NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING
Edition: Model Aviation - 1984/06
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 139, 142, 143
NO OCR TEXT NO OCR TEXT Canard designs require large vertical fin area stability twin fins Firebolt provide enough area accidentally made plain fins/rudders lost model flying details textand look companion computer article RC canard designs becoming common believe real breakthrough Zonker design Air Force aerodynamic engineers Milt Sanders Charlie Bair published March 1977 issue Model Aviation met Milt saw him fly Zonker Pattern competition 1976 Dayton Nats quite sight re cently Flying Models two canard de signs Dan Reiss May 1982 December 1983 issues RC Modeler ran interesting canard September 1983 issue just last month Model Aviation pub lished simple 1/2A RC canard think well see RC canards future will trainer versions super-stable sport types all-out Pattern designs Canards have some benefits RC use compared conventional design horizontal stabilizer does work cre ating lift just wing does wing stab work together greater efficiency Aerodynamicists say lack highspeed propeller wash over aircraft de creases drag know flying Firebolt 7 lb weight handles like much lighter model appears faster equally-powered conventional model course theres no exhaust oil wipe off full-scale aviation modelers know Burt Rutans success can ards Vari-Eze series lot look-alikes Rutans designs now flying imitation flattery Two new twin tur boprop seven-passenger business aircraft have recently introduced Beechcraft Gates Learjet aircraft big league millions dollars being risked note new Beech Starship Gates Piaggio GP-180 both canard designs pusher engine installations built first canard model Control Line type back 1950s another CL canard design published July 1977 Flying Models still feel CL canard has lot offer Precision Aerobatics com petition Another canard project 10-foot RC Sailplane June 1975 FM canard model background wanted try again P5W version Firebolt design owes lot Sanders-Bair Zonker knew well-proven aircraft laid out wing 57-in span 580 sq tapered Left Hear view presents unusual appearance Wing has tully-symmetrical airtoil strip ailerons 584 sq area Forward canard sur face has area 138 sq Right Canards arent new author twin-boom CL Stunt model left published Flying Models magazine Hes also canard RC Sailplane further development Dick feels canard design would ideal CL Precision Aerobatics EHUK WOOD ktHank Clark 1/8 BALSA FORMERS 234 3i8 BALSA BLOCKS3/B TRIANGLE STOCK TOP FUSELAGE ONLY FORMED CANOPY OVER I/B FORMS 3/16 SHEET TOP2 FULL LENGTH 3/B SHEET HARD BALSA AS CANARD STABUZER/ELEVAO I/B WIRE JOINS ELEVATOR AND HORN FORMER I/B PLYC~ J SOUD BALSA NOSE BLOCK HOLLMED SCREWS V8 BALSA SHEET BOlTOM CROSSGRAIN NOSE GEAR BLOCKS AND STEER 1/B PLY KATOl COVER ARM tVVUNT TO I/4PIYWOO BULKHEAD ALERON SERVO IN FOAM WING .- RODS U*ERTh HORNS C 2 WHEELS ALLTHREE I/4X B- LEADING EDGE 5/32WIRE MAIN 3FR HAtY5V16BALSA SHEE WING INTO HARDWOOD BLOCKWVERINGTOPAIJD BTTOM BALSA BLOCK TIPS FLIP CHIP CATANI rrMEflT iUUk~ANULHAI-U MY~ww FU5IN WfTH ThAT CHIP IM GLTTNSOUI4DIWGFLEW OFP TOI-IOMU-AND SUPERID LI ose AR irs ALL oK EALATITFINJO TWOGEHDA/ 010 VU VISION TO CAN BEE TIIRU TI -NOW WAIrIN wOWOMANGALS F THEYREFIND ALL REMEM9ERFORGLT- LIBTENI 70 ME CAPTAIN 7 LONG 1iPSITURWOW- NOWlERETHAT FUEL7 -THERESTHREE MYSTERY NIIO GOT LOT~ ~I DONT \SMOW / FORM S I/B PLYVE3X USE LOTS OFHINGES ZZ. I/4SHEET HARD BALSA RLCOERS-FINS BUTZ HB AO PUP ON KRAFT MOUNT MUFFLER 106 ZINGER PROP NOT JUST TURNAROUND 1/4-20 NYLON SCREW INTO WING MOUNT BLOCK FIBEGLASS CLOrH C/S ONLY 4 BLOCKS VBSHEET wa- ON 3A650I / NYLON CUPS Left Nick Nicholson left finished Firebolt Air Force paint scheme based Grumman FSW aircraft now under construction author right chose Navy scheme Nicks model first Firebolt fly bugs worked out model before authors model flown Right Two Va-in nylon bolts anchor wing place tricycle landing gear mounted fuselage Left Power comes HB 40 POP Blitz engine Zinger pusher prop Read authors comments text about props pushers special muffler available HB ideal pusher installation Right Conventional strip aileron linkage couldnt used inside fuselage due engine location servo installed under removable hatch linkage direct ailerons works well 111/2-jfl root 9-in tip 16% root thickness 17% tip thickness typi cal full-symmetrical airfoil leading edge swept forward tip 4 ahead root horizontal stabilizer area 138 sq 23% wing area wanted two vertical fins like appear ance knew lot vertical fin area would necessary fins close balance point total area two fins 145 sq 25% wing areareally necessary Later Ill cover found plane will fly fin prefer single fin styling should safe go fin problem model canard design achieving proper balance point adding nose weight neces Left Removable plywood hatch provides access radio gear Battery fits hollowed-out nose block Throttle rudder elevator servos mounted far forward help balance Right 24-in aileron extension cable goes receiver back wing opening servo plugged Despiite forward radio installation additional weight necessary nose balancing 34 Model Aviation I4S SB LEAD/AN EDGE DIHEDRAL UNDER EALII WINGTIPSTAB AND ELEVATORS WRAP CENTER SECTION WITH FIBERGLASS CLOTH AND EPOXY FOAM WING CORE________ SHEET WITH IIG BALSA _________FOAM WING CORE TEMPLATES 0137 ON BOTTOM I/B MIRE TO SUIT AILERON SERVO _____fGALSA CONTROL HOR BLOCK AlL ERONS AILERON LINEAGE _____00 ____________WING S BL4 PLY— 4 H NYLON4 NOSE GEARAl BLOLW H GA 4 10 [IREMOVABLE I/N PLY NATCN 5/55 WIRE LANDING GEAR INYLON HINGE LOCATION h TWIN FINSRUDDERS IG BALSA POSITION/ S I/S HARDWOOD DRILL AND TAP I/4-GO FUSELAGE TOP PLANKINGIIII1111 NOT SHOWN IN THIS VIEWN 4A 5AGIl 15/1G SQUARE BALSA / /1 1/ 40 45 ENGINE 1 REQUIRED_______I-I VHAROWOOD BLOCKSWiNGCUTOUT ______ RADIAL ENGINE MOUNT I2I__ T1PIECESI/Sf PLY DOUBLERS FROM 7I7RECEIVERSERVOS HERE TO BULKHEAD S ____________ I ___ I C C 0 CD Full Size Plans Available Page 180 b1FUSELAGE SIDES/4 4 /BALANCE POINTFOR AILERON SERVO I/B BALSA/ II\II\IIG PLY HATCH FUSELAGE OUTERRANGE II\ I/B BALSAI/B BALSALANDING GEAR BLOCK BOTTOM SIDE PIECES~GROOVED HARDWOOD 0I5545B7BWHEELS 5 OR LARGER FIREBOL T FORWARD SWEPT WING CANARD N/C SPQRT/PATTERN DESIGNED AND DRAWN BY DICK SARPOLUS MODEL AVIATION I4 DOWELS BALSA Left The model finished Sig butyrate dope Panel lines drawn drafting pen numbers letters rub-offs canopy area airbrushed Kraft wheels no protruding axles give clean appearance Right Completed before applying finish allbalsa exterior can seen foam wing sheeted 1/16 balsa fuselage basically balsa box section requires little shaping sary tried hard locating engine above wing trailing edge stalling radio gear far forward put ting landing gear fuselage about 10 12 oz lead added nose can helped keeping wing light possible using light engine/muffler forwardswept wing requires balance point location farther forward straight swept-back wing Conversations Bob Hunt FM editor foam-wing expert have convinced attaching balsa wing sheeting epoxy would have lighter usual contact cements Plastic film covering stead painted finish would also have helped plane flies well 7 lb can save weight rear model will help avoid carrying lead weight nose fuselage basic balsa plywood box structure added jet air intakes styling lines rather square have modem jet appearance stab fin surfaces simply sheet balsa plastic canopy could used prefer all-balsa construction Retracts could used wing units installed close leading edge didnt want weight penalty fuel tank could located over balance point use fuel pump would good thing tank back close engine filling fuel moves balance point 3A rear must considered balancing model engine used real powerhouse new HB 40 PDP Blitz runs very well 10-6 Zinger pusher prop Con veniently HB offers special short muffler will clear prop installed pusher configuration HB also has muf fler spacer used Firebolt rugged engine HB 40 required 60-size engine mount used molded Kraft unit Pusher props available several manufacturers now Zinger offers full line pusher props like good qual ity might mention pusher righthand prop necessary modelers have commented looking Firebolt conventional prop mounted back wards could used pusher stallation Thats correct use engine converted opposite clockwise rotation can use conventional prop mounted backwards engine manufac turers offer reverse-ported crankshaft convert clockwise running felt easier use pusher prop right-hand prop appears mounted backwards pusher installation remember front curved surface prop faces forward direction flight whether pusher tractor configuration balance point range shown plans model fuel tank Firebolt has flown forward aft locations between suggest start forward location try moving balance point rear pitch response will change final balance point location will depend preference elevator throw will also affect response would guess radio Flight shots show full aerobatic capability design Author others have flown Firebolt report handles like capable Pattern/sport model Nick Nicholson notes pilot must remember little end front Initial trouble orien 36 Model Aviation exponential elevator control would handle more-aft balance point balance point location canard important first flights rear lo cation overly sensitive elevator puts although flying well otherwise Moving balance point forward dampened pitch response made handling much groovy Experiment get response like established initial balance point flight tests using formulas published Ron Van Putte Sport-Aerobatics column June 1980 issue Model Aviation Later friend Bernie Raad corporated formulas computer program make job easier done after Firebolt designed would have great help earlier project interested computer program described separate ac companying article Two prototype Firebolt models built friend Nick Nicholson saw plans wanted build right awayhe con fidence Nicks plane ready fly much earlier turned out test flying experimenting different trim surface throw etc done model finished early color scheme Grumman X-29 experimental aircraft received scalelike Navy paint scheme first test flight rewardingdown runway up air very sensitive ailerons Nick used wider aile ron stock sensitive elevator control discussed earlier first flight tried rolls loops inverted flight did enough feel good about model found engine cut low throttle nose tended come up down-elevator trim necessary tendency lessened balance point moved forward may find some down-trim desirable landings suspect less positive inci dence stab would eliminate com pletely plane can brought very Grumman photo X-29 plane provided ideas Firebolt FSW aircraft scheduled flown 1984 Air Force technology demonstrator program slowly no tendency stall good landings easy maneuver have avoided spin have read much about canards coming out spins second flight thinking about Nick put plane high-speed snap roll went least two-turn spinand came out very low excitement dont know what controls got out spin havent yet tried again crash did oc cur landing approach Nick ac knowledges pilot error simply became disoriented due canard con figuration Almost no damage done Nick now says flying Firebolt have remember little end front After several flights problem get used canard configuration its appearance various flight attitudes Both prototypes vertical fins rudders made 3/16-in balsa weight saving idea bad Nicks plane lost complete fin during flight lost rudder New fins rudders made firm -in balsa solve problem situation plane went weeds off runway prop broke engine over-revved briefly four nylon hinges two rudder broke off vibration plane sitting ground Sounds impossible happened have read several other RC canards having flutter problems fin and/or rudder believe due fin Continued page 139 tation lessens flight until becomes no trouble maneuver author has avoided spin canards have repu tation pulling out However Nicholson put spin recovered excitement dont know what controls used June 1984 37 St eve Helms RADIO SOUTH INC AUTHORIZED SERVICE CENTER FOR Featuring fast service qualified people latest equipment including SPECTRUM ANALYZER AM FM SIGNAL GENERATOR Call Steve Helms Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Kraft Systems 108 E Burgess Rd Pensacola FL 32503 904 478-6745 J AFutaba Distributor er Inquiries Welcome photos Firecat Topcat high winger Bicat Lasercat under way Firecat rings bell thats cause Smurthwaite key cog Jim Walkers American Junior empire Jim sold 232000000 models during fan tastic career cant relate Bobs exploits famous products paid dues Paye FBO local airport LaGrande OR posi tion now held son Tom former high school principal coach administrator modeler can fly products Filmed flying tapes expected available groups clubs near future Hope make big Jim Roberts Flying Model Aircraft Rt 2 Box 2547 La Grande OR 97850 live Detroit area pass ing through July 14-15 treat self visit Ford Test Track Mile Van Dyke Utica MI Thats site Flying Aces Nats IV big deal Youll see fun its best world flying airplanes events us barely know exist Youd get charge out Saturday 14th FAC banquethigh-spirited awards stuff Twelve dollars Ad vance Entry & Banquet Reservations FAC Nats IV PO Box 129 Birming ham MI 48012 will get doings Ive FAC Nats Utopia Bill Win ter 4426 Altura Ct Fairfax VA 22030 Firebolt/Sarpolus Continued page 37 rudder being close engine subject lot vibration Use firm V4-in balsa fins rudders plenty hinges have no further trouble Nicks Firebolt handled okay coming dead engine after fin broken off flight assume fin provides sufficient vertical area addition flight experience Nick have accumulated Firebolts Lance Schneider also has some stick fime Lance best local RC fliers value opinions about new aircraft watched him fly Firebolt through variety maneuvers noticing axial rolls round loops inverted passes some beautiful landings said handled very well much like good Pattern ship would have thought found stable particularly landings plan work another canard design di rected toward Pattern performance looks like will building pair construction notes will brief Firebolt structure simple can built very quickly prefer cut out necessary parts before beginning assembly get own kit ready go dont have local foam wing cutter can recommend source Lou Wolgast 40 Castlewood Trail Sparta NJ 07871 wing skinned i/IA balsa suggest applying balsa skin epoxy glue make lightest wing edge-glue VIA balsa pre pare wing skins lightly sand foam cores Vacuum get rid loose foam dust Use slow curing epoxy can heated warm water make flow better Apply epoxy balsa skin spreading wood leaving minimum glue Place skin core place skinned core back Continued page 142 WING SPAN44 WING AREAiSA coin ENGINEIS WEIGHT34 ISa Boise body oem in5 sheeting de cut lormers rolled Elena 2 shI HIGHLY AEROBATIC DESIGNED Weller Nio Denrock Jr PEPPERMINT PATTIE 15 STINGER II WING SPAN 38cr WING AREA AOSscin ENGINE4G EIGHTbibs boIse coslrocliOn die cul fornrnrS ribs 2sAts hAl rAze SIeS Good groend hendling gentle lending e good fiSt biSe PU LLY AEROBATIC cMASTER XJT Div BAR/RICH SALES CO 2 FAIRWAY-HANNIBAL MOO3dGn-3t4/22t 5803 June 1984 139 Futaba PCMJR Unlimited 8 Skywriter Mufflers Light weight tubular steel construction Injection optional coil smoke systems ovoilable Tremendous smoke output Available fit e Super Smoke new smoke fluid additive helps produce visible $300 denser longer hanging smoke 160. RenA Black H Meefoncr Ond bar SF F. Med P &et PS Sex 221 Mt Horns 1143453213 SBS6154 Model Aeronautics Association Canada NATS 84 Participation NATS Annual National Model Airplane Championships July 16-23 Cayuga Dragway Cayuga Kohier Ontario Glider Competition Cookstown Ontario July 21-23 information MAAC NAS COORDINATOR Clyde Halford 801 Mohawk Rd W Hamilton Ontario L9C 6C2 Control Line 14 classes Free Flight 12 classes Radio Control Pattern Glider Scale Stand off Giant Scale Helicopter Pylon FirebolVSarpolus Continued page 139 lower section foam block cut Apply top skin promptly add top foam block section over sheeted wing hold everything place plenty weight top Edi tor See Joan Alyeas article April issue following day edges sheet ing can trimmed flush core leading trailing edge stock added shaped Balsa tip blocks added shaped wing halves epoxied togeth er proper dihederal angle Use heavy fiberglass cloth epoxy around centersection joint Standard strip aileron linkage can used nylon horns can simply bolted inboard ends ailerons made small removable hatch over servo pro trudes lower wing surface appears cluttered servo typical bellcrank linkages could installed inside foam core cleaner appearance Fuselage construction starts gluing plywood doublers triangle stock basic side pieces sides joined bulkheads Alignment easy sides parallel firewall up second bulkhead Next outer bulk heads 3A6 balsa strips added basic fuselage accept outer fuselage sides fuselage top added back double fin location tack-glued nose block place rough-shaped removed hollowed accept nose weight battery pack glued place finish shaping horizontal stabilizer shaped 3/ balsa glued place fuselage wire elevator horn should inserted first before stabilizer added accept double vertical fins fuselage sides cut sanded inner top edges position fins proper angle fins epoxied place fuselage top planking completed between fins piece ardwood grooved North Shore Lake Erie site Camping Trophies 416388-0973 accept two 5A2-in wire landing gears side-by-side epoxied place across fuselage bottom just ahead wing open ing Vertical pieces hardwood glued inside fuselage take landing gear end pieces Before adding fuselage bot tom planking cut necessary holes fuselage bulkheads install two nylon tubing control linkages rudders plus flexible throttle cable linkage back through firewall engine Make provisions feeding through aileron servo extension cable Hardwood pieces drilled tapped take two -20 nylon wing mounting bolts forward ra dio compartment hatch 1/ plywood can held place six #4 X 1/2-in screws small hardwood blocks balsa can opy can assembled shaped before gluing fuselage top used Kraft molded engine mount Sullivan SS-8 fuel tank fuel tank positioned ahead firewall same direction conventional model fuel vent lines bent back over top tank run back through firewall engine long fuel lines cause problem engine runs fine through maneuvers did use muffler pressure tank vent HB muffler ideal model exhausting directly rear Nicks Firebolt used conventional long muffler ex tend forward flight showed plenty exhaust mess over side airplane plugged exhaust drilled same-size hole front end muf fler now points rear aircraft Works fine As far finishing model plastic film covering would course light est method Nick MonoKoted wing tail surfaces painted fuselage Hobbypoxy painted Firebolt Sig butyrate dope As base butyrate paint job prefer Silkspun Coverite wing tail surfaces its easy neat apply goes well sticks permanently easy fill frequently use Sig sanding sealer fuselage base finish Flying Theres much say regarding test flying canard other remem Fine Owaity Flying Models Catalog 81 50 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 RIDDE 042 ULL9L R 1mm thick Boxed 16 oz rubber per box Sizes Price $1250 per box ppd USA EngIsh BnIding nd Flying Instuctions V,y Canplete 142 Model Aviation CUSTOM TUNED ENGINES COMPETITION ACCESSORIES SPECULISTS IN CUSTOM COX TD & REED ENGINES STD & RIC CUSTOM PARTS FOR ALL COX ENGINES OVER 50 DIFFERENT PROPS DOZEN DIFFERENT GLOW PLUGS FOUR SPECIAL FUEL LUBRICANTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS SOLID CONTROL LINES & IGNITION ENGINE SUPPLIES ETC FOR DETAILED BROCHURE SEND 75* TO KUSTOM ICRAFTSMANSHIP PO BOX 2699 LAGUNA HILLS CA 02654 TELEPHONE 714 830-5162 3 3, Th 1' 4 Send SOt 158411985 Cetelo #FAI Model Supply ber little end front sug gested control surface travel aileron throw should set about 1/4 way ele vator throw about /s way rud der about 3/4 measured trailing edge surfaces As model amount surface movement should ad justed suit style flying Dont pull plane off ground too quickly several reasons Too much rota tion might cause prop hit ground although weve never problem controls will effective until flying speed reached Remember theres no air blast propeller going over control surfaces forward speed needed control also means slow way down flying go high throttle elevator may effective until get some airspeed again landing approach go-around apply throttle gradually Landings easy plane will settle slowly nose high very stable approach Wingovers can done look good hit rudder control before airspeed gone Again no air blast rudders help want try snap maneuvers spins youre own let know what happens may before try experiment change design calculate balance point location care fully dont fly tail-heavy airplane Keep plenty vertical fin area ducted fan version Firebolt would interest ing fan unit mounted fuselage above wing correct balance point would easy achieve Have fun flying tail first Radio Technique/Myers Continued aae 39 way Gear switch assuming bought Airtronics gyro fea tures airborne control panel turn gyro ON/OFF select between pots set two levels in-flight selectable sensitivity dont need sixth servo though receiver labeled airplane control terms has six servo receptacles Gyro Mixer box plugs Continued page 146 FREE 1984 Catalog tools Hobbyist S Miniature lathes 0 Milling/drilling machines Jig & circular saws Styrofoam cutter Phone 61 4/445-962 ~ hobby products co PO Box 07846 Columbus OH 43207 Hf 0 Pop said yourself oughta get hobby 1935 KINNER SPORTWING 1A size span Plans consist 4 sheets include construction booklet fin decals Plans 0 Postage WOODY FRANTZ 9126 E 67th Ct Tulsa OK 74133 918 250-0033 IIOBBYKIDEAwAYHOBBYHIDEAWAYHOBBYIIIOEAWAYHOBBYFIIOEAWAY FAMOUS BRITISH DIESELS CATALOG-DIESEL HANuBOuI 50 pp HOBBY HIDEWAYDELAVANIL 244-7389 61734 S HO8RYHTOFAWAYHOBBYHIOEAWMHOBBYjBEAWAYHOB6YHTDEAW June 1984 143 AEROMODELLER PLANS SPARES M/E PAvv D/C 3rd PRINTING