-u I Heres fun Indoor Rubber model isnt delicate scare anyone away no matter what kind models have built before Make stuff scrap binand some retrievals trash full-size plan presented pages 90-91E L F Randolph IF YOU ARE am RCer has nervous jitters want fly circumstances weather make trip field impossible airplane will fly inside house may answer Lil Pieces designed just purpose fills bill better antici pated materials build small model likely will found trash can scrap bin Drink can tops cardboard newspaper rubberbands trash 1/16 3/32 balsa scrap bin useful Believe economical build name model ws stolen Walt Van Gorder gave name Pieces very fine Easy B model Janu ary 1982 Model Aviation because made use parts other successful Indoor designs Lil Pieces smaller version slight changes noticeable underslung rudder seems give consistent flight path under 72 Model Aviation card-stock template cuts both top bottom rib pass razor knife Keep knife vertical eliminate beveled edges wing template Cut cardboard spars held place strips cardboard pinned building board Place no pins sparsl Note triangular notches cut template make way ribs varying amounts power LII Pieces flown living room den bedroom place 8 10 sq ft ceiling available bed room must circle ceiling fan wilt consistently fly 1 mm before hit ting wall fan chair bed etc school auditorium 18-ft ceiling will fly 3 mm looking back have never built Indoor type model please build other reason see fingers still work Construction Pick out lightest sheet 1/16 balsa reserve stocknot softest lightest Strip four 1/16 sq strips 18 long dont have stripper use metal straight edge modeling knife best strips lightweight crispness about end 36-in strip usually better other purpose have some lightweight 1/32 sheet have what need cut piece about 6 long good end 1/16 sheet sand down 1/32 lot easier sounds Tape piece 100-grit sandpaper bench put balsa sheet go sanding block sandpaper bench keeps sheet place doesnt move around Turn sheet over around sand possible sand sheet 1/100-in thickness case 1/32-in thin enough Now materials handI/16 sq spars 1/32 ribs prop blades motor stick 3/32 3/16 should piece -scrap box 3/32 sq prop can cut Make rib template shown plans file-folder-type cardboard cut piece 1/32 sheet same width template Cut eight ribs 1/32 sheet making first cut around top template move template down 1/16 making another cut Instant rib wing uses five ribs other three ribs will go stab just trim trailing edge make fit May 1983 73 easiest way apply covering glue stick adhesive Smooth tissue covering center wing covered before Just rub around edges doesnt absorb wood gluing tips place dihedral loint 1/32-in drill held modeling knife used make two holes Before bending thrust beaing shape Cut slot holes can-top aluminum thrust bearing holes inch apart end material Dont try make cut just knife slice two ways make wing stab /4 x 2-in strips cardboard will need 16 hold spars place over plan other way make template wing stab out cardboard hold spars against same cardboard strips Pins go through cardboard spars photos show template method have built quite few little air planes template can build flat surface use plans build just model card board strip method quickest Cut cardboard /4-in strips cut 2-in lengths strips Pin four strips over plans along inside leading edge between rib loca tions Put strip 1/16 sq balsa place hold four strips pinned along outside opposing four inside Hold trailing edge place same way Glue three full-size ribs between spars model airplane cement best because lightest cyanoacrylate CyA fine Trim /2 trailing edge two ribs glue tips glue has set cut through lead ing edge dihedral breaks trailing edge already separate pieces nor glue dihedral time stab rudder built same way Cut length three remaining wing ribs trailing edge form stab ribs rudder boom built piece Cut motor stick lightweight 3/32-in stock lightly sand edges thrust bearing made drilling two 1/32-in holes inch apart light alu minum sheet cutting bearing out scissors aluminum sheet top aluminum drink can Cut slit holes end bearing razor-sharp knife Dont try cut once go over slit lightly several times until goes way through Bend bearing shape shown plans photos hole slit back part bearing bent way gooseneck hook prop shaft will slide after going through front hole Glue bearing front motor stick bend glue rubber motor hook rear Bevel side boom angle shown plans glue motor stick wing held place motor stick tissue tubes glued side stick Now time make tubes Cut three four strips tissue V2 x form tubes rolling tissue over length 1/16-in music wire using white glue adhesive photo shows done quite easy Moistening edge tissue tip tongue will help start wire Make full turn tissue wire rolling wire tissue between fingers Apply small bead white glue along seam continue roll tissue wire before glue will roll between layers tissue hold place tissue rolled slip tube wire thumbnail onto piece wax paper dry practice better tubes will Use white glue aliphatic resin form tubes little hand cream smoothed wire before tube rolled will help slide off wire glue drying sand 4-in piece 1/16 sq balsa dowel Fold piece 150-grit sandpaper twirl balsa between fingers whle running out folded sandpaper balsa dowels will wing posts hold wing above motor stick will slip Continued page 170 74 Model Aviation completed bearing glued place slot rear bearing bent allow hook prop shaft curl Tissue tubes formed 1/16-in music wire roiling tissue some white glue between fingers Slide oft tube onto wax paper Round balsa dowels wing posts made twirling 1/16 sq balsa between sheets sandpaper Move balsa back forth twirled Before gluing wing mounts place find balance point motor stick complete tail prop rubber tissue tubes should placed equal distance fore aft balance point speed back up again because creased diameter Therefore propulsive efficiency down again resulting need engine power output 239 bhp very doubtful could ever get kind performance out 15 cu engine What really trying show interrelation between number blades prop amount thrust trying get constant values rpm airspeed Note chief enemy high tip speed propthe propulsive ef ficiency gets lots lower tip speeds get up around 1000 ft/sec Also evident fact weve got have clean model have hope getting high speeds power available 15 discussion will continued next column Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 71 subsejiber support contributions Picture qual ity excellent Ads planned limited materials interest Control Line smaller suppliers Computer-filed supplier lists member ship lists like will available Full-sized plans will available models published Copies technical reports etc planned future availability selected hard-to-get spe cialty supplies etc Frankly experiment see Control Line really dead way some people say dont think Write support Coalition concept refuse believe Control Line gone sample copy 37g stamp & envelope subscriptioni $15/yr Laird Jackson 2322 Wil son Ave Bristol PA 19007 Editors note subscription price persons aged 19 years older plus residents foreign countries Persons age 18 younger can subscribe $750/year Both subscription rates include 50 NCLC membership fee RMcM received copy Flying Lines excellent Northwestern newsletter published Mike Hazel 1411 Bryant Ave Cottage Grove OR 97424 particular newsletter virtually full con test results random building tips flea market items soapbox opinionated modelers Mike also periodically has rating system Northwestern Iliers rates contest performance throughout year newsletter certainly gives observation competitors doing Northwest area provides some interesting reading Racing competitors John Ballard 10102 Kimblewick Dr Louis ville KY 40223 Lii Pieces/Randolph Continued page 74 two tissue tubes airplane completed method wing mounting makes possible adjust incidence well remove wing storage Incidentally airplane another just like will fit shoe box ease Cover surfaces tissue glue stick sold stationery stores school supply sections other stores makes good adhesive tissue glue stick easy clean use doesnt wet tissue structure After covering rudder stab glue stab place above rudder boom left tip about /2 higher right seen back helps airplane circle left Cover wing center first glue tips place proper dihedral glue has set cover tips Cut two wing posts balsa dowel front longer back shown plan glue wtng /2 right center Looking front bottom forward post should slanted slightly left centeror towards right wing posts inserted tubes will cause some washin left wing leading edge higher trailing edge Cut propeller blades 1/32 sheet Drill carve piece 3/32 sq balsa shown plans form hub glue blades place should right angles other 450 angle shaft Bend shaft 1/32-in wire glue prop hub Slip small glass bead over shaft insert shaft front bearing rotate little until slips rear bearing Place loop rublr motor stick prop/stab/rudder assemblage find center balance looping thread around motor stick moving fore aft until balance point found Mark spot Cut two tissue tubes /4-in length piece balsa dowel dont crush Glue motor stick front tube should 11/4 ward mark aft 2 behind first sure straight up down flat against motor stick airplane now complete best rubber motor airplane/ prop combination 10- 12-in loop 040 x 043-in FAI Rubber isnt available loop three #16 rubberbands together thats skinny kind comes wrapped around newspaper Lubricate rubber motor little Armor-All stretch out about five times its length hold minute two stretching will break rubber make possible wind few extra turns Slip wing posts tissue tubes way bottom Install rubber motor wind about 100 turns launch model should have sort powered glide rather tight flat circle no sign stall model dives raise front wing post tube stalls raise aft post correct rubber motor can best wound unhooking rear hook attach ing geared winder stretching rubber out about three times its length pack ing turns winder moved back original length motor newspaper rubberbands will take about 800 turns good contest rubber about 1500 Beamed ceilings arent good flat smooth ones let Lil Pieces gather lot cobwebs Thrill/Younger Continued paqe 75 best ways introduce boys girls modeling teach class build fly Delta Dart simple almost fool-proof novice builder can build hour can buy inexpensively large quantities Complete instructions included kit have helped teach about 30 classes can assure piece cake modeler cati classes taught can 170 Model Aviation
Edition: Model Aviation - 1983/05
Page Numbers: 72, 73, 74, 170
-u I Heres fun Indoor Rubber model isnt delicate scare anyone away no matter what kind models have built before Make stuff scrap binand some retrievals trash full-size plan presented pages 90-91E L F Randolph IF YOU ARE am RCer has nervous jitters want fly circumstances weather make trip field impossible airplane will fly inside house may answer Lil Pieces designed just purpose fills bill better antici pated materials build small model likely will found trash can scrap bin Drink can tops cardboard newspaper rubberbands trash 1/16 3/32 balsa scrap bin useful Believe economical build name model ws stolen Walt Van Gorder gave name Pieces very fine Easy B model Janu ary 1982 Model Aviation because made use parts other successful Indoor designs Lil Pieces smaller version slight changes noticeable underslung rudder seems give consistent flight path under 72 Model Aviation card-stock template cuts both top bottom rib pass razor knife Keep knife vertical eliminate beveled edges wing template Cut cardboard spars held place strips cardboard pinned building board Place no pins sparsl Note triangular notches cut template make way ribs varying amounts power LII Pieces flown living room den bedroom place 8 10 sq ft ceiling available bed room must circle ceiling fan wilt consistently fly 1 mm before hit ting wall fan chair bed etc school auditorium 18-ft ceiling will fly 3 mm looking back have never built Indoor type model please build other reason see fingers still work Construction Pick out lightest sheet 1/16 balsa reserve stocknot softest lightest Strip four 1/16 sq strips 18 long dont have stripper use metal straight edge modeling knife best strips lightweight crispness about end 36-in strip usually better other purpose have some lightweight 1/32 sheet have what need cut piece about 6 long good end 1/16 sheet sand down 1/32 lot easier sounds Tape piece 100-grit sandpaper bench put balsa sheet go sanding block sandpaper bench keeps sheet place doesnt move around Turn sheet over around sand possible sand sheet 1/100-in thickness case 1/32-in thin enough Now materials handI/16 sq spars 1/32 ribs prop blades motor stick 3/32 3/16 should piece -scrap box 3/32 sq prop can cut Make rib template shown plans file-folder-type cardboard cut piece 1/32 sheet same width template Cut eight ribs 1/32 sheet making first cut around top template move template down 1/16 making another cut Instant rib wing uses five ribs other three ribs will go stab just trim trailing edge make fit May 1983 73 easiest way apply covering glue stick adhesive Smooth tissue covering center wing covered before Just rub around edges doesnt absorb wood gluing tips place dihedral loint 1/32-in drill held modeling knife used make two holes Before bending thrust beaing shape Cut slot holes can-top aluminum thrust bearing holes inch apart end material Dont try make cut just knife slice two ways make wing stab /4 x 2-in strips cardboard will need 16 hold spars place over plan other way make template wing stab out cardboard hold spars against same cardboard strips Pins go through cardboard spars photos show template method have built quite few little air planes template can build flat surface use plans build just model card board strip method quickest Cut cardboard /4-in strips cut 2-in lengths strips Pin four strips over plans along inside leading edge between rib loca tions Put strip 1/16 sq balsa place hold four strips pinned along outside opposing four inside Hold trailing edge place same way Glue three full-size ribs between spars model airplane cement best because lightest cyanoacrylate CyA fine Trim /2 trailing edge two ribs glue tips glue has set cut through lead ing edge dihedral breaks trailing edge already separate pieces nor glue dihedral time stab rudder built same way Cut length three remaining wing ribs trailing edge form stab ribs rudder boom built piece Cut motor stick lightweight 3/32-in stock lightly sand edges thrust bearing made drilling two 1/32-in holes inch apart light alu minum sheet cutting bearing out scissors aluminum sheet top aluminum drink can Cut slit holes end bearing razor-sharp knife Dont try cut once go over slit lightly several times until goes way through Bend bearing shape shown plans photos hole slit back part bearing bent way gooseneck hook prop shaft will slide after going through front hole Glue bearing front motor stick bend glue rubber motor hook rear Bevel side boom angle shown plans glue motor stick wing held place motor stick tissue tubes glued side stick Now time make tubes Cut three four strips tissue V2 x form tubes rolling tissue over length 1/16-in music wire using white glue adhesive photo shows done quite easy Moistening edge tissue tip tongue will help start wire Make full turn tissue wire rolling wire tissue between fingers Apply small bead white glue along seam continue roll tissue wire before glue will roll between layers tissue hold place tissue rolled slip tube wire thumbnail onto piece wax paper dry practice better tubes will Use white glue aliphatic resin form tubes little hand cream smoothed wire before tube rolled will help slide off wire glue drying sand 4-in piece 1/16 sq balsa dowel Fold piece 150-grit sandpaper twirl balsa between fingers whle running out folded sandpaper balsa dowels will wing posts hold wing above motor stick will slip Continued page 170 74 Model Aviation completed bearing glued place slot rear bearing bent allow hook prop shaft curl Tissue tubes formed 1/16-in music wire roiling tissue some white glue between fingers Slide oft tube onto wax paper Round balsa dowels wing posts made twirling 1/16 sq balsa between sheets sandpaper Move balsa back forth twirled Before gluing wing mounts place find balance point motor stick complete tail prop rubber tissue tubes should placed equal distance fore aft balance point speed back up again because creased diameter Therefore propulsive efficiency down again resulting need engine power output 239 bhp very doubtful could ever get kind performance out 15 cu engine What really trying show interrelation between number blades prop amount thrust trying get constant values rpm airspeed Note chief enemy high tip speed propthe propulsive ef ficiency gets lots lower tip speeds get up around 1000 ft/sec Also evident fact weve got have clean model have hope getting high speeds power available 15 discussion will continued next column Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 71 subsejiber support contributions Picture qual ity excellent Ads planned limited materials interest Control Line smaller suppliers Computer-filed supplier lists member ship lists like will available Full-sized plans will available models published Copies technical reports etc planned future availability selected hard-to-get spe cialty supplies etc Frankly experiment see Control Line really dead way some people say dont think Write support Coalition concept refuse believe Control Line gone sample copy 37g stamp & envelope subscriptioni $15/yr Laird Jackson 2322 Wil son Ave Bristol PA 19007 Editors note subscription price persons aged 19 years older plus residents foreign countries Persons age 18 younger can subscribe $750/year Both subscription rates include 50 NCLC membership fee RMcM received copy Flying Lines excellent Northwestern newsletter published Mike Hazel 1411 Bryant Ave Cottage Grove OR 97424 particular newsletter virtually full con test results random building tips flea market items soapbox opinionated modelers Mike also periodically has rating system Northwestern Iliers rates contest performance throughout year newsletter certainly gives observation competitors doing Northwest area provides some interesting reading Racing competitors John Ballard 10102 Kimblewick Dr Louis ville KY 40223 Lii Pieces/Randolph Continued page 74 two tissue tubes airplane completed method wing mounting makes possible adjust incidence well remove wing storage Incidentally airplane another just like will fit shoe box ease Cover surfaces tissue glue stick sold stationery stores school supply sections other stores makes good adhesive tissue glue stick easy clean use doesnt wet tissue structure After covering rudder stab glue stab place above rudder boom left tip about /2 higher right seen back helps airplane circle left Cover wing center first glue tips place proper dihedral glue has set cover tips Cut two wing posts balsa dowel front longer back shown plan glue wtng /2 right center Looking front bottom forward post should slanted slightly left centeror towards right wing posts inserted tubes will cause some washin left wing leading edge higher trailing edge Cut propeller blades 1/32 sheet Drill carve piece 3/32 sq balsa shown plans form hub glue blades place should right angles other 450 angle shaft Bend shaft 1/32-in wire glue prop hub Slip small glass bead over shaft insert shaft front bearing rotate little until slips rear bearing Place loop rublr motor stick prop/stab/rudder assemblage find center balance looping thread around motor stick moving fore aft until balance point found Mark spot Cut two tissue tubes /4-in length piece balsa dowel dont crush Glue motor stick front tube should 11/4 ward mark aft 2 behind first sure straight up down flat against motor stick airplane now complete best rubber motor airplane/ prop combination 10- 12-in loop 040 x 043-in FAI Rubber isnt available loop three #16 rubberbands together thats skinny kind comes wrapped around newspaper Lubricate rubber motor little Armor-All stretch out about five times its length hold minute two stretching will break rubber make possible wind few extra turns Slip wing posts tissue tubes way bottom Install rubber motor wind about 100 turns launch model should have sort powered glide rather tight flat circle no sign stall model dives raise front wing post tube stalls raise aft post correct rubber motor can best wound unhooking rear hook attach ing geared winder stretching rubber out about three times its length pack ing turns winder moved back original length motor newspaper rubberbands will take about 800 turns good contest rubber about 1500 Beamed ceilings arent good flat smooth ones let Lil Pieces gather lot cobwebs Thrill/Younger Continued paqe 75 best ways introduce boys girls modeling teach class build fly Delta Dart simple almost fool-proof novice builder can build hour can buy inexpensively large quantities Complete instructions included kit have helped teach about 30 classes can assure piece cake modeler cati classes taught can 170 Model Aviation
Edition: Model Aviation - 1983/05
Page Numbers: 72, 73, 74, 170
-u I Heres fun Indoor Rubber model isnt delicate scare anyone away no matter what kind models have built before Make stuff scrap binand some retrievals trash full-size plan presented pages 90-91E L F Randolph IF YOU ARE am RCer has nervous jitters want fly circumstances weather make trip field impossible airplane will fly inside house may answer Lil Pieces designed just purpose fills bill better antici pated materials build small model likely will found trash can scrap bin Drink can tops cardboard newspaper rubberbands trash 1/16 3/32 balsa scrap bin useful Believe economical build name model ws stolen Walt Van Gorder gave name Pieces very fine Easy B model Janu ary 1982 Model Aviation because made use parts other successful Indoor designs Lil Pieces smaller version slight changes noticeable underslung rudder seems give consistent flight path under 72 Model Aviation card-stock template cuts both top bottom rib pass razor knife Keep knife vertical eliminate beveled edges wing template Cut cardboard spars held place strips cardboard pinned building board Place no pins sparsl Note triangular notches cut template make way ribs varying amounts power LII Pieces flown living room den bedroom place 8 10 sq ft ceiling available bed room must circle ceiling fan wilt consistently fly 1 mm before hit ting wall fan chair bed etc school auditorium 18-ft ceiling will fly 3 mm looking back have never built Indoor type model please build other reason see fingers still work Construction Pick out lightest sheet 1/16 balsa reserve stocknot softest lightest Strip four 1/16 sq strips 18 long dont have stripper use metal straight edge modeling knife best strips lightweight crispness about end 36-in strip usually better other purpose have some lightweight 1/32 sheet have what need cut piece about 6 long good end 1/16 sheet sand down 1/32 lot easier sounds Tape piece 100-grit sandpaper bench put balsa sheet go sanding block sandpaper bench keeps sheet place doesnt move around Turn sheet over around sand possible sand sheet 1/100-in thickness case 1/32-in thin enough Now materials handI/16 sq spars 1/32 ribs prop blades motor stick 3/32 3/16 should piece -scrap box 3/32 sq prop can cut Make rib template shown plans file-folder-type cardboard cut piece 1/32 sheet same width template Cut eight ribs 1/32 sheet making first cut around top template move template down 1/16 making another cut Instant rib wing uses five ribs other three ribs will go stab just trim trailing edge make fit May 1983 73 easiest way apply covering glue stick adhesive Smooth tissue covering center wing covered before Just rub around edges doesnt absorb wood gluing tips place dihedral loint 1/32-in drill held modeling knife used make two holes Before bending thrust beaing shape Cut slot holes can-top aluminum thrust bearing holes inch apart end material Dont try make cut just knife slice two ways make wing stab /4 x 2-in strips cardboard will need 16 hold spars place over plan other way make template wing stab out cardboard hold spars against same cardboard strips Pins go through cardboard spars photos show template method have built quite few little air planes template can build flat surface use plans build just model card board strip method quickest Cut cardboard /4-in strips cut 2-in lengths strips Pin four strips over plans along inside leading edge between rib loca tions Put strip 1/16 sq balsa place hold four strips pinned along outside opposing four inside Hold trailing edge place same way Glue three full-size ribs between spars model airplane cement best because lightest cyanoacrylate CyA fine Trim /2 trailing edge two ribs glue tips glue has set cut through lead ing edge dihedral breaks trailing edge already separate pieces nor glue dihedral time stab rudder built same way Cut length three remaining wing ribs trailing edge form stab ribs rudder boom built piece Cut motor stick lightweight 3/32-in stock lightly sand edges thrust bearing made drilling two 1/32-in holes inch apart light alu minum sheet cutting bearing out scissors aluminum sheet top aluminum drink can Cut slit holes end bearing razor-sharp knife Dont try cut once go over slit lightly several times until goes way through Bend bearing shape shown plans photos hole slit back part bearing bent way gooseneck hook prop shaft will slide after going through front hole Glue bearing front motor stick bend glue rubber motor hook rear Bevel side boom angle shown plans glue motor stick wing held place motor stick tissue tubes glued side stick Now time make tubes Cut three four strips tissue V2 x form tubes rolling tissue over length 1/16-in music wire using white glue adhesive photo shows done quite easy Moistening edge tissue tip tongue will help start wire Make full turn tissue wire rolling wire tissue between fingers Apply small bead white glue along seam continue roll tissue wire before glue will roll between layers tissue hold place tissue rolled slip tube wire thumbnail onto piece wax paper dry practice better tubes will Use white glue aliphatic resin form tubes little hand cream smoothed wire before tube rolled will help slide off wire glue drying sand 4-in piece 1/16 sq balsa dowel Fold piece 150-grit sandpaper twirl balsa between fingers whle running out folded sandpaper balsa dowels will wing posts hold wing above motor stick will slip Continued page 170 74 Model Aviation completed bearing glued place slot rear bearing bent allow hook prop shaft curl Tissue tubes formed 1/16-in music wire roiling tissue some white glue between fingers Slide oft tube onto wax paper Round balsa dowels wing posts made twirling 1/16 sq balsa between sheets sandpaper Move balsa back forth twirled Before gluing wing mounts place find balance point motor stick complete tail prop rubber tissue tubes should placed equal distance fore aft balance point speed back up again because creased diameter Therefore propulsive efficiency down again resulting need engine power output 239 bhp very doubtful could ever get kind performance out 15 cu engine What really trying show interrelation between number blades prop amount thrust trying get constant values rpm airspeed Note chief enemy high tip speed propthe propulsive ef ficiency gets lots lower tip speeds get up around 1000 ft/sec Also evident fact weve got have clean model have hope getting high speeds power available 15 discussion will continued next column Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 71 subsejiber support contributions Picture qual ity excellent Ads planned limited materials interest Control Line smaller suppliers Computer-filed supplier lists member ship lists like will available Full-sized plans will available models published Copies technical reports etc planned future availability selected hard-to-get spe cialty supplies etc Frankly experiment see Control Line really dead way some people say dont think Write support Coalition concept refuse believe Control Line gone sample copy 37g stamp & envelope subscriptioni $15/yr Laird Jackson 2322 Wil son Ave Bristol PA 19007 Editors note subscription price persons aged 19 years older plus residents foreign countries Persons age 18 younger can subscribe $750/year Both subscription rates include 50 NCLC membership fee RMcM received copy Flying Lines excellent Northwestern newsletter published Mike Hazel 1411 Bryant Ave Cottage Grove OR 97424 particular newsletter virtually full con test results random building tips flea market items soapbox opinionated modelers Mike also periodically has rating system Northwestern Iliers rates contest performance throughout year newsletter certainly gives observation competitors doing Northwest area provides some interesting reading Racing competitors John Ballard 10102 Kimblewick Dr Louis ville KY 40223 Lii Pieces/Randolph Continued page 74 two tissue tubes airplane completed method wing mounting makes possible adjust incidence well remove wing storage Incidentally airplane another just like will fit shoe box ease Cover surfaces tissue glue stick sold stationery stores school supply sections other stores makes good adhesive tissue glue stick easy clean use doesnt wet tissue structure After covering rudder stab glue stab place above rudder boom left tip about /2 higher right seen back helps airplane circle left Cover wing center first glue tips place proper dihedral glue has set cover tips Cut two wing posts balsa dowel front longer back shown plan glue wtng /2 right center Looking front bottom forward post should slanted slightly left centeror towards right wing posts inserted tubes will cause some washin left wing leading edge higher trailing edge Cut propeller blades 1/32 sheet Drill carve piece 3/32 sq balsa shown plans form hub glue blades place should right angles other 450 angle shaft Bend shaft 1/32-in wire glue prop hub Slip small glass bead over shaft insert shaft front bearing rotate little until slips rear bearing Place loop rublr motor stick prop/stab/rudder assemblage find center balance looping thread around motor stick moving fore aft until balance point found Mark spot Cut two tissue tubes /4-in length piece balsa dowel dont crush Glue motor stick front tube should 11/4 ward mark aft 2 behind first sure straight up down flat against motor stick airplane now complete best rubber motor airplane/ prop combination 10- 12-in loop 040 x 043-in FAI Rubber isnt available loop three #16 rubberbands together thats skinny kind comes wrapped around newspaper Lubricate rubber motor little Armor-All stretch out about five times its length hold minute two stretching will break rubber make possible wind few extra turns Slip wing posts tissue tubes way bottom Install rubber motor wind about 100 turns launch model should have sort powered glide rather tight flat circle no sign stall model dives raise front wing post tube stalls raise aft post correct rubber motor can best wound unhooking rear hook attach ing geared winder stretching rubber out about three times its length pack ing turns winder moved back original length motor newspaper rubberbands will take about 800 turns good contest rubber about 1500 Beamed ceilings arent good flat smooth ones let Lil Pieces gather lot cobwebs Thrill/Younger Continued paqe 75 best ways introduce boys girls modeling teach class build fly Delta Dart simple almost fool-proof novice builder can build hour can buy inexpensively large quantities Complete instructions included kit have helped teach about 30 classes can assure piece cake modeler cati classes taught can 170 Model Aviation
Edition: Model Aviation - 1983/05
Page Numbers: 72, 73, 74, 170
-u I Heres fun Indoor Rubber model isnt delicate scare anyone away no matter what kind models have built before Make stuff scrap binand some retrievals trash full-size plan presented pages 90-91E L F Randolph IF YOU ARE am RCer has nervous jitters want fly circumstances weather make trip field impossible airplane will fly inside house may answer Lil Pieces designed just purpose fills bill better antici pated materials build small model likely will found trash can scrap bin Drink can tops cardboard newspaper rubberbands trash 1/16 3/32 balsa scrap bin useful Believe economical build name model ws stolen Walt Van Gorder gave name Pieces very fine Easy B model Janu ary 1982 Model Aviation because made use parts other successful Indoor designs Lil Pieces smaller version slight changes noticeable underslung rudder seems give consistent flight path under 72 Model Aviation card-stock template cuts both top bottom rib pass razor knife Keep knife vertical eliminate beveled edges wing template Cut cardboard spars held place strips cardboard pinned building board Place no pins sparsl Note triangular notches cut template make way ribs varying amounts power LII Pieces flown living room den bedroom place 8 10 sq ft ceiling available bed room must circle ceiling fan wilt consistently fly 1 mm before hit ting wall fan chair bed etc school auditorium 18-ft ceiling will fly 3 mm looking back have never built Indoor type model please build other reason see fingers still work Construction Pick out lightest sheet 1/16 balsa reserve stocknot softest lightest Strip four 1/16 sq strips 18 long dont have stripper use metal straight edge modeling knife best strips lightweight crispness about end 36-in strip usually better other purpose have some lightweight 1/32 sheet have what need cut piece about 6 long good end 1/16 sheet sand down 1/32 lot easier sounds Tape piece 100-grit sandpaper bench put balsa sheet go sanding block sandpaper bench keeps sheet place doesnt move around Turn sheet over around sand possible sand sheet 1/100-in thickness case 1/32-in thin enough Now materials handI/16 sq spars 1/32 ribs prop blades motor stick 3/32 3/16 should piece -scrap box 3/32 sq prop can cut Make rib template shown plans file-folder-type cardboard cut piece 1/32 sheet same width template Cut eight ribs 1/32 sheet making first cut around top template move template down 1/16 making another cut Instant rib wing uses five ribs other three ribs will go stab just trim trailing edge make fit May 1983 73 easiest way apply covering glue stick adhesive Smooth tissue covering center wing covered before Just rub around edges doesnt absorb wood gluing tips place dihedral loint 1/32-in drill held modeling knife used make two holes Before bending thrust beaing shape Cut slot holes can-top aluminum thrust bearing holes inch apart end material Dont try make cut just knife slice two ways make wing stab /4 x 2-in strips cardboard will need 16 hold spars place over plan other way make template wing stab out cardboard hold spars against same cardboard strips Pins go through cardboard spars photos show template method have built quite few little air planes template can build flat surface use plans build just model card board strip method quickest Cut cardboard /4-in strips cut 2-in lengths strips Pin four strips over plans along inside leading edge between rib loca tions Put strip 1/16 sq balsa place hold four strips pinned along outside opposing four inside Hold trailing edge place same way Glue three full-size ribs between spars model airplane cement best because lightest cyanoacrylate CyA fine Trim /2 trailing edge two ribs glue tips glue has set cut through lead ing edge dihedral breaks trailing edge already separate pieces nor glue dihedral time stab rudder built same way Cut length three remaining wing ribs trailing edge form stab ribs rudder boom built piece Cut motor stick lightweight 3/32-in stock lightly sand edges thrust bearing made drilling two 1/32-in holes inch apart light alu minum sheet cutting bearing out scissors aluminum sheet top aluminum drink can Cut slit holes end bearing razor-sharp knife Dont try cut once go over slit lightly several times until goes way through Bend bearing shape shown plans photos hole slit back part bearing bent way gooseneck hook prop shaft will slide after going through front hole Glue bearing front motor stick bend glue rubber motor hook rear Bevel side boom angle shown plans glue motor stick wing held place motor stick tissue tubes glued side stick Now time make tubes Cut three four strips tissue V2 x form tubes rolling tissue over length 1/16-in music wire using white glue adhesive photo shows done quite easy Moistening edge tissue tip tongue will help start wire Make full turn tissue wire rolling wire tissue between fingers Apply small bead white glue along seam continue roll tissue wire before glue will roll between layers tissue hold place tissue rolled slip tube wire thumbnail onto piece wax paper dry practice better tubes will Use white glue aliphatic resin form tubes little hand cream smoothed wire before tube rolled will help slide off wire glue drying sand 4-in piece 1/16 sq balsa dowel Fold piece 150-grit sandpaper twirl balsa between fingers whle running out folded sandpaper balsa dowels will wing posts hold wing above motor stick will slip Continued page 170 74 Model Aviation completed bearing glued place slot rear bearing bent allow hook prop shaft curl Tissue tubes formed 1/16-in music wire roiling tissue some white glue between fingers Slide oft tube onto wax paper Round balsa dowels wing posts made twirling 1/16 sq balsa between sheets sandpaper Move balsa back forth twirled Before gluing wing mounts place find balance point motor stick complete tail prop rubber tissue tubes should placed equal distance fore aft balance point speed back up again because creased diameter Therefore propulsive efficiency down again resulting need engine power output 239 bhp very doubtful could ever get kind performance out 15 cu engine What really trying show interrelation between number blades prop amount thrust trying get constant values rpm airspeed Note chief enemy high tip speed propthe propulsive ef ficiency gets lots lower tip speeds get up around 1000 ft/sec Also evident fact weve got have clean model have hope getting high speeds power available 15 discussion will continued next column Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 71 subsejiber support contributions Picture qual ity excellent Ads planned limited materials interest Control Line smaller suppliers Computer-filed supplier lists member ship lists like will available Full-sized plans will available models published Copies technical reports etc planned future availability selected hard-to-get spe cialty supplies etc Frankly experiment see Control Line really dead way some people say dont think Write support Coalition concept refuse believe Control Line gone sample copy 37g stamp & envelope subscriptioni $15/yr Laird Jackson 2322 Wil son Ave Bristol PA 19007 Editors note subscription price persons aged 19 years older plus residents foreign countries Persons age 18 younger can subscribe $750/year Both subscription rates include 50 NCLC membership fee RMcM received copy Flying Lines excellent Northwestern newsletter published Mike Hazel 1411 Bryant Ave Cottage Grove OR 97424 particular newsletter virtually full con test results random building tips flea market items soapbox opinionated modelers Mike also periodically has rating system Northwestern Iliers rates contest performance throughout year newsletter certainly gives observation competitors doing Northwest area provides some interesting reading Racing competitors John Ballard 10102 Kimblewick Dr Louis ville KY 40223 Lii Pieces/Randolph Continued page 74 two tissue tubes airplane completed method wing mounting makes possible adjust incidence well remove wing storage Incidentally airplane another just like will fit shoe box ease Cover surfaces tissue glue stick sold stationery stores school supply sections other stores makes good adhesive tissue glue stick easy clean use doesnt wet tissue structure After covering rudder stab glue stab place above rudder boom left tip about /2 higher right seen back helps airplane circle left Cover wing center first glue tips place proper dihedral glue has set cover tips Cut two wing posts balsa dowel front longer back shown plan glue wtng /2 right center Looking front bottom forward post should slanted slightly left centeror towards right wing posts inserted tubes will cause some washin left wing leading edge higher trailing edge Cut propeller blades 1/32 sheet Drill carve piece 3/32 sq balsa shown plans form hub glue blades place should right angles other 450 angle shaft Bend shaft 1/32-in wire glue prop hub Slip small glass bead over shaft insert shaft front bearing rotate little until slips rear bearing Place loop rublr motor stick prop/stab/rudder assemblage find center balance looping thread around motor stick moving fore aft until balance point found Mark spot Cut two tissue tubes /4-in length piece balsa dowel dont crush Glue motor stick front tube should 11/4 ward mark aft 2 behind first sure straight up down flat against motor stick airplane now complete best rubber motor airplane/ prop combination 10- 12-in loop 040 x 043-in FAI Rubber isnt available loop three #16 rubberbands together thats skinny kind comes wrapped around newspaper Lubricate rubber motor little Armor-All stretch out about five times its length hold minute two stretching will break rubber make possible wind few extra turns Slip wing posts tissue tubes way bottom Install rubber motor wind about 100 turns launch model should have sort powered glide rather tight flat circle no sign stall model dives raise front wing post tube stalls raise aft post correct rubber motor can best wound unhooking rear hook attach ing geared winder stretching rubber out about three times its length pack ing turns winder moved back original length motor newspaper rubberbands will take about 800 turns good contest rubber about 1500 Beamed ceilings arent good flat smooth ones let Lil Pieces gather lot cobwebs Thrill/Younger Continued paqe 75 best ways introduce boys girls modeling teach class build fly Delta Dart simple almost fool-proof novice builder can build hour can buy inexpensively large quantities Complete instructions included kit have helped teach about 30 classes can assure piece cake modeler cati classes taught can 170 Model Aviation