Meredith Lueken left displays Bill Hannans Moustique tray won Farman proxy-flown Pete Redhead Woodvale England Its CO-2-powered Right model photographed few days before shipment contest England its plywood shipping case documentation photo full-size prototype Small compartment lower left holds spare parts Hardwood dowels behind wing serve crush-resistant spacers box lid fastened screws Model returned safely after traveling 11000 miles won Flightmasters contest few days later Bill Hannan WHILE worlds politicians seem bent upon erecting barriers between nations few modelers quietly improving relations between distant peoples Some fortunate being able travel foreign lands participate person others exploring another avenue method Participating international model contests proxy friendships established satisfaction gained truly rewarding cost minimal Historically such contests have existed years 1923 Englands Lord Wakefield sponsored now-famous cup intended stimulate international model meets Among rules Models may flown proxy appointed entrant Provisions also made appointing experienced flier unable locate proxy themselves Proxy-flying model airplanes goes back first Wakefield Cup competition 1923 Perhaps earlier examples could found Modelers still finding low-cost way expanding horizons author provides some helpful hints getting involved foreign entry first year proxy-flown Dutch model fact event actually delayed pending its ar rival 1934 six American models proxy-flown Wakefield competition various other countries have repre sented manner through years Strangely way FAI recently dropped proxy-flying early NAA National Model Airplane Tournaments sponsored American Boy magazine also solicited mail-in entries todays better-known RC Scale mod elers Lou Proctor won 1929 though unable attend person reward An all-expense paid trip July 1983 67 Phil Cox constructed ligntweignt strong box shipping Waterman Racer Peanut California postal contest Warren Shipp photo Mike Coiling proxy-flew Peanut Scale model Walt Mooney England personally delivered prize print present rate inflation pound worth peanuts author examines Milan Kachas Zlin Peanut safely mailed California proxy contest way Czechoslovakia After sent England another event Peanut Scale Helicopter California atop first-place cup suc cessfully flown Charles Sotich Illinois Peanut Grand Prix West Baden IN Competition loot includes cup T-shirt razor-plane souvenir ball-point pen won unorthodox-plane class 68 Model Aviation / lettering Peanut model shipping container way en- uu--puwereu riurilirop NiM built Dan Walton Northrop couraging caution post office Author thinks Floridas Dr John Flying Wing Contest shipped wintry Kansas sunny Calif orMartin may have responsible rather novel idea nia symbolized its landing orange tree Eric Coates World Champs KU Scale luage prepares ny authors Peanut Farman Moustique Cardington England airship hangar Model hand-carried late Russ Barrera New Jersey Vic Wilson took overseas Eric Ron Moulton photograph Jim Hykas Peanut Hangar housed e well-traveled models shown Bill Hannans Fokker F2 entered Philadelphia Snoopys Doghouse outer box shown back- Museum contest via Harvey Lickstein city Benno Sabels Bleriot canard center mailed ground shipped Ohio California Germany participate California Indiana proxy contests Ray Malmstroms Avro Avis Model Builder proxy-flown contest bipe lower right flew California Proxy Peanut Contest after having shipped England Europe $200 cash $100 cup gold medal Leaping forward time 1966 find winner international Control Line Scale event held conjunction FAI Control Line World Championships American Warren Maczuras Grumman Gulfhawk proxy-flown England Stunt Judge Bob Gialdini precedents firmly established increasing travel costs proxy contests may just wave future Basically two distinct types proxy events models flown builders certain day within certain time frame written results mailed contest organizer scor ing Ed Whitten Model Aviation has con ducted such events Juniors Fly ing Aces Club has offered such categories years via FAC newsletter second type proxy contest involves actually mailing models specified location participation Perhaps great est quantity events during past 10 years has Peanut Scale surprising consider relative ease shipping tiny craft contrast larger models often require demountable parts oversize containers Regardless varieties types cluding ultra-fragile microfilm-covered models have successfully sent com petitions various parts world few guidelines presented may care share fun First foremost obtain copy contest rules far advance possible Regu lations differ widely vital under stand objectives before entering stance some Flying Scale rules encourage duration others seem concentrate improving scale accuracy workmanship Certain groups allow handlaunching models others specify rise-off-ground starts allow bonus points doing Next allow plenty time Constructing model specific contest always seems consume hours anticipated Alter natively may possible enter existing models Testing packing Continued page 164 July 1983 69 Walt Mooneys Found model Canadian prototype its all-balsa ping box Model secured floor rubberbands Note sturdy anti-crush blocks side model Roy Yates England releases FF Rubber Scale McDonald S21 sent Calitornia MA columnist Bill Warner Model won its class Woodvale 1980 Photo John ODonnell Oops example what shouldnt hap pen Fortunately Bob Peck California able repair Roger Aimes French Nieuport Racer time place Model Builder magazines proxy event held back Pete Branigan left holds Ichiro Yamadas model Russian Polikarpoy 117 send Woodvale contest England Japan right helper Ron Walker ODonnell photo performance certainly strengthens frontal area pan considerably California Racing under adverse condi tions just received photograph Cal ifornia showing Bob Kerr just turned new WAM record time 50001 using muffler-equipped Rat Racer Mufflers required WAM rules picture can sec muffler protruding out area mini-pipe usually exits addi tion can see racing circles over lap speed bump parking lot guess can say racing under ad verse conditions' comments suggestions al ways appreciated John C Ballard 10102 Kimblewick Dr Louisville KY 40223 CL Speed/Hempel Continued page 66 rately however propellers required particular assumed brake horsepower rpm speed thrust horsepower required standard sea level atmospheric conditions study summaries points out tiny changes diameter pitch affect power requirement speed course propellers must have true helical pitch least 30%-radius point blade tips pitch/diameter ratio should di minish towards hub two-blade pro pellers suffer high tip-speed efficiency-loss requires greater en gine power Ditto one-blader although studied specifically Three bladed props appear provide power required minimum brake horsepower arid tip-speed efficiency-loss Three-blade smoothness circular flight may also plus So study FAI CL Speed airplane warts hope might reveal something useful different per spective o new idea stranger competition class Id happy receive Proxy/Hannan Continued page 69 can also soak up hours almost alarming fashion Allow adequate time shipping too air mail delays can occur models have known miss contests little day account Additional hang ups have encountered via postal strikes over-zealous customs officers hap pily such incidents have infrequent Careful packing must models transported safely unrealistic ex pect Fragile Side Up notices much protecting delicate models Rather should strive bullet-proof con tainer withstand anticipated stresses Small suitcases metal boxes wooden boxes reinforced cardboard cartons have successfully employed Some builders prefer box-within-a-box con cept may help isolate contents outside pressure shocks Continued page 165 comments critique findings best regards Jerry Rautio 18 Highland Ct Fitchburg MA 01420 Well fellow Speed fliers what think can write Jerry directly course Id like know what com ments too Remember Jerrys work based directly proven full-scale propeller-design science very difficult know what correction factors must applied model prac tices use very high rpms propblade airfoils almost microscopic com pared full-scale ones brings kinds air-property effects scaleinduced effects picture Yet various coefficients efficiency correc tion factors still exist us though may different imagined Jerrys investigation Its place start Gene Hempel 301 N Yale Dr. Garland TX 75042 Table 2 ENGINE/PROPELLER SuMMARIEs FOR CLEAN AIRPLANE THP 165 nel No BIadm 3 2 liochosi PlO BI-IP RPM MPH 6169c5667 918 19 39000 165 6895 58658902135000165 THP0 ToTCp 5971135257944980916 9401134257 745770390 FOR CLEAR AIRPLANE THP 170 mph 362 70 5834930 21 35000170 27045 6008852 237 35000170 8991238273047260913 5211236272649670286 FOR AvERAGE AIRPLANE THPr 165 mph 36301 5699904 21 39000165 27081 5801818 239 35000165 9861230279548150928 5151230279550690395 Propulsive efficiency maw elm airspeed THP0 Thesat HP available maw elm aiesoeod Ta Thrast lb available may dee airapead Ta ic thraso Est V 0 C0 Power CanffieientBHP 590 P an3 CT fivieet tftraat P 00239 tao-leeel nRPM/6Q 0Ojam. Pt KTipSpeecl Carrection Poelor 164 Model Aviation HOt*iy H am Wieg Span -789 9mg Area 550 Sq SENSOAR glider HOBBY HORN Eaclasivel HOBBY HORN Kit SENSOAR Glider kit high qaality kit Machine catsanded parts Select quality balsa spruce Detailed plans written restructrons Far THERMAL yr SLOPE yr 115 ELECTRIC POWER VALUE PRICED a1 51600 OLLI TItR ICflS butt Partial Ktts P & W Semi-Kilt Cacibined seilh full atripeOOd plan Nose bscl Wire Windose etc Mat Ncles may purchased Just semi kits sr seith plans- serite sr call prices i93f Baceaneerf4$Si 1936 Cilpiser MR i-72-$39 1937 Dollaire SptaertS5$ft 1940 Ravger-40 $27 1939 Mercury72$Sf 1935 MIss Ametitaf4559 1941 Playboy Jr-54-$29 1941 Playbsy Sr-fO$46 iS3f Power Hsasef4--$43 1940 Sailpiane-7f-- $74 1940 So Long-St$2f 1939 Trentsn Terror-72-$32 i939 ZipperS4--$49 i925 Ksrda Wokelield-44 $17 MIDtflAP MODEL CO Sems-kttS Combined u/strip 11311 Flying Qaaker-f4-$49 1937 Qualcer Flssh-07535 1937 Long Cabin79$42 1937 Air Cbieffl$40 STRUCKS 1940 79 Span 935 Sq uiOW ruler SEMI KIT Plan inclj $3300 Combo Pull Kit 56300 SCALE PLANS ond DRAWINGS SSO HEINKEL HEiSSO 02 SOs $1000 SHiPPINO AND HANDLiNO sge TALOGUE Up $900 sdd $150 $290 PP/lsl Class $501 $2990 add $225 copy mill sent $2001 $4509 add $300 free--when requested$45 01 $7009 add $350 order aver $7000 add $400 HOBBY HORN CA Addressees add 6% tax vahobby specialliesac Send 510 visa/MC#Eap 15173 Maran Street tAl Check allow up tO 30 PO Boa 2212 days check clearance Westminster Ca 92693 CDDEsact CharKes 719 893 8311 Fidi Cash OnlyliAll UPS 7t9 8901203 AIRCRAFT OUALITV ALLEN SCREW SETS FOR ALL BRAND ENGINES Screw Sets come complete Allen Wrench available American metric sizes Write Call free price list RJL INDUSTRIES PO BOX 5654 PASADENA CA 91107 213 359-0016 795-9821 30 PACIFIC ACE complete kit includes printwood stripwood wheels rubber propeller real Japanese tissue Price $750 Plus $150 5&H SEAGLEN MODEL CO Box 123 Plympton Ma 02367
Edition: Model Aviation - 1983/07
Page Numbers: 67, 68, 69, 164
Meredith Lueken left displays Bill Hannans Moustique tray won Farman proxy-flown Pete Redhead Woodvale England Its CO-2-powered Right model photographed few days before shipment contest England its plywood shipping case documentation photo full-size prototype Small compartment lower left holds spare parts Hardwood dowels behind wing serve crush-resistant spacers box lid fastened screws Model returned safely after traveling 11000 miles won Flightmasters contest few days later Bill Hannan WHILE worlds politicians seem bent upon erecting barriers between nations few modelers quietly improving relations between distant peoples Some fortunate being able travel foreign lands participate person others exploring another avenue method Participating international model contests proxy friendships established satisfaction gained truly rewarding cost minimal Historically such contests have existed years 1923 Englands Lord Wakefield sponsored now-famous cup intended stimulate international model meets Among rules Models may flown proxy appointed entrant Provisions also made appointing experienced flier unable locate proxy themselves Proxy-flying model airplanes goes back first Wakefield Cup competition 1923 Perhaps earlier examples could found Modelers still finding low-cost way expanding horizons author provides some helpful hints getting involved foreign entry first year proxy-flown Dutch model fact event actually delayed pending its ar rival 1934 six American models proxy-flown Wakefield competition various other countries have repre sented manner through years Strangely way FAI recently dropped proxy-flying early NAA National Model Airplane Tournaments sponsored American Boy magazine also solicited mail-in entries todays better-known RC Scale mod elers Lou Proctor won 1929 though unable attend person reward An all-expense paid trip July 1983 67 Phil Cox constructed ligntweignt strong box shipping Waterman Racer Peanut California postal contest Warren Shipp photo Mike Coiling proxy-flew Peanut Scale model Walt Mooney England personally delivered prize print present rate inflation pound worth peanuts author examines Milan Kachas Zlin Peanut safely mailed California proxy contest way Czechoslovakia After sent England another event Peanut Scale Helicopter California atop first-place cup suc cessfully flown Charles Sotich Illinois Peanut Grand Prix West Baden IN Competition loot includes cup T-shirt razor-plane souvenir ball-point pen won unorthodox-plane class 68 Model Aviation / lettering Peanut model shipping container way en- uu--puwereu riurilirop NiM built Dan Walton Northrop couraging caution post office Author thinks Floridas Dr John Flying Wing Contest shipped wintry Kansas sunny Calif orMartin may have responsible rather novel idea nia symbolized its landing orange tree Eric Coates World Champs KU Scale luage prepares ny authors Peanut Farman Moustique Cardington England airship hangar Model hand-carried late Russ Barrera New Jersey Vic Wilson took overseas Eric Ron Moulton photograph Jim Hykas Peanut Hangar housed e well-traveled models shown Bill Hannans Fokker F2 entered Philadelphia Snoopys Doghouse outer box shown back- Museum contest via Harvey Lickstein city Benno Sabels Bleriot canard center mailed ground shipped Ohio California Germany participate California Indiana proxy contests Ray Malmstroms Avro Avis Model Builder proxy-flown contest bipe lower right flew California Proxy Peanut Contest after having shipped England Europe $200 cash $100 cup gold medal Leaping forward time 1966 find winner international Control Line Scale event held conjunction FAI Control Line World Championships American Warren Maczuras Grumman Gulfhawk proxy-flown England Stunt Judge Bob Gialdini precedents firmly established increasing travel costs proxy contests may just wave future Basically two distinct types proxy events models flown builders certain day within certain time frame written results mailed contest organizer scor ing Ed Whitten Model Aviation has con ducted such events Juniors Fly ing Aces Club has offered such categories years via FAC newsletter second type proxy contest involves actually mailing models specified location participation Perhaps great est quantity events during past 10 years has Peanut Scale surprising consider relative ease shipping tiny craft contrast larger models often require demountable parts oversize containers Regardless varieties types cluding ultra-fragile microfilm-covered models have successfully sent com petitions various parts world few guidelines presented may care share fun First foremost obtain copy contest rules far advance possible Regu lations differ widely vital under stand objectives before entering stance some Flying Scale rules encourage duration others seem concentrate improving scale accuracy workmanship Certain groups allow handlaunching models others specify rise-off-ground starts allow bonus points doing Next allow plenty time Constructing model specific contest always seems consume hours anticipated Alter natively may possible enter existing models Testing packing Continued page 164 July 1983 69 Walt Mooneys Found model Canadian prototype its all-balsa ping box Model secured floor rubberbands Note sturdy anti-crush blocks side model Roy Yates England releases FF Rubber Scale McDonald S21 sent Calitornia MA columnist Bill Warner Model won its class Woodvale 1980 Photo John ODonnell Oops example what shouldnt hap pen Fortunately Bob Peck California able repair Roger Aimes French Nieuport Racer time place Model Builder magazines proxy event held back Pete Branigan left holds Ichiro Yamadas model Russian Polikarpoy 117 send Woodvale contest England Japan right helper Ron Walker ODonnell photo performance certainly strengthens frontal area pan considerably California Racing under adverse condi tions just received photograph Cal ifornia showing Bob Kerr just turned new WAM record time 50001 using muffler-equipped Rat Racer Mufflers required WAM rules picture can sec muffler protruding out area mini-pipe usually exits addi tion can see racing circles over lap speed bump parking lot guess can say racing under ad verse conditions' comments suggestions al ways appreciated John C Ballard 10102 Kimblewick Dr Louisville KY 40223 CL Speed/Hempel Continued page 66 rately however propellers required particular assumed brake horsepower rpm speed thrust horsepower required standard sea level atmospheric conditions study summaries points out tiny changes diameter pitch affect power requirement speed course propellers must have true helical pitch least 30%-radius point blade tips pitch/diameter ratio should di minish towards hub two-blade pro pellers suffer high tip-speed efficiency-loss requires greater en gine power Ditto one-blader although studied specifically Three bladed props appear provide power required minimum brake horsepower arid tip-speed efficiency-loss Three-blade smoothness circular flight may also plus So study FAI CL Speed airplane warts hope might reveal something useful different per spective o new idea stranger competition class Id happy receive Proxy/Hannan Continued page 69 can also soak up hours almost alarming fashion Allow adequate time shipping too air mail delays can occur models have known miss contests little day account Additional hang ups have encountered via postal strikes over-zealous customs officers hap pily such incidents have infrequent Careful packing must models transported safely unrealistic ex pect Fragile Side Up notices much protecting delicate models Rather should strive bullet-proof con tainer withstand anticipated stresses Small suitcases metal boxes wooden boxes reinforced cardboard cartons have successfully employed Some builders prefer box-within-a-box con cept may help isolate contents outside pressure shocks Continued page 165 comments critique findings best regards Jerry Rautio 18 Highland Ct Fitchburg MA 01420 Well fellow Speed fliers what think can write Jerry directly course Id like know what com ments too Remember Jerrys work based directly proven full-scale propeller-design science very difficult know what correction factors must applied model prac tices use very high rpms propblade airfoils almost microscopic com pared full-scale ones brings kinds air-property effects scaleinduced effects picture Yet various coefficients efficiency correc tion factors still exist us though may different imagined Jerrys investigation Its place start Gene Hempel 301 N Yale Dr. Garland TX 75042 Table 2 ENGINE/PROPELLER SuMMARIEs FOR CLEAN AIRPLANE THP 165 nel No BIadm 3 2 liochosi PlO BI-IP RPM MPH 6169c5667 918 19 39000 165 6895 58658902135000165 THP0 ToTCp 5971135257944980916 9401134257 745770390 FOR CLEAR AIRPLANE THP 170 mph 362 70 5834930 21 35000170 27045 6008852 237 35000170 8991238273047260913 5211236272649670286 FOR AvERAGE AIRPLANE THPr 165 mph 36301 5699904 21 39000165 27081 5801818 239 35000165 9861230279548150928 5151230279550690395 Propulsive efficiency maw elm airspeed THP0 Thesat HP available maw elm aiesoeod Ta Thrast lb available may dee airapead Ta ic thraso Est V 0 C0 Power CanffieientBHP 590 P an3 CT fivieet tftraat P 00239 tao-leeel nRPM/6Q 0Ojam. Pt KTipSpeecl Carrection Poelor 164 Model Aviation HOt*iy H am Wieg Span -789 9mg Area 550 Sq SENSOAR glider HOBBY HORN Eaclasivel HOBBY HORN Kit SENSOAR Glider kit high qaality kit Machine catsanded parts Select quality balsa spruce Detailed plans written restructrons Far THERMAL yr SLOPE yr 115 ELECTRIC POWER VALUE PRICED a1 51600 OLLI TItR ICflS butt Partial Ktts P & W Semi-Kilt Cacibined seilh full atripeOOd plan Nose bscl Wire Windose etc Mat Ncles may purchased Just semi kits sr seith plans- serite sr call prices i93f Baceaneerf4$Si 1936 Cilpiser MR i-72-$39 1937 Dollaire SptaertS5$ft 1940 Ravger-40 $27 1939 Mercury72$Sf 1935 MIss Ametitaf4559 1941 Playboy Jr-54-$29 1941 Playbsy Sr-fO$46 iS3f Power Hsasef4--$43 1940 Sailpiane-7f-- $74 1940 So Long-St$2f 1939 Trentsn Terror-72-$32 i939 ZipperS4--$49 i925 Ksrda Wokelield-44 $17 MIDtflAP MODEL CO Sems-kttS Combined u/strip 11311 Flying Qaaker-f4-$49 1937 Qualcer Flssh-07535 1937 Long Cabin79$42 1937 Air Cbieffl$40 STRUCKS 1940 79 Span 935 Sq uiOW ruler SEMI KIT Plan inclj $3300 Combo Pull Kit 56300 SCALE PLANS ond DRAWINGS SSO HEINKEL HEiSSO 02 SOs $1000 SHiPPINO AND HANDLiNO sge TALOGUE Up $900 sdd $150 $290 PP/lsl Class $501 $2990 add $225 copy mill sent $2001 $4509 add $300 free--when requested$45 01 $7009 add $350 order aver $7000 add $400 HOBBY HORN CA Addressees add 6% tax vahobby specialliesac Send 510 visa/MC#Eap 15173 Maran Street tAl Check allow up tO 30 PO Boa 2212 days check clearance Westminster Ca 92693 CDDEsact CharKes 719 893 8311 Fidi Cash OnlyliAll UPS 7t9 8901203 AIRCRAFT OUALITV ALLEN SCREW SETS FOR ALL BRAND ENGINES Screw Sets come complete Allen Wrench available American metric sizes Write Call free price list RJL INDUSTRIES PO BOX 5654 PASADENA CA 91107 213 359-0016 795-9821 30 PACIFIC ACE complete kit includes printwood stripwood wheels rubber propeller real Japanese tissue Price $750 Plus $150 5&H SEAGLEN MODEL CO Box 123 Plympton Ma 02367
Edition: Model Aviation - 1983/07
Page Numbers: 67, 68, 69, 164
Meredith Lueken left displays Bill Hannans Moustique tray won Farman proxy-flown Pete Redhead Woodvale England Its CO-2-powered Right model photographed few days before shipment contest England its plywood shipping case documentation photo full-size prototype Small compartment lower left holds spare parts Hardwood dowels behind wing serve crush-resistant spacers box lid fastened screws Model returned safely after traveling 11000 miles won Flightmasters contest few days later Bill Hannan WHILE worlds politicians seem bent upon erecting barriers between nations few modelers quietly improving relations between distant peoples Some fortunate being able travel foreign lands participate person others exploring another avenue method Participating international model contests proxy friendships established satisfaction gained truly rewarding cost minimal Historically such contests have existed years 1923 Englands Lord Wakefield sponsored now-famous cup intended stimulate international model meets Among rules Models may flown proxy appointed entrant Provisions also made appointing experienced flier unable locate proxy themselves Proxy-flying model airplanes goes back first Wakefield Cup competition 1923 Perhaps earlier examples could found Modelers still finding low-cost way expanding horizons author provides some helpful hints getting involved foreign entry first year proxy-flown Dutch model fact event actually delayed pending its ar rival 1934 six American models proxy-flown Wakefield competition various other countries have repre sented manner through years Strangely way FAI recently dropped proxy-flying early NAA National Model Airplane Tournaments sponsored American Boy magazine also solicited mail-in entries todays better-known RC Scale mod elers Lou Proctor won 1929 though unable attend person reward An all-expense paid trip July 1983 67 Phil Cox constructed ligntweignt strong box shipping Waterman Racer Peanut California postal contest Warren Shipp photo Mike Coiling proxy-flew Peanut Scale model Walt Mooney England personally delivered prize print present rate inflation pound worth peanuts author examines Milan Kachas Zlin Peanut safely mailed California proxy contest way Czechoslovakia After sent England another event Peanut Scale Helicopter California atop first-place cup suc cessfully flown Charles Sotich Illinois Peanut Grand Prix West Baden IN Competition loot includes cup T-shirt razor-plane souvenir ball-point pen won unorthodox-plane class 68 Model Aviation / lettering Peanut model shipping container way en- uu--puwereu riurilirop NiM built Dan Walton Northrop couraging caution post office Author thinks Floridas Dr John Flying Wing Contest shipped wintry Kansas sunny Calif orMartin may have responsible rather novel idea nia symbolized its landing orange tree Eric Coates World Champs KU Scale luage prepares ny authors Peanut Farman Moustique Cardington England airship hangar Model hand-carried late Russ Barrera New Jersey Vic Wilson took overseas Eric Ron Moulton photograph Jim Hykas Peanut Hangar housed e well-traveled models shown Bill Hannans Fokker F2 entered Philadelphia Snoopys Doghouse outer box shown back- Museum contest via Harvey Lickstein city Benno Sabels Bleriot canard center mailed ground shipped Ohio California Germany participate California Indiana proxy contests Ray Malmstroms Avro Avis Model Builder proxy-flown contest bipe lower right flew California Proxy Peanut Contest after having shipped England Europe $200 cash $100 cup gold medal Leaping forward time 1966 find winner international Control Line Scale event held conjunction FAI Control Line World Championships American Warren Maczuras Grumman Gulfhawk proxy-flown England Stunt Judge Bob Gialdini precedents firmly established increasing travel costs proxy contests may just wave future Basically two distinct types proxy events models flown builders certain day within certain time frame written results mailed contest organizer scor ing Ed Whitten Model Aviation has con ducted such events Juniors Fly ing Aces Club has offered such categories years via FAC newsletter second type proxy contest involves actually mailing models specified location participation Perhaps great est quantity events during past 10 years has Peanut Scale surprising consider relative ease shipping tiny craft contrast larger models often require demountable parts oversize containers Regardless varieties types cluding ultra-fragile microfilm-covered models have successfully sent com petitions various parts world few guidelines presented may care share fun First foremost obtain copy contest rules far advance possible Regu lations differ widely vital under stand objectives before entering stance some Flying Scale rules encourage duration others seem concentrate improving scale accuracy workmanship Certain groups allow handlaunching models others specify rise-off-ground starts allow bonus points doing Next allow plenty time Constructing model specific contest always seems consume hours anticipated Alter natively may possible enter existing models Testing packing Continued page 164 July 1983 69 Walt Mooneys Found model Canadian prototype its all-balsa ping box Model secured floor rubberbands Note sturdy anti-crush blocks side model Roy Yates England releases FF Rubber Scale McDonald S21 sent Calitornia MA columnist Bill Warner Model won its class Woodvale 1980 Photo John ODonnell Oops example what shouldnt hap pen Fortunately Bob Peck California able repair Roger Aimes French Nieuport Racer time place Model Builder magazines proxy event held back Pete Branigan left holds Ichiro Yamadas model Russian Polikarpoy 117 send Woodvale contest England Japan right helper Ron Walker ODonnell photo performance certainly strengthens frontal area pan considerably California Racing under adverse condi tions just received photograph Cal ifornia showing Bob Kerr just turned new WAM record time 50001 using muffler-equipped Rat Racer Mufflers required WAM rules picture can sec muffler protruding out area mini-pipe usually exits addi tion can see racing circles over lap speed bump parking lot guess can say racing under ad verse conditions' comments suggestions al ways appreciated John C Ballard 10102 Kimblewick Dr Louisville KY 40223 CL Speed/Hempel Continued page 66 rately however propellers required particular assumed brake horsepower rpm speed thrust horsepower required standard sea level atmospheric conditions study summaries points out tiny changes diameter pitch affect power requirement speed course propellers must have true helical pitch least 30%-radius point blade tips pitch/diameter ratio should di minish towards hub two-blade pro pellers suffer high tip-speed efficiency-loss requires greater en gine power Ditto one-blader although studied specifically Three bladed props appear provide power required minimum brake horsepower arid tip-speed efficiency-loss Three-blade smoothness circular flight may also plus So study FAI CL Speed airplane warts hope might reveal something useful different per spective o new idea stranger competition class Id happy receive Proxy/Hannan Continued page 69 can also soak up hours almost alarming fashion Allow adequate time shipping too air mail delays can occur models have known miss contests little day account Additional hang ups have encountered via postal strikes over-zealous customs officers hap pily such incidents have infrequent Careful packing must models transported safely unrealistic ex pect Fragile Side Up notices much protecting delicate models Rather should strive bullet-proof con tainer withstand anticipated stresses Small suitcases metal boxes wooden boxes reinforced cardboard cartons have successfully employed Some builders prefer box-within-a-box con cept may help isolate contents outside pressure shocks Continued page 165 comments critique findings best regards Jerry Rautio 18 Highland Ct Fitchburg MA 01420 Well fellow Speed fliers what think can write Jerry directly course Id like know what com ments too Remember Jerrys work based directly proven full-scale propeller-design science very difficult know what correction factors must applied model prac tices use very high rpms propblade airfoils almost microscopic com pared full-scale ones brings kinds air-property effects scaleinduced effects picture Yet various coefficients efficiency correc tion factors still exist us though may different imagined Jerrys investigation Its place start Gene Hempel 301 N Yale Dr. Garland TX 75042 Table 2 ENGINE/PROPELLER SuMMARIEs FOR CLEAN AIRPLANE THP 165 nel No BIadm 3 2 liochosi PlO BI-IP RPM MPH 6169c5667 918 19 39000 165 6895 58658902135000165 THP0 ToTCp 5971135257944980916 9401134257 745770390 FOR CLEAR AIRPLANE THP 170 mph 362 70 5834930 21 35000170 27045 6008852 237 35000170 8991238273047260913 5211236272649670286 FOR AvERAGE AIRPLANE THPr 165 mph 36301 5699904 21 39000165 27081 5801818 239 35000165 9861230279548150928 5151230279550690395 Propulsive efficiency maw elm airspeed THP0 Thesat HP available maw elm aiesoeod Ta Thrast lb available may dee airapead Ta ic thraso Est V 0 C0 Power CanffieientBHP 590 P an3 CT fivieet tftraat P 00239 tao-leeel nRPM/6Q 0Ojam. Pt KTipSpeecl Carrection Poelor 164 Model Aviation HOt*iy H am Wieg Span -789 9mg Area 550 Sq SENSOAR glider HOBBY HORN Eaclasivel HOBBY HORN Kit SENSOAR Glider kit high qaality kit Machine catsanded parts Select quality balsa spruce Detailed plans written restructrons Far THERMAL yr SLOPE yr 115 ELECTRIC POWER VALUE PRICED a1 51600 OLLI TItR ICflS butt Partial Ktts P & W Semi-Kilt Cacibined seilh full atripeOOd plan Nose bscl Wire Windose etc Mat Ncles may purchased Just semi kits sr seith plans- serite sr call prices i93f Baceaneerf4$Si 1936 Cilpiser MR i-72-$39 1937 Dollaire SptaertS5$ft 1940 Ravger-40 $27 1939 Mercury72$Sf 1935 MIss Ametitaf4559 1941 Playboy Jr-54-$29 1941 Playbsy Sr-fO$46 iS3f Power Hsasef4--$43 1940 Sailpiane-7f-- $74 1940 So Long-St$2f 1939 Trentsn Terror-72-$32 i939 ZipperS4--$49 i925 Ksrda Wokelield-44 $17 MIDtflAP MODEL CO Sems-kttS Combined u/strip 11311 Flying Qaaker-f4-$49 1937 Qualcer Flssh-07535 1937 Long Cabin79$42 1937 Air Cbieffl$40 STRUCKS 1940 79 Span 935 Sq uiOW ruler SEMI KIT Plan inclj $3300 Combo Pull Kit 56300 SCALE PLANS ond DRAWINGS SSO HEINKEL HEiSSO 02 SOs $1000 SHiPPINO AND HANDLiNO sge TALOGUE Up $900 sdd $150 $290 PP/lsl Class $501 $2990 add $225 copy mill sent $2001 $4509 add $300 free--when requested$45 01 $7009 add $350 order aver $7000 add $400 HOBBY HORN CA Addressees add 6% tax vahobby specialliesac Send 510 visa/MC#Eap 15173 Maran Street tAl Check allow up tO 30 PO Boa 2212 days check clearance Westminster Ca 92693 CDDEsact CharKes 719 893 8311 Fidi Cash OnlyliAll UPS 7t9 8901203 AIRCRAFT OUALITV ALLEN SCREW SETS FOR ALL BRAND ENGINES Screw Sets come complete Allen Wrench available American metric sizes Write Call free price list RJL INDUSTRIES PO BOX 5654 PASADENA CA 91107 213 359-0016 795-9821 30 PACIFIC ACE complete kit includes printwood stripwood wheels rubber propeller real Japanese tissue Price $750 Plus $150 5&H SEAGLEN MODEL CO Box 123 Plympton Ma 02367
Edition: Model Aviation - 1983/07
Page Numbers: 67, 68, 69, 164
Meredith Lueken left displays Bill Hannans Moustique tray won Farman proxy-flown Pete Redhead Woodvale England Its CO-2-powered Right model photographed few days before shipment contest England its plywood shipping case documentation photo full-size prototype Small compartment lower left holds spare parts Hardwood dowels behind wing serve crush-resistant spacers box lid fastened screws Model returned safely after traveling 11000 miles won Flightmasters contest few days later Bill Hannan WHILE worlds politicians seem bent upon erecting barriers between nations few modelers quietly improving relations between distant peoples Some fortunate being able travel foreign lands participate person others exploring another avenue method Participating international model contests proxy friendships established satisfaction gained truly rewarding cost minimal Historically such contests have existed years 1923 Englands Lord Wakefield sponsored now-famous cup intended stimulate international model meets Among rules Models may flown proxy appointed entrant Provisions also made appointing experienced flier unable locate proxy themselves Proxy-flying model airplanes goes back first Wakefield Cup competition 1923 Perhaps earlier examples could found Modelers still finding low-cost way expanding horizons author provides some helpful hints getting involved foreign entry first year proxy-flown Dutch model fact event actually delayed pending its ar rival 1934 six American models proxy-flown Wakefield competition various other countries have repre sented manner through years Strangely way FAI recently dropped proxy-flying early NAA National Model Airplane Tournaments sponsored American Boy magazine also solicited mail-in entries todays better-known RC Scale mod elers Lou Proctor won 1929 though unable attend person reward An all-expense paid trip July 1983 67 Phil Cox constructed ligntweignt strong box shipping Waterman Racer Peanut California postal contest Warren Shipp photo Mike Coiling proxy-flew Peanut Scale model Walt Mooney England personally delivered prize print present rate inflation pound worth peanuts author examines Milan Kachas Zlin Peanut safely mailed California proxy contest way Czechoslovakia After sent England another event Peanut Scale Helicopter California atop first-place cup suc cessfully flown Charles Sotich Illinois Peanut Grand Prix West Baden IN Competition loot includes cup T-shirt razor-plane souvenir ball-point pen won unorthodox-plane class 68 Model Aviation / lettering Peanut model shipping container way en- uu--puwereu riurilirop NiM built Dan Walton Northrop couraging caution post office Author thinks Floridas Dr John Flying Wing Contest shipped wintry Kansas sunny Calif orMartin may have responsible rather novel idea nia symbolized its landing orange tree Eric Coates World Champs KU Scale luage prepares ny authors Peanut Farman Moustique Cardington England airship hangar Model hand-carried late Russ Barrera New Jersey Vic Wilson took overseas Eric Ron Moulton photograph Jim Hykas Peanut Hangar housed e well-traveled models shown Bill Hannans Fokker F2 entered Philadelphia Snoopys Doghouse outer box shown back- Museum contest via Harvey Lickstein city Benno Sabels Bleriot canard center mailed ground shipped Ohio California Germany participate California Indiana proxy contests Ray Malmstroms Avro Avis Model Builder proxy-flown contest bipe lower right flew California Proxy Peanut Contest after having shipped England Europe $200 cash $100 cup gold medal Leaping forward time 1966 find winner international Control Line Scale event held conjunction FAI Control Line World Championships American Warren Maczuras Grumman Gulfhawk proxy-flown England Stunt Judge Bob Gialdini precedents firmly established increasing travel costs proxy contests may just wave future Basically two distinct types proxy events models flown builders certain day within certain time frame written results mailed contest organizer scor ing Ed Whitten Model Aviation has con ducted such events Juniors Fly ing Aces Club has offered such categories years via FAC newsletter second type proxy contest involves actually mailing models specified location participation Perhaps great est quantity events during past 10 years has Peanut Scale surprising consider relative ease shipping tiny craft contrast larger models often require demountable parts oversize containers Regardless varieties types cluding ultra-fragile microfilm-covered models have successfully sent com petitions various parts world few guidelines presented may care share fun First foremost obtain copy contest rules far advance possible Regu lations differ widely vital under stand objectives before entering stance some Flying Scale rules encourage duration others seem concentrate improving scale accuracy workmanship Certain groups allow handlaunching models others specify rise-off-ground starts allow bonus points doing Next allow plenty time Constructing model specific contest always seems consume hours anticipated Alter natively may possible enter existing models Testing packing Continued page 164 July 1983 69 Walt Mooneys Found model Canadian prototype its all-balsa ping box Model secured floor rubberbands Note sturdy anti-crush blocks side model Roy Yates England releases FF Rubber Scale McDonald S21 sent Calitornia MA columnist Bill Warner Model won its class Woodvale 1980 Photo John ODonnell Oops example what shouldnt hap pen Fortunately Bob Peck California able repair Roger Aimes French Nieuport Racer time place Model Builder magazines proxy event held back Pete Branigan left holds Ichiro Yamadas model Russian Polikarpoy 117 send Woodvale contest England Japan right helper Ron Walker ODonnell photo performance certainly strengthens frontal area pan considerably California Racing under adverse condi tions just received photograph Cal ifornia showing Bob Kerr just turned new WAM record time 50001 using muffler-equipped Rat Racer Mufflers required WAM rules picture can sec muffler protruding out area mini-pipe usually exits addi tion can see racing circles over lap speed bump parking lot guess can say racing under ad verse conditions' comments suggestions al ways appreciated John C Ballard 10102 Kimblewick Dr Louisville KY 40223 CL Speed/Hempel Continued page 66 rately however propellers required particular assumed brake horsepower rpm speed thrust horsepower required standard sea level atmospheric conditions study summaries points out tiny changes diameter pitch affect power requirement speed course propellers must have true helical pitch least 30%-radius point blade tips pitch/diameter ratio should di minish towards hub two-blade pro pellers suffer high tip-speed efficiency-loss requires greater en gine power Ditto one-blader although studied specifically Three bladed props appear provide power required minimum brake horsepower arid tip-speed efficiency-loss Three-blade smoothness circular flight may also plus So study FAI CL Speed airplane warts hope might reveal something useful different per spective o new idea stranger competition class Id happy receive Proxy/Hannan Continued page 69 can also soak up hours almost alarming fashion Allow adequate time shipping too air mail delays can occur models have known miss contests little day account Additional hang ups have encountered via postal strikes over-zealous customs officers hap pily such incidents have infrequent Careful packing must models transported safely unrealistic ex pect Fragile Side Up notices much protecting delicate models Rather should strive bullet-proof con tainer withstand anticipated stresses Small suitcases metal boxes wooden boxes reinforced cardboard cartons have successfully employed Some builders prefer box-within-a-box con cept may help isolate contents outside pressure shocks Continued page 165 comments critique findings best regards Jerry Rautio 18 Highland Ct Fitchburg MA 01420 Well fellow Speed fliers what think can write Jerry directly course Id like know what com ments too Remember Jerrys work based directly proven full-scale propeller-design science very difficult know what correction factors must applied model prac tices use very high rpms propblade airfoils almost microscopic com pared full-scale ones brings kinds air-property effects scaleinduced effects picture Yet various coefficients efficiency correc tion factors still exist us though may different imagined Jerrys investigation Its place start Gene Hempel 301 N Yale Dr. Garland TX 75042 Table 2 ENGINE/PROPELLER SuMMARIEs FOR CLEAN AIRPLANE THP 165 nel No BIadm 3 2 liochosi PlO BI-IP RPM MPH 6169c5667 918 19 39000 165 6895 58658902135000165 THP0 ToTCp 5971135257944980916 9401134257 745770390 FOR CLEAR AIRPLANE THP 170 mph 362 70 5834930 21 35000170 27045 6008852 237 35000170 8991238273047260913 5211236272649670286 FOR AvERAGE AIRPLANE THPr 165 mph 36301 5699904 21 39000165 27081 5801818 239 35000165 9861230279548150928 5151230279550690395 Propulsive efficiency maw elm airspeed THP0 Thesat HP available maw elm aiesoeod Ta Thrast lb available may dee airapead Ta ic thraso Est V 0 C0 Power CanffieientBHP 590 P an3 CT fivieet tftraat P 00239 tao-leeel nRPM/6Q 0Ojam. Pt KTipSpeecl Carrection Poelor 164 Model Aviation HOt*iy H am Wieg Span -789 9mg Area 550 Sq SENSOAR glider HOBBY HORN Eaclasivel HOBBY HORN Kit SENSOAR Glider kit high qaality kit Machine catsanded parts Select quality balsa spruce Detailed plans written restructrons Far THERMAL yr SLOPE yr 115 ELECTRIC POWER VALUE PRICED a1 51600 OLLI TItR ICflS butt Partial Ktts P & W Semi-Kilt Cacibined seilh full atripeOOd plan Nose bscl Wire Windose etc Mat Ncles may purchased Just semi kits sr seith plans- serite sr call prices i93f Baceaneerf4$Si 1936 Cilpiser MR i-72-$39 1937 Dollaire SptaertS5$ft 1940 Ravger-40 $27 1939 Mercury72$Sf 1935 MIss Ametitaf4559 1941 Playboy Jr-54-$29 1941 Playbsy Sr-fO$46 iS3f Power Hsasef4--$43 1940 Sailpiane-7f-- $74 1940 So Long-St$2f 1939 Trentsn Terror-72-$32 i939 ZipperS4--$49 i925 Ksrda Wokelield-44 $17 MIDtflAP MODEL CO Sems-kttS Combined u/strip 11311 Flying Qaaker-f4-$49 1937 Qualcer Flssh-07535 1937 Long Cabin79$42 1937 Air Cbieffl$40 STRUCKS 1940 79 Span 935 Sq uiOW ruler SEMI KIT Plan inclj $3300 Combo Pull Kit 56300 SCALE PLANS ond DRAWINGS SSO HEINKEL HEiSSO 02 SOs $1000 SHiPPINO AND HANDLiNO sge TALOGUE Up $900 sdd $150 $290 PP/lsl Class $501 $2990 add $225 copy mill sent $2001 $4509 add $300 free--when requested$45 01 $7009 add $350 order aver $7000 add $400 HOBBY HORN CA Addressees add 6% tax vahobby specialliesac Send 510 visa/MC#Eap 15173 Maran Street tAl Check allow up tO 30 PO Boa 2212 days check clearance Westminster Ca 92693 CDDEsact CharKes 719 893 8311 Fidi Cash OnlyliAll UPS 7t9 8901203 AIRCRAFT OUALITV ALLEN SCREW SETS FOR ALL BRAND ENGINES Screw Sets come complete Allen Wrench available American metric sizes Write Call free price list RJL INDUSTRIES PO BOX 5654 PASADENA CA 91107 213 359-0016 795-9821 30 PACIFIC ACE complete kit includes printwood stripwood wheels rubber propeller real Japanese tissue Price $750 Plus $150 5&H SEAGLEN MODEL CO Box 123 Plympton Ma 02367