WHAT IS P-3 Simply speaking Pastors third design very imagina tive name someone asks what wont get tongue-tied trying say P-3 P3 designed logical pro gression /2A pattern ship dont normally agree Detroit syndrome bigger better However case advantages justify changes power-to-weight ratio better flight will disaster engine running perfectly plenty room third servo rudder control means very few maneu vers cant done Knife-edge flight stall turns four-point rolls slow rolls within capabilities ship have larger radios still plenty room two chan nels Now too can get out show up pattern fliers model de signed use TD 09 never seen before specifications believed could swing 7 X 3 prop 17500 rpm ad dition weighed little over ounce TD 051 fuselage designed nar row possible around two-servo tray Ace Bantam KPS-12 servos made deep enough would sufficient room necessary link ages plenty room 4-ounce tank 500-mah battery pack forward wing radio installation wont have shoehorned very few motor mounts avail able TD 09 mount de signed integral part fuselage strengthens mount assures engine aligned properly never doubt mind wing going use Ace foam wing has impressed years Although semi-symmetrical performs almost like full-symmetrical airfoil under power yet permits beautiful slow glide full-stali landings ever dropping wing result has surpassed expec tations P-3 extremely stable model elevator ailerons very gentle around neutral yet react very fast pushed hard Perhaps amazing trait model its instanta neous response during quick maneuvers hand reaches out stops roll release stick no tendency turn during knife-edge flight stall turns clean un wanted roll have flown P-3 high U II Dave FL1 Pastor step up run-of-themill Half As Cox TD 09-powered job brings high order maneuverabil ity small airplane winds handled wind well much larger model engine quits transitions slightly nose-low fast glide assures good penetration tad backstick brings nose up easy slow landing warning want pass along model moving slowly engine stops slow glide imme diately established will moving too slow windmill prop horizontal position may result scraped prop during landing using op tional landing gear Construction will best start construction fuselage can jump wing waiting parts dry Since project experienced flier builder hope am going cover special features pertaining model some helpful hints Epoxy motor mount section together making sure Fl Ml M2 F2 square used hardwood block Cut block size shown draw ing used table saw assure cuts made square Cover block Saran Wrap tape pieces block dry square Use epoxy Next fit en gine allowing spinner clearance about 3/32 will Coat mount thin film epoxy before drilling blind nuts will help avoid chip ping careful few small chips nothing worry about since whole thing epoxied place may nec essary file edge blind nuts Ml extend beyond piece Install blind nuts time Assemble fuse lage sides unorthodox step cut /8 edge angular stock allows butt fit ply doubler fuselage stiffeners Use Titebond ev erything except ply doubler Use contact cement Study top view rear fuse lage Taper fuselage rear fits together drawing Next assemble F3A F3B will referred F3 Assemble fuselage sides unorthodox step cut ngular stock allows butt fit ply doubler fuselage stiffeners Use Titebond thing except ply doubler Use contact cement Study top view rear fuselage Taper fuselage rear fits together draw ing Next assemble F3A F3B will referred F3 After completing fuselage sides semble T2 F3 F4 will assure sides built square 24 Model Aviation other Pull fuselage together rear glue ends together below horizontal stabilizer slot Place piece 3/16 scrap between sides above stabilizer slot hold together clothespin Glue T3 place Keep clothespin place until vertical stabil izer installed later Trim vertical stabilizer cut-out fitted will seat horizoiital stabilizer Pull front fuselage together fit motor mount assembly fuselage sides may have sanded slightly triangular stock trimmed fit Epoxy motor mount assembly place using N 1 N2 assure alignment fuselage sides dry Nl N2 can trimmed engine shaft clearance Glue lower front 3/16 balsa attach Tl time opening necessary three reasons first fuel tank can trial fitted time will later installed through wing opening second will easier fuel proof hardto-get-to areas around motor mount Third after wing finished dowel locations can accurately marked through holes F3B rest fuselage completed normal con struction techniques assuring ver tical horizontal stabilizers aligned properly wing constructed using three sec tions Ace foam wingone constantchord two tapered sections Ace R/G may have wing kit available time published order 2T wing kit three 18-in sections ailing edge stock Ace local hobby shop Cut wing sections shown plans trailing edge straight plan cuts side normally use table saw plywood cutting blade cut foam wings Make cuts wing sections upside down top surface wing will flat three pieces epoxied together After epoxy has set trim back trailing edge 3/16 cut away center leading edge alsa Epoxy iece leading edge 1/8 sa strip trailing edge Sand flush wing surface Cut slot bottom spar using normal foam cutting techniquesa soldering gun appropriately bent piece brass tubing straightedge will nicely Titebond spar place balsa block used leading edge back spar cut out mount landing wheel Plans show optional gear Cut out foam necessary clear wheel 1/16 ply used balsa block wing trailing edge trailing edge stock cut center piece notched aileron linkage After fixed portions trailing edge place trial fit wing sure wing September 1977 25 fuselage designed narrow possible using KPS-12 Ace Bantam servos Plenty space forward 4-oz tank 500-mah battery pack shoehorn fit aileron servo mounted foam wing using servo tape Wing constructed Ace constant-chord two tapered foam panels Overhang fixed surfaces protects control surfaces should cartwheel airplane Craft capable knife-edge 4-point rolls stall turns slow rolls room add rudder servo Integral fuselage motor mount strong insures accurate align ment Author flies half-recessed belly wheel shown optional landing gear given plans want square~ fuselage 00 incidence mark dowel locations through opening top fuse lage Drill install dowels fit ailerons make servo cut-out Drill wing hold-down tap 10-32 nylon bolt Install tips after wing has covered use servo tape mount aileron servo con cerned about slight flexibility wing does impair flight perform ance plenty strong Complete construction model normal manner Cut out F3A F4 engine opening Fit canopy may have pinched fit nar row fuselage Install radio keeping CG position shown plans exceed control movements shown plans until ship has flown like faster response go try way first finished P-3 Solarfilm excellent material use bare foam wings shrinks relatively low tem perature iron will melt foam Also am partial Solarfilm hinges small models leaves no gap requires less work conventional hinges addition surfaces free moving servos will less work fuel tank best installed pulling position fuel lines packing foam around dyed canopy Rit dye dye mixed water canopy soaked until desired tint ac quired spinner Ace 1-5/16 spin ner can adapted easily First ream out hole back plate fit TD 09 hub Next open up screw hole fit 6-32 screw Also V4-in longer screw provided engine will needed spinner/nut supplied engine used space new spinner Trim nut until proper clearance obtained installing spinner first time tighten propeller back plate reverse back plate tighten again Finally tighten pro peller back plate will transfer hubs serrations pro peller back plate will assure secure assembly After engine broken approxi mately 30 minutes rich running controls checked ship ready fly Hand launches easy P-3 literally flies out hand no heart-stopping gyrations after launch P-3 inspires confidence Low altitude inverted passes easy habit forming Remember first stall turn will have /2A fliers side day may over before answer questions able fly again 26 Model Aviation assemble motor mount accurately cut hardwood block used jig block covered Saran Wrap after parts taped place epoxied unit Only four straight cuts using straightedge guid facilitate making sides corner pieces stiffeners doublers literally fall place Note keyed top center piece midportion fuselage accurately aligned can depend trueness firewall etc removing 1/8 edge corner stock butt-fit stiffeners doublers Modeling clamps perfect pulling sides together nose Note generous gluing area including motor mount attachment top nose piece Shaping match spinner easy TAILPLANESTRIPS F2-8 SHEET ------- 4I TVT\~J jjjjr Jii227 1LIZILJ- Trn Il i ELEVATORI6 SHEET_________ TOPd BOTTOM SECTION A-A TRIM 5B TRIA AS REDO FOR SERVOS 35RADIuSJF S F93LOCAEEF5 3/&TRIA SECTIONSHAPE38TRIAFRAMEWORK SO CUTS FROM TRAILING EDGE /4 FIXED TE NI L N2 I/B SHEET I/4PLY WOOD DRILL 8 INSTALL 4 40 M BLIND NUTS BEFORE MOUNTING IN MODEL COAT WITH EPOXY BEFORE DRILLING TO AVOID CHIPPING P2 I/B PLYWOOD USE TITEBOND FOR FOR SPAR WING IS BUILD FLAT UPSIDE DOWN 1/16 MUSIC WIRE IN BRASS TUBE BEARING\ II O CUTOUT 0 USE 4 HINGES2 I3/32H/32 PLYWOOD TOP 8 BOTTOM PER AILERON 1/4 3/4 T E STOCK C - -- F2 STEP ASSEMBLE Fl F2 MI B M2 KEEP EVERYTHING SOUARE MI M2 CUT BACK TE OF WING 3/16 -24 AILERON MOVEMENT COX TO 09 NI7 __________ -it rV Ii 1 [v32][b-1-10-1-10]] II = TRIANGLE N2CUT AWAY1 TO FIT T3 FUSELAGE TOP 8 SIDES I/BSHEET 7/, I/2TRIANGLE STOCK WIOOrrIp 10 OLJEDTV EPOXY WING SECTIONS TOGETHER ACE FOAM WING CONSTANT CHORD TAPERED SECTIONS w SKID 1/16 MUSIC WIRE K 2-j [IT I/aI4 1/2 —----y\3/16 SHEET 1/16 PLYWOOO-7-I/Bo 3/6 SPRUCEHINGES TOP VIEW IFWD/ F IAJ LAz o Wa VIEW- 3/32DA 075 MUSIC WIRE TRAP 4REO WING SPAR CENTER MODIFIED025 BRASS- FOR L GRETAIN WITH #2 x V4 SCREW r __ II II_____________ ______________ 3/16 [v32][b-2-10-1-10]] [v32][b-1-10-1-10]] L C-r UT RUDDER SLOT IN TOP TO HERE R4 R3 OUTLINE OF RI RI234 85 3/16SHEET R2 r CUT BACK SPINNER NUT FOR7 SIG CANOPYOUTLINE 1/16 PLYWOOD SPINNER TO PROP CLEARANCE RECEIVERIIIK I6 THIS EDGEI 6-32SCREW I/B SOFILLER BLOCKV4 PLYWOOD1/16 SHEET CROSSORAINCr WHEEL -PLYWOOD10-32 NYLON OPTIONAL SKID OPTIONAL L GSCREW FOR USE WITH LC KUSTOM KRAFTSMANSHIP RACING WHEELS.P3 - -iSTEP 2 ASSEMBLE FUSELAGE DESIGNED DRAWN TO T2 F3 8 P4TRACED FOR MODEL AVIATION BY MA F3 T2 --V P2 POWERTD 09 SPAN46 AREA250 50 IN WT25-270Z 0I23456 STEP 3 PULL SIDES TOGETHER USE 3/16 SPACER ABOVE ELEVATOR ONLY GLUE BELOW ELEVATOR GLUE T3 EPOXY MOTOR MOUNT ASSEMBLY CONTINUE NORMAL CONSTRUCTION CUT AWAY F3A 8 F4 AFTER FUSELAGE IS COMPLETED F3AF4 I/B SHEET VB PLYWOOD Y DAVID E PASTOR BORDEN FULL-SIZE PLANS AVAILABLESEE PAGE 96
Edition: Model Aviation - 1977/09
Page Numbers: 24, 25, 26, 27
WHAT IS P-3 Simply speaking Pastors third design very imagina tive name someone asks what wont get tongue-tied trying say P-3 P3 designed logical pro gression /2A pattern ship dont normally agree Detroit syndrome bigger better However case advantages justify changes power-to-weight ratio better flight will disaster engine running perfectly plenty room third servo rudder control means very few maneu vers cant done Knife-edge flight stall turns four-point rolls slow rolls within capabilities ship have larger radios still plenty room two chan nels Now too can get out show up pattern fliers model de signed use TD 09 never seen before specifications believed could swing 7 X 3 prop 17500 rpm ad dition weighed little over ounce TD 051 fuselage designed nar row possible around two-servo tray Ace Bantam KPS-12 servos made deep enough would sufficient room necessary link ages plenty room 4-ounce tank 500-mah battery pack forward wing radio installation wont have shoehorned very few motor mounts avail able TD 09 mount de signed integral part fuselage strengthens mount assures engine aligned properly never doubt mind wing going use Ace foam wing has impressed years Although semi-symmetrical performs almost like full-symmetrical airfoil under power yet permits beautiful slow glide full-stali landings ever dropping wing result has surpassed expec tations P-3 extremely stable model elevator ailerons very gentle around neutral yet react very fast pushed hard Perhaps amazing trait model its instanta neous response during quick maneuvers hand reaches out stops roll release stick no tendency turn during knife-edge flight stall turns clean un wanted roll have flown P-3 high U II Dave FL1 Pastor step up run-of-themill Half As Cox TD 09-powered job brings high order maneuverabil ity small airplane winds handled wind well much larger model engine quits transitions slightly nose-low fast glide assures good penetration tad backstick brings nose up easy slow landing warning want pass along model moving slowly engine stops slow glide imme diately established will moving too slow windmill prop horizontal position may result scraped prop during landing using op tional landing gear Construction will best start construction fuselage can jump wing waiting parts dry Since project experienced flier builder hope am going cover special features pertaining model some helpful hints Epoxy motor mount section together making sure Fl Ml M2 F2 square used hardwood block Cut block size shown draw ing used table saw assure cuts made square Cover block Saran Wrap tape pieces block dry square Use epoxy Next fit en gine allowing spinner clearance about 3/32 will Coat mount thin film epoxy before drilling blind nuts will help avoid chip ping careful few small chips nothing worry about since whole thing epoxied place may nec essary file edge blind nuts Ml extend beyond piece Install blind nuts time Assemble fuse lage sides unorthodox step cut /8 edge angular stock allows butt fit ply doubler fuselage stiffeners Use Titebond ev erything except ply doubler Use contact cement Study top view rear fuse lage Taper fuselage rear fits together drawing Next assemble F3A F3B will referred F3 Assemble fuselage sides unorthodox step cut ngular stock allows butt fit ply doubler fuselage stiffeners Use Titebond thing except ply doubler Use contact cement Study top view rear fuselage Taper fuselage rear fits together draw ing Next assemble F3A F3B will referred F3 After completing fuselage sides semble T2 F3 F4 will assure sides built square 24 Model Aviation other Pull fuselage together rear glue ends together below horizontal stabilizer slot Place piece 3/16 scrap between sides above stabilizer slot hold together clothespin Glue T3 place Keep clothespin place until vertical stabil izer installed later Trim vertical stabilizer cut-out fitted will seat horizoiital stabilizer Pull front fuselage together fit motor mount assembly fuselage sides may have sanded slightly triangular stock trimmed fit Epoxy motor mount assembly place using N 1 N2 assure alignment fuselage sides dry Nl N2 can trimmed engine shaft clearance Glue lower front 3/16 balsa attach Tl time opening necessary three reasons first fuel tank can trial fitted time will later installed through wing opening second will easier fuel proof hardto-get-to areas around motor mount Third after wing finished dowel locations can accurately marked through holes F3B rest fuselage completed normal con struction techniques assuring ver tical horizontal stabilizers aligned properly wing constructed using three sec tions Ace foam wingone constantchord two tapered sections Ace R/G may have wing kit available time published order 2T wing kit three 18-in sections ailing edge stock Ace local hobby shop Cut wing sections shown plans trailing edge straight plan cuts side normally use table saw plywood cutting blade cut foam wings Make cuts wing sections upside down top surface wing will flat three pieces epoxied together After epoxy has set trim back trailing edge 3/16 cut away center leading edge alsa Epoxy iece leading edge 1/8 sa strip trailing edge Sand flush wing surface Cut slot bottom spar using normal foam cutting techniquesa soldering gun appropriately bent piece brass tubing straightedge will nicely Titebond spar place balsa block used leading edge back spar cut out mount landing wheel Plans show optional gear Cut out foam necessary clear wheel 1/16 ply used balsa block wing trailing edge trailing edge stock cut center piece notched aileron linkage After fixed portions trailing edge place trial fit wing sure wing September 1977 25 fuselage designed narrow possible using KPS-12 Ace Bantam servos Plenty space forward 4-oz tank 500-mah battery pack shoehorn fit aileron servo mounted foam wing using servo tape Wing constructed Ace constant-chord two tapered foam panels Overhang fixed surfaces protects control surfaces should cartwheel airplane Craft capable knife-edge 4-point rolls stall turns slow rolls room add rudder servo Integral fuselage motor mount strong insures accurate align ment Author flies half-recessed belly wheel shown optional landing gear given plans want square~ fuselage 00 incidence mark dowel locations through opening top fuse lage Drill install dowels fit ailerons make servo cut-out Drill wing hold-down tap 10-32 nylon bolt Install tips after wing has covered use servo tape mount aileron servo con cerned about slight flexibility wing does impair flight perform ance plenty strong Complete construction model normal manner Cut out F3A F4 engine opening Fit canopy may have pinched fit nar row fuselage Install radio keeping CG position shown plans exceed control movements shown plans until ship has flown like faster response go try way first finished P-3 Solarfilm excellent material use bare foam wings shrinks relatively low tem perature iron will melt foam Also am partial Solarfilm hinges small models leaves no gap requires less work conventional hinges addition surfaces free moving servos will less work fuel tank best installed pulling position fuel lines packing foam around dyed canopy Rit dye dye mixed water canopy soaked until desired tint ac quired spinner Ace 1-5/16 spin ner can adapted easily First ream out hole back plate fit TD 09 hub Next open up screw hole fit 6-32 screw Also V4-in longer screw provided engine will needed spinner/nut supplied engine used space new spinner Trim nut until proper clearance obtained installing spinner first time tighten propeller back plate reverse back plate tighten again Finally tighten pro peller back plate will transfer hubs serrations pro peller back plate will assure secure assembly After engine broken approxi mately 30 minutes rich running controls checked ship ready fly Hand launches easy P-3 literally flies out hand no heart-stopping gyrations after launch P-3 inspires confidence Low altitude inverted passes easy habit forming Remember first stall turn will have /2A fliers side day may over before answer questions able fly again 26 Model Aviation assemble motor mount accurately cut hardwood block used jig block covered Saran Wrap after parts taped place epoxied unit Only four straight cuts using straightedge guid facilitate making sides corner pieces stiffeners doublers literally fall place Note keyed top center piece midportion fuselage accurately aligned can depend trueness firewall etc removing 1/8 edge corner stock butt-fit stiffeners doublers Modeling clamps perfect pulling sides together nose Note generous gluing area including motor mount attachment top nose piece Shaping match spinner easy TAILPLANESTRIPS F2-8 SHEET ------- 4I TVT\~J jjjjr Jii227 1LIZILJ- Trn Il i ELEVATORI6 SHEET_________ TOPd BOTTOM SECTION A-A TRIM 5B TRIA AS REDO FOR SERVOS 35RADIuSJF S F93LOCAEEF5 3/&TRIA SECTIONSHAPE38TRIAFRAMEWORK SO CUTS FROM TRAILING EDGE /4 FIXED TE NI L N2 I/B SHEET I/4PLY WOOD DRILL 8 INSTALL 4 40 M BLIND NUTS BEFORE MOUNTING IN MODEL COAT WITH EPOXY BEFORE DRILLING TO AVOID CHIPPING P2 I/B PLYWOOD USE TITEBOND FOR FOR SPAR WING IS BUILD FLAT UPSIDE DOWN 1/16 MUSIC WIRE IN BRASS TUBE BEARING\ II O CUTOUT 0 USE 4 HINGES2 I3/32H/32 PLYWOOD TOP 8 BOTTOM PER AILERON 1/4 3/4 T E STOCK C - -- F2 STEP ASSEMBLE Fl F2 MI B M2 KEEP EVERYTHING SOUARE MI M2 CUT BACK TE OF WING 3/16 -24 AILERON MOVEMENT COX TO 09 NI7 __________ -it rV Ii 1 [v32][b-1-10-1-10]] II = TRIANGLE N2CUT AWAY1 TO FIT T3 FUSELAGE TOP 8 SIDES I/BSHEET 7/, I/2TRIANGLE STOCK WIOOrrIp 10 OLJEDTV EPOXY WING SECTIONS TOGETHER ACE FOAM WING CONSTANT CHORD TAPERED SECTIONS w SKID 1/16 MUSIC WIRE K 2-j [IT I/aI4 1/2 —----y\3/16 SHEET 1/16 PLYWOOO-7-I/Bo 3/6 SPRUCEHINGES TOP VIEW IFWD/ F IAJ LAz o Wa VIEW- 3/32DA 075 MUSIC WIRE TRAP 4REO WING SPAR CENTER MODIFIED025 BRASS- FOR L GRETAIN WITH #2 x V4 SCREW r __ II II_____________ ______________ 3/16 [v32][b-2-10-1-10]] [v32][b-1-10-1-10]] L C-r UT RUDDER SLOT IN TOP TO HERE R4 R3 OUTLINE OF RI RI234 85 3/16SHEET R2 r CUT BACK SPINNER NUT FOR7 SIG CANOPYOUTLINE 1/16 PLYWOOD SPINNER TO PROP CLEARANCE RECEIVERIIIK I6 THIS EDGEI 6-32SCREW I/B SOFILLER BLOCKV4 PLYWOOD1/16 SHEET CROSSORAINCr WHEEL -PLYWOOD10-32 NYLON OPTIONAL SKID OPTIONAL L GSCREW FOR USE WITH LC KUSTOM KRAFTSMANSHIP RACING WHEELS.P3 - -iSTEP 2 ASSEMBLE FUSELAGE DESIGNED DRAWN TO T2 F3 8 P4TRACED FOR MODEL AVIATION BY MA F3 T2 --V P2 POWERTD 09 SPAN46 AREA250 50 IN WT25-270Z 0I23456 STEP 3 PULL SIDES TOGETHER USE 3/16 SPACER ABOVE ELEVATOR ONLY GLUE BELOW ELEVATOR GLUE T3 EPOXY MOTOR MOUNT ASSEMBLY CONTINUE NORMAL CONSTRUCTION CUT AWAY F3A 8 F4 AFTER FUSELAGE IS COMPLETED F3AF4 I/B SHEET VB PLYWOOD Y DAVID E PASTOR BORDEN FULL-SIZE PLANS AVAILABLESEE PAGE 96
Edition: Model Aviation - 1977/09
Page Numbers: 24, 25, 26, 27
WHAT IS P-3 Simply speaking Pastors third design very imagina tive name someone asks what wont get tongue-tied trying say P-3 P3 designed logical pro gression /2A pattern ship dont normally agree Detroit syndrome bigger better However case advantages justify changes power-to-weight ratio better flight will disaster engine running perfectly plenty room third servo rudder control means very few maneu vers cant done Knife-edge flight stall turns four-point rolls slow rolls within capabilities ship have larger radios still plenty room two chan nels Now too can get out show up pattern fliers model de signed use TD 09 never seen before specifications believed could swing 7 X 3 prop 17500 rpm ad dition weighed little over ounce TD 051 fuselage designed nar row possible around two-servo tray Ace Bantam KPS-12 servos made deep enough would sufficient room necessary link ages plenty room 4-ounce tank 500-mah battery pack forward wing radio installation wont have shoehorned very few motor mounts avail able TD 09 mount de signed integral part fuselage strengthens mount assures engine aligned properly never doubt mind wing going use Ace foam wing has impressed years Although semi-symmetrical performs almost like full-symmetrical airfoil under power yet permits beautiful slow glide full-stali landings ever dropping wing result has surpassed expec tations P-3 extremely stable model elevator ailerons very gentle around neutral yet react very fast pushed hard Perhaps amazing trait model its instanta neous response during quick maneuvers hand reaches out stops roll release stick no tendency turn during knife-edge flight stall turns clean un wanted roll have flown P-3 high U II Dave FL1 Pastor step up run-of-themill Half As Cox TD 09-powered job brings high order maneuverabil ity small airplane winds handled wind well much larger model engine quits transitions slightly nose-low fast glide assures good penetration tad backstick brings nose up easy slow landing warning want pass along model moving slowly engine stops slow glide imme diately established will moving too slow windmill prop horizontal position may result scraped prop during landing using op tional landing gear Construction will best start construction fuselage can jump wing waiting parts dry Since project experienced flier builder hope am going cover special features pertaining model some helpful hints Epoxy motor mount section together making sure Fl Ml M2 F2 square used hardwood block Cut block size shown draw ing used table saw assure cuts made square Cover block Saran Wrap tape pieces block dry square Use epoxy Next fit en gine allowing spinner clearance about 3/32 will Coat mount thin film epoxy before drilling blind nuts will help avoid chip ping careful few small chips nothing worry about since whole thing epoxied place may nec essary file edge blind nuts Ml extend beyond piece Install blind nuts time Assemble fuse lage sides unorthodox step cut /8 edge angular stock allows butt fit ply doubler fuselage stiffeners Use Titebond ev erything except ply doubler Use contact cement Study top view rear fuse lage Taper fuselage rear fits together drawing Next assemble F3A F3B will referred F3 Assemble fuselage sides unorthodox step cut ngular stock allows butt fit ply doubler fuselage stiffeners Use Titebond thing except ply doubler Use contact cement Study top view rear fuselage Taper fuselage rear fits together draw ing Next assemble F3A F3B will referred F3 After completing fuselage sides semble T2 F3 F4 will assure sides built square 24 Model Aviation other Pull fuselage together rear glue ends together below horizontal stabilizer slot Place piece 3/16 scrap between sides above stabilizer slot hold together clothespin Glue T3 place Keep clothespin place until vertical stabil izer installed later Trim vertical stabilizer cut-out fitted will seat horizoiital stabilizer Pull front fuselage together fit motor mount assembly fuselage sides may have sanded slightly triangular stock trimmed fit Epoxy motor mount assembly place using N 1 N2 assure alignment fuselage sides dry Nl N2 can trimmed engine shaft clearance Glue lower front 3/16 balsa attach Tl time opening necessary three reasons first fuel tank can trial fitted time will later installed through wing opening second will easier fuel proof hardto-get-to areas around motor mount Third after wing finished dowel locations can accurately marked through holes F3B rest fuselage completed normal con struction techniques assuring ver tical horizontal stabilizers aligned properly wing constructed using three sec tions Ace foam wingone constantchord two tapered sections Ace R/G may have wing kit available time published order 2T wing kit three 18-in sections ailing edge stock Ace local hobby shop Cut wing sections shown plans trailing edge straight plan cuts side normally use table saw plywood cutting blade cut foam wings Make cuts wing sections upside down top surface wing will flat three pieces epoxied together After epoxy has set trim back trailing edge 3/16 cut away center leading edge alsa Epoxy iece leading edge 1/8 sa strip trailing edge Sand flush wing surface Cut slot bottom spar using normal foam cutting techniquesa soldering gun appropriately bent piece brass tubing straightedge will nicely Titebond spar place balsa block used leading edge back spar cut out mount landing wheel Plans show optional gear Cut out foam necessary clear wheel 1/16 ply used balsa block wing trailing edge trailing edge stock cut center piece notched aileron linkage After fixed portions trailing edge place trial fit wing sure wing September 1977 25 fuselage designed narrow possible using KPS-12 Ace Bantam servos Plenty space forward 4-oz tank 500-mah battery pack shoehorn fit aileron servo mounted foam wing using servo tape Wing constructed Ace constant-chord two tapered foam panels Overhang fixed surfaces protects control surfaces should cartwheel airplane Craft capable knife-edge 4-point rolls stall turns slow rolls room add rudder servo Integral fuselage motor mount strong insures accurate align ment Author flies half-recessed belly wheel shown optional landing gear given plans want square~ fuselage 00 incidence mark dowel locations through opening top fuse lage Drill install dowels fit ailerons make servo cut-out Drill wing hold-down tap 10-32 nylon bolt Install tips after wing has covered use servo tape mount aileron servo con cerned about slight flexibility wing does impair flight perform ance plenty strong Complete construction model normal manner Cut out F3A F4 engine opening Fit canopy may have pinched fit nar row fuselage Install radio keeping CG position shown plans exceed control movements shown plans until ship has flown like faster response go try way first finished P-3 Solarfilm excellent material use bare foam wings shrinks relatively low tem perature iron will melt foam Also am partial Solarfilm hinges small models leaves no gap requires less work conventional hinges addition surfaces free moving servos will less work fuel tank best installed pulling position fuel lines packing foam around dyed canopy Rit dye dye mixed water canopy soaked until desired tint ac quired spinner Ace 1-5/16 spin ner can adapted easily First ream out hole back plate fit TD 09 hub Next open up screw hole fit 6-32 screw Also V4-in longer screw provided engine will needed spinner/nut supplied engine used space new spinner Trim nut until proper clearance obtained installing spinner first time tighten propeller back plate reverse back plate tighten again Finally tighten pro peller back plate will transfer hubs serrations pro peller back plate will assure secure assembly After engine broken approxi mately 30 minutes rich running controls checked ship ready fly Hand launches easy P-3 literally flies out hand no heart-stopping gyrations after launch P-3 inspires confidence Low altitude inverted passes easy habit forming Remember first stall turn will have /2A fliers side day may over before answer questions able fly again 26 Model Aviation assemble motor mount accurately cut hardwood block used jig block covered Saran Wrap after parts taped place epoxied unit Only four straight cuts using straightedge guid facilitate making sides corner pieces stiffeners doublers literally fall place Note keyed top center piece midportion fuselage accurately aligned can depend trueness firewall etc removing 1/8 edge corner stock butt-fit stiffeners doublers Modeling clamps perfect pulling sides together nose Note generous gluing area including motor mount attachment top nose piece Shaping match spinner easy TAILPLANESTRIPS F2-8 SHEET ------- 4I TVT\~J jjjjr Jii227 1LIZILJ- Trn Il i ELEVATORI6 SHEET_________ TOPd BOTTOM SECTION A-A TRIM 5B TRIA AS REDO FOR SERVOS 35RADIuSJF S F93LOCAEEF5 3/&TRIA SECTIONSHAPE38TRIAFRAMEWORK SO CUTS FROM TRAILING EDGE /4 FIXED TE NI L N2 I/B SHEET I/4PLY WOOD DRILL 8 INSTALL 4 40 M BLIND NUTS BEFORE MOUNTING IN MODEL COAT WITH EPOXY BEFORE DRILLING TO AVOID CHIPPING P2 I/B PLYWOOD USE TITEBOND FOR FOR SPAR WING IS BUILD FLAT UPSIDE DOWN 1/16 MUSIC WIRE IN BRASS TUBE BEARING\ II O CUTOUT 0 USE 4 HINGES2 I3/32H/32 PLYWOOD TOP 8 BOTTOM PER AILERON 1/4 3/4 T E STOCK C - -- F2 STEP ASSEMBLE Fl F2 MI B M2 KEEP EVERYTHING SOUARE MI M2 CUT BACK TE OF WING 3/16 -24 AILERON MOVEMENT COX TO 09 NI7 __________ -it rV Ii 1 [v32][b-1-10-1-10]] II = TRIANGLE N2CUT AWAY1 TO FIT T3 FUSELAGE TOP 8 SIDES I/BSHEET 7/, I/2TRIANGLE STOCK WIOOrrIp 10 OLJEDTV EPOXY WING SECTIONS TOGETHER ACE FOAM WING CONSTANT CHORD TAPERED SECTIONS w SKID 1/16 MUSIC WIRE K 2-j [IT I/aI4 1/2 —----y\3/16 SHEET 1/16 PLYWOOO-7-I/Bo 3/6 SPRUCEHINGES TOP VIEW IFWD/ F IAJ LAz o Wa VIEW- 3/32DA 075 MUSIC WIRE TRAP 4REO WING SPAR CENTER MODIFIED025 BRASS- FOR L GRETAIN WITH #2 x V4 SCREW r __ II II_____________ ______________ 3/16 [v32][b-2-10-1-10]] [v32][b-1-10-1-10]] L C-r UT RUDDER SLOT IN TOP TO HERE R4 R3 OUTLINE OF RI RI234 85 3/16SHEET R2 r CUT BACK SPINNER NUT FOR7 SIG CANOPYOUTLINE 1/16 PLYWOOD SPINNER TO PROP CLEARANCE RECEIVERIIIK I6 THIS EDGEI 6-32SCREW I/B SOFILLER BLOCKV4 PLYWOOD1/16 SHEET CROSSORAINCr WHEEL -PLYWOOD10-32 NYLON OPTIONAL SKID OPTIONAL L GSCREW FOR USE WITH LC KUSTOM KRAFTSMANSHIP RACING WHEELS.P3 - -iSTEP 2 ASSEMBLE FUSELAGE DESIGNED DRAWN TO T2 F3 8 P4TRACED FOR MODEL AVIATION BY MA F3 T2 --V P2 POWERTD 09 SPAN46 AREA250 50 IN WT25-270Z 0I23456 STEP 3 PULL SIDES TOGETHER USE 3/16 SPACER ABOVE ELEVATOR ONLY GLUE BELOW ELEVATOR GLUE T3 EPOXY MOTOR MOUNT ASSEMBLY CONTINUE NORMAL CONSTRUCTION CUT AWAY F3A 8 F4 AFTER FUSELAGE IS COMPLETED F3AF4 I/B SHEET VB PLYWOOD Y DAVID E PASTOR BORDEN FULL-SIZE PLANS AVAILABLESEE PAGE 96
Edition: Model Aviation - 1977/09
Page Numbers: 24, 25, 26, 27
WHAT IS P-3 Simply speaking Pastors third design very imagina tive name someone asks what wont get tongue-tied trying say P-3 P3 designed logical pro gression /2A pattern ship dont normally agree Detroit syndrome bigger better However case advantages justify changes power-to-weight ratio better flight will disaster engine running perfectly plenty room third servo rudder control means very few maneu vers cant done Knife-edge flight stall turns four-point rolls slow rolls within capabilities ship have larger radios still plenty room two chan nels Now too can get out show up pattern fliers model de signed use TD 09 never seen before specifications believed could swing 7 X 3 prop 17500 rpm ad dition weighed little over ounce TD 051 fuselage designed nar row possible around two-servo tray Ace Bantam KPS-12 servos made deep enough would sufficient room necessary link ages plenty room 4-ounce tank 500-mah battery pack forward wing radio installation wont have shoehorned very few motor mounts avail able TD 09 mount de signed integral part fuselage strengthens mount assures engine aligned properly never doubt mind wing going use Ace foam wing has impressed years Although semi-symmetrical performs almost like full-symmetrical airfoil under power yet permits beautiful slow glide full-stali landings ever dropping wing result has surpassed expec tations P-3 extremely stable model elevator ailerons very gentle around neutral yet react very fast pushed hard Perhaps amazing trait model its instanta neous response during quick maneuvers hand reaches out stops roll release stick no tendency turn during knife-edge flight stall turns clean un wanted roll have flown P-3 high U II Dave FL1 Pastor step up run-of-themill Half As Cox TD 09-powered job brings high order maneuverabil ity small airplane winds handled wind well much larger model engine quits transitions slightly nose-low fast glide assures good penetration tad backstick brings nose up easy slow landing warning want pass along model moving slowly engine stops slow glide imme diately established will moving too slow windmill prop horizontal position may result scraped prop during landing using op tional landing gear Construction will best start construction fuselage can jump wing waiting parts dry Since project experienced flier builder hope am going cover special features pertaining model some helpful hints Epoxy motor mount section together making sure Fl Ml M2 F2 square used hardwood block Cut block size shown draw ing used table saw assure cuts made square Cover block Saran Wrap tape pieces block dry square Use epoxy Next fit en gine allowing spinner clearance about 3/32 will Coat mount thin film epoxy before drilling blind nuts will help avoid chip ping careful few small chips nothing worry about since whole thing epoxied place may nec essary file edge blind nuts Ml extend beyond piece Install blind nuts time Assemble fuse lage sides unorthodox step cut /8 edge angular stock allows butt fit ply doubler fuselage stiffeners Use Titebond ev erything except ply doubler Use contact cement Study top view rear fuse lage Taper fuselage rear fits together drawing Next assemble F3A F3B will referred F3 Assemble fuselage sides unorthodox step cut ngular stock allows butt fit ply doubler fuselage stiffeners Use Titebond thing except ply doubler Use contact cement Study top view rear fuselage Taper fuselage rear fits together draw ing Next assemble F3A F3B will referred F3 After completing fuselage sides semble T2 F3 F4 will assure sides built square 24 Model Aviation other Pull fuselage together rear glue ends together below horizontal stabilizer slot Place piece 3/16 scrap between sides above stabilizer slot hold together clothespin Glue T3 place Keep clothespin place until vertical stabil izer installed later Trim vertical stabilizer cut-out fitted will seat horizoiital stabilizer Pull front fuselage together fit motor mount assembly fuselage sides may have sanded slightly triangular stock trimmed fit Epoxy motor mount assembly place using N 1 N2 assure alignment fuselage sides dry Nl N2 can trimmed engine shaft clearance Glue lower front 3/16 balsa attach Tl time opening necessary three reasons first fuel tank can trial fitted time will later installed through wing opening second will easier fuel proof hardto-get-to areas around motor mount Third after wing finished dowel locations can accurately marked through holes F3B rest fuselage completed normal con struction techniques assuring ver tical horizontal stabilizers aligned properly wing constructed using three sec tions Ace foam wingone constantchord two tapered sections Ace R/G may have wing kit available time published order 2T wing kit three 18-in sections ailing edge stock Ace local hobby shop Cut wing sections shown plans trailing edge straight plan cuts side normally use table saw plywood cutting blade cut foam wings Make cuts wing sections upside down top surface wing will flat three pieces epoxied together After epoxy has set trim back trailing edge 3/16 cut away center leading edge alsa Epoxy iece leading edge 1/8 sa strip trailing edge Sand flush wing surface Cut slot bottom spar using normal foam cutting techniquesa soldering gun appropriately bent piece brass tubing straightedge will nicely Titebond spar place balsa block used leading edge back spar cut out mount landing wheel Plans show optional gear Cut out foam necessary clear wheel 1/16 ply used balsa block wing trailing edge trailing edge stock cut center piece notched aileron linkage After fixed portions trailing edge place trial fit wing sure wing September 1977 25 fuselage designed narrow possible using KPS-12 Ace Bantam servos Plenty space forward 4-oz tank 500-mah battery pack shoehorn fit aileron servo mounted foam wing using servo tape Wing constructed Ace constant-chord two tapered foam panels Overhang fixed surfaces protects control surfaces should cartwheel airplane Craft capable knife-edge 4-point rolls stall turns slow rolls room add rudder servo Integral fuselage motor mount strong insures accurate align ment Author flies half-recessed belly wheel shown optional landing gear given plans want square~ fuselage 00 incidence mark dowel locations through opening top fuse lage Drill install dowels fit ailerons make servo cut-out Drill wing hold-down tap 10-32 nylon bolt Install tips after wing has covered use servo tape mount aileron servo con cerned about slight flexibility wing does impair flight perform ance plenty strong Complete construction model normal manner Cut out F3A F4 engine opening Fit canopy may have pinched fit nar row fuselage Install radio keeping CG position shown plans exceed control movements shown plans until ship has flown like faster response go try way first finished P-3 Solarfilm excellent material use bare foam wings shrinks relatively low tem perature iron will melt foam Also am partial Solarfilm hinges small models leaves no gap requires less work conventional hinges addition surfaces free moving servos will less work fuel tank best installed pulling position fuel lines packing foam around dyed canopy Rit dye dye mixed water canopy soaked until desired tint ac quired spinner Ace 1-5/16 spin ner can adapted easily First ream out hole back plate fit TD 09 hub Next open up screw hole fit 6-32 screw Also V4-in longer screw provided engine will needed spinner/nut supplied engine used space new spinner Trim nut until proper clearance obtained installing spinner first time tighten propeller back plate reverse back plate tighten again Finally tighten pro peller back plate will transfer hubs serrations pro peller back plate will assure secure assembly After engine broken approxi mately 30 minutes rich running controls checked ship ready fly Hand launches easy P-3 literally flies out hand no heart-stopping gyrations after launch P-3 inspires confidence Low altitude inverted passes easy habit forming Remember first stall turn will have /2A fliers side day may over before answer questions able fly again 26 Model Aviation assemble motor mount accurately cut hardwood block used jig block covered Saran Wrap after parts taped place epoxied unit Only four straight cuts using straightedge guid facilitate making sides corner pieces stiffeners doublers literally fall place Note keyed top center piece midportion fuselage accurately aligned can depend trueness firewall etc removing 1/8 edge corner stock butt-fit stiffeners doublers Modeling clamps perfect pulling sides together nose Note generous gluing area including motor mount attachment top nose piece Shaping match spinner easy TAILPLANESTRIPS F2-8 SHEET ------- 4I TVT\~J jjjjr Jii227 1LIZILJ- Trn Il i ELEVATORI6 SHEET_________ TOPd BOTTOM SECTION A-A TRIM 5B TRIA AS REDO FOR SERVOS 35RADIuSJF S F93LOCAEEF5 3/&TRIA SECTIONSHAPE38TRIAFRAMEWORK SO CUTS FROM TRAILING EDGE /4 FIXED TE NI L N2 I/B SHEET I/4PLY WOOD DRILL 8 INSTALL 4 40 M BLIND NUTS BEFORE MOUNTING IN MODEL COAT WITH EPOXY BEFORE DRILLING TO AVOID CHIPPING P2 I/B PLYWOOD USE TITEBOND FOR FOR SPAR WING IS BUILD FLAT UPSIDE DOWN 1/16 MUSIC WIRE IN BRASS TUBE BEARING\ II O CUTOUT 0 USE 4 HINGES2 I3/32H/32 PLYWOOD TOP 8 BOTTOM PER AILERON 1/4 3/4 T E STOCK C - -- F2 STEP ASSEMBLE Fl F2 MI B M2 KEEP EVERYTHING SOUARE MI M2 CUT BACK TE OF WING 3/16 -24 AILERON MOVEMENT COX TO 09 NI7 __________ -it rV Ii 1 [v32][b-1-10-1-10]] II = TRIANGLE N2CUT AWAY1 TO FIT T3 FUSELAGE TOP 8 SIDES I/BSHEET 7/, I/2TRIANGLE STOCK WIOOrrIp 10 OLJEDTV EPOXY WING SECTIONS TOGETHER ACE FOAM WING CONSTANT CHORD TAPERED SECTIONS w SKID 1/16 MUSIC WIRE K 2-j [IT I/aI4 1/2 —----y\3/16 SHEET 1/16 PLYWOOO-7-I/Bo 3/6 SPRUCEHINGES TOP VIEW IFWD/ F IAJ LAz o Wa VIEW- 3/32DA 075 MUSIC WIRE TRAP 4REO WING SPAR CENTER MODIFIED025 BRASS- FOR L GRETAIN WITH #2 x V4 SCREW r __ II II_____________ ______________ 3/16 [v32][b-2-10-1-10]] [v32][b-1-10-1-10]] L C-r UT RUDDER SLOT IN TOP TO HERE R4 R3 OUTLINE OF RI RI234 85 3/16SHEET R2 r CUT BACK SPINNER NUT FOR7 SIG CANOPYOUTLINE 1/16 PLYWOOD SPINNER TO PROP CLEARANCE RECEIVERIIIK I6 THIS EDGEI 6-32SCREW I/B SOFILLER BLOCKV4 PLYWOOD1/16 SHEET CROSSORAINCr WHEEL -PLYWOOD10-32 NYLON OPTIONAL SKID OPTIONAL L GSCREW FOR USE WITH LC KUSTOM KRAFTSMANSHIP RACING WHEELS.P3 - -iSTEP 2 ASSEMBLE FUSELAGE DESIGNED DRAWN TO T2 F3 8 P4TRACED FOR MODEL AVIATION BY MA F3 T2 --V P2 POWERTD 09 SPAN46 AREA250 50 IN WT25-270Z 0I23456 STEP 3 PULL SIDES TOGETHER USE 3/16 SPACER ABOVE ELEVATOR ONLY GLUE BELOW ELEVATOR GLUE T3 EPOXY MOTOR MOUNT ASSEMBLY CONTINUE NORMAL CONSTRUCTION CUT AWAY F3A 8 F4 AFTER FUSELAGE IS COMPLETED F3AF4 I/B SHEET VB PLYWOOD Y DAVID E PASTOR BORDEN FULL-SIZE PLANS AVAILABLESEE PAGE 96