DWRR WHEN YOU BRING mind handlaunch gliders used test beds first flying machines long ago Leonardo da Vinci thousands upon thousands designs have flown since difficult convince yourself much new layouts have already tried However con test results indication good performing hand launch Roll-Out has its two-year development period established enviable record has rarely failed finish money has outright winner about 50% meets entered appearance thrown type glider seems simple kids plaything fliers past present event really appreciate unique aerodynamic structural forces work short span about three seconds launch roll-out top speed G-forces constantly building diminishing within frame work variance flier another flight other Keeping things proper perspective intent develop glider withstand rigors imposed hardest throwing enthusiast have good rolling transition characteristics able ride light bouyant lift well have spinning-in tendency strong turbulent thermals features combined proven reliable D-T system recovery design cri teria Roll-Out believe have attained try self Fuselage Since components build around fuselage lets begin fuselage made hard straight grained balsa Sight down selected blank make sure warped twisted Draw out line onto rough blank trim ex cess balsa away leaving wing platform untouched thus providing essentially 00 incidence datum line stabilizer platform should also 0 parallel wing platform Using combination knife razor sandpaper round off corners blank oval cir cular section plan indicates D T fuse holder constructed soldering shim-brass sheet wire tubing plans show completed assembly epoxied nose Wing wing preparation shaping probably difficult important component hand-launch glider care should taken choosing cor rect wood like keep wing light side try choose wood about 6-lb density quarter-grained type grain recognized speckled scaly appearance difficult find must generally searched out 4-wide sheet available may necessary piece wing using com bination 3 1 widths 1 piece along leading edge Piecing best accomplished regu Continued page 94 38 Model Aviation Bob Dunham has won half meets has entered Good design really counts hand-launched glider Tail group DT position Note 1/2-wide Mylar pressed place join hinged elevator fixed porton stabilizersee head photo Article details adjusting flying system Like free-flight duration model IlL glider rides thermalsso OT important fuse holder soldered shim-brass epoxied fuselage Light fuse short piece fusenot burning match THE BIGIS CCOMING Send $100 1977 illustrated cata log complete line Dealers inquiry invited Andrews Aircraft Model Co Inc US Rte 1 & North St Topsfield MA 01983 8878541 Sig Bond Use triangle carpenters square check holding everything position masking tape Allow several hours resin set pull tail post together using fast glue 1/32 balsa fairing positioned formed instantglued place Sig cowl shown gear bent shape over plan attached 1/16 ply former carpet thread wrapped glued Tail surfaces cut 1/16 sheet sanded positioned fast glue Scallops can easily done sandpaper l wing straight-forward involving two identical assemblies center section cut out discarded lower wing Dihedral angle sanded using -in block under tip classic table edge Joints fast glued Cover finish wings before attaching fuse lage Japanese tissue clear dope works fine engine its hardware should installed before covering fuselage handy removable motor set-up can made epoxying nuts onto small piece plywood fast glued back firewall filler nipple mounted 1/32 ply stuck position after rolling tubing loops needed place tank proper position Use scrap balsa hold tank tight finish prototype done Floquil Caboose Red mixed clear nitrate dope Although airbrush would ideal color brushed coat covered well added almost no weight attempt use colored dope much too heavy Now cut cabanes 1/32 ply Mark exit point fuselage side pencil ball-point entry rib bottom Cut thin slots through 1/32 balsa cowl stick cabane through fas ten fast glue tissue cut wing center section top wing posi tioned fast glue checking alignment carefully lower wing installed same way 1/32 bass interplane struts installed fast glue model completed constructing 1/32 bass landing gear frame place fuselage bottom wire attached basswood allowed swing free preventing breakage still looking realistic tailskid cut basswood fast glued tail post Interplane wires monofilament fish ing line threaded through small holes previously drilled struts Tie knot end thread through both holes tighten fast glue wires should tightened enough remove sag functional Roll Out/Dunham continued page 38 lar model cement because sands works easier epoxy white glues seam should tight fit allowed dry thoroughly before proceeding Trace wing outline airfoil highpoint line ball-point pen cut al outline leaving 1/16 around final finish first important step carefully sand about 1/32 tip wash out bottom side area shown plan delicate operation little required dont overdo use small razor plane shape rear airfoil portion blank high point line trailing edge keep ing flat possible use straight edge check Sand out hills valleys using sanding block main tain trailing edge thickness about 1/32 leading edge next should have bit top camber leaving enough thickness front bot tom side curved entry leading edge radius outer wing tip panels should tapered thinned keeping airfoil shape way Next trim exact out line final sand using progressively finer grit down 400 W-D wing next cut four pieces dihedral points ends carefully beveled make correct angles epoxied joints should good tight fit no gaps else disaster waiting wings double entendre Allow cure thoroughly build up glue skin break help strengthen joints fuselage V-notched accept mid-dihedral point wing centered glued place glue fillet under side along fuselage desirable forefinger reinforcement triangle cut edges streamlined glued underside wing Con form finger oval snug custom fit using sandpaper wrapped around dowel pencilStab Rudder horizontal stabilizer cut 1/16 warp-free sheet balsa sanded airfoil section Smooth remove balsa fuzz 400 W-D paper give two coats Sig Lite Coat Using metal straightedge guide part elevator along line shown plan two portions butted together fiat surface -wide Mylar pres sure-sensitive tape pressed place 1/32 ply piece serves stiffener spring guide glued underside D-T spring installed fuse lage epoxied place spring must have enough tension raise pop-up stab 450 angle 012 014 dia wire has found satisfac tory stabilizer glued fuselage slight tilt plans indi cate rudder glued stabilizer should have just hint left offset remaining rigging D-T system self-explanatory plans caution being make sure everything working smoothly proving point actually operating assembly ground before attempting fly After glider completely assembled fuselage wing should given coat sanding sealer followed two coats 50% thinned clear dope generous amount fine sanding between coats visibility likely become problem depending upon part country live light spray coat red orange day-gb dope applied underside outer tips recom mend sake weight build-up Any further decoration best satisfied using favorite design cut Japanese tissue applied between first Applying Heat-Shrink Covering Model Air planes title 32-page book prepared Dan DeLuca Edson Enterprises Print ed heavy slick paper extensively illus trated step-by-step how-to-do-it photo graphs printed 4-colors Dan first place winner 1976 Toledo Show model won vehicle de tailed discussion Pictures text begin materials required tools cover fine point ending trimming detailing have never covered heat-shrink ma terials book invaluable aid already covering materials book will upgrade versatility obtain ing stunning effects color schemes Price $595 plus 50 cents postage hand ling Edson Enterprises Inc 228 Franklin Ave Nutley NJ 07110 product review product review product review 94 Model Aviation nIgut rAview product review product review second coat clear dope Flying glider will probably need small amount weight nose make ship balance 50% point wing chord right-handed glide circle should definitely left rough trim pick calm day field foot-high soft grass pro ceed launch left bank inclination enough force gain about 30 feet height ship should go over top its 40-ft diameter glide circle little no dip descend diving stalling Compensating adjust ments should made stabilizer shimming 1/64 time Next slip fuse nose tube light using another piece burning fuse Never use burning match light ing may end up whole nose section afire After taking few steps wind launch ship nose up about 600 angle banked right glider should climb right pattern slows should go over top left-hand glide hard throw necessary realize full potential half-hard launch could disastrous enough speed attained take ship through top transition portion Only repeated trial too er rors will give experience know Remember no hand launch will two-minute max thermal help well adjusted thrown Roll-Out will get about halfway neutral air So want win contests must look tell-tale signs lift before making officials dethermalizer permits test flights made de termine what signs par ticular day well limber up just fly fun risk losing ship Avenger/Sarpolus continued page 50 cockpit area panel lines machine guns insignia etc its realistic appearance rewarding characteristic lines Avenger cannot mistaken Some comments about original Avenger entered combat 1942 during Battle Midway de signed 1941 replace Douglas TBD Devastator torpedo-bomber Grum man did quick job getting Avenger production almost 10000 built different versions came along TBF carried torpedo 2000 lbs bombs its large bomb bay also 50 machine gun firing forward 50 gun its dorsal turret 30 gun ventral step surprised opponents Other versions two 50 guns wings radar some reconnaissance versions special cam eras anti-submarine models transport version carried up seven passengers out aircraft carriers sea produced until 1944 Grumman built about 2300 planes designated TBF General Motors made approximately 7600 designated TBM Some went British Royal Navy few Royal New Zealand Air Force Construction build model two thickness es balsa needed /8 Y4 Also some 1/32 plywood few scraps plywood usual hardware consist ing bellcrank control horn pushrod leadouts etc suggest cut out necessary parts make own kit before beginning assembly Starting wing get neces sary 6 width edge glue two pieces 3 tock together cut standard 3 X 36 pieces Sand joining edges get good fit use piece masking tape hold two pieces tightly together open joint opposite side apply glue Close joint wipe off excess glue wing tip pieces added grain going right angles main wing panel help wing re sist warping Block sand entire wing round edges no airfoiling needed tail surfaces fin rudder stabilizer elevator cut remaining /8 X 3 balsa Sand pieces bevel edge rudder can glued fin /8 offset toward outside flying circle Commercially packaged nylon cloth tape used hinges applied usual over-and-under man ner glued model airplane cement use five-minute epoxy other sembly work its strength speed assembly hard assemble entire model evening fuselage complicated part necessary width obtained edge gluing stock together done wing Cutting fuselage outline shape easily done jig band saw can done X-acto knife Make notches motor mounts carefully spacing correct engine will using Glue mounts place before adding 1/32 plywood nose doublers gluing nose doublers place either lay assembly workbench use heavy weights bold doublers un til dry hold place clothes pins and/or small C-clamps edges fuselage should well rounded shown plans Time spent sanding now will really pay off good looking model wing tail fuselage semblies done now must joined together Alignment critical sure wing glued fuselage right angles stab must parallel wing fin course vertical Take time straight cor rectly aligned model will always fly better slightly crooked wing assembled fuselage /8 plywood bellcrank mount leadout guide may added Also tip weight can glued place Mount bellcrank control horn bend 1/16 wire pushrod ends bellcrank neutral position elevator level permits equal up down elevator travel Use engine mark its mounting holes drilling engine mounted two washers under front mount ing holes thrust line offset insure tension control lines flying 1/16 wire used gas tank retain ing hook make two bends indicated September1977 95 GEE BEE RACER 1/32 SCALE PLASTIC MODEL KIT CONSTRUCT R-1 OR R-2 AT YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING DEPT MA PAWNEE ST SAN MARCOS CA 9 4LLIAMS
Edition: Model Aviation - 1977/09
Page Numbers: 38, 94, 95
DWRR WHEN YOU BRING mind handlaunch gliders used test beds first flying machines long ago Leonardo da Vinci thousands upon thousands designs have flown since difficult convince yourself much new layouts have already tried However con test results indication good performing hand launch Roll-Out has its two-year development period established enviable record has rarely failed finish money has outright winner about 50% meets entered appearance thrown type glider seems simple kids plaything fliers past present event really appreciate unique aerodynamic structural forces work short span about three seconds launch roll-out top speed G-forces constantly building diminishing within frame work variance flier another flight other Keeping things proper perspective intent develop glider withstand rigors imposed hardest throwing enthusiast have good rolling transition characteristics able ride light bouyant lift well have spinning-in tendency strong turbulent thermals features combined proven reliable D-T system recovery design cri teria Roll-Out believe have attained try self Fuselage Since components build around fuselage lets begin fuselage made hard straight grained balsa Sight down selected blank make sure warped twisted Draw out line onto rough blank trim ex cess balsa away leaving wing platform untouched thus providing essentially 00 incidence datum line stabilizer platform should also 0 parallel wing platform Using combination knife razor sandpaper round off corners blank oval cir cular section plan indicates D T fuse holder constructed soldering shim-brass sheet wire tubing plans show completed assembly epoxied nose Wing wing preparation shaping probably difficult important component hand-launch glider care should taken choosing cor rect wood like keep wing light side try choose wood about 6-lb density quarter-grained type grain recognized speckled scaly appearance difficult find must generally searched out 4-wide sheet available may necessary piece wing using com bination 3 1 widths 1 piece along leading edge Piecing best accomplished regu Continued page 94 38 Model Aviation Bob Dunham has won half meets has entered Good design really counts hand-launched glider Tail group DT position Note 1/2-wide Mylar pressed place join hinged elevator fixed porton stabilizersee head photo Article details adjusting flying system Like free-flight duration model IlL glider rides thermalsso OT important fuse holder soldered shim-brass epoxied fuselage Light fuse short piece fusenot burning match THE BIGIS CCOMING Send $100 1977 illustrated cata log complete line Dealers inquiry invited Andrews Aircraft Model Co Inc US Rte 1 & North St Topsfield MA 01983 8878541 Sig Bond Use triangle carpenters square check holding everything position masking tape Allow several hours resin set pull tail post together using fast glue 1/32 balsa fairing positioned formed instantglued place Sig cowl shown gear bent shape over plan attached 1/16 ply former carpet thread wrapped glued Tail surfaces cut 1/16 sheet sanded positioned fast glue Scallops can easily done sandpaper l wing straight-forward involving two identical assemblies center section cut out discarded lower wing Dihedral angle sanded using -in block under tip classic table edge Joints fast glued Cover finish wings before attaching fuse lage Japanese tissue clear dope works fine engine its hardware should installed before covering fuselage handy removable motor set-up can made epoxying nuts onto small piece plywood fast glued back firewall filler nipple mounted 1/32 ply stuck position after rolling tubing loops needed place tank proper position Use scrap balsa hold tank tight finish prototype done Floquil Caboose Red mixed clear nitrate dope Although airbrush would ideal color brushed coat covered well added almost no weight attempt use colored dope much too heavy Now cut cabanes 1/32 ply Mark exit point fuselage side pencil ball-point entry rib bottom Cut thin slots through 1/32 balsa cowl stick cabane through fas ten fast glue tissue cut wing center section top wing posi tioned fast glue checking alignment carefully lower wing installed same way 1/32 bass interplane struts installed fast glue model completed constructing 1/32 bass landing gear frame place fuselage bottom wire attached basswood allowed swing free preventing breakage still looking realistic tailskid cut basswood fast glued tail post Interplane wires monofilament fish ing line threaded through small holes previously drilled struts Tie knot end thread through both holes tighten fast glue wires should tightened enough remove sag functional Roll Out/Dunham continued page 38 lar model cement because sands works easier epoxy white glues seam should tight fit allowed dry thoroughly before proceeding Trace wing outline airfoil highpoint line ball-point pen cut al outline leaving 1/16 around final finish first important step carefully sand about 1/32 tip wash out bottom side area shown plan delicate operation little required dont overdo use small razor plane shape rear airfoil portion blank high point line trailing edge keep ing flat possible use straight edge check Sand out hills valleys using sanding block main tain trailing edge thickness about 1/32 leading edge next should have bit top camber leaving enough thickness front bot tom side curved entry leading edge radius outer wing tip panels should tapered thinned keeping airfoil shape way Next trim exact out line final sand using progressively finer grit down 400 W-D wing next cut four pieces dihedral points ends carefully beveled make correct angles epoxied joints should good tight fit no gaps else disaster waiting wings double entendre Allow cure thoroughly build up glue skin break help strengthen joints fuselage V-notched accept mid-dihedral point wing centered glued place glue fillet under side along fuselage desirable forefinger reinforcement triangle cut edges streamlined glued underside wing Con form finger oval snug custom fit using sandpaper wrapped around dowel pencilStab Rudder horizontal stabilizer cut 1/16 warp-free sheet balsa sanded airfoil section Smooth remove balsa fuzz 400 W-D paper give two coats Sig Lite Coat Using metal straightedge guide part elevator along line shown plan two portions butted together fiat surface -wide Mylar pres sure-sensitive tape pressed place 1/32 ply piece serves stiffener spring guide glued underside D-T spring installed fuse lage epoxied place spring must have enough tension raise pop-up stab 450 angle 012 014 dia wire has found satisfac tory stabilizer glued fuselage slight tilt plans indi cate rudder glued stabilizer should have just hint left offset remaining rigging D-T system self-explanatory plans caution being make sure everything working smoothly proving point actually operating assembly ground before attempting fly After glider completely assembled fuselage wing should given coat sanding sealer followed two coats 50% thinned clear dope generous amount fine sanding between coats visibility likely become problem depending upon part country live light spray coat red orange day-gb dope applied underside outer tips recom mend sake weight build-up Any further decoration best satisfied using favorite design cut Japanese tissue applied between first Applying Heat-Shrink Covering Model Air planes title 32-page book prepared Dan DeLuca Edson Enterprises Print ed heavy slick paper extensively illus trated step-by-step how-to-do-it photo graphs printed 4-colors Dan first place winner 1976 Toledo Show model won vehicle de tailed discussion Pictures text begin materials required tools cover fine point ending trimming detailing have never covered heat-shrink ma terials book invaluable aid already covering materials book will upgrade versatility obtain ing stunning effects color schemes Price $595 plus 50 cents postage hand ling Edson Enterprises Inc 228 Franklin Ave Nutley NJ 07110 product review product review product review 94 Model Aviation nIgut rAview product review product review second coat clear dope Flying glider will probably need small amount weight nose make ship balance 50% point wing chord right-handed glide circle should definitely left rough trim pick calm day field foot-high soft grass pro ceed launch left bank inclination enough force gain about 30 feet height ship should go over top its 40-ft diameter glide circle little no dip descend diving stalling Compensating adjust ments should made stabilizer shimming 1/64 time Next slip fuse nose tube light using another piece burning fuse Never use burning match light ing may end up whole nose section afire After taking few steps wind launch ship nose up about 600 angle banked right glider should climb right pattern slows should go over top left-hand glide hard throw necessary realize full potential half-hard launch could disastrous enough speed attained take ship through top transition portion Only repeated trial too er rors will give experience know Remember no hand launch will two-minute max thermal help well adjusted thrown Roll-Out will get about halfway neutral air So want win contests must look tell-tale signs lift before making officials dethermalizer permits test flights made de termine what signs par ticular day well limber up just fly fun risk losing ship Avenger/Sarpolus continued page 50 cockpit area panel lines machine guns insignia etc its realistic appearance rewarding characteristic lines Avenger cannot mistaken Some comments about original Avenger entered combat 1942 during Battle Midway de signed 1941 replace Douglas TBD Devastator torpedo-bomber Grum man did quick job getting Avenger production almost 10000 built different versions came along TBF carried torpedo 2000 lbs bombs its large bomb bay also 50 machine gun firing forward 50 gun its dorsal turret 30 gun ventral step surprised opponents Other versions two 50 guns wings radar some reconnaissance versions special cam eras anti-submarine models transport version carried up seven passengers out aircraft carriers sea produced until 1944 Grumman built about 2300 planes designated TBF General Motors made approximately 7600 designated TBM Some went British Royal Navy few Royal New Zealand Air Force Construction build model two thickness es balsa needed /8 Y4 Also some 1/32 plywood few scraps plywood usual hardware consist ing bellcrank control horn pushrod leadouts etc suggest cut out necessary parts make own kit before beginning assembly Starting wing get neces sary 6 width edge glue two pieces 3 tock together cut standard 3 X 36 pieces Sand joining edges get good fit use piece masking tape hold two pieces tightly together open joint opposite side apply glue Close joint wipe off excess glue wing tip pieces added grain going right angles main wing panel help wing re sist warping Block sand entire wing round edges no airfoiling needed tail surfaces fin rudder stabilizer elevator cut remaining /8 X 3 balsa Sand pieces bevel edge rudder can glued fin /8 offset toward outside flying circle Commercially packaged nylon cloth tape used hinges applied usual over-and-under man ner glued model airplane cement use five-minute epoxy other sembly work its strength speed assembly hard assemble entire model evening fuselage complicated part necessary width obtained edge gluing stock together done wing Cutting fuselage outline shape easily done jig band saw can done X-acto knife Make notches motor mounts carefully spacing correct engine will using Glue mounts place before adding 1/32 plywood nose doublers gluing nose doublers place either lay assembly workbench use heavy weights bold doublers un til dry hold place clothes pins and/or small C-clamps edges fuselage should well rounded shown plans Time spent sanding now will really pay off good looking model wing tail fuselage semblies done now must joined together Alignment critical sure wing glued fuselage right angles stab must parallel wing fin course vertical Take time straight cor rectly aligned model will always fly better slightly crooked wing assembled fuselage /8 plywood bellcrank mount leadout guide may added Also tip weight can glued place Mount bellcrank control horn bend 1/16 wire pushrod ends bellcrank neutral position elevator level permits equal up down elevator travel Use engine mark its mounting holes drilling engine mounted two washers under front mount ing holes thrust line offset insure tension control lines flying 1/16 wire used gas tank retain ing hook make two bends indicated September1977 95 GEE BEE RACER 1/32 SCALE PLASTIC MODEL KIT CONSTRUCT R-1 OR R-2 AT YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING DEPT MA PAWNEE ST SAN MARCOS CA 9 4LLIAMS
Edition: Model Aviation - 1977/09
Page Numbers: 38, 94, 95
DWRR WHEN YOU BRING mind handlaunch gliders used test beds first flying machines long ago Leonardo da Vinci thousands upon thousands designs have flown since difficult convince yourself much new layouts have already tried However con test results indication good performing hand launch Roll-Out has its two-year development period established enviable record has rarely failed finish money has outright winner about 50% meets entered appearance thrown type glider seems simple kids plaything fliers past present event really appreciate unique aerodynamic structural forces work short span about three seconds launch roll-out top speed G-forces constantly building diminishing within frame work variance flier another flight other Keeping things proper perspective intent develop glider withstand rigors imposed hardest throwing enthusiast have good rolling transition characteristics able ride light bouyant lift well have spinning-in tendency strong turbulent thermals features combined proven reliable D-T system recovery design cri teria Roll-Out believe have attained try self Fuselage Since components build around fuselage lets begin fuselage made hard straight grained balsa Sight down selected blank make sure warped twisted Draw out line onto rough blank trim ex cess balsa away leaving wing platform untouched thus providing essentially 00 incidence datum line stabilizer platform should also 0 parallel wing platform Using combination knife razor sandpaper round off corners blank oval cir cular section plan indicates D T fuse holder constructed soldering shim-brass sheet wire tubing plans show completed assembly epoxied nose Wing wing preparation shaping probably difficult important component hand-launch glider care should taken choosing cor rect wood like keep wing light side try choose wood about 6-lb density quarter-grained type grain recognized speckled scaly appearance difficult find must generally searched out 4-wide sheet available may necessary piece wing using com bination 3 1 widths 1 piece along leading edge Piecing best accomplished regu Continued page 94 38 Model Aviation Bob Dunham has won half meets has entered Good design really counts hand-launched glider Tail group DT position Note 1/2-wide Mylar pressed place join hinged elevator fixed porton stabilizersee head photo Article details adjusting flying system Like free-flight duration model IlL glider rides thermalsso OT important fuse holder soldered shim-brass epoxied fuselage Light fuse short piece fusenot burning match THE BIGIS CCOMING Send $100 1977 illustrated cata log complete line Dealers inquiry invited Andrews Aircraft Model Co Inc US Rte 1 & North St Topsfield MA 01983 8878541 Sig Bond Use triangle carpenters square check holding everything position masking tape Allow several hours resin set pull tail post together using fast glue 1/32 balsa fairing positioned formed instantglued place Sig cowl shown gear bent shape over plan attached 1/16 ply former carpet thread wrapped glued Tail surfaces cut 1/16 sheet sanded positioned fast glue Scallops can easily done sandpaper l wing straight-forward involving two identical assemblies center section cut out discarded lower wing Dihedral angle sanded using -in block under tip classic table edge Joints fast glued Cover finish wings before attaching fuse lage Japanese tissue clear dope works fine engine its hardware should installed before covering fuselage handy removable motor set-up can made epoxying nuts onto small piece plywood fast glued back firewall filler nipple mounted 1/32 ply stuck position after rolling tubing loops needed place tank proper position Use scrap balsa hold tank tight finish prototype done Floquil Caboose Red mixed clear nitrate dope Although airbrush would ideal color brushed coat covered well added almost no weight attempt use colored dope much too heavy Now cut cabanes 1/32 ply Mark exit point fuselage side pencil ball-point entry rib bottom Cut thin slots through 1/32 balsa cowl stick cabane through fas ten fast glue tissue cut wing center section top wing posi tioned fast glue checking alignment carefully lower wing installed same way 1/32 bass interplane struts installed fast glue model completed constructing 1/32 bass landing gear frame place fuselage bottom wire attached basswood allowed swing free preventing breakage still looking realistic tailskid cut basswood fast glued tail post Interplane wires monofilament fish ing line threaded through small holes previously drilled struts Tie knot end thread through both holes tighten fast glue wires should tightened enough remove sag functional Roll Out/Dunham continued page 38 lar model cement because sands works easier epoxy white glues seam should tight fit allowed dry thoroughly before proceeding Trace wing outline airfoil highpoint line ball-point pen cut al outline leaving 1/16 around final finish first important step carefully sand about 1/32 tip wash out bottom side area shown plan delicate operation little required dont overdo use small razor plane shape rear airfoil portion blank high point line trailing edge keep ing flat possible use straight edge check Sand out hills valleys using sanding block main tain trailing edge thickness about 1/32 leading edge next should have bit top camber leaving enough thickness front bot tom side curved entry leading edge radius outer wing tip panels should tapered thinned keeping airfoil shape way Next trim exact out line final sand using progressively finer grit down 400 W-D wing next cut four pieces dihedral points ends carefully beveled make correct angles epoxied joints should good tight fit no gaps else disaster waiting wings double entendre Allow cure thoroughly build up glue skin break help strengthen joints fuselage V-notched accept mid-dihedral point wing centered glued place glue fillet under side along fuselage desirable forefinger reinforcement triangle cut edges streamlined glued underside wing Con form finger oval snug custom fit using sandpaper wrapped around dowel pencilStab Rudder horizontal stabilizer cut 1/16 warp-free sheet balsa sanded airfoil section Smooth remove balsa fuzz 400 W-D paper give two coats Sig Lite Coat Using metal straightedge guide part elevator along line shown plan two portions butted together fiat surface -wide Mylar pres sure-sensitive tape pressed place 1/32 ply piece serves stiffener spring guide glued underside D-T spring installed fuse lage epoxied place spring must have enough tension raise pop-up stab 450 angle 012 014 dia wire has found satisfac tory stabilizer glued fuselage slight tilt plans indi cate rudder glued stabilizer should have just hint left offset remaining rigging D-T system self-explanatory plans caution being make sure everything working smoothly proving point actually operating assembly ground before attempting fly After glider completely assembled fuselage wing should given coat sanding sealer followed two coats 50% thinned clear dope generous amount fine sanding between coats visibility likely become problem depending upon part country live light spray coat red orange day-gb dope applied underside outer tips recom mend sake weight build-up Any further decoration best satisfied using favorite design cut Japanese tissue applied between first Applying Heat-Shrink Covering Model Air planes title 32-page book prepared Dan DeLuca Edson Enterprises Print ed heavy slick paper extensively illus trated step-by-step how-to-do-it photo graphs printed 4-colors Dan first place winner 1976 Toledo Show model won vehicle de tailed discussion Pictures text begin materials required tools cover fine point ending trimming detailing have never covered heat-shrink ma terials book invaluable aid already covering materials book will upgrade versatility obtain ing stunning effects color schemes Price $595 plus 50 cents postage hand ling Edson Enterprises Inc 228 Franklin Ave Nutley NJ 07110 product review product review product review 94 Model Aviation nIgut rAview product review product review second coat clear dope Flying glider will probably need small amount weight nose make ship balance 50% point wing chord right-handed glide circle should definitely left rough trim pick calm day field foot-high soft grass pro ceed launch left bank inclination enough force gain about 30 feet height ship should go over top its 40-ft diameter glide circle little no dip descend diving stalling Compensating adjust ments should made stabilizer shimming 1/64 time Next slip fuse nose tube light using another piece burning fuse Never use burning match light ing may end up whole nose section afire After taking few steps wind launch ship nose up about 600 angle banked right glider should climb right pattern slows should go over top left-hand glide hard throw necessary realize full potential half-hard launch could disastrous enough speed attained take ship through top transition portion Only repeated trial too er rors will give experience know Remember no hand launch will two-minute max thermal help well adjusted thrown Roll-Out will get about halfway neutral air So want win contests must look tell-tale signs lift before making officials dethermalizer permits test flights made de termine what signs par ticular day well limber up just fly fun risk losing ship Avenger/Sarpolus continued page 50 cockpit area panel lines machine guns insignia etc its realistic appearance rewarding characteristic lines Avenger cannot mistaken Some comments about original Avenger entered combat 1942 during Battle Midway de signed 1941 replace Douglas TBD Devastator torpedo-bomber Grum man did quick job getting Avenger production almost 10000 built different versions came along TBF carried torpedo 2000 lbs bombs its large bomb bay also 50 machine gun firing forward 50 gun its dorsal turret 30 gun ventral step surprised opponents Other versions two 50 guns wings radar some reconnaissance versions special cam eras anti-submarine models transport version carried up seven passengers out aircraft carriers sea produced until 1944 Grumman built about 2300 planes designated TBF General Motors made approximately 7600 designated TBM Some went British Royal Navy few Royal New Zealand Air Force Construction build model two thickness es balsa needed /8 Y4 Also some 1/32 plywood few scraps plywood usual hardware consist ing bellcrank control horn pushrod leadouts etc suggest cut out necessary parts make own kit before beginning assembly Starting wing get neces sary 6 width edge glue two pieces 3 tock together cut standard 3 X 36 pieces Sand joining edges get good fit use piece masking tape hold two pieces tightly together open joint opposite side apply glue Close joint wipe off excess glue wing tip pieces added grain going right angles main wing panel help wing re sist warping Block sand entire wing round edges no airfoiling needed tail surfaces fin rudder stabilizer elevator cut remaining /8 X 3 balsa Sand pieces bevel edge rudder can glued fin /8 offset toward outside flying circle Commercially packaged nylon cloth tape used hinges applied usual over-and-under man ner glued model airplane cement use five-minute epoxy other sembly work its strength speed assembly hard assemble entire model evening fuselage complicated part necessary width obtained edge gluing stock together done wing Cutting fuselage outline shape easily done jig band saw can done X-acto knife Make notches motor mounts carefully spacing correct engine will using Glue mounts place before adding 1/32 plywood nose doublers gluing nose doublers place either lay assembly workbench use heavy weights bold doublers un til dry hold place clothes pins and/or small C-clamps edges fuselage should well rounded shown plans Time spent sanding now will really pay off good looking model wing tail fuselage semblies done now must joined together Alignment critical sure wing glued fuselage right angles stab must parallel wing fin course vertical Take time straight cor rectly aligned model will always fly better slightly crooked wing assembled fuselage /8 plywood bellcrank mount leadout guide may added Also tip weight can glued place Mount bellcrank control horn bend 1/16 wire pushrod ends bellcrank neutral position elevator level permits equal up down elevator travel Use engine mark its mounting holes drilling engine mounted two washers under front mount ing holes thrust line offset insure tension control lines flying 1/16 wire used gas tank retain ing hook make two bends indicated September1977 95 GEE BEE RACER 1/32 SCALE PLASTIC MODEL KIT CONSTRUCT R-1 OR R-2 AT YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING DEPT MA PAWNEE ST SAN MARCOS CA 9 4LLIAMS