NO OCR TEXT NO OCR TEXT Underside shows method mounting landing gear dummy exhaust stack drain holes outer end smoke chamber/muffler have used 16% airfoils models up including CAP decided Stephens would try something different opted use 14% semi-symmetrical airfoil section close shape full-size Stephens has NACA 23012 idea paid off model handles beautifully maneuvers slight down control inverted can slowed almost walk falling off wing tip landing Ailerons effective right touch-down After some picture taking good buddy ex-modeler turned photographer Leon Folse ready see fly smoker works Early morning test flight day turned out usual South Texas location slight breeze out south until about 10 am winds came up Filled up fuel tank put some juice smoker tank Fired up engine got adjusted Kicked smoker looked OK Bolted wing cockpit section reloaded tanks ready taxied out lined up gave throttle nosed over no amount up elevator helped chopped throttle brought back process front bottoms wheel pants sanded off decided take off continue test flying Looking landing gear realized too much toe-in wheels acting like brake After straightening gear wheels 22 Model Aviation Authors current smoke chamber/muffler made steel Note 1am brass smoker feed tubing going exhaust stack Also see drawings Radio installation Note cable pushrods ball joint connectors fifth servo smoker behind flight function servos Compact works Tail assembly reveals use Sullivan pushrods Vertical fin rudder stabilizer elevator /4-in balsa Control throws text Aileron horn flange cut off buried aileron glued Hot Stuff Its top-hinged slight differential action Cabin section has removed reveal wing mounting system three screws Authois prototype used Super MonoKote forwing covering PRESSURE4-40 SCREWS1/2 SHEET BALSA1/4 HARD BALSA 10 TANKTHRU CANOPY DECKTURTLECECK HOLLOWED SHEET FOR ALL TAIL SURFACES ENG PRESSUREBALSA IN TOP CORI\ERS/4 SQ HARDWOOD _RUDDER LE POST TAIL BLOCK TESTOCK AIEROR SERVO LNKALE SIMILAR TO CAP 20 MODEL IN MARCH 198r MA3/32 MUSIC WIRE JOINS ELEVATORS S 0 SPAR BRACES I/8PLYWOOD FRONTAND BACK V2 BALSA TOP COWL F3A I/B BALSA 1/2 BALSA TOP COWL TOP CORNERSWP1I/B1TAJLWHEELON 3/32WIRE THRU AILERON BEARING AND INTO RUDDER 3/32 BALSA SIDES FLLL LENGTh /4 DY//FLS FOR 4-40 SCREWS I/BSI-IEET BALSA CROSS GRAiN SAW FROM FULL FOR BoTroM PLANKING COWL ONLY AFTER 1/16 SHEET WEBSSOLID BALSA TRAILING EDGE AND AILERON STOCK 7/16 X /4CAP STRIPS ON 32BALSA RIBS 1/8 REAR SBAR TO I/b PLrVVOOD TAPERED FILL BIDK UPPER AND LOWER STRAPS OR SECURING F TOUBLER LGP RING REINFORCING3/IGPLYWOOO 1/16 MUSIC WIRE 1/2 BALSA SHEETTO BELLCRANK CARVED FOR COWL RINGBLOCKS SIC 3/32ALUMINUM 4-40 SCREWSLANDING GEAR LEGS REVISED SMOKER VALVEINTO T-NUTS CHAIJNEL MOUNTS ON1 WIDE BALSA BLOCKI/B X L4 CAPSTOP OM PLY BLOCK NSIDE HOLLOWED CHEEK3/4 BALSA BOTTOM 3/16 BALSA SIDESI/B BALSA L EDGE DOUBLED BALSA BLOCK FOR COWL CHEEI 3/32 PLYWOCO SHEET GEAR AlTACH 2 V2 WHEELS1/32 BALSA L B TE SHEETING FULL-SIZE PLANS AVAILABLE . SEE PAGE 140 0 3 Ii0-4 CecOCx CSEEKCOWL 02 --F rI SA CNNWE CAWAIN NA FAA Ij F-I202 ISAF3A-FT2~ SC AS P15iasts SAl CHIPS 24 Model Aviation SmoKer tank goes tne oouom Note roam peung erouno ii smoker valve trial-fitted bottom crankcase viow Lnter wee moved hollowed-out cheek cowl er Diane s. .elage construction Fuel tank already installed1 FULL-SIZE PLANS AVAILABLE . SEE PAGE 140 SR-I Ckilkb June 1981 25 K wing panama uumng guims reuse vs-sq jig strip aiign rear OT ribs wing halves being assemoica riot blOCKS center ana St TIPS CocKpit section being built Separated wing rest fuselage polyethylene Balsa floor 3/32-in conforms airfoil shape uiue i--i form pattern shaping nose blocks fired up taxied Out again time got off problem flew straight steady needed up control level flightuntil could feed up trim could get OK Felt out some tums handled good Tried roll roll rate about like full-size Stephens 1800 per second Loops nice round steadyplaying throttle back side keep building speed Took up slowed down. slammed elevator rudder in entry good After couple turns let sticks go back neutral recovered instantly Rolled its back surprise cameI needed very little down hold Leon Folse still photo gear taking shots flying decided try get shot inverted rolled over caine across strip rolled upright after pass Leon said try again get little lower could thought myself hes gone bananas Throwing good senses caution wind said OK get trigger finger ready Made turn out over grass rolled over eased down about 2 ft off deck got shot Dont know thats confidence Kraft radio K&B 40 engine airplaneor just case going little locobut pulled off Since Ive made inverted passes smoker going sure looks great commercial smoker valve installed model being built leaked never did get smoker working really right test flights After getting home morn ing took valve out set about design own What came up shown plans works time completely blocking off pressure closed no load servo does simply pinch off silicone tubing positive shutoff smoke starts stops instant valve opened closed am still experimenting smoke chamber exhaust feed fitting exhaust get denser smoke Running 40 smoke system presents problem associated using 60 larger enginetheres just much exhaust heat available muffler work As writing have added double-walled chamber end Du-Bro spring-type muffler tube within tube-in 1-in aluminum tubing working pretty good next step add some coarse steel wool between 26 Model Aviation Fuselage nearing finish Cheek blocks added 1/2-in sheet F-i Left cheek cowl rough-sanded fuselage begins come life neres cnarming beauty tinished framework ready covering i-rant wing screw oiocita plainly visigie nerepius canopy noia Tao liii Removable cabin section sig Chipmunk canopy neat smooth piumoing necessaryrorengine ano smoker seen nere riuggedtop tuoe filling fuel tank plugged bottom tube fill smoker tank spring chamber see helps Inciden tally own propane torch buy some Cleanweld Turner Aluminum Brazing Rods got local Fed Mart practice little some light gauge aluminum stuff great once ou get hang built double chamber also complete muffler go inside cowl next model maneuver get charge Out come across field wind full borekick smoker pull up 3600 roll breaking over same heading maneuver started havent tried tail slide yet Charlie Hillyards corkscrew knife-edge across field smoker going sure looks good Snap rolls good half throttle fact youre really sharp sticks goes past 3600 very easily Landings ajoy like tail-draggers dont drive like trike gear job Reduce throttle downwind leg After making turn final keep just little power its clean aircraft glides easily About two feet off deck chop power will make kiss tarmac three-point landings Construction usually cut out parts check accuracy against plans building goes along pretty quick youre assembling gluing built wing first has completed before fuselage can finished drew rib plans have option cutting rib individually making pattern root tip ribs carving stack choose carve ribs stack nine pieces 3/32-in sheet balsa little larger root rib put root pattern inside first second pieces tip pattern outside last piece Pin together carve sand around ply pattern Use Zona Saw cut spar slots After taking stack apart sand bevel off riband should ready use Cut -in full-depth spars same piece straight-grained balsa sheet Pin 4 spar cap over plans glue pin sheet spar forward edge Pin jig place plans remember trim taper jig rib #9 position Pin -in leading edge sheet over plans check-fit rib trim necessary Glue pin rib place Glue top spar cap Slice half two 3/32 x 3 x 28 pieces C-grain balsa trailing edge TB sheeting Glue piece 16 x 28 two 1-in sheets very edge 900 angle note rib #7 plans dry glue pin sheets rear edges ribs butting -in segment against end rib Use piece 3/32 x 3 A-grain balsa top leading edge LE sheet Trim sand edge fit snugly against -in sheet LB pin place end sheet over center rib #1 Mark sheet meets rear edge top par cap unpin slice portion off sheet using straight edge use cellulous model cement leading edge spar white cabinet glue ribs because slower drying Lay bead rib first bead model glue spar front edge sheet Place sheet wing pin well leading edge roll down pin spar cap Check see ribs have pulled away jig leading edge sheet glued center section sheet between # 1 ribs goes after wing assembled Cut Continued page 114 SMOKE CHAMBER FOR MODEL AIRCRAFT 12 GAUGE STEEL-DRILL&TAP4-40 CRIMP& SILVER SOLDER END PACK THIS SECTION WITH COARSE STEEL WOOL 24 GAUGE STEEL 7/8 LIGHT STEEL TUBING ABOUT 015 WALL 24 GAUGE BAFFLE10 3/32 HOLES FLUID FEED DRILLED 900 APART SILVER SOLDER ALL JOINTS 1/8 SOFT BRASS TUBING 32 HOLES 7/8 LIGHT STEEL TUBING FLATTENED June 1981 27 smoke chamber now used author designed built after article submitted isnt referred text shown pictures Being steel holds heat much better previous aluminum unit added heat produces better smoke Also feed nozzle small holes does better job distributing smoker solution authors earlier single hole fitting Smoker solution author currently using 50-50 diesel oil Old English Lemon Furniture Polish hes still experimenting says auto transmission fluid diesel oil pre-heated wrapping tubing around exhaust twice before injection looks promisingand may give better hang time because heavier oil Commercial rights smoke chamber design reserved author Brad Shepherd Removable section cowling Its mounted ply tabs Authors prototype uses K8B 40 colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507 MINIMIZE HOT STUFF TUBE CLOGGING Small ID Hot Stuff tubing sup plied bottle No T-500 re placement pack dealers Large 10 Hot Stuff SuperT .. tubing safety Lock Super T bottle map-in spoutor No ST-500 re placement pack HOT STU makers Hot Stuff cyanoacrylate adhes lye Satellite City recently have forwarded us users solution sometimes-problem clogging small diameter applicator tubing prevelantin high humidi ty situations Since solution prob lem devised Mr Carl F De Filippo Winchester MA may widespread inter est reprint Enlarge 1/32-in hole spout iginal Hot Stuff round toothpick Insert 1-in length Hot Stuff Super T tub ing about / Cut small diameter tubing supplied bottle halfand insert Super T tubing Super T tubing available hobby shopspart No ST-500 bottle righted after use slightly increased weight Hot Stuff within large Super T tubing creates vac uum causing Hot Stuff remaining small tube pulled back bottle small tube ever does clog can al ways cut changing 10 taper ed spouts get larger larger clogs cut off replacing small tube ever neces sary Teflon-to-Teflon fit makes quick easy USA Inch Now offering full Schiuter line WORLDS FINEST MODEL PRODUCTS RC HELKOPTERS SAIL AND POWERED PLANES SAIL AND POWERED BOATS RIG ACCESSOtIES KITS PARTS AND SERVICE NOW FROM O4E LOCATION tEALER DISTRIBUTION PACE SETTING INSTANT DELIVERY NO HASSLE WARRANTIES WORLD FAMOUS SCHLUTER HELICOPTER BOOK clothespins until dry use Sigs Kwik Set epoxy job Epoxy RD pieces rib #1 flush bottom contour Epoxy -in leading edge joint Trim about 3/16 off long edge remaining two 3/32 x 1 trailing edge sheets glue place butting against -in TE spar Glue 1/16-in balsa joiner inside 3/32-in TE sheets center section Cut fit 3/32-in LE sheeting same manner TE sheeting fitted glue place Glue cap strips ribs #3 4 7 8 9 Bolt aileron cranks Lite Ply mount ing plates bend plates slightly conform rib shape epoxy ribs spar cap 5-mm epoxy Glue short cap strips #5 6 ribs Sheet center section between # 1 ribs glue sheeting behind spars Glue 1/16-in sheet webs between ribs trailing edge sheeting making sure wing pinned down solid jigs correct washout Once pieces place wing becomes very rigid Let wing dry overnight pinned down Remove framework door work bench jigs Epoxy WP- 1 piece ply RDs SD ply doubler Sheet top center section behind spar dont sheet leading edge between #1 ribs yet sheeting has dried sand entire frameworkI use 220-grit long block knock off high spots Pin panel time workbench upside down trailing edge polyvinyl sheet waxed paper underneath Trial-fit trailing edge piece trim necessary good fit against -in TE spar Glue place dry pin other panel down repeat procedure lift wing after has dried will notice slight reflex TE toward tips Dont sand ouV just sand joint transition 3/32-in sheet TE stock smooth top wing will smooth way Glue -in forward LE piece place Glue tip blocks have dried shape tip around rib #9 Round off front shown sand final shape 100-grit paper Epoxy WP-2 piece place after sanding TE straight Give wing final sanding 220-grit Continued page 118 June1981 115 aubwday MINIATURI 2594 North Phone 3061422 24 cm inch 32 HP 8009 RPM 6 lbs Bell Bearings Crank THE RISING STAR IN GIANT SCALE ENGINES 0 3 Ring Piston -fr S Sealed Points kg iVEAR WARRANTY WARRANTY SERVICE WORK CAN BR DONE BY Rouse MFG OR BY YOUR NEAREST ECNO-BIDRITZ PRODUCTS DEALER * * * * * * * ** ** -K -K** ** Exhaust Manifold Velocity Stack Kits Available k Fuselage Lay out fuselage sides 3/32 x 6 x 36 balsa Note sheet full length fuselage side lacks -in front end use ball point draw thrust line reference lines straight ball point straightedge make easy task Draw wing center line -in above parallel thrust line stabilizer center line 1 above thrust line parallel Lay out former locations 9Q0 triangle against straightedge thrust line After cutting out first side use pattern other side Make cut sides behind F-3 top center line root rib Make another cut also top center line rear cockpit between F4-A F4-T former locations Glue 3/16-in bottom longerons sidedont forget make right left side Glue doublers D-2 place side butting against 3/16-in longerons Use -in scrap between D-2 D- 1 gluing also between D-2 D-4 Glue D-3 place lining up top edge Lay Out cut -in slot stabilizer glue -in reinforcement Glue iffener strips side Trim -in offthe top -in triangle piece shown side view glue sides Zona Saw ROUSH MFOS SUB RETAU Dealer Inquiries Welcome P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 make series cuts triangle will bend fuselage shape Cut top portion fuselage between F-3 F4-T along wing center line remove pieces Care fully trim 3/32-in sides down doublers D-2 D-3 wing goes Lay out engine bolt holes F-2 Drill install bolts through firewall Solder short pieces music wire across head slots bolts install engine mount Tighten mount epoxy bolt heads rear firewall Pin down sides over top view Slip formers F-3 F-4 slots assure squareness fuselage Trim little off top triangles meet per top view Glue -in tail post top triangle 5-mm epoxy Slip F-4 out put 5-mm epoxy slot behind D-2 install former Epoxy F-3 place F-2 firewall F4-T has dried unpin fuselage turn over glue forward bottom -in trianglesalso LP landing gear plate Position landinggear drill mount ing holes Install blind nuts gear smear little epoxy hold place Prepare tanks install com ment Id like make after drawing plans realized Sullivan RST tank would probably work better smoker tank SS used drew plans Install smoker valve pushrod tubing note goes left side fuel tank Install throttle pushrod tubing Glue top -in triangles place over tank tanks packed foam use cable pushrods did install tubing nowusing two -in balsa sheet bulk heads between F-4 tall post keep stiff Epoxy FP- 1 pieces place maple blocks front corners radio compartment wing hold-downs also install rear hold-down ply plate block Epoxy ply pieces FP-2 sides making sure good glue joint meet F-4 ply plate Glue bottom 3/32-in sheet place grain running across fuselage Trim -in off two pieces TE stock glue tail post shown top view fuselage Tack-glue rear -in top sheet place roughly carve shape Take long straightedge using center line formers tail block draw center line fin Cut slot center line Glue top bottom front blocks fuselage Put wing saddle fuselage using center lines formers get wing proper place pin down wing Use yardstick measure wing tips tail posy shift wing slightly until measurement same both sidesthe wing square fuselage Drill mounting holes blocks -20 nylon screws Unpin wing tap holes screw wing place Trial-fit stabilizer get parallel wing square fuselage glue place Lay poly sheet over wing pin two cabin sides place flush existing sides fore aft wing Glue 3/32-in sheet inside two sides directly over wing Glue formers FT-i FT-2 place Glue blocks front back cabin section getting close square fit butt against top forward block rear -in sheet Glue F-i place using center lines get positioned properly Carve top bottom blocks rough shapes using F-i guide Remove wing Glue H-H pieces under front block rear -in sheet shown plans Mark top cabin blocks over center H-H tabs drill -in holes glue pieces dowel holes dry drill through center dowels H-H tabswhile holding cabin piece place Insert 4-40 blind nuts under H-H taper tops dowels X Acto # 11 blade receive flat-head bolts screw cabin fuselage Glue short pieces 3/32-in sheet behind F-i sides glue cheek cowl blocks place Glue -in sheet front F-i noting rough shape photo fuselage Shape cheek cowls front end around F-i small block 100-grit paper Sand entire fuselage rough shape Remove rear -in sheet behind cabin hollow shown side view glue permanently place Glue fin placeuse 900 triangles get square Using X-Acto saw blade stiffener back removed cut cowl away shown plans Glue ply cowl hold-tabs place inside top bottom blocks Glue pieces dowel removable cowl section over center line tabs done cabin top Drill holes 4-40 screws mount blind nuts ply tabs Carve inside cheeks approximately 3/16-in thickness Continued page 122 118 Model Aviation r INDIAN CITY RADIO CONTROL CLUB PRESENTS GREATER MICHIGAN MODELERS SHOW & EXPO HI PLANES BOATSCARS MANUFACTURERS STATIC OISPLAYSSWAP SHOP October 234 1981 West Eight Mie Artillery Annoiy Oak Park Michigan shape air outlets shown photos Drill drain holes underneath F-2 used Ys-in aluminum tubing exhaust effect Paint entire inside engine compartment slow-drying epoxy fuel proof after first covering engine mounting bolts 1-in lengths fuel tubing cabin interior painted everything flat black adding some talcum powder black dope fixed up dash some instru ments switches throttle mixture control Trim canopy until has good fit around Glue 1-in balsa block bottom 2-in William Bros pilot carve balsa conform plastic shape trial-fit under canopy trim block until pilot looks right After painting pilot added earphones mike glasses shoulder harness chute straps made white shoelaces little added realism Glue pilot Use two strips -in masking tape over canopy fore aft hold cabin top right placethen carefully run bead Hot Stuff glue around edge canopy joins balsa Mask offthe canopy before doing finishing Lay out ailerons straightedge ball point shown plans Carefully cut out ailerons sand bevel shown rib #7 Cut hinge slots top edge gives slight differential action ailerons moved cut flange off nylon horn gouged slot bottom aileron Hot Stuffed horn aileron Install 1/16-in music wire pushrods bend aileron links shown plans solder washer dogleg Sheet top center section wing between #1 ribs Use -in drill bit bottom up bolt holes top sheet Cut square sheet out bottom center section behind spar aileron servo mounted servo tray flat against piece -in ply used Du-Bros dual connector ball link tie two pushrods together Make tailwheel assembly shown side view using aileron horn bearing Insert piece 3/32-in brass tubing bearing insert 1/16-in music wire wheel collar under bend wire shape Mark rudder wire inserted drill -in hole epoxy piece nylon tubing hole Cut hinge slots rudder trialfit Cut hinge slots elevator stabilizer glue place same rudder Finishing Everyone has own finishing technique heres did covered wing Super MonoKote trim turn iron down just enough heat stick Super Super Try some scraps first doped rest itsanded smooththen doped some light silkspan over balsa doped few coats clear sanded 220-grit until smooth Put coat balsa filler-coat sanded off checked small blemishes holding up light filler-coat sanding until wood smooth matched cream MonoKote adding yellow small dab red small dab black white dopekept dabbing diddlin until dope matched piece scrap cream MonoKote Install radio gear keep center gravity CG within limits shown plans As mentioned beginning very responsive model control surface throws should kept within limits least test flying elevator throw measured widest point -in up -in down product review product review product review dont have shill Stricks 4-in Hobby Sander previously distributed another firm $3995 because buddies have bench sander has adjustable tilt table sits elbow especially ideal guys lot stick frameworksuch rubber schoolyard scale course has usesfastest way accur ately bevel cross-piece ends blocks etc desired angle Double-ended shaft accepts grinder second sanding disk Available accessories include 459QO miter guide grinding wheel extra adhesivecovered sandpaper various grades Youll like Sendem$Saforabrochure covering item other special values product review product review product review 122 Model Aviation GET ORGANIZED Hee s set hI 4 sludy Ides holds oh 4 years favo,te 5 agazines 4 MAG FILES $495 5e,d $495 plus $100 postage handyng DOM INOtMTRIES PO BOX 388K DOVER NH 03820 I ~Y dI1UUr fO iies R/C Goodies PO Box 192 Van Nuys CA 91 408 ailerons set -in up 3/16-in down Rudder should have throw can get hitting elevators project has given lot real enjoyment get excited time fly hope experience decide build same Have fun thats what its about Heli- Fli/Burdin Continued page 34 rotor shaft Adjust location batteries etc get location Dont change CG location accommodate flying conditions would fixed-wing aircraft Heli copter CG should always under main shaft flying conditions should adjusted trim JS couple comments before FbI 1 Your flying site should smooth asphalt grass training program Early ma neuvers require sliding across surface lift off dont want grass snagging skids struggle air 2 Choose flying site gives some peace work interruption interested bystanders cant concentrate people asking questions remember youre little dangerous training dont deserve audience yet dont want either 3 Most manufacturers have wide stance landing gear recommend training Revolution 40 assembly manual described simple set skids made out -in plastic water pipe Its cheap easily made strong fixture wide stance prevents tip-overs early days training turn saves rotor blades Helicopters OK airalmost Check List Pre-flight 1 Flight kit stocked spare parts tools 2 Radiocontrol range check 3 Radiofull battery charge 4 Correct weather flight 5 Main rotor tracking 6 Transmitter trim settings Post-flight 1 Check nuts bolts linkages 2 Main rotor coning angle lead/lag pitchas required 3 Tail rotor drive mechanism 4 Servo mounts condition 5 Fuel system 6 Bearing lubrication 7 All other alignments HELI-FLI LEVEL 2 maneuvers level accom plished calm air Task Descriptions Measurement Criteria 1 The student will trim cyclic yaw controls allow zero altitude hover ZAH transmitter trim levers neutral position 2 The student will able maintain position orientation ofthe Helicopter within al-ft square executing ZAH maneuver Position orientation will maintained tail-in period minute 3 The student will able maneuver Helicopter over triangular course 6-ft GUSMA io Controlled Hand Launched Gear Up Scale Model Aircraft June 1981 123 HENDERTOON
Edition: Model Aviation - 1981/06
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 27, 114, 115, 118, 122, 123
Edition: Model Aviation - 1981/06
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 27, 114, 115, 118, 122, 123
NO OCR TEXT NO OCR TEXT Underside shows method mounting landing gear dummy exhaust stack drain holes outer end smoke chamber/muffler have used 16% airfoils models up including CAP decided Stephens would try something different opted use 14% semi-symmetrical airfoil section close shape full-size Stephens has NACA 23012 idea paid off model handles beautifully maneuvers slight down control inverted can slowed almost walk falling off wing tip landing Ailerons effective right touch-down After some picture taking good buddy ex-modeler turned photographer Leon Folse ready see fly smoker works Early morning test flight day turned out usual South Texas location slight breeze out south until about 10 am winds came up Filled up fuel tank put some juice smoker tank Fired up engine got adjusted Kicked smoker looked OK Bolted wing cockpit section reloaded tanks ready taxied out lined up gave throttle nosed over no amount up elevator helped chopped throttle brought back process front bottoms wheel pants sanded off decided take off continue test flying Looking landing gear realized too much toe-in wheels acting like brake After straightening gear wheels 22 Model Aviation Authors current smoke chamber/muffler made steel Note 1am brass smoker feed tubing going exhaust stack Also see drawings Radio installation Note cable pushrods ball joint connectors fifth servo smoker behind flight function servos Compact works Tail assembly reveals use Sullivan pushrods Vertical fin rudder stabilizer elevator /4-in balsa Control throws text Aileron horn flange cut off buried aileron glued Hot Stuff Its top-hinged slight differential action Cabin section has removed reveal wing mounting system three screws Authois prototype used Super MonoKote forwing covering PRESSURE4-40 SCREWS1/2 SHEET BALSA1/4 HARD BALSA 10 TANKTHRU CANOPY DECKTURTLECECK HOLLOWED SHEET FOR ALL TAIL SURFACES ENG PRESSUREBALSA IN TOP CORI\ERS/4 SQ HARDWOOD _RUDDER LE POST TAIL BLOCK TESTOCK AIEROR SERVO LNKALE SIMILAR TO CAP 20 MODEL IN MARCH 198r MA3/32 MUSIC WIRE JOINS ELEVATORS S 0 SPAR BRACES I/8PLYWOOD FRONTAND BACK V2 BALSA TOP COWL F3A I/B BALSA 1/2 BALSA TOP COWL TOP CORNERSWP1I/B1TAJLWHEELON 3/32WIRE THRU AILERON BEARING AND INTO RUDDER 3/32 BALSA SIDES FLLL LENGTh /4 DY//FLS FOR 4-40 SCREWS I/BSI-IEET BALSA CROSS GRAiN SAW FROM FULL FOR BoTroM PLANKING COWL ONLY AFTER 1/16 SHEET WEBSSOLID BALSA TRAILING EDGE AND AILERON STOCK 7/16 X /4CAP STRIPS ON 32BALSA RIBS 1/8 REAR SBAR TO I/b PLrVVOOD TAPERED FILL BIDK UPPER AND LOWER STRAPS OR SECURING F TOUBLER LGP RING REINFORCING3/IGPLYWOOO 1/16 MUSIC WIRE 1/2 BALSA SHEETTO BELLCRANK CARVED FOR COWL RINGBLOCKS SIC 3/32ALUMINUM 4-40 SCREWSLANDING GEAR LEGS REVISED SMOKER VALVEINTO T-NUTS CHAIJNEL MOUNTS ON1 WIDE BALSA BLOCKI/B X L4 CAPSTOP OM PLY BLOCK NSIDE HOLLOWED CHEEK3/4 BALSA BOTTOM 3/16 BALSA SIDESI/B BALSA L EDGE DOUBLED BALSA BLOCK FOR COWL CHEEI 3/32 PLYWOCO SHEET GEAR AlTACH 2 V2 WHEELS1/32 BALSA L B TE SHEETING FULL-SIZE PLANS AVAILABLE . SEE PAGE 140 0 3 Ii0-4 CecOCx CSEEKCOWL 02 --F rI SA CNNWE CAWAIN NA FAA Ij F-I202 ISAF3A-FT2~ SC AS P15iasts SAl CHIPS 24 Model Aviation SmoKer tank goes tne oouom Note roam peung erouno ii smoker valve trial-fitted bottom crankcase viow Lnter wee moved hollowed-out cheek cowl er Diane s. .elage construction Fuel tank already installed1 FULL-SIZE PLANS AVAILABLE . SEE PAGE 140 SR-I Ckilkb June 1981 25 K wing panama uumng guims reuse vs-sq jig strip aiign rear OT ribs wing halves being assemoica riot blOCKS center ana St TIPS CocKpit section being built Separated wing rest fuselage polyethylene Balsa floor 3/32-in conforms airfoil shape uiue i--i form pattern shaping nose blocks fired up taxied Out again time got off problem flew straight steady needed up control level flightuntil could feed up trim could get OK Felt out some tums handled good Tried roll roll rate about like full-size Stephens 1800 per second Loops nice round steadyplaying throttle back side keep building speed Took up slowed down. slammed elevator rudder in entry good After couple turns let sticks go back neutral recovered instantly Rolled its back surprise cameI needed very little down hold Leon Folse still photo gear taking shots flying decided try get shot inverted rolled over caine across strip rolled upright after pass Leon said try again get little lower could thought myself hes gone bananas Throwing good senses caution wind said OK get trigger finger ready Made turn out over grass rolled over eased down about 2 ft off deck got shot Dont know thats confidence Kraft radio K&B 40 engine airplaneor just case going little locobut pulled off Since Ive made inverted passes smoker going sure looks great commercial smoker valve installed model being built leaked never did get smoker working really right test flights After getting home morn ing took valve out set about design own What came up shown plans works time completely blocking off pressure closed no load servo does simply pinch off silicone tubing positive shutoff smoke starts stops instant valve opened closed am still experimenting smoke chamber exhaust feed fitting exhaust get denser smoke Running 40 smoke system presents problem associated using 60 larger enginetheres just much exhaust heat available muffler work As writing have added double-walled chamber end Du-Bro spring-type muffler tube within tube-in 1-in aluminum tubing working pretty good next step add some coarse steel wool between 26 Model Aviation Fuselage nearing finish Cheek blocks added 1/2-in sheet F-i Left cheek cowl rough-sanded fuselage begins come life neres cnarming beauty tinished framework ready covering i-rant wing screw oiocita plainly visigie nerepius canopy noia Tao liii Removable cabin section sig Chipmunk canopy neat smooth piumoing necessaryrorengine ano smoker seen nere riuggedtop tuoe filling fuel tank plugged bottom tube fill smoker tank spring chamber see helps Inciden tally own propane torch buy some Cleanweld Turner Aluminum Brazing Rods got local Fed Mart practice little some light gauge aluminum stuff great once ou get hang built double chamber also complete muffler go inside cowl next model maneuver get charge Out come across field wind full borekick smoker pull up 3600 roll breaking over same heading maneuver started havent tried tail slide yet Charlie Hillyards corkscrew knife-edge across field smoker going sure looks good Snap rolls good half throttle fact youre really sharp sticks goes past 3600 very easily Landings ajoy like tail-draggers dont drive like trike gear job Reduce throttle downwind leg After making turn final keep just little power its clean aircraft glides easily About two feet off deck chop power will make kiss tarmac three-point landings Construction usually cut out parts check accuracy against plans building goes along pretty quick youre assembling gluing built wing first has completed before fuselage can finished drew rib plans have option cutting rib individually making pattern root tip ribs carving stack choose carve ribs stack nine pieces 3/32-in sheet balsa little larger root rib put root pattern inside first second pieces tip pattern outside last piece Pin together carve sand around ply pattern Use Zona Saw cut spar slots After taking stack apart sand bevel off riband should ready use Cut -in full-depth spars same piece straight-grained balsa sheet Pin 4 spar cap over plans glue pin sheet spar forward edge Pin jig place plans remember trim taper jig rib #9 position Pin -in leading edge sheet over plans check-fit rib trim necessary Glue pin rib place Glue top spar cap Slice half two 3/32 x 3 x 28 pieces C-grain balsa trailing edge TB sheeting Glue piece 16 x 28 two 1-in sheets very edge 900 angle note rib #7 plans dry glue pin sheets rear edges ribs butting -in segment against end rib Use piece 3/32 x 3 A-grain balsa top leading edge LE sheet Trim sand edge fit snugly against -in sheet LB pin place end sheet over center rib #1 Mark sheet meets rear edge top par cap unpin slice portion off sheet using straight edge use cellulous model cement leading edge spar white cabinet glue ribs because slower drying Lay bead rib first bead model glue spar front edge sheet Place sheet wing pin well leading edge roll down pin spar cap Check see ribs have pulled away jig leading edge sheet glued center section sheet between # 1 ribs goes after wing assembled Cut Continued page 114 SMOKE CHAMBER FOR MODEL AIRCRAFT 12 GAUGE STEEL-DRILL&TAP4-40 CRIMP& SILVER SOLDER END PACK THIS SECTION WITH COARSE STEEL WOOL 24 GAUGE STEEL 7/8 LIGHT STEEL TUBING ABOUT 015 WALL 24 GAUGE BAFFLE10 3/32 HOLES FLUID FEED DRILLED 900 APART SILVER SOLDER ALL JOINTS 1/8 SOFT BRASS TUBING 32 HOLES 7/8 LIGHT STEEL TUBING FLATTENED June 1981 27 smoke chamber now used author designed built after article submitted isnt referred text shown pictures Being steel holds heat much better previous aluminum unit added heat produces better smoke Also feed nozzle small holes does better job distributing smoker solution authors earlier single hole fitting Smoker solution author currently using 50-50 diesel oil Old English Lemon Furniture Polish hes still experimenting says auto transmission fluid diesel oil pre-heated wrapping tubing around exhaust twice before injection looks promisingand may give better hang time because heavier oil Commercial rights smoke chamber design reserved author Brad Shepherd Removable section cowling Its mounted ply tabs Authors prototype uses K8B 40 colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507 MINIMIZE HOT STUFF TUBE CLOGGING Small ID Hot Stuff tubing sup plied bottle No T-500 re placement pack dealers Large 10 Hot Stuff SuperT .. tubing safety Lock Super T bottle map-in spoutor No ST-500 re placement pack HOT STU makers Hot Stuff cyanoacrylate adhes lye Satellite City recently have forwarded us users solution sometimes-problem clogging small diameter applicator tubing prevelantin high humidi ty situations Since solution prob lem devised Mr Carl F De Filippo Winchester MA may widespread inter est reprint Enlarge 1/32-in hole spout iginal Hot Stuff round toothpick Insert 1-in length Hot Stuff Super T tub ing about / Cut small diameter tubing supplied bottle halfand insert Super T tubing Super T tubing available hobby shopspart No ST-500 bottle righted after use slightly increased weight Hot Stuff within large Super T tubing creates vac uum causing Hot Stuff remaining small tube pulled back bottle small tube ever does clog can al ways cut changing 10 taper ed spouts get larger larger clogs cut off replacing small tube ever neces sary Teflon-to-Teflon fit makes quick easy USA Inch Now offering full Schiuter line WORLDS FINEST MODEL PRODUCTS RC HELKOPTERS SAIL AND POWERED PLANES SAIL AND POWERED BOATS RIG ACCESSOtIES KITS PARTS AND SERVICE NOW FROM O4E LOCATION tEALER DISTRIBUTION PACE SETTING INSTANT DELIVERY NO HASSLE WARRANTIES WORLD FAMOUS SCHLUTER HELICOPTER BOOK clothespins until dry use Sigs Kwik Set epoxy job Epoxy RD pieces rib #1 flush bottom contour Epoxy -in leading edge joint Trim about 3/16 off long edge remaining two 3/32 x 1 trailing edge sheets glue place butting against -in TE spar Glue 1/16-in balsa joiner inside 3/32-in TE sheets center section Cut fit 3/32-in LE sheeting same manner TE sheeting fitted glue place Glue cap strips ribs #3 4 7 8 9 Bolt aileron cranks Lite Ply mount ing plates bend plates slightly conform rib shape epoxy ribs spar cap 5-mm epoxy Glue short cap strips #5 6 ribs Sheet center section between # 1 ribs glue sheeting behind spars Glue 1/16-in sheet webs between ribs trailing edge sheeting making sure wing pinned down solid jigs correct washout Once pieces place wing becomes very rigid Let wing dry overnight pinned down Remove framework door work bench jigs Epoxy WP- 1 piece ply RDs SD ply doubler Sheet top center section behind spar dont sheet leading edge between #1 ribs yet sheeting has dried sand entire frameworkI use 220-grit long block knock off high spots Pin panel time workbench upside down trailing edge polyvinyl sheet waxed paper underneath Trial-fit trailing edge piece trim necessary good fit against -in TE spar Glue place dry pin other panel down repeat procedure lift wing after has dried will notice slight reflex TE toward tips Dont sand ouV just sand joint transition 3/32-in sheet TE stock smooth top wing will smooth way Glue -in forward LE piece place Glue tip blocks have dried shape tip around rib #9 Round off front shown sand final shape 100-grit paper Epoxy WP-2 piece place after sanding TE straight Give wing final sanding 220-grit Continued page 118 June1981 115 aubwday MINIATURI 2594 North Phone 3061422 24 cm inch 32 HP 8009 RPM 6 lbs Bell Bearings Crank THE RISING STAR IN GIANT SCALE ENGINES 0 3 Ring Piston -fr S Sealed Points kg iVEAR WARRANTY WARRANTY SERVICE WORK CAN BR DONE BY Rouse MFG OR BY YOUR NEAREST ECNO-BIDRITZ PRODUCTS DEALER * * * * * * * ** ** -K -K** ** Exhaust Manifold Velocity Stack Kits Available k Fuselage Lay out fuselage sides 3/32 x 6 x 36 balsa Note sheet full length fuselage side lacks -in front end use ball point draw thrust line reference lines straight ball point straightedge make easy task Draw wing center line -in above parallel thrust line stabilizer center line 1 above thrust line parallel Lay out former locations 9Q0 triangle against straightedge thrust line After cutting out first side use pattern other side Make cut sides behind F-3 top center line root rib Make another cut also top center line rear cockpit between F4-A F4-T former locations Glue 3/16-in bottom longerons sidedont forget make right left side Glue doublers D-2 place side butting against 3/16-in longerons Use -in scrap between D-2 D- 1 gluing also between D-2 D-4 Glue D-3 place lining up top edge Lay Out cut -in slot stabilizer glue -in reinforcement Glue iffener strips side Trim -in offthe top -in triangle piece shown side view glue sides Zona Saw ROUSH MFOS SUB RETAU Dealer Inquiries Welcome P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 make series cuts triangle will bend fuselage shape Cut top portion fuselage between F-3 F4-T along wing center line remove pieces Care fully trim 3/32-in sides down doublers D-2 D-3 wing goes Lay out engine bolt holes F-2 Drill install bolts through firewall Solder short pieces music wire across head slots bolts install engine mount Tighten mount epoxy bolt heads rear firewall Pin down sides over top view Slip formers F-3 F-4 slots assure squareness fuselage Trim little off top triangles meet per top view Glue -in tail post top triangle 5-mm epoxy Slip F-4 out put 5-mm epoxy slot behind D-2 install former Epoxy F-3 place F-2 firewall F4-T has dried unpin fuselage turn over glue forward bottom -in trianglesalso LP landing gear plate Position landinggear drill mount ing holes Install blind nuts gear smear little epoxy hold place Prepare tanks install com ment Id like make after drawing plans realized Sullivan RST tank would probably work better smoker tank SS used drew plans Install smoker valve pushrod tubing note goes left side fuel tank Install throttle pushrod tubing Glue top -in triangles place over tank tanks packed foam use cable pushrods did install tubing nowusing two -in balsa sheet bulk heads between F-4 tall post keep stiff Epoxy FP- 1 pieces place maple blocks front corners radio compartment wing hold-downs also install rear hold-down ply plate block Epoxy ply pieces FP-2 sides making sure good glue joint meet F-4 ply plate Glue bottom 3/32-in sheet place grain running across fuselage Trim -in off two pieces TE stock glue tail post shown top view fuselage Tack-glue rear -in top sheet place roughly carve shape Take long straightedge using center line formers tail block draw center line fin Cut slot center line Glue top bottom front blocks fuselage Put wing saddle fuselage using center lines formers get wing proper place pin down wing Use yardstick measure wing tips tail posy shift wing slightly until measurement same both sidesthe wing square fuselage Drill mounting holes blocks -20 nylon screws Unpin wing tap holes screw wing place Trial-fit stabilizer get parallel wing square fuselage glue place Lay poly sheet over wing pin two cabin sides place flush existing sides fore aft wing Glue 3/32-in sheet inside two sides directly over wing Glue formers FT-i FT-2 place Glue blocks front back cabin section getting close square fit butt against top forward block rear -in sheet Glue F-i place using center lines get positioned properly Carve top bottom blocks rough shapes using F-i guide Remove wing Glue H-H pieces under front block rear -in sheet shown plans Mark top cabin blocks over center H-H tabs drill -in holes glue pieces dowel holes dry drill through center dowels H-H tabswhile holding cabin piece place Insert 4-40 blind nuts under H-H taper tops dowels X Acto # 11 blade receive flat-head bolts screw cabin fuselage Glue short pieces 3/32-in sheet behind F-i sides glue cheek cowl blocks place Glue -in sheet front F-i noting rough shape photo fuselage Shape cheek cowls front end around F-i small block 100-grit paper Sand entire fuselage rough shape Remove rear -in sheet behind cabin hollow shown side view glue permanently place Glue fin placeuse 900 triangles get square Using X-Acto saw blade stiffener back removed cut cowl away shown plans Glue ply cowl hold-tabs place inside top bottom blocks Glue pieces dowel removable cowl section over center line tabs done cabin top Drill holes 4-40 screws mount blind nuts ply tabs Carve inside cheeks approximately 3/16-in thickness Continued page 122 118 Model Aviation r INDIAN CITY RADIO CONTROL CLUB PRESENTS GREATER MICHIGAN MODELERS SHOW & EXPO HI PLANES BOATSCARS MANUFACTURERS STATIC OISPLAYSSWAP SHOP October 234 1981 West Eight Mie Artillery Annoiy Oak Park Michigan shape air outlets shown photos Drill drain holes underneath F-2 used Ys-in aluminum tubing exhaust effect Paint entire inside engine compartment slow-drying epoxy fuel proof after first covering engine mounting bolts 1-in lengths fuel tubing cabin interior painted everything flat black adding some talcum powder black dope fixed up dash some instru ments switches throttle mixture control Trim canopy until has good fit around Glue 1-in balsa block bottom 2-in William Bros pilot carve balsa conform plastic shape trial-fit under canopy trim block until pilot looks right After painting pilot added earphones mike glasses shoulder harness chute straps made white shoelaces little added realism Glue pilot Use two strips -in masking tape over canopy fore aft hold cabin top right placethen carefully run bead Hot Stuff glue around edge canopy joins balsa Mask offthe canopy before doing finishing Lay out ailerons straightedge ball point shown plans Carefully cut out ailerons sand bevel shown rib #7 Cut hinge slots top edge gives slight differential action ailerons moved cut flange off nylon horn gouged slot bottom aileron Hot Stuffed horn aileron Install 1/16-in music wire pushrods bend aileron links shown plans solder washer dogleg Sheet top center section wing between #1 ribs Use -in drill bit bottom up bolt holes top sheet Cut square sheet out bottom center section behind spar aileron servo mounted servo tray flat against piece -in ply used Du-Bros dual connector ball link tie two pushrods together Make tailwheel assembly shown side view using aileron horn bearing Insert piece 3/32-in brass tubing bearing insert 1/16-in music wire wheel collar under bend wire shape Mark rudder wire inserted drill -in hole epoxy piece nylon tubing hole Cut hinge slots rudder trialfit Cut hinge slots elevator stabilizer glue place same rudder Finishing Everyone has own finishing technique heres did covered wing Super MonoKote trim turn iron down just enough heat stick Super Super Try some scraps first doped rest itsanded smooththen doped some light silkspan over balsa doped few coats clear sanded 220-grit until smooth Put coat balsa filler-coat sanded off checked small blemishes holding up light filler-coat sanding until wood smooth matched cream MonoKote adding yellow small dab red small dab black white dopekept dabbing diddlin until dope matched piece scrap cream MonoKote Install radio gear keep center gravity CG within limits shown plans As mentioned beginning very responsive model control surface throws should kept within limits least test flying elevator throw measured widest point -in up -in down product review product review product review dont have shill Stricks 4-in Hobby Sander previously distributed another firm $3995 because buddies have bench sander has adjustable tilt table sits elbow especially ideal guys lot stick frameworksuch rubber schoolyard scale course has usesfastest way accur ately bevel cross-piece ends blocks etc desired angle Double-ended shaft accepts grinder second sanding disk Available accessories include 459QO miter guide grinding wheel extra adhesivecovered sandpaper various grades Youll like Sendem$Saforabrochure covering item other special values product review product review product review 122 Model Aviation GET ORGANIZED Hee s set hI 4 sludy Ides holds oh 4 years favo,te 5 agazines 4 MAG FILES $495 5e,d $495 plus $100 postage handyng DOM INOtMTRIES PO BOX 388K DOVER NH 03820 I ~Y dI1UUr fO iies R/C Goodies PO Box 192 Van Nuys CA 91 408 ailerons set -in up 3/16-in down Rudder should have throw can get hitting elevators project has given lot real enjoyment get excited time fly hope experience decide build same Have fun thats what its about Heli- Fli/Burdin Continued page 34 rotor shaft Adjust location batteries etc get location Dont change CG location accommodate flying conditions would fixed-wing aircraft Heli copter CG should always under main shaft flying conditions should adjusted trim JS couple comments before FbI 1 Your flying site should smooth asphalt grass training program Early ma neuvers require sliding across surface lift off dont want grass snagging skids struggle air 2 Choose flying site gives some peace work interruption interested bystanders cant concentrate people asking questions remember youre little dangerous training dont deserve audience yet dont want either 3 Most manufacturers have wide stance landing gear recommend training Revolution 40 assembly manual described simple set skids made out -in plastic water pipe Its cheap easily made strong fixture wide stance prevents tip-overs early days training turn saves rotor blades Helicopters OK airalmost Check List Pre-flight 1 Flight kit stocked spare parts tools 2 Radiocontrol range check 3 Radiofull battery charge 4 Correct weather flight 5 Main rotor tracking 6 Transmitter trim settings Post-flight 1 Check nuts bolts linkages 2 Main rotor coning angle lead/lag pitchas required 3 Tail rotor drive mechanism 4 Servo mounts condition 5 Fuel system 6 Bearing lubrication 7 All other alignments HELI-FLI LEVEL 2 maneuvers level accom plished calm air Task Descriptions Measurement Criteria 1 The student will trim cyclic yaw controls allow zero altitude hover ZAH transmitter trim levers neutral position 2 The student will able maintain position orientation ofthe Helicopter within al-ft square executing ZAH maneuver Position orientation will maintained tail-in period minute 3 The student will able maneuver Helicopter over triangular course 6-ft GUSMA io Controlled Hand Launched Gear Up Scale Model Aircraft June 1981 123 HENDERTOON
Edition: Model Aviation - 1981/06
Page Numbers: 20, 21, 22, 23, 24, 25, 26, 27, 114, 115, 118, 122, 123
NO OCR TEXT NO OCR TEXT Underside shows method mounting landing gear dummy exhaust stack drain holes outer end smoke chamber/muffler have used 16% airfoils models up including CAP decided Stephens would try something different opted use 14% semi-symmetrical airfoil section close shape full-size Stephens has NACA 23012 idea paid off model handles beautifully maneuvers slight down control inverted can slowed almost walk falling off wing tip landing Ailerons effective right touch-down After some picture taking good buddy ex-modeler turned photographer Leon Folse ready see fly smoker works Early morning test flight day turned out usual South Texas location slight breeze out south until about 10 am winds came up Filled up fuel tank put some juice smoker tank Fired up engine got adjusted Kicked smoker looked OK Bolted wing cockpit section reloaded tanks ready taxied out lined up gave throttle nosed over no amount up elevator helped chopped throttle brought back process front bottoms wheel pants sanded off decided take off continue test flying Looking landing gear realized too much toe-in wheels acting like brake After straightening gear wheels 22 Model Aviation Authors current smoke chamber/muffler made steel Note 1am brass smoker feed tubing going exhaust stack Also see drawings Radio installation Note cable pushrods ball joint connectors fifth servo smoker behind flight function servos Compact works Tail assembly reveals use Sullivan pushrods Vertical fin rudder stabilizer elevator /4-in balsa Control throws text Aileron horn flange cut off buried aileron glued Hot Stuff Its top-hinged slight differential action Cabin section has removed reveal wing mounting system three screws Authois prototype used Super MonoKote forwing covering PRESSURE4-40 SCREWS1/2 SHEET BALSA1/4 HARD BALSA 10 TANKTHRU CANOPY DECKTURTLECECK HOLLOWED SHEET FOR ALL TAIL SURFACES ENG PRESSUREBALSA IN TOP CORI\ERS/4 SQ HARDWOOD _RUDDER LE POST TAIL BLOCK TESTOCK AIEROR SERVO LNKALE SIMILAR TO CAP 20 MODEL IN MARCH 198r MA3/32 MUSIC WIRE JOINS ELEVATORS S 0 SPAR BRACES I/8PLYWOOD FRONTAND BACK V2 BALSA TOP COWL F3A I/B BALSA 1/2 BALSA TOP COWL TOP CORNERSWP1I/B1TAJLWHEELON 3/32WIRE THRU AILERON BEARING AND INTO RUDDER 3/32 BALSA SIDES FLLL LENGTh /4 DY//FLS FOR 4-40 SCREWS I/BSI-IEET BALSA CROSS GRAiN SAW FROM FULL FOR BoTroM PLANKING COWL ONLY AFTER 1/16 SHEET WEBSSOLID BALSA TRAILING EDGE AND AILERON STOCK 7/16 X /4CAP STRIPS ON 32BALSA RIBS 1/8 REAR SBAR TO I/b PLrVVOOD TAPERED FILL BIDK UPPER AND LOWER STRAPS OR SECURING F TOUBLER LGP RING REINFORCING3/IGPLYWOOO 1/16 MUSIC WIRE 1/2 BALSA SHEETTO BELLCRANK CARVED FOR COWL RINGBLOCKS SIC 3/32ALUMINUM 4-40 SCREWSLANDING GEAR LEGS REVISED SMOKER VALVEINTO T-NUTS CHAIJNEL MOUNTS ON1 WIDE BALSA BLOCKI/B X L4 CAPSTOP OM PLY BLOCK NSIDE HOLLOWED CHEEK3/4 BALSA BOTTOM 3/16 BALSA SIDESI/B BALSA L EDGE DOUBLED BALSA BLOCK FOR COWL CHEEI 3/32 PLYWOCO SHEET GEAR AlTACH 2 V2 WHEELS1/32 BALSA L B TE SHEETING FULL-SIZE PLANS AVAILABLE . SEE PAGE 140 0 3 Ii0-4 CecOCx CSEEKCOWL 02 --F rI SA CNNWE CAWAIN NA FAA Ij F-I202 ISAF3A-FT2~ SC AS P15iasts SAl CHIPS 24 Model Aviation SmoKer tank goes tne oouom Note roam peung erouno ii smoker valve trial-fitted bottom crankcase viow Lnter wee moved hollowed-out cheek cowl er Diane s. .elage construction Fuel tank already installed1 FULL-SIZE PLANS AVAILABLE . SEE PAGE 140 SR-I Ckilkb June 1981 25 K wing panama uumng guims reuse vs-sq jig strip aiign rear OT ribs wing halves being assemoica riot blOCKS center ana St TIPS CocKpit section being built Separated wing rest fuselage polyethylene Balsa floor 3/32-in conforms airfoil shape uiue i--i form pattern shaping nose blocks fired up taxied Out again time got off problem flew straight steady needed up control level flightuntil could feed up trim could get OK Felt out some tums handled good Tried roll roll rate about like full-size Stephens 1800 per second Loops nice round steadyplaying throttle back side keep building speed Took up slowed down. slammed elevator rudder in entry good After couple turns let sticks go back neutral recovered instantly Rolled its back surprise cameI needed very little down hold Leon Folse still photo gear taking shots flying decided try get shot inverted rolled over caine across strip rolled upright after pass Leon said try again get little lower could thought myself hes gone bananas Throwing good senses caution wind said OK get trigger finger ready Made turn out over grass rolled over eased down about 2 ft off deck got shot Dont know thats confidence Kraft radio K&B 40 engine airplaneor just case going little locobut pulled off Since Ive made inverted passes smoker going sure looks great commercial smoker valve installed model being built leaked never did get smoker working really right test flights After getting home morn ing took valve out set about design own What came up shown plans works time completely blocking off pressure closed no load servo does simply pinch off silicone tubing positive shutoff smoke starts stops instant valve opened closed am still experimenting smoke chamber exhaust feed fitting exhaust get denser smoke Running 40 smoke system presents problem associated using 60 larger enginetheres just much exhaust heat available muffler work As writing have added double-walled chamber end Du-Bro spring-type muffler tube within tube-in 1-in aluminum tubing working pretty good next step add some coarse steel wool between 26 Model Aviation Fuselage nearing finish Cheek blocks added 1/2-in sheet F-i Left cheek cowl rough-sanded fuselage begins come life neres cnarming beauty tinished framework ready covering i-rant wing screw oiocita plainly visigie nerepius canopy noia Tao liii Removable cabin section sig Chipmunk canopy neat smooth piumoing necessaryrorengine ano smoker seen nere riuggedtop tuoe filling fuel tank plugged bottom tube fill smoker tank spring chamber see helps Inciden tally own propane torch buy some Cleanweld Turner Aluminum Brazing Rods got local Fed Mart practice little some light gauge aluminum stuff great once ou get hang built double chamber also complete muffler go inside cowl next model maneuver get charge Out come across field wind full borekick smoker pull up 3600 roll breaking over same heading maneuver started havent tried tail slide yet Charlie Hillyards corkscrew knife-edge across field smoker going sure looks good Snap rolls good half throttle fact youre really sharp sticks goes past 3600 very easily Landings ajoy like tail-draggers dont drive like trike gear job Reduce throttle downwind leg After making turn final keep just little power its clean aircraft glides easily About two feet off deck chop power will make kiss tarmac three-point landings Construction usually cut out parts check accuracy against plans building goes along pretty quick youre assembling gluing built wing first has completed before fuselage can finished drew rib plans have option cutting rib individually making pattern root tip ribs carving stack choose carve ribs stack nine pieces 3/32-in sheet balsa little larger root rib put root pattern inside first second pieces tip pattern outside last piece Pin together carve sand around ply pattern Use Zona Saw cut spar slots After taking stack apart sand bevel off riband should ready use Cut -in full-depth spars same piece straight-grained balsa sheet Pin 4 spar cap over plans glue pin sheet spar forward edge Pin jig place plans remember trim taper jig rib #9 position Pin -in leading edge sheet over plans check-fit rib trim necessary Glue pin rib place Glue top spar cap Slice half two 3/32 x 3 x 28 pieces C-grain balsa trailing edge TB sheeting Glue piece 16 x 28 two 1-in sheets very edge 900 angle note rib #7 plans dry glue pin sheets rear edges ribs butting -in segment against end rib Use piece 3/32 x 3 A-grain balsa top leading edge LE sheet Trim sand edge fit snugly against -in sheet LB pin place end sheet over center rib #1 Mark sheet meets rear edge top par cap unpin slice portion off sheet using straight edge use cellulous model cement leading edge spar white cabinet glue ribs because slower drying Lay bead rib first bead model glue spar front edge sheet Place sheet wing pin well leading edge roll down pin spar cap Check see ribs have pulled away jig leading edge sheet glued center section sheet between # 1 ribs goes after wing assembled Cut Continued page 114 SMOKE CHAMBER FOR MODEL AIRCRAFT 12 GAUGE STEEL-DRILL&TAP4-40 CRIMP& SILVER SOLDER END PACK THIS SECTION WITH COARSE STEEL WOOL 24 GAUGE STEEL 7/8 LIGHT STEEL TUBING ABOUT 015 WALL 24 GAUGE BAFFLE10 3/32 HOLES FLUID FEED DRILLED 900 APART SILVER SOLDER ALL JOINTS 1/8 SOFT BRASS TUBING 32 HOLES 7/8 LIGHT STEEL TUBING FLATTENED June 1981 27 smoke chamber now used author designed built after article submitted isnt referred text shown pictures Being steel holds heat much better previous aluminum unit added heat produces better smoke Also feed nozzle small holes does better job distributing smoker solution authors earlier single hole fitting Smoker solution author currently using 50-50 diesel oil Old English Lemon Furniture Polish hes still experimenting says auto transmission fluid diesel oil pre-heated wrapping tubing around exhaust twice before injection looks promisingand may give better hang time because heavier oil Commercial rights smoke chamber design reserved author Brad Shepherd Removable section cowling Its mounted ply tabs Authors prototype uses K8B 40 colorful Gee Bee Z first barrel-shaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R-1 R-2 FEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR Send $1 complete illustrated catalogDmPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 STOP- A- PROP BRAKES j 1/2A ATD Brake Kit no 101 $275 FAI CAB Brake Kit no 102 $325 used Kit no 102j B ke Kit no 103 $375 1 ea size $8503 FAI size $850 Adaptor Cox 15 kit no 107 $150 K&W ENTERPRISES 7824 Lexington Ave PA Residents Add 6% Sales Tax Philadelphia Penna 19152I Burma India theater also Chennaults boys sent home bad shape after 600 combat hours Wanted see wood Bob has around lumber mills life knows wood surgeon curing cutting wood logs Engelman spruce indigenous region Oregon Lighter Sitka quite tough Sitka some ways properly selected cut has advantages wood Bob has seenwe use agree reservation Around buy planks get ripped up Supposed Sitka brittle snaps easilywe encountered building flying Aristocrat scale Vagabond Bob pleased cut spruce white straight-grained beautiful material Srull swiped some us incredible RC Santos Dumont outdoes Japanese movie monsters OMING COMING COMING COMING PBY-5 Catalina Wing 64 Glass Fuselage s PRODUCTS 1010 Gratiot Box 161 COMING Marysville MI 48040 COMING Sitka weighs 28 lb/cu ft Engelman weighs 24 Since useful balsa weighs about 10 12 pounds such crates smaller dimensions Engleman mean dont have accept serious weight increase wood stable holding shape however workedsuper trail ing edges spars curved shaped faired keels whatever convinced Bob make wood available modelers large monsters drop him line G-S Products Box 488 La Grande OR 97850 cant remem ber first ran Bob Smurthwaite gentleman scholar true friend modelers Aileron Syndrome have disquieting very nice letter active RCer wishes remain anonymous fellow retiree lets hair down Lets just quote have building flying RC since 1975 think thing means yours simple modelsmostly three channelswithout ailerons Its kind un spoken practice club says no 2-3 channel plane except beginners course newcomer arrives minute feels comfortable flying himself must get Pattern ship least 4-ch sport plane bothers guess because Ive really fun per dollar spent 3-ch trainers First Tri-Squire modified Mk II design old deBolt Rebel probably have 300 flights two biggest thrill first time ever did touchand-go Rebel Sure have tried 4-ch planes Skylark Super Joy Stick extended success field just feel out place 3-ch ship dont say anything feeling other side coin really great bunch Im creative artistic electronically mechanically minded great help getting things work wonders situation too common might another reason tremendous growth Gliding peer pressure decrees must have ailerons must aerobatics pilot us dont want like watch planes relax flying Possibly majority pilots like aerobatics sky filled machines diving climbing twisting ran dom fashion Precision aerobatics Pattern pilots exquisite observe dont have follow suit like other things better writer once part mad rush days aerobatics developing could consecutive rolls properly fly inverted spin etc bored us Whether plane rubber-only 2- 3-channel special art fly properly measure fliers ability competence air no matter what flies Competence earns respect what Scale people urge everyone to thing what pleases heck narrow-minded dont know enough about hobby overall understand what looking Bill Winter 433OAlta Vista Dr Fairfax VA 22032 Fellows please put address letters have earnest kids cant answer because didnt give address reply necessary include pre- addressed stamped envelope use roll stamps week Help Super Akro/Shepherd Continued page 27 glue cap strips place Let panels dry overnight trim Ys-in LE sheet flush rib sheeting use inside panel door purchased lumber yard building board Draw straight line least 54 long door workbench About center line draw another short line parallel 73/s-in hind Cut piece -in scrap balsa 11/16-in wide pin jig block Pin -in piece under trailing edge tip rib Place other panel long straight line check spar TE sheet LE sheet square fit Trim necessary pin panel along straight line rear edge spar cap 11/16-in jig center section Pin -in piece under trailing edge rib #9 Epoxy ply piece TD inside top TE sheeting butting against -in TE spar Epoxy two SD pieces either side spar center section clamp 114 Model Aviation BASEBALL CAPS INTRODUCTORY OFFER See club emblem printed 7 full color tbese comfortable sport caps Order Now $500 ea Send catalog & quantity disc 2021-B THIRD STREET RIVERSIDE CA 92507 MINIMIZE HOT STUFF TUBE CLOGGING Small ID Hot Stuff tubing sup plied bottle No T-500 re placement pack dealers Large 10 Hot Stuff SuperT .. tubing safety Lock Super T bottle map-in spoutor No ST-500 re placement pack HOT STU makers Hot Stuff cyanoacrylate adhes lye Satellite City recently have forwarded us users solution sometimes-problem clogging small diameter applicator tubing prevelantin high humidi ty situations Since solution prob lem devised Mr Carl F De Filippo Winchester MA may widespread inter est reprint Enlarge 1/32-in hole spout iginal Hot Stuff round toothpick Insert 1-in length Hot Stuff Super T tub ing about / Cut small diameter tubing supplied bottle halfand insert Super T tubing Super T tubing available hobby shopspart No ST-500 bottle righted after use slightly increased weight Hot Stuff within large Super T tubing creates vac uum causing Hot Stuff remaining small tube pulled back bottle small tube ever does clog can al ways cut changing 10 taper ed spouts get larger larger clogs cut off replacing small tube ever neces sary Teflon-to-Teflon fit makes quick easy USA Inch Now offering full Schiuter line WORLDS FINEST MODEL PRODUCTS RC HELKOPTERS SAIL AND POWERED PLANES SAIL AND POWERED BOATS RIG ACCESSOtIES KITS PARTS AND SERVICE NOW FROM O4E LOCATION tEALER DISTRIBUTION PACE SETTING INSTANT DELIVERY NO HASSLE WARRANTIES WORLD FAMOUS SCHLUTER HELICOPTER BOOK clothespins until dry use Sigs Kwik Set epoxy job Epoxy RD pieces rib #1 flush bottom contour Epoxy -in leading edge joint Trim about 3/16 off long edge remaining two 3/32 x 1 trailing edge sheets glue place butting against -in TE spar Glue 1/16-in balsa joiner inside 3/32-in TE sheets center section Cut fit 3/32-in LE sheeting same manner TE sheeting fitted glue place Glue cap strips ribs #3 4 7 8 9 Bolt aileron cranks Lite Ply mount ing plates bend plates slightly conform rib shape epoxy ribs spar cap 5-mm epoxy Glue short cap strips #5 6 ribs Sheet center section between # 1 ribs glue sheeting behind spars Glue 1/16-in sheet webs between ribs trailing edge sheeting making sure wing pinned down solid jigs correct washout Once pieces place wing becomes very rigid Let wing dry overnight pinned down Remove framework door work bench jigs Epoxy WP- 1 piece ply RDs SD ply doubler Sheet top center section behind spar dont sheet leading edge between #1 ribs yet sheeting has dried sand entire frameworkI use 220-grit long block knock off high spots Pin panel time workbench upside down trailing edge polyvinyl sheet waxed paper underneath Trial-fit trailing edge piece trim necessary good fit against -in TE spar Glue place dry pin other panel down repeat procedure lift wing after has dried will notice slight reflex TE toward tips Dont sand ouV just sand joint transition 3/32-in sheet TE stock smooth top wing will smooth way Glue -in forward LE piece place Glue tip blocks have dried shape tip around rib #9 Round off front shown sand final shape 100-grit paper Epoxy WP-2 piece place after sanding TE straight Give wing final sanding 220-grit Continued page 118 June1981 115 aubwday MINIATURI 2594 North Phone 3061422 24 cm inch 32 HP 8009 RPM 6 lbs Bell Bearings Crank THE RISING STAR IN GIANT SCALE ENGINES 0 3 Ring Piston -fr S Sealed Points kg iVEAR WARRANTY WARRANTY SERVICE WORK CAN BR DONE BY Rouse MFG OR BY YOUR NEAREST ECNO-BIDRITZ PRODUCTS DEALER * * * * * * * ** ** -K -K** ** Exhaust Manifold Velocity Stack Kits Available k Fuselage Lay out fuselage sides 3/32 x 6 x 36 balsa Note sheet full length fuselage side lacks -in front end use ball point draw thrust line reference lines straight ball point straightedge make easy task Draw wing center line -in above parallel thrust line stabilizer center line 1 above thrust line parallel Lay out former locations 9Q0 triangle against straightedge thrust line After cutting out first side use pattern other side Make cut sides behind F-3 top center line root rib Make another cut also top center line rear cockpit between F4-A F4-T former locations Glue 3/16-in bottom longerons sidedont forget make right left side Glue doublers D-2 place side butting against 3/16-in longerons Use -in scrap between D-2 D- 1 gluing also between D-2 D-4 Glue D-3 place lining up top edge Lay Out cut -in slot stabilizer glue -in reinforcement Glue iffener strips side Trim -in offthe top -in triangle piece shown side view glue sides Zona Saw ROUSH MFOS SUB RETAU Dealer Inquiries Welcome P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 make series cuts triangle will bend fuselage shape Cut top portion fuselage between F-3 F4-T along wing center line remove pieces Care fully trim 3/32-in sides down doublers D-2 D-3 wing goes Lay out engine bolt holes F-2 Drill install bolts through firewall Solder short pieces music wire across head slots bolts install engine mount Tighten mount epoxy bolt heads rear firewall Pin down sides over top view Slip formers F-3 F-4 slots assure squareness fuselage Trim little off top triangles meet per top view Glue -in tail post top triangle 5-mm epoxy Slip F-4 out put 5-mm epoxy slot behind D-2 install former Epoxy F-3 place F-2 firewall F4-T has dried unpin fuselage turn over glue forward bottom -in trianglesalso LP landing gear plate Position landinggear drill mount ing holes Install blind nuts gear smear little epoxy hold place Prepare tanks install com ment Id like make after drawing plans realized Sullivan RST tank would probably work better smoker tank SS used drew plans Install smoker valve pushrod tubing note goes left side fuel tank Install throttle pushrod tubing Glue top -in triangles place over tank tanks packed foam use cable pushrods did install tubing nowusing two -in balsa sheet bulk heads between F-4 tall post keep stiff Epoxy FP- 1 pieces place maple blocks front corners radio compartment wing hold-downs also install rear hold-down ply plate block Epoxy ply pieces FP-2 sides making sure good glue joint meet F-4 ply plate Glue bottom 3/32-in sheet place grain running across fuselage Trim -in off two pieces TE stock glue tail post shown top view fuselage Tack-glue rear -in top sheet place roughly carve shape Take long straightedge using center line formers tail block draw center line fin Cut slot center line Glue top bottom front blocks fuselage Put wing saddle fuselage using center lines formers get wing proper place pin down wing Use yardstick measure wing tips tail posy shift wing slightly until measurement same both sidesthe wing square fuselage Drill mounting holes blocks -20 nylon screws Unpin wing tap holes screw wing place Trial-fit stabilizer get parallel wing square fuselage glue place Lay poly sheet over wing pin two cabin sides place flush existing sides fore aft wing Glue 3/32-in sheet inside two sides directly over wing Glue formers FT-i FT-2 place Glue blocks front back cabin section getting close square fit butt against top forward block rear -in sheet Glue F-i place using center lines get positioned properly Carve top bottom blocks rough shapes using F-i guide Remove wing Glue H-H pieces under front block rear -in sheet shown plans Mark top cabin blocks over center H-H tabs drill -in holes glue pieces dowel holes dry drill through center dowels H-H tabswhile holding cabin piece place Insert 4-40 blind nuts under H-H taper tops dowels X Acto # 11 blade receive flat-head bolts screw cabin fuselage Glue short pieces 3/32-in sheet behind F-i sides glue cheek cowl blocks place Glue -in sheet front F-i noting rough shape photo fuselage Shape cheek cowls front end around F-i small block 100-grit paper Sand entire fuselage rough shape Remove rear -in sheet behind cabin hollow shown side view glue permanently place Glue fin placeuse 900 triangles get square Using X-Acto saw blade stiffener back removed cut cowl away shown plans Glue ply cowl hold-tabs place inside top bottom blocks Glue pieces dowel removable cowl section over center line tabs done cabin top Drill holes 4-40 screws mount blind nuts ply tabs Carve inside cheeks approximately 3/16-in thickness Continued page 122 118 Model Aviation r INDIAN CITY RADIO CONTROL CLUB PRESENTS GREATER MICHIGAN MODELERS SHOW & EXPO HI PLANES BOATSCARS MANUFACTURERS STATIC OISPLAYSSWAP SHOP October 234 1981 West Eight Mie Artillery Annoiy Oak Park Michigan shape air outlets shown photos Drill drain holes underneath F-2 used Ys-in aluminum tubing exhaust effect Paint entire inside engine compartment slow-drying epoxy fuel proof after first covering engine mounting bolts 1-in lengths fuel tubing cabin interior painted everything flat black adding some talcum powder black dope fixed up dash some instru ments switches throttle mixture control Trim canopy until has good fit around Glue 1-in balsa block bottom 2-in William Bros pilot carve balsa conform plastic shape trial-fit under canopy trim block until pilot looks right After painting pilot added earphones mike glasses shoulder harness chute straps made white shoelaces little added realism Glue pilot Use two strips -in masking tape over canopy fore aft hold cabin top right placethen carefully run bead Hot Stuff glue around edge canopy joins balsa Mask offthe canopy before doing finishing Lay out ailerons straightedge ball point shown plans Carefully cut out ailerons sand bevel shown rib #7 Cut hinge slots top edge gives slight differential action ailerons moved cut flange off nylon horn gouged slot bottom aileron Hot Stuffed horn aileron Install 1/16-in music wire pushrods bend aileron links shown plans solder washer dogleg Sheet top center section wing between #1 ribs Use -in drill bit bottom up bolt holes top sheet Cut square sheet out bottom center section behind spar aileron servo mounted servo tray flat against piece -in ply used Du-Bros dual connector ball link tie two pushrods together Make tailwheel assembly shown side view using aileron horn bearing Insert piece 3/32-in brass tubing bearing insert 1/16-in music wire wheel collar under bend wire shape Mark rudder wire inserted drill -in hole epoxy piece nylon tubing hole Cut hinge slots rudder trialfit Cut hinge slots elevator stabilizer glue place same rudder Finishing Everyone has own finishing technique heres did covered wing Super MonoKote trim turn iron down just enough heat stick Super Super Try some scraps first doped rest itsanded smooththen doped some light silkspan over balsa doped few coats clear sanded 220-grit until smooth Put coat balsa filler-coat sanded off checked small blemishes holding up light filler-coat sanding until wood smooth matched cream MonoKote adding yellow small dab red small dab black white dopekept dabbing diddlin until dope matched piece scrap cream MonoKote Install radio gear keep center gravity CG within limits shown plans As mentioned beginning very responsive model control surface throws should kept within limits least test flying elevator throw measured widest point -in up -in down product review product review product review dont have shill Stricks 4-in Hobby Sander previously distributed another firm $3995 because buddies have bench sander has adjustable tilt table sits elbow especially ideal guys lot stick frameworksuch rubber schoolyard scale course has usesfastest way accur ately bevel cross-piece ends blocks etc desired angle Double-ended shaft accepts grinder second sanding disk Available accessories include 459QO miter guide grinding wheel extra adhesivecovered sandpaper various grades Youll like Sendem$Saforabrochure covering item other special values product review product review product review 122 Model Aviation GET ORGANIZED Hee s set hI 4 sludy Ides holds oh 4 years favo,te 5 agazines 4 MAG FILES $495 5e,d $495 plus $100 postage handyng DOM INOtMTRIES PO BOX 388K DOVER NH 03820 I ~Y dI1UUr fO iies R/C Goodies PO Box 192 Van Nuys CA 91 408 ailerons set -in up 3/16-in down Rudder should have throw can get hitting elevators project has given lot real enjoyment get excited time fly hope experience decide build same Have fun thats what its about Heli- Fli/Burdin Continued page 34 rotor shaft Adjust location batteries etc get location Dont change CG location accommodate flying conditions would fixed-wing aircraft Heli copter CG should always under main shaft flying conditions should adjusted trim JS couple comments before FbI 1 Your flying site should smooth asphalt grass training program Early ma neuvers require sliding across surface lift off dont want grass snagging skids struggle air 2 Choose flying site gives some peace work interruption interested bystanders cant concentrate people asking questions remember youre little dangerous training dont deserve audience yet dont want either 3 Most manufacturers have wide stance landing gear recommend training Revolution 40 assembly manual described simple set skids made out -in plastic water pipe Its cheap easily made strong fixture wide stance prevents tip-overs early days training turn saves rotor blades Helicopters OK airalmost Check List Pre-flight 1 Flight kit stocked spare parts tools 2 Radiocontrol range check 3 Radiofull battery charge 4 Correct weather flight 5 Main rotor tracking 6 Transmitter trim settings Post-flight 1 Check nuts bolts linkages 2 Main rotor coning angle lead/lag pitchas required 3 Tail rotor drive mechanism 4 Servo mounts condition 5 Fuel system 6 Bearing lubrication 7 All other alignments HELI-FLI LEVEL 2 maneuvers level accom plished calm air Task Descriptions Measurement Criteria 1 The student will trim cyclic yaw controls allow zero altitude hover ZAH transmitter trim levers neutral position 2 The student will able maintain position orientation ofthe Helicopter within al-ft square executing ZAH maneuver Position orientation will maintained tail-in period minute 3 The student will able maneuver Helicopter over triangular course 6-ft GUSMA io Controlled Hand Launched Gear Up Scale Model Aircraft June 1981 123 HENDERTOON