One enjoyable Indoor events Manhattan cabin Heres good -IVa 2~\ VLc\I Elm MiIler MANHATTAN Cabin Fever air 1976 Indoor Nationals held Columbus Ohio infected immediately letter Bob Larsh Central Indiana Aeromodellers CIA inviting participate Manhattan Cabin event annual contest really gave bug havent recovered since Since am expert aerodynamic theory studied John Triolos Nats winner designed ship wasnt too far winning combination After several trimming sessions 527 flight under 42-foot ceiling CIA contest gave first hint its true capabilities spring NIMAS Record Trials West Baden Indiana proved model winner 97-foot ceiling provided perfect opportunity pour winds motor let ship go out 21-in loop 080 Pirelli 103 winder turns 16 1 produced test flight 7219 same motor used after 20-minute rest 110 winder turns flight perfect WASH-IN AT LEFT flP l/1BSOWING POSTS ROUNDED TO FT TSSUE TUBES DOUBLE BE4ARW N TI-IRUST CELLOPHANE 3/lSSI-I NOSE BLOCK FiALL AROUND NOSE GHEERAL BREAK 1/3Dx1/l WING RIBS Il/325H STE K~J POSTS BELOW 0-IEDRAL BREAK 1/1R50 LE AND TIC TAPERED CELLOPHANEFRONT AND REAR OP FIN 1/4DIAl/B4 PLY ALL DINGONALS l/3251/16 OUBLER TISSUE TUBES/1SSOITYPOPPOSITE SDE SHOWN4 g MINIMUM WEIGHT DOTTED ______________________NO COVERING FERE NS 4S USE INDOOR DUALITY THIS PIECE AT5-BIb BALSA STE I-lARD 1/TRSO STRUTSTOP ONLY CUT WHEELS FROMI1/1SOF 1I4 WHEEL HUB FOAM MEAT TEATWITH 020 GA HOSE FOR 015\NIRE AXLE fiGLUE WHEEL WITH TITEROND model centered exactly just barely touched center disk top de scending Ed Whitten kept reminding flight just might beat 809 best time recorded time last 5 seconds seemed like eternity flight ticked final 8145 After completing flight con centrated flying EZB Ill never know time possible different motors can dream Nine 10 minutes probably well within capability ship under ceiling 100 feet higher Since NIMAS Record Trials other ships have built Cincinnati area fliers have achieving 6- 7-minute flights consistently Cincinnati Union Terminal ceiling 105 feet drift quite violent times convinced flying machine lets start building Construction ship built meet 4grain minimum weight indoor quality wood 5- 6-pound stock must used stripped LE AND YE 1/32 NO RIBS STE 1/4 FIN OFFSET LE TE NOOOVERING HERE 10 ALLOA STAB YE TORE ADJUSTEDUP DURBO FLYING /4WASH -IN 2ITYPI 4 SN4 * CONDENSOR PAPER COVERING E5 l2/4 d 2251/1650 lETS _w POWERI 21V2 LOOP _____ OBOPIRELLION BEAR B-B DIAFRONT VIEW 11/4SIZE SOAE BLADES IN ROILING WATER6flhGLUE WITHl/lBSH PPOP RICH JIG AND WRAP ON FORM LAIlLNOSE BLOCKTITEBONDSET AT 45 DRY3132 NO SPAR TAPERED1 AND ROUNDED 10 FIT l/32SH PROPELLER TUBE HUB BLADE ID REDO BALSA PLUG TISSUE TUBE HUB F JOFl BALSA- 015 WIRESHAFT MILLERS MANHATTAN MANHATTAN CABIN IOOFFE CAll OR SIMILAR DESIGNED BY JAMES MILLERPROPELLER BLADE FORMl/BSHl3rBPROP DI-BIW BR Bill BloncRard INTO SCALEINCHES IFFFF 012345 December1979 49 vvuocnin iu nuuii lowIy wending its way ceiling-ward geodetic structure fuse lage catches eyean excellent way com bining light weight maximum strength 00 N w 0 w w Co w -J -J Cd z -J 0 w N Cd -J -J U 1/16 sq 1/16 X 1/32 diagonals using metal ruler razor blade Jim Jones ABS stripper makes job easier strips uniform size have used Jims stripper subsequent models well worth investment interested send selfaddressed stamped envelope Jim Jones 36631 Ledgestone Mt Clemens MI 48043 will send latest price information geodetic configuration key light weight strength Although complicated appearance strength makes up addi tional building time Builders can use vertical uprights little sacrifice strength weight requirement build around rectangle 4 X 2 X 2 necessitates cracking longerons can narrow nose tail After completing fuselage cracks should coated generously glue No construction failures have experienced dont worry about weakness nose filled light 1/32 sheet provide strength area needed connecting fully wound motor prop assembly Use 1/16 OD aluminum tubing rear peg wind windingjig keep holes tubing goes through balsa wearing larger use 1/4 diameter circle 1/64 plywood reinforcement 1/64 ply wood available area soak balsa around holes Hot Stuff treatment wing posts landing gear plug tissue tubes made wrapping tissue around 1/16 diameter wire Fore readers fairly new indoor building few words might helpful making tissue tubes keep short four-inch piece 1/16 diameter piano wire building bench specifically rolling tissue tubes Make sure no burrs end has cut pliers smooth fine file important because must slip completed tube off wire dont want get caught end ruin work Cut some strips Japanese tissue about inch wide 3 inches long Put small bead glue wire about long Put end tissue strip bead begin spin wire slowly guide tissue strip wireThe tissue will push bead glue ahead will gradually use up Stop spinning wire keep some tension n strip Make another bead glue continue spinning wire After have approximately 5 complete turns stop spinning wire Blow gently outside glue joint get set Immediately push tube off wire before glue dries completely inside now have tube probably ragged end also some extra paper strip havent used Set aside dry roll rest tubes Dont get discouraged arent successful time usually ruin several roll After tubes have time dry trim off excess strip Carefully place tube back onthe wire Use sharp razor blade cut off about 1/16 edge tube tube wire wont crush trimming process now put light coat glue outside tube push off wire As soon dry may mount fuselage have some 1/16 diameter teflon tubing can leave tube teflon until dry push off Wing posts landing gear stmts made 1/16 sq balsa must rounded fit tubes short piece 1/16 ID tubing can useful stage Sand edges until posts look fairly round Force rounded strut tubing about Carefully pull out doesnt break off inside tubing Sand *600 sandpaper test fit tissue tube Take off extra balsa carefully until snug fit achieved gets little loose saliva will swell wood bit get snug fit Make sure condenser paper covering doped uprights tubes glued Afir initial flying adjustments have made small plugs glued bottom tubes assembling wing fuselage next flying session simply push wing posts down make contact plugs correct alignment automatic landing gear rather simple sturdy enough bear weight model landing gear stmt made fo hard 1/16 sq balsa Reinforce cracks good glue coat wheels cut bottom foam meat carton bearing 1/16 sq strip long drilled lengthwise 020 drill Without type equipment hole through small square 1/16 sheet balsa glued side wheel should well Use white glue wheel will dissolve small piece 015 wire hiued stmt acts axle wing stab rudder fancy Taper leading trailing edges wing 1/16 1/32 tips stab rudder outlines made 1/32 sq balsa Build rudder sit short uprights glued leading trailing edges stab Short pieces 1/32 used brace rudder keep upright wing stab rudder fancy Taper leading trailing edges wing 1/16 1/32 tips stab rudder outlines made 1/32 sq balsa Build rudder sit short uprights glued leading trailing edges stab Short pieces 1/32 used brace rudder keep upright important aspect getting fine performing ship finding best prop motor combination 12-in diameter 2250 Model Aviation Poised reach ceiling rest potent little cabin job sits stiity gear necessary clear windmill prop takeoff people have flown ship competitively ways skin cat hold airplane between flights Cross 5.nuuiu ruquuremwlt 4X2/2X2 box 4-gram minimum weight requires indoor quality wood 5- 6-lb stock in pitch propeller using 21 inch loop 080 Pirelli rubber wound 110 winder turns 16 1 correct combination may have experiment bit particularly rubber size used tear drop shape propeller since has performed well other ships have another shape like use Cut two propeller blanks same piece 1/32 sheet balsa Make sure blanks cut same side sheet grain both blades will similar Sand blade remove fuzz round edges blank necessary make prop paper thin down-thrust used final flying adjust ments little nose weight wont hurt 6- 8-in diameter can draw line inclines 150 left vertical line Soak two blades pan boiling water 10 minutes Place wet blades together line inclined left 150 Bind securely gauze cloth strips Let dry naturally may put oven bake 20 minutes about 2500 blades drying can work prop hub spars like use tissue tube hub pitch can changed needed Make hub using piece 3/32 OD wire tubing roll tissue Use same technique explained making tubes wing landing gear trimmed hub should 1 inch long Round piece 3/32 sq balsa 1/4-in long Insert plug inside tissue hub exactly center hub Carefully put drop glue end balsa plug Bend prop shaft 015 wire insert straight end wire over 900 angle Make sure prop shaft aligned forms 9Q0 angle hub Glue bent over portion shaft hub Re-coat joint make sure wont come loose prop spar formed 3/32 sq strip 3-1/4 inches long Taper spar 1/32 sq starting 1 inch end will go hub Round final inch will fit snugly tissue prop hub Lightly draw center line back side blade Using Titebond cement prevent warping glue final 2 inches spar center-line simple jig must constructed get blades desired 22-in pitch Use piece t balsa 3 se jig Draw reference line down center base Block hub reference line parallel base careful aligning prop shaft hub shaft will form 900 angle base Measure 3-1/2 inches out prop shaft Glue 450 angle cut 1/16 sheet perpendicular reference line Insert end prop shaft hub rotate blade until lies flat 450 angle curved side down Spot glue shaft hub use too much glue may want change pitch after test flying glue has dried turn hub around jig repeat process other blade now have 22-in pitch propeller point usually draw thin reference line hub prop shafts want change pitch later just loosen glue joint thinner twist shaft same amount same direction want make 20-in pitch prop glue 450 angle 3-1/64 inches prop shaft point few words about motors appropriate Most new fliers will fortunate have source Pirelli rubber have used FAI rubber Micro-X Hi Torque have satisfactory results dont have own rubber stripper send Micro-X Products Box 1063 Lorain OH 44055 will supply enough rubber sizes suit needs have flown model successfully rubber sizes 080 090 080 Pirelli produces little less torque slower prop doesnt have enough power air dense considerable drift average conditions 21in loop 085 Pirelli glves best results FAI Micro-X Hi Torque rubber 080 seems about right size since torque developed nose block original ship simply 3/4-in square piece hard balsa small reinforcing pieces 1/16 sheet front rear subsequent models noseblock shown photo plans has used permits change props just stick model Various props different diameters pitches can used varying conditions model has its own flight character istics following adjustments made get consistent smooth flights trailing edge stab raised 3/16 inch front rear wing posts however remained same length 1-1/4 inches handle initial Editors Note Since numerous competitiveevent types models existtoo reg ular publication first Manhattan published MAwe able publish promptly airplane accepted Jims record since surpassed Walt Van Gorder 913 flight Third NIMAS Trials using same wing tail rounded rudder outline wing stab airfoils similar Triolos influenced Jims design ap proack Walt used 23 1-in pitch prop 130 winder 161 turns 085 FAI rubber outline same Triolos Since Manhattan Official event Headquarters record listings kept it possible still higher time may exist before issue distributed December 1979 51 Miller turns 12 diameter 22-in pitch prop 21 loop 080 Pirelli wound 1750 turnS handle Initial torque washes left wing trailing edge /4 inch TISSUS TUDS waoe nuo permios piIn t wing TE washed about nose block configurationsee plans 1/4 inch 1/32 down-thrust also needed allows changing props stick model keep model porpoising latter stages flight adjustments produced steep climb beginning flight stalls will glad answer questions concerning building flying model increase postal rates 15 t please send selfaddressed stamped envelope 827 Yorkhaven Road Cincinnati OH 45240
Edition: Model Aviation - 1979/12
Page Numbers: 49, 50, 51
One enjoyable Indoor events Manhattan cabin Heres good -IVa 2~\ VLc\I Elm MiIler MANHATTAN Cabin Fever air 1976 Indoor Nationals held Columbus Ohio infected immediately letter Bob Larsh Central Indiana Aeromodellers CIA inviting participate Manhattan Cabin event annual contest really gave bug havent recovered since Since am expert aerodynamic theory studied John Triolos Nats winner designed ship wasnt too far winning combination After several trimming sessions 527 flight under 42-foot ceiling CIA contest gave first hint its true capabilities spring NIMAS Record Trials West Baden Indiana proved model winner 97-foot ceiling provided perfect opportunity pour winds motor let ship go out 21-in loop 080 Pirelli 103 winder turns 16 1 produced test flight 7219 same motor used after 20-minute rest 110 winder turns flight perfect WASH-IN AT LEFT flP l/1BSOWING POSTS ROUNDED TO FT TSSUE TUBES DOUBLE BE4ARW N TI-IRUST CELLOPHANE 3/lSSI-I NOSE BLOCK FiALL AROUND NOSE GHEERAL BREAK 1/3Dx1/l WING RIBS Il/325H STE K~J POSTS BELOW 0-IEDRAL BREAK 1/1R50 LE AND TIC TAPERED CELLOPHANEFRONT AND REAR OP FIN 1/4DIAl/B4 PLY ALL DINGONALS l/3251/16 OUBLER TISSUE TUBES/1SSOITYPOPPOSITE SDE SHOWN4 g MINIMUM WEIGHT DOTTED ______________________NO COVERING FERE NS 4S USE INDOOR DUALITY THIS PIECE AT5-BIb BALSA STE I-lARD 1/TRSO STRUTSTOP ONLY CUT WHEELS FROMI1/1SOF 1I4 WHEEL HUB FOAM MEAT TEATWITH 020 GA HOSE FOR 015\NIRE AXLE fiGLUE WHEEL WITH TITEROND model centered exactly just barely touched center disk top de scending Ed Whitten kept reminding flight just might beat 809 best time recorded time last 5 seconds seemed like eternity flight ticked final 8145 After completing flight con centrated flying EZB Ill never know time possible different motors can dream Nine 10 minutes probably well within capability ship under ceiling 100 feet higher Since NIMAS Record Trials other ships have built Cincinnati area fliers have achieving 6- 7-minute flights consistently Cincinnati Union Terminal ceiling 105 feet drift quite violent times convinced flying machine lets start building Construction ship built meet 4grain minimum weight indoor quality wood 5- 6-pound stock must used stripped LE AND YE 1/32 NO RIBS STE 1/4 FIN OFFSET LE TE NOOOVERING HERE 10 ALLOA STAB YE TORE ADJUSTEDUP DURBO FLYING /4WASH -IN 2ITYPI 4 SN4 * CONDENSOR PAPER COVERING E5 l2/4 d 2251/1650 lETS _w POWERI 21V2 LOOP _____ OBOPIRELLION BEAR B-B DIAFRONT VIEW 11/4SIZE SOAE BLADES IN ROILING WATER6flhGLUE WITHl/lBSH PPOP RICH JIG AND WRAP ON FORM LAIlLNOSE BLOCKTITEBONDSET AT 45 DRY3132 NO SPAR TAPERED1 AND ROUNDED 10 FIT l/32SH PROPELLER TUBE HUB BLADE ID REDO BALSA PLUG TISSUE TUBE HUB F JOFl BALSA- 015 WIRESHAFT MILLERS MANHATTAN MANHATTAN CABIN IOOFFE CAll OR SIMILAR DESIGNED BY JAMES MILLERPROPELLER BLADE FORMl/BSHl3rBPROP DI-BIW BR Bill BloncRard INTO SCALEINCHES IFFFF 012345 December1979 49 vvuocnin iu nuuii lowIy wending its way ceiling-ward geodetic structure fuse lage catches eyean excellent way com bining light weight maximum strength 00 N w 0 w w Co w -J -J Cd z -J 0 w N Cd -J -J U 1/16 sq 1/16 X 1/32 diagonals using metal ruler razor blade Jim Jones ABS stripper makes job easier strips uniform size have used Jims stripper subsequent models well worth investment interested send selfaddressed stamped envelope Jim Jones 36631 Ledgestone Mt Clemens MI 48043 will send latest price information geodetic configuration key light weight strength Although complicated appearance strength makes up addi tional building time Builders can use vertical uprights little sacrifice strength weight requirement build around rectangle 4 X 2 X 2 necessitates cracking longerons can narrow nose tail After completing fuselage cracks should coated generously glue No construction failures have experienced dont worry about weakness nose filled light 1/32 sheet provide strength area needed connecting fully wound motor prop assembly Use 1/16 OD aluminum tubing rear peg wind windingjig keep holes tubing goes through balsa wearing larger use 1/4 diameter circle 1/64 plywood reinforcement 1/64 ply wood available area soak balsa around holes Hot Stuff treatment wing posts landing gear plug tissue tubes made wrapping tissue around 1/16 diameter wire Fore readers fairly new indoor building few words might helpful making tissue tubes keep short four-inch piece 1/16 diameter piano wire building bench specifically rolling tissue tubes Make sure no burrs end has cut pliers smooth fine file important because must slip completed tube off wire dont want get caught end ruin work Cut some strips Japanese tissue about inch wide 3 inches long Put small bead glue wire about long Put end tissue strip bead begin spin wire slowly guide tissue strip wireThe tissue will push bead glue ahead will gradually use up Stop spinning wire keep some tension n strip Make another bead glue continue spinning wire After have approximately 5 complete turns stop spinning wire Blow gently outside glue joint get set Immediately push tube off wire before glue dries completely inside now have tube probably ragged end also some extra paper strip havent used Set aside dry roll rest tubes Dont get discouraged arent successful time usually ruin several roll After tubes have time dry trim off excess strip Carefully place tube back onthe wire Use sharp razor blade cut off about 1/16 edge tube tube wire wont crush trimming process now put light coat glue outside tube push off wire As soon dry may mount fuselage have some 1/16 diameter teflon tubing can leave tube teflon until dry push off Wing posts landing gear stmts made 1/16 sq balsa must rounded fit tubes short piece 1/16 ID tubing can useful stage Sand edges until posts look fairly round Force rounded strut tubing about Carefully pull out doesnt break off inside tubing Sand *600 sandpaper test fit tissue tube Take off extra balsa carefully until snug fit achieved gets little loose saliva will swell wood bit get snug fit Make sure condenser paper covering doped uprights tubes glued Afir initial flying adjustments have made small plugs glued bottom tubes assembling wing fuselage next flying session simply push wing posts down make contact plugs correct alignment automatic landing gear rather simple sturdy enough bear weight model landing gear stmt made fo hard 1/16 sq balsa Reinforce cracks good glue coat wheels cut bottom foam meat carton bearing 1/16 sq strip long drilled lengthwise 020 drill Without type equipment hole through small square 1/16 sheet balsa glued side wheel should well Use white glue wheel will dissolve small piece 015 wire hiued stmt acts axle wing stab rudder fancy Taper leading trailing edges wing 1/16 1/32 tips stab rudder outlines made 1/32 sq balsa Build rudder sit short uprights glued leading trailing edges stab Short pieces 1/32 used brace rudder keep upright wing stab rudder fancy Taper leading trailing edges wing 1/16 1/32 tips stab rudder outlines made 1/32 sq balsa Build rudder sit short uprights glued leading trailing edges stab Short pieces 1/32 used brace rudder keep upright important aspect getting fine performing ship finding best prop motor combination 12-in diameter 2250 Model Aviation Poised reach ceiling rest potent little cabin job sits stiity gear necessary clear windmill prop takeoff people have flown ship competitively ways skin cat hold airplane between flights Cross 5.nuuiu ruquuremwlt 4X2/2X2 box 4-gram minimum weight requires indoor quality wood 5- 6-lb stock in pitch propeller using 21 inch loop 080 Pirelli rubber wound 110 winder turns 16 1 correct combination may have experiment bit particularly rubber size used tear drop shape propeller since has performed well other ships have another shape like use Cut two propeller blanks same piece 1/32 sheet balsa Make sure blanks cut same side sheet grain both blades will similar Sand blade remove fuzz round edges blank necessary make prop paper thin down-thrust used final flying adjust ments little nose weight wont hurt 6- 8-in diameter can draw line inclines 150 left vertical line Soak two blades pan boiling water 10 minutes Place wet blades together line inclined left 150 Bind securely gauze cloth strips Let dry naturally may put oven bake 20 minutes about 2500 blades drying can work prop hub spars like use tissue tube hub pitch can changed needed Make hub using piece 3/32 OD wire tubing roll tissue Use same technique explained making tubes wing landing gear trimmed hub should 1 inch long Round piece 3/32 sq balsa 1/4-in long Insert plug inside tissue hub exactly center hub Carefully put drop glue end balsa plug Bend prop shaft 015 wire insert straight end wire over 900 angle Make sure prop shaft aligned forms 9Q0 angle hub Glue bent over portion shaft hub Re-coat joint make sure wont come loose prop spar formed 3/32 sq strip 3-1/4 inches long Taper spar 1/32 sq starting 1 inch end will go hub Round final inch will fit snugly tissue prop hub Lightly draw center line back side blade Using Titebond cement prevent warping glue final 2 inches spar center-line simple jig must constructed get blades desired 22-in pitch Use piece t balsa 3 se jig Draw reference line down center base Block hub reference line parallel base careful aligning prop shaft hub shaft will form 900 angle base Measure 3-1/2 inches out prop shaft Glue 450 angle cut 1/16 sheet perpendicular reference line Insert end prop shaft hub rotate blade until lies flat 450 angle curved side down Spot glue shaft hub use too much glue may want change pitch after test flying glue has dried turn hub around jig repeat process other blade now have 22-in pitch propeller point usually draw thin reference line hub prop shafts want change pitch later just loosen glue joint thinner twist shaft same amount same direction want make 20-in pitch prop glue 450 angle 3-1/64 inches prop shaft point few words about motors appropriate Most new fliers will fortunate have source Pirelli rubber have used FAI rubber Micro-X Hi Torque have satisfactory results dont have own rubber stripper send Micro-X Products Box 1063 Lorain OH 44055 will supply enough rubber sizes suit needs have flown model successfully rubber sizes 080 090 080 Pirelli produces little less torque slower prop doesnt have enough power air dense considerable drift average conditions 21in loop 085 Pirelli glves best results FAI Micro-X Hi Torque rubber 080 seems about right size since torque developed nose block original ship simply 3/4-in square piece hard balsa small reinforcing pieces 1/16 sheet front rear subsequent models noseblock shown photo plans has used permits change props just stick model Various props different diameters pitches can used varying conditions model has its own flight character istics following adjustments made get consistent smooth flights trailing edge stab raised 3/16 inch front rear wing posts however remained same length 1-1/4 inches handle initial Editors Note Since numerous competitiveevent types models existtoo reg ular publication first Manhattan published MAwe able publish promptly airplane accepted Jims record since surpassed Walt Van Gorder 913 flight Third NIMAS Trials using same wing tail rounded rudder outline wing stab airfoils similar Triolos influenced Jims design ap proack Walt used 23 1-in pitch prop 130 winder 161 turns 085 FAI rubber outline same Triolos Since Manhattan Official event Headquarters record listings kept it possible still higher time may exist before issue distributed December 1979 51 Miller turns 12 diameter 22-in pitch prop 21 loop 080 Pirelli wound 1750 turnS handle Initial torque washes left wing trailing edge /4 inch TISSUS TUDS waoe nuo permios piIn t wing TE washed about nose block configurationsee plans 1/4 inch 1/32 down-thrust also needed allows changing props stick model keep model porpoising latter stages flight adjustments produced steep climb beginning flight stalls will glad answer questions concerning building flying model increase postal rates 15 t please send selfaddressed stamped envelope 827 Yorkhaven Road Cincinnati OH 45240
Edition: Model Aviation - 1979/12
Page Numbers: 49, 50, 51
One enjoyable Indoor events Manhattan cabin Heres good -IVa 2~\ VLc\I Elm MiIler MANHATTAN Cabin Fever air 1976 Indoor Nationals held Columbus Ohio infected immediately letter Bob Larsh Central Indiana Aeromodellers CIA inviting participate Manhattan Cabin event annual contest really gave bug havent recovered since Since am expert aerodynamic theory studied John Triolos Nats winner designed ship wasnt too far winning combination After several trimming sessions 527 flight under 42-foot ceiling CIA contest gave first hint its true capabilities spring NIMAS Record Trials West Baden Indiana proved model winner 97-foot ceiling provided perfect opportunity pour winds motor let ship go out 21-in loop 080 Pirelli 103 winder turns 16 1 produced test flight 7219 same motor used after 20-minute rest 110 winder turns flight perfect WASH-IN AT LEFT flP l/1BSOWING POSTS ROUNDED TO FT TSSUE TUBES DOUBLE BE4ARW N TI-IRUST CELLOPHANE 3/lSSI-I NOSE BLOCK FiALL AROUND NOSE GHEERAL BREAK 1/3Dx1/l WING RIBS Il/325H STE K~J POSTS BELOW 0-IEDRAL BREAK 1/1R50 LE AND TIC TAPERED CELLOPHANEFRONT AND REAR OP FIN 1/4DIAl/B4 PLY ALL DINGONALS l/3251/16 OUBLER TISSUE TUBES/1SSOITYPOPPOSITE SDE SHOWN4 g MINIMUM WEIGHT DOTTED ______________________NO COVERING FERE NS 4S USE INDOOR DUALITY THIS PIECE AT5-BIb BALSA STE I-lARD 1/TRSO STRUTSTOP ONLY CUT WHEELS FROMI1/1SOF 1I4 WHEEL HUB FOAM MEAT TEATWITH 020 GA HOSE FOR 015\NIRE AXLE fiGLUE WHEEL WITH TITEROND model centered exactly just barely touched center disk top de scending Ed Whitten kept reminding flight just might beat 809 best time recorded time last 5 seconds seemed like eternity flight ticked final 8145 After completing flight con centrated flying EZB Ill never know time possible different motors can dream Nine 10 minutes probably well within capability ship under ceiling 100 feet higher Since NIMAS Record Trials other ships have built Cincinnati area fliers have achieving 6- 7-minute flights consistently Cincinnati Union Terminal ceiling 105 feet drift quite violent times convinced flying machine lets start building Construction ship built meet 4grain minimum weight indoor quality wood 5- 6-pound stock must used stripped LE AND YE 1/32 NO RIBS STE 1/4 FIN OFFSET LE TE NOOOVERING HERE 10 ALLOA STAB YE TORE ADJUSTEDUP DURBO FLYING /4WASH -IN 2ITYPI 4 SN4 * CONDENSOR PAPER COVERING E5 l2/4 d 2251/1650 lETS _w POWERI 21V2 LOOP _____ OBOPIRELLION BEAR B-B DIAFRONT VIEW 11/4SIZE SOAE BLADES IN ROILING WATER6flhGLUE WITHl/lBSH PPOP RICH JIG AND WRAP ON FORM LAIlLNOSE BLOCKTITEBONDSET AT 45 DRY3132 NO SPAR TAPERED1 AND ROUNDED 10 FIT l/32SH PROPELLER TUBE HUB BLADE ID REDO BALSA PLUG TISSUE TUBE HUB F JOFl BALSA- 015 WIRESHAFT MILLERS MANHATTAN MANHATTAN CABIN IOOFFE CAll OR SIMILAR DESIGNED BY JAMES MILLERPROPELLER BLADE FORMl/BSHl3rBPROP DI-BIW BR Bill BloncRard INTO SCALEINCHES IFFFF 012345 December1979 49 vvuocnin iu nuuii lowIy wending its way ceiling-ward geodetic structure fuse lage catches eyean excellent way com bining light weight maximum strength 00 N w 0 w w Co w -J -J Cd z -J 0 w N Cd -J -J U 1/16 sq 1/16 X 1/32 diagonals using metal ruler razor blade Jim Jones ABS stripper makes job easier strips uniform size have used Jims stripper subsequent models well worth investment interested send selfaddressed stamped envelope Jim Jones 36631 Ledgestone Mt Clemens MI 48043 will send latest price information geodetic configuration key light weight strength Although complicated appearance strength makes up addi tional building time Builders can use vertical uprights little sacrifice strength weight requirement build around rectangle 4 X 2 X 2 necessitates cracking longerons can narrow nose tail After completing fuselage cracks should coated generously glue No construction failures have experienced dont worry about weakness nose filled light 1/32 sheet provide strength area needed connecting fully wound motor prop assembly Use 1/16 OD aluminum tubing rear peg wind windingjig keep holes tubing goes through balsa wearing larger use 1/4 diameter circle 1/64 plywood reinforcement 1/64 ply wood available area soak balsa around holes Hot Stuff treatment wing posts landing gear plug tissue tubes made wrapping tissue around 1/16 diameter wire Fore readers fairly new indoor building few words might helpful making tissue tubes keep short four-inch piece 1/16 diameter piano wire building bench specifically rolling tissue tubes Make sure no burrs end has cut pliers smooth fine file important because must slip completed tube off wire dont want get caught end ruin work Cut some strips Japanese tissue about inch wide 3 inches long Put small bead glue wire about long Put end tissue strip bead begin spin wire slowly guide tissue strip wireThe tissue will push bead glue ahead will gradually use up Stop spinning wire keep some tension n strip Make another bead glue continue spinning wire After have approximately 5 complete turns stop spinning wire Blow gently outside glue joint get set Immediately push tube off wire before glue dries completely inside now have tube probably ragged end also some extra paper strip havent used Set aside dry roll rest tubes Dont get discouraged arent successful time usually ruin several roll After tubes have time dry trim off excess strip Carefully place tube back onthe wire Use sharp razor blade cut off about 1/16 edge tube tube wire wont crush trimming process now put light coat glue outside tube push off wire As soon dry may mount fuselage have some 1/16 diameter teflon tubing can leave tube teflon until dry push off Wing posts landing gear stmts made 1/16 sq balsa must rounded fit tubes short piece 1/16 ID tubing can useful stage Sand edges until posts look fairly round Force rounded strut tubing about Carefully pull out doesnt break off inside tubing Sand *600 sandpaper test fit tissue tube Take off extra balsa carefully until snug fit achieved gets little loose saliva will swell wood bit get snug fit Make sure condenser paper covering doped uprights tubes glued Afir initial flying adjustments have made small plugs glued bottom tubes assembling wing fuselage next flying session simply push wing posts down make contact plugs correct alignment automatic landing gear rather simple sturdy enough bear weight model landing gear stmt made fo hard 1/16 sq balsa Reinforce cracks good glue coat wheels cut bottom foam meat carton bearing 1/16 sq strip long drilled lengthwise 020 drill Without type equipment hole through small square 1/16 sheet balsa glued side wheel should well Use white glue wheel will dissolve small piece 015 wire hiued stmt acts axle wing stab rudder fancy Taper leading trailing edges wing 1/16 1/32 tips stab rudder outlines made 1/32 sq balsa Build rudder sit short uprights glued leading trailing edges stab Short pieces 1/32 used brace rudder keep upright wing stab rudder fancy Taper leading trailing edges wing 1/16 1/32 tips stab rudder outlines made 1/32 sq balsa Build rudder sit short uprights glued leading trailing edges stab Short pieces 1/32 used brace rudder keep upright important aspect getting fine performing ship finding best prop motor combination 12-in diameter 2250 Model Aviation Poised reach ceiling rest potent little cabin job sits stiity gear necessary clear windmill prop takeoff people have flown ship competitively ways skin cat hold airplane between flights Cross 5.nuuiu ruquuremwlt 4X2/2X2 box 4-gram minimum weight requires indoor quality wood 5- 6-lb stock in pitch propeller using 21 inch loop 080 Pirelli rubber wound 110 winder turns 16 1 correct combination may have experiment bit particularly rubber size used tear drop shape propeller since has performed well other ships have another shape like use Cut two propeller blanks same piece 1/32 sheet balsa Make sure blanks cut same side sheet grain both blades will similar Sand blade remove fuzz round edges blank necessary make prop paper thin down-thrust used final flying adjust ments little nose weight wont hurt 6- 8-in diameter can draw line inclines 150 left vertical line Soak two blades pan boiling water 10 minutes Place wet blades together line inclined left 150 Bind securely gauze cloth strips Let dry naturally may put oven bake 20 minutes about 2500 blades drying can work prop hub spars like use tissue tube hub pitch can changed needed Make hub using piece 3/32 OD wire tubing roll tissue Use same technique explained making tubes wing landing gear trimmed hub should 1 inch long Round piece 3/32 sq balsa 1/4-in long Insert plug inside tissue hub exactly center hub Carefully put drop glue end balsa plug Bend prop shaft 015 wire insert straight end wire over 900 angle Make sure prop shaft aligned forms 9Q0 angle hub Glue bent over portion shaft hub Re-coat joint make sure wont come loose prop spar formed 3/32 sq strip 3-1/4 inches long Taper spar 1/32 sq starting 1 inch end will go hub Round final inch will fit snugly tissue prop hub Lightly draw center line back side blade Using Titebond cement prevent warping glue final 2 inches spar center-line simple jig must constructed get blades desired 22-in pitch Use piece t balsa 3 se jig Draw reference line down center base Block hub reference line parallel base careful aligning prop shaft hub shaft will form 900 angle base Measure 3-1/2 inches out prop shaft Glue 450 angle cut 1/16 sheet perpendicular reference line Insert end prop shaft hub rotate blade until lies flat 450 angle curved side down Spot glue shaft hub use too much glue may want change pitch after test flying glue has dried turn hub around jig repeat process other blade now have 22-in pitch propeller point usually draw thin reference line hub prop shafts want change pitch later just loosen glue joint thinner twist shaft same amount same direction want make 20-in pitch prop glue 450 angle 3-1/64 inches prop shaft point few words about motors appropriate Most new fliers will fortunate have source Pirelli rubber have used FAI rubber Micro-X Hi Torque have satisfactory results dont have own rubber stripper send Micro-X Products Box 1063 Lorain OH 44055 will supply enough rubber sizes suit needs have flown model successfully rubber sizes 080 090 080 Pirelli produces little less torque slower prop doesnt have enough power air dense considerable drift average conditions 21in loop 085 Pirelli glves best results FAI Micro-X Hi Torque rubber 080 seems about right size since torque developed nose block original ship simply 3/4-in square piece hard balsa small reinforcing pieces 1/16 sheet front rear subsequent models noseblock shown photo plans has used permits change props just stick model Various props different diameters pitches can used varying conditions model has its own flight character istics following adjustments made get consistent smooth flights trailing edge stab raised 3/16 inch front rear wing posts however remained same length 1-1/4 inches handle initial Editors Note Since numerous competitiveevent types models existtoo reg ular publication first Manhattan published MAwe able publish promptly airplane accepted Jims record since surpassed Walt Van Gorder 913 flight Third NIMAS Trials using same wing tail rounded rudder outline wing stab airfoils similar Triolos influenced Jims design ap proack Walt used 23 1-in pitch prop 130 winder 161 turns 085 FAI rubber outline same Triolos Since Manhattan Official event Headquarters record listings kept it possible still higher time may exist before issue distributed December 1979 51 Miller turns 12 diameter 22-in pitch prop 21 loop 080 Pirelli wound 1750 turnS handle Initial torque washes left wing trailing edge /4 inch TISSUS TUDS waoe nuo permios piIn t wing TE washed about nose block configurationsee plans 1/4 inch 1/32 down-thrust also needed allows changing props stick model keep model porpoising latter stages flight adjustments produced steep climb beginning flight stalls will glad answer questions concerning building flying model increase postal rates 15 t please send selfaddressed stamped envelope 827 Yorkhaven Road Cincinnati OH 45240