IN THIS AGE shortages natural gas gasoline course money model ers should look some modern-day materials seem almost endlessly developed supply balsa may some day exhaustedand its cost like cof fee sky high Let us experiment now new materials some day soon may have necessity Solarfilm Mylar fiberglass polysty rene along host new materials require certain amount expertise work Styrofoam has used RC brotherhood some time now excellent results rest modeling community should able likewise very easy work take time develop technique using modern material Modelers seems tend cling old ideas time-honored methods model subjects us hasnt heart beat faster has seen probably finest form modeling nice stick-andtissue job flying overhead looking trans parent showing off its intricate structure However types look really good form construction Stick tissue does justice control-line radio-control scale model modern military plane Modeling such fine hobby because different types methods construction required different varied events type should constructed tailored its particular best effect use styrofoam presents exciting possibility modeling some favo rite airplanes may have too diffi cult construct other means instance Spartan Executive its allmetal construction Pescoe Special many longerons indicated thread over styrofoam just two examples Generally metal-covered plane natural styrofoam meth od about Focke WuIf 190 modern day jet Building old meth od balsa planking just seems too tough time consuming subjects stick tissue does jus tice am old school solid carved models 1940s Therefore am nat urally prejudiced toward solid carved methods construction Some us enjoy carving balsa some consider big chore Styrofoam offers best both worlds quick Carving done sandpaper using templates indicate 38 Model Aviation Shapes tedious model conventional methods asny achieved using materials methods described text foam Wildcat allowed remain although cowl dissolved smaller Gee Bee completely dissolved shape contour sections along model Almost size fuselage can carved sanded hour Recently club Cloudbusters MAC Inc decided club project scale contest control line goal show cheaply simply control-line scale models could did have museum quality full-blown 60-80 powered scale jobs fun event demonstrating economy small size rapid building time generally en courage others try hand scale control line club promotes scale because feel thats what modeling really about decided would excellent time try out new styrofoam building tech niques thinking al ways liked little fat-bellied carrier fighter Grumman Wildcat consider Author used hypodermic needle apply gasoline foam Needle inserted shown also front cowl cockpit both wing panels Most gel residue removed cotton swab finished Gee Bee fuselage Note now wing spar projection glued rear face fuselage former proper dihedral angle sure solvent use will affect painted finish July1977 39 loam parts nrst sanded shape tnis case former used spar station two front rear cowl Balsa spar located wing Use checking templates fuselage fully monocoque shell Gee Bee achieved using layers Silkspan adhesive Bordens white glue water Knox gelatin equal parts Mixture fills well easy sand phasized compar e size dope bottles balsa knife Carpet thread simulate stringers laid up fuselage block before shell begun Landing gear struts inseri irno I1uun .ing. engage spar Expanded bead polystyrene foam used Gee Bee because dissolves thinners Polyurethane blocks classic planes always wanted build never time purchased some sheets expandedbead styrofoam K-Mart sold insulation fit between wall joists comes -in thick sizes originally pur chased bundle five sheets make odd-size boxes storing airplanes didnt know what excess seemed ideal fabricating wings components model cut out wing outlines Wild cat rough 80-100 grit sand paper block fashioned airfoil section very careful stroke sanding block direction because sanding fore aft will cause beads foam chunk out tried sand trailing edge within 1/16th finer sandpaper didnt worry too much about jagged edge because paper covering intended use would cover flaws wing styrofoam two layers newspaper added covered again mixture After overnight drying sure looked ugly surprising strength paper backed up against compression foam prevented twist whatso ever weights cured pieces now about four times heavier un covered foam Wildcat assembled using five-minute epoxy use glues dry evaporation solvent such model cement will attack foam rudder stab fabricated balsa landing gear control mechanism firewall added quite happy results working schedule does permit much time modeling paper-and-foam method exceedingly fast fillets wing rudder stab made common drywall spackle water-type paste recesses simplest way make really thin yet strong cowling other difficult-to-duplicate shape pilot can opy some color paint would never know fabricated news paper foam have used two types styrofoam Polyurethane rigid foam affected airplane glues lacquer thin ners expanded-bead type poly styrene foam will dissolve thinners has its own unique uses polyurethane blocks styrene cowls etc want remove foam cowl done weigh approximately three pounds per cubic foot makes much lighter balsa However strength leaves much desired covering material must provide structural element truly monocoque type construction re quired Right Thin cowl allows maximum room engine mount tank made Handiwipes laid over foam epoxy Cowls wheel pants complete fuselages larger models strength required can made same method using fiberglass resin put together via hand-launch glider method propping up dihedral sanding chord along edge building board fuselage made laminating enough pieces -in sheet foam held together Scotch Sprayment Adhesive width required Wildcat Using very sharp knife rough cut round tapered shape laminated block foam leaving plenty material sanded careful sanding direction frequent use tem plates fuselage took shape wings fuselage cov ered newspaper made mixture Bordens white glue water Knox gela tin gelatin acts filler fairly easy sand smooth opposed using white glue alone proportions approximately equal brushed wheels retracted also smoothed out drywall paste After sanding sprayed several coats enamel automotive primer sanding well between coats masked required sprayed final color coats used Testors enamel found drug stores After coat two wax sur faces pretty much hot-fuel-proof began look better fun part cowling get engine inside made balsa nose ring rounded block styrofoam covered Handiwipes paper-cloth towels liber ally coated brushed well Hobby Poxy Formula #2 dry cowl sanded smooth painted poured small amount dope thinner styrofoam dissolved styrofoam leaving thin 1/16th-in shell epoxy Handiwipes have used polyurethane foam replacement balsa blocks because easy work Consider using around nose block cabin area about wing fillet tail cone sure lighter todays soft balsa blocks can hollowed out very very thin weigh very little Having what consider much suc cess building Wildcat tried complicated method construction peanut-sized model famous Gee Bee Racer made almost complete ly out Silkspan discussed method hangar-talk sessions never tried method used carve out fuselage wings styrofoam block cover Silkspan dissolve out styrofoam leaving just tissue form Continued page 90 40 Model Aviation Cowling Hiperbipe made laying up paper epoxy over foam would have much difficult hollowed balsa some reports no scores should still give idea top dogs name should list isnt dont blame talk CD didnt report score particularly encouraging see Junior Senior modelers list Richard Aloise Jr Gary Dombrow ski Sr right older modelers deserve real pat back performance list five names longer Otto Graf Sr Louis Matusik Robert Dombrowski Jr also would have included scores seem out reach some dont despair lot first-place scores did make list just few second- thirdplace scores list takes excellent flight conditions well good equipment skill set record make list such pressure competition area will tend produce higher scores area competition formal event relatively new Work experience foundation upon consistent winning perform ance built Richard L Perry 5016 Angelita Ave Dayton OH 45424 RC Old-Timers/Bolton continued page 27 out Kloud King Model Aviations best selling plans asks Old-Timers publicly thank Al Hellman Chairman SAM Engine Conversion Committee dip lomatic job well done Doc feels Al did masterful job avoiding hurt feelings soapbox orations OK Dee hereby acknowledge Als efforts express thanks wonder what talking about suggest join SAM get straight dope have avoided comment controversy inside Old-Timer movement didnt want column become vehicle expressed opinions ever prolific Doctor writes has recently built 020 Cleveland Viking has Ole Reliable ready publi Ron Weiss Sam 1119 come samples model covering called BMCBest Model Covering comes various col or.. H L Blockmans Model Plans 1035 Crestview Ave Seal Beach CA 90740 has available plans 13 36-in Old-Timers 020 power So Long Well gang press business coupled eminent overseas survey trip Iran prevents continuing column Ive enjoyed See fly ing fields Jack Bolton 8007 Ferncliff Ct. Spring field VA 22153 CL Speed/Snyder continued page 35 Inn would nice Speed fliers would stay same location new ST-29X has arrived scene identical 40X same outer dimensions bolt pattern etc engine strictly full-tuned pipe version whopping 180-degree exhaust 138-degree intake sleeve timing received three measured same plus minus 0003 After care ful break-in engine performed superbly full pipe However will run mini-pipe because 180-degree exhaust timing discouraged cause Mr Maloney World Engines sured piston sleeve com binations mini-pipe version way course means engine will adaptable Jr B-Speed B-Proto mini-pipe well tuned pipe Sr/Open B-Speed free-flight application new series engines K&B Supertigre truly superb really no excuse anyone turn shabby runs powerplants like Stock out box engines capable 155 Formula 40 high 170s Jr/Sr C-Speed well B-Speed realize engine tachs 24000 rpm making 400 revolutions per second think fact manufacturers can pro duce l0-oz engine around two horsepower-plus turning 400 revs per second real feat horsepower internal stresses cannot imagined amazes engines last Considering facts should much charitable manufac turer referring rod broke shaft parted etc Last least super Speed contest year Eugene Ore gon known Northwest Regionals have classes speed including FAI Traditionally Memorial Day weekend Try Sam Snyder 1041 E Pico Fresno CA 93704 Mold It/Schobloher continued page 40 represent longeron rear portion fuselage glued carpet thread also added some strength sty rofoam dissolved out gasoline al though other aromatic liquid such lacquer thinner acetone could used Just make sure leaks wont hurt finished paint should solvent leak out onto painted surfaces carved wings fuselage foam cut apart install spar wings two bulkhead 90 Model Aviation cation Model viation product review product review product review New Cyano-Acrylate Carl Goldberg Models calls Jet Like other related miracle glues gives incredibly fast drying jointshard strong permanent will stick fingers togetherl product designed packaged avoid contamination turning brown cap leak-proof Price now $195 oz $295 oz Carl Gold berg Models Inc 4734 West Chicago Ave Chicago IL 60651 product review product review product review Americas Partial list wins 76 NATS SR 76 NATS OPEN 76 SAN VALEERS ANNUAL 76 SHOC ANNUAL 73 74 75 TULSA GLUE DOBBERS 73 EASTERN STATES CHAMP PLUS OVER 35 OTHER FIRSTSI ALSO CURRENT SR OHLG RECORD HOLDER 1206 74 NFFS MODEL OF THE YEAR PEA TURES Hand selected contest grade balsa size plans 24 page instruction book including trimming flying Screw tab trim adjustment up stab D T Full hardware pack launch glider ~NMaIYurMk U Ray Harper House Balsa 2814 East 56th Way Long Beach Ca 90805 formers fuselage should have stalled formers fuselage first could used templates sand ing shape covered foam Silkspan cause its wet strength needed try ing smooth out white glue mixture Perhaps tissue would work just well lighter model completely finished prior foam dissolving attempt joy put details such trim colors inked outlines control surfaces working against solid foam core now visions peanut plane would have holes covering weed tree contact patched hypodermic type syringe used apply gasoline deep fuselage also through some holes wings gasoline did good job dissolving foam attacking finish paint Most gel residue foam removed cotton swab foam after dissolved can removed coats inside Silkspan coating styrene too much weight can removed method careful covering foam first place plane bit heavy peanutsized airplane Silkspan saturated Knox gelatin-white glue mixture really strong tends little brittle Perhaps another filler place gela tin order method does work feel justifies building other peanuts type part country has K-Mart hardware drug store carries necessary materials urge modelers build favorite scale plane via styrofoam method control line free flight just shelf model display wont try complete model foam least make styrofoam pilot next scale job try hard duplicate exact scale model strangely forget scale pilot am sure modelers can come up better ideas methods materials can heighten interest Let mind wander ponder scheme plan would anxious hear ideas ad dress 1371 Ashover Bloomfield Hills Mich 48013 Editors Note reader directed December 1976 issue contained illustrated articleSuper Fiberglass Fuse lagesby Dan Mauch system basically similar suited Pat tern Scale RC types Vol Libre/White continued page 46 Covering The wing covered good quality Japanese tissue doped lightly moderately plasticized dope just enough seal tissue live damp climate little dope Scotchguard spray will seal moist ure Before covering wing structure doped two coats moderately thinned nitrate dope contact area tissue outside surfaces important adds much strength structure Use little dope possible covering because too much dope will warp wing After covering doping wing can straightened necessary left cure again Please observe note wash-out wing tips less wash-out plane will have stall problems fly turbulent air may have add 1/32 wash-out tip Stabilizer This constructed same wing except wood should light er soft Follow same procedure covering Rudders These very soft C-Grain sanded shape glued stab after stab covered before water shrinking Cover rudders tissue paint red some high visibility color Motor Tube made two lamina tions hard A-Grain balsa formed 1 form 4-in-wide sheet balsa Tail Boom made tapered form medium A-Grain balsa tail boom tail plane must kept light strong same time care must taken wood precision con struction No poor part fitting bad glue joints Wing Mount made mediumweight sheet balsa carved balsa blocks fillets Assemble tail boom motor tube glue wing mount place before covering Next coat motor tube two coats thick dope tail boom coat thin dope Cover motor tube glass cloth using nitrate dope Sand smooth cover heavy Silkspan Cover tail boom Japanese tissuedouble cover inch wide rear bulk head located Pour nitrate dope inside motor tube after everything dry slosh around pour out hang tail can drain overnight sure bulkhead already installed end motor tube Front End Assembly made shown plan using good steel prop hub extreme care soldering Tin parts before assembly solder ing Use good piano wire shaft hangers bearings need shielded type lubricated light oil Propeller prop precise job take time Use rock-hard balsa cut similar accurate shape similar grain structure blade present rubber situation may need make blade little narrower after com plete prop carved Keep blades thin possible because seems work best good rule follow too thick July1977 91 N
Edition: Model Aviation - 1977/07
Page Numbers: 38, 39, 40, 90, 91
IN THIS AGE shortages natural gas gasoline course money model ers should look some modern-day materials seem almost endlessly developed supply balsa may some day exhaustedand its cost like cof fee sky high Let us experiment now new materials some day soon may have necessity Solarfilm Mylar fiberglass polysty rene along host new materials require certain amount expertise work Styrofoam has used RC brotherhood some time now excellent results rest modeling community should able likewise very easy work take time develop technique using modern material Modelers seems tend cling old ideas time-honored methods model subjects us hasnt heart beat faster has seen probably finest form modeling nice stick-andtissue job flying overhead looking trans parent showing off its intricate structure However types look really good form construction Stick tissue does justice control-line radio-control scale model modern military plane Modeling such fine hobby because different types methods construction required different varied events type should constructed tailored its particular best effect use styrofoam presents exciting possibility modeling some favo rite airplanes may have too diffi cult construct other means instance Spartan Executive its allmetal construction Pescoe Special many longerons indicated thread over styrofoam just two examples Generally metal-covered plane natural styrofoam meth od about Focke WuIf 190 modern day jet Building old meth od balsa planking just seems too tough time consuming subjects stick tissue does jus tice am old school solid carved models 1940s Therefore am nat urally prejudiced toward solid carved methods construction Some us enjoy carving balsa some consider big chore Styrofoam offers best both worlds quick Carving done sandpaper using templates indicate 38 Model Aviation Shapes tedious model conventional methods asny achieved using materials methods described text foam Wildcat allowed remain although cowl dissolved smaller Gee Bee completely dissolved shape contour sections along model Almost size fuselage can carved sanded hour Recently club Cloudbusters MAC Inc decided club project scale contest control line goal show cheaply simply control-line scale models could did have museum quality full-blown 60-80 powered scale jobs fun event demonstrating economy small size rapid building time generally en courage others try hand scale control line club promotes scale because feel thats what modeling really about decided would excellent time try out new styrofoam building tech niques thinking al ways liked little fat-bellied carrier fighter Grumman Wildcat consider Author used hypodermic needle apply gasoline foam Needle inserted shown also front cowl cockpit both wing panels Most gel residue removed cotton swab finished Gee Bee fuselage Note now wing spar projection glued rear face fuselage former proper dihedral angle sure solvent use will affect painted finish July1977 39 loam parts nrst sanded shape tnis case former used spar station two front rear cowl Balsa spar located wing Use checking templates fuselage fully monocoque shell Gee Bee achieved using layers Silkspan adhesive Bordens white glue water Knox gelatin equal parts Mixture fills well easy sand phasized compar e size dope bottles balsa knife Carpet thread simulate stringers laid up fuselage block before shell begun Landing gear struts inseri irno I1uun .ing. engage spar Expanded bead polystyrene foam used Gee Bee because dissolves thinners Polyurethane blocks classic planes always wanted build never time purchased some sheets expandedbead styrofoam K-Mart sold insulation fit between wall joists comes -in thick sizes originally pur chased bundle five sheets make odd-size boxes storing airplanes didnt know what excess seemed ideal fabricating wings components model cut out wing outlines Wild cat rough 80-100 grit sand paper block fashioned airfoil section very careful stroke sanding block direction because sanding fore aft will cause beads foam chunk out tried sand trailing edge within 1/16th finer sandpaper didnt worry too much about jagged edge because paper covering intended use would cover flaws wing styrofoam two layers newspaper added covered again mixture After overnight drying sure looked ugly surprising strength paper backed up against compression foam prevented twist whatso ever weights cured pieces now about four times heavier un covered foam Wildcat assembled using five-minute epoxy use glues dry evaporation solvent such model cement will attack foam rudder stab fabricated balsa landing gear control mechanism firewall added quite happy results working schedule does permit much time modeling paper-and-foam method exceedingly fast fillets wing rudder stab made common drywall spackle water-type paste recesses simplest way make really thin yet strong cowling other difficult-to-duplicate shape pilot can opy some color paint would never know fabricated news paper foam have used two types styrofoam Polyurethane rigid foam affected airplane glues lacquer thin ners expanded-bead type poly styrene foam will dissolve thinners has its own unique uses polyurethane blocks styrene cowls etc want remove foam cowl done weigh approximately three pounds per cubic foot makes much lighter balsa However strength leaves much desired covering material must provide structural element truly monocoque type construction re quired Right Thin cowl allows maximum room engine mount tank made Handiwipes laid over foam epoxy Cowls wheel pants complete fuselages larger models strength required can made same method using fiberglass resin put together via hand-launch glider method propping up dihedral sanding chord along edge building board fuselage made laminating enough pieces -in sheet foam held together Scotch Sprayment Adhesive width required Wildcat Using very sharp knife rough cut round tapered shape laminated block foam leaving plenty material sanded careful sanding direction frequent use tem plates fuselage took shape wings fuselage cov ered newspaper made mixture Bordens white glue water Knox gela tin gelatin acts filler fairly easy sand smooth opposed using white glue alone proportions approximately equal brushed wheels retracted also smoothed out drywall paste After sanding sprayed several coats enamel automotive primer sanding well between coats masked required sprayed final color coats used Testors enamel found drug stores After coat two wax sur faces pretty much hot-fuel-proof began look better fun part cowling get engine inside made balsa nose ring rounded block styrofoam covered Handiwipes paper-cloth towels liber ally coated brushed well Hobby Poxy Formula #2 dry cowl sanded smooth painted poured small amount dope thinner styrofoam dissolved styrofoam leaving thin 1/16th-in shell epoxy Handiwipes have used polyurethane foam replacement balsa blocks because easy work Consider using around nose block cabin area about wing fillet tail cone sure lighter todays soft balsa blocks can hollowed out very very thin weigh very little Having what consider much suc cess building Wildcat tried complicated method construction peanut-sized model famous Gee Bee Racer made almost complete ly out Silkspan discussed method hangar-talk sessions never tried method used carve out fuselage wings styrofoam block cover Silkspan dissolve out styrofoam leaving just tissue form Continued page 90 40 Model Aviation Cowling Hiperbipe made laying up paper epoxy over foam would have much difficult hollowed balsa some reports no scores should still give idea top dogs name should list isnt dont blame talk CD didnt report score particularly encouraging see Junior Senior modelers list Richard Aloise Jr Gary Dombrow ski Sr right older modelers deserve real pat back performance list five names longer Otto Graf Sr Louis Matusik Robert Dombrowski Jr also would have included scores seem out reach some dont despair lot first-place scores did make list just few second- thirdplace scores list takes excellent flight conditions well good equipment skill set record make list such pressure competition area will tend produce higher scores area competition formal event relatively new Work experience foundation upon consistent winning perform ance built Richard L Perry 5016 Angelita Ave Dayton OH 45424 RC Old-Timers/Bolton continued page 27 out Kloud King Model Aviations best selling plans asks Old-Timers publicly thank Al Hellman Chairman SAM Engine Conversion Committee dip lomatic job well done Doc feels Al did masterful job avoiding hurt feelings soapbox orations OK Dee hereby acknowledge Als efforts express thanks wonder what talking about suggest join SAM get straight dope have avoided comment controversy inside Old-Timer movement didnt want column become vehicle expressed opinions ever prolific Doctor writes has recently built 020 Cleveland Viking has Ole Reliable ready publi Ron Weiss Sam 1119 come samples model covering called BMCBest Model Covering comes various col or.. H L Blockmans Model Plans 1035 Crestview Ave Seal Beach CA 90740 has available plans 13 36-in Old-Timers 020 power So Long Well gang press business coupled eminent overseas survey trip Iran prevents continuing column Ive enjoyed See fly ing fields Jack Bolton 8007 Ferncliff Ct. Spring field VA 22153 CL Speed/Snyder continued page 35 Inn would nice Speed fliers would stay same location new ST-29X has arrived scene identical 40X same outer dimensions bolt pattern etc engine strictly full-tuned pipe version whopping 180-degree exhaust 138-degree intake sleeve timing received three measured same plus minus 0003 After care ful break-in engine performed superbly full pipe However will run mini-pipe because 180-degree exhaust timing discouraged cause Mr Maloney World Engines sured piston sleeve com binations mini-pipe version way course means engine will adaptable Jr B-Speed B-Proto mini-pipe well tuned pipe Sr/Open B-Speed free-flight application new series engines K&B Supertigre truly superb really no excuse anyone turn shabby runs powerplants like Stock out box engines capable 155 Formula 40 high 170s Jr/Sr C-Speed well B-Speed realize engine tachs 24000 rpm making 400 revolutions per second think fact manufacturers can pro duce l0-oz engine around two horsepower-plus turning 400 revs per second real feat horsepower internal stresses cannot imagined amazes engines last Considering facts should much charitable manufac turer referring rod broke shaft parted etc Last least super Speed contest year Eugene Ore gon known Northwest Regionals have classes speed including FAI Traditionally Memorial Day weekend Try Sam Snyder 1041 E Pico Fresno CA 93704 Mold It/Schobloher continued page 40 represent longeron rear portion fuselage glued carpet thread also added some strength sty rofoam dissolved out gasoline al though other aromatic liquid such lacquer thinner acetone could used Just make sure leaks wont hurt finished paint should solvent leak out onto painted surfaces carved wings fuselage foam cut apart install spar wings two bulkhead 90 Model Aviation cation Model viation product review product review product review New Cyano-Acrylate Carl Goldberg Models calls Jet Like other related miracle glues gives incredibly fast drying jointshard strong permanent will stick fingers togetherl product designed packaged avoid contamination turning brown cap leak-proof Price now $195 oz $295 oz Carl Gold berg Models Inc 4734 West Chicago Ave Chicago IL 60651 product review product review product review Americas Partial list wins 76 NATS SR 76 NATS OPEN 76 SAN VALEERS ANNUAL 76 SHOC ANNUAL 73 74 75 TULSA GLUE DOBBERS 73 EASTERN STATES CHAMP PLUS OVER 35 OTHER FIRSTSI ALSO CURRENT SR OHLG RECORD HOLDER 1206 74 NFFS MODEL OF THE YEAR PEA TURES Hand selected contest grade balsa size plans 24 page instruction book including trimming flying Screw tab trim adjustment up stab D T Full hardware pack launch glider ~NMaIYurMk U Ray Harper House Balsa 2814 East 56th Way Long Beach Ca 90805 formers fuselage should have stalled formers fuselage first could used templates sand ing shape covered foam Silkspan cause its wet strength needed try ing smooth out white glue mixture Perhaps tissue would work just well lighter model completely finished prior foam dissolving attempt joy put details such trim colors inked outlines control surfaces working against solid foam core now visions peanut plane would have holes covering weed tree contact patched hypodermic type syringe used apply gasoline deep fuselage also through some holes wings gasoline did good job dissolving foam attacking finish paint Most gel residue foam removed cotton swab foam after dissolved can removed coats inside Silkspan coating styrene too much weight can removed method careful covering foam first place plane bit heavy peanutsized airplane Silkspan saturated Knox gelatin-white glue mixture really strong tends little brittle Perhaps another filler place gela tin order method does work feel justifies building other peanuts type part country has K-Mart hardware drug store carries necessary materials urge modelers build favorite scale plane via styrofoam method control line free flight just shelf model display wont try complete model foam least make styrofoam pilot next scale job try hard duplicate exact scale model strangely forget scale pilot am sure modelers can come up better ideas methods materials can heighten interest Let mind wander ponder scheme plan would anxious hear ideas ad dress 1371 Ashover Bloomfield Hills Mich 48013 Editors Note reader directed December 1976 issue contained illustrated articleSuper Fiberglass Fuse lagesby Dan Mauch system basically similar suited Pat tern Scale RC types Vol Libre/White continued page 46 Covering The wing covered good quality Japanese tissue doped lightly moderately plasticized dope just enough seal tissue live damp climate little dope Scotchguard spray will seal moist ure Before covering wing structure doped two coats moderately thinned nitrate dope contact area tissue outside surfaces important adds much strength structure Use little dope possible covering because too much dope will warp wing After covering doping wing can straightened necessary left cure again Please observe note wash-out wing tips less wash-out plane will have stall problems fly turbulent air may have add 1/32 wash-out tip Stabilizer This constructed same wing except wood should light er soft Follow same procedure covering Rudders These very soft C-Grain sanded shape glued stab after stab covered before water shrinking Cover rudders tissue paint red some high visibility color Motor Tube made two lamina tions hard A-Grain balsa formed 1 form 4-in-wide sheet balsa Tail Boom made tapered form medium A-Grain balsa tail boom tail plane must kept light strong same time care must taken wood precision con struction No poor part fitting bad glue joints Wing Mount made mediumweight sheet balsa carved balsa blocks fillets Assemble tail boom motor tube glue wing mount place before covering Next coat motor tube two coats thick dope tail boom coat thin dope Cover motor tube glass cloth using nitrate dope Sand smooth cover heavy Silkspan Cover tail boom Japanese tissuedouble cover inch wide rear bulk head located Pour nitrate dope inside motor tube after everything dry slosh around pour out hang tail can drain overnight sure bulkhead already installed end motor tube Front End Assembly made shown plan using good steel prop hub extreme care soldering Tin parts before assembly solder ing Use good piano wire shaft hangers bearings need shielded type lubricated light oil Propeller prop precise job take time Use rock-hard balsa cut similar accurate shape similar grain structure blade present rubber situation may need make blade little narrower after com plete prop carved Keep blades thin possible because seems work best good rule follow too thick July1977 91 N
Edition: Model Aviation - 1977/07
Page Numbers: 38, 39, 40, 90, 91
IN THIS AGE shortages natural gas gasoline course money model ers should look some modern-day materials seem almost endlessly developed supply balsa may some day exhaustedand its cost like cof fee sky high Let us experiment now new materials some day soon may have necessity Solarfilm Mylar fiberglass polysty rene along host new materials require certain amount expertise work Styrofoam has used RC brotherhood some time now excellent results rest modeling community should able likewise very easy work take time develop technique using modern material Modelers seems tend cling old ideas time-honored methods model subjects us hasnt heart beat faster has seen probably finest form modeling nice stick-andtissue job flying overhead looking trans parent showing off its intricate structure However types look really good form construction Stick tissue does justice control-line radio-control scale model modern military plane Modeling such fine hobby because different types methods construction required different varied events type should constructed tailored its particular best effect use styrofoam presents exciting possibility modeling some favo rite airplanes may have too diffi cult construct other means instance Spartan Executive its allmetal construction Pescoe Special many longerons indicated thread over styrofoam just two examples Generally metal-covered plane natural styrofoam meth od about Focke WuIf 190 modern day jet Building old meth od balsa planking just seems too tough time consuming subjects stick tissue does jus tice am old school solid carved models 1940s Therefore am nat urally prejudiced toward solid carved methods construction Some us enjoy carving balsa some consider big chore Styrofoam offers best both worlds quick Carving done sandpaper using templates indicate 38 Model Aviation Shapes tedious model conventional methods asny achieved using materials methods described text foam Wildcat allowed remain although cowl dissolved smaller Gee Bee completely dissolved shape contour sections along model Almost size fuselage can carved sanded hour Recently club Cloudbusters MAC Inc decided club project scale contest control line goal show cheaply simply control-line scale models could did have museum quality full-blown 60-80 powered scale jobs fun event demonstrating economy small size rapid building time generally en courage others try hand scale control line club promotes scale because feel thats what modeling really about decided would excellent time try out new styrofoam building tech niques thinking al ways liked little fat-bellied carrier fighter Grumman Wildcat consider Author used hypodermic needle apply gasoline foam Needle inserted shown also front cowl cockpit both wing panels Most gel residue removed cotton swab finished Gee Bee fuselage Note now wing spar projection glued rear face fuselage former proper dihedral angle sure solvent use will affect painted finish July1977 39 loam parts nrst sanded shape tnis case former used spar station two front rear cowl Balsa spar located wing Use checking templates fuselage fully monocoque shell Gee Bee achieved using layers Silkspan adhesive Bordens white glue water Knox gelatin equal parts Mixture fills well easy sand phasized compar e size dope bottles balsa knife Carpet thread simulate stringers laid up fuselage block before shell begun Landing gear struts inseri irno I1uun .ing. engage spar Expanded bead polystyrene foam used Gee Bee because dissolves thinners Polyurethane blocks classic planes always wanted build never time purchased some sheets expandedbead styrofoam K-Mart sold insulation fit between wall joists comes -in thick sizes originally pur chased bundle five sheets make odd-size boxes storing airplanes didnt know what excess seemed ideal fabricating wings components model cut out wing outlines Wild cat rough 80-100 grit sand paper block fashioned airfoil section very careful stroke sanding block direction because sanding fore aft will cause beads foam chunk out tried sand trailing edge within 1/16th finer sandpaper didnt worry too much about jagged edge because paper covering intended use would cover flaws wing styrofoam two layers newspaper added covered again mixture After overnight drying sure looked ugly surprising strength paper backed up against compression foam prevented twist whatso ever weights cured pieces now about four times heavier un covered foam Wildcat assembled using five-minute epoxy use glues dry evaporation solvent such model cement will attack foam rudder stab fabricated balsa landing gear control mechanism firewall added quite happy results working schedule does permit much time modeling paper-and-foam method exceedingly fast fillets wing rudder stab made common drywall spackle water-type paste recesses simplest way make really thin yet strong cowling other difficult-to-duplicate shape pilot can opy some color paint would never know fabricated news paper foam have used two types styrofoam Polyurethane rigid foam affected airplane glues lacquer thin ners expanded-bead type poly styrene foam will dissolve thinners has its own unique uses polyurethane blocks styrene cowls etc want remove foam cowl done weigh approximately three pounds per cubic foot makes much lighter balsa However strength leaves much desired covering material must provide structural element truly monocoque type construction re quired Right Thin cowl allows maximum room engine mount tank made Handiwipes laid over foam epoxy Cowls wheel pants complete fuselages larger models strength required can made same method using fiberglass resin put together via hand-launch glider method propping up dihedral sanding chord along edge building board fuselage made laminating enough pieces -in sheet foam held together Scotch Sprayment Adhesive width required Wildcat Using very sharp knife rough cut round tapered shape laminated block foam leaving plenty material sanded careful sanding direction frequent use tem plates fuselage took shape wings fuselage cov ered newspaper made mixture Bordens white glue water Knox gela tin gelatin acts filler fairly easy sand smooth opposed using white glue alone proportions approximately equal brushed wheels retracted also smoothed out drywall paste After sanding sprayed several coats enamel automotive primer sanding well between coats masked required sprayed final color coats used Testors enamel found drug stores After coat two wax sur faces pretty much hot-fuel-proof began look better fun part cowling get engine inside made balsa nose ring rounded block styrofoam covered Handiwipes paper-cloth towels liber ally coated brushed well Hobby Poxy Formula #2 dry cowl sanded smooth painted poured small amount dope thinner styrofoam dissolved styrofoam leaving thin 1/16th-in shell epoxy Handiwipes have used polyurethane foam replacement balsa blocks because easy work Consider using around nose block cabin area about wing fillet tail cone sure lighter todays soft balsa blocks can hollowed out very very thin weigh very little Having what consider much suc cess building Wildcat tried complicated method construction peanut-sized model famous Gee Bee Racer made almost complete ly out Silkspan discussed method hangar-talk sessions never tried method used carve out fuselage wings styrofoam block cover Silkspan dissolve out styrofoam leaving just tissue form Continued page 90 40 Model Aviation Cowling Hiperbipe made laying up paper epoxy over foam would have much difficult hollowed balsa some reports no scores should still give idea top dogs name should list isnt dont blame talk CD didnt report score particularly encouraging see Junior Senior modelers list Richard Aloise Jr Gary Dombrow ski Sr right older modelers deserve real pat back performance list five names longer Otto Graf Sr Louis Matusik Robert Dombrowski Jr also would have included scores seem out reach some dont despair lot first-place scores did make list just few second- thirdplace scores list takes excellent flight conditions well good equipment skill set record make list such pressure competition area will tend produce higher scores area competition formal event relatively new Work experience foundation upon consistent winning perform ance built Richard L Perry 5016 Angelita Ave Dayton OH 45424 RC Old-Timers/Bolton continued page 27 out Kloud King Model Aviations best selling plans asks Old-Timers publicly thank Al Hellman Chairman SAM Engine Conversion Committee dip lomatic job well done Doc feels Al did masterful job avoiding hurt feelings soapbox orations OK Dee hereby acknowledge Als efforts express thanks wonder what talking about suggest join SAM get straight dope have avoided comment controversy inside Old-Timer movement didnt want column become vehicle expressed opinions ever prolific Doctor writes has recently built 020 Cleveland Viking has Ole Reliable ready publi Ron Weiss Sam 1119 come samples model covering called BMCBest Model Covering comes various col or.. H L Blockmans Model Plans 1035 Crestview Ave Seal Beach CA 90740 has available plans 13 36-in Old-Timers 020 power So Long Well gang press business coupled eminent overseas survey trip Iran prevents continuing column Ive enjoyed See fly ing fields Jack Bolton 8007 Ferncliff Ct. Spring field VA 22153 CL Speed/Snyder continued page 35 Inn would nice Speed fliers would stay same location new ST-29X has arrived scene identical 40X same outer dimensions bolt pattern etc engine strictly full-tuned pipe version whopping 180-degree exhaust 138-degree intake sleeve timing received three measured same plus minus 0003 After care ful break-in engine performed superbly full pipe However will run mini-pipe because 180-degree exhaust timing discouraged cause Mr Maloney World Engines sured piston sleeve com binations mini-pipe version way course means engine will adaptable Jr B-Speed B-Proto mini-pipe well tuned pipe Sr/Open B-Speed free-flight application new series engines K&B Supertigre truly superb really no excuse anyone turn shabby runs powerplants like Stock out box engines capable 155 Formula 40 high 170s Jr/Sr C-Speed well B-Speed realize engine tachs 24000 rpm making 400 revolutions per second think fact manufacturers can pro duce l0-oz engine around two horsepower-plus turning 400 revs per second real feat horsepower internal stresses cannot imagined amazes engines last Considering facts should much charitable manufac turer referring rod broke shaft parted etc Last least super Speed contest year Eugene Ore gon known Northwest Regionals have classes speed including FAI Traditionally Memorial Day weekend Try Sam Snyder 1041 E Pico Fresno CA 93704 Mold It/Schobloher continued page 40 represent longeron rear portion fuselage glued carpet thread also added some strength sty rofoam dissolved out gasoline al though other aromatic liquid such lacquer thinner acetone could used Just make sure leaks wont hurt finished paint should solvent leak out onto painted surfaces carved wings fuselage foam cut apart install spar wings two bulkhead 90 Model Aviation cation Model viation product review product review product review New Cyano-Acrylate Carl Goldberg Models calls Jet Like other related miracle glues gives incredibly fast drying jointshard strong permanent will stick fingers togetherl product designed packaged avoid contamination turning brown cap leak-proof Price now $195 oz $295 oz Carl Gold berg Models Inc 4734 West Chicago Ave Chicago IL 60651 product review product review product review Americas Partial list wins 76 NATS SR 76 NATS OPEN 76 SAN VALEERS ANNUAL 76 SHOC ANNUAL 73 74 75 TULSA GLUE DOBBERS 73 EASTERN STATES CHAMP PLUS OVER 35 OTHER FIRSTSI ALSO CURRENT SR OHLG RECORD HOLDER 1206 74 NFFS MODEL OF THE YEAR PEA TURES Hand selected contest grade balsa size plans 24 page instruction book including trimming flying Screw tab trim adjustment up stab D T Full hardware pack launch glider ~NMaIYurMk U Ray Harper House Balsa 2814 East 56th Way Long Beach Ca 90805 formers fuselage should have stalled formers fuselage first could used templates sand ing shape covered foam Silkspan cause its wet strength needed try ing smooth out white glue mixture Perhaps tissue would work just well lighter model completely finished prior foam dissolving attempt joy put details such trim colors inked outlines control surfaces working against solid foam core now visions peanut plane would have holes covering weed tree contact patched hypodermic type syringe used apply gasoline deep fuselage also through some holes wings gasoline did good job dissolving foam attacking finish paint Most gel residue foam removed cotton swab foam after dissolved can removed coats inside Silkspan coating styrene too much weight can removed method careful covering foam first place plane bit heavy peanutsized airplane Silkspan saturated Knox gelatin-white glue mixture really strong tends little brittle Perhaps another filler place gela tin order method does work feel justifies building other peanuts type part country has K-Mart hardware drug store carries necessary materials urge modelers build favorite scale plane via styrofoam method control line free flight just shelf model display wont try complete model foam least make styrofoam pilot next scale job try hard duplicate exact scale model strangely forget scale pilot am sure modelers can come up better ideas methods materials can heighten interest Let mind wander ponder scheme plan would anxious hear ideas ad dress 1371 Ashover Bloomfield Hills Mich 48013 Editors Note reader directed December 1976 issue contained illustrated articleSuper Fiberglass Fuse lagesby Dan Mauch system basically similar suited Pat tern Scale RC types Vol Libre/White continued page 46 Covering The wing covered good quality Japanese tissue doped lightly moderately plasticized dope just enough seal tissue live damp climate little dope Scotchguard spray will seal moist ure Before covering wing structure doped two coats moderately thinned nitrate dope contact area tissue outside surfaces important adds much strength structure Use little dope possible covering because too much dope will warp wing After covering doping wing can straightened necessary left cure again Please observe note wash-out wing tips less wash-out plane will have stall problems fly turbulent air may have add 1/32 wash-out tip Stabilizer This constructed same wing except wood should light er soft Follow same procedure covering Rudders These very soft C-Grain sanded shape glued stab after stab covered before water shrinking Cover rudders tissue paint red some high visibility color Motor Tube made two lamina tions hard A-Grain balsa formed 1 form 4-in-wide sheet balsa Tail Boom made tapered form medium A-Grain balsa tail boom tail plane must kept light strong same time care must taken wood precision con struction No poor part fitting bad glue joints Wing Mount made mediumweight sheet balsa carved balsa blocks fillets Assemble tail boom motor tube glue wing mount place before covering Next coat motor tube two coats thick dope tail boom coat thin dope Cover motor tube glass cloth using nitrate dope Sand smooth cover heavy Silkspan Cover tail boom Japanese tissuedouble cover inch wide rear bulk head located Pour nitrate dope inside motor tube after everything dry slosh around pour out hang tail can drain overnight sure bulkhead already installed end motor tube Front End Assembly made shown plan using good steel prop hub extreme care soldering Tin parts before assembly solder ing Use good piano wire shaft hangers bearings need shielded type lubricated light oil Propeller prop precise job take time Use rock-hard balsa cut similar accurate shape similar grain structure blade present rubber situation may need make blade little narrower after com plete prop carved Keep blades thin possible because seems work best good rule follow too thick July1977 91 N
Edition: Model Aviation - 1977/07
Page Numbers: 38, 39, 40, 90, 91
IN THIS AGE shortages natural gas gasoline course money model ers should look some modern-day materials seem almost endlessly developed supply balsa may some day exhaustedand its cost like cof fee sky high Let us experiment now new materials some day soon may have necessity Solarfilm Mylar fiberglass polysty rene along host new materials require certain amount expertise work Styrofoam has used RC brotherhood some time now excellent results rest modeling community should able likewise very easy work take time develop technique using modern material Modelers seems tend cling old ideas time-honored methods model subjects us hasnt heart beat faster has seen probably finest form modeling nice stick-andtissue job flying overhead looking trans parent showing off its intricate structure However types look really good form construction Stick tissue does justice control-line radio-control scale model modern military plane Modeling such fine hobby because different types methods construction required different varied events type should constructed tailored its particular best effect use styrofoam presents exciting possibility modeling some favo rite airplanes may have too diffi cult construct other means instance Spartan Executive its allmetal construction Pescoe Special many longerons indicated thread over styrofoam just two examples Generally metal-covered plane natural styrofoam meth od about Focke WuIf 190 modern day jet Building old meth od balsa planking just seems too tough time consuming subjects stick tissue does jus tice am old school solid carved models 1940s Therefore am nat urally prejudiced toward solid carved methods construction Some us enjoy carving balsa some consider big chore Styrofoam offers best both worlds quick Carving done sandpaper using templates indicate 38 Model Aviation Shapes tedious model conventional methods asny achieved using materials methods described text foam Wildcat allowed remain although cowl dissolved smaller Gee Bee completely dissolved shape contour sections along model Almost size fuselage can carved sanded hour Recently club Cloudbusters MAC Inc decided club project scale contest control line goal show cheaply simply control-line scale models could did have museum quality full-blown 60-80 powered scale jobs fun event demonstrating economy small size rapid building time generally en courage others try hand scale control line club promotes scale because feel thats what modeling really about decided would excellent time try out new styrofoam building tech niques thinking al ways liked little fat-bellied carrier fighter Grumman Wildcat consider Author used hypodermic needle apply gasoline foam Needle inserted shown also front cowl cockpit both wing panels Most gel residue removed cotton swab finished Gee Bee fuselage Note now wing spar projection glued rear face fuselage former proper dihedral angle sure solvent use will affect painted finish July1977 39 loam parts nrst sanded shape tnis case former used spar station two front rear cowl Balsa spar located wing Use checking templates fuselage fully monocoque shell Gee Bee achieved using layers Silkspan adhesive Bordens white glue water Knox gelatin equal parts Mixture fills well easy sand phasized compar e size dope bottles balsa knife Carpet thread simulate stringers laid up fuselage block before shell begun Landing gear struts inseri irno I1uun .ing. engage spar Expanded bead polystyrene foam used Gee Bee because dissolves thinners Polyurethane blocks classic planes always wanted build never time purchased some sheets expandedbead styrofoam K-Mart sold insulation fit between wall joists comes -in thick sizes originally pur chased bundle five sheets make odd-size boxes storing airplanes didnt know what excess seemed ideal fabricating wings components model cut out wing outlines Wild cat rough 80-100 grit sand paper block fashioned airfoil section very careful stroke sanding block direction because sanding fore aft will cause beads foam chunk out tried sand trailing edge within 1/16th finer sandpaper didnt worry too much about jagged edge because paper covering intended use would cover flaws wing styrofoam two layers newspaper added covered again mixture After overnight drying sure looked ugly surprising strength paper backed up against compression foam prevented twist whatso ever weights cured pieces now about four times heavier un covered foam Wildcat assembled using five-minute epoxy use glues dry evaporation solvent such model cement will attack foam rudder stab fabricated balsa landing gear control mechanism firewall added quite happy results working schedule does permit much time modeling paper-and-foam method exceedingly fast fillets wing rudder stab made common drywall spackle water-type paste recesses simplest way make really thin yet strong cowling other difficult-to-duplicate shape pilot can opy some color paint would never know fabricated news paper foam have used two types styrofoam Polyurethane rigid foam affected airplane glues lacquer thin ners expanded-bead type poly styrene foam will dissolve thinners has its own unique uses polyurethane blocks styrene cowls etc want remove foam cowl done weigh approximately three pounds per cubic foot makes much lighter balsa However strength leaves much desired covering material must provide structural element truly monocoque type construction re quired Right Thin cowl allows maximum room engine mount tank made Handiwipes laid over foam epoxy Cowls wheel pants complete fuselages larger models strength required can made same method using fiberglass resin put together via hand-launch glider method propping up dihedral sanding chord along edge building board fuselage made laminating enough pieces -in sheet foam held together Scotch Sprayment Adhesive width required Wildcat Using very sharp knife rough cut round tapered shape laminated block foam leaving plenty material sanded careful sanding direction frequent use tem plates fuselage took shape wings fuselage cov ered newspaper made mixture Bordens white glue water Knox gela tin gelatin acts filler fairly easy sand smooth opposed using white glue alone proportions approximately equal brushed wheels retracted also smoothed out drywall paste After sanding sprayed several coats enamel automotive primer sanding well between coats masked required sprayed final color coats used Testors enamel found drug stores After coat two wax sur faces pretty much hot-fuel-proof began look better fun part cowling get engine inside made balsa nose ring rounded block styrofoam covered Handiwipes paper-cloth towels liber ally coated brushed well Hobby Poxy Formula #2 dry cowl sanded smooth painted poured small amount dope thinner styrofoam dissolved styrofoam leaving thin 1/16th-in shell epoxy Handiwipes have used polyurethane foam replacement balsa blocks because easy work Consider using around nose block cabin area about wing fillet tail cone sure lighter todays soft balsa blocks can hollowed out very very thin weigh very little Having what consider much suc cess building Wildcat tried complicated method construction peanut-sized model famous Gee Bee Racer made almost complete ly out Silkspan discussed method hangar-talk sessions never tried method used carve out fuselage wings styrofoam block cover Silkspan dissolve out styrofoam leaving just tissue form Continued page 90 40 Model Aviation Cowling Hiperbipe made laying up paper epoxy over foam would have much difficult hollowed balsa some reports no scores should still give idea top dogs name should list isnt dont blame talk CD didnt report score particularly encouraging see Junior Senior modelers list Richard Aloise Jr Gary Dombrow ski Sr right older modelers deserve real pat back performance list five names longer Otto Graf Sr Louis Matusik Robert Dombrowski Jr also would have included scores seem out reach some dont despair lot first-place scores did make list just few second- thirdplace scores list takes excellent flight conditions well good equipment skill set record make list such pressure competition area will tend produce higher scores area competition formal event relatively new Work experience foundation upon consistent winning perform ance built Richard L Perry 5016 Angelita Ave Dayton OH 45424 RC Old-Timers/Bolton continued page 27 out Kloud King Model Aviations best selling plans asks Old-Timers publicly thank Al Hellman Chairman SAM Engine Conversion Committee dip lomatic job well done Doc feels Al did masterful job avoiding hurt feelings soapbox orations OK Dee hereby acknowledge Als efforts express thanks wonder what talking about suggest join SAM get straight dope have avoided comment controversy inside Old-Timer movement didnt want column become vehicle expressed opinions ever prolific Doctor writes has recently built 020 Cleveland Viking has Ole Reliable ready publi Ron Weiss Sam 1119 come samples model covering called BMCBest Model Covering comes various col or.. H L Blockmans Model Plans 1035 Crestview Ave Seal Beach CA 90740 has available plans 13 36-in Old-Timers 020 power So Long Well gang press business coupled eminent overseas survey trip Iran prevents continuing column Ive enjoyed See fly ing fields Jack Bolton 8007 Ferncliff Ct. Spring field VA 22153 CL Speed/Snyder continued page 35 Inn would nice Speed fliers would stay same location new ST-29X has arrived scene identical 40X same outer dimensions bolt pattern etc engine strictly full-tuned pipe version whopping 180-degree exhaust 138-degree intake sleeve timing received three measured same plus minus 0003 After care ful break-in engine performed superbly full pipe However will run mini-pipe because 180-degree exhaust timing discouraged cause Mr Maloney World Engines sured piston sleeve com binations mini-pipe version way course means engine will adaptable Jr B-Speed B-Proto mini-pipe well tuned pipe Sr/Open B-Speed free-flight application new series engines K&B Supertigre truly superb really no excuse anyone turn shabby runs powerplants like Stock out box engines capable 155 Formula 40 high 170s Jr/Sr C-Speed well B-Speed realize engine tachs 24000 rpm making 400 revolutions per second think fact manufacturers can pro duce l0-oz engine around two horsepower-plus turning 400 revs per second real feat horsepower internal stresses cannot imagined amazes engines last Considering facts should much charitable manufac turer referring rod broke shaft parted etc Last least super Speed contest year Eugene Ore gon known Northwest Regionals have classes speed including FAI Traditionally Memorial Day weekend Try Sam Snyder 1041 E Pico Fresno CA 93704 Mold It/Schobloher continued page 40 represent longeron rear portion fuselage glued carpet thread also added some strength sty rofoam dissolved out gasoline al though other aromatic liquid such lacquer thinner acetone could used Just make sure leaks wont hurt finished paint should solvent leak out onto painted surfaces carved wings fuselage foam cut apart install spar wings two bulkhead 90 Model Aviation cation Model viation product review product review product review New Cyano-Acrylate Carl Goldberg Models calls Jet Like other related miracle glues gives incredibly fast drying jointshard strong permanent will stick fingers togetherl product designed packaged avoid contamination turning brown cap leak-proof Price now $195 oz $295 oz Carl Gold berg Models Inc 4734 West Chicago Ave Chicago IL 60651 product review product review product review Americas Partial list wins 76 NATS SR 76 NATS OPEN 76 SAN VALEERS ANNUAL 76 SHOC ANNUAL 73 74 75 TULSA GLUE DOBBERS 73 EASTERN STATES CHAMP PLUS OVER 35 OTHER FIRSTSI ALSO CURRENT SR OHLG RECORD HOLDER 1206 74 NFFS MODEL OF THE YEAR PEA TURES Hand selected contest grade balsa size plans 24 page instruction book including trimming flying Screw tab trim adjustment up stab D T Full hardware pack launch glider ~NMaIYurMk U Ray Harper House Balsa 2814 East 56th Way Long Beach Ca 90805 formers fuselage should have stalled formers fuselage first could used templates sand ing shape covered foam Silkspan cause its wet strength needed try ing smooth out white glue mixture Perhaps tissue would work just well lighter model completely finished prior foam dissolving attempt joy put details such trim colors inked outlines control surfaces working against solid foam core now visions peanut plane would have holes covering weed tree contact patched hypodermic type syringe used apply gasoline deep fuselage also through some holes wings gasoline did good job dissolving foam attacking finish paint Most gel residue foam removed cotton swab foam after dissolved can removed coats inside Silkspan coating styrene too much weight can removed method careful covering foam first place plane bit heavy peanutsized airplane Silkspan saturated Knox gelatin-white glue mixture really strong tends little brittle Perhaps another filler place gela tin order method does work feel justifies building other peanuts type part country has K-Mart hardware drug store carries necessary materials urge modelers build favorite scale plane via styrofoam method control line free flight just shelf model display wont try complete model foam least make styrofoam pilot next scale job try hard duplicate exact scale model strangely forget scale pilot am sure modelers can come up better ideas methods materials can heighten interest Let mind wander ponder scheme plan would anxious hear ideas ad dress 1371 Ashover Bloomfield Hills Mich 48013 Editors Note reader directed December 1976 issue contained illustrated articleSuper Fiberglass Fuse lagesby Dan Mauch system basically similar suited Pat tern Scale RC types Vol Libre/White continued page 46 Covering The wing covered good quality Japanese tissue doped lightly moderately plasticized dope just enough seal tissue live damp climate little dope Scotchguard spray will seal moist ure Before covering wing structure doped two coats moderately thinned nitrate dope contact area tissue outside surfaces important adds much strength structure Use little dope possible covering because too much dope will warp wing After covering doping wing can straightened necessary left cure again Please observe note wash-out wing tips less wash-out plane will have stall problems fly turbulent air may have add 1/32 wash-out tip Stabilizer This constructed same wing except wood should light er soft Follow same procedure covering Rudders These very soft C-Grain sanded shape glued stab after stab covered before water shrinking Cover rudders tissue paint red some high visibility color Motor Tube made two lamina tions hard A-Grain balsa formed 1 form 4-in-wide sheet balsa Tail Boom made tapered form medium A-Grain balsa tail boom tail plane must kept light strong same time care must taken wood precision con struction No poor part fitting bad glue joints Wing Mount made mediumweight sheet balsa carved balsa blocks fillets Assemble tail boom motor tube glue wing mount place before covering Next coat motor tube two coats thick dope tail boom coat thin dope Cover motor tube glass cloth using nitrate dope Sand smooth cover heavy Silkspan Cover tail boom Japanese tissuedouble cover inch wide rear bulk head located Pour nitrate dope inside motor tube after everything dry slosh around pour out hang tail can drain overnight sure bulkhead already installed end motor tube Front End Assembly made shown plan using good steel prop hub extreme care soldering Tin parts before assembly solder ing Use good piano wire shaft hangers bearings need shielded type lubricated light oil Propeller prop precise job take time Use rock-hard balsa cut similar accurate shape similar grain structure blade present rubber situation may need make blade little narrower after com plete prop carved Keep blades thin possible because seems work best good rule follow too thick July1977 91 N
Edition: Model Aviation - 1977/07
Page Numbers: 38, 39, 40, 90, 91
IN THIS AGE shortages natural gas gasoline course money model ers should look some modern-day materials seem almost endlessly developed supply balsa may some day exhaustedand its cost like cof fee sky high Let us experiment now new materials some day soon may have necessity Solarfilm Mylar fiberglass polysty rene along host new materials require certain amount expertise work Styrofoam has used RC brotherhood some time now excellent results rest modeling community should able likewise very easy work take time develop technique using modern material Modelers seems tend cling old ideas time-honored methods model subjects us hasnt heart beat faster has seen probably finest form modeling nice stick-andtissue job flying overhead looking trans parent showing off its intricate structure However types look really good form construction Stick tissue does justice control-line radio-control scale model modern military plane Modeling such fine hobby because different types methods construction required different varied events type should constructed tailored its particular best effect use styrofoam presents exciting possibility modeling some favo rite airplanes may have too diffi cult construct other means instance Spartan Executive its allmetal construction Pescoe Special many longerons indicated thread over styrofoam just two examples Generally metal-covered plane natural styrofoam meth od about Focke WuIf 190 modern day jet Building old meth od balsa planking just seems too tough time consuming subjects stick tissue does jus tice am old school solid carved models 1940s Therefore am nat urally prejudiced toward solid carved methods construction Some us enjoy carving balsa some consider big chore Styrofoam offers best both worlds quick Carving done sandpaper using templates indicate 38 Model Aviation Shapes tedious model conventional methods asny achieved using materials methods described text foam Wildcat allowed remain although cowl dissolved smaller Gee Bee completely dissolved shape contour sections along model Almost size fuselage can carved sanded hour Recently club Cloudbusters MAC Inc decided club project scale contest control line goal show cheaply simply control-line scale models could did have museum quality full-blown 60-80 powered scale jobs fun event demonstrating economy small size rapid building time generally en courage others try hand scale control line club promotes scale because feel thats what modeling really about decided would excellent time try out new styrofoam building tech niques thinking al ways liked little fat-bellied carrier fighter Grumman Wildcat consider Author used hypodermic needle apply gasoline foam Needle inserted shown also front cowl cockpit both wing panels Most gel residue removed cotton swab finished Gee Bee fuselage Note now wing spar projection glued rear face fuselage former proper dihedral angle sure solvent use will affect painted finish July1977 39 loam parts nrst sanded shape tnis case former used spar station two front rear cowl Balsa spar located wing Use checking templates fuselage fully monocoque shell Gee Bee achieved using layers Silkspan adhesive Bordens white glue water Knox gelatin equal parts Mixture fills well easy sand phasized compar e size dope bottles balsa knife Carpet thread simulate stringers laid up fuselage block before shell begun Landing gear struts inseri irno I1uun .ing. engage spar Expanded bead polystyrene foam used Gee Bee because dissolves thinners Polyurethane blocks classic planes always wanted build never time purchased some sheets expandedbead styrofoam K-Mart sold insulation fit between wall joists comes -in thick sizes originally pur chased bundle five sheets make odd-size boxes storing airplanes didnt know what excess seemed ideal fabricating wings components model cut out wing outlines Wild cat rough 80-100 grit sand paper block fashioned airfoil section very careful stroke sanding block direction because sanding fore aft will cause beads foam chunk out tried sand trailing edge within 1/16th finer sandpaper didnt worry too much about jagged edge because paper covering intended use would cover flaws wing styrofoam two layers newspaper added covered again mixture After overnight drying sure looked ugly surprising strength paper backed up against compression foam prevented twist whatso ever weights cured pieces now about four times heavier un covered foam Wildcat assembled using five-minute epoxy use glues dry evaporation solvent such model cement will attack foam rudder stab fabricated balsa landing gear control mechanism firewall added quite happy results working schedule does permit much time modeling paper-and-foam method exceedingly fast fillets wing rudder stab made common drywall spackle water-type paste recesses simplest way make really thin yet strong cowling other difficult-to-duplicate shape pilot can opy some color paint would never know fabricated news paper foam have used two types styrofoam Polyurethane rigid foam affected airplane glues lacquer thin ners expanded-bead type poly styrene foam will dissolve thinners has its own unique uses polyurethane blocks styrene cowls etc want remove foam cowl done weigh approximately three pounds per cubic foot makes much lighter balsa However strength leaves much desired covering material must provide structural element truly monocoque type construction re quired Right Thin cowl allows maximum room engine mount tank made Handiwipes laid over foam epoxy Cowls wheel pants complete fuselages larger models strength required can made same method using fiberglass resin put together via hand-launch glider method propping up dihedral sanding chord along edge building board fuselage made laminating enough pieces -in sheet foam held together Scotch Sprayment Adhesive width required Wildcat Using very sharp knife rough cut round tapered shape laminated block foam leaving plenty material sanded careful sanding direction frequent use tem plates fuselage took shape wings fuselage cov ered newspaper made mixture Bordens white glue water Knox gela tin gelatin acts filler fairly easy sand smooth opposed using white glue alone proportions approximately equal brushed wheels retracted also smoothed out drywall paste After sanding sprayed several coats enamel automotive primer sanding well between coats masked required sprayed final color coats used Testors enamel found drug stores After coat two wax sur faces pretty much hot-fuel-proof began look better fun part cowling get engine inside made balsa nose ring rounded block styrofoam covered Handiwipes paper-cloth towels liber ally coated brushed well Hobby Poxy Formula #2 dry cowl sanded smooth painted poured small amount dope thinner styrofoam dissolved styrofoam leaving thin 1/16th-in shell epoxy Handiwipes have used polyurethane foam replacement balsa blocks because easy work Consider using around nose block cabin area about wing fillet tail cone sure lighter todays soft balsa blocks can hollowed out very very thin weigh very little Having what consider much suc cess building Wildcat tried complicated method construction peanut-sized model famous Gee Bee Racer made almost complete ly out Silkspan discussed method hangar-talk sessions never tried method used carve out fuselage wings styrofoam block cover Silkspan dissolve out styrofoam leaving just tissue form Continued page 90 40 Model Aviation Cowling Hiperbipe made laying up paper epoxy over foam would have much difficult hollowed balsa some reports no scores should still give idea top dogs name should list isnt dont blame talk CD didnt report score particularly encouraging see Junior Senior modelers list Richard Aloise Jr Gary Dombrow ski Sr right older modelers deserve real pat back performance list five names longer Otto Graf Sr Louis Matusik Robert Dombrowski Jr also would have included scores seem out reach some dont despair lot first-place scores did make list just few second- thirdplace scores list takes excellent flight conditions well good equipment skill set record make list such pressure competition area will tend produce higher scores area competition formal event relatively new Work experience foundation upon consistent winning perform ance built Richard L Perry 5016 Angelita Ave Dayton OH 45424 RC Old-Timers/Bolton continued page 27 out Kloud King Model Aviations best selling plans asks Old-Timers publicly thank Al Hellman Chairman SAM Engine Conversion Committee dip lomatic job well done Doc feels Al did masterful job avoiding hurt feelings soapbox orations OK Dee hereby acknowledge Als efforts express thanks wonder what talking about suggest join SAM get straight dope have avoided comment controversy inside Old-Timer movement didnt want column become vehicle expressed opinions ever prolific Doctor writes has recently built 020 Cleveland Viking has Ole Reliable ready publi Ron Weiss Sam 1119 come samples model covering called BMCBest Model Covering comes various col or.. H L Blockmans Model Plans 1035 Crestview Ave Seal Beach CA 90740 has available plans 13 36-in Old-Timers 020 power So Long Well gang press business coupled eminent overseas survey trip Iran prevents continuing column Ive enjoyed See fly ing fields Jack Bolton 8007 Ferncliff Ct. Spring field VA 22153 CL Speed/Snyder continued page 35 Inn would nice Speed fliers would stay same location new ST-29X has arrived scene identical 40X same outer dimensions bolt pattern etc engine strictly full-tuned pipe version whopping 180-degree exhaust 138-degree intake sleeve timing received three measured same plus minus 0003 After care ful break-in engine performed superbly full pipe However will run mini-pipe because 180-degree exhaust timing discouraged cause Mr Maloney World Engines sured piston sleeve com binations mini-pipe version way course means engine will adaptable Jr B-Speed B-Proto mini-pipe well tuned pipe Sr/Open B-Speed free-flight application new series engines K&B Supertigre truly superb really no excuse anyone turn shabby runs powerplants like Stock out box engines capable 155 Formula 40 high 170s Jr/Sr C-Speed well B-Speed realize engine tachs 24000 rpm making 400 revolutions per second think fact manufacturers can pro duce l0-oz engine around two horsepower-plus turning 400 revs per second real feat horsepower internal stresses cannot imagined amazes engines last Considering facts should much charitable manufac turer referring rod broke shaft parted etc Last least super Speed contest year Eugene Ore gon known Northwest Regionals have classes speed including FAI Traditionally Memorial Day weekend Try Sam Snyder 1041 E Pico Fresno CA 93704 Mold It/Schobloher continued page 40 represent longeron rear portion fuselage glued carpet thread also added some strength sty rofoam dissolved out gasoline al though other aromatic liquid such lacquer thinner acetone could used Just make sure leaks wont hurt finished paint should solvent leak out onto painted surfaces carved wings fuselage foam cut apart install spar wings two bulkhead 90 Model Aviation cation Model viation product review product review product review New Cyano-Acrylate Carl Goldberg Models calls Jet Like other related miracle glues gives incredibly fast drying jointshard strong permanent will stick fingers togetherl product designed packaged avoid contamination turning brown cap leak-proof Price now $195 oz $295 oz Carl Gold berg Models Inc 4734 West Chicago Ave Chicago IL 60651 product review product review product review Americas Partial list wins 76 NATS SR 76 NATS OPEN 76 SAN VALEERS ANNUAL 76 SHOC ANNUAL 73 74 75 TULSA GLUE DOBBERS 73 EASTERN STATES CHAMP PLUS OVER 35 OTHER FIRSTSI ALSO CURRENT SR OHLG RECORD HOLDER 1206 74 NFFS MODEL OF THE YEAR PEA TURES Hand selected contest grade balsa size plans 24 page instruction book including trimming flying Screw tab trim adjustment up stab D T Full hardware pack launch glider ~NMaIYurMk U Ray Harper House Balsa 2814 East 56th Way Long Beach Ca 90805 formers fuselage should have stalled formers fuselage first could used templates sand ing shape covered foam Silkspan cause its wet strength needed try ing smooth out white glue mixture Perhaps tissue would work just well lighter model completely finished prior foam dissolving attempt joy put details such trim colors inked outlines control surfaces working against solid foam core now visions peanut plane would have holes covering weed tree contact patched hypodermic type syringe used apply gasoline deep fuselage also through some holes wings gasoline did good job dissolving foam attacking finish paint Most gel residue foam removed cotton swab foam after dissolved can removed coats inside Silkspan coating styrene too much weight can removed method careful covering foam first place plane bit heavy peanutsized airplane Silkspan saturated Knox gelatin-white glue mixture really strong tends little brittle Perhaps another filler place gela tin order method does work feel justifies building other peanuts type part country has K-Mart hardware drug store carries necessary materials urge modelers build favorite scale plane via styrofoam method control line free flight just shelf model display wont try complete model foam least make styrofoam pilot next scale job try hard duplicate exact scale model strangely forget scale pilot am sure modelers can come up better ideas methods materials can heighten interest Let mind wander ponder scheme plan would anxious hear ideas ad dress 1371 Ashover Bloomfield Hills Mich 48013 Editors Note reader directed December 1976 issue contained illustrated articleSuper Fiberglass Fuse lagesby Dan Mauch system basically similar suited Pat tern Scale RC types Vol Libre/White continued page 46 Covering The wing covered good quality Japanese tissue doped lightly moderately plasticized dope just enough seal tissue live damp climate little dope Scotchguard spray will seal moist ure Before covering wing structure doped two coats moderately thinned nitrate dope contact area tissue outside surfaces important adds much strength structure Use little dope possible covering because too much dope will warp wing After covering doping wing can straightened necessary left cure again Please observe note wash-out wing tips less wash-out plane will have stall problems fly turbulent air may have add 1/32 wash-out tip Stabilizer This constructed same wing except wood should light er soft Follow same procedure covering Rudders These very soft C-Grain sanded shape glued stab after stab covered before water shrinking Cover rudders tissue paint red some high visibility color Motor Tube made two lamina tions hard A-Grain balsa formed 1 form 4-in-wide sheet balsa Tail Boom made tapered form medium A-Grain balsa tail boom tail plane must kept light strong same time care must taken wood precision con struction No poor part fitting bad glue joints Wing Mount made mediumweight sheet balsa carved balsa blocks fillets Assemble tail boom motor tube glue wing mount place before covering Next coat motor tube two coats thick dope tail boom coat thin dope Cover motor tube glass cloth using nitrate dope Sand smooth cover heavy Silkspan Cover tail boom Japanese tissuedouble cover inch wide rear bulk head located Pour nitrate dope inside motor tube after everything dry slosh around pour out hang tail can drain overnight sure bulkhead already installed end motor tube Front End Assembly made shown plan using good steel prop hub extreme care soldering Tin parts before assembly solder ing Use good piano wire shaft hangers bearings need shielded type lubricated light oil Propeller prop precise job take time Use rock-hard balsa cut similar accurate shape similar grain structure blade present rubber situation may need make blade little narrower after com plete prop carved Keep blades thin possible because seems work best good rule follow too thick July1977 91 N