Flights minute indoors powered 13-in span Peanut Scale model construction flight trim imp NIOI9Q DONT IMAGINE very ever have heard Contester almost modelsized full-scale home-built ship shoulder wing ridiculously low-slung fuselage belly almost scrapes ground hadnt either until discovered picture leafing through old issue British publication Aero Modeller appeared ideal Peanut Scale subject Correspondence magazine editor revealed designer builder Leon Teift time resided Chicago area search phone book information service failed turn up such person next step get touch Experimental Aircraft Association Hales Corner WI since ship carried Experi mental logo its fuselage side kind assistance Mr Gene Chase EAA Museum Director happens long-time friend Tulsa Glue Dobber clubmate Mr Teift traced present home Kingman AZ call Mr Teift readily agreed send plans photos Peanut could built Mr Teift model builder teens served WW II bomber waist gunner After war became interested home-builts competed several EAA Design Competitions Fly-Ins Contester serveral original home-builts Mr Tefft Molecule being another might have seen heard about Peanut version built competition flier attain long flights Peanut careful attention must given wood selection prototype weighed little over 712 grams care taken 6-gram ship possible Flights 60 70 seconds common 35-ft ceilings 10% bonus added shoulder-wing layout under AMA scoring system competitive score attained suggest write Micro-X PO Box 1063 Lorain OH 44055 request catalog high quality specially sawn stripped wood March 1981 49 well hardware items before starting project Fuselage primary structure shown black outline two sides built over other carefully separated completely dry bottom longeron should soaked hot water few minutes blotted dry pinned down allowed dry before proceeding two sides assembled proof full-size plane really exists tflough Isni mucn iarger man some inc n Quarter Scale lobs Designer Leon Tefft stands behind pilot identified f-I r-C V3ZSc24 CflU CC END RI _______ I/20X MSLANT JDIHEDF LEFTWING J 3 1/20 -0 SHEET ___________ _____yRIB N___-- _____ 0 ________ I/16X I/&j ________ _______ A Ill COLOR DATA WHITE WITH RED______ AND BLACK TRIM SEE TEXT 8c PHOTOS1DIHEDRAL 2 ALUMTUBEWASHER-NI-I _0a-ULii 11Pi-II * 5I -BALSASCRAP Dt Ji POWER 16LOOP IH I07WIDEa 111 II500TURNS trN0 XPERIMEN AIf0 OjtjI o -c FILLIIION SIDES FUSE AGE LONGE NS AND __EPOXY L2CR05 PIECES AREAj3~~ UNLESS 7-BGR 50 Model Aviation jEThd FLAPj BOTTOM FILL RIGHT WING ILERON OUT LI N E3 WING PEANUT RJ DUNHAM 9 Lj DOWEL 2 REQDI/20SQV 311 I/2OUSQ THRUOUT cL-I 27j LANDING GEAR 015 MW 1 CARVED PROP SEE TEXT RJD N March 1981 51 IIi 1101 iLi IIiI I~I rjI ii 1 WING STRUT I/8X 1/20 box adding cross pieces upright place 1/32 square stringers added Dont points fuselage makes abrupt changes forget front sheeted areas wing attachin top view carefully crack longerons ment fill-in landing gear nose wheel after scoring sharp razor reinforce wires bent shape glued place small dab cement wheels cut light 3/32 sheet edges nose turtleback formers cemented rounded given coat clear dope painted black center hubs produced paper punch card stock has Japanese-tissued entire fuselage covered lightweight Japanese tissue shrunk tight rubbing alcohol given coat very thin nitrate dope color striping best shown photos being basically white red nose area separated black stripe Carve nose block light balsa small radiator assembled 1/64 sheet landing gear wires can given appearance thickness adding 1/32 strips engine constructed scrap balsa windscreen thin celluloid creased shape Rudder elevator tail surfaces con structed 1/20 square strip Care should taken build structures flat free twists Both covered light Japanese tissue alcohol-shrunk given coat thinned nitrate dope Assemble fuselage very light glue tack since flying adjustments may require changes incidence rudder tum Wing will need make upper-camber airfoil template thin ply aluminum sheet Slice about 16 upper ribs 1/20 sheet will leave couple extras case break few later wing spar also cut 1/20 sheet using metal straightedge Make sure spar straight true before proceeding leading trailing edges pinned down over plan 1/20 square lower-surface ribs positioned place spar laid down kept place small dab glue crossing Let assembly dry thoroughly add upper ribs trimmed length cutting excess rear inboard ribs attach wing fuselage solid ribs slightly canted produce small amount dihedral under wing assembled After covering shrinking doping same tail surfaces add tip plates trim colors wing attached fuselage about 20 positive incidence careful both wings same Propeller use two types props preference going carved-block variety However simplest constructed forming blades thin sheet balsa attaching toothpick hub use common double-pointed toothpick blades 1/32 sheet cut shape shown soaked hot water few minutes soften Stack together shape contour soft-drink can masking tape approximately 20 angle verti cal Bake 2000F oven about 10 minutes wire shaft pushed through toothpick its center reference determining prop blade angle Make small cutout blade match tip shape toothpick glue approximately 450 angle may have make adjustments later blade angle glue can softened acetone angle reset Common problems type prop having blades pitched too high plane becomes unstable flying too slowly and/or blades pitched evenly makes vibration wobbly flight pattem carved prop much superior block should straight-grained medium hard ness carve undercamber first both blades top camber blades should thinned suit sight feel Sand smooth Continued page 117 52 Model Aviation Color striDes bands afloarent views Tip plates give added stability especially dacending nose-high glide attitude Front view nicely snows toothpick-hub prop nose-wheel arrangement wind screen author prefers carved free-wheeling prop better durationaround 50 secs calm air area Try soldering up two holes using tubing smaller *-in feed vent lines also use smallest fuel tubing filter can find limit quantity fuel neither tank nor engine guys against change better stop right go build some tanks Also mail bag letter Dave Clarkson whos now living South Africa truly Knows has seen cycle FAT Combat Britain Europe go Oliver 15 diesel racing glow back again 10-sized diesel FAT going great guns USA land plenty nitro elsewhere things going downhill angry auto manufacturers seeing writing wall concerning conservation fuel resources go blindly flying disposable models built score using nitro-guzzling engines devour $30-a-gallon fuel alarming rates Lets look further ahead summers Nats see what store FAT Combat years down road Dave suggests rethinking rules some thing outside USA can live places nitro components diesel fuel hard come very expen sive Lets assume methanol castor oil will available reasonable prices buy alky $100 gallon castor oil about $900 same quantity suggests 10-size motor 165cc ideal using bushing models no ball-bearing racing engines Lines would 012s 45 ft 11 long 14 meters Im sending Dave Cipolla lOs advertised magazine him test plan pick up myself see what would like fly model such engine John Gladfelter neat Slow Combat ship Nats featured external controls very simple construction approach similar Phil Cartier replaceable-wing model will cost just much build models great thing will take much time Performance almost good top-line model good enough contests know several clubs using one-design concept promoting Slow Combat meets everyone uses ship similar Gladfelters no disadvantage because slightly heavier draggier plane Ill leave something want list AAC setup Rossi Yep chromed aluminum liner aluminum pistonall $60 Write Henry Nelson 729 Valemont Dr Verona PA 15147 sure include stamped self-addressed envelope Henry prob ably wont have time reply can write address end column wont much good because Ijust steam off stamps save up buy glow plugs props Charlie Johnson 3716 Ingraham St San Diego CA 92109 Contester/Dunham Continued page 52 give two coats clear dope Flying prefer use right-hand pattem may need bit right rudder and/or right thrust ship being different Start power flights about 600 turns 1oop 1/16-in rubber strip about 14 long using geared winder As successful flights made progress winds may have experiment rubber size get optimum combination ship would suggest employ winding tube higher turns protect against breakage tube can constructed balsa though ready-made small di ameter plastic fiberglass tube will work pro viding will slide through nose opening properly adjusted ship capable times ranging neighborhood 50 70 seconds indoors Outdoor flight times tend vary greatly depending mostly airpicking capabilities Write care magazine have questions need docu mentation FF Indoor/Tenny Continued page 53 mercially available plastic propeller 2 No di mension model may exceed 24-in 3 Model must covered tissue no con denser paper microfilm plastic-based covering will allowed 4 No external wire thread bracing wood bracing allowed 5 onepiece solid motor stick required 6 No gears permitted 7 Model must hand-launched 8 Model rubber-poweredbest single flightof six attempts winsan official flight timed launch touch obstacle ground Bostonian Event other unusual event quite related Scale Bostonian event invented some time ago Ed Whitten apparently supposed take Manhattan Cabin step closer Scale current Bostonian rules 1 Maximum pro jected wingspans 16-in 2 Maximum wing chords 3-in 4 Maximum propeller diameter 6-in 4 Power limited rubber motors 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14-in measured front propeller bearing 7 Fuselage must contain theoretical box measuring 1-in 2-in 3-in larger longerons must both support motors form exceed box requirementno motor stick allowedfuselage must have forward windshield window side must equal exceed 1in square area 8 Landing gear must fixed two -in minimum-diameter wheels rigid enough support model hand-glided landing 9 ROG takeoffs required flights 10 Charisma Factor judge rates model depending upon much model appeals him based construction neatness scale-like details uniqueness design etca 10 110 rating usedtwo models may given same ratingthe models rated against other against 10 110 scale 11 An unlimited number official flights allowed total full seconds best three flights multiplied Charisma Factor Bud Tenny P0 Box 545 Richardson TX 75080 FF Duration/Meuser Continued page 55 AMA NationalsIndoor events scheduled same site June 20-23 See Competi tion Newsletter section February issue details RBMcM Wing construction Ive written about types wing construction times past have attempts solve same problem conflicting goals lightweight strength freedom March 1981 117
Edition: Model Aviation - 1981/03
Page Numbers: 49, 50, 51, 52, 117
Flights minute indoors powered 13-in span Peanut Scale model construction flight trim imp NIOI9Q DONT IMAGINE very ever have heard Contester almost modelsized full-scale home-built ship shoulder wing ridiculously low-slung fuselage belly almost scrapes ground hadnt either until discovered picture leafing through old issue British publication Aero Modeller appeared ideal Peanut Scale subject Correspondence magazine editor revealed designer builder Leon Teift time resided Chicago area search phone book information service failed turn up such person next step get touch Experimental Aircraft Association Hales Corner WI since ship carried Experi mental logo its fuselage side kind assistance Mr Gene Chase EAA Museum Director happens long-time friend Tulsa Glue Dobber clubmate Mr Teift traced present home Kingman AZ call Mr Teift readily agreed send plans photos Peanut could built Mr Teift model builder teens served WW II bomber waist gunner After war became interested home-builts competed several EAA Design Competitions Fly-Ins Contester serveral original home-builts Mr Tefft Molecule being another might have seen heard about Peanut version built competition flier attain long flights Peanut careful attention must given wood selection prototype weighed little over 712 grams care taken 6-gram ship possible Flights 60 70 seconds common 35-ft ceilings 10% bonus added shoulder-wing layout under AMA scoring system competitive score attained suggest write Micro-X PO Box 1063 Lorain OH 44055 request catalog high quality specially sawn stripped wood March 1981 49 well hardware items before starting project Fuselage primary structure shown black outline two sides built over other carefully separated completely dry bottom longeron should soaked hot water few minutes blotted dry pinned down allowed dry before proceeding two sides assembled proof full-size plane really exists tflough Isni mucn iarger man some inc n Quarter Scale lobs Designer Leon Tefft stands behind pilot identified f-I r-C V3ZSc24 CflU CC END RI _______ I/20X MSLANT JDIHEDF LEFTWING J 3 1/20 -0 SHEET ___________ _____yRIB N___-- _____ 0 ________ I/16X I/&j ________ _______ A Ill COLOR DATA WHITE WITH RED______ AND BLACK TRIM SEE TEXT 8c PHOTOS1DIHEDRAL 2 ALUMTUBEWASHER-NI-I _0a-ULii 11Pi-II * 5I -BALSASCRAP Dt Ji POWER 16LOOP IH I07WIDEa 111 II500TURNS trN0 XPERIMEN AIf0 OjtjI o -c FILLIIION SIDES FUSE AGE LONGE NS AND __EPOXY L2CR05 PIECES AREAj3~~ UNLESS 7-BGR 50 Model Aviation jEThd FLAPj BOTTOM FILL RIGHT WING ILERON OUT LI N E3 WING PEANUT RJ DUNHAM 9 Lj DOWEL 2 REQDI/20SQV 311 I/2OUSQ THRUOUT cL-I 27j LANDING GEAR 015 MW 1 CARVED PROP SEE TEXT RJD N March 1981 51 IIi 1101 iLi IIiI I~I rjI ii 1 WING STRUT I/8X 1/20 box adding cross pieces upright place 1/32 square stringers added Dont points fuselage makes abrupt changes forget front sheeted areas wing attachin top view carefully crack longerons ment fill-in landing gear nose wheel after scoring sharp razor reinforce wires bent shape glued place small dab cement wheels cut light 3/32 sheet edges nose turtleback formers cemented rounded given coat clear dope painted black center hubs produced paper punch card stock has Japanese-tissued entire fuselage covered lightweight Japanese tissue shrunk tight rubbing alcohol given coat very thin nitrate dope color striping best shown photos being basically white red nose area separated black stripe Carve nose block light balsa small radiator assembled 1/64 sheet landing gear wires can given appearance thickness adding 1/32 strips engine constructed scrap balsa windscreen thin celluloid creased shape Rudder elevator tail surfaces con structed 1/20 square strip Care should taken build structures flat free twists Both covered light Japanese tissue alcohol-shrunk given coat thinned nitrate dope Assemble fuselage very light glue tack since flying adjustments may require changes incidence rudder tum Wing will need make upper-camber airfoil template thin ply aluminum sheet Slice about 16 upper ribs 1/20 sheet will leave couple extras case break few later wing spar also cut 1/20 sheet using metal straightedge Make sure spar straight true before proceeding leading trailing edges pinned down over plan 1/20 square lower-surface ribs positioned place spar laid down kept place small dab glue crossing Let assembly dry thoroughly add upper ribs trimmed length cutting excess rear inboard ribs attach wing fuselage solid ribs slightly canted produce small amount dihedral under wing assembled After covering shrinking doping same tail surfaces add tip plates trim colors wing attached fuselage about 20 positive incidence careful both wings same Propeller use two types props preference going carved-block variety However simplest constructed forming blades thin sheet balsa attaching toothpick hub use common double-pointed toothpick blades 1/32 sheet cut shape shown soaked hot water few minutes soften Stack together shape contour soft-drink can masking tape approximately 20 angle verti cal Bake 2000F oven about 10 minutes wire shaft pushed through toothpick its center reference determining prop blade angle Make small cutout blade match tip shape toothpick glue approximately 450 angle may have make adjustments later blade angle glue can softened acetone angle reset Common problems type prop having blades pitched too high plane becomes unstable flying too slowly and/or blades pitched evenly makes vibration wobbly flight pattem carved prop much superior block should straight-grained medium hard ness carve undercamber first both blades top camber blades should thinned suit sight feel Sand smooth Continued page 117 52 Model Aviation Color striDes bands afloarent views Tip plates give added stability especially dacending nose-high glide attitude Front view nicely snows toothpick-hub prop nose-wheel arrangement wind screen author prefers carved free-wheeling prop better durationaround 50 secs calm air area Try soldering up two holes using tubing smaller *-in feed vent lines also use smallest fuel tubing filter can find limit quantity fuel neither tank nor engine guys against change better stop right go build some tanks Also mail bag letter Dave Clarkson whos now living South Africa truly Knows has seen cycle FAT Combat Britain Europe go Oliver 15 diesel racing glow back again 10-sized diesel FAT going great guns USA land plenty nitro elsewhere things going downhill angry auto manufacturers seeing writing wall concerning conservation fuel resources go blindly flying disposable models built score using nitro-guzzling engines devour $30-a-gallon fuel alarming rates Lets look further ahead summers Nats see what store FAT Combat years down road Dave suggests rethinking rules some thing outside USA can live places nitro components diesel fuel hard come very expen sive Lets assume methanol castor oil will available reasonable prices buy alky $100 gallon castor oil about $900 same quantity suggests 10-size motor 165cc ideal using bushing models no ball-bearing racing engines Lines would 012s 45 ft 11 long 14 meters Im sending Dave Cipolla lOs advertised magazine him test plan pick up myself see what would like fly model such engine John Gladfelter neat Slow Combat ship Nats featured external controls very simple construction approach similar Phil Cartier replaceable-wing model will cost just much build models great thing will take much time Performance almost good top-line model good enough contests know several clubs using one-design concept promoting Slow Combat meets everyone uses ship similar Gladfelters no disadvantage because slightly heavier draggier plane Ill leave something want list AAC setup Rossi Yep chromed aluminum liner aluminum pistonall $60 Write Henry Nelson 729 Valemont Dr Verona PA 15147 sure include stamped self-addressed envelope Henry prob ably wont have time reply can write address end column wont much good because Ijust steam off stamps save up buy glow plugs props Charlie Johnson 3716 Ingraham St San Diego CA 92109 Contester/Dunham Continued page 52 give two coats clear dope Flying prefer use right-hand pattem may need bit right rudder and/or right thrust ship being different Start power flights about 600 turns 1oop 1/16-in rubber strip about 14 long using geared winder As successful flights made progress winds may have experiment rubber size get optimum combination ship would suggest employ winding tube higher turns protect against breakage tube can constructed balsa though ready-made small di ameter plastic fiberglass tube will work pro viding will slide through nose opening properly adjusted ship capable times ranging neighborhood 50 70 seconds indoors Outdoor flight times tend vary greatly depending mostly airpicking capabilities Write care magazine have questions need docu mentation FF Indoor/Tenny Continued page 53 mercially available plastic propeller 2 No di mension model may exceed 24-in 3 Model must covered tissue no con denser paper microfilm plastic-based covering will allowed 4 No external wire thread bracing wood bracing allowed 5 onepiece solid motor stick required 6 No gears permitted 7 Model must hand-launched 8 Model rubber-poweredbest single flightof six attempts winsan official flight timed launch touch obstacle ground Bostonian Event other unusual event quite related Scale Bostonian event invented some time ago Ed Whitten apparently supposed take Manhattan Cabin step closer Scale current Bostonian rules 1 Maximum pro jected wingspans 16-in 2 Maximum wing chords 3-in 4 Maximum propeller diameter 6-in 4 Power limited rubber motors 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14-in measured front propeller bearing 7 Fuselage must contain theoretical box measuring 1-in 2-in 3-in larger longerons must both support motors form exceed box requirementno motor stick allowedfuselage must have forward windshield window side must equal exceed 1in square area 8 Landing gear must fixed two -in minimum-diameter wheels rigid enough support model hand-glided landing 9 ROG takeoffs required flights 10 Charisma Factor judge rates model depending upon much model appeals him based construction neatness scale-like details uniqueness design etca 10 110 rating usedtwo models may given same ratingthe models rated against other against 10 110 scale 11 An unlimited number official flights allowed total full seconds best three flights multiplied Charisma Factor Bud Tenny P0 Box 545 Richardson TX 75080 FF Duration/Meuser Continued page 55 AMA NationalsIndoor events scheduled same site June 20-23 See Competi tion Newsletter section February issue details RBMcM Wing construction Ive written about types wing construction times past have attempts solve same problem conflicting goals lightweight strength freedom March 1981 117
Edition: Model Aviation - 1981/03
Page Numbers: 49, 50, 51, 52, 117
Flights minute indoors powered 13-in span Peanut Scale model construction flight trim imp NIOI9Q DONT IMAGINE very ever have heard Contester almost modelsized full-scale home-built ship shoulder wing ridiculously low-slung fuselage belly almost scrapes ground hadnt either until discovered picture leafing through old issue British publication Aero Modeller appeared ideal Peanut Scale subject Correspondence magazine editor revealed designer builder Leon Teift time resided Chicago area search phone book information service failed turn up such person next step get touch Experimental Aircraft Association Hales Corner WI since ship carried Experi mental logo its fuselage side kind assistance Mr Gene Chase EAA Museum Director happens long-time friend Tulsa Glue Dobber clubmate Mr Teift traced present home Kingman AZ call Mr Teift readily agreed send plans photos Peanut could built Mr Teift model builder teens served WW II bomber waist gunner After war became interested home-builts competed several EAA Design Competitions Fly-Ins Contester serveral original home-builts Mr Tefft Molecule being another might have seen heard about Peanut version built competition flier attain long flights Peanut careful attention must given wood selection prototype weighed little over 712 grams care taken 6-gram ship possible Flights 60 70 seconds common 35-ft ceilings 10% bonus added shoulder-wing layout under AMA scoring system competitive score attained suggest write Micro-X PO Box 1063 Lorain OH 44055 request catalog high quality specially sawn stripped wood March 1981 49 well hardware items before starting project Fuselage primary structure shown black outline two sides built over other carefully separated completely dry bottom longeron should soaked hot water few minutes blotted dry pinned down allowed dry before proceeding two sides assembled proof full-size plane really exists tflough Isni mucn iarger man some inc n Quarter Scale lobs Designer Leon Tefft stands behind pilot identified f-I r-C V3ZSc24 CflU CC END RI _______ I/20X MSLANT JDIHEDF LEFTWING J 3 1/20 -0 SHEET ___________ _____yRIB N___-- _____ 0 ________ I/16X I/&j ________ _______ A Ill COLOR DATA WHITE WITH RED______ AND BLACK TRIM SEE TEXT 8c PHOTOS1DIHEDRAL 2 ALUMTUBEWASHER-NI-I _0a-ULii 11Pi-II * 5I -BALSASCRAP Dt Ji POWER 16LOOP IH I07WIDEa 111 II500TURNS trN0 XPERIMEN AIf0 OjtjI o -c FILLIIION SIDES FUSE AGE LONGE NS AND __EPOXY L2CR05 PIECES AREAj3~~ UNLESS 7-BGR 50 Model Aviation jEThd FLAPj BOTTOM FILL RIGHT WING ILERON OUT LI N E3 WING PEANUT RJ DUNHAM 9 Lj DOWEL 2 REQDI/20SQV 311 I/2OUSQ THRUOUT cL-I 27j LANDING GEAR 015 MW 1 CARVED PROP SEE TEXT RJD N March 1981 51 IIi 1101 iLi IIiI I~I rjI ii 1 WING STRUT I/8X 1/20 box adding cross pieces upright place 1/32 square stringers added Dont points fuselage makes abrupt changes forget front sheeted areas wing attachin top view carefully crack longerons ment fill-in landing gear nose wheel after scoring sharp razor reinforce wires bent shape glued place small dab cement wheels cut light 3/32 sheet edges nose turtleback formers cemented rounded given coat clear dope painted black center hubs produced paper punch card stock has Japanese-tissued entire fuselage covered lightweight Japanese tissue shrunk tight rubbing alcohol given coat very thin nitrate dope color striping best shown photos being basically white red nose area separated black stripe Carve nose block light balsa small radiator assembled 1/64 sheet landing gear wires can given appearance thickness adding 1/32 strips engine constructed scrap balsa windscreen thin celluloid creased shape Rudder elevator tail surfaces con structed 1/20 square strip Care should taken build structures flat free twists Both covered light Japanese tissue alcohol-shrunk given coat thinned nitrate dope Assemble fuselage very light glue tack since flying adjustments may require changes incidence rudder tum Wing will need make upper-camber airfoil template thin ply aluminum sheet Slice about 16 upper ribs 1/20 sheet will leave couple extras case break few later wing spar also cut 1/20 sheet using metal straightedge Make sure spar straight true before proceeding leading trailing edges pinned down over plan 1/20 square lower-surface ribs positioned place spar laid down kept place small dab glue crossing Let assembly dry thoroughly add upper ribs trimmed length cutting excess rear inboard ribs attach wing fuselage solid ribs slightly canted produce small amount dihedral under wing assembled After covering shrinking doping same tail surfaces add tip plates trim colors wing attached fuselage about 20 positive incidence careful both wings same Propeller use two types props preference going carved-block variety However simplest constructed forming blades thin sheet balsa attaching toothpick hub use common double-pointed toothpick blades 1/32 sheet cut shape shown soaked hot water few minutes soften Stack together shape contour soft-drink can masking tape approximately 20 angle verti cal Bake 2000F oven about 10 minutes wire shaft pushed through toothpick its center reference determining prop blade angle Make small cutout blade match tip shape toothpick glue approximately 450 angle may have make adjustments later blade angle glue can softened acetone angle reset Common problems type prop having blades pitched too high plane becomes unstable flying too slowly and/or blades pitched evenly makes vibration wobbly flight pattem carved prop much superior block should straight-grained medium hard ness carve undercamber first both blades top camber blades should thinned suit sight feel Sand smooth Continued page 117 52 Model Aviation Color striDes bands afloarent views Tip plates give added stability especially dacending nose-high glide attitude Front view nicely snows toothpick-hub prop nose-wheel arrangement wind screen author prefers carved free-wheeling prop better durationaround 50 secs calm air area Try soldering up two holes using tubing smaller *-in feed vent lines also use smallest fuel tubing filter can find limit quantity fuel neither tank nor engine guys against change better stop right go build some tanks Also mail bag letter Dave Clarkson whos now living South Africa truly Knows has seen cycle FAT Combat Britain Europe go Oliver 15 diesel racing glow back again 10-sized diesel FAT going great guns USA land plenty nitro elsewhere things going downhill angry auto manufacturers seeing writing wall concerning conservation fuel resources go blindly flying disposable models built score using nitro-guzzling engines devour $30-a-gallon fuel alarming rates Lets look further ahead summers Nats see what store FAT Combat years down road Dave suggests rethinking rules some thing outside USA can live places nitro components diesel fuel hard come very expen sive Lets assume methanol castor oil will available reasonable prices buy alky $100 gallon castor oil about $900 same quantity suggests 10-size motor 165cc ideal using bushing models no ball-bearing racing engines Lines would 012s 45 ft 11 long 14 meters Im sending Dave Cipolla lOs advertised magazine him test plan pick up myself see what would like fly model such engine John Gladfelter neat Slow Combat ship Nats featured external controls very simple construction approach similar Phil Cartier replaceable-wing model will cost just much build models great thing will take much time Performance almost good top-line model good enough contests know several clubs using one-design concept promoting Slow Combat meets everyone uses ship similar Gladfelters no disadvantage because slightly heavier draggier plane Ill leave something want list AAC setup Rossi Yep chromed aluminum liner aluminum pistonall $60 Write Henry Nelson 729 Valemont Dr Verona PA 15147 sure include stamped self-addressed envelope Henry prob ably wont have time reply can write address end column wont much good because Ijust steam off stamps save up buy glow plugs props Charlie Johnson 3716 Ingraham St San Diego CA 92109 Contester/Dunham Continued page 52 give two coats clear dope Flying prefer use right-hand pattem may need bit right rudder and/or right thrust ship being different Start power flights about 600 turns 1oop 1/16-in rubber strip about 14 long using geared winder As successful flights made progress winds may have experiment rubber size get optimum combination ship would suggest employ winding tube higher turns protect against breakage tube can constructed balsa though ready-made small di ameter plastic fiberglass tube will work pro viding will slide through nose opening properly adjusted ship capable times ranging neighborhood 50 70 seconds indoors Outdoor flight times tend vary greatly depending mostly airpicking capabilities Write care magazine have questions need docu mentation FF Indoor/Tenny Continued page 53 mercially available plastic propeller 2 No di mension model may exceed 24-in 3 Model must covered tissue no con denser paper microfilm plastic-based covering will allowed 4 No external wire thread bracing wood bracing allowed 5 onepiece solid motor stick required 6 No gears permitted 7 Model must hand-launched 8 Model rubber-poweredbest single flightof six attempts winsan official flight timed launch touch obstacle ground Bostonian Event other unusual event quite related Scale Bostonian event invented some time ago Ed Whitten apparently supposed take Manhattan Cabin step closer Scale current Bostonian rules 1 Maximum pro jected wingspans 16-in 2 Maximum wing chords 3-in 4 Maximum propeller diameter 6-in 4 Power limited rubber motors 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14-in measured front propeller bearing 7 Fuselage must contain theoretical box measuring 1-in 2-in 3-in larger longerons must both support motors form exceed box requirementno motor stick allowedfuselage must have forward windshield window side must equal exceed 1in square area 8 Landing gear must fixed two -in minimum-diameter wheels rigid enough support model hand-glided landing 9 ROG takeoffs required flights 10 Charisma Factor judge rates model depending upon much model appeals him based construction neatness scale-like details uniqueness design etca 10 110 rating usedtwo models may given same ratingthe models rated against other against 10 110 scale 11 An unlimited number official flights allowed total full seconds best three flights multiplied Charisma Factor Bud Tenny P0 Box 545 Richardson TX 75080 FF Duration/Meuser Continued page 55 AMA NationalsIndoor events scheduled same site June 20-23 See Competi tion Newsletter section February issue details RBMcM Wing construction Ive written about types wing construction times past have attempts solve same problem conflicting goals lightweight strength freedom March 1981 117
Edition: Model Aviation - 1981/03
Page Numbers: 49, 50, 51, 52, 117
Flights minute indoors powered 13-in span Peanut Scale model construction flight trim imp NIOI9Q DONT IMAGINE very ever have heard Contester almost modelsized full-scale home-built ship shoulder wing ridiculously low-slung fuselage belly almost scrapes ground hadnt either until discovered picture leafing through old issue British publication Aero Modeller appeared ideal Peanut Scale subject Correspondence magazine editor revealed designer builder Leon Teift time resided Chicago area search phone book information service failed turn up such person next step get touch Experimental Aircraft Association Hales Corner WI since ship carried Experi mental logo its fuselage side kind assistance Mr Gene Chase EAA Museum Director happens long-time friend Tulsa Glue Dobber clubmate Mr Teift traced present home Kingman AZ call Mr Teift readily agreed send plans photos Peanut could built Mr Teift model builder teens served WW II bomber waist gunner After war became interested home-builts competed several EAA Design Competitions Fly-Ins Contester serveral original home-builts Mr Tefft Molecule being another might have seen heard about Peanut version built competition flier attain long flights Peanut careful attention must given wood selection prototype weighed little over 712 grams care taken 6-gram ship possible Flights 60 70 seconds common 35-ft ceilings 10% bonus added shoulder-wing layout under AMA scoring system competitive score attained suggest write Micro-X PO Box 1063 Lorain OH 44055 request catalog high quality specially sawn stripped wood March 1981 49 well hardware items before starting project Fuselage primary structure shown black outline two sides built over other carefully separated completely dry bottom longeron should soaked hot water few minutes blotted dry pinned down allowed dry before proceeding two sides assembled proof full-size plane really exists tflough Isni mucn iarger man some inc n Quarter Scale lobs Designer Leon Tefft stands behind pilot identified f-I r-C V3ZSc24 CflU CC END RI _______ I/20X MSLANT JDIHEDF LEFTWING J 3 1/20 -0 SHEET ___________ _____yRIB N___-- _____ 0 ________ I/16X I/&j ________ _______ A Ill COLOR DATA WHITE WITH RED______ AND BLACK TRIM SEE TEXT 8c PHOTOS1DIHEDRAL 2 ALUMTUBEWASHER-NI-I _0a-ULii 11Pi-II * 5I -BALSASCRAP Dt Ji POWER 16LOOP IH I07WIDEa 111 II500TURNS trN0 XPERIMEN AIf0 OjtjI o -c FILLIIION SIDES FUSE AGE LONGE NS AND __EPOXY L2CR05 PIECES AREAj3~~ UNLESS 7-BGR 50 Model Aviation jEThd FLAPj BOTTOM FILL RIGHT WING ILERON OUT LI N E3 WING PEANUT RJ DUNHAM 9 Lj DOWEL 2 REQDI/20SQV 311 I/2OUSQ THRUOUT cL-I 27j LANDING GEAR 015 MW 1 CARVED PROP SEE TEXT RJD N March 1981 51 IIi 1101 iLi IIiI I~I rjI ii 1 WING STRUT I/8X 1/20 box adding cross pieces upright place 1/32 square stringers added Dont points fuselage makes abrupt changes forget front sheeted areas wing attachin top view carefully crack longerons ment fill-in landing gear nose wheel after scoring sharp razor reinforce wires bent shape glued place small dab cement wheels cut light 3/32 sheet edges nose turtleback formers cemented rounded given coat clear dope painted black center hubs produced paper punch card stock has Japanese-tissued entire fuselage covered lightweight Japanese tissue shrunk tight rubbing alcohol given coat very thin nitrate dope color striping best shown photos being basically white red nose area separated black stripe Carve nose block light balsa small radiator assembled 1/64 sheet landing gear wires can given appearance thickness adding 1/32 strips engine constructed scrap balsa windscreen thin celluloid creased shape Rudder elevator tail surfaces con structed 1/20 square strip Care should taken build structures flat free twists Both covered light Japanese tissue alcohol-shrunk given coat thinned nitrate dope Assemble fuselage very light glue tack since flying adjustments may require changes incidence rudder tum Wing will need make upper-camber airfoil template thin ply aluminum sheet Slice about 16 upper ribs 1/20 sheet will leave couple extras case break few later wing spar also cut 1/20 sheet using metal straightedge Make sure spar straight true before proceeding leading trailing edges pinned down over plan 1/20 square lower-surface ribs positioned place spar laid down kept place small dab glue crossing Let assembly dry thoroughly add upper ribs trimmed length cutting excess rear inboard ribs attach wing fuselage solid ribs slightly canted produce small amount dihedral under wing assembled After covering shrinking doping same tail surfaces add tip plates trim colors wing attached fuselage about 20 positive incidence careful both wings same Propeller use two types props preference going carved-block variety However simplest constructed forming blades thin sheet balsa attaching toothpick hub use common double-pointed toothpick blades 1/32 sheet cut shape shown soaked hot water few minutes soften Stack together shape contour soft-drink can masking tape approximately 20 angle verti cal Bake 2000F oven about 10 minutes wire shaft pushed through toothpick its center reference determining prop blade angle Make small cutout blade match tip shape toothpick glue approximately 450 angle may have make adjustments later blade angle glue can softened acetone angle reset Common problems type prop having blades pitched too high plane becomes unstable flying too slowly and/or blades pitched evenly makes vibration wobbly flight pattem carved prop much superior block should straight-grained medium hard ness carve undercamber first both blades top camber blades should thinned suit sight feel Sand smooth Continued page 117 52 Model Aviation Color striDes bands afloarent views Tip plates give added stability especially dacending nose-high glide attitude Front view nicely snows toothpick-hub prop nose-wheel arrangement wind screen author prefers carved free-wheeling prop better durationaround 50 secs calm air area Try soldering up two holes using tubing smaller *-in feed vent lines also use smallest fuel tubing filter can find limit quantity fuel neither tank nor engine guys against change better stop right go build some tanks Also mail bag letter Dave Clarkson whos now living South Africa truly Knows has seen cycle FAT Combat Britain Europe go Oliver 15 diesel racing glow back again 10-sized diesel FAT going great guns USA land plenty nitro elsewhere things going downhill angry auto manufacturers seeing writing wall concerning conservation fuel resources go blindly flying disposable models built score using nitro-guzzling engines devour $30-a-gallon fuel alarming rates Lets look further ahead summers Nats see what store FAT Combat years down road Dave suggests rethinking rules some thing outside USA can live places nitro components diesel fuel hard come very expen sive Lets assume methanol castor oil will available reasonable prices buy alky $100 gallon castor oil about $900 same quantity suggests 10-size motor 165cc ideal using bushing models no ball-bearing racing engines Lines would 012s 45 ft 11 long 14 meters Im sending Dave Cipolla lOs advertised magazine him test plan pick up myself see what would like fly model such engine John Gladfelter neat Slow Combat ship Nats featured external controls very simple construction approach similar Phil Cartier replaceable-wing model will cost just much build models great thing will take much time Performance almost good top-line model good enough contests know several clubs using one-design concept promoting Slow Combat meets everyone uses ship similar Gladfelters no disadvantage because slightly heavier draggier plane Ill leave something want list AAC setup Rossi Yep chromed aluminum liner aluminum pistonall $60 Write Henry Nelson 729 Valemont Dr Verona PA 15147 sure include stamped self-addressed envelope Henry prob ably wont have time reply can write address end column wont much good because Ijust steam off stamps save up buy glow plugs props Charlie Johnson 3716 Ingraham St San Diego CA 92109 Contester/Dunham Continued page 52 give two coats clear dope Flying prefer use right-hand pattem may need bit right rudder and/or right thrust ship being different Start power flights about 600 turns 1oop 1/16-in rubber strip about 14 long using geared winder As successful flights made progress winds may have experiment rubber size get optimum combination ship would suggest employ winding tube higher turns protect against breakage tube can constructed balsa though ready-made small di ameter plastic fiberglass tube will work pro viding will slide through nose opening properly adjusted ship capable times ranging neighborhood 50 70 seconds indoors Outdoor flight times tend vary greatly depending mostly airpicking capabilities Write care magazine have questions need docu mentation FF Indoor/Tenny Continued page 53 mercially available plastic propeller 2 No di mension model may exceed 24-in 3 Model must covered tissue no con denser paper microfilm plastic-based covering will allowed 4 No external wire thread bracing wood bracing allowed 5 onepiece solid motor stick required 6 No gears permitted 7 Model must hand-launched 8 Model rubber-poweredbest single flightof six attempts winsan official flight timed launch touch obstacle ground Bostonian Event other unusual event quite related Scale Bostonian event invented some time ago Ed Whitten apparently supposed take Manhattan Cabin step closer Scale current Bostonian rules 1 Maximum pro jected wingspans 16-in 2 Maximum wing chords 3-in 4 Maximum propeller diameter 6-in 4 Power limited rubber motors 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14-in measured front propeller bearing 7 Fuselage must contain theoretical box measuring 1-in 2-in 3-in larger longerons must both support motors form exceed box requirementno motor stick allowedfuselage must have forward windshield window side must equal exceed 1in square area 8 Landing gear must fixed two -in minimum-diameter wheels rigid enough support model hand-glided landing 9 ROG takeoffs required flights 10 Charisma Factor judge rates model depending upon much model appeals him based construction neatness scale-like details uniqueness design etca 10 110 rating usedtwo models may given same ratingthe models rated against other against 10 110 scale 11 An unlimited number official flights allowed total full seconds best three flights multiplied Charisma Factor Bud Tenny P0 Box 545 Richardson TX 75080 FF Duration/Meuser Continued page 55 AMA NationalsIndoor events scheduled same site June 20-23 See Competi tion Newsletter section February issue details RBMcM Wing construction Ive written about types wing construction times past have attempts solve same problem conflicting goals lightweight strength freedom March 1981 117
Edition: Model Aviation - 1981/03
Page Numbers: 49, 50, 51, 52, 117
Flights minute indoors powered 13-in span Peanut Scale model construction flight trim imp NIOI9Q DONT IMAGINE very ever have heard Contester almost modelsized full-scale home-built ship shoulder wing ridiculously low-slung fuselage belly almost scrapes ground hadnt either until discovered picture leafing through old issue British publication Aero Modeller appeared ideal Peanut Scale subject Correspondence magazine editor revealed designer builder Leon Teift time resided Chicago area search phone book information service failed turn up such person next step get touch Experimental Aircraft Association Hales Corner WI since ship carried Experi mental logo its fuselage side kind assistance Mr Gene Chase EAA Museum Director happens long-time friend Tulsa Glue Dobber clubmate Mr Teift traced present home Kingman AZ call Mr Teift readily agreed send plans photos Peanut could built Mr Teift model builder teens served WW II bomber waist gunner After war became interested home-builts competed several EAA Design Competitions Fly-Ins Contester serveral original home-builts Mr Tefft Molecule being another might have seen heard about Peanut version built competition flier attain long flights Peanut careful attention must given wood selection prototype weighed little over 712 grams care taken 6-gram ship possible Flights 60 70 seconds common 35-ft ceilings 10% bonus added shoulder-wing layout under AMA scoring system competitive score attained suggest write Micro-X PO Box 1063 Lorain OH 44055 request catalog high quality specially sawn stripped wood March 1981 49 well hardware items before starting project Fuselage primary structure shown black outline two sides built over other carefully separated completely dry bottom longeron should soaked hot water few minutes blotted dry pinned down allowed dry before proceeding two sides assembled proof full-size plane really exists tflough Isni mucn iarger man some inc n Quarter Scale lobs Designer Leon Tefft stands behind pilot identified f-I r-C V3ZSc24 CflU CC END RI _______ I/20X MSLANT JDIHEDF LEFTWING J 3 1/20 -0 SHEET ___________ _____yRIB N___-- _____ 0 ________ I/16X I/&j ________ _______ A Ill COLOR DATA WHITE WITH RED______ AND BLACK TRIM SEE TEXT 8c PHOTOS1DIHEDRAL 2 ALUMTUBEWASHER-NI-I _0a-ULii 11Pi-II * 5I -BALSASCRAP Dt Ji POWER 16LOOP IH I07WIDEa 111 II500TURNS trN0 XPERIMEN AIf0 OjtjI o -c FILLIIION SIDES FUSE AGE LONGE NS AND __EPOXY L2CR05 PIECES AREAj3~~ UNLESS 7-BGR 50 Model Aviation jEThd FLAPj BOTTOM FILL RIGHT WING ILERON OUT LI N E3 WING PEANUT RJ DUNHAM 9 Lj DOWEL 2 REQDI/20SQV 311 I/2OUSQ THRUOUT cL-I 27j LANDING GEAR 015 MW 1 CARVED PROP SEE TEXT RJD N March 1981 51 IIi 1101 iLi IIiI I~I rjI ii 1 WING STRUT I/8X 1/20 box adding cross pieces upright place 1/32 square stringers added Dont points fuselage makes abrupt changes forget front sheeted areas wing attachin top view carefully crack longerons ment fill-in landing gear nose wheel after scoring sharp razor reinforce wires bent shape glued place small dab cement wheels cut light 3/32 sheet edges nose turtleback formers cemented rounded given coat clear dope painted black center hubs produced paper punch card stock has Japanese-tissued entire fuselage covered lightweight Japanese tissue shrunk tight rubbing alcohol given coat very thin nitrate dope color striping best shown photos being basically white red nose area separated black stripe Carve nose block light balsa small radiator assembled 1/64 sheet landing gear wires can given appearance thickness adding 1/32 strips engine constructed scrap balsa windscreen thin celluloid creased shape Rudder elevator tail surfaces con structed 1/20 square strip Care should taken build structures flat free twists Both covered light Japanese tissue alcohol-shrunk given coat thinned nitrate dope Assemble fuselage very light glue tack since flying adjustments may require changes incidence rudder tum Wing will need make upper-camber airfoil template thin ply aluminum sheet Slice about 16 upper ribs 1/20 sheet will leave couple extras case break few later wing spar also cut 1/20 sheet using metal straightedge Make sure spar straight true before proceeding leading trailing edges pinned down over plan 1/20 square lower-surface ribs positioned place spar laid down kept place small dab glue crossing Let assembly dry thoroughly add upper ribs trimmed length cutting excess rear inboard ribs attach wing fuselage solid ribs slightly canted produce small amount dihedral under wing assembled After covering shrinking doping same tail surfaces add tip plates trim colors wing attached fuselage about 20 positive incidence careful both wings same Propeller use two types props preference going carved-block variety However simplest constructed forming blades thin sheet balsa attaching toothpick hub use common double-pointed toothpick blades 1/32 sheet cut shape shown soaked hot water few minutes soften Stack together shape contour soft-drink can masking tape approximately 20 angle verti cal Bake 2000F oven about 10 minutes wire shaft pushed through toothpick its center reference determining prop blade angle Make small cutout blade match tip shape toothpick glue approximately 450 angle may have make adjustments later blade angle glue can softened acetone angle reset Common problems type prop having blades pitched too high plane becomes unstable flying too slowly and/or blades pitched evenly makes vibration wobbly flight pattem carved prop much superior block should straight-grained medium hard ness carve undercamber first both blades top camber blades should thinned suit sight feel Sand smooth Continued page 117 52 Model Aviation Color striDes bands afloarent views Tip plates give added stability especially dacending nose-high glide attitude Front view nicely snows toothpick-hub prop nose-wheel arrangement wind screen author prefers carved free-wheeling prop better durationaround 50 secs calm air area Try soldering up two holes using tubing smaller *-in feed vent lines also use smallest fuel tubing filter can find limit quantity fuel neither tank nor engine guys against change better stop right go build some tanks Also mail bag letter Dave Clarkson whos now living South Africa truly Knows has seen cycle FAT Combat Britain Europe go Oliver 15 diesel racing glow back again 10-sized diesel FAT going great guns USA land plenty nitro elsewhere things going downhill angry auto manufacturers seeing writing wall concerning conservation fuel resources go blindly flying disposable models built score using nitro-guzzling engines devour $30-a-gallon fuel alarming rates Lets look further ahead summers Nats see what store FAT Combat years down road Dave suggests rethinking rules some thing outside USA can live places nitro components diesel fuel hard come very expen sive Lets assume methanol castor oil will available reasonable prices buy alky $100 gallon castor oil about $900 same quantity suggests 10-size motor 165cc ideal using bushing models no ball-bearing racing engines Lines would 012s 45 ft 11 long 14 meters Im sending Dave Cipolla lOs advertised magazine him test plan pick up myself see what would like fly model such engine John Gladfelter neat Slow Combat ship Nats featured external controls very simple construction approach similar Phil Cartier replaceable-wing model will cost just much build models great thing will take much time Performance almost good top-line model good enough contests know several clubs using one-design concept promoting Slow Combat meets everyone uses ship similar Gladfelters no disadvantage because slightly heavier draggier plane Ill leave something want list AAC setup Rossi Yep chromed aluminum liner aluminum pistonall $60 Write Henry Nelson 729 Valemont Dr Verona PA 15147 sure include stamped self-addressed envelope Henry prob ably wont have time reply can write address end column wont much good because Ijust steam off stamps save up buy glow plugs props Charlie Johnson 3716 Ingraham St San Diego CA 92109 Contester/Dunham Continued page 52 give two coats clear dope Flying prefer use right-hand pattem may need bit right rudder and/or right thrust ship being different Start power flights about 600 turns 1oop 1/16-in rubber strip about 14 long using geared winder As successful flights made progress winds may have experiment rubber size get optimum combination ship would suggest employ winding tube higher turns protect against breakage tube can constructed balsa though ready-made small di ameter plastic fiberglass tube will work pro viding will slide through nose opening properly adjusted ship capable times ranging neighborhood 50 70 seconds indoors Outdoor flight times tend vary greatly depending mostly airpicking capabilities Write care magazine have questions need docu mentation FF Indoor/Tenny Continued page 53 mercially available plastic propeller 2 No di mension model may exceed 24-in 3 Model must covered tissue no con denser paper microfilm plastic-based covering will allowed 4 No external wire thread bracing wood bracing allowed 5 onepiece solid motor stick required 6 No gears permitted 7 Model must hand-launched 8 Model rubber-poweredbest single flightof six attempts winsan official flight timed launch touch obstacle ground Bostonian Event other unusual event quite related Scale Bostonian event invented some time ago Ed Whitten apparently supposed take Manhattan Cabin step closer Scale current Bostonian rules 1 Maximum pro jected wingspans 16-in 2 Maximum wing chords 3-in 4 Maximum propeller diameter 6-in 4 Power limited rubber motors 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14-in measured front propeller bearing 7 Fuselage must contain theoretical box measuring 1-in 2-in 3-in larger longerons must both support motors form exceed box requirementno motor stick allowedfuselage must have forward windshield window side must equal exceed 1in square area 8 Landing gear must fixed two -in minimum-diameter wheels rigid enough support model hand-glided landing 9 ROG takeoffs required flights 10 Charisma Factor judge rates model depending upon much model appeals him based construction neatness scale-like details uniqueness design etca 10 110 rating usedtwo models may given same ratingthe models rated against other against 10 110 scale 11 An unlimited number official flights allowed total full seconds best three flights multiplied Charisma Factor Bud Tenny P0 Box 545 Richardson TX 75080 FF Duration/Meuser Continued page 55 AMA NationalsIndoor events scheduled same site June 20-23 See Competi tion Newsletter section February issue details RBMcM Wing construction Ive written about types wing construction times past have attempts solve same problem conflicting goals lightweight strength freedom March 1981 117