Control Line: Scale

THE THREE-LINE-HANDLE throttle ad juster idea submitted Mike Wel shans Ferndale MI will probably recognize Mike major contrib utor pictures ideas column month Mike sharing us idea throttle stop adjuster can fitted GS/LR Roberts type three-line control handles accompanying sketch shows de tails throttle-stop adjuster can easily made items normally found shop piece sheet brass /B wide 1 long 025-035 thick serves base adjusting sembly mounted adjusting assembly consists 4-40 threaded rod about 2 long several 4-40 nuts short 4-40 ma chine screw depending unit will mounted handle Construction unit begins drill ing hole /I6 in diameter end brass strip 4-40 nut soldered place over hole allowing 4-40 threaded rod screwed Put B C nuts rod glue two nuts place both ends threaded rod drop two epoxy drop su perglue will hold nuts place Mounting unit handle can accomplished couple ways Mike has unit superglued onto GS/LR-type han dle youre using older Robertstype handles its construction will allow mount unit drilling tapping 4-40 similar screw Throttle stop adjustment easily made materials found workshop en gine handle properly adjusted good idle can maintained fear acciden tal engine cutoff flying performing ground maneuvers Drawing Mike Weishans Adjustment unit easily done point engines idles nicely lines connected model doesnt stall Turn threaded rod un engines running move throttle leverContinued page 151 Mr Mulligan profile model L designed built Mike Weishans won 1st Profile Scale received CL Cleveland Air Race trophy 89 Ken Smiths Parma OH FG1 Corsair R also earned 1st CL Scale category Cleveland Photos Mike Weishans August 1989 69 Conoi Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 4-40 NUTS SOLDERED / s GS/LR OR J ROBERTS 3-LINE HANDLE Lester Farouxs Luxor PA Northrop P-61 took 3rd Profile Scale 1989 Annual Na tional Model Airplane Show Cleveland OH Kit scratch-built using Lyn Greens plan August 88 edition MA Plan No 594$B Photo Mike Weishans can have Remember should have enough wood left over two airliners CL Scale/Boss Continued page 69 til nut rests against throttle lever tighten nut B against brass mount will now able throttle back engines fear accidentally cut ting off wrong time engine cutoff desired after landing perhaps taxi Theyre ones have show up field clunky-looking model besides experts will admit better looking plane can actually betterflying plane lap thats required reach out give light pull throttle line nut designated C option Mike uses handle used model can tack glued place retain its adjustment location Mikes throttle stop adjuster provides quick easy way retaining throttle ad justments moving handle model model Documentation guide note last sue NASA Newsletter described its unique progressive airfoil completely eliminates tip stalling youre inexperienced builder assembling Freedom 20 will breeze Youll work self-aligning components precision-cut balsa plywood fiftinohardware youll need included booklet called US Guide Aircraft Museurns Michael Blaugher booklet its fourth printing packed some best information documentation has come along quite some time has very complete listing aircraft mu seums contents addresses visit ing hours pertinent fees would great addition docu mentation library Scale modeler copy guide send $5 including post age Michael Blaugher 124 East Cominued page 155 August 1989 151 beautiful last superb sport-trainer looks good flies Lots experts will say shouldnt worry about looks choose trainer DREAM TO FLY THATS DREAM TO BUILD _______BETTER LOOKS THAT COME FREEDOM 20 FROM BETTER FLYING NCI-F GATOR RIC PRODUCTS TIGER TAIL 4S DELUX ALL BALSA KIT An new Tiger Tail 120 four strokes piped 60 two strokes beautiful performer competition just showing offi balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area 860 sq Complete Delux Kit515995 TRANSMITTER CASE An inexpensive rugged molded case protest expensive transmitter both two stick single stick transmitters Black leather grain aluminum trim locking clasp S 1995 MV-I TYPHOON New F3A competition Big beautiful flyer balsa construction plug-In wings 120 four stroke 60 two stroke power Plans-two sheets 51495 Fiberglass cowl $1895 Clear butyrate canopy. S 995 OTHER PLANS Tiger Tail 4S-two sheets 120 four strokes51495 TAR baby 120 four strokesS 2195 Alley Kat 40 size trainer sportS 895 Gator Flea 40 size sportS 895 Bobcat 40 size sportS 895 GATOR SOFT MOUNTS COMPLETE SOFT MOUNTS INCLUDES AU HARDWARE Optimized lowest vibration transmission airframe minimizing engine shake Available YS-60 OS60 SOFT MOUNT COMPO 4-lug Mounting Plateb black anodized Undrilled 5595 DrilledforYS-600r05-60 5695 Rubber Iso-Mounts SIB diameter x 112 long wIth 832 female end 832 s 112 male other end Specify soft SO durometeryellowj firm 60 durometer-purple Each. $3OOPkg0f4$995 feather Ilte glass cloth 7 ozsq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions- 5895 Include $2 SOiltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 CL Scale/Boss Continued page 151 Foster Parkway Fort Wayne IN 468061730 might also note Smithsonian Books Drawings has released newly revised edition National Air Space Mu seum CDB Bryan 300 photos book takes inside worlds visited aviation mu seums price $4995 $4496 museum members can ordered call ing 1-800-678-2677 Reminder From time time receive let ters ask whether Radio Control can used CL Scale models model basically controlled twoor three-line system other functions such flaps gear retraction dropping bombs fuel tanks etc controlled radio equipment recently asked Ronald Macknet Yulee FL may technical rea son flight operations other func tions CL models cant radio con trolled AMA rule book forbids use radio transmission prohibited paragraph 2 General Control Line rules page 23 1988-89 AMA Compe tition Regulations Book states Control Line model aircraft flown steel wire lines metal lines equivalent strength tached model manner providing aerodynamic control models eleva tion through manipulation control sur faces during flight Such manipulation control surfaces may accomplished either mechanical means electrical im pulses transmitted through lines use mechanical well electri cal impulse systems has previously ex plored column months throttle stop adjuster example have ideas along line send use column Im sure others would interested Miscellaneous While rummaging through local automobile supply store recently came across interesting item want quick way simulating access mainte nance panels Scale models might want try Its called Metal Mend Tape available through Trimbrite Prod ucts Spartan Plastics Inc PO Box 67 Holt MI 48842 Metal Mend Tape self-adhesive alumi num comes 3-in 5-ft roll about 1 sq ft material about 004 thick roll paper back ing weighs about 1A oz semibright sheen Application adhesion alumi num works best surface com pletely smooth free imperfections possible Care must exercised applying material can easily wrinkled Once place can worked smoothed tools made rounded soft balsa sticks soft cloth using hand pressure application best fairly flat sur faces material can stretched slightly worked around moderate curves After its adhered surface can scored simulated dzus fasteners riv ets etc painting desired very light sanding surface 400 500 grit wet dry paper will help adhesion paint might also note Trimbrite Prod ucts has large selection pinstripe tape both single multistripe styles Primarily designed use automobiles can also used dress up Sunday flier Publicizing clubs CL Scale activities should go beyond own club newslet ter Quite often see reports did what local club Scale meet could report words results would much interesting see pictures some models flown con tinually read newsletters know new models being brought out time share read ers Lets keep CL Scale alive moving forward Please send ideas comments contest ac tivity reports especially photos CL Scale activity address very top column CL Aerobatics/Fancher Continued page 70 fly Michaels ship make long story short nearly crashed ship turned half heartedly inside nearly impossible turn outside Ninety-degree round loops werent fault poor piloting airplane simply would turn tighter After surviving flight examined Ban shee closely standard answer lack corner lack turn case move CU aft Experience told ever Mikes CG plenty far back moving would cause harm good plenty control movement pushrod properly supported fairleads line tension adequate ensure full deflection controlsyet ship still didnt turn solution problem seal el evator hinge line Michael installed con trols using Klett/Du-Bro-style pinned nylon hinges pinned part hinges about %2-in diameter Unless recess made control surface during construction result gap %2 1/8 between movable fixed parts surface gap caused Banshee turn like trainer rather like Stunt ship advertised Once sealed gap ship took new life perfectly capable rule-book-size maneuvers square corners nicely balanced rates turn both inside outside Lets take look unscientific birdmen believe flap elevator performs its function deflecting airflow over angle surface up will deflect airflow push surface away thus making ship turn nitro breath What actually takes place change shape total control surface airfoil See Fig ures II neutral airfoil symmetri cal air pressure above below sur face equal movable surface de flected either up down have created cambered airfoil Because airflow over convex top airfoil must move farther concave bottom must move faster order get trailing edge same time air flowing over opposite side faster flow reduces pressure top surface pressure bottom ac tually increases fair amount differential pressure produces lift direction lowAugust 1989 155