X0 0 S 0 S-z00 000 Ci 0 2 o 2- 0 00 C x 0 0 o 0 0 C C 0 Zo 00 0 - 07 00 0 000 0 - 0 0 0 0 0 00 7 N C 00 2 000 0- 0 0000 0-- 00 0 0 - 00 0 0 0 0 - 0 I2~- 0 ~ 0 0 - 02 TI 00000-10 b 0 0-0 -TI - 0 0qo 0- o 0000~00 C0~ 0- -000" 0 t3k3t404 00 4 00 kM 0 000-400 OM kM kM 00000 0 00 Ok kM kM 0-0 fl0 0 TI- 00 0 I0 00 U 03 0 004000kMkM00kM00 kMkM00kMOkMkM kM00 0400 00th -O40 0AkM000004000A0A0400 00 000t-00tO0kM00 ZZoZrnoo o to0o40 0000000 kM 00 00C 0tM00 kM0 -S0000tA0A0O00 0kMAOt4t0Ot000 0 ~OkMO0kM0 kMkM U O Ot 0000000OOkMOO h00 00 000000000004kMkM kM kM kM kM 404iouotOkMt- 0W00O000th 04 000000 00O00000kM00 00kMkMkM 0000W kM -u CA 0 NH] 5 CA 2 _ 0 CA CA CA 7-s 0 CA CA CA ft0l0 CAto Cflft 0 ft ft CA ato ft CA 0 CA A 00 00 00 0 CA C 0 CA CA 7 CA0 ftCA 0 CA CA0 CA A.CA ft CA 9 0 CA 0 A ft 0 0 02CA o 77 1 7- 5CA CA 0 7 CA CA U 0 CA I-a ~03 oo -u 0 0 ci am __5 m CACA a CO CA toCA K CA 2 CC 0 WO 7-s7CA e C CA -U Ko to CA liCA K7 0 m CA 7 W0 0 CA 2 t CA o CA .CA CAm CA CA CAI 00- 2 i 70 i -CA CA CA CA A 7 CA 0 ft0 C CA -to C CA ft CA CA-s cli 0 - CAj ftCA ft A 7 CA CA CA ui 0 I~~0\ jf 4-2- fully normal Pro-head flybarless system will have make ex cuses should consider what said pre view Legend some details may change before production begins However flew three prototypes am very impressed machines perform ance flexibility As expected come stock kit Legend nine-pound 60-class belt-driven tail flybarless rotor aerobatic rocket ship cause commonalties other GMP ma chines could add other GMP heads 1 1/2-in-longer belt-drive tail stan dard GMP shaft-drive tail could up date Competitor Cobra already own can literally style Legend suit current desires aerobatics Scale FAI competition Pick tail head suit task GMP also working new rotor head us ing proven dampening systembut mid-position underslung flybar way John Gorham works wont take long him fin ish Legend package various acces sories dedicated GMP expects early sum mer release sounds realistic Stay touch GMP dealer further updates So whats new department have apologize readers manufacturers have sent letters and/or products testing have extremely busy last six monthsboth daytime job McDonnell Douglas LIMP am process finishing third three consecutive movies last few months Ive built three fuselage plugs seven Helicoptersnone personal machines though Im doing lot flying havent done Please patient can see day light again really have urge finish up current projects some serious fun fly ing Now spring turning summer Ill bet lot afternoon-evening sport flying go ing over country Boy sure look ward joining fun BCNU Larry Canard Stability/Hunt Continued page 56 No matter what little tricks have preventing canard stalling will always stall before wing because its much smaller size air likes big surfaces run over better small onesReynolds effect Rule #2 Larger elevators canard small deflections better small elevators large deflections probably know also works eleva tors aft-tail aircraft control sur face model airplane Rule #3 Wings should have blunt leading edges and/or sufficient twist washout prevent tips stalling Rule #4 canard large span may wish washout canard tips well wing tips help prevent pre mature stall Rule #5 Get used idea flying airplane looks like its going reverse 100 mph biggest complaints airplane educated spectators can never tell way airplane going Perception problems will crash airplane faster design flaws Rule #6 Seal control surface gaps canard increase effectiveness Suggestion #1 using fixed ca nard trailing edge elevator consider using leading edge droop device pre vent premature canard stall see Fig 4 Suggestion #2 after fussing fighting canard design youre happy stability level still cant get turn tight loop small enough give some thought using thrust vectoring assist canard pitch con trol see Fig 5 very few canard kits mar ket choose event youd like run out buy avail able unfortunately have no personal expe rience have refining jet-look canardtype aircraft better six years have much success fly very well can made very stable modified easily very aerobatic stronghearted pilot short discussion hope have given awareness some com plexities involved making canard air plane flyand intrigued enough will investigate Wonderful World Backwards Flight [When responding advertisers mention read about ModelAviation ment first thing apparent No maxed out Korda places sixth Robert Copland Eng land wins nine three-minute maxes made during entire contest assume Category III rules twominute maxes situation changes little Copland still wins max-out Korda fifth oniy 21 maxes made Zaic flying proxy Vincre France fails tie Copland second Now mean no disrespect Mr Korda other participant contest believe present Old-Timer Rubber fliers flying under current rules would score maxes did 1939 using same designs Ev idence such rash statement will found report 1986 SAM Society Antique ModelersEd Champs appeared October 1986 issue magazine meet Rubber Cabin flown two-minute maxes maxing out being allowed flyoff flight Five maxed out using OldTimer Wakefields three being 1939 Kordas 1936 design weather super-good day either would like share thoughts just fliers today get higher performance worlds best did 1939 designs have changed enforce weight rule judgement few underweight models result think fact total weight of todays Old-Timer Rubber models much different byContinued page 149 July1988 145 FF Old-Timers/Baker Continued page 57 FF Old-Timers/Baker Continued page 145 gone days have weight structures less rubber old practice build very light struc tures bring model up required weight rubber resulted some terrify ing hunks rubber being held precariously very flimsy structures Well rubberto-structural-weight didnt get higher average flight times answer use less rubber use well Several fliers era have com mented winders would wind big motors fully binding since did use winding tubes seldom really attempted pack maximum winds models very likely trimmed much power anyway long heavy motors led models inertia problems pitch trim frequent problems center-of-gravity being shifted aft thereby spoil ing glide due gobs knots collecting rear end never seems collect anywhere elsejust dropped bread-and-jelly sandwich always seems land jelly-side down Bakers rules derived Parkinsons Law use winders good bearings gears permit winding maximum turns ease also use blast tubes torque meters encourage winding maximum suspect have better rubber likely have good sense test rubber use best have official flights saving rest loan friends likely much aware thermalpickingand itthan day addition models likely better trim because last much longer few lost because short max universal use dethermalizers Because models flown string maxes big expected last longer built better stronger back original point better trim Chester Lanzo once told built 13 14 popular 1940 National Stick Win ner airplanes year e lost contest have version model have flying since 1979 have used win contests including SAM Champs twice 1980 1986 sucker starting get good trim same principle applies Gas models too An out-of-sight flight needed winand should never happen failure dether malizer except Oklahoma whole houses towns go flying Out sight time time art building Old-Timer today making stronger original going too heavy Like Terry Rimerts three rules Free Flight Keep light dont let get heavy shouldnt weigh much Major areas likely need strength spars leading edges longerons landing gears mo tor mounts Eut Tileson expert creating light-but-strong structures points out trailing edges usually too heavy go through fence last anyway says need input dont know can expect future columns go detail about structural changes trim schemes other good stuff like pick design build now know some changes orig inal plans may desirable thing about Gas models would suggest right away never build beam mounts need good trim able make small thrust line adjustments easily make engine mounts bolt firewall cant adjust thrust line will very limited amount power model can handle will have too much rudder deflection high power still wont have enough turn glide ex ample have made couple errors past columns Micro Model Engineering catalog $5 now price 52-in-span SAM-legal-for FF version Strato Streak $585 postpald Bob Larsh 45 5 Whitcomb Ave Indianap olis IN 46241 Thermals Viva Dos Equis FF Sport & Scale/Warner Continued page 59 have receiving letters commenting kids coming hobby droves Id like share couple Reynard McClusky DelMar NY member famed Mid-Hudson Model Masters fig ures reason kids gravitate RC cars can get places run em flying fields require adults transportation adults always available also opinion schools push clubs team sports social events have nothing working ones hands mething too often looked down upon upwardiy mobile soci ety suspects countries model building still flourishes since work ing hands highly regarded cites kids flying stick-and-tissue models off hill Innsbruck Austria last visit John Walker Charlottesville VA notes area has comprehensive model magazine stands years whereas Thirties kid access model mag azines simple models could build right-then-and-there didnt use much balsaand also flew well could buy models almost anywhere days fiveand-dime stores sporting goods stores big department store continuous modelbuilding demonstration likes has seen Japan late Harry Ohanesian Grand Rapids MI figures part problem beginner gen erally chooses Scale model usually hardest trim fly Kids dont see neat sim ple models putting along overhead anymore Harry would like see kids introduced simple endurance models spanning 20 30 easier build trim some smaller ones Doug Dahike Oshkosh WI opines reasons given lack Juniors hobby ridiculous response old Kids interested cutting edge technology argument wonders model rocketry isnt hip-deep kids skateboards cut ting edge also figures 10 Jun iors stays hobby thats good accom plishment also wonders about adult priori ties money spent frequency control rather Junior programs Perhaps Junior problem bit like weather erybody talks about no body does anything about Maybe could get AMA AARP merge get break dues Geritol same time AA Lidberg Model Plan Service 614 E FordJuly1988 149 izu N CD CO 0 31 x ps 0 x N C Co Co -n I m z 0 z z 0 ci 0 -u JJ 0 -u m I m 0 0 C3 -I CD CD 0 0 C, 0 C, 0 0 01 0
Edition: Model Aviation - 1988/07
Page Numbers: 57, 145, 149
X0 0 S 0 S-z00 000 Ci 0 2 o 2- 0 00 C x 0 0 o 0 0 C C 0 Zo 00 0 - 07 00 0 000 0 - 0 0 0 0 0 00 7 N C 00 2 000 0- 0 0000 0-- 00 0 0 - 00 0 0 0 0 - 0 I2~- 0 ~ 0 0 - 02 TI 00000-10 b 0 0-0 -TI - 0 0qo 0- o 0000~00 C0~ 0- -000" 0 t3k3t404 00 4 00 kM 0 000-400 OM kM kM 00000 0 00 Ok kM kM 0-0 fl0 0 TI- 00 0 I0 00 U 03 0 004000kMkM00kM00 kMkM00kMOkMkM kM00 0400 00th -O40 0AkM000004000A0A0400 00 000t-00tO0kM00 ZZoZrnoo o to0o40 0000000 kM 00 00C 0tM00 kM0 -S0000tA0A0O00 0kMAOt4t0Ot000 0 ~OkMO0kM0 kMkM U O Ot 0000000OOkMOO h00 00 000000000004kMkM kM kM kM kM 404iouotOkMt- 0W00O000th 04 000000 00O00000kM00 00kMkMkM 0000W kM -u CA 0 NH] 5 CA 2 _ 0 CA CA CA 7-s 0 CA CA CA ft0l0 CAto Cflft 0 ft ft CA ato ft CA 0 CA A 00 00 00 0 CA C 0 CA CA 7 CA0 ftCA 0 CA CA0 CA A.CA ft CA 9 0 CA 0 A ft 0 0 02CA o 77 1 7- 5CA CA 0 7 CA CA U 0 CA I-a ~03 oo -u 0 0 ci am __5 m CACA a CO CA toCA K CA 2 CC 0 WO 7-s7CA e C CA -U Ko to CA liCA K7 0 m CA 7 W0 0 CA 2 t CA o CA .CA CAm CA CA CAI 00- 2 i 70 i -CA CA CA CA A 7 CA 0 ft0 C CA -to C CA ft CA CA-s cli 0 - CAj ftCA ft A 7 CA CA CA ui 0 I~~0\ jf 4-2- fully normal Pro-head flybarless system will have make ex cuses should consider what said pre view Legend some details may change before production begins However flew three prototypes am very impressed machines perform ance flexibility As expected come stock kit Legend nine-pound 60-class belt-driven tail flybarless rotor aerobatic rocket ship cause commonalties other GMP ma chines could add other GMP heads 1 1/2-in-longer belt-drive tail stan dard GMP shaft-drive tail could up date Competitor Cobra already own can literally style Legend suit current desires aerobatics Scale FAI competition Pick tail head suit task GMP also working new rotor head us ing proven dampening systembut mid-position underslung flybar way John Gorham works wont take long him fin ish Legend package various acces sories dedicated GMP expects early sum mer release sounds realistic Stay touch GMP dealer further updates So whats new department have apologize readers manufacturers have sent letters and/or products testing have extremely busy last six monthsboth daytime job McDonnell Douglas LIMP am process finishing third three consecutive movies last few months Ive built three fuselage plugs seven Helicoptersnone personal machines though Im doing lot flying havent done Please patient can see day light again really have urge finish up current projects some serious fun fly ing Now spring turning summer Ill bet lot afternoon-evening sport flying go ing over country Boy sure look ward joining fun BCNU Larry Canard Stability/Hunt Continued page 56 No matter what little tricks have preventing canard stalling will always stall before wing because its much smaller size air likes big surfaces run over better small onesReynolds effect Rule #2 Larger elevators canard small deflections better small elevators large deflections probably know also works eleva tors aft-tail aircraft control sur face model airplane Rule #3 Wings should have blunt leading edges and/or sufficient twist washout prevent tips stalling Rule #4 canard large span may wish washout canard tips well wing tips help prevent pre mature stall Rule #5 Get used idea flying airplane looks like its going reverse 100 mph biggest complaints airplane educated spectators can never tell way airplane going Perception problems will crash airplane faster design flaws Rule #6 Seal control surface gaps canard increase effectiveness Suggestion #1 using fixed ca nard trailing edge elevator consider using leading edge droop device pre vent premature canard stall see Fig 4 Suggestion #2 after fussing fighting canard design youre happy stability level still cant get turn tight loop small enough give some thought using thrust vectoring assist canard pitch con trol see Fig 5 very few canard kits mar ket choose event youd like run out buy avail able unfortunately have no personal expe rience have refining jet-look canardtype aircraft better six years have much success fly very well can made very stable modified easily very aerobatic stronghearted pilot short discussion hope have given awareness some com plexities involved making canard air plane flyand intrigued enough will investigate Wonderful World Backwards Flight [When responding advertisers mention read about ModelAviation ment first thing apparent No maxed out Korda places sixth Robert Copland Eng land wins nine three-minute maxes made during entire contest assume Category III rules twominute maxes situation changes little Copland still wins max-out Korda fifth oniy 21 maxes made Zaic flying proxy Vincre France fails tie Copland second Now mean no disrespect Mr Korda other participant contest believe present Old-Timer Rubber fliers flying under current rules would score maxes did 1939 using same designs Ev idence such rash statement will found report 1986 SAM Society Antique ModelersEd Champs appeared October 1986 issue magazine meet Rubber Cabin flown two-minute maxes maxing out being allowed flyoff flight Five maxed out using OldTimer Wakefields three being 1939 Kordas 1936 design weather super-good day either would like share thoughts just fliers today get higher performance worlds best did 1939 designs have changed enforce weight rule judgement few underweight models result think fact total weight of todays Old-Timer Rubber models much different byContinued page 149 July1988 145 FF Old-Timers/Baker Continued page 57 FF Old-Timers/Baker Continued page 145 gone days have weight structures less rubber old practice build very light struc tures bring model up required weight rubber resulted some terrify ing hunks rubber being held precariously very flimsy structures Well rubberto-structural-weight didnt get higher average flight times answer use less rubber use well Several fliers era have com mented winders would wind big motors fully binding since did use winding tubes seldom really attempted pack maximum winds models very likely trimmed much power anyway long heavy motors led models inertia problems pitch trim frequent problems center-of-gravity being shifted aft thereby spoil ing glide due gobs knots collecting rear end never seems collect anywhere elsejust dropped bread-and-jelly sandwich always seems land jelly-side down Bakers rules derived Parkinsons Law use winders good bearings gears permit winding maximum turns ease also use blast tubes torque meters encourage winding maximum suspect have better rubber likely have good sense test rubber use best have official flights saving rest loan friends likely much aware thermalpickingand itthan day addition models likely better trim because last much longer few lost because short max universal use dethermalizers Because models flown string maxes big expected last longer built better stronger back original point better trim Chester Lanzo once told built 13 14 popular 1940 National Stick Win ner airplanes year e lost contest have version model have flying since 1979 have used win contests including SAM Champs twice 1980 1986 sucker starting get good trim same principle applies Gas models too An out-of-sight flight needed winand should never happen failure dether malizer except Oklahoma whole houses towns go flying Out sight time time art building Old-Timer today making stronger original going too heavy Like Terry Rimerts three rules Free Flight Keep light dont let get heavy shouldnt weigh much Major areas likely need strength spars leading edges longerons landing gears mo tor mounts Eut Tileson expert creating light-but-strong structures points out trailing edges usually too heavy go through fence last anyway says need input dont know can expect future columns go detail about structural changes trim schemes other good stuff like pick design build now know some changes orig inal plans may desirable thing about Gas models would suggest right away never build beam mounts need good trim able make small thrust line adjustments easily make engine mounts bolt firewall cant adjust thrust line will very limited amount power model can handle will have too much rudder deflection high power still wont have enough turn glide ex ample have made couple errors past columns Micro Model Engineering catalog $5 now price 52-in-span SAM-legal-for FF version Strato Streak $585 postpald Bob Larsh 45 5 Whitcomb Ave Indianap olis IN 46241 Thermals Viva Dos Equis FF Sport & Scale/Warner Continued page 59 have receiving letters commenting kids coming hobby droves Id like share couple Reynard McClusky DelMar NY member famed Mid-Hudson Model Masters fig ures reason kids gravitate RC cars can get places run em flying fields require adults transportation adults always available also opinion schools push clubs team sports social events have nothing working ones hands mething too often looked down upon upwardiy mobile soci ety suspects countries model building still flourishes since work ing hands highly regarded cites kids flying stick-and-tissue models off hill Innsbruck Austria last visit John Walker Charlottesville VA notes area has comprehensive model magazine stands years whereas Thirties kid access model mag azines simple models could build right-then-and-there didnt use much balsaand also flew well could buy models almost anywhere days fiveand-dime stores sporting goods stores big department store continuous modelbuilding demonstration likes has seen Japan late Harry Ohanesian Grand Rapids MI figures part problem beginner gen erally chooses Scale model usually hardest trim fly Kids dont see neat sim ple models putting along overhead anymore Harry would like see kids introduced simple endurance models spanning 20 30 easier build trim some smaller ones Doug Dahike Oshkosh WI opines reasons given lack Juniors hobby ridiculous response old Kids interested cutting edge technology argument wonders model rocketry isnt hip-deep kids skateboards cut ting edge also figures 10 Jun iors stays hobby thats good accom plishment also wonders about adult priori ties money spent frequency control rather Junior programs Perhaps Junior problem bit like weather erybody talks about no body does anything about Maybe could get AMA AARP merge get break dues Geritol same time AA Lidberg Model Plan Service 614 E FordJuly1988 149 izu N CD CO 0 31 x ps 0 x N C Co Co -n I m z 0 z z 0 ci 0 -u JJ 0 -u m I m 0 0 C3 -I CD CD 0 0 C, 0 C, 0 0 01 0
Edition: Model Aviation - 1988/07
Page Numbers: 57, 145, 149
X0 0 S 0 S-z00 000 Ci 0 2 o 2- 0 00 C x 0 0 o 0 0 C C 0 Zo 00 0 - 07 00 0 000 0 - 0 0 0 0 0 00 7 N C 00 2 000 0- 0 0000 0-- 00 0 0 - 00 0 0 0 0 - 0 I2~- 0 ~ 0 0 - 02 TI 00000-10 b 0 0-0 -TI - 0 0qo 0- o 0000~00 C0~ 0- -000" 0 t3k3t404 00 4 00 kM 0 000-400 OM kM kM 00000 0 00 Ok kM kM 0-0 fl0 0 TI- 00 0 I0 00 U 03 0 004000kMkM00kM00 kMkM00kMOkMkM kM00 0400 00th -O40 0AkM000004000A0A0400 00 000t-00tO0kM00 ZZoZrnoo o to0o40 0000000 kM 00 00C 0tM00 kM0 -S0000tA0A0O00 0kMAOt4t0Ot000 0 ~OkMO0kM0 kMkM U O Ot 0000000OOkMOO h00 00 000000000004kMkM kM kM kM kM 404iouotOkMt- 0W00O000th 04 000000 00O00000kM00 00kMkMkM 0000W kM -u CA 0 NH] 5 CA 2 _ 0 CA CA CA 7-s 0 CA CA CA ft0l0 CAto Cflft 0 ft ft CA ato ft CA 0 CA A 00 00 00 0 CA C 0 CA CA 7 CA0 ftCA 0 CA CA0 CA A.CA ft CA 9 0 CA 0 A ft 0 0 02CA o 77 1 7- 5CA CA 0 7 CA CA U 0 CA I-a ~03 oo -u 0 0 ci am __5 m CACA a CO CA toCA K CA 2 CC 0 WO 7-s7CA e C CA -U Ko to CA liCA K7 0 m CA 7 W0 0 CA 2 t CA o CA .CA CAm CA CA CAI 00- 2 i 70 i -CA CA CA CA A 7 CA 0 ft0 C CA -to C CA ft CA CA-s cli 0 - CAj ftCA ft A 7 CA CA CA ui 0 I~~0\ jf 4-2- fully normal Pro-head flybarless system will have make ex cuses should consider what said pre view Legend some details may change before production begins However flew three prototypes am very impressed machines perform ance flexibility As expected come stock kit Legend nine-pound 60-class belt-driven tail flybarless rotor aerobatic rocket ship cause commonalties other GMP ma chines could add other GMP heads 1 1/2-in-longer belt-drive tail stan dard GMP shaft-drive tail could up date Competitor Cobra already own can literally style Legend suit current desires aerobatics Scale FAI competition Pick tail head suit task GMP also working new rotor head us ing proven dampening systembut mid-position underslung flybar way John Gorham works wont take long him fin ish Legend package various acces sories dedicated GMP expects early sum mer release sounds realistic Stay touch GMP dealer further updates So whats new department have apologize readers manufacturers have sent letters and/or products testing have extremely busy last six monthsboth daytime job McDonnell Douglas LIMP am process finishing third three consecutive movies last few months Ive built three fuselage plugs seven Helicoptersnone personal machines though Im doing lot flying havent done Please patient can see day light again really have urge finish up current projects some serious fun fly ing Now spring turning summer Ill bet lot afternoon-evening sport flying go ing over country Boy sure look ward joining fun BCNU Larry Canard Stability/Hunt Continued page 56 No matter what little tricks have preventing canard stalling will always stall before wing because its much smaller size air likes big surfaces run over better small onesReynolds effect Rule #2 Larger elevators canard small deflections better small elevators large deflections probably know also works eleva tors aft-tail aircraft control sur face model airplane Rule #3 Wings should have blunt leading edges and/or sufficient twist washout prevent tips stalling Rule #4 canard large span may wish washout canard tips well wing tips help prevent pre mature stall Rule #5 Get used idea flying airplane looks like its going reverse 100 mph biggest complaints airplane educated spectators can never tell way airplane going Perception problems will crash airplane faster design flaws Rule #6 Seal control surface gaps canard increase effectiveness Suggestion #1 using fixed ca nard trailing edge elevator consider using leading edge droop device pre vent premature canard stall see Fig 4 Suggestion #2 after fussing fighting canard design youre happy stability level still cant get turn tight loop small enough give some thought using thrust vectoring assist canard pitch con trol see Fig 5 very few canard kits mar ket choose event youd like run out buy avail able unfortunately have no personal expe rience have refining jet-look canardtype aircraft better six years have much success fly very well can made very stable modified easily very aerobatic stronghearted pilot short discussion hope have given awareness some com plexities involved making canard air plane flyand intrigued enough will investigate Wonderful World Backwards Flight [When responding advertisers mention read about ModelAviation ment first thing apparent No maxed out Korda places sixth Robert Copland Eng land wins nine three-minute maxes made during entire contest assume Category III rules twominute maxes situation changes little Copland still wins max-out Korda fifth oniy 21 maxes made Zaic flying proxy Vincre France fails tie Copland second Now mean no disrespect Mr Korda other participant contest believe present Old-Timer Rubber fliers flying under current rules would score maxes did 1939 using same designs Ev idence such rash statement will found report 1986 SAM Society Antique ModelersEd Champs appeared October 1986 issue magazine meet Rubber Cabin flown two-minute maxes maxing out being allowed flyoff flight Five maxed out using OldTimer Wakefields three being 1939 Kordas 1936 design weather super-good day either would like share thoughts just fliers today get higher performance worlds best did 1939 designs have changed enforce weight rule judgement few underweight models result think fact total weight of todays Old-Timer Rubber models much different byContinued page 149 July1988 145 FF Old-Timers/Baker Continued page 57 FF Old-Timers/Baker Continued page 145 gone days have weight structures less rubber old practice build very light struc tures bring model up required weight rubber resulted some terrify ing hunks rubber being held precariously very flimsy structures Well rubberto-structural-weight didnt get higher average flight times answer use less rubber use well Several fliers era have com mented winders would wind big motors fully binding since did use winding tubes seldom really attempted pack maximum winds models very likely trimmed much power anyway long heavy motors led models inertia problems pitch trim frequent problems center-of-gravity being shifted aft thereby spoil ing glide due gobs knots collecting rear end never seems collect anywhere elsejust dropped bread-and-jelly sandwich always seems land jelly-side down Bakers rules derived Parkinsons Law use winders good bearings gears permit winding maximum turns ease also use blast tubes torque meters encourage winding maximum suspect have better rubber likely have good sense test rubber use best have official flights saving rest loan friends likely much aware thermalpickingand itthan day addition models likely better trim because last much longer few lost because short max universal use dethermalizers Because models flown string maxes big expected last longer built better stronger back original point better trim Chester Lanzo once told built 13 14 popular 1940 National Stick Win ner airplanes year e lost contest have version model have flying since 1979 have used win contests including SAM Champs twice 1980 1986 sucker starting get good trim same principle applies Gas models too An out-of-sight flight needed winand should never happen failure dether malizer except Oklahoma whole houses towns go flying Out sight time time art building Old-Timer today making stronger original going too heavy Like Terry Rimerts three rules Free Flight Keep light dont let get heavy shouldnt weigh much Major areas likely need strength spars leading edges longerons landing gears mo tor mounts Eut Tileson expert creating light-but-strong structures points out trailing edges usually too heavy go through fence last anyway says need input dont know can expect future columns go detail about structural changes trim schemes other good stuff like pick design build now know some changes orig inal plans may desirable thing about Gas models would suggest right away never build beam mounts need good trim able make small thrust line adjustments easily make engine mounts bolt firewall cant adjust thrust line will very limited amount power model can handle will have too much rudder deflection high power still wont have enough turn glide ex ample have made couple errors past columns Micro Model Engineering catalog $5 now price 52-in-span SAM-legal-for FF version Strato Streak $585 postpald Bob Larsh 45 5 Whitcomb Ave Indianap olis IN 46241 Thermals Viva Dos Equis FF Sport & Scale/Warner Continued page 59 have receiving letters commenting kids coming hobby droves Id like share couple Reynard McClusky DelMar NY member famed Mid-Hudson Model Masters fig ures reason kids gravitate RC cars can get places run em flying fields require adults transportation adults always available also opinion schools push clubs team sports social events have nothing working ones hands mething too often looked down upon upwardiy mobile soci ety suspects countries model building still flourishes since work ing hands highly regarded cites kids flying stick-and-tissue models off hill Innsbruck Austria last visit John Walker Charlottesville VA notes area has comprehensive model magazine stands years whereas Thirties kid access model mag azines simple models could build right-then-and-there didnt use much balsaand also flew well could buy models almost anywhere days fiveand-dime stores sporting goods stores big department store continuous modelbuilding demonstration likes has seen Japan late Harry Ohanesian Grand Rapids MI figures part problem beginner gen erally chooses Scale model usually hardest trim fly Kids dont see neat sim ple models putting along overhead anymore Harry would like see kids introduced simple endurance models spanning 20 30 easier build trim some smaller ones Doug Dahike Oshkosh WI opines reasons given lack Juniors hobby ridiculous response old Kids interested cutting edge technology argument wonders model rocketry isnt hip-deep kids skateboards cut ting edge also figures 10 Jun iors stays hobby thats good accom plishment also wonders about adult priori ties money spent frequency control rather Junior programs Perhaps Junior problem bit like weather erybody talks about no body does anything about Maybe could get AMA AARP merge get break dues Geritol same time AA Lidberg Model Plan Service 614 E FordJuly1988 149 izu N CD CO 0 31 x ps 0 x N C Co Co -n I m z 0 z z 0 ci 0 -u JJ 0 -u m I m 0 0 C3 -I CD CD 0 0 C, 0 C, 0 0 01 0