Japanese `Myrt'

Roland H Baltes WHEN THE CARRIER event rules changed allow foreign aircraft eligible 100 bonus prototype points searched suitable Japanese aircraft model Nakajima C6NL struck eye due its clean lines ideal proportions Carrier event large wing area relation fuselage frontal area long nose tail moments plus sufficient room nose jam big 60 engine prototype aircraft designed Nakajima Aircraft Co 1942 sat isfy Japanese Navys need longrange high speed reconnaissance aircraft Introduced service 1944 C6NL Saiun Painted Cloud given code name Myrt Allies Over 460 produced end World War II Considered advanced design served both land bases carriers model designed built Class 2 Carrier event use old high-performing reliable MCoy 60 engine combination has ex tremely successful contests West Coast beating out Rossi 60 powered Guardians occasions local contests reliability what gets winner circle placed 2nd 1974 1st 1975 Southwestern Re gionals near Phoenix hot-shots interested snappy performance use Rossi 60 shown plans similar high per formance engine model encour aged designed strength lon gevity incorporating plywood criti cal areas like center section wing nose/engine compartment use stock RC 60 engine should overlooked either tank location Among features make model excellent choice large wing area rela tion frontal area long nose tail mo ments plus plenty room nose model allows use suction engines combined good RC 60s scores 500-point range possible Roberts three-line bellcrank system used elevator throttle control bellcrank plus corresponding handle should available well-stocked hobby shops model incorporates split flaps prototype improve slow speed performance flaps linked tail hook can lowered flight quick full down elevator movement flaps add somewhat con struction complexity can eliminated desired Flying performance has extremely goodfull power take-offs can problem high-powered models due torque effect docile because wide-stance landing gear addition length angle gear make easy landings minimizing broken props constructing model use epoxy glue highly recommended Strength extreme importance car rier model especially motor mount area bellcrank platform landing gear wing tail surface joints fuselage Materials needed model shown plans wing should started first like cut out needed parts early game can trail-fitted together wing center sec tion ribs 1 through 3 both spars forms initial structure leading trailing edges remaining ribs landing gear wing tips subsequently added Extreme care should used during installation Roberts bellcrank 50 Model Aviation Ideal proportions beautiful lines make outstanding model Class II Carrier events FcIncsc jci NVIYRT ______ _____RISS ASS S 1M PUVR IASEIIIzI7iLI czzzzY IA PLYSASO FLAPS AM LMRIATES PSE L/R PLYSSOS SVS IS SARSWOSE ASTOR ROASTSfj 3 PROS PRAISE TSRPLY TAILlESS ROAST 1TIR 55555 AECO 7- POSES pc.CASEPT __________ _~ SEA IAPASESS ISSORIA .. ...,VECO ELEVATOR -2'dECOI/IC RISE FLAP P551505 244A I ES WRAP SASS I/C TUSIS SASS RELEASE RAISE II TYPISAL CROSEATIOSALL FORRERS AS I/C J HALTS LANSING HEAR SE TA IL TAP REFACES SORE SORES ISISRIA RAE NAKAJIMA C6NJ MYRT A C ww CLABA 2 CARRIER 0 01 -S Japanese Myrt insure operates freely Keep mind during slow speed flight very little line tension overcome friction sticky controls Before planking wings install leadout wire belicrank use Perfect heavy duty stranded cable add about oz wing tip weight Also install landing gear ribs 3 spar 2 using J-bolts wire wrap epoxy glue Flaps desired should now finished installed sandwich con struction consisting 1/16 balsa plywood used Sig nylon hinges Flap horns made 1/16 music wire brass sheet commercial horns can also used Before starting fuselage construction check motor mount spacing needed engine used necessary change location size motor mounts accordMeticulous detailing long canopy top notch finishing job make model scale-like ingly cut outs formers through 3 may have altered Note plywood doublers inside fuselage sides running former former 3 need epoxied sides Install formers epoxy sides mount fuselage wing Now add fuel tank pushrod flap wire plus rod throttle con trol Appropriate holes need drilled former 2 accommodate throttle rod fuel line fit check engine used including drilling motor mount bolt holes adding blind nuts appropriate stage construction tail surfaces should finished next hinges can various commercial types old fashioned cloth strip method Ele vator horns made two Veco horns cut apart Now install tail surfaces fuselage hook up elevator pushrod wire tail hook mechanism tail wheel add top bottom fuselage blocks somewhat hollowed out inside reduce weight preparation final finishing model sand thoroughly progressively finer sandpaper Fill nicks cracks plastic balsa added strength covered model silk doped Next add canopy made clear butyrate plastic material heat stretched formed over carved balsa canopy form process forming canopies really isnt hard once get hang After carving canopy form heat plastic sheet held tween two pieces plywood cut out center fit over form holding plastic over burner range hot plate oven until sags about 3/4 center Now quickly pull over canopy form should have mounted conveniently nearby may take several tries get trick good final finish requires lots sand ing filler used Hobbypoxy products due fuel-proof qualities especially using high nitro fuel Color scheme dark green upper surfaces light gray undersides black fuselage nose Japanese red insignia white out line can either cut decal material painted intend compete AMA contests AMA numbers must affixed upper right wing complete model flight install hook release loop final full down elevator control releases hook spring rubber band used pull down hook Tension may need determined trial error should strong enough insure flaps hook full down about 450 flap during slow speed flight Excessive tension may cause model nose over Pick calm day Myrts first flight avoid full power take-offs until get feel model Flight stable both during high low speed No rudder offset has necessary Per AMA Rules Class 2 Carrier control lines need 0 18 dia 60 ft long measured center handle center model Good luck happy flights 52 Model Aviation tail hook flaps down preparatory landing Myrt drags toward carrier deck pretty model Myrt code name really called Saiun means Painted Cloud