MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint p miowes PRODUCTS CO hi 400 5outt Indiana St Hobart IndIana 46342 Wi ---teA Letters Editor letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 Quickie Bigger Safer An interesting article no possible use model builder belongs Air Progress similar showed CG could fake follow up RC construction article make plans available Ill happily forgive overly verbose report subject air craft Never could understand canard concept pursued first glider Aircraft about 1926 made whittled shingles slices auto mobile inner tubes hold wings place Flown canard flew very well wing forward nose weight plenty added performance suffered have offended theeit intentional Sorry Walter Wirths Harrington Park NJ Better late neverheres CG position People seem building mod els Quickie quarter-scale RC version local field spans 4 ft. yet has 60 engine See Meuser month highly interesting canard item Joyces record cargo model two 010s Canards popular about 45 years ago common fault time tendency meander over landscapetroublesome indoor model Book Wanted can give assistance lo cating copy Fought Sky Quinten Reynolds Jr would greatly appreciated have looking copy years luck B L Thomas Valco 10055 N Wayne Ave PO Box 15177 Cincinnati OH 45215 am member Southern Tier Aero Radio Society Inc STARS recently have become involved large size R/C models As aspects involve ment larger size model new novel am often asked questions pertain ing am Mechanical Engineer profession have somewhat amazed misconceptions held regards model aircraft following graph explanation may interest modelers others regard Models safe flyers fly no substitute safe practices regards R/C model large models generally exhibit better average flying ability articles have written own ex periences agree part large models have come about scale modelers wish fly scale model scale-like speed smaller size scale ship must fly faster-than-scale speed attain stable operation am sure aeronautical engi neer can explain general observa tion can prove point Anyone has witnessed flight large model can attest Large models generally fly much lower speed current popular R/C models explaining safety aspect model must consider two aspects model 1 ability control craft 2 damage can expected accident occurs purpose letter explana tion second aspect first has often mentioned feel gen erally understood accepted second aspect basically energy moving body energy called kinetic energy function its weight its speed Damage occurs energy transmitted moving body another body ground person thing mathematical equation energy E E gy foot pounds M weight pounds divided gravitational con stant 32 2 V city feet per second Putting equation meaningful form can say KE WV2 kinetic energy proportional weight pounds times velocity miles per hour squared exact energy can compared existing value 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 modelers familiar chart shows relative energy levels several common types aircraft five pound racer eight pound pattern ship other large models comparison energy levels indicate large model well within energy level current types 2040 60100300 305080200 9000 7000 5000 4000 2000 looc 800 600 / I 0 400 0 0 k 0 20 0 tj 100 80 60 40 30 20 /11 Li J VELOCITY- MILES PER HOUR should also pointed out though large models often use larger engine regards displacement horsepower developed generally less produced new high speed Schnuerle ported engines because large model generally requires large propeller rpm shaft pur posely reduced accommodate geared engine way accomplish larger engine lower rpm anFox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuft Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg.5086885 Small Clear Plastic2/n Pkg.25 86881 Medium Neoprene2 Pbg.6086886 Mediam Clear Plastic2 Pkg.30 t6882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 Plrg.40 86883 Small Tuft Line1 Plrg 5586888 Small Surgical Tubing2 Pkg.50 86884 Medium Tuft Line1 Pkg 7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Pkg10086890 Large Surgical Tubing2 Plrg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer ho-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program L 1977 EK-Prod.cts Inc 779 EK-Products August1978 7 Continued page 83 Letters Editor continued page 7 other can also pointed out speed model proportional cube root power wing area given horsepower speed large model must slower smaller model therefore safer use higher horsepower flying larger model make smaller model go faster formula VK3 P/A V equals velocity K equals con stant depending type aircraft P equals horsepower equals wing area purpose letter point out large models generate energy current popular types therefore represent hazard Robert Dunn Olean NY Fast February 1978 Openers point out new RC glider speed record exceeds power speed rec ord nearly 30 mph amazing difference deserves explanation reason attributed. ridiculous airplane outruns engine prop disk actually acts brake airplane power drive should increase its speed cut engine feathered prop An engine turning 13 pitch prop 20000 rpm would start brake airplane until speed exceeds 246 mph prop braking simply too low pitch Kit Bays Downers Grove IL checked qualified person gives opinion 246 mph figure men tioned Bays letter reasonable cidentally statement airplane outruns engine stand editorial com ment added after mention conversa tion Maynard Hill words Maynards note Kit questions prop disc would behave brake plane would go faster prop could feathered know flier saying after RC Power Speed tempt world record wished could rid engine too note Kit used words . would start brake ncede prop too low pitch have ask engine would turn higher pitch necessary rpmor powerful higher rpm engine used re quired question too complex blithe answer Only few people world may know answer fa miliar related factors cluding airplane itself Backyard Circus enjoyed article Leo Vartanian indoor electric very muchI have also used Monogram unit good re suIts Super Star Ace R/O two AA nicads could five minutes about 400 altitude very satisfying performer have flying small field plane designed Im sending some pic tures setting teacup Kodak photos gives idea its size 24 span 12 oz Astro 020 Ace Baby R/O have also flown Cannon Super Mini two chan nel quite successfully really outstand ing feature Electra Flea its rapid climb designed built fly out vacant lot next lived does beautifully gets above phone lines trees roof tops etc less minute gets up about 500 five minute flights Once motor August1978 83 4 LUTON Minor A34,fliIW3,79&I 7 L3rn ddi*hITI High ft 73N 7311 T0 33 flyiR 29fl3.I A/C See dealer NOW NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 373 1173 IiNp73. 933 Ap9RR7djV7VflhIRd K 119 99 3311 S319939 V93 1313 337337 373. 03313 Z Send 2Sf catalog oil FLYLINEs classic kits FLYLINE MODELS INC AR2000RRAVeIuR IR133 drops out batteries discharged comes like spoilers steep steady descent easy get right back tight little lot climbed out also bothered wind no problem wind up 15 mph However isnt particu larly fast flier about 25-30 mph beginners can fly Mitch Poling Seattle WA Smallest CL Plane am trying locate plans small est recorded control line plane ever flown Could please tell would have send get such information reason am doing because friend going try fly smallest smaller would appreciate could help Randy Patterson Roscommon MI dont think anyone knows sure built smallest CL model youll find something interesting page 61 April issue Model Aviation keep light use wider chord area probably could make smallerperhaps keep clipping wing tiny bit time will arrive smallest thing will fly dont fall old trap smaller wings must make plane faster Speed fliers went way years ago learning ship assume angle attack generate enough lift remain airborne just flew slower must enough area thing get step Help Wanted am process building first radio control model would like get touch local clubs may area south west city Boston know clubs Framingham Bridgewater Mas sachusetts Framingham called believe Charles River Club However know name contact person could send information give letter someone could would appreciate very much Before closing must say Model Aviation very superior publication have right proud April issue must qualify best issues magazine field ever published As member AMA appreciate skilled efforts behalf myself other members Fred E Bellows Jr 165 N Main St Sharon MA 0207 have included Mr Belows full ad dress some helpful reader may write him No such club appears MA club roster RC Technique/Myers continued page 12 pack way What thought 6hour charge turned out like 30 hours Another fellow using same Intermatic Model C-i 11 timer en countered same type failure product review product review product review Prop Driver Quadras Called Super Drive geared-down driver develops 22 lbs thrust standard Quadra develops 16 lbs 18-6 8200 rpml turning Grish 24-10 4400 4600 rpm Engine rpm 8800 9200 rpm drive ratio 2 1 Material steel brackets aluminum timing pulleys Bolt-on assem bly Price $14995 Andy Sheber 18497 Brentwood Livonia MI 48154 product review product review product review because charging C/b rate no damage Now before get lot letters subject let us agree necessary charge high-rate batteries high rates work just well charged C/ 10 rate difference wait longer Now back timers lot different models available lot different prices buy cheapest thing available should anticipate possible failures minimum should test item before putting service C-l 11 about cheapest around open up look what get dollar amazing thing get much An occasional failure no reason damn company put ting out inferior product used intended turn house light off failure would unimportant subject testing things people have ever checked actual charging current put out unit supplied manu facturer might surprised what find flying buddies purchased Super System top manufacturers found received C/3 charger instruction manual called 24-hour initial charge usual 16hour working charge Imagine sur prise fried battery pack first time tried charge read same thing happening pur chaser inexpensive set Stream lines newsletter Romeo Area RIG Club Inc edited Mike Naylor Buy yourself VOM Volt-Ohm meter check things out could go other way too might under charging ignorance Learn theory behind what doing check out yourself Good point Mike C W Elmore Forth Worth Texas asks can purchase filter some kind can put TV set eliminate interference occurs operates RC transmitter house answer qualified Yes So much depends situa tion can purchase Low Pass filter electronics store will install tween TV set antenna may cut down interference wont TV weak signal area because radiation times stronger TV signal such instance probably wont help TV set hasnt re-aligned several years very few ever final ly wont help interference getting set some other route antenna TV connected tape re corder turntable tuner etc connects circuit some internal point like volume control 84 Model Aviation HEINKEL HelOOD TIONALS NA Rn pd77.73 9333 3X9 33373311 331313 74 33 flyi.g 93..3.33kA
Edition: Model Aviation - 1978/08
Page Numbers: 6, 7, 83, 84
MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint p miowes PRODUCTS CO hi 400 5outt Indiana St Hobart IndIana 46342 Wi ---teA Letters Editor letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 Quickie Bigger Safer An interesting article no possible use model builder belongs Air Progress similar showed CG could fake follow up RC construction article make plans available Ill happily forgive overly verbose report subject air craft Never could understand canard concept pursued first glider Aircraft about 1926 made whittled shingles slices auto mobile inner tubes hold wings place Flown canard flew very well wing forward nose weight plenty added performance suffered have offended theeit intentional Sorry Walter Wirths Harrington Park NJ Better late neverheres CG position People seem building mod els Quickie quarter-scale RC version local field spans 4 ft. yet has 60 engine See Meuser month highly interesting canard item Joyces record cargo model two 010s Canards popular about 45 years ago common fault time tendency meander over landscapetroublesome indoor model Book Wanted can give assistance lo cating copy Fought Sky Quinten Reynolds Jr would greatly appreciated have looking copy years luck B L Thomas Valco 10055 N Wayne Ave PO Box 15177 Cincinnati OH 45215 am member Southern Tier Aero Radio Society Inc STARS recently have become involved large size R/C models As aspects involve ment larger size model new novel am often asked questions pertain ing am Mechanical Engineer profession have somewhat amazed misconceptions held regards model aircraft following graph explanation may interest modelers others regard Models safe flyers fly no substitute safe practices regards R/C model large models generally exhibit better average flying ability articles have written own ex periences agree part large models have come about scale modelers wish fly scale model scale-like speed smaller size scale ship must fly faster-than-scale speed attain stable operation am sure aeronautical engi neer can explain general observa tion can prove point Anyone has witnessed flight large model can attest Large models generally fly much lower speed current popular R/C models explaining safety aspect model must consider two aspects model 1 ability control craft 2 damage can expected accident occurs purpose letter explana tion second aspect first has often mentioned feel gen erally understood accepted second aspect basically energy moving body energy called kinetic energy function its weight its speed Damage occurs energy transmitted moving body another body ground person thing mathematical equation energy E E gy foot pounds M weight pounds divided gravitational con stant 32 2 V city feet per second Putting equation meaningful form can say KE WV2 kinetic energy proportional weight pounds times velocity miles per hour squared exact energy can compared existing value 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 modelers familiar chart shows relative energy levels several common types aircraft five pound racer eight pound pattern ship other large models comparison energy levels indicate large model well within energy level current types 2040 60100300 305080200 9000 7000 5000 4000 2000 looc 800 600 / I 0 400 0 0 k 0 20 0 tj 100 80 60 40 30 20 /11 Li J VELOCITY- MILES PER HOUR should also pointed out though large models often use larger engine regards displacement horsepower developed generally less produced new high speed Schnuerle ported engines because large model generally requires large propeller rpm shaft pur posely reduced accommodate geared engine way accomplish larger engine lower rpm anFox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuft Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg.5086885 Small Clear Plastic2/n Pkg.25 86881 Medium Neoprene2 Pbg.6086886 Mediam Clear Plastic2 Pkg.30 t6882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 Plrg.40 86883 Small Tuft Line1 Plrg 5586888 Small Surgical Tubing2 Pkg.50 86884 Medium Tuft Line1 Pkg 7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Pkg10086890 Large Surgical Tubing2 Plrg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer ho-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program L 1977 EK-Prod.cts Inc 779 EK-Products August1978 7 Continued page 83 Letters Editor continued page 7 other can also pointed out speed model proportional cube root power wing area given horsepower speed large model must slower smaller model therefore safer use higher horsepower flying larger model make smaller model go faster formula VK3 P/A V equals velocity K equals con stant depending type aircraft P equals horsepower equals wing area purpose letter point out large models generate energy current popular types therefore represent hazard Robert Dunn Olean NY Fast February 1978 Openers point out new RC glider speed record exceeds power speed rec ord nearly 30 mph amazing difference deserves explanation reason attributed. ridiculous airplane outruns engine prop disk actually acts brake airplane power drive should increase its speed cut engine feathered prop An engine turning 13 pitch prop 20000 rpm would start brake airplane until speed exceeds 246 mph prop braking simply too low pitch Kit Bays Downers Grove IL checked qualified person gives opinion 246 mph figure men tioned Bays letter reasonable cidentally statement airplane outruns engine stand editorial com ment added after mention conversa tion Maynard Hill words Maynards note Kit questions prop disc would behave brake plane would go faster prop could feathered know flier saying after RC Power Speed tempt world record wished could rid engine too note Kit used words . would start brake ncede prop too low pitch have ask engine would turn higher pitch necessary rpmor powerful higher rpm engine used re quired question too complex blithe answer Only few people world may know answer fa miliar related factors cluding airplane itself Backyard Circus enjoyed article Leo Vartanian indoor electric very muchI have also used Monogram unit good re suIts Super Star Ace R/O two AA nicads could five minutes about 400 altitude very satisfying performer have flying small field plane designed Im sending some pic tures setting teacup Kodak photos gives idea its size 24 span 12 oz Astro 020 Ace Baby R/O have also flown Cannon Super Mini two chan nel quite successfully really outstand ing feature Electra Flea its rapid climb designed built fly out vacant lot next lived does beautifully gets above phone lines trees roof tops etc less minute gets up about 500 five minute flights Once motor August1978 83 4 LUTON Minor A34,fliIW3,79&I 7 L3rn ddi*hITI High ft 73N 7311 T0 33 flyiR 29fl3.I A/C See dealer NOW NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 373 1173 IiNp73. 933 Ap9RR7djV7VflhIRd K 119 99 3311 S319939 V93 1313 337337 373. 03313 Z Send 2Sf catalog oil FLYLINEs classic kits FLYLINE MODELS INC AR2000RRAVeIuR IR133 drops out batteries discharged comes like spoilers steep steady descent easy get right back tight little lot climbed out also bothered wind no problem wind up 15 mph However isnt particu larly fast flier about 25-30 mph beginners can fly Mitch Poling Seattle WA Smallest CL Plane am trying locate plans small est recorded control line plane ever flown Could please tell would have send get such information reason am doing because friend going try fly smallest smaller would appreciate could help Randy Patterson Roscommon MI dont think anyone knows sure built smallest CL model youll find something interesting page 61 April issue Model Aviation keep light use wider chord area probably could make smallerperhaps keep clipping wing tiny bit time will arrive smallest thing will fly dont fall old trap smaller wings must make plane faster Speed fliers went way years ago learning ship assume angle attack generate enough lift remain airborne just flew slower must enough area thing get step Help Wanted am process building first radio control model would like get touch local clubs may area south west city Boston know clubs Framingham Bridgewater Mas sachusetts Framingham called believe Charles River Club However know name contact person could send information give letter someone could would appreciate very much Before closing must say Model Aviation very superior publication have right proud April issue must qualify best issues magazine field ever published As member AMA appreciate skilled efforts behalf myself other members Fred E Bellows Jr 165 N Main St Sharon MA 0207 have included Mr Belows full ad dress some helpful reader may write him No such club appears MA club roster RC Technique/Myers continued page 12 pack way What thought 6hour charge turned out like 30 hours Another fellow using same Intermatic Model C-i 11 timer en countered same type failure product review product review product review Prop Driver Quadras Called Super Drive geared-down driver develops 22 lbs thrust standard Quadra develops 16 lbs 18-6 8200 rpml turning Grish 24-10 4400 4600 rpm Engine rpm 8800 9200 rpm drive ratio 2 1 Material steel brackets aluminum timing pulleys Bolt-on assem bly Price $14995 Andy Sheber 18497 Brentwood Livonia MI 48154 product review product review product review because charging C/b rate no damage Now before get lot letters subject let us agree necessary charge high-rate batteries high rates work just well charged C/ 10 rate difference wait longer Now back timers lot different models available lot different prices buy cheapest thing available should anticipate possible failures minimum should test item before putting service C-l 11 about cheapest around open up look what get dollar amazing thing get much An occasional failure no reason damn company put ting out inferior product used intended turn house light off failure would unimportant subject testing things people have ever checked actual charging current put out unit supplied manu facturer might surprised what find flying buddies purchased Super System top manufacturers found received C/3 charger instruction manual called 24-hour initial charge usual 16hour working charge Imagine sur prise fried battery pack first time tried charge read same thing happening pur chaser inexpensive set Stream lines newsletter Romeo Area RIG Club Inc edited Mike Naylor Buy yourself VOM Volt-Ohm meter check things out could go other way too might under charging ignorance Learn theory behind what doing check out yourself Good point Mike C W Elmore Forth Worth Texas asks can purchase filter some kind can put TV set eliminate interference occurs operates RC transmitter house answer qualified Yes So much depends situa tion can purchase Low Pass filter electronics store will install tween TV set antenna may cut down interference wont TV weak signal area because radiation times stronger TV signal such instance probably wont help TV set hasnt re-aligned several years very few ever final ly wont help interference getting set some other route antenna TV connected tape re corder turntable tuner etc connects circuit some internal point like volume control 84 Model Aviation HEINKEL HelOOD TIONALS NA Rn pd77.73 9333 3X9 33373311 331313 74 33 flyi.g 93..3.33kA
Edition: Model Aviation - 1978/08
Page Numbers: 6, 7, 83, 84
MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint p miowes PRODUCTS CO hi 400 5outt Indiana St Hobart IndIana 46342 Wi ---teA Letters Editor letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 Quickie Bigger Safer An interesting article no possible use model builder belongs Air Progress similar showed CG could fake follow up RC construction article make plans available Ill happily forgive overly verbose report subject air craft Never could understand canard concept pursued first glider Aircraft about 1926 made whittled shingles slices auto mobile inner tubes hold wings place Flown canard flew very well wing forward nose weight plenty added performance suffered have offended theeit intentional Sorry Walter Wirths Harrington Park NJ Better late neverheres CG position People seem building mod els Quickie quarter-scale RC version local field spans 4 ft. yet has 60 engine See Meuser month highly interesting canard item Joyces record cargo model two 010s Canards popular about 45 years ago common fault time tendency meander over landscapetroublesome indoor model Book Wanted can give assistance lo cating copy Fought Sky Quinten Reynolds Jr would greatly appreciated have looking copy years luck B L Thomas Valco 10055 N Wayne Ave PO Box 15177 Cincinnati OH 45215 am member Southern Tier Aero Radio Society Inc STARS recently have become involved large size R/C models As aspects involve ment larger size model new novel am often asked questions pertain ing am Mechanical Engineer profession have somewhat amazed misconceptions held regards model aircraft following graph explanation may interest modelers others regard Models safe flyers fly no substitute safe practices regards R/C model large models generally exhibit better average flying ability articles have written own ex periences agree part large models have come about scale modelers wish fly scale model scale-like speed smaller size scale ship must fly faster-than-scale speed attain stable operation am sure aeronautical engi neer can explain general observa tion can prove point Anyone has witnessed flight large model can attest Large models generally fly much lower speed current popular R/C models explaining safety aspect model must consider two aspects model 1 ability control craft 2 damage can expected accident occurs purpose letter explana tion second aspect first has often mentioned feel gen erally understood accepted second aspect basically energy moving body energy called kinetic energy function its weight its speed Damage occurs energy transmitted moving body another body ground person thing mathematical equation energy E E gy foot pounds M weight pounds divided gravitational con stant 32 2 V city feet per second Putting equation meaningful form can say KE WV2 kinetic energy proportional weight pounds times velocity miles per hour squared exact energy can compared existing value 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 modelers familiar chart shows relative energy levels several common types aircraft five pound racer eight pound pattern ship other large models comparison energy levels indicate large model well within energy level current types 2040 60100300 305080200 9000 7000 5000 4000 2000 looc 800 600 / I 0 400 0 0 k 0 20 0 tj 100 80 60 40 30 20 /11 Li J VELOCITY- MILES PER HOUR should also pointed out though large models often use larger engine regards displacement horsepower developed generally less produced new high speed Schnuerle ported engines because large model generally requires large propeller rpm shaft pur posely reduced accommodate geared engine way accomplish larger engine lower rpm anFox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuft Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg.5086885 Small Clear Plastic2/n Pkg.25 86881 Medium Neoprene2 Pbg.6086886 Mediam Clear Plastic2 Pkg.30 t6882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 Plrg.40 86883 Small Tuft Line1 Plrg 5586888 Small Surgical Tubing2 Pkg.50 86884 Medium Tuft Line1 Pkg 7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Pkg10086890 Large Surgical Tubing2 Plrg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer ho-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program L 1977 EK-Prod.cts Inc 779 EK-Products August1978 7 Continued page 83 Letters Editor continued page 7 other can also pointed out speed model proportional cube root power wing area given horsepower speed large model must slower smaller model therefore safer use higher horsepower flying larger model make smaller model go faster formula VK3 P/A V equals velocity K equals con stant depending type aircraft P equals horsepower equals wing area purpose letter point out large models generate energy current popular types therefore represent hazard Robert Dunn Olean NY Fast February 1978 Openers point out new RC glider speed record exceeds power speed rec ord nearly 30 mph amazing difference deserves explanation reason attributed. ridiculous airplane outruns engine prop disk actually acts brake airplane power drive should increase its speed cut engine feathered prop An engine turning 13 pitch prop 20000 rpm would start brake airplane until speed exceeds 246 mph prop braking simply too low pitch Kit Bays Downers Grove IL checked qualified person gives opinion 246 mph figure men tioned Bays letter reasonable cidentally statement airplane outruns engine stand editorial com ment added after mention conversa tion Maynard Hill words Maynards note Kit questions prop disc would behave brake plane would go faster prop could feathered know flier saying after RC Power Speed tempt world record wished could rid engine too note Kit used words . would start brake ncede prop too low pitch have ask engine would turn higher pitch necessary rpmor powerful higher rpm engine used re quired question too complex blithe answer Only few people world may know answer fa miliar related factors cluding airplane itself Backyard Circus enjoyed article Leo Vartanian indoor electric very muchI have also used Monogram unit good re suIts Super Star Ace R/O two AA nicads could five minutes about 400 altitude very satisfying performer have flying small field plane designed Im sending some pic tures setting teacup Kodak photos gives idea its size 24 span 12 oz Astro 020 Ace Baby R/O have also flown Cannon Super Mini two chan nel quite successfully really outstand ing feature Electra Flea its rapid climb designed built fly out vacant lot next lived does beautifully gets above phone lines trees roof tops etc less minute gets up about 500 five minute flights Once motor August1978 83 4 LUTON Minor A34,fliIW3,79&I 7 L3rn ddi*hITI High ft 73N 7311 T0 33 flyiR 29fl3.I A/C See dealer NOW NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 373 1173 IiNp73. 933 Ap9RR7djV7VflhIRd K 119 99 3311 S319939 V93 1313 337337 373. 03313 Z Send 2Sf catalog oil FLYLINEs classic kits FLYLINE MODELS INC AR2000RRAVeIuR IR133 drops out batteries discharged comes like spoilers steep steady descent easy get right back tight little lot climbed out also bothered wind no problem wind up 15 mph However isnt particu larly fast flier about 25-30 mph beginners can fly Mitch Poling Seattle WA Smallest CL Plane am trying locate plans small est recorded control line plane ever flown Could please tell would have send get such information reason am doing because friend going try fly smallest smaller would appreciate could help Randy Patterson Roscommon MI dont think anyone knows sure built smallest CL model youll find something interesting page 61 April issue Model Aviation keep light use wider chord area probably could make smallerperhaps keep clipping wing tiny bit time will arrive smallest thing will fly dont fall old trap smaller wings must make plane faster Speed fliers went way years ago learning ship assume angle attack generate enough lift remain airborne just flew slower must enough area thing get step Help Wanted am process building first radio control model would like get touch local clubs may area south west city Boston know clubs Framingham Bridgewater Mas sachusetts Framingham called believe Charles River Club However know name contact person could send information give letter someone could would appreciate very much Before closing must say Model Aviation very superior publication have right proud April issue must qualify best issues magazine field ever published As member AMA appreciate skilled efforts behalf myself other members Fred E Bellows Jr 165 N Main St Sharon MA 0207 have included Mr Belows full ad dress some helpful reader may write him No such club appears MA club roster RC Technique/Myers continued page 12 pack way What thought 6hour charge turned out like 30 hours Another fellow using same Intermatic Model C-i 11 timer en countered same type failure product review product review product review Prop Driver Quadras Called Super Drive geared-down driver develops 22 lbs thrust standard Quadra develops 16 lbs 18-6 8200 rpml turning Grish 24-10 4400 4600 rpm Engine rpm 8800 9200 rpm drive ratio 2 1 Material steel brackets aluminum timing pulleys Bolt-on assem bly Price $14995 Andy Sheber 18497 Brentwood Livonia MI 48154 product review product review product review because charging C/b rate no damage Now before get lot letters subject let us agree necessary charge high-rate batteries high rates work just well charged C/ 10 rate difference wait longer Now back timers lot different models available lot different prices buy cheapest thing available should anticipate possible failures minimum should test item before putting service C-l 11 about cheapest around open up look what get dollar amazing thing get much An occasional failure no reason damn company put ting out inferior product used intended turn house light off failure would unimportant subject testing things people have ever checked actual charging current put out unit supplied manu facturer might surprised what find flying buddies purchased Super System top manufacturers found received C/3 charger instruction manual called 24-hour initial charge usual 16hour working charge Imagine sur prise fried battery pack first time tried charge read same thing happening pur chaser inexpensive set Stream lines newsletter Romeo Area RIG Club Inc edited Mike Naylor Buy yourself VOM Volt-Ohm meter check things out could go other way too might under charging ignorance Learn theory behind what doing check out yourself Good point Mike C W Elmore Forth Worth Texas asks can purchase filter some kind can put TV set eliminate interference occurs operates RC transmitter house answer qualified Yes So much depends situa tion can purchase Low Pass filter electronics store will install tween TV set antenna may cut down interference wont TV weak signal area because radiation times stronger TV signal such instance probably wont help TV set hasnt re-aligned several years very few ever final ly wont help interference getting set some other route antenna TV connected tape re corder turntable tuner etc connects circuit some internal point like volume control 84 Model Aviation HEINKEL HelOOD TIONALS NA Rn pd77.73 9333 3X9 33373311 331313 74 33 flyi.g 93..3.33kA
Edition: Model Aviation - 1978/08
Page Numbers: 6, 7, 83, 84
MIDWEST CL Models Great beginning controlline flier fun sport new series Goodyear Rac ers styled after full-size Formula aircraft also eligible AMA Scale Racer Class competi tion Kits complete including decals supply en gine paint p miowes PRODUCTS CO hi 400 5outt Indiana St Hobart IndIana 46342 Wi ---teA Letters Editor letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 Quickie Bigger Safer An interesting article no possible use model builder belongs Air Progress similar showed CG could fake follow up RC construction article make plans available Ill happily forgive overly verbose report subject air craft Never could understand canard concept pursued first glider Aircraft about 1926 made whittled shingles slices auto mobile inner tubes hold wings place Flown canard flew very well wing forward nose weight plenty added performance suffered have offended theeit intentional Sorry Walter Wirths Harrington Park NJ Better late neverheres CG position People seem building mod els Quickie quarter-scale RC version local field spans 4 ft. yet has 60 engine See Meuser month highly interesting canard item Joyces record cargo model two 010s Canards popular about 45 years ago common fault time tendency meander over landscapetroublesome indoor model Book Wanted can give assistance lo cating copy Fought Sky Quinten Reynolds Jr would greatly appreciated have looking copy years luck B L Thomas Valco 10055 N Wayne Ave PO Box 15177 Cincinnati OH 45215 am member Southern Tier Aero Radio Society Inc STARS recently have become involved large size R/C models As aspects involve ment larger size model new novel am often asked questions pertain ing am Mechanical Engineer profession have somewhat amazed misconceptions held regards model aircraft following graph explanation may interest modelers others regard Models safe flyers fly no substitute safe practices regards R/C model large models generally exhibit better average flying ability articles have written own ex periences agree part large models have come about scale modelers wish fly scale model scale-like speed smaller size scale ship must fly faster-than-scale speed attain stable operation am sure aeronautical engi neer can explain general observa tion can prove point Anyone has witnessed flight large model can attest Large models generally fly much lower speed current popular R/C models explaining safety aspect model must consider two aspects model 1 ability control craft 2 damage can expected accident occurs purpose letter explana tion second aspect first has often mentioned feel gen erally understood accepted second aspect basically energy moving body energy called kinetic energy function its weight its speed Damage occurs energy transmitted moving body another body ground person thing mathematical equation energy E E gy foot pounds M weight pounds divided gravitational con stant 32 2 V city feet per second Putting equation meaningful form can say KE WV2 kinetic energy proportional weight pounds times velocity miles per hour squared exact energy can compared existing value 6 Model Aviation Plumb CrazyKit No 254 Miss San BernardinoKit No 255 Lii QuickieKit No 257 modelers familiar chart shows relative energy levels several common types aircraft five pound racer eight pound pattern ship other large models comparison energy levels indicate large model well within energy level current types 2040 60100300 305080200 9000 7000 5000 4000 2000 looc 800 600 / I 0 400 0 0 k 0 20 0 tj 100 80 60 40 30 20 /11 Li J VELOCITY- MILES PER HOUR should also pointed out though large models often use larger engine regards displacement horsepower developed generally less produced new high speed Schnuerle ported engines because large model generally requires large propeller rpm shaft pur posely reduced accommodate geared engine way accomplish larger engine lower rpm anFox Fuel Line Models Life Blood Passes Through Simple Piece Fuel Line Surely Want Best As engine manufacturers acutely aware large portion called engine problems reality fuel line problems Symptoms fuel line trouble going lean air leaks speed fluctuations inability get rich enough high speed restricted flow Fox Fuel Lines best materials available physical proper ties selected model use Fox Fuel Lines worlds finest Tuft Line Silicone far strongest market semitransparent shows bubbles line heat resis tant Like silicone tubing tends slip off fittings unless care taken Neoprene Actually complex compound much elastic clings fittings main disadvan tage transparent Surgical Tubing Pure Rubber Very flexible Use sharp bends necessary Semi-transparent Shows bubbles line Holds fittings well Main disadvantage tends deteriorate rapidly silicone neoprene Plastic good anybodys dont think much plastic fuel line Advantage low price transparency Disadvantage tends collapse bends hardens age heat Tends leak air fittings after ITEM FUEL LINEPRICEITEM FUEL LINEPRICE 86880 Small Neoprene2 Pkg.5086885 Small Clear Plastic2/n Pkg.25 86881 Medium Neoprene2 Pbg.6086886 Mediam Clear Plastic2 Pkg.30 t6882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 Plrg.40 86883 Small Tuft Line1 Plrg 5586888 Small Surgical Tubing2 Pkg.50 86884 Medium Tuft Line1 Pkg 7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Pkg10086890 Large Surgical Tubing2 Plrg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer ho-Channel Dilemma NIMBUS 2-channel radio system offers American engineering import prices Features include. 1 Solid state superheterodyne 2 All silicon transistor receiver circuit highly selective front end 3 RF amplifier maximum signal noise ratio unexcelled selectivity 4 2 ultra small EK SM servos greater 4 pounds output thrust 5 Receiver servos equipped 3 pin Deans gold plated plugs 6 Adjustable tension control sticks full line brochure write EK-PRODUCTS INC 3322 Stovall St Irving Texas 75061 USA Distributors dealers contact us new merchandising program L 1977 EK-Prod.cts Inc 779 EK-Products August1978 7 Continued page 83 Letters Editor continued page 7 other can also pointed out speed model proportional cube root power wing area given horsepower speed large model must slower smaller model therefore safer use higher horsepower flying larger model make smaller model go faster formula VK3 P/A V equals velocity K equals con stant depending type aircraft P equals horsepower equals wing area purpose letter point out large models generate energy current popular types therefore represent hazard Robert Dunn Olean NY Fast February 1978 Openers point out new RC glider speed record exceeds power speed rec ord nearly 30 mph amazing difference deserves explanation reason attributed. ridiculous airplane outruns engine prop disk actually acts brake airplane power drive should increase its speed cut engine feathered prop An engine turning 13 pitch prop 20000 rpm would start brake airplane until speed exceeds 246 mph prop braking simply too low pitch Kit Bays Downers Grove IL checked qualified person gives opinion 246 mph figure men tioned Bays letter reasonable cidentally statement airplane outruns engine stand editorial com ment added after mention conversa tion Maynard Hill words Maynards note Kit questions prop disc would behave brake plane would go faster prop could feathered know flier saying after RC Power Speed tempt world record wished could rid engine too note Kit used words . would start brake ncede prop too low pitch have ask engine would turn higher pitch necessary rpmor powerful higher rpm engine used re quired question too complex blithe answer Only few people world may know answer fa miliar related factors cluding airplane itself Backyard Circus enjoyed article Leo Vartanian indoor electric very muchI have also used Monogram unit good re suIts Super Star Ace R/O two AA nicads could five minutes about 400 altitude very satisfying performer have flying small field plane designed Im sending some pic tures setting teacup Kodak photos gives idea its size 24 span 12 oz Astro 020 Ace Baby R/O have also flown Cannon Super Mini two chan nel quite successfully really outstand ing feature Electra Flea its rapid climb designed built fly out vacant lot next lived does beautifully gets above phone lines trees roof tops etc less minute gets up about 500 five minute flights Once motor August1978 83 4 LUTON Minor A34,fliIW3,79&I 7 L3rn ddi*hITI High ft 73N 7311 T0 33 flyiR 29fl3.I A/C See dealer NOW NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 373 1173 IiNp73. 933 Ap9RR7djV7VflhIRd K 119 99 3311 S319939 V93 1313 337337 373. 03313 Z Send 2Sf catalog oil FLYLINEs classic kits FLYLINE MODELS INC AR2000RRAVeIuR IR133 drops out batteries discharged comes like spoilers steep steady descent easy get right back tight little lot climbed out also bothered wind no problem wind up 15 mph However isnt particu larly fast flier about 25-30 mph beginners can fly Mitch Poling Seattle WA Smallest CL Plane am trying locate plans small est recorded control line plane ever flown Could please tell would have send get such information reason am doing because friend going try fly smallest smaller would appreciate could help Randy Patterson Roscommon MI dont think anyone knows sure built smallest CL model youll find something interesting page 61 April issue Model Aviation keep light use wider chord area probably could make smallerperhaps keep clipping wing tiny bit time will arrive smallest thing will fly dont fall old trap smaller wings must make plane faster Speed fliers went way years ago learning ship assume angle attack generate enough lift remain airborne just flew slower must enough area thing get step Help Wanted am process building first radio control model would like get touch local clubs may area south west city Boston know clubs Framingham Bridgewater Mas sachusetts Framingham called believe Charles River Club However know name contact person could send information give letter someone could would appreciate very much Before closing must say Model Aviation very superior publication have right proud April issue must qualify best issues magazine field ever published As member AMA appreciate skilled efforts behalf myself other members Fred E Bellows Jr 165 N Main St Sharon MA 0207 have included Mr Belows full ad dress some helpful reader may write him No such club appears MA club roster RC Technique/Myers continued page 12 pack way What thought 6hour charge turned out like 30 hours Another fellow using same Intermatic Model C-i 11 timer en countered same type failure product review product review product review Prop Driver Quadras Called Super Drive geared-down driver develops 22 lbs thrust standard Quadra develops 16 lbs 18-6 8200 rpml turning Grish 24-10 4400 4600 rpm Engine rpm 8800 9200 rpm drive ratio 2 1 Material steel brackets aluminum timing pulleys Bolt-on assem bly Price $14995 Andy Sheber 18497 Brentwood Livonia MI 48154 product review product review product review because charging C/b rate no damage Now before get lot letters subject let us agree necessary charge high-rate batteries high rates work just well charged C/ 10 rate difference wait longer Now back timers lot different models available lot different prices buy cheapest thing available should anticipate possible failures minimum should test item before putting service C-l 11 about cheapest around open up look what get dollar amazing thing get much An occasional failure no reason damn company put ting out inferior product used intended turn house light off failure would unimportant subject testing things people have ever checked actual charging current put out unit supplied manu facturer might surprised what find flying buddies purchased Super System top manufacturers found received C/3 charger instruction manual called 24-hour initial charge usual 16hour working charge Imagine sur prise fried battery pack first time tried charge read same thing happening pur chaser inexpensive set Stream lines newsletter Romeo Area RIG Club Inc edited Mike Naylor Buy yourself VOM Volt-Ohm meter check things out could go other way too might under charging ignorance Learn theory behind what doing check out yourself Good point Mike C W Elmore Forth Worth Texas asks can purchase filter some kind can put TV set eliminate interference occurs operates RC transmitter house answer qualified Yes So much depends situa tion can purchase Low Pass filter electronics store will install tween TV set antenna may cut down interference wont TV weak signal area because radiation times stronger TV signal such instance probably wont help TV set hasnt re-aligned several years very few ever final ly wont help interference getting set some other route antenna TV connected tape re corder turntable tuner etc connects circuit some internal point like volume control 84 Model Aviation HEINKEL HelOOD TIONALS NA Rn pd77.73 9333 3X9 33373311 331313 74 33 flyi.g 93..3.33kA