Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I
Edition: Model Aviation - 1988/12
Page Numbers: 66, 67, 68, 69, 164, 166, 168
Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I
Edition: Model Aviation - 1988/12
Page Numbers: 66, 67, 68, 69, 164, 166, 168
Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I
Edition: Model Aviation - 1988/12
Page Numbers: 66, 67, 68, 69, 164, 166, 168
Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I
Edition: Model Aviation - 1988/12
Page Numbers: 66, 67, 68, 69, 164, 166, 168
Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I
Edition: Model Aviation - 1988/12
Page Numbers: 66, 67, 68, 69, 164, 166, 168
Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I
Edition: Model Aviation - 1988/12
Page Numbers: 66, 67, 68, 69, 164, 166, 168
Top Speed models like have traditionally loaded secrets known select few within Control Line Speed fraternity Above Hemostats pinch off fuel line carburetor fuel bladder filled hypodermic needle pressurized fuel system such simplest way ensure constant engine run throughout flight THE ART building pure Control Line Speed model has well-kept secret number years Speed modeling has almost mystique known us started category its infancy other fliers shared secrets along way time has comein fact its long overdueto spread word about somewhat uncon ventional techniques initiate other modelers fun truly scratch-build ing type model airplane 66 Model Aviation Left Our author constructed alignment jig help make assembly model accurate made piece cabinet-grade plywood uses wooden pins hold components place during fitting gluing Right fuselage rudder place align ment jig cutout upper right-hand corner allow elevator clearance checking its movement adjusting pushrod First lets review proposed rules 21 Sport Speed classification Although have presented before various publications case some points either left out addressed properly rules follows 1 IntentionThis event intended low-cost low-keyed Speed class nov ice fliers allow anyone physi cally able pilot model Although open anyone interested Speed flying event promoted chiefly benefit newcomers goal introducing ginners class 2 EngineThe engine shall 2 1-cuin displacement shall operate open face minipipe exhaust system Modification engines permissi ble no hybrids crossbreeding en gines allowed 3 AirplaneThe model shall stan dard symmetrical design outfitted either upright inverted engines fuse lage shall standard full-fuselage de sign speed pan No pro files maximum amount asymmetry left wing right shall 1 engine shall fufly cowled model tractively finished No permanently tached landing gear required encourag ing use takeoff dolly instead ever using single-wheel gear optional 4 Lines control systemThe model shall operate two-wire control system minimum line diameter 016 solid strand Length shall 60 ft 0 measured centerline air plane centerline handle grip lines must connected outside wing tip model Pylon Brand link connectors Stock No 149 110-lb test equivalent lead-out wire shall stranded cable Pylon Brand No 145 stain less steel equivalent 5 FuelContest-supplied 10% nitro max imum 20% oil /2 castor thetic recommended 6 TimingThe model shall timed seven laps after three laps have com pleted pylon other timing proce dures shall follow AMA Class Speed 7 PropellerMay manufac ture shall restricted standard two bladed design No single bladers 8 Fuel systemNo restriction placed fuel delivery Suction type crankcase pressure type bladders allowed 9 Pull testThe airplane its control system shall withstand pull test 40 Gs 2 pounds per ounce model weight Tools materials- Since have oaly simple drawing minimum dimen sions guidance achieve some sem blance squareness finished product well have begin making some tools simplify building supplement hard ware have hand tools make follows 1 Speed pan drilling fixture described plan shown accompanying photo 2 Alignment board see photo fuselage wing tail cabinetgrade plywood approximately 3/4 x 4 x 20 finished face birch wal nut oak maple may able pur chase scrap local lumber yard 3 Sanding blocks sanding dowels made gluing rubber inner tube material suitable sanding blocks applying carpet tape sticky both sides rubber Pieces sandpaper appropri December 1988 67 Left The rear pan hold-down counterbore operation dont have counterbore bit like cant find locally $10 author will make regular drill bit Above scribe fitted through piece brass tubing rear boss used mark ref erence line grinding off front end speed pan Text has additional details Below left After line scribed onto pan ground mark using disc sander cowl block made medium-hard balsa Fostner bit used drill holes exhaust stack facing out cylinder head After will marked carving sanding its airfoil shape ate grits held place carpet tape Model cement holds sandpaper directly dowels 4 Wooden swab sticks May pur chased pharmacies TV parts stores standard tools adhesives youll need project listed end article Theres no reason cant use simple hand tools alone will pro long building time Its worth seek help someone appropriate power tools such drill press band saw disc sander lathe still school may find shop teachers willing assist cut ting shaping some parts Another source local cabinetmaker Also local hobby shop should know customers own machine tools help tough cuts model builders willing assist asked part required building materials listed below can purchased local hobby shop adver tisers magazine sheet basswood /2 x 3 x 36 fuselage crotch Two sheets basswood x 3 x 36 wing crotch top sheet soft balsa x 3 x 36 choose laminate cowl piece basswood /16 x 3 x 36 wing-and-fuselage-to-cowl spacer sheet medium-grade balsa / x 3 x 36 stabilizer piece mahogany /8 x 2 x 12 cut strips outline wing stabilizer piece %2-ID /16-tD /5-tD brass tubing piece 057-in-dia music wire Two quick-disconnect devises such flu Bro Two pushrods threaded end Class B speed pan Darp equivalent brand Steel plate /2 x 1 050 055 thick bellcrank list specialty parts suppliers in cluded end Possibly complete current information could gotten attending local CL Speed contest ask ing contestants obtain sup plies Construction begins selection engine speed pan Sport Speed model can powered 21 cu-in 35cc engine sold aircraft use Once youve chosen engine speed pan begin fitting other First order business obtain flat surface pan make suitable mounting en gine good method achieving use medium-grit sandpaper taped sheet glass turn secured work surface carpet tape flat side pan moved back forth against sandpaper until no valleys remain problem achieving squareness pan front end solved scribe grinding sketched plan Mea sure across rear hold-down boss mark center drill No 43 bit will tap 4-40 threads later Cut piece music wire 12 long grind point end make 900 bend point Cut /2-in length %2-in brass tubing drill A6 hole 900 angle tub ing length / end Slip A6 music wire hole should force fit brass tubing will now pivot No 43 hole rear hold-down boss Adjust music wire length necessary use scribe draw arc front Connect extremities arc straight line becomes ref erence grinding off pan front end Note It possible adjust length scribe fixture scribed arc will produce pan width match spinner size plan use OPS spinner fits very well Rossi 21 pan front squared off double layer masking tape provide clearance en gine mounting Set engine place pan spinner backplate just touching masking tape cheek see engine mount ing lugs flat pan use Dremel tool appropriate cutters clear away areas pan may keeping engine sitting flat posi tion mount engine start painting area pan drilled tapped either layout fluid model dope blue red thinned 50-50 Place engine pan spinner backplate just touching masking tape front pan Select drill bit just fits through mounting holes engine place pan can use drop cyanoacry late CyA glue hold insert drill through holes rotate few times make impression paint four hole centers marked place pan se curely drill jig very carefully center punch drill made its marks Using drill press No 43 bit drill four holes center-punched marks y16 deep tap 4-40 threads Make sure use sharp new tap process new get help advice point can also drill tap bosses airframe top hold-down bolts may want counterbore brass alignment tubes will fitted through fuselage later counterbore procedure extra re finement produces better fuselage align ment isnt necessary holding model together second counterbore pro cedurecountersinking screw heads low model surfaceis also optional make counterbores myself will glad others Just send drill want have ground specify de sired pilot dimension include $10 per drill address 659 Colony Rd Box 7305 Canal Fulton OH 44614 alignment fixture made flat piece cabinet-grade plywood marked centerline Make sure end board square its sides Mark centerline runs parallel same side 68 Model Aviation look underneath reveals belicrank 1Ae aluminum plate retains belicrank Also note holes %2-dia brass tubing goes align 4-40 hold-downs Rossi 21 has fitted home made adapter K&B needle valve assem bly particular pan Darp pan second set hold-downs ground away l/B CIAANRUWSARAJ LEASROT LIRNSMUSIC WIRESCRIBE ARC RITARMASR RUSE-PC MARE PAN RU MASCIR STaSILIZAR TIPSICR LANA&INSPINNER MEESMARARIAR APP PAN LUF OH BACONARTURR US BNCOAARHROaRS AR SSEARE LEARNS ROARTRAILING EDGESCRIBEjflPAN HJTLINE I/US RS AA-RAPCR SN MAUGARATLU US AMA BARNWAAR WINSI/S BEDlAMLEARNS OTNAIUNAGRINDING DETAILED RARE BALSAERASSB BU RUSE IBRAISETAI SILL AR BR HALES TRDRAMFIFROL FANSiS- F S 55MB SAW F/HaRE B STITCH WITS STUANFEUD IN PLACE WI TUREAD- MINIMUM R PLACESSEPAND ANUENNA WITS55 RUFUR ALBAS CLORN SEE TESTRBABS-PAABI0THRNLSNSE PAN DRILLING FIXTURE US SEDIUBKB-RUF-AM - HARD RALSA IS I/AANIRCUOW ID APPROXIMATE SHARI RIROR CLARITYUS PC BARRART MUSS TAP PIEROCHORUS ALL URHJSDWIDE ESAISEIHUBRO AULOX ARAR FANGS HFG U SIR PROF IW SEASUASSESS AR LAUJISATIONSTFRU MAPLE SPAR GSASARLL TDRU CHURCH RH USA REAUIDED IARTSGNLISEULCMASILL PC MATHS H-AH TAPPED SALE IS PSA P555 DRILL PSEGCA PLTWHUDUS FOX MARHUAGHSELLOXANEROaCH HUT RUIN ASER US SEEPWINS UND ANUTCU RICH DIGFINEDGING- ALL DAHUNDSED RUGSAPPUDHIGS WOMB PC CLEARFROST LEAR ANT EDLUCRUSEARANE WRLIRL BUASMAND TH FROM WRINNE RIBCR/FOX THP IRSAMRWDAR --S-AM- -- -DAB-IDGNNECPCR-rMABMA PFJMIRHBSARS&A LEAD HOT WIRE DGRPG SAGIS UCTRF lUS EDGARHUT HUT FAR/HU RS TIN TUBE RUROODI HEE EARSTABLIRERBANNED/H PLANVIEWA 5 U 5 R BARE S/AR AU SEARS RUSE ERODIEG IAWINGBOTTOMUIrtZCTH CSDRR ROSS PSASENPLUOX FHR OXLD MAURF ROLTS N EHRUNMBA\ lAB SEE RUST RB rAILSSELMA CDCRUD INTA SACRED HALES INARRE APR55 WINS ASAB IN SDCURED IS PLSOX DWB LIT BAUNWOAR BITRUUND GROG ARHUND SELLCRURD UFA LEADGUTC ALEAR-ASEE DEL ATIATIAN GAGRIST WBFU U E AGE isFUSELAGE SIDE VIEWBATE SEE COXISTUJCTIHNAROICLEflEES RHUTCH GUT INSTALL IDACHUR RUSESFIUL FOR PORT SPEED TRIMMED MAT RU ALEARTEHT ROW OXTUILS B FINISH IPOMFUGRIANAND COHER ORG WITH I/lBS TB MA BAMUANAN BRUISE OF/FL/BE AT RSISSHSD WINS RU STUMERUWAL AIRFHL CDT OXRDESIGNED BY FRED RARADELL LEHELFAN BELLERASE ADGEAM-ARE TEAT PAR SETALS TRACING BY JOE DUSIBARCO Fuselage crutch Mark centerline wood will using crutch mark perpendicular line front pan will Center pan over center line crutch trace outline pan Measure bosses pan occur leave equal amounts wood areas Draw outline bottom section engine crankcase its proper relative position Provide %2-in crutch walls around except crutch left intact engine backplate wing lead ing edge strength hold-down bosses should have least 3/3J sur rounding wall Cut sand crutch out line shape Mark both ends crutch show centerline Place crutch blank over centerline alignment fixture making sure wing side up pan side lying against board alignment pins should installed about % in crutch sides also side pan two area engine mount two area rear hold-down boss Hold crutch place couple dabs glue drill through crutch about 4 fixture No 43 bit size lets press wood swab sticks cut off about %2 above fixture surface fix ture Redrill crutch No 42 bit size large enough allow pins slip place still holding align ment Place 14in socket setscrews pre tapped hold-down bosses set screws barely extending above surface pan place crutch carefully alignment over pan press two together mark screw boles drilled Tum crutch over drill No 32 bit beauty alignment fixture other pieces wing stab cowl etc can also held temporarily place swab stick dowels Various units can re moved put back place maintain ing perfect alignment overall Also pieces can carved sanded fit ted before fully assembled Once basic parts assembled its easy matter install control unit adjust freedom movement elevator trav el before everything permanently glued place cutout alignment fix ture clears elevator once position latter crutch determined see photo Now crutch can removed replaced disturbing alignment mark inside crutch least %2-in walls leaving web between wing lead ing edge engine backplate cut straight tail centerline Saw interior outline noting side crutch rear hold-down will located remains intact op posite side pushrod will come through elevator hollowed out see top view drawing Continue sawing front around forward hold-down bosses up including previously created web inside crutch walls still left intact Drill hole center engine mounting area Working jigsaw coping saW blade through hole final shape crutch interior outline will just clear engine Note rudder added will properly aligned sides can reshaped before final assembly gluing Make wing spar shown draw ing hard maple equivalent hard wood Drill bellcrank pivot hole Continued page 164 December 1988 69 0 0 0 U 0 6 4 C 0 0 U U 0 C U 0 N C UThe lead-outs placed through bellcrank knotted secured drop solder aluminum plate tapped pivot screw glued two pieces brass tubing extend top mate counterbored holes located speed pan THE TWELFTH ANNUAL I MODEL SPORT & HOBBY SHOW STRY MEMBERS ONLY FRIDAY JAN 13198910 am -5pm GENERAL PUBLIC RDAY JANUARY 14 1989 10 am -6 pm GENERAL PUBLIC AY JANUARY 15 1989 10am 5 pm SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE L BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND S WESTI CAR TRACK ADMISSION Adults $500 under 13- $300 under 6- free adult STATIC DISPLAY COMPETITION IN MANY CATEGORIES U11 Isle] UfLU~ IsIfi ii L1gIsIsXje1 W U IsYq U]*s] F-li INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 714 548-4700 Russians using minimal style models about 38 40 wingspan Both Pitskalev Kalmykov used construction tech nique wherein rear fuselage horizontal sta bilizer built onto half-pan access pan being gained via two-part top cowl models exhibited very careful attention cooling header section tuned pipe used carbon-fiber propellers believed varying pitch eanging 60 hub 45 tip An interesting feature Kalmykovs Pitskalevs engines use threaded collar hold head insert Pitskalevs case tightened down real vengeance cylinder heads featured replaceable glow elements also using thick-walled alu minum tuned pipes large volume reaching maximum inside diameter 30mm Hungarians flying familiar set ups asymmetric outboard-sidewinder model narrow wing chord 2 long wing about 4-ft span continue use propellers having wide chord thick sec tion made maple Josef Mult Sandor Se gedi using new Mold S12 front-induc tion rear-exhaust engine resembles Rossi MK3 Hungarians placed fourth sixth 12th individual standings allowed capture second place team standings Chinese showed superb consistency just werent fast enough place top 10 Yibo Ding placed 11th speed 28125 kph followed Shizhu Sun 13th place 27692 kph Lianli Ba 16th place 27523 kph Chinese team third over standing Polish team Andrej Rachwal tenth place speed 28213 kph using modi fied Rossi engine large-volume pipe masz Rachwal son Andrej placed eighteenth speed 27273 kph Tomasz youngest contestant 15 years age enti tled him win Riga motorbike Tomasz Hoj nacld placed 23rd speed 26745 kph Polish team captured fifth place team stan dings French team Jean Magne Roland Jarry 17th 32nd places speeds 27418 25423 kph respectively United Kingdom team included Peter Halman new model completed three weeks just prior world champion ships Peter torn up regular Speed model test flying England spent en tire three weeks constructing new model Peter placed seventh overall standing speed 28549 kph using new Irvine 15 racing en gine Gordon Isles Dick McGladdeiy placed 24th 25th speeds 26745 26666 kph respectively British team captured sixth place team standings top-placing American Carl Dodge ninth place 28310 kph Jim Nightingale 15th 27650 kph John Newton 21st speed 27047 kph John Jim us ing engines made up Mold crankeases own inner parts Carl Dodges engine setup ways individual contestants oniy rear-induction engine world champs addition used glow plug instead head insert quite audience stripped engine show fellow competitors Americans fourth team standing concluding note would like congratu late contestants performances championships showed aeromodeling sport can unite competitors coun tries no matter good love tallring about model airplanes Another highiight almost forgot mention closing banquet occasion offered everyone opportunity wish good-bye swap patches goodies world cham pionships will holds fond memories meeting old friends maldng new ones next Speed column will cover some technical issues associated FAI Speed Note Tables individual team perform ances included Competition Newslet ter Section months issue RMcM Fun Speed/Randell Continued page 69 approximate position shown Wing Cut shape shown plan taking care make spar cutout close fit Glue spar place use Elmers glue Glue / x 14-in mahogany strips place shown holding lots mask ing tape until dry Groove rout wing %2-in leadout tubing tack glue tubes place Make sure have cleared away enough wood provide bellerank travel see drawing Position bellerank shown 164 Model Aviation last Ultimate Pilot Completely finished equipped poseable ready fly Pilot wwI Civ/Sport wwlI BustFull Figure 1/4 scale scale $1995$2995 19952995 19953750 Add $325 P&H per item California residents add sales tax New Black pilots available PO Box 5631 Fresno Ca 93755 209 224-4170 jj QUAY BARBER MODELS 2710R Butternut Ridge BHMIKID 611995NOrth Olmsted Ohiod4070 216 7770172 kit prices plum shipping credit cards welcome OHIO residents add 7% tax EPOXY/RLASS/POAN/RALSA CONSTRUCTION kITR DRAWOROS SEJIKIS q12nc ASS DATA FOR FORMULA 120 N SPORT OR STANDOPP SCALE PIink vets CAS S U ALL KI75 U 60 2 stroke 14 stroke Other kits COSACgUHIGH O lbx SUOESTRJO connector place short length pushrod installed Install pivot screw check freedom movement Using A6 x 3 x 36-in basswood sheet make cutout will allow access bellcrank shown accompanying photo sure cutout sheet left solid tip Glue place trim outline carve symmetrical airfoil section root tip carve wing mounts crutch Note drawing shows model set up clockwise flying Simply reverse lead-out spar positions order fly counterclockwise Stabilizer Using /8-in medium-hard balsa build stab per drawing finish 3/o-oz glass cloth Attach sta bilizer epoxy paint Tem porarily stitch elevator place secure elevator horn position shown adhere epoxy Position stabilizer centerline alignment fixture board shown put two alignment pins through stabi lizer centerline fixture center line Add Qwik Link pushrod tached havent already made cut out clear elevator now Cut pushrods length Wing-to-crutch assembly Align wing crutch centerline tack glue Drill two holes location up alignment pins flying sur faces pinned place adjust bellcrank to-elevator travel follows bellcrank neutral position elevator level cut butt ends pushrods quite meet Insert piece %2-in x -in-long brass tubing solder Minor adjustments can now made disconnecting pushrods elevator horn turning clip out Now can see just pin everything place first final drilling brass sleeves crutch wing %2 bit sleeves epoxied place through wing crutch counterbored holes pan Finish drill rear hold-down after final top piece has pinned place shaping glue build up fuselage cut out piece 4-in basswood fit around engine wing leading edge forward end crutch pin two plac es Add piece A6 basswood same manner bring top crutch level top wing Fit piece 4-in basswood between wing trailing edge end crutch cut slot fit around rudder pin place Engine cowling fashioned l4 x 1% x 5-in medium-hard balsa Determine cylinder exhaust centerline relative engines position crutch Place block vertical position check both ways Drill 1-in hole exhaust per photo making sure drill area cylinder will located Drill another hole about A2 larger cylinder diameter Draw cowl out line desire saw shape stall engine pan mount place crutch atop Position cowl reliev ing cowl block necessary fit around engine pin cowl crutch Note use option tack gluing series A-in laminations gether splitting apart after preboring cylinder exhaust holes can carve away interior steps closely match engine shape cowl crutch top pieces place wing stabilizer fuselage ready carved sand ed shape per drawing Note configuration tapers wing trail ing edge rudder enters crutch Final assembly Cut lead-outs de sired length tie tight knot end secure drop solder see photo Thread lead-out cable through holes bellcrank out through wing tip Dont finish ends yet may want pull lines back inside wing finish sand paint Assemble wing crutch stab assembly positioned alignment board check controls freedom movement make certain theres eleva tor horn pushrod clearance before glu ing everything place Double-check cowling fits properly glue Epoxy %2-in-dia brass tubes through wing crutch counterbore pan allowing some tubing pro trude above wing dry counterbore below surface hold-down screw fits flush Repeat pro cedure rear hold-down screw 3Y16-in-long x 34 -in-dia tubing just pushed place engine exhaust extension cut groove ap proximate position shown drawing no extra hold-down screws necessary secure tubing Covering finishing Sand surfaces No 220 production paper until smooth Cover entire model exception stabilizer 3/o-oz glass cloth adhere K&B polyester resin Cover small sections time overlapping cloth necessary After resin has fully cured rough sand high spots surfaces apply second coat resin thats thoroughly cured wet sand model 220-grit wet-or-dry sandpa per Apply two coats Profill Aero Craft Products 960 Brenner Ave NW Massillon OH 44646 tel 216-833-0789 wet sanding after application 400grit paper Brush Pactra Formula U final finish stitch elevator place nylon thread model ready test flown enjoyed Hope sojourn unique 166 Model Aviation List standard tools a Dremel Moto Tool assorted cutters grinders b Various numbered fractional drills indi cated drawing c Electric hand drill d Coping saw jigsaw band saw e X-Acto knife various blades f White glue cyanoacrylate glue CyA CyA debonder g An assortment wood files whatever fits hand h 4-40 tap No 43 drill bit Speed pan suppliers Nick Arpino 301 Woodacres Rd East Patchogue NY 11772 Des MeAnelly 47 Norwood St Invercar gill New Zealand Herbs Speed & Racing 1621 M St Mer ced CA 95340 responding advertisers mention read about ModeIAviatiOfl salt publications great drawings Ken has included can read getring excited should turn Captain Mid night Secret Decoder Badge order catalog send two clams OTMS PO Box 7334 Van Nuys CA 91409 Support cottage industries Al Lidbergs latest Rubber Scale plan has some features make super transition modeler has built few kit models ready step up something really classy Its 1940 Napier-Heston JA-5 racer spans about 32 things make exciting fact done-to-death military sub ject fellow modelers just sort ignore its brought field Instead has nice fat streamlined fuselage big spin ner lots room rubber Thrust adjust ments center-of-gravity actually shown plan lack plans makes wonder designer ever flew prototype Theres also knock-off wing mount ing system similar showed photo Tayloreraft/Auster March 1988 column shortened up wire stubs make truly knock-offable whereas prefer use longer stubs bend back bit ab sorb shock actually coming off can start longer trim em down fly until get what works best Als building trimming booklet has some nice hints too plan booklet come catalog $6 AA Lidberg 614 E Ford ham Tempe AZ 85283 Hi-Line Ltd PO Box 341283 Bethesda MD 20817 newest company exploding Mini-Electric field best company has kept costs modeler down providing do-it-yourself kits buyer gets two motors materials re wind armatures build gear-drive freewheeling Hooking up everything requires using no common pencil-type solder ing iron ability follow step-by-step instructions charger kit Ni-Cd batteries also avail able MEK-1 dual-motor kit features high-quality carbon-brushed motor made Kodak disc-drive cameraa thing have purchased surplus sales outfits have known what Hi-Line has engineered hopped-up motor has provided gears wire make work aeroplanes instead cameras tiny six-watt darlings just things need multiengined craft having wingspans ranging mid-twenties fortyish range 461 gear-down turns 5-12-indiameter Williams Bros CO2 plastic prop avail able Peck-Polymers 4500 rpm setup using motor its battery weighs 1518 oz motors powering Nats winning single- multiengine Scale ships Don Srull Dave Rees great success Drop Hi-Line letter request informa tion sure include large SASE Idiot-sheet judging versus Mooney judging Back Sixties Flightmasters Los An geles CA sparked Hal Osborne got gether idiot sheet use judging rubberpowered Scale models ended up getting adopted official AMA standard class meeting attended top Scale modelers time idea brought up over over official AMA rules should protect Joe Doe out Pudunk IA arbitrary decisions part Scale judge goal set up series categories based various parts plane give cer Continued page 173 THEM FDPil1~ ~to] o]ANY WAY YOU ADDS UP TO BETTER PERFORMANCE N YROD THE ORIGINAL 1QeuhQc PUSH ROD COMPLETE WITH ALL REQUIRED METAL____________________________________ FITTINGS IDEALLY SUITED FOR ANY PUSH ROD ACTION RUDDERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED 1 CONTROL BOATS SEA PLANES YOUR14 NYRODapterit4C f. IMAGINATION1-8 Rod 2-56 Threaded end 9 34 LONG ASSEMBLED LENGTHCat NYROD SM-PR-LINE PROOUCTS INC 16800 Stats Route 47 E Sid OhIo 45365 PIt 513 496-1721 BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ot receiver battery status press 01 button Precise Rugged Small Light 1/2 oz Made SA Also custom units br other applications Order Today $1495 trom dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1808 Poughkeepsle NY 12601 INY State residents add sales tasi 168 Model Aviation building methods Control Line Speed has proven interesting Return visits in- FF Scale/V/amer vitedContinued page 71 I