartment Heavy Duty Industrial Organizer * Inclode $250 shipping ft handling * Add $205 COD * Minn residents add 5% sales tao * Phone orders shipped same day * Mail orders shipped wlin 24 horns HSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST 2-56 a 316 SOCKET HEAD CAP SCREW 254 a 1 4 SOCKET HEAD CAP SCREW 2-56 I 2 SOCKET HEAD CAP SCREW 4-40 a SOCKET HEAD CAP SCREW 440 a 1 2 SOCKET HEAD CAP SCREW 4-40 a 34 SOCKET HEAD CAP SCREW 4-40 a 1 SOCKET HEAD CAP SCREW 6-32 a 1 4 SOCKET HEAD CAP SCREW 6-32 a 1 2 SOCKET HEAD CAP SCREW 4-32 a 34 SOCKET HEAD CAP SCREW 6-32 a 1 SOCKET HEAD CAP SCREW 6-32 a 1 SOCKET HEAD CAP SCREW 4-32 a 2 SOCKET HEAD CAP SCREW FLAT WASHERS SAE ZINC PLATED NYLON INSERT LOCK NUTS ZINC PLATED 2-56 4-40 6-32 PCS 25 25 25 20 20 20 20 15 15 5 IS 15 15 75 go 96 75 80 go TOTAL PCS 735 Only $2495 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD SPORTSMANAU RACING TARY WHEELS AGE SMOOTH CONTOUR BALLOON n GOLDEN AGE 4 ENGINES PRATT & WHITNEY HT LE RHONE time writing hadnt flown time reading will either veteran sky victim ground fellow holding plane picture looks remarkably like ex cept seldom can caught tie daughter soloed Minolta must have quick trigger finger capture such event other better looking picture same plane above-men tioned daughter holding engine de tail shows better nobody ever feels old enough have teenage daughter Tom Chipley Designer/Test Pilot FFF Aviation Rocky Mount NC Frequency Control Idea After reading articles fre quency control seeing few models shot down local flying club have come conclusion has better methodone will eliminate human error have idea might worth stating though would little costly Build small receiver trans mitter activated power switch unit turned receiver scans frequency zone does allow transmission sig nal until frequency clear Also same unit could made sound alarm interfering signal received before end flight possibly allowing enough time pre vent loss aircraft radio manufacturers would design market system nature think would benefit its use would mind ad ditional cost would pay itself first use Ron Fiedler Temecula CA passed above letter Radio Technique contributing editor chairman AMA Frequency Committee George M Myers response Ron Fiedlers letter follows too think idea having monitor built transmitter good will check Radio Technique Model Aviation June 1982 page 92 August 1982 page 28 will see some suggestions simi lar yours As see monitor has check channel its system plans use assuming crystal-controlled transmitter Scanning other chan nels really isnt necessary As implementation simplest approach would build crystalcontrolled receiver transmitter Continued page 82 10 Model Aviation pja aaa -& aOaao Order ARDWAEE SYSTEMS 425 Wushlmgtees Ave. 6. Edges PoinIrle MI. 55344 Phone 412941T57 Free Ctaleg Upee Reqeeet No Perches Necessary C DEPT MA lot rA PARTS T & WHITNEY HONE WRIGHT E LEWISVICKERS DAU PARABELLUM $1 FOR FULLY ILLUSTRATED CATALOG ST SAN MARCOS CALIFORNIA 92069 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
Edition: Model Aviation - 1983/12
Page Numbers: 8, 10, 82
Flite Line Models over 20 years have made some easiest buildbest flying kits money can buy real treat try see Manufactured modelers modelers 19-4oeng3or4ch Scat Cat 500 $4695 winningest 500 racer everl Tough Basic Trainer EZTrainer $4595 19-35 eng z23 ch EZ Sport 4595 19-40 eng 4 ch Great Second Plane Skooter II$4295 An Old Favorite jjjnajsl795 19-40eng4ch EZ Fli$4995 Aileron Trainer i194O5flg4ch NEW Fun Fli 40 $4195 19-40 eng4 ch Docile 19-25 Hot Rod 40 COMING SOON Fun Fli 60$559540-60 eng4 ch Most kits may built either standard trike gear Kits feature precision hand cut parts AAA materials formed gear hinges horns etc SEE YOUR DEALER Dealers-DistributorsStandard Discounts 3207 34th St Lubbock TX 79410 806 792-2671 etters t6e dtcr letters will carefully considered general interest used Send ModelAviation 1810 Samuel Morse Dr Reston VA 22090 Mr Mulligan Plus After looking Mr Mulligan recent issue MA decided send version call Mulligan Plus Three years ago decided Mr Mul ligan Quarter Scale project Want ing both monoplane biplane pre sented spacial financial problem Mr Mulligan could solu tion told picked ugliest plane world build can imagine remarks heard ap peared monthly club meeting nearly-completed skeleton Mr Mulligan dressed biplane Wow will never fly too big too heavy twice ugly etc things heard flew two years Mr Mul ligan monoplane Sunday afternoon last fall decided flown Mr Mulligan long enough Besides everyone wanted see spectacular crash went lower wing Being quite nervous bi plane version would handle after comments beginning have some doubts myself decided Ray Perry clubs flight instructor would make first flight As everyone gath ered witness event crash lifted off beautifully climbed-out much trim change beautiful hands-off level flight using tne original plans ana elimi nating first two ribs lower wing 10 shorter Quarter-inch dowels wing root slide plywood boxes built landing gear plate dowels secured screws plane powered Quadra Its covered Super Coverite spraypainted Krylon enamel wheel pants have removed flying grass big heavy about 24 lb Quadra sufficient loops aile ron rolls mean snap-roll 20-6 prop seems best-suited combination Arthur P Nagelin Bangor ME Mr Mulligan ugly Wash out mouth soap picture shows has character bipe too Single Twin Thought would like see latest FFF Fickle Finger Fate Aviationa single-engine twin inspired really great article July 1983 issue Editor would Frank Bakers DH 98 Mos quito two lOs bought House Balsa Shoestring sorta cut refitted until wound up plane shown picture Actually love kind building nothing plane ex actly like kit except inner wing ribs spar design uses fiberglass arrow shaft spar actually two arrow shafts engine nacelles urethane foam solid noses holding what weight necessary get CG wanted Total weight Max 1 5 three-chan nel equipment 3 lb button Continued page 10 8 Model Aviation Save Over 50% Complete Modelers Assortment Fasteners Kits Come 18 Compartment Heavy Duty Industrial Organizer * Inclode $250 shipping ft handling * Add $205 COD * Minn residents add 5% sales tao * Phone orders shipped same day * Mail orders shipped wlin 24 horns HSA-735 ALLOY STEEL SOCKET HEAD CAP SCREWS CONTENTS LIST 2-56 a 316 SOCKET HEAD CAP SCREW 254 a 1 4 SOCKET HEAD CAP SCREW 2-56 I 2 SOCKET HEAD CAP SCREW 4-40 a SOCKET HEAD CAP SCREW 440 a 1 2 SOCKET HEAD CAP SCREW 4-40 a 34 SOCKET HEAD CAP SCREW 4-40 a 1 SOCKET HEAD CAP SCREW 6-32 a 1 4 SOCKET HEAD CAP SCREW 6-32 a 1 2 SOCKET HEAD CAP SCREW 4-32 a 34 SOCKET HEAD CAP SCREW 6-32 a 1 SOCKET HEAD CAP SCREW 6-32 a 1 SOCKET HEAD CAP SCREW 4-32 a 2 SOCKET HEAD CAP SCREW FLAT WASHERS SAE ZINC PLATED NYLON INSERT LOCK NUTS ZINC PLATED 2-56 4-40 6-32 PCS 25 25 25 20 20 20 20 15 15 5 IS 15 15 75 go 96 75 80 go TOTAL PCS 735 Only $2495 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD SPORTSMANAU RACING TARY WHEELS AGE SMOOTH CONTOUR BALLOON n GOLDEN AGE 4 ENGINES PRATT & WHITNEY HT LE RHONE time writing hadnt flown time reading will either veteran sky victim ground fellow holding plane picture looks remarkably like ex cept seldom can caught tie daughter soloed Minolta must have quick trigger finger capture such event other better looking picture same plane above-men tioned daughter holding engine de tail shows better nobody ever feels old enough have teenage daughter Tom Chipley Designer/Test Pilot FFF Aviation Rocky Mount NC Frequency Control Idea After reading articles fre quency control seeing few models shot down local flying club have come conclusion has better methodone will eliminate human error have idea might worth stating though would little costly Build small receiver trans mitter activated power switch unit turned receiver scans frequency zone does allow transmission sig nal until frequency clear Also same unit could made sound alarm interfering signal received before end flight possibly allowing enough time pre vent loss aircraft radio manufacturers would design market system nature think would benefit its use would mind ad ditional cost would pay itself first use Ron Fiedler Temecula CA passed above letter Radio Technique contributing editor chairman AMA Frequency Committee George M Myers response Ron Fiedlers letter follows too think idea having monitor built transmitter good will check Radio Technique Model Aviation June 1982 page 92 August 1982 page 28 will see some suggestions simi lar yours As see monitor has check channel its system plans use assuming crystal-controlled transmitter Scanning other chan nels really isnt necessary As implementation simplest approach would build crystalcontrolled receiver transmitter Continued page 82 10 Model Aviation pja aaa -& aOaao Order ARDWAEE SYSTEMS 425 Wushlmgtees Ave. 6. Edges PoinIrle MI. 55344 Phone 412941T57 Free Ctaleg Upee Reqeeet No Perches Necessary C DEPT MA lot rA PARTS T & WHITNEY HONE WRIGHT E LEWISVICKERS DAU PARABELLUM $1 FOR FULLY ILLUSTRATED CATALOG ST SAN MARCOS CALIFORNIA 92069 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