Bristol Scout Model D

Many fine finlsn peigmus can p seen mis view anne completed model caught very realistic pose construction drawings forthe model presented last monthsee page 128 price ordering form real-life look dummy pilot must Last month author took us through design considerations general constructing fuselage concludes wing tail surfaces controls rigging flying model suitable RC Precision Scale Sport Scale Giant Scale90-size engine ideal Part 20 Hank lltzsch FABRICATE elevator rudder hinges made up silver-soldering two sizes brass tubing together -in -in outside diameter OD rudder -in 5/16-in elevator After soldering cut off slices make two hinge pieces filing cutting fit See plan dimensions Use short pieces inside Nyrod hinge pins inserting small brad down center hole lock place Construct stabilizer elevator rudder assemblies including rudder post hinges must placed dowels hinge lines stab rudder before proceeding construction Leave loosealign epoxy Hot Stuff place later Fabricate install elevator rudder horns per positions plans Fit stab assembly fuselage aligning carefully drill out 4-40 blind nuts front mounts -in dowel centering guides well 2-56 rear stud arrangement provides adding positive inci dence stab required per full-scale arrangement well secure stab mount also allows easy removal needed Cowl front end cowl made up base piece consisting two rings 42 Model Aviation Hank lltzsch Bristol Scout Model 0 shot Ernst Mausolf others bythe author An early shot nearly finisneu moocH uclals sucn gummy engine cocipix inTerior gnu other small items hadnt added See reference listing st end article square spruce cross pieces Note front ring slightly larger rear ring gives slight taper cowl point often missed plane Wrap piece 1/32 ply around between rings butting against front ring covering rear ring will leave small lip front ring Sand off excess ply covering rear fit firewall #4 x -in sheet-metal screws indicated mounting points Add balsa pieces around perimeter cowl grain running fore aft Use -in about 1-in pieces dry fill between pieces favorite filler sand taper front ring front fuselage Use about -in wide strips 1/32-in ply around rear perimeter cowl firewall simulates mating flange Sand slightly rounded shape fairs smoothly Next make up concentric rings -in balsa pine up task sanding shape want ding-free cowl Add rings front main cowl base sand shape completed satisfaction coat whole cowl polyester sanding resin Two three coats should about right Sand smooth outside between coats finish off wet-or-dry 400 use wet final finish will give light durable fuel-proof cowling easy removal access engine needed Use same resin sanding technique ply front covering ready finish parts spray two coats acrylic auto primer several coats Aerogloss Silvaire Aluminum dope sanded #400 between coats finish coat flat urethane varnish may added increase fuel resistance finish can now make up engine mounting plate fit between engine bearer beams Cut out fit engine putting 30 right thrust mount Make up battery box Coat epoxy resin bolt bottom engine bearer beams later did make up Scale construction used original wings overly difficult esthetically pleasing surprisingly light Exact scale airfoil shown naught explained last month Part 1 April 1981 43 CWOIden Coveriteit taKes rgur rollsnas sucn oeauty tnat hard think hiding Alignments fits cable runs control action must right before finishing Minor misalignments difficult correct later Enough pieces shown picture monoplanebut theres done since bipe 0~e-to-scale Long stab hinge pin piece inner Nyrod temporary Final installation uses short pieces Upper wings original scale construction snowing atxacnmenxs center section proper center section important affects flying surface alignmentsnot difficult just takes little time box ears along sides fit aluminum channels engine bearers allows battery box taken out readily batteries intact inspection charging etc space between bottom engine plate battery box place put lead needed balance Incidentally used two 550 mAh packs side-by-side hooked up through Y yoke back switch gives low profile compact arrangement reserve battery power desirable plane size drawback packs must charged individually through usual charging jack switch circuit Install servos fuel tank linkages lines fuselage control cables use 20-lb test nylon fishing line temporary installation order check control alignments etc permanent control cables installed use nylon-covered wire cable such available Proctor Use heavy duty final installation control cables after the covering finishing completed can check temporary cables place whether exit points cables fuselage sides points indicated plans make note differences holes will have cut later fabric covering accommodate lines Precise measuring points time will eliminate much fuss needless patching later Wing construction Cut out ribs after deciding type construction use scale ribs 1/32 ply used convenient set up some sort ofajig hold cap-strips place hold web piece place 1/32-in off board gluing up Cut maln spars length taper tip ends shown String ribs onto spars locate over plan hold position glue prefer use DuPont Duco cement something learned building Lou Proctors kits Add leading edges trailing edges trail ing edge gussets ailerons made cutting out later build solid wing Glue tips epoxy formed aluminum used drill 1/16-in holes points contact spars fill epoxy glued up will give strong bond epoxy does otherwise hold well aluminum Add balsa fillers aileron sections Cut out add aileron front piece glue together Add packing spars top bottom bend together glue tips Remove wing building board sand aileron section shape tapering tips sand leading edge shape Cut ailerons off trailing edge wing tip After sanding rough spots add hinges temporarily Put bellcrank bases bellcranks rods wires upper wings Check smooth operation Next add aileron rod fabric supports keeping level surface ribs Construct wing center section complete wing mount stub fittings cabane attach ment fittings Fit wing center section cabanes Drill through mounting holes 3/32-in drill mount 2-56 bolts Rig cabane braces per drawing using Proctor rigging wire Proctor #3c turnbuckles phase rigging can done temporary basis time done permanently later con venient time construction after finishing must done right however real strength center section just full-scale prototype Fit wings fuselage wing center section stubs can either use temporary juryContinued page 116 44 Model Aviation No instruments yet lots rivets lacing eyes Left-side wind shield placement typical particular prototypes serial number Placement windshield pilot option Good shot front end treatment Note exit pointb es just aft cowl Cabane cross bracing clearly shown Go ahead climb cockpit way pilots seat can pluck flying wires check proper adjustment Look carefully aft section modeltur AI1 poEms rue control cables rudder hinge tail skid Big stabilizer makes good flying model Has around 340 sq area Note scale hing ing system front stab hold-downs THE RISING STAR IN GIANT SCALE ENGINES 4q% 4 K K K K K K K 0 Sealed Points 4 W~PAYSUPRNG ON PRE-PAID ORDER K* K** K K ** K ** Exhaust Manifold Velocity Stack Kits Available * * * * Dealer Inquiries * * Welcome ROUSH MFG P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT a. u1- 44U 2264625 WE BUY OR TMtE OW ENGINES ANt KITS STOP PROP BRAKESWEVE EXPANOEOI ATD Brake Kit no 101 $275SCALE DRAWINGSPHOTOS BOOKLETS FAI CABBrake Kit no 102 $325 BcBrake Kit no 103$375 1 ea size $8503 FAI size $850 used Kit no 102 PA Residents Add 6% Sales TaxREPLA-TECH -INrERNAToNAL K&W ENTERPR ISES 7824 Lexington AveCATALOGS $20048500 MO 5NZ5 Philadelphia Penna 19152VCA 058005 8498 therefore used transmit Collective pitch Commands rotor head Instead either pushrod running inside hollow shaft wire rod running slot along outer diameter main shaft used Helicopters both cyclic collective pitch available mixed Kavan Jet Ranger see Sketch 2 might recognize example Heliboy beginner head Later Sketch 3 shows mixers added make system comparable Sketch 1 exceptionno other linkage required pre vent collective pitch changes servo rotor since seperate cyclic collective linkages already used So see both direct control servo rotor control may applied main blades little mixer usually set majority authority servo rotor remember Larry Axelson reversed mixer ratio see February column Larry felt shortened flybar Heliboy sluggish slow follow rate mixer change brought things back line thats end line See next month Dave Chesney Rt 9 Box 62 IA Greensboro NC 27409 Bristol Scout/Iltzsch Continued page 44 rigged interplane struts time go ahead cut shape finished interplanes closely possible stub fitting drill through carefully centered the stub area 5/64-in drill Remove wings drill out spar stub ends 7/64-in clear 4-40 bolts Tap 4-40 threads copper wing center section fuselage stubs Put wings 24 cu inch 32 HP BON RPM 6A lbs 3 Ring Pisten Ball Bearings Crank back insert 4-40 x -in bolts through point Fit requiredso wing stubs go out bolt goes through tightens difficulty Control system following description control system general should help clear up some slightly nebulous points various constructions relating control functions Rudderpushrod servo rudder pedal use ball socket links best Locate link rudder pedal close possible point connection control cable otherwise differential rudder will result Run cables rudder pedal under seat Nyrod-covered bearing bar back rudder horns elevator wires run servo arm side arm under bearing bar lower ones run out side fuselage exit points noted plan lower end elevator horn upper cables after leaving bearing bar run over small pulleys Proctor top fuselage top elevator horns small tumbuckle upper cables adjustment per full-scale also desirable have some sort adjustable clevis side servo output arm should give needed adjustment trimming elevators Du-Bro # ill threaded coupler clevis clip will job alleron controls consist bellcrank assembly amidship shown plan Run pushrod side long servo arm side long arms center bellcrank Make up short rods connected short ends bellcrank using ball socket connections out through fuselage side about -in eye formed outside fuselage eyes connected eye-end rods running lower wing aileron bellcranks 2-56 bolts lock nuts top wing cable connects two top aileron bellcranks hook disconnect under center wing center section upper lower allerons con nected cable small tumbuckle bottom end will give some adjustment needed balance ailerons Remember aileron circuit runs contin uous circle example right torn command will pull left aileron down connected upper aileron will also pull down through wire connection upper bellcranks will ralse upper right aileron turn pulls up lower aileron type rigging quite reliable also allows disconnec tion removal wings pairs upsetting fixed rigging parameters Rigging may carried out either before after painting wings Probably best done before dismantled painted final-rigged later Rigging critical take time follow directions listed hereafter should have no difficulty Remember wings stay rigged pairs Field assembly consists plugging wing stubs fixing place 4-40 x -in bolts connecting upper aileron wires affixing drag lines Assemble strut rigging fittings points wings Use Proctor fittings make up own desired flying wires double landing wires single Use Proctor #3C turnbuckles points indicated scale size confirmed factory drawings rigging recommend use Proctor heavy duty rigging wire next step set fuselage level position have incidence gauge highly recommended wing center section should 116 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORE CAR RE DORE EV Rouse RIFE OR CT YOUR NEAREST ECRO-EIORITZ PRODUCTS DEALER 4$ 4 PLANES E Erwin Rd BOATS lex 227 CARS - wwart osuoi TRAINS give 20 positive incidence stab 00 correct now foundation rigging Install wing stub fittings fuselage cabanes bolt place Block up lower wings have 30 dihedral 2o positive incidence Fit interplane struts carefully upper wings show same dihedral incidence lower wings Drill holes through struts fittings bolt using Proctor #210 bolts equivalent move plane blocks during time will need start over again recheck point Next install interplane strut bracing wires landing flying wires semi-tight Check dihedral inci dence adjust gradually turnbuckles until wires tight incidence dihedral specs correct Properly done wings now permanently rigged tumbuckles safety-wired place can removed transported further checks Plan spend two three evenings phase Install drag wires used light springs side firewall connect give slight tension wires exit through side cowl connected upper lower rear interplane strut fittings convenient con nector can made small swivel snaps used end fishing lines parts rigging taken off disassembly Tension critical just keep reasonably taut Finishing touches Covering can now done used Super Coverite gives good fabric look tough can painted very few coats Bring covering fuselage right up lips front decking cowling edges Study pictures plane copying get correct access hatches rivet detail other small important items detail make 100-hp Monosoupape-powered version sure put cowl bulge right side models ones equipped other cowls smooth Rivets can made -in-head escutch eon nails Lacing eyes about 1/16-in dia meter use pins size head stagger lacing per plan detail Color scheme course will determined plane being duplicated Refer publications listed bibliography end article various color schemes cockpit surround made up beading thin leather piece clothesline rope laminated fold turn cemented stitched around cockpit opening dummy engine can made Williams Bros 3-in-scale LeRhone cylinders Wheels proper size 6-in dia can obtained Lou Perretti originals Williams Bros Flying After plane sorted out per formed very well indeed As WW model flying strong winds difficult best plane can handle moderate winds no difficulty Initial flights can made cowl enable make proper engine adjustments etc sure add equivalent weight cowl form lead whatever conveni ent front testing way After cowl added back plane cleaner will fly better due less frontal drag found takeoff easiest add upelevator trim prevents tail lifting too high before takeoff speed attained tends put plane over its nose un graceful fashion tail comes up rather quickly r IvI-U DU-BRO HEAVY DUTY HINGES o With L}Fj~Q Removable o o 0 Cotter Pin 000 Shown actual size o 0 0strong nylon hinges built take heavy loads Dimen sions 3/4 wide x 1318 long x 040 thick using 3/64 diameter cotter pin maximum convenience strength Ideal 1/4 scale models 15 Per Pkg 375No 257 E-Z CONNECTORS 98 Pr SNAP ON -Or PEEN ON Ii WE HAVE INCLUDED IN EVERY PACKAGE OF EZ CONNECTORS 2 OF OUR NEW NYLON SNAPONS ESPECIALLY MADE TO HOLD TIGHT ON ANY SIZE CONTROL ARM THESE NEW SNAP-ONS CAN SAFELY BE USED OVER AND OVER AGAIN FOR THOSE OF YOU WHO STILL PREFER PERMANENT INSTALLATION JUST PEEN ON THE WASHER AS BEFORE YOUR CHOICECat No 121 THE FINAL FILTER ONLY 11/4 LONG FILTERS IN EITHER DIRECTION CLEAN BY BACK FLUSHING Ultimate in-line fuel filter twice much fuel filtering capacity filters now available extremely fine 130 micron polyester screen filters Out smallest particles yet because large filtering area does restrict fuel flow Proven 20% better wire screen equivalents classy looking aluminum filter should used between engine tank fuel can lineACTUAL SIZE CAT NO 162 ONLY $175 DU-BRO 20 FLEX-CABLEc MOTOR CONTROL Provides ultimate control cable assembly Highly-BOATS. CARS flexible free running adjuslable control horn KWIK SWITCH MOUNT simplest fastest easiest way mount battery switch complete switch mounting set enables install battery switch minutes anywhere fuselage drilling 3/16 hole! Excellent use planes helicopters boats cars Designed fit wall thickness up 3/8 0e DU-BRO PRODUCTS INCORPORATED Banner Road Wauconda Illinois 60084 USA April 1981 117 TWENTY- SEVENTH ANNUAL ULEO RADIO CONTROL EXPOSITION 1 4 w A0 0 TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 1011 121981 FRI DAY SATURDAY SUNDAY presented 9am 9 am 9am to 6 pm 6 pm 430 pm WEAK SIGNALS po box 5772 R/C CLUB toledo ohio 43613 let plane run out gain good flying speed gradually give up elevator Some slight rudder correction will needed tracking much problem long keep nose directly wind Under low-wind con ditions plane will take off itself no matter long ground run adding up elevator After lift-off let climb out remov ing up-elevator trim Get some altitude before turning Turns can made ailerons alone coordinated rudder ailerons just rudder type turn bit different feel out plane see like best various maneuvers things happen slowly no matter what command Scale flight what get plane nothing prettier low slow fly-by big baby Landings should cause no problem Set up far enough Out throttle back idle begin descent sinks too fast give some gentle throttle adjust Let settle onto field its own pace begin final flare-out about 3-4 ft off deck full up-elevator set-down Punch throttle hold full up-elevator looks like wants nose over Let roll out bit taxi hangar Ground handling too bad skid-equipped tail-dragger dirt grass Anyone willing tackle plane will duly rewarded both challenge building fun showmanship get flying large vintage biplane should follow hours exciting enjoyable flying competition-oriented plane done right should very competitive either AMA Precision Scale Sport Scale Giant Scale point would like extend thanks number individuals plane article would have possible Firstly thanks draftsman Brian Voyer did basic drawings Seekonk High School drafting class under able guid ance Bruce Downing assistance field also helpful Though competent beginning flier written hoped can get him far enough along able use drafting talents model own conception thanks Leo Opdycke generous advice information constructive criticism plane would what [ou Perretti thanks periodic advice steering area WW Quarter Scale gratitude extended friends flying companions South Shore Radio Control Club saw through IN STOCK FOR IMMEDIATE SHIPMENT trying times encouragement appreciation helped keep motivated Lastly wonderful wife endured hours apart knowing drifted back time 1916 hoping would return References 1 Profile Publications# 139 Bristol Scouts C & D 2 BristolAircraft Since 1910C H Barnes 3 British Aeroplanes 1914-1918J M Bruce 4 ModelAirplane NewsJune 1978 5 AjipowerNovember 1975 6 World War Aeroplanes #58August 1976 #65November 1977 15 Crescent Rd Poughkeepsie NY 12601 CL Scale/Byron Continued page 47 evenings browsing stores bookshops other place appears interesting looking airplane information love Scale modeler must have enjoy hobby fullest Once have decided type aircraft wish build must weigh several different factors before final determination can made whether build model have mind start order have docu mentation necessary build model must remember Sport Scale three-view mandatory want receive points aircraft outline must also have color documentation receive color markings points can done several different ways could furnish black-and-white line drawing color chips requirement however have found Profile Publications type material well accepted quite adequate competition Sport Scale event observation Scale judges will actually judge model relationship documentation presented though possibility docu mentations coloring may duplicate origi nal colors aircraft So case Sport Scale suggest keeping mind duplicate colors see rather duplicating what supposed unless course devout purist wishes know own mind color documentation correct just human factor have observed last several years deciding museum-quality Scale airplane extremely difficult build actually having airplane disposal always case always possible build airplane wish because lack 118 Model Aviation Epoxy GI. Cowl NOSEN HOSTETLER PICA BALSA USA PLATF- CONCEPT FLEET SID MORGAN- RCM T CRAFT BYRON/SHEBER PuTS FOLKER D7 BOEING P-26&F4-B4 -GEE BEE MODY KRAFT SUPER FLY &4 SCALE AND OTHERS Send S ASE Complete List T&D FIBERGlASS SPECIALTIES 30925 Block Garden City Ml 48135 Phi 3]3 6358 ATTENTION ERS New SUPER QUADRA S8995 BRISIGHELLA FLYWHEEL $10795 QUADRA REPAIR$1000 s KIORITZ engine 244 cuin$18995 Jim Messers ERCOUPE KIT$21995 Jim Messers TOMAHAWK KIT$23995 Concepts BIG FLEET KIT$17995 P&W RADIAL ENGINES Fleet $2995 FIBERGLASS COWL Fleet $1995 BALSA & BASSWOOD sizes 40% OFF 1/4 SCALE plans QUADRA ERCOUPE TOMAHAWK SKYBOLT $2195 SUPER STEARMAN Godfrey$2495 STARDUSTER TOO ighella $2995 COCKPIT KITS Ercoupe T-Hawk $1500 Stearman Fleet F4U J-3 Cub$1850 ME-109 $1950 Citabria Nosen $2495 24-Hour Seice. Add $250 postage Send Bank Check Money Order JIM MESSERS QUALITY MODEL PRODUCTS ________________________________106 Valley View DrAllegany NY 14706

Many fine finlsn peigmus can p seen mis view anne completed model caught very realistic pose construction drawings forthe model presented last monthsee page 128 price ordering form real-life look dummy pilot must Last month author took us through design considerations general constructing fuselage concludes wing tail surfaces controls rigging flying model suitable RC Precision Scale Sport Scale Giant Scale90-size engine ideal Part 20 Hank lltzsch FABRICATE elevator rudder hinges made up silver-soldering two sizes brass tubing together -in -in outside diameter OD rudder -in 5/16-in elevator After soldering cut off slices make two hinge pieces filing cutting fit See plan dimensions Use short pieces inside Nyrod hinge pins inserting small brad down center hole lock place Construct stabilizer elevator rudder assemblies including rudder post hinges must placed dowels hinge lines stab rudder before proceeding construction Leave loosealign epoxy Hot Stuff place later Fabricate install elevator rudder horns per positions plans Fit stab assembly fuselage aligning carefully drill out 4-40 blind nuts front mounts -in dowel centering guides well 2-56 rear stud arrangement provides adding positive inci dence stab required per full-scale arrangement well secure stab mount also allows easy removal needed Cowl front end cowl made up base piece consisting two rings 42 Model Aviation Hank lltzsch Bristol Scout Model 0 shot Ernst Mausolf others bythe author An early shot nearly finisneu moocH uclals sucn gummy engine cocipix inTerior gnu other small items hadnt added See reference listing st end article square spruce cross pieces Note front ring slightly larger rear ring gives slight taper cowl point often missed plane Wrap piece 1/32 ply around between rings butting against front ring covering rear ring will leave small lip front ring Sand off excess ply covering rear fit firewall #4 x -in sheet-metal screws indicated mounting points Add balsa pieces around perimeter cowl grain running fore aft Use -in about 1-in pieces dry fill between pieces favorite filler sand taper front ring front fuselage Use about -in wide strips 1/32-in ply around rear perimeter cowl firewall simulates mating flange Sand slightly rounded shape fairs smoothly Next make up concentric rings -in balsa pine up task sanding shape want ding-free cowl Add rings front main cowl base sand shape completed satisfaction coat whole cowl polyester sanding resin Two three coats should about right Sand smooth outside between coats finish off wet-or-dry 400 use wet final finish will give light durable fuel-proof cowling easy removal access engine needed Use same resin sanding technique ply front covering ready finish parts spray two coats acrylic auto primer several coats Aerogloss Silvaire Aluminum dope sanded #400 between coats finish coat flat urethane varnish may added increase fuel resistance finish can now make up engine mounting plate fit between engine bearer beams Cut out fit engine putting 30 right thrust mount Make up battery box Coat epoxy resin bolt bottom engine bearer beams later did make up Scale construction used original wings overly difficult esthetically pleasing surprisingly light Exact scale airfoil shown naught explained last month Part 1 April 1981 43 CWOIden Coveriteit taKes rgur rollsnas sucn oeauty tnat hard think hiding Alignments fits cable runs control action must right before finishing Minor misalignments difficult correct later Enough pieces shown picture monoplanebut theres done since bipe 0~e-to-scale Long stab hinge pin piece inner Nyrod temporary Final installation uses short pieces Upper wings original scale construction snowing atxacnmenxs center section proper center section important affects flying surface alignmentsnot difficult just takes little time box ears along sides fit aluminum channels engine bearers allows battery box taken out readily batteries intact inspection charging etc space between bottom engine plate battery box place put lead needed balance Incidentally used two 550 mAh packs side-by-side hooked up through Y yoke back switch gives low profile compact arrangement reserve battery power desirable plane size drawback packs must charged individually through usual charging jack switch circuit Install servos fuel tank linkages lines fuselage control cables use 20-lb test nylon fishing line temporary installation order check control alignments etc permanent control cables installed use nylon-covered wire cable such available Proctor Use heavy duty final installation control cables after the covering finishing completed can check temporary cables place whether exit points cables fuselage sides points indicated plans make note differences holes will have cut later fabric covering accommodate lines Precise measuring points time will eliminate much fuss needless patching later Wing construction Cut out ribs after deciding type construction use scale ribs 1/32 ply used convenient set up some sort ofajig hold cap-strips place hold web piece place 1/32-in off board gluing up Cut maln spars length taper tip ends shown String ribs onto spars locate over plan hold position glue prefer use DuPont Duco cement something learned building Lou Proctors kits Add leading edges trailing edges trail ing edge gussets ailerons made cutting out later build solid wing Glue tips epoxy formed aluminum used drill 1/16-in holes points contact spars fill epoxy glued up will give strong bond epoxy does otherwise hold well aluminum Add balsa fillers aileron sections Cut out add aileron front piece glue together Add packing spars top bottom bend together glue tips Remove wing building board sand aileron section shape tapering tips sand leading edge shape Cut ailerons off trailing edge wing tip After sanding rough spots add hinges temporarily Put bellcrank bases bellcranks rods wires upper wings Check smooth operation Next add aileron rod fabric supports keeping level surface ribs Construct wing center section complete wing mount stub fittings cabane attach ment fittings Fit wing center section cabanes Drill through mounting holes 3/32-in drill mount 2-56 bolts Rig cabane braces per drawing using Proctor rigging wire Proctor #3c turnbuckles phase rigging can done temporary basis time done permanently later con venient time construction after finishing must done right however real strength center section just full-scale prototype Fit wings fuselage wing center section stubs can either use temporary juryContinued page 116 44 Model Aviation No instruments yet lots rivets lacing eyes Left-side wind shield placement typical particular prototypes serial number Placement windshield pilot option Good shot front end treatment Note exit pointb es just aft cowl Cabane cross bracing clearly shown Go ahead climb cockpit way pilots seat can pluck flying wires check proper adjustment Look carefully aft section modeltur AI1 poEms rue control cables rudder hinge tail skid Big stabilizer makes good flying model Has around 340 sq area Note scale hing ing system front stab hold-downs THE RISING STAR IN GIANT SCALE ENGINES 4q% 4 K K K K K K K 0 Sealed Points 4 W~PAYSUPRNG ON PRE-PAID ORDER K* K** K K ** K ** Exhaust Manifold Velocity Stack Kits Available * * * * Dealer Inquiries * * Welcome ROUSH MFG P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT a. u1- 44U 2264625 WE BUY OR TMtE OW ENGINES ANt KITS STOP PROP BRAKESWEVE EXPANOEOI ATD Brake Kit no 101 $275SCALE DRAWINGSPHOTOS BOOKLETS FAI CABBrake Kit no 102 $325 BcBrake Kit no 103$375 1 ea size $8503 FAI size $850 used Kit no 102 PA Residents Add 6% Sales TaxREPLA-TECH -INrERNAToNAL K&W ENTERPR ISES 7824 Lexington AveCATALOGS $20048500 MO 5NZ5 Philadelphia Penna 19152VCA 058005 8498 therefore used transmit Collective pitch Commands rotor head Instead either pushrod running inside hollow shaft wire rod running slot along outer diameter main shaft used Helicopters both cyclic collective pitch available mixed Kavan Jet Ranger see Sketch 2 might recognize example Heliboy beginner head Later Sketch 3 shows mixers added make system comparable Sketch 1 exceptionno other linkage required pre vent collective pitch changes servo rotor since seperate cyclic collective linkages already used So see both direct control servo rotor control may applied main blades little mixer usually set majority authority servo rotor remember Larry Axelson reversed mixer ratio see February column Larry felt shortened flybar Heliboy sluggish slow follow rate mixer change brought things back line thats end line See next month Dave Chesney Rt 9 Box 62 IA Greensboro NC 27409 Bristol Scout/Iltzsch Continued page 44 rigged interplane struts time go ahead cut shape finished interplanes closely possible stub fitting drill through carefully centered the stub area 5/64-in drill Remove wings drill out spar stub ends 7/64-in clear 4-40 bolts Tap 4-40 threads copper wing center section fuselage stubs Put wings 24 cu inch 32 HP BON RPM 6A lbs 3 Ring Pisten Ball Bearings Crank back insert 4-40 x -in bolts through point Fit requiredso wing stubs go out bolt goes through tightens difficulty Control system following description control system general should help clear up some slightly nebulous points various constructions relating control functions Rudderpushrod servo rudder pedal use ball socket links best Locate link rudder pedal close possible point connection control cable otherwise differential rudder will result Run cables rudder pedal under seat Nyrod-covered bearing bar back rudder horns elevator wires run servo arm side arm under bearing bar lower ones run out side fuselage exit points noted plan lower end elevator horn upper cables after leaving bearing bar run over small pulleys Proctor top fuselage top elevator horns small tumbuckle upper cables adjustment per full-scale also desirable have some sort adjustable clevis side servo output arm should give needed adjustment trimming elevators Du-Bro # ill threaded coupler clevis clip will job alleron controls consist bellcrank assembly amidship shown plan Run pushrod side long servo arm side long arms center bellcrank Make up short rods connected short ends bellcrank using ball socket connections out through fuselage side about -in eye formed outside fuselage eyes connected eye-end rods running lower wing aileron bellcranks 2-56 bolts lock nuts top wing cable connects two top aileron bellcranks hook disconnect under center wing center section upper lower allerons con nected cable small tumbuckle bottom end will give some adjustment needed balance ailerons Remember aileron circuit runs contin uous circle example right torn command will pull left aileron down connected upper aileron will also pull down through wire connection upper bellcranks will ralse upper right aileron turn pulls up lower aileron type rigging quite reliable also allows disconnec tion removal wings pairs upsetting fixed rigging parameters Rigging may carried out either before after painting wings Probably best done before dismantled painted final-rigged later Rigging critical take time follow directions listed hereafter should have no difficulty Remember wings stay rigged pairs Field assembly consists plugging wing stubs fixing place 4-40 x -in bolts connecting upper aileron wires affixing drag lines Assemble strut rigging fittings points wings Use Proctor fittings make up own desired flying wires double landing wires single Use Proctor #3C turnbuckles points indicated scale size confirmed factory drawings rigging recommend use Proctor heavy duty rigging wire next step set fuselage level position have incidence gauge highly recommended wing center section should 116 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORE CAR RE DORE EV Rouse RIFE OR CT YOUR NEAREST ECRO-EIORITZ PRODUCTS DEALER 4$ 4 PLANES E Erwin Rd BOATS lex 227 CARS - wwart osuoi TRAINS give 20 positive incidence stab 00 correct now foundation rigging Install wing stub fittings fuselage cabanes bolt place Block up lower wings have 30 dihedral 2o positive incidence Fit interplane struts carefully upper wings show same dihedral incidence lower wings Drill holes through struts fittings bolt using Proctor #210 bolts equivalent move plane blocks during time will need start over again recheck point Next install interplane strut bracing wires landing flying wires semi-tight Check dihedral inci dence adjust gradually turnbuckles until wires tight incidence dihedral specs correct Properly done wings now permanently rigged tumbuckles safety-wired place can removed transported further checks Plan spend two three evenings phase Install drag wires used light springs side firewall connect give slight tension wires exit through side cowl connected upper lower rear interplane strut fittings convenient con nector can made small swivel snaps used end fishing lines parts rigging taken off disassembly Tension critical just keep reasonably taut Finishing touches Covering can now done used Super Coverite gives good fabric look tough can painted very few coats Bring covering fuselage right up lips front decking cowling edges Study pictures plane copying get correct access hatches rivet detail other small important items detail make 100-hp Monosoupape-powered version sure put cowl bulge right side models ones equipped other cowls smooth Rivets can made -in-head escutch eon nails Lacing eyes about 1/16-in dia meter use pins size head stagger lacing per plan detail Color scheme course will determined plane being duplicated Refer publications listed bibliography end article various color schemes cockpit surround made up beading thin leather piece clothesline rope laminated fold turn cemented stitched around cockpit opening dummy engine can made Williams Bros 3-in-scale LeRhone cylinders Wheels proper size 6-in dia can obtained Lou Perretti originals Williams Bros Flying After plane sorted out per formed very well indeed As WW model flying strong winds difficult best plane can handle moderate winds no difficulty Initial flights can made cowl enable make proper engine adjustments etc sure add equivalent weight cowl form lead whatever conveni ent front testing way After cowl added back plane cleaner will fly better due less frontal drag found takeoff easiest add upelevator trim prevents tail lifting too high before takeoff speed attained tends put plane over its nose un graceful fashion tail comes up rather quickly r IvI-U DU-BRO HEAVY DUTY HINGES o With L}Fj~Q Removable o o 0 Cotter Pin 000 Shown actual size o 0 0strong nylon hinges built take heavy loads Dimen sions 3/4 wide x 1318 long x 040 thick using 3/64 diameter cotter pin maximum convenience strength Ideal 1/4 scale models 15 Per Pkg 375No 257 E-Z CONNECTORS 98 Pr SNAP ON -Or PEEN ON Ii WE HAVE INCLUDED IN EVERY PACKAGE OF EZ CONNECTORS 2 OF OUR NEW NYLON SNAPONS ESPECIALLY MADE TO HOLD TIGHT ON ANY SIZE CONTROL ARM THESE NEW SNAP-ONS CAN SAFELY BE USED OVER AND OVER AGAIN FOR THOSE OF YOU WHO STILL PREFER PERMANENT INSTALLATION JUST PEEN ON THE WASHER AS BEFORE YOUR CHOICECat No 121 THE FINAL FILTER ONLY 11/4 LONG FILTERS IN EITHER DIRECTION CLEAN BY BACK FLUSHING Ultimate in-line fuel filter twice much fuel filtering capacity filters now available extremely fine 130 micron polyester screen filters Out smallest particles yet because large filtering area does restrict fuel flow Proven 20% better wire screen equivalents classy looking aluminum filter should used between engine tank fuel can lineACTUAL SIZE CAT NO 162 ONLY $175 DU-BRO 20 FLEX-CABLEc MOTOR CONTROL Provides ultimate control cable assembly Highly-BOATS. CARS flexible free running adjuslable control horn KWIK SWITCH MOUNT simplest fastest easiest way mount battery switch complete switch mounting set enables install battery switch minutes anywhere fuselage drilling 3/16 hole! Excellent use planes helicopters boats cars Designed fit wall thickness up 3/8 0e DU-BRO PRODUCTS INCORPORATED Banner Road Wauconda Illinois 60084 USA April 1981 117 TWENTY- SEVENTH ANNUAL ULEO RADIO CONTROL EXPOSITION 1 4 w A0 0 TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 1011 121981 FRI DAY SATURDAY SUNDAY presented 9am 9 am 9am to 6 pm 6 pm 430 pm WEAK SIGNALS po box 5772 R/C CLUB toledo ohio 43613 let plane run out gain good flying speed gradually give up elevator Some slight rudder correction will needed tracking much problem long keep nose directly wind Under low-wind con ditions plane will take off itself no matter long ground run adding up elevator After lift-off let climb out remov ing up-elevator trim Get some altitude before turning Turns can made ailerons alone coordinated rudder ailerons just rudder type turn bit different feel out plane see like best various maneuvers things happen slowly no matter what command Scale flight what get plane nothing prettier low slow fly-by big baby Landings should cause no problem Set up far enough Out throttle back idle begin descent sinks too fast give some gentle throttle adjust Let settle onto field its own pace begin final flare-out about 3-4 ft off deck full up-elevator set-down Punch throttle hold full up-elevator looks like wants nose over Let roll out bit taxi hangar Ground handling too bad skid-equipped tail-dragger dirt grass Anyone willing tackle plane will duly rewarded both challenge building fun showmanship get flying large vintage biplane should follow hours exciting enjoyable flying competition-oriented plane done right should very competitive either AMA Precision Scale Sport Scale Giant Scale point would like extend thanks number individuals plane article would have possible Firstly thanks draftsman Brian Voyer did basic drawings Seekonk High School drafting class under able guid ance Bruce Downing assistance field also helpful Though competent beginning flier written hoped can get him far enough along able use drafting talents model own conception thanks Leo Opdycke generous advice information constructive criticism plane would what [ou Perretti thanks periodic advice steering area WW Quarter Scale gratitude extended friends flying companions South Shore Radio Control Club saw through IN STOCK FOR IMMEDIATE SHIPMENT trying times encouragement appreciation helped keep motivated Lastly wonderful wife endured hours apart knowing drifted back time 1916 hoping would return References 1 Profile Publications# 139 Bristol Scouts C & D 2 BristolAircraft Since 1910C H Barnes 3 British Aeroplanes 1914-1918J M Bruce 4 ModelAirplane NewsJune 1978 5 AjipowerNovember 1975 6 World War Aeroplanes #58August 1976 #65November 1977 15 Crescent Rd Poughkeepsie NY 12601 CL Scale/Byron Continued page 47 evenings browsing stores bookshops other place appears interesting looking airplane information love Scale modeler must have enjoy hobby fullest Once have decided type aircraft wish build must weigh several different factors before final determination can made whether build model have mind start order have docu mentation necessary build model must remember Sport Scale three-view mandatory want receive points aircraft outline must also have color documentation receive color markings points can done several different ways could furnish black-and-white line drawing color chips requirement however have found Profile Publications type material well accepted quite adequate competition Sport Scale event observation Scale judges will actually judge model relationship documentation presented though possibility docu mentations coloring may duplicate origi nal colors aircraft So case Sport Scale suggest keeping mind duplicate colors see rather duplicating what supposed unless course devout purist wishes know own mind color documentation correct just human factor have observed last several years deciding museum-quality Scale airplane extremely difficult build actually having airplane disposal always case always possible build airplane wish because lack 118 Model Aviation Epoxy GI. Cowl NOSEN HOSTETLER PICA BALSA USA PLATF- CONCEPT FLEET SID MORGAN- RCM T CRAFT BYRON/SHEBER PuTS FOLKER D7 BOEING P-26&F4-B4 -GEE BEE MODY KRAFT SUPER FLY &4 SCALE AND OTHERS Send S ASE Complete List T&D FIBERGlASS SPECIALTIES 30925 Block Garden City Ml 48135 Phi 3]3 6358 ATTENTION ERS New SUPER QUADRA S8995 BRISIGHELLA FLYWHEEL $10795 QUADRA REPAIR$1000 s KIORITZ engine 244 cuin$18995 Jim Messers ERCOUPE KIT$21995 Jim Messers TOMAHAWK KIT$23995 Concepts BIG FLEET KIT$17995 P&W RADIAL ENGINES Fleet $2995 FIBERGLASS COWL Fleet $1995 BALSA & BASSWOOD sizes 40% OFF 1/4 SCALE plans QUADRA ERCOUPE TOMAHAWK SKYBOLT $2195 SUPER STEARMAN Godfrey$2495 STARDUSTER TOO ighella $2995 COCKPIT KITS Ercoupe T-Hawk $1500 Stearman Fleet F4U J-3 Cub$1850 ME-109 $1950 Citabria Nosen $2495 24-Hour Seice. Add $250 postage Send Bank Check Money Order JIM MESSERS QUALITY MODEL PRODUCTS ________________________________106 Valley View DrAllegany NY 14706