NO OCR TEXT NO OCR TEXT power touch-down accomplished very trainer-like pace Hi-Tech 2000 2001 both definitely easy land control vane Hi-Tech 2001s fan duct produced instantaneous responses commands very slow flying speeds during some aborted landings reaffirm ing decision use vane assist canard instead depending ele vons Hi-Tech 2000 Inverted flight very stable spite fact wing canard have lot twist upright design necessity slow flight After vane control throw reduced aircraft became less sensitive Subse quent flights showed Hi-Tech 2001 pleasant predictable airplane fly believe because Hi-Tech 2001s excellent low-speed flight qualities predictable aerobatic perform ance anyone can handle advanced aileron trainer can also fly aircraft just have prepared dif ferent takeoff characteristics ducted fan model Ducted-fan models accelerate much slower prop-driven coun terparts similar weight extends runway length required get craft airborne Also ducted-fan models have advantage prop blast elevator rudder make effec tive slow flying speeds also creases takeoff landing distances conventional ducted-fan models must wait longer before control sur faces become effective addition control vane wake fan ex haust Hi-Tech 2001 alleviates lat ter problem However lightly-built aircraft will get air hurry provide snappy performance Hi-Tech 2001 fills bill Canard philosophy aircraft cient Wright brothers flew have widely accepted ever due efforts Burt Rutan few other home-builders canard air craft now becoming popular better understood Subsonic canard air craft can provide improved fuel effici ency aircraft safety better stall charac teristics allow usable space Len VIOW fuselage belly fan unit removed throttle belicrank hangs inside shell Right fan unit uses up space just should lower nacelle seen beyond resting temporarily wing photographs author Len lip tan unit position suer tne Till 8510 vein juece neve buu 818rted through upper fuselage throttle belicrank has inserted through fan shell engaged engine carburetor Right Note aileron pushrods Nyrods concealed wing/fuselage fillet enter fuselage about intersection wing leading edge fuselage 32 Model Aviation angie tnat see getwuen ins merier luemuw isle uuusauj problem long firm engagementof spinner maintainee fuselage cargo passengers found conventional designs Canards transonic supersonic aircraft im prove fuel efficiency important iy can give aircraft manue vering flexibility Control surfaces conventional wing-first aircraft produce rotations ie elevators rotate nose up down ailerons rotate roll left right rudders rotate yaw left right Canard surfaces other hand moved conjunction other con trol surfaces can produce translations stronger rotations bit much Let explain Canards coupled moved together another device produce rotation trailing edge wing elevons can produce very adequate pitch control Canards decoupled canard leading edge up elevons trailing edge down pro duces net increase lift moving air craft perpendicular path flight vertical translation Canards coupled rudders can provide stronger turning rotations canards decoupled rudders air craft can move sideways changing heading Describing canards per form last two functions little beyond scope article Please believe work Although decoupled control modes work low Reynolds Number world have found very useful sport flying responsive enough get out trouble faster can get Hi-Tech story Hi-Tech 200x series aircraft designed aid computer structurally aerodynam ically series sweptwing canard-type aircraft have ex perimenting over last few years intention produce aircraft looks different uses unusual flight controls includes much modern technology materials power plants electronics possible setLeft Note air inlet inlet dish also scalelike Robart iandlng gear covers Right Looking down iniet see fan blades very accessible have starter extension shaft spinner cone Ductedfan power very workable system Left Wing tip sidewinder missile installed two countersunk No 4flat-head slotted wood screws iie screws noia weii irns cation Right Detail dual nose gear made Robart scale landing gear covers Note one-loop spring nose gear wire October 1984 33 1 . .,ome aluminum auuuI Huund lighter authors,shown ocover has fiberglass fuselage lighter weight isa big au n improveu erformance 2001 ting Hi-Tech development 1979 fresh out college took first engineering job Grumman Aerospace Corp Employed wind tun nel test engineer introduced some complexities making Mach 2 aircraft fly low speed Grummans designs intrigued much decided build flying model configuration large doubledelta/canard aircraft lot things against flying model too much wing leading edge sweep small wing aspect ratio chord/span closecoupled pitch control flew albeit rather poorly first however application some aerodynamic electronic tricks flight properties im proved model eventually became victim pilot disorientation over cast day About year half later working Lockheed Missiles Space Co presented myself slopes California similar aircraft Sailplane form design re duced wing sweep angle increased wing canard area left off jet engine nacelles introduction elevons assist canard pitch con trol aircraft flew superbly medium heavy winds fast turned very tightly refused spin addition could maintain very high angles attack dropping wing losing pitch control Realizing configuration showed possibilities being good powered model set myself task designing started Hi-Tech 200x series Hi-Tech 2000 closely resembles fea tured aircraft though designed around expendable foam-fuselage-core construction care shaped covered two layers glass cloth epoxy resin After exterior filled sanded smooth foam removed lacquer thinner Because inex perienced producing light strong glass fuselage final weight air craft 5 lb proved bit heavy fan designed about problem later past winter really kept ground ed started design construction second balsa-planked aircraft Hi-Tech 2001 described before first ever flown Hi-Tech sized fit RK-20 ducted-fan unit new 05 Max 25 Left lower nacelle attached via aluminum mounting tabs Right Sullivan Products Hi-Torque starter 91/z-ln extension 34 Model Aviation author isnt newcomer RC canards photos submitted omitted space reasons 11-lb pylon-mounted 60 engine tractor double-delta canard 1979 flew says sure lot work Refinements design led Hi-Tech 2001 shown above other photographs ie thrust-vectoring vane seen above left below right covered Monoote positioned between two vertical tall mounting rails vane hinged two iarge T-pins 25% chord go through rails vane I/B SHT RTBS 1/4 SHEET UPPER AND LOWER AILERON SUB SPAR MED BALSA TIPS 1/32 SHT ENTIRE VERT TAIL I/A SHT LE I/S SHT FIN POST r 1/16 SHT ENTIRE WINO CONTROL HORN FROM 06 ALUM SHT RUDDERS OPTIONAL 1/16 PLY CROSS BRACE STIFFENERS I/B BRASS TUBE SLEEVET-PIN FOR VANE PIVOT SANDED TO AIRFOIL SHAPE FOR VANE /2 X 5/8 VERT I/B 00 FLATTENEDTAIL MOUNTING RAIL BRASS TUBE /32 SHT BLOCKSI/B SHT RIBS ENTIRE CANARD I/B X 1/4 SPRUCEvs UPPER AND LOWER KEELS\5 BALSA BLOCK--/ 1/2 SHT LEMED BALSA I/B LO WIREAFT SPAR BOX BEAMTIPS ICONSTRUCT FROM I/B PLY SIDES L BALSA AND FILLERAND 1/16 PLY TOP AND BOTTOM WINO/FUSE BLENDINGFRONT SPAR BOX BEAM SIMILAR OPTIONAL FUSE FORMERS2 1/4 DIAI/B X 1/4 SPRUCE UPPER ITYPI 3/32 SHT 3/B X 3/4 HAROWDO MAIN GEAR AND LOWER SPARS PLANK WHEELS ENTIRERADIO HATCHLO BLOCK FUSELAGE SIDE REF MED BALSA TIP CANARD RIBS PIVOT1/16 SHT BALSA SOLID BALSA NOSE 2 DIA NOSE GEAR OUA OP IDNA HI-TECH 2001 RK-20 OUCTED FAN AIRCRAFT SPAN 3878 LENGTH 4969 WINO AREA 425 50 IN WEIGHT 45 LBS POWERPLANT OS MAX 25 VF OF W/ MACS PRODUCTS WIZARD PIPE CONTROL FUNCTIONS CANARD/VANE THROTTLE AILERON W/COUPLEO NOSE GEA DRAWN BY TOM HUNT 0 C 4 0 0 CD ~1 0 Left Bottom nacelle laid out upside down building board Note mat mne Torwar-cantec Tormer mistaeniy sianmea Torwara Instead aftand wasnt corrected until after nacelle planked Right Nacelle planked pinned building board VF DF engine chosen power because time new engine designed specifically ducted fans MACS Products tuned pipe also sanded extra power will notice dihedral canards anhedral wing outwardlycanted vertical tails canard dihedral attempt keep flow air behind canard upsetting board section wing anhedral wing used reduce some roll stability achieved high leading edge sweep angle outward cant vertical tails purely aesthetic model although does help yaw control reduce drag transonic alrcraft Hi-Tech 2000 utilized elevons help canard pitch control Hi-Tech 2001 utilizes movable vane wake fan exhaust assist canard instead elevons purpose enable pitch control well below airspeed canard wing elevons no long er effective radio chose control prototype new Airtronics Championship Series seven channels radio familiar has programmable features servo reversing expo/linear rudder/aileron coupling end point adjustment dual rates plug V-tail mixing board also opportunity install fly aircraft AMAs experi mental 926 MHz radios loan George Myers Bob Aberle evaluation Construction Although configuration aircraft very different usual RC model its construction conventional should have very little difficulty duplicating airplane Con struction poses no real problem novice builder could first fan aircraft because Hi-Tech 2001 first except first prototype Hi-Tech 2000 built concur rently Build yourself go dog fight flying buddies airplane looks 10 15 years ahead its time Fuselage Make yourself kit parts Begin cutting out fuselage form ers including 08 sheet aluminum engine/wing bearers Also cut out Y8 ply fuselage sides Cut spruce top bottom keels length top half fuselage built flat workbench nacelle split line upward nose formers will have blocked-up appropriate 36 Model Aviation Fuselage ocuva varnu.y uut cuEE 75 LflU 1/16 1/4 sheet balsa Above Fuselage framed fuwu lage/nacelle split line upward top bottom keels added Above Forward nacelle has cut away after finishing ward Internal duct sheeting aft internal duct sheeting prog ress Note temporary brace across aft end Right Forward nacelle Inlet section has glued fuselage Aluminum wing/ engine bearers have positioned glued Forward upper fuselage Internal walls also Installed stage Left Canard framed Is-In wire pivot block installed Note lower rib alignment tabs still point High Canard fully sheeted 1/32 hard balsa Being front canard surfaces subject substantial abuse Tip blocks added sanded Left Rectangular holes box beams have cut wing being trial-fitted fuselage Right Satisfied fit box beams secured wing landing gear blocks fitted glued place lower wing sheeting can installed amount maintain alignment remaining formers stood upright directly building board sure glue F3a F3 F5a F5 must separate later form radio hatch may time crack F4 top pW sideWall facilitate radio hatch removal after fuselage has planked install 08 alu nilnum formers yet Plank entire upper fuselage %2-in strips 3/-in width Build lower nacelle upside down much same manner up per fuselage After outside lower nacelle has planked internal duct lines can formed out A6 sheet fan unit temporarily place suggest lay internal sheet balsa left right halves possibly thirds depending upon softness balsa Install roughly shape balsa block fuselage inlet dish form upper inlet exhaust walls same manner lower nacelle point cut lower nacelle three pieces shown plans Dress mating edges extra sheet balsa and/or filler material Glue th ward aft parts lower nacelle upper fuselage Sand air inlet lip approximately A-in radius Install /16 ply cross braces rear add strength rear fuselage Cut notch upper spruce keel accept two aluminum formers will also need cut ply fuselage sides fit formers sure spac ing two formers complies inside dimension between two external flanges fan unit formers take wing load help secure fan unit sure properly aligned fastened fuselage glued first mix ture baking soda Hot Stuff backed up some RTV silicone sealer Glue nose block sand entire fuselage smooth cut off radio hatch Dress edges add /16 ply alignment tabs refit fuselage ke-sand fuselage time add balsa filler Install A-in x 2-in-wide fin mounting rails against side fuselage Cut two rib fillers A-in sheet balsa identical WI glue fuselage sides make sure proper incidence left right achieved October1984 37 Left Wing completely framed ready upper 1/16 sheet Ing Above Plywood box beams constructed fitted alumi num wing mounts Note 1/4 sheet balsa Wi glued fuselage side acts incidence jig Design well thought out S2 SPRUCE LMEP BLOCK NOSE ROSS SPEET OELERRNCR BALSA KILLERS SEE SlEET 2 /AINE IS INNPAF ARL S,EETr UTAO OP UEMT PANEMOUNTING PAILS ON 20 LIRE PLR SIUKSI ELSELASE FILET 0L FUSERSE FOROLOSASPtEBOET*LSCAEW 0A SIC K PT UNLESSPRADWORO NACELLE OThERISE SPECIFIEDASOKOIKS BLOCK TAO ArEA SE352 PLANK IOROFO 0010 SEOR LESB TP 0EElFl FRENTEN 00CCINCBEBPOAARRSPLIT RAIL REElF 00 330PLANKING ERS KEO IOWAAnAL FROM ROAD BALSATOP 01KW EBB' OEA F ER$FOT 2EARESA-oKIlO SCAMP '0 SOEET7 ANTE ANAL WALL ENSUPPBBT /-2~ -- F IROABASO COSARO INSIDE SLAEMCE UC ROOSSO NOSE 010DB OSCO ISLPT OAEO AlSOTB -AR--/06 ALUM ASALE LEAP DOER POINT TN NOR-ANJ EPOAIED AIEI2B BALSA ALOES BRI4 SPAACE SBIEEEOERI LDMERAIUEELLE SALARy 20WIPEFILLEROLONS INSIDE ABC DE NACELE SEE FM BOAC FI TbFOR BEOAA332 OLASRINNAC SPEEOIND-CUT NOCELLE TO SPIT PACK EBBOCO-EBB 050 SUE AFO CUT CACELE BETACENSSPEll LONESEOBIAN TA FUSELUSE ERS ANO SLOE EMO 21010NOSE SLAP ALOE OPTISKO2SECTIROI 00 ELSEIHrTECH 200/ -AROB CBROAIKB S/3D PLANPIBRIROTE LEFT SOAK DAIBTED EBB ELAPORAU 20 010 MAIN SEAM APP ENOOES OUTLIKE OF IIMEND OF LOAKOLBBEV8PA 2ThMAO PER FUSERAK SOAKSSPRUEK PEEL AAn8r /OAKAAP El000ALL/BAj. M S-BB-0A easiest way put centerline rib balsa measure up nacelle split line proper amount leading trailing edges rib incidence gauge assembling wing fuselage Put assembly aside now work fly ing surfaces Wing Cut Out formers being sure include wing twist alignment tabs leading trailing edges cut out wing spar box holes inboard ribs yet just mark location rib Cut upper lower spruce spars balsa leading edges length Lay lower spar plans Pin down root Place pin rib position over plans pulling lower spar up place rib Glue assembly Install upper spar leading edges being sure glue joint wing remains flat table Also glue 1/1 x A-in aileron hinge line balsa place Sand sub spar follow shape rib wing still pinned down board around outside sheet entire upper surface /l6 sheet hard balsa Cut length shape landing gear blocks Route center block A-in piano wire Drill through block assembly near outboard end same A-in wire Secure assembly rib lower spar large doses epoxy Sand blocks match lower wing ribs Using epoxy adhesive construct wing box spars ply sides 1/16 ply top Left forward wing fuselage intersection built-up scrap balsa filler materIal dish shape lower fuselage just ahead inlet lip effectively increase capture area inlet Right upper fuselage has cut away radio hatch Similar underside upper joint wing fuselage blended scrap balsa pieces filler 38 Model Aviation B B B C Full-Size Plans Available. See Page 180 DILCR% TRAVEL yCVT UN I2 TE 510CR UIDA AD SPAR TAR IDA V IDAAILERAR SAR SPRUCE UPPERTARDA FTCAAPWVAAHE1 TRUE VICA Ffl RALSA CANARDCI III PIVOT BLACA III V RALSA CDUPPER AND CANER SPAR NATE- Ri VERTICAL AND CANARDFThDADVRAM AIRS DA PEA BALSA DA P SIDESI IDIR PLO TOP APE -PlO REPj PLT P015 FRONT SPAR ADA r~ ru-SHORN TRUE VIED TAOTE NASRART E II REPTAPICRL INBOARD AIRS SECTION APT SPDA ADA. TYPICAL VERTICAL OVIL RECTIANRPA BALSA TIP SARCED TA VIRPAILIA VA BRASS VANE CARTADE OPEOR- BALSA PIN PAST~BDNABOTE RINSE - TER UPPER VILERAN SAN-SPAR DDTVTED INTS TRU VIEBVERTIEB. TAILhAS BEEN INSTALED REMOVE BOARTIRS RAILS.'L..I THIS SECTION INSTALL LAMER PETE BASADAT VALERAS SUB PDD NEAT AVANTIND RAIL REPDUN C CANTROL PABTATOP POD DADSD6 VERTICAL TAILTARVATRECTADINO SANE REP 00 3 bottom aluminum formers tached fuselage used jig coat aluminum lightly Vaseline avoid gluing box spars spars slid onto fuselage formers open up wing rib until good fit obtained Slide wing onto fuselage Use Y4-in-thick wing rib glued fuselage incidence gauge wing has built correctly point ribs box spar passes through have properly marked cut wing anhedral will properly built Check equal left right secure box spars onto wing ribs epoxy Sand plywood balsa pro trudes below bottom rib Install lower aileron sub-spar sand contour Cut off remaining lower wing twist alignment tabs sheet lower wing careful add remove built-in twist Cut balsa block wing tips shape glue wing weap ons destruction version wing tips necessary good flight performance two-tone gray camou flage paint scheme gives inipres sion aircraft actually ventory US Air Force Once entire wing has sanded smooth leading trailing edges have shaped cut aileron wing Cut 1A-in-wide slot along aileron hinge line inboard aileron %2-in wire aileron torque rod Bend left right torque rod secure place Sand 15 angle top aile ron leading edge Cut slot top sur October 1984 39 Left Nyrods snake through left right aide wing/fuselage intersection both aileron thrust-vectoring vane control Above Framing vertical tail Note centerline refennoc marked backof leading edge same trailing edge Left what completed wing/fuselage fillet should look like after full shaping sanding preparatory covering finishing Right Vertical tall mounting rails 1/16 ply fuselage braces have installed thrust-vectoring vane will hinged rails Left Cutawaythe mounting ralisto accept 06-in aluminum nacelle mounting brackets Right Dual pushrods oneto canard surface operated side elevator servo single pushrod also runs aft thrust-vectoring vane elevator servo Aileron attachment standard providing second pushrcti nose gear receiver forward servos rectangular 500 mAh battery placed forward receiver Theres much room spare its adequate purpose face aileron accept aileron torque rod install time canard surface built much same manner wing over look 30 twist canard necessary good flight performance few things different wing construction 1 /-in pivot wire hard balsa mounting block installed sanded shape before sheeting done 2 Sheeting A2 harda pen thecenterline down leading edge balsa instead A6and fin post pin plans Use reference line up rib Use favorite super glue cyanoacrylate suspend ribs off board tween leading edge rudder post Sheet side A2 hard balsa glue rudder tip block sand shape vertical tails sparless because large solid balsa trailing edgewhich could cut off rudders re desired have found much use canard designs Construction begins cutting out rib Next cut length slightly wider leading edge rudder post Scribe mark Assembly Secure canard pivot blocks Continued page 137 7 40 Model Aviation Left This AMAs oo MHz radio syatems loan George Myers Bob Aberle testing Flown Hi-Tech 2001 radio frequency may portend future RC mod eling Above Coming home after its first flight Hi-Tech 2001 slightly nose-high surprisingly slow easy control joined panel upside down None other John Hunton sent definitive ar ticle fully illustrated foam wing stiff ness strange things can happen John wing skinned stiff Ken Willard R CMs peerless Sunday pilot intrigued sending series tough questions Maybe hell solve riddle though doubt anyone ever will have suspicion up-aileron spoiling thats long long shot letters about LeCrate gentleman Panorama City CA says have using name- issues July issue too much did sez large letters CRATE initials LE wrong cant have everything once com mented name Crate call him Red Must fun flying name Red Crate Anyhooo Red out modeling 40 years too bad didnt know about Purple Plan next time please least make Mr Crate suggests Red got RC fixed- rotarywinged models about four years ago says thinks doomed perpetual novice So say us Bill Winter 4432 Altura Ct note change 4426 please Fafrfax VA 22030 HI-Tech 200lIHunt Continued page 40 fuselage epoxy Drill through fuselage block A2 drill 50 angle horizontal Insert Y-in ID brass tube drilled hole canard pivot bearing Glue place hardwood nose gear block epoxy Drill A2-in hole -in ID brass tube nose gear pivot bearing using offset nose gear may wish drill bearing hole slightly off set bring center wheels onto centerline aircraft point decide whether wish permanently mount wing have removable have Pinto wagon plenty space one-piece model size opted glue wing fuselage arrangement allowed bury control rods ailerons thrust vectoring vane wing fillet pushrods enter fuselage radio compartment just about wing root leading edge used red Nyrods because ability conform tight corners After pushrod sleeves temporarily glued place smear favorite fillet compound juncture wing fuselage throttle pushrod may have pass through forward aluminum fuselage former must drill hole through former make small drill through middlenot through edge Remember former takes quite bit wing load Aluminum can fail just easily plywood put stress concentrator poorly drilled hole sharp corner high-stress area get throttle pushrod engine compartment radio com partment first plunged A6 wire rod sharpened point through obstructing walls followed down wire front end red Nyrod slightly sharpened sander point invert model add balsa fillers forward fair ver tical tail mounting rails rails also help align lower nacelle Cut bend two L-shaped aluminum 900 angles 06 sheet Secure two angle pieces side lower nacelle about midway between two aluminum fuselage formers Drill % hole through horizontal leg bracket mounting screws Relieve vertical tail mounting rails lower side wing accept aluminum brackets Remove wing skin directly underneath brackets instal small hardwood block accept mounting screws Build-up long leading edge fairing between canard wing using bits balsa may omitted adept forming inside conical curves feel deletion will affect flight qualities satisfied exterior shape craft may begin cover ing and/or painting Cover install ailerons using upper leading edge hinge line like use MonoKote hinges because strength adequate because form aerodynamic seal between upper lower surface improves aileron control may use other hinges long seal gap Sand l0 angle bottom vertical tails Cover tails glue top mounting rails assuming mounting rails have covered covering directly under tails has removed thrust vectoring vane con structed proper length piece 1 A-in trailing edge stock roughly shaped form symmetrical airfoil pivot simply two large T-pins stuck through vertical tail mounting rails heads cut off pair snips pivot posi tioned like all-flying surfaces should 25% back Mean Aerodynamic Chord MAC case constant chord just 25% back leading edge done alleviate some aerodynamic load imposed servo bellcrank simply right angle piece aluminum super-glued vane Canard nose gear bellcranks fabricated 04 sheet brass cut sanded shape soldered -in wheel collar flat ground shaft setscrew have posi tive lock properly locate bellcrank onto shaft Continued page 140 October1984 137 Funster. versatile performing aircraft broadest range capabilities ever seen RC Modeler Magazine st 1982 HLAIUb MODDY LODDY RCM FUNSTER 40$6450 List price $7695 72 wing span 840 sq wing area 575 pounds approximate weight 1575 oz per sq ft wing loading fuselage length 55 4 preferably 5 6 channels 40 engine Hobby Lobbys RCM FUNSTER conventional balsa plywood model airplane kit based upon Dick Tichenors plans construction article August 1982 issue RC Modeler Magazine Kraft RIC Electronics PERSONAL SERVICE BY MILT ERB SPECIAL LOW PRICESService charge repair and/or checkup system four servos $2975 maximum Extra servos$250 Parts return shipment extra FREQUENCY CONVERSIONS$2500 per system 50% off repair checkup SPECIAL IZINGin competition systems frequency conversions FM equipment CUSTOM REPAIRSAll systems given personal attention test report comments careful cost control effort made return system likenew better operating condition HEATHKIT CUSTOMERSNew frequency conversions now available plugin systems$3500 per system AUTHORIZED FACTORY SERWCE FOR 1685 Beckwith Dr Hudson OH 44236216 655-2278 Hi-Tech 2001 IHunt Continued page 137 aileron belicrank simply piece %2-in ID brass tubing flattened end round end slipped over short vertical stub end aileron torque rod soldered few X6-in holes drilled through flattened end brass tubing holes ac cept aileron pushrods intro ducing unwanted aileron differential such obtained standard nylon torque rod belicrank Bend landing gear legs A-in piano wire secure glue wish have gear removable secure screw-on straps will also use OS Max 25 VF DF have suggestion connecting pushrod throt tle Cut 175-in length A6-in ID brass tubing Push over hex nut right side carb squeeze pair flats tubing will index tubing keep slipping around hex nut Drill %-in-dia hole through fan shell line rotating drum carb Trim brass tube just short enough solder brass bellcrank length must determined low throttle position drum translates out slightly rotated Drill 1A-in-dia hole down tube through bellcrank gives access low throttle adjustment screw Drill few X6-in holes through bellcrank ac cept nylon clevis whatever other form attachment choose use Remem ber whatever method use actuate throttle whole lot room between fan shell inside wall watch binding last subject needs ad dressed start engine once fan has installed aircraft An extension shaft added conventional Sullivan Hi-Torque starter will get engine started least amount trouble 9- 10-in shaft can cut down Byron Originals extension shaft used start Byron pusher-type fan-jets up tail cone can fabricated scratch have lathe choose cut down Byron extension shaft cut 9- 10-in length starting cone end Retap cut-off end lA20 thread approxi mately %-in deep method starting engine pro duces slight off-center engagement about 70 10 C have found long firm engagement starting cone spinner maintained starter will turn engine freely slipping off conclusion would like thank George Myers Radio Technique contrib uting editor Model Aviation Bob Kress Kress Technology Bob Aberle Flying Models Wally Maclister MACS Products expert assis tance instrumental making project success Radio TechnlquelMyers Continued page 43 helicopter flight simulators plus model airplane design software popping up everywhere didnt know about wont long before will have have kit order considered types Permit small plug Kaypro have son Geoffrey has another work well wouldnt Looking what get price consider ing past performances recommen dations modelers considering such purchase 1 completely dark buy Commodore 64 about $200 very selective about what add because accessories expensive 2 looking maximum computing power minimum cost buy Kaypro 2 includes software youll need $1295 Kaypro 2X cludes printer cable well $1895 New Model Magic Products 25% fighter Mode Magic Epoxy Plus 2 Part 8 Mm Use anywhere two pat epoxy used Light weight Sandabie Carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves like basswood! 8 fi $895 See dealer &at write cat Nik Model Magic Plociicts k-ic -P0 Son 19754 51Paj MsI 55119 715425-1397 140 Model Aviation / IA 5321 E R@sedile Ft Womil TX 75112 CORRECTION fullpage advertisement page 23 September issue Model AvIatIon should have described J C Cap 21 Ready-Built1/64Plywood Covered Wing Also 40 size JC Trainers special price $5995 $995 Model Aviation regrets error GIANT RIC SCALE PLANS SOP55ITU 1*56010 aSnttO Se124 SOp pus * SOtwtTe TASLOIO2 I64 Op.StIOS ppUSA *06015*52C ItOP Se.52eUOppUSA P06015 neta t63 rAp$OSeeppUSA PJU CORSAIr2 PSr SP,SPSppUSA CUPTISS P402fl CC SeSSCOOppUSA PIP SIARCAr2 IlASpSOC WppUSA Fibetglass ColOlings & Canopies UcUitUhie Send StUmp cetaited Urochures Giant Scale Accessories Ocr PlUtro sect PostPaid within USA Nick Ziroli 29 tdgor Drie. SnithSown NY 15787 USA
Edition: Model Aviation - 1984/10
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 137, 140
Edition: Model Aviation - 1984/10
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 137, 140
NO OCR TEXT NO OCR TEXT power touch-down accomplished very trainer-like pace Hi-Tech 2000 2001 both definitely easy land control vane Hi-Tech 2001s fan duct produced instantaneous responses commands very slow flying speeds during some aborted landings reaffirm ing decision use vane assist canard instead depending ele vons Hi-Tech 2000 Inverted flight very stable spite fact wing canard have lot twist upright design necessity slow flight After vane control throw reduced aircraft became less sensitive Subse quent flights showed Hi-Tech 2001 pleasant predictable airplane fly believe because Hi-Tech 2001s excellent low-speed flight qualities predictable aerobatic perform ance anyone can handle advanced aileron trainer can also fly aircraft just have prepared dif ferent takeoff characteristics ducted fan model Ducted-fan models accelerate much slower prop-driven coun terparts similar weight extends runway length required get craft airborne Also ducted-fan models have advantage prop blast elevator rudder make effec tive slow flying speeds also creases takeoff landing distances conventional ducted-fan models must wait longer before control sur faces become effective addition control vane wake fan ex haust Hi-Tech 2001 alleviates lat ter problem However lightly-built aircraft will get air hurry provide snappy performance Hi-Tech 2001 fills bill Canard philosophy aircraft cient Wright brothers flew have widely accepted ever due efforts Burt Rutan few other home-builders canard air craft now becoming popular better understood Subsonic canard air craft can provide improved fuel effici ency aircraft safety better stall charac teristics allow usable space Len VIOW fuselage belly fan unit removed throttle belicrank hangs inside shell Right fan unit uses up space just should lower nacelle seen beyond resting temporarily wing photographs author Len lip tan unit position suer tne Till 8510 vein juece neve buu 818rted through upper fuselage throttle belicrank has inserted through fan shell engaged engine carburetor Right Note aileron pushrods Nyrods concealed wing/fuselage fillet enter fuselage about intersection wing leading edge fuselage 32 Model Aviation angie tnat see getwuen ins merier luemuw isle uuusauj problem long firm engagementof spinner maintainee fuselage cargo passengers found conventional designs Canards transonic supersonic aircraft im prove fuel efficiency important iy can give aircraft manue vering flexibility Control surfaces conventional wing-first aircraft produce rotations ie elevators rotate nose up down ailerons rotate roll left right rudders rotate yaw left right Canard surfaces other hand moved conjunction other con trol surfaces can produce translations stronger rotations bit much Let explain Canards coupled moved together another device produce rotation trailing edge wing elevons can produce very adequate pitch control Canards decoupled canard leading edge up elevons trailing edge down pro duces net increase lift moving air craft perpendicular path flight vertical translation Canards coupled rudders can provide stronger turning rotations canards decoupled rudders air craft can move sideways changing heading Describing canards per form last two functions little beyond scope article Please believe work Although decoupled control modes work low Reynolds Number world have found very useful sport flying responsive enough get out trouble faster can get Hi-Tech story Hi-Tech 200x series aircraft designed aid computer structurally aerodynam ically series sweptwing canard-type aircraft have ex perimenting over last few years intention produce aircraft looks different uses unusual flight controls includes much modern technology materials power plants electronics possible setLeft Note air inlet inlet dish also scalelike Robart iandlng gear covers Right Looking down iniet see fan blades very accessible have starter extension shaft spinner cone Ductedfan power very workable system Left Wing tip sidewinder missile installed two countersunk No 4flat-head slotted wood screws iie screws noia weii irns cation Right Detail dual nose gear made Robart scale landing gear covers Note one-loop spring nose gear wire October 1984 33 1 . .,ome aluminum auuuI Huund lighter authors,shown ocover has fiberglass fuselage lighter weight isa big au n improveu erformance 2001 ting Hi-Tech development 1979 fresh out college took first engineering job Grumman Aerospace Corp Employed wind tun nel test engineer introduced some complexities making Mach 2 aircraft fly low speed Grummans designs intrigued much decided build flying model configuration large doubledelta/canard aircraft lot things against flying model too much wing leading edge sweep small wing aspect ratio chord/span closecoupled pitch control flew albeit rather poorly first however application some aerodynamic electronic tricks flight properties im proved model eventually became victim pilot disorientation over cast day About year half later working Lockheed Missiles Space Co presented myself slopes California similar aircraft Sailplane form design re duced wing sweep angle increased wing canard area left off jet engine nacelles introduction elevons assist canard pitch con trol aircraft flew superbly medium heavy winds fast turned very tightly refused spin addition could maintain very high angles attack dropping wing losing pitch control Realizing configuration showed possibilities being good powered model set myself task designing started Hi-Tech 200x series Hi-Tech 2000 closely resembles fea tured aircraft though designed around expendable foam-fuselage-core construction care shaped covered two layers glass cloth epoxy resin After exterior filled sanded smooth foam removed lacquer thinner Because inex perienced producing light strong glass fuselage final weight air craft 5 lb proved bit heavy fan designed about problem later past winter really kept ground ed started design construction second balsa-planked aircraft Hi-Tech 2001 described before first ever flown Hi-Tech sized fit RK-20 ducted-fan unit new 05 Max 25 Left lower nacelle attached via aluminum mounting tabs Right Sullivan Products Hi-Torque starter 91/z-ln extension 34 Model Aviation author isnt newcomer RC canards photos submitted omitted space reasons 11-lb pylon-mounted 60 engine tractor double-delta canard 1979 flew says sure lot work Refinements design led Hi-Tech 2001 shown above other photographs ie thrust-vectoring vane seen above left below right covered Monoote positioned between two vertical tall mounting rails vane hinged two iarge T-pins 25% chord go through rails vane I/B SHT RTBS 1/4 SHEET UPPER AND LOWER AILERON SUB SPAR MED BALSA TIPS 1/32 SHT ENTIRE VERT TAIL I/A SHT LE I/S SHT FIN POST r 1/16 SHT ENTIRE WINO CONTROL HORN FROM 06 ALUM SHT RUDDERS OPTIONAL 1/16 PLY CROSS BRACE STIFFENERS I/B BRASS TUBE SLEEVET-PIN FOR VANE PIVOT SANDED TO AIRFOIL SHAPE FOR VANE /2 X 5/8 VERT I/B 00 FLATTENEDTAIL MOUNTING RAIL BRASS TUBE /32 SHT BLOCKSI/B SHT RIBS ENTIRE CANARD I/B X 1/4 SPRUCEvs UPPER AND LOWER KEELS\5 BALSA BLOCK--/ 1/2 SHT LEMED BALSA I/B LO WIREAFT SPAR BOX BEAMTIPS ICONSTRUCT FROM I/B PLY SIDES L BALSA AND FILLERAND 1/16 PLY TOP AND BOTTOM WINO/FUSE BLENDINGFRONT SPAR BOX BEAM SIMILAR OPTIONAL FUSE FORMERS2 1/4 DIAI/B X 1/4 SPRUCE UPPER ITYPI 3/32 SHT 3/B X 3/4 HAROWDO MAIN GEAR AND LOWER SPARS PLANK WHEELS ENTIRERADIO HATCHLO BLOCK FUSELAGE SIDE REF MED BALSA TIP CANARD RIBS PIVOT1/16 SHT BALSA SOLID BALSA NOSE 2 DIA NOSE GEAR OUA OP IDNA HI-TECH 2001 RK-20 OUCTED FAN AIRCRAFT SPAN 3878 LENGTH 4969 WINO AREA 425 50 IN WEIGHT 45 LBS POWERPLANT OS MAX 25 VF OF W/ MACS PRODUCTS WIZARD PIPE CONTROL FUNCTIONS CANARD/VANE THROTTLE AILERON W/COUPLEO NOSE GEA DRAWN BY TOM HUNT 0 C 4 0 0 CD ~1 0 Left Bottom nacelle laid out upside down building board Note mat mne Torwar-cantec Tormer mistaeniy sianmea Torwara Instead aftand wasnt corrected until after nacelle planked Right Nacelle planked pinned building board VF DF engine chosen power because time new engine designed specifically ducted fans MACS Products tuned pipe also sanded extra power will notice dihedral canards anhedral wing outwardlycanted vertical tails canard dihedral attempt keep flow air behind canard upsetting board section wing anhedral wing used reduce some roll stability achieved high leading edge sweep angle outward cant vertical tails purely aesthetic model although does help yaw control reduce drag transonic alrcraft Hi-Tech 2000 utilized elevons help canard pitch control Hi-Tech 2001 utilizes movable vane wake fan exhaust assist canard instead elevons purpose enable pitch control well below airspeed canard wing elevons no long er effective radio chose control prototype new Airtronics Championship Series seven channels radio familiar has programmable features servo reversing expo/linear rudder/aileron coupling end point adjustment dual rates plug V-tail mixing board also opportunity install fly aircraft AMAs experi mental 926 MHz radios loan George Myers Bob Aberle evaluation Construction Although configuration aircraft very different usual RC model its construction conventional should have very little difficulty duplicating airplane Con struction poses no real problem novice builder could first fan aircraft because Hi-Tech 2001 first except first prototype Hi-Tech 2000 built concur rently Build yourself go dog fight flying buddies airplane looks 10 15 years ahead its time Fuselage Make yourself kit parts Begin cutting out fuselage form ers including 08 sheet aluminum engine/wing bearers Also cut out Y8 ply fuselage sides Cut spruce top bottom keels length top half fuselage built flat workbench nacelle split line upward nose formers will have blocked-up appropriate 36 Model Aviation Fuselage ocuva varnu.y uut cuEE 75 LflU 1/16 1/4 sheet balsa Above Fuselage framed fuwu lage/nacelle split line upward top bottom keels added Above Forward nacelle has cut away after finishing ward Internal duct sheeting aft internal duct sheeting prog ress Note temporary brace across aft end Right Forward nacelle Inlet section has glued fuselage Aluminum wing/ engine bearers have positioned glued Forward upper fuselage Internal walls also Installed stage Left Canard framed Is-In wire pivot block installed Note lower rib alignment tabs still point High Canard fully sheeted 1/32 hard balsa Being front canard surfaces subject substantial abuse Tip blocks added sanded Left Rectangular holes box beams have cut wing being trial-fitted fuselage Right Satisfied fit box beams secured wing landing gear blocks fitted glued place lower wing sheeting can installed amount maintain alignment remaining formers stood upright directly building board sure glue F3a F3 F5a F5 must separate later form radio hatch may time crack F4 top pW sideWall facilitate radio hatch removal after fuselage has planked install 08 alu nilnum formers yet Plank entire upper fuselage %2-in strips 3/-in width Build lower nacelle upside down much same manner up per fuselage After outside lower nacelle has planked internal duct lines can formed out A6 sheet fan unit temporarily place suggest lay internal sheet balsa left right halves possibly thirds depending upon softness balsa Install roughly shape balsa block fuselage inlet dish form upper inlet exhaust walls same manner lower nacelle point cut lower nacelle three pieces shown plans Dress mating edges extra sheet balsa and/or filler material Glue th ward aft parts lower nacelle upper fuselage Sand air inlet lip approximately A-in radius Install /16 ply cross braces rear add strength rear fuselage Cut notch upper spruce keel accept two aluminum formers will also need cut ply fuselage sides fit formers sure spac ing two formers complies inside dimension between two external flanges fan unit formers take wing load help secure fan unit sure properly aligned fastened fuselage glued first mix ture baking soda Hot Stuff backed up some RTV silicone sealer Glue nose block sand entire fuselage smooth cut off radio hatch Dress edges add /16 ply alignment tabs refit fuselage ke-sand fuselage time add balsa filler Install A-in x 2-in-wide fin mounting rails against side fuselage Cut two rib fillers A-in sheet balsa identical WI glue fuselage sides make sure proper incidence left right achieved October1984 37 Left Wing completely framed ready upper 1/16 sheet Ing Above Plywood box beams constructed fitted alumi num wing mounts Note 1/4 sheet balsa Wi glued fuselage side acts incidence jig Design well thought out S2 SPRUCE LMEP BLOCK NOSE ROSS SPEET OELERRNCR BALSA KILLERS SEE SlEET 2 /AINE IS INNPAF ARL S,EETr UTAO OP UEMT PANEMOUNTING PAILS ON 20 LIRE PLR SIUKSI ELSELASE FILET 0L FUSERSE FOROLOSASPtEBOET*LSCAEW 0A SIC K PT UNLESSPRADWORO NACELLE OThERISE SPECIFIEDASOKOIKS BLOCK TAO ArEA SE352 PLANK IOROFO 0010 SEOR LESB TP 0EElFl FRENTEN 00CCINCBEBPOAARRSPLIT RAIL REElF 00 330PLANKING ERS KEO IOWAAnAL FROM ROAD BALSATOP 01KW EBB' OEA F ER$FOT 2EARESA-oKIlO SCAMP '0 SOEET7 ANTE ANAL WALL ENSUPPBBT /-2~ -- F IROABASO COSARO INSIDE SLAEMCE UC ROOSSO NOSE 010DB OSCO ISLPT OAEO AlSOTB -AR--/06 ALUM ASALE LEAP DOER POINT TN NOR-ANJ EPOAIED AIEI2B BALSA ALOES BRI4 SPAACE SBIEEEOERI LDMERAIUEELLE SALARy 20WIPEFILLEROLONS INSIDE ABC DE NACELE SEE FM BOAC FI TbFOR BEOAA332 OLASRINNAC SPEEOIND-CUT NOCELLE TO SPIT PACK EBBOCO-EBB 050 SUE AFO CUT CACELE BETACENSSPEll LONESEOBIAN TA FUSELUSE ERS ANO SLOE EMO 21010NOSE SLAP ALOE OPTISKO2SECTIROI 00 ELSEIHrTECH 200/ -AROB CBROAIKB S/3D PLANPIBRIROTE LEFT SOAK DAIBTED EBB ELAPORAU 20 010 MAIN SEAM APP ENOOES OUTLIKE OF IIMEND OF LOAKOLBBEV8PA 2ThMAO PER FUSERAK SOAKSSPRUEK PEEL AAn8r /OAKAAP El000ALL/BAj. M S-BB-0A easiest way put centerline rib balsa measure up nacelle split line proper amount leading trailing edges rib incidence gauge assembling wing fuselage Put assembly aside now work fly ing surfaces Wing Cut Out formers being sure include wing twist alignment tabs leading trailing edges cut out wing spar box holes inboard ribs yet just mark location rib Cut upper lower spruce spars balsa leading edges length Lay lower spar plans Pin down root Place pin rib position over plans pulling lower spar up place rib Glue assembly Install upper spar leading edges being sure glue joint wing remains flat table Also glue 1/1 x A-in aileron hinge line balsa place Sand sub spar follow shape rib wing still pinned down board around outside sheet entire upper surface /l6 sheet hard balsa Cut length shape landing gear blocks Route center block A-in piano wire Drill through block assembly near outboard end same A-in wire Secure assembly rib lower spar large doses epoxy Sand blocks match lower wing ribs Using epoxy adhesive construct wing box spars ply sides 1/16 ply top Left forward wing fuselage intersection built-up scrap balsa filler materIal dish shape lower fuselage just ahead inlet lip effectively increase capture area inlet Right upper fuselage has cut away radio hatch Similar underside upper joint wing fuselage blended scrap balsa pieces filler 38 Model Aviation B B B C Full-Size Plans Available. See Page 180 DILCR% TRAVEL yCVT UN I2 TE 510CR UIDA AD SPAR TAR IDA V IDAAILERAR SAR SPRUCE UPPERTARDA FTCAAPWVAAHE1 TRUE VICA Ffl RALSA CANARDCI III PIVOT BLACA III V RALSA CDUPPER AND CANER SPAR NATE- Ri VERTICAL AND CANARDFThDADVRAM AIRS DA PEA BALSA DA P SIDESI IDIR PLO TOP APE -PlO REPj PLT P015 FRONT SPAR ADA r~ ru-SHORN TRUE VIED TAOTE NASRART E II REPTAPICRL INBOARD AIRS SECTION APT SPDA ADA. TYPICAL VERTICAL OVIL RECTIANRPA BALSA TIP SARCED TA VIRPAILIA VA BRASS VANE CARTADE OPEOR- BALSA PIN PAST~BDNABOTE RINSE - TER UPPER VILERAN SAN-SPAR DDTVTED INTS TRU VIEBVERTIEB. TAILhAS BEEN INSTALED REMOVE BOARTIRS RAILS.'L..I THIS SECTION INSTALL LAMER PETE BASADAT VALERAS SUB PDD NEAT AVANTIND RAIL REPDUN C CANTROL PABTATOP POD DADSD6 VERTICAL TAILTARVATRECTADINO SANE REP 00 3 bottom aluminum formers tached fuselage used jig coat aluminum lightly Vaseline avoid gluing box spars spars slid onto fuselage formers open up wing rib until good fit obtained Slide wing onto fuselage Use Y4-in-thick wing rib glued fuselage incidence gauge wing has built correctly point ribs box spar passes through have properly marked cut wing anhedral will properly built Check equal left right secure box spars onto wing ribs epoxy Sand plywood balsa pro trudes below bottom rib Install lower aileron sub-spar sand contour Cut off remaining lower wing twist alignment tabs sheet lower wing careful add remove built-in twist Cut balsa block wing tips shape glue wing weap ons destruction version wing tips necessary good flight performance two-tone gray camou flage paint scheme gives inipres sion aircraft actually ventory US Air Force Once entire wing has sanded smooth leading trailing edges have shaped cut aileron wing Cut 1A-in-wide slot along aileron hinge line inboard aileron %2-in wire aileron torque rod Bend left right torque rod secure place Sand 15 angle top aile ron leading edge Cut slot top sur October 1984 39 Left Nyrods snake through left right aide wing/fuselage intersection both aileron thrust-vectoring vane control Above Framing vertical tail Note centerline refennoc marked backof leading edge same trailing edge Left what completed wing/fuselage fillet should look like after full shaping sanding preparatory covering finishing Right Vertical tall mounting rails 1/16 ply fuselage braces have installed thrust-vectoring vane will hinged rails Left Cutawaythe mounting ralisto accept 06-in aluminum nacelle mounting brackets Right Dual pushrods oneto canard surface operated side elevator servo single pushrod also runs aft thrust-vectoring vane elevator servo Aileron attachment standard providing second pushrcti nose gear receiver forward servos rectangular 500 mAh battery placed forward receiver Theres much room spare its adequate purpose face aileron accept aileron torque rod install time canard surface built much same manner wing over look 30 twist canard necessary good flight performance few things different wing construction 1 /-in pivot wire hard balsa mounting block installed sanded shape before sheeting done 2 Sheeting A2 harda pen thecenterline down leading edge balsa instead A6and fin post pin plans Use reference line up rib Use favorite super glue cyanoacrylate suspend ribs off board tween leading edge rudder post Sheet side A2 hard balsa glue rudder tip block sand shape vertical tails sparless because large solid balsa trailing edgewhich could cut off rudders re desired have found much use canard designs Construction begins cutting out rib Next cut length slightly wider leading edge rudder post Scribe mark Assembly Secure canard pivot blocks Continued page 137 7 40 Model Aviation Left This AMAs oo MHz radio syatems loan George Myers Bob Aberle testing Flown Hi-Tech 2001 radio frequency may portend future RC mod eling Above Coming home after its first flight Hi-Tech 2001 slightly nose-high surprisingly slow easy control joined panel upside down None other John Hunton sent definitive ar ticle fully illustrated foam wing stiff ness strange things can happen John wing skinned stiff Ken Willard R CMs peerless Sunday pilot intrigued sending series tough questions Maybe hell solve riddle though doubt anyone ever will have suspicion up-aileron spoiling thats long long shot letters about LeCrate gentleman Panorama City CA says have using name- issues July issue too much did sez large letters CRATE initials LE wrong cant have everything once com mented name Crate call him Red Must fun flying name Red Crate Anyhooo Red out modeling 40 years too bad didnt know about Purple Plan next time please least make Mr Crate suggests Red got RC fixed- rotarywinged models about four years ago says thinks doomed perpetual novice So say us Bill Winter 4432 Altura Ct note change 4426 please Fafrfax VA 22030 HI-Tech 200lIHunt Continued page 40 fuselage epoxy Drill through fuselage block A2 drill 50 angle horizontal Insert Y-in ID brass tube drilled hole canard pivot bearing Glue place hardwood nose gear block epoxy Drill A2-in hole -in ID brass tube nose gear pivot bearing using offset nose gear may wish drill bearing hole slightly off set bring center wheels onto centerline aircraft point decide whether wish permanently mount wing have removable have Pinto wagon plenty space one-piece model size opted glue wing fuselage arrangement allowed bury control rods ailerons thrust vectoring vane wing fillet pushrods enter fuselage radio compartment just about wing root leading edge used red Nyrods because ability conform tight corners After pushrod sleeves temporarily glued place smear favorite fillet compound juncture wing fuselage throttle pushrod may have pass through forward aluminum fuselage former must drill hole through former make small drill through middlenot through edge Remember former takes quite bit wing load Aluminum can fail just easily plywood put stress concentrator poorly drilled hole sharp corner high-stress area get throttle pushrod engine compartment radio com partment first plunged A6 wire rod sharpened point through obstructing walls followed down wire front end red Nyrod slightly sharpened sander point invert model add balsa fillers forward fair ver tical tail mounting rails rails also help align lower nacelle Cut bend two L-shaped aluminum 900 angles 06 sheet Secure two angle pieces side lower nacelle about midway between two aluminum fuselage formers Drill % hole through horizontal leg bracket mounting screws Relieve vertical tail mounting rails lower side wing accept aluminum brackets Remove wing skin directly underneath brackets instal small hardwood block accept mounting screws Build-up long leading edge fairing between canard wing using bits balsa may omitted adept forming inside conical curves feel deletion will affect flight qualities satisfied exterior shape craft may begin cover ing and/or painting Cover install ailerons using upper leading edge hinge line like use MonoKote hinges because strength adequate because form aerodynamic seal between upper lower surface improves aileron control may use other hinges long seal gap Sand l0 angle bottom vertical tails Cover tails glue top mounting rails assuming mounting rails have covered covering directly under tails has removed thrust vectoring vane con structed proper length piece 1 A-in trailing edge stock roughly shaped form symmetrical airfoil pivot simply two large T-pins stuck through vertical tail mounting rails heads cut off pair snips pivot posi tioned like all-flying surfaces should 25% back Mean Aerodynamic Chord MAC case constant chord just 25% back leading edge done alleviate some aerodynamic load imposed servo bellcrank simply right angle piece aluminum super-glued vane Canard nose gear bellcranks fabricated 04 sheet brass cut sanded shape soldered -in wheel collar flat ground shaft setscrew have posi tive lock properly locate bellcrank onto shaft Continued page 140 October1984 137 Funster. versatile performing aircraft broadest range capabilities ever seen RC Modeler Magazine st 1982 HLAIUb MODDY LODDY RCM FUNSTER 40$6450 List price $7695 72 wing span 840 sq wing area 575 pounds approximate weight 1575 oz per sq ft wing loading fuselage length 55 4 preferably 5 6 channels 40 engine Hobby Lobbys RCM FUNSTER conventional balsa plywood model airplane kit based upon Dick Tichenors plans construction article August 1982 issue RC Modeler Magazine Kraft RIC Electronics PERSONAL SERVICE BY MILT ERB SPECIAL LOW PRICESService charge repair and/or checkup system four servos $2975 maximum Extra servos$250 Parts return shipment extra FREQUENCY CONVERSIONS$2500 per system 50% off repair checkup SPECIAL IZINGin competition systems frequency conversions FM equipment CUSTOM REPAIRSAll systems given personal attention test report comments careful cost control effort made return system likenew better operating condition HEATHKIT CUSTOMERSNew frequency conversions now available plugin systems$3500 per system AUTHORIZED FACTORY SERWCE FOR 1685 Beckwith Dr Hudson OH 44236216 655-2278 Hi-Tech 2001 IHunt Continued page 137 aileron belicrank simply piece %2-in ID brass tubing flattened end round end slipped over short vertical stub end aileron torque rod soldered few X6-in holes drilled through flattened end brass tubing holes ac cept aileron pushrods intro ducing unwanted aileron differential such obtained standard nylon torque rod belicrank Bend landing gear legs A-in piano wire secure glue wish have gear removable secure screw-on straps will also use OS Max 25 VF DF have suggestion connecting pushrod throt tle Cut 175-in length A6-in ID brass tubing Push over hex nut right side carb squeeze pair flats tubing will index tubing keep slipping around hex nut Drill %-in-dia hole through fan shell line rotating drum carb Trim brass tube just short enough solder brass bellcrank length must determined low throttle position drum translates out slightly rotated Drill 1A-in-dia hole down tube through bellcrank gives access low throttle adjustment screw Drill few X6-in holes through bellcrank ac cept nylon clevis whatever other form attachment choose use Remem ber whatever method use actuate throttle whole lot room between fan shell inside wall watch binding last subject needs ad dressed start engine once fan has installed aircraft An extension shaft added conventional Sullivan Hi-Torque starter will get engine started least amount trouble 9- 10-in shaft can cut down Byron Originals extension shaft used start Byron pusher-type fan-jets up tail cone can fabricated scratch have lathe choose cut down Byron extension shaft cut 9- 10-in length starting cone end Retap cut-off end lA20 thread approxi mately %-in deep method starting engine pro duces slight off-center engagement about 70 10 C have found long firm engagement starting cone spinner maintained starter will turn engine freely slipping off conclusion would like thank George Myers Radio Technique contrib uting editor Model Aviation Bob Kress Kress Technology Bob Aberle Flying Models Wally Maclister MACS Products expert assis tance instrumental making project success Radio TechnlquelMyers Continued page 43 helicopter flight simulators plus model airplane design software popping up everywhere didnt know about wont long before will have have kit order considered types Permit small plug Kaypro have son Geoffrey has another work well wouldnt Looking what get price consider ing past performances recommen dations modelers considering such purchase 1 completely dark buy Commodore 64 about $200 very selective about what add because accessories expensive 2 looking maximum computing power minimum cost buy Kaypro 2 includes software youll need $1295 Kaypro 2X cludes printer cable well $1895 New Model Magic Products 25% fighter Mode Magic Epoxy Plus 2 Part 8 Mm Use anywhere two pat epoxy used Light weight Sandabie Carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves like basswood! 8 fi $895 See dealer &at write cat Nik Model Magic Plociicts k-ic -P0 Son 19754 51Paj MsI 55119 715425-1397 140 Model Aviation / IA 5321 E R@sedile Ft Womil TX 75112 CORRECTION fullpage advertisement page 23 September issue Model AvIatIon should have described J C Cap 21 Ready-Built1/64Plywood Covered Wing Also 40 size JC Trainers special price $5995 $995 Model Aviation regrets error GIANT RIC SCALE PLANS SOP55ITU 1*56010 aSnttO Se124 SOp pus * SOtwtTe TASLOIO2 I64 Op.StIOS ppUSA *06015*52C ItOP Se.52eUOppUSA P06015 neta t63 rAp$OSeeppUSA PJU CORSAIr2 PSr SP,SPSppUSA CUPTISS P402fl CC SeSSCOOppUSA PIP SIARCAr2 IlASpSOC WppUSA Fibetglass ColOlings & Canopies UcUitUhie Send StUmp cetaited Urochures Giant Scale Accessories Ocr PlUtro sect PostPaid within USA Nick Ziroli 29 tdgor Drie. SnithSown NY 15787 USA
Edition: Model Aviation - 1984/10
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 137, 140
NO OCR TEXT NO OCR TEXT power touch-down accomplished very trainer-like pace Hi-Tech 2000 2001 both definitely easy land control vane Hi-Tech 2001s fan duct produced instantaneous responses commands very slow flying speeds during some aborted landings reaffirm ing decision use vane assist canard instead depending ele vons Hi-Tech 2000 Inverted flight very stable spite fact wing canard have lot twist upright design necessity slow flight After vane control throw reduced aircraft became less sensitive Subse quent flights showed Hi-Tech 2001 pleasant predictable airplane fly believe because Hi-Tech 2001s excellent low-speed flight qualities predictable aerobatic perform ance anyone can handle advanced aileron trainer can also fly aircraft just have prepared dif ferent takeoff characteristics ducted fan model Ducted-fan models accelerate much slower prop-driven coun terparts similar weight extends runway length required get craft airborne Also ducted-fan models have advantage prop blast elevator rudder make effec tive slow flying speeds also creases takeoff landing distances conventional ducted-fan models must wait longer before control sur faces become effective addition control vane wake fan ex haust Hi-Tech 2001 alleviates lat ter problem However lightly-built aircraft will get air hurry provide snappy performance Hi-Tech 2001 fills bill Canard philosophy aircraft cient Wright brothers flew have widely accepted ever due efforts Burt Rutan few other home-builders canard air craft now becoming popular better understood Subsonic canard air craft can provide improved fuel effici ency aircraft safety better stall charac teristics allow usable space Len VIOW fuselage belly fan unit removed throttle belicrank hangs inside shell Right fan unit uses up space just should lower nacelle seen beyond resting temporarily wing photographs author Len lip tan unit position suer tne Till 8510 vein juece neve buu 818rted through upper fuselage throttle belicrank has inserted through fan shell engaged engine carburetor Right Note aileron pushrods Nyrods concealed wing/fuselage fillet enter fuselage about intersection wing leading edge fuselage 32 Model Aviation angie tnat see getwuen ins merier luemuw isle uuusauj problem long firm engagementof spinner maintainee fuselage cargo passengers found conventional designs Canards transonic supersonic aircraft im prove fuel efficiency important iy can give aircraft manue vering flexibility Control surfaces conventional wing-first aircraft produce rotations ie elevators rotate nose up down ailerons rotate roll left right rudders rotate yaw left right Canard surfaces other hand moved conjunction other con trol surfaces can produce translations stronger rotations bit much Let explain Canards coupled moved together another device produce rotation trailing edge wing elevons can produce very adequate pitch control Canards decoupled canard leading edge up elevons trailing edge down pro duces net increase lift moving air craft perpendicular path flight vertical translation Canards coupled rudders can provide stronger turning rotations canards decoupled rudders air craft can move sideways changing heading Describing canards per form last two functions little beyond scope article Please believe work Although decoupled control modes work low Reynolds Number world have found very useful sport flying responsive enough get out trouble faster can get Hi-Tech story Hi-Tech 200x series aircraft designed aid computer structurally aerodynam ically series sweptwing canard-type aircraft have ex perimenting over last few years intention produce aircraft looks different uses unusual flight controls includes much modern technology materials power plants electronics possible setLeft Note air inlet inlet dish also scalelike Robart iandlng gear covers Right Looking down iniet see fan blades very accessible have starter extension shaft spinner cone Ductedfan power very workable system Left Wing tip sidewinder missile installed two countersunk No 4flat-head slotted wood screws iie screws noia weii irns cation Right Detail dual nose gear made Robart scale landing gear covers Note one-loop spring nose gear wire October 1984 33 1 . .,ome aluminum auuuI Huund lighter authors,shown ocover has fiberglass fuselage lighter weight isa big au n improveu erformance 2001 ting Hi-Tech development 1979 fresh out college took first engineering job Grumman Aerospace Corp Employed wind tun nel test engineer introduced some complexities making Mach 2 aircraft fly low speed Grummans designs intrigued much decided build flying model configuration large doubledelta/canard aircraft lot things against flying model too much wing leading edge sweep small wing aspect ratio chord/span closecoupled pitch control flew albeit rather poorly first however application some aerodynamic electronic tricks flight properties im proved model eventually became victim pilot disorientation over cast day About year half later working Lockheed Missiles Space Co presented myself slopes California similar aircraft Sailplane form design re duced wing sweep angle increased wing canard area left off jet engine nacelles introduction elevons assist canard pitch con trol aircraft flew superbly medium heavy winds fast turned very tightly refused spin addition could maintain very high angles attack dropping wing losing pitch control Realizing configuration showed possibilities being good powered model set myself task designing started Hi-Tech 200x series Hi-Tech 2000 closely resembles fea tured aircraft though designed around expendable foam-fuselage-core construction care shaped covered two layers glass cloth epoxy resin After exterior filled sanded smooth foam removed lacquer thinner Because inex perienced producing light strong glass fuselage final weight air craft 5 lb proved bit heavy fan designed about problem later past winter really kept ground ed started design construction second balsa-planked aircraft Hi-Tech 2001 described before first ever flown Hi-Tech sized fit RK-20 ducted-fan unit new 05 Max 25 Left lower nacelle attached via aluminum mounting tabs Right Sullivan Products Hi-Torque starter 91/z-ln extension 34 Model Aviation author isnt newcomer RC canards photos submitted omitted space reasons 11-lb pylon-mounted 60 engine tractor double-delta canard 1979 flew says sure lot work Refinements design led Hi-Tech 2001 shown above other photographs ie thrust-vectoring vane seen above left below right covered Monoote positioned between two vertical tall mounting rails vane hinged two iarge T-pins 25% chord go through rails vane I/B SHT RTBS 1/4 SHEET UPPER AND LOWER AILERON SUB SPAR MED BALSA TIPS 1/32 SHT ENTIRE VERT TAIL I/A SHT LE I/S SHT FIN POST r 1/16 SHT ENTIRE WINO CONTROL HORN FROM 06 ALUM SHT RUDDERS OPTIONAL 1/16 PLY CROSS BRACE STIFFENERS I/B BRASS TUBE SLEEVET-PIN FOR VANE PIVOT SANDED TO AIRFOIL SHAPE FOR VANE /2 X 5/8 VERT I/B 00 FLATTENEDTAIL MOUNTING RAIL BRASS TUBE /32 SHT BLOCKSI/B SHT RIBS ENTIRE CANARD I/B X 1/4 SPRUCEvs UPPER AND LOWER KEELS\5 BALSA BLOCK--/ 1/2 SHT LEMED BALSA I/B LO WIREAFT SPAR BOX BEAMTIPS ICONSTRUCT FROM I/B PLY SIDES L BALSA AND FILLERAND 1/16 PLY TOP AND BOTTOM WINO/FUSE BLENDINGFRONT SPAR BOX BEAM SIMILAR OPTIONAL FUSE FORMERS2 1/4 DIAI/B X 1/4 SPRUCE UPPER ITYPI 3/32 SHT 3/B X 3/4 HAROWDO MAIN GEAR AND LOWER SPARS PLANK WHEELS ENTIRERADIO HATCHLO BLOCK FUSELAGE SIDE REF MED BALSA TIP CANARD RIBS PIVOT1/16 SHT BALSA SOLID BALSA NOSE 2 DIA NOSE GEAR OUA OP IDNA HI-TECH 2001 RK-20 OUCTED FAN AIRCRAFT SPAN 3878 LENGTH 4969 WINO AREA 425 50 IN WEIGHT 45 LBS POWERPLANT OS MAX 25 VF OF W/ MACS PRODUCTS WIZARD PIPE CONTROL FUNCTIONS CANARD/VANE THROTTLE AILERON W/COUPLEO NOSE GEA DRAWN BY TOM HUNT 0 C 4 0 0 CD ~1 0 Left Bottom nacelle laid out upside down building board Note mat mne Torwar-cantec Tormer mistaeniy sianmea Torwara Instead aftand wasnt corrected until after nacelle planked Right Nacelle planked pinned building board VF DF engine chosen power because time new engine designed specifically ducted fans MACS Products tuned pipe also sanded extra power will notice dihedral canards anhedral wing outwardlycanted vertical tails canard dihedral attempt keep flow air behind canard upsetting board section wing anhedral wing used reduce some roll stability achieved high leading edge sweep angle outward cant vertical tails purely aesthetic model although does help yaw control reduce drag transonic alrcraft Hi-Tech 2000 utilized elevons help canard pitch control Hi-Tech 2001 utilizes movable vane wake fan exhaust assist canard instead elevons purpose enable pitch control well below airspeed canard wing elevons no long er effective radio chose control prototype new Airtronics Championship Series seven channels radio familiar has programmable features servo reversing expo/linear rudder/aileron coupling end point adjustment dual rates plug V-tail mixing board also opportunity install fly aircraft AMAs experi mental 926 MHz radios loan George Myers Bob Aberle evaluation Construction Although configuration aircraft very different usual RC model its construction conventional should have very little difficulty duplicating airplane Con struction poses no real problem novice builder could first fan aircraft because Hi-Tech 2001 first except first prototype Hi-Tech 2000 built concur rently Build yourself go dog fight flying buddies airplane looks 10 15 years ahead its time Fuselage Make yourself kit parts Begin cutting out fuselage form ers including 08 sheet aluminum engine/wing bearers Also cut out Y8 ply fuselage sides Cut spruce top bottom keels length top half fuselage built flat workbench nacelle split line upward nose formers will have blocked-up appropriate 36 Model Aviation Fuselage ocuva varnu.y uut cuEE 75 LflU 1/16 1/4 sheet balsa Above Fuselage framed fuwu lage/nacelle split line upward top bottom keels added Above Forward nacelle has cut away after finishing ward Internal duct sheeting aft internal duct sheeting prog ress Note temporary brace across aft end Right Forward nacelle Inlet section has glued fuselage Aluminum wing/ engine bearers have positioned glued Forward upper fuselage Internal walls also Installed stage Left Canard framed Is-In wire pivot block installed Note lower rib alignment tabs still point High Canard fully sheeted 1/32 hard balsa Being front canard surfaces subject substantial abuse Tip blocks added sanded Left Rectangular holes box beams have cut wing being trial-fitted fuselage Right Satisfied fit box beams secured wing landing gear blocks fitted glued place lower wing sheeting can installed amount maintain alignment remaining formers stood upright directly building board sure glue F3a F3 F5a F5 must separate later form radio hatch may time crack F4 top pW sideWall facilitate radio hatch removal after fuselage has planked install 08 alu nilnum formers yet Plank entire upper fuselage %2-in strips 3/-in width Build lower nacelle upside down much same manner up per fuselage After outside lower nacelle has planked internal duct lines can formed out A6 sheet fan unit temporarily place suggest lay internal sheet balsa left right halves possibly thirds depending upon softness balsa Install roughly shape balsa block fuselage inlet dish form upper inlet exhaust walls same manner lower nacelle point cut lower nacelle three pieces shown plans Dress mating edges extra sheet balsa and/or filler material Glue th ward aft parts lower nacelle upper fuselage Sand air inlet lip approximately A-in radius Install /16 ply cross braces rear add strength rear fuselage Cut notch upper spruce keel accept two aluminum formers will also need cut ply fuselage sides fit formers sure spac ing two formers complies inside dimension between two external flanges fan unit formers take wing load help secure fan unit sure properly aligned fastened fuselage glued first mix ture baking soda Hot Stuff backed up some RTV silicone sealer Glue nose block sand entire fuselage smooth cut off radio hatch Dress edges add /16 ply alignment tabs refit fuselage ke-sand fuselage time add balsa filler Install A-in x 2-in-wide fin mounting rails against side fuselage Cut two rib fillers A-in sheet balsa identical WI glue fuselage sides make sure proper incidence left right achieved October1984 37 Left Wing completely framed ready upper 1/16 sheet Ing Above Plywood box beams constructed fitted alumi num wing mounts Note 1/4 sheet balsa Wi glued fuselage side acts incidence jig Design well thought out S2 SPRUCE LMEP BLOCK NOSE ROSS SPEET OELERRNCR BALSA KILLERS SEE SlEET 2 /AINE IS INNPAF ARL S,EETr UTAO OP UEMT PANEMOUNTING PAILS ON 20 LIRE PLR SIUKSI ELSELASE FILET 0L FUSERSE FOROLOSASPtEBOET*LSCAEW 0A SIC K PT UNLESSPRADWORO NACELLE OThERISE SPECIFIEDASOKOIKS BLOCK TAO ArEA SE352 PLANK IOROFO 0010 SEOR LESB TP 0EElFl FRENTEN 00CCINCBEBPOAARRSPLIT RAIL REElF 00 330PLANKING ERS KEO IOWAAnAL FROM ROAD BALSATOP 01KW EBB' OEA F ER$FOT 2EARESA-oKIlO SCAMP '0 SOEET7 ANTE ANAL WALL ENSUPPBBT /-2~ -- F IROABASO COSARO INSIDE SLAEMCE UC ROOSSO NOSE 010DB OSCO ISLPT OAEO AlSOTB -AR--/06 ALUM ASALE LEAP DOER POINT TN NOR-ANJ EPOAIED AIEI2B BALSA ALOES BRI4 SPAACE SBIEEEOERI LDMERAIUEELLE SALARy 20WIPEFILLEROLONS INSIDE ABC DE NACELE SEE FM BOAC FI TbFOR BEOAA332 OLASRINNAC SPEEOIND-CUT NOCELLE TO SPIT PACK EBBOCO-EBB 050 SUE AFO CUT CACELE BETACENSSPEll LONESEOBIAN TA FUSELUSE ERS ANO SLOE EMO 21010NOSE SLAP ALOE OPTISKO2SECTIROI 00 ELSEIHrTECH 200/ -AROB CBROAIKB S/3D PLANPIBRIROTE LEFT SOAK DAIBTED EBB ELAPORAU 20 010 MAIN SEAM APP ENOOES OUTLIKE OF IIMEND OF LOAKOLBBEV8PA 2ThMAO PER FUSERAK SOAKSSPRUEK PEEL AAn8r /OAKAAP El000ALL/BAj. M S-BB-0A easiest way put centerline rib balsa measure up nacelle split line proper amount leading trailing edges rib incidence gauge assembling wing fuselage Put assembly aside now work fly ing surfaces Wing Cut Out formers being sure include wing twist alignment tabs leading trailing edges cut out wing spar box holes inboard ribs yet just mark location rib Cut upper lower spruce spars balsa leading edges length Lay lower spar plans Pin down root Place pin rib position over plans pulling lower spar up place rib Glue assembly Install upper spar leading edges being sure glue joint wing remains flat table Also glue 1/1 x A-in aileron hinge line balsa place Sand sub spar follow shape rib wing still pinned down board around outside sheet entire upper surface /l6 sheet hard balsa Cut length shape landing gear blocks Route center block A-in piano wire Drill through block assembly near outboard end same A-in wire Secure assembly rib lower spar large doses epoxy Sand blocks match lower wing ribs Using epoxy adhesive construct wing box spars ply sides 1/16 ply top Left forward wing fuselage intersection built-up scrap balsa filler materIal dish shape lower fuselage just ahead inlet lip effectively increase capture area inlet Right upper fuselage has cut away radio hatch Similar underside upper joint wing fuselage blended scrap balsa pieces filler 38 Model Aviation B B B C Full-Size Plans Available. See Page 180 DILCR% TRAVEL yCVT UN I2 TE 510CR UIDA AD SPAR TAR IDA V IDAAILERAR SAR SPRUCE UPPERTARDA FTCAAPWVAAHE1 TRUE VICA Ffl RALSA CANARDCI III PIVOT BLACA III V RALSA CDUPPER AND CANER SPAR NATE- Ri VERTICAL AND CANARDFThDADVRAM AIRS DA PEA BALSA DA P SIDESI IDIR PLO TOP APE -PlO REPj PLT P015 FRONT SPAR ADA r~ ru-SHORN TRUE VIED TAOTE NASRART E II REPTAPICRL INBOARD AIRS SECTION APT SPDA ADA. TYPICAL VERTICAL OVIL RECTIANRPA BALSA TIP SARCED TA VIRPAILIA VA BRASS VANE CARTADE OPEOR- BALSA PIN PAST~BDNABOTE RINSE - TER UPPER VILERAN SAN-SPAR DDTVTED INTS TRU VIEBVERTIEB. TAILhAS BEEN INSTALED REMOVE BOARTIRS RAILS.'L..I THIS SECTION INSTALL LAMER PETE BASADAT VALERAS SUB PDD NEAT AVANTIND RAIL REPDUN C CANTROL PABTATOP POD DADSD6 VERTICAL TAILTARVATRECTADINO SANE REP 00 3 bottom aluminum formers tached fuselage used jig coat aluminum lightly Vaseline avoid gluing box spars spars slid onto fuselage formers open up wing rib until good fit obtained Slide wing onto fuselage Use Y4-in-thick wing rib glued fuselage incidence gauge wing has built correctly point ribs box spar passes through have properly marked cut wing anhedral will properly built Check equal left right secure box spars onto wing ribs epoxy Sand plywood balsa pro trudes below bottom rib Install lower aileron sub-spar sand contour Cut off remaining lower wing twist alignment tabs sheet lower wing careful add remove built-in twist Cut balsa block wing tips shape glue wing weap ons destruction version wing tips necessary good flight performance two-tone gray camou flage paint scheme gives inipres sion aircraft actually ventory US Air Force Once entire wing has sanded smooth leading trailing edges have shaped cut aileron wing Cut 1A-in-wide slot along aileron hinge line inboard aileron %2-in wire aileron torque rod Bend left right torque rod secure place Sand 15 angle top aile ron leading edge Cut slot top sur October 1984 39 Left Nyrods snake through left right aide wing/fuselage intersection both aileron thrust-vectoring vane control Above Framing vertical tail Note centerline refennoc marked backof leading edge same trailing edge Left what completed wing/fuselage fillet should look like after full shaping sanding preparatory covering finishing Right Vertical tall mounting rails 1/16 ply fuselage braces have installed thrust-vectoring vane will hinged rails Left Cutawaythe mounting ralisto accept 06-in aluminum nacelle mounting brackets Right Dual pushrods oneto canard surface operated side elevator servo single pushrod also runs aft thrust-vectoring vane elevator servo Aileron attachment standard providing second pushrcti nose gear receiver forward servos rectangular 500 mAh battery placed forward receiver Theres much room spare its adequate purpose face aileron accept aileron torque rod install time canard surface built much same manner wing over look 30 twist canard necessary good flight performance few things different wing construction 1 /-in pivot wire hard balsa mounting block installed sanded shape before sheeting done 2 Sheeting A2 harda pen thecenterline down leading edge balsa instead A6and fin post pin plans Use reference line up rib Use favorite super glue cyanoacrylate suspend ribs off board tween leading edge rudder post Sheet side A2 hard balsa glue rudder tip block sand shape vertical tails sparless because large solid balsa trailing edgewhich could cut off rudders re desired have found much use canard designs Construction begins cutting out rib Next cut length slightly wider leading edge rudder post Scribe mark Assembly Secure canard pivot blocks Continued page 137 7 40 Model Aviation Left This AMAs oo MHz radio syatems loan George Myers Bob Aberle testing Flown Hi-Tech 2001 radio frequency may portend future RC mod eling Above Coming home after its first flight Hi-Tech 2001 slightly nose-high surprisingly slow easy control joined panel upside down None other John Hunton sent definitive ar ticle fully illustrated foam wing stiff ness strange things can happen John wing skinned stiff Ken Willard R CMs peerless Sunday pilot intrigued sending series tough questions Maybe hell solve riddle though doubt anyone ever will have suspicion up-aileron spoiling thats long long shot letters about LeCrate gentleman Panorama City CA says have using name- issues July issue too much did sez large letters CRATE initials LE wrong cant have everything once com mented name Crate call him Red Must fun flying name Red Crate Anyhooo Red out modeling 40 years too bad didnt know about Purple Plan next time please least make Mr Crate suggests Red got RC fixed- rotarywinged models about four years ago says thinks doomed perpetual novice So say us Bill Winter 4432 Altura Ct note change 4426 please Fafrfax VA 22030 HI-Tech 200lIHunt Continued page 40 fuselage epoxy Drill through fuselage block A2 drill 50 angle horizontal Insert Y-in ID brass tube drilled hole canard pivot bearing Glue place hardwood nose gear block epoxy Drill A2-in hole -in ID brass tube nose gear pivot bearing using offset nose gear may wish drill bearing hole slightly off set bring center wheels onto centerline aircraft point decide whether wish permanently mount wing have removable have Pinto wagon plenty space one-piece model size opted glue wing fuselage arrangement allowed bury control rods ailerons thrust vectoring vane wing fillet pushrods enter fuselage radio compartment just about wing root leading edge used red Nyrods because ability conform tight corners After pushrod sleeves temporarily glued place smear favorite fillet compound juncture wing fuselage throttle pushrod may have pass through forward aluminum fuselage former must drill hole through former make small drill through middlenot through edge Remember former takes quite bit wing load Aluminum can fail just easily plywood put stress concentrator poorly drilled hole sharp corner high-stress area get throttle pushrod engine compartment radio com partment first plunged A6 wire rod sharpened point through obstructing walls followed down wire front end red Nyrod slightly sharpened sander point invert model add balsa fillers forward fair ver tical tail mounting rails rails also help align lower nacelle Cut bend two L-shaped aluminum 900 angles 06 sheet Secure two angle pieces side lower nacelle about midway between two aluminum fuselage formers Drill % hole through horizontal leg bracket mounting screws Relieve vertical tail mounting rails lower side wing accept aluminum brackets Remove wing skin directly underneath brackets instal small hardwood block accept mounting screws Build-up long leading edge fairing between canard wing using bits balsa may omitted adept forming inside conical curves feel deletion will affect flight qualities satisfied exterior shape craft may begin cover ing and/or painting Cover install ailerons using upper leading edge hinge line like use MonoKote hinges because strength adequate because form aerodynamic seal between upper lower surface improves aileron control may use other hinges long seal gap Sand l0 angle bottom vertical tails Cover tails glue top mounting rails assuming mounting rails have covered covering directly under tails has removed thrust vectoring vane con structed proper length piece 1 A-in trailing edge stock roughly shaped form symmetrical airfoil pivot simply two large T-pins stuck through vertical tail mounting rails heads cut off pair snips pivot posi tioned like all-flying surfaces should 25% back Mean Aerodynamic Chord MAC case constant chord just 25% back leading edge done alleviate some aerodynamic load imposed servo bellcrank simply right angle piece aluminum super-glued vane Canard nose gear bellcranks fabricated 04 sheet brass cut sanded shape soldered -in wheel collar flat ground shaft setscrew have posi tive lock properly locate bellcrank onto shaft Continued page 140 October1984 137 Funster. versatile performing aircraft broadest range capabilities ever seen RC Modeler Magazine st 1982 HLAIUb MODDY LODDY RCM FUNSTER 40$6450 List price $7695 72 wing span 840 sq wing area 575 pounds approximate weight 1575 oz per sq ft wing loading fuselage length 55 4 preferably 5 6 channels 40 engine Hobby Lobbys RCM FUNSTER conventional balsa plywood model airplane kit based upon Dick Tichenors plans construction article August 1982 issue RC Modeler Magazine Kraft RIC Electronics PERSONAL SERVICE BY MILT ERB SPECIAL LOW PRICESService charge repair and/or checkup system four servos $2975 maximum Extra servos$250 Parts return shipment extra FREQUENCY CONVERSIONS$2500 per system 50% off repair checkup SPECIAL IZINGin competition systems frequency conversions FM equipment CUSTOM REPAIRSAll systems given personal attention test report comments careful cost control effort made return system likenew better operating condition HEATHKIT CUSTOMERSNew frequency conversions now available plugin systems$3500 per system AUTHORIZED FACTORY SERWCE FOR 1685 Beckwith Dr Hudson OH 44236216 655-2278 Hi-Tech 2001 IHunt Continued page 137 aileron belicrank simply piece %2-in ID brass tubing flattened end round end slipped over short vertical stub end aileron torque rod soldered few X6-in holes drilled through flattened end brass tubing holes ac cept aileron pushrods intro ducing unwanted aileron differential such obtained standard nylon torque rod belicrank Bend landing gear legs A-in piano wire secure glue wish have gear removable secure screw-on straps will also use OS Max 25 VF DF have suggestion connecting pushrod throt tle Cut 175-in length A6-in ID brass tubing Push over hex nut right side carb squeeze pair flats tubing will index tubing keep slipping around hex nut Drill %-in-dia hole through fan shell line rotating drum carb Trim brass tube just short enough solder brass bellcrank length must determined low throttle position drum translates out slightly rotated Drill 1A-in-dia hole down tube through bellcrank gives access low throttle adjustment screw Drill few X6-in holes through bellcrank ac cept nylon clevis whatever other form attachment choose use Remem ber whatever method use actuate throttle whole lot room between fan shell inside wall watch binding last subject needs ad dressed start engine once fan has installed aircraft An extension shaft added conventional Sullivan Hi-Torque starter will get engine started least amount trouble 9- 10-in shaft can cut down Byron Originals extension shaft used start Byron pusher-type fan-jets up tail cone can fabricated scratch have lathe choose cut down Byron extension shaft cut 9- 10-in length starting cone end Retap cut-off end lA20 thread approxi mately %-in deep method starting engine pro duces slight off-center engagement about 70 10 C have found long firm engagement starting cone spinner maintained starter will turn engine freely slipping off conclusion would like thank George Myers Radio Technique contrib uting editor Model Aviation Bob Kress Kress Technology Bob Aberle Flying Models Wally Maclister MACS Products expert assis tance instrumental making project success Radio TechnlquelMyers Continued page 43 helicopter flight simulators plus model airplane design software popping up everywhere didnt know about wont long before will have have kit order considered types Permit small plug Kaypro have son Geoffrey has another work well wouldnt Looking what get price consider ing past performances recommen dations modelers considering such purchase 1 completely dark buy Commodore 64 about $200 very selective about what add because accessories expensive 2 looking maximum computing power minimum cost buy Kaypro 2 includes software youll need $1295 Kaypro 2X cludes printer cable well $1895 New Model Magic Products 25% fighter Mode Magic Epoxy Plus 2 Part 8 Mm Use anywhere two pat epoxy used Light weight Sandabie Carveable Excellent Gap Filling Non Sagging Superior Strength Sands carves like basswood! 8 fi $895 See dealer &at write cat Nik Model Magic Plociicts k-ic -P0 Son 19754 51Paj MsI 55119 715425-1397 140 Model Aviation / IA 5321 E R@sedile Ft Womil TX 75112 CORRECTION fullpage advertisement page 23 September issue Model AvIatIon should have described J C Cap 21 Ready-Built1/64Plywood Covered Wing Also 40 size JC Trainers special price $5995 $995 Model Aviation regrets error GIANT RIC SCALE PLANS SOP55ITU 1*56010 aSnttO Se124 SOp pus * SOtwtTe TASLOIO2 I64 Op.StIOS ppUSA *06015*52C ItOP Se.52eUOppUSA P06015 neta t63 rAp$OSeeppUSA PJU CORSAIr2 PSr SP,SPSppUSA CUPTISS P402fl CC SeSSCOOppUSA PIP SIARCAr2 IlASpSOC WppUSA Fibetglass ColOlings & Canopies UcUitUhie Send StUmp cetaited Urochures Giant Scale Accessories Ocr PlUtro sect PostPaid within USA Nick Ziroli 29 tdgor Drie. SnithSown NY 15787 USA