OF SWINGERS Flappers Folders Other Wonderous Things Variable-Configuration Model Aircraft file getting little fat figured about time thin out writing nice orderly series items subject What world Variable-Config uration Model Aircraft Well refer VCMA Basically model aircraft change shape during flight Some people would call Variable-Geometry aircraft view Geometiy academic subject once obliged bore myself half death Ill bet hasnt varied smidgin past 137 years suppose should distinguish between VCMA Automatic Control Model Aircraftpen dulum control perhaps gyro-stabilized models auto-stabs auto-rudders likebut Im going worry lot about precise definitions Well plans nice orderly review subject shot because young whipper-snapper name Stan Stoy decided just couldnt stand didnt set new Open national AMA record Indoor Hand-Launch Gli ders Category 11100 maximum ceiling height go folder natural order things Stan hadnt set record Id describing efforts IHLG folders along about halfpast Chapter 14 Stan may recall chap broke Category IHLG record Coot very turbulent air went reset record dead calm air idea behind folders have wings folded up low-drag configura tion during climb have unfurl glory glide has tried before gas models rubberpower models both catapult hand-launch gliders varying degrees success sufficient success have made lasting impact competition free flight popular arrangement during past few decades has hinge wings points half way between fuselage tip fold outer halves downward end up rather thick symmetrical streamlined airfoil section hero tried such arrangement noticed large cavity between wing panelsa result undercamber decided fill up something useful such wing result Tripple Folder Clearly cant simply take old IHLG make folder reasonable expectation success whole works has carefully engineered start finish Stan has obviously done homework engineering depart ment after working out details still problem building model everything fits folds accurately intended Stans glidersand has built quite few part team helped Bob White successful assault Cat Mulvihill record L R Jason Kendy Piserchio Bob big bird lrv Aker miming member no other Toni White camera caught 38 Model Aviation Bob Rouach sends oft FAIPower model mighty heave Bong Field WI Markos plc hi J requires about 50 hours build critical areas folder critical de manding rather clever engineering mechanism holds wings folded position during climb re leases proper instant small mechanical timer such made Continued page 113 August 1979 39 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541 new super quiet K&B 40 R/C muffler requires no exhaust plugs fittings adaptors Muffler machined fit exhaust stack cover exposed holes Just bolt on.thats Will reduce noise 10 12 decibels little no loss rpms Noise cancelled interposing sound waves eRadi cal free flow expansion chamber angled blow exhaust away fuselage attach provision pressure fitting Also available ENVA 29 35 40 45 05 MAX 30 35 40 SUPER TIGRE G21 35 46 Add $100 extra above engines specify type Mounting strap screw included $1295 No 306 Quiet Power -Tatone Makes Easy 4ht Add $125 postage handling CA residents add 6% tax Dealer nqulries invited Grumman Guardian XTB3F-28ClassiCarrierGETORGANIZED CLD-1 02HareS Set 014 stwdy Ides holds over 4 years yaw Icoolde 8 II magazines 4 MAG FILES $495 71 ______________ IScRog Edwardssetds4ge1tIussIao poslage handing ld DOM INOUSTRISS DERNISTIC MODELS ox 388-K PO BOX 6974 ALBUQ NM 8719 OOVER NH casso follows Willis C Brown Early organizer model aviation activites Boston first President AMA Lt Harold W Alden original driving forces creation AMA William E Bill Atwood Prolific model engine designer Charles H Chuck Broadhurst Early NFFS Director AMA Vice President originator West Coast FF Cham pionships precursor USFF Champs model aviation writer Richard B Dick Black organizers NFFS early Editor /TO column Model Airplane News magazine Carl W Fries organizers driving forces behind NFFS Charles Hampson Grant Early Editor Model Airplane News magazine author inventor aeronautical designer youth leader leader development model aviation theory Joseph Joe Bilgri Consistent builder competitor classes free flight former Indoor World Champion Ralph Bud Tenny Organizer National Indoor Model Aircraft Society editor publisher its monthly publica tion Indoor News Views over 15 years constant driving force behind Indoor model aviation activities W Hewitt Phillips major contributor model aviation technology will Free Flight Hall Fame Awards Banquet part NFFS Sympo Nats July 31 8 pm sharp University Nebraska Stu dent Union Dining Room Advance reser vadons mandatory must made July 20 Price known writing youll hearing about Contact person Anthony J Italiano 1655 Revere Drive Brookfield W153005 Last years awards presentation talks awardees once-in-a-lifetime experiences youll never forget year should better Model Year Awards Tony Italiano NFFS Awards Chairman announces recipients awards 1979 International Class FIA Nordic Wonder BirdJim WaltersUSA FIB Rubber Les WakeLes DeWittUSA FIC Power ZellRoger SimpsonUSA AMA/Outdoor Small Power LunarTicHarry Murphy Rubber StratomaxFrank Heeb Indoor Sb-MoOtto HeitheckerHLG GeminiRon GanserCabin Special Awards VolksplaneCharles Sotich Cox 049/051 Cox Hobbies Inc P-30 ConceptHarry Steinmetz/John Oldenkamp awards made annually National Free Flight Society awardees will present discuss models NFFS-sponsored event Nats Discussion photos three-views will appear NFFS Symposium Re port available Nats later NFFS World Champs Weve heard little about plans main event some peripheral activities shaping up Ac cording Hardy Brodersen Exec Director NFFS will Interna tional NFFS Symposium book plans sold NFFS Champs proquality movies competition Technical Task Force gather technical data NFFS Sympo Intemat MCd Indoor team manager Ray Harlan will follow general lines annual NFFS Sympos held Nats publication talks will follow speaker already lined up Paul MacCready won Kremer prize man-powered aircraft Gossamer Condor writing incidentally MacCready crew about take off Engiand four complete aircraftgreatly improved over Condorfor attempt win second Kremer Prize peddling across Engiish Channel 22-mile grind will take about two hours plane small fast machine foul weather will require effort pilot Brian Allen can crank out other machines can fly day distance problem Two tasks assigned tech task force headed Fred Pearce gathering tech nical data aircraft measurement altitude attained models three classes formidable task indeed will certainly nice know much altitude really attained Nordic zoom launches high power models really able climb John Oldenkamp teaches photog raphy university level will have group well-trained well-briefed students cover ing action movie cameras Hope fully will get edited film available rentaL NFFS plans book edited Dave Linstrum will hopefully contain welldetailed full-page drawings of models entered competition price tag about $15 preliminary planning stage writing its pretty good starters Gas Records Set Hulan Mathies set Open Category D-Gas record score whompin 69 min 4 sec Thats 13 5minute maxes final flight 404 Engine run limited 8 sec last 10 flights did Taft Cal March 11 using 1 188-sq-in Satellite powered Rossi 60 turning 11 X4 K W prop Late March Keith Morgan Fresno set Senior D-Gas record Category II flights totaling 13 mm 44 sec week later repeated performance Thermal Thumbers-SHOC Annual Taft Category score of28 mm 30 sec model Satellite 1000 pulled K&B 41 turning K&W 10X4 prop Half-A Recordi Bill Valentine set -A Gas Open Category record of4l mm 20 sec Taft March 31 using old modified Galaxie Now might find hard believe model powered Cox TD-049 using Cox 6X3 prop New World Record Valery Miakinin USSR has established new FAI world record Class F Sub-Class F-i-c pistonmotor seaplane free flight 2926 kin/h 1818 mph Nats Unofficial F/F Events Terry Rimert 114 Model Aviation r THE HIGH COST OF ROTOR _______ BLADES KEEPING YOU GROUNDED LET YOUR COPTER FLY AGAIN WITH BLADES BY BOBCO KAVAN Jet Ranger -Scale Expert ......$1295 COMMANDER -Std Expert . .. 895 H ELI-BOV..... 895 COMING SOON REVOLUTION 1 HELl-BABY 495 top quality precision blades made same material original equipment No covering material supplied 10% discount 5 sets Calif. residents add 6% sales tax allow time check clearance add 150 postage handling send check money order BOBCO 2504 C-i So Santa Fe Avenue Vista California 92083 Tel 714 727 4130 NFFS Unofficial Events Director has coordinated following unofficial F/F events cooperation sponsoring clubs July 29Manhattan Formula door Helioopter Autogiro Ornithopter July 31Rubber-Power Speed Outdoor Helicopter Autogiro Omithopter Night Flying Aug 1Electric Power Aug 2Cargo P-30 Dick Korda Open Rubber Aug 4Embryo Endurance dont forget NFFS Symposium Aug 2 NFFS Hall Fame Awards Banquet July31 Keep eye bulletin boards Nats Check Terry last-minute changes address 367 Orange Ave Baldwin FL 32234 Bob Meuser 4200 Gregory St Oak lan4 CA 94619 FF Sport/Scale/Warner continued page 41 motor should go side shaft facing driven part will bend back central prop shaft away too important large diameter wire light motors becomes important times Eds right have experience having some quick thread wrapping flying site myself payment considering Thermal-worthy aircraft Rearwin Speedsters Having seen Ken Sykora over seven minutes Earl Stahl Speedster Bob Oslan win Taft consistent over-two-minute flights cannot reconunend little beauty too highly FAC Scale wInner Don SrulI launches hIs Japanese Shinden really unusual design super stable plans Jumbo size ~7E3ave Dlatt iviodels Inc New design V-LOCK provides positive lock UP DOWN cylinder5/8 bore . Made super-tough 0frictionless CAPRON Retraction angle 85 degrees allow average dihedral low-wing aircraft Low profile overall compact size uuV Only 1% high fits airfoil LE Massive legs-- diameter alloy spring shock-absorbing bottom end includedt Very simple design using 2 moving parts Disassembled easily self-servicing FOR LARGE MODELS FROM 60 UP TO 1/4 SCALE New RETRACTING LANDING GEAR Weve answered large-model enthusiasts need reliable RLG system exclusive patent pending V-LOCK system Designed Dave Platt 15 years practical highly success ful experience RLG-equipped contest RC scale models air-actuated system extremely strong powerful .will easily lift 1/4-scale legs heavy scale wheels doors etc COMPLETE OUTFIT INCLUDES 2 main units 2 shock legs supporting equipment--air tank switcher valve inlet valve on-plane pressure indicator tubing etc Optional extras--air regulator valves air pump speed reducers available Dave Platt Models SYSTEM PRICE $11900 order Sold direct No dealer mark-up buy manu fact urer gives best value Write call order. accept check Money Order Master Charge Visa cards pay UPS anywhere USA Please send registered return-receipt-requested mail Florida residents add 4% sales tax K nave Dlatt ivuodels inc 6940 NW 15th St Plantation Fla 33313 Phone 305 5874861 eves&wkencts Nol affiliated other company August 1979 115
Edition: Model Aviation - 1979/08
Page Numbers: 38, 39, 113, 114, 115
OF SWINGERS Flappers Folders Other Wonderous Things Variable-Configuration Model Aircraft file getting little fat figured about time thin out writing nice orderly series items subject What world Variable-Config uration Model Aircraft Well refer VCMA Basically model aircraft change shape during flight Some people would call Variable-Geometry aircraft view Geometiy academic subject once obliged bore myself half death Ill bet hasnt varied smidgin past 137 years suppose should distinguish between VCMA Automatic Control Model Aircraftpen dulum control perhaps gyro-stabilized models auto-stabs auto-rudders likebut Im going worry lot about precise definitions Well plans nice orderly review subject shot because young whipper-snapper name Stan Stoy decided just couldnt stand didnt set new Open national AMA record Indoor Hand-Launch Gli ders Category 11100 maximum ceiling height go folder natural order things Stan hadnt set record Id describing efforts IHLG folders along about halfpast Chapter 14 Stan may recall chap broke Category IHLG record Coot very turbulent air went reset record dead calm air idea behind folders have wings folded up low-drag configura tion during climb have unfurl glory glide has tried before gas models rubberpower models both catapult hand-launch gliders varying degrees success sufficient success have made lasting impact competition free flight popular arrangement during past few decades has hinge wings points half way between fuselage tip fold outer halves downward end up rather thick symmetrical streamlined airfoil section hero tried such arrangement noticed large cavity between wing panelsa result undercamber decided fill up something useful such wing result Tripple Folder Clearly cant simply take old IHLG make folder reasonable expectation success whole works has carefully engineered start finish Stan has obviously done homework engineering depart ment after working out details still problem building model everything fits folds accurately intended Stans glidersand has built quite few part team helped Bob White successful assault Cat Mulvihill record L R Jason Kendy Piserchio Bob big bird lrv Aker miming member no other Toni White camera caught 38 Model Aviation Bob Rouach sends oft FAIPower model mighty heave Bong Field WI Markos plc hi J requires about 50 hours build critical areas folder critical de manding rather clever engineering mechanism holds wings folded position during climb re leases proper instant small mechanical timer such made Continued page 113 August 1979 39 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541 new super quiet K&B 40 R/C muffler requires no exhaust plugs fittings adaptors Muffler machined fit exhaust stack cover exposed holes Just bolt on.thats Will reduce noise 10 12 decibels little no loss rpms Noise cancelled interposing sound waves eRadi cal free flow expansion chamber angled blow exhaust away fuselage attach provision pressure fitting Also available ENVA 29 35 40 45 05 MAX 30 35 40 SUPER TIGRE G21 35 46 Add $100 extra above engines specify type Mounting strap screw included $1295 No 306 Quiet Power -Tatone Makes Easy 4ht Add $125 postage handling CA residents add 6% tax Dealer nqulries invited Grumman Guardian XTB3F-28ClassiCarrierGETORGANIZED CLD-1 02HareS Set 014 stwdy Ides holds over 4 years yaw Icoolde 8 II magazines 4 MAG FILES $495 71 ______________ IScRog Edwardssetds4ge1tIussIao poslage handing ld DOM INOUSTRISS DERNISTIC MODELS ox 388-K PO BOX 6974 ALBUQ NM 8719 OOVER NH casso follows Willis C Brown Early organizer model aviation activites Boston first President AMA Lt Harold W Alden original driving forces creation AMA William E Bill Atwood Prolific model engine designer Charles H Chuck Broadhurst Early NFFS Director AMA Vice President originator West Coast FF Cham pionships precursor USFF Champs model aviation writer Richard B Dick Black organizers NFFS early Editor /TO column Model Airplane News magazine Carl W Fries organizers driving forces behind NFFS Charles Hampson Grant Early Editor Model Airplane News magazine author inventor aeronautical designer youth leader leader development model aviation theory Joseph Joe Bilgri Consistent builder competitor classes free flight former Indoor World Champion Ralph Bud Tenny Organizer National Indoor Model Aircraft Society editor publisher its monthly publica tion Indoor News Views over 15 years constant driving force behind Indoor model aviation activities W Hewitt Phillips major contributor model aviation technology will Free Flight Hall Fame Awards Banquet part NFFS Sympo Nats July 31 8 pm sharp University Nebraska Stu dent Union Dining Room Advance reser vadons mandatory must made July 20 Price known writing youll hearing about Contact person Anthony J Italiano 1655 Revere Drive Brookfield W153005 Last years awards presentation talks awardees once-in-a-lifetime experiences youll never forget year should better Model Year Awards Tony Italiano NFFS Awards Chairman announces recipients awards 1979 International Class FIA Nordic Wonder BirdJim WaltersUSA FIB Rubber Les WakeLes DeWittUSA FIC Power ZellRoger SimpsonUSA AMA/Outdoor Small Power LunarTicHarry Murphy Rubber StratomaxFrank Heeb Indoor Sb-MoOtto HeitheckerHLG GeminiRon GanserCabin Special Awards VolksplaneCharles Sotich Cox 049/051 Cox Hobbies Inc P-30 ConceptHarry Steinmetz/John Oldenkamp awards made annually National Free Flight Society awardees will present discuss models NFFS-sponsored event Nats Discussion photos three-views will appear NFFS Symposium Re port available Nats later NFFS World Champs Weve heard little about plans main event some peripheral activities shaping up Ac cording Hardy Brodersen Exec Director NFFS will Interna tional NFFS Symposium book plans sold NFFS Champs proquality movies competition Technical Task Force gather technical data NFFS Sympo Intemat MCd Indoor team manager Ray Harlan will follow general lines annual NFFS Sympos held Nats publication talks will follow speaker already lined up Paul MacCready won Kremer prize man-powered aircraft Gossamer Condor writing incidentally MacCready crew about take off Engiand four complete aircraftgreatly improved over Condorfor attempt win second Kremer Prize peddling across Engiish Channel 22-mile grind will take about two hours plane small fast machine foul weather will require effort pilot Brian Allen can crank out other machines can fly day distance problem Two tasks assigned tech task force headed Fred Pearce gathering tech nical data aircraft measurement altitude attained models three classes formidable task indeed will certainly nice know much altitude really attained Nordic zoom launches high power models really able climb John Oldenkamp teaches photog raphy university level will have group well-trained well-briefed students cover ing action movie cameras Hope fully will get edited film available rentaL NFFS plans book edited Dave Linstrum will hopefully contain welldetailed full-page drawings of models entered competition price tag about $15 preliminary planning stage writing its pretty good starters Gas Records Set Hulan Mathies set Open Category D-Gas record score whompin 69 min 4 sec Thats 13 5minute maxes final flight 404 Engine run limited 8 sec last 10 flights did Taft Cal March 11 using 1 188-sq-in Satellite powered Rossi 60 turning 11 X4 K W prop Late March Keith Morgan Fresno set Senior D-Gas record Category II flights totaling 13 mm 44 sec week later repeated performance Thermal Thumbers-SHOC Annual Taft Category score of28 mm 30 sec model Satellite 1000 pulled K&B 41 turning K&W 10X4 prop Half-A Recordi Bill Valentine set -A Gas Open Category record of4l mm 20 sec Taft March 31 using old modified Galaxie Now might find hard believe model powered Cox TD-049 using Cox 6X3 prop New World Record Valery Miakinin USSR has established new FAI world record Class F Sub-Class F-i-c pistonmotor seaplane free flight 2926 kin/h 1818 mph Nats Unofficial F/F Events Terry Rimert 114 Model Aviation r THE HIGH COST OF ROTOR _______ BLADES KEEPING YOU GROUNDED LET YOUR COPTER FLY AGAIN WITH BLADES BY BOBCO KAVAN Jet Ranger -Scale Expert ......$1295 COMMANDER -Std Expert . .. 895 H ELI-BOV..... 895 COMING SOON REVOLUTION 1 HELl-BABY 495 top quality precision blades made same material original equipment No covering material supplied 10% discount 5 sets Calif. residents add 6% sales tax allow time check clearance add 150 postage handling send check money order BOBCO 2504 C-i So Santa Fe Avenue Vista California 92083 Tel 714 727 4130 NFFS Unofficial Events Director has coordinated following unofficial F/F events cooperation sponsoring clubs July 29Manhattan Formula door Helioopter Autogiro Ornithopter July 31Rubber-Power Speed Outdoor Helicopter Autogiro Omithopter Night Flying Aug 1Electric Power Aug 2Cargo P-30 Dick Korda Open Rubber Aug 4Embryo Endurance dont forget NFFS Symposium Aug 2 NFFS Hall Fame Awards Banquet July31 Keep eye bulletin boards Nats Check Terry last-minute changes address 367 Orange Ave Baldwin FL 32234 Bob Meuser 4200 Gregory St Oak lan4 CA 94619 FF Sport/Scale/Warner continued page 41 motor should go side shaft facing driven part will bend back central prop shaft away too important large diameter wire light motors becomes important times Eds right have experience having some quick thread wrapping flying site myself payment considering Thermal-worthy aircraft Rearwin Speedsters Having seen Ken Sykora over seven minutes Earl Stahl Speedster Bob Oslan win Taft consistent over-two-minute flights cannot reconunend little beauty too highly FAC Scale wInner Don SrulI launches hIs Japanese Shinden really unusual design super stable plans Jumbo size ~7E3ave Dlatt iviodels Inc New design V-LOCK provides positive lock UP DOWN cylinder5/8 bore . Made super-tough 0frictionless CAPRON Retraction angle 85 degrees allow average dihedral low-wing aircraft Low profile overall compact size uuV Only 1% high fits airfoil LE Massive legs-- diameter alloy spring shock-absorbing bottom end includedt Very simple design using 2 moving parts Disassembled easily self-servicing FOR LARGE MODELS FROM 60 UP TO 1/4 SCALE New RETRACTING LANDING GEAR Weve answered large-model enthusiasts need reliable RLG system exclusive patent pending V-LOCK system Designed Dave Platt 15 years practical highly success ful experience RLG-equipped contest RC scale models air-actuated system extremely strong powerful .will easily lift 1/4-scale legs heavy scale wheels doors etc COMPLETE OUTFIT INCLUDES 2 main units 2 shock legs supporting equipment--air tank switcher valve inlet valve on-plane pressure indicator tubing etc Optional extras--air regulator valves air pump speed reducers available Dave Platt Models SYSTEM PRICE $11900 order Sold direct No dealer mark-up buy manu fact urer gives best value Write call order. accept check Money Order Master Charge Visa cards pay UPS anywhere USA Please send registered return-receipt-requested mail Florida residents add 4% sales tax K nave Dlatt ivuodels inc 6940 NW 15th St Plantation Fla 33313 Phone 305 5874861 eves&wkencts Nol affiliated other company August 1979 115
Edition: Model Aviation - 1979/08
Page Numbers: 38, 39, 113, 114, 115
OF SWINGERS Flappers Folders Other Wonderous Things Variable-Configuration Model Aircraft file getting little fat figured about time thin out writing nice orderly series items subject What world Variable-Config uration Model Aircraft Well refer VCMA Basically model aircraft change shape during flight Some people would call Variable-Geometry aircraft view Geometiy academic subject once obliged bore myself half death Ill bet hasnt varied smidgin past 137 years suppose should distinguish between VCMA Automatic Control Model Aircraftpen dulum control perhaps gyro-stabilized models auto-stabs auto-rudders likebut Im going worry lot about precise definitions Well plans nice orderly review subject shot because young whipper-snapper name Stan Stoy decided just couldnt stand didnt set new Open national AMA record Indoor Hand-Launch Gli ders Category 11100 maximum ceiling height go folder natural order things Stan hadnt set record Id describing efforts IHLG folders along about halfpast Chapter 14 Stan may recall chap broke Category IHLG record Coot very turbulent air went reset record dead calm air idea behind folders have wings folded up low-drag configura tion during climb have unfurl glory glide has tried before gas models rubberpower models both catapult hand-launch gliders varying degrees success sufficient success have made lasting impact competition free flight popular arrangement during past few decades has hinge wings points half way between fuselage tip fold outer halves downward end up rather thick symmetrical streamlined airfoil section hero tried such arrangement noticed large cavity between wing panelsa result undercamber decided fill up something useful such wing result Tripple Folder Clearly cant simply take old IHLG make folder reasonable expectation success whole works has carefully engineered start finish Stan has obviously done homework engineering depart ment after working out details still problem building model everything fits folds accurately intended Stans glidersand has built quite few part team helped Bob White successful assault Cat Mulvihill record L R Jason Kendy Piserchio Bob big bird lrv Aker miming member no other Toni White camera caught 38 Model Aviation Bob Rouach sends oft FAIPower model mighty heave Bong Field WI Markos plc hi J requires about 50 hours build critical areas folder critical de manding rather clever engineering mechanism holds wings folded position during climb re leases proper instant small mechanical timer such made Continued page 113 August 1979 39 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541 new super quiet K&B 40 R/C muffler requires no exhaust plugs fittings adaptors Muffler machined fit exhaust stack cover exposed holes Just bolt on.thats Will reduce noise 10 12 decibels little no loss rpms Noise cancelled interposing sound waves eRadi cal free flow expansion chamber angled blow exhaust away fuselage attach provision pressure fitting Also available ENVA 29 35 40 45 05 MAX 30 35 40 SUPER TIGRE G21 35 46 Add $100 extra above engines specify type Mounting strap screw included $1295 No 306 Quiet Power -Tatone Makes Easy 4ht Add $125 postage handling CA residents add 6% tax Dealer nqulries invited Grumman Guardian XTB3F-28ClassiCarrierGETORGANIZED CLD-1 02HareS Set 014 stwdy Ides holds over 4 years yaw Icoolde 8 II magazines 4 MAG FILES $495 71 ______________ IScRog Edwardssetds4ge1tIussIao poslage handing ld DOM INOUSTRISS DERNISTIC MODELS ox 388-K PO BOX 6974 ALBUQ NM 8719 OOVER NH casso follows Willis C Brown Early organizer model aviation activites Boston first President AMA Lt Harold W Alden original driving forces creation AMA William E Bill Atwood Prolific model engine designer Charles H Chuck Broadhurst Early NFFS Director AMA Vice President originator West Coast FF Cham pionships precursor USFF Champs model aviation writer Richard B Dick Black organizers NFFS early Editor /TO column Model Airplane News magazine Carl W Fries organizers driving forces behind NFFS Charles Hampson Grant Early Editor Model Airplane News magazine author inventor aeronautical designer youth leader leader development model aviation theory Joseph Joe Bilgri Consistent builder competitor classes free flight former Indoor World Champion Ralph Bud Tenny Organizer National Indoor Model Aircraft Society editor publisher its monthly publica tion Indoor News Views over 15 years constant driving force behind Indoor model aviation activities W Hewitt Phillips major contributor model aviation technology will Free Flight Hall Fame Awards Banquet part NFFS Sympo Nats July 31 8 pm sharp University Nebraska Stu dent Union Dining Room Advance reser vadons mandatory must made July 20 Price known writing youll hearing about Contact person Anthony J Italiano 1655 Revere Drive Brookfield W153005 Last years awards presentation talks awardees once-in-a-lifetime experiences youll never forget year should better Model Year Awards Tony Italiano NFFS Awards Chairman announces recipients awards 1979 International Class FIA Nordic Wonder BirdJim WaltersUSA FIB Rubber Les WakeLes DeWittUSA FIC Power ZellRoger SimpsonUSA AMA/Outdoor Small Power LunarTicHarry Murphy Rubber StratomaxFrank Heeb Indoor Sb-MoOtto HeitheckerHLG GeminiRon GanserCabin Special Awards VolksplaneCharles Sotich Cox 049/051 Cox Hobbies Inc P-30 ConceptHarry Steinmetz/John Oldenkamp awards made annually National Free Flight Society awardees will present discuss models NFFS-sponsored event Nats Discussion photos three-views will appear NFFS Symposium Re port available Nats later NFFS World Champs Weve heard little about plans main event some peripheral activities shaping up Ac cording Hardy Brodersen Exec Director NFFS will Interna tional NFFS Symposium book plans sold NFFS Champs proquality movies competition Technical Task Force gather technical data NFFS Sympo Intemat MCd Indoor team manager Ray Harlan will follow general lines annual NFFS Sympos held Nats publication talks will follow speaker already lined up Paul MacCready won Kremer prize man-powered aircraft Gossamer Condor writing incidentally MacCready crew about take off Engiand four complete aircraftgreatly improved over Condorfor attempt win second Kremer Prize peddling across Engiish Channel 22-mile grind will take about two hours plane small fast machine foul weather will require effort pilot Brian Allen can crank out other machines can fly day distance problem Two tasks assigned tech task force headed Fred Pearce gathering tech nical data aircraft measurement altitude attained models three classes formidable task indeed will certainly nice know much altitude really attained Nordic zoom launches high power models really able climb John Oldenkamp teaches photog raphy university level will have group well-trained well-briefed students cover ing action movie cameras Hope fully will get edited film available rentaL NFFS plans book edited Dave Linstrum will hopefully contain welldetailed full-page drawings of models entered competition price tag about $15 preliminary planning stage writing its pretty good starters Gas Records Set Hulan Mathies set Open Category D-Gas record score whompin 69 min 4 sec Thats 13 5minute maxes final flight 404 Engine run limited 8 sec last 10 flights did Taft Cal March 11 using 1 188-sq-in Satellite powered Rossi 60 turning 11 X4 K W prop Late March Keith Morgan Fresno set Senior D-Gas record Category II flights totaling 13 mm 44 sec week later repeated performance Thermal Thumbers-SHOC Annual Taft Category score of28 mm 30 sec model Satellite 1000 pulled K&B 41 turning K&W 10X4 prop Half-A Recordi Bill Valentine set -A Gas Open Category record of4l mm 20 sec Taft March 31 using old modified Galaxie Now might find hard believe model powered Cox TD-049 using Cox 6X3 prop New World Record Valery Miakinin USSR has established new FAI world record Class F Sub-Class F-i-c pistonmotor seaplane free flight 2926 kin/h 1818 mph Nats Unofficial F/F Events Terry Rimert 114 Model Aviation r THE HIGH COST OF ROTOR _______ BLADES KEEPING YOU GROUNDED LET YOUR COPTER FLY AGAIN WITH BLADES BY BOBCO KAVAN Jet Ranger -Scale Expert ......$1295 COMMANDER -Std Expert . .. 895 H ELI-BOV..... 895 COMING SOON REVOLUTION 1 HELl-BABY 495 top quality precision blades made same material original equipment No covering material supplied 10% discount 5 sets Calif. residents add 6% sales tax allow time check clearance add 150 postage handling send check money order BOBCO 2504 C-i So Santa Fe Avenue Vista California 92083 Tel 714 727 4130 NFFS Unofficial Events Director has coordinated following unofficial F/F events cooperation sponsoring clubs July 29Manhattan Formula door Helioopter Autogiro Ornithopter July 31Rubber-Power Speed Outdoor Helicopter Autogiro Omithopter Night Flying Aug 1Electric Power Aug 2Cargo P-30 Dick Korda Open Rubber Aug 4Embryo Endurance dont forget NFFS Symposium Aug 2 NFFS Hall Fame Awards Banquet July31 Keep eye bulletin boards Nats Check Terry last-minute changes address 367 Orange Ave Baldwin FL 32234 Bob Meuser 4200 Gregory St Oak lan4 CA 94619 FF Sport/Scale/Warner continued page 41 motor should go side shaft facing driven part will bend back central prop shaft away too important large diameter wire light motors becomes important times Eds right have experience having some quick thread wrapping flying site myself payment considering Thermal-worthy aircraft Rearwin Speedsters Having seen Ken Sykora over seven minutes Earl Stahl Speedster Bob Oslan win Taft consistent over-two-minute flights cannot reconunend little beauty too highly FAC Scale wInner Don SrulI launches hIs Japanese Shinden really unusual design super stable plans Jumbo size ~7E3ave Dlatt iviodels Inc New design V-LOCK provides positive lock UP DOWN cylinder5/8 bore . Made super-tough 0frictionless CAPRON Retraction angle 85 degrees allow average dihedral low-wing aircraft Low profile overall compact size uuV Only 1% high fits airfoil LE Massive legs-- diameter alloy spring shock-absorbing bottom end includedt Very simple design using 2 moving parts Disassembled easily self-servicing FOR LARGE MODELS FROM 60 UP TO 1/4 SCALE New RETRACTING LANDING GEAR Weve answered large-model enthusiasts need reliable RLG system exclusive patent pending V-LOCK system Designed Dave Platt 15 years practical highly success ful experience RLG-equipped contest RC scale models air-actuated system extremely strong powerful .will easily lift 1/4-scale legs heavy scale wheels doors etc COMPLETE OUTFIT INCLUDES 2 main units 2 shock legs supporting equipment--air tank switcher valve inlet valve on-plane pressure indicator tubing etc Optional extras--air regulator valves air pump speed reducers available Dave Platt Models SYSTEM PRICE $11900 order Sold direct No dealer mark-up buy manu fact urer gives best value Write call order. accept check Money Order Master Charge Visa cards pay UPS anywhere USA Please send registered return-receipt-requested mail Florida residents add 4% sales tax K nave Dlatt ivuodels inc 6940 NW 15th St Plantation Fla 33313 Phone 305 5874861 eves&wkencts Nol affiliated other company August 1979 115
Edition: Model Aviation - 1979/08
Page Numbers: 38, 39, 113, 114, 115
OF SWINGERS Flappers Folders Other Wonderous Things Variable-Configuration Model Aircraft file getting little fat figured about time thin out writing nice orderly series items subject What world Variable-Config uration Model Aircraft Well refer VCMA Basically model aircraft change shape during flight Some people would call Variable-Geometry aircraft view Geometiy academic subject once obliged bore myself half death Ill bet hasnt varied smidgin past 137 years suppose should distinguish between VCMA Automatic Control Model Aircraftpen dulum control perhaps gyro-stabilized models auto-stabs auto-rudders likebut Im going worry lot about precise definitions Well plans nice orderly review subject shot because young whipper-snapper name Stan Stoy decided just couldnt stand didnt set new Open national AMA record Indoor Hand-Launch Gli ders Category 11100 maximum ceiling height go folder natural order things Stan hadnt set record Id describing efforts IHLG folders along about halfpast Chapter 14 Stan may recall chap broke Category IHLG record Coot very turbulent air went reset record dead calm air idea behind folders have wings folded up low-drag configura tion during climb have unfurl glory glide has tried before gas models rubberpower models both catapult hand-launch gliders varying degrees success sufficient success have made lasting impact competition free flight popular arrangement during past few decades has hinge wings points half way between fuselage tip fold outer halves downward end up rather thick symmetrical streamlined airfoil section hero tried such arrangement noticed large cavity between wing panelsa result undercamber decided fill up something useful such wing result Tripple Folder Clearly cant simply take old IHLG make folder reasonable expectation success whole works has carefully engineered start finish Stan has obviously done homework engineering depart ment after working out details still problem building model everything fits folds accurately intended Stans glidersand has built quite few part team helped Bob White successful assault Cat Mulvihill record L R Jason Kendy Piserchio Bob big bird lrv Aker miming member no other Toni White camera caught 38 Model Aviation Bob Rouach sends oft FAIPower model mighty heave Bong Field WI Markos plc hi J requires about 50 hours build critical areas folder critical de manding rather clever engineering mechanism holds wings folded position during climb re leases proper instant small mechanical timer such made Continued page 113 August 1979 39 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541 new super quiet K&B 40 R/C muffler requires no exhaust plugs fittings adaptors Muffler machined fit exhaust stack cover exposed holes Just bolt on.thats Will reduce noise 10 12 decibels little no loss rpms Noise cancelled interposing sound waves eRadi cal free flow expansion chamber angled blow exhaust away fuselage attach provision pressure fitting Also available ENVA 29 35 40 45 05 MAX 30 35 40 SUPER TIGRE G21 35 46 Add $100 extra above engines specify type Mounting strap screw included $1295 No 306 Quiet Power -Tatone Makes Easy 4ht Add $125 postage handling CA residents add 6% tax Dealer nqulries invited Grumman Guardian XTB3F-28ClassiCarrierGETORGANIZED CLD-1 02HareS Set 014 stwdy Ides holds over 4 years yaw Icoolde 8 II magazines 4 MAG FILES $495 71 ______________ IScRog Edwardssetds4ge1tIussIao poslage handing ld DOM INOUSTRISS DERNISTIC MODELS ox 388-K PO BOX 6974 ALBUQ NM 8719 OOVER NH casso follows Willis C Brown Early organizer model aviation activites Boston first President AMA Lt Harold W Alden original driving forces creation AMA William E Bill Atwood Prolific model engine designer Charles H Chuck Broadhurst Early NFFS Director AMA Vice President originator West Coast FF Cham pionships precursor USFF Champs model aviation writer Richard B Dick Black organizers NFFS early Editor /TO column Model Airplane News magazine Carl W Fries organizers driving forces behind NFFS Charles Hampson Grant Early Editor Model Airplane News magazine author inventor aeronautical designer youth leader leader development model aviation theory Joseph Joe Bilgri Consistent builder competitor classes free flight former Indoor World Champion Ralph Bud Tenny Organizer National Indoor Model Aircraft Society editor publisher its monthly publica tion Indoor News Views over 15 years constant driving force behind Indoor model aviation activities W Hewitt Phillips major contributor model aviation technology will Free Flight Hall Fame Awards Banquet part NFFS Sympo Nats July 31 8 pm sharp University Nebraska Stu dent Union Dining Room Advance reser vadons mandatory must made July 20 Price known writing youll hearing about Contact person Anthony J Italiano 1655 Revere Drive Brookfield W153005 Last years awards presentation talks awardees once-in-a-lifetime experiences youll never forget year should better Model Year Awards Tony Italiano NFFS Awards Chairman announces recipients awards 1979 International Class FIA Nordic Wonder BirdJim WaltersUSA FIB Rubber Les WakeLes DeWittUSA FIC Power ZellRoger SimpsonUSA AMA/Outdoor Small Power LunarTicHarry Murphy Rubber StratomaxFrank Heeb Indoor Sb-MoOtto HeitheckerHLG GeminiRon GanserCabin Special Awards VolksplaneCharles Sotich Cox 049/051 Cox Hobbies Inc P-30 ConceptHarry Steinmetz/John Oldenkamp awards made annually National Free Flight Society awardees will present discuss models NFFS-sponsored event Nats Discussion photos three-views will appear NFFS Symposium Re port available Nats later NFFS World Champs Weve heard little about plans main event some peripheral activities shaping up Ac cording Hardy Brodersen Exec Director NFFS will Interna tional NFFS Symposium book plans sold NFFS Champs proquality movies competition Technical Task Force gather technical data NFFS Sympo Intemat MCd Indoor team manager Ray Harlan will follow general lines annual NFFS Sympos held Nats publication talks will follow speaker already lined up Paul MacCready won Kremer prize man-powered aircraft Gossamer Condor writing incidentally MacCready crew about take off Engiand four complete aircraftgreatly improved over Condorfor attempt win second Kremer Prize peddling across Engiish Channel 22-mile grind will take about two hours plane small fast machine foul weather will require effort pilot Brian Allen can crank out other machines can fly day distance problem Two tasks assigned tech task force headed Fred Pearce gathering tech nical data aircraft measurement altitude attained models three classes formidable task indeed will certainly nice know much altitude really attained Nordic zoom launches high power models really able climb John Oldenkamp teaches photog raphy university level will have group well-trained well-briefed students cover ing action movie cameras Hope fully will get edited film available rentaL NFFS plans book edited Dave Linstrum will hopefully contain welldetailed full-page drawings of models entered competition price tag about $15 preliminary planning stage writing its pretty good starters Gas Records Set Hulan Mathies set Open Category D-Gas record score whompin 69 min 4 sec Thats 13 5minute maxes final flight 404 Engine run limited 8 sec last 10 flights did Taft Cal March 11 using 1 188-sq-in Satellite powered Rossi 60 turning 11 X4 K W prop Late March Keith Morgan Fresno set Senior D-Gas record Category II flights totaling 13 mm 44 sec week later repeated performance Thermal Thumbers-SHOC Annual Taft Category score of28 mm 30 sec model Satellite 1000 pulled K&B 41 turning K&W 10X4 prop Half-A Recordi Bill Valentine set -A Gas Open Category record of4l mm 20 sec Taft March 31 using old modified Galaxie Now might find hard believe model powered Cox TD-049 using Cox 6X3 prop New World Record Valery Miakinin USSR has established new FAI world record Class F Sub-Class F-i-c pistonmotor seaplane free flight 2926 kin/h 1818 mph Nats Unofficial F/F Events Terry Rimert 114 Model Aviation r THE HIGH COST OF ROTOR _______ BLADES KEEPING YOU GROUNDED LET YOUR COPTER FLY AGAIN WITH BLADES BY BOBCO KAVAN Jet Ranger -Scale Expert ......$1295 COMMANDER -Std Expert . .. 895 H ELI-BOV..... 895 COMING SOON REVOLUTION 1 HELl-BABY 495 top quality precision blades made same material original equipment No covering material supplied 10% discount 5 sets Calif. residents add 6% sales tax allow time check clearance add 150 postage handling send check money order BOBCO 2504 C-i So Santa Fe Avenue Vista California 92083 Tel 714 727 4130 NFFS Unofficial Events Director has coordinated following unofficial F/F events cooperation sponsoring clubs July 29Manhattan Formula door Helioopter Autogiro Ornithopter July 31Rubber-Power Speed Outdoor Helicopter Autogiro Omithopter Night Flying Aug 1Electric Power Aug 2Cargo P-30 Dick Korda Open Rubber Aug 4Embryo Endurance dont forget NFFS Symposium Aug 2 NFFS Hall Fame Awards Banquet July31 Keep eye bulletin boards Nats Check Terry last-minute changes address 367 Orange Ave Baldwin FL 32234 Bob Meuser 4200 Gregory St Oak lan4 CA 94619 FF Sport/Scale/Warner continued page 41 motor should go side shaft facing driven part will bend back central prop shaft away too important large diameter wire light motors becomes important times Eds right have experience having some quick thread wrapping flying site myself payment considering Thermal-worthy aircraft Rearwin Speedsters Having seen Ken Sykora over seven minutes Earl Stahl Speedster Bob Oslan win Taft consistent over-two-minute flights cannot reconunend little beauty too highly FAC Scale wInner Don SrulI launches hIs Japanese Shinden really unusual design super stable plans Jumbo size ~7E3ave Dlatt iviodels Inc New design V-LOCK provides positive lock UP DOWN cylinder5/8 bore . Made super-tough 0frictionless CAPRON Retraction angle 85 degrees allow average dihedral low-wing aircraft Low profile overall compact size uuV Only 1% high fits airfoil LE Massive legs-- diameter alloy spring shock-absorbing bottom end includedt Very simple design using 2 moving parts Disassembled easily self-servicing FOR LARGE MODELS FROM 60 UP TO 1/4 SCALE New RETRACTING LANDING GEAR Weve answered large-model enthusiasts need reliable RLG system exclusive patent pending V-LOCK system Designed Dave Platt 15 years practical highly success ful experience RLG-equipped contest RC scale models air-actuated system extremely strong powerful .will easily lift 1/4-scale legs heavy scale wheels doors etc COMPLETE OUTFIT INCLUDES 2 main units 2 shock legs supporting equipment--air tank switcher valve inlet valve on-plane pressure indicator tubing etc Optional extras--air regulator valves air pump speed reducers available Dave Platt Models SYSTEM PRICE $11900 order Sold direct No dealer mark-up buy manu fact urer gives best value Write call order. accept check Money Order Master Charge Visa cards pay UPS anywhere USA Please send registered return-receipt-requested mail Florida residents add 4% sales tax K nave Dlatt ivuodels inc 6940 NW 15th St Plantation Fla 33313 Phone 305 5874861 eves&wkencts Nol affiliated other company August 1979 115
Edition: Model Aviation - 1979/08
Page Numbers: 38, 39, 113, 114, 115
OF SWINGERS Flappers Folders Other Wonderous Things Variable-Configuration Model Aircraft file getting little fat figured about time thin out writing nice orderly series items subject What world Variable-Config uration Model Aircraft Well refer VCMA Basically model aircraft change shape during flight Some people would call Variable-Geometry aircraft view Geometiy academic subject once obliged bore myself half death Ill bet hasnt varied smidgin past 137 years suppose should distinguish between VCMA Automatic Control Model Aircraftpen dulum control perhaps gyro-stabilized models auto-stabs auto-rudders likebut Im going worry lot about precise definitions Well plans nice orderly review subject shot because young whipper-snapper name Stan Stoy decided just couldnt stand didnt set new Open national AMA record Indoor Hand-Launch Gli ders Category 11100 maximum ceiling height go folder natural order things Stan hadnt set record Id describing efforts IHLG folders along about halfpast Chapter 14 Stan may recall chap broke Category IHLG record Coot very turbulent air went reset record dead calm air idea behind folders have wings folded up low-drag configura tion during climb have unfurl glory glide has tried before gas models rubberpower models both catapult hand-launch gliders varying degrees success sufficient success have made lasting impact competition free flight popular arrangement during past few decades has hinge wings points half way between fuselage tip fold outer halves downward end up rather thick symmetrical streamlined airfoil section hero tried such arrangement noticed large cavity between wing panelsa result undercamber decided fill up something useful such wing result Tripple Folder Clearly cant simply take old IHLG make folder reasonable expectation success whole works has carefully engineered start finish Stan has obviously done homework engineering depart ment after working out details still problem building model everything fits folds accurately intended Stans glidersand has built quite few part team helped Bob White successful assault Cat Mulvihill record L R Jason Kendy Piserchio Bob big bird lrv Aker miming member no other Toni White camera caught 38 Model Aviation Bob Rouach sends oft FAIPower model mighty heave Bong Field WI Markos plc hi J requires about 50 hours build critical areas folder critical de manding rather clever engineering mechanism holds wings folded position during climb re leases proper instant small mechanical timer such made Continued page 113 August 1979 39 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541 new super quiet K&B 40 R/C muffler requires no exhaust plugs fittings adaptors Muffler machined fit exhaust stack cover exposed holes Just bolt on.thats Will reduce noise 10 12 decibels little no loss rpms Noise cancelled interposing sound waves eRadi cal free flow expansion chamber angled blow exhaust away fuselage attach provision pressure fitting Also available ENVA 29 35 40 45 05 MAX 30 35 40 SUPER TIGRE G21 35 46 Add $100 extra above engines specify type Mounting strap screw included $1295 No 306 Quiet Power -Tatone Makes Easy 4ht Add $125 postage handling CA residents add 6% tax Dealer nqulries invited Grumman Guardian XTB3F-28ClassiCarrierGETORGANIZED CLD-1 02HareS Set 014 stwdy Ides holds over 4 years yaw Icoolde 8 II magazines 4 MAG FILES $495 71 ______________ IScRog Edwardssetds4ge1tIussIao poslage handing ld DOM INOUSTRISS DERNISTIC MODELS ox 388-K PO BOX 6974 ALBUQ NM 8719 OOVER NH casso follows Willis C Brown Early organizer model aviation activites Boston first President AMA Lt Harold W Alden original driving forces creation AMA William E Bill Atwood Prolific model engine designer Charles H Chuck Broadhurst Early NFFS Director AMA Vice President originator West Coast FF Cham pionships precursor USFF Champs model aviation writer Richard B Dick Black organizers NFFS early Editor /TO column Model Airplane News magazine Carl W Fries organizers driving forces behind NFFS Charles Hampson Grant Early Editor Model Airplane News magazine author inventor aeronautical designer youth leader leader development model aviation theory Joseph Joe Bilgri Consistent builder competitor classes free flight former Indoor World Champion Ralph Bud Tenny Organizer National Indoor Model Aircraft Society editor publisher its monthly publica tion Indoor News Views over 15 years constant driving force behind Indoor model aviation activities W Hewitt Phillips major contributor model aviation technology will Free Flight Hall Fame Awards Banquet part NFFS Sympo Nats July 31 8 pm sharp University Nebraska Stu dent Union Dining Room Advance reser vadons mandatory must made July 20 Price known writing youll hearing about Contact person Anthony J Italiano 1655 Revere Drive Brookfield W153005 Last years awards presentation talks awardees once-in-a-lifetime experiences youll never forget year should better Model Year Awards Tony Italiano NFFS Awards Chairman announces recipients awards 1979 International Class FIA Nordic Wonder BirdJim WaltersUSA FIB Rubber Les WakeLes DeWittUSA FIC Power ZellRoger SimpsonUSA AMA/Outdoor Small Power LunarTicHarry Murphy Rubber StratomaxFrank Heeb Indoor Sb-MoOtto HeitheckerHLG GeminiRon GanserCabin Special Awards VolksplaneCharles Sotich Cox 049/051 Cox Hobbies Inc P-30 ConceptHarry Steinmetz/John Oldenkamp awards made annually National Free Flight Society awardees will present discuss models NFFS-sponsored event Nats Discussion photos three-views will appear NFFS Symposium Re port available Nats later NFFS World Champs Weve heard little about plans main event some peripheral activities shaping up Ac cording Hardy Brodersen Exec Director NFFS will Interna tional NFFS Symposium book plans sold NFFS Champs proquality movies competition Technical Task Force gather technical data NFFS Sympo Intemat MCd Indoor team manager Ray Harlan will follow general lines annual NFFS Sympos held Nats publication talks will follow speaker already lined up Paul MacCready won Kremer prize man-powered aircraft Gossamer Condor writing incidentally MacCready crew about take off Engiand four complete aircraftgreatly improved over Condorfor attempt win second Kremer Prize peddling across Engiish Channel 22-mile grind will take about two hours plane small fast machine foul weather will require effort pilot Brian Allen can crank out other machines can fly day distance problem Two tasks assigned tech task force headed Fred Pearce gathering tech nical data aircraft measurement altitude attained models three classes formidable task indeed will certainly nice know much altitude really attained Nordic zoom launches high power models really able climb John Oldenkamp teaches photog raphy university level will have group well-trained well-briefed students cover ing action movie cameras Hope fully will get edited film available rentaL NFFS plans book edited Dave Linstrum will hopefully contain welldetailed full-page drawings of models entered competition price tag about $15 preliminary planning stage writing its pretty good starters Gas Records Set Hulan Mathies set Open Category D-Gas record score whompin 69 min 4 sec Thats 13 5minute maxes final flight 404 Engine run limited 8 sec last 10 flights did Taft Cal March 11 using 1 188-sq-in Satellite powered Rossi 60 turning 11 X4 K W prop Late March Keith Morgan Fresno set Senior D-Gas record Category II flights totaling 13 mm 44 sec week later repeated performance Thermal Thumbers-SHOC Annual Taft Category score of28 mm 30 sec model Satellite 1000 pulled K&B 41 turning K&W 10X4 prop Half-A Recordi Bill Valentine set -A Gas Open Category record of4l mm 20 sec Taft March 31 using old modified Galaxie Now might find hard believe model powered Cox TD-049 using Cox 6X3 prop New World Record Valery Miakinin USSR has established new FAI world record Class F Sub-Class F-i-c pistonmotor seaplane free flight 2926 kin/h 1818 mph Nats Unofficial F/F Events Terry Rimert 114 Model Aviation r THE HIGH COST OF ROTOR _______ BLADES KEEPING YOU GROUNDED LET YOUR COPTER FLY AGAIN WITH BLADES BY BOBCO KAVAN Jet Ranger -Scale Expert ......$1295 COMMANDER -Std Expert . .. 895 H ELI-BOV..... 895 COMING SOON REVOLUTION 1 HELl-BABY 495 top quality precision blades made same material original equipment No covering material supplied 10% discount 5 sets Calif. residents add 6% sales tax allow time check clearance add 150 postage handling send check money order BOBCO 2504 C-i So Santa Fe Avenue Vista California 92083 Tel 714 727 4130 NFFS Unofficial Events Director has coordinated following unofficial F/F events cooperation sponsoring clubs July 29Manhattan Formula door Helioopter Autogiro Ornithopter July 31Rubber-Power Speed Outdoor Helicopter Autogiro Omithopter Night Flying Aug 1Electric Power Aug 2Cargo P-30 Dick Korda Open Rubber Aug 4Embryo Endurance dont forget NFFS Symposium Aug 2 NFFS Hall Fame Awards Banquet July31 Keep eye bulletin boards Nats Check Terry last-minute changes address 367 Orange Ave Baldwin FL 32234 Bob Meuser 4200 Gregory St Oak lan4 CA 94619 FF Sport/Scale/Warner continued page 41 motor should go side shaft facing driven part will bend back central prop shaft away too important large diameter wire light motors becomes important times Eds right have experience having some quick thread wrapping flying site myself payment considering Thermal-worthy aircraft Rearwin Speedsters Having seen Ken Sykora over seven minutes Earl Stahl Speedster Bob Oslan win Taft consistent over-two-minute flights cannot reconunend little beauty too highly FAC Scale wInner Don SrulI launches hIs Japanese Shinden really unusual design super stable plans Jumbo size ~7E3ave Dlatt iviodels Inc New design V-LOCK provides positive lock UP DOWN cylinder5/8 bore . Made super-tough 0frictionless CAPRON Retraction angle 85 degrees allow average dihedral low-wing aircraft Low profile overall compact size uuV Only 1% high fits airfoil LE Massive legs-- diameter alloy spring shock-absorbing bottom end includedt Very simple design using 2 moving parts Disassembled easily self-servicing FOR LARGE MODELS FROM 60 UP TO 1/4 SCALE New RETRACTING LANDING GEAR Weve answered large-model enthusiasts need reliable RLG system exclusive patent pending V-LOCK system Designed Dave Platt 15 years practical highly success ful experience RLG-equipped contest RC scale models air-actuated system extremely strong powerful .will easily lift 1/4-scale legs heavy scale wheels doors etc COMPLETE OUTFIT INCLUDES 2 main units 2 shock legs supporting equipment--air tank switcher valve inlet valve on-plane pressure indicator tubing etc Optional extras--air regulator valves air pump speed reducers available Dave Platt Models SYSTEM PRICE $11900 order Sold direct No dealer mark-up buy manu fact urer gives best value Write call order. accept check Money Order Master Charge Visa cards pay UPS anywhere USA Please send registered return-receipt-requested mail Florida residents add 4% sales tax K nave Dlatt ivuodels inc 6940 NW 15th St Plantation Fla 33313 Phone 305 5874861 eves&wkencts Nol affiliated other company August 1979 115