NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft
Edition: Model Aviation - 1986/05
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
NO OCR TEXT NO OCR TEXT Sitting Runway 16 Spirit Lake Airport Extra 230 model displays Its sleek lines brilliant colors Clint McKenry will fivina fuIl-Ie nne et Aernknth-a wr thie eiimmev IAsnmet 11 7 Fnnlnnd nur author will entering RC Giant Scale events aerobatics instructors center Brian could quit saying good things about Extra 230 knew after conversation him would flying model Extra 230 before snow flew fact flew first model just 21 days after phone calland Byrons Fun Fly 85 Plenty room detailing cockpit 1/s-size pilot figure Knights Air Removable cockpitarea held place Nyrod see pians/textforthe unique system 32 Model Aviation Jim Van Loo holds up Extra show easily Sacha 34 fits inside cowl can mold yourown fiberglass cowl orgetoneother parts too Spirit Lake Hobbi-Craft Removal front cockpit hatch provides easy access radio tank compart ment ample room radio instailation want enough space make tempting clude smoker system some other goody great lakes region Iowa actually Spirit Lake home model Extra 230 full-scale resides Pompano Beach FL full-size Extra 230 German midwing monoplane designed built Walter Extra plant Flugplatz Densloken FR West Germany Wal ters prototype flown 1984 Aerobatics World Championships Hun gary Eric Muller CAP-2 1 fame Readers may remember coverage event September 1985 Model Aviation Muller flew airplane respectable sixth place though few hours practice time paint trim Extra 1984 WC white black yellow red green accents very similar Diablo Clint McKenry now flies same airplane new colors painted Pompano Air Center colors Brian Beckers new Extra 230 redwith blue trim white accent stripes recent con versation Brian told Extra 230s will colors until someone wants different scheme three sale written Clint McKenry switched Pius Extra 230 after watching Muller 1984 WC Competition results indicate decision good Fond du Lac WI placed second 16th Annual IAC Championships During week September 2 1-29 1985 again placed second US National Aero batics Championships Sherman/Denni son TX secured position him US Aerobatics Team World Championships held England dur ing August 1986 Clint missed winning first place team trials just 12 points Brian said Clint went outside judging box some corners fudged musbing rather being clean crisp outcome might have different thanks Brian Becker Jean Sorg editor Sport Aerobatics help background information about Extra 230 Fuselage construction Cut engine tank box -in plywood box length determined engine used size shown plans Quadra 35-50 Glue sides top bottom together Epoxy Y2-in triangle stock inside engine box flushwith front Wipe excess epoxy fronts triangle stock firewall has glued pieces Glue firewall box set unit aside Glue engine box F-i Glue -in mahogany F-2 flush top edge cutout Join engine box assembly F-2 Glue -in plywood landing gear supports Cut fuselage sides -in ply wood 48-in stock used will necessary make 4-in extensions glue Lay fuselage sides plans mark former locations Glue top -in mahogany stringer flush top fuselage side bottom stringer glued half extends below bottom fuselage side Cross sections F-i through F-7 show way to use fuselage formers Left model 0 size necessary use separate servo Tor eacn alieron uhieidea wire tne receiver win neip reouce Ignition noise interference Use 4-40-size pushrod servo aileron Right T-3 aluminum landing gear supports Extra May1986 33 spacing planking front bottom portion can attached sides Assemble fuselage upside down over pians letting F-i approximately 2 m fuselage front hang over edge workbench Note flat fuse lage top point provides excellent platform receive rest structure Overhanging workbench isnt prob lem sides curve formers fall line Glue F-i through F-7 place Glue m-sq mahogany stringers fonners Glue F-lA lB Wet -in balsa planking outside will bend around bottom easily Apply planking bottom Cut out planking accept landing gear mount Mark drill tap -in landing gear mount Two -in tri angle reinforcements can glued landing gear supports providing sur face gluing landing gear plate gear mounted nylon bolts will break away event hard landing Install landing gear plate epoxy glue Glue -in-sq mahogany tail wheel plate supports rear F-7 halfway back fuselage between F-7 rear fuselage Glue -in plywood tail wheel plate Glue n balsa cap strips rear stringers Cut glue -in tapered balsa stringers tween F-4 F-7 cut little large allow sanding shape make templates hot-wire-cutting foam parts Formica material can sanded smooth lets cutting wire glide easily very smooth cut use Nor-Ray foam-cutting machine Cutout foam front rear decks help assistant Glue n balsa strips bottom edges rear deck provide gluing surface attachment fuselage Glue x 34-in balsa strips sides Sheet rear deck 6 balsa Glue -in cross grained balsa front rear deck sand shape Glue -in Lite Ply rear Tack-glue seoond former rear will removed later tail assembly added Sand fit glue rear deck fuselage Build fuselage front deck same manner Add F-3A rear canopy preparation planking sanding area Tall parts built -in-sq balsa straightforward way However note -in plywood tail post support should marked hinges hinge slots should cut before glued place will difficult slotting later Cut fin/fuselage fairing pieces -in balsa tack-gluing -in-sq center fin goes -in-sq Left tall assembly removable ease transportation Two 6-32 bolts support wires made quick links hold assembly place Right Dual pushrods elevators rudder provide positive control Strong tail section mahogany-reinforced plywood 34 Model Aviation engine mount box assembly should built before starting fuselage construction Make sure square important accurate alignment entire model assembled model just prior tinishing point start realize nearing completion Cover MonoKote white trim done automotive striping tape Jim displays underside trim Dick Downing working -scale version Extra 120 four-strokes expected would flying April 3/8 50 BALSA POST EXTRA 230 DESIGNED BY RDOWNING B JIM VAN LOO 3/4x3/8 MAHOGANY FRAME FLEX PUSHROD HATCH PIN CLEAR PLASTIC CANOPY N N 1/16 BALSA SHEET OVER FOAM CORE K fTT 6-32 BLIND NUTS I/B PLYWOOD I/B PLY FUSELAGE SIDES 3/8 x 1/4 BALSA 3/B BALSA SHEET -2 -I > /8 50 BALSA----- 3/8 HARDWOOD BRACE WIRE ATTACH POINTS C B 1/4 SCALE TAILWHEEL BRACKET 2 DIA TAILWHEEL WING IS 1/16 BALSA SHEETING OVER FOAM CORE K 4 014 SPINNER I/B PLYWOOD BUILD TO SUIT ENGINE USEDI/4SQ MAHOGANY STRINGERS 1/4 PLY L G MOUNT 3/16 T-3 ALUMINUM 1/8 PLY 4 DIA WHEEL BALSA BLOCK I/B PLYWOOD 43/4x 1/2 BALSA LE FOAM CORE NC AILERON SERVO ON MOUNTING RAILS 2 3/4xI/2 BALSA TE K 1/8 PLY strip bottom can sand difficult piece shape fuselage Cut two -in plywood tail-mounting brackets notch fuselage hori zontal stab accept Drill holes shown plans 6-32 bolts blind nuts blind nuts glued plate stab matching plate fuselage will glued tail assembly mounted Hinge rudder elevators Wing cores other foam parts cut foam can obtain local insulation firm should virgin foam least 1-lb density Hot-wire-cut cores spar locations exactly shown plans takes little longer build wing panels way large airplane wings must allowed flex building panels way full-length full-depth spars embedded foam sheeted arent able twist wing panel get flex Glue spars foam cores contact cement epoxy Sheet wings Yi6 balsa add leading trailing edges Cut out root ribs glue now Measure cut ailerons rear spar makes excellent trailing edge truing leading edge aileron Try get minimal gap between wing aileron have aileron flutter surfaces either sealed un sealed however roll rate much better ailerons sealed servo used aileron Cut mounting holes add servo rails install servo just wheel shows servo pushrod 90 hinge line Cut hole root rib servo extensions make tunnel foam aileron extensions heat piece -in music wire slide through FRONT V REARvsPLT FORE DECK FOAM CUT PATTERNS A 4 DIG SPINNER I/B PLYWOOD WO L2IAAROOONY TRI- STOCK AND FOAM PARIS AVAILABLE FASM VERIT LARD HSBBI-CRSJT MABOBAWY AUSEETS PLYWOOD FjK LYWOOS V8 BALSAF-2 CB PLYWOOD I7 K 4/ /4 SC VB BALSA SHEET 3/43/8 MAHOGANYCLEAR PLA SEE ABOVE FOR OK PILOT FISORE -I/BBALSA WWET016 BALSA SHEET F-IAOVER FOAM 4 FLES POSI4ROEI/B PLYWOOD -SOILS RATC1I PIN-SEETO SOIT ENGINE OSEDVSBALSA TEOTSHEET______ ~2YZZzT-zz___ 7 VASO MAHOGAlED ARPLY _______ ENGINE LY FPLS ES VERTICAL PLAIDS COADHA 30-SOC, FlFIA -IAFO A4PLYLGMOLN4TClG foam servo area After sanding wing panels ready mounting Alignment key well airplane will fly Assembly look closely picture fuselage bench will notice small blocks under front actually tack-glue bench airplane fuselage blocked engine thrust line top edge F-2 level Before secure fuselage bench necessary cut out spar locations fuselage sides hole cut Dremel tool front F-2 F-3 right side behind F-2 F-3 left side Slide root ribs onto spars dont glue yet secure fuselage slide wing panels tight against fuselage sides Check 00 dihedral incidence Clamp spars recheck alignment thing set drill -in holes through spars formers use carriage bolts washers both sides wing nuts hold wings fuselage together Remove wing panels Slide off Model Aviation Ireu aul 36 wing panels ueeiage DoTore ariiiing inc v4-In mounting notes wmsn rs power drill room 2-In bIt good time uses broken Full-Size Plans Available. See Page 180 PASO MAHOGANYI/H LIVE PLY HPLYSTRINOERSAGPLT UTE PLY F-S BALSA8GAGAHUNT F 3I/O BALSA F4S~ElVA BALSA TAPERAPS SHEET U MAR SAN __F 7A TURTLE DECK FOAM CUT PATTERNS SPECIFICATIONS SCALE .1/3 WING SPAN96 WING AREA1290 SOIN WEIGHT EtY17 LBS WING LOADING 28 OZ ISQ FT F3FFUSELA EWTAIL WHEEL GETOPlUG PLY FUSELASA SIDESTAIL GRACE WIREGA ET ATTACHMENTS F-H r 7 IUGPLY TAIL/I MOUNTING PLATE lUG BALSAVG BALSAAIRE ATTACHMENTS AG BALSA47MAPLE GRACE I-----TYPICAL I/O BALSARINSE LOU I/B BALUASHE P34FAASHEETVGA BALSA GREET OVEG FOAM CUREI/H 3/4 BALSA __FIN OTHI [v34][b-2-10-1-10]]35 SA BALSA 3A RUD _____I/B LITE FL/ _________FTA IAG PLY /SAUGLER 3 H 55 GALSA STAGPLSTE SLUT BALSA PLY UPPERSHEET VLSA LOWERI/H PLY TAILUHNEEL ~---F 6BRACRET MOUNT p5 V4OO MAHOGANY STRINGERSMODEL AVIATIONEG I/A SCALE F-UTAILWHEEL BRACKET EXTRA 230 FUSELAGE SIDE VIEWDESIGNED BY H DOWNING S JIM VAR 2 014 TAILWHEEL TRACING BY JOE DEMARCOSHEET OF 2 root ribs coat ends panels epoxy Return root ribs panels put spars back fuselage Put piece wax paper between spars formers install carriage bolts secure wings solidly Recheck alignment Fold wax paper over top spar glue -in mahogany alignment guides place Any gap between wing panels root ribs can filled Model Magic filler after epoxy dries Now tail assembly fuse lage secure place piece wax paper between two -in plywood hold-downs horizontal stab bolt together Remove shaped tail fairing fuselage remove second -in ply F-7A former Place wax paper between fuselage stab cutout hold-down mount Place horizontal stab fuselage check aligmnent wing satisfied remove stab apply 5min epoxy fuselage replace stab hold level After curing drill two holes rear formers shown plans Cut rear fairing apart andtrial-fit vertical fin fuselage fairings place Remove everything insert two -in dowels holes drilled rear formers Slot fairings accept dowels satisfied com pleted assembly glue together used 5mm epoxy work fast good triangle needed get proper alignMay1986 37 Front area fuselage under construction shows plenty room smoker tank hind fuel tank Equipment area could hold redundant radio system desired ment vertical fin Glue n strips rear fuselage tail support alignment Rear tail support wires made quick links solder links can now made installed support wires must horizontal stab would strong enough during maneuvers Naturally youll have re move supports prior covering Install tail wheel used CB Associates -scale assembly Make wheel pants balsa blocks -in plywood can purchase 10-in fiberglass wheel pants Cowl mounts made 3/4 x -in mahogany pieces placed around F-i Cowl cutouts dictated particular en gine used cowl held place sheet metal screws hatch retaining pin made section standard flexible plastic pushrod material Shape scrap balsa block glue inside cowl shown plans hatch place fuselage drill through F- 1 sheeting front hatch drill bit provides snug fit outer plastic tubing Remove hatch Drill cowl balsa block sheeting back end hatch same size bit Run apiece outer tubing through hatch glue place Cut length outer tubing sufficient pass through cowl F-i balsa block Insert end tubing F- 1 Glue piece pencil lead end inner tubing Place hatch fuselage Push inner tubing through outer tubing glued F-i through outer tubing glued hatch pencil lead contacts F-4A will make mark drilling Remove hatch drill F-4A mark Line hole NOTE SPAR DOIIRLEBS OS IN FBONT OF SPARS ON RIGHT WINS AS SHOWN AND BEHIND SRS ON LEPT WING 3/B SO BALSA 3/B SO BALSA POST_____ LEADING EDGE MAPII BRACE WIRE/ ATTACHMENTS U RUDDE BALSA BLOCK SBEET I/B PLY I/H PLY SHEET HP FRONT VIEW BALSA BLOCK 4 WHEE SlOE V EW BALSA PAIRING WHEEL DETAIL 0B PLYWOOD I/BLITE PLY I/B PLYWOOD FRONT VIEW 3/IB T-3 ALOMINOM LANDING GEAR PATTERN TOP VIEW I II 110 II I II II I/Il Left Wing panel spars reuy RUE auuemrny 11gm R556DIOO wing pansi snows ins TuII-lengin spars inai proviac increamois sirengin Continuous aerobatic maneuvers place tremendous load wings essential rigid totally free flexing Left Bottom fuselage shows details stringers landing gear attachment Gear mounted nylon bolts designed break away hard landing Right fuseiage assembly finished cabin area number parts such canopy can purchased 38 Model Aviation Full-Size Plans Available. See Page 180 1/16 BALSA SHEETINGOR 3/H I/O BALSA L C 3/41/2 BALSA TE HINGE1/8 LITE PLY VA PLY3B" 02 RAWING TIPDETAIL FOAM COREWING ROOTDETAILI/A PLYLEADING EDGEVA BALGA-TAPER AS SHOWN I/B PLYAILERON WIRE ___WING PLAN RIGHT SIDE I/IA BALSA SHEETING GOLERON GERVO _____zIzII u2iizizizIjjijj1jjj$I1FOAM CORE CUT FATTERNSROOT 04 PLY AILERONTIP HORN MOUNT 1/B BALSA SHEET END CAPS ALGA RAE / I I p 1* PLY ELEVATOR I -L - BALSA jiSHEET t\17 _ 3/B HARDWOOD ABACE WIRE ATTACR POINTS1/B PLY I/B PL Zz 6-32 ALl NUTS 3/AGO BALSA3/B I/A BALSA ___ short piece outer tubing Install cowl drill hole sheet metal screw through cowl mahogany cowl mount directly over hatch pin screw should long enough lock hatch pin place tight cowl place trim outer piece tubing glued F-i flush front cowl Cut inner tubing proper length run through cowl hatch F-4A Place 2-56 screw flat washer end inner tubing Equipment covering plenty room fuselage let builders imagination rule whatever kind equip ment installation desired dual elevator pushrods smoke system etc Similarly large space cockpit area lends itself much detailing desired model shown pictures covered trimmed MonoKote cowl wheel pants painted matching color White striping automo five trim tape total weight model Quadra 35 17 lb balance point May1986 39 CAP 3/AGO BALSATYPICAL BINGE LOCATION I0 MODEL AVIATION EXTRA 230 LOD BALSA BLOCK SHEET 2 OF 2 DESIGNED BY R DOWNING B 1M VAN TRACING BY 30E DEMARCO completed tail surfaces Text has detaIls easIly construct tall falrlng 40 Model Aviation should within /z in front behind center gravity CG marked plans depending sensitive want aircraft sensitive rearward CG balanced model moving 10 Ah battery packto rear case Flying Dick Downing owe much credit part producing design prototype model ready go arrived house quick trip flying field two taxi tests ready air Gene Sauter good friend hand video camera along contingent Spirit Lake modelers wind right down runway about 15 mph throttle applied Extra rolling After about 100 ft Extra lifted off climbed straight out cheer encouragement everyone present hat size immediately became too small flew Extra about 15 minuteslooping rolling snap ping making low passes Time landing throttled back kept nose down flaired about 6 ft off ground no-bounce three-point landing have video prove have flown airplane times since subsequently changed Qua dra 50 new airplane shown pictures article has Sacks Dolmar 34 engine am impressed smoothness response Sachs powerhouse can bore holes faster climb faster anything can imagine throttled back Extra 230 same docile airplane Quadra 35 may interested cowl canopy landing gear foam parts model available author Jim Van Loo RR 1 Box 28B Sergeant Bluff IA 51054 phone 712 943-4103 size todays cars nice Extra can broken down point two can easily carried Datsun Pield assemblytakes about 10 minutes Vt Looking much like Stephens Acro full-size counterpart model mum promising new airplane 1984 Aerobatics World Championships held Hungary remarkable smoothness takeoffs landings reminiscent trainer plane moves crispness groovi ness appeals much veteran pilots Decal lettering based McKenrys prototype can obtained Spirit Lake Hobbi-Craft