NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation
Edition: Model Aviation - 1989/03
Page Numbers: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 106
NO OCR TEXT NO OCR TEXT fuselage sheeting piece thin flexible cardboard basic measurements fuselage sheeting given plans will allow test fit loca . fire tion cutouts Len The 09 10 engines mounted simple functional manner L brackets hold fiberglass cowls place Right cowls hide engines still allow easy access glow plugs needle valves radio mast ADF housing provide realism roiled 1A2-in plywood fuselage both light strong D-tube front wing oniy makes wing very strong aiso provides rigid platform engine mounts Inc cual tail wneeis usco jo suppon weight Sterling grass air fields used British RAF during war engine aileron servos mountea front behind main wing spar cabies pass through spar Frank sprayed dark green camouflage pattern last using masKing tape way edges color have feathered appearance full-size airplane rudder aileron servos mounted beams across cavernous upper fuselage Short STERLING --w 465RL&RGtLJ OM 3/ Q BALSA L R SIFT BRLR TE zBRLSR8H ERIBS HOLLOW D BALBA BLA BLOCK CRBI PAINTON FRRMWOR 1t 4 BALGA 8HET Y8 SQ BALBA /6 DOWL BF1LBR BLOCK I3LOCK /32 PAL-GA Q PALGA LONGEROIJ O 10 FSR /U Y BALMI AU A SHTII 4 K INGER WML& BA BLOCK \FARLCT PROM K&5254 TIN STOCK jxI BALSA Ye SPRUCE &PS TOP6 B~lTOM Y4 HARD BALSA WING GADDL BOTh SIDES &FAR p62 BALSA RIBS s4 &PUC TRU5S$ _____ 4 BALSA SHT NK -z-~ A &HT SOFt BALSA TIP - BALSA SH FIBRGLR& COWL A BLOCK& 4 7 A. M OU IF3 F3A P4 Th F F- 7 WING MOUNT I/S S/B MAPLE PLATES p 1/4 BALSA SHEET K 1 I [Ii I F-8 F-bAF-b F-6 F-6A 1/4 BALSA SHEET F-SF-3F-4F-SPA-AAF-7 -BF-B LIADIA--- ELS / /i - li// /ii/ y/-/- i BALSA--- _ LOCK NOSEBALSA BLOCK CABIN I/S3/B MAPLE1/32 PLY FACING1/4 PLYWOODFUSELAGE WING MOUNT PLATESON F-B FAASERVO RAILS 3/B SO BALSA AASPRUCE INBOARDANTENNABALSA BALSA BLOIS CABINNACELLEBLOCK PAINT ON FRAME-ABINCROSS SECTIONOUTBOARD WORK NACELLEI/4HARD BALSA AAWING SADDLE 1/IBDIA DOWELS ALSABLOOK/ F-IA IIII __ SAI _ -1L SHEET 1/4 SO BALSA — FUSELAGE BALSA TOP VIEWjP ELEVATOR 8 RUDDER PUSHROD CABLES II 4 INCIDENCE 1/44 F-4F-SF-AF-BAF-7F-BF-BF-bA PlO I/IA ALUMINUM MUSIC WIRE__________________________________ MAKE SLANDING GEAR WINS INERNO PLATENO I/IA ALUMINUM WING RETAINER PLATE ATTACHED TO MAPLE WING MOUNT PLATES WITH 1/2 SHEET METAL SCREWS MAIN WHEELS SIDE VIEW will using inch ply Wood lay out basic fuselage covering along edge sheet Draw pencil line lengthwise down middle both top bottom fuselage plywood Lay thin bead epoxy glue down %-in stringer top fuselage place fuselage plywood using pencil line alignment Note region former 14 16 will covered later step Once epoxy glue set interesting part starts Set up pan warm water add about half cup household ammonia Use piece sponge really wet down both sides plywood Put lots aliphatic resin white glue form ers stringers former 2 front former 12 rear ring former 12 top front ring former 3A sure put lots glue A-in wing 28 Model Aviation saddles Now wrap plywood around fuse lage Initially use masking tape hold things place masking tape will stick wet plywood stick tape itself bottom fuselage ply wood will overlap about Once plywood essentially place must bound tightly formers use electricians rubber tape parpose Measure off mark former lo cation plywood wrap form ers 2 through 12 tightly can tape tape will stretch quite lot will also sliding plywood towards bottom bit goal sure good contact made between plywood formers will proba bly find initial masking tape comes loose process Next sight down fuselage make sure wrapping process have twisted bowed Since glue set can align easily Re-wet plywood formers 12 14 bend plywood around frame slits compensate compound curves lower fuselage Use some masking tape hold down plywood Check no overlaps tucks everything fits may have cut tucks bit higher wider fitting Remove masking tape re-wet plywood add white glue formers stringers former 12 14 rear ring former #14 Rewrap plywood using rubber tape hold place Let whole assembly dry couple days fuselage drying build rudder elevator assemblies straightforward conventional construc 1/4 BALSA SHEET F- Full-Size Plans Available. See Page 188 1/4 BALSA SHEET1/4 BALSA SHEET TRIM OUTTRIM OUT1/4 BALSA SHEET ON F 2A Ii F-aFIIF13FI4A FOBOAF-12A FACED WH 32 P F-13 ELEVATOR PUSHROD CABLE BUSSES PUSHROD CABLE YELLOW 3/B SDBWE BALSAWHITE RED [i K~4 U EZ HOLLOWED BALSA BLOCK F-14 3/B SQ BALSA- F-IS TOP B BOTTOM 7 _________________________-I/IA 515 ____________________ "DOWELS II RUDDER TRAVEL1/4 BALSA 1/4 BALSA POSTI1-1/2 AT LEFTSHEET V32 BALSA SHEET RIBSFINII/IA BALSAII SHEET T E 3/BBALSA POUTVERT 1/32 BALSAI SHEETINGi~I1/32 BALSAFIN POST BOTH SIDESISHEET RIBS 44RUD BUJECABLE S/BSO/ WHITE itt -I1/32 BRASS BALSA L E3/32 RIBIBRAZE TOTAILWHEEL IRED i3/32MW I/BBRASS TUBE /--4-I4 I\I/B RIBRUDDER ARM BALSA BLOCK -H ST INCIDENCE RUSSETI/IA PUSHRODROD V I/A PLY 2-SA BOLT J[J ---- F IA FISBALSA AoQ HOLLOWED F141 P145 FREAR FUSEA F-ISFUSELAGEPLYWOODI DIA TAILWHEELS PLY WOOD 1/32 BRASS DOOR-LEFTHORN-BRAZE SIDE ONLY32 3/32 M W JOINER F-IDF-IDA 1/4 BALSAI SHEET II II F 16 3/B BALSA SHEET RUDDER _______ II II 1/32 BRASS MAZE JOINT BDLDER WASHER ON 1/B MW 015 BRASS STOCK 5/32 DIA BRASS TUBEI/B DIA MUSIC WIRE BRAZEBOLDER ON WASHERS JOINT DIA WHEELB TAILW HEEL /ERIND IS I/3D PLYWOOD RITY-SEE TEXT I/IBDIA DOWELS MODEL AVIATION SHORT STERLING DESIGNED S DRAWN BY FRANK B BAKER INKED BY JOE DEMARCO SHEET OF 3 ALL RIflMIA don Both vertical fin stabilizer covered %2 sheet balsa sure keep assemblies light possible Cut out rear center section eleva tor set aside Also fabricate steer able dual tail wheel assembly rud der control horn assembly fuselage dry trim ply wood former 14 end line former 14 its rear ring former join Now comes critical part op eration Measure front fuse lage slots between formers 6 6A 10 10A located mark Also measure up top formers 6A 1OA fuselage side mark chord line wing rib #2 Due taper wing rib shorter distance former 6 10 t horizontal section leading edge bE trailing edge TE Use X-Acto knife Zona saw cut plywood formers 6 10 goes well should cutting between two formers Also cut along line drew fu selage side bit luck should able lift out lower fuselage section point next stage complete rear fuselage Drill /32 hole through up per fuselage stringer insert rudder control horn through Install steerable tail wheel assembly making sure moves properly rudder horn does hit anything Now remove rud der horn elevator assembly installed next Cut away side stringers accommodate elevator leave enough former 14 support LE elevator #15 support rear elevator spar Install elevator assembly 20 angle inci dence glue place sure check alignment front fuselage install servo rails mount rudder eleva tor servos Cut nylon tubing front compartment accommodate servos connectors Run length control ca ble down elevator cut length Insert Y16 music wire Z-link elevator control horn solder ca ble Pin elevator neutral cut cable servo end accommodate adjustable quick link threaded connec tor Cut template posterboard cover rear fuselage above elevator Once fits cut out shape plywood Lo cate hole rudder horn drill Again put epoxy glue along upper stringer attach plywood stringer March 1989 29 p LSA LONGERONS F-ID DOWELS BLOCKS ET FROM K WITH ELS Y 17fN\ / 3/B SO BALSA OUTBOARDAND ENGINE LEFT WING PLANNACELLE BINBOARD 1/2 H/2 BALSA LEAOING EDGEENGINE __7SOFT BALSA BLOCK__ 11 24LLIf TIPI4LIIJIJ4 NIf-11---llfr-T~ffRS1R4 iThEDI\rlW/4 1/32 AND 1/16 BALSAIAI -4--SPAF NOTE SEE RI HT VAIG FL FUR PUSHROABLE LAYI BALSA SHEETI VIA BALSA7/i UNAT INj /i FiBERGLASS COWL-ii----1t MOTOR MOUNT r I I/B BRASS TOBE NOTE SEE SHEET 3 FOR-FUEL TANK FILLER4IlzNJj NACELLE CONSTRUCTIONFIBERGLASS -------- F- 5FUSELAGENACELLE SIDE RAIL--NACELLE SIDEIMOTOR _____ I/IS BA 3/32 BALSA SHEETTOP B -TOP SAD BOTTOM ROUNOELS __ __ RIGHT WING PLANON TOP ONLY ENGNE----ItONLYRSHTWNG27-----3/32 BALSA ______-UESHEET RIBS -NOBBYLOBB--i~7iz-YL R-12R-13R II32 PLYHLH BOB r SERVO___ -SPAR BRACESPUSRRODSlAB BALSAfTi- - - SHEET TOPK ____W BOTTOMBALSA- GUSSETS LIBI/4 . B BALSASPRUCE SFBRS 1/16 PLYHORN MOUNT/I/I SFEET TOP B BDTTOI9 TOP B32 BALS B BALRIBS IHEET SOT ~-//-AILERON NACKLLE FZrIiOUTLINE-NOTE AILERON TRAVELAILERON CROSS SEC IL/B BALSA UP B ___L6 BALSA SHEETJTT RIB I1t~----TOP B BOTTOM dt--I/B I/4 SPRUCE SPARS NI TRUSSES/~I3/32I/4BALSA CAP STRIPS __1/4 BALSA SHEET VERTICAL GRAINRIBS V32 PLY BOTH SIDESWING PLAN FRONT VIEW Insert rudder control horn bottom install A6 music wire link tail wheel steering mechanism Wrap rudder control rod sticks above fuselage some masking tape cannot slip back down inside fuselage Insert %6 music wire Z-link rudder horn Slip proper length control cable rudder tubing solder Z-link Spot glue vertical fin fuselage insert rudder control rod rudder glue connect rudder binge pins Hold rudder neutral install quick link assembly servo end point hook up rudder elevator servos radio exercise controls Everything should work smoothly have proper range motion Once satisfied controls work rear fuselage can toned up Wet down plywood liber ally apply glue fuselage formers bend down plywood will need use combination tape pins hold place cut out plywood bottom fuselage glue Cut out necessary parts front fuselage glue place re gion former 1 3 covered t balsa used some 4-in sheet soaked water-ammonia solution covered area easily Carve nose tail blocks rough shape glue place final shape sand cockpit carved balsa block fitted fuselage Use Red Devil Onetime spackling compound fill cracks joints give fuselage good overall sanding 220-grit paper Carve upper turret coam ing attach Also install balsa far ing between rudder fuselageas well section elevator goes between movable part fuselage Wing Construction begins main spar spar bit unusual very light strong First cut out dihedral braces 42-sheet plywood about 30 long laid out use sheet properly plywood should available Pin braces down building board glue x A-in spruce spars top bottom Note A-in di mension vertical use white glue install x A-in pieces spruce form Warren truss Let glue dry glue other dihedral brace top assembly Mark rib positions along plywood dihedral brace Cut out ribs 3A2 balsa Use fine-line marker pen draw centerline rib both sides Cut out sec tions ribs 1-6 correspond spar 30 Model Aviation Full-Size Plans Available See Page 188 .---1/16 BALSA SHEET TOP BOTTOM R-II4SERVO RAIL_______ 3/16 BALSAI/IB BALSA T E SHEETING H-IR9 xr----- 1111-IR-B---_ -V1.--___ 0 -0 ~O OCK 1/21-1/2 BALSA LEADING EDGE BALSA ET____ R2 SPECIFICATIONS WING SPAN74 FUSELAGE LENGTH65 STAUZER LENGTH 20 ENGINES .POUR 15S R-14 R-13I/B I/4 SPRUCE _________SPARS ooq ----- - 3/32 1/4 BALSA CAP STRIP 0/32 BALSA SHEETING1/16 BALSA SHEETING 0000_____ 4 1/41/B SPRUCE TRUSS SEE WINO FRONT VIEW 0 _______ 2 PLY SPAR BRACES TRIM OUT3/16 BALSA SHEET SOFT BALSA BLOCK TIP 3/55 BALSA RIB / 1/4 3/B BALSA/ LEADING EDGE / I/I6 BALSA 3/32 BALSA RIB ~STABILIZER A - I/B BSLSAt\SHEET NOTE ALL WING RIBS ARERIB 3/32 BALSA SHEETIII SHOWN FOR CLARITY 1/4 BALS SHEET F 3/32 BALSA RIB NOTE STABILIZER IS SHEETED WITH 1/32 BALSA TOP AND BOTTOM NOT 1/16 BALSA SHEET RIBS HINGE LOCATION 2/32 BALSA RIB I/A 3/B BALSA7 LEADING EDGE I/A BALSA TE BALSA SHEET RIBS ELEVATOR TRAVEL UP DOWN NO S*TINS ON 3/35DIA JOINER TRIM TO PIT PU SE L AGE LS BALSA / RIB ELEV II 1/4 BALSA SHEETMAKE S 1/IS BALSA SHEET T E ENGINE AILERON SERVO AREA assembly Now glue rear sections ribs 1-6 dihedral brace sure tips ribs panel form straight line lines drawn ribs will help ensure ribs properly aligned Once glue dry remove sembly board install fronts ribs 1-6 Slip ribs 7 through 14 between upper lower wing spars spot glue place cyanoacrylate glue CyA Try build about washout rib 14 Now sight down ribs make sure properly aligned Also sight front rear wings make sure warped properly aligned glue ribs 7-14 white glue stall leading trailing edges well webbing between ribs ran trailing edge way out rib 14 though aileron area will discarded later allows check wing STABILIZER & ELEVATOR RIBS 0I23426 alignment Install A-in balsa aileron spars wings Note spar goes through hole rib 8 give better strength outer wing panels might well build ailerons Cut out sheet /1B balsa forms core Glue A-in LE sections /16 sheet rib posi tion both top bottom Rough carve aileron shape pin wing final shaping Install hinges horns finish job quickest simplest way building ailerons have found Install servo rails sheet top wing spar LE rib 1 rib 10 Y32 balsa Carve leading edge shape cut out hole top sheeting servo compartment Feed nylon tubing engine controls ailerons through ribs Note enMODEL AVIATION SHORT STERLING DESIGNED B DRAWN BY FRANK B BAKER INKED BY JOE DEMARVO T2OF 3 ALL RIGHTS RESERVED gine control tubing has different place ment right left wings comes out through top wing sheeting sure leave plenty excess length engine control tubes exit wings nacelles plus engines longer think Again use some RTV silicone hold tubing place Run some cable through tube make sure moves freely Now add % sheeting bottom leading part wing /16 sheet top bot tom indicated plans cut out aileron servo hole Next wrn fit wing fuselage Cut sheet % balsa fit top wing fuselage sides contact wing Mark centerline chord leading trailing edges Align chord line wing chord line fuselage wing 40 angle inci dence Mark rib outline pencil March 1989 31 Left gluing ribs spar Important keep trailing edges properly aligned prevent building warp Use favorite method keeping everything square Right Because /-in plywood skin thats used sheeting minimal 1A-ln balsa fuselage frame required root airfoil has cut 1Am balsa wing saddles facilitate removing lower fuselage section after skinning cut away plywood Use Dremel sanding drum trim upper fuse lage until wing fits snugly Check wing alignment directions same thing bottom fuselage section removed leave about 1/8 excess Put wing inverted fus elage trim lower fuselage sec tion until flush rest fuse lage bottom Glue section wing Fabricate two /16 aluminum plates drill position fuse lage drill pilot holes #6 sheet metal screws Wax screws screw maple rails under ply wood plates very strong yet un obtrusive means holding wing Fabricate fuel tanks tin plate bend landing gear parts Cut out nacelle parts Coat plywood firewalls epoxy glue fuel-proof stall engine mounts glue fuel tanks firewall epoxy Start inner nacelles Mount 332 sheet inner nacelle walls 1 /2 o out-thrust Set wing 40 adjust formers until horizontal centerline O will result engines having 20 downthrust Glue firewall formers additional 1 0 out-thrust total out-thrust engine should 3 . Add nacelle formers 2 3 4 Solder length Y6 brass tubing % main landing gear legs place 4-in Zinger wheel tubing insert other landing gear leg solder careful overheat brass tires vinyl melt quite easily Cut out three sections /8-in Siglite /32 plywood formers landing gears use epoxy glue sandwiches together music wire middle Bevel front sandwich fit wing nacelle contours same rear Cut lower nacelle keel A-in sheet balsa install press fit whatever other trimming needed make two landing gear plates fit Glue landing gear plates wing glue lower keel Note though nacelles have 1 out-thrust wheels must parallel fuselage centerline Install music wire landing gear crosspiece using copper wire bind rear A-in music wire landing gear support % main gearand apply solder Again keep heat away wheels vinyl melts easily Feed engine control nylon tubing through firewall hold place RTV installation outer na celles follows basically same proce dures sure thrust lines outer inner engines same both have 30 out-thrust Install engines ailerons engine aileron servos Run appropriate ca bles solder threaded connectors cables quick links engines ailerons Again hook up radio exercise controls engine throttle controls should especially free moving operate unison over same range Cover nacelles /32 sheet balsa has soaked ammonia water Cut some lengths A-in aluminum tubing fit between nacelle landing gear crosspiece Use Dremel tool cut slot length tubing Fill tubing auto body putty slip over A2 landing gear wire Close gap best can add some body putty will add some diameter landing gear legs plain music wire looks too skimpy 32 Model Aviation Above Warren truss made oil/s x 1Am spruce spars top bottom / plywood fuii-depth shear web front back resuiting spar both iight strong Right gluing ply wood skin held fuselage frame rubber electricians tape author brazed steerable tail wheel together modei Double former pro vides additional gluing surface skin engine cowlings made fiber glass cloth Hobbypoxy 2 glue using balloon method used wood lath turn down form pine block Finishing Once construction com pleted give whole airframe final sand ing wipe clean tack rag wing nacelles rudder elevator covered Goldberg Colortex gives result comparable medium-weight silk fuselage given brushed coat Sigbrite primer sanded away followed sprayed coat primer over whole airplane camouflage pattern used shown Profile 142 photographs ac companying article show general pat tern used whole upper surface sprayed coat Cheveron dark earth get dark green ar eas set up spray gun finest pos sible pattern masked edges spray edges full-size air craft rather being masked upper parts aircraft masked off color separation line black whole bottom plane rudder sprayed Cheveron flat black Two summers ago went Eng land visited number British aircraft museums express purpose see ing what colors actually used WW II Cheveron dark earth dark green ap pear authentic Color photographs Sterling purchased prototype full-size aircraft match perfectly models used gray paint Plexiglas areas Drill 1-in vertical hole balsa nose roundels lettering block bottom Add lead weight masked painted never can find decals until center gravity CG that right size odd-scaled Continued page 106 I-IL 0 p p 1 0* JLLJ00 0L2 7LU 00 z-L 4-00 0 4W z hi zI 4 1r Na w -J -J IiJ C z C 0 z 4 1 / \ N P ' 4OL Nfl 0 030 4NJp 0 2Ci 1 II 00~ 0a 4 N 4 -4 0c 4 0 Jz hi W4 o C. 0 I. hi hi CO 0 C 4 hi 0 0 hi z 0a 40 aN N SI 4 I0 z hi 0 4 -J hi C 3 U U 1 0 01 U 0 0 Co U 4 U U 0 Co 5 U March 1989 33 sheet metal fuel tanks built engine nacelles will covered %2 balsa sheeting cable nylon tubing used connect aileron Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation