NO OCR TEXT NO OCR TEXT NO OCR TEXT shut-offs throttles Speed simple just have take off get pylon fly level need good engine stable airplane dont look over speed trainer 21 Sport Speed Its easy build easy fly several good engines available power some quite inexpensive present AMA rules Sport Speed allow profile models flown competition have build fancy Speed model magnesium pan streamlining monoline tuned pipes other trick stuff would excellent model Juniors Seniors fly next years Nats usually few entries successful flight has good chance win trophy can start inexpensive engine like event can get faster powerful put same airplane model will go 100 mph good engine dont think its pansy single wheel doesnt add much drag makes takeoffs simple saves props experienced builder wont have trouble building model Ill try explain everything Construction Solid balsa built-up wing Covering/finish Epoxy and/or iron-on film January1995 83 Homemade brass tank holds about ounce fuel Aluminum plate under engine absorbs vibration increases rpm landing gear can simple sheet aluminum titanium shown round music wire can used K&B 21 starts easily crankcase pressure runs steadily does well over 100 mph APC 7 x 6 prop profile-fuselage Ten Penny fancy model very effective Spinner looks neat helps starting Flying weight 20 ounces ATier flying Ten Penny Stunt/sport racing flier Skip Spoula sons Ryan Mall ready Speed competition 1 02 WING WEIGHT OR TEN PENNYS 118 BALSA RUDDER K & B 21 SHOWN SPINNER - N EE WINO TIP CROSS SECTION 3132 PLYWOOD DOUBLERS BOTH SIDES 3/8 X 112 HARDWOOO MOTOR MOUNTS IllS TITANIUM OR ALUMINUM GEAR 1 TO 11/2 CUT OUT TOWHEEL CLEAR ENGINE ALTERNATE 1/a WIRE GEAR I' Lv C ROO / 3/6 BALSA FUSELAGE 3/32 OD BRASS LEADOUT GUIDES 7W ALTERNATE SOLID BALSA WING 41 1164 PLYWOOD BOTH SIDES 1/16 PLYWOOD BELLCRANK MOUNT V7F 1/8 BALSA STAB & ELEVATOR NOTE THREE TYPES OF HINGES SHOWN SEE TEXT FISHLINE HINGE EASY HINGE CLOTH HINGE TEN PENNY TRAINER DESIGNED BY GLENN LEE 1/16 SHEET TOP AND BOTTOM WING CENTER CROSS SECTION 0 0 CD 0 CD CA CD CD CD Ca CD -L 0 beginner can understand CONSTRUCTION Look plans over carefully before starting build decide what part want build first usually start fuselage glue drying can work other parts Pick out piece good firm rock-hard 3/ x 3 balsa buy saw out hardwood engine mounts can square I8 x /2just sure same thickness fuselage balsa Saw slots mounts jig saw band saw distance between fits engine try get reasonably close fit dont have power saw just use X-Acto knife trim fit Notice plans show fulllength plywood sheet both sides fuselage extending under nose doublers plywood can either IM /32 greatly increases strength crash resistance fuselage well worth extra effort Cut plywood least 1/2 inch oversize around can trim shape after gluing Glue two sheets engine mounts fuselage epoxy aliphatic resin woodworkers glue clamp weigh assembly down thick piece plywood other flat surface Put waxed paper down first dont glue fuselage board After glue has set dry trim excess thin plywood sheets shape fuselage Now can add I32 plywood doublers front Cut two pieces shape taper back edges streamline little make blend fuselage Before glue doublers fuselage locate position accurately time pounding small nall brad through plywood little way fuselage nails will hold pieces place glue clamp Remove nails after glue dry round corners test-mount engine streamline nose area Wing If cannot build hesitant build hollow wing shown can use solid balsa mount external control system solid wing can thinner built-up wing since bellcrank doesnt have inside hollow wing probably faster air though thicker external controls add lot drag built-up wing looks lot neater Whichever wing decide build must strong model weighs 20 ounces K&B 21 engine pull test will 60 pounds wing-to-fuselage joint must also able take pull have take extra pains make joint capable taking load decide go solid-balsa wing cut shape medium heavy 1/4-inch wood carve airfoil shape block plane carving knife sanding block alrfoil can flat-bottom symmetrical either will fly okay can change profile shape anything preferjust keep about same size After wing has sanded glue center /8 plywood reinforcement leadout guides place Carve hollow wingtip weight wingtip weight necessary keep airplane rolling takeoff must use 020 diameter solid music wire lines 60 feet long meet rnles heavy About ounce weight enough can chunk lead hobby shops sell can combination washers lead shot coins about right weight Use postal scale measure have go post office grocery store use scale ounce equivalent about ten pennies gives idea name airplane comes Epoxy weight near outer wingtip smear glue over weightyou dont want coming loose Glue piece fiberglass cloth over make sure stays place build hollow wing start sheet /16 hard balsa cut shape shown either buy piece wide enough splice narrow sheets together instant better known cyanoacrylate CyA glue NEED RIC ACCESSORIES FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# -IIz 6 Buffered Y harness 7354# JIz 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiIi 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part #followed Airt J Put S HitecIRCD& JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver wNelcro 8480 hit RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 January1995 85 B&P Associates Gives Total Flight Line FREEDOM new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 PRECISION MODEL PRODUCTS z7v Made n USA BARSTOCK ALUMINUM SPINNERS RetailApprox Part No SizePriceWeight TT-1 502-B 1112$149505802 TT-1 752-B 13/4159509502 TT-2002-B 2189510002 TT-2252-B 2114199516002 TT-2262-B 2114 FAIl. 219515002 TT2502-B 21/2219519002 TT-2512-B FAt2395170oz TT-2752-B 2314269522002 TT-2762-B IFAt. 289520002 TT-3002-B 33095260oz TT-3012-B 3 FAt 3295250oz TT-3252-B 31/434002 TT-3502-B 31/25495 470oz TT-3752-B 3314520oz TT-4002-B 4799557002 3 Pieces Cone Back Ptate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner RetaitApprox Part No SizePriceWeight TT-01 40-A 1/428 .$595 061 02 TT-0147-A 1/428/7mm595 061 02 TT-0810-A Ox 10mm595 z TT-0710-A 7x 10mm595082 02 TT-051 6-A 5/1624 076 02 TT-0518-A 5/1624/8mm595076 02 TT-0810-A Ox 10mm595 2 TT-0825-A Ox 125mm595 07502 TT-0375-A 3/024 .695 02 TT-0125-A 125mm695llSoz 3 Pieces Nut Washer artd Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 thickness wing varies about /2 inch center about /4 tip reduce frontal area I8 x 1 leading edge probably easier taper after assembly glue place top sheet glue drying cut I8 thick piece goes just behind strip makes easier put top sheeting taper 1 /32 high center I32 tips glue against back leading edge CyA Glue /16 plywood center reinforcement sheet place sure good joball pull-test load goes through part Cut ribs balsa sheet making cardboard thin metal template shape shown plans ribs have same top curve just vary height match support strip just behind leading edge Glue ribs place get bellcrank leadouts ready items tip weight have installed before put top sheet bellcrank can commercial 1 /2-inch unit larger cut down leadouts can heavy braided type cable solid 1/32 music wire Just sure loops well wrapped soldered securely remove soldering flux hot water soap coat joints oil wont corrode later Run leadouts through two /2-inchlong pieces I32 OD brass tubing before making end loops Make leadout same length have external reference bellcrank position after wing completed Bolt bellcrank place 6-32 bolt comes out bottom wing nut screw extension will epoxied fuselage help take pull test Cut notches wing ribs leadouts go epoxy brass leadout guides wingtip pushrod /16 music wire exits wing through flattened piece 5/32 OD brass tubing Its flattened room wire move bellcrank rotated dont use tube end up big slot wing fuel can enter Leave pushrod long enough can bend end control horn final assembly Install bellcrank leadouts pushrod assembly Epoxy flattened tube trailing edge sure nothing binds pull wires Now comes tricky part wing construction getting top /16 sheet balsa fit properly before gluing Lay wing flat building board sand trailing edge blend ribs shown wing cross- section drawing lets top sheet extend past bottom sheet can trim excess off later Use sanding block sand bottom sheet top bottom sheets will match along trailing edge Cut piece three-inch-wide balsa little longer wingspan lay atop ribs front edge strip will probably have trimmed mates leading edge side bent down end up slight curve front edge get right lay sheet ribs bend pin down see much have trim Dont wony end up some small gaps can fill later After get top sheet fit apply woodworkers glue leading edge shelf ribs trailing edge sheet touches pin down lots pins Now use same technique another narrower piece finish rear section Use rat-tail file make groove clear pushrod guide Take extra pains get joint between two sheets match closely After everything dry trim sand trailing edge leading edge make leading edge round Stabilizer elevator stab elevator cut good 1/g balsa dont use super-soft stuff Cut shape sand edges round taper trailing edge elevator Pick choice hinges three shownany will work still use cloth hinges glued Ambroid also like Easy Hinge sold Sig other suppliers Easy Hinge nylon fishline type allows install hinges after everything finished painted 86 Model Aviation NUT ADAPTORS V D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzers Endorsed AMA RCMA Sticker Station/lOS Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER FCC Licensed Speed Control Repairs Quality Service Fast Turn Around Shipping & Insurance Extra UPS MailCODs __ w / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWBSYS use nylon fishline drill holes first string line needle sew line through holes going top bottom end up line crossing hinge gap Align stab elevator glue line place CyA Cut rudder same balsa stab round leading edge taper trailing edge glue straight fuselage sure no rudder offset Final Assembly Use pencil pen lay out position wing stab fuselage sure stab 00 incidence bottom wing Cut saw /s slot stab line Make cardboard template wing cross-section slide onto wing trimming necessary until fits center Trace cutout onto fuselage proper distance nose use jigsaw cut out section Slide inboard side wing slot mark area inteiferes Remove interfering wood halfround rough file repeat trial until wing slides snugly way Use grinder chisel cut out little wood bellcrank bolt extends below wing Center wing make sure square longitudinally measuring wingtip corners rear fuselage hold square under wing against fuselage lined up apply some CyA several places wing-fuselage joint hold until set Fill joint glue epoxy cavity nut bolt sure wing completely glued fuselage CyA fine close fitting areasit will wick flow down jointbut have gap use epoxy work down opening fillet some kind will increase strength wing-fuselage junction Glue /4 x 450 balsa strip under wing apply filled epoxy fillet around junction both sides fuselage Slide stab its slot square up fuselage glue same way wing Finish Now can sand entire airplane round off remaining corners fill dents Model Magic filler Leave trailing edge wing square theres less drag way would round off satisfied way model looks decide what kind finish want apply several types has advantages disadvantages An all-dope finish lightweight very fuelproof needs several coats finishing epoxy resin fuelproof its heavy difficult sand would recommend epoxy finish either K&B Hobbypoxy Apply two coats primer surfacer sanding between coats coat colored epoxy want lightweight finish sand primer coat off before painting have sprayer means use brushed finish smooth sprayed sure have good coating around engine tank area keep fuel oil soaking An alternative paint fuselage cover wing iron-on plastic covering seal edges CyA After paint dry install control horn elevator glue tail skid bolt landing gear landing gear can made bent piece 1/8 music wire clamped side fuselage nylon retainers hobby shop flat strip i/is titanium aluminum filed streamlined cross-section flat gear has lot less drag can start wire gear change later speed depends what resources have want buy After become proficient flying could remove landing gear put skid bottom fuselage hand-launch airplane used time before takeoff dollies Whichever gear use put left inboard side fuselage maximize effect wingtip weight Bolt engine some out-thrust first few flights putting couple washers under front hole engine Continued page 90 RE YOU SELECT YOUR NEXT AIRCRAFT ITEM. CIECK YOUR MARAIM Miniature Aviation Reference Annual has taken MARATh____ challenge constructing what far omylete product service reference publication miniature aviation community isnt catalog no distracting advertisements Thousands items hundreds manufacturers large small categorized supply sources Custom services also listed goal list miniature fixed-wing aircraft product service has reliable supply source US small cottage producers marketing giants descrip tions illustrations feasible articles directed towards leadershin miniature aviation extensive heli section 1995 MARATM publication will help make hundreds hours fruitful 10% profits MARAIM will sponsor competition youth awareness miniature aviation order send $2895 plus $300 shipping & handling per order MARA PUBLICATIONS SUITE #1 / 4009 VENTNOR AVE / ATLANTIC CITY NJ 08401 NJ orders add 6% Tax call order @ 609823-0184 January1995 87 3 FOX FOX MANUFACTURING COMPANY 5305 TOWSON AVENUE FORT SMITH ARKANSAS 72901 PHONE 501 646-1656 501 646-1757 Ten PennylLee Continued page 87 mounting lug After have learned whip model little takeoff washers can removed have some 116 aluminum sheet saw out plate support engine will absorb some vibration stiffen front end will give rpm Tank A simple all-metal tank running crankcase pressure works just fine ounce fuel will enough Keep tank narrow minimize effect changing fuel level Find suitable tank hobby shop make out clean tin can small plastic RC tanks will work Clamp tank fuselage J-bolts rubber bands bent strip tin selftapping screws need buy pressure tap engine will either replace upper left-hand backplate screw will require drill tap hole backplate 4-40 6-32 sizes used RC muffler pressure hobby shops have Flying Run engine few times before flying become acquainted starting needle-valve setting Almost 21 engines ABC need little no breakin plenty good props available start 7 x 6 7 x 5 APC wood type Test fly will probably find fastest prop will something like 61/2 x 5 will depend engine cleanly built airplane Use good commercial 10% nitro fuel like Sigs spinner really necessary looks neat works easier starter rounded prop nut need Supplies Very few hobby shops carry Control Line equipment few suppliers lines handles clips etc General products engines Sig Mfg Co 40 1-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Lines neat bellcranks clips Ned Morris 9044 Rushmore Blvd South Indianapolis IN 46234 Tel 317 271123 1 Variety Control Line products Bear Necessities Box 549 Beecher IL 604010549 have problems need help write Glenn Lee 819 Mandrake Dr Batavia IL 60510 odel Aviation AP Control systems DuaIConversion Superhet design
Edition: Model Aviation - 1995/01
Page Numbers: 80, 81
NO OCR TEXT NO OCR TEXT NO OCR TEXT shut-offs throttles Speed simple just have take off get pylon fly level need good engine stable airplane dont look over speed trainer 21 Sport Speed Its easy build easy fly several good engines available power some quite inexpensive present AMA rules Sport Speed allow profile models flown competition have build fancy Speed model magnesium pan streamlining monoline tuned pipes other trick stuff would excellent model Juniors Seniors fly next years Nats usually few entries successful flight has good chance win trophy can start inexpensive engine like event can get faster powerful put same airplane model will go 100 mph good engine dont think its pansy single wheel doesnt add much drag makes takeoffs simple saves props experienced builder wont have trouble building model Ill try explain everything Construction Solid balsa built-up wing Covering/finish Epoxy and/or iron-on film January1995 83 Homemade brass tank holds about ounce fuel Aluminum plate under engine absorbs vibration increases rpm landing gear can simple sheet aluminum titanium shown round music wire can used K&B 21 starts easily crankcase pressure runs steadily does well over 100 mph APC 7 x 6 prop profile-fuselage Ten Penny fancy model very effective Spinner looks neat helps starting Flying weight 20 ounces ATier flying Ten Penny Stunt/sport racing flier Skip Spoula sons Ryan Mall ready Speed competition 1 02 WING WEIGHT OR TEN PENNYS 118 BALSA RUDDER K & B 21 SHOWN SPINNER - N EE WINO TIP CROSS SECTION 3132 PLYWOOD DOUBLERS BOTH SIDES 3/8 X 112 HARDWOOO MOTOR MOUNTS IllS TITANIUM OR ALUMINUM GEAR 1 TO 11/2 CUT OUT TOWHEEL CLEAR ENGINE ALTERNATE 1/a WIRE GEAR I' Lv C ROO / 3/6 BALSA FUSELAGE 3/32 OD BRASS LEADOUT GUIDES 7W ALTERNATE SOLID BALSA WING 41 1164 PLYWOOD BOTH SIDES 1/16 PLYWOOD BELLCRANK MOUNT V7F 1/8 BALSA STAB & ELEVATOR NOTE THREE TYPES OF HINGES SHOWN SEE TEXT FISHLINE HINGE EASY HINGE CLOTH HINGE TEN PENNY TRAINER DESIGNED BY GLENN LEE 1/16 SHEET TOP AND BOTTOM WING CENTER CROSS SECTION 0 0 CD 0 CD CA CD CD CD Ca CD -L 0 beginner can understand CONSTRUCTION Look plans over carefully before starting build decide what part want build first usually start fuselage glue drying can work other parts Pick out piece good firm rock-hard 3/ x 3 balsa buy saw out hardwood engine mounts can square I8 x /2just sure same thickness fuselage balsa Saw slots mounts jig saw band saw distance between fits engine try get reasonably close fit dont have power saw just use X-Acto knife trim fit Notice plans show fulllength plywood sheet both sides fuselage extending under nose doublers plywood can either IM /32 greatly increases strength crash resistance fuselage well worth extra effort Cut plywood least 1/2 inch oversize around can trim shape after gluing Glue two sheets engine mounts fuselage epoxy aliphatic resin woodworkers glue clamp weigh assembly down thick piece plywood other flat surface Put waxed paper down first dont glue fuselage board After glue has set dry trim excess thin plywood sheets shape fuselage Now can add I32 plywood doublers front Cut two pieces shape taper back edges streamline little make blend fuselage Before glue doublers fuselage locate position accurately time pounding small nall brad through plywood little way fuselage nails will hold pieces place glue clamp Remove nails after glue dry round corners test-mount engine streamline nose area Wing If cannot build hesitant build hollow wing shown can use solid balsa mount external control system solid wing can thinner built-up wing since bellcrank doesnt have inside hollow wing probably faster air though thicker external controls add lot drag built-up wing looks lot neater Whichever wing decide build must strong model weighs 20 ounces K&B 21 engine pull test will 60 pounds wing-to-fuselage joint must also able take pull have take extra pains make joint capable taking load decide go solid-balsa wing cut shape medium heavy 1/4-inch wood carve airfoil shape block plane carving knife sanding block alrfoil can flat-bottom symmetrical either will fly okay can change profile shape anything preferjust keep about same size After wing has sanded glue center /8 plywood reinforcement leadout guides place Carve hollow wingtip weight wingtip weight necessary keep airplane rolling takeoff must use 020 diameter solid music wire lines 60 feet long meet rnles heavy About ounce weight enough can chunk lead hobby shops sell can combination washers lead shot coins about right weight Use postal scale measure have go post office grocery store use scale ounce equivalent about ten pennies gives idea name airplane comes Epoxy weight near outer wingtip smear glue over weightyou dont want coming loose Glue piece fiberglass cloth over make sure stays place build hollow wing start sheet /16 hard balsa cut shape shown either buy piece wide enough splice narrow sheets together instant better known cyanoacrylate CyA glue NEED RIC ACCESSORIES FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# -IIz 6 Buffered Y harness 7354# JIz 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Conn 7356# LIiIi 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 72 15# Please specify connector type orderi ng Part #followed Airt J Put S HitecIRCD& JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver wNelcro 8480 hit RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 January1995 85 B&P Associates Gives Total Flight Line FREEDOM new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 PRECISION MODEL PRODUCTS z7v Made n USA BARSTOCK ALUMINUM SPINNERS RetailApprox Part No SizePriceWeight TT-1 502-B 1112$149505802 TT-1 752-B 13/4159509502 TT-2002-B 2189510002 TT-2252-B 2114199516002 TT-2262-B 2114 FAIl. 219515002 TT2502-B 21/2219519002 TT-2512-B FAt2395170oz TT-2752-B 2314269522002 TT-2762-B IFAt. 289520002 TT-3002-B 33095260oz TT-3012-B 3 FAt 3295250oz TT-3252-B 31/434002 TT-3502-B 31/25495 470oz TT-3752-B 3314520oz TT-4002-B 4799557002 3 Pieces Cone Back Ptate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner RetaitApprox Part No SizePriceWeight TT-01 40-A 1/428 .$595 061 02 TT-0147-A 1/428/7mm595 061 02 TT-0810-A Ox 10mm595 z TT-0710-A 7x 10mm595082 02 TT-051 6-A 5/1624 076 02 TT-0518-A 5/1624/8mm595076 02 TT-0810-A Ox 10mm595 2 TT-0825-A Ox 125mm595 07502 TT-0375-A 3/024 .695 02 TT-0125-A 125mm695llSoz 3 Pieces Nut Washer artd Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 thickness wing varies about /2 inch center about /4 tip reduce frontal area I8 x 1 leading edge probably easier taper after assembly glue place top sheet glue drying cut I8 thick piece goes just behind strip makes easier put top sheeting taper 1 /32 high center I32 tips glue against back leading edge CyA Glue /16 plywood center reinforcement sheet place sure good joball pull-test load goes through part Cut ribs balsa sheet making cardboard thin metal template shape shown plans ribs have same top curve just vary height match support strip just behind leading edge Glue ribs place get bellcrank leadouts ready items tip weight have installed before put top sheet bellcrank can commercial 1 /2-inch unit larger cut down leadouts can heavy braided type cable solid 1/32 music wire Just sure loops well wrapped soldered securely remove soldering flux hot water soap coat joints oil wont corrode later Run leadouts through two /2-inchlong pieces I32 OD brass tubing before making end loops Make leadout same length have external reference bellcrank position after wing completed Bolt bellcrank place 6-32 bolt comes out bottom wing nut screw extension will epoxied fuselage help take pull test Cut notches wing ribs leadouts go epoxy brass leadout guides wingtip pushrod /16 music wire exits wing through flattened piece 5/32 OD brass tubing Its flattened room wire move bellcrank rotated dont use tube end up big slot wing fuel can enter Leave pushrod long enough can bend end control horn final assembly Install bellcrank leadouts pushrod assembly Epoxy flattened tube trailing edge sure nothing binds pull wires Now comes tricky part wing construction getting top /16 sheet balsa fit properly before gluing Lay wing flat building board sand trailing edge blend ribs shown wing cross- section drawing lets top sheet extend past bottom sheet can trim excess off later Use sanding block sand bottom sheet top bottom sheets will match along trailing edge Cut piece three-inch-wide balsa little longer wingspan lay atop ribs front edge strip will probably have trimmed mates leading edge side bent down end up slight curve front edge get right lay sheet ribs bend pin down see much have trim Dont wony end up some small gaps can fill later After get top sheet fit apply woodworkers glue leading edge shelf ribs trailing edge sheet touches pin down lots pins Now use same technique another narrower piece finish rear section Use rat-tail file make groove clear pushrod guide Take extra pains get joint between two sheets match closely After everything dry trim sand trailing edge leading edge make leading edge round Stabilizer elevator stab elevator cut good 1/g balsa dont use super-soft stuff Cut shape sand edges round taper trailing edge elevator Pick choice hinges three shownany will work still use cloth hinges glued Ambroid also like Easy Hinge sold Sig other suppliers Easy Hinge nylon fishline type allows install hinges after everything finished painted 86 Model Aviation NUT ADAPTORS V D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzers Endorsed AMA RCMA Sticker Station/lOS Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER FCC Licensed Speed Control Repairs Quality Service Fast Turn Around Shipping & Insurance Extra UPS MailCODs __ w / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWBSYS use nylon fishline drill holes first string line needle sew line through holes going top bottom end up line crossing hinge gap Align stab elevator glue line place CyA Cut rudder same balsa stab round leading edge taper trailing edge glue straight fuselage sure no rudder offset Final Assembly Use pencil pen lay out position wing stab fuselage sure stab 00 incidence bottom wing Cut saw /s slot stab line Make cardboard template wing cross-section slide onto wing trimming necessary until fits center Trace cutout onto fuselage proper distance nose use jigsaw cut out section Slide inboard side wing slot mark area inteiferes Remove interfering wood halfround rough file repeat trial until wing slides snugly way Use grinder chisel cut out little wood bellcrank bolt extends below wing Center wing make sure square longitudinally measuring wingtip corners rear fuselage hold square under wing against fuselage lined up apply some CyA several places wing-fuselage joint hold until set Fill joint glue epoxy cavity nut bolt sure wing completely glued fuselage CyA fine close fitting areasit will wick flow down jointbut have gap use epoxy work down opening fillet some kind will increase strength wing-fuselage junction Glue /4 x 450 balsa strip under wing apply filled epoxy fillet around junction both sides fuselage Slide stab its slot square up fuselage glue same way wing Finish Now can sand entire airplane round off remaining corners fill dents Model Magic filler Leave trailing edge wing square theres less drag way would round off satisfied way model looks decide what kind finish want apply several types has advantages disadvantages An all-dope finish lightweight very fuelproof needs several coats finishing epoxy resin fuelproof its heavy difficult sand would recommend epoxy finish either K&B Hobbypoxy Apply two coats primer surfacer sanding between coats coat colored epoxy want lightweight finish sand primer coat off before painting have sprayer means use brushed finish smooth sprayed sure have good coating around engine tank area keep fuel oil soaking An alternative paint fuselage cover wing iron-on plastic covering seal edges CyA After paint dry install control horn elevator glue tail skid bolt landing gear landing gear can made bent piece 1/8 music wire clamped side fuselage nylon retainers hobby shop flat strip i/is titanium aluminum filed streamlined cross-section flat gear has lot less drag can start wire gear change later speed depends what resources have want buy After become proficient flying could remove landing gear put skid bottom fuselage hand-launch airplane used time before takeoff dollies Whichever gear use put left inboard side fuselage maximize effect wingtip weight Bolt engine some out-thrust first few flights putting couple washers under front hole engine Continued page 90 RE YOU SELECT YOUR NEXT AIRCRAFT ITEM. CIECK YOUR MARAIM Miniature Aviation Reference Annual has taken MARATh____ challenge constructing what far omylete product service reference publication miniature aviation community isnt catalog no distracting advertisements Thousands items hundreds manufacturers large small categorized supply sources Custom services also listed goal list miniature fixed-wing aircraft product service has reliable supply source US small cottage producers marketing giants descrip tions illustrations feasible articles directed towards leadershin miniature aviation extensive heli section 1995 MARATM publication will help make hundreds hours fruitful 10% profits MARAIM will sponsor competition youth awareness miniature aviation order send $2895 plus $300 shipping & handling per order MARA PUBLICATIONS SUITE #1 / 4009 VENTNOR AVE / ATLANTIC CITY NJ 08401 NJ orders add 6% Tax call order @ 609823-0184 January1995 87 3 FOX FOX MANUFACTURING COMPANY 5305 TOWSON AVENUE FORT SMITH ARKANSAS 72901 PHONE 501 646-1656 501 646-1757 Ten PennylLee Continued page 87 mounting lug After have learned whip model little takeoff washers can removed have some 116 aluminum sheet saw out plate support engine will absorb some vibration stiffen front end will give rpm Tank A simple all-metal tank running crankcase pressure works just fine ounce fuel will enough Keep tank narrow minimize effect changing fuel level Find suitable tank hobby shop make out clean tin can small plastic RC tanks will work Clamp tank fuselage J-bolts rubber bands bent strip tin selftapping screws need buy pressure tap engine will either replace upper left-hand backplate screw will require drill tap hole backplate 4-40 6-32 sizes used RC muffler pressure hobby shops have Flying Run engine few times before flying become acquainted starting needle-valve setting Almost 21 engines ABC need little no breakin plenty good props available start 7 x 6 7 x 5 APC wood type Test fly will probably find fastest prop will something like 61/2 x 5 will depend engine cleanly built airplane Use good commercial 10% nitro fuel like Sigs spinner really necessary looks neat works easier starter rounded prop nut need Supplies Very few hobby shops carry Control Line equipment few suppliers lines handles clips etc General products engines Sig Mfg Co 40 1-7 S Front St Montezuma IA 50171 Tel 515 623-5154 Lines neat bellcranks clips Ned Morris 9044 Rushmore Blvd South Indianapolis IN 46234 Tel 317 271123 1 Variety Control Line products Bear Necessities Box 549 Beecher IL 604010549 have problems need help write Glenn Lee 819 Mandrake Dr Batavia IL 60510 odel Aviation AP Control systems DuaIConversion Superhet design