MIDWEST RIC Models Give choose . theres Midwest model almost kind R/C flyer de sires ATTACKER All-molded styrofoam airplane goes gather fast Rugged its great sport plane easy-to-fly advanced trainer Big 48 span powered 19- 35-size engines 4 chan nels Complete hardware package Designed Jim NewmanKit No 134 STR IKEMASTE R Wing span 55 inches Engine sizes 19 40 Foam wing cores balsa covering material sup plied Balsa plywood fuselage die cut Balsa sheet fin stabilizer machine cut fittings hardware formed wire patis sup plied Designed Jim Newman Kit No 130 am designer drew up plans real Hatz Biplane will trade set pictures copy Aug 77 issue want see article turned out magazine Dudley R Kelly Route 4 Versailles KY Good Spirit As may already know EAA Air Museum Foundation has sponsored construction replica Lindberghs Spirit St Louis now flying around country retracing US tour q j 400 South Indiana St Hobart Indiana 46342 Some excellent pictures Hatz bipe sent us Mr Dudley R Kelly designed big airplane Points up advantage making photos possible details before beginning scale projectmost especially AMA Scale details weigh heavily 6 Model Aviation Hatz Bipelatter ex-modelers Mr Kelly sent us set ofpix real Hatz would make scale builder drool Weve reproduced few Hatz No 195 Plans Service ties between model builders home builders great SUPER CHIPMUNK ARF injection-molded foam 10 19 en gines Wing span 46 Three channels En gine throttle elevator ailerons Four channels Engine throttle elevator ailerons rudder IitNn 1R observance fiftieth anniversary flights Im enclosing brochure explains June 1977 issue magazine appeared two page spread draw ings Spirit far accurate drawings have ever seen airplane intend include full-size planes offered sale would like obtain print original assume larger scale would make valuable addition plans library George Hardie Jr Aircraft & Display Research EAA Air Museum Foundation Hales Corner WI Mr Hardie has already received requested drawings Same-size prints scale drawings done Robinson Wil son others part Berliner article series have offered sale MA curious f readers would bene fit having prints availablethe originals vary twice three times size drawings see maga zine Feeling Good dont ordinarily write letters sort want let know much Ive enjoyed appreciate ex cellent coverage Model viation recent major FF events such USFF Champs FF events Nats FF World Championships narrative photo coverages really first-rate thanks outstanding quality reportage events also want express appreciation fine plans variety FF plans offered Model Aviation Now could have payload ship simple competition A/l about Tad pole oY Grabber going big guns out things would really rounded out good shape Again thanks overall fine Fox 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 Tuff 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 ITEMFUEL LINEPRICEITEMFUEL UNEPUCE 86880Small Neoprene2Pleg.5086885Small Clear Plastic2 Pkg 6881 Medium Neoprene2 PIg.6088886 Medium Clear Plautic2 Plrg.30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 PIrg.40 86883 Small Tuff Line1 Pkg . 5586888 Small Sargical Tubing2 Plrg.50 86884 Medium Tuft Lice1 Ptrg7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Ptcg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer 1o-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 @1977 EK-Prodcrs Inc 779 EK-Products . . uary 1978 7 Continued page 86 SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE CIAPITCHPRICE 5%3489 63489 733%4119 53%456129 94566% 77%139 10467149 1066V 8W149 to6016159 114677% 7Y, 7%8159 it6E1W169 11%67169 126179 12555179 1356219 1496249 1566309 164%6389 W 55106 BLADE 855 EXTRA WIDE SERIES 400 B Poe SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED REGGRO HOLDER OF ALL TIMES RC PYLON RACING DIA PITCHPRICE 6%3%4129 755%6149 7SN 5/N 6N149 8%6% 6% 7 7%7%189 96%7 7A7%189 CONTROL LINE SPEED& RACING CIA PITCHPRICE 4/8A7129 4%55%129 6788%149 7 7%10%11169 889189 89N9%N189 8% 77%189 912 13219 51ARRflW Homebuilts Bill Youmans firstplace win Masters Class Greenville NRCHA Nationals last August seems increasing interest homebuilt helicopters won scratchbuilt own design composite components Bill came within 10 points aceing hover course local flier Norm Holland has developed scratchbuilt using Kavan mechanics tn-cycle landing gear Rev-o-lution canopy Futaba Sl5M ball-bearing servos EK single-stick radio Kraft engine Tach-Tron gover nor weight 12 1/2 pounds very smooth precise enough people inter ested could soon put kit form Look column further details Dual Counter Rotating Head ScratchBuilt Gilbert Laforest Montreal suc cessfully flew counter rotating-head heli copter own design Greenville NRCHA Nats Webra Speed 60 driving both heads unbelievably complicated pushrod system Self-designed transmitter two single sticks dual rudder knobs much Separate collective control head well separate cyclic control Tremendous under taking say nothing about getting mind synchronized hands Radio custom Can-Air Canadian ProLine some radio interference problems Next months column will cover unique finish helicopters first part building Aerospatiale SA-34 1 G Gazelle ducted fan-tail rotor youre flying youre trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Letters continued page 7 quality Model viation money best model aviation magazine field William R Barr AMA 31415 Claremont CA MA policy publish types models eventually shall get around Mr Barrs suggestions Mistaken Identity No doubt have received few letters already rare event havent would like point out photograph lower right hand corner page 25 Aug 1977 issue Model viation incorrectly captioned gentleman photo Rick Pear son winner last years Soar Nats well other contests sailplane holding Paragon Rick did outstanding job flying under less ideal conditions would shame did receive credit display flying skill Since generally true least 75% sailplanes performance direct function pilots skill would follow mention sailplane used would significant have no doubt uninten tional error know would want errors called attention proper caption can used Ed Slobod Pierce Aero Company Nonthridge CA Size It/Powers continued page 13 ing slower speed reduce somewhat power requirements because scaling down proto type its weight-empty condition rather its gross-weight condition thats ut Size Questions comments may ad dressed Bradford W Powers care magazine Seastrutz/Wi son continued page 18 full throttle some down-elevator Ed pulled up Seastrutz oil like scared duck full stall attitude 50 feet hit wind blowing toward hill blown end-over-end trees Damage minor Test flying continued next week Fall Brimfield meet time stabilizer shim under its leading edge rudder area doubled Seastrutz flew beautifully Among its test pilots Ted Straders son Eric testified flew very much like its predecessor Strutz Echo Seastrutz built mci dences shown will perform very well relatively docile its 46-in wing span compact biplane configuration felt might too quick average flier case diffi cult machine fly land water Have fun Radio Technique/Myers continued page 14 An ammeter measure charging discharging operating currents turntable drum-type chart feed measure servo transmit time shaker find intermittent prob lems heat lamp can Freezit similar chiller locate temperature-sensitive compon ents Special tools various types like desoldering irons Youve seen lot items listed under additional advertisements probability should leave will describe some simple non destructive tests should perform 86 Model Aviation NEWS FLASH Bob Smith Chatsworth CA set new World Speed Record June 19 Pylon mula 11125 RevUp 8%-6% new Pylon RaC ing prop OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st RC Sport Scale 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior 1st CL Combat O & Sr 1st CL Slow Comb OP & Sr 1st CL Class 0 Speed Open 1st CL Class C Speed Jr & Sr 1st CLCIassB Speed Op & Sr 1st CL Cl Speed Op Sr Jr 1st FE Class B Open 1st FE Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OP HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PIDOF 1st CL Carrier II Op Jr Sr 1st CL Carrier Jr & Sr 1st CL Formula 40 Opec 1st CL Class 6 Proto Jr
Edition: Model Aviation - 1978/01
Page Numbers: 6, 7, 86
MIDWEST RIC Models Give choose . theres Midwest model almost kind R/C flyer de sires ATTACKER All-molded styrofoam airplane goes gather fast Rugged its great sport plane easy-to-fly advanced trainer Big 48 span powered 19- 35-size engines 4 chan nels Complete hardware package Designed Jim NewmanKit No 134 STR IKEMASTE R Wing span 55 inches Engine sizes 19 40 Foam wing cores balsa covering material sup plied Balsa plywood fuselage die cut Balsa sheet fin stabilizer machine cut fittings hardware formed wire patis sup plied Designed Jim Newman Kit No 130 am designer drew up plans real Hatz Biplane will trade set pictures copy Aug 77 issue want see article turned out magazine Dudley R Kelly Route 4 Versailles KY Good Spirit As may already know EAA Air Museum Foundation has sponsored construction replica Lindberghs Spirit St Louis now flying around country retracing US tour q j 400 South Indiana St Hobart Indiana 46342 Some excellent pictures Hatz bipe sent us Mr Dudley R Kelly designed big airplane Points up advantage making photos possible details before beginning scale projectmost especially AMA Scale details weigh heavily 6 Model Aviation Hatz Bipelatter ex-modelers Mr Kelly sent us set ofpix real Hatz would make scale builder drool Weve reproduced few Hatz No 195 Plans Service ties between model builders home builders great SUPER CHIPMUNK ARF injection-molded foam 10 19 en gines Wing span 46 Three channels En gine throttle elevator ailerons Four channels Engine throttle elevator ailerons rudder IitNn 1R observance fiftieth anniversary flights Im enclosing brochure explains June 1977 issue magazine appeared two page spread draw ings Spirit far accurate drawings have ever seen airplane intend include full-size planes offered sale would like obtain print original assume larger scale would make valuable addition plans library George Hardie Jr Aircraft & Display Research EAA Air Museum Foundation Hales Corner WI Mr Hardie has already received requested drawings Same-size prints scale drawings done Robinson Wil son others part Berliner article series have offered sale MA curious f readers would bene fit having prints availablethe originals vary twice three times size drawings see maga zine Feeling Good dont ordinarily write letters sort want let know much Ive enjoyed appreciate ex cellent coverage Model viation recent major FF events such USFF Champs FF events Nats FF World Championships narrative photo coverages really first-rate thanks outstanding quality reportage events also want express appreciation fine plans variety FF plans offered Model Aviation Now could have payload ship simple competition A/l about Tad pole oY Grabber going big guns out things would really rounded out good shape Again thanks overall fine Fox 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 Tuff 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 ITEMFUEL LINEPRICEITEMFUEL UNEPUCE 86880Small Neoprene2Pleg.5086885Small Clear Plastic2 Pkg 6881 Medium Neoprene2 PIg.6088886 Medium Clear Plautic2 Plrg.30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 PIrg.40 86883 Small Tuff Line1 Pkg . 5586888 Small Sargical Tubing2 Plrg.50 86884 Medium Tuft Lice1 Ptrg7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Ptcg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer 1o-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 @1977 EK-Prodcrs Inc 779 EK-Products . . uary 1978 7 Continued page 86 SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE CIAPITCHPRICE 5%3489 63489 733%4119 53%456129 94566% 77%139 10467149 1066V 8W149 to6016159 114677% 7Y, 7%8159 it6E1W169 11%67169 126179 12555179 1356219 1496249 1566309 164%6389 W 55106 BLADE 855 EXTRA WIDE SERIES 400 B Poe SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED REGGRO HOLDER OF ALL TIMES RC PYLON RACING DIA PITCHPRICE 6%3%4129 755%6149 7SN 5/N 6N149 8%6% 6% 7 7%7%189 96%7 7A7%189 CONTROL LINE SPEED& RACING CIA PITCHPRICE 4/8A7129 4%55%129 6788%149 7 7%10%11169 889189 89N9%N189 8% 77%189 912 13219 51ARRflW Homebuilts Bill Youmans firstplace win Masters Class Greenville NRCHA Nationals last August seems increasing interest homebuilt helicopters won scratchbuilt own design composite components Bill came within 10 points aceing hover course local flier Norm Holland has developed scratchbuilt using Kavan mechanics tn-cycle landing gear Rev-o-lution canopy Futaba Sl5M ball-bearing servos EK single-stick radio Kraft engine Tach-Tron gover nor weight 12 1/2 pounds very smooth precise enough people inter ested could soon put kit form Look column further details Dual Counter Rotating Head ScratchBuilt Gilbert Laforest Montreal suc cessfully flew counter rotating-head heli copter own design Greenville NRCHA Nats Webra Speed 60 driving both heads unbelievably complicated pushrod system Self-designed transmitter two single sticks dual rudder knobs much Separate collective control head well separate cyclic control Tremendous under taking say nothing about getting mind synchronized hands Radio custom Can-Air Canadian ProLine some radio interference problems Next months column will cover unique finish helicopters first part building Aerospatiale SA-34 1 G Gazelle ducted fan-tail rotor youre flying youre trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Letters continued page 7 quality Model viation money best model aviation magazine field William R Barr AMA 31415 Claremont CA MA policy publish types models eventually shall get around Mr Barrs suggestions Mistaken Identity No doubt have received few letters already rare event havent would like point out photograph lower right hand corner page 25 Aug 1977 issue Model viation incorrectly captioned gentleman photo Rick Pear son winner last years Soar Nats well other contests sailplane holding Paragon Rick did outstanding job flying under less ideal conditions would shame did receive credit display flying skill Since generally true least 75% sailplanes performance direct function pilots skill would follow mention sailplane used would significant have no doubt uninten tional error know would want errors called attention proper caption can used Ed Slobod Pierce Aero Company Nonthridge CA Size It/Powers continued page 13 ing slower speed reduce somewhat power requirements because scaling down proto type its weight-empty condition rather its gross-weight condition thats ut Size Questions comments may ad dressed Bradford W Powers care magazine Seastrutz/Wi son continued page 18 full throttle some down-elevator Ed pulled up Seastrutz oil like scared duck full stall attitude 50 feet hit wind blowing toward hill blown end-over-end trees Damage minor Test flying continued next week Fall Brimfield meet time stabilizer shim under its leading edge rudder area doubled Seastrutz flew beautifully Among its test pilots Ted Straders son Eric testified flew very much like its predecessor Strutz Echo Seastrutz built mci dences shown will perform very well relatively docile its 46-in wing span compact biplane configuration felt might too quick average flier case diffi cult machine fly land water Have fun Radio Technique/Myers continued page 14 An ammeter measure charging discharging operating currents turntable drum-type chart feed measure servo transmit time shaker find intermittent prob lems heat lamp can Freezit similar chiller locate temperature-sensitive compon ents Special tools various types like desoldering irons Youve seen lot items listed under additional advertisements probability should leave will describe some simple non destructive tests should perform 86 Model Aviation NEWS FLASH Bob Smith Chatsworth CA set new World Speed Record June 19 Pylon mula 11125 RevUp 8%-6% new Pylon RaC ing prop OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st RC Sport Scale 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior 1st CL Combat O & Sr 1st CL Slow Comb OP & Sr 1st CL Class 0 Speed Open 1st CL Class C Speed Jr & Sr 1st CLCIassB Speed Op & Sr 1st CL Cl Speed Op Sr Jr 1st FE Class B Open 1st FE Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OP HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PIDOF 1st CL Carrier II Op Jr Sr 1st CL Carrier Jr & Sr 1st CL Formula 40 Opec 1st CL Class 6 Proto Jr
Edition: Model Aviation - 1978/01
Page Numbers: 6, 7, 86
MIDWEST RIC Models Give choose . theres Midwest model almost kind R/C flyer de sires ATTACKER All-molded styrofoam airplane goes gather fast Rugged its great sport plane easy-to-fly advanced trainer Big 48 span powered 19- 35-size engines 4 chan nels Complete hardware package Designed Jim NewmanKit No 134 STR IKEMASTE R Wing span 55 inches Engine sizes 19 40 Foam wing cores balsa covering material sup plied Balsa plywood fuselage die cut Balsa sheet fin stabilizer machine cut fittings hardware formed wire patis sup plied Designed Jim Newman Kit No 130 am designer drew up plans real Hatz Biplane will trade set pictures copy Aug 77 issue want see article turned out magazine Dudley R Kelly Route 4 Versailles KY Good Spirit As may already know EAA Air Museum Foundation has sponsored construction replica Lindberghs Spirit St Louis now flying around country retracing US tour q j 400 South Indiana St Hobart Indiana 46342 Some excellent pictures Hatz bipe sent us Mr Dudley R Kelly designed big airplane Points up advantage making photos possible details before beginning scale projectmost especially AMA Scale details weigh heavily 6 Model Aviation Hatz Bipelatter ex-modelers Mr Kelly sent us set ofpix real Hatz would make scale builder drool Weve reproduced few Hatz No 195 Plans Service ties between model builders home builders great SUPER CHIPMUNK ARF injection-molded foam 10 19 en gines Wing span 46 Three channels En gine throttle elevator ailerons Four channels Engine throttle elevator ailerons rudder IitNn 1R observance fiftieth anniversary flights Im enclosing brochure explains June 1977 issue magazine appeared two page spread draw ings Spirit far accurate drawings have ever seen airplane intend include full-size planes offered sale would like obtain print original assume larger scale would make valuable addition plans library George Hardie Jr Aircraft & Display Research EAA Air Museum Foundation Hales Corner WI Mr Hardie has already received requested drawings Same-size prints scale drawings done Robinson Wil son others part Berliner article series have offered sale MA curious f readers would bene fit having prints availablethe originals vary twice three times size drawings see maga zine Feeling Good dont ordinarily write letters sort want let know much Ive enjoyed appreciate ex cellent coverage Model viation recent major FF events such USFF Champs FF events Nats FF World Championships narrative photo coverages really first-rate thanks outstanding quality reportage events also want express appreciation fine plans variety FF plans offered Model Aviation Now could have payload ship simple competition A/l about Tad pole oY Grabber going big guns out things would really rounded out good shape Again thanks overall fine Fox 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 Tuff 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 ITEMFUEL LINEPRICEITEMFUEL UNEPUCE 86880Small Neoprene2Pleg.5086885Small Clear Plastic2 Pkg 6881 Medium Neoprene2 PIg.6088886 Medium Clear Plautic2 Plrg.30 86882 Large Neoprene2 Pkg7086887 Large Clear Plastic2 PIrg.40 86883 Small Tuff Line1 Pkg . 5586888 Small Sargical Tubing2 Plrg.50 86884 Medium Tuft Lice1 Ptrg7086889 Med Surgical Tubing2 Pkg.50 86851 Large Tuft Line1 Ptcg10086890 Large Surgical Tubing2 Pkg.60 FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith Arkansas 72901 e 501-646-1656 Answer 1o-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 @1977 EK-Prodcrs Inc 779 EK-Products . . uary 1978 7 Continued page 86 SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE CIAPITCHPRICE 5%3489 63489 733%4119 53%456129 94566% 77%139 10467149 1066V 8W149 to6016159 114677% 7Y, 7%8159 it6E1W169 11%67169 126179 12555179 1356219 1496249 1566309 164%6389 W 55106 BLADE 855 EXTRA WIDE SERIES 400 B Poe SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED REGGRO HOLDER OF ALL TIMES RC PYLON RACING DIA PITCHPRICE 6%3%4129 755%6149 7SN 5/N 6N149 8%6% 6% 7 7%7%189 96%7 7A7%189 CONTROL LINE SPEED& RACING CIA PITCHPRICE 4/8A7129 4%55%129 6788%149 7 7%10%11169 889189 89N9%N189 8% 77%189 912 13219 51ARRflW Homebuilts Bill Youmans firstplace win Masters Class Greenville NRCHA Nationals last August seems increasing interest homebuilt helicopters won scratchbuilt own design composite components Bill came within 10 points aceing hover course local flier Norm Holland has developed scratchbuilt using Kavan mechanics tn-cycle landing gear Rev-o-lution canopy Futaba Sl5M ball-bearing servos EK single-stick radio Kraft engine Tach-Tron gover nor weight 12 1/2 pounds very smooth precise enough people inter ested could soon put kit form Look column further details Dual Counter Rotating Head ScratchBuilt Gilbert Laforest Montreal suc cessfully flew counter rotating-head heli copter own design Greenville NRCHA Nats Webra Speed 60 driving both heads unbelievably complicated pushrod system Self-designed transmitter two single sticks dual rudder knobs much Separate collective control head well separate cyclic control Tremendous under taking say nothing about getting mind synchronized hands Radio custom Can-Air Canadian ProLine some radio interference problems Next months column will cover unique finish helicopters first part building Aerospatiale SA-34 1 G Gazelle ducted fan-tail rotor youre flying youre trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Letters continued page 7 quality Model viation money best model aviation magazine field William R Barr AMA 31415 Claremont CA MA policy publish types models eventually shall get around Mr Barrs suggestions Mistaken Identity No doubt have received few letters already rare event havent would like point out photograph lower right hand corner page 25 Aug 1977 issue Model viation incorrectly captioned gentleman photo Rick Pear son winner last years Soar Nats well other contests sailplane holding Paragon Rick did outstanding job flying under less ideal conditions would shame did receive credit display flying skill Since generally true least 75% sailplanes performance direct function pilots skill would follow mention sailplane used would significant have no doubt uninten tional error know would want errors called attention proper caption can used Ed Slobod Pierce Aero Company Nonthridge CA Size It/Powers continued page 13 ing slower speed reduce somewhat power requirements because scaling down proto type its weight-empty condition rather its gross-weight condition thats ut Size Questions comments may ad dressed Bradford W Powers care magazine Seastrutz/Wi son continued page 18 full throttle some down-elevator Ed pulled up Seastrutz oil like scared duck full stall attitude 50 feet hit wind blowing toward hill blown end-over-end trees Damage minor Test flying continued next week Fall Brimfield meet time stabilizer shim under its leading edge rudder area doubled Seastrutz flew beautifully Among its test pilots Ted Straders son Eric testified flew very much like its predecessor Strutz Echo Seastrutz built mci dences shown will perform very well relatively docile its 46-in wing span compact biplane configuration felt might too quick average flier case diffi cult machine fly land water Have fun Radio Technique/Myers continued page 14 An ammeter measure charging discharging operating currents turntable drum-type chart feed measure servo transmit time shaker find intermittent prob lems heat lamp can Freezit similar chiller locate temperature-sensitive compon ents Special tools various types like desoldering irons Youve seen lot items listed under additional advertisements probability should leave will describe some simple non destructive tests should perform 86 Model Aviation NEWS FLASH Bob Smith Chatsworth CA set new World Speed Record June 19 Pylon mula 11125 RevUp 8%-6% new Pylon RaC ing prop OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st RC Sport Scale 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior 1st CL Combat O & Sr 1st CL Slow Comb OP & Sr 1st CL Class 0 Speed Open 1st CL Class C Speed Jr & Sr 1st CLCIassB Speed Op & Sr 1st CL Cl Speed Op Sr Jr 1st FE Class B Open 1st FE Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OP HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PIDOF 1st CL Carrier II Op Jr Sr 1st CL Carrier Jr & Sr 1st CL Formula 40 Opec 1st CL Class 6 Proto Jr