THE OLDER EXPERIMENTAL tan dem-wing airplanes have always interested Except machines Samuel Langley built late 1 890s tandemwing ships have almost exclusively French lightplanes designs consider Maboussin Type 40 Hemip tere attractive dont know true aerodynamic advantage tandem configuration full-size airplanes models have built seem fly well itself aerodynamic advantage enough Hemiptere no exception has very stable flight pattern early duration flights about minute uncommon using amounts rubber guessed first considered building Scale Hemiptere could find photo graph called friend obscure airplane expert Bill Hannan course knew machine able provide three-view Weiss drawing near-Peanut-size model Just about begin Hemip tere came across listing model drawings sale Emannuel Fillion included another tandem-wing French lightplane Along order included letter mentioning interest Hemiptere Monsieur Fillion sent quite bit information response Among things Drawings pages 85 88 received set Peanut model drawings Maurice Bayet published 1975 Monseiur Bayets model found close three-view drawings did exactly match photographs great thing about dynamic evolving science like aircraft design offshoots backwashes occur various schemes tried Pea nut Scale model takes look French experi ments tandem wings led trying obtain best compromise between what could con firmed photographs what shown three-view drawing As now have same three-view drawing least three different sources model presented compromise resulted thanks Bill Han nan Emannuel Fillion Maurice Bayet lets get building Construction following instructions assume builder has basic know ledge stick-and-tissue construction methods will cover primarily tech aiques different ordinary along hints tricks Ive discovered through years Begin soaking four medium strips Ac-in balsa about 12 long water until sink fastest way accomplish place vertical tube filled water force under using plug other means keep sub merged two three days will sink Once saturated will used wing tips trailing edge outlines vertical fins strips soak make two copies drawings copy machine will reproduce enlarging reducing material careful copy machine youre using doesnt display percentage its copying chances good exactly 100% Compare original sure Use copy cut up templates etc other build fuselage built using conven tional box method rear post has two vertical members two sides assembled will 1/io thick Note rear vertical members left overlong provide negative incidence rear wing Due high thrust line necessary upper formers cut out allow clearance rubber Glue paper 1/32 formers help maintain strength after lower material removed glue stick easiest gluing method Dennison s works best Put 1Ao-sq cross members glue formers place rubber clearance cutouts Block-sand formers Yo sheeting will make contact having bulges sags Just before applying 1/ sheeting make clearance cutouts Dremel tool After sheeting installed including side lower cowl area put three 1/32 x 1/16-in stringers aft cockpit former ahead rear wing Coat sheet sections rear rubber peg cyanoacrylate CyA increase strength nose block piece -in sheeting 1/16 x /I6 strips added rear face fit front fuselage recommend Kulzer Hook added lower cross strip shown drawings hook prevent prop nose block coming out des troying trim should prop hit ceiling whatever small addition figured out friend Walt Kulzer worth adding Scale model flown indoors Use small Peck thrust bearing downthrust noted drawing have never able make free hand cutout resembles cockpit suggest sandpaper wrapped cylin der used shape cockpit opening Cut outlines wing tip trailing edge copy drawing Attach pieces poster board glue stick make forms Attach previously-soaked 1/20 sticks lead ing edge form short strip masking tape Proceed snug stick form add masking tape strips work around curved tip area Tape remainder strip straight trailing edge section strip should long enough go around tip also form trailing edge root rib Repeat opposite wing pin half flat board tip section elevated form straight upper surface wing Leave until dry Only wing rib shown plan easiest make same cut ribs curved areas length using upper spar reference Pin rib sets together block-sand 64 Model Aviation ne wean simple OT InS proioiype mee Tar Ufl exceiment Peauo caie moaei Ample wing area assists duration does long motorthis model capable carrying spirit Scale models Hemlptere rests data photos prototype Jim Clems prop lots area developed Bostonians suits model well exact shape cut spar notches Because ribs different thickness should stacked order minor deviations sanding progressive across wing Extra care will mean less sanding after assembly cuts made pin ribs building board Glue leading trail ing edges ribs level upper section ribs wing removed building board excess trimmed off outer ribs flat lower surface contour normal wing tip shape procedure will produce nicely washed-out tip model unfortunately produces washin will have removed during covering Add trailing edge fillet sections wings building board Add Vzo-in fillers upper area root ribs flat can sanded spar fillet trailing edge vertical tail fin outlines formed using same technique wing tip TE sections should wrapped around form starting lower center area has flattest contour easiest area make splice required After sanding CyAing landing gear wires place structure ready cover entire model covered superfine Japanese tissue have no formation verify true color airplane best guess black-andwhite photos white blue leading edges wings black lettering fins photos show no registration markings reproduce scheme white tissue used blue areas done felt-tip markers accomplish lay out desired pattern clean white bond paper pencil Tape section tissue layout use straightedge French curves fine-tip marker outlines broad-tip marker used add extra color areas markers must waterproof have using Sanfords Marks-A-Lot markers pens easiest way make fin logos markings draw plain bond paper make photocopies Sections tissue can taped over copy acetone applied tissue brush dissolve ink As acetone evaporates portion ink will adhere tissue may require extra tries some inks will dissolve too easily make blob rather neat transfer have good success copies Cannon NP 270F copier cannot sure what ink types used premarked tissue cannot applied using dope thinner have using glue sticks water-shrinking tissue though glue sticks water proof making sure tissue wrapped over frame adheres least two sections best way have found wet tissue using coldcycle vaporizer easy regulate vaporizer output tissue can anything slightly damp soaking wet use whats required make tissue shrink especially large areas other areas treated usingwaterwith brush work out small wrinides etc Instead traditional dope finish use spray can apply light coat artists matte fixative over entire model full-size airplane somewhat different unique landing gear models gear relies wire flexi bility achieve scale appearance lower forks formed approxi mately 010 soft aluminium Litho plate excellent pull-off can top can used peanut can course upper strut section made -in-dia plastic straw aluminium tube will work well short section bamboo loosely fitted lower end straw tube hole drilled allow wire pass through fork Color plastic tube silver lower end wrap white bond paper upper section Trim tube 16 shorter length wing fork Place gear wire bamboo already position push against lower surface wing Use narrow end needle-nose pliers bend wire back upper tube slid down correct gear length produced Trim excess wire slip forks Mix smallest amount 5-mm epoxy can glue assembly upper tube fixed bamboo bamboo serves corner block wire make fork joint Add little epoxy inside fork wire extends aft Make wheels cutting circles cut h-in foam food tray Epoxy section 1/16 aluminum tube center wheel side flush about extending other side epoxy dry chuck ex tended end tube drill use sanding block round spinning foam until get tire cross section Color tire area black felt-tip marker minimum weight use Polly S Oily Black paint realistic coloring Cut off excess tube flush side foam Make up four paper discs slot markings shown drawings glue wheel sides using glue stick Install wheel forks short sections wire propeller heart good performance achieved model cannot take credit design origi nally came Jim Clems Bostonian Its made sections 1 6-oz plastic sour cream containers dimensions given drawing round birch toothpick blade outlines layout shown Set pitch 450 1-in radius point Make prop shaft cutting tooth pick down 2 marking its center Push pin through center tooth pick remove insert piece 032 wire Get wire square shaft CyA place Once glue sets remove wire twisting out leaves prop shaft cleaned hardened hole make rudimentary jig assemble propeller cannot freehand CyA blades place per plans have coloring props black MarksA-Lot markers after assembly CyA accelerator attacks marker fluid degree plastic blades Hying After construction complete remove warps might best done electric hair dryer Continued page 162 April 1987 65 no need enlarge tail model make fly well As draw ings model close possible original based materials available SMHTh ZNDUETNZRD 7555 S GbeI 5od Atmcadeo CA 93422 5I 456-1717 am InvIted join NATIONAL SOARING SOCIETY OFFICIAL AMA SOARING SPECIAL INTERESTGROUP YEARLY NSS SOAR-IN TOURNAMENTS NATION-WIDE EXCELLENCE AWARDS PROGRAM EXCELLENT 81-MONTHLY NEWSLETTER NSS FULLY SUPPORTS ThE F3B SOARING TEAM & 1SF SOARING PROGRAM NSS IS INVOLVED IN ThE ORGANIZATION AND OVERSEEING O ThE SOARING PORTION OF AMA NATS INCLUDING AWARDS BANQUET YEARLY DUES ARE $1200 SPECIAL FAMILY RATES NSS OFFICERS ARE FROM ALL 11 DISTRICTS Information Contact NSS Secretary/Treasurer R T DICK CR0 WLEY P0 Box 440342 Aurora CO 80044 towards supporting category Free Flight Club memberships $1250 per year says year-end renewal slip Should lower rates subscription newsletter am unable say can write Jim Adams SCAMPS Secretary 2538 W Spurgeon Santa Ana CA 92706 inquire accordingly Excuse now go dye some plastic See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 FF Old-Timers/Haught Continued page 62 much wasbin trailing edge down enough Most fliers start i Other trim factors same both methods trim situation think step through NEW FOURMOST PRODUCTS Bulk head Fitting Simple method feed fuel vent tubes through solId bulkheads DrIll hole No lB drIll sIze bulkhead fIrewall up 3/8 thick ProvIdes sealed tank compartment elImInates fuel line chaffIng Color coded easy identIfIcatIon MOULDED NYLON FUELPROOF WeIght 1/2GM EACH SIze 3/32 10 PRICE 2for $250 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 Bomb Release Fourmost Bomb-release mechanism SImple lIght weIght device Ideal fun-fly events Fasten unIt plane screws provIded Attach spring-loaded latch thread connect throttle rudder servo CorrosIon problem unit molded nylon sprIng stainless WeIght 1/10 OUNCE PRICE $250 503 357-2732 before attempting change Take easy keep flying Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Hemiptere/Backstrom Continued page 65 technique turn dryer twist warp Stratght place area hot air blast until tissue wrinkles flatten out remove hot air hold same position until cool may require applicationso have pa tience live central Texas have plenty grass fields fortestflymg calm winds testing Indoor models very rare As result usually make first test across bedroom onto bed Make up motor doubled 18-in-long Yn FAI rubber Proceed test glide adding clay necessary straight level glide model taken Indoor site glide tests continued using launch height about three feet appeared OK launch height increased normal standing post tion satisfied motor installed normally about 200 turns put few tries under power resulted removing clay added during glide tests adding downthrust now drawing other adjustment add bit clay right wing tip correct tendency turn too tightly left Fortunately model has rubber center very close model CG adding rubber causes very small trim change think best thing trimming model forget tandem wings just think model large tall CG about 60% MAC marked side view drawing CL Scale/Boss Continued page 66 NASA still alive making effort reestablish itself organization represent Scale modeling national level First respect NASA newsletter John Guenther said recognizes communica tion lack newsletter major problem within NASA solution may hand John hopes least part newsletter problem will solved through efforts Stan Alexander has just volun teered take job Replica editor Stan addition being current newsletter editor local Tennessee RC Club runs annual RC Scale Masters qualifying meet September Dixon TN appears Stan no stranger Scale modeling very well qualified handle job Replica editor wish him success tremendous undertaldng Stan has taken job Replica editor doesnt mean newsletter will miraculously appear regular intervals Stan going need material make publication guys gals heres come communication two-way street 1 62 Model Aviation AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY
Edition: Model Aviation - 1987/04
Page Numbers: 63, 64, 65, 162
THE OLDER EXPERIMENTAL tan dem-wing airplanes have always interested Except machines Samuel Langley built late 1 890s tandemwing ships have almost exclusively French lightplanes designs consider Maboussin Type 40 Hemip tere attractive dont know true aerodynamic advantage tandem configuration full-size airplanes models have built seem fly well itself aerodynamic advantage enough Hemiptere no exception has very stable flight pattern early duration flights about minute uncommon using amounts rubber guessed first considered building Scale Hemiptere could find photo graph called friend obscure airplane expert Bill Hannan course knew machine able provide three-view Weiss drawing near-Peanut-size model Just about begin Hemip tere came across listing model drawings sale Emannuel Fillion included another tandem-wing French lightplane Along order included letter mentioning interest Hemiptere Monsieur Fillion sent quite bit information response Among things Drawings pages 85 88 received set Peanut model drawings Maurice Bayet published 1975 Monseiur Bayets model found close three-view drawings did exactly match photographs great thing about dynamic evolving science like aircraft design offshoots backwashes occur various schemes tried Pea nut Scale model takes look French experi ments tandem wings led trying obtain best compromise between what could con firmed photographs what shown three-view drawing As now have same three-view drawing least three different sources model presented compromise resulted thanks Bill Han nan Emannuel Fillion Maurice Bayet lets get building Construction following instructions assume builder has basic know ledge stick-and-tissue construction methods will cover primarily tech aiques different ordinary along hints tricks Ive discovered through years Begin soaking four medium strips Ac-in balsa about 12 long water until sink fastest way accomplish place vertical tube filled water force under using plug other means keep sub merged two three days will sink Once saturated will used wing tips trailing edge outlines vertical fins strips soak make two copies drawings copy machine will reproduce enlarging reducing material careful copy machine youre using doesnt display percentage its copying chances good exactly 100% Compare original sure Use copy cut up templates etc other build fuselage built using conven tional box method rear post has two vertical members two sides assembled will 1/io thick Note rear vertical members left overlong provide negative incidence rear wing Due high thrust line necessary upper formers cut out allow clearance rubber Glue paper 1/32 formers help maintain strength after lower material removed glue stick easiest gluing method Dennison s works best Put 1Ao-sq cross members glue formers place rubber clearance cutouts Block-sand formers Yo sheeting will make contact having bulges sags Just before applying 1/ sheeting make clearance cutouts Dremel tool After sheeting installed including side lower cowl area put three 1/32 x 1/16-in stringers aft cockpit former ahead rear wing Coat sheet sections rear rubber peg cyanoacrylate CyA increase strength nose block piece -in sheeting 1/16 x /I6 strips added rear face fit front fuselage recommend Kulzer Hook added lower cross strip shown drawings hook prevent prop nose block coming out des troying trim should prop hit ceiling whatever small addition figured out friend Walt Kulzer worth adding Scale model flown indoors Use small Peck thrust bearing downthrust noted drawing have never able make free hand cutout resembles cockpit suggest sandpaper wrapped cylin der used shape cockpit opening Cut outlines wing tip trailing edge copy drawing Attach pieces poster board glue stick make forms Attach previously-soaked 1/20 sticks lead ing edge form short strip masking tape Proceed snug stick form add masking tape strips work around curved tip area Tape remainder strip straight trailing edge section strip should long enough go around tip also form trailing edge root rib Repeat opposite wing pin half flat board tip section elevated form straight upper surface wing Leave until dry Only wing rib shown plan easiest make same cut ribs curved areas length using upper spar reference Pin rib sets together block-sand 64 Model Aviation ne wean simple OT InS proioiype mee Tar Ufl exceiment Peauo caie moaei Ample wing area assists duration does long motorthis model capable carrying spirit Scale models Hemlptere rests data photos prototype Jim Clems prop lots area developed Bostonians suits model well exact shape cut spar notches Because ribs different thickness should stacked order minor deviations sanding progressive across wing Extra care will mean less sanding after assembly cuts made pin ribs building board Glue leading trail ing edges ribs level upper section ribs wing removed building board excess trimmed off outer ribs flat lower surface contour normal wing tip shape procedure will produce nicely washed-out tip model unfortunately produces washin will have removed during covering Add trailing edge fillet sections wings building board Add Vzo-in fillers upper area root ribs flat can sanded spar fillet trailing edge vertical tail fin outlines formed using same technique wing tip TE sections should wrapped around form starting lower center area has flattest contour easiest area make splice required After sanding CyAing landing gear wires place structure ready cover entire model covered superfine Japanese tissue have no formation verify true color airplane best guess black-andwhite photos white blue leading edges wings black lettering fins photos show no registration markings reproduce scheme white tissue used blue areas done felt-tip markers accomplish lay out desired pattern clean white bond paper pencil Tape section tissue layout use straightedge French curves fine-tip marker outlines broad-tip marker used add extra color areas markers must waterproof have using Sanfords Marks-A-Lot markers pens easiest way make fin logos markings draw plain bond paper make photocopies Sections tissue can taped over copy acetone applied tissue brush dissolve ink As acetone evaporates portion ink will adhere tissue may require extra tries some inks will dissolve too easily make blob rather neat transfer have good success copies Cannon NP 270F copier cannot sure what ink types used premarked tissue cannot applied using dope thinner have using glue sticks water-shrinking tissue though glue sticks water proof making sure tissue wrapped over frame adheres least two sections best way have found wet tissue using coldcycle vaporizer easy regulate vaporizer output tissue can anything slightly damp soaking wet use whats required make tissue shrink especially large areas other areas treated usingwaterwith brush work out small wrinides etc Instead traditional dope finish use spray can apply light coat artists matte fixative over entire model full-size airplane somewhat different unique landing gear models gear relies wire flexi bility achieve scale appearance lower forks formed approxi mately 010 soft aluminium Litho plate excellent pull-off can top can used peanut can course upper strut section made -in-dia plastic straw aluminium tube will work well short section bamboo loosely fitted lower end straw tube hole drilled allow wire pass through fork Color plastic tube silver lower end wrap white bond paper upper section Trim tube 16 shorter length wing fork Place gear wire bamboo already position push against lower surface wing Use narrow end needle-nose pliers bend wire back upper tube slid down correct gear length produced Trim excess wire slip forks Mix smallest amount 5-mm epoxy can glue assembly upper tube fixed bamboo bamboo serves corner block wire make fork joint Add little epoxy inside fork wire extends aft Make wheels cutting circles cut h-in foam food tray Epoxy section 1/16 aluminum tube center wheel side flush about extending other side epoxy dry chuck ex tended end tube drill use sanding block round spinning foam until get tire cross section Color tire area black felt-tip marker minimum weight use Polly S Oily Black paint realistic coloring Cut off excess tube flush side foam Make up four paper discs slot markings shown drawings glue wheel sides using glue stick Install wheel forks short sections wire propeller heart good performance achieved model cannot take credit design origi nally came Jim Clems Bostonian Its made sections 1 6-oz plastic sour cream containers dimensions given drawing round birch toothpick blade outlines layout shown Set pitch 450 1-in radius point Make prop shaft cutting tooth pick down 2 marking its center Push pin through center tooth pick remove insert piece 032 wire Get wire square shaft CyA place Once glue sets remove wire twisting out leaves prop shaft cleaned hardened hole make rudimentary jig assemble propeller cannot freehand CyA blades place per plans have coloring props black MarksA-Lot markers after assembly CyA accelerator attacks marker fluid degree plastic blades Hying After construction complete remove warps might best done electric hair dryer Continued page 162 April 1987 65 no need enlarge tail model make fly well As draw ings model close possible original based materials available SMHTh ZNDUETNZRD 7555 S GbeI 5od Atmcadeo CA 93422 5I 456-1717 am InvIted join NATIONAL SOARING SOCIETY OFFICIAL AMA SOARING SPECIAL INTERESTGROUP YEARLY NSS SOAR-IN TOURNAMENTS NATION-WIDE EXCELLENCE AWARDS PROGRAM EXCELLENT 81-MONTHLY NEWSLETTER NSS FULLY SUPPORTS ThE F3B SOARING TEAM & 1SF SOARING PROGRAM NSS IS INVOLVED IN ThE ORGANIZATION AND OVERSEEING O ThE SOARING PORTION OF AMA NATS INCLUDING AWARDS BANQUET YEARLY DUES ARE $1200 SPECIAL FAMILY RATES NSS OFFICERS ARE FROM ALL 11 DISTRICTS Information Contact NSS Secretary/Treasurer R T DICK CR0 WLEY P0 Box 440342 Aurora CO 80044 towards supporting category Free Flight Club memberships $1250 per year says year-end renewal slip Should lower rates subscription newsletter am unable say can write Jim Adams SCAMPS Secretary 2538 W Spurgeon Santa Ana CA 92706 inquire accordingly Excuse now go dye some plastic See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 FF Old-Timers/Haught Continued page 62 much wasbin trailing edge down enough Most fliers start i Other trim factors same both methods trim situation think step through NEW FOURMOST PRODUCTS Bulk head Fitting Simple method feed fuel vent tubes through solId bulkheads DrIll hole No lB drIll sIze bulkhead fIrewall up 3/8 thick ProvIdes sealed tank compartment elImInates fuel line chaffIng Color coded easy identIfIcatIon MOULDED NYLON FUELPROOF WeIght 1/2GM EACH SIze 3/32 10 PRICE 2for $250 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 Bomb Release Fourmost Bomb-release mechanism SImple lIght weIght device Ideal fun-fly events Fasten unIt plane screws provIded Attach spring-loaded latch thread connect throttle rudder servo CorrosIon problem unit molded nylon sprIng stainless WeIght 1/10 OUNCE PRICE $250 503 357-2732 before attempting change Take easy keep flying Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Hemiptere/Backstrom Continued page 65 technique turn dryer twist warp Stratght place area hot air blast until tissue wrinkles flatten out remove hot air hold same position until cool may require applicationso have pa tience live central Texas have plenty grass fields fortestflymg calm winds testing Indoor models very rare As result usually make first test across bedroom onto bed Make up motor doubled 18-in-long Yn FAI rubber Proceed test glide adding clay necessary straight level glide model taken Indoor site glide tests continued using launch height about three feet appeared OK launch height increased normal standing post tion satisfied motor installed normally about 200 turns put few tries under power resulted removing clay added during glide tests adding downthrust now drawing other adjustment add bit clay right wing tip correct tendency turn too tightly left Fortunately model has rubber center very close model CG adding rubber causes very small trim change think best thing trimming model forget tandem wings just think model large tall CG about 60% MAC marked side view drawing CL Scale/Boss Continued page 66 NASA still alive making effort reestablish itself organization represent Scale modeling national level First respect NASA newsletter John Guenther said recognizes communica tion lack newsletter major problem within NASA solution may hand John hopes least part newsletter problem will solved through efforts Stan Alexander has just volun teered take job Replica editor Stan addition being current newsletter editor local Tennessee RC Club runs annual RC Scale Masters qualifying meet September Dixon TN appears Stan no stranger Scale modeling very well qualified handle job Replica editor wish him success tremendous undertaldng Stan has taken job Replica editor doesnt mean newsletter will miraculously appear regular intervals Stan going need material make publication guys gals heres come communication two-way street 1 62 Model Aviation AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY
Edition: Model Aviation - 1987/04
Page Numbers: 63, 64, 65, 162
THE OLDER EXPERIMENTAL tan dem-wing airplanes have always interested Except machines Samuel Langley built late 1 890s tandemwing ships have almost exclusively French lightplanes designs consider Maboussin Type 40 Hemip tere attractive dont know true aerodynamic advantage tandem configuration full-size airplanes models have built seem fly well itself aerodynamic advantage enough Hemiptere no exception has very stable flight pattern early duration flights about minute uncommon using amounts rubber guessed first considered building Scale Hemiptere could find photo graph called friend obscure airplane expert Bill Hannan course knew machine able provide three-view Weiss drawing near-Peanut-size model Just about begin Hemip tere came across listing model drawings sale Emannuel Fillion included another tandem-wing French lightplane Along order included letter mentioning interest Hemiptere Monsieur Fillion sent quite bit information response Among things Drawings pages 85 88 received set Peanut model drawings Maurice Bayet published 1975 Monseiur Bayets model found close three-view drawings did exactly match photographs great thing about dynamic evolving science like aircraft design offshoots backwashes occur various schemes tried Pea nut Scale model takes look French experi ments tandem wings led trying obtain best compromise between what could con firmed photographs what shown three-view drawing As now have same three-view drawing least three different sources model presented compromise resulted thanks Bill Han nan Emannuel Fillion Maurice Bayet lets get building Construction following instructions assume builder has basic know ledge stick-and-tissue construction methods will cover primarily tech aiques different ordinary along hints tricks Ive discovered through years Begin soaking four medium strips Ac-in balsa about 12 long water until sink fastest way accomplish place vertical tube filled water force under using plug other means keep sub merged two three days will sink Once saturated will used wing tips trailing edge outlines vertical fins strips soak make two copies drawings copy machine will reproduce enlarging reducing material careful copy machine youre using doesnt display percentage its copying chances good exactly 100% Compare original sure Use copy cut up templates etc other build fuselage built using conven tional box method rear post has two vertical members two sides assembled will 1/io thick Note rear vertical members left overlong provide negative incidence rear wing Due high thrust line necessary upper formers cut out allow clearance rubber Glue paper 1/32 formers help maintain strength after lower material removed glue stick easiest gluing method Dennison s works best Put 1Ao-sq cross members glue formers place rubber clearance cutouts Block-sand formers Yo sheeting will make contact having bulges sags Just before applying 1/ sheeting make clearance cutouts Dremel tool After sheeting installed including side lower cowl area put three 1/32 x 1/16-in stringers aft cockpit former ahead rear wing Coat sheet sections rear rubber peg cyanoacrylate CyA increase strength nose block piece -in sheeting 1/16 x /I6 strips added rear face fit front fuselage recommend Kulzer Hook added lower cross strip shown drawings hook prevent prop nose block coming out des troying trim should prop hit ceiling whatever small addition figured out friend Walt Kulzer worth adding Scale model flown indoors Use small Peck thrust bearing downthrust noted drawing have never able make free hand cutout resembles cockpit suggest sandpaper wrapped cylin der used shape cockpit opening Cut outlines wing tip trailing edge copy drawing Attach pieces poster board glue stick make forms Attach previously-soaked 1/20 sticks lead ing edge form short strip masking tape Proceed snug stick form add masking tape strips work around curved tip area Tape remainder strip straight trailing edge section strip should long enough go around tip also form trailing edge root rib Repeat opposite wing pin half flat board tip section elevated form straight upper surface wing Leave until dry Only wing rib shown plan easiest make same cut ribs curved areas length using upper spar reference Pin rib sets together block-sand 64 Model Aviation ne wean simple OT InS proioiype mee Tar Ufl exceiment Peauo caie moaei Ample wing area assists duration does long motorthis model capable carrying spirit Scale models Hemlptere rests data photos prototype Jim Clems prop lots area developed Bostonians suits model well exact shape cut spar notches Because ribs different thickness should stacked order minor deviations sanding progressive across wing Extra care will mean less sanding after assembly cuts made pin ribs building board Glue leading trail ing edges ribs level upper section ribs wing removed building board excess trimmed off outer ribs flat lower surface contour normal wing tip shape procedure will produce nicely washed-out tip model unfortunately produces washin will have removed during covering Add trailing edge fillet sections wings building board Add Vzo-in fillers upper area root ribs flat can sanded spar fillet trailing edge vertical tail fin outlines formed using same technique wing tip TE sections should wrapped around form starting lower center area has flattest contour easiest area make splice required After sanding CyAing landing gear wires place structure ready cover entire model covered superfine Japanese tissue have no formation verify true color airplane best guess black-andwhite photos white blue leading edges wings black lettering fins photos show no registration markings reproduce scheme white tissue used blue areas done felt-tip markers accomplish lay out desired pattern clean white bond paper pencil Tape section tissue layout use straightedge French curves fine-tip marker outlines broad-tip marker used add extra color areas markers must waterproof have using Sanfords Marks-A-Lot markers pens easiest way make fin logos markings draw plain bond paper make photocopies Sections tissue can taped over copy acetone applied tissue brush dissolve ink As acetone evaporates portion ink will adhere tissue may require extra tries some inks will dissolve too easily make blob rather neat transfer have good success copies Cannon NP 270F copier cannot sure what ink types used premarked tissue cannot applied using dope thinner have using glue sticks water-shrinking tissue though glue sticks water proof making sure tissue wrapped over frame adheres least two sections best way have found wet tissue using coldcycle vaporizer easy regulate vaporizer output tissue can anything slightly damp soaking wet use whats required make tissue shrink especially large areas other areas treated usingwaterwith brush work out small wrinides etc Instead traditional dope finish use spray can apply light coat artists matte fixative over entire model full-size airplane somewhat different unique landing gear models gear relies wire flexi bility achieve scale appearance lower forks formed approxi mately 010 soft aluminium Litho plate excellent pull-off can top can used peanut can course upper strut section made -in-dia plastic straw aluminium tube will work well short section bamboo loosely fitted lower end straw tube hole drilled allow wire pass through fork Color plastic tube silver lower end wrap white bond paper upper section Trim tube 16 shorter length wing fork Place gear wire bamboo already position push against lower surface wing Use narrow end needle-nose pliers bend wire back upper tube slid down correct gear length produced Trim excess wire slip forks Mix smallest amount 5-mm epoxy can glue assembly upper tube fixed bamboo bamboo serves corner block wire make fork joint Add little epoxy inside fork wire extends aft Make wheels cutting circles cut h-in foam food tray Epoxy section 1/16 aluminum tube center wheel side flush about extending other side epoxy dry chuck ex tended end tube drill use sanding block round spinning foam until get tire cross section Color tire area black felt-tip marker minimum weight use Polly S Oily Black paint realistic coloring Cut off excess tube flush side foam Make up four paper discs slot markings shown drawings glue wheel sides using glue stick Install wheel forks short sections wire propeller heart good performance achieved model cannot take credit design origi nally came Jim Clems Bostonian Its made sections 1 6-oz plastic sour cream containers dimensions given drawing round birch toothpick blade outlines layout shown Set pitch 450 1-in radius point Make prop shaft cutting tooth pick down 2 marking its center Push pin through center tooth pick remove insert piece 032 wire Get wire square shaft CyA place Once glue sets remove wire twisting out leaves prop shaft cleaned hardened hole make rudimentary jig assemble propeller cannot freehand CyA blades place per plans have coloring props black MarksA-Lot markers after assembly CyA accelerator attacks marker fluid degree plastic blades Hying After construction complete remove warps might best done electric hair dryer Continued page 162 April 1987 65 no need enlarge tail model make fly well As draw ings model close possible original based materials available SMHTh ZNDUETNZRD 7555 S GbeI 5od Atmcadeo CA 93422 5I 456-1717 am InvIted join NATIONAL SOARING SOCIETY OFFICIAL AMA SOARING SPECIAL INTERESTGROUP YEARLY NSS SOAR-IN TOURNAMENTS NATION-WIDE EXCELLENCE AWARDS PROGRAM EXCELLENT 81-MONTHLY NEWSLETTER NSS FULLY SUPPORTS ThE F3B SOARING TEAM & 1SF SOARING PROGRAM NSS IS INVOLVED IN ThE ORGANIZATION AND OVERSEEING O ThE SOARING PORTION OF AMA NATS INCLUDING AWARDS BANQUET YEARLY DUES ARE $1200 SPECIAL FAMILY RATES NSS OFFICERS ARE FROM ALL 11 DISTRICTS Information Contact NSS Secretary/Treasurer R T DICK CR0 WLEY P0 Box 440342 Aurora CO 80044 towards supporting category Free Flight Club memberships $1250 per year says year-end renewal slip Should lower rates subscription newsletter am unable say can write Jim Adams SCAMPS Secretary 2538 W Spurgeon Santa Ana CA 92706 inquire accordingly Excuse now go dye some plastic See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 FF Old-Timers/Haught Continued page 62 much wasbin trailing edge down enough Most fliers start i Other trim factors same both methods trim situation think step through NEW FOURMOST PRODUCTS Bulk head Fitting Simple method feed fuel vent tubes through solId bulkheads DrIll hole No lB drIll sIze bulkhead fIrewall up 3/8 thick ProvIdes sealed tank compartment elImInates fuel line chaffIng Color coded easy identIfIcatIon MOULDED NYLON FUELPROOF WeIght 1/2GM EACH SIze 3/32 10 PRICE 2for $250 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 Bomb Release Fourmost Bomb-release mechanism SImple lIght weIght device Ideal fun-fly events Fasten unIt plane screws provIded Attach spring-loaded latch thread connect throttle rudder servo CorrosIon problem unit molded nylon sprIng stainless WeIght 1/10 OUNCE PRICE $250 503 357-2732 before attempting change Take easy keep flying Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Hemiptere/Backstrom Continued page 65 technique turn dryer twist warp Stratght place area hot air blast until tissue wrinkles flatten out remove hot air hold same position until cool may require applicationso have pa tience live central Texas have plenty grass fields fortestflymg calm winds testing Indoor models very rare As result usually make first test across bedroom onto bed Make up motor doubled 18-in-long Yn FAI rubber Proceed test glide adding clay necessary straight level glide model taken Indoor site glide tests continued using launch height about three feet appeared OK launch height increased normal standing post tion satisfied motor installed normally about 200 turns put few tries under power resulted removing clay added during glide tests adding downthrust now drawing other adjustment add bit clay right wing tip correct tendency turn too tightly left Fortunately model has rubber center very close model CG adding rubber causes very small trim change think best thing trimming model forget tandem wings just think model large tall CG about 60% MAC marked side view drawing CL Scale/Boss Continued page 66 NASA still alive making effort reestablish itself organization represent Scale modeling national level First respect NASA newsletter John Guenther said recognizes communica tion lack newsletter major problem within NASA solution may hand John hopes least part newsletter problem will solved through efforts Stan Alexander has just volun teered take job Replica editor Stan addition being current newsletter editor local Tennessee RC Club runs annual RC Scale Masters qualifying meet September Dixon TN appears Stan no stranger Scale modeling very well qualified handle job Replica editor wish him success tremendous undertaldng Stan has taken job Replica editor doesnt mean newsletter will miraculously appear regular intervals Stan going need material make publication guys gals heres come communication two-way street 1 62 Model Aviation AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY
Edition: Model Aviation - 1987/04
Page Numbers: 63, 64, 65, 162
THE OLDER EXPERIMENTAL tan dem-wing airplanes have always interested Except machines Samuel Langley built late 1 890s tandemwing ships have almost exclusively French lightplanes designs consider Maboussin Type 40 Hemip tere attractive dont know true aerodynamic advantage tandem configuration full-size airplanes models have built seem fly well itself aerodynamic advantage enough Hemiptere no exception has very stable flight pattern early duration flights about minute uncommon using amounts rubber guessed first considered building Scale Hemiptere could find photo graph called friend obscure airplane expert Bill Hannan course knew machine able provide three-view Weiss drawing near-Peanut-size model Just about begin Hemip tere came across listing model drawings sale Emannuel Fillion included another tandem-wing French lightplane Along order included letter mentioning interest Hemiptere Monsieur Fillion sent quite bit information response Among things Drawings pages 85 88 received set Peanut model drawings Maurice Bayet published 1975 Monseiur Bayets model found close three-view drawings did exactly match photographs great thing about dynamic evolving science like aircraft design offshoots backwashes occur various schemes tried Pea nut Scale model takes look French experi ments tandem wings led trying obtain best compromise between what could con firmed photographs what shown three-view drawing As now have same three-view drawing least three different sources model presented compromise resulted thanks Bill Han nan Emannuel Fillion Maurice Bayet lets get building Construction following instructions assume builder has basic know ledge stick-and-tissue construction methods will cover primarily tech aiques different ordinary along hints tricks Ive discovered through years Begin soaking four medium strips Ac-in balsa about 12 long water until sink fastest way accomplish place vertical tube filled water force under using plug other means keep sub merged two three days will sink Once saturated will used wing tips trailing edge outlines vertical fins strips soak make two copies drawings copy machine will reproduce enlarging reducing material careful copy machine youre using doesnt display percentage its copying chances good exactly 100% Compare original sure Use copy cut up templates etc other build fuselage built using conven tional box method rear post has two vertical members two sides assembled will 1/io thick Note rear vertical members left overlong provide negative incidence rear wing Due high thrust line necessary upper formers cut out allow clearance rubber Glue paper 1/32 formers help maintain strength after lower material removed glue stick easiest gluing method Dennison s works best Put 1Ao-sq cross members glue formers place rubber clearance cutouts Block-sand formers Yo sheeting will make contact having bulges sags Just before applying 1/ sheeting make clearance cutouts Dremel tool After sheeting installed including side lower cowl area put three 1/32 x 1/16-in stringers aft cockpit former ahead rear wing Coat sheet sections rear rubber peg cyanoacrylate CyA increase strength nose block piece -in sheeting 1/16 x /I6 strips added rear face fit front fuselage recommend Kulzer Hook added lower cross strip shown drawings hook prevent prop nose block coming out des troying trim should prop hit ceiling whatever small addition figured out friend Walt Kulzer worth adding Scale model flown indoors Use small Peck thrust bearing downthrust noted drawing have never able make free hand cutout resembles cockpit suggest sandpaper wrapped cylin der used shape cockpit opening Cut outlines wing tip trailing edge copy drawing Attach pieces poster board glue stick make forms Attach previously-soaked 1/20 sticks lead ing edge form short strip masking tape Proceed snug stick form add masking tape strips work around curved tip area Tape remainder strip straight trailing edge section strip should long enough go around tip also form trailing edge root rib Repeat opposite wing pin half flat board tip section elevated form straight upper surface wing Leave until dry Only wing rib shown plan easiest make same cut ribs curved areas length using upper spar reference Pin rib sets together block-sand 64 Model Aviation ne wean simple OT InS proioiype mee Tar Ufl exceiment Peauo caie moaei Ample wing area assists duration does long motorthis model capable carrying spirit Scale models Hemlptere rests data photos prototype Jim Clems prop lots area developed Bostonians suits model well exact shape cut spar notches Because ribs different thickness should stacked order minor deviations sanding progressive across wing Extra care will mean less sanding after assembly cuts made pin ribs building board Glue leading trail ing edges ribs level upper section ribs wing removed building board excess trimmed off outer ribs flat lower surface contour normal wing tip shape procedure will produce nicely washed-out tip model unfortunately produces washin will have removed during covering Add trailing edge fillet sections wings building board Add Vzo-in fillers upper area root ribs flat can sanded spar fillet trailing edge vertical tail fin outlines formed using same technique wing tip TE sections should wrapped around form starting lower center area has flattest contour easiest area make splice required After sanding CyAing landing gear wires place structure ready cover entire model covered superfine Japanese tissue have no formation verify true color airplane best guess black-andwhite photos white blue leading edges wings black lettering fins photos show no registration markings reproduce scheme white tissue used blue areas done felt-tip markers accomplish lay out desired pattern clean white bond paper pencil Tape section tissue layout use straightedge French curves fine-tip marker outlines broad-tip marker used add extra color areas markers must waterproof have using Sanfords Marks-A-Lot markers pens easiest way make fin logos markings draw plain bond paper make photocopies Sections tissue can taped over copy acetone applied tissue brush dissolve ink As acetone evaporates portion ink will adhere tissue may require extra tries some inks will dissolve too easily make blob rather neat transfer have good success copies Cannon NP 270F copier cannot sure what ink types used premarked tissue cannot applied using dope thinner have using glue sticks water-shrinking tissue though glue sticks water proof making sure tissue wrapped over frame adheres least two sections best way have found wet tissue using coldcycle vaporizer easy regulate vaporizer output tissue can anything slightly damp soaking wet use whats required make tissue shrink especially large areas other areas treated usingwaterwith brush work out small wrinides etc Instead traditional dope finish use spray can apply light coat artists matte fixative over entire model full-size airplane somewhat different unique landing gear models gear relies wire flexi bility achieve scale appearance lower forks formed approxi mately 010 soft aluminium Litho plate excellent pull-off can top can used peanut can course upper strut section made -in-dia plastic straw aluminium tube will work well short section bamboo loosely fitted lower end straw tube hole drilled allow wire pass through fork Color plastic tube silver lower end wrap white bond paper upper section Trim tube 16 shorter length wing fork Place gear wire bamboo already position push against lower surface wing Use narrow end needle-nose pliers bend wire back upper tube slid down correct gear length produced Trim excess wire slip forks Mix smallest amount 5-mm epoxy can glue assembly upper tube fixed bamboo bamboo serves corner block wire make fork joint Add little epoxy inside fork wire extends aft Make wheels cutting circles cut h-in foam food tray Epoxy section 1/16 aluminum tube center wheel side flush about extending other side epoxy dry chuck ex tended end tube drill use sanding block round spinning foam until get tire cross section Color tire area black felt-tip marker minimum weight use Polly S Oily Black paint realistic coloring Cut off excess tube flush side foam Make up four paper discs slot markings shown drawings glue wheel sides using glue stick Install wheel forks short sections wire propeller heart good performance achieved model cannot take credit design origi nally came Jim Clems Bostonian Its made sections 1 6-oz plastic sour cream containers dimensions given drawing round birch toothpick blade outlines layout shown Set pitch 450 1-in radius point Make prop shaft cutting tooth pick down 2 marking its center Push pin through center tooth pick remove insert piece 032 wire Get wire square shaft CyA place Once glue sets remove wire twisting out leaves prop shaft cleaned hardened hole make rudimentary jig assemble propeller cannot freehand CyA blades place per plans have coloring props black MarksA-Lot markers after assembly CyA accelerator attacks marker fluid degree plastic blades Hying After construction complete remove warps might best done electric hair dryer Continued page 162 April 1987 65 no need enlarge tail model make fly well As draw ings model close possible original based materials available SMHTh ZNDUETNZRD 7555 S GbeI 5od Atmcadeo CA 93422 5I 456-1717 am InvIted join NATIONAL SOARING SOCIETY OFFICIAL AMA SOARING SPECIAL INTERESTGROUP YEARLY NSS SOAR-IN TOURNAMENTS NATION-WIDE EXCELLENCE AWARDS PROGRAM EXCELLENT 81-MONTHLY NEWSLETTER NSS FULLY SUPPORTS ThE F3B SOARING TEAM & 1SF SOARING PROGRAM NSS IS INVOLVED IN ThE ORGANIZATION AND OVERSEEING O ThE SOARING PORTION OF AMA NATS INCLUDING AWARDS BANQUET YEARLY DUES ARE $1200 SPECIAL FAMILY RATES NSS OFFICERS ARE FROM ALL 11 DISTRICTS Information Contact NSS Secretary/Treasurer R T DICK CR0 WLEY P0 Box 440342 Aurora CO 80044 towards supporting category Free Flight Club memberships $1250 per year says year-end renewal slip Should lower rates subscription newsletter am unable say can write Jim Adams SCAMPS Secretary 2538 W Spurgeon Santa Ana CA 92706 inquire accordingly Excuse now go dye some plastic See ya downwind Harry Murphy 3824 Oakwood Blvd Ander son IN 46011 FF Old-Timers/Haught Continued page 62 much wasbin trailing edge down enough Most fliers start i Other trim factors same both methods trim situation think step through NEW FOURMOST PRODUCTS Bulk head Fitting Simple method feed fuel vent tubes through solId bulkheads DrIll hole No lB drIll sIze bulkhead fIrewall up 3/8 thick ProvIdes sealed tank compartment elImInates fuel line chaffIng Color coded easy identIfIcatIon MOULDED NYLON FUELPROOF WeIght 1/2GM EACH SIze 3/32 10 PRICE 2for $250 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 Bomb Release Fourmost Bomb-release mechanism SImple lIght weIght device Ideal fun-fly events Fasten unIt plane screws provIded Attach spring-loaded latch thread connect throttle rudder servo CorrosIon problem unit molded nylon sprIng stainless WeIght 1/10 OUNCE PRICE $250 503 357-2732 before attempting change Take easy keep flying Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Hemiptere/Backstrom Continued page 65 technique turn dryer twist warp Stratght place area hot air blast until tissue wrinkles flatten out remove hot air hold same position until cool may require applicationso have pa tience live central Texas have plenty grass fields fortestflymg calm winds testing Indoor models very rare As result usually make first test across bedroom onto bed Make up motor doubled 18-in-long Yn FAI rubber Proceed test glide adding clay necessary straight level glide model taken Indoor site glide tests continued using launch height about three feet appeared OK launch height increased normal standing post tion satisfied motor installed normally about 200 turns put few tries under power resulted removing clay added during glide tests adding downthrust now drawing other adjustment add bit clay right wing tip correct tendency turn too tightly left Fortunately model has rubber center very close model CG adding rubber causes very small trim change think best thing trimming model forget tandem wings just think model large tall CG about 60% MAC marked side view drawing CL Scale/Boss Continued page 66 NASA still alive making effort reestablish itself organization represent Scale modeling national level First respect NASA newsletter John Guenther said recognizes communica tion lack newsletter major problem within NASA solution may hand John hopes least part newsletter problem will solved through efforts Stan Alexander has just volun teered take job Replica editor Stan addition being current newsletter editor local Tennessee RC Club runs annual RC Scale Masters qualifying meet September Dixon TN appears Stan no stranger Scale modeling very well qualified handle job Replica editor wish him success tremendous undertaldng Stan has taken job Replica editor doesnt mean newsletter will miraculously appear regular intervals Stan going need material make publication guys gals heres come communication two-way street 1 62 Model Aviation AVAILABLE AT AMERICAS FINEST HOBBY SHOPS$495 DISTRIBUTED BY