Control Line: Aerobatics

E Aerobatics 0 Wynn Paul FAI TRYOUTS capable troops Atlanta Stunt Conspiracy will put team tryouts 1978 World Championships over Labor Day week end Ft Gillem Ga active Army base just south Atlanta site features room approximately five control-line circles additional space within quar ter mile site has used successful PAMPA Region 5 champion ships past three years lanta crowd puts great show very well organized run relaxed yet efficient contest FAI team tryouts open AMA members pay $50 entry fee Pre registration should Keith Trostle 10900 Phillips Dr Upper Marlboro MD 20870 Information about site ac commodations should directed Jon Ramsden 9035 Gatewood Dr Jonesboro GA 30236 Tom Dixon usually acts CD Atlanta contests will probably fly tryouts direct requests Jon West Coast Model News remember name good little newsletter California 40s 50s may can help find copy has Nationals results 1952 Probably will August September None magazines ran complete results AMA does have record event can keep newsletter just send some quick copies results Fuel Tanks Ive griping print about lack fuel tanks 46-size engines since way back September 1975 alas stunters will still have make own unless want try clunk tanks Jim Lynch Bob Baron like Randys Model Aeronautics has stopped producing tanks indefinite time two sources knowl edge Lee Eaton 12943 Winthrop Ave Granada Hills CA 91344 Randy Hancock 541 Columbia Lexington KY 40508 606-252-8137 would seem tank man ufacturers Fox World would take quick look results Nationals sales ST 46s realize stunt fliers using 46-size engines require 5- 525- 55-oz tanks Talking about tanks Al Rabe visit ing Lexington recently mentioned past couple years has using fuel tank actually almost parallelogram shape least back end slightly extended outboard side Als reasoning forces remaining fuel end run col lect outboard corner uses old familiar style Veco-type tank fulllength bevel lengthwise baffle punches about five holes front baffle just like Veco did feels since airplane traveling circular path fuel can better forced outside rear end tank end parallel radius center circle Well its worth try Anyone has ever watched Al knows engine run always consistent chops off very nicely after patented loop end flight uses straight suction muffler pressure 46s 60s Lets run over couple other items about tanks Remember engine runs rich plane inverted inverted engine installation have either move engine away bearers down upright plane position raise tank upright Continued page 83 August1977 37 Bill Werwagss Paul muffler installation Fox 35-powered Ares Wynn Paul photo Jim Armours Sig Twister kit has built-up nose profile aft wing Engine Max 35 Ron Farmer 95% size Stiletto powered Max 35 engine Photograph Wynn Paul Andy Lees Toucan Max 35 54-in span weight 46 oz has 3/4 anhedral its wing two meters shortens radius less one-tenth percent creased load pulling continuous 23 Gs can hardly worth best posi tion down low Few juries foul pilots flying below two-meter limit its done time encourages lot real low flying Normal flying isnt problem question passing passing two time instancehow high should fly best solution time few laps flying high six ters speed timed increasing consider using maximum height allowed during pass reduces radius about 35 percent Also dive down normal height lower after pass will help gain speed passing fastest people continued W R Lee 3522 Tamarisk Lane Mis souri City TX 77459 CL Aerobatics/Paul continued page 37 position usually easier move engine down try move tank up Les McDonald suggests installing spray bar 5A mounts one-inch-thick tank should give leaner run inverted However Al Rabe argued AAM moving spray bar 46 did change run Well try both ways self see what works think Al may have valid point hypo thesis height spray bar counts height fuel pickup tube mass fuel-head location relation engine Al presently concerned internal vol ume engine crankcase dis tribution crankcase volume stating volumes may cause difficulties crude yet usually effective fuel de livery systems agree wonder can get such sophisticated engine runs through complicated series maneuvers amazingly simple fuel tank sys tems commonly use Al tried Perry pump big honker ST 60s feels necessary ST 46 35-size engines certain keep plumbing pickup tube spray bar good straight line no large bends kinks upand-down routing over-and-under rout ing Another point remember ad justing tank engine etc careful about fuel tubing Whenever check tank remove tubing spray bar tank always put n new clean tubing after carefully wiping off spray bar nipple fuel pickup tube Ten cents worth tubing better losing ten-month construction project Use small fuel filter such HiJohnson filter large filter can allow air accumulate filter itself can cause cutting out Try different filter sizes think may problem Make certaii pickup tube goes way very back end fuel tank soldered outside wall two places Cut 45-degree bevel end pickup tube sol dered tank Make certain tank clean inside airtight Dont let tank vibrate forced build own tank since manufacturers coming up essential itemthere couple very good articles lately tank building especially Dave Rees FM Jan 77 p 42 Harry Higley some good pointers construction MAN July 75 whole column de voted tanks MA Jan 76 Use 008 K&S solderable tin Werwage Higley Rabe Paul etc 006 Rees Dont use brass shim stock tank will come out weighing 25 oz Use 60 tin-40 lead 50- 50 solid solder Use flux such Kester Nokorode La-Co use silver solder will corrode terribly dont need type strength certain use 125-in OD soft brass copper tubing Dont use hard brass Higley sells very handy tubing bender $125 works Bisco bender available Harry 433 Arquilla Glenwood IL 60425 Just review classic fuel tank Veco configuration has August1977 83 UNBELIEVABLE HORSEPOWER 65 cc K & B 65cc 40 RIC Front Rotor CONSTANT FUEL PRESSURE Regardless Position TheK&B 61R/C Perry Pump/Regulator Fuel drawn fed large bore Perry carburetor through pressure supplied regulated pump unit increases hpto equal surpass 61 engines made today Additionally advanced step model engine fuel systems permits fly ing position fade out . placement fuel tank no longer critical K & B 61R/C Muffler Same engine above Perry Pump/Regulator KE MANUFACTURING DIVISION OF AURORA PRODUCTS CORP 12152 WOODRUFF AVE DOWNEY CA 90241 NEW FORD TRI MOTOR 1195 Unique because such amazing scale deti kits relatively ~ ways such~edg1~ Mlfljred j yOU 1W see oUr neW two C Wal flOt~er bOO15 0 sP j~oCI yOUV- s clearly shown ~uuing arugnly detailed Plastic Parts touch realism-in-miniature NEW MESSERSCHMITT 495 BEGINNERS ZERO Nifty control line models Theyre easiest ones world assemble-all wood no tissue coveringonly 6 9 parts depending model ex cept Biplanes have few Genuine Nylon motor mount THEYRE AT YOUR DEALER GET OVER AND SEE THEM NOW outboard bevel length tank Out side cross-section dimensions two inches design length tank equals capacity fluid ounces Les McDonald uniflow Rabe Gieseke prefer type tank long bevel Randy Hancock tanks rectangular shape 1 X 2 small bevel starting approximately 2 back end tank 47/g long holds approximately 5 oz fuel todays pattern Fox 35 needs four oz fuel 5 percent nitro Same Max Supertigre 46 275 venturi 10% nitro fuel needs approxi mately 55 oz tank capacity Using 5% OMPLETE THIS FORM ND ATTACH MAILING SUE DEL FROM RECENT LET US KNOW WHERE YOU ARE GOING move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATEZIP ________________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 ready bolt placeComplete control system less handle lines decals landing gear wheels etc makes building cinch assembly literally minutes can use 049 engine nitro usually works better 280 venturi need about 525 oz fuel maybe just 5 oz way re placement venturi available Bob no Hunt CSC Now know will 14 different opinions some above specs good start ing points until can see what works Bill Werwage likes tanks 1 1 wide fuselage feeling have fuel head pressure feed pickup tube 46 means need tank about six inches long try make tank thicker inch may have spray bar-pickup tube problems although Bill has used tanks P/s deep Bill flying HP 40 Ares size last summer using 55- 575-oz uniflow tank Fox 35 ST 46 uses straight muf fler pressure old-fashioned suction type tank alternates between using both vents hooked Y fitting using just vent muffler Dan Shafer Dayton Ohio using HP 40 reports uses uniflow muffler pressure 575-oz tank small wedge rear 280 venturi 10% nitro fuel makes tanks 1 high 1 wide information PAMPA com ments contact Wynn Paul 1640 Maywick Dr Lexing ton KY 40504 Fokker T-2/Stark continued page 40 simulate different shades coloring plywood sheets wing can lightly stained random pattern rectangles scale plywood sheet size Now dope thin strips Silkspan shown plan simulate lap joints real airplanes fabric cover ing entire wing can now covered white Japanese tissue given two three coats clear dope Fuselage Construction old-time builtup few unusual wrinkles First two sides arent identicaL basic structure real airplane visi ble through large windows pre serve scale appearance model du plicates location structural members Instead building side directly top other tradition al side built separately differ ent plan views Also since real air plane built steel tubing model structure cabin area visible through windows should round painted gray Rounded Vs sq balsa used original model visual effect good could improved using 1/16 hardwood dowels uprights other structure cabin areabut longerons After sides com pleted join rear add cross pieces Kraft C clamps excellent purpose help insure squareness nose built primarily sheet balsa thin aluminum covering top bottom bottom covering stalled very small wood screws can removed acess motor charging jack switch can installed bottom covering Suitable aluminum purpose can come clothes-drier ducts available hardware stores modest cost front radiator piece thin plywood held place lip bottom cowl covering Astro 020 motor held TIGER MOTH 1295 84 Model Aviation