1980 NATS Unofficial Events writing isnt certain will Nats let alone will Terry Rimert has planning already started Terry NFFS Unofficial Events Director 1979 did bang-up job rather thankless job reminds thanks Terry figured learned enough experience could better job 1980 planning such events has bit chaotic past somewhat understandably AMA has regarded whole affair thorn side things have looking up despite proliferation such activities tends multiply chaos requires coordination department becomes difficult ignore event except Hand-Launch Glider 14 Gas enjoyed greatest partici pation Nats event despite its unofficial stigma several years running Im talking about Aeronuts/NFFS-sponsored Pennyplane event before itbecame anofficial AMA event participation isnt governing criterion three guys/gals show up event cant get way anything else much problem administration down proportionally too seems appropriate attitude Hedonistic its fun Isnt what supposed \about 13tACF4J C14 21 OUTDOOI2 HAND LAUNCH LIDCI2 LAJ2I2Y SAENT 1st 79 Nats ls$ 79 Sout-twcsr I2e8ionaLs ZndTQ L5FreeFIit Ckamp5 79 TuLci Qlue Dobixr Tropktj IO jiraj vz 3 z1 r-1 II -- 0 40 Model Aviation Sugar spice thats what HI Gliders made hare mighty sweet Blackjack Good nameit scares 21 nose -3j 4 4 5 fLat f[at 4 neat DT-fuse installation picture left parts shown right assembly left Typical installation shown pic right Bob says can make UD bunch little time takes make iuss Marnie Bobs aranddauohter chaos becomes unnecessarily intensified some club announces some six weeks before Nats going sponsor some event Chances knew going sponsor some months calendar just sort slipped away announced time event conflicted another unofficial event several official ones also turns out another club planning sponsor save event No kidding happens Part Terrys goal have competitions official AMA events official Nats menu addition course will some traditional unofficial events such Embryo Endurance RubberPower Speed wonder AMA will get around following its own rule about being improper have events official AMA events official Nats menu digress thats going Nats seems conflict inevitable minimize requires coordination thats what Terry trying takes effort also time So squid effect part Terrys Early Warning System Anyone wishing willing sponsor Nats unofficial event should contact him soon possible no kidding address 367 Orange Ave Baldwin Florida 32234 wonder should mention Terry Milpitas Twang-Hook Tweekers thinking about sponsoring unofficial event R 0 W electric-power canard-biplane-ornithopters Oh well theres plenty time Look Ma No Ribs Did waste youth naught whittling ribs could have wasted something far important such gluing stick stick B Hm waste no time solution hand present first time anywhere entire universe Meuser Un-Patented Ribless Con struction Technique Now youre awed half death lets get dont consider chunk 1/16-sq proper rib stretch imagination insofar outdoor free-flight technology con cerned indoor-type sliced rib also ranks pretty close ground zero totem pole sophistication So term ribless seems ap propriate Now believe fancy tables airfoil-section coordinates really mean whole lot relation free-flight model aviation going have little problem what follows After have plotted few dozen airfoil sections built few hundred wings might dawn you real sharp covering between ribs does whatever wants regardless ofwhatthe ribs either side tell solution carefully constructed sheet-balsa covered surfaces both windtunnel tests half-century competition experience have shown such slick airfoils really arent great Multi-spar construction will beat suede-shoe slick-surface lads field battle super-slick sheeted surfaces usually benefit being crummied up turbulators bottom surfacedetermines kind stick required replace rib bottom flat use square stock preferably rectangular stock edge bottom undercambered use indoor-style sliced ribs After size shape non-ribs has determined spars simply sit top non-ribs determine shape top surface simple straight wing stab standard-size strips will usually adequate two spars wing stab tapered might find necessary strip spars sheet stock Center sections tips dihedral breaks present minor problem easily solved tips simply scab piece oversize sheet stock after glue has set trim sand shape center sections dihedral breaks fill between spars sheet-balsa scraps Let stick up above desired level trim sand proper height afterwards Neat DT Some FFers like put DT fuses aft end model some like closer home closer CG wont bore prejudiced list pros cons suggest try both ways decide Now have decided forwardmounted fuse read photos show set-up has paid off dozen models Make up half-dozen crack installation onto model takes about minute parts shown right side first photo Punch hole bit 1/64 plywoodor 1/32 think can stand additional 01 grams using paper punch Cut off piece -OD aluminum tubing about half inch long rolling under knife blade course two -in lengths 9/32-in OD tubing Short lengths tubing tend skoonch out shape knife-cut helps stick piece dowel smaller tubing inside cutting worse straighten out pushing over centerpunch other tapered object Bend glass-headed pin shape shown go out buy glass-headed pins local department store dont settle plasticContinued page 122 February 1980 41 Dontlook nowbutthe bustle back forguys aswell gals isa nanaywalst-packsurvlval kltTrom JImurocket llepllcastnatnolastne miscellany wont fit pockets Handy says Bob Appeals ye Ed tooreal marvey pipes tobaccol Survival Kit guess could call rump pack belly pack depending whether facing north south put great carrying odds ends camera binoculars liquid refreshments compass DT fuse extra rubber bands perhaps spare pastrami sandwich snake-bite kit etc Stuff would like have close hand too bulky fit pockets Flip around front get stuff out flip behind will out way rye using decades got ski shoppe years ago Shops specializing rockclimbing back-packing sometimes have too now market designed especially vo0 does enclose required cubic footage addition soft light-weight insulated pouch precisely fits pair cans Gatorade beverage choice fabric coated inside something like vinyl same sort stuff used make finest back-pack bags zipper husky plastic-toothed affair sort has proved relatively grit-proof Web tabs sewn pack near ends zipper make easier zip unzip quickattach/release buckle apparently made injec tion-molded fiberglass-reinforced Nylon simi lar light tough material does its job selfassured manner introductory price $1995 plus $200 shipping plus 6% tax live Califomia source Jim Crocket Replicas 1442 N Fruit Ave. Fresno CA 93728 Tell him Bob sent you. Bob Meuser 4200 Gregory Sr. Oak/a na C4 946 19 Fial/ Daily continued page 57 cowling removable noseblock fit Make round noseblock mediums sheet add engine crankcase also made two thicknesses s sheet front block Add 7 Williams Brothers 34-scale cylin ders cut half lengthwise noseblock Fashion key backside block Carve front radius cowling very carefully Fashion gun troughs wet 1/32 soft balsa slip slots cut top cowling Sand until smooth Fill grain several applications talcum powder dope sand well Carve block very soft balsa fabricate sheet balsa fairing fit between wing root fuselage leading edge Fashion oil cooler scoop medium-weight balsa scoop functions very effective belly skid build Fiat gear up Add tailwheel proper location re tractable Add dashboard windshield structure Wings The inboard sections dealt fuselage section outboard wing sections built separately later attached rib B First laminate wing-tips three thicknesses 1/32 x 3/32 balsa Laminate leading edge two pieces hard t/16 sheet 85 inches long 5/16 deep Taper leading edge 5/16 xs atRibA tos sq atthelastoutboard rib trailing edge laminated two pieces 1/16 s sanded triangular section Assemble wings laying down tips leading edge trailing edge duplicate Rib Glue together add tapered main spar Rib tothe wingtip Now add upper lower wing ribs indicated locations sure use hard balsa wing ribs Slice ribs according patterns upper lower ribs hand fit location Add 1 / 16-sq upright brace front behind main spar rib help keep large lightweight ribs collapsing stressed wing completed glue Rib inboard wing sections very careful line up wings same incidence angles dihedral angles used l4 inch dihedral tip Tailplanes Construction rudder eleva tor surfaces straightforward hinged surfaces wire thereby making necessary use double spars structure However did cut laminated outlines tips helps keep hinged surfaces stiff still allows plenty movement adjustments Sand tail surfaces symmetrical section before attaching pin joints fuselage use pin joints pins embedded structure attachment points fuselage because event crash structure will break loose easily little no damage fuselage structure Covering Finishing covered Fiat light-weight Japanese tissue Before actually begin covering model sure scallop fuselage formers between stringers Dremel piece fine sandpaper wrapped around 4-in dowel eliminates former bumps will make much attractive covering job used thinned Elmers glue 1 3 parts water attach tissue wings tail surfaces should probably covered before final assembly fuselage covered long strips tissue spanning distance between two parallel stringers 124 Model Aviation REALISMSCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL CONTROL-LI NE FREE-FLIGHT J1LUA SCALE PILOTS E WHEELS CYLINDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND 5Ot FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 ILLA 19216 Calvert Street Reseda CA 9 time consuming way it sure looks best Add balsa gun fairings water shrink entire covered plane like shrink wing washout rather build used about Vi inch washout wing tip Dope plane two coats thinned dope preferably nitrate have added appropriate amount plasticizer cowl section mentioned before covered filled several coats dope talcum powder followed sanding Take time because cowl must look like metal rather grainy balsa really want niftylooking Fiat After clear doping select favorite Fiat color scheme chose sand spinph effect yellow cowling light grey undersurfaces used Floquil Model Railroad paints thinned very thin nitrate dope sprayed airbrush After adding colors details such panel lines can added soft grey pencil fixed coat clear nitrate sprayed Fiat built gear up simulated gear doors wheels bond paper glued place rubber cement numbers cut either black red tissue doped Next add pilot carved foam machine guns made balsa aluminum tube stack Trimming Flying used 9-in PeckPolymers plastic prop large Peck-Polymers bearing 50 down thrust finished weight Fiat rubber about 70 grams slightly over 2 oz about 95 grams rubber used 4 strands 2 loops FAI 3/16 rubber total length rubber about 15-17 feet Tie rubber good knot lube Dow 33 Sig Rubber Lube proceed braid motor having buddy hold knotted end motor put about 17 winder turns 161 winder Now grab knotted end buddy still holding onto other end place both ends over index finger Pull out now 4-stranded motor several times until looks nicely braided Install motor plane test glide over tall grass glide reasonable try few winds launch plane slightly nose down everything still OK try about 30 winder turns Fiat flies large left circle left glide properly trimmed will fly slightly nose-up attitude glide very well braided motor fly fun about 100 winder turns 1600 total turns get 45 seconds duration go broke 130-plus turnsexcept cant get turns 161 winder motor too strong plane flew 153 beat Mike Midkiffs super Hellcat FAC Nats needed use 51 winder get over 2000 total turns Good luck yours Now Ithink Ill try Bill Winters Grumman bipes Editor old timer thinks Curtiss SOC-3 biplane has potential bipealso MAN gosh knows Manito Hutchinson continued page 45 quickly short useful lifetime Use about three coats nitrate dope clear epoxy final coat Give couple extra coats front portion stab since exhaust residue seems collect Fuselage Use metal straightedge cut Out sides add nose tail doublers Draw top view out piece 3/32 sheet dont cut out yet Pin bottom building board glue formers Hot Stuff works well fuselage construction Add sides check ing carefully alignment Sand fuselage assembly add top Build pylon gluing pylon core bottom ribs Add formers checking core truly vertical Add tip ribs sand cover 1/20 sheet fin built same way no central core needed Cut out two sides outline shown glue fin ribs side Hot Stuff Sand no rib edges stick out glue other side recommend epoxy finish like Hobbypoxy fuselage High-nitro fuels will destroy other finish very short time Cover fuselage tissue using nitrate dope better epoxy adhesion Apply couple coats nitrate lacquer sanding sealer two coats colored epoxy add additional coat epoxy front end Wet sand first coat #400 wet-or-dry sandpaper final coat #600 Rub out Dupont white polishFlying Dont too much hurry get out flying field Assemble model check thoroughly proper balance correct warps CG should shown plans balances tail-heavy move engine forward inserting additional plywood spacers between firewall engine mount engine should point straight ahead slightly left Hand glide model sure theres no stalling diving tendency Correct shimming front back stab pieces thin ply should definite glide circle right Run engine few times familiarize yourself pacifier fuel system make sure engine cutoff works first flight try 5-second run prop backwards engine running full bore probably wont tell much should get rid first flight jitters model does anything climb straight out shallow angle may have problems sharp turn may mean have misaligned rudder bent fuselage steep climb stage means have too much incidence now flights will made full power prop proper direction Reason hot free-flight pattern depends being trimmed certain speed various adjustments make deli cately balanced work against other properly maximum climb speed try work way up gradually power 11 find yourself undoing low speed adjust ments go along So bite bullet try full-power test fight about 3-second engine run model should climb straight Out steep angle Adjust thrust offset correct turning tendencies right launch Remove incidence model shows looping tendency short run has shallow climb angle nose begins tuck under add incidence shimming rear stab get going straight out no looping tendencies 3-second run increase engine run 2-second increments model tends go left longer engine runs add right rudder tab Use pieces 1/16 x balsa cut trailing edge section glued February 1980 125 ing compound Assemble complete model move pylon until ship balances indicated very slightly forward epoxy place
Edition: Model Aviation - 1980/02
Page Numbers: 40, 41, 124, 125
1980 NATS Unofficial Events writing isnt certain will Nats let alone will Terry Rimert has planning already started Terry NFFS Unofficial Events Director 1979 did bang-up job rather thankless job reminds thanks Terry figured learned enough experience could better job 1980 planning such events has bit chaotic past somewhat understandably AMA has regarded whole affair thorn side things have looking up despite proliferation such activities tends multiply chaos requires coordination department becomes difficult ignore event except Hand-Launch Glider 14 Gas enjoyed greatest partici pation Nats event despite its unofficial stigma several years running Im talking about Aeronuts/NFFS-sponsored Pennyplane event before itbecame anofficial AMA event participation isnt governing criterion three guys/gals show up event cant get way anything else much problem administration down proportionally too seems appropriate attitude Hedonistic its fun Isnt what supposed \about 13tACF4J C14 21 OUTDOOI2 HAND LAUNCH LIDCI2 LAJ2I2Y SAENT 1st 79 Nats ls$ 79 Sout-twcsr I2e8ionaLs ZndTQ L5FreeFIit Ckamp5 79 TuLci Qlue Dobixr Tropktj IO jiraj vz 3 z1 r-1 II -- 0 40 Model Aviation Sugar spice thats what HI Gliders made hare mighty sweet Blackjack Good nameit scares 21 nose -3j 4 4 5 fLat f[at 4 neat DT-fuse installation picture left parts shown right assembly left Typical installation shown pic right Bob says can make UD bunch little time takes make iuss Marnie Bobs aranddauohter chaos becomes unnecessarily intensified some club announces some six weeks before Nats going sponsor some event Chances knew going sponsor some months calendar just sort slipped away announced time event conflicted another unofficial event several official ones also turns out another club planning sponsor save event No kidding happens Part Terrys goal have competitions official AMA events official Nats menu addition course will some traditional unofficial events such Embryo Endurance RubberPower Speed wonder AMA will get around following its own rule about being improper have events official AMA events official Nats menu digress thats going Nats seems conflict inevitable minimize requires coordination thats what Terry trying takes effort also time So squid effect part Terrys Early Warning System Anyone wishing willing sponsor Nats unofficial event should contact him soon possible no kidding address 367 Orange Ave Baldwin Florida 32234 wonder should mention Terry Milpitas Twang-Hook Tweekers thinking about sponsoring unofficial event R 0 W electric-power canard-biplane-ornithopters Oh well theres plenty time Look Ma No Ribs Did waste youth naught whittling ribs could have wasted something far important such gluing stick stick B Hm waste no time solution hand present first time anywhere entire universe Meuser Un-Patented Ribless Con struction Technique Now youre awed half death lets get dont consider chunk 1/16-sq proper rib stretch imagination insofar outdoor free-flight technology con cerned indoor-type sliced rib also ranks pretty close ground zero totem pole sophistication So term ribless seems ap propriate Now believe fancy tables airfoil-section coordinates really mean whole lot relation free-flight model aviation going have little problem what follows After have plotted few dozen airfoil sections built few hundred wings might dawn you real sharp covering between ribs does whatever wants regardless ofwhatthe ribs either side tell solution carefully constructed sheet-balsa covered surfaces both windtunnel tests half-century competition experience have shown such slick airfoils really arent great Multi-spar construction will beat suede-shoe slick-surface lads field battle super-slick sheeted surfaces usually benefit being crummied up turbulators bottom surfacedetermines kind stick required replace rib bottom flat use square stock preferably rectangular stock edge bottom undercambered use indoor-style sliced ribs After size shape non-ribs has determined spars simply sit top non-ribs determine shape top surface simple straight wing stab standard-size strips will usually adequate two spars wing stab tapered might find necessary strip spars sheet stock Center sections tips dihedral breaks present minor problem easily solved tips simply scab piece oversize sheet stock after glue has set trim sand shape center sections dihedral breaks fill between spars sheet-balsa scraps Let stick up above desired level trim sand proper height afterwards Neat DT Some FFers like put DT fuses aft end model some like closer home closer CG wont bore prejudiced list pros cons suggest try both ways decide Now have decided forwardmounted fuse read photos show set-up has paid off dozen models Make up half-dozen crack installation onto model takes about minute parts shown right side first photo Punch hole bit 1/64 plywoodor 1/32 think can stand additional 01 grams using paper punch Cut off piece -OD aluminum tubing about half inch long rolling under knife blade course two -in lengths 9/32-in OD tubing Short lengths tubing tend skoonch out shape knife-cut helps stick piece dowel smaller tubing inside cutting worse straighten out pushing over centerpunch other tapered object Bend glass-headed pin shape shown go out buy glass-headed pins local department store dont settle plasticContinued page 122 February 1980 41 Dontlook nowbutthe bustle back forguys aswell gals isa nanaywalst-packsurvlval kltTrom JImurocket llepllcastnatnolastne miscellany wont fit pockets Handy says Bob Appeals ye Ed tooreal marvey pipes tobaccol Survival Kit guess could call rump pack belly pack depending whether facing north south put great carrying odds ends camera binoculars liquid refreshments compass DT fuse extra rubber bands perhaps spare pastrami sandwich snake-bite kit etc Stuff would like have close hand too bulky fit pockets Flip around front get stuff out flip behind will out way rye using decades got ski shoppe years ago Shops specializing rockclimbing back-packing sometimes have too now market designed especially vo0 does enclose required cubic footage addition soft light-weight insulated pouch precisely fits pair cans Gatorade beverage choice fabric coated inside something like vinyl same sort stuff used make finest back-pack bags zipper husky plastic-toothed affair sort has proved relatively grit-proof Web tabs sewn pack near ends zipper make easier zip unzip quickattach/release buckle apparently made injec tion-molded fiberglass-reinforced Nylon simi lar light tough material does its job selfassured manner introductory price $1995 plus $200 shipping plus 6% tax live Califomia source Jim Crocket Replicas 1442 N Fruit Ave. Fresno CA 93728 Tell him Bob sent you. Bob Meuser 4200 Gregory Sr. Oak/a na C4 946 19 Fial/ Daily continued page 57 cowling removable noseblock fit Make round noseblock mediums sheet add engine crankcase also made two thicknesses s sheet front block Add 7 Williams Brothers 34-scale cylin ders cut half lengthwise noseblock Fashion key backside block Carve front radius cowling very carefully Fashion gun troughs wet 1/32 soft balsa slip slots cut top cowling Sand until smooth Fill grain several applications talcum powder dope sand well Carve block very soft balsa fabricate sheet balsa fairing fit between wing root fuselage leading edge Fashion oil cooler scoop medium-weight balsa scoop functions very effective belly skid build Fiat gear up Add tailwheel proper location re tractable Add dashboard windshield structure Wings The inboard sections dealt fuselage section outboard wing sections built separately later attached rib B First laminate wing-tips three thicknesses 1/32 x 3/32 balsa Laminate leading edge two pieces hard t/16 sheet 85 inches long 5/16 deep Taper leading edge 5/16 xs atRibA tos sq atthelastoutboard rib trailing edge laminated two pieces 1/16 s sanded triangular section Assemble wings laying down tips leading edge trailing edge duplicate Rib Glue together add tapered main spar Rib tothe wingtip Now add upper lower wing ribs indicated locations sure use hard balsa wing ribs Slice ribs according patterns upper lower ribs hand fit location Add 1 / 16-sq upright brace front behind main spar rib help keep large lightweight ribs collapsing stressed wing completed glue Rib inboard wing sections very careful line up wings same incidence angles dihedral angles used l4 inch dihedral tip Tailplanes Construction rudder eleva tor surfaces straightforward hinged surfaces wire thereby making necessary use double spars structure However did cut laminated outlines tips helps keep hinged surfaces stiff still allows plenty movement adjustments Sand tail surfaces symmetrical section before attaching pin joints fuselage use pin joints pins embedded structure attachment points fuselage because event crash structure will break loose easily little no damage fuselage structure Covering Finishing covered Fiat light-weight Japanese tissue Before actually begin covering model sure scallop fuselage formers between stringers Dremel piece fine sandpaper wrapped around 4-in dowel eliminates former bumps will make much attractive covering job used thinned Elmers glue 1 3 parts water attach tissue wings tail surfaces should probably covered before final assembly fuselage covered long strips tissue spanning distance between two parallel stringers 124 Model Aviation REALISMSCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL CONTROL-LI NE FREE-FLIGHT J1LUA SCALE PILOTS E WHEELS CYLINDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND 5Ot FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 ILLA 19216 Calvert Street Reseda CA 9 time consuming way it sure looks best Add balsa gun fairings water shrink entire covered plane like shrink wing washout rather build used about Vi inch washout wing tip Dope plane two coats thinned dope preferably nitrate have added appropriate amount plasticizer cowl section mentioned before covered filled several coats dope talcum powder followed sanding Take time because cowl must look like metal rather grainy balsa really want niftylooking Fiat After clear doping select favorite Fiat color scheme chose sand spinph effect yellow cowling light grey undersurfaces used Floquil Model Railroad paints thinned very thin nitrate dope sprayed airbrush After adding colors details such panel lines can added soft grey pencil fixed coat clear nitrate sprayed Fiat built gear up simulated gear doors wheels bond paper glued place rubber cement numbers cut either black red tissue doped Next add pilot carved foam machine guns made balsa aluminum tube stack Trimming Flying used 9-in PeckPolymers plastic prop large Peck-Polymers bearing 50 down thrust finished weight Fiat rubber about 70 grams slightly over 2 oz about 95 grams rubber used 4 strands 2 loops FAI 3/16 rubber total length rubber about 15-17 feet Tie rubber good knot lube Dow 33 Sig Rubber Lube proceed braid motor having buddy hold knotted end motor put about 17 winder turns 161 winder Now grab knotted end buddy still holding onto other end place both ends over index finger Pull out now 4-stranded motor several times until looks nicely braided Install motor plane test glide over tall grass glide reasonable try few winds launch plane slightly nose down everything still OK try about 30 winder turns Fiat flies large left circle left glide properly trimmed will fly slightly nose-up attitude glide very well braided motor fly fun about 100 winder turns 1600 total turns get 45 seconds duration go broke 130-plus turnsexcept cant get turns 161 winder motor too strong plane flew 153 beat Mike Midkiffs super Hellcat FAC Nats needed use 51 winder get over 2000 total turns Good luck yours Now Ithink Ill try Bill Winters Grumman bipes Editor old timer thinks Curtiss SOC-3 biplane has potential bipealso MAN gosh knows Manito Hutchinson continued page 45 quickly short useful lifetime Use about three coats nitrate dope clear epoxy final coat Give couple extra coats front portion stab since exhaust residue seems collect Fuselage Use metal straightedge cut Out sides add nose tail doublers Draw top view out piece 3/32 sheet dont cut out yet Pin bottom building board glue formers Hot Stuff works well fuselage construction Add sides check ing carefully alignment Sand fuselage assembly add top Build pylon gluing pylon core bottom ribs Add formers checking core truly vertical Add tip ribs sand cover 1/20 sheet fin built same way no central core needed Cut out two sides outline shown glue fin ribs side Hot Stuff Sand no rib edges stick out glue other side recommend epoxy finish like Hobbypoxy fuselage High-nitro fuels will destroy other finish very short time Cover fuselage tissue using nitrate dope better epoxy adhesion Apply couple coats nitrate lacquer sanding sealer two coats colored epoxy add additional coat epoxy front end Wet sand first coat #400 wet-or-dry sandpaper final coat #600 Rub out Dupont white polishFlying Dont too much hurry get out flying field Assemble model check thoroughly proper balance correct warps CG should shown plans balances tail-heavy move engine forward inserting additional plywood spacers between firewall engine mount engine should point straight ahead slightly left Hand glide model sure theres no stalling diving tendency Correct shimming front back stab pieces thin ply should definite glide circle right Run engine few times familiarize yourself pacifier fuel system make sure engine cutoff works first flight try 5-second run prop backwards engine running full bore probably wont tell much should get rid first flight jitters model does anything climb straight out shallow angle may have problems sharp turn may mean have misaligned rudder bent fuselage steep climb stage means have too much incidence now flights will made full power prop proper direction Reason hot free-flight pattern depends being trimmed certain speed various adjustments make deli cately balanced work against other properly maximum climb speed try work way up gradually power 11 find yourself undoing low speed adjust ments go along So bite bullet try full-power test fight about 3-second engine run model should climb straight Out steep angle Adjust thrust offset correct turning tendencies right launch Remove incidence model shows looping tendency short run has shallow climb angle nose begins tuck under add incidence shimming rear stab get going straight out no looping tendencies 3-second run increase engine run 2-second increments model tends go left longer engine runs add right rudder tab Use pieces 1/16 x balsa cut trailing edge section glued February 1980 125 ing compound Assemble complete model move pylon until ship balances indicated very slightly forward epoxy place
Edition: Model Aviation - 1980/02
Page Numbers: 40, 41, 124, 125
1980 NATS Unofficial Events writing isnt certain will Nats let alone will Terry Rimert has planning already started Terry NFFS Unofficial Events Director 1979 did bang-up job rather thankless job reminds thanks Terry figured learned enough experience could better job 1980 planning such events has bit chaotic past somewhat understandably AMA has regarded whole affair thorn side things have looking up despite proliferation such activities tends multiply chaos requires coordination department becomes difficult ignore event except Hand-Launch Glider 14 Gas enjoyed greatest partici pation Nats event despite its unofficial stigma several years running Im talking about Aeronuts/NFFS-sponsored Pennyplane event before itbecame anofficial AMA event participation isnt governing criterion three guys/gals show up event cant get way anything else much problem administration down proportionally too seems appropriate attitude Hedonistic its fun Isnt what supposed \about 13tACF4J C14 21 OUTDOOI2 HAND LAUNCH LIDCI2 LAJ2I2Y SAENT 1st 79 Nats ls$ 79 Sout-twcsr I2e8ionaLs ZndTQ L5FreeFIit Ckamp5 79 TuLci Qlue Dobixr Tropktj IO jiraj vz 3 z1 r-1 II -- 0 40 Model Aviation Sugar spice thats what HI Gliders made hare mighty sweet Blackjack Good nameit scares 21 nose -3j 4 4 5 fLat f[at 4 neat DT-fuse installation picture left parts shown right assembly left Typical installation shown pic right Bob says can make UD bunch little time takes make iuss Marnie Bobs aranddauohter chaos becomes unnecessarily intensified some club announces some six weeks before Nats going sponsor some event Chances knew going sponsor some months calendar just sort slipped away announced time event conflicted another unofficial event several official ones also turns out another club planning sponsor save event No kidding happens Part Terrys goal have competitions official AMA events official Nats menu addition course will some traditional unofficial events such Embryo Endurance RubberPower Speed wonder AMA will get around following its own rule about being improper have events official AMA events official Nats menu digress thats going Nats seems conflict inevitable minimize requires coordination thats what Terry trying takes effort also time So squid effect part Terrys Early Warning System Anyone wishing willing sponsor Nats unofficial event should contact him soon possible no kidding address 367 Orange Ave Baldwin Florida 32234 wonder should mention Terry Milpitas Twang-Hook Tweekers thinking about sponsoring unofficial event R 0 W electric-power canard-biplane-ornithopters Oh well theres plenty time Look Ma No Ribs Did waste youth naught whittling ribs could have wasted something far important such gluing stick stick B Hm waste no time solution hand present first time anywhere entire universe Meuser Un-Patented Ribless Con struction Technique Now youre awed half death lets get dont consider chunk 1/16-sq proper rib stretch imagination insofar outdoor free-flight technology con cerned indoor-type sliced rib also ranks pretty close ground zero totem pole sophistication So term ribless seems ap propriate Now believe fancy tables airfoil-section coordinates really mean whole lot relation free-flight model aviation going have little problem what follows After have plotted few dozen airfoil sections built few hundred wings might dawn you real sharp covering between ribs does whatever wants regardless ofwhatthe ribs either side tell solution carefully constructed sheet-balsa covered surfaces both windtunnel tests half-century competition experience have shown such slick airfoils really arent great Multi-spar construction will beat suede-shoe slick-surface lads field battle super-slick sheeted surfaces usually benefit being crummied up turbulators bottom surfacedetermines kind stick required replace rib bottom flat use square stock preferably rectangular stock edge bottom undercambered use indoor-style sliced ribs After size shape non-ribs has determined spars simply sit top non-ribs determine shape top surface simple straight wing stab standard-size strips will usually adequate two spars wing stab tapered might find necessary strip spars sheet stock Center sections tips dihedral breaks present minor problem easily solved tips simply scab piece oversize sheet stock after glue has set trim sand shape center sections dihedral breaks fill between spars sheet-balsa scraps Let stick up above desired level trim sand proper height afterwards Neat DT Some FFers like put DT fuses aft end model some like closer home closer CG wont bore prejudiced list pros cons suggest try both ways decide Now have decided forwardmounted fuse read photos show set-up has paid off dozen models Make up half-dozen crack installation onto model takes about minute parts shown right side first photo Punch hole bit 1/64 plywoodor 1/32 think can stand additional 01 grams using paper punch Cut off piece -OD aluminum tubing about half inch long rolling under knife blade course two -in lengths 9/32-in OD tubing Short lengths tubing tend skoonch out shape knife-cut helps stick piece dowel smaller tubing inside cutting worse straighten out pushing over centerpunch other tapered object Bend glass-headed pin shape shown go out buy glass-headed pins local department store dont settle plasticContinued page 122 February 1980 41 Dontlook nowbutthe bustle back forguys aswell gals isa nanaywalst-packsurvlval kltTrom JImurocket llepllcastnatnolastne miscellany wont fit pockets Handy says Bob Appeals ye Ed tooreal marvey pipes tobaccol Survival Kit guess could call rump pack belly pack depending whether facing north south put great carrying odds ends camera binoculars liquid refreshments compass DT fuse extra rubber bands perhaps spare pastrami sandwich snake-bite kit etc Stuff would like have close hand too bulky fit pockets Flip around front get stuff out flip behind will out way rye using decades got ski shoppe years ago Shops specializing rockclimbing back-packing sometimes have too now market designed especially vo0 does enclose required cubic footage addition soft light-weight insulated pouch precisely fits pair cans Gatorade beverage choice fabric coated inside something like vinyl same sort stuff used make finest back-pack bags zipper husky plastic-toothed affair sort has proved relatively grit-proof Web tabs sewn pack near ends zipper make easier zip unzip quickattach/release buckle apparently made injec tion-molded fiberglass-reinforced Nylon simi lar light tough material does its job selfassured manner introductory price $1995 plus $200 shipping plus 6% tax live Califomia source Jim Crocket Replicas 1442 N Fruit Ave. Fresno CA 93728 Tell him Bob sent you. Bob Meuser 4200 Gregory Sr. Oak/a na C4 946 19 Fial/ Daily continued page 57 cowling removable noseblock fit Make round noseblock mediums sheet add engine crankcase also made two thicknesses s sheet front block Add 7 Williams Brothers 34-scale cylin ders cut half lengthwise noseblock Fashion key backside block Carve front radius cowling very carefully Fashion gun troughs wet 1/32 soft balsa slip slots cut top cowling Sand until smooth Fill grain several applications talcum powder dope sand well Carve block very soft balsa fabricate sheet balsa fairing fit between wing root fuselage leading edge Fashion oil cooler scoop medium-weight balsa scoop functions very effective belly skid build Fiat gear up Add tailwheel proper location re tractable Add dashboard windshield structure Wings The inboard sections dealt fuselage section outboard wing sections built separately later attached rib B First laminate wing-tips three thicknesses 1/32 x 3/32 balsa Laminate leading edge two pieces hard t/16 sheet 85 inches long 5/16 deep Taper leading edge 5/16 xs atRibA tos sq atthelastoutboard rib trailing edge laminated two pieces 1/16 s sanded triangular section Assemble wings laying down tips leading edge trailing edge duplicate Rib Glue together add tapered main spar Rib tothe wingtip Now add upper lower wing ribs indicated locations sure use hard balsa wing ribs Slice ribs according patterns upper lower ribs hand fit location Add 1 / 16-sq upright brace front behind main spar rib help keep large lightweight ribs collapsing stressed wing completed glue Rib inboard wing sections very careful line up wings same incidence angles dihedral angles used l4 inch dihedral tip Tailplanes Construction rudder eleva tor surfaces straightforward hinged surfaces wire thereby making necessary use double spars structure However did cut laminated outlines tips helps keep hinged surfaces stiff still allows plenty movement adjustments Sand tail surfaces symmetrical section before attaching pin joints fuselage use pin joints pins embedded structure attachment points fuselage because event crash structure will break loose easily little no damage fuselage structure Covering Finishing covered Fiat light-weight Japanese tissue Before actually begin covering model sure scallop fuselage formers between stringers Dremel piece fine sandpaper wrapped around 4-in dowel eliminates former bumps will make much attractive covering job used thinned Elmers glue 1 3 parts water attach tissue wings tail surfaces should probably covered before final assembly fuselage covered long strips tissue spanning distance between two parallel stringers 124 Model Aviation REALISMSCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL CONTROL-LI NE FREE-FLIGHT J1LUA SCALE PILOTS E WHEELS CYLINDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND 5Ot FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 ILLA 19216 Calvert Street Reseda CA 9 time consuming way it sure looks best Add balsa gun fairings water shrink entire covered plane like shrink wing washout rather build used about Vi inch washout wing tip Dope plane two coats thinned dope preferably nitrate have added appropriate amount plasticizer cowl section mentioned before covered filled several coats dope talcum powder followed sanding Take time because cowl must look like metal rather grainy balsa really want niftylooking Fiat After clear doping select favorite Fiat color scheme chose sand spinph effect yellow cowling light grey undersurfaces used Floquil Model Railroad paints thinned very thin nitrate dope sprayed airbrush After adding colors details such panel lines can added soft grey pencil fixed coat clear nitrate sprayed Fiat built gear up simulated gear doors wheels bond paper glued place rubber cement numbers cut either black red tissue doped Next add pilot carved foam machine guns made balsa aluminum tube stack Trimming Flying used 9-in PeckPolymers plastic prop large Peck-Polymers bearing 50 down thrust finished weight Fiat rubber about 70 grams slightly over 2 oz about 95 grams rubber used 4 strands 2 loops FAI 3/16 rubber total length rubber about 15-17 feet Tie rubber good knot lube Dow 33 Sig Rubber Lube proceed braid motor having buddy hold knotted end motor put about 17 winder turns 161 winder Now grab knotted end buddy still holding onto other end place both ends over index finger Pull out now 4-stranded motor several times until looks nicely braided Install motor plane test glide over tall grass glide reasonable try few winds launch plane slightly nose down everything still OK try about 30 winder turns Fiat flies large left circle left glide properly trimmed will fly slightly nose-up attitude glide very well braided motor fly fun about 100 winder turns 1600 total turns get 45 seconds duration go broke 130-plus turnsexcept cant get turns 161 winder motor too strong plane flew 153 beat Mike Midkiffs super Hellcat FAC Nats needed use 51 winder get over 2000 total turns Good luck yours Now Ithink Ill try Bill Winters Grumman bipes Editor old timer thinks Curtiss SOC-3 biplane has potential bipealso MAN gosh knows Manito Hutchinson continued page 45 quickly short useful lifetime Use about three coats nitrate dope clear epoxy final coat Give couple extra coats front portion stab since exhaust residue seems collect Fuselage Use metal straightedge cut Out sides add nose tail doublers Draw top view out piece 3/32 sheet dont cut out yet Pin bottom building board glue formers Hot Stuff works well fuselage construction Add sides check ing carefully alignment Sand fuselage assembly add top Build pylon gluing pylon core bottom ribs Add formers checking core truly vertical Add tip ribs sand cover 1/20 sheet fin built same way no central core needed Cut out two sides outline shown glue fin ribs side Hot Stuff Sand no rib edges stick out glue other side recommend epoxy finish like Hobbypoxy fuselage High-nitro fuels will destroy other finish very short time Cover fuselage tissue using nitrate dope better epoxy adhesion Apply couple coats nitrate lacquer sanding sealer two coats colored epoxy add additional coat epoxy front end Wet sand first coat #400 wet-or-dry sandpaper final coat #600 Rub out Dupont white polishFlying Dont too much hurry get out flying field Assemble model check thoroughly proper balance correct warps CG should shown plans balances tail-heavy move engine forward inserting additional plywood spacers between firewall engine mount engine should point straight ahead slightly left Hand glide model sure theres no stalling diving tendency Correct shimming front back stab pieces thin ply should definite glide circle right Run engine few times familiarize yourself pacifier fuel system make sure engine cutoff works first flight try 5-second run prop backwards engine running full bore probably wont tell much should get rid first flight jitters model does anything climb straight out shallow angle may have problems sharp turn may mean have misaligned rudder bent fuselage steep climb stage means have too much incidence now flights will made full power prop proper direction Reason hot free-flight pattern depends being trimmed certain speed various adjustments make deli cately balanced work against other properly maximum climb speed try work way up gradually power 11 find yourself undoing low speed adjust ments go along So bite bullet try full-power test fight about 3-second engine run model should climb straight Out steep angle Adjust thrust offset correct turning tendencies right launch Remove incidence model shows looping tendency short run has shallow climb angle nose begins tuck under add incidence shimming rear stab get going straight out no looping tendencies 3-second run increase engine run 2-second increments model tends go left longer engine runs add right rudder tab Use pieces 1/16 x balsa cut trailing edge section glued February 1980 125 ing compound Assemble complete model move pylon until ship balances indicated very slightly forward epoxy place
Edition: Model Aviation - 1980/02
Page Numbers: 40, 41, 124, 125
1980 NATS Unofficial Events writing isnt certain will Nats let alone will Terry Rimert has planning already started Terry NFFS Unofficial Events Director 1979 did bang-up job rather thankless job reminds thanks Terry figured learned enough experience could better job 1980 planning such events has bit chaotic past somewhat understandably AMA has regarded whole affair thorn side things have looking up despite proliferation such activities tends multiply chaos requires coordination department becomes difficult ignore event except Hand-Launch Glider 14 Gas enjoyed greatest partici pation Nats event despite its unofficial stigma several years running Im talking about Aeronuts/NFFS-sponsored Pennyplane event before itbecame anofficial AMA event participation isnt governing criterion three guys/gals show up event cant get way anything else much problem administration down proportionally too seems appropriate attitude Hedonistic its fun Isnt what supposed \about 13tACF4J C14 21 OUTDOOI2 HAND LAUNCH LIDCI2 LAJ2I2Y SAENT 1st 79 Nats ls$ 79 Sout-twcsr I2e8ionaLs ZndTQ L5FreeFIit Ckamp5 79 TuLci Qlue Dobixr Tropktj IO jiraj vz 3 z1 r-1 II -- 0 40 Model Aviation Sugar spice thats what HI Gliders made hare mighty sweet Blackjack Good nameit scares 21 nose -3j 4 4 5 fLat f[at 4 neat DT-fuse installation picture left parts shown right assembly left Typical installation shown pic right Bob says can make UD bunch little time takes make iuss Marnie Bobs aranddauohter chaos becomes unnecessarily intensified some club announces some six weeks before Nats going sponsor some event Chances knew going sponsor some months calendar just sort slipped away announced time event conflicted another unofficial event several official ones also turns out another club planning sponsor save event No kidding happens Part Terrys goal have competitions official AMA events official Nats menu addition course will some traditional unofficial events such Embryo Endurance RubberPower Speed wonder AMA will get around following its own rule about being improper have events official AMA events official Nats menu digress thats going Nats seems conflict inevitable minimize requires coordination thats what Terry trying takes effort also time So squid effect part Terrys Early Warning System Anyone wishing willing sponsor Nats unofficial event should contact him soon possible no kidding address 367 Orange Ave Baldwin Florida 32234 wonder should mention Terry Milpitas Twang-Hook Tweekers thinking about sponsoring unofficial event R 0 W electric-power canard-biplane-ornithopters Oh well theres plenty time Look Ma No Ribs Did waste youth naught whittling ribs could have wasted something far important such gluing stick stick B Hm waste no time solution hand present first time anywhere entire universe Meuser Un-Patented Ribless Con struction Technique Now youre awed half death lets get dont consider chunk 1/16-sq proper rib stretch imagination insofar outdoor free-flight technology con cerned indoor-type sliced rib also ranks pretty close ground zero totem pole sophistication So term ribless seems ap propriate Now believe fancy tables airfoil-section coordinates really mean whole lot relation free-flight model aviation going have little problem what follows After have plotted few dozen airfoil sections built few hundred wings might dawn you real sharp covering between ribs does whatever wants regardless ofwhatthe ribs either side tell solution carefully constructed sheet-balsa covered surfaces both windtunnel tests half-century competition experience have shown such slick airfoils really arent great Multi-spar construction will beat suede-shoe slick-surface lads field battle super-slick sheeted surfaces usually benefit being crummied up turbulators bottom surfacedetermines kind stick required replace rib bottom flat use square stock preferably rectangular stock edge bottom undercambered use indoor-style sliced ribs After size shape non-ribs has determined spars simply sit top non-ribs determine shape top surface simple straight wing stab standard-size strips will usually adequate two spars wing stab tapered might find necessary strip spars sheet stock Center sections tips dihedral breaks present minor problem easily solved tips simply scab piece oversize sheet stock after glue has set trim sand shape center sections dihedral breaks fill between spars sheet-balsa scraps Let stick up above desired level trim sand proper height afterwards Neat DT Some FFers like put DT fuses aft end model some like closer home closer CG wont bore prejudiced list pros cons suggest try both ways decide Now have decided forwardmounted fuse read photos show set-up has paid off dozen models Make up half-dozen crack installation onto model takes about minute parts shown right side first photo Punch hole bit 1/64 plywoodor 1/32 think can stand additional 01 grams using paper punch Cut off piece -OD aluminum tubing about half inch long rolling under knife blade course two -in lengths 9/32-in OD tubing Short lengths tubing tend skoonch out shape knife-cut helps stick piece dowel smaller tubing inside cutting worse straighten out pushing over centerpunch other tapered object Bend glass-headed pin shape shown go out buy glass-headed pins local department store dont settle plasticContinued page 122 February 1980 41 Dontlook nowbutthe bustle back forguys aswell gals isa nanaywalst-packsurvlval kltTrom JImurocket llepllcastnatnolastne miscellany wont fit pockets Handy says Bob Appeals ye Ed tooreal marvey pipes tobaccol Survival Kit guess could call rump pack belly pack depending whether facing north south put great carrying odds ends camera binoculars liquid refreshments compass DT fuse extra rubber bands perhaps spare pastrami sandwich snake-bite kit etc Stuff would like have close hand too bulky fit pockets Flip around front get stuff out flip behind will out way rye using decades got ski shoppe years ago Shops specializing rockclimbing back-packing sometimes have too now market designed especially vo0 does enclose required cubic footage addition soft light-weight insulated pouch precisely fits pair cans Gatorade beverage choice fabric coated inside something like vinyl same sort stuff used make finest back-pack bags zipper husky plastic-toothed affair sort has proved relatively grit-proof Web tabs sewn pack near ends zipper make easier zip unzip quickattach/release buckle apparently made injec tion-molded fiberglass-reinforced Nylon simi lar light tough material does its job selfassured manner introductory price $1995 plus $200 shipping plus 6% tax live Califomia source Jim Crocket Replicas 1442 N Fruit Ave. Fresno CA 93728 Tell him Bob sent you. Bob Meuser 4200 Gregory Sr. Oak/a na C4 946 19 Fial/ Daily continued page 57 cowling removable noseblock fit Make round noseblock mediums sheet add engine crankcase also made two thicknesses s sheet front block Add 7 Williams Brothers 34-scale cylin ders cut half lengthwise noseblock Fashion key backside block Carve front radius cowling very carefully Fashion gun troughs wet 1/32 soft balsa slip slots cut top cowling Sand until smooth Fill grain several applications talcum powder dope sand well Carve block very soft balsa fabricate sheet balsa fairing fit between wing root fuselage leading edge Fashion oil cooler scoop medium-weight balsa scoop functions very effective belly skid build Fiat gear up Add tailwheel proper location re tractable Add dashboard windshield structure Wings The inboard sections dealt fuselage section outboard wing sections built separately later attached rib B First laminate wing-tips three thicknesses 1/32 x 3/32 balsa Laminate leading edge two pieces hard t/16 sheet 85 inches long 5/16 deep Taper leading edge 5/16 xs atRibA tos sq atthelastoutboard rib trailing edge laminated two pieces 1/16 s sanded triangular section Assemble wings laying down tips leading edge trailing edge duplicate Rib Glue together add tapered main spar Rib tothe wingtip Now add upper lower wing ribs indicated locations sure use hard balsa wing ribs Slice ribs according patterns upper lower ribs hand fit location Add 1 / 16-sq upright brace front behind main spar rib help keep large lightweight ribs collapsing stressed wing completed glue Rib inboard wing sections very careful line up wings same incidence angles dihedral angles used l4 inch dihedral tip Tailplanes Construction rudder eleva tor surfaces straightforward hinged surfaces wire thereby making necessary use double spars structure However did cut laminated outlines tips helps keep hinged surfaces stiff still allows plenty movement adjustments Sand tail surfaces symmetrical section before attaching pin joints fuselage use pin joints pins embedded structure attachment points fuselage because event crash structure will break loose easily little no damage fuselage structure Covering Finishing covered Fiat light-weight Japanese tissue Before actually begin covering model sure scallop fuselage formers between stringers Dremel piece fine sandpaper wrapped around 4-in dowel eliminates former bumps will make much attractive covering job used thinned Elmers glue 1 3 parts water attach tissue wings tail surfaces should probably covered before final assembly fuselage covered long strips tissue spanning distance between two parallel stringers 124 Model Aviation REALISMSCALE ACCESSORIES WILLIAMS BROTHERS RADIO CONTROL CONTROL-LI NE FREE-FLIGHT J1LUA SCALE PILOTS E WHEELS CYLINDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS SEND 5Ot FOR COMPLETE ILLUSTRATED CATALOG DEPT MA 181 PAWNEE STREET SAN MARCOS CA 9 ILLA 19216 Calvert Street Reseda CA 9 time consuming way it sure looks best Add balsa gun fairings water shrink entire covered plane like shrink wing washout rather build used about Vi inch washout wing tip Dope plane two coats thinned dope preferably nitrate have added appropriate amount plasticizer cowl section mentioned before covered filled several coats dope talcum powder followed sanding Take time because cowl must look like metal rather grainy balsa really want niftylooking Fiat After clear doping select favorite Fiat color scheme chose sand spinph effect yellow cowling light grey undersurfaces used Floquil Model Railroad paints thinned very thin nitrate dope sprayed airbrush After adding colors details such panel lines can added soft grey pencil fixed coat clear nitrate sprayed Fiat built gear up simulated gear doors wheels bond paper glued place rubber cement numbers cut either black red tissue doped Next add pilot carved foam machine guns made balsa aluminum tube stack Trimming Flying used 9-in PeckPolymers plastic prop large Peck-Polymers bearing 50 down thrust finished weight Fiat rubber about 70 grams slightly over 2 oz about 95 grams rubber used 4 strands 2 loops FAI 3/16 rubber total length rubber about 15-17 feet Tie rubber good knot lube Dow 33 Sig Rubber Lube proceed braid motor having buddy hold knotted end motor put about 17 winder turns 161 winder Now grab knotted end buddy still holding onto other end place both ends over index finger Pull out now 4-stranded motor several times until looks nicely braided Install motor plane test glide over tall grass glide reasonable try few winds launch plane slightly nose down everything still OK try about 30 winder turns Fiat flies large left circle left glide properly trimmed will fly slightly nose-up attitude glide very well braided motor fly fun about 100 winder turns 1600 total turns get 45 seconds duration go broke 130-plus turnsexcept cant get turns 161 winder motor too strong plane flew 153 beat Mike Midkiffs super Hellcat FAC Nats needed use 51 winder get over 2000 total turns Good luck yours Now Ithink Ill try Bill Winters Grumman bipes Editor old timer thinks Curtiss SOC-3 biplane has potential bipealso MAN gosh knows Manito Hutchinson continued page 45 quickly short useful lifetime Use about three coats nitrate dope clear epoxy final coat Give couple extra coats front portion stab since exhaust residue seems collect Fuselage Use metal straightedge cut Out sides add nose tail doublers Draw top view out piece 3/32 sheet dont cut out yet Pin bottom building board glue formers Hot Stuff works well fuselage construction Add sides check ing carefully alignment Sand fuselage assembly add top Build pylon gluing pylon core bottom ribs Add formers checking core truly vertical Add tip ribs sand cover 1/20 sheet fin built same way no central core needed Cut out two sides outline shown glue fin ribs side Hot Stuff Sand no rib edges stick out glue other side recommend epoxy finish like Hobbypoxy fuselage High-nitro fuels will destroy other finish very short time Cover fuselage tissue using nitrate dope better epoxy adhesion Apply couple coats nitrate lacquer sanding sealer two coats colored epoxy add additional coat epoxy front end Wet sand first coat #400 wet-or-dry sandpaper final coat #600 Rub out Dupont white polishFlying Dont too much hurry get out flying field Assemble model check thoroughly proper balance correct warps CG should shown plans balances tail-heavy move engine forward inserting additional plywood spacers between firewall engine mount engine should point straight ahead slightly left Hand glide model sure theres no stalling diving tendency Correct shimming front back stab pieces thin ply should definite glide circle right Run engine few times familiarize yourself pacifier fuel system make sure engine cutoff works first flight try 5-second run prop backwards engine running full bore probably wont tell much should get rid first flight jitters model does anything climb straight out shallow angle may have problems sharp turn may mean have misaligned rudder bent fuselage steep climb stage means have too much incidence now flights will made full power prop proper direction Reason hot free-flight pattern depends being trimmed certain speed various adjustments make deli cately balanced work against other properly maximum climb speed try work way up gradually power 11 find yourself undoing low speed adjust ments go along So bite bullet try full-power test fight about 3-second engine run model should climb straight Out steep angle Adjust thrust offset correct turning tendencies right launch Remove incidence model shows looping tendency short run has shallow climb angle nose begins tuck under add incidence shimming rear stab get going straight out no looping tendencies 3-second run increase engine run 2-second increments model tends go left longer engine runs add right rudder tab Use pieces 1/16 x balsa cut trailing edge section glued February 1980 125 ing compound Assemble complete model move pylon until ship balances indicated very slightly forward epoxy place