THE PROTOTYPE MODEL Com et Models kit called Jr Clipper 36-in wingspan rubber power model presented enlarged 35% over original structures have redesigned use engines great fun flier Although size Texaco model eligible Society Antique Modelers SAM com petitions due its rubber-power origins original kit introduced 1938 series directed lacked funds buy engines attracted larger gas-type models featured some sort device produce hum rubber motor un wound Usually ratchet attached propeller vibrated strip metal resulting sound much like todays kids produce sticking playing cards spokes bicycle Several manufacturers produced kits such devices including Scientific Models Flea Berkeley Buccaneer 30 Cleveland Models Polish Valor Comet also similar rubber-powered Zipper Jr Clipper remained com panys line well 1 950sseemingto indicate popular Placing Jr Clipper drawings along side classic 6-ft Clipper Mk shows rubber-powered version almost exact half-size reduction big Although Jr Clipper plans 88 Model Aviation Top No matter size see aii Ciippers beautiful behold particuiariy flight classic gem almost irresistible gently cruises across sky Above Carl Goldberg reduced immortal 8-ft Clipper Mk gas desIgn 38-in rubber-powered sport model Now Doc has enlarged slightly contemporary /aA radio-assist desIgn list designer genius Carl Goldberg obviously present Structures Jr Clipper much simpler Clipper Mk simplifications retained version flat-bottom wing airfoil spars outer surfaces flat stabilizer fast work compared big gas-powered version Nonethe less enlarged Jr Clipper has aesthetic beauty big its lovely elliptical planform lines Jr Clipper 35% possesses better average wind penetration models size type thermals light lift may just model anyone wanted small-size Clipper put off need cut out ribs etc Construction Wcod sizes close minimum adequate structural integrity No doubt fuselage could have built i-in-sq balsa specified /16 weighs very little especially corners sanded round larger size also provides rigidity aid boxing step laminated outlines stabilizer/ elevator fin/rudder made flexible balsa strips have mois tened ammonia diluted water form inside outline shape first cut some rigid material such foam board trace plan shapes onto form material aid carbon paper moistened balsa strips coated aliphatic resin such Sig Bond pulled over form held masking tape Allow overnight drying place oven set 1250F few hours cyanoacrylate glue CyA can used nearly construction steps will greatly speed up completion project keeping weight minimum Use 5-min epoxy join wing halves install firewall Wing Cut trailing edge TE sections very lightweight balsa Trace plan shapes onto balsa carbon paper Laminate leading edge LE directly over drawing hold pins placed July1986 89 Loft Elliptical shapes areformed soaking balsa strips ammonlawaterand laminating around foam board outlines Aiiowthe glue dry ovemlghtto make sure retain shape Right simple-to- fabricate elevator horn filler piece make neat efficient system Notethe verythin hinges possiblewith Mylarsheet material Thesearealmostessential hingethethin atripthat makes upthetail Left Simple removable cowl permltseasyenglne accessand main tenance retaining original rubber-powered nose outline kit dummy balsa hardwood engine cylinder combined clickerto makeengine-like noise Above Elevator rudder hinged small sections Rocket City Mylar hinge material Lightweight connector system described text Ultra-mimpie servo mounting aone witn tape inagea --r enas uoo wire enas Baisa stick pushrods work well ample room servos 225 mAh battery outside strips easiest method making ribs first make Xerox copy plan cut out rib pattern copy scissors affix pattern appropriate-size sheet C-grain balsa rubber cement Cut ribs pairs carefully remove paper cement sand wing constructed completely flat building board top spars pulled down tips no tapering spars required Add shear webs front spars wing still building board prevent warping Using pre-tilted center section ribs after both wing halves have built block up tip dihedral height block-sand proper bevel aid square edge building board two halves joined 3-mm epoxy clamp center ribs together clothespins Add center section strips Yn ply dihedral gusset feel uncomfortable model did have dihedral gusset has spun out damage occurring Sand LE TE contour shown plans either before after putting dihedral covering would almost sinful cover such beautiful structure opaque material No doubt Jr Clipper wouid make iightfui rubber-powered model engIne RC gearwere ieftoutand asizabiebraid rubber big prop substituted wing shrink both sides panel equally go along helps prevent warps Tail surfaces Use lamination tech nique make outlines place outlines over drawing add internal structures Cut sections apart trial-fit hinges horns prefer cover sections before installing hinges elevator tiller required performance reasons using makes model look nice fabricated music wire K&S brass strip silver-soldered together StaBrite solder works well electric soldering gun Obviously external horn could used wire joiner connect two elevator halves used section Radio South Mylarfiber-coated hinge material CyA-glued slots anchored small sections toothpick Other choices would include Ace RC nylon hinge material Mono Kote hinges Fuselage Construction classic twosides-built-one-over-the-other using scraps masking tape prevent sticking sides popped apart table knife assembled box Cut drill firewall 3-48 bolts nuepl62 Sheliy Lorance shows off dads istest prideand joy enlargedCometJr Clipper 90 Model Aviation simple m Irdeveloping what appearsto complex color scheme ppers no matter what size aiways iook best done yeiiovi something Balsa 760 sq Wing Area Engine 90-160 Glass Cowl Super Hinges Rolled Plans 72 Wing Span 56 Fuselage Assembly Manual Easy Construction Pre-Formed Aluminum Landing Gear HOYER HOBBIES Apply tb first coat polyurethane varnish let dry thoroughly Finishsand thepolyurethane 320-grit paper apply second coat box dry install hardware covers ensure small hinge screws will hold squirt some Zap-A-Gap screw holes before assembly Cut slit pipe insulation material airplane support slots cover Cut Zap-glue foam rubber transmitter fuel can cavities Mount handle axle wheels ensure fit properly may have trim exces sive polyurethane mounting holes first time use Flight Assis tant flying field prepared endure jealous remarks fellow modelers will find however after first barrage snide remarks referring laziness lack strength carry own flight box wherever go friends will start asking such questions did get plans long did take build about building Jr Clipper/Mathews Continued page 90 blind nuts mount engine screws Fabricate Jigs 1 2 directly over drawing Part FR 1/16 ply should drilled accept already-bent landing gear unit Place left frame over plan weight down Install two jigs appropriate slots checking absolute squareness both planes carpenters square 900 triangle should used check squareness step assembly CyA-glue jigs left side place right side over Again check alignment satisfied CyA-glue right side jigs Pull tail posts together hold clothespins again checking square ness CyA-glue together Cut cross braces pairs using top view guide Install working front back technique will produce c5~f EASTERS PA 7x 3 7x 35 8x 4 $400 per blade $800 per pair PlOP HUB ASSEMBLY U 110 049 051 engines electric motor equivalent WeightS grams $1500 PROP BLADES FOR HUB 8 110 lable 6x 3 $400 per blade $800 per pair PROP HUB ASSEMBLY 8 111 0 engines electric motor equivalent 20 grams$2000 PlOP BLADES FOR HUB 8 111 lable n 9 x 4 10 x 4 lix 4 $500 per blade $1000 per pair Send SSAE tor catalog sheet complete line AlAN pIRPORBANCE 0*50 LAUNdIEO GLINERS PROM LIGMTREICMT ALUMINUM BEVERAGE CANS TWO PALL SIZE PATTERNS YOUR COOICE ILLASTRATBO PABBICATIAN ANN PLYING ISSTNACTIONS NRO AMOITIONAL PATTERNS $125 EACO OR SIA PACE PICK NB BCE-i ornp ~7QB well-aligned fuselage box time Remove box building board install firewall aid top view guide landing gear must now installed followed Bulkheads C D Finish fuselage adding front sheeting nose blocks sand unit nice contour Radio installation prototype model came out slightly under 18 oz 100 mAh battery indicating use micro servos must servos mounted Lite Ply rails servo tape wood first hardened application CyA tape will stick pulling lcose wcod grain plan details simple lightweight pushrod system Unfortunately available flex-rods light enough use type model elevator horn buried needs very careful set servo end Z-bend neutral before placing permanently Some adjustment course available positioning servo placed 225 mAh battery against firewall Royal Vanguard receiver wrapped foam immediately behind servos almost directly under center gravity CG No ballast required setup Control surface throws model such wide speed differential power poweroff mostly matter pilot skill Should have dual-rate system elevator rudder use mini mal throws power switch much higher throws glide set up QUALITY FREE FLIGHT KITS AND SUPPLIES FOR COMPETITION AND SPORT SINCE 1975 Dealer inquiriesCatalog 50 invited .-BLUE RIDGE MODELSE. BOX 429SKYLAND N C28776 SILICONE TUBING BMALLIOBZ 411 8500 10sa taol NED002 411 $400agee ate eel LACeR 20 dl 0600 01 za ate eel ua CAN POOTPAIO L4RRY DODGE AERO INC 110210 Manning Ave N lwater MN 55082 PAW DIESELS Englands Finest 048 35 RIC STD Send $100 list Eric Clutton 913 Cedar LanO Tullahoma Tenn 37388 162 Model Aviation Astrostar 95 Stratostar 95 Aero star 95 10612 Jordan Avenue Chatsworth CA 91311 8183414760 SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO-PAAKSKOKU-FAN 3-ojewS 36000IR BIBMA2000 20 poge CATALOG 5200 go SASSSCALE MODEL RESEARCH SaINIACIOn2324 rIOMOdReaB Won 0IOAOIRR4COMb Moo CA 03226 $ES TISERS INDEX AMA Membership55 Academy Aviation R&D34 Ace Radio Control154 Aerospace Composite Products153 Airtronics2 Altech MarketingCover 3 American Jr Aircraft Co152 Argus Specialist Publications35 Astro Flight32 Beer Can Bombers162 Bergeron Enterprises160 Bladder Grabber73 Blue Ridge Machinery & Tools152 Blue Ridge Models162 Dave Brown Products43 Bru Line Industries54 Byron Originals20 CajunRCProducts138 California Model Imports47 CaRa Products47 Carolina-Taffinder139 Johnnie Casburn Mfg54 Champion Model Products158 Circus Hobbies132-134 Cleveland Model Supply54 Eric Clutton162 Consumers Guide14 Coverite1 84 Cox Hobbies47 Craft-Air81 D&D Engineering131 DGA Designs146 Dana Aerospace157 Davis Diesel Development130 Detroit Expo47 Larry Dodge Aero Inc162 Dodgson Designs157 Dougs Hobby Shop140-145 Du-Bro Products Inc9 Dynathrust Props45 Experimental Aircraft Assn33 FAI Model Supply49 FHS Supply Inc4 Fiberglass Master163 Flyline Models155 1 total rudder l elevator measured widest point dont have dual rates particular system use gentle thumb during powered portion flight Another variable lies particular approach like Old-Timer-like RC assist flying Some prefer using two head gaskets engine conjunction 5% nitro fuel 8-3 prop long low-powered engine run Others like use Foam Scale Models152 Fourmost Products43 Fox Mfg45 Funn Fly 86127 Futaba19 GM Precision Products76 Gator RC Products40 Geometron Co146 Carl Goldberg Models75 Gorham Model Products11156 Great Planes Model Mfg Co147 Harry B Higley & Sons163 Historic Aviation13 Hobby Barn128-1 29 Hobby Horn49 Hobby Lobby International160 Hobby Woods32 Holleys Silent Flight130 Hoyer Hobbies162 Ikon Northwest Co161 Indy RC Sales Inc148-1 50 Interwood Co163 Jacks Models158 Jomar139 JTec37 K&BMfg131 K&S Engineering160 K&W Enterprises162 Kustom Kraftsmanship135 Leisure Electronics23 Lone Star Models41 McDaniel RC Service37 MACS Products152 M&W Models161 Master Kit161 Messers Quality Model Prod155 Micro Mark147 Micro Model Engineering131 Midwest Products156 Model Magic Products41 Model Rectifier CorpCover 2 Sid Morgan Plans158 Morley USA157 30% nitro 6-3 prop get way up hurry Which choose course will af fect desirable amount control throw Covering decorating prototype Jr Clipper 35% covered Mono Kote would have lighter covered Japanese tissue clear dope would viable choice larger radio equipment used wife violently allergic dope fumes usually choose heat-shrink covering material avoid hayMutchlers Hobbies136-1 37 NEPRO154157 Northeast Screen Graphics155 North Products153 Off Ground Models161 PAC Model Supply45 PK Products43 Pacer Technology153 Lewis Pancost139 Bob Parkinson Flying Models40 Penn Valley Hobby Center160 Pica Products15 Polks Hobby6-7 Progress Mfg Co151 Pro-Tune Corp49 Radio South154 Repla-Tech International152 Robbe Modellsport21 Roush Mfg54 SR Batteries49 SachsbyTG139 Scale Model Research162 Shamrock Competition Imports131 Sheldons Hobby Shop22 Sig Mfg Co514 Standale Aircraft152 Superior Aircraft Materials37 Swanson Associates160 T&D Research Associates138 Tatone Products Co33 Tidewater Hobby Enterprises45 Top Flite Models Inc34 Tower Hobbies159 VLProducts22 Victor Engineering40 WE Technical Services8 Williams Brothers32 Wilshire Model Center34 Windsor Propeller Co138147 Wing Mfg Co14 World EnginesCover 4 Zenith Aviation31 Nick Ziroli Models158 ing dope outdoors decoration outlines original kit model shown plans placing covered sections over plansone can trace decoration outlines through transparent covering pencil designed use Mylar overhead projection plates Dixon Vis-aid 38 school supply firms carry equivalents An adjustable French curve rubber-covered wire things sold drafting supply sections useful developing July1986 163 ZA 7 ~1 -1- youngster will easily , build consistently obtain sustained soarBing flight reduced scale competi tion glider Quality kit includes contest balsa tor two gliders catapult educational flight con struction manuals $495 ppd MioNAL lNN~ATl\tE PRODUCTS FOR NEW CATALOG HARRY B HIGLEY & SONS INC P o Box 532 GLENWOOD ILL 60425 FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flite Jemco Nosen Pilot Stafford Radials Behrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please include names models interested parts call between 9AM 0 PM EDT information C0D ordering hope hear youl F BERGLASS 7031890-6017 Dept MA ft fox 530 Goodoiew VA 24095 No 517 Fake Ford$575 RO Sportster reminiscent Ford Trimotor 3-1AA engines 3 RO channels Wingspan 50 Two plan sheets No 518 Project P-i 3$325 FF Scale German WW Ii flying wing has twin rubber motors spans 26 No 519 Gee Bee R-1$475 CL Profile sport flier 25 engines spans 361/4 No 520 FlIght Assistant$1150 Flight box wheels helps Power-plane modelers Two sheets No 521 Comet Jr Clipper Plus 35$650 RC Old-Timer sportster /2A two RO channels Wingspan 48% No 193Stalette CL Stunt model McDonald winner 1978 1980 1982 FAI World Champs $ 375 Ne 239Bk. Eats AC Ken Willards fonnation plane 4-channel 10-power$ 375 Na 262Crashmastbe CL Crash-proof trainer two sizesl 5-30- 3540-power$ 125 No302Eel F1S ACSarpolus O4gdactedfaospnrtflierfnr2-chanIiel Balsa wings tail fuse structare$ 275 Ne 3101930 Fleet SIphon AC Sport Scale 35-40 4-channel Wingspan 56 scale Two sheets$ 625 No 314Deake B AC Ken Willards flying hout f 3-channel 1 5pnwer Fly nod removable gear$ 375 No 326Tayter Cob RC Don SwI ls Schoulyard-Scale f 049s 2-3 channel Spans 50 in$ 350 Ne 332Zephyr RC Small 2-channel glider hood-launch tow thermal singe snaring$ 200 Na 388Laser 200 RC Spoil Scale replica championship Aerohatic flier Uses 40 power 4-5 channel Two sheets$1075 Ne 414ElecIuIc Spauk AC electric-powerod too flier 05 motor 3-channel AC scaled up 1939 rubber-power favorite$ 850 No 422Sceoter AC Two-Meter Sailplane has won Nats event 19821983 plus other contests$ 550 No430keatulde AC Zippy little spnrtslerfnr 10-15 power nod 3-channel RC$ 400 Na 433WaIte Up AC Electric-powered glider 2-3 channels 035 motor spans 52 in$ 450 Ne 438Ceuber FF Embryo Eodurance rebber-power fun ship has big-model characteristics$ 200 No 440Cavahr AC Old-Timer-like sew design has huge wing fur slow easy flights 35 pawer 3 channels Two shoots$1 725 No 444Ftrebelt AC pusher canard sporfipattern uses 40 pasher engine 4-channel Has swept-forward teem wings$ 650 Ne 447VA Else Auseulca AC Old-Timer %A Texaco model 049 glow 2-channels$ 650 Ne 452Ru Bee 2 AC Onnrter-scale spans 71 uses 90 power Four sheets$1600 No 454Sweet P-30 FF Neat stick-uod-tissue Outdoor Aubher P30-class model isa contest-winner$ 200 No 457Spectra AC Electric-power 05-size motor uses 3 different wings sport snaring aerobatics$ 700 Na 4684-40 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$ 650 Ne 463Ptatyhelmhotheu VI AC %A Pylon racer uses lots ito ply built-up structure fur strength lightness$ 475 Na 465SIen Moot AC Fun-fly sportstor 40-size engines spans 52 Lightweight stractore$ 700 No 468Smutber CL Slanter 29135 power Design based hybrid SmeethiolNotiler$ 675 Ne 470Streker AC Mid-wing spnrtster uses 40145 four-stroke engine spans 50% tail-dragger$ 650 Ne 478Buttercup AC Cute ellis spul-tuter uses micro 2-ch AC poise-rudder Spons 27 tsr 020-035 power$ 300 No 479Fear-Stroke Reenter AC SportlAerubutics ship has 19200 styling uses 90 4-stroke engina spons 85 2 sheets61100 Na 482BeideaAger AC SporffAerohutic model looks like Golden Ago spnrtster 60 engines spans 62 in$ 750 Na 483CBS Hawk Ultratigllt FF Outdoor Gas Scale plane uses CO-2 power spans 29 in$ 300 Ne 487Cap 21 AC Scale Aerehutic plana 40-size engine spons 62 Two sheets$1000 No 488MS-7 FF Jumbo Anbher Scale 1920-era Thomas Morse Scout biptuon spans 37 in$ 500 Ne 490Weekender AC Low-wing sport flier 20-size 4-stroke engine spans 47% in$ 575 No 485FW190 AC Hued-launched all-balsa scalelike sportster 1 0-1 5 engines aod hen AC channels Spans 39 in$ 425 No486P47 Thuludeekeit AC Other halt Ongfight Don has similar characteristics FW-1 90$ 425 Ne 457Meekatfee Pisces PF odour ruhher cabin model ideal beginners Spoon 20% in$ 200 Ne 4994-50 AC Dec Mathews greal spnrt flier 60-size four-stroker engine spans 70 iwo sheets$1275 Ne 500Fekker DVU AC Sport scale model WW moongiune uses 90 tour-stroke engine spans 83% Two sheets$1600 Nm 501Eledecker CL Sport scale model early WW muongiane %A power spans 23ih in$ 200 Ne 502RI Wink vagabond FF Sport flier down-sized 02-powered version 1940s cabin plane Spans 33% in$ 225 No 503Dozzbat AC Singe-snarer spans 60 uses 2 AC channels$ 750 No 504Turbo Learn B FF gabber-powered scale model spoos 19% in$150 Na 585P35 Llgbtutiq CL Spout Scala tighter spons 65% weighs 10th uses twin 35s Two sheets$1175 Ne 506Playniate AC Sport flier tor 3 AC channelo 1 5-25 engines spans 50 in$ 650 No 507ltummlekId FF Hot class MB Gas competition plane won 85 Nuts$ 750 No 5086-250 CL Prof lie scale WW Ii bomber twin %A engines spons 30% in$ 400 No 509Beacon 18 FF Hued-Lunecked Glider features curved 18-in wing OT$150 Ne 510Stemper FF Hued-Launched Glider has angular 18-in wing OT$ 150 No 511FIS CL %A profile scale tighter spans 17 has tricycle luoding gear$ 200 No 512Extra 230 AC Giant Scale acrobatic plane spuos 8 ft uses Ouodra engine Two plan sheets$1650 No 513Black Beauty AC Singe-snaring racer has teem wing 3-ch AC spans 114 in$ 750 Ne 514Neely T AC Spurtater %A 2-3 channel AC spout 52in has adjustable flaps$ 475 No 515Westlalel WI*twtod AC Sport Scale WW twin-engine British fighter 10-size engines spans 55 Two sheets61150 No 516Envoy CL Stuoter 40146 power spuos 58 in$ 675 1 ii as i 0 - c-J 0 CNJ 0 0 -0 4 ZO 0 OCO 0 -E - CO lo 0-- 0 V 0 0 flb COG 0 00 - 15 0 0 CO -a 00 CO 0 CO 0 atd 0 CO IDO CO 0 00 CO 0 00 en at mc NAME fl en 00 0c N _ 0STATE U Circle numbers plans wish order 193 332 440 463 483 499 506 513 239 386 444 465 487 500 507 514 262 414 447 468 488 501 508 515 302 422 452 470 490 502 509 516 310 430 454 478 495 503 510 517 314 433 457 479 496 504 511 518 326 438 460 482 497 505 512 519 520521 Plan price includes first class postage US deOvery Air Mail over 300 miles orders outside US please add $250 Air Mall $125 surtace mail planl Moke Check money order payable US lands Model Aviation AMA 1810 Samuel Morse Dr Rostos VA 22090 Please allow 3 6 weeks delivery Please print carefully Enclosed $ ____________________________________ STREET CITY ZIP steady Smooth curves can carefully draw outlines however bottom surfaces can traced using upper outline guide Sig Stripe Rite tape 3A2-in -in widths will flex well around curves can widened afterward electricians tape edges should sealed some sort clear material prefer Sig Sky brite applied along seam small brush prevents seepage color coats Use paper masking tape cover areas painted lightly score MonoKote * 400 steel wool just enough remove some gloss Glean surfaces painted acetone avoid touching fingers afterward Poly-U Super Poxy Skybrite can sprayed onto MonoKote will adhere well used Poly-U particular model Alter shaking spray can light mist coat applied can 12 away surface made no effort completely apply heavy layer paint light coating produced semi transparent color real beauty paper masking tape electricians tape Stripe Rite removed fresh line Stripe Rite con trasting color applied trim engine compartment removable cowl front primed Skybrite primer sprayed separately Flying problem models type inadequate wind penetration Some models just wont turn down wind must kept upwind times Others will climb nearly straight up moving forward Still others will handle windy conditions well will glide like lead sleds calm air conclude such variables wing loading CG placement need selected according wind velocity other words often fly windy weather may better ballast model wind some glide duration will lost CG point shown plan windy conditions move rearward ht winds some reason Jr Clipper 35% behaves better wind other general type Ive flown Perhaps wide fuselage profile helps . tapered flat-bottom airfoil. longer-than-average tail moment Whatever reason model penetrates well will turn upwind downwind ease will float lightest lift wouldnt mind taldng credit honest ly feel genius Carl Goldberg Hand launches model wellcontrolled little tendency veer off side drop like stone Jr Clipper 35% tends climb its wing rather prop gives straight out up climb rather corkscrew Slow-speed characteristics excellent Gentle well-placed landings easy wind just vety nice little airplane 164 Model Aviation
Edition: Model Aviation - 1986/07
Page Numbers: 88, 89, 90, 162, 163, 164
THE PROTOTYPE MODEL Com et Models kit called Jr Clipper 36-in wingspan rubber power model presented enlarged 35% over original structures have redesigned use engines great fun flier Although size Texaco model eligible Society Antique Modelers SAM com petitions due its rubber-power origins original kit introduced 1938 series directed lacked funds buy engines attracted larger gas-type models featured some sort device produce hum rubber motor un wound Usually ratchet attached propeller vibrated strip metal resulting sound much like todays kids produce sticking playing cards spokes bicycle Several manufacturers produced kits such devices including Scientific Models Flea Berkeley Buccaneer 30 Cleveland Models Polish Valor Comet also similar rubber-powered Zipper Jr Clipper remained com panys line well 1 950sseemingto indicate popular Placing Jr Clipper drawings along side classic 6-ft Clipper Mk shows rubber-powered version almost exact half-size reduction big Although Jr Clipper plans 88 Model Aviation Top No matter size see aii Ciippers beautiful behold particuiariy flight classic gem almost irresistible gently cruises across sky Above Carl Goldberg reduced immortal 8-ft Clipper Mk gas desIgn 38-in rubber-powered sport model Now Doc has enlarged slightly contemporary /aA radio-assist desIgn list designer genius Carl Goldberg obviously present Structures Jr Clipper much simpler Clipper Mk simplifications retained version flat-bottom wing airfoil spars outer surfaces flat stabilizer fast work compared big gas-powered version Nonethe less enlarged Jr Clipper has aesthetic beauty big its lovely elliptical planform lines Jr Clipper 35% possesses better average wind penetration models size type thermals light lift may just model anyone wanted small-size Clipper put off need cut out ribs etc Construction Wcod sizes close minimum adequate structural integrity No doubt fuselage could have built i-in-sq balsa specified /16 weighs very little especially corners sanded round larger size also provides rigidity aid boxing step laminated outlines stabilizer/ elevator fin/rudder made flexible balsa strips have mois tened ammonia diluted water form inside outline shape first cut some rigid material such foam board trace plan shapes onto form material aid carbon paper moistened balsa strips coated aliphatic resin such Sig Bond pulled over form held masking tape Allow overnight drying place oven set 1250F few hours cyanoacrylate glue CyA can used nearly construction steps will greatly speed up completion project keeping weight minimum Use 5-min epoxy join wing halves install firewall Wing Cut trailing edge TE sections very lightweight balsa Trace plan shapes onto balsa carbon paper Laminate leading edge LE directly over drawing hold pins placed July1986 89 Loft Elliptical shapes areformed soaking balsa strips ammonlawaterand laminating around foam board outlines Aiiowthe glue dry ovemlghtto make sure retain shape Right simple-to- fabricate elevator horn filler piece make neat efficient system Notethe verythin hinges possiblewith Mylarsheet material Thesearealmostessential hingethethin atripthat makes upthetail Left Simple removable cowl permltseasyenglne accessand main tenance retaining original rubber-powered nose outline kit dummy balsa hardwood engine cylinder combined clickerto makeengine-like noise Above Elevator rudder hinged small sections Rocket City Mylar hinge material Lightweight connector system described text Ultra-mimpie servo mounting aone witn tape inagea --r enas uoo wire enas Baisa stick pushrods work well ample room servos 225 mAh battery outside strips easiest method making ribs first make Xerox copy plan cut out rib pattern copy scissors affix pattern appropriate-size sheet C-grain balsa rubber cement Cut ribs pairs carefully remove paper cement sand wing constructed completely flat building board top spars pulled down tips no tapering spars required Add shear webs front spars wing still building board prevent warping Using pre-tilted center section ribs after both wing halves have built block up tip dihedral height block-sand proper bevel aid square edge building board two halves joined 3-mm epoxy clamp center ribs together clothespins Add center section strips Yn ply dihedral gusset feel uncomfortable model did have dihedral gusset has spun out damage occurring Sand LE TE contour shown plans either before after putting dihedral covering would almost sinful cover such beautiful structure opaque material No doubt Jr Clipper wouid make iightfui rubber-powered model engIne RC gearwere ieftoutand asizabiebraid rubber big prop substituted wing shrink both sides panel equally go along helps prevent warps Tail surfaces Use lamination tech nique make outlines place outlines over drawing add internal structures Cut sections apart trial-fit hinges horns prefer cover sections before installing hinges elevator tiller required performance reasons using makes model look nice fabricated music wire K&S brass strip silver-soldered together StaBrite solder works well electric soldering gun Obviously external horn could used wire joiner connect two elevator halves used section Radio South Mylarfiber-coated hinge material CyA-glued slots anchored small sections toothpick Other choices would include Ace RC nylon hinge material Mono Kote hinges Fuselage Construction classic twosides-built-one-over-the-other using scraps masking tape prevent sticking sides popped apart table knife assembled box Cut drill firewall 3-48 bolts nuepl62 Sheliy Lorance shows off dads istest prideand joy enlargedCometJr Clipper 90 Model Aviation simple m Irdeveloping what appearsto complex color scheme ppers no matter what size aiways iook best done yeiiovi something Balsa 760 sq Wing Area Engine 90-160 Glass Cowl Super Hinges Rolled Plans 72 Wing Span 56 Fuselage Assembly Manual Easy Construction Pre-Formed Aluminum Landing Gear HOYER HOBBIES Apply tb first coat polyurethane varnish let dry thoroughly Finishsand thepolyurethane 320-grit paper apply second coat box dry install hardware covers ensure small hinge screws will hold squirt some Zap-A-Gap screw holes before assembly Cut slit pipe insulation material airplane support slots cover Cut Zap-glue foam rubber transmitter fuel can cavities Mount handle axle wheels ensure fit properly may have trim exces sive polyurethane mounting holes first time use Flight Assis tant flying field prepared endure jealous remarks fellow modelers will find however after first barrage snide remarks referring laziness lack strength carry own flight box wherever go friends will start asking such questions did get plans long did take build about building Jr Clipper/Mathews Continued page 90 blind nuts mount engine screws Fabricate Jigs 1 2 directly over drawing Part FR 1/16 ply should drilled accept already-bent landing gear unit Place left frame over plan weight down Install two jigs appropriate slots checking absolute squareness both planes carpenters square 900 triangle should used check squareness step assembly CyA-glue jigs left side place right side over Again check alignment satisfied CyA-glue right side jigs Pull tail posts together hold clothespins again checking square ness CyA-glue together Cut cross braces pairs using top view guide Install working front back technique will produce c5~f EASTERS PA 7x 3 7x 35 8x 4 $400 per blade $800 per pair PlOP HUB ASSEMBLY U 110 049 051 engines electric motor equivalent WeightS grams $1500 PROP BLADES FOR HUB 8 110 lable 6x 3 $400 per blade $800 per pair PROP HUB ASSEMBLY 8 111 0 engines electric motor equivalent 20 grams$2000 PlOP BLADES FOR HUB 8 111 lable n 9 x 4 10 x 4 lix 4 $500 per blade $1000 per pair Send SSAE tor catalog sheet complete line AlAN pIRPORBANCE 0*50 LAUNdIEO GLINERS PROM LIGMTREICMT ALUMINUM BEVERAGE CANS TWO PALL SIZE PATTERNS YOUR COOICE ILLASTRATBO PABBICATIAN ANN PLYING ISSTNACTIONS NRO AMOITIONAL PATTERNS $125 EACO OR SIA PACE PICK NB BCE-i ornp ~7QB well-aligned fuselage box time Remove box building board install firewall aid top view guide landing gear must now installed followed Bulkheads C D Finish fuselage adding front sheeting nose blocks sand unit nice contour Radio installation prototype model came out slightly under 18 oz 100 mAh battery indicating use micro servos must servos mounted Lite Ply rails servo tape wood first hardened application CyA tape will stick pulling lcose wcod grain plan details simple lightweight pushrod system Unfortunately available flex-rods light enough use type model elevator horn buried needs very careful set servo end Z-bend neutral before placing permanently Some adjustment course available positioning servo placed 225 mAh battery against firewall Royal Vanguard receiver wrapped foam immediately behind servos almost directly under center gravity CG No ballast required setup Control surface throws model such wide speed differential power poweroff mostly matter pilot skill Should have dual-rate system elevator rudder use mini mal throws power switch much higher throws glide set up QUALITY FREE FLIGHT KITS AND SUPPLIES FOR COMPETITION AND SPORT SINCE 1975 Dealer inquiriesCatalog 50 invited .-BLUE RIDGE MODELSE. BOX 429SKYLAND N C28776 SILICONE TUBING BMALLIOBZ 411 8500 10sa taol NED002 411 $400agee ate eel LACeR 20 dl 0600 01 za ate eel ua CAN POOTPAIO L4RRY DODGE AERO INC 110210 Manning Ave N lwater MN 55082 PAW DIESELS Englands Finest 048 35 RIC STD Send $100 list Eric Clutton 913 Cedar LanO Tullahoma Tenn 37388 162 Model Aviation Astrostar 95 Stratostar 95 Aero star 95 10612 Jordan Avenue Chatsworth CA 91311 8183414760 SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO-PAAKSKOKU-FAN 3-ojewS 36000IR BIBMA2000 20 poge CATALOG 5200 go SASSSCALE MODEL RESEARCH SaINIACIOn2324 rIOMOdReaB Won 0IOAOIRR4COMb Moo CA 03226 $ES TISERS INDEX AMA Membership55 Academy Aviation R&D34 Ace Radio Control154 Aerospace Composite Products153 Airtronics2 Altech MarketingCover 3 American Jr Aircraft Co152 Argus Specialist Publications35 Astro Flight32 Beer Can Bombers162 Bergeron Enterprises160 Bladder Grabber73 Blue Ridge Machinery & Tools152 Blue Ridge Models162 Dave Brown Products43 Bru Line Industries54 Byron Originals20 CajunRCProducts138 California Model Imports47 CaRa Products47 Carolina-Taffinder139 Johnnie Casburn Mfg54 Champion Model Products158 Circus Hobbies132-134 Cleveland Model Supply54 Eric Clutton162 Consumers Guide14 Coverite1 84 Cox Hobbies47 Craft-Air81 D&D Engineering131 DGA Designs146 Dana Aerospace157 Davis Diesel Development130 Detroit Expo47 Larry Dodge Aero Inc162 Dodgson Designs157 Dougs Hobby Shop140-145 Du-Bro Products Inc9 Dynathrust Props45 Experimental Aircraft Assn33 FAI Model Supply49 FHS Supply Inc4 Fiberglass Master163 Flyline Models155 1 total rudder l elevator measured widest point dont have dual rates particular system use gentle thumb during powered portion flight Another variable lies particular approach like Old-Timer-like RC assist flying Some prefer using two head gaskets engine conjunction 5% nitro fuel 8-3 prop long low-powered engine run Others like use Foam Scale Models152 Fourmost Products43 Fox Mfg45 Funn Fly 86127 Futaba19 GM Precision Products76 Gator RC Products40 Geometron Co146 Carl Goldberg Models75 Gorham Model Products11156 Great Planes Model Mfg Co147 Harry B Higley & Sons163 Historic Aviation13 Hobby Barn128-1 29 Hobby Horn49 Hobby Lobby International160 Hobby Woods32 Holleys Silent Flight130 Hoyer Hobbies162 Ikon Northwest Co161 Indy RC Sales Inc148-1 50 Interwood Co163 Jacks Models158 Jomar139 JTec37 K&BMfg131 K&S Engineering160 K&W Enterprises162 Kustom Kraftsmanship135 Leisure Electronics23 Lone Star Models41 McDaniel RC Service37 MACS Products152 M&W Models161 Master Kit161 Messers Quality Model Prod155 Micro Mark147 Micro Model Engineering131 Midwest Products156 Model Magic Products41 Model Rectifier CorpCover 2 Sid Morgan Plans158 Morley USA157 30% nitro 6-3 prop get way up hurry Which choose course will af fect desirable amount control throw Covering decorating prototype Jr Clipper 35% covered Mono Kote would have lighter covered Japanese tissue clear dope would viable choice larger radio equipment used wife violently allergic dope fumes usually choose heat-shrink covering material avoid hayMutchlers Hobbies136-1 37 NEPRO154157 Northeast Screen Graphics155 North Products153 Off Ground Models161 PAC Model Supply45 PK Products43 Pacer Technology153 Lewis Pancost139 Bob Parkinson Flying Models40 Penn Valley Hobby Center160 Pica Products15 Polks Hobby6-7 Progress Mfg Co151 Pro-Tune Corp49 Radio South154 Repla-Tech International152 Robbe Modellsport21 Roush Mfg54 SR Batteries49 SachsbyTG139 Scale Model Research162 Shamrock Competition Imports131 Sheldons Hobby Shop22 Sig Mfg Co514 Standale Aircraft152 Superior Aircraft Materials37 Swanson Associates160 T&D Research Associates138 Tatone Products Co33 Tidewater Hobby Enterprises45 Top Flite Models Inc34 Tower Hobbies159 VLProducts22 Victor Engineering40 WE Technical Services8 Williams Brothers32 Wilshire Model Center34 Windsor Propeller Co138147 Wing Mfg Co14 World EnginesCover 4 Zenith Aviation31 Nick Ziroli Models158 ing dope outdoors decoration outlines original kit model shown plans placing covered sections over plansone can trace decoration outlines through transparent covering pencil designed use Mylar overhead projection plates Dixon Vis-aid 38 school supply firms carry equivalents An adjustable French curve rubber-covered wire things sold drafting supply sections useful developing July1986 163 ZA 7 ~1 -1- youngster will easily , build consistently obtain sustained soarBing flight reduced scale competi tion glider Quality kit includes contest balsa tor two gliders catapult educational flight con struction manuals $495 ppd MioNAL lNN~ATl\tE PRODUCTS FOR NEW CATALOG HARRY B HIGLEY & SONS INC P o Box 532 GLENWOOD ILL 60425 FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flite Jemco Nosen Pilot Stafford Radials Behrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please include names models interested parts call between 9AM 0 PM EDT information C0D ordering hope hear youl F BERGLASS 7031890-6017 Dept MA ft fox 530 Goodoiew VA 24095 No 517 Fake Ford$575 RO Sportster reminiscent Ford Trimotor 3-1AA engines 3 RO channels Wingspan 50 Two plan sheets No 518 Project P-i 3$325 FF Scale German WW Ii flying wing has twin rubber motors spans 26 No 519 Gee Bee R-1$475 CL Profile sport flier 25 engines spans 361/4 No 520 FlIght Assistant$1150 Flight box wheels helps Power-plane modelers Two sheets No 521 Comet Jr Clipper Plus 35$650 RC Old-Timer sportster /2A two RO channels Wingspan 48% No 193Stalette CL Stunt model McDonald winner 1978 1980 1982 FAI World Champs $ 375 Ne 239Bk. Eats AC Ken Willards fonnation plane 4-channel 10-power$ 375 Na 262Crashmastbe CL Crash-proof trainer two sizesl 5-30- 3540-power$ 125 No302Eel F1S ACSarpolus O4gdactedfaospnrtflierfnr2-chanIiel Balsa wings tail fuse structare$ 275 Ne 3101930 Fleet SIphon AC Sport Scale 35-40 4-channel Wingspan 56 scale Two sheets$ 625 No 314Deake B AC Ken Willards flying hout f 3-channel 1 5pnwer Fly nod removable gear$ 375 No 326Tayter Cob RC Don SwI ls Schoulyard-Scale f 049s 2-3 channel Spans 50 in$ 350 Ne 332Zephyr RC Small 2-channel glider hood-launch tow thermal singe snaring$ 200 Na 388Laser 200 RC Spoil Scale replica championship Aerohatic flier Uses 40 power 4-5 channel Two sheets$1075 Ne 414ElecIuIc Spauk AC electric-powerod too flier 05 motor 3-channel AC scaled up 1939 rubber-power favorite$ 850 No 422Sceoter AC Two-Meter Sailplane has won Nats event 19821983 plus other contests$ 550 No430keatulde AC Zippy little spnrtslerfnr 10-15 power nod 3-channel RC$ 400 Na 433WaIte Up AC Electric-powered glider 2-3 channels 035 motor spans 52 in$ 450 Ne 438Ceuber FF Embryo Eodurance rebber-power fun ship has big-model characteristics$ 200 No 440Cavahr AC Old-Timer-like sew design has huge wing fur slow easy flights 35 pawer 3 channels Two shoots$1 725 No 444Ftrebelt AC pusher canard sporfipattern uses 40 pasher engine 4-channel Has swept-forward teem wings$ 650 Ne 447VA Else Auseulca AC Old-Timer %A Texaco model 049 glow 2-channels$ 650 Ne 452Ru Bee 2 AC Onnrter-scale spans 71 uses 90 power Four sheets$1600 No 454Sweet P-30 FF Neat stick-uod-tissue Outdoor Aubher P30-class model isa contest-winner$ 200 No 457Spectra AC Electric-power 05-size motor uses 3 different wings sport snaring aerobatics$ 700 Na 4684-40 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$ 650 Ne 463Ptatyhelmhotheu VI AC %A Pylon racer uses lots ito ply built-up structure fur strength lightness$ 475 Na 465SIen Moot AC Fun-fly sportstor 40-size engines spans 52 Lightweight stractore$ 700 No 468Smutber CL Slanter 29135 power Design based hybrid SmeethiolNotiler$ 675 Ne 470Streker AC Mid-wing spnrtster uses 40145 four-stroke engine spans 50% tail-dragger$ 650 Ne 478Buttercup AC Cute ellis spul-tuter uses micro 2-ch AC poise-rudder Spons 27 tsr 020-035 power$ 300 No 479Fear-Stroke Reenter AC SportlAerubutics ship has 19200 styling uses 90 4-stroke engina spons 85 2 sheets61100 Na 482BeideaAger AC SporffAerohutic model looks like Golden Ago spnrtster 60 engines spans 62 in$ 750 Na 483CBS Hawk Ultratigllt FF Outdoor Gas Scale plane uses CO-2 power spans 29 in$ 300 Ne 487Cap 21 AC Scale Aerehutic plana 40-size engine spons 62 Two sheets$1000 No 488MS-7 FF Jumbo Anbher Scale 1920-era Thomas Morse Scout biptuon spans 37 in$ 500 Ne 490Weekender AC Low-wing sport flier 20-size 4-stroke engine spans 47% in$ 575 No 485FW190 AC Hued-launched all-balsa scalelike sportster 1 0-1 5 engines aod hen AC channels Spans 39 in$ 425 No486P47 Thuludeekeit AC Other halt Ongfight Don has similar characteristics FW-1 90$ 425 Ne 457Meekatfee Pisces PF odour ruhher cabin model ideal beginners Spoon 20% in$ 200 Ne 4994-50 AC Dec Mathews greal spnrt flier 60-size four-stroker engine spans 70 iwo sheets$1275 Ne 500Fekker DVU AC Sport scale model WW moongiune uses 90 tour-stroke engine spans 83% Two sheets$1600 Nm 501Eledecker CL Sport scale model early WW muongiane %A power spans 23ih in$ 200 Ne 502RI Wink vagabond FF Sport flier down-sized 02-powered version 1940s cabin plane Spans 33% in$ 225 No 503Dozzbat AC Singe-snarer spans 60 uses 2 AC channels$ 750 No 504Turbo Learn B FF gabber-powered scale model spoos 19% in$150 Na 585P35 Llgbtutiq CL Spout Scala tighter spons 65% weighs 10th uses twin 35s Two sheets$1175 Ne 506Playniate AC Sport flier tor 3 AC channelo 1 5-25 engines spans 50 in$ 650 No 507ltummlekId FF Hot class MB Gas competition plane won 85 Nuts$ 750 No 5086-250 CL Prof lie scale WW Ii bomber twin %A engines spons 30% in$ 400 No 509Beacon 18 FF Hued-Lunecked Glider features curved 18-in wing OT$150 Ne 510Stemper FF Hued-Launched Glider has angular 18-in wing OT$ 150 No 511FIS CL %A profile scale tighter spans 17 has tricycle luoding gear$ 200 No 512Extra 230 AC Giant Scale acrobatic plane spuos 8 ft uses Ouodra engine Two plan sheets$1650 No 513Black Beauty AC Singe-snaring racer has teem wing 3-ch AC spans 114 in$ 750 Ne 514Neely T AC Spurtater %A 2-3 channel AC spout 52in has adjustable flaps$ 475 No 515Westlalel WI*twtod AC Sport Scale WW twin-engine British fighter 10-size engines spans 55 Two sheets61150 No 516Envoy CL Stuoter 40146 power spuos 58 in$ 675 1 ii as i 0 - c-J 0 CNJ 0 0 -0 4 ZO 0 OCO 0 -E - CO lo 0-- 0 V 0 0 flb COG 0 00 - 15 0 0 CO -a 00 CO 0 CO 0 atd 0 CO IDO CO 0 00 CO 0 00 en at mc NAME fl en 00 0c N _ 0STATE U Circle numbers plans wish order 193 332 440 463 483 499 506 513 239 386 444 465 487 500 507 514 262 414 447 468 488 501 508 515 302 422 452 470 490 502 509 516 310 430 454 478 495 503 510 517 314 433 457 479 496 504 511 518 326 438 460 482 497 505 512 519 520521 Plan price includes first class postage US deOvery Air Mail over 300 miles orders outside US please add $250 Air Mall $125 surtace mail planl Moke Check money order payable US lands Model Aviation AMA 1810 Samuel Morse Dr Rostos VA 22090 Please allow 3 6 weeks delivery Please print carefully Enclosed $ ____________________________________ STREET CITY ZIP steady Smooth curves can carefully draw outlines however bottom surfaces can traced using upper outline guide Sig Stripe Rite tape 3A2-in -in widths will flex well around curves can widened afterward electricians tape edges should sealed some sort clear material prefer Sig Sky brite applied along seam small brush prevents seepage color coats Use paper masking tape cover areas painted lightly score MonoKote * 400 steel wool just enough remove some gloss Glean surfaces painted acetone avoid touching fingers afterward Poly-U Super Poxy Skybrite can sprayed onto MonoKote will adhere well used Poly-U particular model Alter shaking spray can light mist coat applied can 12 away surface made no effort completely apply heavy layer paint light coating produced semi transparent color real beauty paper masking tape electricians tape Stripe Rite removed fresh line Stripe Rite con trasting color applied trim engine compartment removable cowl front primed Skybrite primer sprayed separately Flying problem models type inadequate wind penetration Some models just wont turn down wind must kept upwind times Others will climb nearly straight up moving forward Still others will handle windy conditions well will glide like lead sleds calm air conclude such variables wing loading CG placement need selected according wind velocity other words often fly windy weather may better ballast model wind some glide duration will lost CG point shown plan windy conditions move rearward ht winds some reason Jr Clipper 35% behaves better wind other general type Ive flown Perhaps wide fuselage profile helps . tapered flat-bottom airfoil. longer-than-average tail moment Whatever reason model penetrates well will turn upwind downwind ease will float lightest lift wouldnt mind taldng credit honest ly feel genius Carl Goldberg Hand launches model wellcontrolled little tendency veer off side drop like stone Jr Clipper 35% tends climb its wing rather prop gives straight out up climb rather corkscrew Slow-speed characteristics excellent Gentle well-placed landings easy wind just vety nice little airplane 164 Model Aviation
Edition: Model Aviation - 1986/07
Page Numbers: 88, 89, 90, 162, 163, 164
THE PROTOTYPE MODEL Com et Models kit called Jr Clipper 36-in wingspan rubber power model presented enlarged 35% over original structures have redesigned use engines great fun flier Although size Texaco model eligible Society Antique Modelers SAM com petitions due its rubber-power origins original kit introduced 1938 series directed lacked funds buy engines attracted larger gas-type models featured some sort device produce hum rubber motor un wound Usually ratchet attached propeller vibrated strip metal resulting sound much like todays kids produce sticking playing cards spokes bicycle Several manufacturers produced kits such devices including Scientific Models Flea Berkeley Buccaneer 30 Cleveland Models Polish Valor Comet also similar rubber-powered Zipper Jr Clipper remained com panys line well 1 950sseemingto indicate popular Placing Jr Clipper drawings along side classic 6-ft Clipper Mk shows rubber-powered version almost exact half-size reduction big Although Jr Clipper plans 88 Model Aviation Top No matter size see aii Ciippers beautiful behold particuiariy flight classic gem almost irresistible gently cruises across sky Above Carl Goldberg reduced immortal 8-ft Clipper Mk gas desIgn 38-in rubber-powered sport model Now Doc has enlarged slightly contemporary /aA radio-assist desIgn list designer genius Carl Goldberg obviously present Structures Jr Clipper much simpler Clipper Mk simplifications retained version flat-bottom wing airfoil spars outer surfaces flat stabilizer fast work compared big gas-powered version Nonethe less enlarged Jr Clipper has aesthetic beauty big its lovely elliptical planform lines Jr Clipper 35% possesses better average wind penetration models size type thermals light lift may just model anyone wanted small-size Clipper put off need cut out ribs etc Construction Wcod sizes close minimum adequate structural integrity No doubt fuselage could have built i-in-sq balsa specified /16 weighs very little especially corners sanded round larger size also provides rigidity aid boxing step laminated outlines stabilizer/ elevator fin/rudder made flexible balsa strips have mois tened ammonia diluted water form inside outline shape first cut some rigid material such foam board trace plan shapes onto form material aid carbon paper moistened balsa strips coated aliphatic resin such Sig Bond pulled over form held masking tape Allow overnight drying place oven set 1250F few hours cyanoacrylate glue CyA can used nearly construction steps will greatly speed up completion project keeping weight minimum Use 5-min epoxy join wing halves install firewall Wing Cut trailing edge TE sections very lightweight balsa Trace plan shapes onto balsa carbon paper Laminate leading edge LE directly over drawing hold pins placed July1986 89 Loft Elliptical shapes areformed soaking balsa strips ammonlawaterand laminating around foam board outlines Aiiowthe glue dry ovemlghtto make sure retain shape Right simple-to- fabricate elevator horn filler piece make neat efficient system Notethe verythin hinges possiblewith Mylarsheet material Thesearealmostessential hingethethin atripthat makes upthetail Left Simple removable cowl permltseasyenglne accessand main tenance retaining original rubber-powered nose outline kit dummy balsa hardwood engine cylinder combined clickerto makeengine-like noise Above Elevator rudder hinged small sections Rocket City Mylar hinge material Lightweight connector system described text Ultra-mimpie servo mounting aone witn tape inagea --r enas uoo wire enas Baisa stick pushrods work well ample room servos 225 mAh battery outside strips easiest method making ribs first make Xerox copy plan cut out rib pattern copy scissors affix pattern appropriate-size sheet C-grain balsa rubber cement Cut ribs pairs carefully remove paper cement sand wing constructed completely flat building board top spars pulled down tips no tapering spars required Add shear webs front spars wing still building board prevent warping Using pre-tilted center section ribs after both wing halves have built block up tip dihedral height block-sand proper bevel aid square edge building board two halves joined 3-mm epoxy clamp center ribs together clothespins Add center section strips Yn ply dihedral gusset feel uncomfortable model did have dihedral gusset has spun out damage occurring Sand LE TE contour shown plans either before after putting dihedral covering would almost sinful cover such beautiful structure opaque material No doubt Jr Clipper wouid make iightfui rubber-powered model engIne RC gearwere ieftoutand asizabiebraid rubber big prop substituted wing shrink both sides panel equally go along helps prevent warps Tail surfaces Use lamination tech nique make outlines place outlines over drawing add internal structures Cut sections apart trial-fit hinges horns prefer cover sections before installing hinges elevator tiller required performance reasons using makes model look nice fabricated music wire K&S brass strip silver-soldered together StaBrite solder works well electric soldering gun Obviously external horn could used wire joiner connect two elevator halves used section Radio South Mylarfiber-coated hinge material CyA-glued slots anchored small sections toothpick Other choices would include Ace RC nylon hinge material Mono Kote hinges Fuselage Construction classic twosides-built-one-over-the-other using scraps masking tape prevent sticking sides popped apart table knife assembled box Cut drill firewall 3-48 bolts nuepl62 Sheliy Lorance shows off dads istest prideand joy enlargedCometJr Clipper 90 Model Aviation simple m Irdeveloping what appearsto complex color scheme ppers no matter what size aiways iook best done yeiiovi something Balsa 760 sq Wing Area Engine 90-160 Glass Cowl Super Hinges Rolled Plans 72 Wing Span 56 Fuselage Assembly Manual Easy Construction Pre-Formed Aluminum Landing Gear HOYER HOBBIES Apply tb first coat polyurethane varnish let dry thoroughly Finishsand thepolyurethane 320-grit paper apply second coat box dry install hardware covers ensure small hinge screws will hold squirt some Zap-A-Gap screw holes before assembly Cut slit pipe insulation material airplane support slots cover Cut Zap-glue foam rubber transmitter fuel can cavities Mount handle axle wheels ensure fit properly may have trim exces sive polyurethane mounting holes first time use Flight Assis tant flying field prepared endure jealous remarks fellow modelers will find however after first barrage snide remarks referring laziness lack strength carry own flight box wherever go friends will start asking such questions did get plans long did take build about building Jr Clipper/Mathews Continued page 90 blind nuts mount engine screws Fabricate Jigs 1 2 directly over drawing Part FR 1/16 ply should drilled accept already-bent landing gear unit Place left frame over plan weight down Install two jigs appropriate slots checking absolute squareness both planes carpenters square 900 triangle should used check squareness step assembly CyA-glue jigs left side place right side over Again check alignment satisfied CyA-glue right side jigs Pull tail posts together hold clothespins again checking square ness CyA-glue together Cut cross braces pairs using top view guide Install working front back technique will produce c5~f EASTERS PA 7x 3 7x 35 8x 4 $400 per blade $800 per pair PlOP HUB ASSEMBLY U 110 049 051 engines electric motor equivalent WeightS grams $1500 PROP BLADES FOR HUB 8 110 lable 6x 3 $400 per blade $800 per pair PROP HUB ASSEMBLY 8 111 0 engines electric motor equivalent 20 grams$2000 PlOP BLADES FOR HUB 8 111 lable n 9 x 4 10 x 4 lix 4 $500 per blade $1000 per pair Send SSAE tor catalog sheet complete line AlAN pIRPORBANCE 0*50 LAUNdIEO GLINERS PROM LIGMTREICMT ALUMINUM BEVERAGE CANS TWO PALL SIZE PATTERNS YOUR COOICE ILLASTRATBO PABBICATIAN ANN PLYING ISSTNACTIONS NRO AMOITIONAL PATTERNS $125 EACO OR SIA PACE PICK NB BCE-i ornp ~7QB well-aligned fuselage box time Remove box building board install firewall aid top view guide landing gear must now installed followed Bulkheads C D Finish fuselage adding front sheeting nose blocks sand unit nice contour Radio installation prototype model came out slightly under 18 oz 100 mAh battery indicating use micro servos must servos mounted Lite Ply rails servo tape wood first hardened application CyA tape will stick pulling lcose wcod grain plan details simple lightweight pushrod system Unfortunately available flex-rods light enough use type model elevator horn buried needs very careful set servo end Z-bend neutral before placing permanently Some adjustment course available positioning servo placed 225 mAh battery against firewall Royal Vanguard receiver wrapped foam immediately behind servos almost directly under center gravity CG No ballast required setup Control surface throws model such wide speed differential power poweroff mostly matter pilot skill Should have dual-rate system elevator rudder use mini mal throws power switch much higher throws glide set up QUALITY FREE FLIGHT KITS AND SUPPLIES FOR COMPETITION AND SPORT SINCE 1975 Dealer inquiriesCatalog 50 invited .-BLUE RIDGE MODELSE. BOX 429SKYLAND N C28776 SILICONE TUBING BMALLIOBZ 411 8500 10sa taol NED002 411 $400agee ate eel LACeR 20 dl 0600 01 za ate eel ua CAN POOTPAIO L4RRY DODGE AERO INC 110210 Manning Ave N lwater MN 55082 PAW DIESELS Englands Finest 048 35 RIC STD Send $100 list Eric Clutton 913 Cedar LanO Tullahoma Tenn 37388 162 Model Aviation Astrostar 95 Stratostar 95 Aero star 95 10612 Jordan Avenue Chatsworth CA 91311 8183414760 SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO-PAAKSKOKU-FAN 3-ojewS 36000IR BIBMA2000 20 poge CATALOG 5200 go SASSSCALE MODEL RESEARCH SaINIACIOn2324 rIOMOdReaB Won 0IOAOIRR4COMb Moo CA 03226 $ES TISERS INDEX AMA Membership55 Academy Aviation R&D34 Ace Radio Control154 Aerospace Composite Products153 Airtronics2 Altech MarketingCover 3 American Jr Aircraft Co152 Argus Specialist Publications35 Astro Flight32 Beer Can Bombers162 Bergeron Enterprises160 Bladder Grabber73 Blue Ridge Machinery & Tools152 Blue Ridge Models162 Dave Brown Products43 Bru Line Industries54 Byron Originals20 CajunRCProducts138 California Model Imports47 CaRa Products47 Carolina-Taffinder139 Johnnie Casburn Mfg54 Champion Model Products158 Circus Hobbies132-134 Cleveland Model Supply54 Eric Clutton162 Consumers Guide14 Coverite1 84 Cox Hobbies47 Craft-Air81 D&D Engineering131 DGA Designs146 Dana Aerospace157 Davis Diesel Development130 Detroit Expo47 Larry Dodge Aero Inc162 Dodgson Designs157 Dougs Hobby Shop140-145 Du-Bro Products Inc9 Dynathrust Props45 Experimental Aircraft Assn33 FAI Model Supply49 FHS Supply Inc4 Fiberglass Master163 Flyline Models155 1 total rudder l elevator measured widest point dont have dual rates particular system use gentle thumb during powered portion flight Another variable lies particular approach like Old-Timer-like RC assist flying Some prefer using two head gaskets engine conjunction 5% nitro fuel 8-3 prop long low-powered engine run Others like use Foam Scale Models152 Fourmost Products43 Fox Mfg45 Funn Fly 86127 Futaba19 GM Precision Products76 Gator RC Products40 Geometron Co146 Carl Goldberg Models75 Gorham Model Products11156 Great Planes Model Mfg Co147 Harry B Higley & Sons163 Historic Aviation13 Hobby Barn128-1 29 Hobby Horn49 Hobby Lobby International160 Hobby Woods32 Holleys Silent Flight130 Hoyer Hobbies162 Ikon Northwest Co161 Indy RC Sales Inc148-1 50 Interwood Co163 Jacks Models158 Jomar139 JTec37 K&BMfg131 K&S Engineering160 K&W Enterprises162 Kustom Kraftsmanship135 Leisure Electronics23 Lone Star Models41 McDaniel RC Service37 MACS Products152 M&W Models161 Master Kit161 Messers Quality Model Prod155 Micro Mark147 Micro Model Engineering131 Midwest Products156 Model Magic Products41 Model Rectifier CorpCover 2 Sid Morgan Plans158 Morley USA157 30% nitro 6-3 prop get way up hurry Which choose course will af fect desirable amount control throw Covering decorating prototype Jr Clipper 35% covered Mono Kote would have lighter covered Japanese tissue clear dope would viable choice larger radio equipment used wife violently allergic dope fumes usually choose heat-shrink covering material avoid hayMutchlers Hobbies136-1 37 NEPRO154157 Northeast Screen Graphics155 North Products153 Off Ground Models161 PAC Model Supply45 PK Products43 Pacer Technology153 Lewis Pancost139 Bob Parkinson Flying Models40 Penn Valley Hobby Center160 Pica Products15 Polks Hobby6-7 Progress Mfg Co151 Pro-Tune Corp49 Radio South154 Repla-Tech International152 Robbe Modellsport21 Roush Mfg54 SR Batteries49 SachsbyTG139 Scale Model Research162 Shamrock Competition Imports131 Sheldons Hobby Shop22 Sig Mfg Co514 Standale Aircraft152 Superior Aircraft Materials37 Swanson Associates160 T&D Research Associates138 Tatone Products Co33 Tidewater Hobby Enterprises45 Top Flite Models Inc34 Tower Hobbies159 VLProducts22 Victor Engineering40 WE Technical Services8 Williams Brothers32 Wilshire Model Center34 Windsor Propeller Co138147 Wing Mfg Co14 World EnginesCover 4 Zenith Aviation31 Nick Ziroli Models158 ing dope outdoors decoration outlines original kit model shown plans placing covered sections over plansone can trace decoration outlines through transparent covering pencil designed use Mylar overhead projection plates Dixon Vis-aid 38 school supply firms carry equivalents An adjustable French curve rubber-covered wire things sold drafting supply sections useful developing July1986 163 ZA 7 ~1 -1- youngster will easily , build consistently obtain sustained soarBing flight reduced scale competi tion glider Quality kit includes contest balsa tor two gliders catapult educational flight con struction manuals $495 ppd MioNAL lNN~ATl\tE PRODUCTS FOR NEW CATALOG HARRY B HIGLEY & SONS INC P o Box 532 GLENWOOD ILL 60425 FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flite Jemco Nosen Pilot Stafford Radials Behrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please include names models interested parts call between 9AM 0 PM EDT information C0D ordering hope hear youl F BERGLASS 7031890-6017 Dept MA ft fox 530 Goodoiew VA 24095 No 517 Fake Ford$575 RO Sportster reminiscent Ford Trimotor 3-1AA engines 3 RO channels Wingspan 50 Two plan sheets No 518 Project P-i 3$325 FF Scale German WW Ii flying wing has twin rubber motors spans 26 No 519 Gee Bee R-1$475 CL Profile sport flier 25 engines spans 361/4 No 520 FlIght Assistant$1150 Flight box wheels helps Power-plane modelers Two sheets No 521 Comet Jr Clipper Plus 35$650 RC Old-Timer sportster /2A two RO channels Wingspan 48% No 193Stalette CL Stunt model McDonald winner 1978 1980 1982 FAI World Champs $ 375 Ne 239Bk. Eats AC Ken Willards fonnation plane 4-channel 10-power$ 375 Na 262Crashmastbe CL Crash-proof trainer two sizesl 5-30- 3540-power$ 125 No302Eel F1S ACSarpolus O4gdactedfaospnrtflierfnr2-chanIiel Balsa wings tail fuse structare$ 275 Ne 3101930 Fleet SIphon AC Sport Scale 35-40 4-channel Wingspan 56 scale Two sheets$ 625 No 314Deake B AC Ken Willards flying hout f 3-channel 1 5pnwer Fly nod removable gear$ 375 No 326Tayter Cob RC Don SwI ls Schoulyard-Scale f 049s 2-3 channel Spans 50 in$ 350 Ne 332Zephyr RC Small 2-channel glider hood-launch tow thermal singe snaring$ 200 Na 388Laser 200 RC Spoil Scale replica championship Aerohatic flier Uses 40 power 4-5 channel Two sheets$1075 Ne 414ElecIuIc Spauk AC electric-powerod too flier 05 motor 3-channel AC scaled up 1939 rubber-power favorite$ 850 No 422Sceoter AC Two-Meter Sailplane has won Nats event 19821983 plus other contests$ 550 No430keatulde AC Zippy little spnrtslerfnr 10-15 power nod 3-channel RC$ 400 Na 433WaIte Up AC Electric-powered glider 2-3 channels 035 motor spans 52 in$ 450 Ne 438Ceuber FF Embryo Eodurance rebber-power fun ship has big-model characteristics$ 200 No 440Cavahr AC Old-Timer-like sew design has huge wing fur slow easy flights 35 pawer 3 channels Two shoots$1 725 No 444Ftrebelt AC pusher canard sporfipattern uses 40 pasher engine 4-channel Has swept-forward teem wings$ 650 Ne 447VA Else Auseulca AC Old-Timer %A Texaco model 049 glow 2-channels$ 650 Ne 452Ru Bee 2 AC Onnrter-scale spans 71 uses 90 power Four sheets$1600 No 454Sweet P-30 FF Neat stick-uod-tissue Outdoor Aubher P30-class model isa contest-winner$ 200 No 457Spectra AC Electric-power 05-size motor uses 3 different wings sport snaring aerobatics$ 700 Na 4684-40 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$ 650 Ne 463Ptatyhelmhotheu VI AC %A Pylon racer uses lots ito ply built-up structure fur strength lightness$ 475 Na 465SIen Moot AC Fun-fly sportstor 40-size engines spans 52 Lightweight stractore$ 700 No 468Smutber CL Slanter 29135 power Design based hybrid SmeethiolNotiler$ 675 Ne 470Streker AC Mid-wing spnrtster uses 40145 four-stroke engine spans 50% tail-dragger$ 650 Ne 478Buttercup AC Cute ellis spul-tuter uses micro 2-ch AC poise-rudder Spons 27 tsr 020-035 power$ 300 No 479Fear-Stroke Reenter AC SportlAerubutics ship has 19200 styling uses 90 4-stroke engina spons 85 2 sheets61100 Na 482BeideaAger AC SporffAerohutic model looks like Golden Ago spnrtster 60 engines spans 62 in$ 750 Na 483CBS Hawk Ultratigllt FF Outdoor Gas Scale plane uses CO-2 power spans 29 in$ 300 Ne 487Cap 21 AC Scale Aerehutic plana 40-size engine spons 62 Two sheets$1000 No 488MS-7 FF Jumbo Anbher Scale 1920-era Thomas Morse Scout biptuon spans 37 in$ 500 Ne 490Weekender AC Low-wing sport flier 20-size 4-stroke engine spans 47% in$ 575 No 485FW190 AC Hued-launched all-balsa scalelike sportster 1 0-1 5 engines aod hen AC channels Spans 39 in$ 425 No486P47 Thuludeekeit AC Other halt Ongfight Don has similar characteristics FW-1 90$ 425 Ne 457Meekatfee Pisces PF odour ruhher cabin model ideal beginners Spoon 20% in$ 200 Ne 4994-50 AC Dec Mathews greal spnrt flier 60-size four-stroker engine spans 70 iwo sheets$1275 Ne 500Fekker DVU AC Sport scale model WW moongiune uses 90 tour-stroke engine spans 83% Two sheets$1600 Nm 501Eledecker CL Sport scale model early WW muongiane %A power spans 23ih in$ 200 Ne 502RI Wink vagabond FF Sport flier down-sized 02-powered version 1940s cabin plane Spans 33% in$ 225 No 503Dozzbat AC Singe-snarer spans 60 uses 2 AC channels$ 750 No 504Turbo Learn B FF gabber-powered scale model spoos 19% in$150 Na 585P35 Llgbtutiq CL Spout Scala tighter spons 65% weighs 10th uses twin 35s Two sheets$1175 Ne 506Playniate AC Sport flier tor 3 AC channelo 1 5-25 engines spans 50 in$ 650 No 507ltummlekId FF Hot class MB Gas competition plane won 85 Nuts$ 750 No 5086-250 CL Prof lie scale WW Ii bomber twin %A engines spons 30% in$ 400 No 509Beacon 18 FF Hued-Lunecked Glider features curved 18-in wing OT$150 Ne 510Stemper FF Hued-Launched Glider has angular 18-in wing OT$ 150 No 511FIS CL %A profile scale tighter spans 17 has tricycle luoding gear$ 200 No 512Extra 230 AC Giant Scale acrobatic plane spuos 8 ft uses Ouodra engine Two plan sheets$1650 No 513Black Beauty AC Singe-snaring racer has teem wing 3-ch AC spans 114 in$ 750 Ne 514Neely T AC Spurtater %A 2-3 channel AC spout 52in has adjustable flaps$ 475 No 515Westlalel WI*twtod AC Sport Scale WW twin-engine British fighter 10-size engines spans 55 Two sheets61150 No 516Envoy CL Stuoter 40146 power spuos 58 in$ 675 1 ii as i 0 - c-J 0 CNJ 0 0 -0 4 ZO 0 OCO 0 -E - CO lo 0-- 0 V 0 0 flb COG 0 00 - 15 0 0 CO -a 00 CO 0 CO 0 atd 0 CO IDO CO 0 00 CO 0 00 en at mc NAME fl en 00 0c N _ 0STATE U Circle numbers plans wish order 193 332 440 463 483 499 506 513 239 386 444 465 487 500 507 514 262 414 447 468 488 501 508 515 302 422 452 470 490 502 509 516 310 430 454 478 495 503 510 517 314 433 457 479 496 504 511 518 326 438 460 482 497 505 512 519 520521 Plan price includes first class postage US deOvery Air Mail over 300 miles orders outside US please add $250 Air Mall $125 surtace mail planl Moke Check money order payable US lands Model Aviation AMA 1810 Samuel Morse Dr Rostos VA 22090 Please allow 3 6 weeks delivery Please print carefully Enclosed $ ____________________________________ STREET CITY ZIP steady Smooth curves can carefully draw outlines however bottom surfaces can traced using upper outline guide Sig Stripe Rite tape 3A2-in -in widths will flex well around curves can widened afterward electricians tape edges should sealed some sort clear material prefer Sig Sky brite applied along seam small brush prevents seepage color coats Use paper masking tape cover areas painted lightly score MonoKote * 400 steel wool just enough remove some gloss Glean surfaces painted acetone avoid touching fingers afterward Poly-U Super Poxy Skybrite can sprayed onto MonoKote will adhere well used Poly-U particular model Alter shaking spray can light mist coat applied can 12 away surface made no effort completely apply heavy layer paint light coating produced semi transparent color real beauty paper masking tape electricians tape Stripe Rite removed fresh line Stripe Rite con trasting color applied trim engine compartment removable cowl front primed Skybrite primer sprayed separately Flying problem models type inadequate wind penetration Some models just wont turn down wind must kept upwind times Others will climb nearly straight up moving forward Still others will handle windy conditions well will glide like lead sleds calm air conclude such variables wing loading CG placement need selected according wind velocity other words often fly windy weather may better ballast model wind some glide duration will lost CG point shown plan windy conditions move rearward ht winds some reason Jr Clipper 35% behaves better wind other general type Ive flown Perhaps wide fuselage profile helps . tapered flat-bottom airfoil. longer-than-average tail moment Whatever reason model penetrates well will turn upwind downwind ease will float lightest lift wouldnt mind taldng credit honest ly feel genius Carl Goldberg Hand launches model wellcontrolled little tendency veer off side drop like stone Jr Clipper 35% tends climb its wing rather prop gives straight out up climb rather corkscrew Slow-speed characteristics excellent Gentle well-placed landings easy wind just vety nice little airplane 164 Model Aviation
Edition: Model Aviation - 1986/07
Page Numbers: 88, 89, 90, 162, 163, 164
THE PROTOTYPE MODEL Com et Models kit called Jr Clipper 36-in wingspan rubber power model presented enlarged 35% over original structures have redesigned use engines great fun flier Although size Texaco model eligible Society Antique Modelers SAM com petitions due its rubber-power origins original kit introduced 1938 series directed lacked funds buy engines attracted larger gas-type models featured some sort device produce hum rubber motor un wound Usually ratchet attached propeller vibrated strip metal resulting sound much like todays kids produce sticking playing cards spokes bicycle Several manufacturers produced kits such devices including Scientific Models Flea Berkeley Buccaneer 30 Cleveland Models Polish Valor Comet also similar rubber-powered Zipper Jr Clipper remained com panys line well 1 950sseemingto indicate popular Placing Jr Clipper drawings along side classic 6-ft Clipper Mk shows rubber-powered version almost exact half-size reduction big Although Jr Clipper plans 88 Model Aviation Top No matter size see aii Ciippers beautiful behold particuiariy flight classic gem almost irresistible gently cruises across sky Above Carl Goldberg reduced immortal 8-ft Clipper Mk gas desIgn 38-in rubber-powered sport model Now Doc has enlarged slightly contemporary /aA radio-assist desIgn list designer genius Carl Goldberg obviously present Structures Jr Clipper much simpler Clipper Mk simplifications retained version flat-bottom wing airfoil spars outer surfaces flat stabilizer fast work compared big gas-powered version Nonethe less enlarged Jr Clipper has aesthetic beauty big its lovely elliptical planform lines Jr Clipper 35% possesses better average wind penetration models size type thermals light lift may just model anyone wanted small-size Clipper put off need cut out ribs etc Construction Wcod sizes close minimum adequate structural integrity No doubt fuselage could have built i-in-sq balsa specified /16 weighs very little especially corners sanded round larger size also provides rigidity aid boxing step laminated outlines stabilizer/ elevator fin/rudder made flexible balsa strips have mois tened ammonia diluted water form inside outline shape first cut some rigid material such foam board trace plan shapes onto form material aid carbon paper moistened balsa strips coated aliphatic resin such Sig Bond pulled over form held masking tape Allow overnight drying place oven set 1250F few hours cyanoacrylate glue CyA can used nearly construction steps will greatly speed up completion project keeping weight minimum Use 5-min epoxy join wing halves install firewall Wing Cut trailing edge TE sections very lightweight balsa Trace plan shapes onto balsa carbon paper Laminate leading edge LE directly over drawing hold pins placed July1986 89 Loft Elliptical shapes areformed soaking balsa strips ammonlawaterand laminating around foam board outlines Aiiowthe glue dry ovemlghtto make sure retain shape Right simple-to- fabricate elevator horn filler piece make neat efficient system Notethe verythin hinges possiblewith Mylarsheet material Thesearealmostessential hingethethin atripthat makes upthetail Left Simple removable cowl permltseasyenglne accessand main tenance retaining original rubber-powered nose outline kit dummy balsa hardwood engine cylinder combined clickerto makeengine-like noise Above Elevator rudder hinged small sections Rocket City Mylar hinge material Lightweight connector system described text Ultra-mimpie servo mounting aone witn tape inagea --r enas uoo wire enas Baisa stick pushrods work well ample room servos 225 mAh battery outside strips easiest method making ribs first make Xerox copy plan cut out rib pattern copy scissors affix pattern appropriate-size sheet C-grain balsa rubber cement Cut ribs pairs carefully remove paper cement sand wing constructed completely flat building board top spars pulled down tips no tapering spars required Add shear webs front spars wing still building board prevent warping Using pre-tilted center section ribs after both wing halves have built block up tip dihedral height block-sand proper bevel aid square edge building board two halves joined 3-mm epoxy clamp center ribs together clothespins Add center section strips Yn ply dihedral gusset feel uncomfortable model did have dihedral gusset has spun out damage occurring Sand LE TE contour shown plans either before after putting dihedral covering would almost sinful cover such beautiful structure opaque material No doubt Jr Clipper wouid make iightfui rubber-powered model engIne RC gearwere ieftoutand asizabiebraid rubber big prop substituted wing shrink both sides panel equally go along helps prevent warps Tail surfaces Use lamination tech nique make outlines place outlines over drawing add internal structures Cut sections apart trial-fit hinges horns prefer cover sections before installing hinges elevator tiller required performance reasons using makes model look nice fabricated music wire K&S brass strip silver-soldered together StaBrite solder works well electric soldering gun Obviously external horn could used wire joiner connect two elevator halves used section Radio South Mylarfiber-coated hinge material CyA-glued slots anchored small sections toothpick Other choices would include Ace RC nylon hinge material Mono Kote hinges Fuselage Construction classic twosides-built-one-over-the-other using scraps masking tape prevent sticking sides popped apart table knife assembled box Cut drill firewall 3-48 bolts nuepl62 Sheliy Lorance shows off dads istest prideand joy enlargedCometJr Clipper 90 Model Aviation simple m Irdeveloping what appearsto complex color scheme ppers no matter what size aiways iook best done yeiiovi something Balsa 760 sq Wing Area Engine 90-160 Glass Cowl Super Hinges Rolled Plans 72 Wing Span 56 Fuselage Assembly Manual Easy Construction Pre-Formed Aluminum Landing Gear HOYER HOBBIES Apply tb first coat polyurethane varnish let dry thoroughly Finishsand thepolyurethane 320-grit paper apply second coat box dry install hardware covers ensure small hinge screws will hold squirt some Zap-A-Gap screw holes before assembly Cut slit pipe insulation material airplane support slots cover Cut Zap-glue foam rubber transmitter fuel can cavities Mount handle axle wheels ensure fit properly may have trim exces sive polyurethane mounting holes first time use Flight Assis tant flying field prepared endure jealous remarks fellow modelers will find however after first barrage snide remarks referring laziness lack strength carry own flight box wherever go friends will start asking such questions did get plans long did take build about building Jr Clipper/Mathews Continued page 90 blind nuts mount engine screws Fabricate Jigs 1 2 directly over drawing Part FR 1/16 ply should drilled accept already-bent landing gear unit Place left frame over plan weight down Install two jigs appropriate slots checking absolute squareness both planes carpenters square 900 triangle should used check squareness step assembly CyA-glue jigs left side place right side over Again check alignment satisfied CyA-glue right side jigs Pull tail posts together hold clothespins again checking square ness CyA-glue together Cut cross braces pairs using top view guide Install working front back technique will produce c5~f EASTERS PA 7x 3 7x 35 8x 4 $400 per blade $800 per pair PlOP HUB ASSEMBLY U 110 049 051 engines electric motor equivalent WeightS grams $1500 PROP BLADES FOR HUB 8 110 lable 6x 3 $400 per blade $800 per pair PROP HUB ASSEMBLY 8 111 0 engines electric motor equivalent 20 grams$2000 PlOP BLADES FOR HUB 8 111 lable n 9 x 4 10 x 4 lix 4 $500 per blade $1000 per pair Send SSAE tor catalog sheet complete line AlAN pIRPORBANCE 0*50 LAUNdIEO GLINERS PROM LIGMTREICMT ALUMINUM BEVERAGE CANS TWO PALL SIZE PATTERNS YOUR COOICE ILLASTRATBO PABBICATIAN ANN PLYING ISSTNACTIONS NRO AMOITIONAL PATTERNS $125 EACO OR SIA PACE PICK NB BCE-i ornp ~7QB well-aligned fuselage box time Remove box building board install firewall aid top view guide landing gear must now installed followed Bulkheads C D Finish fuselage adding front sheeting nose blocks sand unit nice contour Radio installation prototype model came out slightly under 18 oz 100 mAh battery indicating use micro servos must servos mounted Lite Ply rails servo tape wood first hardened application CyA tape will stick pulling lcose wcod grain plan details simple lightweight pushrod system Unfortunately available flex-rods light enough use type model elevator horn buried needs very careful set servo end Z-bend neutral before placing permanently Some adjustment course available positioning servo placed 225 mAh battery against firewall Royal Vanguard receiver wrapped foam immediately behind servos almost directly under center gravity CG No ballast required setup Control surface throws model such wide speed differential power poweroff mostly matter pilot skill Should have dual-rate system elevator rudder use mini mal throws power switch much higher throws glide set up QUALITY FREE FLIGHT KITS AND SUPPLIES FOR COMPETITION AND SPORT SINCE 1975 Dealer inquiriesCatalog 50 invited .-BLUE RIDGE MODELSE. BOX 429SKYLAND N C28776 SILICONE TUBING BMALLIOBZ 411 8500 10sa taol NED002 411 $400agee ate eel LACeR 20 dl 0600 01 za ate eel ua CAN POOTPAIO L4RRY DODGE AERO INC 110210 Manning Ave N lwater MN 55082 PAW DIESELS Englands Finest 048 35 RIC STD Send $100 list Eric Clutton 913 Cedar LanO Tullahoma Tenn 37388 162 Model Aviation Astrostar 95 Stratostar 95 Aero star 95 10612 Jordan Avenue Chatsworth CA 91311 8183414760 SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO-PAAKSKOKU-FAN 3-ojewS 36000IR BIBMA2000 20 poge CATALOG 5200 go SASSSCALE MODEL RESEARCH SaINIACIOn2324 rIOMOdReaB Won 0IOAOIRR4COMb Moo CA 03226 $ES TISERS INDEX AMA Membership55 Academy Aviation R&D34 Ace Radio Control154 Aerospace Composite Products153 Airtronics2 Altech MarketingCover 3 American Jr Aircraft Co152 Argus Specialist Publications35 Astro Flight32 Beer Can Bombers162 Bergeron Enterprises160 Bladder Grabber73 Blue Ridge Machinery & Tools152 Blue Ridge Models162 Dave Brown Products43 Bru Line Industries54 Byron Originals20 CajunRCProducts138 California Model Imports47 CaRa Products47 Carolina-Taffinder139 Johnnie Casburn Mfg54 Champion Model Products158 Circus Hobbies132-134 Cleveland Model Supply54 Eric Clutton162 Consumers Guide14 Coverite1 84 Cox Hobbies47 Craft-Air81 D&D Engineering131 DGA Designs146 Dana Aerospace157 Davis Diesel Development130 Detroit Expo47 Larry Dodge Aero Inc162 Dodgson Designs157 Dougs Hobby Shop140-145 Du-Bro Products Inc9 Dynathrust Props45 Experimental Aircraft Assn33 FAI Model Supply49 FHS Supply Inc4 Fiberglass Master163 Flyline Models155 1 total rudder l elevator measured widest point dont have dual rates particular system use gentle thumb during powered portion flight Another variable lies particular approach like Old-Timer-like RC assist flying Some prefer using two head gaskets engine conjunction 5% nitro fuel 8-3 prop long low-powered engine run Others like use Foam Scale Models152 Fourmost Products43 Fox Mfg45 Funn Fly 86127 Futaba19 GM Precision Products76 Gator RC Products40 Geometron Co146 Carl Goldberg Models75 Gorham Model Products11156 Great Planes Model Mfg Co147 Harry B Higley & Sons163 Historic Aviation13 Hobby Barn128-1 29 Hobby Horn49 Hobby Lobby International160 Hobby Woods32 Holleys Silent Flight130 Hoyer Hobbies162 Ikon Northwest Co161 Indy RC Sales Inc148-1 50 Interwood Co163 Jacks Models158 Jomar139 JTec37 K&BMfg131 K&S Engineering160 K&W Enterprises162 Kustom Kraftsmanship135 Leisure Electronics23 Lone Star Models41 McDaniel RC Service37 MACS Products152 M&W Models161 Master Kit161 Messers Quality Model Prod155 Micro Mark147 Micro Model Engineering131 Midwest Products156 Model Magic Products41 Model Rectifier CorpCover 2 Sid Morgan Plans158 Morley USA157 30% nitro 6-3 prop get way up hurry Which choose course will af fect desirable amount control throw Covering decorating prototype Jr Clipper 35% covered Mono Kote would have lighter covered Japanese tissue clear dope would viable choice larger radio equipment used wife violently allergic dope fumes usually choose heat-shrink covering material avoid hayMutchlers Hobbies136-1 37 NEPRO154157 Northeast Screen Graphics155 North Products153 Off Ground Models161 PAC Model Supply45 PK Products43 Pacer Technology153 Lewis Pancost139 Bob Parkinson Flying Models40 Penn Valley Hobby Center160 Pica Products15 Polks Hobby6-7 Progress Mfg Co151 Pro-Tune Corp49 Radio South154 Repla-Tech International152 Robbe Modellsport21 Roush Mfg54 SR Batteries49 SachsbyTG139 Scale Model Research162 Shamrock Competition Imports131 Sheldons Hobby Shop22 Sig Mfg Co514 Standale Aircraft152 Superior Aircraft Materials37 Swanson Associates160 T&D Research Associates138 Tatone Products Co33 Tidewater Hobby Enterprises45 Top Flite Models Inc34 Tower Hobbies159 VLProducts22 Victor Engineering40 WE Technical Services8 Williams Brothers32 Wilshire Model Center34 Windsor Propeller Co138147 Wing Mfg Co14 World EnginesCover 4 Zenith Aviation31 Nick Ziroli Models158 ing dope outdoors decoration outlines original kit model shown plans placing covered sections over plansone can trace decoration outlines through transparent covering pencil designed use Mylar overhead projection plates Dixon Vis-aid 38 school supply firms carry equivalents An adjustable French curve rubber-covered wire things sold drafting supply sections useful developing July1986 163 ZA 7 ~1 -1- youngster will easily , build consistently obtain sustained soarBing flight reduced scale competi tion glider Quality kit includes contest balsa tor two gliders catapult educational flight con struction manuals $495 ppd MioNAL lNN~ATl\tE PRODUCTS FOR NEW CATALOG HARRY B HIGLEY & SONS INC P o Box 532 GLENWOOD ILL 60425 FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flite Jemco Nosen Pilot Stafford Radials Behrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please include names models interested parts call between 9AM 0 PM EDT information C0D ordering hope hear youl F BERGLASS 7031890-6017 Dept MA ft fox 530 Goodoiew VA 24095 No 517 Fake Ford$575 RO Sportster reminiscent Ford Trimotor 3-1AA engines 3 RO channels Wingspan 50 Two plan sheets No 518 Project P-i 3$325 FF Scale German WW Ii flying wing has twin rubber motors spans 26 No 519 Gee Bee R-1$475 CL Profile sport flier 25 engines spans 361/4 No 520 FlIght Assistant$1150 Flight box wheels helps Power-plane modelers Two sheets No 521 Comet Jr Clipper Plus 35$650 RC Old-Timer sportster /2A two RO channels Wingspan 48% No 193Stalette CL Stunt model McDonald winner 1978 1980 1982 FAI World Champs $ 375 Ne 239Bk. Eats AC Ken Willards fonnation plane 4-channel 10-power$ 375 Na 262Crashmastbe CL Crash-proof trainer two sizesl 5-30- 3540-power$ 125 No302Eel F1S ACSarpolus O4gdactedfaospnrtflierfnr2-chanIiel Balsa wings tail fuse structare$ 275 Ne 3101930 Fleet SIphon AC Sport Scale 35-40 4-channel Wingspan 56 scale Two sheets$ 625 No 314Deake B AC Ken Willards flying hout f 3-channel 1 5pnwer Fly nod removable gear$ 375 No 326Tayter Cob RC Don SwI ls Schoulyard-Scale f 049s 2-3 channel Spans 50 in$ 350 Ne 332Zephyr RC Small 2-channel glider hood-launch tow thermal singe snaring$ 200 Na 388Laser 200 RC Spoil Scale replica championship Aerohatic flier Uses 40 power 4-5 channel Two sheets$1075 Ne 414ElecIuIc Spauk AC electric-powerod too flier 05 motor 3-channel AC scaled up 1939 rubber-power favorite$ 850 No 422Sceoter AC Two-Meter Sailplane has won Nats event 19821983 plus other contests$ 550 No430keatulde AC Zippy little spnrtslerfnr 10-15 power nod 3-channel RC$ 400 Na 433WaIte Up AC Electric-powered glider 2-3 channels 035 motor spans 52 in$ 450 Ne 438Ceuber FF Embryo Eodurance rebber-power fun ship has big-model characteristics$ 200 No 440Cavahr AC Old-Timer-like sew design has huge wing fur slow easy flights 35 pawer 3 channels Two shoots$1 725 No 444Ftrebelt AC pusher canard sporfipattern uses 40 pasher engine 4-channel Has swept-forward teem wings$ 650 Ne 447VA Else Auseulca AC Old-Timer %A Texaco model 049 glow 2-channels$ 650 Ne 452Ru Bee 2 AC Onnrter-scale spans 71 uses 90 power Four sheets$1600 No 454Sweet P-30 FF Neat stick-uod-tissue Outdoor Aubher P30-class model isa contest-winner$ 200 No 457Spectra AC Electric-power 05-size motor uses 3 different wings sport snaring aerobatics$ 700 Na 4684-40 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$ 650 Ne 463Ptatyhelmhotheu VI AC %A Pylon racer uses lots ito ply built-up structure fur strength lightness$ 475 Na 465SIen Moot AC Fun-fly sportstor 40-size engines spans 52 Lightweight stractore$ 700 No 468Smutber CL Slanter 29135 power Design based hybrid SmeethiolNotiler$ 675 Ne 470Streker AC Mid-wing spnrtster uses 40145 four-stroke engine spans 50% tail-dragger$ 650 Ne 478Buttercup AC Cute ellis spul-tuter uses micro 2-ch AC poise-rudder Spons 27 tsr 020-035 power$ 300 No 479Fear-Stroke Reenter AC SportlAerubutics ship has 19200 styling uses 90 4-stroke engina spons 85 2 sheets61100 Na 482BeideaAger AC SporffAerohutic model looks like Golden Ago spnrtster 60 engines spans 62 in$ 750 Na 483CBS Hawk Ultratigllt FF Outdoor Gas Scale plane uses CO-2 power spans 29 in$ 300 Ne 487Cap 21 AC Scale Aerehutic plana 40-size engine spons 62 Two sheets$1000 No 488MS-7 FF Jumbo Anbher Scale 1920-era Thomas Morse Scout biptuon spans 37 in$ 500 Ne 490Weekender AC Low-wing sport flier 20-size 4-stroke engine spans 47% in$ 575 No 485FW190 AC Hued-launched all-balsa scalelike sportster 1 0-1 5 engines aod hen AC channels Spans 39 in$ 425 No486P47 Thuludeekeit AC Other halt Ongfight Don has similar characteristics FW-1 90$ 425 Ne 457Meekatfee Pisces PF odour ruhher cabin model ideal beginners Spoon 20% in$ 200 Ne 4994-50 AC Dec Mathews greal spnrt flier 60-size four-stroker engine spans 70 iwo sheets$1275 Ne 500Fekker DVU AC Sport scale model WW moongiune uses 90 tour-stroke engine spans 83% Two sheets$1600 Nm 501Eledecker CL Sport scale model early WW muongiane %A power spans 23ih in$ 200 Ne 502RI Wink vagabond FF Sport flier down-sized 02-powered version 1940s cabin plane Spans 33% in$ 225 No 503Dozzbat AC Singe-snarer spans 60 uses 2 AC channels$ 750 No 504Turbo Learn B FF gabber-powered scale model spoos 19% in$150 Na 585P35 Llgbtutiq CL Spout Scala tighter spons 65% weighs 10th uses twin 35s Two sheets$1175 Ne 506Playniate AC Sport flier tor 3 AC channelo 1 5-25 engines spans 50 in$ 650 No 507ltummlekId FF Hot class MB Gas competition plane won 85 Nuts$ 750 No 5086-250 CL Prof lie scale WW Ii bomber twin %A engines spons 30% in$ 400 No 509Beacon 18 FF Hued-Lunecked Glider features curved 18-in wing OT$150 Ne 510Stemper FF Hued-Launched Glider has angular 18-in wing OT$ 150 No 511FIS CL %A profile scale tighter spans 17 has tricycle luoding gear$ 200 No 512Extra 230 AC Giant Scale acrobatic plane spuos 8 ft uses Ouodra engine Two plan sheets$1650 No 513Black Beauty AC Singe-snaring racer has teem wing 3-ch AC spans 114 in$ 750 Ne 514Neely T AC Spurtater %A 2-3 channel AC spout 52in has adjustable flaps$ 475 No 515Westlalel WI*twtod AC Sport Scale WW twin-engine British fighter 10-size engines spans 55 Two sheets61150 No 516Envoy CL Stuoter 40146 power spuos 58 in$ 675 1 ii as i 0 - c-J 0 CNJ 0 0 -0 4 ZO 0 OCO 0 -E - CO lo 0-- 0 V 0 0 flb COG 0 00 - 15 0 0 CO -a 00 CO 0 CO 0 atd 0 CO IDO CO 0 00 CO 0 00 en at mc NAME fl en 00 0c N _ 0STATE U Circle numbers plans wish order 193 332 440 463 483 499 506 513 239 386 444 465 487 500 507 514 262 414 447 468 488 501 508 515 302 422 452 470 490 502 509 516 310 430 454 478 495 503 510 517 314 433 457 479 496 504 511 518 326 438 460 482 497 505 512 519 520521 Plan price includes first class postage US deOvery Air Mail over 300 miles orders outside US please add $250 Air Mall $125 surtace mail planl Moke Check money order payable US lands Model Aviation AMA 1810 Samuel Morse Dr Rostos VA 22090 Please allow 3 6 weeks delivery Please print carefully Enclosed $ ____________________________________ STREET CITY ZIP steady Smooth curves can carefully draw outlines however bottom surfaces can traced using upper outline guide Sig Stripe Rite tape 3A2-in -in widths will flex well around curves can widened afterward electricians tape edges should sealed some sort clear material prefer Sig Sky brite applied along seam small brush prevents seepage color coats Use paper masking tape cover areas painted lightly score MonoKote * 400 steel wool just enough remove some gloss Glean surfaces painted acetone avoid touching fingers afterward Poly-U Super Poxy Skybrite can sprayed onto MonoKote will adhere well used Poly-U particular model Alter shaking spray can light mist coat applied can 12 away surface made no effort completely apply heavy layer paint light coating produced semi transparent color real beauty paper masking tape electricians tape Stripe Rite removed fresh line Stripe Rite con trasting color applied trim engine compartment removable cowl front primed Skybrite primer sprayed separately Flying problem models type inadequate wind penetration Some models just wont turn down wind must kept upwind times Others will climb nearly straight up moving forward Still others will handle windy conditions well will glide like lead sleds calm air conclude such variables wing loading CG placement need selected according wind velocity other words often fly windy weather may better ballast model wind some glide duration will lost CG point shown plan windy conditions move rearward ht winds some reason Jr Clipper 35% behaves better wind other general type Ive flown Perhaps wide fuselage profile helps . tapered flat-bottom airfoil. longer-than-average tail moment Whatever reason model penetrates well will turn upwind downwind ease will float lightest lift wouldnt mind taldng credit honest ly feel genius Carl Goldberg Hand launches model wellcontrolled little tendency veer off side drop like stone Jr Clipper 35% tends climb its wing rather prop gives straight out up climb rather corkscrew Slow-speed characteristics excellent Gentle well-placed landings easy wind just vety nice little airplane 164 Model Aviation
Edition: Model Aviation - 1986/07
Page Numbers: 88, 89, 90, 162, 163, 164
THE PROTOTYPE MODEL Com et Models kit called Jr Clipper 36-in wingspan rubber power model presented enlarged 35% over original structures have redesigned use engines great fun flier Although size Texaco model eligible Society Antique Modelers SAM com petitions due its rubber-power origins original kit introduced 1938 series directed lacked funds buy engines attracted larger gas-type models featured some sort device produce hum rubber motor un wound Usually ratchet attached propeller vibrated strip metal resulting sound much like todays kids produce sticking playing cards spokes bicycle Several manufacturers produced kits such devices including Scientific Models Flea Berkeley Buccaneer 30 Cleveland Models Polish Valor Comet also similar rubber-powered Zipper Jr Clipper remained com panys line well 1 950sseemingto indicate popular Placing Jr Clipper drawings along side classic 6-ft Clipper Mk shows rubber-powered version almost exact half-size reduction big Although Jr Clipper plans 88 Model Aviation Top No matter size see aii Ciippers beautiful behold particuiariy flight classic gem almost irresistible gently cruises across sky Above Carl Goldberg reduced immortal 8-ft Clipper Mk gas desIgn 38-in rubber-powered sport model Now Doc has enlarged slightly contemporary /aA radio-assist desIgn list designer genius Carl Goldberg obviously present Structures Jr Clipper much simpler Clipper Mk simplifications retained version flat-bottom wing airfoil spars outer surfaces flat stabilizer fast work compared big gas-powered version Nonethe less enlarged Jr Clipper has aesthetic beauty big its lovely elliptical planform lines Jr Clipper 35% possesses better average wind penetration models size type thermals light lift may just model anyone wanted small-size Clipper put off need cut out ribs etc Construction Wcod sizes close minimum adequate structural integrity No doubt fuselage could have built i-in-sq balsa specified /16 weighs very little especially corners sanded round larger size also provides rigidity aid boxing step laminated outlines stabilizer/ elevator fin/rudder made flexible balsa strips have mois tened ammonia diluted water form inside outline shape first cut some rigid material such foam board trace plan shapes onto form material aid carbon paper moistened balsa strips coated aliphatic resin such Sig Bond pulled over form held masking tape Allow overnight drying place oven set 1250F few hours cyanoacrylate glue CyA can used nearly construction steps will greatly speed up completion project keeping weight minimum Use 5-min epoxy join wing halves install firewall Wing Cut trailing edge TE sections very lightweight balsa Trace plan shapes onto balsa carbon paper Laminate leading edge LE directly over drawing hold pins placed July1986 89 Loft Elliptical shapes areformed soaking balsa strips ammonlawaterand laminating around foam board outlines Aiiowthe glue dry ovemlghtto make sure retain shape Right simple-to- fabricate elevator horn filler piece make neat efficient system Notethe verythin hinges possiblewith Mylarsheet material Thesearealmostessential hingethethin atripthat makes upthetail Left Simple removable cowl permltseasyenglne accessand main tenance retaining original rubber-powered nose outline kit dummy balsa hardwood engine cylinder combined clickerto makeengine-like noise Above Elevator rudder hinged small sections Rocket City Mylar hinge material Lightweight connector system described text Ultra-mimpie servo mounting aone witn tape inagea --r enas uoo wire enas Baisa stick pushrods work well ample room servos 225 mAh battery outside strips easiest method making ribs first make Xerox copy plan cut out rib pattern copy scissors affix pattern appropriate-size sheet C-grain balsa rubber cement Cut ribs pairs carefully remove paper cement sand wing constructed completely flat building board top spars pulled down tips no tapering spars required Add shear webs front spars wing still building board prevent warping Using pre-tilted center section ribs after both wing halves have built block up tip dihedral height block-sand proper bevel aid square edge building board two halves joined 3-mm epoxy clamp center ribs together clothespins Add center section strips Yn ply dihedral gusset feel uncomfortable model did have dihedral gusset has spun out damage occurring Sand LE TE contour shown plans either before after putting dihedral covering would almost sinful cover such beautiful structure opaque material No doubt Jr Clipper wouid make iightfui rubber-powered model engIne RC gearwere ieftoutand asizabiebraid rubber big prop substituted wing shrink both sides panel equally go along helps prevent warps Tail surfaces Use lamination tech nique make outlines place outlines over drawing add internal structures Cut sections apart trial-fit hinges horns prefer cover sections before installing hinges elevator tiller required performance reasons using makes model look nice fabricated music wire K&S brass strip silver-soldered together StaBrite solder works well electric soldering gun Obviously external horn could used wire joiner connect two elevator halves used section Radio South Mylarfiber-coated hinge material CyA-glued slots anchored small sections toothpick Other choices would include Ace RC nylon hinge material Mono Kote hinges Fuselage Construction classic twosides-built-one-over-the-other using scraps masking tape prevent sticking sides popped apart table knife assembled box Cut drill firewall 3-48 bolts nuepl62 Sheliy Lorance shows off dads istest prideand joy enlargedCometJr Clipper 90 Model Aviation simple m Irdeveloping what appearsto complex color scheme ppers no matter what size aiways iook best done yeiiovi something Balsa 760 sq Wing Area Engine 90-160 Glass Cowl Super Hinges Rolled Plans 72 Wing Span 56 Fuselage Assembly Manual Easy Construction Pre-Formed Aluminum Landing Gear HOYER HOBBIES Apply tb first coat polyurethane varnish let dry thoroughly Finishsand thepolyurethane 320-grit paper apply second coat box dry install hardware covers ensure small hinge screws will hold squirt some Zap-A-Gap screw holes before assembly Cut slit pipe insulation material airplane support slots cover Cut Zap-glue foam rubber transmitter fuel can cavities Mount handle axle wheels ensure fit properly may have trim exces sive polyurethane mounting holes first time use Flight Assis tant flying field prepared endure jealous remarks fellow modelers will find however after first barrage snide remarks referring laziness lack strength carry own flight box wherever go friends will start asking such questions did get plans long did take build about building Jr Clipper/Mathews Continued page 90 blind nuts mount engine screws Fabricate Jigs 1 2 directly over drawing Part FR 1/16 ply should drilled accept already-bent landing gear unit Place left frame over plan weight down Install two jigs appropriate slots checking absolute squareness both planes carpenters square 900 triangle should used check squareness step assembly CyA-glue jigs left side place right side over Again check alignment satisfied CyA-glue right side jigs Pull tail posts together hold clothespins again checking square ness CyA-glue together Cut cross braces pairs using top view guide Install working front back technique will produce c5~f EASTERS PA 7x 3 7x 35 8x 4 $400 per blade $800 per pair PlOP HUB ASSEMBLY U 110 049 051 engines electric motor equivalent WeightS grams $1500 PROP BLADES FOR HUB 8 110 lable 6x 3 $400 per blade $800 per pair PROP HUB ASSEMBLY 8 111 0 engines electric motor equivalent 20 grams$2000 PlOP BLADES FOR HUB 8 111 lable n 9 x 4 10 x 4 lix 4 $500 per blade $1000 per pair Send SSAE tor catalog sheet complete line AlAN pIRPORBANCE 0*50 LAUNdIEO GLINERS PROM LIGMTREICMT ALUMINUM BEVERAGE CANS TWO PALL SIZE PATTERNS YOUR COOICE ILLASTRATBO PABBICATIAN ANN PLYING ISSTNACTIONS NRO AMOITIONAL PATTERNS $125 EACO OR SIA PACE PICK NB BCE-i ornp ~7QB well-aligned fuselage box time Remove box building board install firewall aid top view guide landing gear must now installed followed Bulkheads C D Finish fuselage adding front sheeting nose blocks sand unit nice contour Radio installation prototype model came out slightly under 18 oz 100 mAh battery indicating use micro servos must servos mounted Lite Ply rails servo tape wood first hardened application CyA tape will stick pulling lcose wcod grain plan details simple lightweight pushrod system Unfortunately available flex-rods light enough use type model elevator horn buried needs very careful set servo end Z-bend neutral before placing permanently Some adjustment course available positioning servo placed 225 mAh battery against firewall Royal Vanguard receiver wrapped foam immediately behind servos almost directly under center gravity CG No ballast required setup Control surface throws model such wide speed differential power poweroff mostly matter pilot skill Should have dual-rate system elevator rudder use mini mal throws power switch much higher throws glide set up QUALITY FREE FLIGHT KITS AND SUPPLIES FOR COMPETITION AND SPORT SINCE 1975 Dealer inquiriesCatalog 50 invited .-BLUE RIDGE MODELSE. BOX 429SKYLAND N C28776 SILICONE TUBING BMALLIOBZ 411 8500 10sa taol NED002 411 $400agee ate eel LACeR 20 dl 0600 01 za ate eel ua CAN POOTPAIO L4RRY DODGE AERO INC 110210 Manning Ave N lwater MN 55082 PAW DIESELS Englands Finest 048 35 RIC STD Send $100 list Eric Clutton 913 Cedar LanO Tullahoma Tenn 37388 162 Model Aviation Astrostar 95 Stratostar 95 Aero star 95 10612 Jordan Avenue Chatsworth CA 91311 8183414760 SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO-PAAKSKOKU-FAN 3-ojewS 36000IR BIBMA2000 20 poge CATALOG 5200 go SASSSCALE MODEL RESEARCH SaINIACIOn2324 rIOMOdReaB Won 0IOAOIRR4COMb Moo CA 03226 $ES TISERS INDEX AMA Membership55 Academy Aviation R&D34 Ace Radio Control154 Aerospace Composite Products153 Airtronics2 Altech MarketingCover 3 American Jr Aircraft Co152 Argus Specialist Publications35 Astro Flight32 Beer Can Bombers162 Bergeron Enterprises160 Bladder Grabber73 Blue Ridge Machinery & Tools152 Blue Ridge Models162 Dave Brown Products43 Bru Line Industries54 Byron Originals20 CajunRCProducts138 California Model Imports47 CaRa Products47 Carolina-Taffinder139 Johnnie Casburn Mfg54 Champion Model Products158 Circus Hobbies132-134 Cleveland Model Supply54 Eric Clutton162 Consumers Guide14 Coverite1 84 Cox Hobbies47 Craft-Air81 D&D Engineering131 DGA Designs146 Dana Aerospace157 Davis Diesel Development130 Detroit Expo47 Larry Dodge Aero Inc162 Dodgson Designs157 Dougs Hobby Shop140-145 Du-Bro Products Inc9 Dynathrust Props45 Experimental Aircraft Assn33 FAI Model Supply49 FHS Supply Inc4 Fiberglass Master163 Flyline Models155 1 total rudder l elevator measured widest point dont have dual rates particular system use gentle thumb during powered portion flight Another variable lies particular approach like Old-Timer-like RC assist flying Some prefer using two head gaskets engine conjunction 5% nitro fuel 8-3 prop long low-powered engine run Others like use Foam Scale Models152 Fourmost Products43 Fox Mfg45 Funn Fly 86127 Futaba19 GM Precision Products76 Gator RC Products40 Geometron Co146 Carl Goldberg Models75 Gorham Model Products11156 Great Planes Model Mfg Co147 Harry B Higley & Sons163 Historic Aviation13 Hobby Barn128-1 29 Hobby Horn49 Hobby Lobby International160 Hobby Woods32 Holleys Silent Flight130 Hoyer Hobbies162 Ikon Northwest Co161 Indy RC Sales Inc148-1 50 Interwood Co163 Jacks Models158 Jomar139 JTec37 K&BMfg131 K&S Engineering160 K&W Enterprises162 Kustom Kraftsmanship135 Leisure Electronics23 Lone Star Models41 McDaniel RC Service37 MACS Products152 M&W Models161 Master Kit161 Messers Quality Model Prod155 Micro Mark147 Micro Model Engineering131 Midwest Products156 Model Magic Products41 Model Rectifier CorpCover 2 Sid Morgan Plans158 Morley USA157 30% nitro 6-3 prop get way up hurry Which choose course will af fect desirable amount control throw Covering decorating prototype Jr Clipper 35% covered Mono Kote would have lighter covered Japanese tissue clear dope would viable choice larger radio equipment used wife violently allergic dope fumes usually choose heat-shrink covering material avoid hayMutchlers Hobbies136-1 37 NEPRO154157 Northeast Screen Graphics155 North Products153 Off Ground Models161 PAC Model Supply45 PK Products43 Pacer Technology153 Lewis Pancost139 Bob Parkinson Flying Models40 Penn Valley Hobby Center160 Pica Products15 Polks Hobby6-7 Progress Mfg Co151 Pro-Tune Corp49 Radio South154 Repla-Tech International152 Robbe Modellsport21 Roush Mfg54 SR Batteries49 SachsbyTG139 Scale Model Research162 Shamrock Competition Imports131 Sheldons Hobby Shop22 Sig Mfg Co514 Standale Aircraft152 Superior Aircraft Materials37 Swanson Associates160 T&D Research Associates138 Tatone Products Co33 Tidewater Hobby Enterprises45 Top Flite Models Inc34 Tower Hobbies159 VLProducts22 Victor Engineering40 WE Technical Services8 Williams Brothers32 Wilshire Model Center34 Windsor Propeller Co138147 Wing Mfg Co14 World EnginesCover 4 Zenith Aviation31 Nick Ziroli Models158 ing dope outdoors decoration outlines original kit model shown plans placing covered sections over plansone can trace decoration outlines through transparent covering pencil designed use Mylar overhead projection plates Dixon Vis-aid 38 school supply firms carry equivalents An adjustable French curve rubber-covered wire things sold drafting supply sections useful developing July1986 163 ZA 7 ~1 -1- youngster will easily , build consistently obtain sustained soarBing flight reduced scale competi tion glider Quality kit includes contest balsa tor two gliders catapult educational flight con struction manuals $495 ppd MioNAL lNN~ATl\tE PRODUCTS FOR NEW CATALOG HARRY B HIGLEY & SONS INC P o Box 532 GLENWOOD ILL 60425 FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flite Jemco Nosen Pilot Stafford Radials Behrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please include names models interested parts call between 9AM 0 PM EDT information C0D ordering hope hear youl F BERGLASS 7031890-6017 Dept MA ft fox 530 Goodoiew VA 24095 No 517 Fake Ford$575 RO Sportster reminiscent Ford Trimotor 3-1AA engines 3 RO channels Wingspan 50 Two plan sheets No 518 Project P-i 3$325 FF Scale German WW Ii flying wing has twin rubber motors spans 26 No 519 Gee Bee R-1$475 CL Profile sport flier 25 engines spans 361/4 No 520 FlIght Assistant$1150 Flight box wheels helps Power-plane modelers Two sheets No 521 Comet Jr Clipper Plus 35$650 RC Old-Timer sportster /2A two RO channels Wingspan 48% No 193Stalette CL Stunt model McDonald winner 1978 1980 1982 FAI World Champs $ 375 Ne 239Bk. Eats AC Ken Willards fonnation plane 4-channel 10-power$ 375 Na 262Crashmastbe CL Crash-proof trainer two sizesl 5-30- 3540-power$ 125 No302Eel F1S ACSarpolus O4gdactedfaospnrtflierfnr2-chanIiel Balsa wings tail fuse structare$ 275 Ne 3101930 Fleet SIphon AC Sport Scale 35-40 4-channel Wingspan 56 scale Two sheets$ 625 No 314Deake B AC Ken Willards flying hout f 3-channel 1 5pnwer Fly nod removable gear$ 375 No 326Tayter Cob RC Don SwI ls Schoulyard-Scale f 049s 2-3 channel Spans 50 in$ 350 Ne 332Zephyr RC Small 2-channel glider hood-launch tow thermal singe snaring$ 200 Na 388Laser 200 RC Spoil Scale replica championship Aerohatic flier Uses 40 power 4-5 channel Two sheets$1075 Ne 414ElecIuIc Spauk AC electric-powerod too flier 05 motor 3-channel AC scaled up 1939 rubber-power favorite$ 850 No 422Sceoter AC Two-Meter Sailplane has won Nats event 19821983 plus other contests$ 550 No430keatulde AC Zippy little spnrtslerfnr 10-15 power nod 3-channel RC$ 400 Na 433WaIte Up AC Electric-powered glider 2-3 channels 035 motor spans 52 in$ 450 Ne 438Ceuber FF Embryo Eodurance rebber-power fun ship has big-model characteristics$ 200 No 440Cavahr AC Old-Timer-like sew design has huge wing fur slow easy flights 35 pawer 3 channels Two shoots$1 725 No 444Ftrebelt AC pusher canard sporfipattern uses 40 pasher engine 4-channel Has swept-forward teem wings$ 650 Ne 447VA Else Auseulca AC Old-Timer %A Texaco model 049 glow 2-channels$ 650 Ne 452Ru Bee 2 AC Onnrter-scale spans 71 uses 90 power Four sheets$1600 No 454Sweet P-30 FF Neat stick-uod-tissue Outdoor Aubher P30-class model isa contest-winner$ 200 No 457Spectra AC Electric-power 05-size motor uses 3 different wings sport snaring aerobatics$ 700 Na 4684-40 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$ 650 Ne 463Ptatyhelmhotheu VI AC %A Pylon racer uses lots ito ply built-up structure fur strength lightness$ 475 Na 465SIen Moot AC Fun-fly sportstor 40-size engines spans 52 Lightweight stractore$ 700 No 468Smutber CL Slanter 29135 power Design based hybrid SmeethiolNotiler$ 675 Ne 470Streker AC Mid-wing spnrtster uses 40145 four-stroke engine spans 50% tail-dragger$ 650 Ne 478Buttercup AC Cute ellis spul-tuter uses micro 2-ch AC poise-rudder Spons 27 tsr 020-035 power$ 300 No 479Fear-Stroke Reenter AC SportlAerubutics ship has 19200 styling uses 90 4-stroke engina spons 85 2 sheets61100 Na 482BeideaAger AC SporffAerohutic model looks like Golden Ago spnrtster 60 engines spans 62 in$ 750 Na 483CBS Hawk Ultratigllt FF Outdoor Gas Scale plane uses CO-2 power spans 29 in$ 300 Ne 487Cap 21 AC Scale Aerehutic plana 40-size engine spons 62 Two sheets$1000 No 488MS-7 FF Jumbo Anbher Scale 1920-era Thomas Morse Scout biptuon spans 37 in$ 500 Ne 490Weekender AC Low-wing sport flier 20-size 4-stroke engine spans 47% in$ 575 No 485FW190 AC Hued-launched all-balsa scalelike sportster 1 0-1 5 engines aod hen AC channels Spans 39 in$ 425 No486P47 Thuludeekeit AC Other halt Ongfight Don has similar characteristics FW-1 90$ 425 Ne 457Meekatfee Pisces PF odour ruhher cabin model ideal beginners Spoon 20% in$ 200 Ne 4994-50 AC Dec Mathews greal spnrt flier 60-size four-stroker engine spans 70 iwo sheets$1275 Ne 500Fekker DVU AC Sport scale model WW moongiune uses 90 tour-stroke engine spans 83% Two sheets$1600 Nm 501Eledecker CL Sport scale model early WW muongiane %A power spans 23ih in$ 200 Ne 502RI Wink vagabond FF Sport flier down-sized 02-powered version 1940s cabin plane Spans 33% in$ 225 No 503Dozzbat AC Singe-snarer spans 60 uses 2 AC channels$ 750 No 504Turbo Learn B FF gabber-powered scale model spoos 19% in$150 Na 585P35 Llgbtutiq CL Spout Scala tighter spons 65% weighs 10th uses twin 35s Two sheets$1175 Ne 506Playniate AC Sport flier tor 3 AC channelo 1 5-25 engines spans 50 in$ 650 No 507ltummlekId FF Hot class MB Gas competition plane won 85 Nuts$ 750 No 5086-250 CL Prof lie scale WW Ii bomber twin %A engines spons 30% in$ 400 No 509Beacon 18 FF Hued-Lunecked Glider features curved 18-in wing OT$150 Ne 510Stemper FF Hued-Launched Glider has angular 18-in wing OT$ 150 No 511FIS CL %A profile scale tighter spans 17 has tricycle luoding gear$ 200 No 512Extra 230 AC Giant Scale acrobatic plane spuos 8 ft uses Ouodra engine Two plan sheets$1650 No 513Black Beauty AC Singe-snaring racer has teem wing 3-ch AC spans 114 in$ 750 Ne 514Neely T AC Spurtater %A 2-3 channel AC spout 52in has adjustable flaps$ 475 No 515Westlalel WI*twtod AC Sport Scale WW twin-engine British fighter 10-size engines spans 55 Two sheets61150 No 516Envoy CL Stuoter 40146 power spuos 58 in$ 675 1 ii as i 0 - c-J 0 CNJ 0 0 -0 4 ZO 0 OCO 0 -E - CO lo 0-- 0 V 0 0 flb COG 0 00 - 15 0 0 CO -a 00 CO 0 CO 0 atd 0 CO IDO CO 0 00 CO 0 00 en at mc NAME fl en 00 0c N _ 0STATE U Circle numbers plans wish order 193 332 440 463 483 499 506 513 239 386 444 465 487 500 507 514 262 414 447 468 488 501 508 515 302 422 452 470 490 502 509 516 310 430 454 478 495 503 510 517 314 433 457 479 496 504 511 518 326 438 460 482 497 505 512 519 520521 Plan price includes first class postage US deOvery Air Mail over 300 miles orders outside US please add $250 Air Mall $125 surtace mail planl Moke Check money order payable US lands Model Aviation AMA 1810 Samuel Morse Dr Rostos VA 22090 Please allow 3 6 weeks delivery Please print carefully Enclosed $ ____________________________________ STREET CITY ZIP steady Smooth curves can carefully draw outlines however bottom surfaces can traced using upper outline guide Sig Stripe Rite tape 3A2-in -in widths will flex well around curves can widened afterward electricians tape edges should sealed some sort clear material prefer Sig Sky brite applied along seam small brush prevents seepage color coats Use paper masking tape cover areas painted lightly score MonoKote * 400 steel wool just enough remove some gloss Glean surfaces painted acetone avoid touching fingers afterward Poly-U Super Poxy Skybrite can sprayed onto MonoKote will adhere well used Poly-U particular model Alter shaking spray can light mist coat applied can 12 away surface made no effort completely apply heavy layer paint light coating produced semi transparent color real beauty paper masking tape electricians tape Stripe Rite removed fresh line Stripe Rite con trasting color applied trim engine compartment removable cowl front primed Skybrite primer sprayed separately Flying problem models type inadequate wind penetration Some models just wont turn down wind must kept upwind times Others will climb nearly straight up moving forward Still others will handle windy conditions well will glide like lead sleds calm air conclude such variables wing loading CG placement need selected according wind velocity other words often fly windy weather may better ballast model wind some glide duration will lost CG point shown plan windy conditions move rearward ht winds some reason Jr Clipper 35% behaves better wind other general type Ive flown Perhaps wide fuselage profile helps . tapered flat-bottom airfoil. longer-than-average tail moment Whatever reason model penetrates well will turn upwind downwind ease will float lightest lift wouldnt mind taldng credit honest ly feel genius Carl Goldberg Hand launches model wellcontrolled little tendency veer off side drop like stone Jr Clipper 35% tends climb its wing rather prop gives straight out up climb rather corkscrew Slow-speed characteristics excellent Gentle well-placed landings easy wind just vety nice little airplane 164 Model Aviation
Edition: Model Aviation - 1986/07
Page Numbers: 88, 89, 90, 162, 163, 164
THE PROTOTYPE MODEL Com et Models kit called Jr Clipper 36-in wingspan rubber power model presented enlarged 35% over original structures have redesigned use engines great fun flier Although size Texaco model eligible Society Antique Modelers SAM com petitions due its rubber-power origins original kit introduced 1938 series directed lacked funds buy engines attracted larger gas-type models featured some sort device produce hum rubber motor un wound Usually ratchet attached propeller vibrated strip metal resulting sound much like todays kids produce sticking playing cards spokes bicycle Several manufacturers produced kits such devices including Scientific Models Flea Berkeley Buccaneer 30 Cleveland Models Polish Valor Comet also similar rubber-powered Zipper Jr Clipper remained com panys line well 1 950sseemingto indicate popular Placing Jr Clipper drawings along side classic 6-ft Clipper Mk shows rubber-powered version almost exact half-size reduction big Although Jr Clipper plans 88 Model Aviation Top No matter size see aii Ciippers beautiful behold particuiariy flight classic gem almost irresistible gently cruises across sky Above Carl Goldberg reduced immortal 8-ft Clipper Mk gas desIgn 38-in rubber-powered sport model Now Doc has enlarged slightly contemporary /aA radio-assist desIgn list designer genius Carl Goldberg obviously present Structures Jr Clipper much simpler Clipper Mk simplifications retained version flat-bottom wing airfoil spars outer surfaces flat stabilizer fast work compared big gas-powered version Nonethe less enlarged Jr Clipper has aesthetic beauty big its lovely elliptical planform lines Jr Clipper 35% possesses better average wind penetration models size type thermals light lift may just model anyone wanted small-size Clipper put off need cut out ribs etc Construction Wcod sizes close minimum adequate structural integrity No doubt fuselage could have built i-in-sq balsa specified /16 weighs very little especially corners sanded round larger size also provides rigidity aid boxing step laminated outlines stabilizer/ elevator fin/rudder made flexible balsa strips have mois tened ammonia diluted water form inside outline shape first cut some rigid material such foam board trace plan shapes onto form material aid carbon paper moistened balsa strips coated aliphatic resin such Sig Bond pulled over form held masking tape Allow overnight drying place oven set 1250F few hours cyanoacrylate glue CyA can used nearly construction steps will greatly speed up completion project keeping weight minimum Use 5-min epoxy join wing halves install firewall Wing Cut trailing edge TE sections very lightweight balsa Trace plan shapes onto balsa carbon paper Laminate leading edge LE directly over drawing hold pins placed July1986 89 Loft Elliptical shapes areformed soaking balsa strips ammonlawaterand laminating around foam board outlines Aiiowthe glue dry ovemlghtto make sure retain shape Right simple-to- fabricate elevator horn filler piece make neat efficient system Notethe verythin hinges possiblewith Mylarsheet material Thesearealmostessential hingethethin atripthat makes upthetail Left Simple removable cowl permltseasyenglne accessand main tenance retaining original rubber-powered nose outline kit dummy balsa hardwood engine cylinder combined clickerto makeengine-like noise Above Elevator rudder hinged small sections Rocket City Mylar hinge material Lightweight connector system described text Ultra-mimpie servo mounting aone witn tape inagea --r enas uoo wire enas Baisa stick pushrods work well ample room servos 225 mAh battery outside strips easiest method making ribs first make Xerox copy plan cut out rib pattern copy scissors affix pattern appropriate-size sheet C-grain balsa rubber cement Cut ribs pairs carefully remove paper cement sand wing constructed completely flat building board top spars pulled down tips no tapering spars required Add shear webs front spars wing still building board prevent warping Using pre-tilted center section ribs after both wing halves have built block up tip dihedral height block-sand proper bevel aid square edge building board two halves joined 3-mm epoxy clamp center ribs together clothespins Add center section strips Yn ply dihedral gusset feel uncomfortable model did have dihedral gusset has spun out damage occurring Sand LE TE contour shown plans either before after putting dihedral covering would almost sinful cover such beautiful structure opaque material No doubt Jr Clipper wouid make iightfui rubber-powered model engIne RC gearwere ieftoutand asizabiebraid rubber big prop substituted wing shrink both sides panel equally go along helps prevent warps Tail surfaces Use lamination tech nique make outlines place outlines over drawing add internal structures Cut sections apart trial-fit hinges horns prefer cover sections before installing hinges elevator tiller required performance reasons using makes model look nice fabricated music wire K&S brass strip silver-soldered together StaBrite solder works well electric soldering gun Obviously external horn could used wire joiner connect two elevator halves used section Radio South Mylarfiber-coated hinge material CyA-glued slots anchored small sections toothpick Other choices would include Ace RC nylon hinge material Mono Kote hinges Fuselage Construction classic twosides-built-one-over-the-other using scraps masking tape prevent sticking sides popped apart table knife assembled box Cut drill firewall 3-48 bolts nuepl62 Sheliy Lorance shows off dads istest prideand joy enlargedCometJr Clipper 90 Model Aviation simple m Irdeveloping what appearsto complex color scheme ppers no matter what size aiways iook best done yeiiovi something Balsa 760 sq Wing Area Engine 90-160 Glass Cowl Super Hinges Rolled Plans 72 Wing Span 56 Fuselage Assembly Manual Easy Construction Pre-Formed Aluminum Landing Gear HOYER HOBBIES Apply tb first coat polyurethane varnish let dry thoroughly Finishsand thepolyurethane 320-grit paper apply second coat box dry install hardware covers ensure small hinge screws will hold squirt some Zap-A-Gap screw holes before assembly Cut slit pipe insulation material airplane support slots cover Cut Zap-glue foam rubber transmitter fuel can cavities Mount handle axle wheels ensure fit properly may have trim exces sive polyurethane mounting holes first time use Flight Assis tant flying field prepared endure jealous remarks fellow modelers will find however after first barrage snide remarks referring laziness lack strength carry own flight box wherever go friends will start asking such questions did get plans long did take build about building Jr Clipper/Mathews Continued page 90 blind nuts mount engine screws Fabricate Jigs 1 2 directly over drawing Part FR 1/16 ply should drilled accept already-bent landing gear unit Place left frame over plan weight down Install two jigs appropriate slots checking absolute squareness both planes carpenters square 900 triangle should used check squareness step assembly CyA-glue jigs left side place right side over Again check alignment satisfied CyA-glue right side jigs Pull tail posts together hold clothespins again checking square ness CyA-glue together Cut cross braces pairs using top view guide Install working front back technique will produce c5~f EASTERS PA 7x 3 7x 35 8x 4 $400 per blade $800 per pair PlOP HUB ASSEMBLY U 110 049 051 engines electric motor equivalent WeightS grams $1500 PROP BLADES FOR HUB 8 110 lable 6x 3 $400 per blade $800 per pair PROP HUB ASSEMBLY 8 111 0 engines electric motor equivalent 20 grams$2000 PlOP BLADES FOR HUB 8 111 lable n 9 x 4 10 x 4 lix 4 $500 per blade $1000 per pair Send SSAE tor catalog sheet complete line AlAN pIRPORBANCE 0*50 LAUNdIEO GLINERS PROM LIGMTREICMT ALUMINUM BEVERAGE CANS TWO PALL SIZE PATTERNS YOUR COOICE ILLASTRATBO PABBICATIAN ANN PLYING ISSTNACTIONS NRO AMOITIONAL PATTERNS $125 EACO OR SIA PACE PICK NB BCE-i ornp ~7QB well-aligned fuselage box time Remove box building board install firewall aid top view guide landing gear must now installed followed Bulkheads C D Finish fuselage adding front sheeting nose blocks sand unit nice contour Radio installation prototype model came out slightly under 18 oz 100 mAh battery indicating use micro servos must servos mounted Lite Ply rails servo tape wood first hardened application CyA tape will stick pulling lcose wcod grain plan details simple lightweight pushrod system Unfortunately available flex-rods light enough use type model elevator horn buried needs very careful set servo end Z-bend neutral before placing permanently Some adjustment course available positioning servo placed 225 mAh battery against firewall Royal Vanguard receiver wrapped foam immediately behind servos almost directly under center gravity CG No ballast required setup Control surface throws model such wide speed differential power poweroff mostly matter pilot skill Should have dual-rate system elevator rudder use mini mal throws power switch much higher throws glide set up QUALITY FREE FLIGHT KITS AND SUPPLIES FOR COMPETITION AND SPORT SINCE 1975 Dealer inquiriesCatalog 50 invited .-BLUE RIDGE MODELSE. BOX 429SKYLAND N C28776 SILICONE TUBING BMALLIOBZ 411 8500 10sa taol NED002 411 $400agee ate eel LACeR 20 dl 0600 01 za ate eel ua CAN POOTPAIO L4RRY DODGE AERO INC 110210 Manning Ave N lwater MN 55082 PAW DIESELS Englands Finest 048 35 RIC STD Send $100 list Eric Clutton 913 Cedar LanO Tullahoma Tenn 37388 162 Model Aviation Astrostar 95 Stratostar 95 Aero star 95 10612 Jordan Avenue Chatsworth CA 91311 8183414760 SCALE DOCUMENTATION WORLDS LARGEST COLLECTION Color FOTO-PAAKSKOKU-FAN 3-ojewS 36000IR BIBMA2000 20 poge CATALOG 5200 go SASSSCALE MODEL RESEARCH SaINIACIOn2324 rIOMOdReaB Won 0IOAOIRR4COMb Moo CA 03226 $ES TISERS INDEX AMA Membership55 Academy Aviation R&D34 Ace Radio Control154 Aerospace Composite Products153 Airtronics2 Altech MarketingCover 3 American Jr Aircraft Co152 Argus Specialist Publications35 Astro Flight32 Beer Can Bombers162 Bergeron Enterprises160 Bladder Grabber73 Blue Ridge Machinery & Tools152 Blue Ridge Models162 Dave Brown Products43 Bru Line Industries54 Byron Originals20 CajunRCProducts138 California Model Imports47 CaRa Products47 Carolina-Taffinder139 Johnnie Casburn Mfg54 Champion Model Products158 Circus Hobbies132-134 Cleveland Model Supply54 Eric Clutton162 Consumers Guide14 Coverite1 84 Cox Hobbies47 Craft-Air81 D&D Engineering131 DGA Designs146 Dana Aerospace157 Davis Diesel Development130 Detroit Expo47 Larry Dodge Aero Inc162 Dodgson Designs157 Dougs Hobby Shop140-145 Du-Bro Products Inc9 Dynathrust Props45 Experimental Aircraft Assn33 FAI Model Supply49 FHS Supply Inc4 Fiberglass Master163 Flyline Models155 1 total rudder l elevator measured widest point dont have dual rates particular system use gentle thumb during powered portion flight Another variable lies particular approach like Old-Timer-like RC assist flying Some prefer using two head gaskets engine conjunction 5% nitro fuel 8-3 prop long low-powered engine run Others like use Foam Scale Models152 Fourmost Products43 Fox Mfg45 Funn Fly 86127 Futaba19 GM Precision Products76 Gator RC Products40 Geometron Co146 Carl Goldberg Models75 Gorham Model Products11156 Great Planes Model Mfg Co147 Harry B Higley & Sons163 Historic Aviation13 Hobby Barn128-1 29 Hobby Horn49 Hobby Lobby International160 Hobby Woods32 Holleys Silent Flight130 Hoyer Hobbies162 Ikon Northwest Co161 Indy RC Sales Inc148-1 50 Interwood Co163 Jacks Models158 Jomar139 JTec37 K&BMfg131 K&S Engineering160 K&W Enterprises162 Kustom Kraftsmanship135 Leisure Electronics23 Lone Star Models41 McDaniel RC Service37 MACS Products152 M&W Models161 Master Kit161 Messers Quality Model Prod155 Micro Mark147 Micro Model Engineering131 Midwest Products156 Model Magic Products41 Model Rectifier CorpCover 2 Sid Morgan Plans158 Morley USA157 30% nitro 6-3 prop get way up hurry Which choose course will af fect desirable amount control throw Covering decorating prototype Jr Clipper 35% covered Mono Kote would have lighter covered Japanese tissue clear dope would viable choice larger radio equipment used wife violently allergic dope fumes usually choose heat-shrink covering material avoid hayMutchlers Hobbies136-1 37 NEPRO154157 Northeast Screen Graphics155 North Products153 Off Ground Models161 PAC Model Supply45 PK Products43 Pacer Technology153 Lewis Pancost139 Bob Parkinson Flying Models40 Penn Valley Hobby Center160 Pica Products15 Polks Hobby6-7 Progress Mfg Co151 Pro-Tune Corp49 Radio South154 Repla-Tech International152 Robbe Modellsport21 Roush Mfg54 SR Batteries49 SachsbyTG139 Scale Model Research162 Shamrock Competition Imports131 Sheldons Hobby Shop22 Sig Mfg Co514 Standale Aircraft152 Superior Aircraft Materials37 Swanson Associates160 T&D Research Associates138 Tatone Products Co33 Tidewater Hobby Enterprises45 Top Flite Models Inc34 Tower Hobbies159 VLProducts22 Victor Engineering40 WE Technical Services8 Williams Brothers32 Wilshire Model Center34 Windsor Propeller Co138147 Wing Mfg Co14 World EnginesCover 4 Zenith Aviation31 Nick Ziroli Models158 ing dope outdoors decoration outlines original kit model shown plans placing covered sections over plansone can trace decoration outlines through transparent covering pencil designed use Mylar overhead projection plates Dixon Vis-aid 38 school supply firms carry equivalents An adjustable French curve rubber-covered wire things sold drafting supply sections useful developing July1986 163 ZA 7 ~1 -1- youngster will easily , build consistently obtain sustained soarBing flight reduced scale competi tion glider Quality kit includes contest balsa tor two gliders catapult educational flight con struction manuals $495 ppd MioNAL lNN~ATl\tE PRODUCTS FOR NEW CATALOG HARRY B HIGLEY & SONS INC P o Box 532 GLENWOOD ILL 60425 FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flite Jemco Nosen Pilot Stafford Radials Behrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please include names models interested parts call between 9AM 0 PM EDT information C0D ordering hope hear youl F BERGLASS 7031890-6017 Dept MA ft fox 530 Goodoiew VA 24095 No 517 Fake Ford$575 RO Sportster reminiscent Ford Trimotor 3-1AA engines 3 RO channels Wingspan 50 Two plan sheets No 518 Project P-i 3$325 FF Scale German WW Ii flying wing has twin rubber motors spans 26 No 519 Gee Bee R-1$475 CL Profile sport flier 25 engines spans 361/4 No 520 FlIght Assistant$1150 Flight box wheels helps Power-plane modelers Two sheets No 521 Comet Jr Clipper Plus 35$650 RC Old-Timer sportster /2A two RO channels Wingspan 48% No 193Stalette CL Stunt model McDonald winner 1978 1980 1982 FAI World Champs $ 375 Ne 239Bk. Eats AC Ken Willards fonnation plane 4-channel 10-power$ 375 Na 262Crashmastbe CL Crash-proof trainer two sizesl 5-30- 3540-power$ 125 No302Eel F1S ACSarpolus O4gdactedfaospnrtflierfnr2-chanIiel Balsa wings tail fuse structare$ 275 Ne 3101930 Fleet SIphon AC Sport Scale 35-40 4-channel Wingspan 56 scale Two sheets$ 625 No 314Deake B AC Ken Willards flying hout f 3-channel 1 5pnwer Fly nod removable gear$ 375 No 326Tayter Cob RC Don SwI ls Schoulyard-Scale f 049s 2-3 channel Spans 50 in$ 350 Ne 332Zephyr RC Small 2-channel glider hood-launch tow thermal singe snaring$ 200 Na 388Laser 200 RC Spoil Scale replica championship Aerohatic flier Uses 40 power 4-5 channel Two sheets$1075 Ne 414ElecIuIc Spauk AC electric-powerod too flier 05 motor 3-channel AC scaled up 1939 rubber-power favorite$ 850 No 422Sceoter AC Two-Meter Sailplane has won Nats event 19821983 plus other contests$ 550 No430keatulde AC Zippy little spnrtslerfnr 10-15 power nod 3-channel RC$ 400 Na 433WaIte Up AC Electric-powered glider 2-3 channels 035 motor spans 52 in$ 450 Ne 438Ceuber FF Embryo Eodurance rebber-power fun ship has big-model characteristics$ 200 No 440Cavahr AC Old-Timer-like sew design has huge wing fur slow easy flights 35 pawer 3 channels Two shoots$1 725 No 444Ftrebelt AC pusher canard sporfipattern uses 40 pasher engine 4-channel Has swept-forward teem wings$ 650 Ne 447VA Else Auseulca AC Old-Timer %A Texaco model 049 glow 2-channels$ 650 Ne 452Ru Bee 2 AC Onnrter-scale spans 71 uses 90 power Four sheets$1600 No 454Sweet P-30 FF Neat stick-uod-tissue Outdoor Aubher P30-class model isa contest-winner$ 200 No 457Spectra AC Electric-power 05-size motor uses 3 different wings sport snaring aerobatics$ 700 Na 4684-40 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$ 650 Ne 463Ptatyhelmhotheu VI AC %A Pylon racer uses lots ito ply built-up structure fur strength lightness$ 475 Na 465SIen Moot AC Fun-fly sportstor 40-size engines spans 52 Lightweight stractore$ 700 No 468Smutber CL Slanter 29135 power Design based hybrid SmeethiolNotiler$ 675 Ne 470Streker AC Mid-wing spnrtster uses 40145 four-stroke engine spans 50% tail-dragger$ 650 Ne 478Buttercup AC Cute ellis spul-tuter uses micro 2-ch AC poise-rudder Spons 27 tsr 020-035 power$ 300 No 479Fear-Stroke Reenter AC SportlAerubutics ship has 19200 styling uses 90 4-stroke engina spons 85 2 sheets61100 Na 482BeideaAger AC SporffAerohutic model looks like Golden Ago spnrtster 60 engines spans 62 in$ 750 Na 483CBS Hawk Ultratigllt FF Outdoor Gas Scale plane uses CO-2 power spans 29 in$ 300 Ne 487Cap 21 AC Scale Aerehutic plana 40-size engine spons 62 Two sheets$1000 No 488MS-7 FF Jumbo Anbher Scale 1920-era Thomas Morse Scout biptuon spans 37 in$ 500 Ne 490Weekender AC Low-wing sport flier 20-size 4-stroke engine spans 47% in$ 575 No 485FW190 AC Hued-launched all-balsa scalelike sportster 1 0-1 5 engines aod hen AC channels Spans 39 in$ 425 No486P47 Thuludeekeit AC Other halt Ongfight Don has similar characteristics FW-1 90$ 425 Ne 457Meekatfee Pisces PF odour ruhher cabin model ideal beginners Spoon 20% in$ 200 Ne 4994-50 AC Dec Mathews greal spnrt flier 60-size four-stroker engine spans 70 iwo sheets$1275 Ne 500Fekker DVU AC Sport scale model WW moongiune uses 90 tour-stroke engine spans 83% Two sheets$1600 Nm 501Eledecker CL Sport scale model early WW muongiane %A power spans 23ih in$ 200 Ne 502RI Wink vagabond FF Sport flier down-sized 02-powered version 1940s cabin plane Spans 33% in$ 225 No 503Dozzbat AC Singe-snarer spans 60 uses 2 AC channels$ 750 No 504Turbo Learn B FF gabber-powered scale model spoos 19% in$150 Na 585P35 Llgbtutiq CL Spout Scala tighter spons 65% weighs 10th uses twin 35s Two sheets$1175 Ne 506Playniate AC Sport flier tor 3 AC channelo 1 5-25 engines spans 50 in$ 650 No 507ltummlekId FF Hot class MB Gas competition plane won 85 Nuts$ 750 No 5086-250 CL Prof lie scale WW Ii bomber twin %A engines spons 30% in$ 400 No 509Beacon 18 FF Hued-Lunecked Glider features curved 18-in wing OT$150 Ne 510Stemper FF Hued-Launched Glider has angular 18-in wing OT$ 150 No 511FIS CL %A profile scale tighter spans 17 has tricycle luoding gear$ 200 No 512Extra 230 AC Giant Scale acrobatic plane spuos 8 ft uses Ouodra engine Two plan sheets$1650 No 513Black Beauty AC Singe-snaring racer has teem wing 3-ch AC spans 114 in$ 750 Ne 514Neely T AC Spurtater %A 2-3 channel AC spout 52in has adjustable flaps$ 475 No 515Westlalel WI*twtod AC Sport Scale WW twin-engine British fighter 10-size engines spans 55 Two sheets61150 No 516Envoy CL Stuoter 40146 power spuos 58 in$ 675 1 ii as i 0 - c-J 0 CNJ 0 0 -0 4 ZO 0 OCO 0 -E - CO lo 0-- 0 V 0 0 flb COG 0 00 - 15 0 0 CO -a 00 CO 0 CO 0 atd 0 CO IDO CO 0 00 CO 0 00 en at mc NAME fl en 00 0c N _ 0STATE U Circle numbers plans wish order 193 332 440 463 483 499 506 513 239 386 444 465 487 500 507 514 262 414 447 468 488 501 508 515 302 422 452 470 490 502 509 516 310 430 454 478 495 503 510 517 314 433 457 479 496 504 511 518 326 438 460 482 497 505 512 519 520521 Plan price includes first class postage US deOvery Air Mail over 300 miles orders outside US please add $250 Air Mall $125 surtace mail planl Moke Check money order payable US lands Model Aviation AMA 1810 Samuel Morse Dr Rostos VA 22090 Please allow 3 6 weeks delivery Please print carefully Enclosed $ ____________________________________ STREET CITY ZIP steady Smooth curves can carefully draw outlines however bottom surfaces can traced using upper outline guide Sig Stripe Rite tape 3A2-in -in widths will flex well around curves can widened afterward electricians tape edges should sealed some sort clear material prefer Sig Sky brite applied along seam small brush prevents seepage color coats Use paper masking tape cover areas painted lightly score MonoKote * 400 steel wool just enough remove some gloss Glean surfaces painted acetone avoid touching fingers afterward Poly-U Super Poxy Skybrite can sprayed onto MonoKote will adhere well used Poly-U particular model Alter shaking spray can light mist coat applied can 12 away surface made no effort completely apply heavy layer paint light coating produced semi transparent color real beauty paper masking tape electricians tape Stripe Rite removed fresh line Stripe Rite con trasting color applied trim engine compartment removable cowl front primed Skybrite primer sprayed separately Flying problem models type inadequate wind penetration Some models just wont turn down wind must kept upwind times Others will climb nearly straight up moving forward Still others will handle windy conditions well will glide like lead sleds calm air conclude such variables wing loading CG placement need selected according wind velocity other words often fly windy weather may better ballast model wind some glide duration will lost CG point shown plan windy conditions move rearward ht winds some reason Jr Clipper 35% behaves better wind other general type Ive flown Perhaps wide fuselage profile helps . tapered flat-bottom airfoil. longer-than-average tail moment Whatever reason model penetrates well will turn upwind downwind ease will float lightest lift wouldnt mind taldng credit honest ly feel genius Carl Goldberg Hand launches model wellcontrolled little tendency veer off side drop like stone Jr Clipper 35% tends climb its wing rather prop gives straight out up climb rather corkscrew Slow-speed characteristics excellent Gentle well-placed landings easy wind just vety nice little airplane 164 Model Aviation