NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99
Edition: Model Aviation - 1981/01
Page Numbers: 10, 11, 12, 13, 14, 15, 16, 17, 97, 98, 99
NO OCR TEXT NO OCR TEXT wing siruis Tuncuonal ana must ue nrnalleu carallel Authors model covered Co -s necessary since struts h butyrate dope booth Classic Models knew found what looking Church Midwing Gene Thomas 1in scale model wingspan 39 although four-channel radio small Cannon powered Cox 049 engine what envisioned As stood looking realized little too small Something larger thought perhaps 2-in scale would give model 53-in span wing area 477 sq No wouldnt wanted larger airplane perhaps 60 engine latest vogue Quarter Scale reluctant get involved 10-ft monster least first time around However Church quarter-size best both worlds scale airplane spans 79 has wing area 1073 sq slightly less 7 sq ft thought ideal 9 lb wing loading would 19 oz per sq ft 60 displacement engine would adequate realized would make excellent first Stand-Off Scale Quarter Scale model finished Church Midwing thing whicfl appears missing Jim Church cockpit landing gear has solid axle bound rubberbands shock absorbers Rosenstock made own custom muffler/exhaust pipes K&B 61 Its scale sure looks like attention detail oavs off models appearance Armed 1-in plans excellent documentation booklet available Classic Models started scale up plans project relatively simple just double size everything Note Gene Thomas chosen make two modifications true scale 1-in model extended landing gears enlarged tail surfaces Looking 1-in plans realized original scale position landing gears marked plans would adequate Quarter Scale Iconsideredusingthe scale size tail surfaces also decided would too small used Gene Thomas enlarged version choose build airplane Sport Scale competition much can done gamer points Start off referring documentation booklet Classic Models 1-in plans Youll find wires turnbuckles pulleys paint schemes make discriminating Scale judge happy done accord ing information However choose build sport flying goodies can eliminated exception wing struts functional Leave off danger losing wing original plane built Jim Church first airplane built Heath Parasol After sold started build Midwing nothing Heath Parasol wings lowered top longeron eliminated cabane struts supported wing above fuselage seems simple 12 Model Aviation Beauty beast smile Norm Rosenstocks face due beautiful Church Midwing designed Jim Church some 52 years ago Models laminated prop age 44 BY Jt2 31rrL PROCTOR TURNBUCKLES iO -80 HEX HD S S SCREWS AND CABLES \N2~- 5/320 0 SS LEG TUBHG 4 AXLEAXLE TRAVEL STOP LOOP \~OBO HEX HO STEEL ~I/BOD BRASS ROD 5/32OD SS SPREADERSFOR 0-80 SCREWS 5/32 BRASS RODS SOLDERI/s SHEET BALSA COVERK CROSS GRAIN TO 032 BRASS STRAPSSHOCK RUBBER WHICH SCREW TO SPAR/1 HERE TO FIREWALL 032 X 1/4 BRASS TOP-BOTTOM 1/16 PLYWOOD SFR JOINER N 040 BRASS SECURED WITH 4-40 S0WAS WING HOLDDOWN F 1 /4 ~NEI2 WALL KB ENGINE I/I6PLY COWL RING 7 2 V4 X 3B SPRUCE SFRS /7 7 Ii X----I/8 HARD BALSA SHEET OPTIONAL HOLES I/B X 1/4 SPRUCE FIN AND RUDDER POSTS I/By SQSPRUCERIBS TOP AND BOTrOM 3/8 L E SPRUCE I/B SHEET BALSA SURICES BRASS LAMINATED FOR SKID IN U-STRAP 3/32 X 1/4 SPRUCE STRINGERS &tOERONS 3/16 SHEET BALSA SIDES FULL LENGTH 1/2 TRIANGLE STOCK IN CORNERS 3/32SHEET BOTTOM -CROSS GRAIN T-NUTS FOR 2-56 BOLTSPLUS I/4SO SPRUCE DIAGON1S ON PLY PLATE IN COCKPIT 5/16X 1/4 BALSA T E WING I/BSHEET BALSA RIBS 1/4 X 5/B SPRUCE SPAR SR FiLLERS AT AILERON ONLY 1/8 XI AILERON SPAR FIBERGLASS COWL OR BALS ALUMINUM MOUNTS 2(/ AWM CLIPS 3/8 50 ALUM BARS SECUREDMOUNT COWL TH 6-32 X I/2SOCKETSEE ABCE 1/4 X 3/BSPRUCE RALS WITH 3/B X SPRUCE LG MOUNTS S -----032 STEELFITiNGS5 LOGETRCL BRICK WITH TWO BELLCRANKS 1/8 X 1/2 SPRUCE DOUBLED FOR STRIJrS 5 WLLIANS WHEELS N 032 STEEL WING FiTTiNGS ON BOTH SIDES OF SFRS 1/8 SHEET NOSE RIBS 1/2X BALSA LE 7 7/j7 VA //IA-i3/32 PLY WOOD Ii DOUBLED FOR WING TIPS SPRUCE FRONT SR TO j no thought doing before result increase 30 mph same engine wingsquite remarkable front cowl design Midwing fluenced Ed Heaths Baby Bullet direct result having accompanied Ed Heath 1928 National Air Races Cleveland Witnessing fantastic performance Baby Bullet bound have profound impression whatever design might come mans fertile imagination result Church Midwing Church Midwing raced 1929 National Air Races after having test-flown Ed Heath Midwing almost won race burnt valve Henderson four-cylinder engine forced out lead confirmed Scale builder will want get reprint Experimental Aircraft Assn 1931 Flying Glider Manual Construction This RC model experienced builder flier Building project requires variety ma terials addition balsa will need spruce plywood aluminum steel fiberglass adhesives used epoxy cyanoacrylates Hot Stuff Zap etc Ambroid However adhesives suitable SCALE 27 H P HEATH HENDERSON SCALE SPINNER SMOWNENGINE TOP VIEW M SCREW3 MACHINED FROM ALUM.0-56 GOWN H OR USE COMMERCIAL MODEL ENGINE MOUNTS PRUOUCY II VA PLY RIND II I/4V3D BALSA FILL FlU-COWL REST I/B ~ DOWEL COWL BRACKETS TYPICAL FL FIREWALLOW SO ALUM BLOCK TYPO /4 PLY - BUTT PACK ALUM TUBEFLAT LI/SALUM O2A MOTOR MOUNT DETAIL 90 ENGINE 5 VICE -SKILL MSJNT NICUSR350 I/OOUT SOCKET HEAD SCREWS ITYP 335GI/4VA PLY LWINO SPRUCES SIZE NICAS BUTT WRAPPE0POOl FUSE SISES/SO WITH FOAM 4 AMP HR SR SOFT S/IA SPIECT NUYEAGPHIA BGG 6P, N tN PIP OIIAIflI ft,TOP GENE HIOBGN/ULANBIU MOBELS51Yt COWLES VERSIONPS BVV Gel BELVILE N VBABY OPTONALI-117GB BALSABLOCK BOLL SCALE HEATH HENDERSON CYL ENSINE B PROP/30 PLY SHOWN CLOCKWISEI Fl004 RUTAT SN FlU S-S/U SPINNERsos-VH % /0 PLY GINOSCALE COWL CUT-OUT . RECE VER BATTERIES ' SEE MOTOR MOUNT DETAIL- 2 HECOMMENOES POWER-BLACK RUB RI ENGINE WITR GD 0eV YE PROPSOSOESTED 506 N/B U COAL BRACKETS .U 040 ALUM RES -V4O COWL FROM FIBERGLASS ORGAM REAG CUBLE/SYRLYSR FROM BALSA BLOCKS VVACDUY 552 FRONT CAB.E BRACKET USEURDENES STEEL S HESPROCTOR TURNBOCKELS S CABLES FRONT STRUT BRACKET BEGS TYPO -5 WILLIAMS WREELS4 ASS NO OEAR/STRUT T'''-- BRACKET 030 GROUND USRARSENES STEEL-I REQ .O3S ORASS IS RES FOR LANSING SEAR Drilling tapping needed make motor mount Should have problem I Left wing centersection after initial assembly small holeM ut nter section Note scale wing panel connecting straps underside wing straps 14 Model Aviation Split elevators require two sets cables control author bolted together vertical f stabilizer fuselage small brackets screws now recommends epoxying FULL-SIZE PLANS AVAILABLESEE PAGE 128 REAR SPARTRAILING EDGEV32PLY WING COVER NGT SHOWN SNs~ooSCALE IN INCHES ERFGGELAGESIDEWINGPSSITIONPORCLGRITY VIASHEETCGVERFROMF250 1 I II I I I RIB lBSECTION G TOP SPRUCE FAIRINGSTAB FRONT CRDSSGRAINED____________________________________________________________[v32][b1988170113100]] _______STRINGER POSITIGN ToP V4050BRACESYPJ rTOPVIEWIWGUR EET S SPRUCE RIBS IFOFS-FR-- -- 516 PLYHORN RUDDER HEET CORE LCA UCHDRD~ ____________IrIS/SZXIA f~fIrr BOTTOM VIEW7 __.BIDE STRINGERFROM FO TO TAILPOST CRUSDSRAINED ~-- --- ~---FL/BE SIDEBOTTOM SPRUCE FAIRINOCOG RING NOTECENTER LIP UN LA BRACKET LY rRcABLEETBERThUC__________ BRACKETDIAGONALS EXTEND WING JOINERS-0525L0ABRASS-2 REQIS BENT UPWARD OUTERS ARE- SIDEDOUR ER32024 SPRUCE 10 OPPOSITE SIDEBENT DOWNWARDLU MT BRUCKET N RUCKETS FRONI 030 GROUNDI__________________________________ PUSITI ON5 WILLIAMS WHEELS ToRI0-RU HEG HEADSORGI SPRUCE INHARDENED 010CR2-565I/4HES HEAD STAINLESS STEEL/ SCREWOENTIRE GEARF3/IAID WHEEL STRINGERDONBOLTS WITH BLIND NUTSCOLLARS TYPI POSITIUN' IMOUNTED FLUSH ONSTRUT LA STRUTS S/3D INSIDE TOP PLACESATTATCH FO1 II05 STAINLESS DOTTES URSHEET1/IA SHEETIK~~---114-WINU SPAR FITS SLOT STEEL 4 RESSEE VASPRUCEBELOW I/B U 114TSP COVEN AGREE FRAME-T7----------------k2AGLE 3/IA SIA MW SPRUCE FILLI/TA STOCKVSO PR E FTPGEAR DETAIL C2SECTION AT LO ATTATCH COUCHINGCUT GUT FTPSHOCK TRAVEL STSP BEG SF 032 BRASS 004053555 050001 L4HIRSPRUCE RAILS SPREADER BARS 5/32 FUSE SlOELOAPLY FLOOR 2 R SD STARLESS STEEL-S BEG REAR STRUT BRACKET REAR I/IA PLOFLOOR3/B5 I"-- VON""BOTTOM SPRUCE DOUBLERLSPRUCE032 BRASSSPRUCEFAIRING F2/ CHAMFER TURTLESECK PLY3/32 PLY NOERS TO0 I/IA TOP r TURNRUCKELS HARD BOLOS SHUCT CORE i/Lj 3/32524-BULKHEADS P45 NA SPRUCE VI PLO FLOORARE HEETSHOCK TRAXEL STOP CK PLYTA SHEET APPROG SCA.EF/I THIS ISBALSA LIP PILOT SIZE F2 COLOR LINE.-BARBER BANDSHILLS TSP FOR FFF3 TYP TRIG PLATE-ATYPE SCREW BLACK 1 /400 SPRUCE I0 5/3 K ENTIRE FIN V4 SPRUCE ICAL OSI INGER POSITON ST CA TO YELLOW --- F0 BULKHEADS TOP 2CABLES FROM CRANKS II/HS V/I SPRUCE FILL~~---- LEUSTORS RINSE POSITION TOPII ELEVATORS N I/AG/A SPROCHORN POSITONS BLACKTHIS AREA ~COZ ASS EACH VIAL CTO2-5A T NUTSSIASHEET CR9SS-GRSIlt~ ~i7J2I~TZDO CBOt RHUCES ToP\ASTAB- 4-40SCREWS N NUTS EACH SIDE -iI--— ci___ SPLICE LINES2-A PLo TEV EOUES/OF.i/iFfi3/32UI/4 SPRUCE TRIANSiLLAR STOCKYELLSWTHIS TWO METSL - DOURLERfUSELAGE SI CEO4.TUFSCINGS S STRINGERSARES BOILSL -o--- L1 Io-I/I _____ III .--fVIA PLO FLOOR. OS FLOOR 3/Of SHEET CROSS-GRAINED NUMBER ---RACINO POSITION REAR CABLEREAR STRUT GRACKETBRACKETFODELADE SIDE VIEW 2403/B SPRACE TOP UIEW5/32BRSSS ROD 2 RES RAILSI IL32PLO WING COUCH tEE L S DETSLSILUER SOLDERRIB RIB lB WIAsOfPS TOP SPAR 00 PLY PLATE I/BVVASPRUCE 032 BRSOS2 CA RES/FUSE SDE TSAOVHHEOTCP2 VIAPLY DOUBLERHESS BOLTS H BLIND NUTO END LINES TOP FRONT VIEWSECTOR AT AR TYPICAL RUDDER N ELEVATOR BORN 040 ALUM 3 REG I/BV I/B SPROCE SLOT FOR HORN SKID SPRING BRASS OR ALUMINUM THE CHURCH 1928 MIDWING SPORT PLANE 8 RACER IN QUARTER SCALE DEOIGN N PENCILS HO NORIBAN ROBENBIOCIK WINO SPAN 70-DOWINO SHEA 073 DO WING LOADING 9020 PSFWEIGHT N LBS POWER K NB Al ENGINEPLATE SF0 THUCED INKES N REARRANGED PAR MODEL A/BATON BYHCRR CLURCY H/TN FUSELAGE OIDE LAYOUT 3 HE 3* 1 SON *3533 DANA2V S3V5*53SS* SO -4IS/SO SLCSPSUVE area Im sure someone flying club has skills would help Most screws 0-80 2-56 size used either hex nuts blind nuts Fuselage fuselage construction straightforward sides 5/32 sheet balsa 5/32 available use slightly softer 3/16 instead plan inset drawing showing step #1 step #2 After cutting out formers F-i F-2 epoxy place assemble After 1/16 plywood floor place top bottom sheeting place aft portion start making up landing gear strut fittings fittings made 1/32 x 2 x 18-in ground stock steel can obtained machinist mill supply house Look Yellow Pages picking up January 1981 15 Tfl fuselage siocs ws-in sneet oaisa stringers aOOed shape Wing center section sits place note box wing spar NO surprises wing consTruction iss Typical uo nose inc 14ifl sq spruce post scale non-functioning aileron cable pulley Prototype photos courtesy Scale CIass cumentatlon book Church Midwing ground stock can also purchase 6-32 sockethead capscrews will find some what cheaper buying few time plastic bags Taps drills can also pur chased buying taps ask gun spiral point taps stronger easier work will also need #36 drill tap Other drills needed #29 #43 fittings can cut hacksaw shaped ordinary files careful sawing drilling material allow become very hot tool steel will harden become unworkable should happen take torch heat metal until red hot let cool slowly anneal After bolting fittings place stringers can installed shown plan landing gear beaut stumped some time day walked surplus store carried metal found 5/32-in stainless steel tubing went crazy Now let see full-scale aircraft i-in tubing landing gear 5/32 x 4 s made landing gear just about same way originalby pounding ends flat hammer drilling flattened portions bolt assembly together front view landing gear shows exact length 4 hole-to-hole remember ends 900 out phase Four needed Yeah know what going say next am supposed get 5/32-in tubing Well never said easy However some options 1 can use 5/32-in brass tubing cut short lengths -in music wire fit inside tubing between flattened ends 2 make landing gear 5/32-in music wire bolt wire across fuselage 1/16 ply floor 3 can did check out surplus stores Assembling landing gear another prob lem According full scale drawings bolts -in diameter hex head scales down 1/16-in diameter hex head first thing did go railroad department local hobby shop got some 0-80 hex head screws delighted easy until went assemble landing gear found slightest stress flexing landing gear would break screws dis traught What else could go wrong found ita place Scale modeler can get excellent hardwarea company called Caltronic Laboratory can supply stainless steel 0-80 hex head screws well 2-56 up dis covery saved project entire airplane bolted together Ive never bolt break yet youre surplus store see can secure some 2024 aluminum Youll need some x 5 motor mounts well length ofi x x 12 will surprised easily can make motor mount hacksaw file will have locate holes engine 4 square beams making sure length engine drivewasher firewall engine used K&B 61 found very reliable COLOR NOTE BROKEN LINE DEPICTS COLOR SCHEME OUTER EDOES BLACK INNER PROFILE YELLOW NO NUM ERALS ON WING YELLOW BLACK----YELLOWBLACK x Li 25KOTS B BOLTS FTP FITTINOS FROM ,REAR STRUT MAKE 0 EACH 000 OTEEL H REO~ LEFT WINB S Fl U FROM 2 PCO PRDI/ \ EPODIED TORETI FRONT STRUT MAKE 2 EACH WINB LEADINO LOVE 1/OVIBALSARIBS WIA B B C COT I/B SOECT PLO RESTTO RECEIVE I/3V PLY CI SPAR EUTENOS 0 BEVONO RIB /BPLY SERVO 3/A STOCH RIB AlA 3/16 SHEET 0 RES RIB HAVIR Pa 2 REV. /02 PLY TOP B BOTTOM -W7 IL V I II III AIUAR ONLY CUT OUTI III I IIRAIN RIBO IWIC.10 RED VA S HEET REAR SPAR V4HS/K SPRUCE F. F SHEET PLY REOT ffi -TRAILING EDUE NOTEALL WING RIBS I/B SHE 16 Model Aviation Jim Church fuselage Midwing picture reveals details seen other views such wing support brackets u NIrImnaI pnuBo enowing dim nurcn sianoing proudly Midwing relative size plane becomes readily apparent V1/00 PLY -TOP BOTTOM DRILL TY5 Li WY ITVPICAL ---V Left e landing gear riggingan accurate duplication original Note number ot cables turnbuckles Above Another view landing gear mount bracing turnbuckles allow adjustment achieve alignment symmetry Article has much source data FULL-SIZE PLANSAVAILABLESEEPAGE 128 NO NOMENCLATURE APPLIES TO BOTH RANELS 3/SOPLY SANDWICH TIPS I IIIII II II II 104 BALSA____ VBS OH BA LSA BOTTO~ ONLY I/4O BALSA FILL STRUT FITTINGS S POSITION B REG OF 030 STEEL COVERING JWDjJWDj rs NOT SHOWN AS TRUE LENGTH NG SILVER SOLDER 032 STEEL4REO SPARS CONSTANT TO ENS RIGHT WINS PANEL WING NOMENCLATURE APPLIES TO BOTH PANELS RORH Ti ROD N CUT JWT/ JW7f~WY 3/H STOCK CRANK CUT FOR HERR CLEARANCE ILL 3/30 PLY MT HINGE DETAIL TYPICAL AT v- AILERON SPAR LVOI SHEET lOB 010% BALSA DOUBLERS ITYP WSA V4SG SPRGCE NOTE ELEVATORS ARE OPERATED INDEPENDENTLYOUTLINE FROM OS SHEET FROM TWIN BELLCRANKS SEE PLATE IIFEATHER 10 10K STAB BELEUCORE URHARD SHEET COLOR LINE TYP WA VG3B UBSHEET BALSA TOP B ROT SPRUCE vPIIL I/HR BRACE WIRE RIGGINO 4 PLACES CRAP -N WO STAB B ELEV DETAILYELLOWBLACK jjCATNOTE DIHEDRAL ANGLE 0A5 PROTOTYPE FRONT SPAR NOTE WAGHTOUT WING TIPS O WICI/SO PLY COVER ADATWHATRO ARTYP COVERINGTOP S BOTTOM ------, INK ISPRUCE RLOCKS FRONT ' SPAR---WI REAR SPAR DOTTE-AlA TAPER SPAR FROM THIS POINTWING TiPS FROM 0 LAVERS OP FRONT SPAR V4U SPRUCEPLY EPOXIES 10/ SCALE FAIRING ___ __S_______ HEATH HENDERSON SCALE CABLE PULLEY T B BL4 DO SPRUCE SCALE HORN.zccThGENERAL FRONT VIEW S LOCATION NOTE FIBERGLASS TYPE COAL W3 0ADA4ADBSHOWN BALSA COWL OPTIONAL ARD RES I_________________ Ii THE19DB ______ __ HEAR SPAR CAPPED BETWEEN HIBS TB BCHURCHMIDWING IWHAWITH BALSA ALONG AILEHON L E-IN OGARTER SCALE zJASA LS SHEETz~-W3ARES oDESIGN NORMAN ROGENSTOCK .. V4 W3ATHACEO FOR MA HERB CLUKEY ASA ADO IPLATE ZOFO WA-ORES ___________________________I STATED sport-type 60 will front engine cowling front top fuselage fairing part wing center section model made fiberglass Alternately can made balsa blocks thin ply making fiberglass hard way somewhat simpler balloon method quite easy needed carve plug slightly smaller needed lay up glass cloth resin force balloon over piece familiar technique write Hobbypoxy will happy send information method January 1981 17 Continued page 97 engine mount its original configuration Later hole put through mount sides accommodate D-size Nicad battery onboard ignition also provided necessary nose weight screws holding U-shaped bracket holds tail skidi also used fasten lower stabilizer stays Turnbuckles ends control cables used adjust control trim landing pleasant memories back-fire engines smarting fingers result hand-flipping props Now have glow-plug engines electric starters cure situation enjoy power flight am fascinated almost silent tiny CO-2 engines powered flight desireable ultimate completely silent flight Hence design creation Flyn Things challenge create what call space-ship gliders came via article another magazine making planes styrofoam package plates hold items such vegetables meats supermarkets started simple delta-wing type proved have beautiful low graceful glideif just let drop slight push between thumb forefinger okay could get up some high point instance thirdor fourth-story window launched wanted pefformance larger designs shown drawings Interference has closed nearby flying site Boaters using RC frequencies nearby ruin weekends week-day sorties daring things So called Mad Test Pilot loaded up station wagon RC jobs would hold arrived Shangri-La 845 50 miles away flew constant stream until 420 down up bang bang bang 40-odd flights longwe single glitch Things getting might twitchy populated areas near cities retirement can keep Heaven During week pound typewriter yore predicted love new boss Hes bit flakey No laments please Looking forward being joined guys Wilbur Orville salute clarification Although story about Charlie Grant November issue error Charlie concerned words thinks connection being first man fly heavier-than-air Vermont could cloud record seems baker Rutland made such claims thorough search Rutland newspaper files time indicated mans attempts ended crashes used towed glider no witness stated flown successfully same man 1911 bought Curtiss machine became first state fly powered craft Charlies first glider flight made running down sloped roof sailing off 20-odd-mph wind Later flights traveled nearly 500 feet Charlies first earned him membership Early Bird cordially invited make use columnand provide pleasure fun fellow modelers Bill Winter 4330 Alta Vista Dr Fairfax VA 22030 Garber/Winter Continued page 7 working series films histdry flight charge Smithsonians Kite Festivalthattakesplaceeachyearonthe Washington Monument groundsearning yearly splash local newspapers fact Garber Facility youll find Chinese kites formed nucleus Smithsonians aeronautical collection 1876and such contrastass Minute Man II ICBM Guidance Control System Jupiter vehicle carried two monkeys space May NORTHERN CALIFORNIAS LARGESTU DISCOUNT HOBBY SHOPI I well FUEL New high film strength lubricantU increased power engine lifeI Highest qualily ingredients IJ Deten~nt action cut varnish I II II II II II II II II II II IHOURS Monday thw Wednesday V JU-O JU nursciay z noay V JU-O UUI U m Saturday 930-6 00Sunday 1200-500 1959 Free tours Garber Facility Wednesdays Fridaysat 10am Saturdays Sundays 10 am 1 pm Reservations least two weeks advance reservations info 202357-1400 Monday thru Friday write Tour Scheduler Education Services Division National Air Space Museum Washington DC 20560 Individuals groups up 40 acceptable tours lasting approximately two hours Ch Midwing/Rosenstock Continued page 17 engine spinner machined aluminum static judging can made balsa glued scale-type prop flying another spinner prop may substituted radio installed ship brick type has receiver three servos installed within find brick conven ient install remove Tail Surfaces tail group consists balsa ibs glued place Use large sanding block taper off ribs some sheet core leaving about 1/16 thickness trailing edge leading edge should sanded round cross section elevator has its own horn hooked up control cables Proctor Enterprises bellcrank located floor cockpit turn moved via short 1/16-in music wire pushrod servo rudder controlled same way Its bellcrank sits alongside elevator bellcrank stabilizer epoxied -in sheet fill top longeron vertical fin epoxied stab Take care its alignment L H0 OLD TIMER KITS Full Partial jUts P & W Semi-Kits Machine cut ParIs 1941 Playboy Sr 00 Span Plan Extra $1400 1941 Playboy Jr 54 Span Plan Extra $1050 1935 Miaa America 84 5pan Plan Extra $2000 1939 Mercury ScientifIcs 72 Plan Extra $1750 1940 Ranger 46 span Plan Included $1300 Plana Playboy Sr $300 Playboy Jr $250 Mixa America $400 Mercury $400 Midway Model Co --Full Partial RIta Rib Tip & Former Kilo--Machine Cut Parta 1937 Long CabIn 70 Span Plan Included $2000 1036 Flying Quaker 04 Span Plan IncI $2150 1937 Quaker Flaah 67 Span Plan md $1750 Old Timer 90/c-Pull Rita- 10- 15 engines 1939 Pomerhouse 55 Span 2 3 ch It/C $3596 1939 Air Traila Sportater 50 Span 2-3 Ch $3590 REPLICA OLD TIMERS 020 enginea 1949 Sailplane Goldbergs 36 span $1495 1940 clipper MK II Goldbergs 36 Span $1495 9940 Playboy Sr Clevelanda 39 Span $1295 5940 Buzzard Bombshell Konofea 32 Span$119S 4Ko liodelsFult Kilo-Gao Rubber 1940 Buzzard Bombshell 72 Span $4995 1937 Denny Plane Denny Jr 73 Span $7995 1939 Korda WakefIeld 44 cabin Rubber $1495 Tyro Modelo-Full KiI-- 20 Ia 40 It/C 5941 Playboy Sr 00 Span $4495 J S R Mad6Io--020 Replica-Full Kilo 1940 So Long 32 Span 020 Tee Dee $1295 1942 Brooklyn Dodger 32 Span 020 TO $1295 BOOKS ON OLD TIMERS Antique Old Timer Model Aircraft $1000 Air Age Gas Models $395 Zaic Year Books 193536 $250 37$45030$500 ELECTRIC SYSTEMS AND ACCESSORIES Astro 15 System mith Prop Reduction Drive Unit Combination-$144 00 Ret ISPECIALOssOao$99 501 Astro Plight Rapid Charger voltage Booster Cowbination-$59 90 Ret lSPEClALsaaeses$44901 Quiet RevolutIon [Book ElectrlcslSpec$5OO FREE FLIGHT KITS Sport-Scale Sparky Comet Old Time Rubber 32 Span $409 Curtiss Pusher R/N Models pan C09 $906 Shipping Handling Send $500 latest Up $809 add 5159 catalogue copy $001 $2000 add $221 will sent free $2991 $0500 add $300 upon request $0501 $7000 add $300 no der over $7000 add $000 CA Addressees add 69 PO Bow 3004 Slate sales tao. Send MO Seal Beach Ca 90740 check vlsa/Mc l#--EXP 714 0946223 morningi best recorderCODEaact chg--$l50 HdI 3ctlvates after 4 rings January 1981 97 Jirnddo PROPELLERS Made polyester boil color Go GRISH 1 propeller True helical pitch airfoil win-power 2 Blade Tactor 53each 545 35 4ICcSizes pitches 6364Mc 747678rstyles 8486887Cc 949697 98104106__needs 1411-6116 *1 24126126*150 2BIadePuslseAT YOUR DEALER i4-46364SOc 86ICc 96106*1 3 Blade Tractor 53 6364 Mc 3 Blade Pushe 63SOc Metallic AIumgnum color Tractor 7678 $1 66881 96 106104*150 Pusher106*180 WIRE LS VK WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Delrin bearings two sizes 8 Nieupors & Triplane 85 5 Proctor models$3595 Send 604 complete literature price list kits ac Cessories model bolted tail assembly together onto fuselage feel practical due amount work involved control horns made 040 aluminum Three required portion horn glued inside surface should roughed up bit file before epoxying place Wings wing constructed conventional way tips made two layers 3/32 ply Cut out four epoxy together make two pairs tips should complete leading edge trailing edge After wing wing tips completely assembled epoxy fully cured ailerons should cut out wing tip severed point Place servos wing root no electrical extension required Y connector needed connect two servos receiver wing spars made in spruce size available take two Va x -in pieces epoxy together use white glue unless can clamp spar over its entire length until water glue has evaporated Water makes wood swell warp unless can keep clamped will end up warped spar used slowcure epoxy clamped edge workbench two hours able proceed GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 $7 68&1OPITcH 208 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 construction wing center section should built same time wing because three pieces must fit together properly Once 55-5 assem bly completed brass wing joiner strips installed wing should roughly assem bled large bench check fit butt ribs WIA WIB wing should make good flat contact 552 center section Also note strips brass lay over spar wing panel original aircraft about 5/16 x 6-in bolts went through spar hold wing center section means would need screw about 1-in long dont hardly make kind no suppose could made chose another route glued filler blocks spar between first two ribs Blind 2-56 nuts inserted under blocks corresponded holes brass strips together 162-56 hex head screws used fasten wing panels center section After spacer blocks have epoxied make ply mount servo provide removable hatch cover bottom wing servo can serviced 1/32 ply can glued place make mistake cutting off spar projec tions root end wing spar should project 2 beyond root rib wing support struts shown drawing no length given length may vary model-to-model model wood portion ran about 19 inches including fittings After making fittings cut four pieces n spruce little longer needed Notch out side n strip install fitting five-minute epoxy Hot Stuff swing other end will connect place other fitting strip adjust length suit Now epoxy second fitting place both ends have respective fittings tacked place take #43 drill place inboard hole drill through wood Next glue second strip top first fully dry take # 43 drill drill back through pre-drilled holes through fitting wood piece just glued done short 2-56 roundhead bolt nut can installed little epoxy screws nuts should slightiy over-tightened until head bolt nut sink part way wood Remember make two front struts two rear difference airfoil shape rigging wing support struts criss-crossed rear fitting fuselage forward fitting wing conversely front fuselage connection rear wing fitting used two turnbuckles wing After ship assembled turnbuckles adjusted safety dont touch again wing support struts fastened fittings shown wing drawing fittings like others made 1/32-in steel four required bolted spars shown 2-56 round-head screws nuts little epoxy Dont forget place little a around fittings have place hang covering 40 some odd years Ive model ing Ive tried various coverings Coverite used model best yet does much strength aircraft almost unbelievable servo quit during early flight plane would have basket case covering As damage repaired plane soon ready fly model doped clear butyrate dope sprayed over three four coats Cub yellow trimmed black original ship carries D-size four ampere hour Nicad nose aid relieving tail-heavy condition Drill out motor mount side plates insert aluminum tubing big enough carry battery Its hooked up glow plug switched carburetor idle one-third open micro-switch throttle linkage does trick advantage am able get reliable idle engine down 1800 rpm dont need external battery starting just open throttle wide choke engine two flips close throttle just above idleand will usually start first second flip prop Talk about sur prised peopleyou should see look faces start up word caution 1 never leave engine idle position running battery will dead about hour 2 Wrap D battery foam rubber make sure tubing carrier motor mount will accommodate battery foam rubber-padding failure shockmount battery will destroy way -in wheel collar 18- 20-gauge wire soldered makes excellent plug connector sure make cardboard washer put under collar prevent shorting ground Flying The original aircraft no dihedral 98 Model Aviation 3 RIGHT HAND TRACTOR GRISH~HN INDIANA 46373 BEGINNER TO PRO ES HOT STUFF JUST RIGHT FOR YOU HOT STUFF ORIGINAL CLEAR FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec THIS IS THE ONE THAT STARTED IT ALL 1/4 1/2 2 oz EXCLUSIVE VISIBLE FORMULA LOW VISCOSITY-DEEP PENETRATION INSTANT BOND RATE 3 10 sec HOT STUFF ELU LINEE t4E~ HOT STUFF GAP FILLING FILLETING POSITIONABLE HIGH VISCOSITY-TIMED BOND 10 25 sec 1/2 ozUse like regular glue wait 2 oz HOT STUFFGETS YOU OUT OF THE BUILDING ROOM AND INTO THE ACTION FAST HI-PERFORMANCE ADHESIVES FOR MODELERS AROUND THE WORLD O BOX 836 SIMI CA 93062 522-0062 model keeping original also has problem flying flies like full-scale aircraft Coordinated rudder must used turns otherwise turns appear stilted strange model weighed 9 lb netted wing loading 20 oz per sq ft first takeoff unexpected gave little power get ship rolling added little power get rudder take effect plane suddenly lifted off Later checked position throttle tached engine turning over about 7000 rpm 13-6 Top Flite prop K&B 61 will give maximum 10000 rpm prop flight handles best throttled back slightly about 8000 rpm thought reducing engine size 45 realized additional power bigger engine might help should plane get tight spot has Also putting smaller engine would reduce weight nose aircraft would require addition some lead weight keep correct center-of-gravity Otherwise ship easy fly floats over hot runway like old 40 hp Cub Under conditions necessary feed little down cause ship descend faster rate make wheel landing on-board ignition system asset because rpm too high plane will sink 2000rpm prop acts disk plate causing drag on-board ignition keeps fire going very low speeds Although plane lot work derived great satisfaction meeting challenges provided hope will much Enjoy Sources Classic Models PO Box 681 Melville NY 11746 Documentation Booklet Church Midwing $300 Plans 1-in Church Midwing $800 Experimental Aircraft Association Inc EAA Air Museum Foundation Inc Franklin WI 1931 Flying Glider Manual $200 Caltronic Laboratory 461 5 Cochran Ave PO Box 36356 Los Angeles CA 90036 Catalog Precision Model Engineering Instru ment Componentsfor stainless steel machine screws etc no charge Proctor Ent Corp PO Box 9641 San Diego 92109 Turnbuckles rigging control cable pulleys Send catalog $100 Hobbypoxy Products 32 Pine St Rockaway NJ 07866 Instructions balloon method fiberglassing no charge Coverite 420 Babylon Rd Horsham PA Information covering material send pre addressed stamped envelope LSF Regionals/Pruss Continued page 24 streamlined system experience can benefit us interested system Dave has offered provide rules organizers guide near future next year LSF officers havent yet decided whether 1981 will regional tournament international Because F3B World Championships have two-year program league front office trying set LSF schedule would dovetail F3B Team Selection Program LSF funded tournaments Except contributions made members send level forms league depends contest financial support current officers wish thank members past contributions Any input LSF can made contact ing following Gordon Pearson President 8232 Earhart Road South Lyon MI 48178 Warren Plohr Vice President 5395 Sunset Oval North Olmstead OH 44070 Warren Tiahrt Secretary 7647 Twilight Court Clarkston MI 48016 Keith Finkenbiner Treasurer 907 Barley Drive Wilmington DE 19807 Applicants membership can write directly League Silent Flight PO Box 39068 Chicago IL 60639 Include self-addressed envelope Good Lift RC Scale/Wischers Continued page 27 some additional weight nose balance Usually means batteries must located udner fuel tank long extension cord required have run long extension cords through models some profusion batteries remote servos no ill effects Another trick help balance tail-heavy condi tion use extra large fuel tank nose space permits plane will carrying much fuel needed contests model weighed fuel using fuel ballast can help keep within weight limits risk method temptation use fuel long flight subsequent tall-heavy landing An alternate system would employ two tanks greater effect rear tank feeding ballast tank located near engine Always land ballast tank full Continued page 106 Januafy 1981 99