I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
Edition: Model Aviation - 1976/11
Page Numbers: 38, 39, 40, 41, 42, 43, 44, 95
I P000 youd like break free look-alike kits Formula RC Pylon job best ever article recommended reading Pylon devotees Harold deBolt John Grigg Lockport NY Pogo con structed plans prior publicationit con firmed superb performance Design model Closely follows full-scale racer highly successful series George Owl Streamlining features carefully worked Out Owl duplicated model IT HAS BEEN awhile since have come forth Formula design after year effort now have new ex citing know yet whether will break records am certain Pogo different approach Formula boasting new features interesting comparatively superior say least believe effort worth reward satisfaction Pogo has brought As modeler another think would happy Pogo too outstanding problems modeling tendency drift ruts far design concerned us winding up building flying very similar aircraft example look other RC events control-line free-flight least Formula have op portunity build unique aircraft still remain equal basis aircraft-wise However lately find courses clut tered more look-alikes detract vast potential ex citing sport Probably causes fact Formula now old enough well-known type planes have weeded out sub stantiated leading experts flown reflown hilt average modeler tends follow experts footsteps also building flying same models over over again hope attain winners circle himself someday well good doing loses aspect importance himself individuality. rmina tion speculate persevere conquer new horizons guess could say cooling air intakes simulated bywhat need new blood form paint job nose well rounded andfull-scale racers base designs smooth intake models engine being vertical opening visible just below good years no spinner Wheel pants thin possiblefull-scale racers being built raced 38 Model Aviation Pogos sleekness emphasized photo Points note carefully streamlined canopy-fuselage junctionnote highlighted line fuselageand straight taper nose way back tail surfaces Owl enclosed engine fuselage avoid ed higher drag usual cheek cowl older racers filling need However past few years several newly designed racers developed pleasing look fortunately model racers possessing excellent potential Among series related designs George Owl have very success ful full-scale racing designs show sound knowledge basic aerody namics added flair gives greater performance Such ideal com bination makes winner field Although Owl designs use same fundamental solid aerodynamic layout find different because individual ingenious ideas design prin ciple used effort build better mousetrap thus go faster search new model design liked what saw Owl racers problem being choose Prob ably before run course phase shall wind up giving try start chose Owls first series simply cause fit models very easily addi tion used old idea streamlining has proven over over again much change can done wing tail beyond what normally have now comes fuselage different story Pogo George went back basics other designers overlook layouts three fundamentals streamlining smoothness line cleanliness no bumps protrusions minimum wetted area amount surface exposed George Owl did utmost accomplish goals statistics have proven Pogo effort excellence Pogo has neat wing tail lay out would find difficult im prove upon Scrutinizing fuselage readily apparent dex terity concentrated Owl used basic design principles full capacity resulting design very pleasing eye good things tend Starting engine cowl abandoned usual cheeks preference tight-fitting smooth cowl protrusion slight bit additional frontal area enhanced cowls smoothness cleanliness 2/3 drag formula majority anyones book Next Owl used engine width maximum fuselage Thus fuse lage top view straight line nose tail post obviously has minimum wetted area can get side view again dimensions accommodate pilot within smooth flowing lines Notice cross section shaped less like old-fashioned coffin someone discovered long ago requires least amount space human body Further attention given can opy installation canopy itself less normal probably purchased same source others notice instead just setting top fuselage canopies usually Owl made big effort design fuselage top allow ing canopy flow obliterating usual angles intersection Wise thinking Owl pronounced causes drag intersection angles Whenever part meets another such wing tail cheek cowl examples channels formed raise havoc drag As air tries flow through channels around parts difficult get down channels formed intersections air finally does get channels tur bulates rather flows smoothly Tur bulated air spells drag capital letters Hows clean look again notice fuselage taper Importance smooth paint finishing job cant over stressed quick particularly effective method finishing described article seems shame risk such pretty job air thats what build em Owl felt junctions wing landing gear tail surfaces offered possible drag reduction proves out model too Wing thinned maintains laminar-flow section November 1976 391 F ISA BLOCK NO 31 DRILL / 4 HOLES STALL L/8 MUSIC WIRE LOCATING PINS-4 PLACES NO38 DRILL / 2HOLES - + POWER POD DETAIL MAPLE ENGINE CRUTCH CEMENT TO POD BLOCK FiEGK AREA 5/16 X 1/2 MAPLE ENGINE SUB-MOUNTS NO23 DRILL INSTALL BUND NUTS FARSIDE FILL WITH BALSA BETWEEN MAPLE SUB-MOUNTS AND BALSA OUTER CRUTCH 1 I/B PL WOOD FTI 1/4 MAPLE OR PLYWOOD LANDING GEAR BLOCK FT2FT3FT4 In--II 1i -4 II AlI DMECO CR-I CANOPY _flTOPKTI AlA FTZ7I_[3____ C-A CB CC FUEL TANK COMMRTMENT FlFRAMNG 1ALSA BLOCKS _______1----______ _______________________ ____________ _______NI. FBIIjI/4BALSAWINGSAOOLE . --1 IIIII/4XI/2MAPL II~J1/4 BALSAtVSERVO RAILS -Ak_______ FK BOTTOM FB2 II Lj FB27TT7lF I/B BALSAuiFB311 I/BBAL1SA C-B K-1-I - --- / NO 30 DRILL 4 HOLES II JI ii II ZINU7~F7 Fl TOP-I/a Pt WOOO riLiLit \vIBoTTohiJ FT2I/S BALSA FTIAI/S BALSA FT5 I/S BAjSA FT3Il/S BALSA Li FT6 PLAM HATCH L32 X 5/16 BALSA 1/4 BACKBONE HFTS BALSA tIz AL AI/S B MEDIUM HARD BALSA I/S RUDDER SPAR 1/16 1/4 X /2 BALSA MAIN CRUTCH /_____ 3/32 SHEET1/4 SQUARE R2 /- FT7 FTB-1fr __/ _ II_ II _____I_________ 0I FS5 11 FB4 ___________________________________ ___________________________________ I/S DOUBLER K IWSBALSAfl j/ OO AMA PFORMULA ONE DESIGNED BY DEBOLT DRAWN BY S GRIGG SHEET WING SFN 52WING AREA 520 SQ IN WEIGHT 5 POIMDS POWER 40 CU IN 0I234567B c-c 1or101 u~a SO1VA313 VS1VS 03 VHSVS1VS X S/S F_ ------101 III IIII sI SII Tiii __I iiii SI3O1S dli VS1VS VS1VS /I X 8/S VS1VS /I IAIO&I IS 981 3IVIAI VS1VS 8/I jAQ S 5S S 5981 3IWI E JIGI/S BALSA 3E JIGI/S BALSA 7 MAIN SPARI/S BALSA IILING EDGE BALSA TIP BLOCK 3/32 MUSIC WIRE TORQUE ROD INSIDE I/S BRASS TUBING BALSA AILERON AND TIP -1~ - l0 22 - Oj II-jIII I iK_1K--IL H II44- ii II II II I_ i1iI Ii iiIiii______II-i-I IiIi 14Iiii--itII II II IIII -AL 2I 7L117 w7 2 ----11W5 I1W6 ___W9 IIiiiiIIII IiH-~---a- I-II HIIIIIII ItIIIIII IIjIItII_ 11 1101III-11ii Ii-II BUILD WING INVERTED FILL WITH BALSA -S I III II SL9CCI0 1HS 891M0 P AS NAWU 170930 4 Ag aN9Isa 3N0 d Ald 91/I IIldS VdS HS .9/I ilYSlBflOO S La -WI W2 -W4______ NOH 1OWNO Owe-no a3IIooI SNIIS HS C/C -F1 12J-foI II _______ itSi1SI1S II II— II S1HM ONI~ jIIIII SaG S HIOS aOOMXld 2C/2 TOP LEADINI TOP TRAILIN ALL WING RIBS ARE I/B BALSA 3/BXII/4X1 TOP 2 WIDE FIBREGLASS TAPE OVER CENTER SECTIONP1 I1 — GUS III__ IIIII IIII IIIIII II IIIiII __________ii--II __ItI itI WING TIP RIB DETAILIiK I I V IIL Iit1—1II 3/8X1 BALSAMAIN SRI/4X1 BALSIi-III -- III II ID2\ _II 1L -- --2 -I 1/4 BIRCH DC LEADING EDGE JIG I/IS X 1/4 SPAR CAP STRIPS 1/16 PLYWOOD SPAR DOUBLERI/B SECONDARY SMR WING ROOT RIB DETAIL TRAILI EDGE JIG Year afteryearafter nuore ers depend Coxengines JWe congratulate competed NATS4 Youre winners book especially proud that4 award winners chose Cox fly with4 TROPHIES WON BY COX ENGINES AT 76 NATS Mouse RaceOpenAll coxlstthru 5th4 Mouse RaceJr-SrAll coxlstthru5th4 1/2AProfileProto Jr AlIcox lstthru5th 4 1/2AProtoSpeed Jr Alicox lstthru5th * 1/2AProtoSpeed Sr Alicox lstthru5th 1/2AProto SpeedOpenAll coxlstthru5th4 1/2ASpeed Jr Ailcox lstthru5th 4 1/2ASpeed Sr Ailcox lstthru5th 4 lf2ASpeed Open Alicox lstthru5th SportScaleJrcoxlstand2nd4 1/2AGas Jr Alicox lstthru5th 4 1/2AGas Sr Alicox lstthru5th 1/2AGas Open Alicox lstthru5th 4 AGas Jr Ailcox lstthru5th 4 AGas Sr cox 2nd3rdand5th 4 AGas Open cox *lstand4th 4 cGas Open cox *3rd FAI Power Open cox *2nd 4 AMA Gas Scale Jr-Sr cox 1st 4 AMA Gas Scale Open cox 3rd 4th 4 Payload Jr-Sr cox lstthru 5th Payload Open cox 1st thru 5th 4 4 cargo Jr-Sr AlIcox lstthru3rd 4 cargo Open cox lstthru5th 4 * conquest Series Engines Just wait until next year 4 ginesw*nasfteflasCOXalgifleS4 4 4 Makers Ccx Engines Cox/Sanwa R/C Systems 1525 E Warner Ave Santa4 Airtronics KitsAna California 92702 division Leisure Dynamics Inc 4 Phone 714 540-8200 Canada Leisure Dynamics Canada 1315 Lawrence AC Ave East Don Mills Ontario Canada4 Pog 0 fewer intersections have clean er bwtrer air flows Owl design very clean respect removing cheek cowls canopy design landing gear intersection fuselage comes little additional engi neering separates outstanding air plane good Owl racers foremost George Owl did thorough job respect Pogo design excellent place start achieve model Formula different superior ways course models have problem areas way handle prob lems working full-scale designs means difference between winning losing races Over years have come across new ideas methods making models work better Pogo design First will notice Pogo minimum~ size Normally would violate basic design principle using no necessary get job done however experience have learned 5-lb weight limit too high minimum Formula aircraft practical course keep models size down minimum least drag pos sible within rules remember aircraft flies its wing enough lift engine power must carry weight lift too little speed lost through improper use power could ever hope gain through what drag reduction might has realized thoroughly us have flown Formula II great deal Formula II aircraft roughly 1/3 larger Form yet use same equipment have proven equally fast has wonder should research recent Formula designs g faster faster although engine power has creased drastically nor much else im proved greatly Wing area has expanded considerably cases over 12% large increase such small models Ap parently message out designers have taken advantage what has proven Formula II aircraft Pogo design takes full advantage fact allowing plenty wing area thinner version proven laminarflow airfoil least frontal area has kept rather equal though wetted area has increased along big increase lift What will notice flying area model slips easily through pylon turns almost accelerating smaller models drag through Now look front view fuse lage see very clean no protrusions Rear exhaust engines did away nasty need exhaust stack coming out side boon another design feature use modeler needs properly engineered pressure-type cowl system engine allowing engine run cooler expound ing theory reduces cowl drag rear exhaust principle reaches its ulti mate engine exhaust duct now combined cooling exhaust result ing cleaner airplane reduced drag Pogo design using power pod has advantages anyone can appreci ate Although bit work required designing building pays off fold racing removable pod serves very solid mount engine meaning maximum performance powerplant least vibra tion Secondly allows immediate access complete power unit Remove pod have everything connected power unit right hand can inspect just model Trouble shooting maintenance breeze result Similarly wing removes just half turn Camloc fastener requiring seconds open up entire RC equipment easy inspection remov able wing also allows easier transporta tion readily understood accessibility features can great asset winning races Irksome little problems continued page 95 44 Model Aviation himnitul 3 hannel act lightweight design top line components quality handorafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly E*5 lysienus 4ILEBL COMPANY 5301 Holland Dr Beltsville Md 20705 Telephone 301 474-2900 between heats can make losers out win ners simply because thorough inspection models uses up too much time So often just being able run consistently well heat far important winning having fastest model Another basic fact obtaining speed performance weight Excess weight has never done anything eat up power causing loss speed along other per formance Pogo very rugged design much attention given structure keep weight down satis fying results weight being very minimum no problems should encoun tered other having enough meet rules Frankly would make better performance rule weight require ments reduced could easily build lighter aircraft just strong faster performance-wise Obviously anyone interested Formula models reaches point does need step-by-step instructions assemble Often best us welcome hints procedure new design will utmost help score Pogo wing tail both built up true airfoils bit un usual tail obtain maximum efficiency true airfoil required used Pogo surfaces simple sheetcovered balsa strength simplicity lightness Both wing stabilizer assemble flat board top side down thus airfoil taper provides necessary dihedral desired top sheeting can glued together cut outline shape can blocked jigged board fit airfoil before commencing assemble basic fuselage structure crutch thrust line Assembly started laying out crutch adding bot tom bulkheads Assembly continued until entire bottom portion minus engine cowl completed before crutch removed bench After sembly removed wing stabilizer cut Next engine-pod crutch mated fuselage sub-mounts engine installed crutch pod block can added Now crutch put place fuselage cowl blocks installed Add top bulkheads covering finish rest structure please covering finish important method have found quick durable acceptable cover whole model except front fuselage Silkspan paper tends hold balsa together cover grain forward portion fuselage gets lot wear tear -oz glass cloth and resin does best job finish itself minimum results should good Apply coat clear dope cement paper down well coat K&B filler fill pores coat color finish Hobbypoxy Superpoxy coat clear adds final touch sealing decals etc finish procedure about quickest have seen promising durable satisfying job much can said about flying Pogo except perfect joy handle peculiar habits Simply use no control movement necessary get turns want will find else comes natu rally Pogo tends float glide due low wing loading plan bit longer landing approach familiar type aircraft Having built Pogo can proud owning different Form have fun wish best luck racing estimation have chosen winner November1976 95 Pogo/deBolt continued page 44 NEW MEMBERS CAN GET 14 ISSUES FOR THE PRICE OF 12 IF THEY SIGN UP BY OCT 15 SEE INSIDE BACK COVER
