Author: D.B. Mathews


Edition: Model Aviation - 1999/03
Page Numbers: 67, 69
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DB Mathews tU~uy o L#3ciuzi TI LS U Really Big Last month mentioned 250 sq square inches per 10 Cu cubic inches benchmark light low-speed model aircraft such Old-Timers primary trainers other hand performance requirements lower ratio weight required velocity aerobatic performance increase 60-size sport Pattern model will have average about 800 sq 130 sq per 10 cu power wild unlimited-verticalperformance model will have little 60 sq per 10 cu Just fun Ill put ranges John Lights -size Laser model weighs 54 pounds spans 144 inches 12 feet has about 3900 sq wing area Hence wing loading neighborhood 32 ounces per sq ft actually light model size power plant 3W 200 twin 12 cu swinging 30 x 10 propeller twin-cylinder engines get large improved efficiencies inertia etc overcome losses inherent smaller twins figure full displacement Stir wing area-per- 10-cu-in concept startle yourself come up 32 Johns Laser quite aerobatic very strong vertical maneuvers maintain room model airplane hobby everything everybody Laser does take up great deal room Fantasy first saw John Light fly 1/2-size Laser JIVIAA International Miniature Aircraft Association fly-in Sauna KS wonderful field far south end old municipal airport concrete runways etc About 150 feet west runway end large metal city water tank During Lasers flights John experienced radio glitch stray radio frequency harmonic bouncing off tank during low knife-edge pass model veered rather sharply toward water tank before John recovered Bill Carpenter wondered model actually hit punctured tank would accident have made evening news KrylonTM Finishes past columns overviewed several finishing techniques models Several paint-type products mentioned wasnt plain ol hardware store spray-can KrylonTM mostly because poor results long ago developed preference RustO1eumTM Apparently problems technique product builders use KrylonTM acceptable results can seen months photos Charlie Wohi built Mr Mulligan Bud Nosen kit hed someday shelf years did beef up some March 1999 67 Charles Wohi -scale Mr Mulligan Charles applied KrylonTM primer sanded covered spray-can white Randy Winter de Havilland Chipmunk Art Scholl colors KrylonTM covered clear Centurion auto enamel wet look Dennis Dornshulds -scale Ford Flivver Duane Dahnert plans Painted dark blue silver KrylonTM structureparticularly engine mount area wing spars Power Zenoah 45 covering Super Coverite Charlie sprayed KrylonTM primer sanded well used spray-can white glass-smooth resultant finish very scalelike just something macho about Mulligan Charlies looks good flies well has great joy him Dennis Dorushuld built Ford Flivver Duane Dahnert s plans mentioned several times before Flivver powered 05 90 FS covered Super Coverite painted dark-blue silver KrylonTM producing very attractive model Dennis duplicated Dahoert s construction throughout working oleos landing gear true-scale steerable tailwheel lettering cut stickyback vinyl local sign company reasonable price Flivver charming design offers interesting change-of-pace IMAA fly-ins because its diminutive size meeting rules true -scale model Chipmunk work Randy Winter beautiful rendition German kit imported Cactus Aviation Power Quadra Arrow enough oomph spectacular aerobatics An onboard smoke system adds spectacle Incredibly least Chipmunks colors KrylonTM over glass-and-epoxy finish KrylonTM sprayed sealer coats clear Centurion auto enamel create wet-look finish fitting contemporary full-scale subject Decorations Model Graphics As mentioned previous columns KrylonTM RustOleumTM have temperature limits application limits printed cans applies air temperature cans contents Warming Rust0leumTM setting can pan hot tap water warms material greatly improves its spraying leveling setting Dont overheat cans youll create spectacular skyrocket trails paint over everything lets go Fully hot water water heater plenty warm dont consider nuking can microwave Really Small received some servos FMA Direct absolutely astonishing S70 tiny micro name might mean assembled under microscope listed dimensions dont reach out grab much actual size ones hand things much bigger postage stamp about 3/ inch thick Weight e yet rated 11 inch-ounces thrust Now comprehend Indoor Radio Control RC designs possible lifetime Ive seen single-channel RC airborne systems weighed 16 ounces dry cells two-channel systems weigh less three ounces Add proportional movement high reliability much lower cost adjusted inflation rechargeable batteries equation contrast astonishing go Systems require magnification install Peanut Scale Could Visual Realm modeISPORT magazine traditional printed publication rather monthly series videos about two hours length divided segments ranging engines tips tricks helicopters event reports step-by-step construction new kits Unlike videos type photography first-class production crisp concise perhaps importantly editing tight avoid grinding boring viewer am particularly impressed producers suggestion tape donated local school library after viewing excellent idea should same magazines Staying Lit Ive using ElectroDynamics EDR- 103 onboard glow lighter system year has worked flawlessly no radio frequency interference maintenance problems use plugged auxiliary channel moving trim lever much does carburetor heat full-scale airplane same reason engine will flame out takeoff landing Current draw function time on inverted four-stroke engine am able start up taxi take off land three four flights advent 15-volt fast field chargers has made maintaining charge single-cell unit simple thing Speaking charging field Smart Chargers have become basic battery management tooL especially like peak detection automatic switch trickle mode routinely recharge transmitter flight pack field after couple flights use chargers home chargers can run 110-volt household current using 12-volt charger 12-volt battery also running Smart Charge Apparently battery levels off current flow since system wont work 110 volts battery circuit problem since 12volt battery ends up being charged same time flight pack Winter Blahs established fact ones psyche affected sunlight lack thereof other words winter depression has cause Id last suggest youre going go mad heart winter unless keep busy workshop modelers fortunate have hobby keeps minds hands busy building though arent flying Winter great time inspect models stem stern repairing wear tear summer flying dont forget cycle batteries month What nonmodelers pass winter Get Internet chat other people bored out skulls Beware becoming Internet introvert might able tell previous comments Im winter flier Sometimes buddies call say Doc theres no wind lets go fly off skis response can standing snow Call March ces Model Graphics 121 Cove Rd Hemphill TX 75948 FMA Direct 9607 Dr Perry Rd #109 Ijamsville MD 21754 ElectroDynamics 31185 Schoolcraft Rd Livonia MI 48150 Duane Dahoert Plans 7209 Bryant Ave S Minneapolis MN 55423-30 18 modeISPORT magazine Panache Productions Call 800 682-8948 dealer near March 1999 69 John Light 1/2-size Laser 12-foot span weighs 54 pounds has 3W 200 twin 30 x 10 propeller Glass-and-epoxy finish